A semi-trailer suspension reinforcing protection structure

Abstract

This utility model discloses a semi-trailer suspension reinforcement and protection structure, comprising multiple sets of vertically stacked spring steels. Each uppermost spring steel has lugs at both ends, with wear-resistant bushings fitted inside the lugs. Two sets of damping rods are symmetrically installed on the side walls of each lug. The beneficial effects are: this utility model, by setting two sets of independently adjustable damping rods and supports between the lugs of the leaf springs to form a reinforcement and buffer protection mechanism, allows the damping rods to absorb and buffer the impact force on the spring steel plates during use, thus preventing the lugs from receiving excessive impact force and providing protection and reinforcement. Furthermore, it prevents excessive deformation of the spring steel plates, thus preventing fatigue and ensuring suspension performance, thereby effectively improving the service life of the leaf springs.

Description

Technical Field

[0001] This utility model relates to the technical field of semi-trailer suspension systems, specifically to a semi-trailer suspension reinforcement and protection structure. Background Technology

[0002] Leaf springs are key load-bearing components in automotive suspension systems. Their main functions are to transmit vertical loads, mitigate road impacts, and dampen body vibrations, significantly impacting ride comfort, handling stability, and load-bearing capacity. In practical applications, automotive leaf springs are typically composed of multiple stacked spring steel leaves, secured together using bolts and other connecting components.

[0003] During use, the leaf springs of existing semi-trailer suspensions are frequently subjected to alternating loads and impact loads, which can easily lead to fatigue cracks at stress concentration points on the spring plates (such as the spring plate lugs). As the service time increases, the fatigue cracks will continue to expand, eventually leading to spring plate breakage and fatigue, resulting in a low service life. Therefore, there is an urgent need for a semi-trailer suspension reinforcement and protection structure to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved The technical problem to be solved by this utility model is to provide a semi-trailer suspension reinforcement and protection structure in light of the current state of the technology.

[0005] (II) Technical Solution This utility model is achieved through the following technical solution: This utility model proposes a semi-trailer suspension reinforcement and protection structure, including multiple sets of vertically stacked spring steels. The uppermost spring steel has lugs at both ends, and wear-resistant bushings are fitted inside the lugs. Two sets of damping rods are symmetrically installed on the side walls of the lugs. A support is provided at one end of each damping rod, and a connecting cavity is opened at both ends of each support. Connecting rods are provided on the two sets of supports. A locking bolt passes through the middle of the spring steel, and a locking nut is fitted on the locking bolt. Two sets of spring frames are also symmetrically installed at both ends of the spring steel. Rivets are provided on the bottom wall of the spring frames, and a sleeve is fixed at the top of the spring frames.

[0006] Furthermore, the spring steel has an arc-shaped structure and its specifications decrease sequentially from top to bottom.

[0007] Furthermore, the rolled ears are formed at both ends of the spring steel, and the wear-resistant bushings are welded inside the rolled ears.

[0008] Furthermore, the fixed part of the damping rod is hinged to the support, and the movable part of the damping rod is hinged to the side wall of the lug.

[0009] Furthermore, the connecting rod is welded between the supports, and the connecting cavity is formed at both ends of the supports.

[0010] Furthermore, the locking bolt passes through the spring steel, and the locking nut is connected to the locking bolt by a thread.

[0011] Furthermore, the spring frame has a U-shaped structure, and the bottom end of the spring frame is fixedly connected to the spring steel by the rivet.

[0012] Furthermore, the sleeve is threaded onto the top of the spring frame, and the sleeve is in contact with the surface of the spring steel.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model has the following advantages: This invention provides a reinforced buffer protection mechanism consisting of two independently adjustable damping rods and supports between the lugs of a leaf spring. During the use of the leaf spring, the damping rods can absorb and buffer the impact force on the spring steel plate, thereby preventing the lugs from being subjected to large impact forces and protecting and reinforcing them. On the other hand, they can prevent the spring steel plate from undergoing excessive deformation and fatigue, ensuring its suspension performance and thus effectively improving the service life of the leaf spring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the semi-trailer suspension reinforcement and protection structure described in this utility model; Figure 2 This is a bottom view of the semi-trailer suspension reinforcement and protection structure described in this utility model; Figure 3 This is a top view of a semi-trailer suspension reinforcement and protection structure described in this utility model.

[0015] The annotations in the attached figures are explained as follows: 1. Spring steel; 2. Ear; 3. Wear-resistant bushing; 4. Locking bolt; 5. Locking nut; 6. Spring frame; 7. Sleeve; 8. Damping rod; 9. Support; 10. Connecting rod; 11. Connecting cavity; 12. Rivet. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] like Figures 1-3As shown, this embodiment of a semi-trailer suspension reinforcement and protection structure includes multiple sets of vertically stacked spring steels 1, which can form a leaf spring as the suspension system of the semi-trailer. Both ends of the uppermost spring steel 1 are provided with lugs 2 for easy connection to the vehicle frame. Wear-resistant bushings 3 are fitted inside the lugs 2 to improve their wear resistance. Two sets of damping rods 8 are symmetrically installed on the side walls of the lugs 2. One end of each damping rod 8 is provided with a support 9, and both ends of the support 9 are provided with connecting cavities 11. The two sets of supports 9 are provided with connecting rods 10, which can... The impact force on the spring steel plate 1 is absorbed and buffered, thereby preventing the lug 2 from being subjected to a large impact force and protecting and reinforcing it. On the other hand, it can prevent the spring steel plate 1 from undergoing excessive deformation and fatigue. A locking bolt 4 is inserted through the middle of the spring steel 1, and a locking nut 5 is fitted on the locking bolt 4 to connect multiple sets of spring steel 1 into one. Two sets of spring frames 6 are also symmetrically installed at both ends of the spring steel 1. Rivets 12 are set on the bottom wall of the spring frame 6, and a sleeve 7 is fixed at the top of the spring frame 6 to reinforce the spring steel 1.

[0018] like Figures 1-3 In this embodiment, the spring steel 1 has an arc-shaped structure with its specifications decreasing from top to bottom. The lugs 2 are formed at both ends of the spring steel 1. The wear-resistant bushings 3 are welded inside the lugs 2. The fixed part of the damping rod 8 is hinged to the support 9, and the movable part of the damping rod 8 is hinged to the side wall of the lug 2. The connecting rod 10 is welded between the supports 9, and the connecting cavity 11 is formed at both ends of the support 9. During the use of the leaf spring, the damping rod 8 can absorb and buffer the impact force on the spring steel 1, thereby avoiding the lug 2 from being subjected to a large impact force and protecting and reinforcing it. On the other hand, it can prevent the spring steel 1 from undergoing excessive deformation and fatigue, ensuring its suspension performance and thus effectively improving the service life of the leaf spring.

[0019] like Figures 1-3 In this embodiment, the locking bolt 4 penetrates the spring steel 1, the locking nut 5 is connected to the locking bolt 4 by threads, the spring frame 6 has a U-shaped structure, the bottom end of the spring frame 6 is fixedly connected to the spring steel 1 by rivets 12, the sleeve 7 is installed on the top end of the spring frame 6 by threads, the sleeve 7 is in contact with the surface of the spring steel 1, the locking bolt 4 and the locking nut 5 can connect multiple sets of spring steel 1 into one, the spring frame 6, the sleeve 7 and the rivets 12 can reinforce the edge of the spring steel 1.

[0020] The specific implementation process of this embodiment is as follows: First, the spring steel 1 is connected to the frame of the semi-trailer through the lug 2 and the bushing 3. Then, the spring steel 1 is connected to the wheel frame of the semi-trailer through the U-shaped retainer. During use, the leaf spring formed by multiple sets of spring steel 1 can serve as the suspension system of the semi-trailer, ensuring the load requirements and driving smoothness of the semi-trailer. During the use of the leaf spring, the damping rod 8 can absorb and buffer the impact force on the spring steel 1 plate, thereby avoiding the lug 2 from being subjected to a large impact force and protecting and reinforcing it. On the other hand, it can prevent the spring steel 1 plate from undergoing excessive deformation and fatigue, ensuring its suspension performance and thus effectively improving the service life of the leaf spring.

[0021] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A semi-trailer suspension reinforcement and protection structure, characterized in that: The spring steel (1) consists of multiple vertically stacked spring steels. The uppermost spring steel (1) has lugs (2) at both ends. Wear-resistant bushings (3) are fitted inside the lugs (2). Two sets of damping rods (8) are symmetrically installed on the two side walls of the lugs (2). A support (9) is provided at one end of the damping rod (8). A connecting cavity (11) is opened at both ends of the support (9). A connecting rod (10) is provided on the two sets of supports (9). A locking bolt (4) is passed through the middle of the spring steel (1). A locking nut (5) is fitted on the locking bolt (4). Two sets of spring frames (6) are also symmetrically installed at both ends of the spring steel (1). A rivet (12) is provided on the bottom wall of the spring frame (6). A sleeve (7) is fixed at the top of the spring frame (6).

2. The semi-trailer suspension reinforcement and protection structure according to claim 1, characterized in that: The spring steel (1) has an arc-shaped structure and its specifications decrease sequentially from top to bottom.

3. The semi-trailer suspension reinforcement and protection structure according to claim 1, characterized in that: The rolled ear (2) is formed at both ends of the spring steel (1), and the wear-resistant bushing (3) is welded inside the rolled ear (2).

4. The semi-trailer suspension reinforcement and protection structure according to claim 1, characterized in that: The fixed part of the damping rod (8) is hinged to the support (9), and the movable part of the damping rod (8) is hinged to the side wall of the lug (2).

5. The semi-trailer suspension reinforcement and protection structure according to claim 4, characterized in that: The connecting rod (10) is welded between the supports (9), and the connecting cavity (11) is formed at both ends of the supports (9).

6. The semi-trailer suspension reinforcement and protection structure according to claim 5, characterized in that: The locking bolt (4) passes through the spring steel (1), and the locking nut (5) is connected to the locking bolt (4) by threads.

7. The semi-trailer suspension reinforcement and protection structure according to claim 6, characterized in that: The spring frame (6) has a U-shaped structure, and the bottom end of the spring frame (6) is fixedly connected to the spring steel (1) by the rivet (12).

8. The semi-trailer suspension reinforcement and protection structure according to claim 7, characterized in that: The sleeve (7) is threaded onto the top of the spring frame (6), and the sleeve (7) is in contact with the surface of the spring steel (1).

Images