Plate spring suspension assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a plate spring suspension assembly and a vehicle, comprising a plate spring provided with a front end and a rear end and suitable for being connected with an axle; the tow hook integration support is connected with the front end of the plate spring, the tow hook integration support is provided with a tow hook part, the tow hook integration support is suitable for being fixed to a frame, and the tow hook integration support is suitable for fixing the front end of the plate spring; the first end of the lifting lug plate is connected with the rear end of the plate spring; and the fixed support is connected with the second end of the lifting lug plate, and the fixed support is suitable for being fixed on the frame. The tow hook integrated support is not only used for fixing a plate spring, but also facilitates traction of a vehicle when the vehicle encounters dilemma, the functions of a plate spring front support are integrated on the tow hook integrated support, two functions of one part are achieved, and during assembly, the tow hook integrated support and a fixing support are assembled on a frame, and then a lifting lug plate and the plate spring are assembled. Due to the fact that a plate spring front support is omitted, one part is omitted, the step of assembling the plate spring front support can be omitted, and assembling gaps are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a leaf spring suspension assembly and a vehicle. Background Art

[0002] At present, a vehicle includes a frame, an axle and a suspension. The axle is connected to the frame through a leaf spring suspension assembly. The leaf spring suspension assembly includes a leaf spring, a leaf spring front support, a lug plate, a leaf spring rear support and a shock absorber. A leaf spring is fixed on the axle. The front end of the leaf spring is connected to the leaf spring front support. The rear end of the leaf spring is connected to the leaf spring rear support through the lug plate. The leaf spring front support and the leaf spring rear support are connected to the frame. One end of the shock absorber is connected to the leaf spring and the other end is connected to the frame. The two ends of the leaf spring are fixed to the frame through two supports and the lug plate. When assembling, the two supports need to be assembled on the frame first, and then the lug plate and the leaf spring are assembled. There are many parts, many assembly steps, and a large assembly gap. Utility Model Content

[0003] In view of this, the utility model provides a leaf spring suspension assembly and a vehicle to solve the problem of many assembly steps caused by fixing the leaf spring on the vehicle frame through two supports.

[0004] In the first aspect, the utility model provides a leaf spring suspension assembly, including: a leaf spring having a front end and a rear end, the leaf spring being suitable for being connected to a vehicle axle; a trailer hook integrated bracket connected to the front end of the leaf spring, the trailer hook integrated bracket having a trailer hook portion, the trailer hook integrated bracket being suitable for being fixed on a vehicle frame, the trailer hook integrated bracket being suitable for fixing the front end of the leaf spring; a lifting ear plate, a first end of which is connected to the rear end of the leaf spring; a fixed support connected to the second end of the lifting ear plate, the fixed support being suitable for being fixed on the vehicle frame.

[0005] Beneficial effects: The front end of the leaf spring is integrated with the trailer hook bracket. The trailer hook integrated bracket is not only used to fix the leaf spring, but also facilitates towing the vehicle when the vehicle encounters difficulties. The function of the leaf spring front support is integrated on the trailer hook integrated bracket to achieve two functions of one part. During assembly, the trailer hook integrated bracket and the fixed support are assembled on the frame, and then the ear plate and the leaf spring are assembled. Since the leaf spring front support is eliminated, one part can be reduced, thereby reducing the steps of assembling the leaf spring front support and reducing the assembly gap.

[0006] In an optional embodiment, the front and rear ends of the leaf spring both have ears, and a bushing is provided in the ears. The bushing includes a connecting sleeve, at least two layers of flexible sleeves, at least two layers of metal sleeves and two retaining rings. The outermost layer of the bushing is a metal sleeve. The connecting sleeve is suitable for fasteners to be passed through. At least two layers of metal sleeves are arranged on the outside of the connecting sleeve. A flexible sleeve is provided between the connecting sleeve and the metal sleeve. A flexible sleeve is provided between two adjacent layers of metal sleeves. Retaining rings are provided at both ends of the connecting sleeve. At least two layers of flexible sleeves are located between the two retaining rings, and there is a gap between each layer of flexible sleeve and the retaining ring.

[0007] Beneficial effect: The setting of the gap facilitates the deformation of the flexible sleeve, which absorbs vibration and reduces noise. The setting of the connecting sleeve, metal sleeve and retaining ring can improve the structural strength, thereby improving the radial stiffness of the bushing and meeting the stiffness requirements of heavy-duty vehicles.

[0008] In an optional embodiment, the flexible sleeve is a rubber sleeve, and the connecting sleeve, the rubber sleeve and the metal sleeve are vulcanized into one body.

[0009] Beneficial effects: The connecting sleeve, the rubber sleeve and the metal sleeve form an integrated structure, which enhances the structural stability and strength. The flexible sleeve is made of rubber material, which has the advantages of good wear resistance and elasticity.

[0010] In an optional embodiment, at least two layers of metal sleeves and the flexible sleeve therebetween have openings along their axial direction and through both ends.

[0011] Beneficial effect: The setting of the opening makes it easier for the bushing to deform, and further improves the elasticity of the bushing.

[0012] In an optional embodiment, the trailer hook integrated bracket includes two brackets arranged opposite to each other and a connecting pipe connecting the two brackets, the bracket is fixed on the frame, the trailer hook portion is formed on the bracket, and the bracket is connected to the front end of the leaf spring.

[0013] Beneficial effect: The two brackets are connected into one by a connecting pipe, thereby ensuring the structural strength and stability of the trailer hook integrated bracket.

[0014] In an optional embodiment, the bracket includes a top plate, two side plates and a front plate. The two side plates are arranged opposite to each other and fixed on the top plate. The front plate is connected to the front side edge of the top plate and the front side edge of the side plate. The trailer hook is formed on the outer side plate.

[0015] Beneficial effect: The bracket is assembled into four plates, which has a simple structure and is easy to process and manufacture.

[0016] In an optional embodiment, the leaf spring suspension assembly also includes two limit clamps, one limit clamp is arranged on the front end of the leaf spring, and the other limit clamp is arranged on the rear end of the leaf spring. The limit clamp includes a hoop body and side flexible sheets arranged on the two inner side walls of the hoop body. Several leaf spring sheets of the leaf spring are suitable for being limited by the limit clamps.

[0017] Beneficial effect: During the steering process of the vehicle, the misalignment between the leaf spring leaves is limited by the limiting clamp to ensure that the leaf spring will not move left and right and make abnormal noises. The side flexible sheet can eliminate metal friction and eliminate abnormal friction noises.

[0018] In an optional embodiment, the leaf spring includes at least two leaf spring leaves, the uppermost leaf spring leaf has a curling ear, and an inter-leaf flexible sheet close to the curling ear is provided between two adjacent leaf spring leaves.

[0019] Beneficial effect: The relative sliding between the leaf springs and the transition through the flexible sheet between the leaves can eliminate metal friction and eliminate vibration and abnormal noise.

[0020] In an optional embodiment, the fixed support is fixed to the bottom surface of the frame.

[0021] Beneficial effects: Easy connection and improved assembly efficiency.

[0022] In a second aspect, the utility model further provides a vehicle, comprising: a vehicle frame; and the above-mentioned leaf spring suspension assembly, fixed on the vehicle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a partial structural schematic diagram of a leaf spring suspension assembly according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A perspective view of the trailer hook integrated frame is shown;

[0026] Figure 3 for Figure 1 The structural diagram of the leaf spring, bushing, limit clamp and backing plate shown;

[0027] Figure 4 for Figure 3 a perspective view of the bushing shown;

[0028] Figure 5 for Figure 4 a cross-sectional view of the bushing shown;

[0029] Figure 6 for Figure 3 A three-dimensional view of the limit clamp shown;

[0030] Figure 7 for Figure 3 A perspective view of the inter-sheet flexible sheet is shown.

[0031] Description of reference numerals:

[0032] 1. leaf spring; 101. curled ear; 102. leaf spring;

[0033] 2. trailer hook integrated bracket; 201. trailer hook; 202. bracket; 2021. top plate; 2022. side plate; 2023. front plate; 203. connecting pipe;

[0034] 3. Lug plate;

[0035] 4. Fixed support;

[0036] 5. Bushing; 501. Connecting sleeve; 502. Flexible sleeve; 503. Metal sleeve; 504. Retaining ring; 505. Opening;

[0037] 6. Limiting clamp; 601. Hoop body; 6011. External U-shaped plate; 6012. Internal U-shaped plate; 6013. Rivet; 602. Side flexible sheet;

[0038] 7. Inter-sheet flexible sheet;

[0039] 8. Frame;

[0040] 9. Pad;

[0041] 10. Limit block;

[0042] 11. Lower bracket;

[0043] 12. Shock absorber;

[0044] 13. Install the bracket. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0046] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0047] According to an embodiment of the utility model, on the one hand, a leaf spring suspension assembly is provided, comprising: a leaf spring 1, a trailer hook integrated bracket 2, a lifting lug plate 3 and a fixed support 4. The leaf spring 1 has a front end and a rear end, and the leaf spring 1 is suitable for connecting to the axle; the trailer hook integrated bracket 2 is connected to the front end of the leaf spring 1, the trailer hook integrated bracket 2 has a trailer hook portion 201, the trailer hook integrated bracket 2 is suitable for fixing on the frame 8, and the trailer hook integrated bracket 2 is suitable for fixing the front end of the leaf spring 1; the first end of the lifting lug plate 3 is connected to the rear end of the leaf spring 1; the fixed support 4 is connected to the second end of the lifting lug plate 3, and the fixed support 4 is suitable for fixing on the frame 8.

[0048] The leaf spring suspension assembly of this embodiment is applied, and the front end of the leaf spring 1 is integrated with the trailer hook bracket 2. The trailer hook integrated bracket 2 is not only used to fix the leaf spring 1, but also facilitates towing the vehicle when the vehicle encounters difficulties. The function of the leaf spring front support is integrated on the trailer hook integrated bracket 2, realizing two functions of one part. During assembly, the trailer hook integrated bracket 2 and the fixed support 4 are assembled on the frame 8, and then the ear plate 3 and the leaf spring 1 are assembled. Since the leaf spring front support is eliminated, one part can be reduced, and then the steps of assembling the leaf spring front support can be reduced, thereby reducing the assembly gap.

[0049] In the relevant technology, with the popularization of new energy commercial vehicles, the pain points of traditional leaf spring suspensions have become more and more obvious due to the cancellation of the engine at the cab end. There are more and more complaints from customers about the abnormal noise and maintenance of leaf springs, and the comfort experience for drivers is extremely poor. As an elastic element, the leaf spring mainly bears the load impact of the wheel on the frame. The leaf spring reduces the violent shaking of the vehicle body through its own elastic deformation. The direct contact movement of the metal structure will produce obvious "clicking" knocking noise and "squeaking" noise caused by the friction between metals. Most medium and heavy-duty trucks solve the abnormal noise problem of leaf springs mainly by adding adjustment washers between the leaf spring support and the leaf spring or the hanging ear, and reducing the knocking noise of the leaf spring by eliminating the installation gap. The setting of the adjustment washer has a certain effect on improving the abnormal noise, but the assembly efficiency is low, and the abnormal noise problem will occur again as the washer wears; some light trucks use rubber bushings, which are affected by the stiffness and life of the rubber bushings and are difficult to apply to medium and heavy trucks. Among them, the leaf spring can also be simply called a leaf spring.

[0050] In order to solve the above problem, in one embodiment, Figures 3 to 6 As shown, the front and rear ends of the leaf spring 1 are provided with a coil ear 101, and a bushing 5 is arranged inside the coil ear 101. The bushing 5 includes a connecting sleeve 501, at least two layers of flexible sleeves 502, at least two layers of metal sleeves 503 and two retaining rings 504. The outermost layer of the bushing 5 is a metal sleeve 503. The connecting sleeve 501 is suitable for fasteners to pass through. At least two layers of metal sleeves 503 are arranged outside the connecting sleeve 501. A layer of flexible sleeve 502 is arranged between the connecting sleeve 501 and the metal sleeve 503. A layer of flexible sleeve 502 is arranged between two adjacent layers of metal sleeves 503. Retaining rings 504 are arranged at both ends of the connecting sleeve 501. At least two layers of flexible sleeves 502 are located between the two retaining rings 504, and there is a gap between each layer of flexible sleeve 502 and the retaining ring 504. The setting of the gap facilitates the deformation of the flexible sleeve 502, and the deformation of the flexible sleeve 502 absorbs vibration and reduces noise. The arrangement of the connecting sleeve 501, the metal sleeve 503 and the retaining ring 504 can improve the structural strength, thereby improving the radial stiffness of the bushing 5 to meet the stiffness requirements of heavy-duty vehicles.

[0051] Furthermore, the flexible sleeve 502 and the metal sleeve 503 are both provided with three layers, so as to further reduce noise and improve structural strength.

[0052] Specifically, the bushing 5 is fixed to the trailer hook integrated bracket 2 by bolts and nuts, and the trailer hook integrated bracket 2, the fixed support 4 and the leaf spring 1 are fixed by the bushing 5, bolts and nuts without relative movement, and the assembly gap can be eliminated.

[0053] Furthermore, the rear end of the leaf spring 1 is fitted with the ear plate 3 and connected by bolts and nuts, and the ear plate 3 is fitted with the fixed support 4 and connected by bolts. The connection method between the ear plate 3, the leaf spring 1 and the fixed support 4 is simple, which improves assembly efficiency.

[0054] In one embodiment, the flexible sleeve 502 is a rubber sleeve, and the connecting sleeve 501, the rubber sleeve and the metal sleeve 503 are vulcanized into one. The connecting sleeve 501, the rubber sleeve and the metal sleeve 503 form an integrated structure to enhance structural stability and strength. The flexible sleeve 502 is made of rubber material, which has the advantages of good wear resistance and elasticity.

[0055] It is understandable that the flexible sleeve 502 may also be made of other materials and is not limited thereto.

[0056] In one embodiment, at least two layers of metal sleeves 503 and the flexible sleeve 502 therebetween have openings 505 extending along their axial direction and through both ends. The provision of the openings 505 facilitates the deformation of the bushing 5 and further improves the elasticity of the bushing 5.

[0057] In one embodiment, Figure 1 and Figure 2 As shown, the trailer hook integrated bracket 2 includes two brackets 202 arranged opposite to each other and a connecting pipe 203 connecting the two brackets 202. The bracket 202 is fixed to the vehicle frame 8, the trailer hook portion 201 is formed on the bracket 202, and the bracket 202 is connected to the front end of the leaf spring 1. The two brackets 202 are connected into one by the connecting pipe 203 to ensure the structural strength and stability of the trailer hook integrated bracket 2.

[0058] In one embodiment, the bracket 202 includes a top plate 2021, two side plates 2022 and a front plate 2023. The two side plates 2022 are arranged opposite to each other and fixed on the top plate 2021. The front plate 2023 is connected to the front side edge of the top plate 2021 and the front side edge of the side plates 2022. The trailer hook 201 is formed on the outer side plate 2022. The bracket 202 is assembled by four plates, which has a simple structure and is easy to process and manufacture.

[0059] Furthermore, the use of the trailer hook integrated bracket 2 can reduce the installation gap caused by complex components, and the smaller tolerance band can effectively avoid abnormal noise caused by some loose problems. At the same time, lightweighting can improve the vehicle energy consumption to a certain extent.

[0060] In one embodiment, Figure 1 and Figure 3 As shown, the leaf spring suspension assembly also includes two limiting clamps 6, one limiting clamp 6 is sleeved on the front end of the leaf spring 1, and the other limiting clamp 6 is sleeved on the rear end of the leaf spring 1. The limiting clamp 6 includes a clamp body 601 and side flexible sheets 602 arranged on two inner side walls of the clamp body 601. Several leaf spring leaves 102 of the leaf spring 1 are suitable for being limited by the limiting clamp 6. During the steering process of the vehicle, the staggered leaves between the leaf spring leaves 102 are limited by the limiting clamp 6 to ensure that the leaf spring 1 will not make abnormal noises when moving left and right. The side flexible sheets 602 can eliminate metal friction and eliminate abnormal noises.

[0061] Furthermore, if Figure 6 As shown, the hoop body 601 includes an outer U-shaped plate 6011 and an inner U-shaped plate 6012, the inner U-shaped plate 6012 is arranged inside the outer U-shaped plate 6011, the outer U-shaped plate 6011 and the inner U-shaped plate 6012 are connected by a fastening component, the fastening component includes a bolt and a nut, and the hoop body 601 also includes a rivet 6013, which is fixed on the inner U-shaped plate 6012 and abuts against the bottom surface of the leaf spring 1.

[0062] In one embodiment, Figure 3 As shown, the leaf spring 1 includes at least two leaf springs 102, the uppermost leaf spring 102 has a coil ear 101, and an inter-leaf flexible sheet 7 close to the coil ear 101 is provided between two adjacent leaf springs 102. The leaf springs 102 slide relative to each other through the inter-leaf flexible sheet 7, which can eliminate metal friction and vibration noise.

[0063] Furthermore, there are two leaf springs 102 , and pads 9 are provided between adjacent leaf springs 102 , on the top surface of the upper leaf spring 102 , and below the lower leaf spring 102 . The two leaf springs 102 and the pads 9 are fixed together by bolts and nuts.

[0064] In one embodiment, the side flexible sheets 602 and the inter-sheet flexible sheets 7 are rubber sheets. The side flexible sheets 602 and the inter-sheet flexible sheets 7 are made of rubber material, which has advantages such as good wear resistance and elasticity.

[0065] It can be understood that the side flexible sheets 602 and the inter-sheet flexible sheets 7 may also be made of other materials and are not limited thereto.

[0066] Specifically, the bushing 5, the limit clamp 6, the side flexible sheet 602 and the inter-sheet flexible sheet 7 form a component for reducing the noise of the leaf spring 1. The bushing 5 is made of multiple layers of vulcanized rubber and can be used on fully loaded, high-load, and high-strength vehicles; the limit clamp 6 prevents the leaf spring 1 from being misaligned and eliminates the metal friction of the leaf spring 1 by adding a layer of vulcanized rubber sheet; the relative sliding parts of the leaf spring 1 itself are transitioned through the rubber sheets between the sheets to eliminate shaking and abnormal noise. Noise reduction is achieved by using multiple components, with a better noise reduction effect, which solves the industry pain point of abnormal noise of the leaf spring.

[0067] In one embodiment, the fixed support 4 is fixed to the bottom surface of the frame 8, and the fixed support 4 is connected to the bottom surface of the frame 8, which is simple and convenient to connect and improves assembly efficiency.

[0068] In one embodiment, Figure 1 As shown, the leaf spring suspension assembly also includes a limit block 10, a lower bracket 11, an upper bracket 13, and a shock absorber 12. The limit block 10, the leaf spring 1, and the lower bracket 11 are fixed to the axle by U-shaped bolts, the lower end of the shock absorber 12 is connected to the lower bracket 11, and the upper end of the shock absorber 12 is connected to the upper bracket 13. The shock absorber 12 can reduce the vibration of the vehicle, and the vibration reduction effect is good.

[0069] Furthermore, the lower end of the shock absorber 12 is connected to the lower bracket 11 through bolts and nuts, and the upper end of the shock absorber 12 is connected to the upper bracket 13 through bolts and nuts.

[0070] Specifically, the shock absorber 12 is a cylinder-type hydraulic shock absorber, etc. It can be understood that the shock absorber 12 can also adopt other types, and is not limited thereto.

[0071] According to the embodiment of the utility model, on the other hand, a vehicle is also provided, including: a frame 8 and the above-mentioned leaf spring suspension assembly, the leaf spring suspension assembly is fixed on the frame 8. The front end of the leaf spring 1 is fixed by a trailer hook integrated bracket 2, and the trailer hook integrated bracket 2 adopts a lightweight integrated design, which improves the assembly performance, low energy consumption, effectively improves the energy consumption of the whole vehicle, reduces the maintenance cost, and improves the product competitiveness; a bushing 5 is provided in the ear 101 of the leaf spring 1, and the bushing 5 has an opening 505 and a rubber pad, which provides buffering and energy absorption at the same time, effectively improves the product life, solves the abnormal noise problem of the leaf spring, and can be applied to medium and heavy vehicles; the leaf spring 1 eliminates the abnormal noise of the metal friction of the leaf spring 1 itself by adding a rubber sheet between the sheets and a limit clamp 6 with a rubber sheet, and solves the abnormal noise problem of the leaf spring 1 itself; the two ends of the leaf spring 1 are connected with the trailer hook integrated bracket 2 and the ear plate 3 by bolts and nuts, and the lateral gap of the leaf spring is eliminated as much as possible to reduce noise.

[0072] Furthermore, the vehicles are light, medium and heavy-duty trucks, etc. The use of the above-mentioned leaf spring suspension assembly can effectively solve the abnormal noise and comfort problems of the leaf spring suspension of new energy commercial vehicles, and meet the noise reduction needs of large-tonnage commercial vehicles.

[0073] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A leaf spring suspension assembly, characterized in that: include: A leaf spring (1) having a front end and a rear end, wherein the leaf spring (1) is suitable for connection with a vehicle axle; A trailer hook integrated bracket (2) connected to the front end of the leaf spring (1), the trailer hook integrated bracket (2) having a trailer hook portion (201), the trailer hook integrated bracket (2) being suitable for being fixed on a vehicle frame, and the trailer hook integrated bracket (2) being suitable for fixing the front end of the leaf spring (1); A hanging ear plate (3), a first end of which is connected to the rear end of the leaf spring (1); A fixed support (4) is connected to the second end of the hanging ear plate (3), and the fixed support (4) is suitable for being fixed on the vehicle frame.

2. The leaf spring suspension assembly according to claim 1, characterized in that: The front and rear ends of the leaf spring (1) are both provided with a coil ear (101), a bushing (5) is arranged inside the coil ear (101), the bushing (5) comprises a connecting sleeve (501), at least two layers of flexible sleeves (502), at least two layers of metal sleeves (503) and two retaining rings (504), the outermost layer of the bushing (5) is the metal sleeve (503), the connecting sleeve (501) is suitable for fasteners to pass through, and at least two layers of the metal sleeves (503) are arranged on the connecting sleeve (501). 01), a layer of the flexible sleeve (502) is provided between the connecting sleeve (501) and the metal sleeve (503), a layer of the flexible sleeve (502) is provided between two adjacent layers of the metal sleeve (503), both ends of the connecting sleeve (501) are provided with retaining rings (504), at least two layers of the flexible sleeve (502) are located between the two retaining rings (504), and a gap is provided between each layer of the flexible sleeve (502) and the retaining ring (504).

3. The leaf spring suspension assembly according to claim 2, characterized in that: The flexible sleeve (502) is a rubber sleeve, and the connecting sleeve (501), the rubber sleeve and the metal sleeve (503) are vulcanized into one body.

4. The leaf spring suspension assembly according to claim 2, characterized in that: At least two layers of the metal sleeves (503) and the flexible sleeve (502) therebetween have openings (505) along their axial direction and through both ends.

5. The leaf spring suspension assembly according to any one of claims 1 to 4, characterized in that: The trailer hook integrated bracket (2) comprises two brackets (202) arranged opposite to each other and a connecting pipe (203) connecting the two brackets (202); the bracket (202) is fixed on the vehicle frame; the trailer hook portion (201) is formed on the bracket (202); and the bracket (202) is connected to the front end of the leaf spring (1).

6. The leaf spring suspension assembly according to claim 5, characterized in that: The bracket (202) comprises a top plate (2021), two side plates (2022) and a front plate (2023); the two side plates (2022) are arranged opposite to each other and fixed on the top plate (2021); the front plate (2023) is connected to the front side edge of the top plate (2021) and the front side edge of the side plates (2022); and the trailer hook portion (201) is formed on the outer side plate (2022).

7. The leaf spring suspension assembly according to any one of claims 1 to 4, characterized in that: The leaf spring suspension assembly further comprises two limiting clamps (6), one limiting clamp (6) being sleeved on the front end of the leaf spring (1), and the other limiting clamp (6) being sleeved on the rear end of the leaf spring (1), the limiting clamp (6) comprising a clamp body (601) and side flexible sheets (602) arranged on two inner side walls of the clamp body (601), and a plurality of leaf spring sheets (102) of the leaf spring (1) are suitable for being limited by the limiting clamp (6).

8. The leaf spring suspension assembly according to any one of claims 1 to 4, characterized in that: The leaf spring (1) comprises at least two leaf spring leaves (102), the uppermost leaf spring leaf (102) having a curling ear (101), and an inter-leaf flexible sheet (7) close to the curling ear (101) is provided between two adjacent leaf spring leaves (102).

9. The leaf spring suspension assembly according to any one of claims 1 to 4, characterized in that: The fixed support (4) is fixed on the bottom surface of the vehicle frame (8).

10. A vehicle, characterized in that: include: Frame; The leaf spring suspension assembly according to any one of claims 1 to 9 is fixed to the vehicle frame.

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