CN109881784B - Cambered surface sliding type three-dimensional shock insulation support - Google Patents

Cambered surface sliding type three-dimensional shock insulation support Download PDF

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Publication number
CN109881784B
CN109881784B CN201910058534.2A CN201910058534A CN109881784B CN 109881784 B CN109881784 B CN 109881784B CN 201910058534 A CN201910058534 A CN 201910058534A CN 109881784 B CN109881784 B CN 109881784B
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China
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arc
plate
sliding
sliding block
shaped
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CN109881784A (en
Inventor
何文福
刘科
李韶平
黄小林
杨杰
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Shanghai Nuclear Engineering Research and Design Institute Co Ltd
University of Shanghai for Science and Technology
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Shanghai Nuclear Engineering Research and Design Institute Co Ltd
University of Shanghai for Science and Technology
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Abstract

The invention discloses a cambered surface sliding type three-dimensional shock insulation support which comprises a top plate, an upper sliding block, a connecting rod, a lower sliding block, an arc-shaped sliding rail, a spring, a connecting plate, a rubber support and a bottom plate, wherein the top plate is provided with a plurality of sliding holes; the arc-shaped sliding rail is provided with a bottom and a top surface, the top surface is provided with a sliding rail, and one end of the sliding rail faces to the other end of the sliding rail in an arc-shaped downward direction; the upper end and the lower end of the connecting rod are respectively fixedly connected with the upper sliding block and the lower sliding block, the top end of the upper sliding block is slidably supported in the bottom surface directional sliding of the top plate, the lower end of the lower sliding block is slidably supported on the top surface sliding rail of the arc-shaped sliding rail, and the contact surface is made of friction materials; the upper end of the spring is fixedly connected to the upper end and the lower end of the lower sliding block and is fixedly connected to the connecting plate; the bottom fixed connection of arc slide rail is at the connecting plate top surface, and connecting plate bottom surface fixed connection rubber support top, bottom plate and rubber support bottom fixed connection. The invention can solve the gravity bearing problem in the vertical shock insulation design, has simple structure and clear stress and is beneficial to large-scale production and use.

Description

Cambered surface sliding type three-dimensional shock insulation support
Technical Field
The invention relates to the technical field of environmental vibration and shock resistance and shock absorption, in particular to a cambered surface sliding type three-dimensional shock insulation support which can be used for shock absorption/vibration absorption of common buildings, special structures, bridges and mechanical equipment.
Background
The seismic isolation technology for building structure foundations has achieved remarkable research results, but most of domestic and foreign research is about horizontal seismic isolation, and still has great challenges in the aspect of vertical seismic isolation.
At present, many scholars at home and abroad try to develop a plurality of three-dimensional shock isolation devices for isolating horizontal and vertical earthquakes simultaneously, and most of the three-dimensional shock isolation devices are combined shock isolation supports which utilize air springs and hydraulic oil to carry out vertical shock isolation and convert vertical deformation into horizontal displacement of the supports. The maximum difficulty of vertical shock insulation is the contradiction between the requirement of larger bearing capacity of the upper structure and the smaller rigidity of the shock insulation layer. Many three-dimensional seismic isolation devices can not solve the problem well, and when the weight of the upper structure is large, the influence on a seismic isolation layer caused by the self weight of the structure can not fully exert the performance of the seismic isolation device and can not be stable, so that the possibility of large-scale production and use of the seismic isolation device is limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cambered surface sliding type three-dimensional shock insulation support, which effectively solves the contradiction between the requirement of larger bearing capacity of an upper structure and smaller rigidity of a shock insulation layer, gives full play to the performance of a shock insulation device, is stable and reliable, and makes large-scale production and use of the shock insulation device possible.
The technical scheme adopted by the invention is as follows:
the utility model provides a three-dimensional isolation bearing of cambered surface type that slides which characterized in that: the device comprises a top plate, an upper slide block, a connecting rod, a lower slide block, an arc-shaped slide rail, a spring, a connecting plate, a rubber support and a bottom plate; the arc-shaped sliding rail is provided with a bottom and a top surface, the top surface is provided with a sliding rail, and one end of the sliding rail faces downwards in an arc shape from the other end; the upper end and the lower end of the connecting rod are respectively fixedly connected with the upper sliding block and the lower sliding block, the top end of the upper sliding block is slidably supported on the bottom surface of the top plate to slide directionally, the lower end of the lower sliding block is slidably supported on the top surface sliding rail of the arc-shaped sliding rail, and the contact surface is made of friction materials; the upper end of the spring is fixedly connected to the upper end and the lower end of the lower sliding block and is fixedly connected to the connecting plate; the bottom fixed connection of arc slide rail is at the connecting plate top surface, and connecting plate bottom surface fixed connection rubber support top, bottom plate and rubber support bottom fixed connection.
Preferably, the spring is a variable curvature arc spring or a straight spring. The variable curvature arc spring can be arranged along the top surface slide rail of the arc slide rail, and the included angle between the straight spring and the ground can be changed when the lower slide block is subjected to vertical load and slides along the arc slide rail.
Preferably, the arc of the slide rail on the top surface of the arc slide rail is an arc surface or a variable curvature arc surface.
Preferably, the top end of the upper sliding block is slidably embedded and supported on the bottom surface of the top plate in a sliding manner and slides directionally, and the lower end of the lower sliding block is slidably embedded and supported on the top surface sliding rail of the arc-shaped sliding rail, so that the vertical tension requirement of the three-dimensional shock-insulation support is met.
Preferably, the number of the arc-shaped slide rails is at least two, the arc-shaped guide rails are uniformly distributed, the curvature of the arc surfaces of the arc-shaped slide rails can be consistent or inconsistent, meanwhile, the spring stiffness corresponding to different arc-shaped slide rails can be consistent or inconsistent, and the determination can be carried out according to the stress requirement.
The contact surface can be made of friction material, one of the two objects can be made of friction material, and the two objects can also be made of friction material.
Under the effect of the dead weight of the upper structure and the earthquake, the lower slider slides along the arc-shaped slide rail to compress the spring, the upper structure is supported by the reaction force of the spring, the large bearing of small rigidity is realized, and the gravity bearing problem in the vertical shock insulation design is solved.
According to the cambered surface sliding type three-dimensional shock insulation support, the reaction force of the spring is utilized to bear the gravity of the upper structure, the stability is high, and three-dimensional shock insulation is realized.
Compared with the prior art, the invention has the following obvious prominent substantive characteristics and obvious advantages:
1. the invention can realize the vertical shock insulation function, can be used together with a horizontal shock insulation system, and can realize the purpose of three-dimensional shock absorption/vibration.
2. The invention utilizes the smaller reaction force of the arc spring with variable curvature or the straight spring with variable angle to support the larger gravity of the upper structure, realizes the decoupling of the gravity and the mass of the upper structure and avoids the influence of the gravity on the vertical shock insulation design.
3. The arc-shaped guide rail can be an arc or a variable curvature curved surface, the spring can be arranged along the arc surface of the arc-shaped guide rail or along an oblique straight line, and the vertical small or no rigidity of the spring can be realized all the time under the action of an earthquake.
4. The number of the arc-shaped guide rails is at least 2, the number of the arc-shaped guide rails can be three or more, the curvature of the arc surfaces among different arc-shaped slide rails can be consistent or inconsistent, meanwhile, the rigidity of the spring can be changed, the spring is suitable for upper structures with different weights and shapes, the application range is wide, the structure is regular and simple, the stress performance is stable, and the spring has the conditions of large-scale production and use.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the first embodiment in FIG. 1;
FIG. 3 is a schematic angle-changing diagram of a second straight spring according to an embodiment of the present invention;
FIG. 4 is a schematic view of a three-straight spring and a variable curvature arc slide rail according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention showing the four top plate and the upper slider embedded in the connecting structure;
FIG. 6 is a schematic view of an arc-shaped slide rail according to a first embodiment of the present invention;
FIG. 7 is a schematic view of an arcuate spring according to a first embodiment of the present invention;
fig. 8 is a perspective view of the connecting plate, the rubber mount and the base plate of the present invention.
Reference numerals in the figures refer to:
1-a top plate;
2, an upper sliding block;
3-a connecting rod;
4-lower slide block;
5-arc slide rail;
6-a spring;
7-a connecting plate;
8-a rubber support;
9-bottom plate.
Detailed Description
Referring to fig. 1, 2, 6, 7 and 8, an embodiment of the present invention includes: the device comprises a top plate 1, an upper sliding block 2, a connecting rod 3, a lower sliding block 4, an arc-shaped sliding rail 5, a spring 6, a connecting plate 7, a rubber support 8 and a bottom plate 9. The arc-shaped sliding rail is a vertical plate and is provided with a horizontal bottom surface and an arc-shaped top surface, the arc-shaped top surface is provided with the sliding rail, and one end of the sliding rail faces downwards in an arc shape from the other end; the upper end and the lower end of the connecting rod 3 are respectively fixedly connected with an upper sliding block 2 and a lower sliding block 4, the top end of the upper sliding block 2 is slidably supported on the bottom surface of the top plate 1 to slide directionally (by being provided with a guide rail or a guide groove), the lower end of the lower sliding block 4 is slidably supported on the top surface sliding rail of the arc-shaped sliding rail 5, and the contact surface is made of friction materials; the upper end of the spring 6 is fixedly connected to the upper end and the lower end of the lower sliding block 4 and is fixedly connected to the connecting plate 7; the bottom of the arc-shaped sliding rail 5 is fixedly connected to the top surface of the connecting plate 7, the bottom surface of the connecting plate 7 is fixedly connected to the top of the rubber support 8, and the bottom plate 9 is fixedly connected to the bottom of the rubber support 8.
The number of the arc-shaped slide rails 5 in the first embodiment is four, the arc of the slide rail on the top surface is an arc surface, the curvature of the arc surface is consistent, the springs 6 are arc springs and are arranged along the slide rail on the top surface of the arc-shaped slide rail, and meanwhile, the rigidity of the four springs 6 is consistent; the friction material used for the contact surface can be used for one of the two objects or both the two objects.
As shown in fig. 2, the arc spring 6 is arranged along the arc slide rail 5, and the lower slider 4 slides along the arc slide rail 5 under the action of the upper structure.
Referring to fig. 3, a second embodiment of the present invention is different from the first embodiment in that: the spring 6 is a straight spring, the included angle between the lower slider and the ground can be changed in the process that the lower slider is subjected to vertical load and slides along the arc-shaped slide rail, and under the action of the upper structure, the lower slider 4 slides along the arc-shaped slide rail 5, and then the straight spring 6 is compressed and rotates.
Referring to fig. 4, a third embodiment of the present invention is different from the first embodiment in that: the spring 6 is a straight spring, the arc of the arc slide rail top surface is a variable curvature arc surface, the curvature is determined according to the stress requirement, and the lower slider 4 slides along the variable curvature arc slide rail 5 under the action of vertical load, so that the vertical rigidity change of the three-dimensional shock insulation support is realized.
Referring to fig. 5, a fourth embodiment of the present invention is different from the first embodiment in that: the top end of the upper sliding block 2 is slidably embedded and supported on the bottom surface of the top plate 1 to slide directionally, and the lower end of the lower sliding block 4 is slidably embedded and supported on a top surface sliding rail (not shown) of the arc-shaped sliding rail 5, so that the vertical tension requirement of the three-dimensional shock insulation support is met.
When superstructure shape is irregular, can adopt a plurality of arc guide rails, under the vertical load effect, the slider on a plurality of arc guide rails slides simultaneously, receives the effect of spring reaction power separately and keeps balance. When the number of the arc-shaped slide rails 5 is multiple, the guide rails are uniformly distributed, the curvature of the arc surfaces of the arc-shaped slide rails 5 can be consistent or inconsistent, and the rigidity of the springs 6 corresponding to different arc-shaped slide rails 5 can be consistent or inconsistent.
As shown in fig. 6, in order to meet different rigidity requirements, the arc-shaped slide rail 5 may be an arc surface or a variable curvature arc surface.
As shown in fig. 7, the spring 6 may be an arc-shaped spring, and is disposed along the arc-shaped slide rail 5.
As shown in fig. 8, the rubber mount 8 can achieve three-dimensional seismic isolation.

Claims (6)

1. The utility model provides a three-dimensional isolation bearing of cambered surface type that slides which characterized in that: comprises a top plate (1), an upper sliding block (2), a connecting rod (3), a lower sliding block (4), an arc-shaped sliding rail (5), a spring (6), a connecting plate (7), a rubber support (8) and a bottom plate (9); the arc-shaped sliding rail is provided with a bottom and a top surface, the top surface is provided with a sliding rail, and one end of the sliding rail faces downwards in an arc shape from the other end; the upper end and the lower end of the connecting rod (3) are respectively fixedly connected with the upper sliding block (2) and the lower sliding block (4), the top end of the upper sliding block (2) is slidably supported on the bottom surface of the top plate (1) to slide directionally, the lower end of the lower sliding block (4) is slidably supported on a sliding rail on the top surface of the arc-shaped sliding rail (5), and a contact surface is made of friction materials; the upper end of the spring (6) is fixedly connected to the upper end and the lower end of the lower sliding block (4) and is fixedly connected to the connecting plate (7); the bottom of the arc-shaped sliding rail (5) is fixedly connected to the top surface of the connecting plate (7), the bottom surface of the connecting plate (7) is fixedly connected to the top of the rubber support (8), and the bottom plate (9) is fixedly connected to the bottom of the rubber support (8).
2. The cambered surface sliding type three-dimensional seismic isolation bearing according to claim 1, characterized in that: the spring (6) is a variable curvature arc spring or a straight spring.
3. The cambered surface sliding type three-dimensional seismic isolation bearing according to claim 1, characterized in that: the arc of the arc-shaped sliding rail top surface sliding rail is an arc surface or a variable curvature arc surface, and the curvature is determined according to the stress requirement.
4. The cambered surface sliding type three-dimensional seismic isolation bearing according to claim 1, characterized in that: the top end of the upper sliding block (2) is slidably embedded and supported on the bottom surface of the top plate (1) to slide directionally, and the lower end of the lower sliding block (4) is slidably embedded and supported on the top surface sliding rail of the arc-shaped sliding rail (5).
5. The cambered surface sliding type three-dimensional seismic isolation bearing according to claim 1, characterized in that: the number of the arc-shaped slide rails (5) is at least two, the arc-shaped slide rails are uniformly distributed, the curvature of the arc surfaces of the arc-shaped slide rails (5) can be consistent or inconsistent, and the rigidity of the springs (6) corresponding to different arc-shaped slide rails (5) can be consistent or inconsistent.
6. The cambered surface sliding type three-dimensional seismic isolation bearing according to claim 1, characterized in that: the contact surface can be made of friction material, one of the two objects can be made of friction material, and the two objects can also be made of friction material.
CN201910058534.2A 2019-01-22 2019-01-22 Cambered surface sliding type three-dimensional shock insulation support Active CN109881784B (en)

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CN109881784B true CN109881784B (en) 2021-08-31

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CN111156913A (en) * 2020-01-04 2020-05-15 江苏平山交通设施有限公司 Self-sensing intelligent bridge support and system based on Internet of things technology

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