CN208454416U - A kind of fork truck lateral stability locking system - Google Patents
A kind of fork truck lateral stability locking system Download PDFInfo
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- CN208454416U CN208454416U CN201821090755.5U CN201821090755U CN208454416U CN 208454416 U CN208454416 U CN 208454416U CN 201821090755 U CN201821090755 U CN 201821090755U CN 208454416 U CN208454416 U CN 208454416U
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- fork truck
- solenoid valve
- steeraxle
- vehicle
- oil cavitie
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- 239000003921 oil Substances 0.000 claims description 48
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model provides a kind of fork truck lateral stability locking system, vehicle frame and steeraxle including fork truck, locked cylinder is connected between the vehicle frame and steeraxle, the locked cylinder includes the oil pocket and piston handle for being located at cylinder interior, and the middle part periphery of the piston handle is installed with the stripper loop that oil pocket is separated into upper oil cavitie, lower oil cavitie；The cylinder body is externally connected to solenoid valve and trimmer valve, and the throttle orifice on the solenoid valve is connected to lower oil cavitie, and the trimmer valve is connected to by throttle orifice with upper oil cavitie.When vehicle takes a sudden turn, when its travel speed or angular speed are more than the value set in controller, then the solenoid valve power loss in controller control locked cylinder, electromagnetism valve lift pin close throttle orifice by spring pushed home, the upper oil cavitie and lower oil cavitie of locked cylinder disconnect, i.e. locked cylinder does not move, that is, is rigid connection between vehicle frame and steeraxle, so that four wheels of fork truck itself support vehicle body simultaneously, the stability for increasing lateral direction of car avoids its rollover.
Description
Technical field
The utility model relates to industrial vehicle technical field, in particular to a kind of fork truck lateral stability locking system.
Background technique
Fork truck refer to pallet cargo is loaded and unloaded, the various wheeled carriers of stacking and short distance transportation operation
, logistics machinery can be achieved in industrial development and be turned into industry, the labor intensity for mitigating workers carry, the efficiency for improving operation, drop
The logistics cost of low storage.Fork truck has the characteristics that mobility strong, maneuverability, scope of activities are big, in Chinese national economy
In development, all trades and professions increase fork truck demand year by year, and market development potential is huge, and Forklift Industry has wide development machine
It meets and good operation prospect.
With a large amount of uses of fork truck, the safety issue of fork truck has become the weight that global industry Vehicle Industry must face
Want problem.It is counted according to U.S. OSHA, in about 1,000,000, U.S. fork truck, there is 85-100 people to die of forklift accidents every year, every year
3.5 ten thousand major accidents occur, 6.2 ten thousand not serious accidents cause about 1.35 hundred million dollars of direct economic loss.It is annual that thing occurs
Therefore fork truck account for about fork truck sum 11；In the entire service life of fork truck, a possibility that accident occurs, reaches 90%, fork
Vehicle safety accident causes the economic loss of great personal injury, and the safety problem of fork truck has become global industry Vehicle Industry must
The major issue that must be faced.In all kinds of fork truck safety accidents, accident specific gravity maximum caused by fork truck is turned on one's side accounts for about 42%, therefore,
Improving fork truck cornering stiffnesses is the key measure for reducing this kind of accident.
The rear axle center of four fulcrum forklift of conventional balanced weight formula and vehicle frame are stud connection, the center of fork lift back wheel axis and two
A front-wheel is three fulcrums for supporting car body, the triangle of so-called fork truck steadily of centre of gravity is constituted, such as Fig. 1 a.In concave-convex road surface
On, by hind axle teeter attract concave-convex road surface bring vibrate.But fork truck will appear inclination of vehicle when taking a sudden turn,
Cause centre-of gravity shift (beyond steadily of centre of gravity triangle), especially the high load-carrying of pallet fork and in it is high-order when take a sudden turn, side occurs
A possibility that inclining is very big.
Avoid such case, it is necessary to expand stability region, if the vehicle frame of stud connection can be passed through in turning
It is locked with rear axle, at this moment fork truck just becomes four-point supporting, is formed and stablizes quadrilateral area, such as Fig. 1 b.At this moment, center fore-and-aft distance
Constant, lateral distance increases, i.e. B1=B2, A1 < A2, stability region expand, and stability improves.Based on this principle, this reality
A kind of fork truck lateral stability locking system is proposed with novel.
Utility model content
The purpose of this utility model is to will appear inclination of vehicle when swerving for fork truck in the market, causes center of gravity inclined
Move, it is serious to will cause vehicle rollover, especially the high load-carrying of pallet fork and in it is high-order when take a sudden turn, turn on one's side a possibility that
And propose to prevent a kind of fork truck lateral stability locking system of rollover.
Technical problem to be solved in the utility model is realized using following technical scheme.
A kind of fork truck lateral stability locking system, vehicle frame and steeraxle including fork truck, between the vehicle frame and steeraxle
It is connected with locked cylinder, the locked cylinder includes the oil pocket and piston handle for being located at cylinder interior, outside the middle part of the piston handle
It is installed with the stripper loop that oil pocket is separated into upper oil cavitie, lower oil cavitie week；The cylinder body is externally connected to solenoid valve and trimmer valve, institute
The throttle orifice stated on solenoid valve is connected to lower oil cavitie, and the trimmer valve is connected to by throttle orifice with upper oil cavitie.
Further scheme, the both ends of the locked cylinder are installed with the articulated joint for connecting with steeraxle respectively and are used for
The hinge eyes being connect with vehicle frame.
Further scheme, the articulated joint is installed in the end of piston handle and connect with the trunnion on steeraxle, described
Hinge eyes are connect with the connecting plate on vehicle frame.
Further scheme, the solenoid valve are two-position two-way solenoid valve.
Further scheme further includes load transducer, yaw-rate sensor, vehicle speed sensor, mast height sensing
Device and controller, the load transducer is installed in the angle coupling of forklift door frame hoisting system high-pressure oil pipe, for acquiring
Lifted load information；The yaw-rate sensor is installed on the upper sealing plate of hydraulic oil tank of forklift, for acquiring fork truck cross
To amplitude of fluctuation information；The vehicle speed sensor is installed on forklift gear-box, for acquiring gear rotational speed information and then calculating
Speed out；The mast height is installed on outer portal frame of forklift, for acquiring the real-time lifting altitude data of inner upright mounting；Institute
Controller is stated to be acquired for receiving load transducer, yaw-rate sensor, vehicle speed sensor and mast height
To car status information after be analyzed and processed, and then control the movement of the solenoid valve.
Above-mentioned load transducer, yaw-rate sensor, vehicle speed sensor, mast height and controller are
The common conventional instrument in fork truck field, working principle are also known with connection relationship.
The solenoid valve is two-position two-way solenoid valve, is normally close valve, for controlling leading to for upper and lower oil pocket in locked cylinder
It is disconnected.When the solenoid valve is energized, the upper oil cavitie of locked cylinder is connected with lower oil cavitie, and the stretching motion of locked cylinder allows vehicle frame certainly
By swinging, fork truck is in normal three dotted states；When solenoid valve power-off, the upper oil cavitie and lower oil cavitie of locked cylinder are disconnected, i.e.,
Locked cylinder does not move, that is, is rigid connection between vehicle frame and steeraxle, then fork truck becomes four fulcrum supports, improves fork
The stability of vehicle avoids its rollover.
The top of locked cylinder passes through in hinge eyes and the extending bracket being mounted at vehicle frame tailstock in the utility model
Connecting plate connection, the bottom end of locked cylinder is mounted on the trunnion on steeraxle top by articulated slab, even if vehicle frame passes through lock
Stand oil cylinder links into an integrated entity with steeraxle.
When fork truck starting, solenoid valve obtains electric, pushes the spool of solenoid valve, opens its throttle orifice, thus make upper oil cavitie,
Trimmer valve and lower oil cavitie form oil circuit, and the hydraulic oil in lower oil cavitie enters upper oil cavitie by throttle orifice, the trimmer valve of solenoid valve
In, move upwards piston handle；Or the hydraulic oil in upper oil cavitie enters lower oil cavitie by the throttle orifice of trimmer valve, solenoid valve
In, move downward piston handle.Because trimmer valve has throttling action, so that the piston movement speed of locking cylinder is slow, can be used as
Hydraulic spring grease cup uses, and certain pressure pulse is absorbed by trimmer valve.In this way fork truck straight way traveling encounter uneven road surface when,
Locked cylinder then plays the role of flexible support, increases lateral stability.
When vehicle takes a sudden turn, and travel speed or angular speed are more than the value set in controller, then controller control is locked
Solenoid valve power loss in stand oil cylinder, electromagnetism valve lift pin close throttle orifice, the upper oil cavitie of locked cylinder is under by spring pushed home
Oil pocket disconnects, i.e., locked cylinder does not move, that is, is rigid connection between vehicle frame and steeraxle, so that four of fork truck itself
Wheel supports vehicle body simultaneously, increases the stability of lateral direction of car, avoids its rollover.
Wherein travel speed or the setting value of angular speed are lifted load, the door frame of the fork truck detected by load transducer
It is fixed that the data of the inner upright mounting lifting altitude of height sensor detection are come.
Detailed description of the invention
Fig. 1 is the stability principle schematic diagram of the utility model；
Fig. 2 is the utility model structure diagram；
Fig. 3 is the structural schematic diagram of locked cylinder in the utility model；
Fig. 4 is the cross-sectional view of Fig. 3；
Fig. 5 is the structural schematic diagram of the steeraxle in the utility model.
In figure: 1- vehicle frame, 101- connecting plate；2- steeraxle, 201- trunnion；3- locked cylinder, 301- cylinder body, 302- are hinged
Head, 303- hinge eyes, 304- lower oil cavitie, 305- upper oil cavitie, 306- solenoid valve, 307- trimmer valve, 308- throttle orifice, 309- are living
Fill in handle, 310- stripper loop.
Specific embodiment
With reference to the accompanying drawing, by embodiment, the utility model is further described.
As shown in Figure 2-5, a kind of fork truck lateral stability locking system, vehicle frame 1 and steeraxle 2 including fork truck, the vehicle
Locked cylinder 3 is connected between frame 1 and steeraxle 2, the locked cylinder 3 includes the oil pocket and piston being located inside cylinder body 301
Handle 309, the middle part periphery of the piston handle 309 are installed with the stripper loop that oil pocket is separated into upper oil cavitie 305, lower oil cavitie 304
310；The cylinder body 301 is externally connected to solenoid valve 306 and trimmer valve 307, and the throttle orifice 308 on the solenoid valve 306 is under
Oil pocket 304 is connected to, and the trimmer valve 307 is connected to by throttle orifice 308 with upper oil cavitie 305.
Further scheme, the both ends of the locked cylinder 3 are installed with the articulated joint 302 for connecting with steeraxle 2 respectively
With the hinge eyes 303 for being connect with vehicle frame 1.
Further scheme, the articulated joint 302 be installed in the end of piston handle 309 and with the trunnion 201 on steeraxle 2
Connection, the hinge eyes 303 are connect with the connecting plate 101 on vehicle frame 1.
Further scheme, the solenoid valve 306 is two-position two-way solenoid valve.
Further scheme further includes load transducer, yaw-rate sensor, vehicle speed sensor, mast height sensing
Device and controller, the load transducer is installed in the angle coupling of forklift door frame hoisting system high-pressure oil pipe, for acquiring
Lifted load information；The yaw-rate sensor is installed on the upper sealing plate of hydraulic oil tank of forklift, for acquiring fork truck cross
To amplitude of fluctuation information；The vehicle speed sensor is installed on forklift gear-box, for acquiring gear rotational speed information and then calculating
Speed out；The mast height is installed on outer portal frame of forklift, for acquiring the real-time lifting altitude data of inner upright mounting；Institute
Controller is stated to be acquired for receiving load transducer, yaw-rate sensor, vehicle speed sensor and mast height
To car status information after be analyzed and processed, and then control the movement of the solenoid valve 306.
When fork truck starting, solenoid valve obtains electric, pushes the spool of solenoid valve, opens its throttle orifice, thus make upper oil cavitie,
Trimmer valve and lower oil cavitie form oil circuit, and the hydraulic oil in lower oil cavitie enters upper oil cavitie by throttle orifice, the trimmer valve of solenoid valve
In, move upwards piston handle；Or the hydraulic oil in upper oil cavitie enters lower oil cavitie by the throttle orifice of trimmer valve, solenoid valve
In, move downward piston handle.Because trimmer valve has throttling action, so that the piston movement speed of locking cylinder is slow, can be used as
Hydraulic spring grease cup uses, and certain pressure pulse is absorbed by trimmer valve.In this way fork truck straight way traveling encounter uneven road surface when,
Locked cylinder then plays the role of flexible support, increases lateral stability.
The inner upright mounting that the lifted load of the fork truck first detected according to load transducer on fork truck, mast height detect
The data of lifting altitude determine the setting value of its travel speed or angular speed.When vehicle zig zag, travel speed or angular speed
When more than setting value in controller, then the solenoid valve power loss in controller control locked cylinder, electromagnetism valve lift pin are pushed away by spring
Return in situ, close throttle orifice, the upper oil cavitie and lower oil cavitie of locked cylinder disconnect, i.e., locked cylinder does not move, that is, vehicle frame with
It is rigid connection between steeraxle, so that four wheels of fork truck itself support vehicle body simultaneously, (such as Fig. 1 b) at this moment, center is longitudinal
Apart from constant, lateral distance increases, i.e. B1=B2, A1 < A2, stability region expand, and stability improves.Increase vehicle
Lateral stability, avoids its rollover.
In addition, embodiment proposed in this specification and attached drawing are only used for the excellent of example the utility model aim
Select embodiment, it is no intended to the scope of the utility model is limited, therefore understands that without departing substantially from the spirit and scope of the utility model
In the case of can make other equivalent schemes and modification, also belong to the protection scope of the utility model.
Claims (5)
1. a kind of fork truck lateral stability locking system, vehicle frame (1) and steeraxle (2) including fork truck, it is characterised in that: the vehicle
It is connected between frame (1) and steeraxle (2) locked cylinder (3), the locked cylinder (3) includes being located at cylinder body (301) inside
Oil pocket and piston handle (309), the middle part periphery of the piston handle (309), which is installed with, is separated into upper oil cavitie (305), lower oil for oil pocket
The stripper loop (310) of chamber (304)；The cylinder body (301) is externally connected to solenoid valve (306) and trimmer valve (307), the electromagnetism
Throttle orifice (308) on valve (306) is connected to lower oil cavitie (304), and the trimmer valve (307) passes through throttle orifice (308) and oils
Chamber (305) connection.
2. a kind of fork truck lateral stability locking system according to claim 1, it is characterised in that: the locked cylinder (3)
Both ends be installed with articulated joint (302) for connecting with steeraxle (2) and the hinge eyes for connecting with vehicle frame (1) respectively
(303).
3. a kind of fork truck lateral stability locking system according to claim 2, it is characterised in that: the articulated joint (302)
It is installed in the end of piston handle (309) and is connect with the trunnion (201) on steeraxle (2), the hinge eyes (303) and vehicle frame
(1) connecting plate (101) connection on.
4. a kind of fork truck lateral stability locking system according to claim 1, it is characterised in that: the solenoid valve (306)
For two-position two-way solenoid valve.
5. a kind of fork truck lateral stability locking system according to claim 1, it is characterised in that: further include load sensing
Device, yaw-rate sensor, vehicle speed sensor, mast height and controller, the load transducer are installed on fork
Car door is erected in liter angle coupling of system high pressure oil pipe, for acquiring lifted load information；The yaw-rate sensor
It is installed on the upper sealing plate of hydraulic oil tank of forklift, for acquiring fork truck horizontal swing amplitude information；The vehicle speed sensor installation
In on forklift gear-box, speed is calculated in turn for acquiring gear rotational speed information；The mast height is installed on fork
On vehicle outer mast, for acquiring the real-time lifting altitude data of inner upright mounting；The controller is for receiving load transducer, yaw angle
It is analyzed and processed after velocity sensor, the collected car status information of vehicle speed sensor and mast height institute, into
And control the movement of the solenoid valve (306).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821090755.5U CN208454416U (en) | 2018-07-06 | 2018-07-06 | A kind of fork truck lateral stability locking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821090755.5U CN208454416U (en) | 2018-07-06 | 2018-07-06 | A kind of fork truck lateral stability locking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208454416U true CN208454416U (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821090755.5U Active CN208454416U (en) | 2018-07-06 | 2018-07-06 | A kind of fork truck lateral stability locking system |
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| CN (1) | CN208454416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529501A (en) * | 2018-07-06 | 2018-09-14 | 安徽合力股份有限公司 | A kind of fork truck lateral stability locking system |
| CN115562328A (en) * | 2022-10-26 | 2023-01-03 | 株洲时代新材料科技股份有限公司 | Attitude control device and control method for arch bridge inspection vehicle |
-
2018
- 2018-07-06 CN CN201821090755.5U patent/CN208454416U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529501A (en) * | 2018-07-06 | 2018-09-14 | 安徽合力股份有限公司 | A kind of fork truck lateral stability locking system |
| CN115562328A (en) * | 2022-10-26 | 2023-01-03 | 株洲时代新材料科技股份有限公司 | Attitude control device and control method for arch bridge inspection vehicle |
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