Rubber shock insulation support

Abstract

The utility model relates to the technical field of shock insulation supports, in particular to a rubber shock insulation support which comprises an upper steel plate, a lower steel plate and a rubber shock insulation column body, the upper end of the rubber shock insulation column body is connected with the middle of the lower side of the upper steel plate, and the lower end of the rubber shock insulation column body is connected with the middle of the upper side of the lower steel plate. The upper end of the telescopic pull rod is movably connected with the upper half ring through an upper circular ring, and the lower end of the telescopic pull rod is movably connected with the lower half ring through a lower circular ring. And the telescopic pull rod can be stretched when the upper steel plate and the lower steel plate are staggered, and the displacement limit between the upper steel plate and the lower steel plate is limited by means of the stretching limit of the telescopic pull rod, so that the rubber shock insulation column body is prevented from being damaged due to excessive displacement. The upper semi-ring, the lower semi-ring, the upper circular ring and the lower circular ring can enable the joints of the telescopic pull rods and the upper steel plate and the lower steel plate to be relatively movable, so that the telescopic pull rods can be stretched in any direction along with the upper steel plate and the lower steel plate.

Description

Technical Field

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

[0002] Isolation bearings refer to the supporting devices set up in the structure to meet the requirements of seismic isolation. They are to add an isolation layer between the upper structure and the foundation, install rubber isolation bearings, and play a soft connection with the ground. Through this technology, about 80% of the energy of the earthquake can be offset. For example, laminated rubber bearings (or isolation rubber bearings, sandwich rubber pads, etc.). It is a structural member with small horizontal stiffness and large vertical stiffness. It can withstand large horizontal deformation and can be used as part of the load-bearing system.

[0003] For example, the utility model with application number CN202321586754.0 discloses a self-resetting rubber seismic isolation bearing, which enables the building structure to quickly return to its original position after an earthquake, thereby eliminating the lateral deformation of the building structure. At the same time, the rapid reset also extends the service life of the device.

[0004] In the prior art, most rubber seismic isolation bearings do not have a limiting function when performing horizontal displacement. It is easy for the bearing to be damaged during the horizontal displacement because the horizontal displacement exceeds the limit of the rubber seismic isolation bearing, thereby affecting subsequent use. Utility Model Content

[0005] The utility model aims to provide a rubber seismic isolation bearing to solve the problem in the prior art that the rubber seismic isolation bearing is easily damaged due to excessive horizontal displacement.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A rubber seismic isolation bearing comprises an upper steel plate, a lower steel plate and a rubber seismic isolation column, wherein the upper end of the rubber seismic isolation column is connected to the middle part of the lower side of the upper steel plate, and the lower end is connected to the middle part of the upper side of the lower steel plate. The rubber seismic isolation column also comprises a telescopic pull rod, wherein an upper half ring is arranged on the lower side of the upper steel plate, and a lower half ring is arranged on the upper side of the lower steel plate. The upper end of the telescopic pull rod is movably connected to the upper half ring through an upper circular ring, and the lower end is movably connected to the lower half ring through a lower circular ring.

[0008] A further technical solution is that the telescopic pull rod includes an upper rod body and a lower rod body, the lower ring is connected to the lower end of the lower rod body, the upper end of the lower rod body is provided with a telescopic hole, the upper ring is provided at the upper end of the upper rod body, and the lower end of the upper rod body is inserted into the telescopic hole; a limit plate is provided at one end of the upper rod body placed in the telescopic hole, the outer diameter of the limit plate is larger than the diameter of the upper rod body and matches the aperture of the telescopic hole; a limit block matching the limit plate is provided at the opening of the telescopic hole.

[0009] A further technical solution is that the lower side of the limiting plate is connected to the bottom of the telescopic hole through a spring.

[0010] A further technical solution is that a rubber block is arranged on the inner wall of the limit block, and the rubber block is sealed and fitted with the outer wall of the upper rod body; a plurality of rubber blocks are arranged on the inner wall of the limit block.

[0011] A further technical solution is that the lower end of the lower rod body is provided with an air hole connected to the telescopic hole.

[0012] A further technical solution is that the outer wall of the rubber seismic isolation column is wrapped with fireproof cloth.

[0013] A further technical solution is that the fireproof cloth is attached to the outer wall of the rubber seismic isolation column by Velcro.

[0014] A further technical solution is that a plurality of telescopic pull rods are arranged between the upper steel plate and the lower steel plate.

[0015] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. During an earthquake, since the rubber seismic isolation column itself has horizontal displacement performance, the lower steel plate will move horizontally with the lower column, but the upper steel plate and the upper column will only shake slightly because the rubber seismic isolation column offsets most of the horizontal earthquake force; 2. By arranging a telescopic pull rod, it can be stretched as the upper and lower steel plates are misaligned, and the displacement limit between the upper and lower steel plates is limited by the stretching limit of the telescopic pull rod, thereby avoiding damage to the rubber seismic isolation column due to excessive displacement; 3. By arranging an upper half ring, a lower half ring, an upper circular ring and a lower circular ring, the connection between the telescopic pull rod and the upper and lower steel plates can be made more active, so that the telescopic pull rod can be stretched in any direction with the upper and lower steel plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a rubber seismic isolation bearing of the utility model.

[0017] Figure 2 The utility model is a schematic cross-sectional view of a telescopic pull rod of a rubber seismic isolation bearing.

[0018] Icons: 1-upper steel plate, 2-lower steel plate, 3-rubber seismic isolation column, 4-telescopic rod, 5-upper half ring, 6-lower half ring, 7-upper circular ring, 8-lower circular ring, 9-upper rod body, 10-lower rod body, 11-telescopic hole, 12-limiting plate, 13-limiting block, 14-spring, 15-rubber block, 16-air hole, 17-fireproof cloth, 18-Velcro, 19-upper core board, 20-lower core board, 21-rubber layer, 22-steel plate layer, 23-lead core. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] Figure 1 , Figure 2 Shown is an embodiment of the utility model.

[0021] Embodiment 1:

[0022] A rubber seismic isolation bearing includes an upper steel plate 1, a lower steel plate 2 and a rubber seismic isolation column 3, wherein the upper end of the rubber seismic isolation column 3 is connected to the middle part of the lower side of the upper steel plate 1, and the lower end is connected to the middle part of the upper side of the lower steel plate 2, and also includes a telescopic pull rod 4, an upper half ring 5 is provided on the lower side of the upper steel plate 1, and a lower half ring 6 is provided on the upper side of the lower steel plate 2, the upper end of the telescopic pull rod 4 is movably connected to the upper half ring 5 through an upper circular ring 7, and the lower end is movably connected to the lower half ring 6 through a lower circular ring 8. During an earthquake, since the rubber seismic isolation column 3 itself has horizontal displacement performance, the lower steel plate 2 will move horizontally with the lower column, but the upper steel plate 1 and the upper column will only shake slightly because the rubber seismic isolation column 3 offsets most of the horizontal earthquake force. By setting up the telescopic rod 4, it can be stretched when the upper steel plate 1 and the lower steel plate 2 are misaligned, and the displacement limit between the upper steel plate 1 and the lower steel plate 2 can be limited by means of the stretching limit of the telescopic rod 4, thereby avoiding damage to the rubber seismic isolation column 3 due to excessive displacement. By setting up the upper half ring 5, the lower half ring 6, the upper circular ring 7 and the lower circular ring 8, the connection between the telescopic rod 4 and the upper steel plate 1 and the lower steel plate 2 can be made more active, so that the telescopic rod 4 can be stretched in any direction along with the upper steel plate 1 and the lower steel plate 2. The rubber seismic isolation column 3 can be arranged in a conventional manner. For example, it includes an upper core plate 19, a lower core plate 20, a rubber layer 21, a steel plate layer 22 and a lead core 23, wherein the upper core plate 19 is fitted on the lower side of the upper steel plate 1, the lower core plate 20 is fitted on the upper side of the lower steel plate 2, the upper end of the lead core 23 is fitted on the upper core plate 19, and the lower end is fitted on the lower core plate 20, the steel plate layer 22 and the rubber layer 21 are alternately arranged to fill the gap between the upper core plate 19 and the lower core plate 20, and the through holes for accommodating the lead core 23 are aligned in the middle. The outer walls of the rubber layer 21 and the steel plate layer 22 are wrapped by rubber sheets.

[0023] The telescopic rod 4 includes an upper rod body 9 and a lower rod body 10, the lower ring 8 is connected to the lower end of the lower rod body 10, the upper end of the lower rod body 10 is provided with a telescopic hole 11, the upper ring 7 is provided at the upper end of the upper rod body 9, and the lower end of the upper rod body 9 is inserted into the telescopic hole 11; a limit plate 12 is provided at one end of the upper rod body 9 placed in the telescopic hole 11, the outer diameter of the limit plate 12 is larger than the diameter of the upper rod body 9, and matches the aperture of the telescopic hole 11; a limit block 13 matching the limit plate 12 is provided at the opening of the telescopic hole 11. By providing the telescopic hole 11, the overall length of the telescopic rod 4 can be adjusted by sliding the upper rod body 9 in the telescopic hole 11, and the overall extension limit of the telescopic rod 4 can be controlled by providing the limit plate 12 and the limit block 13. A plurality of limit blocks 13 can be provided at the opening of the telescopic hole 11. On the one hand, when the limit stretching is increased, the limit plate 12 can be prevented from passing through the telescopic hole 11. At the same time, the air in the telescopic hole 11 can be discharged by using the gaps between the plurality of limit blocks 13, so that the limit plate 12 can slide smoothly in the telescopic hole 11.

[0024] Embodiment 2:

[0025] like Figure 2 As shown, based on Example 1, the lower side of the limit plate 12 is connected to the bottom of the telescopic hole 11 through a spring 14. By setting the spring 14, when the limit plate 12 moves away from and close to the bottom of the telescopic hole 11, it can provide tension and elastic force to assist the rubber seismic isolation column 3 to offset the horizontal displacement force.

[0026] The inner wall of the limit block 13 is provided with a rubber block 15, and the rubber block 15 is sealed and fitted with the outer wall of the upper rod body 9; a plurality of rubber blocks 15 are provided on the inner wall of the limit block 13. By providing a plurality of rubber blocks 15, the smoothness of sliding between the upper rod body 9 and the limit block 13 can be improved.

[0027] The lower end of the lower rod body 10 is provided with an air hole 16 connected to the telescopic hole 11. By providing the air hole 16, it is possible to facilitate the discharge and entry of air between the limit plate 12 and the bottom of the telescopic hole 11, and the efficiency of air intake and exhaust is controlled by means of the aperture of the air hole 16, thereby achieving a certain damping effect.

[0028] Embodiment 3:

[0029] like Figure 1 As shown, on the basis of Example 1, the outer wall of the rubber seismic isolation column 3 is wrapped with a fireproof cloth 17. By providing the fireproof cloth 17, the rubber seismic isolation column 3 can be prevented from being damaged in the event of a fire.

[0030] The fireproof cloth 17 is bonded to the outer wall of the rubber seismic isolation column 3 by Velcro 18. The rubber seismic isolation column 3 fixes the fireproof cloth 17 to the outer wall of the rubber seismic isolation column 3 by Velcro 18, which is convenient for replacement and maintenance, and can also provide a loose state when the fireproof cloth 17 wraps the rubber seismic isolation column 3, so as not to affect the horizontal displacement deformation of the rubber seismic isolation column 3.

[0031] A plurality of telescopic rods 4 are provided between the upper steel plate 1 and the lower steel plate 2. Through the plurality of telescopic rods 4, the limit displacement limit function can be achieved from multiple positions, the limit strength is improved, and the single telescopic rod 4 is prevented from being broken.

[0032] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A rubber seismic isolation bearing, comprising an upper steel plate (1), a lower steel plate (2) and a rubber seismic isolation column (3), wherein the upper end of the rubber seismic isolation column (3) is connected to the middle part of the lower side of the upper steel plate (1), and the lower end is connected to the middle part of the upper side of the lower steel plate (2), characterized in that: It also includes a telescopic pull rod (4), an upper half ring (5) is provided on the lower side of the upper steel plate (1), and a lower half ring (6) is provided on the upper side of the lower steel plate (2); the upper end of the telescopic pull rod (4) is movably connected to the upper half ring (5) via an upper circular ring (7), and the lower end is movably connected to the lower half ring (6) via a lower circular ring (8).

2. The rubber seismic isolation bearing according to claim 1, characterized in that: The telescopic pull rod (4) comprises an upper rod body (9) and a lower rod body (10), the lower ring (8) is connected to the lower end of the lower rod body (10), the upper end of the lower rod body (10) is provided with a telescopic hole (11), the upper ring (7) is provided at the upper end of the upper rod body (9), and the lower end of the upper rod body (9) is inserted into the telescopic hole (11); A limit plate (12) is provided at one end of the upper rod body (9) placed in the telescopic hole (11); the outer diameter of the limit plate (12) is larger than the diameter of the upper rod body (9) and matches the aperture of the telescopic hole (11); A limiting block (13) matching the limiting plate (12) is arranged at the opening of the telescopic hole (11).

3. The rubber seismic isolation bearing according to claim 2, characterized in that: The lower side of the limiting plate (12) is connected to the bottom of the telescopic hole (11) via a spring (14).

4. The rubber seismic isolation bearing according to claim 2, characterized in that: The inner wall of the limit block (13) is provided with a rubber block (15), and the rubber block (15) is sealed and fitted with the outer wall of the upper rod body (9); A plurality of rubber blocks (15) are arranged on the inner wall of the limiting block (13).

5. The rubber seismic isolation bearing according to claim 2, characterized in that: The lower end of the lower rod body (10) is provided with an air hole (16) which is in communication with the telescopic hole (11).

6. The rubber seismic isolation bearing according to claim 1, characterized in that: The outer wall of the rubber seismic isolation column (3) is wrapped with a fireproof cloth (17).

7. The rubber seismic isolation bearing according to claim 6, characterized in that: The fireproof cloth (17) is bonded to the outer wall of the rubber seismic isolation column (3) by means of Velcro (18).

8. The rubber seismic isolation bearing according to claim 1, characterized in that: A plurality of telescopic pull rods (4) are arranged between the upper steel plate (1) and the lower steel plate (2).

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