Ring spring self-resetting viscous damper with monitoring function

Abstract

The present application relates to the field of damper, especially relates to a ring spring self-resetting viscous damper with monitoring function, which comprises a fixing assembly, an energy dissipation assembly, a reset assembly and a monitoring assembly, the energy dissipation assembly comprises a oil cylinder, the oil cylinder is provided with a piston, the piston is connected with a piston rod, and the both ends of the piston rod respectively extend out of the oil cylinder, the reset assembly comprises 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, and the monitoring assembly comprises a lengthening pipe, the lengthening pipe is provided with a distance detection device for detecting the displacement distance of the front end of the piston rod. The energy dissipation device has good energy dissipation and self-resetting functions, can control the seismic response of the main body structure, can effectively reduce the residual deformation of the structure after the earthquake, can understand the actual use of the damper, can ensure the accuracy of the obtained data, can use the running state of the energy dissipation assembly to reflect the seismic data, and can ensure the use effect of the damper.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of dampers, and particularly relates to a ring spring self-resetting viscous damper with a monitoring function. BACKGROUND

[0002] A damper for buildings is a safety device installed on a building for reducing earthquake damage, which is widely used in civil buildings, industrial buildings and bridges, etc. When an earthquake occurs, the damper maximally absorbs and consumes the impact energy of the earthquake on the building structure, greatly relieving the impact and damage of the earthquake on the building structure.

[0003] However, the existing damper for buildings still has many defects. Although it plays a role in energy dissipation and shock absorption, it does not have a self-resetting function. In particular, under the action of strong earthquakes, due to the plastic yield of the material to dissipate energy, the damper structure will still have a large residual deformation after the earthquake, and the post-earthquake maintenance cost will be greater than the reconstruction cost. The demolition and reconstruction of a large number of buildings will bring immeasurable economic losses to the society. In addition, the existing damper for buildings has a single function, cannot monitor the working state of the damper for buildings, cannot judge the actual use of the damper for buildings, cannot collect earthquake data in time, and cannot provide data guarantee for earthquake damage assessment, emergency response and post-earthquake rescue, greatly affecting the use effect of the damper for buildings. SUMMARY

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

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

[0006] The fixing assembly comprises a front pin head and a rear pin head.

[0007] The energy dissipation assembly comprises an oil cylinder, the oil cylinder is provided with a piston, the piston is connected with a piston rod, both ends of the piston rod extend out of the oil cylinder, and the oil cylinder is further provided with a pressure testing device.

[0008] The reset assembly comprises 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, a ring spring sleeve is sleeved on the outer side of the ring spring sleeve rod, the front part of the ring spring sleeve is sleeved on the 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 close to the annular spring.

[0009] The monitoring assembly comprises a lengthening pipe, a front part of the lengthening pipe is connected with the front pin head, a rear part of the lengthening pipe is connected with a front part of the oil cylinder, and a distance detecting device for detecting displacement distance of a front end of the piston rod is arranged in the lengthening pipe.

[0010] Further, sealing components are arranged on both sides of the inside of the oil cylinder, the sealing components comprise baffles, bushings and oil cylinder baffle rings arranged in sequence from inside to outside, a first through hole is arranged in the middle part of the baffle, a second through hole is arranged in the middle part of the bushing, a first sealing groove is arranged on the outer surface of the bushing, a first sealing ring is arranged in the first sealing groove, a second sealing groove is arranged on the inner wall of the second through hole, and a second sealing ring is arranged in the second sealing groove.

[0011] Further, first ring spring pads and second ring spring pads are arranged on the front side and the rear side in the ring spring sleeve respectively, the middle parts of the first ring spring pads and the second ring spring pads are provided with through holes for the ring spring sleeve rod, the ring spring is arranged between the first ring spring pad and the second ring spring pad, and the force measuring ring is arranged on the front side of the first ring spring pad.

[0012] The front part of the ring spring sleeve rod is threadedly connected with a first fixing nut, the first fixing nut is arranged on the front side of the first ring spring pad, and the outer diameter of the first fixing nut is greater than the diameter of the through hole.

[0013] The rear side of the second ring spring pad in the ring spring sleeve is provided with a sleeve baffle ring, the rear part of the ring spring sleeve rod is threadedly connected with a second fixing nut, the second fixing nut is arranged on the rear side of the second ring spring pad, and the outer diameter of the second fixing nut is greater than the diameter of the through hole.

[0014] Further, the rear side of the first ring spring pad is provided with a first annular limiting groove, the front side of the second ring spring pad is provided with a second annular limiting groove, and the two ends of the ring spring are respectively located in the first annular limiting groove and the second annular limiting groove.

[0015] The ring spring is two, the two ring springs comprise an inner spring and an outer spring sleeved on the outer side of the inner spring, and the inner spring and the outer spring are concentrically arranged.

[0016] Further, the inner side of the ring spring sleeve is provided with a positioning sleeve ring, the front side surface of the positioning sleeve ring abuts against the rear end surface of the oil cylinder, and the force measuring ring is arranged between the positioning sleeve ring and the first ring spring pad.

[0017] Further, the distance detecting device adopts a pull-wire type displacement meter, the front part of the pull-wire type displacement meter is fixed on the inner wall of the middle side of the lengthening pipe, and the rear part of the pull-wire type displacement meter is fixed on the front end part of the piston rod.

[0018] Further, the pressure testing device adopts a pressure sensor.

[0019] Further, the monitoring assembly comprises a control box arranged outside the oil cylinder, a control board is arranged in the control box, a data storage chip is arranged on the control board, the force ring, the distance detection device and the pressure testing device are electrically connected with the control board, and the control board is further connected with a wireless signal transceiver.

[0020] Further, the oil cylinder is filled with damping liquid.

[0021] Further, the occurrence of an earthquake is judged by calculating according to the monitoring data of the pressure testing device and the distance detection device.

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

[0023] The beneficial effects of the present application are:

[0024] (1) The reset assembly is introduced into the traditional energy dissipation device, so that the energy dissipation device has good energy dissipation and self-resetting functions, can control the seismic response of the main structure, and can effectively reduce the residual deformation of the structure after the earthquake, so that the structure can quickly recover its use function after the earthquake without repair or slight repair.

[0025] (2) The actual use of the damper can be understood, the force ring is arranged in the reset assembly, the damper can be monitored after the earthquake whether it is reset, on the one hand, the use of the damper can be reflected, so as to judge whether it needs to be repaired, on the other hand, it can also provide strong data guarantee for monitoring data and subsequent aftershock detection, and ensure the accuracy of the obtained data.

[0026] (3) The operation state of the energy dissipation assembly reflects the earthquake data, the operation state of the energy dissipation assembly is monitored by the monitoring assembly, data support is provided for judging the intensity and strength of the earthquake, so as to facilitate subsequent earthquake damage evaluation, emergency response and post-earthquake rescue, and the use effect of the damper is improved.

[0027] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structures indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and the ordinary skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0029] Fig. 1 Part of the structure of the present application is shown in the cross-sectional schematic diagram;

[0030] Fig. 2 The cross-sectional schematic diagram at the energy dissipation assembly of the present application is shown;

[0031] Fig. 3 The cross-sectional schematic diagram at the reset assembly of the present application is shown.

[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 baffle ring; 9, lengthening pipe; 10, distance detection device; 11, control box; 12, pressure testing device; 13, ring spring sleeve; 14, ring spring sleeve rod; 15, force measuring ring; 16, positioning sleeve ring; 17, first sealing groove; 18, second sealing groove; 19, first locking nut; 20, second locking nut; 21, first ring spring pad block; 22, second ring spring pad block; 23, first fixed nut; 24, second fixed nut; 25, sleeve baffle ring; 26, outer spring; 27, inner spring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without any creative effort are within the protection scope of the present application.

[0034] As Figs. 1-3As shown, a kind of ring spring self-resetting viscous damper with monitoring function includes fixed assembly, energy dissipation assembly, reset assembly and monitoring assembly;Fixed assembly includes front pin head 1, rear pin head 2;Energy dissipation assembly includes oil cylinder 3, and piston 4 is provided in oil cylinder 3, piston rod 5 is connected to piston 4, and both ends of piston rod 5 respectively extend out of oil cylinder 3, and pressure testing device 12 is further provided in oil cylinder 3;Reset assembly includes ring spring sleeve rod 14, and the rear part of ring spring sleeve rod 14 is fixedly connected with the rear part of piston rod 5, ring spring sleeve 13 is sleeved on the outer side of ring spring sleeve rod 14, the front part of ring spring sleeve 13 is sleeved on the rear outer side of oil cylinder 3 and is fixedly connected with oil cylinder 3, the rear part of ring spring sleeve rod 14 extends out of ring spring sleeve 13 and is connected with rear pin head 2, annular spring is provided between ring spring sleeve rod 14 and ring spring sleeve 13, and force ring 15 is provided in ring spring sleeve 13 close to annular spring;Monitoring assembly includes extension pipe 9, the front part of extension pipe 9 is connected with front pin head 1, the rear part of extension pipe 9 is connected with the front part of oil cylinder 3, distance detection device 10 for detecting the displacement distance of the front end of piston rod 5 is provided in extension pipe 9.The energy dissipation device of the application has good energy dissipation and self-resetting function, can control the seismic response of main structure, can effectively reduce the residual deformation of structure after earthquake, can understand the actual use of damper, ensure the accuracy of obtained data, can use the running state of energy dissipation assembly to reflect seismic data, and ensure the use effect of damper.

[0035] The inside of oil cylinder 3 is provided with sealing parts on both sides, and the sealing parts include baffle 6, bushing 7 and oil cylinder baffle ring 8 arranged in sequence from inside to outside, the middle part of baffle 6 is provided with first through hole, the middle part of bushing 7 is provided with second through hole, first sealing groove 17 is provided on the outer surface of bushing 7, first sealing ring is provided in first sealing groove 17, second sealing groove 18 is provided on the inner wall of second through hole, second sealing ring is provided in second sealing groove 18, and piston rod 5 passes through first through hole and second through hole, which ensures the sealing property of oil cylinder 3.

[0036] The front and rear sides of the ring spring sleeve 13 are respectively provided with a first ring spring pad 21 and a second ring spring pad 22, the middle parts of the first ring spring pad 21 and the second ring spring pad 22 are respectively provided with an opening hole for passing through the ring spring sleeve rod 14, a ring spring is arranged between the first ring spring pad 21 and the second ring spring pad 22, and the force ring 15 is arranged on the front side of the first ring spring pad 21; the front part of the ring spring sleeve 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 pad 21, and the outer diameter of the first fixing nut 23 is greater than the diameter of the opening hole; the rear side of the ring spring sleeve 13 and the rear side of the second ring spring pad 22 are provided with a sleeve stop ring 25, the rear part of the ring spring sleeve 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 pad 22, and the outer diameter of the second fixing nut 24 is greater than the diameter of the opening hole; when the ring spring sleeve rod 14 reciprocates forward and backward, the first fixing nut 23 and the second fixing nut 24 can respectively drive the first ring spring pad 21 and the second ring spring pad 22 to compress the ring spring and reset the ring spring under the action of the ring spring.

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

[0038] The rear side of the first ring spring pad 21 is provided with a first annular limiting groove, the front side of the second ring spring pad 22 is provided with a second annular limiting groove, and the two ends of the ring spring are respectively located in the first annular limiting groove and the second annular limiting groove; the ring spring is two, and the two ring springs include an inner spring 27 and an outer spring 26 sleeved on the outer side of the inner spring 27, the inner spring 27 and the outer spring 26 are concentrically arranged, the concentric arrangement of the inner spring 27 and the outer spring 26 guarantees the resetting effect of the resetting assembly, not only can drive the piston rod 5 of the energy dissipation assembly to reset through the ring spring sleeve rod 14, but also can further buffer and shock-absorb in cooperation with the energy dissipation assembly, so that the damper effectively reduces the impact and damage of the earthquake on the building structure.

[0039] The inner side of the ring spring sleeve 13 is provided with a positioning sleeve ring 16, the front side surface of the positioning sleeve ring 16 abuts against the rear end surface of the oil cylinder 3, the force ring 15 is arranged between the positioning sleeve ring 16 and the first ring spring pad 21, which is beneficial to the stable installation of the force ring 15 and can accurately detect the resetting condition of the resetting 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 ring 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 matched with the first external thread, and then the piston rod 5 and the ring spring sleeve rod 14 are connected through the thread connection. The rear part of the piston rod 5 is further connected with a first locking nut 19 through the thread connection, and the first locking nut 19 is tightly attached to the front end of the ring spring sleeve rod 14, so as to guarantee the connection strength between the piston rod 5 and the ring spring sleeve rod 14. In order to guarantee the connection strength between the oil cylinder 3 and the ring 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 ring spring sleeve 13 is provided with a second internal thread matched with the second external thread, and then the oil cylinder 3 and the ring spring sleeve 13 are connected through the thread connection. The rear part of the oil cylinder 3 is further connected with a second locking nut 20 through the thread connection, and the second locking nut 20 is tightly attached to the front end of the ring spring sleeve 13.

[0041] The distance detection device 10 adopts a wire displacement meter, the front part of the wire displacement meter is fixed in the inner wall of the middle side of the extension pipe 9, and the rear part of the wire displacement meter is fixed on the front end part of the piston rod 5, so as to detect the displacement distance of the front end of the piston rod 5 through the wire displacement meter, so as to judge the intensity and strength of the earthquake in the subsequent.

[0042] In order to more accurately monitor the intensity and strength of the earthquake, the pressure test device 12 can adopt a pressure sensor, so as to detect the internal pressure change of the damper during the earthquake through the pressure sensor, analyze the damping force of the damper, and then judge the intensity and strength of the earthquake.

[0043] The monitoring assembly includes a control box 11, the control box 11 is arranged outside the oil cylinder 3, the control box 11 is provided with a control board, the control board is provided with a data storage chip, the force ring 15, the distance detection device 10 and the pressure test device 12 are electrically connected with the control board, and the control board is further connected with a wireless signal transceiver, so as to remotely transmit the monitoring data of the force ring 15, the distance detection device 10 and the pressure test device 12, and facilitate personnel to know the reset condition, the running state of the damper and the earthquake related data.

[0044] The oil cylinder 3 is filled with damping liquid, so as to improve the energy dissipation effect of the energy dissipation assembly. The piston 4 divides the oil cylinder 3 into two cavities, which are filled with damping liquid. When the piston rod 5 drives the piston 4 to move back and forth in the oil cylinder 3, the damping liquid forms resistance to the piston 4, thereby achieving the effect of energy dissipation and shock absorption. Specifically, the damping liquid can be silicone oil.

[0045] The application can calculate the occurrence of the earthquake according to the monitoring data of the pressure testing device 12 and the distance detection device 10, and evaluate the accuracy of the judgment result according to the monitoring data of the force ring 15. The damping force in the oil cylinder 3 is monitored by the pressure testing device 12, the real-time movement speed of the piston 4 is deduced, and the calculation formula is as follows:

[0046] F=C*V α

[0047] In the formula, F is the damping force, C is the damping coefficient, V is the movement speed of the piston, and a is the speed index.

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

[0049]

[0050] In the formula, f is the movement frequency of the piston, V is the movement speed of the piston, π is the circular constant, and A is the displacement distance of the front end of the piston rod.

[0051] The damping force corresponds to the output of the damper at different movement speeds of the piston 4. Specifically, under a small earthquake, the movement speed and the movement frequency of the piston 4 are low, the damping coefficient and the speed index of the damper are fixed values, and the damping force is relatively small. Under a large earthquake, the movement speed and the movement frequency of the piston 4 are high, and the damping force is relatively large, thereby judging the occurrence of the earthquake.

[0052] The force is monitored by the force ring 15 to be within the preset threshold range. 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 is 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] The ring spring self-resetting viscous damper with monitoring function can effectively improve the seismic toughness of the structure. Due to the interaction between the ring spring sleeve 13 and the ring spring sleeve rod 14, the damper is in tension and compression state under tension and compression state, and when the ring spring is in the balanced state, the preloading that can overcome the friction and exert the reset ability is applied, so that during the earthquake, the piston 4 reciprocates in the damping medium to dissipate the seismic energy, and the ring spring dissipates energy through its own friction; at the same time, the design has the force monitoring ring 15, the distance detection device 10 and the pressure testing device, which can monitor the internal pressure change of the damper during the earthquake, analyze the earthquake intensity, and monitor the displacement change and reset condition of the self-resetting damper.

[0054] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ring spring self-centering viscous damper with a belt monitoring function, characterized by, The fixed assembly, the energy dissipation assembly, the reset assembly and the monitoring assembly are included. The fixed assembly includes a front pin head and a rear pin head. The energy dissipation assembly includes a cylinder, a piston arranged in the cylinder, a piston rod connected to the piston, and a pressure testing device arranged in the cylinder. The reset assembly includes a ring spring sleeve rod, a front part of the ring spring sleeve rod is fixedly connected to a rear part of the piston rod, a ring spring sleeve is arranged on an outer side of the ring spring sleeve rod, a front part of the ring spring sleeve is sleeved on an outer side of a rear part of the cylinder and is fixedly connected to the cylinder, a rear part of the ring spring sleeve rod extends out of 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 ring is arranged in the ring spring sleeve close to the annular spring. The monitoring assembly includes an extension pipe, a front part of the extension pipe is connected to the front pin head, a rear part of the extension pipe is connected to a front part of the cylinder, and a distance detection device for detecting a displacement distance of a front end of the piston rod is arranged in the extension pipe. First and second ring spring pad blocks are respectively arranged on front and rear sides in the ring spring sleeve, a through hole for passing through the ring spring sleeve rod is arranged in a middle part of each of the first and second ring spring pad blocks, the annular spring is arranged between the first and second ring spring pad blocks, and the force ring is arranged on a front side of the first ring spring pad block. A first fixing nut is threadedly connected to the front part of the ring spring sleeve rod, the first fixing nut is arranged on the front side of the first ring spring pad block, and an outer diameter of the first fixing nut is greater than a diameter of the through hole. A sleeve stop ring is arranged in the ring spring sleeve on a rear side of the second ring spring pad block, a second fixing nut is threadedly connected to the rear part of the ring spring sleeve rod, the second fixing nut is arranged on a rear side of the second ring spring pad block, and an outer diameter of the second fixing nut is greater than the diameter of the through hole. A first annular limiting groove is arranged on a rear side of the first ring spring pad block, a second annular limiting groove is arranged on a front side of the second ring spring pad block, and two ends of the annular spring are respectively located in the first and second annular limiting grooves. The annular spring includes an inner spring and an outer spring sleeved on an outer side of the inner spring.

2. The ring spring self-centering viscous damper with monitoring function according to claim 1, characterized in that, Sealing components are arranged on both sides of an inner part of the cylinder, the sealing components include baffles, bushings and cylinder stop rings arranged in sequence from inside to outside, a first through hole is arranged in a middle part of each baffle, a second through hole is arranged in a middle part of each bushing, a first sealing groove is arranged on an outer surface of each bushing, a first sealing ring is arranged in the first sealing groove, a second sealing groove is arranged on an inner wall of the second through hole, and a second sealing ring is arranged in the second sealing groove.

3. The ring spring self-centering viscous damper with monitoring function according to claim 1, characterized in that, A positioning sleeve ring is arranged on an inner side of the ring spring sleeve, a front side surface of the positioning sleeve ring abuts against a rear end surface of the cylinder, and the force ring is arranged between the positioning sleeve ring and the first ring spring pad block.

4. The ring spring self-centering viscous damper with monitoring function according to claim 1, characterized in that, The distance detection device adopts a wire displacement meter, the front part of the wire displacement meter is fixed in the inner wall of the extension pipe, and the rear part of the wire displacement meter is fixed on the front end of the piston rod.

5. The ring spring self-centering viscous damper with monitoring function according to claim 1, characterized in that, The pressure testing device adopts a pressure sensor.

6. A ring spring self-centering viscous damper with a monitoring function according to claim 5, characterized in that, The monitoring assembly comprises a control box, the control box is arranged outside the oil cylinder, a control board is arranged in the control box, a data storage chip is arranged on the control board, the force ring, the distance detection device and the pressure testing device are electrically connected with the control board, and the control board is further connected with a wireless signal transceiver.

7. The ring spring self-centering viscous damper with monitoring function according to claim 1, characterized in that, The oil cylinder is filled with damping liquid.

8. A ring spring self-centering viscous damper with monitoring function according to any one of claims 1-7, characterized in that, The occurrence of an earthquake is judged by calculating the monitoring data of the pressure testing device and the distance detection device; And the accuracy of the judgment result is evaluated through the monitoring data of the force ring.

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