Truck steel plate spring device with self-lubricating structure

Abstract

The utility model relates to the field of steel plate springs, and discloses a truck steel plate spring device with a self-lubricating structure, which comprises a steel plate spring, the tops of the left end and the right end of the steel plate spring are fixedly connected with spring eyes, the outer walls of the spring eyes are fixedly connected with a fixing plate, and the bottom of the fixing plate is connected with the steel plate spring through an extrusion assembly. Grooves are formed in the top end and the bottom end of the steel plate spring located in the middle, and permeation holes are formed in the grooves. According to the steel plate spring, in the process that the two ends of the steel plate spring are bent upwards and restore to the original shape, the spring eye can drive the fixing plate to inject lubricating liquid into the permeation holes through the piston and the piston rod, so that the lubricating liquid can be automatically injected into the steel plate spring in the daily use process of the steel plate spring, and the maintenance frequency of the steel plate spring is greatly reduced; lubricating liquid can be conveyed among the steel plate springs through the grooves, friction among the steel plate springs is effectively reduced, and abrasion caused by friction is reduced.

Description

Technical Field

[0001] This utility model relates to the field of leaf springs, and in particular to a leaf spring device for trucks with a self-lubricating structure. Background Technology

[0002] In the freight industry, trucks are the primary means of transportation, and their operational safety and reliability are of paramount importance. During operation, trucks must withstand various complex forces from the road surface. Leaf springs, as a key component of the truck's suspension system, play a crucial role in cushioning, shock absorption, and supporting the vehicle body; their performance directly affects the truck's driving stability and the safety of cargo transportation.

[0003] In the prior art, leaf springs typically rely on manual application of grease for lubrication, which takes a long time and requires regular maintenance. This lubrication method greatly reduces the efficiency of leaf spring maintenance. In response to this technical problem, this application proposes a truck leaf spring device with a self-lubricating structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-lubricating leaf spring device for trucks. During the upward bending and return to their original shape of the leaf spring, the lugs drive the fixing plate to inject lubricant into the permeation holes via the piston and piston rod. This allows the leaf spring to automatically receive lubricant during daily use, significantly reducing the frequency of maintenance and improving maintenance efficiency. Furthermore, the grooves facilitate the distribution of lubricant between the layers of leaf springs, effectively reducing friction between multiple leaf springs, minimizing wear caused by friction, and ensuring stable performance of the leaf springs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A truck leaf spring device with a self-lubricating structure includes a leaf spring, with lugs fixedly connected to the top of both ends of the leaf spring, and a fixing plate fixedly connected to the outer wall of the lugs. The bottom of the fixing plate is connected to the leaf spring through a pressing assembly. Grooves are provided at the top and bottom of the leaf spring located in the middle, and permeation holes are provided in the grooves.

[0007] Furthermore, the extrusion assembly includes a piston located at the bottom end of the fixed plate, a piston rod slidably connected to the top of the piston, the top end of the piston rod being fixedly connected to the bottom of the fixed plate, a fixed block being rotatably connected to the outer wall of the bottom end of the piston, and the bottom end of the fixed block being fixedly connected to the top of the leaf spring.

[0008] Furthermore, the piston has an inlet and an outlet on its bottom outer wall. An inlet pipe is fixedly connected to the inlet, and a storage box is connected to the end of the inlet pipe away from the piston. The storage box is fixedly connected to the top of the leaf spring. An outlet pipe is fixedly connected to the outlet, and the other end of the outlet pipe is connected to the permeation hole at the top of the leaf spring.

[0009] Furthermore, the leaf spring has a central bolt threaded into its center.

[0010] Furthermore, the bottom of both ends of the leaf spring is provided with buckles.

[0011] Furthermore, a limit plate is fixedly connected to one end of the liquid outlet pipe that is connected to the leaf spring.

[0012] Furthermore, there are three grooves on the same piece of the leaf spring, and the three grooves are connected to each other, with the permeation hole located in the middle groove.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, when the two ends of the leaf spring bend upward and return to their original shape, the lug can drive the fixing plate to inject lubricant into the permeation hole through the piston and piston rod, so that the leaf spring can automatically inject lubricant into the leaf spring during daily use, which greatly reduces the maintenance frequency of the leaf spring and improves the maintenance efficiency of the leaf spring.

[0015] 2. In this utility model, the groove can deliver lubricant to the layers of leaf springs, effectively reducing friction between multiple leaf springs, reducing wear caused by friction, and ensuring the stable performance of the leaf springs. Attached Figure Description

[0016] Figure 1 This is a perspective view of a truck leaf spring device with a self-lubricating structure proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the groove in a truck leaf spring device with a self-lubricating structure proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the piston of a truck leaf spring device with a self-lubricating structure proposed in this utility model.

[0020] Figure 5This is a schematic diagram of the liquid outlet pipe of a truck leaf spring device with a self-lubricating structure proposed in this utility model.

[0021] Legend:

[0022] 1. Steel leaf spring; 2. Buckle; 3. Center bolt; 4. Liquid storage box; 5. Roller lug; 6. Fixing plate; 7. Piston; 8. Fixing block; 9. Liquid inlet pipe; 10. Liquid outlet pipe; 11. Groove; 12. Permeation hole; 13. Liquid inlet; 14. Liquid outlet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1-3 This utility model provides an embodiment of a truck leaf spring device with a self-lubricating structure, including a leaf spring 1. The top of both ends of the leaf spring 1 are fixedly connected to lugs 5, and the leaf spring 1 is installed via the lugs 5. A fixing plate 6 is fixedly connected to the outer wall of the lugs 5. When the leaf spring 1 bends, the lugs 5 can move along the piston rod via the fixing plate 6. A piston 7 is provided at the bottom of the fixing plate 6, and a piston rod is slidably connected to the top of the piston 7. When the piston rod is pulled out by the fixing plate 6, lubricating fluid from the reservoir 4 can be drawn into the piston 7 through the inlet pipe 9. When the fixing plate 6 pulls the piston rod out, the lubricating fluid in the reservoir 4 can be drawn into the piston 7. When the piston rod is pushed into the piston 7, the lubricant inside the piston 7 can be injected into the permeation hole 12 through the liquid outlet pipe 10. The top end of the piston rod is fixedly connected to the bottom of the fixed plate 6. The bottom outer wall of the piston 7 is rotatably connected to the fixed block 8. The bottom end of the fixed block 8 is fixedly connected to the top of the leaf spring 1. The top and bottom ends of the leaf spring 1 located in the middle are provided with grooves 11. The lubricant injected into the permeation hole 12 will flow through the grooves 11 to the middle of the leaf spring 1, thereby lubricating the contact surfaces between multiple leaf springs 1 and reducing the friction between multiple leaf springs 1. The grooves 11 are provided with permeation holes 12.

[0025] Reference Figure 3-5The piston 7 has an inlet 13 and an outlet 14 on its bottom outer wall. An inlet pipe 9 is fixedly connected to the inlet 13. When the piston rod is pulled out by the fixing plate 6, lubricant from the reservoir 4 can be drawn into the piston 7 through the inlet pipe 9. The end of the inlet pipe 9 away from the piston 7 is connected to the reservoir 4, which is fixedly connected to the top of the leaf spring 1. An outlet pipe 10 is fixedly connected to the outlet 14. When the fixing plate 6 pushes the piston rod into the piston 7, lubricant from the piston 7 can be injected into the permeation hole 12 through the outlet pipe 10. The other end of the outlet pipe 10 is connected to the permeation hole 12 at the top of the leaf spring 1. A center bolt 3 is threaded into the middle of the leaf spring 1, allowing multiple leaf springs 1 to be connected together, ensuring the integrity and stability of the leaf springs 1 during installation and use. Clips 2 are provided at the bottom of both ends of the leaf spring 1. A limiting plate is fixedly connected to one end of the outlet pipe 10 that is connected to the leaf spring 1. The limiting plate can prevent the outlet pipe 10 from detaching from the permeation hole 12. There are three grooves 11 on the same leaf spring 1, and the three grooves 11 are connected. The permeation hole 12 is located in the middle groove 11.

[0026] Working principle: After the leaf spring 1 is installed, when both ends of the leaf spring 1 bend upwards, the lug 5 pulls out the piston rod through the fixing plate 6, so that the piston 7 draws the lubricant stored in the reservoir 4 into the piston 7 through the liquid inlet pipe 9. When the leaf spring 1 returns to its original shape, the lug 5 pushes the piston rod through the fixing plate 6 to push the lubricant in the piston 7 into the permeation hole 12 through the liquid outlet pipe 10. Then the lubricant flows through the permeation hole 12 to the groove 11 of the next layer, and then flows through the permeation hole 12 of the same layer to the groove 11 of the next layer. This can lubricate multiple leaf springs 1, reduce the friction between multiple leaf springs 1, and thus improve the service life of the leaf spring 1.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A truck leaf spring device having a self-lubricating structure, characterized by, The spring includes a leaf spring (1), with lugs (5) fixedly connected to the top of both ends of the leaf spring (1). A fixing plate (6) is fixedly connected to the outer wall of the lugs (5). The bottom of the fixing plate (6) is connected to the leaf spring (1) through a pressing assembly. Grooves (11) are provided at the top and bottom of the leaf spring (1) located in the middle. Permeation holes (12) are provided in the grooves (11).

2. The truck leaf spring device having a self-lubricating structure according to claim 1, characterized in that: The extrusion assembly includes a piston (7) located at the bottom of the fixed plate (6), a piston rod is slidably connected to the top of the piston (7), the top end of the piston rod is fixedly connected to the bottom of the fixed plate (6), a fixed block (8) is rotatably connected to the outer wall of the bottom end of the piston (7), and the bottom end of the fixed block (8) is fixedly connected to the top of the leaf spring (1).

3. The truck leaf spring device with self-lubricating structure according to claim 2, characterized in that: The piston (7) has an inlet (13) and an outlet (14) on its bottom outer wall. An inlet pipe (9) is fixedly connected inside the inlet (13). The end of the inlet pipe (9) away from the piston (7) is connected to a storage box (4). The storage box (4) is fixedly connected to the top of the leaf spring (1). An outlet pipe (10) is fixedly connected inside the outlet (14). The other end of the outlet pipe (10) is connected to the permeation hole (12) at the top of the leaf spring (1).

4. The truck leaf spring device with self-lubricating structure according to claim 1, characterized in that: The leaf spring (1) is threaded with a center bolt (3) at its center.

5. The truck leaf spring device with self-lubricating structure according to claim 1, characterized in that: The bottom of the left and right ends of the leaf spring (1) is provided with buckles (2).

6. The truck leaf spring device having a self-lubricating structure according to claim 3, characterized in that: A limiting plate is fixedly connected to one end of the liquid outlet pipe (10) that is connected to the leaf spring (1).

7. A truck leaf spring device with a self-lubricating structure according to claim 1, characterized in that: There are three grooves (11) on the same steel leaf spring (1), and the three grooves (11) are connected, and the permeation hole (12) is located in the middle groove (11).

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