Wear-resistant structure of plate spring suspension

Abstract

The utility model relates to the field of automobile suspensions, and discloses a plate spring suspension wear-resisting structure which comprises an axle, a plate spring, a side plate and a wear-resisting mechanism. A plate spring is arranged on the axle, two side plates are arranged at each of two ends of the plate spring, two identical bearing plates are fixedly connected among the four side plates, wear-resistant mechanisms are arranged on the two bearing plates, and the two wear-resistant mechanisms are connected with the plate spring. The wear-resisting mechanism comprises a first fixing plate, a steel pipe, a sleeve, a first through hole, a second through hole, a sealing gasket and a liquid inlet pipe. Compared with the prior art, the utility model has the following advantages and effects: sliding friction between the sleeve and the plate spring can be converted into rolling friction through the matching of all the parts, and the friction force between the sleeve and the plate spring is effectively reduced, so that the abrasion among all the parts is reduced, the service life is prolonged, the driving safety is improved, and the service life is prolonged. And the practicability is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension technology, and in particular to a wear-resistant structure for leaf spring suspension. Background Technology

[0002] Trailer suspension is generally a mechanical leaf spring suspension. Leaf spring suspension includes a bracket mounted on the trailer axle, a leaf spring mounted on the bracket, and two brackets mounted on the trailer main beam. The two brackets are located at both ends of the leaf spring and are equipped with a load-bearing plate above the leaf spring. The characteristic of this type of leaf spring suspension is that the working surface area of ​​the leaf spring is in contact with the load-bearing plate.

[0003] Currently, trailers equipped with leaf spring mechanical suspension experience wear and tear during steering and driving on uneven roads. Friction between the leaf springs and the support frame and balance beam causes wear to these components, requiring replacement and making repairs very difficult. Furthermore, if not maintained promptly after wear, the support frame and balance beam may break, leading to serious accidents. Therefore, we propose a wear-resistant structure for leaf spring suspension to address the problems described in the background technology. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant structure for leaf spring suspension, which can transform the sliding friction between the sleeve 7 and the leaf spring 2 into rolling friction, effectively reducing the friction between the two, thereby reducing the wear between various components, extending service life and improving driving safety.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a wear-resistant structure for leaf spring suspension, including an axle, a leaf spring, a side plate, and a wear-resistant mechanism;

[0006] The axle is provided with a leaf spring, and each end of the leaf spring is provided with two side plates. Two identical bearing plates are fixedly connected between the four side plates. Each of the two bearing plates is provided with a wear-resistant mechanism, and both wear-resistant mechanisms are connected to the leaf spring.

[0007] The wear-resistant mechanism includes a fixed plate 1, a steel pipe, a sleeve, a through hole 1, a through hole 2, a sealing gasket, and a liquid inlet pipe. The base plates of the two bearing plates are fixedly connected to two fixed plates 1, and the same steel pipe is fixedly connected between the two fixed plates 1. A sleeve is rotatably sleeved on the steel pipe, and the sleeve abuts against the leaf spring. Through the cooperative design between the axle, leaf spring, side plate, bearing plate, and wear-resistant mechanism, the sliding friction between the sleeve and the leaf spring can be transformed into rolling friction, effectively reducing the friction between the two, thereby reducing the wear between various components, extending the service life, and improving driving safety.

[0008] A further feature of this invention is that one end of the steel pipe passes through the corresponding fixing plate and side plate, which serves to limit and support the steel pipe. The steel pipe contains lubricating oil, which lubricates the sleeve and the leaf spring.

[0009] A further feature of this invention is that one end of the steel pipe is sealed with an inlet pipe, one end of the inlet pipe is provided with a valve, and the other end of the inlet pipe extends into the cavity of the steel pipe to facilitate the addition of lubricating oil.

[0010] A further feature of this invention is that the steel pipe has a through hole one, and the sleeve has multiple through holes two, each of which is adapted to the through hole one. When the sleeve rotates on the steel pipe, the sealing gasket on the sleeve disengages from the through hole one on the steel pipe, and the multiple through holes two on the sleeve correspond to the through hole one. At this time, the lubricant inside the steel pipe passes through the corresponding through holes one and two and flows between the sleeve and the leaf spring, thereby achieving the effect of lubricating the sleeve and the leaf spring, and further reducing wear.

[0011] A further feature of this invention is that a groove is provided on the inner side of the sleeve, and a sealing gasket is fixedly installed in the groove. The sealing gasket corresponds to the through hole and is used to seal the through hole.

[0012] A further feature of this invention is that: bearings are fixedly sleeved at both ends of the steel pipe, and the outer walls of the two bearings are fixedly connected to the sleeve, so as to facilitate the rotation of the sleeve on the steel pipe.

[0013] A further feature of this invention is that: a groove 2 is formed at one end of the steel pipe and corresponds to the liquid inlet pipe; a rubber protective plug is fitted into the groove 2 and sleeved on the liquid inlet pipe; by removing the rubber protective plug from the groove 2 at one end of the steel pipe, one end of the liquid inlet pipe is exposed and the valve on the liquid inlet pipe is opened; then, lubricating oil is delivered into the cavity on the steel pipe through the action of the liquid inlet pipe; afterwards, the valve on the liquid inlet pipe is closed and the rubber protective plug is installed in the groove 2, thereby achieving the purpose of adding lubricating oil and protecting the liquid inlet pipe.

[0014] A further feature of this invention is that the four side plates are located on both sides of the leaf spring, and the two supporting plates are symmetrically positioned and detachably connected.

[0015] A further feature of this invention is that two U-bolts are fitted onto the axle, with the two U-bolts located on both sides of the leaf spring for fixing the leaf spring.

[0016] A further feature of this invention is that two pressure plates are provided on the two U-bolts, the two pressure plates are respectively located at both ends of the leaf spring, and both ends of the two U-bolts are threaded with fixing nuts, thereby achieving the purpose of assembling the leaf spring and the axle.

[0017] The beneficial effects of this utility model are as follows: When the leaf spring deforms, both ends of the leaf spring interact with the two sleeves respectively. Simultaneously, with the assistance of the two bearings on the steel pipe, the sleeves rotate on the steel pipe. During this process, the sliding friction between the sleeves and the leaf spring is transformed into rolling friction, thereby reducing friction and wear. As the sleeves rotate on the steel pipe, the sealing gasket on the sleeve disengages from the through hole on the steel pipe, and multiple through holes on the sleeve align with the first through hole. At this time, the lubricant inside the steel pipe flows through the corresponding through holes and flows between the sleeve and the leaf spring, thereby lubricating the area between the sleeve and the leaf spring and further reducing wear. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of a wear-resistant structure for a leaf spring suspension proposed in this utility model;

[0020] Figure 2 This is a front view anatomical diagram of the wear-resistant structure of a leaf spring suspension proposed in this utility model.

[0021] Figure 3 This is a side view schematic diagram of a wear-resistant structure for a leaf spring suspension proposed in this utility model.

[0022] Figure 4 for Figure 2 A magnified structural diagram of point A in the middle.

[0023] In the diagram, 1. Axle; 2. Leaf spring; 3. Side plate; 4. Bearing plate; 5. Fixing plate one; 6. Steel pipe; 7. Sleeve; 8. Through hole one; 9. Through hole two; 10. Sealing gasket; 11. Liquid inlet pipe; 12. Bearing one; 13. Rubber protective plug; 14. U-bolt; 15. Pressure plate. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Reference Figure 1-4 A wear-resistant structure for a leaf spring suspension includes an axle 1, a leaf spring 2, a side plate 3, and a wear-resistant mechanism.

[0027] A leaf spring 2 is provided on the axle 1. Two side plates 3 are provided at both ends of the leaf spring 2. Two identical bearing plates 4 are fixedly connected between the four side plates 3. Wear-resistant mechanisms are provided on the two bearing plates 4. Both wear-resistant mechanisms are connected to the leaf spring 2.

[0028] The wear-resistant mechanism includes a fixed plate 5, a steel pipe 6, a sleeve 7, a through hole 8, a through hole 9, a sealing gasket 10, and a liquid inlet pipe 11. The base plates of the two bearing plates 4 are fixedly connected to two fixed plates 5. The same steel pipe 6 is fixedly connected between the two fixed plates 5. The sleeve 7 is rotatably sleeved on the steel pipe 6. The sleeve 7 abuts against the leaf spring 2. Through the cooperative design between the axle 1, leaf spring 2, side plate 3, bearing plate 4, and wear-resistant mechanism, the sliding friction between the sleeve 7 and the leaf spring 2 can be transformed into rolling friction, effectively reducing the friction between the two, thereby reducing the wear between various parts, extending the service life, and improving driving safety.

[0029] In this embodiment, one end of the steel pipe 6 passes through the corresponding fixing plate 5 and side plate 3, which is used to limit the steel pipe 6 and provide support. The steel pipe 6 contains lubricating oil, which can lubricate the sleeve 7 and the leaf spring 2.

[0030] In this embodiment, one end of the steel pipe 6 is sealed with an inlet pipe 11, one end of the inlet pipe 11 is equipped with a valve, and the other end of the inlet pipe 11 extends into the cavity of the steel pipe 6 to facilitate the addition of lubricating oil.

[0031] In this embodiment, the steel pipe 6 has a through hole 8, and the sleeve 7 has multiple through holes 9. The multiple through holes 9 are all adapted to the through hole 8. When the sleeve 7 rotates on the steel pipe 6, the sealing gasket 10 on the sleeve 7 disengages from the through hole 8 on the steel pipe 6, and the multiple through holes 9 on the sleeve 7 correspond to the through hole 8. At this time, the lubricant in the steel pipe 6 passes through the corresponding through holes 8 and through holes 9 and flows to the space between the sleeve 7 and the leaf spring 2, thereby achieving the effect of lubricating the space between the sleeve 7 and the leaf spring 2, and further reducing wear.

[0032] In this embodiment, a groove is provided on the inner side of the sleeve 7, and a sealing gasket 10 is fixedly installed in the groove. The sealing gasket 10 corresponds to the through hole 8 and is used to seal the through hole 8.

[0033] In this embodiment, bearings 12 are fixedly sleeved at both ends of the steel pipe 6, and the outer walls of the two bearings 12 are fixedly connected to the sleeve 7, so that the sleeve 7 can rotate on the steel pipe 6.

[0034] In this embodiment, a groove 2 is provided at one end of the steel pipe 6, corresponding to the liquid inlet pipe 11. A rubber protective plug 13 is fitted and connected in the groove 2. The rubber protective plug 13 is sleeved on the liquid inlet pipe 11. By removing the rubber protective plug 13 from the groove 2 at one end of the steel pipe 6, one end of the liquid inlet pipe 11 is exposed and the valve on the liquid inlet pipe 11 is opened. Then, lubricating oil is delivered into the cavity on the steel pipe 6 through the action of the liquid inlet pipe 11. After that, the valve on the liquid inlet pipe 11 is closed and the rubber protective plug 13 is installed in the groove 2, thereby achieving the purpose of adding lubricating oil and the effect of protecting the liquid inlet pipe 11.

[0035] In this embodiment, the four side plates 3 are located on both sides of the leaf spring 2, and the two bearing plates 4 are symmetrical and detachably connected.

[0036] In this embodiment, two U-bolts 14 are fitted on the axle 1. The two U-bolts 14 are located on both sides of the leaf spring 2 and are used to fix the leaf spring 2.

[0037] In this embodiment, two pressure plates 15 are provided on the two U-bolts 14. The two pressure plates 15 are located at both ends of the leaf spring 2. Both ends of the two U-bolts 14 are threaded with fixing nuts to achieve the purpose of assembling the leaf spring 2 with the axle 1.

[0038] Working principle: In use, the leaf spring 2 is installed on the axle 1 by the action of two U-bolts 14 and two pressure plates 15, so that the two ends of the leaf spring 2 abut against the two sleeves 7 respectively;

[0039] When the leaf spring 2 deforms, the two ends of the leaf spring 2 interact with the two sleeves 7 respectively. At the same time, with the assistance of the two bearings 12 on the steel pipe 6, the sleeves 7 rotate on the steel pipe 6. In this process, the sliding friction between the sleeves 7 and the leaf spring 2 is transformed into rolling friction, thereby reducing friction and wear.

[0040] As the sleeve 7 rotates on the steel pipe 6, the sealing gasket 10 on the sleeve 7 disengages from the through hole 8 on the steel pipe 6, and the multiple through holes 9 on the sleeve 7 correspond to the through hole 8. At this time, the lubricant in the steel pipe 6 passes through the corresponding through holes 8 and through holes 9 and flows to the space between the sleeve 7 and the leaf spring 2, thereby achieving the effect of lubricating the space between the sleeve 7 and the leaf spring 2, and further reducing wear.

[0041] By removing the rubber protective plug 13 from the groove 2 at one end of the steel pipe 6, one end of the liquid inlet pipe 11 is exposed and the valve on the liquid inlet pipe 11 is opened. Then, lubricating oil is delivered into the cavity on the steel pipe 6 through the action of the liquid inlet pipe 11. After that, the valve on the liquid inlet pipe 11 is closed and the rubber protective plug 13 is installed in the groove 2, thereby achieving the purpose of adding lubricating oil and protecting the liquid inlet pipe 11.

[0042] The technological advancement of this invention compared to the prior art is that the sliding friction between the sleeve 7 and the leaf spring 2 can be transformed into rolling friction through the cooperation of various components, effectively reducing the friction between the two, thereby reducing the wear between various parts, extending the service life, improving driving safety, and greatly enhancing practicality.

Claims

1. A wear-resistant structure for leaf spring suspension, characterized in that, Includes axle (1), leaf spring (2), side plate (3), and wear-resistant mechanism; The axle (1) is provided with a leaf spring (2), and each end of the leaf spring (2) is provided with two side plates (3). Two identical bearing plates (4) are fixedly connected between the four side plates (3). Each of the two bearing plates (4) is provided with a wear-resistant mechanism, and both wear-resistant mechanisms are connected to the leaf spring (2). The wear-resistant mechanism includes a fixed plate (5), a steel pipe (6), a sleeve (7), a through hole (8), a through hole (9), a sealing gasket (10), and an inlet pipe (11). The bottom plates of the two bearing plates (4) are fixedly connected to two fixed plates (5). The same steel pipe (6) is fixedly connected between the two fixed plates (5). The sleeve (7) is rotatably sleeved on the steel pipe (6). The sleeve (7) abuts against the leaf spring (2).

2. The wear-resistant structure of a leaf spring suspension according to claim 1, characterized in that: One end of the steel pipe (6) passes through the corresponding fixing plate (5) and side plate (3), and the steel pipe (6) contains lubricating oil.

3. The wear-resistant structure of a leaf spring suspension according to claim 2, characterized in that: One end of the steel pipe (6) is sealed with a liquid inlet pipe (11), one end of the liquid inlet pipe (11) is equipped with a valve, and the other end of the liquid inlet pipe (11) extends into the cavity of the steel pipe (6).

4. The wear-resistant structure of a leaf spring suspension according to claim 2, characterized in that: The steel pipe (6) has a through hole 1 (8), and the sleeve (7) has multiple through holes 2 (9), all of which are adapted to the through hole 1 (8).

5. The wear-resistant structure of a leaf spring suspension according to claim 4, characterized in that: The sleeve (7) has a groove on its inner side, and a sealing gasket (10) is fixedly installed in the groove. The sealing gasket (10) corresponds to the through hole (8).

6. The wear-resistant structure of a leaf spring suspension according to claim 1, characterized in that: Both ends of the steel pipe (6) are fixedly fitted with bearings (12), and the outer walls of the two bearings (12) are fixedly connected to the sleeve (7).

7. The wear-resistant structure of a leaf spring suspension according to claim 3, characterized in that: One end of the steel pipe (6) is provided with a groove II corresponding to the liquid inlet pipe (11). A rubber protective plug (13) is embedded in the groove II and is sleeved on the liquid inlet pipe (11).

8. The wear-resistant structure of a leaf spring suspension according to claim 1, characterized in that: The four side plates (3) are located on both sides of the leaf spring (2), and the two bearing plates (4) are symmetrical to each other.

9. The wear-resistant structure of a leaf spring suspension according to claim 1, characterized in that: Two U-bolts (14) are fitted on the axle (1), and the two U-bolts (14) are located on both sides of the leaf spring (2).

10. The wear-resistant structure of a leaf spring suspension according to claim 9, characterized in that: Two pressure plates (15) are provided on the two U-bolts (14), and the two pressure plates (15) are respectively located at both ends of the leaf spring (2). Both ends of the two U-bolts (14) are threaded with fixing nuts.

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