Rubber seismic isolation bearing

Abstract

The application relates to the technical field of shock insulation building structures, in particular to a rubber shock insulation support which comprises two connecting plates and a lead column arranged at intervals, rubber pads and steel plates are arranged in a staggered and laminated mode between the two connecting plates, the lead column vertically penetrates the staggered and laminated rubber pads and steel plates, the outer side of the staggered and laminated rubber pads and steel plates is wrapped with a protective sleeve, the connecting plate comprises a cross-shaped base and four sliding seats, the four sliding seats are respectively slidably connected at the four corners of the cross-shaped base and are locked and fixed through fasteners; the connecting plate is designed in a split structure instead of an integrated structure, the rubber shock insulation support has more advantages in installation and maintenance, the connecting plate in the split structure is convenient to install in a complex construction environment, is easier to transport and place to the corresponding position of the shock insulation support compared with the integrated connecting plate, and the construction difficulty is reduced; after earthquake damage, only the sliding seat needs to be replaced, the whole connecting plate does not need to be disassembled, and the economic benefit is improved.

Description

Technical Field

[0001] This invention relates to the field of seismic isolation building structure technology, specifically a rubber seismic isolation bearing. Background Technology

[0002] Seismic isolation technology can effectively reduce the damage to building structures caused by earthquakes and fully protect people's lives and property. The basic principle of seismic isolation technology is to set up seismic isolation bearings with low horizontal stiffness in the seismic isolation layer, extend the natural period of the structure, avoid the dominant period of the seismic action, and thus reduce the seismic dynamic response of the superstructure.

[0003] The existing rubber seismic isolation bearing, as described in application number CN202122091495.1, includes an upper connecting plate, a lower connecting plate, and a seismic isolation mechanism filled between the upper and lower connecting plates. The seismic isolation mechanism includes alternating layers of thin steel plates and rubber, a lead core, a protective rubber layer, and multiple layers of plastic film stacked vertically. When using the existing seismic isolation bearing, the applicant discovered the following problems: the connecting plate of the seismic isolation bearing must bear the weight of the building and the inertial force brought by the earthquake. When the earthquake intensity is very high, the magnitude and direction of the force are complex and variable, causing the connecting plate to bear pressure, tension, and shear forces far exceeding normal levels, which may lead to deformation and breakage of the connecting plate. Furthermore, in areas with frequent earthquakes, even if the earthquake intensity is usually low, after repeated vibrations, the material of the connecting plate will gradually fatigue, making the connecting plate more susceptible to damage. However, existing connecting plates are mostly one-piece structures, therefore, it is impossible to replace the connecting plate; the entire seismic isolation bearing must be replaced. Therefore, how to solve the problem of the inability to replace the one-piece designed connecting plate and connecting parts is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a rubber seismic isolation bearing that can improve radial seismic resistance and solve the problem of the inability to replace the connecting plate and connectors in an integrated design.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A rubber seismic isolation bearing includes two connecting plates spaced apart vertically and a lead column disposed between the two connecting plates. Rubber pads and steel plates are staggered and stacked between the two connecting plates. The lead column passes vertically through the staggered rubber pads and steel plates. The staggered rubber pads and steel plates are covered with protective sleeves. The connecting plates include a cross-shaped base and four sliding blocks. The four sliding blocks are slidably connected to the four corners of the cross-shaped base and locked and fixed by fasteners.

[0007] As a preferred embodiment, a further technical solution of the present invention is:

[0008] Preferably, a T-shaped insert is provided on one side of the adjacent two sides of the slide and a rectangular insert is provided on the other side. A T-shaped slot is provided on the cross-shaped base corresponding to the T-shaped insert and a rectangular slot is provided on the rectangular insert. After the T-shaped insert of the slide is inserted into the T-shaped slot from the end of the T-shaped slot, the rectangular insert is inserted into the rectangular slot accordingly.

[0009] Preferably, the fastener is a locking screw, and two locking screws are provided for each slide, which are threaded through from the outside of the slide to connect the slide and the cross-shaped base.

[0010] Preferably, a telescopic buffer bar is also provided between the two connecting plates. The telescopic buffer bar is located on the outside of the protective sleeve, and both the upper and lower ends of the telescopic buffer bar are connected to the connecting plates through a ball shaft structure.

[0011] Preferably, the telescopic buffer rod includes an outer sleeve and an inner sleeve, which are slidably sealed together. An air inlet is provided on the outer sleeve, and a one-way valve is provided on the air inlet. The one-way valve is connected to an air pump through an air inlet pipe. The air pump is connected to a controller, which receives earthquake signals and controls the operation of the air pump.

[0012] Preferably, multiple telescopic buffer bars are evenly arranged around the outer periphery of the protective sleeve.

[0013] Preferably, two lead columns are provided, and the two lead columns are arranged along the diagonal of the connecting plate.

[0014] Preferably, there are three lead pillars arranged in a triangular structure.

[0015] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art:

[0016] This invention changes the integrated connecting plate to a split structure, giving the rubber seismic isolation bearing greater advantages in installation and maintenance. The split structure of the connecting plate facilitates installation in complex construction environments and is easier to transport and place in the corresponding position of the seismic isolation bearing compared to the integrated connecting plate, reducing construction difficulty. After earthquake damage, only the sliding seat can be replaced without disassembling the entire connecting plate, improving economic efficiency. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the rubber seismic isolation bearing in an embodiment of the present invention;

[0018] Figure 2 This is a side view of the rubber seismic isolation bearing in an embodiment of the present invention;

[0019] Figure 3 This is a top view of the rubber seismic isolation bearing in an embodiment of the present invention;

[0020] Figure 4This is a schematic diagram of the connection structure between the cross-shaped base and the slide in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Connecting plate; 101. Cross-shaped base; 1011. T-shaped slot; 1012. Rectangular slot; 102. Slide; 1021. T-shaped insert; 1022. Rectangular insert; 103. Connecting hole; 2. Rubber gasket; 3. Steel plate; 4. Lead column; 5. Protective sleeve; 6. Telescopic buffer bar; 601. Outer sleeve; 602. Inner sleeve; 7. Ball shaft structure; 8. Fastener. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown in the figure, this embodiment provides a rubber seismic isolation bearing, including two connecting plates 1 spaced apart vertically and a lead column 4 disposed between the two connecting plates 1. The connecting plates 1 are provided with connecting holes 103, which are connected to an external base. Rubber pads 2 and steel plates 3 are staggered and stacked between the two connecting plates 1. The lead column 4 passes vertically through the staggered rubber pads 2 and steel plates 3. The staggered rubber pads 2 and steel plates 3 are wrapped with protective sleeves 5, which are made of rubber. The connecting plates 1 include a cross-shaped base 101 and four slides 102. The four slides 102 are slidably connected to the four corners of the cross-shaped base 101 and locked and fixed by fasteners 8.

[0024] This embodiment provides a connection structure between a cross-shaped base 101 and a slide 102. Specifically, one side of the slide 102 has a T-shaped insert 1021, and the other side has a rectangular insert 1022. The cross-shaped base 101 has a T-shaped slot 1011 corresponding to the T-shaped insert 1021, and a rectangular slot 1012 corresponding to the rectangular insert 1022. After the T-shaped insert 1021 of the slide 102 is inserted into the T-shaped slot 1011, the rectangular insert 1022 is inserted into the rectangular slot 1012. In this embodiment, the fastener 8 is a locking screw. Each slide 102 is provided with two locking screws, which are threaded through the outside of the slide 102 to connect the slide 102 and the cross-shaped base 101. The two locking screws are respectively inserted from the outer sides of the slide 102 and are staggered vertically.

[0025] A telescopic buffer rod 6 is also provided between the two connecting plates 1. The telescopic buffer rod 6 is located outside the protective sleeve 5. Both ends of the telescopic buffer rod 6 are connected to the connecting plate 1 through a ball shaft structure 7. The ball shaft structure 7 is existing technology and usually includes a ball head and a ball socket. In this embodiment, the end of the telescopic buffer rod 6 is designed as a ball head structure. A ball socket connected to the ball head is provided on the ball shaft seat. The ball head connecting seat is connected to the connecting plate 1 by connecting bolts. The telescopic buffer rod 6 includes an outer sleeve 601 and an inner sleeve 602. The outer sleeve 601 and the inner sleeve 602 are slidably sealed together. An air inlet is provided on the outer sleeve 601. A one-way valve is provided on the air inlet. The one-way valve is connected to an air pump through an air inlet pipe. The air pump is connected to a controller. The controller receives earthquake signals and controls the operation of the air pump. Multiple telescopic buffer rods 6 are evenly arranged around the outer periphery of the protective sleeve 5. In this embodiment, a total of 12 telescopic buffer rods 6 are provided, three on each of the front, back, left, and right sides. Those skilled in the art can select a reasonable number of telescopic buffer rods 6 according to actual needs.

[0026] When a seismic sensor (such as a displacement sensor, velocity sensor, or acceleration sensor) detects a seismic signal, it sends the signal to a controller. The controller then controls an air pump to inflate the telescopic buffer rod 6 through an air inflator. By utilizing the compressibility of air, the energy is absorbed, much like a car's shock absorber. The air buffer rod can contract under pressure, converting some of the vibration energy into the internal energy of the air, thereby effectively reducing the impact of vibration on buildings and other structures, lowering the vibration amplitude of the structure, and improving the vibration reduction effect.

[0027] As one embodiment, two lead columns 4 are provided, arranged diagonally along the connecting plate. From a mechanical point of view, the diagonally arranged lead columns 4 can enhance the stability of the rubber seismic isolation bearing under different directions of force. When subjected to horizontal shear force, such as the left-right or front-back forces generated by an earthquake, the diagonally distributed lead columns 4 can work together with the rubber material to more effectively disperse and resist these shear forces, preventing the seismic isolation bearing from being damaged due to excessive local stress. From the perspective of energy consumption, when vibrations occur due to earthquakes or other events, the diagonally arranged lead columns 4 will deform. This deformation process can absorb and consume energy, reducing the energy transmitted to the superstructure, thereby reducing the vibration response of the building and other structures, and achieving the effect of seismic isolation.

[0028] Preferably, there are three lead columns 4 arranged in a triangular structure. The triangular layout of the three lead columns 4 effectively improves the load-bearing capacity of the structure. This layout ensures that when facing loads from any direction, two lead columns 4 directly bear the impact load, thus optimizing the mechanical properties of the structure.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A rubber seismic isolation bearing, comprising two connecting plates (1) spaced apart vertically and a lead column (4), wherein rubber pads (2) and steel plates (3) are staggered and stacked between the two connecting plates (1), the lead column (4) passes vertically through the staggered rubber pads (2) and steel plates (3), and the staggered rubber pads (2) and steel plates (3) are covered with protective sleeves (5), characterized in that: The connecting plate (1) includes a cross-shaped base (101) and four slides (102). The four slides (102) are slidably connected to the four corners of the cross-shaped base (101) and locked and fixed by fasteners (8). A telescopic buffer rod (6) is also provided between the two connecting plates (1). The telescopic buffer rod (6) is located outside the protective sleeve (5). Both the upper and lower ends of the telescopic buffer rod (6) are connected to the connecting plate (1) through a ball shaft structure (7). The telescopic buffer rod (6) includes an outer sleeve (601) and an inner sleeve (602). The outer sleeve (601) and the inner sleeve (602) are slidably sealed together. An air inlet is provided on the outer sleeve (601). A one-way valve is provided on the air inlet. The one-way valve is connected to an air pump through an air inlet pipe. The air pump is connected to a controller. The controller receives earthquake signals and controls the air pump to work. The slide (102) has a T-shaped insert (1021) on one side and a rectangular insert (1022) on the other side. The cross-shaped base (101) has a T-shaped slot (1011) corresponding to the T-shaped insert (1021) and a rectangular slot (1012) corresponding to the rectangular insert (1022). After the T-shaped insert (1021) of the slide (102) is inserted into the T-shaped slot (1011) from the end of the T-shaped slot (1011), the rectangular insert (1022) is inserted into the rectangular slot (1012). The fastener (8) is a locking screw. Each slide (102) is provided with two locking screws, which are threaded through the outside of the slide (102) to connect the slide (102) and the cross-shaped base (101).

2. The rubber seismic isolation bearing according to claim 1, characterized in that: There are 12 telescopic buffer bars (6) in total, with three on each side: front, back, left, and right.

3. A rubber seismic isolation bearing according to claim 1, characterized in that: There are two lead pillars (4), which are set diagonally opposite each other.

4. A rubber seismic isolation bearing according to claim 1, characterized in that: There are three lead pillars (4), and the three lead pillars (4) are arranged in a triangular structure.

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