A shock absorber with bidirectional stroke limiting

Abstract

The utility model relates to the technical field of shock absorber, concretely to a two -way stroke limit shock absorber, including cylinder body, the surface of cylinder body is installed piston rod, the surface of piston rod is provided with limit device, limit device includes guide block, the surface fixed connection of guide block and piston rod, the inside slide connection of guide block has guide rod, the top fixed connection of guide rod has limit block, the surface contact of guide block and limit block, the surface fixed connection of cylinder body has the block, guide rod and the inside slide connection of block, the bottom of guide rod is provided with connecting assembly. The utility model, through setting limit device, can effectively two -way protection to shock absorber, avoided the damaged situation that shock absorber appeared in the process of using, and then improved the service life of shock absorber.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, and in particular to a bidirectional travel limiting shock absorber. Background Technology

[0002] A bidirectional travel limit shock absorber is a vibration damping device that limits vibration through bidirectional control. It is suitable for scenarios where it is necessary to limit the bidirectional movement of equipment to avoid overtravel collisions, such as elevators, cranes, and precision machine tools, thereby attenuating vibrations while ensuring the safe operation of the equipment.

[0003] When workers need to dampen the vibration of equipment, they install shock absorbers on the equipment to absorb the vibration. However, existing shock absorbers may experience excessive extension or retraction of the damping spring during use, which can damage the shock absorber and reduce its service life. Utility Model Content

[0004] The purpose of this invention is to solve the problem of reduced service life of shock absorbers in the prior art, and to propose a bidirectional stroke limiting shock absorber.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a bidirectional stroke limiting shock absorber, comprising a cylinder body, a piston rod mounted on the surface of the cylinder body, a limiting device provided on the surface of the piston rod, the limiting device comprising a guide block, the guide block being fixedly connected to the surface of the piston rod, a guide rod being slidably connected inside the guide block, a limiting block being fixedly connected to the top end of the guide rod, the guide block contacting the surface of the limiting block, a support block being fixedly connected to the surface of the cylinder body, the guide rod being slidably connected to the interior of the support block, a limiting rod being fixedly connected to the surface of the support block, a connecting assembly provided at the bottom end of the guide rod, the connecting assembly comprising a connecting ring, the connecting ring being fixedly connected to the bottom end of the guide rod, the connecting ring being slidably connected to the surface of the cylinder body, the connecting ring being able to cooperate with the guide rod to achieve the purpose of storing the guide rod.

[0006] Preferably, the lower surface of the support block is provided with an adjustment component, the adjustment component including an adjustment block, the adjustment block being rotatably connected to the lower surface of the support block, the adjustment block being threadedly connected to the surface of the guide rod, and the adjustment block being able to cooperate with the support block to achieve the purpose of supporting the adjustment block and adjusting the guide rod.

[0007] Preferably, the limiting rod has an internal groove, and the guide rod is slidably connected to the internal groove. The internal groove can cooperate with the limiting rod to guide the guide rod to slide.

[0008] Preferably, the surface of the guide rod is provided with a disassembly device, the disassembly device including a sleeve, the sleeve being opened at the bottom end of the guide rod, the sleeve being located inside the connecting ring, the sleeve being able to cooperate with the guide rod to achieve the purpose of storing the anti-rotation block.

[0009] Preferably, an anti-rotation block is fixedly connected to the inner side of the connecting ring, and the sleeve is fitted onto the surface of the anti-rotation block. The anti-rotation block can cooperate with the connecting ring to achieve the purpose of supporting the anti-rotation block.

[0010] Preferably, the guide rod has a receiving hole on its surface, which is located inside the connecting ring. The receiving hole can cooperate with the guide rod to receive the threaded rod.

[0011] Preferably, the inner side of the connecting ring is threaded with a threaded rod, which is inserted into the receiving hole. The threaded rod can cooperate with the connecting ring to guide the threaded rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting a limiting device, when the worker needs bidirectional protection for the shock absorber, the worker rotates the adjusting block, which adjusts one of the guide rods. The guide rod drives the connecting ring, which in turn drives the other guide rod. The guide rod rises and is guided by the support block and the built-in groove. The guide rod drives the limiting block, which moves closer to or away from the limiting rod. After the worker sets the sliding stroke of the shock absorber, when the piston rod slides down, it drives the guide block away from the limiting block. The piston rod compresses the shock-absorbing spring, and after the limiting block slides down a certain distance, it abuts against the top of the limiting rod. When the pressure on the piston rod disappears, the shock-absorbing spring pushes the piston rod back to its original position. The piston rod drives the guide block, which is guided by the guide rod. When the guide block slides to the designated position, it abuts against the lower surface of the limiting block. By setting the limiting device, bidirectional protection for the shock absorber can be effectively provided, preventing damage during use and thus improving the service life of the shock absorber.

[0013] In this invention, by setting up a disassembly device, when the worker needs to maintain the guide rod, the worker rotates the threaded rod, the threaded rod retracts and disengages from the receiving hole, the worker rotates the adjusting block, the adjusting block adjusts the guide rod to rise, the sleeve at the bottom of the guide rod disengages from the anti-rotation block, the guide rod disengages from the adjusting block, and the worker pulls out the guide rod. By setting up a disassembly device, the worker can effectively and conveniently maintain the guide rod, avoiding time-consuming situations when maintaining the guide rod, thereby improving the worker's work efficiency in maintaining the guide rod. Attached Figure Description

[0014] Figure 1A three-dimensional structural diagram of a shock absorber with bidirectional stroke limiting is provided for this utility model; Figure 2 A schematic diagram of the limiting device structure of a bidirectional stroke limiting shock absorber is provided for this utility model; Figure 3 This invention proposes a bidirectional stroke-limiting shock absorber. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 A schematic diagram of the disassembly device for a bidirectional stroke-limiting shock absorber is provided for this utility model. Figure 5 This invention proposes a bidirectional stroke-limiting shock absorber. Figure 4 Enlarged structural diagram at point B.

[0015] Legend: 1. Cylinder block; 2. Piston rod; 3. Limiting device; 31. Limiting rod; 32. Support block; 33. Limiting block; 34. Guide rod; 35. Connecting ring; 36. Guide block; 37. Internal groove; 38. Adjusting block; 4. Disassembly device; 41. Anti-rotation block; 42. Sleeve opening; 43. Storage hole; 44. Threaded rod. Detailed Implementation

[0016] Please see Figures 1-5 This utility model provides a technical solution: a bidirectional stroke limiting shock absorber, including a cylinder 1, a piston rod 2 mounted on the surface of the cylinder 1, and a limiting device 3 provided on the surface of the piston rod 2.

[0017] The following section will explain the specific design and function of the limiting device 3 and the disassembly device 4.

[0018] In this embodiment: the limiting device 3 includes a guide block 36, which is fixedly connected to the surface of the piston rod 2. A guide rod 34 is slidably connected inside the guide block 36. A limiting block 33 is fixedly connected to the top of the guide rod 34. The surfaces of the guide block 36 and the limiting block 33 are in contact. A support block 32 is fixedly connected to the surface of the cylinder 1. The guide rod 34 is slidably connected to the interior of the support block 32. A limiting rod 31 is fixedly connected to the surface of the support block 32. A connecting component is provided at the bottom of the guide rod 34.

[0019] Specifically, the connecting component includes a connecting ring 35, which is fixedly connected to the bottom end of the guide rod 34 and slidably connected to the surface of the cylinder 1. The connecting ring 35 can cooperate with the guide rod 34 to achieve the purpose of storing the guide rod 34.

[0020] Specifically, the lower surface of the support block 32 is provided with an adjustment component, which includes an adjustment block 38. The adjustment block 38 is rotatably connected to the lower surface of the support block 32, and the adjustment block 38 is threadedly connected to the surface of the guide rod 34.

[0021] In this embodiment, the adjusting block 38 can cooperate with the support block 32 to support the adjusting block 38 and adjust the guide rod 34.

[0022] Specifically, the limiting rod 31 has an internal groove 37, and the guide rod 34 is slidably connected to the internal groove 37. The internal groove 37 can cooperate with the limiting rod 31 to guide the guide rod 34 to slide.

[0023] In this embodiment: the surface of the guide rod 34 is provided with a disassembly device 4, which includes a sleeve 42. The sleeve 42 is opened on the bottom end of the guide rod 34 and is located inside the connecting ring 35. The sleeve 42 can cooperate with the guide rod 34 to achieve the purpose of storing the anti-rotation block 41.

[0024] Specifically, an anti-rotation block 41 is fixedly connected to the inner side of the connecting ring 35, and a sleeve 42 is fitted onto the surface of the anti-rotation block 41.

[0025] In this embodiment, the anti-rotation block 41 can cooperate with the connecting ring 35 to support the anti-rotation block 41.

[0026] Specifically, the guide rod 34 has a receiving hole 43 on its surface. The receiving hole 43 is located inside the connecting ring 35. The receiving hole 43 can cooperate with the guide rod 34 to achieve the purpose of receiving the threaded rod 44.

[0027] Specifically, the inner side of the connecting ring 35 is threaded with a threaded rod 44, which is inserted into the receiving hole 43.

[0028] In this embodiment, the threaded rod 44 can cooperate with the connecting ring 35 to guide the threaded rod 44.

[0029] Working principle: By setting the limiting device 3, when the worker needs bidirectional protection for the shock absorber, the worker rotates the adjusting block 38. The adjusting block 38 adjusts one of the guide rods 34, which drives the connecting ring 35. The connecting ring 35 drives the other guide rod 34. The guide rod 34 rises and is guided by the support block 32 and the built-in groove 37. The guide rod 34 drives the limiting block 33, which moves closer to or away from the limiting rod 31. After the worker sets the sliding stroke of the shock absorber, when the piston rod 2 slides down, the piston rod 2 drives the guide block 36 away from the limiting block 33. The piston rod 2 compresses the shock-absorbing spring. After the limiting block 33 slides down a certain distance, it will abut against the top of the limiting rod 31. When the pressure on the piston rod 2 disappears, the shock-absorbing spring will push the piston rod 2 to reset. The piston rod 2 drives the guide block 36, which is guided by the guide rod 34. When the guide block 36 slides down... When the guide block 36 moves to the designated position, its lower surface abuts against the limit block 33. By setting the limit device 3, the shock absorber can be effectively protected in both directions, avoiding damage during use and thus improving its service life. In addition, by setting the disassembly device 4, when the worker needs to maintain the guide rod 34, the worker rotates the threaded rod 44, which retracts and disengages from the receiving hole 43. The worker then rotates the adjusting block 38, which adjusts the guide rod 34 to rise. The sleeve 42 at the bottom of the guide rod 34 disengages from the anti-rotation block 41, and the guide rod 34 disengages from the adjusting block 38. The worker can then pull out the guide rod 34. By setting the disassembly device 4, the worker can easily maintain the guide rod 34, avoiding time-consuming maintenance and improving the worker's efficiency in maintaining the guide rod 34.

Claims

1. A bidirectional stroke-limiting shock absorber, comprising a cylinder (1), characterized in that: A piston rod (2) is mounted on the surface of the cylinder (1); The piston rod (2) is provided with a limiting device (3), the limiting device (3) includes a guide block (36), the guide block (36) is fixedly connected to the surface of the piston rod (2); The guide block (36) is internally slidably connected to a guide rod (34), and a limit block (33) is fixedly connected to the top of the guide rod (34). The guide block (36) and the limit block (33) are in contact with each other. A support block (32) is fixedly connected to the surface of the cylinder (1). The guide rod (34) and the support block (32) are internally slidably connected. A limit rod (31) is fixedly connected to the surface of the support block (32). A connecting component is provided at the bottom of the guide rod (34).

2. The shock absorber with bidirectional stroke limiting according to claim 1, characterized in that: The connecting assembly includes a connecting ring (35), which is fixedly connected to the bottom end of the guide rod (34) and slidably connected to the surface of the cylinder (1).

3. A bidirectional stroke limiting shock absorber according to claim 1, characterized in that: The lower surface of the support block (32) is provided with an adjustment component, the adjustment component includes an adjustment block (38), the adjustment block (38) is rotatably connected to the lower surface of the support block (32), and the adjustment block (38) is threadedly connected to the surface of the guide rod (34).

4. A bidirectional stroke limiting shock absorber according to claim 1, characterized in that: The limiting rod (31) has an internal groove (37) and the guide rod (34) is slidably connected to the internal groove (37).

5. A bidirectional stroke limiting shock absorber according to claim 4, characterized in that: The surface of the guide rod (34) is provided with a disassembly device (4), which includes a sleeve (42) which is opened on the bottom end of the guide rod (34) and is located inside the connecting ring (35).

6. A bidirectional stroke limiting shock absorber according to claim 5, characterized in that: An anti-rotation block (41) is fixedly connected to the inner side of the connecting ring (35), and the sleeve (42) is fitted onto the surface of the anti-rotation block (41).

7. A bidirectional travel limiting shock absorber according to claim 5, characterized in that: The guide rod (34) has a storage hole (43) on its surface, and the storage hole (43) is located inside the connecting ring (35).

8. A bidirectional travel limiting shock absorber according to claim 7, characterized in that: The inner side of the connecting ring (35) is threaded with a threaded rod (44), which is inserted into the receiving hole (43).

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