Damper health monitoring device
By converting the linear reciprocating motion of the damper into unidirectional rotational motion through a purely mechanical structure, the problems of high cost and low stability of existing damper testing devices are solved, and stable and reliable damper health monitoring is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YINGLIANG CONSTR TECH CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-24
Smart Images
Figure CN224552659U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of damper monitoring technology, specifically to a damper health monitoring device. Background Technology
[0002] With the development of modern society, building structures must not only ensure the safety of the main structure and reduce casualties, but also minimize economic losses from earthquakes and ensure rapid restoration of functionality after an earthquake. Therefore, the demand for disaster prevention and mitigation is increasing. Currently, more and more buildings are using energy dissipation and vibration reduction technologies, requiring regular and emergency inspections. However, multiple energy dissipation components (dampers) are already installed on various floors of the building structure. If random checks are required, the dampers must be removed and sent to a laboratory for testing. Currently, most building dampers are displacement-type dampers. For displacement-type dampers, the tested specimens are unusable, making post-earthquake damper inspection a costly and time-consuming task.
[0003] To address the aforementioned technical challenges, the existing solution involves installing displacement sensors on the displacement-type damper to monitor the displacement difference between the two ends of the damper in real time. The displacement data is then transmitted to a computer for display. The cumulative deformation data of the damper is converted to obtain the number of turns of the damper at the design displacement amplitude. The ductility margin of the damper is then obtained by subtracting the number of turns from its ductility performance. When the ductility margin of the damper is greater than the ductility requirements of the standard specifications for the damper, and the maximum deformation does not exceed the design deformation value, the damper is considered an inspection-free and maintenance-free damper.
[0004] The existing technology has the following technical defects: The above displacement sensor detection method requires sensors, data acquisition units (controllers), communication modules, power systems, servers / cloud platforms, monitoring software, etc., which makes the hardware cost, software cost, installation and debugging cost, communication cost, and platform maintenance cost high. In addition, the entire system requires a stable and reliable power supply. Once the power is cut off (especially during an earthquake), the system may be paralyzed and unable to record key data. At the same time, the sensors may malfunction, resulting in data loss. Regular maintenance is required, which makes the overall stability low. Utility Model Content
[0005] The purpose of this invention is to provide a damper health monitoring device to solve the problems of high cost of existing damper displacement detection devices, the need for a stable and reliable power supply for the entire system, the possibility of system failure and inability to record key data once the power is cut off, the possibility of sensor failure leading to data loss, the need for regular maintenance, and the overall low stability.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A damper health monitoring device includes a mounting box and a mounting housing, wherein the mounting box is slidably mounted inside the mounting housing, and the sliding direction of the mounting box is parallel to the reciprocating motion direction of the displacement damper;
[0008] The mounting box is rotatably mounted with a rotating rod. The rotating rod is fixedly sleeved with a first gear and a second gear along the axial direction. A first one-way rotating display mechanism and a second one-way rotating display mechanism are symmetrically arranged on both sides of the second gear. A first transmission mechanism is arranged between the second gear and the first one-way rotating display mechanism, and a second transmission mechanism is arranged between the second gear and the second one-way rotating display mechanism.
[0009] When the second gear rotates clockwise, the second gear causes the first unidirectional rotating display mechanism to rotate in one direction through the first transmission mechanism. When the second gear rotates counterclockwise, the second gear causes the second unidirectional rotating display mechanism to rotate in one direction through the second transmission mechanism. The two unidirectional rotating display mechanisms rotate in opposite directions.
[0010] The mounting box is fixedly equipped with a rack that meshes with the first gear, and the length direction of the rack is parallel to the reciprocating motion direction of the displacement damper.
[0011] Furthermore, the first transmission mechanism and the second transmission mechanism have the same structure. The first transmission mechanism includes a third gear, which is rotatably mounted on the mounting box and meshes with the second gear for transmission.
[0012] Furthermore, the first unidirectional rotating display mechanism and the second unidirectional rotating display mechanism have the same structure. The first unidirectional rotating display mechanism includes a unidirectional rotating component and a pointer display component. A mounting groove is provided on one side of the third gear. The unidirectional rotating component is installed in the mounting groove. The pointer display component is installed on the unidirectional rotating component and is used to display the rotation angle of the unidirectional rotating component.
[0013] Furthermore, the unidirectional rotating assembly includes a ratchet and a pawl. A first rotating shaft capable of unidirectional rotation is rotatably mounted on the mounting box. The first rotating shaft is coaxially arranged with the third gear. The ratchet is fixedly mounted on the first rotating shaft. One end of the pawl is rotatably mounted on the inner wall of the mounting groove, and the other end is in contact with the ratchet.
[0014] Furthermore, an elastic element is provided between the pawl and the side wall of the mounting groove. One end of the elastic element is connected to the side wall of the mounting groove, and the other end is connected to one side of the pawl. The elastic element causes the pawl to tend to move closer to the ratchet.
[0015] Furthermore, the pointer display component includes a pointer body and a second rotating shaft, the second rotating shaft being rotatably mounted on the mounting box, the pointer body being fixedly fitted onto the second rotating shaft, and the pointer body being located outside the mounting box;
[0016] The axis of the second rotating shaft is parallel to the axis of the first rotating shaft, and a transmission ratio scaling component is provided between the second rotating shaft and the first rotating shaft.
[0017] Furthermore, the outer wall of the mounting box is provided with a scale mark that cooperates with the pointer body, and a number mark is provided on the outer or inner side of the scale mark.
[0018] Furthermore, a transparent protective cover is provided on the outer wall of the mounting box outside the pointer body, and an observation window is provided on the mounting box at the position corresponding to the transparent protective cover.
[0019] Furthermore, the transmission ratio scaling component includes a fourth gear and a fifth gear. The fourth gear is fixedly mounted on a first rotating shaft, and the fifth gear is fixedly mounted on a second rotating shaft. The fourth gear and the fifth gear mesh and transmit power. The transmission ratio between the fourth gear and the fifth gear is n:1, where n is a number greater than 1.
[0020] Furthermore, at least one intermediate transmission unit is provided between the fourth gear and the fifth gear. The intermediate transmission unit includes a rotating shaft, a large gear, and a small gear. The rotating shaft is rotatably mounted on the mounting box. The large gear and the small gear are both fixedly mounted on the rotating shaft. The axis of the rotating shaft is parallel to the axis of the first rotating shaft. The large gear meshes with the fourth gear for transmission, and the small gear meshes with the large gear or the fifth gear for transmission.
[0021] The beneficial effects of this utility model are:
[0022] This application provides a damper health monitoring device. By fixing the monitoring device to the building structure, during an earthquake, the building structure drives the mounting box and mounting housing to perform relative reciprocating motion. The frequency, amplitude, and direction of the relative reciprocating motion are the same as those of the displacement damper, thereby driving the rack to reciprocate along the reciprocating motion direction of the displacement damper. The rack meshes with the first gear, causing the first gear, the rotating rod, and the second gear to rotate synchronously in clockwise and counterclockwise directions. This causes two unidirectional rotating display mechanisms to rotate in opposite directions, thus converting the linear reciprocating motion of the displacement damper into two unidirectional rotating motions. By accumulating the rotational motions of the two unidirectional rotating display mechanisms, the cumulative displacement deformation data of the damper is obtained.
[0023] The monitoring device of this application consists of mechanical parts such as gears and racks (pointers, ratchet), without complex electronic components. It is simple and reliable, and is not easily damaged by external interference (such as lightning or strong magnetic fields). It is driven entirely by the relative motion of the damper and does not require a power supply. This fundamentally solves the problem of data loss caused by power failure in sensor-type detection devices.
[0024] The monitoring device of this application requires virtually no maintenance during its lifespan. The cumulative displacement value of the damper is displayed intuitively through the pointer itself, and staff can read it directly on-site without additional tools. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the installation structure of a damper health monitoring device according to the present invention;
[0026] Figure 2 This is a schematic diagram of the structure of a damper health monitoring device according to the present invention;
[0027] Figure 3 This is a structural diagram of the mounting box and mounting housing in a damper health monitoring device according to the present invention.
[0028] Figure 4 This is a schematic diagram of the connection structure between the mounting box and the mounting housing in a damper health monitoring device according to this utility model;
[0029] Figure 5 This is a schematic diagram of the internal structure of the mounting box in the damper health monitoring device of this utility model;
[0030] Figure 6 This is a schematic diagram of the structure of the first unidirectional rotating display mechanism and the second unidirectional rotating display mechanism in this utility model;
[0031] Figure 7 This is a schematic diagram of the unidirectional rotating component in this utility model;
[0032] Figure 8 for Figure 7 Enlarged structural diagram at point B;
[0033] Figure 9 This is a schematic diagram of the connecting cylinder in this utility model;
[0034] Figure 10 This is a schematic diagram of the transmission ratio scaling component in this utility model.
[0035] in,
[0036] 1. Displacement damper; 2. Mounting box; 3. Rotating rod; 4. First gear; 5. Rack; 6. Second gear; 7. Third gear; 8. Fixing plate; 9. Connecting cylinder; 10. Mounting groove; 11. First rotating shaft; 12. Ratchet; 13. Pawl; 14. Elastic element; 15. Fourth gear; 16. Fifth gear; 17. Large gear; 18. Small gear; 19. Rotating shaft; 20. Pointer body; 21. Second rotating shaft; 22. Scale marking; 23. Upper pier; 24. Lower pier; 25. First connecting part; 26. Second connecting part; 27. Mounting box; 28. First elongated through groove; 29. Second elongated through groove. Detailed Implementation
[0037] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.
[0038] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0039] In the relevant prior art, the displacement damper 1 is horizontally set, and its two ends are connected to the upper pier 23 and the lower pier 24 of the building structure, respectively. When an earthquake occurs, the upper pier 23 and the lower pier 24 cause the displacement damper 1 to reciprocate in the horizontal direction, thereby achieving the effect of energy dissipation.
[0040] This embodiment proposes a damper health monitoring device, such as... Figures 1 to 10As shown, the monitoring device of this application is fixedly installed on the main body of the building structure and located on one side of the displacement damper 1. The monitoring device includes a mounting box 2 and a mounting housing 27. The mounting box 2 is slidably installed inside the mounting housing 27 so that the two can slide relative to each other. The relative sliding direction of the mounting box 2 and the mounting housing 27 is parallel to the reciprocating motion direction of the displacement damper 1. In this embodiment, the width direction of the mounting box 2 / mounting housing 27 is parallel to the reciprocating motion direction of the displacement damper 1. A first elongated through groove 28 is opened on the top of the mounting housing 27 along the width direction, and a second elongated through groove 29 is opened in the middle of the side wall of the mounting housing 27 along the width direction. A first connecting groove is fixedly provided on the top of the mounting box 2. The first connecting part 25 passes through the first elongated through groove 28 and is used to fix it to the upper pier 23. The first connecting part 25 can slide in the first elongated through groove 28. Specifically, the first connecting part 25 can be welded to the embedded part of the upper pier 23 or fixedly installed on the upper pier 23 by expansion bolts. The bottom of the mounting box 27 is fixedly provided with a second connecting part 26, which is used to fix it to the lower pier 24. During an earthquake, the upper pier 23 and the lower pier 24 undergo inter-story displacement deformation, which drives the relative ends of the displacement damper 1 to reciprocate, and at the same time drives the mounting box 2 and the mounting box 27 to reciprocate relative to each other. A rotating rod 3 is rotatably mounted on the mounting box 2 via a bearing. One end of the rotating rod 3 protrudes outside the mounting box 2 and passes through the second elongated through groove 29, located outside the mounting box 27. The rotating rod 3 can slide within the second elongated through groove 29. A first gear 4 and a second gear 6 are fixedly sleeved on the rotating rod 3 at intervals along the axial direction. The first gear 4 is located outside the mounting box 27, and the second gear 6 is located inside the mounting box 2. A first one-way rotating display mechanism and a second one-way rotating display mechanism are symmetrically arranged on the upper and lower sides of the second gear 6. A first transmission mechanism is provided between the second gear 6 and the first one-way rotating display mechanism, and a second transmission mechanism is provided between the second gear 6 and the second one-way rotating display mechanism.
[0041] When the second gear 6 rotates clockwise, it causes the first unidirectional rotating display mechanism to rotate in one direction via the first transmission mechanism. When the second gear 6 rotates counterclockwise, it causes the second unidirectional rotating display mechanism to rotate in one direction via the second transmission mechanism. The rotation directions of the two unidirectional rotating display mechanisms are opposite. A rack 5 that meshes with the first gear 4 is fixedly provided on the outer wall of the mounting box 27. The length direction of the rack 5 is parallel to the width direction of the mounting box 27.
[0042] In this embodiment, during an earthquake, the upper pier 23 and the lower pier 24 undergo inter-story displacement deformation, which drives the mounting box 2 and the mounting housing 27 to reciprocate relative to each other. This, in turn, drives the first gear 4 and the rack 5 to reciprocate relative to each other in the horizontal direction. The rack 5 meshes with the first gear 4, causing the first gear 4, the rotating rod 3, and the second gear 6 to reciprocate synchronously in clockwise and counterclockwise directions. This causes the two unidirectional rotating display mechanisms to rotate in opposite directions, thereby converting the linear reciprocating motion of the displacement damper 1 into two unidirectional rotating motions. By accumulating the rotational motions of the two unidirectional rotating display mechanisms, the cumulative displacement deformation data of the damper is obtained.
[0043] The first transmission mechanism and the second transmission mechanism have the same structure and are symmetrically arranged on the upper and lower sides of the second gear 6. The first transmission mechanism includes a third gear 7, which is rotatably mounted on the mounting box 2 and meshes with the second gear 6 for transmission. In this embodiment, a fixing plate 8 is fixedly provided inside the mounting box 2, and a connecting cylinder 9 is coaxially fixedly provided on one side of the third gear 7. The connecting cylinder 9 is hollow inside, and the end of the connecting cylinder 9 away from the third gear 7 is rotatably mounted on the fixing plate 8 through a bearing.
[0044] The first and second unidirectional rotating display mechanisms have the same structure. The first unidirectional rotating display mechanism includes a unidirectional rotating component and a pointer display component. A mounting groove 10 is provided on the side of the third gear 7 facing away from the connecting cylinder 9. The unidirectional rotating component is installed in the mounting groove 10, and the pointer display component is installed on the unidirectional rotating component and used to display the rotation angle of the unidirectional rotating component. In this embodiment, the mounting groove 10 is shaped like a comma, and it consists of a circular groove located in the middle of the third gear 7 and an irregularly shaped groove located on the edge of the third gear 7.
[0045] The unidirectional rotating assembly includes a ratchet 12 and a pawl 13. A first rotating shaft 11 capable of unidirectional rotation is rotatably mounted on the mounting box 2. In this embodiment, one end of the first rotating shaft 11 passes through the third gear 7, the connecting cylinder 9, and the fixing plate 8 in sequence, and is rotatably mounted on the inner wall of the mounting box 2 via a one-way bearing. The first rotating shaft 11 is coaxially arranged with the third gear 7. The ratchet 12 is located in a circular groove and is fixedly fitted on the first rotating shaft 11. One end of the pawl 13 is rotatably mounted on the inner wall of the irregular groove, and the other end contacts the ratchet 12.
[0046] An elastic element 14 is provided between the pawl 13 and the side wall of the mounting groove 10. One end of the elastic element 14 is fixedly connected to the side wall of the mounting groove 10, and the other end is fixedly connected to one side of the pawl 13. The elastic element 14 causes the pawl 13 to tend to move closer to the ratchet 12. In this embodiment, the elastic element 14 is a spring. One side of the pawl 13 is in contact with the side wall of the irregular groove, and one end of the spring is fixedly connected to the other side of the pawl 13. The spring is always in a compressed state, and the spring force keeps the pawl 13 in contact with the ratchet 12.
[0047] In the above embodiments, such as Figure 6 As shown, taking the structural elements of the first unidirectional rotating display mechanism and the first transmission mechanism as an example ( Figure 6 (Under the third gear 7), the first rotating shaft 11 can only rotate counterclockwise. When the second gear 6 rotates clockwise, it drives the third gear 7 to rotate counterclockwise. The third gear 7 drives the pawl 13 to rotate counterclockwise around the ratchet 12. At this time, the pawl of the pawl 13 inserts into the tooth groove of the ratchet 12 and pushes the ratchet 12 to rotate counterclockwise synchronously. When the second gear 6 rotates counterclockwise, it drives the third gear 7 to rotate clockwise. The third gear 7 drives the pawl 13 to rotate clockwise around the ratchet 12. At this time, the pawl 13 slides on the back of the teeth of the ratchet 12, and the ratchet 12 stops rotating. This structural design uses the reciprocating motion of the pawl 13 to realize the unidirectional intermittent rotation of the ratchet 12.
[0048] In the above embodiments, since the structures of the second unidirectional rotating display mechanism and the second transmission mechanism are the same as those of the first unidirectional rotating display mechanism and the first transmission mechanism and are symmetrically arranged, their structural principles are the same as those analyzed above. It should be understood that in the structural elements of the second unidirectional rotating display mechanism and the second transmission mechanism ( Figure 6 (On the upper side of the third gear 7), the first rotating shaft 11 can only rotate clockwise. When the second gear 6 rotates clockwise, it drives the third gear 7 of the second unidirectional rotating display mechanism to rotate counterclockwise synchronously. At this time, the third gear 7 drives the pawl 13 to rotate counterclockwise around the ratchet 12. The pawl 13 slides on the back of the ratchet 12 teeth, and the ratchet 12 does not rotate. When the second gear 6 rotates counterclockwise, it drives the third gear 7 to rotate clockwise. The third gear 7 drives the pawl 13 to rotate clockwise around the ratchet 12. The pawl of the pawl 13 inserts into the tooth groove of the ratchet 12 and pushes the ratchet 12 to rotate clockwise synchronously. This structural design converts the reciprocating rotation of the third gear 7 into the unidirectional rotational motion of the two ratchet 12s, and the two ratchet 12s rotate in opposite directions and alternately intermittently.
[0049] The pointer display assembly includes a pointer body 20 and a second rotating shaft 21. The second rotating shaft 21 is rotatably mounted on the inner wall of the mounting box 2 via bearings, with one end of the second rotating shaft 21 protruding outside the mounting box 2. The pointer body 20 is fixedly mounted on the second rotating shaft 21 and is located outside the mounting box 2. The axis of the second rotating shaft 21 is parallel to the axis of the first rotating shaft 11, and a transmission ratio scaling component is provided between the second rotating shaft 21 and the first rotating shaft 11.
[0050] The outer wall of the mounting box 2 is provided with a scale mark 22 that cooperates with the pointer body 20. The outer or inner side of the scale mark 22 is provided with a number mark (not shown in the figure), which makes it easy for the staff to read the reading indicated by the pointer body 20 after rotation.
[0051] A transparent protective cover (not shown in the figure) is provided on the outer side wall of the mounting box 2 on the outside of the pointer body 20. An observation window is provided on the mounting box 27 at the position corresponding to the transparent protective cover, so that the staff can read the reading of the pointer body 20. It should be understood that the transparent protective cover also covers the scale mark 22 and the number mark, protecting the pointer body 20 and preventing the scale mark 22 and the number mark from becoming blurred during long-term use.
[0052] The transmission ratio scaling component includes a fourth gear 15 and a fifth gear 16. The fourth gear 15 is fixedly mounted on the first rotating shaft 11, and the fifth gear 16 is fixedly mounted on the second rotating shaft 21. The fourth gear 15 and the fifth gear 16 mesh and transmit power. The transmission ratio between the fourth gear 15 and the fifth gear 16 is n:1, where n is a number greater than 1.
[0053] At least one intermediate transmission unit is provided between the fourth gear 15 and the fifth gear 16. The intermediate transmission unit includes a rotating shaft 19, a large gear 17 and a small gear 18. The rotating shaft 19 is rotatably mounted on the mounting box 2. The large gear 17 and the small gear 18 are both fixedly mounted on the rotating shaft 19. The axis of the rotating shaft 19 is parallel to the axis of the first rotating shaft 11. The large gear 17 meshes with the fourth gear 15 for transmission. The small gear 18 meshes with the large gear 17 or the fifth gear 16 for transmission. In this embodiment, if there is one intermediate transmission unit, the fourth gear 15 meshes with the large gear 17 and the transmission ratio is m:1, where m is a number greater than 1; the small gear 18 meshes with the fifth gear 16 and the transmission ratio is 1;o, where o is a number greater than 1. If there are multiple intermediate transmission units, the small gear 18 of the first intermediate transmission unit meshes with the large gear 17 of the second intermediate transmission unit and the transmission ratio between them is p:1, where p is a number greater than 1. The small gear 18 of the second intermediate transmission unit then meshes with the large gear 17 of the third intermediate transmission unit, and so on, until the small gear 18 of the last intermediate transmission unit meshes with the fifth gear 16. The purpose of this structural design is to ensure that, within a limited space, the gear transmission ratio allows the pointer body 20 to rotate only a small angle when the displacement damper 1 reciprocates a long distance. This allows a preset algorithm to ensure that when the pointer body 20 rotates one revolution, the displacement damper 1 reaches its design displacement amplitude. Therefore, when inspecting the damper, the operator simply adds the rotation angles of the two pointer bodies 20 and divides this angle by 360° to obtain a ratio. This ratio is then multiplied by the damper's design displacement amplitude to obtain the damper's cumulative deformation data. This cumulative deformation data is then converted to the number of revolutions of the damper at the design displacement amplitude. Finally, the damper's ductility performance is subtracted from the number of revolutions to obtain the damper's ductility margin. When the damper's ductility margin exceeds the standard specifications for damper ductility, and the maximum deformation does not exceed the design deformation value, the damper is considered an inspection-free and maintenance-free damper.
[0054] Working principle:
[0055] When an earthquake occurs, the displacement damper 1 is subjected to pressure or tension, and its two ends reciprocate. At the same time, the mounting box 2 and mounting housing 27 reciprocate synchronously with the displacement damper 1, causing the rack 5 to reciprocate. The rack 5 drives the first gear 4, the rotating rod 3 and the second gear 6 to reciprocate. Under the combined action of the transmission mechanism, the unidirectional rotation component, the transmission ratio scaling component and the intermediate transmission unit, the two pointer bodies 20 both rotate in one direction and in opposite directions. When testing the damper, the staff opens the damper maintenance door, reads the readings of the two pointer bodies 20 and adds them together to obtain the cumulative deformation data of the damper.
[0056] This application uses a purely mechanical structure to monitor the cumulative deformation of the damper, which is simple and reliable. It is mainly composed of mechanical parts such as gears, racks 5, ratchet 12, and pointer body 20. There are no complex electronic components. It is driven entirely by the relative motion of the damper itself, without the need for a power supply. It requires virtually no maintenance during its lifespan. During testing, staff can directly read the reading of pointer body 20 on-site without any other tools, which is convenient, fast, and inexpensive.
[0057] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.
Claims
1. A damper health monitoring device, installed on the main body of a building structure and located on one side of a displacement damper, characterized in that: It includes a mounting box and a mounting housing, wherein the mounting box is slidably installed inside the mounting housing, and the sliding direction of the mounting box is parallel to the reciprocating motion direction of the displacement damper; The mounting box is rotatably mounted with a rotating rod. The rotating rod is fixedly sleeved with a first gear and a second gear along the axial direction. A first one-way rotating display mechanism and a second one-way rotating display mechanism are symmetrically arranged on both sides of the second gear. A first transmission mechanism is arranged between the second gear and the first one-way rotating display mechanism, and a second transmission mechanism is arranged between the second gear and the second one-way rotating display mechanism. When the second gear rotates clockwise, the second gear causes the first unidirectional rotating display mechanism to rotate in one direction through the first transmission mechanism. When the second gear rotates counterclockwise, the second gear causes the second unidirectional rotating display mechanism to rotate in one direction through the second transmission mechanism. The two unidirectional rotating display mechanisms rotate in opposite directions. The mounting box is fixedly equipped with a rack that meshes with the first gear, and the length direction of the rack is parallel to the reciprocating motion direction of the displacement damper.
2. The damper health monitoring device according to claim 1, characterized in that: The first transmission mechanism and the second transmission mechanism have the same structure. The first transmission mechanism includes a third gear, which is rotatably mounted on the mounting box and meshes with the second gear for transmission.
3. The damper health monitoring device according to claim 2, characterized in that: The first unidirectional rotating display mechanism and the second unidirectional rotating display mechanism have the same structure. The first unidirectional rotating display mechanism includes a unidirectional rotating component and a pointer display component. A mounting groove is provided on one side of the third gear. The unidirectional rotating component is installed in the mounting groove. The pointer display component is installed on the unidirectional rotating component and is used to display the rotation angle of the unidirectional rotating component.
4. The damper health monitoring device according to claim 3, characterized in that: The unidirectional rotating assembly includes a ratchet and a pawl. A first rotating shaft capable of unidirectional rotation is rotatably mounted on the mounting box. The first rotating shaft is coaxially arranged with a third gear. The ratchet is fixedly mounted on the first rotating shaft. One end of the pawl is rotatably mounted on the inner wall of the mounting groove, and the other end is in contact with the ratchet.
5. The damper health monitoring device according to claim 4, characterized in that: An elastic element is provided between the pawl and the side wall of the mounting groove. One end of the elastic element is connected to the side wall of the mounting groove, and the other end is connected to one side of the pawl. The elastic element causes the pawl to tend to move closer to the ratchet.
6. The damper health monitoring device according to claim 3, characterized in that: The pointer display component includes a pointer body and a second rotating shaft. The second rotating shaft is rotatably mounted on the mounting box, and the pointer body is fixedly fitted onto the second rotating shaft. The pointer body is located outside the mounting box. The axis of the second rotating shaft is parallel to the axis of the first rotating shaft, and a transmission ratio scaling component is provided between the second rotating shaft and the first rotating shaft.
7. The damper health monitoring device according to claim 6, characterized in that: The outer wall of the mounting box is provided with scale markings that cooperate with the pointer body, and the outer or inner side of the scale markings is provided with numerical markings.
8. A damper health monitoring device according to claim 6, characterized in that: The outer wall of the mounting box is provided with a transparent protective cover on the outside of the pointer body, and the mounting box is provided with an observation window at the position corresponding to the transparent protective cover.
9. A damper health monitoring device according to claim 6, characterized in that: The transmission ratio scaling component includes a fourth gear and a fifth gear. The fourth gear is fixedly mounted on a first rotating shaft, and the fifth gear is fixedly mounted on a second rotating shaft. The fourth gear and the fifth gear mesh and transmit power. The transmission ratio between the fourth gear and the fifth gear is n:1, where n is a number greater than 1.
10. A damper health monitoring device according to claim 9, characterized in that: At least one intermediate transmission unit is provided between the fourth gear and the fifth gear. The intermediate transmission unit includes a rotating shaft, a large gear and a small gear. The rotating shaft is rotatably mounted on the mounting box. The large gear and the small gear are both fixedly mounted on the rotating shaft. The axis of the rotating shaft is parallel to the axis of the first rotating shaft. The large gear meshes with the fourth gear for transmission, and the small gear meshes with the large gear or the fifth gear for transmission.