Three-dimensional mobile deformation monitoring device
By designing a three-dimensional motion deformation monitoring device, the problem of three-dimensional deformation monitoring of seismic isolation and damping devices in engineering applications has been solved, realizing real-time and accurate monitoring of seismic isolation and damping devices, and is suitable for detecting seismic isolation bearings and inter-story drift angles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-23
Smart Images
Figure CN224398642U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spatial deformation and displacement monitoring technology for building structures, and more specifically, to a three-dimensional movement deformation monitoring device. Background Technology
[0002] Seismic isolation devices are support structures installed to meet seismic isolation requirements. They involve adding an isolation layer between the superstructure and the foundation, and installing seismic isolation rubber bearings to provide a flexible connection with the ground. This technology can offset approximately 80% of the energy from an earthquake. Examples include laminated rubber bearings (also known as seismic isolation rubber bearings and sandwich rubber pads). These are structural components with relatively low horizontal stiffness but high vertical stiffness, capable of withstanding large horizontal deformations and serving as part of the load-bearing system.
[0003] To understand the performance of bearings and their damage after earthquakes during long-term use, it is necessary to monitor the stress and deformation of the bearings. Currently, research on bearing deformation is mainly conducted in laboratories, where displacement sensors and other measuring devices are typically installed on the outside of the bearings. However, these devices cannot be installed and used with the bearings in engineering applications. Once the bearings are installed on-site, monitoring their deformation remains challenging. Utility Model Content
[0004] The purpose of this invention is to provide a three-dimensional moving deformation monitoring device that can move with the structure to be monitored, thereby enabling real-time and accurate monitoring of the three-dimensional deformation of the structure to be monitored.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] This utility model provides a three-dimensional motion deformation monitoring device, which includes a first connecting seat, a rotating connecting component, a telescopic component, a second connecting seat, and a monitoring component;
[0007] The first connecting seat and the second connecting seat are spaced apart. The rotating connecting component is connected to the first connecting seat, and the telescopic component is connected to the second connecting seat. The telescopic component is connected to the second connecting seat through the rotating connecting component.
[0008] The monitoring component is used to monitor the amount of expansion and contraction of the telescopic component, as well as the rotation angle of the telescopic component relative to the rotating connection component.
[0009] The first connecting seat is used to connect to one end of the structure to be monitored that has a relative displacement or a deformed end, and the second connecting seat is used to connect to the other end of the structure to be monitored that has a relative displacement or a deformed end.
[0010] In an optional embodiment, the telescopic assembly includes a sleeve rod and a movable rod; the sleeve rod is sleeved on the movable rod, and the movable rod and the sleeve rod are slidably connected; the sleeve rod is connected to a rotating connection assembly, and the movable rod is connected to a second connecting seat.
[0011] In an alternative embodiment, the movable rod is hinged to the second connecting seat.
[0012] In an optional embodiment, the second connecting seat is provided with a ball-and-socket connector, and the end of the movable rod is provided with a ball-head connector that is hinged to the ball-and-socket connector.
[0013] In an optional embodiment, a linear bearing that is movably connected to the movable rod is provided inside the sleeve.
[0014] In an optional implementation, the monitoring component includes a displacement sensor connected to the sleeve, the displacement sensor being used to monitor the amount of extension or retraction of the movable rod relative to the sleeve.
[0015] In an optional embodiment, the rotary connection assembly includes a cross joint, a first rotary joint, and a second rotary joint;
[0016] The cross-shaped connecting joint is equipped with a first rotating connecting part and a second rotating connecting part; the first rotating joint is rotatably connected to the first rotating connecting part, and the second rotating joint is rotatably connected to the second rotating connecting part, and the axis of rotation of the first rotating joint relative to the first rotating connecting part is a first axis, and the axis of rotation of the second rotating joint relative to the second rotating connecting part is a second axis, and the first axis and the second axis are perpendicular; the first rotating joint is connected to the first connecting seat, and the second rotating joint is connected to the telescopic assembly;
[0017] The monitoring component includes a first angle sensor, which is used to monitor the rotation angle of the cross joint relative to the first rotating joint and the rotation angle of the second rotating joint relative to the cross joint.
[0018] In an optional embodiment, the rotating connection assembly includes a rotating connection platform and a movable stage;
[0019] The rotating connecting platform is rotatably connected to the first connecting seat; the movable platform is rotatably connected to the rotating connecting platform, and the telescopic component is connected to the movable platform;
[0020] The rotation axis of the rotating connecting platform relative to the first connecting seat is the third axis, and the rotation axis of the movable table relative to the rotating connecting platform is the fourth axis. The third axis and the fourth axis are perpendicular.
[0021] The monitoring components include a second angle sensor and a third angle sensor. The second angle sensor is used to monitor the rotation of the rotating connecting platform relative to the first connecting seat, and the third angle sensor is used to monitor the rotation of the movable stage relative to the rotating connecting platform.
[0022] The beneficial effects of the three-dimensional motion deformation monitoring device provided in this embodiment of the utility model include:
[0023] The three-dimensional motion deformation monitoring device includes a first connecting seat, a rotating connecting assembly, a telescopic assembly, a second connecting seat, and a monitoring component. The first and second connecting seats are spaced apart. The rotating connecting assembly is connected to the first connecting seat, and the telescopic assembly is connected to the second connecting seat, with the telescopic assembly also connected to the second connecting seat via the rotating connecting assembly. The monitoring component monitors the telescopic assembly's expansion and contraction, as well as its rotation angle relative to the rotating connecting assembly. The first connecting seat connects to one end of the structure under test that experiences relative displacement or deformation, and the second connecting seat connects to the other end of the structure under test that experiences relative displacement or deformation. This three-dimensional motion deformation monitoring device can move with the structure under test, thereby enabling real-time and accurate monitoring of the vertical and lateral deformations of the structure, and ultimately, real-time monitoring of the three-dimensional deformation of the structure. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the three-dimensional motion deformation monitoring device provided in this embodiment;
[0026] Figure 2 This is an exploded view of the three-dimensional motion deformation monitoring device provided in this embodiment;
[0027] Figure 3 This is a schematic diagram of the installation of the three-dimensional motion deformation monitoring device provided in this embodiment;
[0028] Figure 4 This is a schematic diagram of the structure of the ball joint connector and the ball head connector provided in this embodiment;
[0029] Figure 5 This is an exploded view of the rotating connection assembly provided in this embodiment;
[0030] Figure 6 This is a schematic diagram of the structure of a rotating connection assembly provided in other embodiments of the present invention;
[0031] Figure 7 This embodiment provides a spatial coordinate system with the fixed point of the rotating connection component as the origin.
[0032] Icons: 100-Three-dimensional moving deformation monitoring device; 110-First connecting seat; 120-Rotary connecting assembly; 130-Telescopic assembly; 140-Second connecting seat; 200-Isolation layer; 300-Isolation and damping device; 131-Sleeve rod; 132-Moving rod; 141-Ball-and-socket connector; 133-Ball head connector; 121-Cross connecting joint; 122-First rotating joint; 123-Second rotating joint; 124-First rotating connection part; 125-Second rotating connection part; 126-Rotary connecting platform; 127-Moving platform. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0036] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0037] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0039] The seismic isolation device 300 refers to the support device installed on the structure to achieve seismic isolation requirements. It involves adding a seismic isolation layer 200 between the superstructure and the foundation, and installing seismic isolation rubber bearings to provide a flexible connection with the ground. Through this technology, approximately 80% of the earthquake energy can be dissipated. Examples include laminated rubber bearings (or seismic isolation rubber bearings and sandwich rubber pads). It is a structural component with relatively low horizontal stiffness but high vertical stiffness, capable of withstanding large horizontal deformations, and can be used as part of the load-bearing system.
[0040] Under normal circumstances, seismic isolation rubber bearings (hereinafter referred to as "bearings") are subjected to vertical compressive forces. When an earthquake occurs, due to ground motion, the bearings are simultaneously subjected to vertical compressive or tensile forces and horizontal shear forces. At this time, in addition to vertical compression or tensile deformation, the bearings also undergo horizontal shear deformation. Generally, the service life of the bearings is the same as that of the building structure. In order to understand the performance of the bearings and their damage after earthquakes during long-term use, it is necessary to monitor the stress and deformation of the bearings. Currently, research on bearing deformation is mainly conducted in the laboratory. In the laboratory, displacement sensors and other measuring devices are usually installed on the outside of the bearings. However, in engineering applications, these devices cannot be installed and used with the bearings. Once the bearings are installed on the work site, monitoring their deformation still faces difficulties.
[0041] For the reasons mentioned above, please refer to Figures 1-3 This embodiment provides a three-dimensional motion deformation monitoring device 100, which includes a first connecting seat 110, a rotating connecting assembly 120, a telescopic assembly 130, a second connecting seat 140, and a monitoring assembly.
[0042] The first connecting seat 110 and the second connecting seat 140 are spaced apart. The rotating connecting component 120 is connected to the first connecting seat 110, and the telescopic component 130 is connected to the second connecting seat 140. The telescopic component 130 is connected to the second connecting seat 140 through the rotating connecting component 120.
[0043] The monitoring component is used to monitor the amount of extension and retraction of the telescopic component 130, as well as the rotation angle of the telescopic component 130 relative to the rotating connection component 120;
[0044] The first connecting seat 110 is used to connect to the lower part of the seismic isolation layer 200, the second connecting seat 140 is used to connect to the upper part of the seismic isolation layer 200, and the seismic isolation layer 200 is equipped with a vibration damping and isolation device 300.
[0045] The working principle of the three-dimensional motion deformation monitoring device 100 is as follows:
[0046] The three-dimensional motion deformation monitoring device 100 includes a first connecting seat 110, a rotating connecting assembly 120, a telescopic assembly 130, a second connecting seat 140, and a monitoring component. The first connecting seat 110 and the second connecting seat 140 are spaced apart. The rotating connecting assembly 120 is connected to the first connecting seat 110, and the telescopic assembly 130 is connected to the second connecting seat 140. The telescopic assembly 130 is connected to the second connecting seat 140 through the rotating connecting assembly 120. The monitoring component is used to monitor the telescopic amount of the telescopic assembly 130 and the rotation angle of the telescopic assembly 130 relative to the rotating connecting assembly 120. The first connecting seat 110 is used to connect to the lower part of the seismic isolation layer 200, and the second connecting seat 140 is used to connect to the upper part of the seismic isolation layer 200. The seismic isolation layer 200 is equipped with a vibration damping and isolation device 300.
[0047] It should be noted that in this embodiment, when installing the three-dimensional moving deformation monitoring device 100, the first connecting seat 110 is used to connect to the lower part of the isolation layer 200, and the second connecting seat 140 is used to connect to the upper part of the isolation layer 200. The purpose is to be able to move with the vibration damping and isolation device 300 in the isolation layer 200.
[0048] Based on this, the connection between the first connecting seat 110 and the lower part of the isolation layer 200 can be achieved by directly connecting the first connecting seat 110 to the lower part of the isolation layer 200, or by connecting the first connecting seat 110 to the lower part of the isolation layer 200 through a portion connected to the vibration damping and isolation device 300, thereby indirectly connecting the first connecting seat 110 to the lower part of the isolation layer 200. Similarly, the connection between the second connecting seat 140 and the upper part of the isolation layer 200 can be achieved by directly connecting the second connecting seat 140 to the upper part of the isolation layer 200, or by connecting the second connecting seat 140 to the upper part of the isolation layer 200 through a portion connected to the vibration damping and isolation device 300, thereby indirectly connecting the second connecting seat 140 to the upper part of the isolation layer 200. That is, as can be seen from the foregoing, the first connecting part and the second connecting part can be directly or indirectly connected to the lower part and the upper part of the isolation layer 200, and both methods can achieve the same movement as the vibration damping and isolation device 300 in the same isolation layer 200.
[0049] Furthermore, as can be seen from the above, the first connecting seat 110 and the second connecting seat 140 of the three-dimensional motion deformation monitoring device 100 are respectively connected to the lower part of the vibration isolation layer 200 and the upper part of the vibration isolation layer 200. Thus, when the upper part and the lower part of the vibration isolation layer 200 move relative to each other and cause the vibration damping and isolation device 300 to deform, the three-dimensional motion deformation monitoring device 100 can be driven to move accordingly, thereby monitoring the amount of deformation generated by the vibration damping and isolation device 300.
[0050] When the vibration damping and isolation device 300 is subjected to vertical tensile and compressive forces as well as horizontal shear forces, it is subjected to horizontal shear deformation in addition to vertical compression or tensile deformation.
[0051] Based on this, the three-dimensional moving deformation monitoring device 100 is equipped with a telescopic component 130 and a rotating connection component 120. The purpose of this is that the telescopic component 130 and the rotating connection component 120 can form both vertical displacement and lateral offset during the monitoring of the force applied to the device. In this way, it can move with the vibration damping and isolation device 300 being measured. Moreover, through this arrangement, the deformation of the vibration damping and isolation device 300 in both the vertical and lateral directions can be monitored.
[0052] In summary, the three-dimensional moving deformation monitoring device 100 can move in tandem with the vibration damping and isolation device 300, thereby enabling real-time and accurate monitoring of the vertical and lateral deformation of the vibration damping and isolation device 300, and thus real-time monitoring of the three-dimensional deformation of the vibration damping and isolation device 300.
[0053] It should be noted that this specification uses the application of the three-dimensional moving deformation monitoring device 100 to seismic isolation bearings and inter-story drift angle monitoring as an example. That is, the structure to be monitored can be the seismic isolation device 300 or the floor to be monitored, but its application is not limited to these two fields. Specifically, in this embodiment, the three-dimensional moving deformation monitoring device 100 is used as an example to monitor the deformation of the seismic isolation device 300. That is, the first connecting seat 110 is used to connect to one end of the structure to be monitored that has relative displacement or deformation (i.e., the lower part of the seismic isolation layer 200), and the second connecting seat 140 is used to connect to the other end of the structure to be monitored that has relative displacement or deformation (i.e., the upper part of the seismic isolation layer 200).
[0054] However, in other embodiments of this utility model, it can also be applied to the monitoring of inter-floor displacement angles, that is, the first connecting seat 110 is used to connect with one end of the structure to be monitored that has relative displacement or deformation (i.e., the upper floor slab of the monitored floor), and the second connecting seat 140 is used to connect with the other end of the structure to be monitored that has relative displacement or deformation (i.e., the lower floor slab of the monitored floor).
[0055] Inter-story drift angle refers to the ratio of the maximum horizontal displacement between floors to the story height Δu / h under wind load or frequent earthquake standard value calculated by elastic method. Δu / h of the i-th floor refers to the maximum value of the displacement difference ΔUi = Ui - Ui-1 between the i-th and i-1-th floors at various points in the floor plane. It is used to ensure the stiffness that high-rise structures should have and is a macroscopic control index for the size of the component cross-section and the stiffness. Its main purpose is to limit the horizontal displacement of the structure under normal service conditions, ensure the stiffness that high-rise structures should have, and avoid excessive displacement that would affect the load-bearing capacity, stability and service requirements of the structure.
[0056] When the three-dimensional moving deformation monitoring device 100 is applied to inter-story drift angle monitoring, its working principle is the same as that of the deformation monitoring device 300 applied to the vibration reduction and isolation device. The difference is that during the installation process, the first connecting seat 110 is connected to the upper floor slab of the monitored floor, and the second connecting seat 140 is used to connect to the lower floor slab of the monitored floor.
[0057] Further, please refer to Figures 1-4 In this embodiment, when the telescopic component 130 is configured, its function is to provide vertical following through its telescopic movement when subjected to vertical force, and to adapt to lateral deflection and stretching. Specifically, the telescopic component 130 includes a sleeve rod 131 and a movable rod 132; the sleeve rod 131 is sleeved on the movable rod 132, and the movable rod 132 is slidably connected to the sleeve rod 131; the sleeve rod 131 is connected to the rotating connection component 120, and the movable rod 132 is connected to the second connecting seat 140. Moreover, in order to adapt to the offset, that is, to generate lateral deflection when subjected to lateral shear stress, the telescopic component 130 will generate a certain amount of telescopic extension and deflection. While one end is connected to the rotating connection component 120, the other end of the telescopic component 130 can be hinged to the second connecting seat 140, that is, the movable rod 132 can be hinged to the second connecting seat 140.
[0058] When hinged to the second connecting seat 140, this embodiment uses a ball-and-socket connector 141 on the second connecting seat 140, and a ball-head connector 133 hinged to the ball-and-socket connector 141 at the end of the movable rod 132. It should be noted that this arrangement is only one of many hinge methods. In other embodiments of this utility model, other types of structures, such as universal joints, can also be used.
[0059] Furthermore, in order to improve the stability of the sliding extension and retraction of the movable rod 132 relative to the sleeve rod 131, a linear bearing that is movably connected to the movable rod 132 is provided inside the sleeve rod 131.
[0060] Based on this, in order to enable the monitoring component to monitor its extension and retraction, the monitoring component includes a displacement sensor connected to the sleeve rod 131, which is used to monitor the extension and retraction of the movable rod 132 relative to the sleeve rod 131.
[0061] Based on the structure of the telescopic component 130 described above, please refer to... Figures 1-5 In this embodiment, when configuring the rotating connection assembly 120, the rotating connection assembly 120 includes a cross connecting joint 121, a first rotating joint 122, and a second rotating joint 123.
[0062] The cross-shaped connecting joint 121 is provided with a first rotating connecting part 124 and a second rotating connecting part 125; the first rotating joint 122 is rotatably connected to the first rotating connecting part 124, and the second rotating joint 123 is rotatably connected to the second rotating connecting part 125. The axis of rotation of the first rotating joint 122 relative to the first rotating connecting part 124 is the first axis, and the axis of rotation of the second rotating joint 123 relative to the second rotating connecting part 125 is the second axis. The first axis and the second axis are perpendicular.
[0063] The first rotating section 122 is connected to the first connecting seat 110, and the second rotating section 123 is connected to the telescopic assembly 130.
[0064] With the above-described structural arrangement, the second connecting joint can rotate relative to the cross connecting joint 121, and the cross connecting joint 121 can rotate relative to the first rotating joint 122. The rotation axis of the second rotating joint 123 is perpendicular to the rotation axis of the cross connecting joint 121. Based on this, in the process of the device following the vibration damping and isolation device 300, it can adapt to different lateral shear force directions, thereby meeting its following requirements and enabling real-time and accurate monitoring of its deformation and displacement.
[0065] In order for the monitoring component to monitor the rotation angle of the rotating connection component 120, the monitoring component includes a first angle sensor, which is used to monitor the rotation angle of the cross joint 121 relative to the first rotating joint 122 and the rotation angle of the second rotating joint 123 relative to the cross joint 121.
[0066] Based on the structure of the telescopic component 130 described above, please refer to... Figure 6 and combined Figures 1-5 Unlike the aforementioned rotating connection assembly 120, the rotating connection assembly 120 may also include a rotating connection platform 126 and a movable platform 127.
[0067] The rotating connecting platform 126 is rotatably connected to the first connecting seat 110; the movable platform 127 is rotatably connected to the rotating connecting platform 126, and the telescopic component 130 is connected to the movable platform.
[0068] The rotation axis of the rotating connecting platform 126 relative to the first connecting seat 110 is the third axis, and the rotation axis of the movable table 127 relative to the rotating connecting platform 126 is the fourth axis. The third axis and the fourth axis are perpendicular.
[0069] The monitoring components include a second angle sensor and a third angle sensor. The second angle sensor is used to monitor the rotation of the rotating connecting platform relative to the first connecting seat, and the third angle sensor is used to monitor the rotation of the movable stage relative to the rotating connecting platform.
[0070] With the above-described structural arrangement, the rotating connecting platform 126 can rotate relative to the first connecting seat 110, and the movable platform 127 can rotate relative to the rotating connecting platform 126. Moreover, the aforementioned rotation axes are perpendicular to each other. Based on this, in the process of the device following the vibration damping and isolation device 300, it can adapt to different lateral shear force directions, thereby meeting its following requirements and enabling it to monitor its deformation and displacement in real time and accurately.
[0071] It should be noted that, as can be seen from the above, the monitoring component may include the aforementioned displacement sensor, first angle sensor, second angle sensor and third angle sensor, and its function is to realize linear displacement monitoring and angle detection. Therefore, it can adopt the sensor structure in the prior art, and its specific structure will not be described in detail here.
[0072] Based on the above, please refer to Figures 1-7 This embodiment also provides a three-dimensional movement deformation monitoring method for a follow-up vibration damping and isolation device 300, which is implemented using the aforementioned three-dimensional movement deformation monitoring device 100, including:
[0073] The system receives a telescopic signal, which is output by the monitoring component, representing the telescopic component 130’s telescopic amount, and an angle signal, which is output by the monitoring component, representing the telescopic component 130’s rotation angle relative to the rotating connection component 120.
[0074] Establish a spatial coordinate system with the fixed point of the rotating connection component 120 as the origin (e.g. Figure 7 (as shown);
[0075] Based on the telescopic component 130's telescopic extension amount and the telescopic component 130's rotation angle relative to the rotating connection component 120, calculate the deformation coordinates at the connection point between the telescopic component 130 and the second connecting seat 140.
[0076] The initial coordinates and deformation coordinates of the connection between the telescopic component 130 and the second connecting seat 140 are compared to determine the three-dimensional movement deformation of the structure to be monitored (i.e., the structure to be monitored is the vibration isolation device 300) or the inter-story drift angle (i.e., the structure to be monitored is the floor being monitored).
[0077] Based on the above, it can be seen that the three-dimensional movement deformation monitoring method of the follow-up type vibration isolation device 300 can use the aforementioned three-dimensional movement deformation monitoring device 100 to perform follow-up monitoring on the vibration isolation device 300 or the monitored floor within the same isolation layer 200. Specifically, its principle is as follows:
[0078] The three-dimensional motion deformation monitoring device 100 described above can move in tandem with the monitored vibration damping and isolation device 300, thereby monitoring its vertical and lateral displacements. Based on this, the parameters obtained by monitoring the telescopic component 130 and the rotating connection component 120 are the telescopic component 130's telescopic amount and the rotating component's rotation angle. Since the rotating connection component 120 has at least two rotation axes, at least two rotation angle data are collected.
[0079] Based on this, a coordinate system can be established with the fixed point in the rotating connection component 120 as the origin. The fixed point can be the intersection of the two rotation axes of the rotating connection component 120 or other positions. If it is the intersection of the rotation axes, the relevant compensation value needs to be substituted when calculating its offset later.
[0080] Then, by substituting the telescopic component 130's telescopic amount and the rotation angle of the rotating component into the established coordinate system, the spatial coordinates of the end of the telescopic component 130 away from the origin can be obtained based on the relevant calculation formula. It should be noted that the end of the telescopic component 130 away from the origin refers to the coordinates of the connection point between the telescopic component 130 and the second connecting seat 140. Moreover, before starting the follow-up monitoring, it is necessary to measure the initial coordinates of this point so that the obtained follow-up monitoring coordinates can be compared with the initial coordinates after the follow-up monitoring starts, thereby enabling the evaluation of its deformation.
[0081] Further, in this embodiment, the step of calculating the deformation coordinates at the connection point between the telescopic component 130 and the second connecting seat 140 based on the telescopic component 130's telescopic extension amount and the rotation angle of the telescopic component 130 relative to the rotating connection component 120 includes:
[0082] Based on the telescopic extension amount of the telescopic component 130, determine the straight-line distance from the connection point between the telescopic component 130 and the second connecting seat 140 to the origin, and denote it as L;
[0083] The rotation angle of the cross joint 121 relative to the first rotating joint 122 is determined based on the monitoring components and denoted as α. The rotation angle of the second rotating joint 123 relative to the cross joint 121 is determined and denoted as β.
[0084] Based on the proposed spatial coordinate system, Formula 1 is obtained:
[0085] (Lcosγtanβ) 2 +(Lcosγtanα) 2 =(Lsinγ) 2 (1)
[0086] Simplifying Formula 1, we get:
[0087] (tanα) 2 +(tanβ) 2 =(tanγ) 2 (2)
[0088] Using Formula 2, the angle γ is obtained. At this point, the coordinates of the connection point between the telescopic component 130 and the second connecting seat 140 are x, y, z. Therefore:
[0089] x=Lcosγtanα(3)
[0090] y=Lcosγtanβ (4)
[0091] z = Lcosγ(5).
[0092] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A three-dimensional motion deformation monitoring device, characterized in that: The three-dimensional motion deformation monitoring device includes a first connecting seat, a rotating connecting assembly, a telescopic assembly, a second connecting seat, and a monitoring assembly; The first connecting seat and the second connecting seat are spaced apart. The rotating connecting component is connected to the first connecting seat, and the telescopic component is connected to the second connecting seat. The telescopic component is connected to the second connecting seat through the rotating connecting component. The monitoring component is used to monitor the amount of extension and retraction of the telescopic component, as well as the rotation angle of the telescopic component relative to the rotary connection component. The first connecting seat is used to connect to one end of the structure to be monitored that has a relative displacement or a deformed end, and the second connecting seat is used to connect to the other end of the structure to be monitored that has a relative displacement or a deformed end.
2. The three-dimensional motion deformation monitoring device according to claim 1, characterized in that: The telescopic assembly includes a sleeve rod and a movable rod; the sleeve rod is sleeved on the movable rod, and the movable rod and the sleeve rod are slidably connected; the sleeve rod is connected to the rotating connection assembly, and the movable rod is connected to the second connecting seat.
3. The three-dimensional motion deformation monitoring device according to claim 2, characterized in that: The movable rod is hinged to the second connecting seat.
4. The three-dimensional motion deformation monitoring device according to claim 3, characterized in that: The second connecting seat is equipped with a ball-and-socket connector, and the end of the movable rod is equipped with a ball-head connector that is hinged to the ball-and-socket connector; or, the second connecting seat is hinged to the movable rod via a universal joint connector.
5. The three-dimensional motion deformation monitoring device according to claim 2, characterized in that: The sleeve is equipped with a linear bearing that is movably connected to the movable rod.
6. The three-dimensional motion deformation monitoring device according to claim 5, characterized in that: The monitoring component includes a displacement sensor connected to the sleeve rod, the displacement sensor being used to monitor the extension or retraction of the movable rod relative to the sleeve rod.
7. The three-dimensional motion deformation monitoring device according to any one of claims 1-6, characterized in that: The rotating connection assembly includes a cross-shaped connecting joint, a first rotating joint, and a second rotating joint; The cross-shaped connecting joint is configured with a first rotating connecting portion and a second rotating connecting portion; the first rotating joint is rotatably connected to the first rotating connecting portion, and the second rotating joint is rotatably connected to the second rotating connecting portion, wherein the axis of rotation of the first rotating joint relative to the first rotating connecting portion is a first axis, and the axis of rotation of the second rotating joint relative to the second rotating connecting portion is a second axis, and the first axis and the second axis are perpendicular; the first rotating joint is connected to the first connecting seat, and the second rotating joint is connected to the telescopic assembly; The monitoring component includes a first angle sensor, which is used to monitor the rotation angle of the cross joint relative to the first rotating joint and the rotation angle of the second rotating joint relative to the cross joint.
8. The three-dimensional motion deformation monitoring device according to any one of claims 1-6, characterized in that: The rotating connection assembly includes a rotating connection platform and a movable platform; The rotating connecting platform is rotatably connected to the first connecting seat; the movable platform is rotatably connected to the rotating connecting platform, and the telescopic component is connected to the movable platform; The rotation axis of the rotating connecting platform relative to the first connecting seat is the third axis, and the rotation axis of the movable platform relative to the rotating connecting platform is the fourth axis. The third axis is perpendicular to the fourth axis. The monitoring component includes a second angle sensor and a third angle sensor. The second angle sensor is used to monitor the rotation of the rotating connecting platform relative to the first connecting seat, and the third angle sensor is used to monitor the rotation of the movable platform relative to the rotating connecting platform.