Shock absorber piston assembly made of graphene composite material

Abstract

The utility model belongs to the technical field of shock absorbers, and particularly relates to a shock absorber piston assembly made of graphene composite materials, which comprises a shock absorber body. When the piston rod reciprocates, the corrugated hose can stretch out and draw back along with the piston rod, sealing protection on the connecting portion of the piston rod and the shock absorber body is always kept, external impurities are effectively prevented from entering the shock absorber body, and the service life of the shock absorber is prolonged; the rotary knob is rotated through the belt pulley and the belt to drive the two lead screws to rotate at the same time, the lead screws drive the connecting plate to move through the moving blocks, the connecting plate compresses the spring, the spring is in a slightly compressed or semi-compressed state before being used, and the compression stroke of the spring is shortened. And the elastic force of the spring in the compressed state to the shock absorber body is obviously increased, so that the shock absorber body can better adapt to different vehicle types, different road conditions and different load conditions by adjusting the elastic force of the spring.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, specifically to a vibration damper piston assembly made of graphene composite material. Background Technology

[0002] In numerous fields such as automobiles and construction machinery, vibration dampers, as key components, play a crucial role in ensuring the smoothness, comfort, and safety of equipment operation. Among them, graphene composite material vibration damper piston assemblies, with their unique physicochemical properties such as high strength, high electrical conductivity, high thermal conductivity, and excellent mechanical properties, show great application potential in the field of vibration dampers and are expected to improve the overall performance of vibration dampers.

[0003] However, existing graphene composite material vibration damper piston assemblies on the market have some problems that urgently need to be solved. In terms of structural design, the piston rod is usually exposed. In actual use, equipment is often in complex and variable environments, especially in harsh conditions such as outdoor work and construction sites. Impurities such as mud, sand, and dust from the external environment can easily penetrate the piston. Once these impurities enter, they will cause wear on the mating surfaces between the piston and cylinder due to the piston's reciprocating motion, damaging the sealing performance of the seals, leading to problems such as oil leakage and decreased vibration damping performance, seriously affecting the service life of the vibration damping device. On the other hand, the springs equipped in traditional vibration dampers usually have fixed elasticity characteristics. This means that the vibration damper cannot flexibly adjust the vibration damping effect according to actual needs when facing different working conditions and load conditions. Therefore, we propose a graphene composite material vibration damper piston assembly to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a graphene composite material shock absorber piston assembly, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A graphene composite material vibration damper piston assembly includes a vibration damper body. A limit ring is fixedly connected to the inner wall of the vibration damper body. A piston rod is provided inside the vibration damper body and is slidably connected to the limit ring. A piston is fixedly connected to the bottom end of the piston rod. The top end of the piston rod extends out of the vibration damper body and is fixedly connected to a fixing cover. Sliding grooves are formed on both inner walls of the fixing cover. A lead screw is rotatably connected between the two inner walls of the sliding grooves. A moving block is threaded onto the lead screw. A connecting plate is fixedly connected between the two moving blocks. The piston rod is slidably connected. A corrugated hose is fixedly connected between the bottom of the connecting plate and the top of the shock absorber body. The corrugated hose is sleeved on the piston rod. A spring is fixedly connected between the bottom of the connecting plate and the top of the shock absorber body. The spring is movably sleeved on the outside of the corrugated hose. The top of the lead screw extends to the top of the fixed cover and is fixedly connected to a pulley. The two pulleys are connected to the same belt. A knob is welded to the top of one of the lead screws. A U-shaped block is welded to the top of the fixed cover. A connecting buckle is welded to the top of the U-shaped block.

[0007] Furthermore, a rectangular block is welded to the top of the fixing cover, and a T-shaped rod is provided on the rectangular block.

[0008] Furthermore, a tension spring is fixedly connected to one side of the inner wall of the T-shaped rod and one side of the rectangular block support, and the tension spring is movably sleeved on the T-shaped rod.

[0009] Furthermore, the knob has multiple slots arranged in a ring, and the T-shaped rod engages with one of the slots.

[0010] Furthermore, a guide hole is provided on the rectangular block, and the rectangular block is slidably connected to the T-shaped rod through the guide hole.

[0011] Furthermore, the movable block is provided with a threaded hole, and the movable block is threadedly connected to the corresponding lead screw through the threaded hole.

[0012] Compared with the prior art, this utility model provides a shock absorber piston assembly made of graphene composite material, which has the following beneficial effects:

[0013] This invention, to prevent external impurities such as mud and sand from entering the shock absorber body and affecting the normal operation of the piston, features a corrugated hose that expands and contracts during the reciprocating motion of the piston rod. This maintains a constant seal at the connection between the piston rod and the shock absorber body, effectively preventing external impurities from entering and extending the shock absorber's service life. When adjusting the spring force, rotating the knob, via a pulley and belt drive, causes two lead screws to rotate simultaneously. The lead screws, through a moving block, move the connecting plate, compressing the spring. This ensures the spring is in a slightly compressed or semi-compressed state before use, shortening its compression stroke. The compressed spring force on the shock absorber body is significantly increased. By adjusting the spring force, the shock absorber body can better adapt to different vehicle models, road conditions, and load conditions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cut-out three-dimensional structural diagram of the shock absorber body and the fixing cover of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the other side of the fixing cover of this utility model.

[0017] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0018] In the diagram: 1. Shock absorber body; 2. Limiting ring; 3. Piston rod; 4. Piston; 5. Fixing cover; 6. Slide groove; 7. Lead screw; 8. Moving block; 9. Connecting plate; 10. Corrugated hose; 11. Spring; 12. Pulley; 13. Belt; 14. Knob; 15. U-shaped block; 16. Connecting buckle; 17. Rectangular block; 18. T-shaped rod; 19. Tension spring; 20. Slot. Detailed Implementation

[0019] 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. Example

[0020] like Figure 1-4As shown, an embodiment of the graphene composite material vibration damper piston assembly of this utility model includes a vibration damper body 1. A limiting ring 2 is fixedly connected to the inner wall of the vibration damper body 1. A piston rod 3 is provided inside the vibration damper body 1. The piston rod 3 is slidably connected to the limiting ring 2. A piston 4 is fixedly connected to the bottom end of the piston rod 3. The top end of the piston rod 3 extends to the outside of the vibration damper body 1 and is fixedly connected to a fixing cover 5. Sliding grooves 6 are provided on both sides of the inner wall of the fixing cover 5. A lead screw 7 is rotatably connected between the two sides of the inner wall of the sliding groove 6. A moving block 8 is threadedly connected to the lead screw 7. A fixed connection is made between the two moving blocks 8. A connecting plate 9 is slidably connected to the piston rod 3. A corrugated hose 10 is fixedly connected between the bottom of the connecting plate 9 and the top of the shock absorber body 1. The corrugated hose 10 is sleeved on the piston rod 3. A spring 11 is fixedly connected between the bottom of the connecting plate 9 and the top of the shock absorber body 1. The spring 11 is movably sleeved on the outside of the corrugated hose 10. The top of the lead screw 7 extends to the top of the fixed cover 5 and is fixedly connected to a pulley 12. The two pulleys 12 are connected to the same belt 13. A knob 14 is welded to the top of one of the lead screws 7. A U-shaped block is welded to the top of the fixed cover 5. 15. A connecting buckle 16 is welded to the top of the U-shaped block 15. To prevent external impurities such as mud and sand from entering the shock absorber body 1 and affecting the normal operation of the piston 4, the corrugated hose 10 can extend and retract accordingly when the piston rod 3 reciprocates, always maintaining a sealed protection at the connection between the piston rod 3 and the shock absorber body 1, effectively blocking external impurities from entering the shock absorber body 1 and extending the service life of the shock absorber. When it is necessary to adjust the elasticity of the spring 11, the T-shaped rod 18 is pulled. During the movement of the T-shaped rod 18, the tension spring 19 is stretched. At the same time, the T-shaped rod 18 engages with one of the multiple slots 20. After the groove 20 is separated, the knob 14 is rotated. The knob 14 is driven by the pulley 12 and the belt 13, which causes the two lead screws 7 to rotate simultaneously. The lead screws 7 drive the corresponding moving blocks 8 to move, and the moving blocks 8 drive the connecting plate 9 to move. The connecting plate 9 compresses the spring 11, so that the spring 11 is in a slightly compressed or semi-compressed state before use, which shortens its compression stroke. The spring 11 in the compressed state obviously increases the elastic force on the shock absorber body 1. Therefore, by adjusting the elastic force of the spring 11, the shock absorber body 1 can better adapt to different vehicle models, different road conditions and different load conditions.

[0021] In some embodiments, a rectangular block 17 is welded to the top of the fixing cover 5, and a T-shaped rod 18 is provided on the rectangular block 17.

[0022] In some embodiments, a tension spring 19 is fixedly connected to one side of the inner wall of the T-shaped rod 18 and one side of the support of the rectangular block 17, and the tension spring 19 is movably sleeved on the T-shaped rod 18.

[0023] In some embodiments, the knob 14 is provided with a plurality of slots 20 in a ring shape, and the T-shaped rod 18 is engaged with one of the slots 20. The knob 14 is designed to rotate.

[0024] In some embodiments, a guide hole is provided on the rectangular block 17, and the rectangular block 17 is slidably connected to the T-shaped rod 18 through the guide hole.

[0025] In some embodiments, the movable block 8 is provided with a threaded hole, and the movable block 8 is threadedly connected to the corresponding lead screw 7 through the threaded hole. Under the biting force of the threaded hole and the lead screw 7, the movable block 8 can be fixed after moving to a suitable position.

[0026] Working principle or structural principle: During use, when the equipment is subjected to external vibration or impact, the piston rod 3 reciprocates within the damper body 1. The piston 4, fixedly connected to the bottom end of the piston rod 3, moves accordingly within the damper body 1. Since the damper body 1 is typically filled with damping medium (such as hydraulic oil), the piston 4 exerts compression and shearing forces on the damping medium during its movement. The damping medium, through its internal viscous friction and throttling effect, converts vibration energy into heat energy and dissipates it, thereby achieving vibration damping. To prevent external impurities such as mud and sand from entering the damper body 1 and affecting the normal operation of the piston 4, the corrugated hose 10 extends and retracts accordingly when the piston rod 3 reciprocates, always maintaining a sealed connection between the piston rod 3 and the damper body 1. This effectively blocks external impurities from entering the damper body 1, extending the service life of the damper. When it is necessary to adjust the spring force of the spring 11, pull the T-shaped rod 18. During the movement of the T-shaped rod 18, the tension spring 19 is stretched. At the same time, the T-shaped rod 18 separates from one of the multiple slots 20. Then, the knob 14 is rotated. The knob 14 is driven by the pulley 12 and the belt 13, which causes the two lead screws 7 to rotate simultaneously. The lead screws 7 drive the corresponding moving blocks 8 to move. The moving blocks 8 drive the connecting plate 9 to move. The connecting plate 9 compresses the spring 11, so that the spring 11 is in a slightly compressed or semi-compressed state before use, which shortens its compression stroke. The spring 11 in the compressed state obviously increases the elastic force on the shock absorber body 1. Thus, by adjusting the elastic force of the spring 11, the shock absorber body 1 can better adapt to different vehicle models, different road conditions and different load conditions. After adjustment, the force on the T-shaped rod 18 is released, and the tension spring 19 in the stretched state returns to its original state. The tension spring 19 drives the T-shaped rod 18 to engage with another slot 20 among the multiple slots 20, thereby fixing the knob 14.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A graphene composite material vibration damper piston assembly, comprising a vibration damper body (1), characterized in that: A limiting ring (2) is fixedly connected to the inner wall of the damper body (1). A piston rod (3) is provided inside the damper body (1). The piston rod (3) is slidably connected to the limiting ring (2). A piston (4) is fixedly connected to the bottom end of the piston rod (3). The top end of the piston rod (3) extends to the outside of the damper body (1) and is fixedly connected to a fixing cover (5). Slide grooves (6) are provided on both sides of the inner wall of the fixing cover (5). A lead screw (7) is rotatably connected between the two sides of the inner wall of the slide groove (6). A moving block (8) is threaded onto the lead screw (7). A connecting plate (9) is fixedly connected between the two moving blocks (8). The connecting plate (9) is slidably connected to the piston rod (3). The bottom of the connecting plate (9) is connected to the piston rod (3). A corrugated hose (10) is fixedly connected between the top of the damper body (1). The corrugated hose (10) is sleeved on the piston rod (3). A spring (11) is fixedly connected between the bottom of the connecting plate (9) and the top of the damper body (1). The spring (11) is movably sleeved on the outside of the corrugated hose (10). The top of the lead screw (7) extends to the top of the fixed cover (5) and is fixedly connected to a pulley (12). The two pulleys (12) are connected to the same belt (13). A knob (14) is welded to the top of one of the two lead screws (7). A U-shaped block (15) is welded to the top of the fixed cover (5). A connecting buckle (16) is welded to the top of the U-shaped block (15).

2. The graphene composite material vibration damper piston assembly according to claim 1, characterized in that: A rectangular block (17) is welded to the top of the fixed cover (5), and a T-shaped rod (18) is provided on the rectangular block (17).

3. The graphene composite material vibration damper piston assembly according to claim 2, characterized in that: A tension spring (19) is fixedly connected to one side of the inner wall of the T-shaped rod (18) and one side of the rectangular block (17), and the tension spring (19) is movably sleeved on the T-shaped rod (18).

4. The graphene composite material vibration damper piston assembly according to claim 3, characterized in that: The knob (14) has multiple slots (20) arranged in a ring shape, and the T-shaped rod (18) is engaged with one of the slots (20).

5. The graphene composite material vibration damper piston assembly according to claim 4, characterized in that: The rectangular block (17) has a guide hole, and the rectangular block (17) is slidably connected to the T-shaped rod (18) through the guide hole.

6. The graphene composite material vibration damper piston assembly according to claim 5, characterized in that: The movable block (8) has a threaded hole, and the movable block (8) is threadedly connected to the corresponding lead screw (7) through the threaded hole.

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