Locking control device for seismic mitigation and isolation platform
By combining locking mechanisms, monitoring sensors, and controllers, the intelligent locking and earthquake-time release of the seismic isolation platform is achieved, solving the problem of poor stability in existing technologies and realizing a balance between stability and protection of the seismic isolation platform.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
- Filing Date
- 2026-04-16
- Publication Date
- 2026-05-15
AI Technical Summary
Existing seismic isolation platforms lack intelligent locking and active control mechanisms for earthquake-induced release under normal conditions, resulting in poor stability and an inability to balance normal stability with earthquake-induced protection.
By employing a combination of locking mechanism, monitoring sensors, and controller, the locking components are switched between locked and unlocked positions by monitoring environmental vibrations and earthquake early warning signals, thereby achieving the stability and instantaneous unlocking of the seismic isolation platform.
This improves the operational stability of the seismic isolation platform, ensuring timely unlocking during earthquakes, safeguarding its seismic isolation function, and preventing daily disturbances while providing protection during earthquakes.
Smart Images
Figure CN122040808A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibration reduction structure technology, and more specifically, to a locking control device for a vibration isolation platform. Background Technology
[0002] Currently, seismic isolation platforms are widely used in the vibration protection of precision equipment, valuable exhibits, and important facilities. During an earthquake, these platforms isolate seismic energy through sliding or oscillating mechanisms, effectively protecting the superstructure from damage. However, in normal, non-seismic conditions, factors such as human contact, routine maintenance vibrations, or the operation of surrounding equipment may cause slight displacement or swaying of the platform. Prolonged instability not only affects the stability of the superstructure but may also interfere with normal functionality. Existing seismic isolation platforms generally lack an active control mechanism for intelligently switching between "normal locking" and "seismic release" states, failing to achieve a balance between normal stability and seismic protection. Summary of the Invention
[0003] The present invention aims to provide a locking control device for a seismic isolation platform, which can improve the operational stability of the seismic isolation platform and can unlock the seismic isolation platform instantaneously during an earthquake, thereby effectively ensuring the seismic isolation function of the seismic isolation platform.
[0004] The embodiments of the present invention can be implemented as follows: This invention provides a locking control device for a vibration damping and isolation platform. The vibration damping and isolation platform includes at least a first plate and a second plate. The first plate can move relative to the second plate in at least one direction. The locking control device for the vibration damping and isolation platform includes a locking mechanism, a monitoring sensor, and a controller. The locking mechanism includes a main body, a driving member, and at least one locking member; the main body is used to connect with the second plate; the locking member is movably connected to the main body and has at least a locking position that abuts against the first plate to restrict the movement of the first plate relative to the second plate, and an unlocking position that is released from the abutment against the first plate; the driving member is connected to the main body and is used to drive the locking member to change position between the locking position and the unlocking position. The monitoring sensor is installed on the ground, or connected to a first or second plate installed on the ground, and is used to monitor environmental vibrations; The controller is electrically connected to the monitoring sensor and the drive unit, and is used to control the drive unit to act when the environmental vibration detected by the monitoring sensor exceeds the vibration threshold or when the controller receives an earthquake early warning signal, so as to unlock the locking component.
[0005] In an optional embodiment, the vibration damping and isolation platform further includes a third plate, with the first plate, the second plate and the third plate arranged sequentially from top to bottom, and the second plate being movable relative to the third plate in at least one direction; The locking mechanism includes a first locking member and a second locking member; both the first locking member and the second locking member are movably connected to the main body, and the first locking member has a locking position that abuts against the first plate to restrict the movement of the first plate relative to the second plate, and an unlocking position that disengages from the first plate. The second locking member has a locking position that abuts against the third plate to restrict the movement of the second plate relative to the third plate, and an unlocking position that disengages from the third plate. The driving component is used to drive the first locking component and the second locking component to synchronously change positions between the locked and unlocked positions.
[0006] In an optional embodiment, the driving element includes a drive motor connected to the main body and used to drive the locking element to rotate or slide relative to the main body, so as to change the position between the locked position and the unlocked position.
[0007] In an optional embodiment, the locking element includes a locking pin, the outer peripheral surface of which is provided with strip teeth along its axial direction; the main body is provided with a slide for the locking pin to slide. The drive unit also includes a drive gear, a drive shaft, and a driven gear; the drive gear is connected to the output end of the drive motor, the drive shaft is rotatably connected to the main body, and a portion of it extends into the slide and meshes with the rack gear; the driven gear is connected to the drive shaft and is used to mesh with the drive gear.
[0008] In an optional embodiment, the locking element includes a locking pin; the driving element also includes a rotating disk, which is connected to the output end of the drive motor, and the locking pin is rotatably connected to the rotating disk.
[0009] In an optional implementation, the driving component includes a drive motor and an elastic element; The drive motor is connected to the main body, and the drive motor has a position for transmission connection with the locking member and a position for disconnection; the elastic member is connected to the main body and the locking member; When the drive motor is connected to the locking component, the drive motor drives the locking component to rotate or slide relative to the main body, so as to change from the unlocked position to the locked position; when the drive motor is disconnected from the locking component, the locking component changes from the locked position to the unlocked position under the elastic force of the elastic element.
[0010] In an optional embodiment, the locking member includes a locking pin, the outer peripheral surface of which is provided with strip teeth along its axial direction; the main body is provided with a slide for the locking pin to slide; an elastic member is placed in the slide and is used to make the locking pin have a tendency to move in the direction of sliding into the slide. The drive unit also includes a movable frame, a drive gear, a transmission shaft, a driven gear, and an adjusting cam; the movable frame is rotatably connected to the main body, and the drive motor is connected to the movable frame; the drive gear is connected to the output end of the drive motor, the transmission shaft is rotatably connected to the main body, and part of it extends into the slide rail and meshes with the rack gear; the driven gear is connected to the transmission shaft and is used to mesh with the drive gear. The adjusting cam is connected to the output end of the drive motor and is used to resist the main body under the driving action of the drive motor, so as to drive the movable frame to rotate relative to the main body and disengage the driving gear from the driven gear.
[0011] In an optional embodiment, the locking member has a sliding surface, a sliding wheel, or a caster wheel at the end that abuts against the first plate.
[0012] In an optional embodiment, the first plate is provided with a symmetrical inclined groove or conical surface that cooperates with a sliding surface, a sliding wheel or a caster wheel.
[0013] In an alternative implementation, the controller is connected to the main body, or the controller is connected to the monitoring sensor.
[0014] The beneficial effects of the vibration damping and isolation platform locking control device provided in this embodiment of the invention include: The locking control device for the seismic isolation platform includes a locking mechanism, a monitoring sensor, and a controller. The locking mechanism includes a main body, a driving component, and at least one locking element. The main body is connected to a second plate. The locking element is movably connected to the main body and has at least a locking position that abuts against a first plate to restrict the movement of the first plate relative to the second plate, and an unlocking position that disengages from the first plate. The driving component is connected to the main body and is used to drive the locking element to change position between the locking and unlocking positions. The monitoring sensor is installed on the ground, or connected to a first or second plate installed on the ground, and is used to monitor environmental vibration. The controller is electrically connected to the monitoring sensor and the driving component and is used to control the driving component to unlock the locking element when the environmental vibration detected by the monitoring sensor exceeds a vibration threshold or when the controller receives an earthquake early warning signal. This locking control device for the seismic isolation platform can improve the operational stability of the seismic isolation platform and can unlock the seismic isolation platform instantaneously during an earthquake, thereby effectively ensuring the seismic isolation function of the seismic isolation platform. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.
[0016] Figure 1 This is a schematic diagram of the structure of the locking control device for the vibration damping and isolation platform provided in this embodiment; Figure 2 This is a schematic diagram of the locking mechanism provided in this embodiment from a first-view perspective; Figure 3 This is a schematic diagram of the locking mechanism provided in this embodiment from a second perspective. Figure 4 A cross-sectional view of the main body of the locking mechanism provided in this embodiment; Figure 5 This is a schematic diagram of the locking mechanism provided in this embodiment after the driven gear is hidden. Figure 6 This embodiment provides a schematic diagram of the structure of the locking mechanism when it includes a rotating disk; Figure 7 This is a structural diagram of the first plate body in this embodiment when it adopts symmetrical inclined grooves; Figure 8 This is a cross-sectional view of the first plate body in this embodiment when it adopts symmetrical inclined grooves; Figure 9 This is a structural diagram showing the first plate in this embodiment when it has a conical surface; Figure 10 This is a cross-sectional view of the first plate in this embodiment when it has a conical surface.
[0017] Icons: 100-Locking control device for vibration damping and isolation platform; 200-Vibration damping and isolation platform; 210-First plate; 220-Second plate; 230-Third plate; 110-Locking mechanism; 130-Monitoring sensor; 150-Controller; 111-Main body; 112-Drive component; 113-Locking component; 101-First locking component; 102-Second locking component; 114-Drive motor; 115-Locking pin; 116-Strip gear; 117-Slide rail; 118-Driving gear; 119-Drive shaft; 121-Driven gear; 122-Rotating disk; 123-Adjusting cam; 124-Modible frame; 125-Sliding wheel; 211-Symmetrical inclined groove; 212-Conical surface; 213-Locking hole. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.
[0020] 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.
[0021] In the description of this invention, 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 product of this invention is usually placed, they are only for the convenience of describing this invention 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 invention.
[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0023] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.
[0024] Seismic isolation platforms are widely used for vibration protection of precision equipment, valuable exhibits, and critical facilities. During an earthquake, these platforms isolate seismic energy through sliding or oscillating mechanisms, effectively protecting the superstructure from damage. However, in normal, non-seismic conditions, factors such as human contact, routine maintenance vibrations, or the operation of surrounding equipment can cause slight displacement or swaying of the platform. Prolonged instability not only affects the stability of the superstructure but may also interfere with normal functionality. Existing seismic isolation platforms generally lack an active control mechanism for intelligently switching between "normal locking" and "seismic release" states, failing to achieve a balance between normal stability and seismic protection.
[0025] The inventors discovered through research that existing technologies have the following drawbacks: Platforms without locking function: They are always in a floating state, and the upper load lacks absolute stability in the daily environment. Accidental contact by personnel can cause the platform to move, which in turn can cause the load to shake or even overturn and be damaged, posing a safety hazard. Fixed locking platform: Some platforms are locked manually or in a fixed manner, but they cannot be unlocked in time when an earthquake occurs, resulting in the failure of the seismic isolation function. The upper load-bearing structure directly bears the earthquake impact and loses its seismic isolation protection significance. Limitations of passive protection: Existing technologies are mostly passive response modes, which cannot actively identify the nature of vibration sources, make it difficult to distinguish between daily disturbance vibrations and actual ground vibrations, and cannot achieve rapid and reliable release during earthquakes while ensuring daily stability.
[0026] To solve the above problem, please refer to Figures 1-5 This embodiment provides a locking control device 100 for a vibration damping and isolation platform. The vibration damping and isolation platform 200 includes at least a first plate 210 and a second plate 220. The first plate 210 can move relative to the second plate 220 in at least one direction. The locking control device 100 for the vibration damping and isolation platform includes a locking mechanism 110, a monitoring sensor 130, and a controller 150. The locking mechanism 110 includes a main body 111, a driving member 112, and at least one locking member 113. The main body 111 is used to connect with the second plate 220. The locking member 113 is movably connected to the main body 111 and has at least a locking position that abuts against the first plate 210 to restrict the movement of the first plate 210 relative to the second plate 220, and an unlocking position that is released from the abutment against the first plate 210. The driving member 112 is connected to the main body 111 and is used to drive the locking member 113 to change position between the locking position and the unlocking position. The monitoring sensor 130 is installed on the ground, or connected to the first plate 210 or the second plate 220 installed on the ground, and is used to monitor environmental vibration; The controller 150 is electrically connected to the monitoring sensor 130 and the drive unit 112, and is used to control the drive unit 112 to act when the environmental vibration detected by the monitoring sensor 130 exceeds the vibration threshold or when the controller 150 receives an earthquake early warning signal (EEW) to unlock the locking member 113.
[0027] Please refer to Figures 1-5 The working principle of the locking control device 100 for the vibration isolation platform is as follows: First, the locking control device 100 of the vibration isolation platform is applied to the vibration isolation platform 200. Its purpose is to enable the vibration isolation platform 200 to have two states: "normal locking" and "early release", so that it can meet the daily use and ensure its timely release function during an earthquake. It should be noted that the vibration reduction and isolation platform 200 in this embodiment is existing technology, which has the function of vibration reduction and isolation, and its specific structure will not be described in detail here.
[0028] Based on the aforementioned vibration reduction and isolation platform 200, when the vibration reduction and isolation platform locking control device 100 is installed on the vibration reduction and isolation platform 200, the device locks and unlocks the two relatively movable plates that can achieve vibration reduction and isolation through the vibration reduction and isolation platform locking control device 100. When unlocked, the two plates of the vibration reduction and isolation platform 200 can move relative to each other to achieve vibration reduction and isolation, while when locked, the two plates of the vibration reduction and isolation platform 200 are relatively fixed to prevent displacement or shaking between them. When configuring the locking control device 100 for the seismic isolation platform, it includes a locking mechanism 110, a monitoring sensor 130, and a controller 150. The locking mechanism 110, acting as an actuator, is installed on the seismic isolation platform 200. The monitoring sensor 130 can be installed on the ground or connected to a first plate 210 or a second plate 220 installed on the ground, and is used to monitor environmental vibrations. The controller 150 is electrically connected to the driving component 112 of the monitoring sensor 130 and the locking mechanism 110, and is used to control the locking mechanism 150 when the environmental vibration detected by the monitoring sensor 130 exceeds a vibration threshold or when the controller 150 receives an earthquake early warning signal. The driving component 112 is activated to unlock the locking component 113. It should be noted that, in configuring the vibration damping and isolation platform locking control device 100, to simplify its overall structure, the controller 150 is connected to the main body 111, that is, the controller 150 can be integrated with the main body 111, or the controller 150 can be connected to the monitoring sensor 130, that is, integrated with the monitoring sensor 130. Furthermore, when the controller 150 is electrically connected to the monitoring sensor 130 and the driving component 112 of the locking mechanism 110, either a wired connection or a wireless connection can be used, and the specific connection method can be adjusted according to the usage requirements. When the locking mechanism 110 is configured, the locking mechanism 110 includes a main body 111, a driving member 112, and at least one locking member 113. Its function is to restrict the vibration reduction and isolation function of the vibration reduction and isolation platform 200. That is, taking the vibration reduction and isolation platform 200 as an example, which includes a first plate 210 and a second plate 220, the main body 111 is used to connect with the second plate 220; the locking member 113 is movably connected to the main body 111 and has at least a locking position that abuts against the first plate 210 to restrict the movement of the first plate 210 relative to the second plate 220, and an unlocking position that is released from abutting against the first plate 210; the driving member 112 is connected to the main body 111 and is used to drive the locking member 113 to change position between the locking position and the unlocking position. That is, the locking mechanism 110 is configured so that the controller 150 can control the drive member 112 according to the vibration signal detected by the monitoring sensor 130, thereby maintaining or making the locking member 113 in the unlocked position in the event of an earthquake, and keeping the vibration isolation platform 200 in the locked state or changing the vibration isolation platform 200 to the locked state when no earthquake occurs or when the vibration isolation platform 200 is not required to perform vibration isolation function. Therefore, through the above structural design, the locking control device 100 of the vibration isolation platform can improve the operational stability of the vibration isolation platform 200 and can instantly unlock the vibration isolation platform 200 during an earthquake, thereby effectively ensuring the vibration isolation function of the vibration isolation platform 200. Furthermore, in its implementation, it can be implemented in a one-to-one correspondence between the monitoring sensor 130, the controller 150, and the locking mechanism 110; alternatively, if multiple vibration isolation platforms 200 are provided, and each vibration isolation platform 200 is equipped with a corresponding locking mechanism 110, multiple monitoring sensors 130 can be configured, and a controller 150 can receive the monitoring signals from one or more monitoring sensors 130 and control the operation of the drive components 112 of all locking mechanisms 110 through the controller 150.
[0029] It should be noted that when the controller 150 receives the environmental vibration data monitored by the monitoring sensor 130, it can process and analyze the data based on the monitored signals, and can quickly determine the vibration situation based on the relevant vibration data threshold. Thus, it can control the drive component 112 of the locking structure in time when an earthquake or a large vibration occurs, so as to unlock the locking mechanism 110, thereby enabling the vibration reduction and isolation platform 200 to realize its vibration reduction and isolation function. In addition, this embodiment takes the configuration of one monitoring sensor 130 as an example. In other embodiments, multiple monitoring sensors 130 can be configured to monitor environmental vibration signals in real time. The monitoring sensor 130 may include a triaxial acceleration sensor and / or a high-precision velocity-type seismic sensor, which are arranged at multiple locations such as the foundation of the building structure, near the display case and / or the fixed position of the platform body and the ground, to collect vibration data. The controller 150 is a decision-making unit with an embedded intelligent discrimination algorithm. It receives data from the sensor module, analyzes parameters such as amplitude, frequency, duration and waveform characteristics of vibration signals in real time, and compares them with preset thresholds and / or seismic wave feature databases to accurately distinguish between daily disturbances (such as people walking or touching) and real earthquake vibrations. Only when it is determined to be a real earthquake event will it issue an unlocking command to the locking mechanism 110. The locking mechanism 110 receives commands from the control module. Under normal conditions, it is in a mechanically locked state, rigidly connecting or limiting the platform to the foundation structure. Upon receiving an unlocking command, it releases the mechanical constraints within milliseconds via electromagnetic drive, shape memory alloy, or motor drive, restoring the platform's seismic isolation degrees of freedom. After an earthquake, it can be relocked via a manual or automatic reset mechanism.
[0030] Further, please refer to Figures 1-5 In this embodiment, when configuring the vibration isolation platform 200, it can adopt the above-mentioned configuration of the first plate 210 and the second plate 220. In addition, the vibration isolation platform 200 may also include a third plate 230. The first plate 210, the second plate 220 and the third plate 230 are arranged sequentially from top to bottom. The second plate 220 can move relative to the third plate 230 in at least one direction. The locking mechanism 110 includes a first locking member 101 and a second locking member 102; both the first locking member 101 and the second locking member 102 are movably connected to the main body 111, and the first locking member 101 has a locking position that abuts against the first plate 210 to restrict the movement of the first plate 210 relative to the second plate 220, and an unlocking position that is released from abutment against the first plate 210; The second locking member 102 has a locking position that abuts against the third plate 230 to restrict the movement of the second plate 220 relative to the third plate 230, and an unlocking position that disengages from the third plate 230. The driving component 112 is used to drive the first locking component 101 and the second locking component 102 to synchronously change positions between the locked position and the unlocked position.
[0031] That is, when the vibration isolation includes a first plate 210, a second plate 220 and a third plate 230, the main body 111 can be installed on the middle second plate 220, and two locking members 113 are provided accordingly. The two locking members 113 respectively abut against the first plate 210 and the third plate 230, that is, the first locking member 101 and the second locking member 102; When the corresponding drive component 112 is configured, in order to satisfy the function of unlocking the vibration damping platform 200, the drive component 112 is used to drive the first locking component 101 and the second locking component 102 to move synchronously. That is, it can drive the first locking component 101 and the second locking component 102 to move synchronously to the locking position or to the unlocking position, so as to fully guarantee the unlocking function of the locking mechanism 110.
[0032] When configuring the drive component 112, its purpose is to drive the locking component 113 to change position between the locked position and the unlocked position, thereby locking or unlocking the vibration damping and isolation platform 200. The following description will take the vibration damping and isolation platform 200, which includes the first plate 210 and the second plate 220, as an example. For details, please refer to Figures 1-6 When configuring the driving component 112, it can include a driving motor 114, which is connected to the main body 111 and is used to drive the locking component 113 to rotate or slide relative to the main body 111, so as to change its position between the locked position and the unlocked position. That is, under the driving action of the driving component 112, the locking component 113 can change its position between the locked position and the unlocked position by rotating or sliding. When the movement of the locking member 113 under the driving action of the driving member 112 is sliding, the locking member 113 includes a locking pin 115, and the outer peripheral surface of the locking pin 115 is provided with a strip tooth 116 along its axial direction; the main body 111 is provided with a slide rail 117 for the locking pin 115 to slide; the driving member 112 also includes a driving gear 118, a transmission shaft 119 and a driven gear 121; the driving gear 118 is connected to the output end of the driving motor 114, the transmission shaft 119 is rotatably connected to the main body 111, and part of it extends into the slide rail 117 and meshes with the strip tooth 116; the driven gear 121 is connected to the transmission shaft 119 and is used to mesh with the driving gear 118. That is, in this way, the drive motor 114 can drive the drive gear 118 to rotate. Since the drive gear 118 meshes with the driven gear 121, the drive motor 114 can drive the driven gear 121 to rotate through the drive gear 118. The driven gear 121 is connected to the transmission shaft 119, and the transmission shaft 119 meshes with the strip teeth 116 on the locking pin 115. Therefore, when the transmission shaft 119 rotates, it can drive the locking pin 115 to slide relative to its corresponding slide rail 117. It should be noted that in this embodiment, the movement of the locking pin 115 into the slide rail 117 is considered as movement towards the unlocked position, and the movement of it out of the slide rail 117 is considered as movement towards the locked position.
[0033] When the locking element 113 rotates under the drive of the driving element 112, the locking element 113 includes a locking pin 115; the driving element 112 also includes a rotating disk 122, which is connected to the output end of the drive motor 114, and the locking pin 115 is rotatably connected to the rotating disk 122. Thus, in this way, the drive motor 114 can drive the rotating disk 122 to rotate, and since the locking pin 115 is rotatably connected to the rotating disk 122, it can be driven to rotate. It should be noted that in this configuration, the locking pin 115 moves towards the unlocked position as the rotating disk 122 rotates in the first direction, and moves towards the locked position when it rotates in the second direction. The first and second directions are opposite, and the first direction is either clockwise or counterclockwise, while the second direction is either clockwise or counterclockwise.
[0034] Unlike the structure of the drive unit 112 configured above, the drive unit 112 uses the action of the drive motor 114 to drive the locking pin 115 to change position. Based on the above structure, the drive motor 114 in the drive unit 112 can drive the locking pin 115 to change to the locked position, and the elastic element can change it to the unlocked position. Specifically, the drive unit 112 includes the drive motor 114 and the elastic element. The drive motor 114 is connected to the main body 111, and the drive motor 114 has a position that is connected to the locking member 113 and a position that is disconnected; the elastic member is connected to the main body 111 and the locking member 113. When the drive motor 114 is connected to the locking member 113, the drive motor 114 drives the locking member 113 to rotate or slide relative to the main body 111, changing it from the unlocked position to the locked position. When the drive motor 114 is disconnected from the locking member 113, the locking member 113 changes from the locked position to the unlocked position under the elastic force of the elastic member. That is, with this arrangement, compared to the above method, an adjusting cam 123 and an elastic member are added, so that the operation of the drive motor 114 can drive the locking member 113 to move, thereby changing it from the unlocked position to the locked position; and when unlocking is required, the drive motor 114 is disconnected from the locking member 113, at which time the locking member 113 changes from the locked position to the unlocked position under the elastic force of the elastic member.
[0035] In order for the locking member 113 to move under the action of the elastic member, the locking member 113 includes a locking pin 115, and the outer peripheral surface of the locking pin 115 is provided with a strip tooth 116 along its axial direction; the main body 111 is provided with a slide 117 for the locking pin 115 to slide; the elastic member is placed in the slide 117 and is used to make the locking pin 115 have a tendency to move in the direction of sliding into the slide 117; The drive unit 112 also includes a movable frame 124, a drive gear 118, a transmission shaft 119, a driven gear 121, and an adjusting cam 123; the movable frame 124 is rotatably connected to the main body 111, and the drive motor 114 is connected to the movable frame 124; the drive gear 118 is connected to the output end of the drive motor 114, the transmission shaft 119 is rotatably connected to the main body 111, and a portion of it extends into the slide rail 117 and meshes with the rack gear 116; the driven gear 121 is connected to the transmission shaft 119 and is used to mesh with the drive gear 118; The adjusting cam 123 is connected to the output end of the drive motor 114 and is used to abut against the main body 111 under the driving action of the drive motor 114, so as to drive the movable frame 124 to rotate relative to the main body 111 and cause the driving gear 118 to disengage from the driven gear 121.
[0036] It should be noted that when configuring the aforementioned adjusting cam 123, it is connected to the output end of the drive motor 114. In this configuration, when the drive motor 114 drives the driving gear 118 and the adjusting cam 123 to rotate, the adjusting cam 123 rotates to a position abutting against the main body 111, thereby driving the movable frame 124 to rotate relative to the main body 111. This disengages the driving gear 118 from the driven gear 121. Furthermore, during rotation, only a portion of the adjusting cam 123 abuts against the main body 111, causing the movable frame 124 to rotate relative to the main body 111, thus disengaging the driving gear 118 from the driven gear 121. In other words, the driving motor... Taking the output end of motor 114 driving the drive gear 118 and the adjusting cam 123 to rotate 360° as an example, when the adjusting cam 123 rotates to the position of abutting against the main body 111, the output end of the drive motor 114 continuously rotates an angle of 5°-30° in the same direction, which can disengage the drive gear 118 from the driven gear 121. After this angle, the drive gear 118 and the driven gear 121 will be in a meshing state. At this time, the drive gear 118 can drive the driven gear 121 and the transmission shaft 119 to move. Then, through the meshing of the transmission shaft 119 with the strip tooth 116 on the locking pin 115, the locking pin 115 is driven to slide out of the slide rail 117 and move towards the locking position.
[0037] Furthermore, in the above structure, the unlocking response speed can be improved by setting the drive motor 114 and the elastic element, so as to achieve fast unlocking. After unlocking, when the vibration damping platform 200 returns to the locked position, the position of the locking mechanism 110 can be manually adjusted, or the lock pin 115 can be moved by controlling the drive motor 114, so that it abuts against the first plate 210 and thus the first plate 210 is reset.
[0038] Please refer to Figures 1-10 During the process of resetting the first plate 210 by driving the locking pin 115 to move via the drive motor 114, in order to reduce the friction between the locking pin 115 and the first plate 210 during the movement, the locking member 113 is provided with a sliding surface, a sliding wheel 125, or a universal wheel at the end that abuts against the first plate 210. Moreover, in order to guide the first plate 210 to reset, the first plate 210 is provided with a symmetrical inclined groove 211 or a conical surface 212 that cooperates with the sliding surface, the sliding wheel 125, or the universal wheel, and the center of the symmetrical inclined groove 211 or the conical surface 212 is provided with a locking hole 213 that cooperates with the locking pin 115, the purpose of which is to maintain the locked position.
[0039] Please refer to Figures 1-10 Through the above structural design, the locking control device 100 of the seismic isolation platform can realize a closed-loop control strategy of absolute locking during normal operation, instantaneous release during earthquakes, and automatic re-centering after earthquakes. The core is to solve the contradiction between "stability display" and "earthquake protection", and realize the technological upgrade from passive vibration reduction to active intelligent protection.
[0040] The design incorporates a drive motor 114, which, in conjunction with a reducer, slowly drives the locking pin 115 to engage with the first plate 210 containing the lock hole 213. This effectively prevents secondary vibrations caused by rigid impacts on the upper items, thus preventing shaking or damage to the items due to the locking action itself. Furthermore, when the vibration isolation platform deviates from its initial position due to prior displacement or temperature deformation, the locking tongue, in conjunction with the inclined groove or conical surface 212, gradually pushes the platform's movable plate back to its original position during the slow locking process. This ensures precise alignment of the locking pin 115 with the lock hole 213, achieving reliable locking and overcoming the technical bottleneck of difficult alignment in traditional locking mechanisms 110.
[0041] The rapid unlocking mechanism aims to seize the critical time window for earthquake protection. After an earthquake, the system must unlock within hundreds of milliseconds before the arrival of the destructive S-wave, allowing the platform to quickly regain its seismic isolation degrees of freedom, ensuring that the seismic isolation device performs its designed energy dissipation function, and preventing items from being subjected to rigid seismic impacts. This is achieved by the drive motor 114 receiving the unlocking command and rotating in the reverse direction, driving the lever or cam mechanism to lift the drive gear 118, forcibly separating the master and slave gears. At this moment, the locking tongue loses its constraint and is instantly pulled back by the compression spring, achieving millisecond-level rapid retraction and unlocking.
[0042] Based on the above, museums, as venues for the collection and display of precious cultural relics, have unique and significant requirements for seismic isolation and protection. Unlike industrial equipment or ordinary facilities, museum exhibits possess both non-renewable and extremely high value. Once damaged due to vibration or shaking, their historical, artistic, and cultural value will suffer irreversible loss. Therefore, the stability of the seismic isolation platform 200 is subject to technical standards far exceeding those of ordinary application scenarios, requiring absolute safety and zero tolerance for error. The daily display environment of museums is highly complex. On the one hand, as public cultural venues, museums experience high visitor traffic. Visitors touching or leaning on display cases, or the slight vibrations in the floor caused by people walking, can all be transmitted to the seismic isolation platform 200, resulting in non-seismic displacement. Although this displacement is small, it is enough to cause the cultural relics to shake, affecting the visitor experience and potentially causing the relics to overturn or be damaged by collisions. On the other hand, the continuous micro-vibrations generated by the museum's air conditioning system, lighting equipment, elevator operation, and nearby traffic, combined with occasional human interference, create a complex vibration environment, posing a continuous challenge to the daily locking stability of the seismic isolation platform 200. In addition, the display cases and platforms need to meet the requirements of transparent display. Traditional fixed or bulky protective measures will obstruct the view. The locking mechanism 110 is required to be small and concealed, while not affecting the display effect of cultural relics.
[0043] The application of seismic isolation and vibration reduction in museum exhibits faces a core contradiction: absolute static stability is required in normal conditions, while instantaneous release of seismic isolation is required during earthquakes. Specifically, during artifact display, the platform must remain rigidly fixed, preventing any displacement or shaking caused by non-seismic factors, ensuring the artifact remains immobile and preventing accidental contact by visitors. In the event of an earthquake, the platform must unlock within hundreds of milliseconds before the arrival of destructive seismic waves, especially S-waves, restoring its seismic isolation degrees of freedom. It must dissipate seismic energy through sliding or oscillation, preventing the artifact from being subjected to rigid impact. After the earthquake, the platform may deviate from its equilibrium position due to seismic isolation displacement. The locking mechanism 110 must have an automatic centering function to ensure reliable locking after the platform resets, facilitating subsequent artifact safety assessments and display restoration.
[0044] Given the unique environment of museums, the control logic of the seismic isolation platform 200 must possess highly reliable intelligent judgment capabilities. The system needs to use multi-sensor collaborative judgment to compare vibration data from the building foundation and the platform itself, eliminating non-seismic vibration sources and preventing accidental locking that could destabilize artifacts. Simultaneously, the entire process from initial seismic wave detection to unlocking execution must be completed on a millisecond timescale, switching states before the arrival of destructive S-waves. This places stringent requirements on sensor accuracy, algorithm efficiency, and the response speed of the actuators. Furthermore, the system must also have a locking / releasing status indication function, allowing museum management personnel to monitor the platform's operational status in real time and meet the needs of daily inspections and emergency management.
[0045] Please refer to Figures 1-10 The advantages of applying the vibration damping and isolation platform locking control device 100 to a museum are as follows: To achieve absolute stability in the daily display of cultural relics, the seismic isolation platform locking control device 100 rigidly connects the seismic isolation platform 200 to the foundation structure under normal conditions. This effectively prevents platform displacement and shaking caused by non-seismic factors such as visitor touch, personnel movement, and equipment operation, ensuring that precious cultural relics remain perfectly still during the display period. This completely eliminates the risk of cultural relics tipping over or colliding due to daily micro-vibrations, while also enhancing the viewing experience and sense of security for visitors.
[0046] To ensure instantaneous seismic isolation protection during earthquakes, the system utilizes multi-sensor fusion and intelligent discrimination algorithms to unlock the platform within hundreds of milliseconds of the initial seismic wave, restoring its seismic isolation degrees of freedom before the destructive S-wave arrives, thus protecting cultural relics from rigid seismic impacts. This rapid switching from rigid locking to free seismic isolation represents a technological upgrade from passive damping to active intelligent protection, significantly increasing the survival probability of cultural relics during earthquakes.
[0047] Equipped with automatic centering and reliable reset functions after an earthquake, the locking mechanism 110 of this device, through a sloping groove and roller structure, utilizes the horizontal component force generated by the upward pressure of the locking pin to slowly push the platform back to the center position, ensuring that the locking pin is accurately inserted into the lock hole 213, achieving reliable locking after the earthquake. This function simplifies the museum's post-earthquake recovery process, allowing for rapid restoration of the exhibition state without complex manual alignment operations.
[0048] Significantly reducing the risk of false triggering, the system adopts a multi-sensor joint judgment mechanism of building foundation and platform body. It only triggers unlocking when multiple vibrations simultaneously meet the characteristics of ground motion, effectively distinguishing between daily disturbance vibrations and real ground motion, avoiding false unlocking accidents caused by local gathering of people or equipment start-up and shutdown, and providing double insurance for the safety of cultural relics.
[0049] To meet the special display requirements of museum spaces, the locking mechanism 110 of the vibration isolation platform locking control device 100 is compactly designed and can be concealed in the bottom of the display case or in the platform mezzanine. It does not occupy display space or obstruct the view of the audience, and takes into account the dual needs of cultural relic safety protection and transparent display. It is especially suitable for museum exhibition environments with extremely high requirements for aesthetics.
[0050] To enhance the efficiency of museum emergency management, the system features a status visualization function, allowing managers to monitor the locking and unlocking status of each display case platform in real time, facilitating daily inspections and maintenance. After an earthquake, the system can be remotely or manually reset quickly, shortening post-earthquake recovery time and reducing the manpower and technical barriers to emergency management.
[0051] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A locking control device for a vibration damping and isolation platform, the vibration damping and isolation platform comprising at least a first plate and a second plate, the first plate being movable relative to the second plate in at least one direction, characterized in that: The locking control device for the vibration damping and isolation platform includes a locking mechanism, monitoring sensors, and a controller; The locking mechanism includes a main body, a driving member, and at least one locking member; the main body is used to connect with the second plate; the locking member is movably connected to the main body and has at least a locking position that abuts against the first plate to restrict the movement of the first plate relative to the second plate, and an unlocking position that disengages from the first plate; the driving member is connected to the main body and is used to drive the locking member to change position between the locking position and the unlocking position; The monitoring sensor is installed on the ground, or connected to a first or second plate installed on the ground, and is used to monitor environmental vibration; The controller is electrically connected to the monitoring sensor and the drive unit, and is used to control the drive unit to move when the environmental vibration detected by the monitoring sensor exceeds the vibration threshold or when the controller receives an earthquake early warning signal, so as to unlock the locking component.
2. The locking control device for the vibration damping and isolation platform according to claim 1, characterized in that: The vibration damping and isolation platform also includes a third plate. The first plate, the second plate, and the third plate are arranged sequentially from top to bottom. The second plate can move relative to the third plate in at least one direction. The locking mechanism includes a first locking member and a second locking member; both the first locking member and the second locking member are movably connected to the main body, and the first locking member has a locking position that abuts against the first plate to restrict the movement of the first plate relative to the second plate, and an unlocking position that disengages from the first plate. The second locking member has a locking position that abuts against the third plate to restrict the movement of the second plate relative to the third plate, and an unlocking position that disengages from the third plate. The driving component is used to drive the first locking component and the second locking component to synchronously change positions between the locking position and the unlocking position.
3. The locking control device for the vibration damping and isolation platform according to claim 1, characterized in that: The driving component includes a drive motor connected to the main body and used to drive the locking component to rotate or slide relative to the main body, so as to change position between the locked position and the unlocked position.
4. The locking control device for the vibration damping and isolation platform according to claim 3, characterized in that: The locking element includes a locking pin, and the outer peripheral surface of the locking pin is provided with strip teeth along its axial direction; the main body is provided with a slide for the locking pin to slide. The driving component also includes a driving gear, a transmission shaft, and a driven gear; the driving gear is connected to the output end of the drive motor, the transmission shaft is rotatably connected to the main body, and a portion of it extends into the slide rail and meshes with the strip gear; The driven gear is connected to the drive shaft and is used to mesh with the driving gear.
5. The vibration damping and isolation platform locking control device according to claim 3, characterized in that: The locking component includes a locking pin; the driving component also includes a rotating disk, which is connected to the output end of the driving motor, and the locking pin is rotatably connected to the rotating disk.
6. The locking control device for the vibration damping and isolation platform according to claim 1, characterized in that: The driving component includes a drive motor and an elastic component; The drive motor is connected to the main body, and the drive motor has a position that is connected to the locking member and a position that is disconnected; the elastic member is connected to the main body and the locking member; When the drive motor is connected to the locking member, the drive motor is used to drive the locking member to rotate or slide relative to the main body, so as to change from the unlocked position to the locked position; When the drive motor is disengaged from the locking member, the locking member changes from the locked position to the unlocked position under the elastic force of the elastic member.
7. The vibration damping and isolation platform locking control device according to claim 6, characterized in that: The locking element includes a locking pin, the outer peripheral surface of which is provided with strip teeth along its axial direction; the main body is provided with a slide for the locking pin to slide; the elastic element is placed in the slide and is used to make the locking pin have a tendency to move in the direction of sliding into the slide; The driving component further includes a movable frame, a driving gear, a transmission shaft, a driven gear, and an adjusting cam; the movable frame is rotatably connected to the main body, and the drive motor is connected to the movable frame; the driving gear is connected to the output end of the drive motor, and the transmission shaft is rotatably connected to the main body, with a portion extending into the slide rail and meshing with the strip tooth; The driven gear is connected to the drive shaft and is used to mesh with the driving gear; The adjusting cam is connected to the output end of the drive motor and is used to abut against the main body under the driving action of the drive motor, so as to drive the movable frame to rotate relative to the main body and cause the driving gear to disengage from the driven gear.
8. The vibration damping and isolation platform locking control device according to any one of claims 1-7, characterized in that: The locking member is provided with a sliding surface, a sliding wheel, or a swivel wheel at the end that abuts against the first plate.
9. The locking control device for the vibration damping and isolation platform according to claim 8, characterized in that: The first plate is provided with a symmetrical inclined groove or conical surface that cooperates with the sliding surface, the sliding wheel or the universal wheel.
10. The vibration damping and isolation platform locking control device according to any one of claims 1-7, characterized in that: The controller is connected to the main body, or the controller is connected to the monitoring sensor.