Damping device for protecting structural stability

Abstract

The utility model discloses a damping device for protecting the structure stability, which comprises an oil storage cylinder barrel, a piston rod, a damping piston, a sleeve, a damping spring and an isolation piston, and is characterized in that the damping spring is added on the basis of a single-cylinder shock absorber, so that the shock resistance of the single-cylinder shock absorber is effectively improved; the damping spring is arranged, the stiffness coefficient of the damping spring is adjusted through the sleeve, then the supporting strength and the damping strength of the damping spring are changed, the application occasion of the damping spring is wider, in addition, the sleeve is spirally connected with the oil storage cylinder barrel through the spiral groove and the threaded strip, and the displacement precision of the sleeve relative to the oil storage cylinder barrel is higher; in addition, the threaded strip and the spiral groove can further provide supporting force for the sleeve, namely the damping spring after the position of the sleeve is adjusted in a rotating mode, the situation that the sleeve deviates is effectively prevented, and the safety of the damping spring is improved.

Description

Technical Field

[0001] This utility model relates to the field of shock absorption mechanism technology, specifically a shock absorption device for protecting structural stability. Background Technology

[0002] Shock absorbers are devices or systems used to reduce or eliminate the effects of vibration and impact. They are widely used in vehicles, industrial equipment, building structures, and sporting goods. Among them, shock absorbers in automobile suspension systems are crucial for improving ride comfort and vehicle handling stability.

[0003] Currently, automotive shock absorbers are mainly monotube air-filled shock absorbers, which are characterized by fast response and strong thermal management capabilities and are often used in high-performance vehicles. However, although existing monotube air-filled shock absorbers can withstand certain impacts and loads, they are prone to deformation when subjected to impacts, which affects their shock absorption effect and vehicle safety. Furthermore, the effective operating range of monotube air-filled shock absorbers is usually short, which limits their flexibility. Their support force and damping force are not adjustable, which limits their application scenarios.

[0004] Therefore, it is necessary to provide a shock-absorbing device for protecting structural stability in order to solve the problems mentioned in the background art. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing device for protecting structural stability, comprising an oil reservoir cylinder, a piston rod, a damping piston, a sleeve, a shock-absorbing spring, and an isolation piston. The oil reservoir cylinder has an internal cavity, in which the damping piston and the isolation piston are slidably disposed. The damping piston and the isolation piston isolate the cavity and form an oil reservoir, a working chamber, and an air chamber. The piston rod is slidably disposed on the oil reservoir cylinder and fixedly connected to the damping piston. A sleeve is slidably disposed on the outer side of the oil reservoir cylinder, and a push ring is rotatably disposed on the sleeve. A top ring is fixedly disposed on the top of the piston rod, and a shock-absorbing spring is fixedly disposed between the top ring and the push ring.

[0006] Furthermore, as a preferred embodiment, threaded strips are symmetrically fixed on the upper and lower sides of the oil storage cylinder, and a spiral hydraulic cavity is formed in the threaded strip on the lower side, the spiral hydraulic cavity being connected to an external hydraulic drive mechanism;

[0007] The sleeve has a spiral groove, and a support block is fixedly installed in the middle of the spiral groove. A spiral hydraulic rod is fixedly installed on the support block. The spiral groove is spirally connected to the threaded strip, and the spiral hydraulic rod slides along the spiral hydraulic cavity in a sealed manner.

[0008] Furthermore, as a preferred embodiment, a connecting block is fixedly provided at the top of the piston rod and at the bottom of the oil reservoir.

[0009] Furthermore, as a preferred embodiment, the oil storage chamber and the working chamber are filled with oil, and the damping piston has two flow holes that connect the oil storage chamber and the working chamber. The two flow holes are respectively provided with an oil inlet valve and an overflow valve.

[0010] Furthermore, preferably, the length of the oil reservoir cylinder is greater than the length of the sleeve, and the distance between the two threaded strips is less than the length difference between the oil reservoir cylinder and the sleeve.

[0011] Furthermore, as a preferred embodiment, a guide sleeve for guiding the piston rod is fixedly provided at the top of the oil reservoir cylinder.

[0012] Furthermore, as a preferred embodiment, an oil seal is provided between the piston rod and the oil reservoir cylinder.

[0013] Furthermore, preferably, the gas chamber is filled with high-pressure gas.

[0014] Compared with the prior art, this utility model provides a shock-absorbing device for protecting structural stability, which has the following beneficial effects:

[0015] In this invention, a damping spring is added to the monotube shock absorber, which effectively improves the shock resistance of the monotube shock absorber. A sleeve is set to adjust the stiffness coefficient of the damping spring, thereby changing its support strength and damping force, making its application wider. In addition, the sleeve and the oil reservoir are connected by a spiral groove and a threaded strip, which makes the displacement accuracy of the sleeve relative to the oil reservoir higher, and thus makes the adjustment accuracy of the damping spring stiffness coefficient by the sleeve higher. Furthermore, after the position of the sleeve is adjusted by rotation, the threaded strip and the spiral groove can further provide support force to the sleeve, i.e., the damping spring, effectively preventing the sleeve from shifting and improving its safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the oil storage cylinder in this utility model;

[0019] Figure 4 This is a schematic diagram of the piston rod and damping piston in this utility model;

[0020] Figure 5 This is a schematic diagram of the sleeve structure in this utility model;

[0021] In the diagram: 1. Oil reservoir cylinder; 11. Oil reservoir chamber; 12. Working chamber; 13. Air chamber; 14. Threaded strip; 15. Helical hydraulic chamber; 16. Guide sleeve; 2. Piston rod; 21. Top ring; 3. Damping piston; 31. Flow hole; 4. Sleeve; 41. Push ring; 42. Helical groove; 43. Helical hydraulic rod; 5. Shock-absorbing spring; 6. Isolation piston; 7. Connecting block. Detailed Implementation

[0022] Please see Figures 1-5 In this embodiment of the present invention, a shock-absorbing device for protecting structural stability includes an oil reservoir cylinder 1, a piston rod 2, a damping piston 3, a sleeve 4, a shock-absorbing spring 5, and an isolation piston 6. The oil reservoir cylinder 1 has an internal cavity, in which the damping piston 3 and the isolation piston 6 are slidably disposed. The damping piston 3 and the isolation piston 6 isolate the cavity and form an oil reservoir 11, a working chamber 12, and an air chamber 13. The piston rod 2 is slidably disposed on the oil reservoir cylinder 1 and fixedly connected to the damping piston 3. A sleeve 4 is slidably disposed on the outer side of the oil reservoir cylinder 1, and a push ring 41 is rotatably disposed on the sleeve 4. A top ring 21 is fixedly disposed on the top of the piston rod 2, and a shock-absorbing spring 5 is fixedly disposed between the top ring 21 and the push ring 41.

[0023] The oil storage cylinder 1 is symmetrically fixed with threaded bars 14 on the upper and lower sides, and a spiral hydraulic cavity 15 is opened in the threaded bar 14 on the lower side. The spiral hydraulic cavity 15 is connected to an external hydraulic drive mechanism.

[0024] The sleeve 4 is provided with a spiral groove 42, and a support block is fixedly provided in the middle part of the spiral groove 42. A spiral hydraulic rod 43 is fixedly provided on the support block. The spiral groove 42 is spirally connected to the threaded strip 14, and the spiral hydraulic rod 43 slides along the spiral hydraulic cavity 15 in a sealed manner.

[0025] A connecting block 7 is fixedly provided at the top of the piston rod 2 and at the bottom of the oil reservoir cylinder 1. The connecting block 7 on the piston rod 2 is connected to the vehicle body, and the connecting block 7 on the oil reservoir cylinder 1 is connected to the wheel.

[0026] The oil storage chamber 11 and the working chamber 12 are filled with oil. The damping piston 3 has two flow holes 31, which connect the oil storage chamber 11 and the working chamber 12. An oil inlet valve and an overflow valve are respectively provided in the two flow holes 31.

[0027] During implementation, when the wheel is impacted, the oil reservoir cylinder 1 moves upward, compressing the oil in the working chamber. At this time, the damping piston 3 moves downward relative to the oil reservoir cylinder 1. A pressure difference exists between the oil reservoir 11 and the working chamber 12, causing the oil to push open the overflow valve, allowing the oil in the working chamber 12 to flow into the oil reservoir 11. Simultaneously, the high-pressure gas in the air chamber 13 is compressed, increasing energy reserves for the rebound phase. At the same time, the upward movement of the oil reservoir cylinder 1 further drives the sleeve 4 upward, compressing the shock absorber spring 5, thus greatly reducing the impact on the vehicle body. Furthermore, when the impact is too large, the shock absorber spring 5 can further disperse the impact force, ensuring that the piston rod 2 and the oil reservoir cylinder 1 are not damaged. Subsequently, after the wheel leaves the impact point, the oil reservoir cylinder 1 moves downward, and the damping piston 3 moves upward relative to the oil reservoir cylinder 1, compressing the oil in the oil reservoir 11. At this time, the oil pushes open the inlet valve and enters the working chamber 12 from the oil reservoir 11. When compressed gas releases elastic potential energy, the oil reservoir cylinder 1 and damping piston 3 quickly reset, and the shock absorber spring 5 also resets. When encountering bumpy road sections, the impact force on the shock absorber itself increases. At this time, hydraulic pressure is injected into the spiral hydraulic chamber 15 through the hydraulic drive mechanism, causing the spiral hydraulic rod 43 to slide along the spiral hydraulic chamber 15. At the same time, the sleeve 4 is driven to rotate and slide along the oil reservoir cylinder 1, which changes the stiffness coefficient of the shock absorber spring 5, thereby changing the damping force of the shock absorber spring 5 and improving the shock absorber's impact resistance. After the sleeve 4 is rotated to adjust its position, the threaded bar 14 and the spiral groove 42 can be further tightened and provide stable support force to the push ring 41, i.e., the shock absorber spring 5, thus ensuring that the shock absorber spring 5 has good damping performance and effectively protecting the piston rod 2, damping piston 3, and oil reservoir cylinder 1 from damage. This effectively improves the flexibility of the shock absorber and expands its application range.

[0028] In this embodiment, the length of the oil storage cylinder 1 is greater than the length of the sleeve 4, and the distance between the two threaded strips 14 is less than the length difference between the oil storage cylinder 1 and the sleeve 4.

[0029] In other words, no matter how the sleeve 4 slides, the spiral groove 42 can always be spirally connected to the two threaded bars 14, so that the sleeve 4, i.e. the push ring 41, can always provide stable support force to the shock-absorbing spring 5.

[0030] In this embodiment, as Figure 2 The top of the oil storage cylinder 1 is fixedly provided with a guide sleeve 16 for guiding the piston rod 2.

[0031] In this embodiment, an oil seal is provided between the piston rod 2 and the oil reservoir cylinder 1;

[0032] The gas chamber 13 is filled with high-pressure gas.

[0033] In summary, this invention adds a damping spring 5 to the monotube shock absorber, effectively improving the shock resistance of the monotube shock absorber. The sleeve 4 is used to adjust the stiffness coefficient of the damping spring 5, thereby changing its support strength and damping force, making its application more widespread. Furthermore, the sleeve 4 and the oil reservoir cylinder 1 are spirally connected to the threaded strip 14 via a spiral groove 42, resulting in higher displacement accuracy of the sleeve 4 relative to the oil reservoir cylinder 1. This further improves the adjustment accuracy of the damping spring stiffness coefficient by the sleeve 4. Additionally, after rotating and adjusting the position of the sleeve 4, the threaded strip 14 and the spiral groove 42 can further provide support to the sleeve 4 (i.e., the damping spring 5), effectively preventing the sleeve 4 from shifting and improving its safety.

[0034] The above description is only a preferred 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 technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration damping device for protecting structural stability, characterized in that: The system includes an oil reservoir cylinder (1), a piston rod (2), a damping piston (3), a sleeve (4), a shock-absorbing spring (5), and an isolation piston (6). The oil reservoir cylinder (1) has a cavity inside, in which the damping piston (3) and the isolation piston (6) are slidably arranged. The damping piston (3) and the isolation piston (6) isolate the cavity and form an oil reservoir (11), a working chamber (12), and an air chamber (13). The piston rod (2) is slidably arranged on the oil reservoir cylinder (1) and fixedly connected to the damping piston (3). The sleeve (4) is slidably arranged on the outside of the oil reservoir cylinder (1). A push ring (41) is rotatably arranged on the sleeve (4). A top ring (21) is fixedly arranged on the top of the piston rod (2). A shock-absorbing spring (5) is fixedly arranged between the top ring (21) and the push ring (41).

2. The shock absorption device for protecting structural stability according to claim 1, characterized in that: The oil storage cylinder (1) is symmetrically fixed with threaded strips (14) on both the upper and lower sides, and a spiral hydraulic cavity (15) is opened in the threaded strip (14) on the lower side. The spiral hydraulic cavity (15) is connected to an external hydraulic drive mechanism. The sleeve (4) is provided with a spiral groove (42), and a support block is fixedly provided in the middle part of the spiral groove (42). A spiral hydraulic rod (43) is fixedly provided on the support block. The spiral groove (42) is spirally connected to the threaded bar (14), and the spiral hydraulic rod (43) slides along the spiral hydraulic cavity (15) in a sealed manner.

3. A vibration damping device for protecting structural stability according to claim 1, characterized in that: The piston rod (2) and the oil reservoir cylinder (1) are both fixedly provided with connecting blocks (7).

4. A vibration damping device for protecting structural stability according to claim 1, characterized in that: The oil storage chamber (11) and the working chamber (12) are filled with oil. The damping piston (3) has two flow holes (31) that connect the oil storage chamber (11) and the working chamber (12). The two flow holes (31) are respectively equipped with an oil inlet valve and an overflow valve.

5. A vibration damping device for protecting structural stability according to claim 2, characterized in that: The length of the oil storage cylinder (1) is greater than the length of the sleeve (4), and the distance between the two threaded strips (14) is less than the length difference between the oil storage cylinder (1) and the sleeve (4).

6. A vibration damping device for protecting structural stability according to claim 1, characterized in that: The top of the oil storage cylinder (1) is fixedly provided with a guide sleeve (16) for guiding the piston rod (2).

7. A vibration damping device for protecting structural stability according to claim 1, characterized in that: An oil seal is provided between the piston rod (2) and the oil reservoir cylinder (1).

8. A vibration damping device for protecting structural stability according to claim 1, characterized in that: The gas chamber (13) is filled with high-pressure gas.

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