Impact-resistant pin shaft

Abstract

The utility model discloses an anti-impact pin shaft which comprises a shaft rod, a fixed end and a movable end are arranged at the two ends of the shaft rod respectively, a first buffer plate is arranged on the inner side of the fixed end, a first spring is arranged between the fixed end and the first buffer plate in the circumferential direction of the shaft rod, and a second buffer plate is arranged on the inner side of the movable end. A second spring is arranged between the movable end and the second buffer plate in the circumferential direction of the shaft rod, a screw is arranged at the position, at one end of the movable end, of the shaft rod, and a nut is arranged at the position, on the outer side of the movable end, of the screw. The first buffer plate, the second buffer plate, the first spring and the second spring are respectively arranged at the fixed end and the movable end, and the first spring and the second spring are matched with the first buffer plate and the second buffer plate, so that a double-buffer system is formed. When the shaft rod is impacted, the buffering assemblies can sequentially play a role and gradually absorb and disperse impact force, the direct influence of the impact force on the pin shaft and equipment or structures connected with the pin shaft is effectively reduced, and the pin shaft is protected against impact damage.

Description

Technical Field

[0001] This utility model relates to an impact-resistant pin. Background Technology

[0002] In numerous mechanical devices and engineering structures, pins, as common connecting components, play a crucial role in transmitting torque, limiting relative rotation, and positioning. However, traditional pins often have limitations when dealing with impact forces under complex working conditions. When equipment is subjected to sudden impact loads during operation, such as severe bumps during vehicle travel, accidental collisions of robotic arms, or strong winds or earthquakes impacting building structures, pins are prone to deformation, bending, or even breakage. This not only causes the connection to fail, affecting the normal operation of the entire equipment, but may also lead to safety accidents, causing personal injury and property damage. Utility Model Content

[0003] The main objective of this invention is to provide an impact-resistant pin to solve the problems mentioned in the background section.

[0004] The objective of this utility model can be achieved by adopting the following technical solution:

[0005] An impact-resistant pin includes a shaft with a fixed end and a movable end at both ends. A first buffer plate is provided on the inner side of the fixed end, and a first spring is provided between the fixed end and the first buffer plate along the circumference of the shaft. A second buffer plate is provided on the inner side of the movable end, and a second spring is provided between the movable end and the second buffer plate along the circumference of the shaft. A screw is provided on the shaft at one end of the movable end, and a nut is provided on the screw on the outer side of the movable end.

[0006] Preferably, a first guide groove is provided at one fixed end of the shaft, a first guide block is provided inside the first buffer plate, a second guide groove is provided at one movable end of the shaft, a second guide block is provided inside the second buffer plate, and a second end guide block is provided inside the movable end.

[0007] Preferably, four first guide grooves are provided, which are evenly distributed on the shaft along its circumference; and four second guide grooves are provided, which are evenly distributed on the shaft along its circumference.

[0008] Preferably, a limiting section is provided on the shaft between one end of the movable end and the screw, the diameter of the shaft is larger than the diameter of the limiting section, and the diameter of the limiting section is larger than the diameter of the screw.

[0009] Preferably, a third guide groove is provided on the limiting segment, and a third end guide block is provided on the inner side of the movable end.

[0010] Preferably, four first springs are provided, which are evenly distributed between the fixed end and the first buffer plate; four second springs are provided, which are evenly distributed between the movable end and the second buffer plate.

[0011] Preferably, a first telescopic rod is provided between the fixed end and the first buffer plate along the circumference of the shaft, and a second telescopic rod is provided between the movable end and the second buffer plate along the circumference of the shaft.

[0012] Preferably, four first telescopic rods are provided, which are evenly distributed between the fixed end and the first buffer plate; four second telescopic rods are provided, which are evenly distributed between the movable end and the second buffer plate.

[0013] Preferably, the screw is provided with a positioning hole.

[0014] The beneficial technical effects of this utility model are as follows:

[0015] This invention forms a dual buffer system by setting a first buffer plate and a second buffer plate, along with corresponding first and second springs, at the fixed and movable ends, respectively. When the shaft is impacted, these buffer components function sequentially to gradually absorb and disperse the impact force, effectively reducing the direct impact of the impact force on the pin and connected equipment or structures, and protecting them from impact damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pin structure according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the pin shaft according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the shaft structure according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the movable end structure of an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first and second buffer plates in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram showing the positions of the first and second telescopic rods in an embodiment of this utility model.

[0022] In the diagram: 1. Shaft; 2. Fixed end; 3. Movable end; 4. First buffer plate; 5. First spring; 6. Second buffer plate; 7. Second spring; 8. Screw; 9. Nut; 10. First guide groove; 11. First guide block; 12. Second guide groove; 13. Second guide block; 14. Second end guide block; 15. Limiting section; 16. Third guide groove; 17. Third end guide block; 18. First telescopic rod; 19. Second telescopic rod; 20. Positioning hole. Detailed Implementation

[0023] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0024] like Figures 1-6 As shown, the impact-resistant pin provided in this embodiment includes a shaft 1. The two ends of the shaft 1 are respectively provided with a fixed end 2 and a movable end 3. A first buffer plate 4 is provided on the inner side of the fixed end 2. A first spring 5 is provided between the fixed end 2 and the first buffer plate 4 along the circumference of the shaft 1. A second buffer plate 6 is provided on the inner side of the movable end 3. A second spring 7 is provided between the movable end 3 and the second buffer plate 6 along the circumference of the shaft 1. A screw 8 is provided on the shaft 1 at one end of the movable end 3. A nut 9 is provided on the screw 8 on the outer side of the movable end 3.

[0025] The two ends of the first spring 5 are fixedly connected to the fixed end 2 and the first buffer plate 4, respectively, and the two ends of the second spring 7 are fixedly connected to the movable end 3 and the second buffer plate 6, respectively.

[0026] In use, insert the shaft 1 without the movable end 3 into the desired position, then put the movable end 3 onto the shaft 1, and finally tighten the nut 9 to prevent the movable end 3 from falling off. The impact can then be absorbed by the first spring 5 and the second spring 7.

[0027] In this embodiment, as Figure 3 As shown, a first guide groove 10 is provided at one end of the fixed end 2 on the shaft 1, a first guide block 11 is provided on the inner side of the first buffer plate 4, a second guide groove 12 is provided at one end of the movable end 3 on the shaft 1, a second guide block 13 is provided on the inner side of the second buffer plate 6, and a second end guide block 14 is provided on the inner side of the movable end 3. These measures restrict the movement direction of the first buffer plate 4 and the second buffer plate 6 when subjected to impact, effectively compressing the first spring 5 and the second spring 7 to ensure the buffering effect.

[0028] In this embodiment, as Figure 3As shown, four first guide grooves 10 are provided, which are evenly distributed on the shaft 1 along its circumference. Four second guide grooves 12 are provided, which are evenly distributed on the shaft 1 along its circumference. This ensures uniform force distribution, avoids local stress concentration, and improves the durability and reliability of the overall structure.

[0029] In this embodiment, as Figure 3 As shown, a limiting section 15 is provided on the shaft 1 between one end of the movable end 3 and the screw 8. The diameter of the shaft 1 is larger than the diameter of the limiting section 15, and the diameter of the limiting section 15 is larger than the diameter of the screw 8. Together with the nut 9, the shaft 1 and the screw 8 can limit the position of the movable end 3, so that the movable end 3 cannot be moved after assembly. This allows for better compression of the second spring 7 and ensures a buffering effect.

[0030] In this embodiment, as Figure 3 As shown, a third guide groove 16 is provided on the limiting section 15, and a third end guide block 17 is provided on the inner side of the movable end 3 to further restrict the movement of the movable end 3.

[0031] In this embodiment, as Figure 6 As shown, four first springs 5 ​​are provided, and the four first springs 5 ​​are evenly distributed between the fixed end 2 and the first buffer plate 4. Four second springs 7 are provided, and the four second springs 7 are evenly distributed between the movable end 3 and the second buffer plate 6, which can more effectively absorb the energy generated by the impact.

[0032] In this embodiment, as Figure 6 As shown, a first telescopic rod 18 is provided between the fixed end 2 and the first buffer plate 4 along the circumference of the shaft 1, and a second telescopic rod 19 is provided between the movable end 3 and the second buffer plate 6 along the circumference of the shaft 1. The two ends of the first telescopic rod 18 are fixedly connected to the fixed end 2 and the first buffer plate 4, respectively, and the two ends of the second telescopic rod 19 are fixedly connected to the movable end 3 and the second buffer plate 6, respectively. This can provide additional support when subjected to impact and improve structural stability.

[0033] In this embodiment, as Figure 6 As shown, four first telescopic rods 18 are provided, which are evenly distributed between the fixed end 2 and the first buffer plate 4. Four second telescopic rods 19 are provided, which are evenly distributed between the movable end 3 and the second buffer plate 6. This helps to evenly disperse the impact force and further improve the impact resistance of the structure.

[0034] In this embodiment, as Figure 1 As shown, the screw 8 is provided with a positioning hole 20, into which a locking pin can be inserted to prevent the nut 9 from loosening and falling off.

[0035] In summary, in this embodiment, a dual buffer system is formed by respectively setting a first buffer plate 4 and a second buffer plate 6, along with a first spring 5 and a second spring 7, at the fixed end 2 and the movable end 3. When the shaft 1 is impacted, these buffer components can function sequentially, gradually absorbing and dispersing the impact force, effectively reducing the direct impact of the impact force on the pin and the connected equipment or structure, and protecting them from impact damage.

[0036] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An impact-resistant pin, characterized in that: The shaft (1) includes a fixed end (2) and a movable end (3) at its two ends. A first buffer plate (4) is provided on the inner side of the fixed end (2). A first spring (5) is provided between the fixed end (2) and the first buffer plate (4) along the circumference of the shaft (1). A second buffer plate (6) is provided on the inner side of the movable end (3). A second spring (7) is provided between the movable end (3) and the second buffer plate (6) along the circumference of the shaft (1). A screw (8) is provided on one end of the movable end (3) on the shaft (1). A nut (9) is provided on the outer side of the movable end (3) on the screw (8).

2. The impact-resistant pin according to claim 1, characterized in that: A first guide groove (10) is provided on one end of the fixed end (2) of the shaft (1), a first guide block (11) is provided on the inner side of the first buffer plate (4), a second guide groove (12) is provided on one end of the movable end (3) of the shaft (1), a second guide block (13) is provided on the inner side of the second buffer plate (6), and a second end guide block (14) is provided on the inner side of the movable end (3).

3. The impact-resistant pin according to claim 2, characterized in that: The first guide groove (10) is provided with four grooves, which are evenly distributed on the shaft (1) and along its circumference. The second guide groove (12) is provided with four grooves, which are evenly distributed on the shaft (1) and along its circumference.

4. The impact-resistant pin according to claim 2, characterized in that: A limiting segment (15) is provided on the shaft (1) between one end of the movable end (3) and the screw (8). The diameter of the shaft (1) is greater than the diameter of the limiting segment (15), and the diameter of the limiting segment (15) is greater than the diameter of the screw (8).

5. The impact-resistant pin according to claim 4, characterized in that: The limiting section (15) is provided with a third guide groove (16), and the inner side of the movable end (3) is provided with a third end guide block (17).

6. The impact-resistant pin according to claim 1, characterized in that: Four first springs (5) are provided, and the four first springs (5) are evenly distributed between the fixed end (2) and the first buffer plate (4). Four second springs (7) are provided, and the four second springs (7) are evenly distributed between the movable end (3) and the second buffer plate (6).

7. The impact-resistant pin according to claim 1, characterized in that: A first telescopic rod (18) is provided between the fixed end (2) and the first buffer plate (4) along the circumference of the shaft (1), and a second telescopic rod (19) is provided between the movable end (3) and the second buffer plate (6) along the circumference of the shaft (1).

8. The impact-resistant pin according to claim 7, characterized in that: Four first telescopic rods (18) are provided, and the four first telescopic rods (18) are evenly distributed between the fixed end (2) and the first buffer plate (4). Four second telescopic rods (19) are provided, and the four second telescopic rods (19) are evenly distributed between the movable end (3) and the second buffer plate (6).

9. The impact-resistant pin according to claim 1, characterized in that: The screw (8) is provided with a positioning hole (20).

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