Adjustable three-dimensional shock insulation support mechanism

Abstract

The invention discloses an adjustable three-dimensional shock insulation support mechanism, which relates to the technical field of shock insulation and comprises an upper support, a lower support and a connecting rod type damper for connecting the upper support with the lower support. The connecting rod type damper comprises an upper adapter plate, a lower adapter plate and a middle frame, the upper adapter plate, the lower adapter plate and the middle frame are linearly arranged, the separated ends of the upper adapter plate and the lower adapter plate are universally hinged to the upper support and the lower support respectively, and the middle frame is located between the upper adapter plate and the lower adapter plate. The close ends of the upper adapter plate and the lower adapter plate are inserted into the middle frame in a damping mode. The upper adapter plate, the lower adapter plate and the middle frame are linearly arranged, damping type insertion is adopted, efficient force transmission and compact structure are guaranteed, and a basic essential function is formed. Meanwhile, the elastic piece is arranged in the middle frame, the elastic piece is directly compressed or stretched through sliding of the adjusting plate in the sliding groove, and therefore stepless and linear adjustment of the rigidity or the pre-tightening force of the damper is achieved.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation technology, specifically to an adjustable three-dimensional seismic isolation bearing mechanism. Background Technology

[0002] Seismic isolation bearings are support devices installed in structures to achieve seismic isolation requirements. They add a seismic isolation layer between the superstructure (such as a building) and the foundation, providing a flexible connection between the superstructure and the foundation. Taking a building as an example, the seismic isolation layer can be selected as a laminated rubber bearing (also called a seismic isolation rubber bearing, sandwich rubber pad, etc.). Laminated rubber bearings are structural components with relatively low horizontal stiffness and relatively high vertical stiffness. The lower horizontal stiffness allows them to withstand large horizontal deformations, while the higher vertical stiffness allows them to serve as a component of the load-bearing system.

[0003] A search revealed that patent document CN115126110B discloses a vertical variable stiffness three-dimensional seismic isolation bearing, comprising a laminated rubber seismic isolation bearing. An upper connecting plate is connected to the bottom surface of the laminated rubber seismic isolation bearing. A lower connecting plate is arranged parallel to the upper connecting plate below it. Vertical telescopic guide rods are evenly distributed between the upper and lower connecting plates. Multiple tracks are radially arranged on the top surface of the lower connecting plate, and a slider is mounted on each track. A spring mechanism is hinged to the slider, and the spring mechanism is vertically arranged with its top hinged to the bottom surface of the upper connecting plate. A connecting rod is arranged between the center of the bottom surface of the slider and the upper connecting plate, with both ends of the connecting rod hinged to the slider and the upper connecting plate, respectively.

[0004] The spring mechanism and connecting rod in the aforementioned seismic isolation bearing are designed separately. Under static load, the spring mechanism remains vertical, equivalent to a common helical spring. During vibration, the connecting rod causes the spring mechanism to tilt, generating a force with negative stiffness characteristics, which shares the load with the vertical force generated by the helical spring. Analysis shows that the aforementioned spring mechanism lacks adjustment functionality. However, after the seismic isolation bearing is manufactured and assembled, the initial stiffness of the spring mechanism required for different application scenarios varies. Since the aforementioned spring mechanism lacks adjustment functionality, the aforementioned seismic isolation bearing cannot meet the requirements for adaptive adjustment and assembly. Even if those skilled in the art attempt to add conventional adjustment functions to the spring mechanism, because the connecting rod is inclined and the spring mechanism is vertical, and both the bottom ends of the connecting rod and the bottom end of the spring mechanism are mounted on the slider, when the spring mechanism is stretched or shortened vertically, the connecting rod needs to adaptably and synchronously tilt to drive the slider to slide. The sliding of the slider will then synchronously drive the spring mechanism to tilt. Ultimately, after the initial stiffness of the spring mechanism is adjusted, it will become tilted, which will disrupt the original vertical force-bearing layout of the spring mechanism and affect its normal working performance. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing an adjustable three-dimensional seismic isolation bearing mechanism, which solves the problem that traditional three-dimensional seismic isolation bearings are difficult to adjust flexibly and accurately according to actual engineering needs without destroying their original working posture after assembly.

[0006] To address the above problems, the present invention provides the following technical solution: An adjustable three-dimensional seismic isolation bearing mechanism includes an upper bearing, a lower bearing, and a linkage damper for connecting the upper bearing and the lower bearing. The linkage damper includes an upper transition plate, a lower transition plate, and a middle frame arranged in a straight line. The opposite ends of the upper and lower transition plates are universally hinged to the upper and lower supports, respectively. The middle frame is located between the upper and lower transition plates, and the near ends of the upper and lower transition plates are dampedly inserted into the middle frame. The linkage damper also includes an elastic element located in the middle frame. One end of the elastic element is fixedly connected to the upper adapter plate, and the other end is fixedly connected to an adjustment plate. The middle frame has a sliding groove along its length for the adjustment plate to slide on, so that the elastic element is compressed or stretched when the adjustment plate slides on the sliding groove.

[0007] As a further aspect of the present invention: a slider is fixedly provided at one end of the adjusting plate facing the slide groove, and the slider is slidably disposed in the slide groove to realize the adjusting plate being slidably installed on the slide groove; the slider is provided with a locking element for locking its position on the slide groove.

[0008] As a further aspect of the present invention: the locking component includes a shaped block slidably mounted on the slider, and the shaped block can move toward or away from the adjusting plate. The adjusting plate has an opening groove adapted to the shape of the shaped block at one end facing the shaped block and on the side wall of the slide groove. The shaped block has a first working state and a second working state. When the irregular block is in the first working state, the irregular block is engaged in the opening slot on the slide groove, thereby locking the slider on the slide groove. When the irregular block is in the second working state, the irregular block is engaged in the opening groove of the adjustment plate, thereby releasing the slider from locking on the groove.

[0009] As a further aspect of the present invention: the lock further includes a push rod, the slider has a slot for the push rod to be inserted, and one end of the push rod is fixedly connected to the irregular block.

[0010] As a further aspect of the present invention, the locking member further includes a reset member disposed in the slot cavity and located between the push rod and the adjusting plate, the reset member being used to give the push rod a tendency to move away from the adjusting plate.

[0011] As a further aspect of the present invention: the irregular block is generally triangular in structure, and the irregular block is set in two groups and distributed on both sides of the slider.

[0012] As a further aspect of the invention, the mechanism also includes a limiting component for stopping and limiting the movement of the lower adapter plate on the intermediate frame.

[0013] As a further aspect of the present invention: the limiting component includes two sets of stop sleeves installed outside the intermediate frame, and the top of the lower adapter plate is provided with a follower pin located between the two sets of stop sleeves, and the two sets of stop sleeves are respectively located within the upward or downward movement path range of the follower pin.

[0014] As a further aspect of the present invention: the intermediate frame is provided with threaded holes, and the stop sleeve is installed on the threaded holes by fastening bolts. The threaded holes are set in multiple groups and arranged along the length of the intermediate frame to realize the position of the stop sleeve is adjustable.

[0015] As a further aspect of the present invention: a drive source is provided at the top of the lower support, and the bottom of the lower adapter plate is universally hinged to the execution end of the drive source. The position of the lower adapter plate can be adjusted by the drive source to achieve the adjustment of the angle between the length direction and the vertical direction of the linkage damper.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By linearly arranging the upper and lower transition plates with the intermediate frame and employing damped plug-in connections, efficient force transmission and a compact structure are ensured, constituting the basic functional requirements. Simultaneously, the elastic element is embedded within the intermediate frame, and its compression or tension is directly achieved by adjusting the sliding of the adjusting plate within the groove. This enables stepless, linear adjustment of the damper's stiffness or preload. Compared to existing dampers, the built-in adjustment mechanism of this invention does not alter the external connection or spatial orientation of the support. The adjustment process is safe and intuitive, improving the adaptability of the seismic isolation bearing to different engineering scenarios and the convenience of assembly and debugging.

[0017] 2. By fixing a slider to the adjustment plate and constraining it to slide within a groove, a smooth and stable adjustment process is ensured, preventing the adjustment plate from tilting or jamming under force. Simultaneously, a locking mechanism is added to lock the slider's position, allowing it to be securely fixed immediately after adjustment to the target position. This prevents accidental displacement of the slider due to vibration or other factors during use, thus ensuring the long-term stability of the seismic isolation bearing performance.

[0018] 3. By using bidirectional movable irregular blocks and engaging them with the opening slots on the sidewall of the slide or the adjustment plate, two working states, locking and unlocking, can be achieved. This design utilizes the shape of the irregular blocks to achieve surface contact locking, resulting in high locking force and good impact and fatigue resistance.

[0019] 4. By setting a reset component between the push rod and the adjusting plate, the irregular block can automatically return to the default locked state under the elastic force of the reset component after the external force on the push rod is released.

[0020] 5. The irregularly shaped blocks are designed with a triangular structure, utilizing the stability of the triangle to ensure more reasonable force distribution during locking and reduce the risk of deformation and damage. Simultaneously, two sets of irregularly shaped blocks are placed on both sides of the slider, achieving symmetrical dual-point locking. This balances and counteracts lateral or torsional forces from different directions, preventing unilateral warping or wobbling of the slider during locking and ensuring absolute stability in the locked state.

[0021] 6. By adding a limiting component for stopping and limiting, the travel of the lower adapter plate relative to the intermediate frame can be precisely limited, preventing the elastic components from being over-compressed or stretched and failing under unexpected loads such as earthquakes. It can also set safety boundaries during daily adjustments, protecting the internal mechanical structure and greatly improving the working reliability and service life of the entire seismic isolation bearing mechanism.

[0022] 7. The limit component adopts the form of follower pin and two sets of stop sleeves. When the movement of the lower adapter plate drives the follower pin to touch the upper or lower stop sleeve, the movement is immediately blocked.

[0023] 8. By installing stop sleeves on multiple sets of threaded holes, the positions of the upper and lower stop points can be flexibly adjusted according to different seismic isolation design requirements or specific parameters of elastic elements. This design allows seismic isolation bearings of the same specification to be adapted to different allowable displacement values ​​through simple adjustments, enhancing the versatility of the product and the flexibility of engineering applications.

[0024] 9. By setting a drive source and connecting a lower adapter plate to the lower support, the angle between the linkage damper and the vertical line can be adjusted. This not only allows for precise setting of the initial tilt angle of the support in the early stages of installation to adapt to complex foundations, but also provides the possibility of achieving variable stiffness or adaptive seismic isolation. The dynamic response of the support under different seismic levels can be optimized by adjusting the angle in real time or in stages. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the linkage damper in this invention; Figure 4 yes Figure 3Enlarged structural diagram at point C; Figure 5 This is a schematic diagram of the three-dimensional structure of the slider and two sets of irregularly shaped blocks in this invention; Figure 6 yes Figure 3 A schematic diagram of a 3D structure with one set of long boards removed from the current state; Figure 7 yes Figure 6 Enlarged structural diagram at point D in the diagram; Figure 8 This is a front view schematic diagram of the slider and two sets of irregularly shaped blocks in this invention; Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure along the BB direction; Figure 10 This is a front view schematic diagram of the linkage damper in this invention; Figure 11 yes Figure 10 Schematic diagram of the cross-sectional structure along the AA direction; Figure 12 yes Figure 11 A schematic diagram of the intermediate frame structure in the current state; Figure 13 yes Figure 11 A schematic diagram of the upper adapter plate structure in the specified state; Figure 14 yes Figure 11 A schematic diagram of the lower adapter plate structure in the specified state.

[0027] In the diagram: 1. Upper support; 2. Lower support; 3. Linkage damper; 301. Upper adapter plate; 302. Lower adapter plate; 303. Intermediate frame; 304. Elastic element; 305. Adjusting plate; 4. Slide groove; 5. Slider; 6. Irregular block; 7. Open slot; 8. Push rod; 9. Cavity; 10. Reset element; 11. Stop sleeve; 12. Follower pin; 13. Threaded hole; 14. Fastening bolt; 15. Drive source; 16. Limiting slot; 17. Transition rod; 18. Extension plate. Detailed Implementation

[0028] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-2As shown, an adjustable three-dimensional seismic isolation bearing mechanism includes an upper bearing 1 for connection to a superstructure (e.g., a building), a lower bearing 2 for connection to the foundation, and a linkage damper 3 for connecting the upper bearing 1 and the lower bearing 2. The upper bearing 1 and the lower bearing 2 are of conventional shapes and sizes found in the prior art.

[0030] like Figures 10-14 As shown, the design of the above-mentioned linkage damper 3 includes an upper transition plate 301, a lower transition plate 302, and a middle frame 303 arranged in a straight line. The upper transition plate 301 and the lower transition plate 302 are located at both ends, and the middle frame 303 is located in the middle. The opposite ends of the upper transition plate 301 and the lower transition plate 302 are universally hinged to the upper support 1 and the lower support 2, respectively. The near ends of the upper transition plate 301 and the lower transition plate 302 are dampedly inserted into the middle frame 303 so as to provide damping force when relative motion occurs, that is, to consume energy, suppress vibration, or slow down motion.

[0031] The layout relationship between the upper adapter plate 301, the lower adapter plate 302, and the intermediate frame 303 can be determined by... Figure 11 To indicate, the structure of the intermediate frame 303 can be represented by... Figure 12 It is represented by two sets of symmetrical long plates; the structure of the upper adapter plate 301 can be composed of... Figure 13 It is indicated that its top end has a ball head for universal hinge with the upper support 1, and an extension plate 18 is provided in the middle; the structure of the lower adapter plate 302 can be made by Figure 14 It is indicated that its bottom end has a ball head for universal hinge with the lower support 2, and its top end is installed in a damped plug-in manner with the inner wall of the two sets of long plates of the intermediate frame 303.

[0032] For example Figures 1-2As shown, the linkage damper 3 is arranged in an inclined manner, with its length direction having a certain angle with the vertical direction. Six sets of linkage dampers 3 are evenly distributed between the upper support 1 and the lower support 2. When applying different types of superstructures, the inclination angle of the linkage damper 3 can be adjusted according to the corresponding type of superstructure, that is, the angle between its length direction and the vertical direction can be changed, thus achieving adjustable stroke of the three-dimensional seismic isolation bearing. Specifically: a receiving groove is provided at the top of the lower support 2, and a drive source (such as a hydraulic cylinder) 15 is placed inside the receiving groove. The ball joints at the bottom of the two sets of lower adapter plates 302 are universally hinged to the output shaft of the drive source 15. The inclination angle of the two sets of linkage dampers 3 can be adjusted by adjusting the extension of the piston rod of the drive source 15. When the linkage damper 3 is set to six sets, the drive source 15 is adapted to be set to three sets. When the piston rods of the three drive sources 15 extend simultaneously, the tilt angle of the six sets of linkage dampers 3 decreases. At this time, the vertical stroke of the three-dimensional seismic isolation bearing of this application is larger, and the horizontal stroke is smaller. When the piston rods of the three drive sources 15 retract simultaneously, the tilt angle of the six sets of linkage dampers 3 increases, the vertical stroke of the three-dimensional seismic isolation bearing is smaller, and the horizontal stroke is larger.

[0033] Furthermore, elastic elements (such as springs) 304 are fixedly installed at the top and bottom of the extension plate 18 of the upper transition plate 301. Two sets of elastic elements 304 are arranged along the length of the linkage damper 3 on one side of the upper transition plate 301. Adjusting plates 305 are fixedly installed at the ends of the two sets of elastic elements 304 that are far apart from each other. The adjusting plates 305 are slidably mounted on the intermediate frame 303 along the length of the linkage damper 3. That is, the upper transition plate 301 and the intermediate frame 303 are connected by elastic elements 304. When the position of the adjusting plate 305 on the intermediate frame 303 is changed, since one end of the elastic element 304 is fixedly mounted on the extension plate 18, compression or tension of the elastic element 304 can be achieved, thus changing the initial stiffness of the elastic element 304. Preferably, two sets of elastic elements 304 are also arranged on the other side of the upper transition plate 301. This layout can be achieved by… Figure 11 To represent it.

[0034] like Figures 3-7 As shown, for the sliding installation of the adjustment plate 305 on the intermediate frame 303, a groove 4 can be provided on the intermediate frame 303 along its length direction. At the same time, a slider 5 is fixedly provided at the end of the adjustment plate 305 facing the groove 4. The slider 5 is slidably installed on the groove 4 to realize the sliding installation of the adjustment plate 305 on the groove 4.

[0035] To enable the adjusting plate 305 to be locked in position on the slide groove 4, this application provides a locking element on the slider 5 for locking itself onto the slide groove 4. Specifically, as shown... Figures 8-9As shown, the locking mechanism includes a limiting groove 16 opened at the end of the slider 5 facing the adjusting plate 305. A transition rod 17 is slidably installed in the limiting groove 16, and irregularly shaped blocks 6 are fixedly installed at both ends of the transition rod 17. Correspondingly, the end of the adjusting plate 305 facing the irregularly shaped block 6 and the side wall of the slide groove 4 are both provided with opening grooves 7 that are adapted to the shape of the irregularly shaped block 6. Depending on the position of the irregularly shaped block 6 on the slider 5, the irregularly shaped block 6 can be divided into a first working state and a second working state. In the first working state, the irregularly shaped block 6 is engaged in the opening groove 7 on the slide groove 4, and the slider 5 is locked on the slide groove 4. This state can be changed by... Figure 4 To represent this, at the same time, the state of the irregular block 6 on the slider 5 can be determined by... Figure 9 To represent; Figure 9 In this state, if the transition rod 17 is driven downward, the irregular block 6 will be driven downward, thus referencing its movement to... Figure 4 The state shown indicates that the irregular block 6 moves from right to left within the opening slot 7 on the slide 4. Continue driving the irregular block 6 until it completely disengages from the opening slot 7 on the slide 4. Since the end of the adjusting plate 305 facing the slider 5 also has an opening slot 7, the irregular block 6 can be inserted into the opening slot 7 on the adjusting plate 305, releasing the slider 5 from its confinement within the slide 4. The slider 5 can then move within the slide 4, adjusting the position of the adjusting plate 305, which in turn stretches and compresses the elastic element 304, achieving initial stiffness adjustment of the linkage damper 3.

[0036] In order to facilitate the movement of the transition rod 17 within the limiting groove 16, this application provides a groove 9 on the slider 5. A push rod 8 is installed in the groove 9 via a movable pin. The push rod 8 is fixedly connected to the transition rod 17, which is equivalent to the push rod 8 being indirectly connected to the irregular block 6. Subsequently, technicians can drive the irregular block 6 to move by driving the push rod 8.

[0037] exist Figure 9 In the indicated state, the downward movement of push rod 8 can cause the irregularly shaped block 6 to move downward accordingly. When the restriction on push rod 8 is released, in order to facilitate the upward reset of the irregularly shaped block 6, this application has a reset component (such as a spring) 10 fixedly provided at the bottom end of push rod 8. Figure 9 The downward motion of the irregular block 6 in the state is applied to Figure 4 In the indicated state, the push rod 8 drives the irregularly shaped block 6 from right to left out of the opening slot 7 of the slide 4 and into the opening slot 7 of the adjusting plate 305 until the restriction on the slider 5 is released. At this time, the reset member 10 will be compressed. When the action on the push rod 8 is released, under the action of the reset member 10, the irregularly shaped block 6 can move from left to right from the opening slot 7 of the adjusting plate 305 until it is locked again in the opening slot 7 of the slide 4, thus locking the slider 5 again.

[0038] The design of the irregular block 6 can be triangular, rectangular, etc., and the corresponding opening slot 7 can be triangular or rectangular. The shape is designed to prevent the irregular block 6 from rotating in the opening slot 7. This paper does not limit the shape.

[0039] Since the lower adapter plate 302 and the two sets of long plates of the intermediate frame 303 are connected by a damped plug, relative movement will occur between the lower adapter plate 302 and the two sets of long plates. In order to prevent the lower adapter plate 302 from detaching from the two sets of long plates of the intermediate frame 303 due to excessive relative movement, this application also includes a limiting component for stopping and limiting the movement of the lower adapter plate 302 on the intermediate frame 303.

[0040] like Figure 3 As shown, specifically, the limiting component includes two sets of stop sleeves 11 installed outside the intermediate frame 303. The top of the lower adapter plate 302 is provided with a follower pin 12 located between the two sets of stop sleeves 11, and the two sets of stop sleeves 11 are respectively located within the upward or downward movement path range of the follower pin 12. When the lower adapter plate 302 moves upward, it can drive the follower pin 12 to move upward, and the upper stop sleeve 11 can stop the follower pin 12; when the lower adapter plate 302 moves downward, it can drive the follower pin 12 to move downward, and the lower stop sleeve 11 can stop the follower pin 12.

[0041] Of course, the range of motion of the lower adapter plate 302 varies depending on the application scenario. Therefore, this application sets the two sets of stop sleeves 11 to be position-adjustable. Specifically, threaded holes 13 are provided on the intermediate frame 303, and the stop sleeves 11 are installed on the threaded holes 13 by fastening bolts 14. At the same time, multiple sets of threaded holes 13 are provided and arranged along the length of the intermediate frame 303. The stop sleeves 11 can be installed on the threaded holes 13 at the corresponding positions by fastening bolts 14 according to the corresponding position requirements.

[0042] by Figure 2Taking the illustrated state as an example, considering a set of drive sources 15 and the two sets of linkage dampers 3 on them as a whole, there are three sets of wholes in this figure: the left whole, the middle whole, and the right whole. Under the above definition, and assuming that the upper support 1 is fixedly connected to the building and the lower support 2 is fixedly connected to the foundation, if the seismic wave generates a downward pulling force, the foundation will cause the lower support 2 to move downward relative to the upper support 1, and the linkage dampers 3 on all three sets of wholes will be stretched downward simultaneously. If the seismic wave generates a horizontal thrust from left to right, the foundation will cause the lower support 2 to push to the right relative to the upper support 1, the axis of the linkage damper 3 on the left whole will shorten, and the damper will be in a compressed state. The axis of the linkage damper 3 on the right whole will be lengthened, and the damper will be in a tensile state. The linkage damper 3 on the middle whole will be in a tensile or compressed state depending on its angle with the direction of the horizontal thrust.

[0043] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An adjustable three-dimensional seismic isolation bearing mechanism, characterized in that, It includes an upper support (1), a lower support (2), and a linkage damper (3) for connecting the upper support (1) and the lower support (2). The linkage damper (3) includes an upper transition plate (301), a lower transition plate (302), and a middle frame (303) arranged in a straight line. The opposite ends of the upper transition plate (301) and the lower transition plate (302) are universally hinged to the upper support (1) and the lower support (2), respectively. The middle frame (303) is located between the upper transition plate (301) and the lower transition plate (302), and the near ends of the upper transition plate (301) and the lower transition plate (302) are dampedly inserted into the middle frame (303). The linkage damper (3) also includes an elastic element (304) located in the intermediate frame (303). One end of the elastic element (304) is fixedly connected to the upper adapter plate (301), and the other end is fixedly connected to an adjusting plate (305). The intermediate frame (303) has a groove (4) along its length for sliding installation of the adjusting plate (305), so that the elastic element (304) is compressed or stretched when the adjusting plate (305) slides on the groove (4).

2. The adjustable three-dimensional seismic isolation bearing mechanism according to claim 1, characterized in that, The adjusting plate (305) is fixedly provided with a slider (5) at one end facing the slide groove (4), and the slider (5) is slidably disposed in the slide groove (4) so ​​as to realize the sliding installation of the adjusting plate (305) on the slide groove (4); the slider (5) is provided with a locking element for locking its position on the slide groove (4).

3. The adjustable three-dimensional seismic isolation bearing mechanism according to claim 2, characterized in that, The locking component includes a shaped block (6) that is slidably mounted on the slider (5), and the shaped block (6) can move toward or away from the adjusting plate (305). The adjusting plate (305) and the side wall of the slide groove (4) are provided with openings (7) that are adapted to the shape of the shaped block (6). The shaped block (6) has a first working state and a second working state. When the irregular block (6) is in the first working state, the irregular block (6) is engaged in the opening slot (7) on the slide groove (4) to lock the slider (5) on the slide groove (4); When the irregular block (6) is in the second working state, the irregular block (6) is engaged in the opening groove (7) on the adjustment plate (305), thereby releasing the locking of the slider (5) on the slide groove (4).

4. The adjustable three-dimensional seismic isolation bearing mechanism according to claim 3, characterized in that, The lock also includes a push rod (8), and the slider (5) has a slot (9) for the push rod (8) to be inserted into, and one end of the push rod (8) is fixedly connected to the irregular block (6).

5. An adjustable three-dimensional seismic isolation bearing mechanism according to claim 4, characterized in that, The locking mechanism also includes a reset member (10) disposed in the slot (9) and located between the push rod (8) and the adjusting plate (305), the reset member (10) being used to make the push rod (8) have a tendency to move away from the adjusting plate (305).

6. An adjustable three-dimensional seismic isolation bearing mechanism according to any one of claims 3-5, characterized in that, The irregular block (6) is triangular in structure, and the irregular block (6) is set in two groups and distributed on both sides of the slider (5).

7. An adjustable three-dimensional seismic isolation bearing mechanism according to any one of claims 1-5, characterized in that, The mechanism also includes a limiting component for stopping and limiting the movement of the lower adapter plate (302) on the intermediate frame (303).

8. An adjustable three-dimensional seismic isolation bearing mechanism according to claim 7, characterized in that, The limiting component includes two sets of stop sleeves (11) installed outside the middle frame (303). The top of the lower adapter plate (302) is provided with a follower pin (12) located between the two sets of stop sleeves (11), and the two sets of stop sleeves (11) are respectively located within the upward or downward movement path range of the follower pin (12).

9. An adjustable three-dimensional seismic isolation bearing mechanism according to claim 8, characterized in that, The intermediate frame (303) has a threaded hole (13), and the stop sleeve (11) is installed on the threaded hole (13) by fastening bolts (14). The threaded holes (13) are set in multiple groups and arranged along the length of the intermediate frame (303) so that the position of the stop sleeve (11) can be adjusted.

10. An adjustable three-dimensional seismic isolation bearing mechanism according to any one of claims 1-5, characterized in that, The lower support (2) is provided with a drive source (15) at the top. The bottom of the lower adapter plate (302) is universally hinged to the execution end of the drive source (15). The position of the lower adapter plate (302) can be adjusted by the drive source (15) to adjust the angle between the length direction and the vertical direction of the linkage damper (3).

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