A detachable dust-proof device for hydraulic damper

Abstract

The invention discloses a detachable dustproof device for a hydraulic damper, which relates to the field of dustproof devices. Its technical solution includes a hydraulic damper, a connecting rod and a dustproof sleeve, wherein a first fixed plate is symmetrically installed on the outside of the dustproof sleeve, a plurality of telescopic rods are installed on the outside of the connecting rod, a plurality of springs are installed on the outside of the connecting rod, a telescopic plate is commonly installed on one end of the telescopic rod and the spring away from the connecting rod, a pulling plate is installed on the outside of the telescopic plate, a second fixed plate is installed on the outside of the connecting rod, the telescopic plate and the second fixed plate are slidably connected, and a plurality of first square grooves are provided on the outside of the second fixed plate. In the invention, when the dustproof sleeve needs to be disassembled, the plurality of pulling plates can be pulled at the same time first, and the plurality of telescopic plates can be driven to move in a direction close to the connecting rod by pulling the pulling plates, at which time the telescopic plates are driven to move to the outside of the second square groove, and then the operation can be repeated at the other end, so as to facilitate the quick disassembly of the dustproof sleeve when the dustproof sleeve is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of dustproof devices, and in particular to a detachable hydraulic damper dustproof device. Background Art

[0002] A hydraulic damper is a hydraulic feed speed control device that can freely adjust the cylinder feed speed from low speed to high speed within the desired range. Various dampers have long been used in the military, firearms, automobile and other industries to reduce vibration and dissipate energy. However, since hydraulic dampers are often used in outdoor mechanical equipment, they often encounter dust during use. When a lot of dust is adsorbed on the hydraulic damper, it is easy to affect its use. Therefore, a dustproof device is used to prevent dust, which is generally a rubber dust cover.

[0003] The dust cover of the existing hydraulic damper is generally fixed to the hydraulic damper by welding or locked together by wire. When the hydraulic damper is maintained, it is difficult to remove the dust cover, and the dust cover is generally cut off directly. Moreover, after long-term use, the dust cover that is welded or locked with wire is prone to gaps at the connection between the hydraulic damper and the dust cover, which affects the sealing effect and reduces the dustproof effect. Therefore, a detachable hydraulic damper dustproof device is needed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that it is difficult to remove the dust cover and gaps are easily generated at the connection between the hydraulic damper and the dust cover after long-term use, thus affecting the sealing effect, and to propose a detachable hydraulic damper dustproof device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A detachable dustproof device for a hydraulic damper comprises a hydraulic damper, a connecting rod and a dustproof cover, a first fixing plate is symmetrically mounted on the outside of the dustproof cover, a plurality of telescopic rods are mounted on the outside of the connecting rod, a plurality of springs are mounted on the outside of the connecting rod, a telescopic plate is mounted together with one end of the telescopic rod and the spring away from the connecting rod, a pulling plate is mounted on the outside of the telescopic plate, a second fixing plate is mounted on the outside of the connecting rod, the telescopic plate is slidably connected to the second fixing plate, and a plurality of first square grooves are opened on the outside of the second fixing plate;

[0007] The first fixed plate is provided with a plurality of second square grooves on the outside, the pulling plate is symmetrically and slidably connected with a movable plate on the outside, an extrusion plate is installed on the outside of the movable plate, and an arc plate is installed on the outside of the movable plate, and the internal thread of the arc plate is connected with a two-way threaded rod, and a bearing rod is installed on the outside of the telescopic plate, and the two-way threaded rod is fixedly connected to the inner ring of the bearing rod, and a rotating handle is installed on the outside of the two-way threaded rod, and a sealing assembly for the dust cover is arranged on the outside of the connecting rod. When the dust cover needs to be disassembled, first, multiple pulling plates can be pulled at the same time, and the multiple telescopic plates can be moved in the direction close to the connecting rod by pulling the pulling plates. At this time, the telescopic plate is driven to move to the outside of the second square groove, and then the operation can be repeated at the other end, so as to facilitate the quick disassembly of the dust cover when the dust cover is not needed. The sealing assembly includes a first threaded ring installed on the outside of the connecting rod and a third threaded ring installed on the outside of the first fixed plate. The first threaded ring is threadedly connected to a second threaded ring on the outside, and the third threaded ring is threadedly connected to a fourth threaded ring on the outside. A circular plate is installed on the outside of the second threaded ring and the fourth threaded ring. By setting the sealing assembly, the second threaded ring and the fourth threaded ring are driven to be fixed to the outside of the first threaded ring and the third threaded ring by rotating the circular plate through the force of the threaded connection. The operation is repeated to thread the second threaded ring and the fourth threaded ring at both ends to the outside of the first threaded ring and the third threaded ring, so as to strengthen the sealing between the first fixed plate and the connecting rod and avoid the weakening of the sealing at the connection between the hand hydraulic damper and the first fixed plate due to long-term use, which causes dust to enter and affects the use of the hydraulic damper.

[0008] The above technical solution further includes:

[0009] The second fixed plate is provided with a plurality of sliding grooves on the outside, and a sliding block is slidably connected inside the sliding groove. The sliding block is fixedly connected to the telescopic plate, and the size of the sliding groove opening is adapted to the size of the sliding block, so that the telescopic plate can slide more smoothly when the telescopic plate is pulled.

[0010] A square plate is symmetrically mounted on the outside of the telescopic plate, and the square plate is slidably connected to the movable plate.

[0011] The opening sizes of the first square groove and the second square groove are equal.

[0012] The number of the telescopic plates is multiple and evenly distributed around the circumference, and the first fixing plate is fixed more stably by snapping the telescopic plates into the first square grooves.

[0013] The number of the telescopic rods is multiple groups and evenly distributed around the circumference, and the number of the springs is multiple groups and evenly distributed around the circumference.

[0014] The extrusion plate is made of rubber material. When the dust cover is fixed inside the second square groove by the telescopic plate, when the extrusion plate is moved away from each other by turning the rotating handle, the telescopic plate is connected more tightly to the inner walls of the first square groove and the second square groove through the rubber extrusion plate, thereby preventing the hydraulic damper and the dust cover from loosening after long-term telescopic action.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, when the dust cover needs to be disassembled, multiple pulling plates can be pulled at the same time. By pulling the pulling plates, multiple telescopic plates are driven to move toward the direction close to the connecting rod. At this time, the telescopic plates are driven to move to the outside of the second square groove, and then the operation can be repeated at the other end. This facilitates the quick disassembly of the dust cover when it is not needed, without cutting, which is simple and quick.

[0017] 2. In the present invention, by arranging a bidirectional threaded rod, when the dust cover is fixed inside the second square groove by the telescopic plate, the extrusion plate can be driven to move away from each other by rotating the rotating handle, and the inner walls of the first square groove and the second square groove are squeezed by the extrusion plate made of rubber material, so that the connection is tighter when the telescopic plate is fixed inside the second square groove by the extrusion plate, thereby avoiding the loosening of the hydraulic damper and the dust cover after long-term telescopic action, thereby increasing the practicality of the device.

[0018] 3. In the present invention, a sealing assembly is provided at the same time, and the second threaded ring and the fourth threaded ring are driven by the rotating circular plate to be fixed on the outside of the first threaded ring and the third threaded ring through the force of the threaded connection. The operation is repeated to thread the second threaded ring and the fourth threaded ring at both ends to the outside of the first threaded ring and the third threaded ring, so as to strengthen the sealing between the first fixed plate and the connecting rod, and avoid the weakening of the sealing at the connection between the hand hydraulic damper and the first fixed plate due to long-term use, which leads to the entry of dust and affects the use of the hydraulic damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a first three-dimensional structure of a detachable hydraulic damper dust prevention device proposed by the present invention;

[0020] Figure 2 A second three-dimensional structural schematic diagram of a detachable hydraulic damper dust prevention device proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of a detachable hydraulic damper dust prevention device proposed by the present invention;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 6 for Figure 2 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 7 for Figure 2 Enlarged schematic diagram of the structure at point D in the middle.

[0026] In the figure: 1. hydraulic damper; 2. connecting rod; 3. dust cover; 4. first fixed plate; 5. telescopic rod; 6. spring; 7. telescopic plate; 8. pulling plate; 9. sliding groove; 10. sliding block; 11. first square groove; 12. second square groove; 13. second fixed plate; 14. square plate; 15. movable plate; 16. extrusion plate; 17. arc plate; 18. bidirectional threaded rod; 19. bearing rod; 20. turning handle; 21. first threaded ring; 22. second threaded ring; 23. round plate; 24. third threaded ring; 25. fourth threaded ring. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] like Figure 1-7 As shown, a detachable dust-proof device for a hydraulic damper proposed by the present invention comprises a hydraulic damper 1, a connecting rod 2 and a dust cover 3, a first fixing plate 4 is symmetrically installed on the outside of the dust cover 3, a plurality of telescopic rods 5 are installed on the outside of the connecting rod 2, a plurality of springs 6 are installed on the outside of the connecting rod 2, a telescopic plate 7 is installed together with the ends of the telescopic rods 5 and the springs 6 away from the connecting rod 2, a pulling plate 8 is installed on the outside of the telescopic plate 7, a second fixing plate 13 is installed on the outside of the connecting rod 2, the telescopic plate 7 is slidably connected to the second fixing plate 13, and the outside of the second fixing plate 13 is provided with a There are multiple first square grooves 11, multiple second square grooves 12 are opened on the outside of the first fixed plate 4, and multiple sliding grooves 9 are opened on the outside of the second fixed plate 13. The sliding groove 9 is slidably connected with a sliding block 10. The sliding block 10 is fixedly connected to the telescopic plate 7. The size of the opening of the sliding groove 9 is adapted to the size of the sliding block 10. The size of the opening of the first square groove 11 is equal to that of the second square groove 12. The number of telescopic plates 7 is multiple groups and is evenly distributed around the circumference. The number of telescopic rods 5 is multiple groups and is evenly distributed around the circumference. The number of springs 6 is multiple groups and is evenly distributed around the circumference.

[0030] The working principle of a detachable dustproof device for a hydraulic damper based on the first embodiment is that when the dust cover 3 needs to be removed for maintenance of the hydraulic damper, the multiple pulling plates 8 can be pulled at the same time, and the multiple telescopic plates 7 are driven to move in the direction close to the connecting rod 2 by pulling the pulling plates 8. At this time, the telescopic plates 7 are driven to move along the sliding groove 9 through the sliding block 10 to the outside of the second square groove 12, so that the telescopic plates 7 are no longer fixed in the second square groove 12. At this time, the first fixed plate 4 is disengaged from the second fixed plate 13, and then the telescopic plate 7 at the other end can be repeated. When the telescopic plates 7 at both ends are all moved to the second square groove When the outside of 12 is reached, the first fixing plate 4 and the second fixing plate 13 at both ends are in a disengaged state, and the dust cover 3 can be removed at this time. When the dust cover 3 needs to be reinstalled, the sliding pulling plate 8 can continue to drive the multiple telescopic plates 7 to move in the direction close to the connecting rod 2. At this time, the telescopic rod 5 and the spring 6 will shrink. When the second square groove 12 is aligned with the telescopic plate 7, the pulling plate 8 can be released, and the telescopic rod 5 and the spring 6 will be reset, and the telescopic plate 7 can be driven to move to the inside of the second square groove 12 for fixation. It is simple and quick, so that the dust cover 3 can be quickly disassembled when it is not needed, and there is no need to cut the dust cover 3.

[0031] Embodiment 2

[0032] like Figure 4-5 As shown, based on the first embodiment, the outside of the pulling plate 8 is symmetrically slidably connected with a movable plate 15, the outside of the movable plate 15 is installed with an extrusion plate 16, the outside of the movable plate 15 is installed with an arc plate 17, the internal thread of the arc plate 17 is connected with a bidirectional threaded rod 18, the outside of the telescopic plate 7 is installed with a bearing rod 19, the bidirectional threaded rod 18 is fixedly connected to the inner ring of the bearing rod 19, the outside of the bidirectional threaded rod 18 is installed with a rotating handle 20, the outside of the telescopic plate 7 is symmetrically installed with a square plate 14, the square plate 14 and the movable plate 15 are slidably connected, and the extrusion plate 16 is made of rubber.

[0033] In this embodiment, when the hydraulic damper 1 needs to be dustproofed by the dust cover 3, the telescopic plate 7 is inserted into the second square groove 12 to fix the first fixed plate 4 and the dust cover 3. At this time, the handle 20 can be rotated. When the handle 20 is rotated, the bidirectional threaded rod 18 is driven to rotate in a circle through the support of the bearing rod. Since the arc plates 17 installed outside the two movable plates 15 are threadedly connected to the bidirectional threaded rod 18, the threaded connection force generated by rotating the bidirectional threaded rod 18 drives the arc plate 17 to move away from the opposite side. The movable plate 15 moves in the direction of the first square groove 11 and the second square groove 12, and the two extrusion plates 16 move away from each other at the same time, so that the two extrusion plates 16 are tightly attached to the inner walls of the first square groove 11 and the second square groove 12. The inner walls of the first square groove 11 and the second square groove 12 are squeezed by the extrusion plates 16 made of rubber material, so that the telescopic plate 7 is more tightly connected with the first square groove 11 and the second square groove 12 when it is stuck inside the first square groove 11 and the second square groove 12, so as to avoid the hydraulic damper 1 and the dust cover 3 from loosening after long-term telescopic action, thereby increasing the practicality of the device.

[0034] Embodiment 3

[0035] like Figure 6-7 As shown, based on the above-mentioned embodiment one or two, a sealing assembly for a dust cover 3 is provided on the outside of the connecting rod 2, and the sealing assembly includes a first threaded ring 21 installed on the outside of the connecting rod 2, a third threaded ring 24 installed on the outside of the first fixed plate 4, the external thread of the first threaded ring 21 is connected to the second threaded ring 22, the external thread of the third threaded ring 24 is connected to the fourth threaded ring 25, and a circular plate 23 is installed on the outside of the second threaded ring 22 and the fourth threaded ring 25.

[0036] In this embodiment, when the dust cover 3 is used, since the first threaded ring 21 is threadedly connected to the second threaded ring 22, and the third threaded ring 24 is threadedly connected to the fourth threaded ring 25, the second threaded ring 22 and the fourth threaded ring 25 can be driven by rotating the circular plate 23 to be fixed to the outside of the first threaded ring 21 and the third threaded ring 24 through the force of the threaded connection. The operation is repeated to thread the second threaded ring 22 and the fourth threaded ring 25 at both ends to the outside of the first threaded ring 21 and the third threaded ring 24, so as to strengthen the sealing between the first fixed plate 4 and the connecting rod 2, and avoid the weakening of the sealing at the connection between the hand hydraulic damper 1 and the first fixed plate 4 due to long-term use, which causes dust to enter and affects the use of the hydraulic damper 1.

[0037] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detachable dustproof device for a hydraulic damper, comprising a hydraulic damper (1), a connecting rod (2) and a dustproof sleeve (3), characterized in that: A first fixing plate (4) is symmetrically mounted on the outside of the dust cover (3); a plurality of telescopic rods (5) are mounted on the outside of the connecting rod (2); a plurality of springs (6) are mounted on the outside of the connecting rod (2); a telescopic plate (7) is mounted on one end of the telescopic rod (5) and the spring (6) away from the connecting rod (2); a pulling plate (8) is mounted on the outside of the telescopic plate (7); a second fixing plate (13) is mounted on the outside of the connecting rod (2); the telescopic plate (7) is slidably connected to the second fixing plate (13); and a plurality of first square grooves (11) are formed on the outside of the second fixing plate (13); The first fixed plate (4) is provided with a plurality of second square grooves (12) on the outside, the pulling plate (8) is symmetrically slidably connected to a movable plate (15) on the outside, an extrusion plate (16) is installed on the outside of the movable plate (15), an arc plate (17) is installed on the outside of each movable plate (15), the inner thread of the arc plate (17) is connected to a bidirectional threaded rod (18), a bearing rod (19) is installed on the outside of the telescopic plate (7), the bidirectional threaded rod (18) is fixedly connected to the inner ring of the bearing rod (19), and the outer surface of the bidirectional threaded rod (18) is connected to the inner ring of the bearing rod (19). A rotating handle (20) is installed, and a sealing assembly for the dust cover (3) is arranged on the outside of the connecting rod (2), and the sealing assembly includes a first threaded ring (21) installed on the outside of the connecting rod (2), and a third threaded ring (24) installed on the outside of the first fixing plate (4), the first threaded ring (21) is threadedly connected to a second threaded ring (22), the third threaded ring (24) is threadedly connected to a fourth threaded ring (25), and a circular plate (23) is installed on the outside of the second threaded ring (22) and the fourth threaded ring (25).

2. A detachable dust-proof device for a hydraulic damper according to claim 1, characterized in that: The second fixed plate (13) is provided with a plurality of sliding grooves (9) on the outside, and a sliding block (10) is slidably connected inside the sliding groove (9). The sliding block (10) is fixedly connected to the telescopic plate (7), and the size of the opening of the sliding groove (9) is adapted to the size of the sliding block (10).

3. A detachable dust-proof device for a hydraulic damper according to claim 1, characterized in that: A square plate (14) is symmetrically mounted on the outside of the telescopic plate (7), and the square plate (14) is slidably connected to the movable plate (15).

4. A detachable dust-proof device for a hydraulic damper according to claim 1, characterized in that: The opening sizes of the first square groove (11) and the second square groove (12) are equal.

5. A detachable dust-proof device for a hydraulic damper according to claim 4, characterized in that: The telescopic plates (7) are provided in multiple groups and are evenly distributed around the circumference.

6. A detachable dust-proof device for a hydraulic damper according to claim 1, characterized in that: The telescopic rods (5) are provided in multiple groups and are evenly distributed around the circumference, and the springs (6) are provided in multiple groups and are evenly distributed around the circumference.

7. A detachable dust-proof device for a hydraulic damper according to claim 1, characterized in that: The extrusion plate (16) is made of rubber.

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