A fireproof and corrosion-resistant seismic isolation bearing

Abstract

The present invention provides a fireproof and corrosion-resistant seismic isolation bearing, comprising an upper structure pedestal, a lower foundation pedestal, a lead core laminated rubber seismic isolation bearing, an outer rubber layer, an outer ring protective rubber layer, a fire retardant coating layer, a flexible filling material and a connecting steel plate, wherein the outer rubber layer is wrapped around the periphery of the lead core laminated rubber seismic isolation bearing and is vulcanized and connected to the connecting steel plate, the outer ring protective rubber is arranged in a ring shape around the outer rubber layer and is vulcanized and connected to the outer rubber layer, a flexible filling material is filled between the outer rubber layer and the outer ring protective rubber, and a fire retardant coating layer is coated on the surface of the connecting steel plate. The beneficial effects of the present invention are as follows: the fireproof and corrosion-resistant seismic isolation bearing of the present invention does not affect the horizontal seismic isolation performance of the lead core laminated rubber seismic isolation bearing body, can effectively protect the vertical bearing capacity of the traditional lead core laminated rubber seismic isolation bearing in a fire, and does not affect its horizontal deformation capacity.

Description

[0001] The invention belongs to the technical field of fireproof and corrosion-resistant seismic isolation bearings that have no influence on horizontal seismic isolation effects, and in particular relates to a fireproof and corrosion-resistant seismic isolation bearing. Background Art

[0002] Vibration is a common phenomenon in nature. In many engineering environments, vibration is considered an unfavorable factor. In order to protect instruments, equipment and other objects from damage caused by vibration, more and more vibration isolation devices are appearing on the market. At present, the horizontal seismic isolation of most devices is achieved through lead-core laminated rubber bearings. However, the rubber used in traditional lead-core laminated rubber bearings is flammable. Once burned, the rubber bearings will directly lose their vertical bearing capacity and horizontal seismic isolation capabilities. Nowadays, many houses that use seismic isolation designs will design the seismic isolation layer as an underground garage. Under the action of an earthquake, the possibility of a car fire threatening the bearing cannot be ruled out. Therefore, fire protection design for traditional seismic isolation bearings is very necessary.

[0003] At present, there are many fire-proof and corrosion-resistant seismic isolation bearings on the market: the bearings that simply use fire-retardant paint as the fire-proof layer have a certain fire-proof ability, but fire-retardant paint is a brittle coating. While providing a certain fire-proof ability, it must have a certain thickness. When the bearing produces lateral displacement, the coating will inevitably crack and disintegrate, and naturally it will not have fire-proof ability; considering the deformation ability of the bearing under fire, there are also bearings that use flexible fire-proof covers as fire-proof layers, but the sealing of the connection between the ordinary fire-proof covers and the upper and lower plates of the bearing is a problem. Without good sealing performance, the fire-proof ability of the fire-proof covers cannot be well exerted.

[0004] How to solve the above technical problems is the subject faced by the present invention. Summary of the invention

[0005] The purpose of the present invention is to provide a fireproof and corrosion-resistant seismic isolation bearing, which does not affect the horizontal seismic isolation performance of the lead core laminated rubber seismic isolation bearing body, can effectively protect the vertical bearing capacity of the traditional lead core laminated rubber seismic isolation bearing in a fire, and will not affect its horizontal deformation capacity. The double-layer fireproof rubber does not affect the horizontal deformation of the lead core laminated rubber seismic isolation bearing while providing a certain fire protection function. The cavity inside the fireproof rubber is completely filled with flexible fireproof materials such as asbestos, thereby avoiding the influence on the horizontal deformation capacity of the lead core laminated rubber seismic isolation bearing under fire protection requirements, and the seismic isolation effect is good.

[0006] The present invention is achieved through the following measures: a fire-proof and corrosion-resistant seismic isolation bearing, including an upper structure pedestal, a lower foundation pedestal, a lead core laminated rubber seismic isolation bearing, an outer rubber layer, an outer ring protective rubber layer, a fire retardant coating layer, a flexible filling material and a connecting steel plate, wherein the outer rubber layer is wrapped around the periphery of the lead core laminated rubber seismic isolation bearing and is vulcanized and connected to the connecting steel plate, the outer ring protective rubber is arranged in a ring shape around the outer rubber layer and is vulcanized and connected to the outer rubber layer, a flexible filling material is filled between the outer rubber layer and the outer ring protective rubber, and the surface of the connecting steel plate is coated with a fire retardant coating layer.

[0007] Furthermore, the fireproof and corrosion-resistant seismic isolation bearing also includes an elastic shock-absorbing component built into the flexible filling material and connected between the upper structure pedestal and the lower foundation pedestal.

[0008] Furthermore, the elastic shock-absorbing assembly includes a fixed base plate, a limiting guide hole is provided at the center of gravity of the fixed base plate, and a fixed support frame, an elastic element and a pad element are provided in sequence along the axial direction of the limiting guide hole on one side of the fixed base plate, and a guide shaft is sleeved in the limiting guide hole and passes through the fixed support frame, the elastic element and the pad element in sequence, and a connecting sleeve is also slidably sleeved on the guide shaft, one end of the connecting sleeve is connected to the elastic element, and the other end is connected to the connecting steel plate on the lower supporting platform.

[0009] Furthermore, the elastic element is composed of a transverse support plate sleeved on the guide shaft, two baffles respectively connected to the two ends of the transverse support plate, an arc-shaped support member with one end respectively connected to the two baffles, and two compression springs connecting the transverse support plate to the fixed support frame; the other ends of the two arc-shaped support members are connected to a guide sleeve, and the guide sleeve is slidably matched with the guide shaft.

[0010] Furthermore, the pad element is composed of a middle connecting plate and two pads connected to two free ends of the middle connecting plate, and the center of the middle connecting plate is connected to the guide shaft.

[0011] Furthermore, a fireproof layer composed of a double layer of fireproof rubber is provided on the outer side of the lead core laminated rubber seismic isolation bearing. The height and inner diameter of the fireproof layer are equal to those of the lead core laminated rubber seismic isolation bearing, and the outer diameter is slightly larger than the lead core laminated rubber seismic isolation bearing. It is a hollow annular cylinder, and the hollow part inside the double layer of fireproof rubber is filled with flexible fireproof material. The exposed steel structure parts on the upper and lower sides of the lead core laminated rubber seismic isolation bearing are coated with fireproof paint, and the connection between the double layer of fireproof rubber and the lead core laminated rubber seismic isolation bearing is vulcanized.

[0012] Furthermore, the lead core laminated rubber seismic isolation bearing is connected to the upper structure pedestal and the lower foundation pedestal by bolts.

[0013] Furthermore, the flexible filling material is asbestos.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The double-layer fireproof rubber of the present invention is flexible and can follow deformation, vulcanization connection, and sealing; the double-layer fireproof rubber and the filling flexible fireproof material have good anti-corrosion, flame retardant and heat insulation effects;

[0016] (2) The structure is simple. The horizontal isolation performance of the lead core laminated rubber isolation bearing is not affected. The double-layer fireproof rubber does not affect the horizontal deformation of the bearing while providing a certain fireproof ability. If there are further requirements for fireproof ability, the cavity inside the fireproof rubber can be completely filled with flexible fireproof materials such as asbestos. Under the condition of meeting the fireproof requirements, the impact on the horizontal deformation capacity of the bearing can be ignored and does not affect the isolation effect. The connection between the double-layer fireproof rubber and the lead core laminated rubber isolation bearing can be completely sealed by using the existing laminated rubber bearing vulcanization processing procedure. Under the premise of ensuring the sealing performance, there is no need to develop new processing methods, which has certain economic benefits. The exposed steel structure parts on the upper and lower sides of the lead core laminated rubber isolation bearing are all coated with fireproof paint to isolate the strength loss of the steel due to the increase in temperature.

[0017] (3) The lead core laminated rubber seismic isolation bearing is directly connected to the upper structure pedestal and the lower foundation pedestal by bolts; the double-layer fireproof rubber is a hollow annular cylinder that wraps around the outer periphery of the rubber bearing body; the flexible fireproof material filled in the double-layer fireproof rubber can be asbestos, the double-layer fireproof rubber is the first fireproof layer, and the flexible fireproof material such as asbestos is the second fireproof layer; the steel surface is also coated with fireproof paint on the upper and lower surfaces of the upper structure pedestal and the lower foundation pedestal. The connection between the double-layer fireproof rubber and the lead core laminated rubber seismic isolation bearing adopts the existing vulcanization process of the lead core laminated rubber bearing.

[0018] (4) The present invention can not only effectively protect the vertical bearing capacity and horizontal seismic isolation capacity of traditional lead-core laminated rubber seismic isolation bearings in fire, but also will not affect their horizontal deformation capacity. In terms of economic applicability, since the present invention adopts the vulcanization process of traditional lead-core laminated rubber seismic isolation bearings as a means of connecting the fireproof rubber insulation layer and the lead-core laminated rubber seismic isolation bearing body, there is no need to develop new technologies, thus providing good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of Example 2 of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of Example 3 of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of Example 4 of the present invention.

[0024] Figure 5 Schematic diagram of the structure of the elastic shock absorbing assembly in Example 4 of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the fixed support frame in Example 4 of the present invention.

[0026] Figure 7 Schematic diagram of the structure of the elastic element in Example 4 of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the pad element in Example 4 of the present invention.

[0028] Among them, the accompanying drawings are marked as: 1. upper structure pedestal; 2. lower foundation pedestal; 3. lead core laminated rubber seismic isolation bearing; 4. outer rubber layer; 5. outer ring protective rubber layer; 6. fire retardant coating layer; 7. flexible filling material; 8. connecting steel plate; 9. elastic shock-absorbing component; 90. fixed bottom plate; 900. limiting guide hole; 91. fixed support frame; 92. elastic element; 920. horizontal support plate; 921. baffle; 922. arc support member; 923. compression spring; 93. pad element; 930. middle connecting plate; 931. pad; 94. guide shaft; 95. connecting sleeve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0030] Example 1

[0031] See also Figure 1The present invention provides a technical solution as follows: a fireproof and corrosion-resistant seismic isolation bearing includes: an upper structure pedestal 1, a lower foundation pedestal 2, a fire retardant coating 3, bolts 4, a double-layer fireproof rubber 6, and a lead core laminated rubber bearing 7, wherein the double-layer fireproof rubber 6 on the outside of the lead core laminated rubber bearing 7 is a hollow annular column, which is wrapped around the outer periphery of the rubber bearing 7, and the outer rubber coating of the lead core laminated rubber bearing 7 and the rubber layer on the outside of the outer rubber coating are both fireproof rubber; on the upper and lower surfaces of the lead core laminated rubber bearing 7 body, the steel surface is also coated with a fire retardant coating 3. On the premise of providing a certain fire protection ability, the hollow double-layer fireproof rubber 6 will not affect the horizontal deformation ability of the lead core laminated rubber bearing.

[0032] Example 2

[0033] See also Figure 2 On the basis of Example 1, this embodiment also includes the following contents: a flexible material 5 is filled in the hollow double-layer fireproof rubber 6, and the flexible material 5 is asbestos. Since the double-layer fireproof rubber 6 only serves as the first fireproof layer, it does not need a very large thickness and has no effect on the horizontal deformation capacity of the lead core laminated rubber support 7; the hollow inside the double-layer fireproof rubber 6 is filled with a flexible fireproof material 5, such as asbestos, as the second fireproof layer to provide sufficient fireproofing ability.

[0034] Example 3

[0035] See also Figure 3 On the basis of Example 2, this embodiment also includes the following contents: the top and bottom of the double-layer fireproof rubber 6 are arranged to be connected, forming a hollow annular cylinder with a closed outer surface, and the interior is filled with a flexible fireproof material 5, such as asbestos. When the double-layer fireproof rubber 6 is connected to the lead core laminated rubber support 7 body using a vulcanization process, the design of connecting the top and the bottom can make the connection between the double-layer fireproof rubber 6 and the lead core laminated rubber support 7 tighter and the sealing performance is better.

[0036] Example 4

[0037] See also Figures 3 to 8 The present invention provides a technical solution, which is a fire-proof and corrosion-resistant seismic isolation bearing, including an upper structure pedestal 1, a lower foundation pedestal 2, a lead core laminated rubber seismic isolation bearing 3, an outer rubber layer 4, an outer ring protective rubber layer 5, a fire retardant coating layer 6, a flexible filling material 7 and a connecting steel plate 8, wherein the outer rubber layer 4 is wrapped around the periphery of the lead core laminated rubber seismic isolation bearing 3 and is vulcanized and connected to the connecting steel plate 8, the outer ring protective rubber 5 is arranged on the periphery of the outer rubber layer 4 in a ring shape, and is vulcanized and connected to the outer rubber layer 4, a flexible filling material 7 is filled between the outer rubber layer 4 and the outer ring protective rubber 5, and the surface of the connecting steel plate 8 is coated with a fire retardant coating layer 6.

[0038] Furthermore, the fireproof and corrosion-resistant seismic isolation bearing also includes an elastic shock-absorbing component 9 which is built into the flexible filling material 7 and connected between the upper structure pedestal 1 and the lower foundation pedestal 2.

[0039] Furthermore, the elastic shock-absorbing assembly 9 includes a fixed base plate 90, and a limiting guide hole 900 is opened at the center of gravity of the fixed base plate 90. On one side of the fixed base plate 90, a fixed support frame 91, an elastic element 92 and a pad element 93 are sequentially arranged along the axial direction of the limiting guide hole 900. A guide shaft 94 is sleeved in the limiting guide hole 900, which passes through the fixed support frame 91, the elastic element 92 and the pad element 93 in sequence. A connecting sleeve 95 is also slidably sleeved on the guide shaft 94, and one end of the connecting sleeve 95 is connected to the elastic element 92, and the other end is connected to the connecting steel plate 8 on the lower supporting platform 2.

[0040] Furthermore, the elastic element 92 is composed of a transverse support plate 920 sleeved on the guide shaft 94, two baffles 921 respectively connected to the two ends of the transverse support plate 920, an arc-shaped support member 922 with one end respectively connected to the two baffles 921, and two compression springs 923 connecting the transverse support plate 920 and the fixed support frame 91; the other ends of the two arc-shaped support members 922 are connected to a guide sleeve 923, and the guide sleeve 923 is slidably matched with the guide shaft 94.

[0041] Furthermore, the pad element 93 is composed of a middle connecting plate 930 and two pads 931 connected to two free ends of the middle connecting plate 930 , and the guide shaft 94 is connected at the center of the middle connecting plate 930 .

[0042] Furthermore, a fireproof layer composed of a double layer of fireproof rubber is provided on the outside of the lead core laminated rubber seismic isolation bearing 3. The height and inner diameter of the fireproof layer are equal to those of the lead core laminated rubber seismic isolation bearing 3, and the outer diameter is slightly larger than the lead core laminated rubber seismic isolation bearing 3. It is a hollow annular cylinder, and the hollow part inside the double layer of fireproof rubber is filled with flexible fireproof material. The exposed steel structure parts on the upper and lower sides of the lead core laminated rubber seismic isolation bearing 3 are coated with fireproof paint, and the connection between the double layer of fireproof rubber and the lead core laminated rubber seismic isolation bearing 3 adopts vulcanization connection.

[0043] The double-layer fireproof rubber is flexible and can follow deformation, be vulcanized and sealed; the double-layer fireproof rubber and filled flexible fireproof material have good flame retardant and heat insulation effects.

[0044] The horizontal seismic isolation performance of the lead core laminated rubber seismic isolation bearing 3 is not affected. The double-layer fireproof rubber does not affect the horizontal deformation of the bearing while providing a certain fireproof ability. If there are further requirements for fireproof ability, the cavity inside the fireproof rubber can be completely filled with flexible fireproof materials such as asbestos. Under the condition of meeting the fireproof requirements, the influence on the horizontal deformation capacity of the bearing can be ignored, and the seismic isolation effect is not affected; the connection between the double-layer fireproof rubber and the lead core laminated rubber seismic isolation bearing 3 can be completely sealed by using the existing laminated rubber bearing vulcanization processing procedure. Under the premise of ensuring the sealing performance, there is no need to develop new processing methods, which has certain economic benefits; the exposed steel structure parts on the upper and lower sides of the lead core laminated rubber seismic isolation bearing 3 are all coated with fire-retardant coatings to isolate the steel from the strength loss caused by the increase in temperature.

[0045] The lead core laminated rubber seismic isolation bearing 3 is directly connected to the upper structure pedestal 1 and the lower foundation pedestal 2 by bolts; the double-layer fireproof rubber is a hollow annular cylinder, which is wrapped around the outer periphery of the rubber bearing body; the flexible fireproof material filled in the double-layer fireproof rubber can be asbestos, the double-layer fireproof rubber is the first fireproof layer, and the flexible fireproof material such as asbestos is the second fireproof layer; on the upper and lower surfaces of the upper structure pedestal and the lower foundation pedestal, the steel surface is also coated with fireproof paint. The connection between the double-layer fireproof rubber and the lead core laminated rubber seismic isolation bearing 3 adopts the existing vulcanization process of the lead core laminated rubber bearing.

[0046] Furthermore, the lead core laminated rubber seismic isolation bearing 3 is connected to the upper structure pedestal 1 and the lower foundation pedestal 2 by bolts.

[0047] Furthermore, the flexible filling material 7 is asbestos. The vertical bearing capacity and horizontal seismic isolation capacity of the traditional lead-core laminated rubber seismic isolation bearing can be effectively protected in a fire, and its horizontal deformation capacity will not be affected; in terms of economic applicability, since the present invention adopts the vulcanization process of the traditional lead-core laminated rubber seismic isolation bearing as a means of connecting the fireproof rubber insulation layer and the lead-core laminated rubber seismic isolation bearing body, there is no need to develop new technology, which provides good economic benefits.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fireproof and corrosion-resistant seismic isolation bearing, comprising an upper structure pedestal (1), a lower foundation pedestal (2), a lead core laminated rubber seismic isolation bearing (3), an outer rubber layer (4), an outer ring protective rubber layer (5), a fire retardant coating layer (6), a flexible filling material (7) and a connecting steel plate (8), characterized in that: The outer rubber layer (4) is wrapped around the outer periphery of the lead core laminated rubber seismic isolation support (3) and is vulcanized and connected to the connecting steel plate (8); the outer ring protective rubber layer (5) is arranged in a ring shape around the outer rubber layer (4) and is vulcanized and connected to the outer rubber layer (4); a flexible filling material (7) is filled between the outer rubber layer (4) and the outer ring protective rubber layer (5); and the surface of the connecting steel plate (8) is coated with a fire retardant coating layer (6); The fireproof and corrosion-resistant seismic isolation support further comprises an elastic shock-absorbing component (9) built into the flexible filling material (7) and connected between the upper structure pedestal (1) and the lower foundation pedestal (2); The elastic damping component (9) comprises a fixed base plate (90), a limited guide hole (900) is provided at the center of gravity of the fixed base plate (90), a fixed support frame (91), an elastic element (92) and a pad element (93) are provided in sequence on one side of the fixed base plate (90) along the axial direction of the limited guide hole (900), a guide shaft (94) is sleeved in the limited guide hole (900) and passes through the fixed support frame (91), the elastic element (92) and the pad element (93) in sequence, a connecting sleeve (95) is also slidably sleeved on the guide shaft (94), one end of the connecting sleeve (95) is connected to the elastic element (92), and the other end is connected to the connecting steel plate (8) on the lower foundation platform (2); The elastic element (92) is composed of a transverse support plate (920) sleeved on the guide shaft (94), two baffles (921) respectively connected to the two ends of the transverse support plate (920), an arc-shaped support member (922) one end of which is respectively connected to the two baffles (921), and two compression springs (923) connecting the transverse support plate (920) and the fixed support frame (91); the other ends of the two arc-shaped support members (922) are connected to guide sleeves, and the guide sleeves are slidably matched with the guide shaft (94); The pad element (93) is composed of a middle connecting plate (930) and two pads (931) connected to two free ends of the middle connecting plate (930), and the guide shaft (94) is connected at the center of the middle connecting plate (930).

2. The fireproof and corrosion-resistant seismic isolation bearing according to claim 1 is characterized in that: A fireproof layer composed of a double layer of fireproof rubber is arranged on the outside of the lead core laminated rubber seismic isolation support (3). The height and inner diameter of the fireproof layer are equal to those of the lead core laminated rubber seismic isolation support (3), and the outer diameter is slightly larger than that of the lead core laminated rubber seismic isolation support (3). The fireproof layer is a hollow annular column. The hollow part in the double layer of fireproof rubber is filled with a flexible fireproof material. The exposed steel structure parts on the upper and lower surfaces of the lead core laminated rubber seismic isolation support (3) are coated with fireproof paint. The double layer of fireproof rubber and the lead core laminated rubber seismic isolation support (3) are connected by vulcanization.

3. The fireproof and corrosion-resistant seismic isolation bearing according to claim 2 is characterized in that: The lead core laminated rubber seismic isolation bearing (3) is connected to the upper structure pedestal (1) and the lower foundation pedestal (2) via bolts.

4. The fireproof and corrosion-resistant seismic isolation bearing according to claim 1 is characterized in that: The flexible filling material (7) is asbestos.

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