A kind of building seismic isolation rubber bearing

Abstract

The present invention relates to the technical field of building seismic isolation, and discloses a building seismic isolation rubber bearing, including a bottom connecting plate and a top connecting plate, a damping rubber body is arranged between the bottom connecting plate and the top connecting plate, a first through hole is arranged in the middle of the damping rubber body, and a plurality of fixing grooves are arranged in the axial direction in the damping rubber body, and a metal plate is arranged in the fixing groove. The present invention is provided with a bottom connecting plate with an adjusting rod, a part of the adjusting rod is inserted into the damping rubber body, and one end of the adjusting rod is movably connected to the bottom connecting plate. After the vibration ends, if the damping rubber body cannot return to its original state, at this time, it is only necessary to apply force to one end of the adjusting rod by a hydraulic mechanism in a pushing or pulling manner, and the damping rubber body can be quickly reset under the push of the adjusting rod, and the operation is convenient and quick.

Description

Technical Field

[0001] The invention relates to the technical field of building seismic isolation, in particular to a building seismic isolation rubber bearing. Background Art

[0002] Earthquakes are vibrations caused by the rapid release of energy from the earth's crust. Human society is still unable to avoid this natural phenomenon. The casualties and economic losses caused by earthquakes are mostly due to the collapse of buildings. Therefore, countries around the world are committed to doing a good job in earthquake-resistant disaster reduction, improving the level of earthquake-resistant fortification of construction projects, and improving the earthquake resistance of construction projects. As a technology that can significantly improve the earthquake resistance of buildings, seismic isolation technology is gaining more and more applications. It uses a flexible connection between the upper structure and the foundation of the building and sets up a sufficiently safe seismic isolation system. Due to the "seismic isolation" and "shock absorption" effects of the seismic isolation layer, when an earthquake occurs, the upper structure of the building moves approximately horizontally, and the structural response is greatly reduced.

[0003] Rubber seismic isolation bearings are a relatively common seismic isolation device, which are mainly composed of rubber layers and steel plate layers stacked in an alternating manner. The seismic isolation principle is: through the shear hysteresis deformation of the rubber and the dissipation of a large amount of seismic energy, the seismic energy of the upper structure is reduced to ensure the safety of the structure. Conventional rubber seismic isolation bearings have residual deformations that cannot self-reset in the absence of external forces after the vibration ends. If they are not adjusted, it will bring great safety hazards to the building. However, how to adjust them is also a difficult problem. In the existing technology, most of them use hydraulic devices to push the building as a whole, so as to achieve the purpose of resetting the rubber bearings. During the entire resetting process, there are problems such as difficulty in determining the force application point and easy damage to the building. Summary of the invention

[0004] The present invention provides a building seismic isolation rubber bearing, which has the beneficial effect of being able to more conveniently reset the device when residual deformation that cannot be reset by itself occurs, and solves the problem mentioned in the above background technology: after the vibration ends, in the absence of external force, the bearing has residual deformation that cannot be reset by itself, and it is difficult to complete the reset of the rubber bearing by conventional means.

[0005] The present invention provides the following technical solution: a building seismic isolation rubber bearing, comprising a bottom connecting plate and a top connecting plate, a damping rubber body is arranged between the bottom connecting plate and the top connecting plate, a first through hole is arranged in the middle of the damping rubber body, and a plurality of fixing grooves are arranged in the axial direction in the damping rubber body, and a metal plate is arranged in the fixing groove;

[0006] A movable seat is provided at one end of the top connecting plate away from the damping rubber body, and a limiting bolt is provided on the movable seat, a second through hole is provided on the top connecting plate, one end of the limiting bolt passes through the second through hole and is connected to the movable seat, an extension seat is provided at one end of the bottom connecting plate away from the damping rubber body, and an adjusting rod is provided at the extension seat, one end of the adjusting rod is movably connected to the extension seat through a multi-directional connecting mechanism, and the other end of the adjusting rod passes through the first through hole and extends into the movable seat.

[0007] As an optional solution of the building seismic isolation rubber bearing described in the present invention, the multi-directional connection mechanism includes a base, the base is rotatably connected to the bottom connecting plate through a bearing, and a connecting seat is provided in the base, a mounting groove is provided in the middle of the connecting seat, and the connecting seat is rotatably connected to the base, one end of the adjusting rod passes through the mounting groove, and the adjusting rod is rotatably connected to the connecting seat through a rotating shaft.

[0008] As an optional solution of the building seismic isolation rubber bearing described in the present invention, wherein: a damping mechanism is provided at one end of the movable seat close to the damping rubber body, and the damping mechanism includes a cylinder body and a connecting rod, a first liquid storage chamber is provided in the cylinder body, and a first piston is provided in the first liquid storage chamber, one end of the connecting rod is fixedly connected to the movable seat, and the other end of the connecting rod passes through the cylinder body and is fixedly connected to the first piston, and one end of the cylinder body is fixedly connected to the top connecting plate.

[0009] As an optional solution of the building seismic isolation rubber bearing described in the present invention, the cylinder body is also provided with a second liquid storage chamber, and the second liquid storage chamber is separated from the first liquid storage chamber by a partition, and the partition is provided with a first opening and a second opening for connecting the first liquid storage chamber and the second liquid storage chamber.

[0010] As an optional solution of the building seismic isolation rubber bearing described in the present invention, wherein: a first flow limiting plate is provided at the first opening, one end of the first flow limiting plate is rotatably connected to the partition, and a flow limiting mechanism for limiting the flow of the second opening is provided on one side of the partition;

[0011] The flow limiting mechanism includes a gate plate, and the gate plate is slidably connected to the partition plate. A transmission rod is provided on the outer side of the cylinder body, and the transmission rod is elastically connected to the cylinder body through a return spring, and one end of the transmission rod passes through the cylinder body and is fixedly connected to the gate plate.

[0012] As an optional scheme of the building seismic isolation rubber bearing described in the present invention, wherein: a speed limiting mechanism for limiting the speed of the transmission rod is provided in the cylinder body, and the speed limiting mechanism includes a sleeve, the sleeve is sleeved on the outer side of the transmission rod, and a second piston is provided in the sleeve, the second piston is fixedly connected to the transmission rod, a first flow hole is provided on the second piston, and a second flow limiting plate is provided on one side of the first flow hole, a second flow hole is provided on the second flow limiting plate, and one end of the second flow limiting plate is rotatably connected to the second piston.

[0013] As an optional solution of the building seismic isolation rubber bearing described in the present invention, a movable plate is provided on the lower side of the movable seat, and the movable plate is slidably connected to the movable seat, one end of the movable plate is in contact with the adjustment rod, and the other end of the movable plate is in contact with the transmission rod.

[0014] As an optional solution of the building seismic isolation rubber bearing described in the present invention, the extension seat is a hollow structure, and a plurality of third openings are opened on the extension seat, a leaf spring fixing seat is provided in the extension seat, and a plurality of leaf springs are provided in the leaf spring fixing seat, and both ends of the leaf spring are rotatably connected to the leaf spring fixing seat.

[0015] As an optional solution of the building seismic isolation rubber bearing described in the present invention, a joint is provided at one end of the adjustment rod close to the extension seat, and the joint is detachably connected to the adjustment rod through a thread, and a pull ring is provided on the joint.

[0016] As an optional solution of the building seismic isolation rubber bearing described in the present invention, fixed wing plates are provided on both sides of the movable seat, and movable wing plates are provided on both front and rear ends of the movable seat, and the movable wing plates are detachably connected to the movable seat by bolts.

[0017] The present invention has the following beneficial effects:

[0018] 1. This kind of building seismic isolation rubber bearing is provided with a bottom connecting plate with an adjusting rod, a part of the adjusting rod is inserted into the damping rubber body, and one end of the adjusting rod is movably connected to the bottom connecting plate. After the vibration ends, if the damping rubber body cannot return to its original state, at this time, it is only necessary to apply force to one end of the adjusting rod by pushing or pulling through a hydraulic mechanism. Under the push of the adjusting rod, the damping rubber body can be quickly reset, and the operation is convenient and quick.

[0019] 2. The building seismic isolation rubber bearing is provided with a damping mechanism, wherein a second liquid storage chamber and a first liquid storage chamber are provided in the damping mechanism, the second liquid storage chamber and the first liquid storage chamber are filled with damping liquid, and a first piston is provided in the first liquid storage chamber. When the first piston moves, the damping liquid in the first liquid storage chamber can be pumped into the second liquid storage chamber, or the damping liquid in the second liquid storage chamber can be pumped into the first liquid storage chamber. In the process of the damping liquid flowing and the mutual friction with the cylinder body, part of the vibration energy can be consumed, thereby achieving a shock-absorbing effect;

[0020] By setting the gate plate, the gate plate will seal a part of the second opening. A transmission rod for adjusting the position of the gate plate is also provided at the cylinder body. The transmission rod is elastically connected to the cylinder body. Correspondingly, a movable plate used in conjunction with it is also provided in the movable seat. The movable plate is slidably connected to the movable seat. When the adjusting rod is deflected, the end of the adjusting rod contacts the movable plate, and the movable plate pushes the transmission rod to move under the drive of the adjusting rod. In this process, the gate plate moves under the drive of the transmission rod, and then further closes the second opening, causing the flow rate of the second opening to become smaller. As the fluidity of the damping fluid at the second opening becomes worse, the damping mechanism becomes tougher, and can more effectively cope with large-amplitude earthquakes. The present invention can perform adaptive adjustments according to the magnitude of the vibration amplitude by setting a second opening with a variable flow rate, and can better cope with earthquakes of different amplitudes.

[0021] 3. This kind of building seismic isolation rubber bearing is equipped with a leaf spring fixing seat at the extension seat, and four groups of leaf springs are arranged in the leaf spring fixing seat. When the adjusting rod is deflected under the drive of the damping rubber body, its bottom end will conflict with the leaf spring in the leaf spring fixing seat. Through the cooperation of the leaf spring and the damping rubber body, the shock absorption effect of this technical solution can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal structure of the damping rubber body of the present invention.

[0024] Figure 3 It is a schematic diagram of the top structure of the top connecting plate of the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the cylinder body of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the relative positions of the speed limiting mechanism and the partition of the present invention.

[0027] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure in the middle.

[0028] Figure 7 It is a schematic diagram of the structure of the multi-directional connection mechanism of the present invention.

[0029] Figure 8 It is a schematic diagram of the internal structure of the leaf spring fixing seat of the present invention.

[0030] In the figure: 1, bottom connecting plate; 2, top connecting plate; 201, second through hole; 3, damping rubber body; 301, first through hole; 302, fixing groove; 303, metal plate; 4, movable seat; 5, limit bolt; 6, extension seat; 601, third opening; 7, adjustment rod; 701, joint; 702, pull ring; 8, base; 9, connecting seat; 901, mounting groove; 10, cylinder body; 1001, first liquid storage chamber; 1002, first Piston; 1003, second liquid storage chamber; 11, connecting rod; 12, partition; 13, first opening; 14, second opening; 15, first flow limiting plate; 16, gate; 17, transmission rod; 18, return spring; 19, sleeve; 20, second flow hole; 21, second piston; 22, first flow hole; 23, second flow limiting plate; 24, movable plate; 25, leaf spring fixing seat; 26, leaf spring; 27, fixed wing plate; 28, movable wing plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figures 1 to 8 A building seismic isolation rubber bearing comprises a bottom connecting plate 1 and a top connecting plate 2, a damping rubber body 3 is arranged between the bottom connecting plate 1 and the top connecting plate 2, a first through hole 301 is arranged in the middle of the damping rubber body 3, and a plurality of fixing grooves 302 are arranged in the axial direction in the damping rubber body 3, and a metal plate 303 is arranged in the fixing groove 302;

[0033] A movable seat 4 is provided at one end of the top connecting plate 2 away from the damping rubber body 3, and a limiting bolt 5 is provided on the movable seat 4. A second through hole 201 is provided on the top connecting plate 2, and one end of the limiting bolt 5 passes through the second through hole 201 and is connected to the movable seat 4. An extension seat 6 is provided at one end of the bottom connecting plate 1 away from the damping rubber body 3, and an adjusting rod 7 is provided at the extension seat 6. One end of the adjusting rod 7 is movably connected to the extension seat 6 through a multi-directional connecting mechanism, and the other end of the adjusting rod 7 passes through the first through hole 301 and extends into the movable seat 4.

[0034] The multi-directional connection mechanism includes a base 8, which is rotatably connected to the bottom connecting plate 1 through a bearing, and a connecting seat 9 is provided inside the base 8. A mounting groove 901 is provided in the middle of the connecting seat 9, and the connecting seat 9 is rotatably connected to the base 8. One end of the adjusting rod 7 passes through the mounting groove 901, and the adjusting rod 7 is rotatably connected to the connecting seat 9 through a rotating shaft.

[0035] In order to improve the vertical tensile strength of the technical solution, the present application also provides a movable seat 4 at the upper end of the top connecting plate 2, and a fixed wing plate 27 and a detachable movable wing plate 28 are provided on the movable seat 4. At the same time, a limiting bolt 5 for limiting is provided between the movable seat 4 and the top connecting plate 2. The presence of the limiting bolt 5 ensures that the movable seat 4 will not be completely separated from the top connecting plate 2 during the upward movement. The two fixed wing plates 27 and the two movable wing plates 28 together form a cover, which is connected to the outer side of the top connecting plate 2 to prevent the movable seat 4 and the top connecting plate 2 from lateral displacement during vibration.

[0036] The base 8 can rotate in the horizontal direction, the adjusting rod 7 can rotate in the mounting groove 901 , and the connecting seat 9 can rotate in the base 8 .

[0037] The present application sets a bottom connecting plate 1 with an adjusting rod 7. When an earthquake occurs, the damping rubber body 3 is subjected to force and deforms. During the deformation process, since a part of the adjusting rod 7 is inserted into the damping rubber body 3, the adjusting rod 7 will also move synchronously under the push of the damping rubber body 3. The adjusting rod 7 can rotate in multiple directions under the action of the multi-directional connection mechanism, and has a wider range of applications. After the vibration ends, if the damping rubber body 3 cannot return to its original state, at this time, it is only necessary to apply force to one end of the adjusting rod 7 by pushing or pulling through the hydraulic mechanism. By pushing, the damping rubber body 3 can be quickly reset. Compared with the traditional reset method, this technical solution has the following advantages: the traditional reset method is to use a hydraulic mechanism to directly apply force to the support column at the bottom of the building. Therefore, in order to ensure the reset effect, each support column needs to be measured to determine the best force application point. The operation is complicated and easily causes damage to the building structure. According to the technical solution, there is no need to measure again through the pre-set adjustment rod 7. Force is directly applied to the adjustment rod 7, and then the damping rubber body 3 is pried back to its original position through the adjustment rod 7.

[0038] Example 2: This example is an explanation based on Example 1. For details, please refer to Figures 1 to 8A damping mechanism is provided at one end of the movable seat 4 close to the damping rubber body 3, and the damping mechanism includes a cylinder body 10 and a connecting rod 11. A first liquid storage chamber 1001 is provided in the cylinder body 10, and a first piston 1002 is provided in the first liquid storage chamber 1001. One end of the connecting rod 11 is fixedly connected to the movable seat 4, and the other end of the connecting rod 11 passes through the cylinder body 10 and is fixedly connected to the first piston 1002. One end of the cylinder body 10 is fixedly connected to the top connecting plate 2.

[0039] A second liquid storage chamber 1003 is further provided in the cylinder body 10 , and the second liquid storage chamber 1003 is separated from the first liquid storage chamber 1001 by a partition 12 , and a first opening 13 and a second opening 14 are provided on the partition 12 for connecting the first liquid storage chamber 1001 and the second liquid storage chamber 1003 .

[0040] A first flow limiting plate 15 is provided at the first opening 13, one end of the first flow limiting plate 15 is rotatably connected to the partition 12, and a flow limiting mechanism for limiting the flow of the second opening 14 is provided on one side of the partition 12;

[0041] The flow limiting mechanism includes a gate plate 16 , and the gate plate 16 is slidably connected to the partition plate 12 . A transmission rod 17 is provided on the outer side of the cylinder body 10 . The transmission rod 17 is elastically connected to the cylinder body 10 through a return spring 18 , and one end of the transmission rod 17 passes through the cylinder body 10 and is fixedly connected to the gate plate 16 .

[0042] A speed limiting mechanism for limiting the speed of the transmission rod 17 is provided in the cylinder body 10, and the speed limiting mechanism includes a sleeve 19, the sleeve 19 is sleeved on the outer side of the transmission rod 17, and a second piston 21 is provided in the sleeve 19, the second piston 21 is fixedly connected to the transmission rod 17, a first flow hole 22 is provided on the second piston 21, and a second flow limiting plate 23 is provided on one side of the first flow hole 22, a second flow limiting plate 23 is provided with a second flow hole 20, and one end of the second flow limiting plate 23 is rotatably connected to the second piston 21.

[0043] A movable plate 24 is provided at the lower side of the movable seat 4 , and the movable plate 24 is slidably connected to the movable seat 4 , one end of the movable plate 24 abuts against the adjustment rod 7 , and the other end of the movable plate 24 abuts against the transmission rod 17 .

[0044] The first liquid storage chamber 1001 is T-shaped, the second liquid storage chamber 1003 is cylindrical and is located outside the first liquid storage chamber 1001 , and a flow channel for the damping liquid to flow is opened on the partition plate 12 .

[0045] In order to improve the vertical shock absorption capacity of the present technical solution, the present technical solution is provided with a damping mechanism between the movable seat 4 and the top connecting plate 2, and a second liquid storage chamber 1003 and a first liquid storage chamber 1001 are provided in the damping mechanism, and the second liquid storage chamber 1003 and the first liquid storage chamber 1001 are filled with damping liquid, and a first piston 1002 is also provided in the first liquid storage chamber 1001. When the first piston 1002 moves, the damping liquid in the first liquid storage chamber 1001 can be pumped into the second liquid storage chamber 1003, or the damping liquid in the second liquid storage chamber 1003 can be pumped into the first liquid storage chamber 1001. In the process of the damping liquid flowing and the mutual friction with the cylinder body 10, part of the vibration energy can be consumed, thereby achieving a shock absorption effect;

[0046] Specifically, when the connecting rod 11 pulls the first piston 1002 outward, the damping fluid in the second liquid storage chamber 1003 enters the first liquid storage chamber 1001 through the second opening 14. When the connecting rod 11 pushes the first piston 1002 inward, the damping fluid in the first liquid storage chamber 1001 enters the second liquid storage chamber 1003 through the first opening 13 and the second opening 14. The gate plate 16 will seal a part of the second opening 14. A transmission rod 17 for adjusting the position of the gate plate 16 is also provided at the cylinder body 10. The transmission rod 17 is elastically connected to the cylinder body 10. Correspondingly, a movable plate 24 used in conjunction with it is also provided in the movable seat 4. The movable plate 2 4 is slidably connected with the movable seat 4. When the adjusting rod 7 is deflected, the end of the adjusting rod 7 contacts with the movable plate 24. Driven by the adjusting rod 7, the movable plate 24 pushes the transmission rod 17 to move. In this process, the gate plate 16 moves under the drive of the transmission rod 17, and then further closes the second opening 14, causing the flow of the second opening 14 to become smaller. As the fluidity of the damping fluid in the second opening 14 becomes worse, the damping mechanism becomes tougher and can more effectively cope with large-amplitude earthquakes. The present invention provides a second opening 14 with a variable flow rate, so that the damping mechanism can be adaptively adjusted according to the magnitude of the vibration amplitude, and can better cope with earthquakes of different amplitudes.

[0047] In order to prevent the transmission rod 17 from returning to its original position quickly under the drive of the return spring 18, thereby causing the adjustment effect of the second opening 14 to deteriorate, the present technical solution also provides a speed limiting mechanism for limiting the speed of the transmission rod 17 in the cylinder body 10, which includes a sleeve 19, and a damping fluid is also provided in the sleeve 19. A second piston 21 is installed on the transmission rod 17. Correspondingly, a plurality of first flow holes 22 and a second flow limiting plate 23 for blocking the first flow holes 22 are also provided on the second piston 21. The second flow limiting plate 23 can rotate in one direction. When the transmission rod 17 moves toward the inside of the cylinder body 10, the second flow limiting plate 23 is opened, and the damping fluid flows from one side of the second piston 21 to the other side of the second piston 21 through the first flow hole 22. When the transmission rod 17 returns to its original position, the second flow limiting plate 23 is closed. At this time, the damping fluid can only flow through the second flow hole 20 with a smaller flow rate on the second flow limiting plate 23, which can slow down the movement speed of the transmission rod 17.

[0048] It should be noted that, in order to ensure the stability of the second flow limiting plate 23 during operation, a torsion spring may be provided on the second flow limiting plate 23 so as to be rotationally connected to the second piston 21 via the torsion spring.

[0049] Example 3: This example is an explanation based on Example 1. For details, please refer to Figures 1 to 8 The extension seat 6 is a hollow structure, and a plurality of third openings 601 are provided on the extension seat 6. A leaf spring fixing seat 25 is provided in the extension seat 6, and a plurality of leaf springs 26 are provided in the leaf spring fixing seat 25. Both ends of the leaf spring 26 are rotatably connected to the leaf spring fixing seat 25.

[0050] A joint 701 is provided at one end of the adjusting rod 7 close to the extending seat 6 , and the joint 701 is detachably connected to the adjusting rod 7 via threads, and a pull ring 702 is provided on the joint 701 .

[0051] Fixed wing plates 27 are provided on both sides of the movable seat 4, and movable wing plates 28 are provided on both front and rear ends of the movable seat 4. The movable wing plates 28 are detachably connected to the movable seat 4 by bolts.

[0052] A joint 701 is provided at one end of the adjusting rod 7, and the joint 701 is detachably connected to the extension seat 6. When the damping rubber body 3 is reset, the adjusting rod 7 is equivalent to a lever, and joints 701 of different lengths can be replaced according to actual conditions, thereby achieving the purpose of extending the force application length of the adjusting rod 7. A pull ring 702 is provided on the joint 701. In actual operation, the adjusting rod 7 can be adjusted in the form of pushing or pulling. It is flexible to use and easy to adjust. A plurality of third openings 601 are opened on the extension seat 6. The adjusting rod 7 inside the extension seat 6 can be adjusted through the third openings 601 without opening the extension seat 6.

[0053] The main body of the damping rubber body 3 is made of rubber. The aging resistance of rubber is much lower than that of steel plate. It is easy to age and fail due to long-term use. In order to improve the safety of the building, the present technical solution also provides a leaf spring fixing seat 25 at the extension seat 6. Four groups of leaf springs 26 are arranged in the leaf spring fixing seat 25. When the adjusting rod 7 is deflected under the drive of the damping rubber body 3, its bottom end will conflict with the leaf spring 26 in the leaf spring fixing seat 25. Through the cooperation of the leaf spring 26 and the damping rubber body 3, the shock absorption effect of the present technical solution can be effectively improved.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A building seismic isolation rubber bearing, comprising a bottom connecting plate (1) and a top connecting plate (2), wherein a damping rubber body (3) is provided between the bottom connecting plate (1) and the top connecting plate (2), characterized in that: A first through hole (301) is provided in the middle of the damping rubber body (3), and a plurality of fixing grooves (302) are provided in the damping rubber body (3) along the axial direction, and a metal plate (303) is provided in the fixing groove (302); A movable seat (4) is provided at one end of the top connecting plate (2) away from the damping rubber body (3), and a limiting bolt (5) is provided on the movable seat (4); a second through hole (201) is provided on the top connecting plate (2), one end of the limiting bolt (5) passes through the second through hole (201) and is connected to the movable seat (4); an extension seat (6) is provided at one end of the bottom connecting plate (1) away from the damping rubber body (3), and an adjustment rod (7) is provided at the extension seat (6); one end of the adjustment rod (7) is movably connected to the extension seat (6) via a multi-directional connection mechanism, and the other end of the adjustment rod (7) passes through the first through hole (301) and extends into the movable seat (4); The multi-directional connection mechanism comprises a base (8), the base (8) being rotatably connected to the bottom connection plate (1) via a bearing, a connection seat (9) being provided inside the base (8), a mounting groove (901) being provided in the middle of the connection seat (9), and the connection seat (9) being rotatably connected to the base (8), one end of the adjustment rod (7) passing through the mounting groove (901), and the adjustment rod (7) being rotatably connected to the connection seat (9) via a rotating shaft.

2. The building seismic isolation rubber bearing according to claim 1, characterized in that: A damping mechanism is provided at one end of the movable seat (4) close to the damping rubber body (3), and the damping mechanism comprises a cylinder body (10) and a connecting rod (11); a first liquid storage chamber (1001) is provided in the cylinder body (10), and a first piston (1002) is provided in the first liquid storage chamber (1001); one end of the connecting rod (11) is fixedly connected to the movable seat (4), and the other end of the connecting rod (11) passes through the cylinder body (10) and is fixedly connected to the first piston (1002); one end of the cylinder body (10) is fixedly connected to the top connecting plate (2).

3. The building seismic isolation rubber bearing according to claim 2, characterized in that: A second liquid storage chamber (1003) is also provided in the cylinder body (10), and the second liquid storage chamber (1003) is separated from the first liquid storage chamber (1001) by a partition (12), and the partition (12) is provided with a first opening (13) and a second opening (14) for connecting the first liquid storage chamber (1001) and the second liquid storage chamber (1003).

4. The building seismic isolation rubber bearing according to claim 3, characterized in that: A first flow limiting plate (15) is provided at the first opening (13), one end of the first flow limiting plate (15) is rotatably connected to the partition plate (12), and a flow limiting mechanism for limiting the flow of the second opening (14) is provided on one side of the partition plate (12); The flow limiting mechanism comprises a gate plate (16), and the gate plate (16) is slidably connected to the partition plate (12). A transmission rod (17) is provided on the outer side of the cylinder body (10), and the transmission rod (17) is elastically connected to the cylinder body (10) via a return spring (18), and one end of the transmission rod (17) passes through the cylinder body (10) and is fixedly connected to the gate plate (16).

5. The building seismic isolation rubber bearing according to claim 4, characterized in that: A speed limiting mechanism for limiting the speed of the transmission rod (17) is provided in the cylinder body (10), and the speed limiting mechanism comprises a sleeve (19), the sleeve (19) is sleeved on the outer side of the transmission rod (17), and a second piston (21) is provided in the sleeve (19), the second piston (21) is fixedly connected to the transmission rod (17), a first flow hole (22) is provided on the second piston (21), and a second flow limiting plate (23) is provided on one side of the first flow hole (22), a second flow limiting plate (23) is provided with a second flow hole (20), and one end of the second flow limiting plate (23) is rotatably connected to the second piston (21).

6. The building seismic isolation rubber bearing according to claim 5, characterized in that: A movable plate (24) is provided on the lower side of the movable seat (4), and the movable plate (24) is slidably connected to the movable seat (4), one end of the movable plate (24) abuts against the adjustment rod (7), and the other end of the movable plate (24) abuts against the transmission rod (17).

7. The building seismic isolation rubber bearing according to claim 1, characterized in that: The extension seat (6) is a hollow structure, and a plurality of third openings (601) are provided on the extension seat (6). A leaf spring fixing seat (25) is provided inside the extension seat (6), and a plurality of leaf springs (26) are provided inside the leaf spring fixing seat (25), and both ends of the leaf spring (26) are rotatably connected to the leaf spring fixing seat (25).

8. The building seismic isolation rubber bearing according to claim 1, characterized in that: A joint (701) is provided at one end of the adjusting rod (7) close to the extension seat (6), and the joint (701) is detachably connected to the adjusting rod (7) via a thread, and a pull ring (702) is provided on the joint (701).

9. The building seismic isolation rubber bearing according to claim 1, characterized in that: Fixed wing plates (27) are provided on both sides of the movable seat (4), and movable wing plates (28) are provided on both front and rear ends of the movable seat (4), and the movable wing plates (28) are detachably connected to the movable seat (4) via bolts.

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