CN223100370U - A rigid rear axle structure and suspension - Google Patents

Abstract

The utility model belongs to the technical field of vehicles, and discloses a rigid rear axle structure and a suspension, wherein the rigid rear axle structure comprises a middle axle tube and two axle heads, the rigid rear axle structure is designed into three sections, the two axle heads are respectively arranged at two ends of the middle axle tube, the axle heads are of an L-shaped structure, each axle head comprises a transmission part and a mounting part, each of the mounting part and the transmission part is provided with a first end and a second end along the height direction of a vehicle body, the first end of the transmission part is positioned below the second end of the transmission part, the first end of the mounting part is connected with the first end of the transmission part, the second end of the mounting part is connected with the middle axle tube, the mounting part is provided with a bearing surface, and the bearing surface is lower than the top of the middle axle tube and is used for bearing a plate spring.

Description

Rigid rear axle structure and suspension

Technical Field

The utility model relates to the technical field of vehicles, in particular to a rigid rear axle structure and a suspension.

Background

The non-driven rear leaf spring type suspension is a suspension system using leaf springs as elastic elements, which can not only take on the function of a guide mechanism but also make the suspension system more simplified. The front and rear suspension of the truck can be widely applied to front and rear suspensions of the truck, and more stable and comfortable driving experience is provided for the vehicle.

Currently, there are two arrangements of leaf springs, namely, leaf springs on the upper side of the rigid shaft and on the lower side of the rigid shaft. The existing arrangement scheme has more limitation on the arrangement space of the suspension, because the leaf springs are in an idle state, the leaf spring arc height is larger, if the leaf springs are arranged on the upper side of the axle tube, the whole vehicle floor in the idle state is higher, and the cargo loading and unloading are more troublesome. If the plate spring is arranged on the lower side of the axle tube, the ground clearance of the whole vehicle is smaller, and the design requirement of the whole vehicle is not met.

Therefore, a rigid rear axle structure and suspension are needed to solve the above-mentioned problems.

Disclosure of utility model

The utility model aims to provide a rigid rear axle structure, and the plate springs are fixedly arranged on a sinking axle head under the condition of ensuring the minimum ground clearance of a middle axle tube, so that the aim of adjusting the height of a bottom plate of a whole automobile is fulfilled, the height of the automobile is reduced, goods are convenient to load and unload, and the design requirement of the whole automobile is met.

In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:

a rigid rear axle structure comprising:

a middle shaft tube;

The two shaft heads are respectively arranged at two ends of the middle shaft tube, the shaft heads are of an L-shaped structure, the shaft heads comprise a transmission part and a mounting part, the mounting part and the transmission part are respectively provided with a first end and a second end, the transmission part is positioned below the second end of the transmission part along the height direction of the vehicle body, the first end of the mounting part is connected with the first end of the transmission part, the second end of the mounting part is connected with the middle shaft tube, the mounting part is provided with a bearing surface, and the bearing surface is lower than the top of the middle shaft tube and is used for bearing a plate spring.

Preferably, the rigid rear axle structure further comprises a connecting piece, the connecting piece is of a U-shaped structure, the connecting piece comprises two connecting portions and a fixing portion connected between the two connecting portions, the mounting portion is provided with two mounting holes, the two connecting portions are respectively and slidably arranged in the corresponding mounting holes, and the fixing portion is used for fixing the plate spring.

Preferably, the rigid rear axle structure further comprises a fastener, the fastener is rotatably sleeved on the connecting portion, and the fastener can be abutted against the mounting portion, so that the connecting piece is fixed relative to the mounting portion.

Preferably, the number of the connecting pieces is two, and the two connecting pieces are opposite and are arranged at intervals along the length direction of the plate spring.

Preferably, the rigid rear axle structure further comprises protrusions, the protrusions are arranged on the bearing surface, the number of the mounting holes is multiple, and the mounting holes are located on the periphery of the protrusions and distributed in a matrix along the periphery of the protrusions.

Preferably, the rigid rear axle structure further includes a pressing plate, the pressing plate is clamped between the plate spring and the two connecting pieces, and the connecting pieces can slide along the axial direction of the mounting hole and press the pressing plate, so that the pressing plate can be abutted to the plate spring.

Preferably, the clamp plate has seted up the fixed slot, the central axis of fixed slot with the central axis of mounting hole is crossing, the quantity of fixed slot has two, two fixed slot parallel arrangement just respectively with two the connecting piece one-to-one.

Preferably, the middle shaft tube and the two shaft heads are fixedly connected through welding.

Preferably, the rigid rear axle structure further comprises a reinforcing rib, and the reinforcing rib is arranged at an included angle between the mounting part and the transmission part.

To achieve the above object, the present utility model also provides a suspension comprising a leaf spring and the above rigid rear axle structure, the leaf spring being mounted on the rigid rear axle structure.

The beneficial effects of the utility model are as follows:

The utility model provides a rigid rear axle structure, which is characterized in that two axle heads are respectively arranged at two ends of a middle axle tube, the rigid rear axle structure is designed into a three-section structure, the axle heads are of an L-shaped structure, each axle head comprises a transmission part and a mounting part, each of the mounting part and the transmission part is provided with a first end and a second end, the first ends of the transmission parts are positioned below the second ends of the transmission parts along the height direction of an automobile body, the first ends of the mounting parts are connected with the first ends of the transmission parts, the second ends of the mounting parts are connected with the middle axle tube, the mounting parts are provided with bearing surfaces, and the bearing surfaces are lower than the top of the middle axle tube along the height direction of the automobile body and are used for bearing plate springs. Compared with the traditional plate spring arrangement, the rigid rear axle structure ensures that the plate spring is fixedly arranged on the sunken installation part under the condition of ensuring the minimum ground clearance of the middle shaft tube, thereby realizing the purpose of adjusting the height of the bottom plate of the whole automobile, reducing the height of the automobile, facilitating loading and unloading cargoes and meeting the design requirement of the whole automobile.

The suspension provided by the utility model comprises a plate spring and a rigid rear axle structure, wherein the plate spring is arranged on the rigid rear axle structure. The rigid rear axle structure is designed into a three-section structure, the axle head of the L-shaped structure is of a sunk structure and is used for installing and fixing the plate spring, compared with the traditional plate spring arrangement, the plate spring is fixedly arranged on the sunk axle head under the condition of guaranteeing the minimum ground clearance of the middle axle tube, so that the purpose of adjusting the height of the bottom plate of the whole automobile is realized, the height of the automobile is reduced, goods are conveniently loaded and unloaded, and the design requirement of the whole automobile is met.

Drawings

FIG. 1 is a schematic view of a rigid rear axle structure provided by an embodiment of the present utility model;

FIG. 2 is a front view of a rigid rear axle structure provided by an embodiment of the present utility model;

FIG. 3 is an exploded schematic view of a rigid rear axle structure provided by an embodiment of the present utility model;

Fig. 4 is a schematic view of a rigid rear axle structure and a leaf spring provided in an embodiment of the present utility model.

Reference numerals:

100. A leaf spring;

1. A middle shaft tube;

2. A shaft head; 21, a transmission part, 22, a mounting part, 221, a bearing surface;

3. the connecting piece, 31, the connecting part, 32, the fixed part;

4. A fastener;

5. a protrusion;

6. a pressing plate 61, a fixing groove;

7. reinforcing ribs.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 4, in the present embodiment, a rigid rear axle structure includes a center shaft tube 1 and two stub shafts 2. Wherein, two spindle heads 2 set up respectively in the both ends of intermediate shaft tube 1, spindle head 2 is L type structure, spindle head 2 includes drive portion 21 and installation department 22, installation department 22 and drive portion 21 all have first end and second end, along the direction of height of automobile body, the first end of drive portion 21 is located the below of the second end of drive portion 21, the first end of installation department 22 is connected in the first end of drive portion 21, the second end of installation department 22 is connected in intermediate shaft tube 1, installation department 22 has loading face 221, along the direction of height of automobile body, loading face 221 is less than the top of intermediate shaft tube 1 and is used for bearing leaf spring 100. Specifically, the rigid rear axle structure is designed into a three-section structure and consists of two axle heads 2 and a middle axle tube 1, and the axle heads 2 of the L-shaped structure are sunken. The transmission part 21 of the shaft head 2 extends along the height direction of the vehicle body and is used for being connected with a transmission wheel, the installation part 22 of the shaft head 2 extends along the length direction of the middle shaft tube 1, and two ends of the installation part 22 are respectively connected with the transmission part 21 and the middle shaft tube 1. The top of the mounting portion 22 has a bearing surface 221, and the bearing surface 221 is of a sunk structure relative to the transmission portion 21 and the intermediate bearing and is used for mounting the fixed leaf spring 100, whereas the conventional leaf spring 100 is arranged on the upper side or the lower side of the rigid rear axle, which results in a higher height of the whole vehicle floor or a smaller whole vehicle ground clearance. Compared with the traditional plate spring 100 arrangement, the rigid rear axle structure in the embodiment ensures that the plate spring 100 is fixedly arranged on the sunken installation part 22 under the condition of ensuring the minimum ground clearance of the middle axle tube 1, thereby realizing the purpose of adjusting the height of the bottom plate of the whole automobile, reducing the height of the automobile, facilitating loading and unloading cargoes and meeting the design requirement of the whole automobile.

Further, with continued reference to fig. 1-4, the rigid rear axle structure further includes a connecting piece 3, the connecting piece 3 is in a U-shaped structure, the connecting piece 3 includes two connecting portions 31 and a fixing portion 32 connected between the two connecting portions 31, the mounting portion 22 is provided with two mounting holes, the two connecting portions 31 are respectively slidably disposed in the corresponding mounting holes, and the fixing portion 32 is used for fixing the leaf spring 100. Specifically, after the plate spring 100 is placed on the bearing surface 221 of the mounting portion 22, the two connecting portions 31 of the connecting piece 3 are simultaneously inserted into the corresponding two mounting holes from above the plate spring 100, so that the fixing portion 32 of the connecting piece 3 fixes the plate spring 100 on the sinking mounting portion 22, the connecting portion 31 is clamped and fixed with the mounting holes relatively, the plate spring 100 is fixed firmly, the purpose of adjusting the height of the whole vehicle bottom plate is achieved, and the vehicle body height is reduced.

Further, with continued reference to fig. 1-4, the rigid rear axle structure further includes a fastener 4, where the fastener 4 is rotatably sleeved on the connecting portion 31, and the fastener 4 can abut against the mounting portion 22, so that the connecting member 3 is fixed relative to the mounting portion 22. Specifically, the fastener 4 is a nut or a snap ring, so as to further ensure that the plate spring 100 is not easy to loose, the two connecting portions 31 of the connecting piece 3 are simultaneously inserted into the corresponding two mounting holes from the upper side of the plate spring 100, the fixing portion 32 gradually moves downwards and can fix the plate spring 100 on the bearing surface 221 of the mounting portion 22, that is, when the plate spring 100 is fixed relative to the bearing surface 221, the fastener 4 is sleeved on the connecting portion 31, and the fastener 4 is screwed, so that the fastener 4 abuts against the bottom of the fixing portion 32, and therefore the connecting piece 3 is fixed relative to the spindle nose 2, the mounting is firm, and the difficulty in loosening of the connecting piece 3 and the plate spring 100 relative to the mounting portion 22 can be ensured.

Further, with continued reference to fig. 1-4, there are two connectors 3, and the two connectors 3 are disposed opposite and spaced apart along the length of the leaf spring 100. Specifically, the mounting portion 22 is provided with four mounting holes, after the plate spring 100 is placed on the bearing surface 221 of the mounting portion 22, two connecting pieces 3 are sequentially fixed on the mounting portion 22 through corresponding mounting holes, the plate spring 100 can be positioned on the bearing surface 221 of the mounting portion 22, and finally the corresponding connecting pieces 3 are respectively sleeved through a plurality of fasteners 4 in a rotating mode, so that the plurality of connecting pieces 3 are fixed relative to the spindle nose 2, and the mounting is firm. Conversely, the fastener 4 can be screwed off, so that the connecting member 3 and the plate spring 100 can be detached, and the disassembly is convenient and the operation is simple.

Further, with continued reference to fig. 1-4, the rigid rear axle structure further includes a protrusion 5, where the protrusion 5 is disposed on the bearing surface 221, and the number of mounting holes is plural, and the plural mounting holes are distributed in a matrix along the peripheral direction of the protrusion 5 and the peripheral direction of the protrusion 5. Specifically, the bearing surface 221 is convexly provided with a protrusion 5, the plate spring 100 is fixed on the surface where the protrusion 5 is located through the connecting piece 3, the protrusion 5 can enhance the structural strength of the bearing surface 221, and damage to the structure of the mounting portion 22 under the condition that the weight of the plate spring 100 is fixed on the shaft head 2 for a long time is avoided. The periphery interval that a plurality of mounting holes set up along protruding 5 does not influence the connection between connecting piece 3 and the mounting hole, simultaneously, protruding 5's outer edge can play certain guide effect to connecting piece 3, before two connecting portions 31 of connecting piece 3 insert two corresponding mounting holes respectively from the top of leaf spring 100 simultaneously, under protruding 5's outer edge guide effect, two connecting portions 31 insert in the corresponding mounting hole simultaneously smoothly, the operating personnel of being convenient for installs fast, improves work efficiency.

Further, with continued reference to fig. 1-4, the rigid rear axle structure further includes a pressing plate 6, where the pressing plate 6 is sandwiched between the leaf spring 100 and the two connecting members 3, and the connecting members 3 can slide along the axial direction of the mounting hole and press the pressing plate 6, so that the pressing plate 6 can abut against the leaf spring 100. Specifically, the pressing plate 6 is provided with two fixing grooves 61, the central axis of the fixing grooves 61 intersects with the central axis of the mounting hole, and the two fixing grooves 61 are arranged in parallel and respectively correspond to the two connecting pieces 3 one by one. After the plate spring 100 is placed on the bearing surface 221 of the mounting portion 22, the two connecting portions 31 of the connecting piece 3 are simultaneously inserted into the corresponding two mounting holes from the upper portion of the plate spring 100, so that the fixing portion 32 of the connecting piece 3 fixes the plate spring 100 on the sinking mounting portion 22, at this time, the fixing portion 32 is pressed in the fixing groove 61 of the pressing plate 6, the pressing plate 6 is pressed on the plate spring 100, the fixing groove 61 plays a role in positioning the connecting piece 3, and the connecting piece 3 is prevented from shaking back and forth, so that the fixing effect of the connecting piece 3 is affected. At the same time, the pressing plate 6 protects the leaf spring 100, preventing the connecting piece 3 from directly wearing the leaf spring 100. Finally, the connecting piece 3 fixedly installs the plate spring 100 on the installation part 22 of the shaft head 2 through the pressing plate 6, thereby realizing the purpose of adjusting the height of the whole vehicle bottom plate and reducing the height of the vehicle body.

Further, with continued reference to fig. 1-4, the intermediate shaft tube 1 and the two stub shafts 2 are fixedly connected by welding. Specifically, the shaft head 2 adopts a forged steel or cast steel structure, the rigid rear shaft structure is designed into a three-section structure and consists of two shaft heads 2 and a middle shaft tube 1, the two shaft heads 2 are fixedly connected to the two ends of the middle shaft tube 1 in a welding mode, and the connection is firm and the structural strength is high. Optionally, the two shaft heads 2 and the middle shaft tube 1 are integrally formed in a casting mode and the like, so that the quality of the rigid rear shaft structure is improved, the production cost is saved, and the production period is shortened.

Further, with continued reference to fig. 1-4, the rigid rear axle structure further includes a stiffener 7, the stiffener 7 being disposed at an included angle between the mounting portion 22 and the driving portion 21. Specifically, the strengthening rib 7 is triangle-shaped structure, and the both ends of strengthening rib 7 are fixed connection respectively in installation department 22 and drive portion 21, avoid the axle head 2 of L type structure under the effect of leaf spring 100 self gravity and the external drive wheel of drive portion 21 under the condition that the junction of installation department 22 and drive portion 21 takes place the fracture condition of structure, and strengthening rib 7 can improve the holistic structural strength of axle head 2, prolongs the life of axle head 2.

The present embodiment also provides a suspension comprising a leaf spring 100 and a rigid rear axle structure, the leaf spring 100 being mounted on the rigid rear axle structure. Specifically, the rigid rear axle structure is designed into a three-section structure, the axle head 2 of the L-shaped structure is a sunk type structure and is used for installing and fixing the plate spring 100, compared with the traditional plate spring 100 arrangement, the plate spring 100 is fixedly arranged on the axle head 2 of the sunk type under the condition that the minimum ground clearance of the middle axle tube 1 is ensured, thereby realizing the purpose of adjusting the height of the bottom plate of the whole automobile, reducing the height of the automobile, facilitating loading and unloading cargoes and meeting the design requirement of the whole automobile.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A rigid rear axle structure comprising:

a middle shaft tube (1);

The two spindle heads (2), two spindle heads (2) set up respectively in the both ends of intermediate shaft tube (1), spindle head (2) are L type structure, spindle head (2) are including drive unit (21) and installation department (22), installation department (22) with drive unit (21) all have first end and second end, follow the direction of height of automobile body, the first end of drive unit (21) is located the below of the second end of drive unit (21), the first end of installation department (22) connect in the first end of drive unit (21), the second end of installation department (22) connect in intermediate shaft tube (1), installation department (22) have loading face (221), follow the direction of height of automobile body, loading face (221) are less than the top of intermediate shaft tube (1) and are used for bearing leaf spring (100).

2. The rigid rear axle structure according to claim 1, further comprising a connecting piece (3), wherein the connecting piece (3) is in a U-shaped structure, the connecting piece (3) comprises two connecting portions (31) and a fixing portion (32) connected between the two connecting portions (31), the mounting portion (22) is provided with two mounting holes, the two connecting portions (31) are respectively slidably arranged in the corresponding mounting holes, and the fixing portion (32) is used for fixing the leaf spring (100).

3. The rigid rear axle structure according to claim 2, further comprising a fastener (4), wherein the fastener (4) is rotatably sleeved on the connecting portion (31), and the fastener (4) can abut against the mounting portion (22) so as to fix the connecting member (3) relative to the mounting portion (22).

4. The rigid rear axle structure according to claim 2, characterized in that the number of the connection members (3) is two, and the two connection members (3) are arranged opposite to each other at a distance along the length direction of the leaf spring (100).

5. The rigid rear axle structure according to claim 2, further comprising protrusions (5), wherein the protrusions (5) are disposed on the bearing surface (221), the number of the mounting holes is plural, and the plurality of the mounting holes are located at the periphery of the protrusions (5) and distributed in a matrix along the peripheral direction of the protrusions (5).

6. The rigid rear axle structure according to claim 2, further comprising a pressing plate (6), wherein the pressing plate (6) is sandwiched between the plate spring (100) and the two connecting pieces (3), and the connecting pieces (3) can slide along the axial direction of the mounting hole and press the pressing plate (6) so that the pressing plate (6) can be abutted against the plate spring (100).

7. The rigid rear axle structure according to claim 6, wherein the pressing plate (6) is provided with fixing grooves (61), the central axis of the fixing grooves (61) is intersected with the central axis of the mounting hole, the number of the fixing grooves (61) is two, and the two fixing grooves (61) are arranged in parallel and respectively correspond to the two connecting pieces (3) one by one.

8. The rigid rear axle structure according to claim 1, characterized in that the intermediate shaft tube (1) and the two stub shafts (2) are fixedly connected by welding.

9. The rigid rear axle structure according to claim 1, characterized in that the rigid rear axle structure further comprises a reinforcing rib (7), which reinforcing rib (7) is arranged at the angle between the mounting portion (22) and the transmission portion (21).

10. Suspension, characterized in that it comprises a leaf spring (100) and a rigid rear axle structure according to any one of claims 1-9, said leaf spring (100) being mounted on said rigid rear axle structure.