阅读说明：本技术 一种基于摩擦摆的三维隔震支座 (Three-dimensional shock insulation support based on friction pendulum ) 是由 岳红原 邓烜 雷远德 李戚齐 赵远征 叶烈伟 于 2021-01-07 设计创作，主要内容包括：一种基于摩擦摆的三维隔震支座,包括摩擦摆第一导向杆、组合碟簧、第二导向杆、螺旋弹簧、环形缸体、粘滞液体和活塞盖；环形缸体设在摩擦摆顶部；环形缸体的内侧面上部,设有条形口；第一导向杆沿环向设在环形缸体内侧；第二导向杆沿环向间隔设在环形缸体内；活塞盖包括插筒、顶盖和限位板；插筒插接在环形缸体内侧；顶盖封在插筒顶部；组合碟簧对应套设在第一导向杆上；限位板连接在插筒的外侧面上,从条形口伸入环形缸体的内腔中；限位板上开有穿孔和阻尼孔；螺旋弹簧套在第二导向杆上；粘滞液体填在环形缸体内腔中。本发明解决了传统的三维隔震支座的竖向承载能力较小、加载后容器内油压较大,且限制了支座的竖向变形能力的技术问题。(A three-dimensional shock isolation support based on a friction pendulum comprises a first guide rod of the friction pendulum, a combined disc spring, a second guide rod, a spiral spring, an annular cylinder body, viscous liquid and a piston cover; the annular cylinder body is arranged at the top of the friction pendulum; the upper part of the inner side surface of the annular cylinder body is provided with a strip-shaped opening; the first guide rod is arranged on the inner side of the annular cylinder body along the annular direction; the second guide rods are arranged in the annular cylinder body at intervals along the annular direction; the piston cover comprises an inserting cylinder, a top cover and a limiting plate; the inserting cylinder is inserted inside the annular cylinder body; the top cover is sealed at the top of the inserting cylinder; the combined disc spring is correspondingly sleeved on the first guide rod; the limiting plate is connected to the outer side surface of the inserting cylinder and extends into the inner cavity of the annular cylinder body from the strip-shaped opening; the limiting plate is provided with a through hole and a damping hole; the spiral spring is sleeved on the second guide rod; the viscous liquid is filled in the inner cavity of the annular cylinder body. The invention solves the technical problems that the vertical bearing capacity of the traditional three-dimensional shock insulation support is small, the oil pressure in a container is large after loading, and the vertical deformation capacity of the support is limited.)

1. A three-dimensional shock isolation support based on a friction pendulum comprises the friction pendulum; the method is characterized in that: the device also comprises a first guide rod (1), a combined disc spring (2), a second guide rod (3), a spiral spring (4), an annular cylinder body (5), viscous liquid (6) and a piston cover (7); the annular cylinder body (5) is arranged at the top of the friction pendulum and close to the edge, and the inside of the annular cylinder body (5) is a cavity; a strip-shaped opening (9) is arranged on the upper part of the inner side surface of the annular cylinder body (5) along the annular direction; the first guide rods (1) are arranged in a group and are arranged on the inner side of the annular cylinder body (5) along the annular direction, and the lower ends of the first guide rods (1) are fixedly connected with the top surface of the friction pendulum; the second guide rods (3) are provided with a group and are arranged in the annular cylinder body (5) at intervals along the annular direction; the piston cover (7) comprises an insertion cylinder (7.1), a top cover (7.2) and a limiting plate (7.3); the inserting cylinder (7.1) is inserted into the inner side of the annular cylinder body (5), and the outer side surface of the inserting cylinder (7.1) is tightly attached to the inner side surface of the annular cylinder body (5); the top cover (7.2) is sealed at the top of the inserting cylinder (7.1), and a blind hole (8) is formed in the bottom of the top cover (7.2) and corresponds to the position of the first guide rod (1); the combined disc spring (2) is correspondingly sleeved on the first guide rod (1) and is pressed between the top cover (7.2) and the friction pendulum; the limiting plate (7.3) is annular and is connected to the outer side surface of the inserting cylinder (7.1) at a position corresponding to the strip-shaped opening (9), and the limiting plate (7.3) extends into the inner cavity of the annular cylinder body (5) from the strip-shaped opening (9); a through hole (10) is formed in the position, corresponding to the second guide rod (3), on the plate surface of the limiting plate (7.3); damping holes (11) are further formed in the plate surface of the limiting plate (7.3) at intervals along the annular direction; the spiral spring (4) is correspondingly sleeved on the second guide rod (3) and is pressed at the bottom of the limiting plate (7.3); the viscous liquid (6) is filled in the inner cavity of the annular cylinder body (5).

2. The three-dimensional seismic isolation bearing based on the friction pendulum of claim 1, wherein: the friction pendulum comprises a lower plate seat (12), a spherical crown body (13) and an upper plate seat (14); the top surface of the lower plate seat (12) is a concave curved surface, and a lower polytetrafluoroethylene layer (16) is arranged in the concave curved surface; the upper plate seat (14) is arranged above the lower plate seat (12), and the bottom surface of the upper plate seat (14) is an upper concave curved surface; an upper polytetrafluoroethylene layer (15) is arranged in the upper concave curved surface; the spherical crown body (13) is arranged between the lower polytetrafluoroethylene layer (16) and the upper polytetrafluoroethylene layer (15).

3. The three-dimensional seismic isolation bearing based on the friction pendulum of claim 1, wherein: the height of the first guide rod (1) is 20-800 mm; the height of the second guide rod (3) is 15-750 mm.

4. The three-dimensional seismic isolation bearing based on the friction pendulum of claim 1, wherein: the annular cylinder body (5) comprises a bump (5.1), an inner baffle (5.2) and a sealing cover (5.3); the convex block (5.1) is annular and is fixed at the top of the friction pendulum; the horizontal section of the inner baffle (5.2) is annular and is arranged along the inner edge of the top surface of the lug (5.1); the sealing cover (5.3) is composed of a horizontal plate section (5.3.1) and a vertical plate section (5.3.2); the vertical plate section (5.3.2) is fixedly connected to the top of the friction pendulum, and the inner side surface of the vertical plate section (5.3.2) is tightly attached to the outer side surface of the bump (5.1); the top of the vertical plate section (5.3.2) exceeds the top of the inner baffle (5.2); the horizontal plate section (5.3.1) is positioned on the inner side of the top of the vertical plate section (5.3.2), and the inner end of the horizontal plate section (5.3.1) is flush with the inner side surface of the inner baffle (5.2); the strip-shaped opening (9) is formed by a gap between the inner baffle (5.2) and the horizontal plate section (5.3.1).

5. The three-dimensional seismic isolation bearing based on the friction pendulum is characterized in that: the height of the top of the vertical plate section (5.3.2) exceeding the top of the inner baffle (5.2) is adapted to the displacement of the piston cover (7) moving up and down, and is 10-500 mm.

6. The three-dimensional seismic isolation bearing based on the friction pendulum of claim 1, wherein: an upper connecting bolt (17) is embedded in the top surface of the friction pendulum at intervals; lower connecting bolts (18) are embedded in the bottom surface of the friction pendulum at intervals.

7. The three-dimensional seismic isolation bearing based on the friction pendulum of claim 1, wherein: the viscous liquid (6) is oil, silicone oil or silica gel; the number of the damping holes (11) is 4-16; the diameter of the damping hole (11) is 2 mm-30 mm.

Technical Field

The invention relates to a shock insulation support, in particular to a three-dimensional shock insulation support based on a friction pendulum.

Background

The existing seismic isolation technology is mainly horizontal seismic isolation, the problem of vertical seismic isolation is less researched, and the influence of the vertical seismic action on the structure is considered for buildings and large-span space structures (the vertical response of the structure is obvious) in a near fault area (the vertical seismic motion is obvious); and for the subway upper cover and the building structures near the subway, the living comfort of people is seriously influenced by the vibration problem generated to the building in the operation process of the subway. Therefore, it is necessary to further develop the research of the three-dimensional seismic isolation bearing, and the vertical vibration/vibration of the structure can be reduced while the horizontal seismic isolation effect is ensured.

At present, a disc spring group is arranged on the upper part of a rubber shock insulation support of the existing three-dimensional shock insulation support, and a viscous liquid damper is arranged in the space inside the disc spring. However, the single disc spring group is adopted in the three-dimensional shock insulation support, the vertical bearing capacity of the spring group is small, the viscous liquid damper in the closed container is located in the closed container in the middle of the disc spring, small vertical deformation can be provided by means of compression of the volume of liquid, the oil pressure in the container is large after loading, and the vertical deformation capacity of the support is limited.

Disclosure of Invention

The invention aims to provide a three-dimensional shock insulation support based on a friction pendulum, and aims to solve the technical problems that the vertical bearing capacity of the traditional three-dimensional shock insulation support is small, the oil pressure in a container after loading is large, and the vertical deformation capacity of the support is limited.

In order to achieve the purpose, the invention adopts the following technical scheme.

A three-dimensional shock isolation support based on a friction pendulum comprises the friction pendulum; the device also comprises a first guide rod, a combined disc spring, a second guide rod, a spiral spring, an annular cylinder body, viscous liquid and a piston cover; the annular cylinder body is arranged at the top of the friction pendulum and close to the edge, and a cavity is formed inside the annular cylinder body; a strip-shaped opening is arranged on the upper part of the inner side surface of the annular cylinder body along the annular direction; the first guide rods are arranged on the inner side of the annular cylinder body in the annular direction, and the lower ends of the first guide rods are fixedly connected with the top surface of the friction pendulum; the second guide rods are arranged in a group and are arranged in the annular cylinder body at intervals along the annular direction; the piston cover comprises an insertion cylinder, a top cover and a limiting plate; the insertion cylinder is inserted into the inner side of the annular cylinder body, and the outer side surface of the insertion cylinder is tightly attached to the inner side surface of the annular cylinder body; the top cover is sealed at the top of the inserting cylinder, and a blind hole is formed in the bottom of the top cover at a position corresponding to the first guide rod; the combined disc spring is correspondingly sleeved on the first guide rod and is pressed between the top cover and the friction pendulum; the limiting plate is annular and is connected to the outer side surface of the inserting cylinder at a position corresponding to the strip-shaped opening, and the limiting plate extends into the inner cavity of the annular cylinder body from the strip-shaped opening; a through hole is formed in the plate surface of the limiting plate at a position corresponding to the second guide rod; damping holes are further formed in the plate surface of the limiting plate at intervals along the annular direction; the spiral spring is correspondingly sleeved on the second guide rod and is in compression joint with the bottom of the limiting plate; the viscous liquid is filled in the inner cavity of the annular cylinder body.

Preferably, the friction pendulum comprises a lower plate seat, a spherical crown body and an upper plate seat; the top surface of the lower plate seat is a concave curved surface, and a lower polytetrafluoroethylene layer is arranged in the concave curved surface; the upper plate seat is arranged above the lower plate seat, and the bottom surface of the upper plate seat is an upper concave curved surface; an upper polytetrafluoroethylene layer is arranged in the upper concave curved surface; the spherical crown body is arranged between the lower polytetrafluoroethylene layer and the upper polytetrafluoroethylene layer.

Preferably, the height of the first guide rod is 20 mm-800 mm; the height of the second guide rod is 15 mm-750 mm.

Preferably, the annular cylinder body comprises a lug, an inner baffle and a sealing cover; the convex block is annular and is fixed at the top of the friction pendulum; the horizontal section of the inner baffle is annular and is arranged along the inner edge of the top surface of the bump; the sealing cover consists of a horizontal plate section and a vertical plate section; the vertical plate section is fixedly connected to the top of the friction pendulum, and the inner side surface of the vertical plate section is tightly attached to the outer side surface of the lug; the top of the vertical plate section exceeds the top of the inner baffle; the horizontal plate section is positioned on the inner side of the top of the vertical plate section, and the inner end of the horizontal plate section is flush with the inner side surface of the inner baffle; the strip-shaped opening is formed by a gap between the inner baffle and the horizontal plate section.

Preferably, the height of the top of the vertical plate section, which exceeds the top of the inner baffle plate, is adapted to the displacement of the piston cover in vertical motion, and is 10-500 mm.

Preferably, upper connecting bolts are embedded in the top surface of the friction pendulum at intervals; and lower connecting bolts are embedded in the bottom surface of the friction pendulum at intervals.

Preferably, the viscous liquid is oil or silicone oil or silica gel; the number of the damping holes is 4-16; the diameter of the damping hole is 2 mm-30 mm.

Compared with the prior art, the invention has the following characteristics and beneficial effects.

1. According to the invention, the vertical bearing capacity of the support is effectively improved through a plurality of groups of vertical combined disc springs, the energy consumption capacity of the support in vertical deformation is improved by utilizing the energy consumption principle of the viscous liquid damper, the anti-overturning capacity of the three-dimensional shock insulation support is further enhanced by the spiral spring arranged at the lower part of the piston, and meanwhile, the horizontal shock insulation effect of the friction pendulum is ensured through mutual occlusion of the piston rod and the middle base plate.

2. The invention arranges a plurality of groups of vertical combined disc springs (the disc spring combination mode is determined by vertical bearing capacity) at the middle part of the upper part of a horizontal shock insulation support (belonging to the prior art) of a friction pendulum, and arranges spiral springs at the periphery of the horizontal shock insulation support; the first guide rod is vertically placed, the second guide rod for combining the disc spring and the spiral spring is ensured to correspond to the through hole, and the vertical energy consumption performance of the three-dimensional shock insulation support is effectively improved through the structural design of the three-dimensional shock insulation support.

3. According to the invention, a certain vertical pressure is applied to the first guide rod, the annular cylinder body is installed, and the sealing effect is ensured; then viscous liquid is injected into the annular cylinder body, and the pressure on the first guide rod is slowly unloaded; the design of the invention has the advantages of larger vertical bearing capacity of the three-dimensional shock insulation support, smaller oil pressure in a loaded container and large vertical deformation capacity of the support.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a vertical sectional structure of the three-dimensional seismic isolation bearing of the present invention.

Fig. 2 is a schematic structural view of the annular cylinder body arranged on the upper plate seat in the invention.

Fig. 3 is a schematic structural view of the lower plate holder of the present invention.

Fig. 4 is a schematic view of the structure of the piston cap of the present invention.

Reference numerals: 1-first guide rod, 2-combined disc spring, 3-second guide rod, 4-spiral spring, 5-annular cylinder body, 5.1-lug, 5.2-inner baffle, 5.3-seal cover, 5.3.1-horizontal plate section, 5.3.2-vertical plate section, 6-viscous liquid, 7-piston cover, 7.1-inserting cylinder, 7.2-top cover, 7.3-limit plate, 8-blind hole, 9-strip-shaped opening, 10-perforation, 11-damping hole, 12-lower plate seat, 13-spherical crown body, 14-upper plate seat, 15-upper polytetrafluoroethylene layer, 16-lower polytetrafluoroethylene layer, 17-upper connecting bolt, 18-lower connecting bolt, 19-lower buttress and 20-upper buttress.

Detailed Description

As shown in fig. 1-4, the three-dimensional vibration isolation support based on the friction pendulum comprises the friction pendulum; the device also comprises a first guide rod 1, a combined disc spring 2, a second guide rod 3, a spiral spring 4, an annular cylinder body 5, viscous liquid 6 and a piston cover 7; the annular cylinder body 5 is arranged at the top of the friction pendulum and close to the edge, and the inside of the annular cylinder body 5 is a cavity; a strip-shaped opening 9 is arranged on the upper part of the inner side surface of the annular cylinder body 5 along the annular direction; the first guide rods 1 are arranged in a group and are arranged on the inner side of the annular cylinder body 5 along the annular direction, and the lower ends of the first guide rods 1 are fixedly connected with the top surface of the friction pendulum; the second guide rods 3 are arranged in a group and are arranged in the annular cylinder body 5 at intervals along the annular direction; the piston cover 7 comprises an insertion cylinder 7.1, a top cover 7.2 and a limiting plate 7.3; the inserting cylinder 7.1 is inserted into the inner side of the annular cylinder 5, and the outer side surface of the inserting cylinder 7.1 is tightly attached to the inner side surface of the annular cylinder 5; the top cover 7.2 is sealed at the top of the inserting cylinder 7.1, and a blind hole 8 is formed in the bottom of the top cover 7.2 at a position corresponding to the first guide rod 1; the combined disc spring 2 is correspondingly sleeved on the first guide rod 1 and is pressed between the top cover 7.2 and the friction pendulum; the limiting plate 7.3 is annular and is connected to the outer side surface of the inserting cylinder 7.1 at a position corresponding to the strip-shaped port 9, and the limiting plate 7.3 extends into the inner cavity of the annular cylinder body 5 from the strip-shaped port 9; a through hole 10 is formed in the plate surface of the limiting plate 7.3 at a position corresponding to the second guide rod 3; damping holes 11 are further formed in the plate surface of the limiting plate 7.3 at intervals along the annular direction; the spiral spring 4 is correspondingly sleeved on the second guide rod 3 and is pressed at the bottom of the limiting plate 7.3 in a pressing mode; the viscous liquid 6 is filled in the inner cavity of the annular cylinder 5.

In this embodiment, the friction pendulum includes a lower plate base 12, a spherical crown body 13 and an upper plate base 14; the top surface of the lower plate seat 12 is a concave curved surface, and a lower polytetrafluoroethylene layer 16 is arranged in the concave curved surface; the upper plate seat 14 is arranged above the lower plate seat 12, and the bottom surface of the upper plate seat 14 is an upper concave curved surface; an upper polytetrafluoroethylene layer 15 is arranged in the upper concave curved surface; the spherical cap body 13 is arranged between the lower polytetrafluoroethylene layer 16 and the upper polytetrafluoroethylene layer 15.

In the embodiment, the height of the first guide rod 1 is 20 mm-800 mm; the height of the second guide rod 3 is 15 mm-750 mm.

In this embodiment, the annular cylinder 5 includes a bump 5.1, an inner baffle 5.2 and a sealing cover 5.3; the lug 5.1 is annular and is fixed at the top of the friction pendulum; the horizontal section of the inner baffle 5.2 is annular and is arranged along the inner edge of the top surface of the lug 5.1; the seal cover 5.3 consists of a horizontal plate section 5.3.1 and a vertical plate section 5.3.2; the vertical plate section 5.3.2 is fixedly connected to the top of the friction pendulum, and the inner side surface of the vertical plate section 5.3.2 is tightly attached to the outer side surface of the bump 5.1; the top of the vertical plate section 5.3.2 exceeds the top of the inner baffle 5.2; the horizontal plate section 5.3.1 is positioned at the inner side of the top of the vertical plate section 5.3.2, and the inner end of the horizontal plate section 5.3.1 is flush with the inner side surface of the inner baffle 5.2; the strip-shaped opening 9 is formed by the gap between the inner baffle 5.2 and the horizontal plate section 5.3.1.

In this embodiment, the height of the top of the vertical plate section 5.3.2 exceeding the top of the inner baffle 5.2 is 10mm to 500mm corresponding to the displacement of the piston cover 7 moving up and down.

In this embodiment, the top surface of the friction pendulum is embedded with upper connecting bolts 17 at intervals; lower connecting bolts 18 are embedded on the bottom surface of the friction pendulum at intervals.

In this embodiment, the viscous liquid 6 is oil, silicone oil, or silica gel; the number of the damping holes 11 is 4-16; the diameter of the damping hole 11 is 2 mm-30 mm.

In this embodiment, the height of the bump 5.1 is 5 mm-10 mm.

In this embodiment, the three-dimensional seismic isolation bearing is arranged between the lower support pillar 19 and the upper support pillar 20,

in this embodiment, the lower connecting bolt 18 is embedded in the bottom of the lower plate base 12; the lower plate holder 12 is connected to a lower pier 19 by a lower connecting bolt 18.

In this embodiment, the upper connecting bolt 17 is embedded in the bottom of the upper plate seat 14; the upper plate seat 14 is connected with an upper pier 20 through an upper connecting bolt 17.

In the embodiment, the working principle of the three-dimensional shock insulation support based on the friction pendulum is that under the action of a horizontal earthquake, the engagement of the piston rod and the middle seat plate ensures that the vertical shock insulation system at the upper part has higher horizontal rigidity, and the horizontal deformation of the vertical shock insulation system is mainly concentrated on the horizontal swing of the friction pendulum, so that the shock insulation effect of the three-dimensional shock insulation support on the action of the horizontal earthquake is ensured; under the excitation of vertical earthquake or subway vibration, the friction pendulum provides larger vertical rigidity, the vertical deformation of the three-dimensional shock isolation support is mainly concentrated on the combined disc spring 2, the friction between the superposed disc spring pieces of the combined disc spring 2 can provide certain friction energy consumption, the vertical motion of the piston rod drives the piston to move up and down, viscous fluid flows back and forth through the damping hole 11 to generate damping force, and the energy consumption capacity of the three-dimensional shock isolation support during the vertical motion is further effectively improved.

The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.