U-bolt assembly for leaf spring suspension

Abstract

The U-bolt assembly for the plate spring suspension comprises a first pressing plate and a second pressing plate, a plate spring body is arranged between the first pressing plate and the second pressing plate, the portion, making contact with the plate spring body, of the first pressing plate is designed to be in an outer arc shape, and the portion, making contact with the plate spring body, of the second pressing plate is designed to be in an outer arc shape. The portion, making contact with the plate spring body, of the second pressing plate is in an inner arc design. Through the design of the first pressing plate, the second pressing plate, the U-bolt main body and the locking sleeve, uniform stress of the plate spring main body is guaranteed, meanwhile, locking can be achieved only by sleeving the locking sleeve on the U-bolt main body, mounting and dismounting are very convenient, practicability is high, and the plate spring is suitable for popularization and application. Through the design of the first guide frame, the first guide column, the U-bolt bodies and the second guide frame, the distance between the two U-bolt bodies can be adjusted, the plate spring mounting device can be suitable for mounting plate spring bodies with different widths, the application range is wide, and economical efficiency is good.

Description

Technical Field

[0001] The utility model belongs to the technical field related to automobile parts, and specifically relates to a U-bolt assembly for a leaf spring suspension. Background Art

[0002] Heavy trucks mostly adopt a leaf spring suspension structure. The tightening and loosening prevention effects of the U-bolt assembly in this leaf spring suspension structure directly affect the reliability of the leaf spring and related parts, and are related to the driving safety of the whole vehicle. However, the existing U-bolt assembly has more connecting parts, which affects the tightening effect of the nut. At the same time, in the actual assembly process, it is necessary to assemble flat washers, spring washers, U-nuts, etc. in combination, and the assembly process is relatively cumbersome, which affects the assembly efficiency. A leaf spring suspension structure and its U-bolt assembly proposed in Patent CN201520421379.3, after the nut is tightened, the mounting surface will undergo a slight elastic deformation, giving the nut a reverse elastic force itself, increasing the axial force to prevent it from falling off, so as to achieve the loosening prevention effect. Compared with the prior art, the spring washer is omitted, making the U-bolt assembly have a relatively simple structure, simplifying its assembly process, improving the assembly efficiency, and ensuring the tightening effect. Although this patent meets the usage requirements to a certain extent, it is found in the actual use process that this design still adopts the traditional threaded connection and fixing method of the nut and the bolt. Because there are many U-bolt assemblies on the leaf spring suspension, its installation is still relatively cumbersome, restricting the improvement of work efficiency, and the practicability and economy still need to be improved.

[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a U-bolt assembly for a leaf spring suspension. To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is:

[0005] The U-bolt assembly for a leaf spring suspension includes a first pressing plate and a second pressing plate. A leaf spring body is disposed between the first pressing plate and the second pressing plate. The part of the first pressing plate in contact with the leaf spring body adopts an outer arc design, and the part of the second pressing plate in contact with the leaf spring body adopts an inner arc design. The sides of the first pressing plate and the second pressing plate away from the leaf spring body both adopt a planar design. A locking sleeve and a first guiding frame are disposed on the side of the first pressing plate away from the leaf spring body, and a second guiding frame is disposed on the side of the second pressing plate away from the leaf spring body. The first pressing plate and the second pressing plate play a role in stable support. Through the arc design on one side of the first pressing plate and the second pressing plate, it is convenient to increase the contact area between the pressing plate and the leaf spring body to ensure uniform force between the pressing plate and the leaf spring body. The first guiding frame and the second guiding frame play a guiding role.

[0006] As a further scheme of the present utility model: One side of the locking sleeve is fixedly connected with a first guiding column, and the other end of the first guiding column is embedded in the first guiding frame. Two first guiding columns are embedded in the first guiding frame. A clearance fit is adopted between the first guiding column and the first guiding frame. The first guiding frame and the first guiding column play a guiding role.

[0007] As a further scheme of the present utility model: Two U-bolt bodies are embedded in the second guiding frame, and the other ends of the U-bolt bodies are embedded in the locking sleeve. A clearance fit is adopted between the U-bolt body and the second guiding frame. The U-bolt body and the second guiding frame play a guiding role.

[0008] As a further scheme of the present utility model: Two adjusting grooves are formed in the first pressing plate, and the U-bolt body is embedded in the adjusting grooves. Through the above design, it is convenient to adjust the distance between the two U-bolt bodies.

[0009] As a further scheme of the present utility model: Tooth grooves are formed at the ends of the U-bolt bodies away from the second guiding frame, and locking teeth are embedded in part of the tooth grooves. The tooth grooves and the locking teeth play a role in fixing and locking.

[0010] As a further scheme of the present utility model: A locking block is integrally formed on the side of the locking tooth. A guiding rod is fixedly connected to the side of the locking block away from the locking tooth. A limiting platform is integrally formed on the guiding rod. A compression spring is sleeved on the guiding rod. The guiding rod plays a guiding role, the limiting platform plays a role in limiting and protecting, and the compression spring provides pressing power for the locking block.

[0011] As a further solution of the utility model: the locking sleeve is composed of a main body seat and a sealing cover. One end of the main body seat is integrally formed with a support sleeve. A guiding cavity is provided on the main body seat. The sealing cover is arranged on one side of the guiding cavity. The locking block is embedded in the guiding cavity, and a guiding sleeve is embedded in the sealing cover. The guiding sleeve is sleeved on the guiding rod. The support sleeve plays a role in stable support, the guiding cavity plays a guiding role, and the guiding rod and the guiding sleeve play a guiding role.

[0012] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0013] In the utility model, through the design of the first pressing plate, the second pressing plate, the main body of the U-bolt and the locking sleeve, not only the uniform force on the main body of the leaf spring is ensured, but also the locking can be achieved only by sleeving the locking sleeve on the main body of the U-bolt. The installation and disassembly are very convenient, and the practicability is relatively strong.

[0014] In the utility model, through the design of the first guiding frame, the first guiding column, the main body of the U-bolt and the second guiding frame, the distance between the two main bodies of the U-bolt can be adjusted, and it can be applied to the installation of leaf spring main bodies with different widths. The application range is relatively wide and the economy is good.

[0015] The following further describes in detail the specific implementation manners of the utility model with reference to the drawings. Description of the Drawings

[0016] As a part of this application, the drawings are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation to the utility model. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

[0017] Figure 1 is the installation structure schematic diagram of the utility model;

[0018] Figure 2 is the front view of the utility model;

[0019] Figure 3 is the partial enlarged view Ⅰ of the utility model;

[0020] Figure 4 is the side view of the utility model.

[0021] In the figure: 1. Leaf spring body; 2. First guide frame; 3. First guide post; 4. U-bolt body; 5. Adjustment groove; 6. First pressing plate; 7. Locking sleeve; 8. Support sleeve; 9. Second guide frame; 10. Second pressing plate; 11. Sealing cover; 12. Main body seat; 13. Compression spring; 14. Guide rod; 15. Limit platform; 16. Guide sleeve; 17. Guide cavity; 18. Tooth groove; 19. Locking block; 20. Locking tooth.

[0022] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but not to limit the scope of the present utility model.

[0024] As Figures 1 to 4 shown, the U-bolt assembly for a leaf spring suspension includes a first pressing plate 6 and a second pressing plate 10. A leaf spring body 1 is arranged between the first pressing plate 6 and the second pressing plate 10. The part of the first pressing plate 6 in contact with the leaf spring body 1 adopts an outer arc design, and the part of the second pressing plate 10 in contact with the leaf spring body 1 adopts an inner arc design. The sides of the first pressing plate 6 and the second pressing plate 10 away from the leaf spring body 1 both adopt a plane design. A locking sleeve 7 and a first guide frame 2 are arranged on the side of the first pressing plate 6 away from the leaf spring body 1, and a second guide frame 9 is arranged on the side of the second pressing plate 10 away from the leaf spring body 1. The first pressing plate 6 and the second pressing plate 10 play a role in stable support. Through the arc design on one side of the first pressing plate 6 and the second pressing plate 10, it is convenient to increase the contact area between the pressing plate and the leaf spring body 1 to ensure uniform force between the pressing plate and the leaf spring body 1. The first guide frame 2 and the second guide frame 9 play a guiding role.

[0025] Wherein, one side of the locking sleeve 7 is fixedly connected with a first guide post 3, and the other end of the first guide post 3 is embedded in the first guide frame 2. Two first guide posts 3 are embedded in the first guide frame 2. A clearance fit is adopted between the first guide post 3 and the first guide frame 2. The first guide frame 2 and the first guide post 3 play a guiding role.

[0026] Two U-bolt bodies 4 are embedded in the second guide frame 9, and the other ends of the U-bolt bodies 4 are embedded in the locking sleeve 7. A clearance fit is adopted between the U-bolt body 4 and the second guide frame 9. The U-bolt body 4 and the second guide frame 9 play a guiding role.

[0027] There are two adjustment slots 5 provided on the first pressing plate 6, and the body 4 of the hold-down bolt is embedded in the adjustment slot 5. Through the above design, it is convenient to adjust the distance between the two bodies 4 of the hold-down bolts.

[0028] A tooth groove 18 is provided at one end of the body 4 of the hold-down bolt away from the second guide frame 9, and a locking tooth 20 is embedded in part of the tooth groove 18. The tooth groove 18 and the locking tooth 20 play a role in fixing and locking.

[0029] A locking block 19 is integrally formed on the side of the locking tooth 20. A guide rod 14 is fixedly connected to the side of the locking block 19 away from the locking tooth 20. A limiting platform 15 is integrally formed on the guide rod 14. A compression spring 13 is sleeved on the guide rod 14. The guide rod 14 plays a guiding role, the limiting platform 15 plays a role in limiting and protecting, and the compression spring 13 provides pressing power for the locking block 19.

[0030] The locking sleeve 7 is composed of a main body seat 12 and a sealing cover 11. A support sleeve 8 is integrally formed at one end of the main body seat 12. A guide cavity 17 is provided on the main body seat 12. The sealing cover 11 is arranged on one side of the guide cavity 17. A locking block 19 is embedded in the guide cavity 17. A guide sleeve 16 is embedded in the sealing cover 11. The guide sleeve 16 is sleeved on the guide rod 14. The support sleeve 8 plays a role in stable support, the guide cavity 17 plays a guiding role, and the guide rod 14 and the guide sleeve 16 play a guiding role.

[0031] The working principle of the utility model is as follows: When in use, after pulling the meshing length between the adjusting U-bolt body 4 and the second guide frame 9 to an appropriate length, pull the meshing length between the adjusting first guide frame 2 and the first guide post 3 to an appropriate length. Then, sleuth the U-bolt body 4 on the leaf spring body 1, and sleuth the locking sleeve 7 on one end of the U-bolt body 4. Press the locking sleeves 7 on the two U-bolt bodies 4 evenly to make them stably connected and locked with the U-bolt body 4. During the pressing process, since one side of the tooth groove 18 and the locking tooth 20 is designed in a slope shape, the locking tooth 20 on the U-bolt body 4 can push the locking tooth 20 on the locking block 19, so that the locking block 19 compresses the compression spring 13, facilitating the installation of the locking sleeve 7. When the locking sleeve 7 is installed in place, the locking tooth 20 on the locking block 19 is embedded in the tooth groove 18 on the U-bolt body 4. Since the other side of the tooth groove 18 and the locking tooth 20 is designed vertically, when the locking sleeve 7 wants to disengage, the tooth groove 18 will clamp the locking tooth 20 to prevent it from disengaging. During the meshing process of the locking tooth 20 and the tooth groove 18, the compression spring 13 pushes the locking block 19 to ensure the tight meshing of the locking tooth 20 and the tooth groove 18. When the device needs to be disassembled, pull the guide rod 14 to drive the locking block 19 to compress the compression spring 13 and disengage the locking tooth 20 from the tooth groove 18, and then the disassembly can be carried out. The structure of the utility model is reasonably designed, convenient for installation and use. Through the design of the first pressing plate 6, the second pressing plate 10, the U-bolt body 4 and the locking sleeve 7, not only the uniform force on the leaf spring body 1 is ensured, but also the locking can be achieved only by sleuthing the locking sleeve 7 on the U-bolt body 4. The installation and disassembly are very convenient, and the practicability is relatively strong. Through the design of the first guide frame 2, the first guide post 3, the U-bolt body 4 and the second guide frame 9, the distance between the two U-bolt bodies 4 can be adjusted, which can be applicable to the installation of leaf spring bodies 1 with different widths, with a wide application range and good economy.

[0032] The above are only the preferred embodiments of the utility model, and do not impose any form of limitation on the utility model. Although the utility model has been disclosed above with the preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art of this patent, without departing from the technical solution scope of the utility model, can make some changes or modifications using the technical content prompted above as equivalent embodiments of equivalent changes. However, as long as it does not depart from the technical solution content of the utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. A riding bolt assembly for a leaf spring suspension, comprising a first pressure plate (6) and a second pressure plate (10), characterized in that: A leaf spring body (1) is arranged between the first pressure plate (6) and the second pressure plate (10); the portion where the first pressure plate (6) contacts the leaf spring body (1) adopts an outer arc design, and the portion where the second pressure plate (10) contacts the leaf spring body (1) adopts an inner arc design; the sides of the first pressure plate (6) and the second pressure plate (10) away from the leaf spring body (1) both adopt a flat design; the side of the first pressure plate (6) away from the leaf spring body (1) is provided with a locking sleeve (7) and a first guide frame (2); the side of the second pressure plate (10) away from the leaf spring body (1) is provided with a second guide frame (9).

2. The saddle bolt assembly for a leaf spring suspension according to claim 1, characterized in that: One side of the locking sleeve (7) is fixedly connected to a No. 1 guide column (3), the other end of the No. 1 guide column (3) is embedded in the No. 1 guide frame (2), and two No. 1 guide columns (3) are embedded in the No. 1 guide frame (2).

3. The saddle bolt assembly for a leaf spring suspension according to claim 1, characterized in that: Two riding bolt bodies (4) are embedded in the second guide frame (9), and the other end of the riding bolt body (4) is embedded in the locking sleeve (7).

4. The saddle bolt assembly for a leaf spring suspension according to claim 3, characterized in that: The first pressure plate (6) is provided with two adjustment grooves (5), and the riding bolt body (4) is embedded in the adjustment grooves (5).

5. The saddle bolt assembly for a leaf spring suspension according to claim 4, characterized in that: A tooth groove (18) is formed at one end of the riding bolt body (4) away from the second guide frame (9), and locking teeth (20) are embedded in part of the tooth groove (18).

6. The saddle bolt assembly for a leaf spring suspension according to claim 5, characterized in that: A locking block (19) is integrally formed on the side of the locking tooth (20), a side of the locking block (19) away from the locking tooth (20) is fixedly connected to a guide rod (14), a limiting platform (15) is integrally formed on the guide rod (14), and a compression spring (13) is sleeved on the guide rod (14).

7. The saddle bolt assembly for a leaf spring suspension according to claim 6, characterized in that: The locking sleeve (7) is composed of a main body seat (12) and a sealing cover (11); one end of the main body seat (12) is integrally formed with a support sleeve (8); a guide cavity (17) is provided on the main body seat (12); the sealing cover (11) is provided on one side of the guide cavity (17); the locking block (19) is embedded in the guide cavity (17); the sealing cover (11) is embedded in a guide sleeve (16); and the guide sleeve (16) is sleeved on the guide rod (14).

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