Microporous hydraulic damper

Abstract

The utility model discloses a micropore hydraulic damper which comprises an outer pipe body, an inner pipe body is connected to the inner wall of the outer pipe body in a sliding mode, a floating piston and a piston are connected to the inner wall of the inner pipe body in a sliding mode, a spring is installed at the tail end of the inner pipe body, one end of the spring is fixedly connected with the floating piston, and the initial length of the spring can be adjusted. An extension section is arranged at the tail end of an inner pipe body, an adjusting rod is arranged on a floating piston, the tail end of the adjusting rod penetrates through the inner pipe body and extends into a groove of the extension section, the adjusting rod is pulled downwards, and then the adjusting rod is limited through a limiting nut. Therefore, the initial elastic force of the spring and the initial position of the floating piston are changed, the initial damping force is achieved, and use is more flexible.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic damper technology, specifically a microporous hydraulic damper. Background Technology

[0002] A hydraulic damper is a device that uses the resistance of fluid flow to control the motion of an object. Its working principle is based on the flow of fluid within a cylinder. By adjusting the opening of damping valves or orifices, the speed and resistance of the fluid flow are controlled, thereby slowing down the object's movement. A hydraulic damper typically consists of a cylinder, piston, valves, seals, and connecting joints. The cylinder contains the fluid and generates a damping effect; the piston experiences damping as it moves within the cylinder; the valve controls the fluid flow speed and damping effect; the seals ensure no fluid leakage; and the connecting joints are used to connect to other equipment to transmit motion and force. Hydraulic dampers can be classified into two types based on the fluid flow pattern: shear-type and compression-type. In a shear-type hydraulic damper, when the device is displaced, the fluid flows through narrow gaps or orifices, generating shear force and converting it into heat energy to slow the movement. In a compression-type hydraulic damper, the fluid is compressed within the cylinder to generate reciprocating compression force, achieving shock absorption and damping. Hydraulic dampers have a wide range of applications, including engineering machinery, the automotive industry, and aerospace. In construction machinery, hydraulic dampers are used to improve the safety and stability of equipment; in the automotive industry, they are used to reduce bumps and vibrations during driving; and in aerospace, they are used in aircraft landing gear systems and as deceleration devices during spacecraft landing. Maintenance of hydraulic dampers is also crucial, including regularly checking fluid cleanliness, cleaning the damper surface, inspecting seals for damage, and adjusting valves to ensure optimal performance, thus ensuring normal operation and extending their service life.

[0003] Existing hydraulic dampers have the following shortcomings:

[0004] The size of the chamber between the floating piston and the end of the outer tube is constant, so the moving distance of the floating piston is constant, and therefore its damping force is constant and cannot be changed. Furthermore, after the piston squeezes the hydraulic oil, the floating piston is reset by the reaction force of the hydraulic oil. Therefore, the moving resistance of the floating piston is constant, which also leads to the constant damping force of the damper. As a result, the resistance of the floating piston cannot be adjusted, and the current hydraulic damper has a single performance. Utility Model Content

[0005] In view of the problems existing in a current microporous hydraulic damper, this utility model is proposed.

[0006] Therefore, the purpose of this invention is to provide a microporous hydraulic damper that solves the problems of existing hydraulic dampers, such as the constant size of the chamber between the floating piston and the end of the outer tube, resulting in a constant moving distance of the floating piston and thus a constant and unchangeable damping force; and the constant resistance of the floating piston's movement due to the reaction force of the hydraulic oil after the piston squeezes the hydraulic oil, which also leads to a constant damping force of the damper, making it impossible to adjust the resistance of the floating piston's movement. Therefore, the current hydraulic dampers have limited performance characteristics.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A microporous hydraulic damper includes an outer tube, an inner tube slidably connected to the inner wall of the outer tube, a floating piston and a piston slidably connected to the inner wall of the inner tube, a spring installed at the end of the inner tube, one end of the spring being fixedly connected to the floating piston, and the initial length of the spring being adjustable.

[0009] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the piston is fixedly connected to a piston rod, a first mounting ring is welded to the end of the piston rod, and a second mounting ring is provided at the end of the inner tube.

[0010] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the top end of the inner tube is covered with an end cap, and the piston rod is slidably connected to the inner wall of the end cap.

[0011] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the inner tube body has an integral extension section at one end away from the outer tube body, the extension section has a groove, the bottom end of the floating piston is connected to an adjusting rod, the adjusting rod passes through the inner tube body and extends into the groove, and a limit nut is threadedly connected to the adjusting rod.

[0012] In a preferred embodiment of the microporous hydraulic damper described in this utility model, a third mounting ring and a fourth mounting ring are welded to both ends of the spring, respectively. The third mounting ring and the floating piston are provided with internal threaded holes at corresponding positions, and the third mounting ring and the floating piston are fixed together by bolts. The fourth mounting ring and the inner tube are provided with internal threaded holes at corresponding positions, and the fourth mounting ring and the inner tube are fixed together by bolts.

[0013] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the tube body is provided with a through hole that connects the inner cavity at the bottom of the inner tube body and the groove, and the adjusting rod passes through the through hole.

[0014] In a preferred embodiment of the microporous hydraulic damper described in this utility model, a sealing plate is bolted to the bottom of the extension section, and a sealing gasket is provided between the sealing plate and the inner tube.

[0015] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the bottom wall of the floating piston has an integral support connecting seat, an adjusting rod is inserted into the inner wall of the support connecting seat, and the adjusting rod and the support connecting seat are fixed together by bolts.

[0016] In a preferred embodiment of the microporous hydraulic damper described in this utility model, the bottom wall of the floating piston has an integrally formed internal threaded ring, the top end of the adjusting rod has an external thread, and the adjusting rod is threadedly connected to the inner wall of the internal threaded ring.

[0017] Compared with existing technologies:

[0018] By setting an extension section at the end of the inner tube and setting an adjusting rod on the floating piston, the end of the adjusting rod passes through the inner tube and extends into the groove of the extension section. By pulling down the adjusting rod and then limiting it with a limiting nut, the initial elastic force of the spring and the initial position of the floating piston are changed, thereby realizing the magnitude of the initial damping force and making it more flexible to use. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 Provided for Embodiment 1 of this utility model Figure 1 A sectional view;

[0021] Figure 3 Provided for Embodiment 1 of this utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 Provided for Embodiment 1 of this utility model Figure 1 A sectional view;

[0023] Figure 5 Provided for Embodiment 2 of this utility model Figure 4 Enlarged view of section B in the middle.

[0024] In the diagram: outer tube 1, inner tube 2, extension section 21, first mounting ring 3, second mounting ring 4, sealing gasket 5, sealing plate 6, piston rod 7, end cap 8, piston 9, floating piston 10, third mounting ring 11, support connecting seat 12, support connecting seat 13, fourth mounting ring 14, through hole 15, limit nut 16, adjusting rod 17, spring 18, internal thread ring 22. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Example 1:

[0026] This utility model provides a microporous hydraulic damper. Please refer to [link / reference]. Figure 1-4 The system includes an outer tube 1, an inner tube 2 slidably connected to the inner wall of the outer tube 1, an end cap 8 covering the top of the inner tube 2, a piston rod 7 slidably connected to the inner wall of the end cap 8, a floating piston 10 and a piston 9 slidably connected to the inner wall of the inner tube 2, a piston rod 7 fixedly connected to the piston 9, a first mounting ring 3 welded to the end of the piston rod 7, a second mounting ring 4 at the end of the inner tube 2, and a spring 18 installed at the end of the inner tube 2. One end of the spring 18 is fixedly connected to the floating piston 10. Specifically, a third mounting ring 11 and a fourth mounting ring 14 are welded to the two ends of the spring 18, respectively. The third mounting ring 11 and the floating piston 10 are connected to the inner tube 2. Internal threaded holes are provided at corresponding positions of 0. The third mounting ring 11 and the floating piston 10 are fixed together by bolts. Internal threaded holes are provided at corresponding positions of the fourth mounting ring 14 and the inner tube 2. The fourth mounting ring 14 and the inner tube 2 are fixed together by bolts. The initial length of the spring 18 can be adjusted, and the spring 18 is in a compressed state. By adjusting the initial compressed length of the spring 18, not only can the initial position of the floating piston 10 be adjusted, but also the resistance of the spring to the floating piston 10 can be changed by using different initial compression degrees of the spring.

[0027] The inner tube 2 has an integral extension section 21 at the end away from the outer tube 1. The extension section 21 has a groove. The bottom end of the floating piston 10 is connected to an adjusting rod 17. The adjusting rod 17 passes through the inner tube 2 and extends into the groove. Specifically, the tube 2 has a through hole 15 that connects the bottom cavity of the inner tube 2 and the groove. The adjusting rod 17 passes through the through hole 15. A limit nut 16 is threaded onto the adjusting rod 17.

[0028] The bottom of the extension section 21 is provided with a sealing plate 6 connected by bolts, and a sealing gasket 5 is provided between the sealing plate 6 and the inner tube 2.

[0029] The bottom wall of the floating piston 10 has an integral support connecting seat 13, and an adjusting rod 17 is inserted into the inner wall of the support connecting seat 13. The adjusting rod 17 and the support connecting seat 13 are fixed together by bolts.

[0030] In practical use, remove the bolts between the fixed sealing plate 6 and the extension section 21, pull down the adjusting rod 17, and then rotate the limiting nut 16 to contact the inner tube 2, thereby adjusting the initial length of the spring 18, which can simultaneously change the position of the floating piston 10, thereby changing the initial damping force of the damper.

[0031] Implementation: 2:

[0032] See attached document Figure 5 Unlike Embodiment 1, the bottom wall of the floating piston 10 has an integral internal threaded ring 22, and the top of the adjusting rod 17 has an external thread. The inner wall of the internal threaded ring 22 is threaded to the adjusting rod 17, making it easier to assemble and disassemble the adjusting rod 17 and the floating piston 10.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A microporous hydraulic damper, comprising an outer tube (1), wherein an inner tube (2) is slidably connected to the inner wall of the outer tube (1), and a floating piston (10) and a piston (9) are slidably connected to the inner wall of the inner tube (2), characterized in that: A spring (18) is installed at the end of the inner tube (2), and one end of the spring (18) is fixedly connected to a floating piston (10). The initial length of the spring (18) can be adjusted.

2. The microporous hydraulic damper according to claim 1, characterized in that, The piston (9) is fixedly connected to a piston rod (7), and a first mounting ring (3) is welded to the end of the piston rod (7). The end of the inner tube (2) has a second mounting ring (4).

3. A microporous hydraulic damper according to claim 2, characterized in that, The top of the inner tube (2) is covered with an end cap (8), and the piston rod (7) is slidably connected to the inner wall of the end cap (8).

4. A microporous hydraulic damper according to claim 3, characterized in that, The inner tube (2) has an integral extension section (21) at one end away from the outer tube (1). The extension section (21) has a groove. The bottom end of the floating piston (10) is connected to an adjusting rod (17). The adjusting rod (17) passes through the inner tube (2) and extends into the groove. A limit nut (16) is threaded onto the adjusting rod (17).

5. A microporous hydraulic damper according to claim 4, characterized in that, The spring (18) has a third mounting ring (11) and a fourth mounting ring (14) welded to its two ends respectively. The third mounting ring (11) and the floating piston (10) are provided with internal threaded holes at their corresponding positions. The third mounting ring (11) and the floating piston (10) are fixed together by bolts. The fourth mounting ring (14) and the inner tube (2) are provided with internal threaded holes at their corresponding positions. The fourth mounting ring (14) and the inner tube (2) are fixed together by bolts.

6. A microporous hydraulic damper according to claim 4, characterized in that, The tube body (2) has a through hole (15) that connects the inner cavity at the bottom of the inner tube body (2) and the groove, and the adjusting rod (17) passes through the through hole (15).

7. A microporous hydraulic damper according to claim 4, characterized in that, The bottom of the extension section (21) is provided with a sealing plate (6) connected by bolts, and a sealing gasket (5) is provided between the sealing plate (6) and the inner tube (2).

8. A microporous hydraulic damper according to claim 4, characterized in that, The bottom wall of the floating piston (10) has an integral support connecting seat (13), and an adjusting rod (17) is inserted into the inner wall of the support connecting seat (13). The adjusting rod (17) and the support connecting seat (13) are fixed together by bolts.

9. A microporous hydraulic damper according to claim 4, characterized in that, The bottom wall of the floating piston (10) has an integral internal threaded ring (22), the top end of the adjusting rod (17) has an external thread, and the inner wall of the internal threaded ring (22) is threaded to the adjusting rod (17).

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