CN105270121B - A kind of dumper mechanism of independent wheel rear suspension system - Google Patents

Abstract

The invention discloses a kind of dumper mechanism of independent wheel rear suspension system, including Rear frame and a plurality of rear wheel assemblies；Rear suspension system is provided between Rear frame and rear wheel assembly；Rear suspension system includes resilient suspension and back axle drag link device；Resilient suspension includes the first Rear-axle suspension seat, the second Rear-axle suspension seat, Rear-axle suspension cylinder, the first back axle oblique pull pole socket, the second back axle oblique pull pole socket and brace；Back axle drag link device includes back axle drag link, two the first back axle drag link seats, two the second back axle drag link seats；All Rear-axle suspension cylinders positioned at Rear frame the same side are connected.Using the system of the present invention, it to the supporting stabilizer of rear wheel assembly, can prevent rear wheel assembly from rotating, realize the purpose that each rear wheel assembly in Rear frame the same side is carried.

Description

A kind of dumper mechanism of independent wheel rear suspension system

Technical field

The present invention relates to dumper, especially suspension.

Background technology

Applicant has applied for that an a kind of entitled utility model for articulated truck equalizer bar is special in 2013.10.25 Profit, discloses articulated truck main by vehicle frame, front axle assy, rear axle assy, driver's cabin, container etc. in the patent document Composition.Vehicle frame is made up of front frame and Rear frame, is hinged between front frame and Rear frame by hinged seat.Front axle assy is arranged on In front frame, rear axle assy is arranged in Rear frame by equalizer bar, and driver's cabin is supported by front frame, and the rear end of container is hinged on In Rear frame.Rear axle assy is mainly made up of Electric Motor Wheel, speed changer and wheel.In the patent document, rear axle assy is to pass through Equalizer bar is rigidly attached on the axle of Rear frame, is found in use, the serious vibration of whole articulated truck, time It is long, throughout find there is crack, bolt easily loosens, or even the phenomenon that bolt is cut occurs, easily there is safety hidden Suffer from.In addition, each wheel is all independent, and all it is to be rigidly connected, it is difficult to realize the purpose carried.

It was that 2014.3.7 publication date is the special of 2014.5.21 201410081634.4 applyings date to be in Chinese Patent Application No. A kind of rear suspension system of wide dumper is disclosed in sharp document, belongs to haul truck technical field；It is characterized in：It is flat The suspension holdfast that weighs is connected by hitch frame, Rear suspended cylinder, cross-tie and vehicle frame, it is ensured that equalizing suspension system can only be in vertical direction Motion, and the power that equalizing suspension system support is subject to is passed into vehicle frame；Jackshaft, back axle pass through preceding longitudinal tie, rear longitudinal tie, flat Heng Liang, preceding cross-tie, rear cross-tie are connected with equalizing suspension system support, it is ensured that the power that middle back axle is subject to can pass to equalizing suspension system Support, and can guarantee that middle back axle stress is equal；Rear suspended cylinder is fixed by the thrust of locking nut, rather than is matched somebody with somebody by interference Close, be easily installed；This structure is compared with leaf spring structure, the advantage is that the bearing capacity of suspension cylinder is more than leaf spring, And friction pair is not present in whole system, therefore it can solve current wide dumper rear-mounted fault rate height, it is difficult to it is past The problem of large-tonnage development.In the structure shown here, jackshaft, back axle, preceding longitudinal tie, rear longitudinal tie, equalizer bar, balance shaft, preceding The structure that cross-tie, rear cross-tie and balance suspension holdfast are integral, the overall structure passes through cross-tie and suspension Cylinder is connected with vehicle frame, after being respectively mounted wheel on jackshaft and back axle, in order to be able on rugged road surface travel, jackshaft, after Bridge, preceding longitudinal tie, rear longitudinal tie, equalizer bar, preceding cross-tie and rear cross-tie be able to will rotate certain around balance shaft Angle, therefore, in the same side of vehicle frame, above-mentioned working method, but a suspension could be preferably adapted to using a suspension cylinder The less stable of cylinder, and need suspension cylinder that there is larger carrying force；In addition, for above-mentioned suspension, it is difficult to realize Respectively take turns the purpose carried.

The content of the invention

It is an object of the invention to provide a kind of dumper mechanism of independent wheel rear suspension system, using the system of the present invention, to trailing wheel The supporting stabilizer of assembly, can prevent rear wheel assembly from rotating, and realize the purpose that each rear wheel assembly in Rear frame the same side is carried.

To reach above-mentioned purpose, a kind of dumper mechanism of independent wheel rear suspension system, including Rear frame and a plurality of rear wheel assemblies, Wherein, sum >=4 of rear wheel assembly, the rear wheel assembly of more than two is respectively equipped with every side of vehicle frame；In Rear frame and often Rear suspension system is provided between one rear wheel assembly；Described rear suspension system includes resilient suspension and back axle drag link is filled Put, described resilient suspension is respectively equipped with the two ends of back axle drag link device, two resilient suspensions are relative to back axle Drag link device is arranged symmetrically；Described resilient suspension includes the first Rear-axle suspension seat, the second Rear-axle suspension seat, back axle and hanged Hang cylinder, the first back axle oblique pull pole socket, the second back axle oblique pull pole socket and brace；First Rear-axle suspension seat is fixed in Rear frame, Second Rear-axle suspension seat is fixed on rear wheel assembly, and the upper end of Rear-axle suspension cylinder is hinged on the first Rear-axle suspension seat, and back axle hangs The lower end for hanging cylinder is hinged on the second Rear-axle suspension seat；First back axle oblique pull pole socket is fixed in Rear frame, the second back axle oblique pull Pole socket is fixed on rear wheel assembly, and brace is hinged between the first back axle oblique pull pole socket and the second back axle oblique pull pole socket, oblique pull The central axial direction of bar from the first back axle oblique pull pole socket wheel assembly backward is extended obliquely out；It is horizontal that back axle drag link device includes back axle Pull bar, two the first back axle drag link seats, two the second back axle drag link seats；Described back axle drag link includes transverse slat and difference It is located at the connecting plate at transverse slat two ends；Two first back axle drag link seats are arranged symmetrically relative to back axle drag link, and two second back axles are horizontal Draw-bar seat is arranged symmetrically relative to back axle drag link, and the first back axle drag link seat is fixed in Rear frame, the second back axle drag link Seat is fixed on rear axle assy；Connecting plate and the first back axle drag link seat and the second back axle drag link seat of same one end are hinged； All Rear-axle suspension cylinders positioned at Rear frame the same side are connected.

Above-mentioned dumper mechanism of independent wheel rear suspension system, the power of rear wheel assembly mainly by back axle drag link device both sides after Bridge suspension cylinder is delivered in Rear frame.In the present invention, the both sides of back axle drag link device are respectively provided with Rear-axle suspension cylinder, and It is arranged symmetrically, is two dot points to rear wheel assembly, makes the stress of rear wheel assembly more uniform, stationarity is good, and passes through two Individual suspension cylinder effectively can prevent rear wheel assembly from rotating.In the present invention, rear wheel assembly is mainly by Electric Motor Wheel, speed changer, wheel hub With wheel composition, it is relative to Rear frame in working condition or off working state, Electric Motor Wheel and speed changer regardless of rear wheel assembly Non-rotary, wheel hub and wheel are rotatable relative to Electric Motor Wheel, therefore, by back axle drag link device that Rear frame is total with trailing wheel Into connecting, Electric Motor Wheel in rear wheel assembly, speed changer rotation can be prevented, rear suspension system normal work is allowed.Due to same All Rear-axle suspension cylinders of side are connected so that the pressure of all Rear-axle suspension cylinders of the same side is identical, realizes that the same side is each The purpose that rear wheel assembly is carried.

Further, the first described Rear-axle suspension seat extends laterally, and the middle part of the first Rear-axle suspension seat is bent upwards It is curved；First Rear-axle suspension seat includes the first Rear-axle suspension seat support plate and the first Rear-axle suspension seat gusset, and the first back axle hangs Hanging seat support plate extends horizontal-extending after bending from Rear frame obliquely, and the first Rear-axle suspension seat support plate is outwards cut from Rear frame Face is gradually reduced, and has first connecting portion between the both sides of the first Rear-axle suspension seat support plate and Rear frame；It is outstanding in the first back axle The bottom of hanging seat support plate is welded between two the first Rear-axle suspension seat gussets, two first Rear-axle suspensions seat gusset and forms free Between, the first mounting hole is provided with the outer end of the first Rear-axle suspension seat gusset, is set respectively in the both sides of the first Rear-axle suspension seat gusset There is first boss, first boss has the first perforation, and the first perforation is coaxial with the first mounting hole.Come for the first Rear-axle suspension seat Say, it is mainly by vertical power, and the first Rear-axle suspension seat is curved, makes the mechanical property of the first Rear-axle suspension seat more preferable, carries The high strength and stiffness of first Rear-axle suspension seat.There is provided first connecting portion, the first Rear-axle suspension seat support plate and rear car are allowed The connection area of frame is big, so as to improve bonding strength.

Further, the second described Rear-axle suspension seat includes the second fixed plate and the second engaging lug, and the second fixed plate is consolidated It is scheduled on rear wheel assembly, is welded with two the second engaging lugs being parallel to each other in the second fixed plate, the second engaging lug includes the Two connecting portions and the second support, the section of second connecting portion are more than the section of the second support, and second connecting portion is welded on the In two fixed plates, the second support is curved, and the tail end of the second support is provided with the second mounting hole, in the both sides of the second support Second boss is respectively equipped with, second boss has the second perforation, and the second perforation is coaxial with the second mounting hole.Utilize the second fixed plate It is convenient that second Rear-axle suspension seat is fixed on rear wheel assembly, because the section of second connecting portion is more than the second support, therefore, the Two engaging lugs and the joint face of the second fixed plate are big, improve bonding strength.

Further, the first articulated mounting is provided between Rear-axle suspension cylinder and the first Rear-axle suspension seat, in Rear-axle suspension The second articulated mounting is provided between cylinder and the second Rear-axle suspension seat；The first described articulated mounting includes clutch shaft bearing, the first pin Axle, the first nut, the first stainless steel gasket, clutch shaft bearing back-up ring and the first snap ring；Determine provided with first the upper end of Rear-axle suspension cylinder Position hole, the first positioning hole is that the first via, the first accommodating hole and first being sequentially communicated avoid hole, and the diameter of the first accommodating hole is big The first small stair face is formed between the diameter of the first via, the first accommodating hole and first through hole, first avoids the diameter in hole More than the diameter of the first accommodating hole, the first big step surface is formed between the first avoidance hole and the first accommodating hole；Clutch shaft bearing is pacified In the first accommodating hole, the outer ring of clutch shaft bearing is interference fitted with the first accommodating hole, the outer ring wherein end face of clutch shaft bearing Kept out by the first small stair face, avoid hole close to the first big step surface provided with the first neck first, the first neck holding is The first snap ring stated, the first snap ring withstands the other end of the outer ring of clutch shaft bearing；First bearing pin passes through the first Rear-axle suspension Seat gusset, first boss and clutch shaft bearing, one end of the first bearing pin have the first enlarged head, the first enlarged head and therein first Boss is contacted, and the first nut is engaged on the first bearing pin, the first stainless steel gasket be located at the first nut and wherein first boss it Between, it is located on the first bearing pin and clutch shaft bearing back-up ring is cased between first boss and clutch shaft bearing；The second described articulated mounting Including second bearing, the second bearing pin, the second nut, the second stainless steel gasket, second bearing back-up ring and the second snap ring；Rear-axle suspension The lower end of cylinder is provided with the second positioning hole, and the second positioning hole is that the second via, the second accommodating hole and second being sequentially communicated avoid hole, The diameter of second accommodating hole is more than the diameter of the second via, and the second small stair is formed between the second accommodating hole and the second through hole Face, the second diameter for avoiding hole is more than the diameter of the second accommodating hole, and second is formed between the second avoidance hole and the second accommodating hole Big step surface；Second bearing is arranged in the second accommodating hole, and the outer ring of second bearing is interference fitted with the second accommodating hole, the second axle The outer ring held wherein end face is kept out by the second small stair face, and hole is avoided close to second largest step surface provided with the second card second Groove, the second neck is equipped with the second described snap ring, and the second snap ring withstands the other end of the outer ring of second bearing；Second pin Axle passes through the second support, second boss and second bearing, and one end of the second bearing pin has the second enlarged head, the second enlarged head with Second boss therein contact, the second nut is engaged on the second bearing pin, the second stainless steel gasket be located at the second nut with wherein Between one second boss, it is located on the second bearing pin and second bearing back-up ring is cased between second boss and second bearing.

Using above-mentioned first articulated mounting, due to the first positioning hole be sequentially communicated the first via, the first accommodating hole and First avoids hole, and the diameter of the first accommodating hole is more than the diameter of the first via, and the first diameter for avoiding hole is more than the first accommodating hole Diameter, install clutch shaft bearing when, through first avoidance hole clutch shaft bearing is pressed into the first accommodating hole, first avoid hole with The gap of clutch shaft bearing is big, therefore reduces distance when clutch shaft bearing is pressed into the first positioning hole sliding friction, it is easier to pacify Clutch shaft bearing is filled, after clutch shaft bearing is installed in place, axial limit is carried out to clutch shaft bearing by the first small stair face and the first snap ring Position, improves the reliability that clutch shaft bearing is installed to the first positioning hole；Due to being provided with first boss, therefore, the first Rear-axle suspension The intensity of seat gusset is higher.Using above-mentioned second articulated mounting, due to the second positioning hole be sequentially communicated the second via, second Accommodating hole and second avoids hole, and the diameter of the second accommodating hole is more than the diameter of the second via, and the second diameter for avoiding hole is more than the Second bearing, when installing second bearing, is pressed into the second accommodating hole, second by the diameter of two accommodating holes through the second avoidance hole The gap for avoiding hole and second bearing is big, therefore distance when reducing second bearing press-in with the second positioning hole sliding friction, Second bearing is more easily installed, after second bearing is installed in place, second bearing is entered by the second small stair face and the second snap ring Row axial limiting, improves the reliability that second bearing is installed to the second positioning hole；Due to being provided with second boss, therefore, second The intensity of support is higher.

Further, the first back axle oblique pull pole socket is included after two the first back axle brace support plates being parallel to each other, first Bridge brace support plate is provided with the 3rd mounting hole, and the 3rd boss is respectively equipped with the both sides of the first back axle brace support plate, 3rd boss is provided with the 3rd perforation, and the 3rd perforation is coaxial with the 3rd mounting hole, and the 3rd boss can improve the first back axle brace The intensity of support plate.

Further, the second back axle oblique pull pole socket includes the 4th fixed plate and the 4th support plate, and the 4th fixed plate is fixed on On rear wheel assembly, two the 4th support plates are welded with the 4th fixed plate, the 4th support plate is provided with the 4th mounting hole, the 4th The both sides of support plate are respectively equipped with the 4th boss, and the 4th boss is provided with the 4th perforation, and the 4th perforation is coaxial with the 4th mounting hole. 4th boss can improve the intensity of the 4th support plate.

Further, the 3rd articulated mounting is provided between brace and the first back axle oblique pull pole socket, in brace and the The 4th articulated mounting is provided between two back axle oblique pull pole sockets；The 3rd described articulated mounting includes 3rd bearing, the 3rd bearing pin, the Three nuts, the 3rd stainless steel gasket, 3rd bearing back-up ring and the 3rd snap ring；One end of brace is provided with the 3rd positioning hole, the 3rd Positioning hole is that the 3rd via, the 3rd accommodating hole and the 3rd being sequentially communicated avoid hole, and the diameter of the 3rd accommodating hole is more than the 3rd mistake The diameter in hole, is formed with the 3rd small stair face between the 3rd accommodating hole and third through-hole, the 3rd diameter for avoiding hole is more than the 3rd The third-largest step surface is formed between the diameter of accommodating hole, the 3rd avoidance accommodating holes of Kong Yu tri-；3rd bearing is arranged on the 3rd In accommodating hole, the outer ring of 3rd bearing is interference fitted with the 3rd accommodating hole, and the outer ring wherein end face of 3rd bearing is small by the 3rd Step surface is kept out, and avoids hole close to the third-largest step surface provided with the 3rd neck the 3rd, the 3rd neck is equipped with described the 3rd Snap ring, the 3rd snap ring withstands the other end of the outer ring of 3rd bearing；3rd bearing pin is through the supporting of the first back axle brace, the Three boss and 3rd bearing, one end of the 3rd bearing pin have the third-largest head, and the third-largest head is contacted with the 3rd boss therein, 3rd nut is engaged on the 3rd bearing pin, and the 3rd stainless steel gasket is located between the 3rd nut and wherein the 3rd boss, the 3rd It is located on bearing pin and is cased with 3rd bearing back-up ring between the 3rd boss and 3rd bearing；The 4th described articulated mounting includes the 4th axle Hold, the 4th bearing pin, the 4th nut, the 4th stainless steel gasket, fourth bearing back-up ring and the 4th snap ring；The other end of brace is provided with 4th positioning hole, the 4th positioning hole is that the 4th via, the 4th accommodating hole and the 4th being sequentially communicated avoid hole, the 4th accommodating hole Diameter is more than the diameter of the 4th via, and the 4th small stair face is formed between the 4th accommodating hole and fourth hole, and the 4th avoids hole Diameter be more than the 4th accommodating hole diameter, the 4th avoidance the accommodating holes of Kong Yu tetra- between be formed with the fourth-largest step surface；4th Bearing is arranged in the 4th accommodating hole, and the outer ring of fourth bearing is interference fitted with the 4th accommodating hole, and the outer ring of fourth bearing is wherein End face is kept out by the 4th small stair face, and hole is avoided close to the fourth-largest step surface provided with the 4th neck, the 4th neck card the 4th The 4th described snap ring is equipped with, the 4th snap ring withstands the other end of the outer ring of fourth bearing；4th bearing pin passes through the 4th Board, the 4th boss and fourth bearing, one end of the 4th bearing pin have a fourth-largest head, the fourth-largest head and the therein 4th convex Platform is contacted, and the 4th nut is engaged on the 4th bearing pin, the 4th stainless steel gasket be located at the 4th nut and wherein one the 4th boss it Between, it is located on the 4th bearing pin and is cased with fourth bearing back-up ring between the 4th boss and fourth bearing.

Using above-mentioned 3rd articulated mounting, due to the 3rd positioning hole be sequentially communicated the 3rd via, the 3rd accommodating hole and 3rd avoids hole, and the diameter of the 3rd accommodating hole is more than the diameter of the 3rd via, and the 3rd diameter for avoiding hole is more than the 3rd accommodating hole Diameter, install 3rd bearing when, through the 3rd avoidance hole 3rd bearing is pressed into the 3rd accommodating hole, the 3rd avoid hole with The gap of 3rd bearing is big, therefore reduces distance when 3rd bearing is pressed into the 3rd positioning hole sliding friction, it is easier to pacify 3rd bearing is filled, after 3rd bearing is installed in place, axial limit is carried out to 3rd bearing by the 3rd small stair face and the 3rd snap ring Position, improves the reliability that 3rd bearing is installed to the 3rd positioning hole.Using above-mentioned 4th articulated mounting, because the 4th positioning hole is The 4th via, the 4th accommodating hole and the 4th being sequentially communicated avoid hole, and the diameter of the 4th accommodating hole is more than the diameter of the 4th via, 4th diameter for avoiding hole is more than the diameter of the 4th accommodating hole, when installing fourth bearing, and hole is avoided by fourth bearing through the 4th Be pressed into the 4th accommodating hole, the 4th avoid hole and fourth bearing gap it is big, therefore with the when reducing fourth bearing press-in The distance of four positioning hole sliding frictions, it is easier to install fourth bearing, after fourth bearing is installed in place, passes through the 4th small stair face Axial limiting is carried out to fourth bearing with the 4th snap ring, the reliability that fourth bearing is installed to the 4th positioning hole is improved.

Further, the first back axle drag link seat includes the first fixed support and the first back axle drag link seat support plate, the One fixed support includes lateral connection portion and side connecting portion, and lateral connection portion is fixed on the top surface of Rear frame, and side connecting portion is consolidated It is scheduled on the side of Rear frame；Provided with two the first back axle drag link seat support plates being parallel to each other on the first fixed support, First back axle drag link seat support plate is provided with the 5th mounting hole, and the is respectively equipped with the both sides of the first back axle drag link seat support plate Five boss, the 5th boss is provided with the 5th perforation, and the 5th perforation is coaxial with the 5th mounting hole.First fixed support includes laterally connecting Socket part and side connecting portion, allow two faces of the first fixed support and Rear frame all to connect, and the area not only connected is big, and laterally Connecting portion and the perpendicular arrangement of side connecting portion, have been carried out more preferable spacing to the first fixed support.There is provided the 5th boss, is improved The intensity of first back axle drag link support plate.

Further, the second back axle drag link seat includes the second fixed support and the second back axle drag link seat support plate； First fixed support is provided with two the second back axle drag link seat support plates being parallel to each other, the second back axle drag link seat support plate Provided with the 6th mounting hole, the 6th boss is respectively equipped with the both sides of the second back axle drag link seat support plate, the 6th boss is provided with 6th perforation, the 6th perforation is coaxial with the 6th mounting hole.6th boss improves the intensity of the second back axle drag link seat support plate.

Further, the 5th articulated mounting is provided between connecting plate and the first back axle drag link seat, in connecting plate and the The 6th articulated mounting is provided between two back axle drag link seats；The 5th described articulated mounting includes 5th bearing, the 5th bearing pin, the Five nuts, the 5th stainless steel gasket, 5th bearing back-up ring and the 5th snap ring；One end of connecting plate is provided with the 5th positioning hole, the 5th Positioning hole is that the 5th via, the 5th accommodating hole and the 5th being sequentially communicated avoid hole, and the diameter of the 5th accommodating hole is more than the 5th mistake The diameter in hole, is formed with the 5th small stair face between the 5th accommodating hole and fifth hole, the 5th diameter for avoiding hole is more than the 5th The fifth-largest step surface is formed between the diameter of accommodating hole, the 5th avoidance accommodating holes of Kong Yu five；5th bearing is arranged on the 5th In accommodating hole, the outer ring of 5th bearing is interference fitted with the 5th accommodating hole, and the outer ring wherein end face of 5th bearing is small by the 5th Step surface is kept out, and avoids hole close to the fifth-largest step surface provided with the 5th neck the 5th, the 5th neck is equipped with described the 5th Snap ring, the 5th snap ring withstands the other end of the outer ring of 5th bearing；5th bearing pin is supported through the first back axle drag link seat Plate, the 5th boss and 5th bearing, one end of the 5th bearing pin have the fifth-largest head, the fifth-largest head and the 5th boss therein Contact, the 5th nut is engaged on the 5th bearing pin, and the 5th stainless steel gasket is located between the 5th nut and wherein the 5th boss, It is located on 5th bearing pin and is cased with 5th bearing back-up ring between the 5th boss and 5th bearing；The 6th described articulated mounting includes the Six bearings, the 6th bearing pin, the 6th nut, the 6th stainless steel gasket, 6th bearing back-up ring and the 6th snap ring；The other end of connecting plate Provided with the 6th positioning hole, the 6th positioning hole is that the 6th via, the 6th accommodating hole and the 6th being sequentially communicated avoid hole, and the 6th houses The diameter in hole is more than the diameter of the 6th via, the 6th small stair face is formed between the 6th accommodating hole and the 6th through hole, the 6th keeps away Allow the diameter in hole to be more than between the diameter of the 6th accommodating hole, the 6th avoidance accommodating holes of Kong Yu six and be formed with the sixth-largest step surface； 6th bearing is arranged in the 6th accommodating hole, and the outer ring of 6th bearing is interference fitted with the 6th accommodating hole, the outer ring of 6th bearing Wherein end face is kept out by the 6th small stair face, and hole is avoided close to the sixth-largest step surface provided with the 6th neck, the 6th card the 6th Groove is equipped with the 6th described snap ring, and the 6th snap ring withstands the other end of the outer ring of 6th bearing；6th bearing pin is through the Two back axle drag link seat support plates, the 6th boss and 6th bearing, one end of the 6th bearing pin has the sixth-largest head, the sixth-largest head Portion is contacted with the 6th boss therein, and the 6th nut is engaged on the 6th bearing pin, the 6th stainless steel gasket be located at the 6th nut with Between wherein one the 6th boss, it is located on the 6th bearing pin and is cased with 6th bearing back-up ring between the 6th boss and 6th bearing.

Using above-mentioned 5th articulated mounting, due to the 5th positioning hole be sequentially communicated the 5th via, the 5th accommodating hole and 5th avoids hole, and the diameter of the 5th accommodating hole is more than the diameter of the 5th via, and the 5th diameter for avoiding hole is more than the 5th accommodating hole Diameter, install 5th bearing when, through the 5th avoidance hole 5th bearing is pressed into the 5th accommodating hole, the 5th avoid hole with The gap of 5th bearing is big, therefore reduces distance when 5th bearing is pressed into the 5th positioning hole sliding friction, it is easier to pacify 5th bearing is filled, after 5th bearing is installed in place, axial limit is carried out to 5th bearing by the 5th small stair face and the 5th snap ring Position, improves the reliability that 5th bearing is installed to the 5th positioning hole.Using above-mentioned 6th articulated mounting, because the 6th positioning hole is The 6th via, the 6th accommodating hole and the 6th being sequentially communicated avoid hole, and the diameter of the 6th accommodating hole is more than the diameter of the 6th via, 6th diameter for avoiding hole is more than the diameter of the 6th accommodating hole, when installing 6th bearing, and hole is avoided by 6th bearing through the 6th Be pressed into the 6th accommodating hole, the 6th avoid hole and 6th bearing gap it is big, therefore with the when reducing 6th bearing press-in The distance of six positioning hole sliding frictions, it is easier to install 6th bearing, after 6th bearing is installed in place, passes through the 6th small stair face Axial limiting is carried out to 6th bearing with the 6th snap ring, the reliability that 6th bearing is installed to the 6th positioning hole is improved.

Brief description of the drawings

Fig. 1 is the schematic diagram of vehicle frame, preceding wheel assembly and rear wheel assembly.

Fig. 2 is the upward view of vehicle frame, preceding wheel assembly and rear wheel assembly.

Fig. 3 is the schematic diagram of dumper mechanism of independent wheel rear suspension system.

Fig. 4 is the exploded view of dumper mechanism of independent wheel rear suspension system.

Fig. 5 is the top view of dumper mechanism of independent wheel rear suspension system.

Fig. 6 is the connection diagram of Rear-axle suspension cylinder and the first Rear-axle suspension seat.

Fig. 7 is the connection diagram of Rear-axle suspension cylinder and the second Rear-axle suspension seat.

Fig. 8 is the connection diagram of brace and the first back axle oblique pull pole socket.

Fig. 9 is the connection diagram of brace and the second back axle oblique pull pole socket.

Figure 10 is the connection diagram of connecting plate and the first back axle drag link seat.

Figure 11 is the connection diagram of connecting plate and the second back axle drag link seat.

Embodiment

The present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As depicted in figs. 1 and 2, dumper includes vehicle frame 100, preceding wheel assembly 200 and rear wheel assembly 300.Vehicle frame 100 includes Front frame 100a, Rear frame 100b and articulated body 100c, articulated body 100c are located between front frame 100a and Rear frame 100b.Before Wheel assembly 200 is located on front frame 100a by front suspension.

As shown in Figures 1 to 5, dumper mechanism of independent wheel rear suspension system includes Rear frame 100b, rear suspension system 400 and answered Several rear wheel assemblies 300, wherein, sum >=4 of rear wheel assembly, in the present embodiment, rear wheel assembly are 4, in Rear frame 100b every side is respectively equipped with two rear wheel assemblies 300.

Rear wheel assembly 300 includes Electric Motor Wheel, speed changer, wheel hub and wheel, and speed changer is connected on the output shaft of Electric Motor Wheel, Wheel hub is connected on speed changer, and wheel is located on wheel hub.

As shown in Figures 3 to 5, described rear suspension system 400 includes resilient suspension 1 and back axle drag link device 2. Described resilient suspension 1 is respectively equipped with the two ends of back axle drag link device 2, two resilient suspensions are horizontal relative to back axle Pull rod device 2 is arranged symmetrically.

Described resilient suspension 1 includes the first Rear-axle suspension the 11, second Rear-axle suspension of seat seat 12, Rear-axle suspension cylinder 13rd, the first back axle oblique pull pole socket 14, the second back axle oblique pull pole socket 15 and brace 16.

As shown in Figures 2 to 4, the first described Rear-axle suspension seat 11 extends laterally, in the first Rear-axle suspension seat 11 Portion is bent upwards curved；First Rear-axle suspension seat 11 includes the first Rear-axle suspension seat support plate 111 and first Rear-axle suspension seat Gusset 112, the first Rear-axle suspension seat support plate 111 extends horizontal-extending, the first Rear-axle suspension after bending from Rear frame obliquely Seat support plate 111 is gradually reduced from the outside sections of Rear frame 100b, can not only save material, nor can influence the first back axle The intensity of hangoff receptacle support plate 111, has first to connect between the both sides of the first Rear-axle suspension seat support plate 111 and Rear frame 100b Socket part 113, makes the connection area of the first Rear-axle suspension seat support plate 111 and Rear frame 100b big, so as to improve bonding strength； Two the first Rear-axle suspension seat gussets 112, two first Rear-axle suspensions are welded with the bottom of the first Rear-axle suspension seat support plate 111 Space is formed between seat gusset 112, as shown in fig. 6, being provided with the first mounting hole in the outer end of the first Rear-axle suspension seat gusset 112 1121, first boss 114 is respectively equipped with the both sides of the first Rear-axle suspension seat gusset 112, first boss 114 has the first perforation 1141, the first perforation 1121 is coaxial with the first mounting hole 1141.

Described the second Rear-axle suspension seat 12 includes the second fixed plate 121 and the second engaging lug 122, the second fixed plate 121 Be fixed in the fixed seat 3001 outside Electric Motor Wheel, the bottom of the second fixed plate 121 is provided with projection 124, projection 124 can holding to consolidating In the locating slot of reservation 3001, the positioning to the second fixed plate 121 is realized.Two are welded with the second fixed plate 121 mutually The second parallel engaging lug 122, the second engaging lug 122 includes the support 1222 of second connecting portion 1221 and second, the second connection The section in portion 1221 is more than the section of the second support 1222, and second connecting portion 1221 is welded in the second fixed plate 121, and second The joint face of the fixed plate 121 of connecting portion 1221 and second is big, improves bonding strength, the second support 1222 is curved so that The mechanical property of second support 122 is good, and the tail end of the second support 1222 is provided with the second mounting hole, in the second support 1222 Both sides be respectively equipped with second boss 123, second boss 123 has the second perforation 1231, the second perforation 1231 and the second installation Hole is coaxial.

The upper end of Rear-axle suspension cylinder 13 is hinged on the first Rear-axle suspension seat 11, and the lower end of Rear-axle suspension cylinder 13 is hinged on the On two Rear-axle suspensions seat 12.As shown in fig. 6, being hinged dress provided with first between the Rear-axle suspension of Rear-axle suspension cylinder 13 and first seat 11 17 are put, as shown in fig. 7, being provided with the second articulated mounting 18 between the Rear-axle suspension of Rear-axle suspension cylinder 13 and second seat 12.

As shown in fig. 6, the first described articulated mounting 17 includes clutch shaft bearing 171, the first bearing pin 172, the first nut 173rd, the first stainless steel gasket 174, the snap ring 176 of clutch shaft bearing back-up ring 175 and first；The upper end of Rear-axle suspension cylinder 13 is provided with first Positioning hole, the first positioning hole is that the first via, the first accommodating hole and first being sequentially communicated avoid hole, the diameter of the first accommodating hole More than the diameter of the first via, the first small stair face is formed between the first accommodating hole and first through hole, first avoids the straight of hole Footpath is more than the diameter of the first accommodating hole, and the first big step surface is formed between the first avoidance hole and the first accommodating hole；Clutch shaft bearing 171 are arranged in the first accommodating hole, and the outer ring of clutch shaft bearing 171 is interference fitted with the first accommodating hole, the outer ring of clutch shaft bearing 171 Wherein end face is kept out by the first small stair face, and hole is avoided close to the first big step surface provided with the first neck, the first card first Groove is equipped with the first described snap ring 176, and the first snap ring 176 withstands the other end of the outer ring of clutch shaft bearing 171；First pin Axle 172 is through the first Rear-axle suspension seat gusset 112, first boss 114 and clutch shaft bearing 171, and one end of the first bearing pin 172 has First enlarged head, the first enlarged head is contacted with first boss therein, and the first nut 173 is engaged on the first bearing pin 172, and first Stainless steel gasket 174 is located at the first nut 173 and wherein between first boss, on the first bearing pin 172 be located at first boss with Clutch shaft bearing back-up ring 175 is cased between clutch shaft bearing；Pass through clutch shaft bearing 171, the first bearing pin 172, the first nut 173, first Stainless steel gasket 174, the snap ring 176 of clutch shaft bearing back-up ring 175 and first cut with scissors the Rear-axle suspension of Rear-axle suspension cylinder 13 and first seat 11 It is connected together.

Using above-mentioned first articulated mounting 17, because the first positioning hole is the first via, the first accommodating hole that are sequentially communicated Hole is avoided with first, the diameter of the first accommodating hole is more than the diameter of the first via, and the first diameter for avoiding hole is more than first and housed Clutch shaft bearing 171, when installing clutch shaft bearing 171, is pressed into the first accommodating hole, first by the diameter in hole through the first avoidance hole The gap for avoiding hole and clutch shaft bearing 17 is big, thus reduce when clutch shaft bearing 171 is pressed into the first positioning hole sliding friction Distance, it is easier to install clutch shaft bearing 171, after clutch shaft bearing 171 is installed in place, passes through the first small stair face and the first snap ring 176 pairs of clutch shaft bearings 171 carry out axial limiting, improve the reliability that clutch shaft bearing 171 is installed to the first positioning hole；Due to setting First boss 114, therefore, the intensity of the first Rear-axle suspension seat gusset 112 are higher.

As shown in fig. 7, the second described articulated mounting 18 includes second bearing 181, the second bearing pin 182, the second nut 183rd, the second stainless steel gasket 184, the snap ring 186 of second bearing back-up ring 185 and second；The lower end of Rear-axle suspension cylinder 13 is provided with second Positioning hole, the second positioning hole is that the second via, the second accommodating hole and second being sequentially communicated avoid hole, the diameter of the second accommodating hole More than the diameter of the second via, the second small stair face is formed between the second accommodating hole and the second through hole, second avoids the straight of hole Footpath is more than the diameter of the second accommodating hole, and second largest step surface is formed between the second avoidance hole and the second accommodating hole；Second bearing 181 are arranged in the second accommodating hole, and the outer ring of second bearing 181 is interference fitted with the second accommodating hole, the outer ring of second bearing 181 Wherein end face is kept out by the second small stair face, and hole is avoided close to second largest step surface provided with the second neck, the second card second Groove is equipped with the second described snap ring 186, and the second snap ring 186 withstands the other end of the outer ring of second bearing 181；Second pin Axle 182 passes through the second support 1222, second boss 123 and second bearing 181, and one end of the second bearing pin 182 has second largest Head, the second enlarged head is contacted with second boss therein, and the second nut 183 is engaged on the second bearing pin 182, the second stainless steel Pad 184 is located between the second nut 183 and a wherein second boss, and second boss and second is located on the second bearing pin 182 Second bearing back-up ring 185 is cased between bearing.

Using above-mentioned second articulated mounting 18, because the second positioning hole is the second via, the second accommodating hole that are sequentially communicated Hole is avoided with second, the diameter of the second accommodating hole is more than the diameter of the second via, and the second diameter for avoiding hole is more than second and housed Second bearing 181, when installing second bearing 181, is pressed into the second accommodating hole, second by the diameter in hole through the second avoidance hole The gap for avoiding hole and second bearing 181 is big, thus reduce when second bearing 181 is pressed into the second positioning hole sliding friction Distance, it is easier to install second bearing 181, after second bearing 181 is installed in place, passes through the second small stair face and the second snap ring pair Second bearing 181 carries out axial limiting, improves the reliability that second bearing 181 is installed to the second positioning hole；Due to being provided with Two boss 123, therefore, the intensity of the second support 1222 are higher.

For the first Rear-axle suspension seat 11, it is mainly by vertical power, and the first Rear-axle suspension seat 11 is curved, allows The mechanical property of first Rear-axle suspension seat 11 more preferably, improves the strength and stiffness of the first Rear-axle suspension seat 11.

First back axle oblique pull pole socket 14 is fixed on Rear frame 100b, and the second back axle oblique pull pole socket 15 is fixed on rear wheel assembly Fixed seat 3001 on, brace 16 is hinged between the first back axle oblique pull pole socket 14 and the second back axle oblique pull pole socket 15, oblique pull Bar 16 is extended obliquely out from the first back axle oblique pull pole socket 14 to the central axial direction of rear wheel assembly.

As shown in Figure 5 and Figure 8, the first back axle oblique pull pole socket 14 includes two the first back axle brace support plates being parallel to each other 141, the first back axle brace support plate 141 is provided with the 3rd mounting hole 1411, the two of the first back axle brace support plate 141 Side is respectively equipped with the 3rd boss 142, and the 3rd boss 142 is provided with the 3rd perforation 1421, the 3rd perforation 1421 and the 3rd mounting hole 1411 is coaxial.

As shown in figures 4 and 9, the second back axle oblique pull pole socket 15 includes the 4th fixed plate 151 and the 4th support plate 152, the Four fixed plates 151 are fixed in the fixed seat 3001 of rear wheel assembly, and two the 4th support plates are welded with the 4th fixed plate 151 152, the 4th support plate 152 is provided with the 4th mounting hole, and the 4th boss 153 is respectively equipped with the both sides of the 4th support plate 152, the Four boss 153 are provided with the 4th perforation, and the 4th perforation is coaxial with the 4th mounting hole.

The 3rd articulated mounting 19 is provided between the back axle oblique pull pole socket 14 of brace 16 and first, in brace 16 and second The 4th articulated mounting 110 is provided between back axle oblique pull pole socket 15.

As shown in figure 8, the 3rd described articulated mounting 19 includes 3rd bearing 191, the 3rd bearing pin 192, the 3rd nut 193rd, the 3rd stainless steel gasket 194, the snap ring 196 of 3rd bearing back-up ring 195 and the 3rd；One end of brace 16 is provided with the 3rd positioning Hole, the 3rd positioning hole is that the 3rd via, the 3rd accommodating hole and the 3rd being sequentially communicated avoid hole, and the diameter of the 3rd accommodating hole is more than The diameter of 3rd via, is formed with the 3rd small stair face between the 3rd accommodating hole and third through-hole, the diameter in the 3rd avoidance hole is big The third-largest step surface is formed between the diameter of the 3rd accommodating hole, the 3rd avoidance accommodating holes of Kong Yu tri-；3rd bearing 191 is pacified In the 3rd accommodating hole, the outer ring of 3rd bearing 191 is interference fitted with the 3rd accommodating hole, and the outer ring of 3rd bearing 191 is wherein End face is kept out by the 3rd small stair face, and hole is avoided close to the third-largest step surface provided with the 3rd neck, the 3rd neck card the 3rd The 3rd described snap ring 196 is equipped with, the 3rd snap ring 196 withstands the other end of the outer ring of 3rd bearing 191；3rd bearing pin 192 pass through the first back axle brace support plate 141, the 3rd boss 142 and 3rd bearing 191, and one end of the 3rd bearing pin 192 has The third-largest head, the third-largest head is contacted with the 3rd boss therein, and the 3rd nut 193 is engaged on the 3rd bearing pin 192, and the 3rd Stainless steel gasket 194 is located between the 3rd nut 193 and wherein the 3rd boss, on the 3rd bearing pin 192 be located at the 3rd boss with 3rd bearing back-up ring 195 is cased between 3rd bearing 191.

Using above-mentioned 3rd articulated mounting 19, because the 3rd positioning hole is the 3rd via, the 3rd accommodating hole that are sequentially communicated Hole is avoided with the 3rd, the diameter of the 3rd accommodating hole is more than the diameter of the 3rd via, and the 3rd diameter for avoiding hole is more than the 3rd and housed 3rd bearing 191, when installing 3rd bearing 191, is pressed into the 3rd accommodating hole, the 3rd by the diameter in hole through the 3rd avoidance hole The gap for avoiding hole and 3rd bearing 191 is big, thus reduce when 3rd bearing 191 is pressed into the 3rd positioning hole sliding friction Distance, it is easier to install 3rd bearing 191, after 3rd bearing 191 is installed in place, passes through the 3rd small stair face and the 3rd snap ring 196 pairs of 3rd bearings 191 carry out axial limiting, improve the reliability that 3rd bearing 191 is installed to the 3rd positioning hole.

As shown in figure 9, the 4th described articulated mounting 110 includes fourth bearing 1101, the 4th bearing pin 1102, the 4th nut 1103rd, the 4th stainless steel gasket 1104, the snap ring 1106 of fourth bearing back-up ring 1105 and the 4th；The other end of brace 16 is provided with the Four positioning holes, the 4th positioning hole be sequentially communicated the 4th via, the 4th accommodating hole and the 4th avoid hole, the 4th accommodating hole it is straight Footpath is more than the diameter of the 4th via, and the 4th small stair face is formed between the 4th accommodating hole and fourth hole, and the 4th avoids hole Diameter, which is more than between the diameter of the 4th accommodating hole, the 4th avoidance accommodating holes of Kong Yu tetra-, is formed with the fourth-largest step surface；4th axle Hold 1101 to be arranged in the 4th accommodating hole, the outer ring of fourth bearing 1101 is interference fitted with the 4th accommodating hole, fourth bearing 1101 Outer ring wherein end face kept out by the 4th small stair face, the 4th avoid hole close to the fourth-largest step surface be provided with the 4th neck, 4th neck is equipped with the 4th described snap ring 1106, and the 4th snap ring 1106 withstands the other end of the outer ring of fourth bearing 1101 Face；4th bearing pin 1102 passes through the 4th support plate 152, the 4th boss 153 and fourth bearing 1101, one end of the 4th bearing pin 1102 With the fourth-largest head, the fourth-largest head is contacted with the 4th boss therein, and the 4th nut 1103 is engaged on the 4th bearing pin 1102 On, the 4th stainless steel gasket 1104 is located between the 4th nut 1103 and wherein one the 4th boss, upper in the 4th bearing pin 1102 Fourth bearing back-up ring 1105 is cased between the 4th boss and fourth bearing 1101.

Using above-mentioned 4th articulated mounting 110, because the 4th positioning hole is the 4th via, the 4th accommodating hole that are sequentially communicated Hole is avoided with the 4th, the diameter of the 4th accommodating hole is more than the diameter of the 4th via, and the 4th diameter for avoiding hole is more than the 4th and housed Fourth bearing 1101, when installing fourth bearing 1101, is pressed into the 4th accommodating hole by the diameter in hole through the 4th avoidance hole, the Four avoidance holes and the gap of fourth bearing 1101 are big, therefore are rubbed when reducing the press-in of fourth bearing 1101 with the slip of the 4th positioning hole The distance of wiping, it is easier to install fourth bearing 1101, after fourth bearing 1101 is installed in place, passes through the 4th small stair face and the 4th Snap ring 1106 carries out axial limiting to fourth bearing 1101, improves the reliability that fourth bearing 1101 is installed to the 4th positioning hole.

As shown in Figure 3 and Figure 4, back axle drag link device 2 includes back axle drag link 21, two the first back axle drag link seats 22nd, two the second back axle drag link seats 23.

As shown in figure 4, described back axle drag link 21 includes transverse slat 211 and is respectively provided at the connecting plate at the two ends of transverse slat 211 212；Two first back axle drag link seats are arranged symmetrically relative to back axle drag link, and two second back axle drag link seats are horizontal relative to back axle Pull bar is arranged symmetrically, and the first back axle drag link seat 22 is fixed on Rear frame 100b, after the second back axle drag link seat 23 is fixed on In the fixed seat 3001 of axle assembly.

Connecting plate 212 and the first back axle drag link seat 22 and the second back axle drag link seat 23 of same one end are hinged.

As shown in figure 3, the first back axle drag link seat 22 includes the first fixed support 221 and the first back axle drag link seat supporting Plate 222, the first fixed support 221 includes lateral connection portion 2211 and side connecting portion 2212, after lateral connection portion 2211 is fixed on On the top surface of vehicle frame, side connecting portion 2212 is fixed on the side of Rear frame；First fixed support 221 includes lateral connection portion 2211 and side connecting portion 2212, allow two faces of the first fixed support 221 and Rear frame all to connect, the area not only connected is big, And lateral connection portion 2211 and the perpendicular arrangement of side connecting portion 2212, the first fixed support 221 is carried out more preferable spacing. Provided with two the first back axle drag link seat support plates 222 being parallel to each other, the first back axle drag link on the first fixed support 221 Seat support plate 222 is provided with the 5th mounting hole, as shown in Figure 10, is set respectively in the both sides of the first back axle drag link seat support plate 222 There is the 5th boss 223, the 5th boss 223 is provided with the 5th perforation, and the 5th perforation is coaxial with the 5th mounting hole；There is provided the 5th is convex Platform, improves the intensity of the first back axle drag link support plate.

As shown in figure 4, the second back axle drag link seat 23 includes the second fixed support 231 and the second back axle drag link seat supporting Plate 232；Provided with two the second back axle drag link seat support plates 232 being parallel to each other, the second back axle on the first fixed support 231 Drag link seat support plate 232 is provided with the 6th mounting hole, as shown in figure 11, in the both sides of the second back axle drag link seat support plate 232 The 6th boss 233 is respectively equipped with, the 6th boss 233 is provided with the 6th perforation, and the 6th perforation is coaxial with the 6th mounting hole.

As shown in Figure 10, the 5th articulated mounting 24 is provided between the back axle drag link seat 22 of connecting plate 211 and first, such as schemed Shown in 11, the 6th articulated mounting 25 is provided between the back axle drag link seat 23 of connecting plate 211 and second.

It is stainless that the 5th described articulated mounting 24 includes 5th bearing 241, the 5th bearing pin 242, the 5th nut the 243, the 5th Steel plate washer 244, the snap ring 246 of 5th bearing back-up ring 245 and the 5th；One end of connecting plate 211 is provided with the 5th positioning hole, the 5th positioning Hole is that the 5th via, the 5th accommodating hole and the 5th being sequentially communicated avoid hole, and the diameter of the 5th accommodating hole is more than the 5th via Diameter, is formed with the 5th small stair face between the 5th accommodating hole and fifth hole, the 5th diameter for avoiding hole is more than the 5th and housed The fifth-largest step surface is formed between the diameter in hole, the 5th avoidance accommodating holes of Kong Yu five；5th bearing 241 is arranged on the 5th and held Put in hole, the outer ring of 5th bearing 241 and the 5th accommodating hole are interference fitted, the outer ring wherein end face of 5th bearing 241 is by the Five small stair faces are kept out, and avoid hole close to the fifth-largest step surface provided with the 5th neck the 5th, the 5th neck is equipped with described 5th snap ring 246, the 5th snap ring 246 withstands the other end of the outer ring of 5th bearing 241；5th bearing pin 242 passes through first Back axle drag link seat support plate 222, the 5th boss and 5th bearing 241, one end of the 5th bearing pin 242 have the fifth-largest head, The fifth-largest head is contacted with the 5th boss therein, and the 5th nut 243 is engaged on the 5th bearing pin 242, the 5th stainless steel gasket 244 are located between the 5th nut 243 and wherein the 5th boss, and the 5th boss and 5th bearing 241 are located on the 5th bearing pin 242 Between be cased with 5th bearing back-up ring 245.

Using above-mentioned 5th articulated mounting 24, because the 5th positioning hole is the 5th via, the 5th accommodating hole that are sequentially communicated Hole is avoided with the 5th, the diameter of the 5th accommodating hole is more than the diameter of the 5th via, and the 5th diameter for avoiding hole is more than the 5th and housed 5th bearing 241, when installing 5th bearing 241, is pressed into the 5th accommodating hole, the 5th by the diameter in hole through the 5th avoidance hole The gap for avoiding hole and 5th bearing 241 is big, thus reduce when 5th bearing 241 is pressed into the 5th positioning hole sliding friction Distance, it is easier to install 5th bearing 241, after 5th bearing 241 is installed in place, passes through the 5th small stair face and the 5th snap ring 246 pairs of 5th bearings 241 carry out axial limiting, improve the reliability that 5th bearing 241 is installed to the 5th positioning hole.

As shown in figure 11, the 6th described articulated mounting 25 includes 6th bearing 251, the 6th bearing pin 252, the 6th nut 253rd, the 6th stainless steel gasket 254, the snap ring 256 of 6th bearing back-up ring 255 and the 6th；The other end of connecting plate 211 is provided with the 6th Positioning hole, the 6th positioning hole is that the 6th via, the 6th accommodating hole and the 6th being sequentially communicated avoid hole, the diameter of the 6th accommodating hole More than the diameter of the 6th via, the 6th small stair face is formed between the 6th accommodating hole and the 6th through hole, the 6th avoids the straight of hole Footpath, which is more than between the diameter of the 6th accommodating hole, the 6th avoidance accommodating holes of Kong Yu six, is formed with the sixth-largest step surface；6th bearing 251 are arranged in the 6th accommodating hole, and the outer ring of 6th bearing 251 is interference fitted with the 6th accommodating hole, the outer ring of 6th bearing 251 Wherein end face is kept out by the 6th small stair face, and hole is avoided close to the sixth-largest step surface provided with the 6th neck, the 6th card the 6th Groove is equipped with the 6th described snap ring 256, and the 6th snap ring 256 withstands the other end of the outer ring of 6th bearing 251；6th pin Axle 252 is through the second back axle drag link seat support plate 232, the 6th boss and 6th bearing 251, and one end of the 6th bearing pin 252 has There is the sixth-largest head, the sixth-largest head is contacted with the 6th boss therein, and the 6th nut 253 is engaged on the 6th bearing pin 252, the Six stainless steel gaskets 254 are located between the 6th nut 253 and wherein one the 6th boss, the 6th are located on the 6th bearing pin 252 convex 6th bearing back-up ring 255 is cased between platform and 6th bearing 251.

Using above-mentioned 6th articulated mounting 25, because the 6th positioning hole is the 6th via, the 6th accommodating hole that are sequentially communicated Hole is avoided with the 6th, the diameter of the 6th accommodating hole is more than the diameter of the 6th via, and the 6th diameter for avoiding hole is more than the 6th and housed 6th bearing 251, when installing 6th bearing 251, is pressed into the 6th accommodating hole, the 6th by the diameter in hole through the 6th avoidance hole The gap for avoiding hole and 6th bearing 251 is big, thus reduce when 6th bearing 251 is pressed into the 6th positioning hole sliding friction Distance, it is easier to install 6th bearing 251, after 6th bearing 251 is installed in place, passes through the 6th small stair face and the 6th snap ring 256 pairs of 6th bearings 251 carry out axial limiting, improve the reliability that 6th bearing 251 is installed to the 6th positioning hole.

The dumper mechanism of independent wheel rear suspension system of present embodiment, the power of rear wheel assembly 300 mainly passes through back axle drag link The Rear-axle suspension cylinder 13 of the both sides of device 2 is delivered on Rear frame 100b.In the present invention, the both sides of back axle drag link device 2 point Not there is provided Rear-axle suspension cylinder 13, and be arranged symmetrically, be two dot points to rear wheel assembly 300, allow rear wheel assembly 300 stress more Plus it is uniform, stationarity is good, and effectively can prevent rear wheel assembly from rotating by two suspension cylinders 13.In the present invention, after Wheel assembly 300 is mainly made up of Electric Motor Wheel, speed changer, wheel hub and wheel, no matter rear wheel assembly is in working condition or inoperative State, Electric Motor Wheel and speed changer are non-rotary relative to Rear frame, and wheel hub and wheel are rotatable relative to Electric Motor Wheel, therefore, Rear frame 100b is connected with rear wheel assembly 300 by back axle drag link device 2, can prevent electronic in rear wheel assembly Wheel, speed changer rotation, allow rear suspension system normal work.

All Rear-axle suspension cylinders in the same side are connected so that the pressure of all Rear-axle suspension cylinders of the same side is identical, Realize the purpose that each rear wheel assembly in the same side is carried.

Claims (10)

1. a kind of dumper mechanism of independent wheel rear suspension system, including Rear frame and a plurality of rear wheel assemblies, wherein, rear wheel assembly it is total Number >=4, the rear wheel assembly of more than two is respectively equipped with every side of vehicle frame；It is characterized in that：After Rear frame and each Rear suspension system is provided between wheel assembly；Described rear suspension system includes resilient suspension and back axle drag link device, The two ends of back axle drag link device are respectively equipped with described resilient suspension, and two resilient suspensions are relative to back axle drag link Device is arranged symmetrically；Described resilient suspension include the first Rear-axle suspension seat, the second Rear-axle suspension seat, Rear-axle suspension cylinder, First back axle oblique pull pole socket, the second back axle oblique pull pole socket and brace；First Rear-axle suspension seat is fixed in Rear frame, after second Bridge hangoff receptacle is fixed on rear wheel assembly, and the upper end of Rear-axle suspension cylinder is hinged on the first Rear-axle suspension seat, Rear-axle suspension cylinder Lower end is hinged on the second Rear-axle suspension seat；First back axle oblique pull pole socket is fixed in Rear frame, and the second back axle oblique pull pole socket is consolidated It is scheduled on rear wheel assembly, brace is hinged between the first back axle oblique pull pole socket and the second back axle oblique pull pole socket, brace is from The central axial direction of one back axle oblique pull pole socket wheel assembly backward is extended obliquely out；Back axle drag link device include back axle drag link, Two the first back axle drag link seats, two the second back axle drag link seats；Described back axle drag link includes transverse slat and is respectively provided at The connecting plate at transverse slat two ends；Two first back axle drag link seats are arranged symmetrically relative to back axle drag link, two second back axle drag links Seat is arranged symmetrically relative to back axle drag link, and the first back axle drag link seat is fixed in Rear frame, and the second back axle drag link seat is solid It is scheduled on rear axle assy；Connecting plate and the first back axle drag link seat and the second back axle drag link seat of same one end are hinged；It is located at All Rear-axle suspension cylinders of Rear frame the same side are connected.

2. dumper mechanism of independent wheel rear suspension system according to claim 1, it is characterised in that：The first described Rear-axle suspension Seat extend laterally, the first Rear-axle suspension seat middle part be bent upwards it is curved；First Rear-axle suspension seat includes the first back axle and hanged Hanging seat support plate and the first Rear-axle suspension seat gusset, the first Rear-axle suspension seat support plate extend water after bending from Rear frame obliquely Flat extension, the first Rear-axle suspension seat support plate is gradually reduced from the outside section of Rear frame, and the two of the first Rear-axle suspension seat support plate There is first connecting portion between side and Rear frame；Two the first back axles are welded with the bottom of the first Rear-axle suspension seat support plate to hang Space is formed between hanging seat gusset, two first Rear-axle suspensions seat gusset, in the outer end of the first Rear-axle suspension seat gusset provided with the One mounting hole, first boss is respectively equipped with the both sides of the first Rear-axle suspension seat gusset, and first boss has the first perforation, first Perforation is coaxial with the first mounting hole.

3. dumper mechanism of independent wheel rear suspension system according to claim 2, it is characterised in that：The second described Rear-axle suspension Seat includes the second fixed plate and the second engaging lug, and the second fixed plate is fixed on rear wheel assembly, is welded with the second fixed plate Two the second engaging lugs for being parallel to each other, the second engaging lug includes second connecting portion and the second support, and second connecting portion is cut Face is more than the section of the second support, and second connecting portion is welded in the second fixed plate, and the second support is curved, the second supporting The tail end in portion is provided with the second mounting hole, and second boss is respectively equipped with the both sides of the second support, and second boss has second to wear Hole, the second perforation is coaxial with the second mounting hole.

4. dumper mechanism of independent wheel rear suspension system according to claim 3, it is characterised in that：In Rear-axle suspension cylinder and first The first articulated mounting is provided between Rear-axle suspension seat, dress is hinged provided with second between Rear-axle suspension cylinder and the second Rear-axle suspension seat Put；The first described articulated mounting includes clutch shaft bearing, the first bearing pin, the first nut, the first stainless steel gasket, clutch shaft bearing gear Circle and the first snap ring；The upper end of Rear-axle suspension cylinder is provided with the first positioning hole, the first positioning hole be sequentially communicated the first via, the One accommodating hole and first avoids hole, and the diameter of the first accommodating hole is more than the diameter of the first via, the first accommodating hole and first through hole Between be formed with the first small stair face, the first diameter for avoiding hole is more than the diameter of the first accommodating hole, and first avoids hole and first The first big step surface is formed between accommodating hole；Clutch shaft bearing is arranged in the first accommodating hole, the outer ring of clutch shaft bearing and first Accommodating hole is interference fitted, and the outer ring wherein end face of clutch shaft bearing kept out by the first small stair face, and hole is avoided close to the first One big step surface is provided with the first neck, and the first neck is equipped with the first described snap ring, and the first snap ring withstands clutch shaft bearing The other end of outer ring；First bearing pin passes through the first Rear-axle suspension seat gusset, first boss and clutch shaft bearing, the one of the first bearing pin End has the first enlarged head, and the first enlarged head is contacted with first boss therein, and the first nut is engaged on the first bearing pin, and first Stainless steel gasket is located at the first nut and wherein between first boss, be located on the first bearing pin first boss and clutch shaft bearing it Between be cased with clutch shaft bearing back-up ring；The second described articulated mounting includes second bearing, the second bearing pin, the second nut, second stainless Steel plate washer, second bearing back-up ring and the second snap ring；The lower end of Rear-axle suspension cylinder is provided with the second positioning hole, and the second positioning hole is successively The second via, the second accommodating hole and second communicated avoids hole, and the diameter of the second accommodating hole is more than the diameter of the second via, second The second small stair face is formed between accommodating hole and the second through hole, the second diameter for avoiding hole is more than the diameter of the second accommodating hole, Second largest step surface is formed between second avoidance hole and the second accommodating hole；Second bearing is arranged in the second accommodating hole, and second The outer ring of bearing is interference fitted with the second accommodating hole, and the outer ring wherein end face of second bearing is kept out by the second small stair face, Second avoids hole is provided with the second neck close to second largest step surface, and the second neck is equipped with the second described snap ring, the second snap ring Withstand the other end of the outer ring of second bearing；Second bearing pin passes through the second support, second boss and second bearing, second One end of bearing pin has the second enlarged head, and the second enlarged head is contacted with second boss therein, and the second nut is engaged on the second pin On axle, the second stainless steel gasket is located between the second nut and wherein a second boss, and second boss is located on the second bearing pin Second bearing back-up ring is cased between second bearing.

5. dumper mechanism of independent wheel rear suspension system according to claim 1, it is characterised in that：First back axle oblique pull pole socket bag Two the first back axle brace support plates being parallel to each other are included, the first back axle brace support plate is provided with the 3rd mounting hole, the The both sides of one back axle brace support plate are respectively equipped with the 3rd boss, and the 3rd boss is provided with the 3rd perforation, the 3rd perforation and the Three mounting holes are coaxial.

6. dumper mechanism of independent wheel rear suspension system according to claim 5, it is characterised in that：Second back axle oblique pull pole socket bag The 4th fixed plate and the 4th support plate are included, the 4th fixed plate is fixed on rear wheel assembly, two are welded with the 4th fixed plate Four support plates, the 4th support plate is provided with the 4th mounting hole, is respectively equipped with the 4th boss in the both sides of the 4th support plate, the 4th is convex Platform is provided with the 4th perforation, and the 4th perforation is coaxial with the 4th mounting hole.

7. dumper mechanism of independent wheel rear suspension system according to claim 6, it is characterised in that：In brace and the first back axle The 3rd articulated mounting is provided between oblique pull pole socket, the 4th articulated mounting is provided between brace and the second back axle oblique pull pole socket； The 3rd described articulated mounting includes 3rd bearing, the 3rd bearing pin, the 3rd nut, the 3rd stainless steel gasket, 3rd bearing back-up ring With the 3rd snap ring；One end of brace be provided with the 3rd positioning hole, the 3rd positioning hole be sequentially communicated the 3rd via, the 3rd house Hole and the 3rd avoids hole, and the diameter of the 3rd accommodating hole is more than the diameter of the 3rd via, shape between the 3rd accommodating hole and third through-hole The small stair faces of Cheng You tri-, the 3rd diameter for avoiding hole is more than the diameter of the 3rd accommodating hole, and the 3rd avoids the accommodating holes of Kong Yu tri- Between be formed with the third-largest step surface；3rd bearing is arranged in the 3rd accommodating hole, the outer ring of 3rd bearing and the 3rd accommodating hole Interference fit, the outer ring wherein end face of 3rd bearing is kept out by the 3rd small stair face, and hole is avoided close to the third-largest the 3rd Terrace is provided with the 3rd neck, and the 3rd neck is equipped with the 3rd described snap ring, and the 3rd snap ring withstands the outer ring of 3rd bearing Other end；3rd bearing pin is through the supporting of the first back axle brace, the 3rd boss and 3rd bearing, and one end of the 3rd bearing pin has The third-largest head, the third-largest head is contacted with the 3rd boss therein, and the 3rd nut is engaged on the 3rd bearing pin, the 3rd stainless steel Pad is located between the 3rd nut and wherein the 3rd boss, is located on the 3rd bearing pin and is cased between the 3rd boss and 3rd bearing 3rd bearing back-up ring；The 4th described articulated mounting include fourth bearing, the 4th bearing pin, the 4th nut, the 4th stainless steel gasket, Fourth bearing back-up ring and the 4th snap ring；The other end of brace is provided with the 4th positioning hole, and the 4th positioning hole is the be sequentially communicated Four vias, the 4th accommodating hole and the 4th avoid hole, and the diameter of the 4th accommodating hole is more than the diameter of the 4th via, the 4th accommodating hole with The 4th small stair face is formed between fourth hole, the 4th diameter for avoiding hole is more than the diameter of the 4th accommodating hole, and the 4th avoids The fourth-largest step surface is formed between the accommodating holes of Kong Yu tetra-；Fourth bearing is arranged in the 4th accommodating hole, outside fourth bearing Circle is interference fitted with the 4th accommodating hole, and the outer ring wherein end face of fourth bearing is kept out by the 4th small stair face, is avoided the 4th Hole is provided with the 4th neck close to the fourth-largest step surface, and the 4th neck is equipped with the 4th described snap ring, and the 4th snap ring withstands the The other end of the outer ring of four bearings；4th bearing pin passes through the 4th support plate, the 4th boss and fourth bearing, the one of the 4th bearing pin End has the fourth-largest head, and the fourth-largest head is contacted with the 4th boss therein, and the 4th nut is engaged on the 4th bearing pin, and the 4th Stainless steel gasket is located between the 4th nut and wherein one the 4th boss, and the 4th boss and fourth bearing are located on the 4th bearing pin Between be cased with fourth bearing back-up ring.

8. dumper mechanism of independent wheel rear suspension system according to claim 1, it is characterised in that：First back axle drag link seat bag The first fixed support and the first back axle drag link seat support plate are included, the first fixed support includes lateral connection portion and side connecting portion, Lateral connection portion is fixed on the top surface of Rear frame, and side connecting portion is fixed on the side of Rear frame；On the first fixed support Provided with two the first back axle drag link seat support plates being parallel to each other, the first back axle drag link seat support plate is installed provided with the 5th Hole, is respectively equipped with the 5th boss, the 5th boss is provided with the 5th perforation, the 5th in the both sides of the first back axle drag link seat support plate Perforation is coaxial with the 5th mounting hole.

9. dumper mechanism of independent wheel rear suspension system according to claim 8, it is characterised in that：Second back axle drag link seat bag Include the second fixed support and the second back axle drag link seat support plate；On the first fixed support provided with two be parallel to each other second Back axle drag link seat support plate, the second back axle drag link seat support plate is provided with the 6th mounting hole, in the second back axle drag link seat branch The both sides of board are respectively equipped with the 6th boss, and the 6th boss is provided with the 6th perforation, and the 6th perforation is coaxial with the 6th mounting hole.

10. dumper mechanism of independent wheel rear suspension system according to claim 9, it is characterised in that：After connecting plate and first The 5th articulated mounting is provided between bridge drag link seat, dress is hinged provided with the 6th between connecting plate and the second back axle drag link seat Put；The 5th described articulated mounting includes 5th bearing, the 5th bearing pin, the 5th nut, the 5th stainless steel gasket, 5th bearing gear Circle and the 5th snap ring；One end of connecting plate is provided with the 5th positioning hole, and the 5th positioning hole is the 5th via, the 5th appearance being sequentially communicated Put hole and the 5th and avoid hole, the diameter of the 5th accommodating hole is more than the diameter of the 5th via, between the 5th accommodating hole and fifth hole The 5th small stair face is formed with, the 5th diameter for avoiding hole is more than the diameter of the 5th accommodating hole, and the 5th, which avoids Kong Yu five, houses The fifth-largest step surface is formed between hole；5th bearing is arranged in the 5th accommodating hole, and the outer ring of 5th bearing is housed with the 5th Hole is interference fitted, and the outer ring wherein end face of 5th bearing is kept out by the 5th small stair face, and hole is avoided close to the fifth-largest the 5th Step surface is provided with the 5th neck, and the 5th neck is equipped with the 5th described snap ring, and the 5th snap ring withstands the outer ring of 5th bearing Other end；5th bearing pin passes through the first back axle drag link seat support plate, the 5th boss and 5th bearing, the one of the 5th bearing pin End has the fifth-largest head, and the fifth-largest head is contacted with the 5th boss therein, and the 5th nut is engaged on the 5th bearing pin, and the 5th Stainless steel gasket is located between the 5th nut and wherein the 5th boss, be located on the 5th bearing pin the 5th boss and 5th bearing it Between be cased with 5th bearing back-up ring；The 6th described articulated mounting includes 6th bearing, the 6th bearing pin, the 6th nut, the 6th stainless Steel plate washer, 6th bearing back-up ring and the 6th snap ring；The other end of connecting plate is provided with the 6th positioning hole, and the 6th positioning hole is phase successively Logical the 6th via, the 6th accommodating hole and the 6th avoidance hole, the diameter of the 6th accommodating hole is more than the diameter of the 6th via, and the 6th holds The 6th small stair face that is formed between the through holes of Kong Yu six is put, the 6th diameter for avoiding hole is more than the diameter of the 6th accommodating hole, the The sixth-largest step surface is formed between the six avoidance accommodating holes of Kong Yu six；6th bearing is arranged in the 6th accommodating hole, the 6th axle The outer ring held is interference fitted with the 6th accommodating hole, and the outer ring wherein end face of 6th bearing is kept out by the 6th small stair face, the Six avoid hole is provided with the 6th neck close to the sixth-largest step surface, and the 6th neck is equipped with the 6th described snap ring, and the 6th snap ring is supported Block the other end of the outer ring of 6th bearing；6th bearing pin is through the second back axle drag link seat support plate, the 6th boss and the Six bearings, one end of the 6th bearing pin has the sixth-largest head, and the sixth-largest head is contacted with the 6th boss therein, and the 6th nut is nibbled Close on the 6th bearing pin, the 6th stainless steel gasket is located between the 6th nut and wherein one the 6th boss, upper in the 6th bearing pin 6th bearing back-up ring is cased between the 6th boss and 6th bearing.