Double-spring shock absorber

Abstract

The utility model discloses a double-spring shock absorber, relates to the technical field of shock absorbers, solves the problems that an existing device is poor in using effect and inconvenient to mount and dismount, and adopts the following scheme that a piston located in a piston cylinder is fixedly mounted at the bottom end of a piston rod. Through the arrangement of a first damping spring and a second damping spring, when a connecting plate A is extruded, the first damping spring and a piston rod move downwards for damping, and only when the extrusion force exceeds a critical point, the second damping spring deforms, so that the up-down floating distance of the device is reduced, and the using effect is improved; meanwhile, through the arrangement of a mounting ring and a threaded rod, the outer wall of the piston rod is sleeved with the mounting ring and a first damping spring, then a fixing block A is connected with the piston rod through the threaded rod and a threaded hole, finally, the mounting ring is fixedly connected with the piston cylinder and the fixing block A through a locking bolt, mounting and dismounting are easy and convenient, and later maintenance is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, specifically a double-spring vibration damper. Background Technology

[0002] Shock absorbers are used to suppress the oscillations when springs absorb shock and the impact from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the chassis and body, thereby improving the ride comfort of the vehicle. Spring shock absorbers are one type of shock absorber.

[0003] A search revealed that patent application CN212272918U discloses a dual-spring vibration damper, including a piston cylinder. A piston rod is slidably inserted into the piston cylinder. One end of the piston rod passes through the inner top of the piston cylinder and extends upward. An upper fixing block is fixedly connected to the extended end of the piston rod. A piston is fixedly connected to the end of the piston rod located inside the piston cylinder. A first spring is sleeved on the piston rod. The two ends of the first spring are fixedly connected to the piston cylinder and the upper fixing block, respectively. In this way, the vibration damping effect of the device can be improved by using three sets of springs.

[0004] However, due to the setting of the first and second springs, and the fact that the coefficients of the first and second springs are the same, the compression of the first spring will also drive the compression of the second spring, resulting in a large downward movement of the piston rod and piston cylinder. During use, the overall vertical fluctuation is large, the use effect is poor, and the comfort of use is low. At the same time, since the first spring is fixedly installed on the piston cylinder and the fixed block, it is inconvenient to install and disassemble, and it is inconvenient to maintain it.

[0005] Therefore, we propose a dual-spring damper. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a dual-spring vibration damper, which solves the problems of poor performance and inconvenient installation and disassembly of existing devices.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a double-spring shock absorber, including a piston cylinder, wherein a piston rod of compatible specifications is slidably connected to the top surface of the piston cylinder;

[0008] A piston is fixedly installed at the bottom end of the piston rod, inside the piston cylinder, which is filled with oil. A fixing block A is installed at the top end of the piston rod, and a connecting plate A is fixedly installed on the top surface of the fixing block A. A first damping spring of the same specification is installed on the outer wall of the piston rod. A telescopic rod is fixedly installed on the bottom surface of the piston cylinder, and a fixing block B is fixedly installed at the bottom end of the telescopic rod. A connecting plate B is fixedly installed on the bottom surface of the fixing block B. A second damping spring of the same specification is installed on the outer wall of the telescopic rod, and the coefficient of the second damping spring is larger than that of the first damping spring.

[0009] The first shock absorber spring has mounting rings of matching specifications fixedly installed on its upper and lower sides respectively. The top surface of the mounting ring has four sets of through mounting holes. The top surface of the piston cylinder has four sets of positioning holes A that are opposite to the mounting holes. The bottom surface of the fixing block A has four sets of positioning holes B that are opposite to the mounting holes. The top end of the piston rod is fixedly installed with a threaded rod. The bottom surface of the fixing block A has threaded holes of matching specifications.

[0010] Preferably, the top surface of the connecting plate A has four sets of connecting holes A in opposite positions, and the top surface of the connecting plate B has four sets of connecting holes B in opposite positions, which facilitates the connection of the device with other components.

[0011] Preferably, the top surface of the connecting plate A is provided with a hexagonal hole, so that the fixing block A can be connected to the threaded rod with a hexagonal wrench.

[0012] Preferably, a pressure relief valve is fixedly installed on the outer wall of the piston cylinder, and a pressure sensor is installed on the pressure relief valve. In this way, when the pressure exerted by the piston on the oil exceeds the threshold, the pressure relief valve will automatically release pressure, thereby improving the safety of the device.

[0013] Preferably, an oil reservoir is fixedly installed on the outside of the pressure relief valve, and a matching reset valve is installed on the right side of the oil reservoir. In this way, the pressure-relieved oil can be stored in the oil reservoir. When the piston resets, the reset valve automatically resets and drives the oil back into the piston cylinder.

[0014] Preferably, a rubber pad is fitted between the mounting ring, the piston cylinder, and the fixed block A, which can improve the stability of the installation of the first damping spring and also improve the damping effect.

[0015] 1. This dual-spring vibration damper, through the setting of a first damping spring and a second damping spring, when the connecting plate A is squeezed, the first damping spring and the piston rod move downward to dampen the vibration. Since the coefficient of the second damping spring is greater than that of the first damping spring, the second damping spring will deform only when the squeezing force exceeds the critical point, thereby reducing the vertical floating distance of the device and improving the performance.

[0016] 2. Simultaneously, by setting the mounting ring and threaded rod, the mounting ring and the first shock-absorbing spring are fitted onto the outer wall of the piston rod. Then, the fixing block A is connected to the piston rod through the threaded rod and threaded hole. Finally, the mounting ring is connected and fixed to the piston cylinder and the fixing block A respectively by the locking bolt. The installation and disassembly are simple and convenient, which facilitates later maintenance and reduces maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first shock-absorbing spring of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixing block A of this utility model;

[0020] Figure 4 This is a schematic diagram of the piston cylinder of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the second shock-absorbing spring of this utility model.

[0022] In the diagram: 1. Piston cylinder; 2. Piston rod; 3. Fixed block A; 4. Connecting plate A; 5. First damping spring; 6. Telescopic rod; 7. Fixed block B; 8. Connecting plate B; 9. Second damping spring; 10. Mounting ring; 11. Mounting hole; 12. Positioning hole A; 13. Positioning hole B; 14. Threaded rod; 15. Threaded hole; 16. Connecting hole A; 17. Hexagonal hole; 18. Connecting hole B; 19. Pressure relief valve; 20. Oil reservoir; 21. Reset valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: As Figure 1-5As shown: A piston is fixedly installed at the bottom end of piston rod 2 inside piston cylinder 1. Oil is filled inside piston cylinder 1. A fixing block A3 is installed at the top end of piston rod 2. A connecting plate A4 is fixedly installed on the top surface of fixing block A3. A first damping spring 5 of matching specifications is installed on the outer wall of piston rod 2. A telescopic rod 6 is fixedly installed on the bottom surface of piston cylinder 1. A fixing block B7 is fixedly installed at the bottom end of telescopic rod 6. A connecting plate B8 is fixedly installed on the bottom surface of fixing block B7. A second damping spring 9 of matching specifications is installed on the outer wall of telescopic rod 6. The coefficient of the second damping spring 9 is larger than that of the first damping spring 5. Through the arrangement of the first and second damping springs 5 ​​and 9, when the connecting plate A4 is compressed, the first damping spring 5 and piston rod 2 move downwards to absorb shock. Since the coefficient of the second damping spring 9 is greater than that of the first damping spring 5, the second damping spring 9 will only deform when the compressive force exceeds the critical point, reducing the vertical floating distance of the device and improving its performance.

[0025] Example 2: As Figure 2-5 As shown: Mounting rings 10 of matching specifications are fixedly installed on the upper and lower sides of the first damping spring 5. The top surface of the mounting rings 10 has four sets of through mounting holes 11. The top surface of the piston cylinder 1 has four sets of positioning holes A12 corresponding to the mounting holes 11. The bottom surface of the fixing block A3 has four sets of positioning holes B13 corresponding to the mounting holes 11. A threaded rod 14 is fixedly installed at the top of the piston rod 2. The bottom surface of the fixing block A3 has threaded holes 15 of matching specifications. Through the mounting rings 10 and threaded rod 14, the mounting rings 10 and the first damping spring 5 are sleeved on the outer wall of the piston rod 2. Then, the fixing block A3 is connected to the piston rod 2 through the threaded rod 14 and threaded holes 15. Finally, the mounting rings 10 are connected and fixed to the piston cylinder 1 and the fixing block A3 respectively using locking bolts. Installation and disassembly are simple and convenient, facilitating later maintenance and reducing maintenance costs.

[0026] Example 3: As Figure 2-3 As shown: A pressure relief valve 19 is fixedly installed on the outer wall of the piston cylinder 1, and a pressure sensor is installed on the pressure relief valve 19. When the pressure of the piston moving and squeezing the oil exceeds the threshold, the pressure relief valve 19 will automatically release pressure, thereby improving the safety of the device.

[0027] The working principle and usage process of this utility model are as follows: When the device needs to work, when the connecting plate A4 is squeezed, the first damping spring 5 and the piston rod 2 move downward to dampen the vibration. Since the coefficient of the second damping spring 9 is greater than that of the first damping spring 5, the second damping spring 9 will deform only when the extrusion force exceeds the critical point, thereby reducing the vertical floating distance of the device and improving the usage effect. At the same time, the mounting ring 10 and the first damping spring 5 are sleeved on the outer wall of the piston rod 2. Then, the fixing block A3 is connected to the piston rod 2 through the threaded rod 14 and the threaded hole 15. Finally, the mounting ring 10 is connected and fixed to the piston cylinder 1 and the fixing block A3 respectively through the locking bolt. The installation and disassembly are simple and convenient, which facilitates later maintenance and reduces maintenance costs.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-spring shock absorber, comprising a piston cylinder (1), wherein a piston rod (2) of compatible specifications is slidably connected to the top surface of the piston cylinder (1). Its features are: The piston rod (2) is fixedly installed with a piston inside the piston cylinder (1). The piston cylinder (1) is filled with oil. The piston rod (2) is fixedly installed with a fixing block A (3). The top surface of the fixing block A (3) is fixedly installed with a connecting plate A (4). The outer wall of the piston rod (2) is fitted with a first damping spring (5) of the same specification. The bottom surface of the piston cylinder (1) is fixedly installed with a telescopic rod (6). The bottom end of the telescopic rod (6) is fixedly installed with a fixing block B (7). The bottom surface of the fixing block B (7) is fixedly installed with a connecting plate B (8). The outer wall of the telescopic rod (6) is fitted with a second damping spring (9) of the same specification. The coefficient of the second damping spring (9) is larger than that of the first damping spring (5). The first shock absorber spring (5) is fixedly installed with a matching mounting ring (10) on its upper and lower sides respectively. The top surface of the mounting ring (10) is provided with four sets of through mounting holes (11). The top surface of the piston cylinder (1) is provided with four sets of positioning holes A (12) that are opposite to the mounting holes (11). The bottom surface of the fixing block A (3) is provided with four sets of positioning holes B (13) that are opposite to the mounting holes (11). The top end of the piston rod (2) is fixedly installed with a threaded rod (14). The bottom surface of the fixing block A (3) is provided with a matching threaded hole (15).

2. The dual-spring vibration damper according to claim 1, characterized in that: The top surface of the connecting plate A (4) is provided with four sets of connecting holes A (16) that are in opposite positions, and the top surface of the connecting plate B (8) is provided with four sets of connecting holes B (18) that are in opposite positions.

3. A dual-spring vibration damper according to claim 1, characterized in that: The top surface of the connecting plate A (4) is provided with a hexagonal hole (17).

4. A dual-spring vibration damper according to claim 1, characterized in that: A pressure relief valve (19) is fixedly installed on the outer wall of the piston cylinder (1), and a pressure sensor is mounted on the pressure relief valve (19).

5. A dual-spring vibration damper according to claim 4, characterized in that: An oil reservoir (20) is fixedly installed on the outside of the pressure relief valve (19), and a reset valve (21) of the same specification is assembled on the right side of the oil reservoir (20).

6. A dual-spring vibration damper according to claim 1, characterized in that: A rubber pad is fitted between the mounting ring (10), the piston cylinder (1), and the fixing block A (3).

Images