A tensile three-dimensional vibration isolation device with vertical damping

Abstract

The present invention relates to a tensile three-dimensional vibration isolation device with vertical damping, which belongs to the field of civil engineering vibration control technology. It includes a vertical stiffness element, an auxiliary vertical stiffness element, a sealed porous viscous damping cylinder, an upper cover plate, a single-sided concave upper plate, a single-sided concave bottom plate, a double-sided concave middle plate and a convex sliding body; the three-dimensional vibration isolation device also includes an upper shearing piece, a lower cylinder with an intermediate horizontal plate, a shape memory alloy wire, an upper overhanging plate with friction material and a lower overhanging plate with friction material, and the two ends of the double-sided concave middle plate are provided with cantilevers; the upper shearing piece is fixed to the center of the lower surface of the upper cover plate, the lower cylinder with the intermediate horizontal plate is fixed to the center of the upper surface of the single-sided concave upper plate, and the two ends of the shape memory alloy wire are fixed to the outer wall of the lower cylinder with the intermediate horizontal plate. The present invention can effectively solve the problems of tensile reliability and structural stability under three-dimensional vibration isolation of construction engineering, and truly realize the vibration and vibration dual control of construction engineering based on three-dimensional vibration isolation.

Description

Technical Field

[0001] The invention relates to a tensile three-dimensional vibration isolation device with vertical damping, belonging to the technical field of civil engineering vibration control. Background Art

[0002] Three-dimensional vibration isolation technology can effectively isolate the three-dimensional vibration of building structures, and is mainly used for earthquake (vibration) protection of major engineering structures. Existing three-dimensional vibration isolation technology mostly uses rubber bearings as horizontal isolation (vibration) components, and vertical isolation mostly uses thick rubber, and a small amount of disc springs as vertical isolation (vibration) elements. The three-dimensional isolation effect is achieved by combining horizontal isolation components with vertical isolation components.

[0003] The existing three-dimensional vibration isolation devices are limited by the low tensile properties of rubber materials and the lack of tensile properties of disc springs. When applied to engineering structures under high-intensity earthquakes, there are problems such as unreliable tensile properties and high risk of structural overturning. At the same time, the existing three-dimensional vibration isolation cannot solve the problems of industrial vibration and earthquake vibration at the same time, which seriously restricts the engineering promotion and application of the existing three-dimensional vibration isolation technology. For example, a three-dimensional vibration isolation device combining an inertia capacity and a friction pendulum bearing disclosed in CN111288119A, a compact three-dimensional friction pendulum isolation bearing disclosed in CN112780093A, a three-dimensional isolation bearing based on a friction pendulum disclosed in CN113502934A, and a three-dimensional multi-stage vibration isolation device with an inertia capacity and a friction pendulum disclosed in CN216921581U all have the above-mentioned problem of not being able to solve the two vibrations of industrial vibration and earthquake vibration at the same time.

[0004] Therefore, new technical methods are needed to at least partially solve the deficiencies in the prior art. Summary of the invention

[0005] In order to overcome the practical engineering problems of existing three-dimensional vibration isolation technology, such as unreliable tensile resistance, high risk of overturning in high-intensity earthquake zones, and inability to coordinately solve industrial vibration and earthquake, the present invention proposes a tensile three-dimensional vibration isolation device with vertical damping, which is used to solve the problems of tensile reliability and structural stability under three-dimensional vibration isolation of construction projects, and truly realize dual vibration control of construction projects based on three-dimensional vibration isolation.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A tensile three-dimensional vibration isolation device with vertical damping, comprising a vertical stiffness element, an auxiliary vertical stiffness element, a sealed porous viscous damping cylinder, an upper cover plate, a single-sided concave upper plate, a single-sided concave bottom plate, a double-sided concave middle plate and a convex sliding body; wherein the upper and lower ends of the vertical stiffness element, the auxiliary vertical stiffness element and the sealed porous viscous damping cylinder are respectively connected to the upper cover plate and the single-sided concave upper plate; the upper cover plate, the single-sided concave upper plate, the double-sided concave middle plate and the single-sided concave bottom plate are arranged in sequence from top to bottom; two convex sliding bodies are respectively located between the lower concave surface of the single-sided concave upper plate and the upper concave surface of the double-sided concave middle plate, and between the lower concave surface of the double-sided concave middle plate and the upper concave surface of the single-sided concave bottom plate;

[0008] The three-dimensional vibration isolation device also includes an upper shearing piece, a lower cylinder with an intermediate horizontal plate, a shape memory alloy wire, an upper overhanging plate with a friction material, and a lower overhanging plate with a friction material. Both ends of the double-sided concave intermediate plate are provided with lifting plates, so that the end portions present a "mountain" shape;

[0009] The upper shearing piece, the lower cylinder with the middle horizontal plate, and the shape memory alloy wire constitute a shear damping device, and the upper overhanging plate with friction material, the lower overhanging plate with friction material, and the pick plates at both ends of the double-sided concave middle plate constitute a friction limit tension device;

[0010] The upper shearing piece is fixed to the center of the lower surface of the upper cover plate, the lower cylinder with the middle horizontal plate is fixed to the center of the upper surface of the single-sided concave upper plate, the two ends of the shape memory alloy wire are fixed to the outer wall of the lower cylinder with the middle horizontal plate, the upper shearing piece is aligned with the center of the lower cylinder with the middle horizontal plate and enters the lower cylinder, the lower ends of the two outer wall plates of the upper shearing piece and the upper end of the middle horizontal plate of the lower cylinder are respectively in contact with the middle part of the shape memory alloy wire, and in the initial state after the device is assembled in place, the shape memory alloy wire on the facade is in a "W" shape;

[0011] The upper overhanging plate with friction material and the lower overhanging plate with friction material are respectively fixed to the ends of the single-sided concave upper plate and the single-sided concave bottom plate; the pick plates at both ends of the double-sided concave middle plate are tightly buckled on the outer sides of the upper overhanging plate with friction material and the lower overhanging plate with friction material, and deform by friction with them, thereby playing the role of friction energy dissipation, limiting the horizontal deformation amplitude of the three-dimensional vibration isolation device, and resisting pulling and pulling.

[0012] Furthermore, the vertical rigidity elements are symmetrically arranged in a rectangular shape along the periphery of the upper cover plate, and the auxiliary vertical rigidity elements are placed inside the vertical rigidity elements and are centrally aligned.

[0013] Furthermore, a screw is provided on the three-dimensional vibration isolation device, the lower end of which is fixed to the upper surface of the single-sided concave upper plate, passes through the upper cover plate and the vertical stiffness elements at the four corners, and is tightened and fixed by an anti-vibration nut.

[0014] Furthermore, no auxiliary vertical rigidity elements are provided in the vertical rigidity elements at the four corner positions.

[0015] Furthermore, a plurality of sealed porous viscous damping cylinders are arranged in a circular symmetry along the periphery of the lower cylinder with the middle transverse plate, and are arranged on the inner side of a plurality of vertical stiffness elements around the upper cover plate.

[0016] Furthermore, the curvature of the curved surface of the convex sliding body matches the curvature of the single-sided concave upper plate, the double-sided concave middle plate and the single-sided concave bottom plate, and friction sliding materials are provided between the contacting curved surfaces.

[0017] Furthermore, the upper overhanging plate with friction material and the lower overhanging plate with friction material are arranged along the periphery of the single-sided concave upper plate and the single-sided concave bottom plate respectively.

[0018] Furthermore, an upper end plate is provided on the top of the upper cover plate, and a tic-tac-toe-shaped stiffening plate is provided between the upper end plate and the upper cover plate.

[0019] Further, the cylinder body of the sealed porous viscous damping cylinder is fixed on the single-sided concave upper plate, and the piston of the sealed porous viscous damping cylinder is fixed on the upper cover plate; or, the cylinder body of the sealed porous viscous damping cylinder is fixed on the upper cover plate, and the piston of the sealed porous viscous damping cylinder is fixed on the single-sided concave upper plate.

[0020] In actual work, an upper end plate is arranged on the top of the upper cover plate, and the upper load is transmitted to the three-dimensional vibration isolation device through the upper end plate; under normal use conditions, when the three-dimensional vibration isolation device is under pressure, the vertical stiffness element and the auxiliary vertical stiffness element produce vertical deformation, and the shape memory alloy wire between the upper shear member and the lower cylinder with the middle cross plate is stretched and deformed to provide vertical damping; when an earthquake occurs, the vertical compressive deformation is further increased, and the shape memory alloy wire provides stiffness and greater damping energy dissipation. At the same time, the sealed porous viscous damping cylinder produces viscous damping energy dissipation, and the vertical deformation of the device is effectively controlled; the screw, anti-vibration nut and The upper overhanging plate with friction material and the lower overhanging plate with friction material connect the upper cover plate, the single-sided concave upper plate and the single-sided concave bottom plate to form a vertical tensile structure to prevent the device from being pulled apart vertically. The upper overhanging plate with friction material and the lower overhanging plate with friction material are respectively fixed to the ends of the single-sided concave upper plate and the single-sided concave bottom plate, and are deformed by friction with the cantilever plates at the ends of the double-sided concave middle plate. At the same time, the contact surfaces of the single-sided concave upper plate, the single-sided concave bottom plate and the double-sided concave middle plate are all provided with friction and sliding materials, which produce friction deformation under horizontal earthquakes, form horizontal vibration isolation, and provide damping energy consumption while effectively reducing the effects of horizontal earthquakes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The upper cover plate, the single-sided concave upper plate and the single-sided concave bottom plate are connected as a whole by using tensile bolts, high-rigidity elastic parts and flexible tensile parts. Under the premise of ensuring that the horizontal deformation and vertical deformation are not affected, an effective vertical tensile structure is formed to ensure the tensile reliability of the three-dimensional vibration isolation device;

[0023] 2. Vertical low-frequency large bearing capacity is provided through vertical stiffness elements and auxiliary vertical stiffness elements. Shape memory alloy wire and sealed pore viscous damping cylinder provide vertical damping under vibration, effectively reducing vertical vibration and earthquake. Through the sliding deformation and friction between the double-sided concave middle plate, the single-sided concave upper plate and the convex sliding body, the horizontal natural vibration period of the system is effectively extended while providing damping energy consumption, effectively reducing the horizontal earthquake effect. Through the effective combination of the above-mentioned vertical elements and horizontal elements, stable and reliable three-dimensional vibration isolation is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the assembly plane of the tensile three-dimensional vibration isolation device with vertical damping of the present invention;

[0025] Figure 2 for Figure 1 AA cross-sectional diagram of ;

[0026] Figure 3 for Figure 1 Schematic diagram of the BB cross section. Description of the drawings:

[0028] 1-vertical stiffness element, 2-auxiliary vertical stiffness element, 31-upper shear member, 32-lower cylinder with middle cross plate, 4-shape memory alloy wire, 5-sealed porous viscous damping cylinder, 6-upper cover plate, 7-single-sided concave upper plate, 8-single-sided concave bottom plate, 9-double-sided concave middle plate, 10-convex sliding body, 11-screw, 12-anti-vibration nut, 13-stiffening plate, 14-upper end plate, 15-upper overhanging plate with friction material, 16-lower overhanging plate with friction material. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 The present invention is further described in detail with specific implementations to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0030] Example 1

[0031] As attached Figure 1-3As shown, a tensile three-dimensional vibration isolation device with vertical damping of this embodiment includes a vertical stiffness element 1, an auxiliary vertical stiffness element 2, a sealed porous viscous damping cylinder 5, an upper cover plate 6, a single-sided concave upper plate 7, a single-sided concave bottom plate 8, a double-sided concave middle plate 9, a convex sliding body 10, and a screw 11. Among them, the upper and lower ends of the 12 vertical stiffness elements 1, the 8 auxiliary vertical stiffness elements 2, and the sealed porous viscous damping cylinder 5 are respectively connected to the upper cover plate 6 and the single-sided concave upper plate 7. The upper cover plate 6, the single-sided concave upper plate 7, the double-sided concave middle plate 9, and the single-sided concave bottom plate 8 are arranged in sequence from top to bottom. Two convex sliding bodies 10 are respectively located between the lower concave surface of the single-sided concave upper plate 7 and the upper concave surface of the double-sided concave middle plate 9, and between the lower concave surface of the double-sided concave middle plate 9 and the upper concave surface of the single-sided concave bottom plate 8. The 12 vertical stiffness elements 1 are arranged symmetrically in a rectangular shape along the periphery of the upper cover plate 6, and the 8 auxiliary vertical stiffness elements 2 are placed inside the vertical stiffness elements 1 and aligned in the center. In addition, an upper end plate 14 is provided on the top of the upper cover plate 6, and a tic-tac-toe-shaped stiffening plate 13 is provided between the upper end plate 14 and the upper cover plate 6.

[0032] like Figure 1 As shown, the three-dimensional vibration isolation device is also provided with a screw 11, the lower end of which is fixed to the upper surface of the single-sided concave upper plate 7, passes through the upper cover plate 6 and the vertical stiffness elements 1 at the four corners, and is tightened and fixed by anti-vibration nuts 12. At this time, no auxiliary vertical stiffness elements 2 are provided in the vertical stiffness elements 1 at the four corners.

[0033] like Figure 1-2 As shown, the three-dimensional vibration isolation device also includes an upper shearing piece 31, a lower cylinder 32 with an intermediate horizontal plate, a shape memory alloy wire 4, an upper overhanging plate 15 with friction material, and a lower overhanging plate 16 with friction material. The two ends of the double-sided concave middle plate 9 are provided with pick plates, so that the end presents a "mountain" shape. Among them, the upper shearing piece 31, the lower cylinder 32 with the intermediate horizontal plate, and the shape memory alloy wire 4 constitute a shear damping device, and the upper overhanging plate 15 with friction material, the lower overhanging plate 16 with friction material, and the pick plates at both ends of the double-sided concave middle plate 9 constitute a friction limit tensile device. Specifically, as Figure 2As shown, the upper shearing piece 31 is fixed to the center of the lower surface of the upper cover plate 6, the lower cylinder 32 with the middle horizontal plate is fixed to the center of the upper surface of the single-sided concave upper plate 7, and the two ends of the shape memory alloy wire 4 are fixed to the outer wall of the lower cylinder 32 with the middle horizontal plate. The upper shearing piece 31 is aligned with the center of the lower cylinder 32 with the middle horizontal plate and enters the lower cylinder 32. The lower ends of the two outer wall plates of the upper shearing piece 31 and the upper end of the middle horizontal plate of the lower cylinder 32 are respectively in contact with the middle part of the shape memory alloy wire 4. When the device is assembled in place, the shape memory alloy wire 4 is in a "W" shape on the vertical surface. Six sealed porous viscous damping cylinders 5 are arranged in a circular symmetry along the periphery of the lower cylinder 32 with the middle horizontal plate, and are arranged on the inner side of multiple vertical stiffness elements 1 around the upper cover plate 6. In this embodiment, the cylinder body of the sealed porous viscous damping cylinder 5 is fixed on the single-sided concave upper plate 7, and the piston of the sealed porous viscous damping cylinder 5 is fixed on the upper cover plate 6.

[0034] like Figure 2-3 As shown, the upper overhanging plate 15 with friction material and the lower overhanging plate 16 with friction material are respectively fixed to the ends of the single-sided concave upper plate 7 and the single-sided concave bottom plate 8. The pick plates at both ends of the double-sided concave middle plate 9 are tightly buckled on the outer sides of the upper overhanging plate 15 with friction material and the lower overhanging plate 16 with friction material, and deform by friction with them, thereby playing the role of friction energy dissipation, limiting the horizontal deformation amplitude of the three-dimensional vibration isolation device, and resisting pulling and pulling. In particular, the upper overhanging plate 15 with friction material and the lower overhanging plate 16 with friction material are respectively arranged around the single-sided concave upper plate 7 and the single-sided concave bottom plate 8.

[0035] In this embodiment, the curvature of the curved surface of the convex sliding body 10 matches the curvature of the single-sided concave upper plate 7, the double-sided concave middle plate 9 and the single-sided concave bottom plate 8, and friction sliding materials are provided between the contacting curved surfaces.

[0036] In actual work, the upper load is transmitted to the three-dimensional vibration isolation device through the upper end plate 14. Under normal use conditions, when the three-dimensional vibration isolation device is compressed, the vertical stiffness element 1 and the auxiliary vertical stiffness element 2 produce a vertical deformation of 20 mm, and the shape memory alloy wire 4 between the upper shear member 31 and the lower cylinder 32 with the middle cross plate is stretched and deformed to provide vertical damping. When an earthquake occurs, the vertical compressive deformation is further increased, and the shape memory alloy wire 4 provides stiffness and greater damping energy dissipation. At the same time, the sealed porous viscous damping cylinder 5 produces viscous damping energy dissipation, and the vertical deformation of the device is effectively controlled. The upper cover plate 6, the single-sided concave upper plate 7 and the single-sided concave bottom plate 8 are connected by a screw 11, an anti-vibration nut 12, an upper overhanging plate 15 with friction material, and a lower overhanging plate 16 with friction material to form a vertical tensile structure to prevent the device from being pulled apart vertically. The upper overhanging plate 15 with friction material and the lower overhanging plate 16 with friction material are respectively fixed to the ends of the single-sided concave upper plate 7 and the single-sided concave bottom plate 8, and are deformed by friction with the cantilevers at the ends of the double-sided concave middle plate 9. At the same time, the contact surfaces of the single-sided concave upper plate 7, the single-sided concave bottom plate 8 and the double-sided concave middle plate 9 are all provided with friction and sliding materials, which produce friction deformation under horizontal earthquakes, thereby forming horizontal vibration isolation and providing damping energy consumption, thereby effectively reducing the effects of horizontal earthquakes.

[0037] The above is only a preferred embodiment of the present invention, and does not impose any formal limitation on the structure of the present invention. The layout type and the number of uses of the present invention are not limited to this example, and can be optimized and selected according to the actual project. Any modification, equivalent change and decoration of the above embodiment based on the technical principle of the present invention that does not deviate from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tensile three-dimensional vibration isolation device with vertical damping, comprising a vertical stiffness element (1), an auxiliary vertical stiffness element (2), a sealed porous viscous damping cylinder (5), an upper cover plate (6), a single-sided concave upper plate (7), a single-sided concave bottom plate (8), a double-sided concave middle plate (9), and a convex sliding body (10); wherein: The upper and lower ends of the vertical stiffness element (1), the auxiliary vertical stiffness element (2), and the sealed porous viscous damping cylinder (5) are respectively connected to the upper cover plate (6) and the single-sided concave upper plate (7); the upper cover plate (6), the single-sided concave upper plate (7), the double-sided concave middle plate (9), and the single-sided concave bottom plate (8) are arranged in sequence from top to bottom; two convex sliding bodies (10) are respectively located between the lower concave surface of the single-sided concave upper plate (7) and the upper concave surface of the double-sided concave middle plate (9), and between the lower concave surface of the double-sided concave middle plate (9) and the upper concave surface of the single-sided concave bottom plate (8), characterized in that: The three-dimensional vibration isolation device further comprises an upper shearing member (31), a lower cylinder (32) with an intermediate horizontal plate, a shape memory alloy wire (4), an upper overhanging plate (15) with a friction material, and a lower overhanging plate (16) with a friction material, wherein the two ends of the double-sided concave intermediate plate (9) are provided with overhanging plates, so that the ends present a "mountain" shape; The upper shearing member (31), the lower cylinder (32) with the middle horizontal plate, and the shape memory alloy wire (4) constitute a shear damping device, and the upper overhanging plate (15) with friction material, the lower overhanging plate (16) with friction material, and the pick plates at both ends of the double-sided concave middle plate (9) constitute a friction limit tension device; The upper shearing piece (31) is fixed to the center of the lower surface of the upper cover plate (6), the lower cylinder (32) with the middle horizontal plate is fixed to the center of the upper surface of the single-sided concave upper plate (7), the two ends of the shape memory alloy wire (4) are fixed to the outer wall of the lower cylinder (32) with the middle horizontal plate, the upper shearing piece (31) is aligned with the center of the lower cylinder (32) with the middle horizontal plate and enters the lower cylinder (32), the lower ends of the two outer wall plates of the upper shearing piece (31) and the upper end of the middle horizontal plate of the lower cylinder (32) are respectively in contact with the middle part of the shape memory alloy wire (4), and in the initial state after the device is assembled in place, the shape memory alloy wire (4) on the facade is in a "W" shape; The upper outrigger plate (15) with friction material and the lower outrigger plate (16) with friction material are respectively fixed to the ends of the single-sided concave upper plate (7) and the single-sided concave bottom plate (8); the pick plates at both ends of the double-sided concave middle plate (9) are tightly buckled on the outer sides of the upper outrigger plate (15) with friction material and the lower outrigger plate (16) with friction material, and deform by friction therewith, thereby playing the role of friction energy dissipation, limiting the horizontal deformation amplitude of the three-dimensional vibration isolation device, and resisting pulling and pulling; The vertical rigidity elements (1) are symmetrically arranged in a rectangular shape along the periphery of the upper cover plate (6), and the auxiliary vertical rigidity elements (2) are placed inside the vertical rigidity elements (1) and are centrally aligned; A plurality of sealed porous viscous damping cylinders (5) are arranged in a circular symmetric manner along the periphery of a lower cylinder (32) with a middle transverse plate, and are arranged on the inner side of a plurality of vertical stiffness elements (1) around an upper cover plate (6).

2. The tensile three-dimensional vibration isolation device with vertical damping according to claim 1, characterized in that: The three-dimensional vibration isolation device is also provided with a screw rod (11), the lower end of which is fixed to the upper surface of the single-sided concave upper plate (7), passes through the upper cover plate (6) and the vertical stiffness elements (1) at the four corner positions, and is tightened and fixed by an anti-vibration nut (12).

3. The tensile three-dimensional vibration isolation device with vertical damping according to claim 2, characterized in that: No auxiliary vertical rigidity elements (2) are arranged in the vertical rigidity elements (1) at the four corner positions.

4. The tensile three-dimensional vibration isolation device with vertical damping according to claim 1, characterized in that: The curvature of the curved surface of the convex sliding body (10) matches the curvature of the single-sided concave upper plate (7), the double-sided concave middle plate (9) and the single-sided concave bottom plate (8), and friction sliding material is provided between the contacting curved surfaces.

5. The tensile three-dimensional vibration isolation device with vertical damping according to claim 1, characterized in that: An upper overhanging plate (15) with friction material and a lower overhanging plate (16) with friction material are arranged along the periphery of the single-sided concave upper plate (7) and the single-sided concave bottom plate (8), respectively.

6. The tensile three-dimensional vibration isolation device with vertical damping according to claim 1, characterized in that: An upper end plate (14) is also provided on the top of the upper cover plate (6), and a tic-tac-toe-shaped stiffening plate (13) is provided between the upper end plate (14) and the upper cover plate (6).

7. The tensile three-dimensional vibration isolation device with vertical damping according to claim 1, characterized in that: The cylinder body of the sealed porous viscous damping cylinder (5) is fixed on a single-sided concave upper plate (7), and the piston of the sealed porous viscous damping cylinder (5) is fixed on an upper cover plate (6); or, the cylinder body of the sealed porous viscous damping cylinder (5) is fixed on an upper cover plate (6), and the piston of the sealed porous viscous damping cylinder (5) is fixed on a single-sided concave upper plate (7).

8. A tensile three-dimensional vibration isolation device with vertical damping according to any one of claims 1 to 7, characterized in that: In actual operation, an upper end plate (14) is arranged on the top of the upper cover plate (6), and the upper load is transmitted to the three-dimensional vibration isolation device through the upper end plate (14); under normal use conditions, when the three-dimensional vibration isolation device is compressed, the vertical stiffness element (1) and the auxiliary vertical stiffness element (2) produce vertical deformation, and the shape memory alloy wire (4) between the upper shear member (31) and the lower cylinder (32) with the middle cross plate is stretched and deformed to provide vertical damping; when an earthquake occurs, the vertical compression deformation is further increased, and the shape memory alloy wire (4) provides stiffness and greater damping energy dissipation, while the sealed porous viscous damping cylinder (5) produces viscous damping energy dissipation, and the vertical deformation of the device is effectively controlled; the screw rod (11), the anti-vibration nut (12) and the belt The upper extension plate (15) of friction material and the lower extension plate (16) with friction material connect the upper cover plate (6), the single-sided concave upper plate (7) and the single-sided concave bottom plate (8) to form a vertical tensile structure to prevent the device from being pulled apart vertically. The upper extension plate (15) with friction material and the lower extension plate (16) with friction material are respectively fixed to the ends of the single-sided concave upper plate (7) and the single-sided concave bottom plate (8) and are deformed by friction with the cantilever plates at the ends of the double-sided concave middle plate (9). At the same time, the contact surfaces of the single-sided concave upper plate (7), the single-sided concave bottom plate (8) and the double-sided concave middle plate (9) are all provided with friction sliding materials, which generate friction deformation under horizontal earthquakes, form horizontal vibration isolation and provide damping energy consumption, thereby effectively reducing the horizontal earthquake effect.

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