Ring spring self-resetting viscous damper with monitoring function

By designing viscous dampers with ring spring self-reset and monitoring functions, the problem of existing dampers lacking self-reset function and real-time monitoring is solved, and the structure self-reset and data accurate monitoring is achieved, which improves the shock resistance and use effect of the dampers.

CN120139385AActive Publication Date: 2025-06-13SHANGHAI STEEL DAMPING TECH OF BUILDING CO LTD
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Patent Information

Application Number
CN202510309367.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-17
Publication Date
2025-06-13
Estimated Expiration
2045-03-17

AI Technical Summary

Technical Problem

The existing building dampers lack self-resetting function, resulting in large residual deformation of the structure after strong earthquakes, high maintenance costs, and inability to monitor the working status and seismic data in real time, affecting the use effect.

Method used

A ring spring self-reset viscous damper with monitoring function is designed, including fixing components, energy dissipation components, reset components and monitoring components. The reset assembly realizes self-resetting through the ring spring sleeve rod and the ring spring sleeve. The monitoring assembly monitors the damper status and seismic data in real time through the force measuring ring, distance detection device and pressure testing device.

Benefits of technology

The damper is realized to reset itself after a strong earthquake, reduce structural residual deformation, reduce maintenance costs, and understand the use of damper and seismic data through real-time monitoring, improving the use effect and data accuracy of the damper.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the field of dampers, in particular to a ring spring self-resetting viscous damper with a monitoring function, which comprises a fixing assembly, an energy dissipation assembly, a resetting assembly and a monitoring assembly, the energy dissipation assembly comprises an oil cylinder, a piston is arranged in the oil cylinder, the piston is connected with a piston rod, two ends of the piston rod respectively extend out of the oil cylinder, and the resetting assembly comprises a ring spring sleeve rod. The front portion of the ring spring sleeve rod is fixedly connected with the rear portion of the piston rod, the monitoring assembly comprises an extension pipe, and a distance detection device used for detecting the displacement distance of the front end of the piston rod is arranged in the extension pipe. The energy dissipation device has good energy dissipation and self-resetting functions, can control the response of a main body structure during an earthquake, can effectively reduce the residual deformation of the structure after the earthquake, can understand the actual use condition of the damper, ensures the accuracy of the obtained data, can reflect the earthquake data by using the operation state of the energy dissipation assembly, and has a good application prospect. And the use effect of the damper is guaranteed.
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Description

Technical Field

[0001] The present invention belongs to the field of dampers, and particularly relates to a ring spring self - reset viscous damper with a monitoring function. Background Art

[0002] A building damper is a safety device installed on a building to reduce earthquake damage. It is widely used in civil buildings, industrial buildings, bridges, etc. When an earthquake occurs, the damper maximally absorbs and dissipates the impact energy of the earthquake on the building structure, greatly alleviating the impact and damage of the earthquake on the building structure.

[0003] However, the existing building dampers still have many defects. Although they play a role in energy dissipation and shock absorption, they do not have a self - reset function. Especially under strong earthquake actions, due to the material entering plastic yield for energy dissipation, the damper structure after the earthquake will still generate large residual deformations, and the post - earthquake maintenance cost will be greater than the reconstruction cost. And the demolition and reconstruction of a large number of buildings will bring incalculable economic losses to society. Moreover, the functions of the existing building dampers are relatively single. They cannot monitor the working state of the building dampers, cannot judge the actual usage situation of the building dampers, and at the same time, they cannot collect earthquake data in time, and cannot provide data guarantee for earthquake damage assessment, emergency response and post - earthquake rescue, etc., greatly affecting the use effect of the building dampers. Summary of the Invention

[0004] In view of the above problems, the present invention provides a ring spring self - reset viscous damper with a monitoring function.

[0005] A ring spring self - reset viscous damper with a monitoring function, characterized in that it comprises a fixing component, an energy - dissipation component, a reset component and a monitoring component;

[0006] The fixing component includes a front pin head and a rear pin head;

[0007] The energy - dissipation component includes an oil cylinder, a piston is arranged in the oil cylinder, the piston is connected with a piston rod, and both ends of the piston rod respectively extend out of the oil cylinder, and a pressure testing device is also arranged in the oil cylinder;

[0008] The reset component includes a ring spring sleeve rod, the front part of the ring spring sleeve rod is fixedly connected with the rear part of the piston rod, an outer side of the ring spring sleeve rod is sleeved with a ring spring sleeve, the front part of the ring spring sleeve is sleeved on an outer side of the rear part of the oil cylinder and is fixedly connected with the oil cylinder, the rear part of the ring spring sleeve rod extends out of the ring spring sleeve and is connected with the rear pin head, an annular spring is arranged between the ring spring sleeve rod and the ring spring sleeve, and a force - measuring ring is arranged in the ring spring sleeve near the annular spring;

[0009] The monitoring component includes an extension pipe. The front part of the extension pipe is connected to the front pin head, and the rear part of the extension pipe is connected to the front part of the oil cylinder. A distance detection device for detecting the displacement distance of the front end of the piston rod is provided inside the extension pipe.

[0010] Furthermore, sealing components are provided on both inner sides of the oil cylinder. The sealing components include a baffle plate, a bushing, and an oil cylinder retaining ring arranged in sequence from the inside out. A first through hole is provided in the middle of the baffle plate, a second through hole is provided in the middle of the bushing, a first sealing groove is provided on the outer surface of the bushing, a first sealing ring is provided in the first sealing groove, a second sealing groove is provided on the inner wall of the second through hole, and a second sealing ring is provided in the second sealing groove.

[0011] Furthermore, a first ring spring spacer and a second ring spring spacer are respectively provided on the front and rear sides inside the ring spring sleeve. Openings for passing through the ring spring rod are provided in the middle of the first ring spring spacer and the second ring spring spacer. The annular spring is arranged between the first ring spring spacer and the second ring spring spacer, and the force measuring ring is arranged on the front side of the first ring spring spacer;

[0012] The front part of the ring spring rod is threadedly connected with a first fixing nut. The first fixing nut is arranged on the front side of the first ring spring spacer, and the outer diameter of the first fixing nut is larger than the diameter of the opening;

[0013] A sleeve retaining ring is provided inside the ring spring sleeve and on the rear side of the second ring spring spacer. The rear part of the ring spring rod is threadedly connected with a second fixing nut. The second fixing nut is arranged on the rear side of the second ring spring spacer, and the outer diameter of the second fixing nut is larger than the diameter of the opening.

[0014] Furthermore, a first annular limiting groove is provided on the rear side of the first ring spring spacer, a second annular limiting groove is provided on the front side of the second ring spring spacer, and both ends of the annular spring are respectively located in the first annular limiting groove and the second annular limiting groove;

[0015] There are two annular springs. The two annular springs include an inner spring and an outer spring sleeved outside the inner spring. The inner spring and the outer spring are concentrically arranged.

[0016] Furthermore, a positioning collar is provided on the inner side of the ring spring sleeve. The front side of the positioning collar abuts against the rear end face of the oil cylinder, and the force measuring ring is arranged between the positioning collar and the first ring spring spacer.

[0017] Furthermore, the distance detection device adopts a wire-drawing type displacement gauge. The front part of the wire-drawing type displacement gauge is fixed in the middle side of the inner wall of the extension pipe, and the rear part of the wire-drawing type displacement gauge is fixed on the front end part of the piston rod.

[0018] Furthermore, the pressure testing device uses a pressure sensor.

[0019] Furthermore, the monitoring component includes a control box which is arranged outside the oil cylinder. A control board is provided inside the control box, and a data storage chip is arranged on the control board. The force measuring ring, the distance detection device, and the pressure testing device are all electrically connected to the control board, and the control board is further connected with a wireless signal transceiver.

[0020] Furthermore, the oil cylinder is filled with damping fluid.

[0021] Furthermore, calculations are performed based on the monitoring data of the pressure testing device and the distance detection device to judge the occurrence of an earthquake.

[0022] And the accuracy of the judgment result is evaluated through the monitoring data of the force measuring ring.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) By introducing a reset component into the traditional energy dissipation device, the energy dissipation device has both good energy dissipation and self-resetting functions. It can not only control the seismic response of the main structure, but also effectively reduce the residual deformation after the earthquake, so that the structure can quickly restore its use function without repair or with only minor repair after the earthquake.

[0025] (2) It can understand the actual use situation of the damper. By arranging a force measuring ring in the reset component, it can monitor whether the damper completes self-resetting after the earthquake. On the one hand, it can reflect the use situation of the damper to judge whether repair is needed, and on the other hand, it can also provide strong data guarantee for the monitoring data and subsequent aftershock detection, etc., to ensure the accuracy of the obtained data.

[0026] (3) Using the operating state of the energy dissipation component to reflect earthquake data, and monitoring the operating state of the energy dissipation component with the help of the monitoring component to provide data support for judging the earthquake intensity and magnitude, which is beneficial to subsequent earthquake damage assessment, emergency response and post-earthquake rescue, etc., and improves the use effect of the damper.

[0027] Other features and advantages of the present invention will be described in the subsequent specification, and some of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification and the drawings. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0029] Figure 1 shows a partial structural cross-sectional view of the present invention;

[0030] Figure 2 shows a cross-sectional view of the energy dissipation component of the present invention;

[0031] Figure 3 shows a cross-sectional view of the reset component of the present invention.

[0032] In the figure: 1, front pin head; 2, rear pin head; 3, oil cylinder; 4, piston; 5, piston rod; 6, baffle; 7, bushing; 8, oil cylinder retaining ring; 9, extension pipe; 10, distance detection device; 11, control box; 12, pressure test device; 13, ring spring sleeve; 14, ring spring rod; 15, force measuring ring; 16, positioning collar; 17, first sealing groove; 18, second sealing groove; 19, first locking nut; 20, second locking nut; 21, first ring spring pad; 22, second ring spring pad; 23, first fixing nut; 24, second fixing nut; 25, sleeve retaining ring; 26, outer spring; 27, inner spring. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0034] Such as Figures 1-3As shown in the figure, a ring spring self-resetting viscous damper with a monitoring function includes a fixing component, an energy dissipation component, a resetting component and a monitoring component; the fixing component includes a front pin head 1 and a rear pin head 2; the energy dissipation component includes an oil cylinder 3, a piston 4 is arranged in the oil cylinder 3, the piston 4 is connected with a piston rod 5, and both ends of the piston rod 5 extend out of the oil cylinder 3 respectively. A pressure testing device 12 is also arranged in the oil cylinder 3; the resetting component includes a ring spring sleeve rod 14, the front part of the ring spring sleeve rod 14 is fixedly connected with the rear part of the piston rod 5, an outer side of the ring spring sleeve rod 14 is sleeved with a ring spring sleeve 13, a front part of the ring spring sleeve 13 is sleeved on an outer side of a rear part of the oil cylinder 3 and is fixedly connected with the oil cylinder 3, a rear part of the ring spring sleeve rod 14 extends out of the ring spring sleeve 13 and is connected with the rear pin head 2, an annular spring is arranged between the ring spring sleeve rod 14 and the ring spring sleeve 13, and a force measuring ring 15 is arranged in the ring spring sleeve 13 near the annular spring; the monitoring component includes an extension pipe 9, a front part of the extension pipe 9 is connected with the front pin head 1, a rear part of the extension pipe 9 is connected with a front part of the oil cylinder 3, and a distance detecting device 10 for detecting a displacement distance of a front end of the piston rod 5 is arranged in the extension pipe 9. The present invention enables the energy dissipation device to have good energy dissipation and self-resetting functions, can control the seismic response of the main structure, can effectively reduce the residual deformation after the structure is shaken, can understand the actual use condition of the damper, ensure the accuracy of the obtained data, and can also utilize the running state of the energy dissipation component to reflect seismic data, thus guaranteeing the use effect of the damper.

[0035] Sealing components are arranged on both inner sides of the oil cylinder 3. The sealing components include a baffle 6, a bushing 7 and an oil cylinder retaining ring 8 which are arranged in sequence from inside to outside. A first through hole is arranged in the middle of the baffle 6, a second through hole is arranged in the middle of the bushing 7, a first sealing groove 17 is arranged on an outer surface of the bushing 7, a first sealing ring is arranged in the first sealing groove 17, a second sealing groove 18 is arranged on an inner wall of the second through hole, a second sealing ring is arranged in the second sealing groove 18, and the piston rod 5 passes through the first through hole and the second through hole. This design guarantees the sealing property of the oil cylinder 3.

[0036] On the front and rear sides inside the ring spring sleeve 13, a first ring spring cushion block 21 and a second ring spring cushion block 22 are respectively provided. Through holes for passing through the ring spring rod 14 are provided in the middle of the first ring spring cushion block 21 and the second ring spring cushion block 22. The annular spring is arranged between the first ring spring cushion block 21 and the second ring spring cushion block 22, and the force measuring ring 15 is arranged on the front side of the first ring spring cushion block 21; the front part of the ring spring rod 14 is threadedly connected with a first fixing nut 23. The first fixing nut 23 is arranged on the front side of the first ring spring cushion block 21, and the outer diameter of the first fixing nut 23 is larger than the diameter of the through hole; inside the ring spring sleeve 13 and on the rear side of the second ring spring cushion block 22, a sleeve retaining ring 25 is provided. The rear part of the ring spring rod 14 is threadedly connected with a second fixing nut 24. The second fixing nut 24 is arranged on the rear side of the second ring spring cushion block 22, and the outer diameter of the second fixing nut 24 is larger than the diameter of the through hole. When the ring spring rod 14 makes a reciprocating motion in the front and rear directions, it can drive the first fixing nut 23 and the second fixing nut 24 to push the first ring spring cushion block 21 and the second ring spring cushion block 22 respectively, so as to compress the annular spring, and realize reset under the action of the annular spring.

[0037] Specifically, the first fixing nut 23 is located inside the force measuring ring 15, and the outer diameter of the first fixing nut 23 is smaller than the inner diameter of the force measuring ring 15; the second fixing nut 24 is located inside the sleeve retaining ring 25, and the outer diameter of the second fixing nut 24 is smaller than the inner diameter of the sleeve retaining ring 25.

[0038] A first annular limiting groove is provided on the rear side of the first ring spring cushion block 21, and a second annular limiting groove is provided on the front side of the second ring spring cushion block 22. The two ends of the annular spring are respectively located in the first annular limiting groove and the second annular limiting groove; there are two annular springs. The two annular springs include an inner spring 27 and an outer spring 26 sleeved outside the inner spring 27. The inner spring 27 and the outer spring 26 are concentrically arranged. The concentrically arranged inner spring 27 and outer spring 26 ensure the reset effect of the reset assembly. It can not only drive the piston rod 5 of the energy dissipation assembly to reset through the ring spring rod 14, but also cooperate with the energy dissipation assembly to play a further buffering and shock absorption effect, so that the damper can effectively reduce the impact and damage of the earthquake on the building structure.

[0039] A positioning collar 16 is provided on the inner side of the ring spring sleeve 13. The front side of the positioning collar 16 abuts against the rear end face of the oil cylinder 3. The force measuring ring 15 is arranged between the positioning collar 16 and the first ring spring cushion block 21, which is beneficial to the stable installation of the force measuring ring 15 and can accurately detect the reset situation of the reset assembly.

[0040] The outer surface of the rear part of the piston rod 5 is provided with a first external thread. The front side of the annular spring sleeve rod 14 is provided with an insertion hole for inserting the rear part of the piston rod 5. The inner wall of the insertion hole is provided with a first internal thread adapted to the first external thread. Thus, the piston rod 5 and the annular spring sleeve rod 14 are connected by threads. The rear part of the piston rod 5 is also connected by threads with a first locking nut 19, and the first locking nut 19 abuts against the front end of the annular spring sleeve rod 14 to ensure the connection strength between the piston rod 5 and the annular spring sleeve rod 14. Moreover, in order to ensure the connection strength between the oil cylinder 3 and the annular spring sleeve 13, the outer surface of the rear part of the oil cylinder 3 is provided with a second external thread. The inner surface of the front part of the annular spring sleeve 13 is provided with a second internal thread adapted to the second external thread. Thus, the oil cylinder 3 and the annular spring sleeve 13 are connected by threads. The rear part of the oil cylinder 3 is also connected by threads with a second locking nut 20, and the second locking nut 20 abuts against the front end of the annular spring sleeve 13.

[0041] The distance detection device 10 adopts a wire-drawing type displacement gauge. The front part of the wire-drawing type displacement gauge is fixed in the middle side of the inner wall of the extension pipe 9, and the rear part of the wire-drawing type displacement gauge is fixed on the front end of the piston rod 5. Thus, the displacement distance of the front end of the piston rod 5 is detected by the wire-drawing type displacement gauge to facilitate subsequent judgment of the earthquake intensity and magnitude.

[0042] In order to more accurately monitor the earthquake intensity and magnitude, the pressure test device 12 can adopt a pressure sensor to facilitate detection of the internal pressure change of the damper during an earthquake by the pressure sensor, and to facilitate analysis of the damping force of the damper, thereby judging the earthquake intensity and magnitude.

[0043] The monitoring component includes a control box 11. The control box 11 is arranged outside the oil cylinder 3. A control board is arranged inside the control box 11. A data storage chip is arranged on the control board. The force measuring ring 15, the distance detection device 10, and the pressure test device 12 are all electrically connected to the control board. The control board is also connected with a wireless signal transceiver, so as to remotely transmit the monitoring data of the force measuring ring 15, the distance detection device 10, and the pressure test device 12, facilitating personnel to obtain the reset situation, operating state of the damper, and earthquake-related data, etc.

[0044] The oil cylinder 3 is filled with damping liquid to enhance the energy dissipation effect of the energy dissipation component. The piston 4 divides the inside of the oil cylinder 3 into two cavities, and the cavities are filled with damping liquid. When the piston rod 5 drives the piston 4 to make reciprocating motion in the front and back directions in the oil cylinder 3, the damping liquid forms a resistance to the piston 4, thereby achieving the effect of energy dissipation and shock absorption. Specifically, the damping liquid can adopt silicone oil.

[0045] When the present invention is in use, calculations can be performed based on the monitoring data of the pressure testing device 12 and the distance detection device 10 to determine the occurrence of an earthquake; and the accuracy of the judgment result can be evaluated through the monitoring data of the force measuring ring 15. The damping force inside the oil cylinder 3 is monitored by the pressure testing device 12, and the real-time movement speed of the piston 4 is deduced by reverse calculation. The calculation formula used is as follows:

[0046] F = CV α

[0047] In the formula: F is the damping force, C is the damping coefficient, V is the piston movement speed, and α is the speed index;

[0048] The displacement distance at the front end of the piston rod 5 is monitored by the distance detection device 10, and the movement frequency of the piston 4 is calculated. The calculation formula used is as follows:

[0049]

[0050] In the formula: f is the movement frequency of the piston, V is the piston movement speed, π is the pi, and A is the displacement distance at the front end of the piston rod;

[0051] The damping force corresponds to the output force of the damper when the piston 4 is at different movement speeds. Specifically: in the case of a minor earthquake, the corresponding movement speed and movement frequency of the piston 4 are relatively low, and the damping coefficient and speed index of the damper are fixed values, so the damping force is relatively small; in the case of a major earthquake, the corresponding movement speed and movement frequency of the piston 4 are relatively high, so the damping force is relatively large, and then the occurrence of an earthquake is judged.

[0052] Whether the force is within the preset threshold range is monitored by the force measuring ring 15. If the monitored force value is within the threshold range, it means that the damper has completed self-resetting after the earthquake, ensuring the structural stability of the damper, the accuracy of the monitoring data of the pressure testing device 12 and the distance detection device 10, and providing data guarantee for subsequent aftershock monitoring; if the monitored force value is not within the threshold range, it means that the damper has not completed self-resetting after the earthquake, the structure of the damper has been damaged to a certain extent and needs to be repaired, and it is difficult to ensure the accuracy of the monitoring data of the pressure testing device 12 and the distance detection device 10.

[0053] A ring spring self - resetting viscous damper with a monitoring function provided by the present invention can effectively improve the seismic toughness of a structure. Due to the interaction between the ring spring sleeve 13 and the ring spring rod 14, the annular spring is in a tensile or compressive state under both tensile and compressive states of the damper. When the annular spring is in an equilibrium state, a pre - load that can overcome the friction force and exert the resetting ability is applied. Thus, during an earthquake, the piston 4 reciprocates in the damping medium to dissipate the seismic kinetic energy, and the annular spring dissipates energy through its own friction. At the same time, this design also has a force - measuring ring 15, a distance detection device 10, and a pressure - testing device, which can monitor the internal pressure change of the damper during an earthquake, analyze the earthquake intensity, and monitor the displacement change and reset situation of the self - resetting damper.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ring spring self-resetting viscous damper with monitoring function, characterized in that: Including fixing components, energy dissipation components, resetting components and monitoring components; The fixing assembly comprises a front pin head and a rear pin head; The energy dissipation assembly includes an oil cylinder, a piston is arranged in the oil cylinder, the piston is connected to a piston rod, and both ends of the piston rod extend out of the oil cylinder respectively, and a pressure testing device is arranged in the oil cylinder; The reset assembly comprises a ring spring sleeve rod, the front portion of which is fixedly connected to the rear portion of the piston rod, a ring spring sleeve is sleeved on the outer side of the ring spring sleeve rod, the front portion of the ring spring sleeve is sleeved on the outer side of the rear portion of the oil cylinder and is fixedly connected to the oil cylinder, the rear portion of the ring spring sleeve rod extends out from the ring spring sleeve and is connected to the rear pin head, an annular spring is arranged between the ring spring sleeve rod and the ring spring sleeve, and a force measuring ring is arranged in the ring spring sleeve near the annular spring; The monitoring component includes an extension tube, the front part of the extension tube is connected to the front pin head, the rear part of the extension tube is connected to the front part of the oil cylinder, and a distance detection device for detecting the displacement distance of the front end of the piston rod is provided in the extension tube.

2. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 1, characterized in that: Sealing components are provided on both sides of the interior of the oil cylinder, and the sealing components include a baffle, a bushing and a cylinder retaining ring arranged in sequence from the inside to the outside, a first through hole is provided in the middle of the baffle, a second through hole is provided in the middle of the bushing, a first sealing groove is provided on the outer surface of the bushing, a first sealing ring is provided in the first sealing groove, a second sealing groove is provided on the inner wall of the second through hole, and a second sealing ring is provided in the second sealing groove.

3. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 1, characterized in that: A first ring spring pad and a second ring spring pad are respectively provided at the front and rear sides of the ring spring sleeve, the middle parts of the first ring spring pad and the second ring spring pad are both provided with openings for passing the ring spring sleeve rod, the annular spring is arranged between the first ring spring pad and the second ring spring pad, and the force measuring ring is arranged at the front side of the first ring spring pad; The front part of the ring spring sleeve rod is connected with a first fixing nut through a thread, the first fixing nut is arranged at the front side of the first ring spring pad, and the outer diameter of the first fixing nut is larger than the diameter of the opening; A sleeve retaining ring is provided in the ring spring sleeve and at the rear side of the second ring spring washer. The rear part of the ring spring sleeve rod is threadedly connected with a second fixing nut. The second fixing nut is arranged at the rear side of the second ring spring washer. The outer diameter of the second fixing nut is greater than the diameter of the opening.

4. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 3, characterized in that: A first annular limiting groove is provided at the rear side of the first annular spring pad, a second annular limiting groove is provided at the front side of the second annular spring pad, and two ends of the annular spring are respectively located in the first annular limiting groove and the second annular limiting groove; There are two annular springs, and the two annular springs include an inner spring and an outer spring sleeved on the outer side of the inner spring. The inner spring and the outer spring are concentrically arranged.

5. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 3, characterized in that: A positioning collar is provided on the inner side of the ring spring sleeve, the front side of the positioning collar abuts against the rear end surface of the oil cylinder, and the force measuring ring is arranged between the positioning collar and the first ring spring pad.

6. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 1, characterized in that: The distance detection device adopts a wire-drawing displacement meter, the front part of which is fixed to the middle side of the inner wall of the extension tube, and the rear part of which is fixed to the front end of the piston rod.

7. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 7, characterized in that: The pressure testing device adopts a pressure sensor.

8. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 7, characterized in that: The monitoring component includes a control box, which is arranged on the outside of the cylinder. A control board is arranged in the control box, and a data storage chip is arranged on the control board. The force measuring ring, the distance detection device, and the pressure testing device are all electrically connected to the control board, and the control board is also connected to a wireless signal transceiver.

9. A ring spring self-resetting viscous damper with monitoring function as claimed in claim 1, characterized in that: The oil cylinder is filled with damping fluid.

10. A ring spring self-resetting viscous damper with monitoring function as claimed in any one of claims 1 to 9, characterized in that: Calculating based on the monitoring data of the pressure testing device and the distance detection device to determine the occurrence of an earthquake; The accuracy of the judgment result is evaluated through the monitoring data of the force measuring ring.

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