Rubber shock insulation support

Abstract

The invention 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 which are vertically arranged in a spaced mode, rubber gaskets and steel plates are arranged between the two connecting plates in a staggered and stacked mode, and the lead column vertically penetrates through the rubber gaskets and the steel plates which are arranged in a staggered and stacked mode. The rubber gaskets and the steel plates which are arranged in a staggered and stacked mode are wrapped with protective sleeves, the connecting plate comprises a cross-shaped base and four sliding seats, and the four sliding seats are slidably connected to the four corners of the cross-shaped base respectively and locked and fixed through fasteners. According to the rubber shock insulation support, the integrally designed connecting plate is changed into a split structure, so that the rubber shock insulation support has more advantages in the aspects of installation and maintenance, the connecting plate of the split structure is convenient to install in a complex construction environment, compared with an integral connecting plate, the rubber shock insulation support is easier to transport and place at the corresponding position of the shock insulation support, and the construction difficulty is reduced; and after earthquake damage, only the sliding seat needs to be replaced, and the whole connecting plate does not need to be disassembled, so that the economic benefit is improved.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake-isolated building structures, in particular to a rubber earthquake-isolated bearing. Background Art

[0002] Seismic isolation technology can effectively reduce the damage caused by earthquakes to building structures and fully protect human life and property safety; the basic principle of seismic isolation technology is to set seismic isolation bearings with low horizontal stiffness in the isolation layer to extend the natural vibration period of the structure and avoid the dominant period of seismic action, thereby reducing the seismic dynamic response of the superstructure.

[0003] The rubber seismic isolation bearing in the prior art is a seismic isolation bearing with application number CN202122091495.1, comprising an upper connecting plate, a lower connecting plate and a seismic isolation mechanism filled between the upper connecting plate and the lower connecting plate, the seismic isolation mechanism comprising thin steel plate layers and rubber layers, lead cores, protective layer rubber and multi-layer plastic films alternately stacked in the vertical direction; when using the seismic isolation bearing in the prior art, the applicant found that the prior art has the following problems: the seismic isolation bearing connecting plate 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 changeable, so that the connecting plate is subjected to pressure, tension and shear force far exceeding the usual level, which may cause the connecting plate to deform and break; and in areas where earthquakes are frequent, even if the earthquake intensity is usually small, after multiple vibrations, the material of the connecting plate will gradually fatigue, which will make the connecting plate more easily damaged, but the existing connecting plates are mostly one-piece structures. Therefore, it is impossible to replace the connecting plate, and the entire seismic isolation bearing can only be replaced as a whole. Therefore, how to solve the problem that the connecting plate and connecting parts of the one-piece design cannot be replaced is a problem that technicians in this field urgently need to solve. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a rubber seismic isolation bearing that can improve the radial seismic resistance and solve the problem that the connecting plates and connecting parts of the one-piece design cannot be replaced.

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

[0006] A rubber seismic isolation bearing includes two connecting plates spaced apart from each other and a lead column arranged between the two connecting plates. Rubber gaskets and steel plates are alternately stacked between the two connecting plates. The lead column vertically passes through the alternately stacked rubber gaskets and steel plates. The outer sides of the alternately stacked rubber gaskets and steel plates are wrapped with protective covers. The connecting plate includes a cross-shaped base and four slides. The four slides are respectively slidably connected to the four corners of the cross-shaped base and are locked and fixed by fasteners.

[0007] Preferably, a further technical solution of the present invention is:

[0008] Preferably, a T-shaped insert is provided on one side and a rectangular insert is provided on the other side of the adjacent two sides of the slide, a T-shaped slot is provided on the cross-shaped base corresponding to the T-shaped insert, and a rectangular slot is provided corresponding to 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 correspondingly arranged for each sliding seat, which are inserted from the outside of the sliding seat and threadedly connected to the sliding seat and the cross-shaped base.

[0010] Preferably, a telescopic buffer rod is further provided between the two connecting plates. The telescopic buffer rod is located outside the protective sleeve, and both upper and lower ends of the telescopic buffer rod 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 and sealingly connected to each other, an air inlet hole is provided on the outer sleeve, a one-way valve is provided on the air inlet hole, and the one-way valve is connected to an air pump through an air pipe; the air pump is connected to a controller, which receives seismic signals and controls the operation of the air pump.

[0012] Preferably, a plurality of telescopic buffer rods are evenly arranged in an circumferential direction along the outer circumference of the protective sleeve.

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

[0014] Preferably, three lead columns are provided, and the three lead columns are arranged in a triangular structure.

[0015] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0016] The present invention changes the connecting plate with an integrated design into a split structure, so that the rubber seismic isolation bearing has more advantages in installation and maintenance. The connecting plate with a split structure is convenient for installation in a complex construction environment and is easier to transport and place to the corresponding position of the seismic isolation bearing than the integral connecting plate, thereby reducing the construction difficulty. After earthquake damage, only the sliding seat can be replaced without disassembling the entire connecting plate, thereby improving the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 3 1 is a schematic diagram of a top view of the structure of a rubber seismic isolation bearing in an embodiment of the present invention;

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

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

[0022] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0023] like Figures 1 to 4 As shown, this embodiment provides a rubber seismic isolation bearing, including two connecting plates 1 spaced apart from each other and a lead column 4 arranged between the two connecting plates 1, the connecting plate 1 is provided with a connecting hole 103, and is connected to an external base through the connecting hole 103; rubber gaskets 2 and steel plates 3 are alternately stacked between the two connecting plates 1, the lead column 4 vertically passes through the alternately stacked rubber gaskets 2 and steel plates 3, and the outer sides of the alternately stacked rubber gaskets 2 and steel plates 3 are wrapped with a protective cover 5, and the protective cover 5 is made of rubber material; the connecting plate 1 includes a cross-shaped base 101 and four slides 102, and the four slides 102 are respectively slidably connected at the four corners of the cross-shaped base 101 and are locked and fixed by fasteners 8.

[0024] This embodiment provides a connection structure of a cross-shaped base 101 and a slide 102. Specifically, a T-shaped insert 1021 is provided on one side of the adjacent two sides of the slide 102, and a rectangular insert 1022 is provided on the other side. A T-shaped slot 1011 is provided on the cross-shaped base 101 corresponding to the T-shaped insert 1021, and a rectangular slot 1012 is provided 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 correspondingly inserted into the rectangular slot 1012. In this embodiment, the fastener 8 is a locking screw, and two locking screws are correspondingly provided for each slide 102, which are inserted from the outside of the slide 102 to thread the slide 102 and connect the slide 102 and the cross-shaped base 101. The two locking screws are respectively inserted from the two sides of the outside of the slide 102, and are staggered up and down.

[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 upper and lower 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 a prior art, usually including 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 through a connecting bolt. 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. 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 pipe. The air pump is connected to a controller. The controller receives seismic signals and controls the air pump to work. A plurality of telescopic buffer rods 6 are evenly arranged along the outer circumference of the protective sleeve 5. In this embodiment, a total of 12 telescopic buffer rods 6 are provided, three on each side of the front, rear, 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 (displacement sensor, velocity sensor or acceleration sensor, etc.) detects a seismic signal, it sends the seismic signal to the controller. The controller controls the air pump to inflate the telescopic buffer rod 6 through the inflation tube, and uses the compressibility of air to absorb energy. Just like the shock absorber of a car, the air buffer rod can shrink when under pressure and convert part of the vibration energy into the internal energy of the air, thereby effectively reducing the impact of vibration on structures such as buildings, reducing the vibration amplitude of the structure, and improving the shock absorption effect.

[0027] As an embodiment, two lead columns 4 are provided, and the two lead columns 4 are arranged along the diagonal of 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 when subjected to forces in different directions. When subjected to horizontal shear forces, such as the left-right or front-back forces generated by earthquakes, the diagonally distributed lead columns 4 can cooperate with the rubber material to more effectively disperse and resist these shear forces, thereby avoiding damage to the seismic isolation seat due to excessive local forces; from the energy consumption point of view, when vibrations are generated in situations such as earthquakes, the diagonally arranged lead columns 4 will deform, and this deformation process can absorb and consume energy, reduce the energy transmitted to the superstructure, thereby reducing the vibration response of structures such as buildings, and achieving a seismic isolation effect.

[0028] Preferably, three lead columns 4 are provided, and the three lead columns 4 are arranged in a triangular structure; the three lead columns 4 arranged in a triangular structure effectively improve the bearing capacity of the structure; this layout ensures that when facing loads from any direction, there are two lead columns 4 directly bearing the impact load, thereby optimizing the mechanical properties of the structure.

[0029] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made by using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A rubber seismic isolation bearing, comprising two connecting plates (1) spaced apart from each other and a lead column (4) arranged between the two connecting plates (1), rubber gaskets (2) and steel plates (3) being alternately stacked between the two connecting plates (1), the lead column (4) vertically passing through the alternately stacked rubber gaskets (2) and steel plates (3), and the outer sides of the alternately stacked rubber gaskets (2) and steel plates (3) being wrapped with protective sleeves (5), characterized in that: The connecting plate (1) comprises a cross-shaped base (101) and four slides (102). The four slides (102) are respectively slidably connected to the four corners of the cross-shaped base (101) and are locked and fixed by fasteners (8).

2. The rubber seismic isolation bearing according to claim 1, characterized in that: One side of the adjacent two sides of the slide seat (102) is provided with a T-shaped inserting strip (1021) and the other side is provided with a rectangular inserting strip (1022); a T-shaped slot (1011) is provided on the cross-shaped base (101) corresponding to the T-shaped inserting strip (1021); a rectangular slot (1012) is provided corresponding to the rectangular inserting strip (1022); after the T-shaped inserting strip (1021) of the slide seat (102) is inserted into the T-shaped slot (1011) from the end of the T-shaped slot (1011), the rectangular inserting strip (1022) is correspondingly inserted into the rectangular slot (1012).

3. The rubber seismic isolation bearing according to claim 1, characterized in that: The fastener (8) is a locking screw. Two locking screws are correspondingly arranged for each slide seat (102), and are threadedly inserted from the outside of the slide seat (102) to connect the slide seat (102) and the cross-shaped base (101).

4. The rubber seismic isolation bearing according to claim 1, characterized in that: 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). The upper and lower ends of the telescopic buffer rod (6) are connected to the connecting plate (1) via a ball shaft structure (7).

5. The rubber seismic isolation bearing according to claim 4, characterized in that: The telescopic buffer rod (6) comprises an outer sleeve (601) and an inner sleeve (602), the outer sleeve (601) and the inner sleeve (602) are slidably sealed and connected, an air inlet hole is arranged on the outer sleeve (601), a one-way valve is arranged on the air inlet hole, and the one-way valve is connected to an air pump through an air pipe; the air pump is connected to a controller, the controller receives seismic signals and controls the operation of the air pump.

6. The rubber seismic isolation bearing according to claim 4, characterized in that: A plurality of telescopic buffer rods (6) are evenly arranged in an annular direction along the outer circumference of the protective sleeve (5).

7. The rubber seismic isolation bearing according to claim 1, characterized in that: Two lead columns (4) are provided, and the two lead columns (4) are arranged along diagonal lines of the connecting plate (1).

8. The rubber seismic isolation bearing according to claim 1, characterized in that: Three lead columns (4) are provided, and the three lead columns (4) are arranged in a triangular structure.

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