CN214274335U - Three-dimensional spin shock insulation support - Google Patents
Three-dimensional spin shock insulation support Download PDFInfo
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- CN214274335U CN214274335U CN202023064262.4U CN202023064262U CN214274335U CN 214274335 U CN214274335 U CN 214274335U CN 202023064262 U CN202023064262 U CN 202023064262U CN 214274335 U CN214274335 U CN 214274335U
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- 230000035939 shock Effects 0.000 title claims abstract description 45
- 238000009413 insulation Methods 0.000 title description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 36
- 238000002955 isolation Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
本实用新型属于隔震技术领域，具体涉及一种三维滚球隔震支座。由上支座板、滚球、下支座板、底座、永磁铁一、永磁铁二、闭合导体、永磁铁三组成电涡流水平向隔震器，由上连接板、碟形弹簧、下连接板、钢弹簧组成竖向隔震器；上支座板、下支座板按上下相对设置，上支座板、下支座板的相对应面上分别设有变频凹曲面，其中：上支座板的底部开设上支座板变频凹曲面，下支座板的顶部开设下支座板变频凹曲面，上支座板变频凹曲面和下支座板变频凹曲面沿上下方向两两相对应为一组，每组变频凹曲面之间设置滚球。本实用新型能够同时隔离水平向和竖直向地震力，同时具有耗能能力强、自复位能力好、抗倾覆性好、构造简单等优点。
The utility model belongs to the technical field of vibration isolation, in particular to a three-dimensional rolling ball vibration isolation bearing. The eddy current horizontal shock isolator is composed of upper bearing plate, rolling ball, lower bearing plate, base, permanent magnet 1, permanent magnet 2, closed conductor and permanent magnet 3. The upper connecting plate, disc spring, lower connecting plate The plate and the steel spring form a vertical vibration isolator; the upper support plate and the lower support plate are arranged oppositely up and down, and the corresponding surfaces of the upper support plate and the lower support plate are respectively provided with frequency conversion concave curved surfaces, among which: the upper support plate The bottom of the seat plate is provided with a frequency conversion concave curved surface of the upper support plate, and the top of the lower support plate is provided with a frequency conversion concave curved surface of the lower support plate. As a group, rolling balls are set between each group of variable frequency concave surfaces. The utility model can isolate horizontal and vertical seismic forces at the same time, and has the advantages of strong energy dissipation capability, good self-reset capability, good overturn resistance, simple structure and the like.
Description
Technical Field
The utility model belongs to the technical field of the shock insulation, concretely relates to three-dimensional spin shock insulation support.
Background
The shock insulation principle of the rolling ball support is that the concave curved surface is utilized to prolong the inherent period of the structure, the power amplification effect caused by the earthquake action is greatly reduced, and the earthquake energy is consumed through the friction force generated by the rolling balls and the upper and lower concave curved surfaces in the rolling process. At present, scholars at home and abroad develop various rolling ball shock insulation supports. In 1870, Touaillon invented a rolling ball to be placed in a support plate with spherical concave surfaces on the upper and lower sides; in 1995, Kemeny et al invented a Ball-In-Cone seismic isolation bearing; in 2010, Tsai CS et al propose a rolling ball shock insulation support with damping materials; in 2012, ball disc spring shock isolation devices were proposed by Suiyinger et al; in 2014, visco-elastic damping rolling ball shock insulation supports were proposed by Suiyojie et al; in 2016, Zhaojinping et al proposed a ball-isolated bearing with a brake spring; in 2019, Jochi Qi Yu et al propose a multi-ball seismic isolation bearing; in 2019, schde peak et al propose a frequency conversion curved surface rolling ball shock insulation support with a viscous damper. However, the ball-rolling shock-insulation support has the defects of weak energy consumption capability, poor self-reset capability, no consideration of anti-overturning property and the like, and meanwhile, the ball-rolling shock-insulation support cannot isolate vertical seismic force. The actual earthquake damage shows that the influence of the vertical earthquake cannot be ignored. For example, the north ridge earthquake and the sakashen earthquake both find the case where the vertical acceleration peak approaches or even exceeds the horizontal acceleration peak. Therefore, it is desirable to provide a three-dimensional rolling ball-isolated bearing capable of isolating both horizontal and vertical directions to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a three-dimensional spin isolation bearing, main purpose can keep apart the level simultaneously to with vertical to the earthquake power, and have the power consumption can the reinforce, from the reset ability good, antidumping nature good, advantage such as simple structure.
The technical scheme of the utility model is that:
a three-dimensional ball-isolated mount comprising: by upper bracket board, spin, bottom suspension bedplate, base, attach permanent magnet one in the upper bracket board side, attach two and closed conductors of permanent magnet on the base, attach the eddy current level of three constitutions of permanent magnet below the upper bracket board to the isolator, by the vertical isolator that upper junction plate, belleville spring, lower connecting plate, steel spring series connection are constituteed, concrete structure as follows:
upper bracket board, bottom suspension bedplate are according to relative setting from top to bottom, are equipped with the concave curved surface of frequency conversion on the corresponding face of upper bracket board, bottom suspension bedplate respectively, wherein: the bottom of the upper support plate is provided with an upper support plate frequency conversion concave curved surface, the top of the lower support plate is provided with a lower support plate frequency conversion concave curved surface, the upper support plate frequency conversion concave curved surface and the lower support plate frequency conversion concave curved surface correspond to each other in a group along the up-down direction, and a rolling ball is arranged between each group of frequency conversion concave curved surfaces;
permanent magnets I are arranged on the periphery of the side face of the upper support plate, permanent magnets III are arranged on the periphery of the outer side of the variable-frequency concave curved surface of the upper support plate at the bottom of the upper support plate, and magnetic isolating materials are arranged between the upper support plate and the permanent magnets I and between the upper support plate and the permanent magnets III; the base is of a groove-shaped structure, the middle part of the base is provided with a groove, the top of the base is provided with annular grooves around the outer side of the groove, a vertical shock isolator and a lower support plate are installed in the groove in the middle of the base, and a closed conductor is installed in the annular groove in the top of the base; an annular anti-falling baffle is arranged around the edge of the top of the base, a second magnet which is permanently corresponding to the first permanent magnet is arranged around the inner side surface of the anti-falling baffle, and a magnetism isolating material is arranged between the anti-falling baffle and the second permanent magnet; the vertical shock isolator comprises an upper connecting plate, a disc spring, a lower connecting plate and a steel spring which are sequentially arranged in the groove from top to bottom.
According to the three-dimensional ball shock insulation support, a steel spring is fixed at the bottom in a groove of a base, a lower connecting plate is arranged on the steel spring, the upper concave surface and the lower concave surface of two identical disc springs are oppositely buckled, a lower disc spring is connected with the lower connecting plate through a third fixing bolt, and an upper disc spring is connected with an upper connecting plate through a second fixing bolt; the lower support plate is arranged on the upper connecting plate, and the upper connecting plate is connected with the variable-frequency concave curved surface of the lower support plate through a first fixing bolt.
The three-dimensional rolling ball shock insulation support is characterized in that a first permanent magnet, a second permanent magnet and a third permanent magnet are arranged in a closed mode, the first permanent magnet and the third permanent magnet respectively form a magnetic field with the second permanent magnet, and a closed conductor is arranged in the magnetic field.
The three-dimensional rolling ball shock insulation support has an integrated structure of the anti-dropping baffle and the base.
The three-dimensional spin shock insulation support is characterized in that the frequency conversion concave curved surface of the lower support plate is fixedly connected with the base through an adjustable buckle at the edge of the top of the frequency conversion concave curved surface of the lower support plate.
Three-dimensional spin shock insulation support, upper bracket board frequency conversion concave surface be four and evenly arrange, the concave surface of undersetting board frequency conversion is four and evenly arranges.
The three-dimensional rolling ball shock insulation support is characterized in that four steel springs are uniformly distributed.
The three-dimensional rolling ball shock insulation support is characterized in that the disc spring is a bowl-dish-shaped common disc spring, and the steel spring is a common steel spring.
The utility model provides a theory of operation that its technical problem adopted as follows:
the utility model discloses install between basis (or other fixtures) and shock insulation, the bottom suspension bedplate links firmly with basis (or other fixtures), and the metal flat plate of connection at the upper bracket board links firmly with the shock insulation. When an earthquake comes, the upper support plate of the three-dimensional rolling ball shock insulation support moves on the variable-frequency concave curved surface through the rolling balls, horizontal earthquake force is isolated by prolonging the inherent period of the structure, and earthquake energy is converted into potential energy and heat energy generated by friction to consume earthquake force. However, the three-dimensional rolling ball shock insulation support has insufficient energy consumption capacity, so that the horizontal seismic force is consumed by using damping force (an eddy current principle) generated by cutting magnetic induction lines by a closed conductor in a horizontal shock isolator. The concrete expression is as follows: as shown in fig. 2 to 8, when the upper seat plate 1 and the lower seat plate 2 move relatively, the magnetic field generated by the first permanent magnet 6(N pole), the third permanent magnet 8(N pole) and the second permanent magnet 7(S pole) is cut by the closing coil 9 (the magnetic field formed by the first permanent magnet 6 and the second permanent magnet 7 is shown in fig. 8), and according to the eddy current principle, the closing conductor cuts the magnetic field to generate damping force, so as to consume horizontal seismic force. The vertical seismic force is isolated and consumed through a vertical shock isolator in the lower support plate 2. For the vertical earthquake force acting on the support, under the action of the vertical shock isolator on the upper support plate 1 and the shock insulation object, the negative stiffness generated by the disc spring 14 and the positive stiffness generated by the steel spring 17 are superposed, so that the stiffness of the vertical shock isolator tends to zero (quasi-zero stiffness), and the vertical period of the structure can be prolonged. According to the principle of the rolling ball shock insulation support, when the period is prolonged, the effect of isolating the earthquake force is achieved, the damping of the rolling ball shock insulation support can be increased, and the vertical earthquake force is consumed.
When an earthquake occurs, because the closed conductor moves in a magnetic field, the conductor is subjected to a force for inhibiting the movement of the closed conductor, and then the conductor generates electric potential energy due to the relative movement of the conductor and the magnetic field, so that electric charges move to generate electric eddy currents, the electric eddy currents are subjected to Lorentz forces (F-BqVsin theta, B is magnetic induction intensity T, q is electric quantity of the electric charges, and V is the speed of the electric charges when the conductor cuts the magnetic field) of an external magnetic field, and the direction of the electric eddy currents is always opposite to the movement direction of the conductor, so that resistance is formed. The resistance F is related to the speed V, when the movement speed of the upper support plate becomes smaller, the damping force becomes smaller, and the rolling ball between the upper support plate and the lower support plate is easier to reset. The utility model discloses a three-dimensional spin shock insulation support for prevent that the upper bracket board from taking place to break away from, sets up the anticreep baffle in the bottom suspension bedplate periphery.
The utility model has the advantages and beneficial effects that:
1. the utility model discloses a three-dimensional spin shock insulation support not only can keep apart horizontal seismic force effectively, also can better ground shock insulation vertical seismic force simultaneously.
2. The utility model discloses a concave curved surface of frequency conversion has more excellent shock insulation effect for traditional curved surface form.
3. The utility model discloses an eddy current level to isolator, can solve traditional spin friction pendulum support effectively because self rolling friction power is little, the poor problem of power consumption. Meanwhile, the horizontal vibration isolator is simple in structure and low in cost.
4. The utility model discloses a vertical shock isolator utilizes the quasi-zero rigidity principle can keep apart and consume vertical earthquake power ingeniously. Meanwhile, the horizontal damper is matched with the horizontal damper without mutual interference.
5. The utility model discloses a damping force that the level produced to the shock isolator is relevant with speed, makes spin support have better from reset function.
6. The utility model relates to a shock insulation is effectual, the three-dimensional spin shock insulation support that the mobility is strong, simple to operate can be arranged in precious historical relic, the important precision equipment shock insulation protection of museum.
Drawings
Fig. 1 is a plan view of a three-dimensional rolling ball seismic isolation bearing in the embodiment of the utility model.
Fig. 2 is a cross-sectional view taken along line a-a of fig. 1 according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view B-B of fig. 2 according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of fig. 2 in an embodiment of the present invention.
Fig. 5 is a plan view (a) of a frequency conversion concave curved surface, and a top sectional view (b) and a side sectional view (c) thereof according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view of fig. 2 taken along line D-D in an embodiment of the present invention.
Fig. 7 is a cross-sectional view E-E of fig. 2 in an embodiment of the present invention.
Fig. 8 shows a magnetic field formed by the first permanent magnet 6(N pole) and the second permanent magnet 7(S pole) in fig. 2 according to an embodiment of the present invention.
In the figure: 1 upper bracket board, 2 bases, 3 spin, 4 upper bracket board frequency conversion concave surface, 5 bottom suspension bedplate frequency conversion concave surface, 6 permanent magnet one, 7 permanent magnet two, 8 permanent magnet three, 9 closed conductor, 10 anticreep baffles, 11 magnetism isolating material, 12 adjustable buckle, 13 upper junction plate, 14 belleville spring, 15 fixing bolt one, 16 bottom connection plates, 17 steel spring, 18 bottom suspension bedplate, 19 fixing bolt two, 20 fixing bolt three.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1-7, the utility model discloses a three-dimensional spin isolation bearing mainly includes: by upper bracket board 1, stainless steel spin 3, bottom suspension fagging 18, base 2, attach permanent magnet 6(N utmost point) in 1 side of upper bracket board, attach permanent magnet two 7(S utmost point) and closed conductor 9 on base 2, attach the eddy current level to the isolator that three 8(N utmost points) of permanent magnet constitute below the upper bracket board 1, by upper junction plate 13, belleville spring 14, lower junction plate 16, the vertical isolator of quasi-zero rigidity that steel spring 17 establishes ties and constitutes, concrete structure is as follows:
as shown in fig. 1-4, the upper support plate 1 and the lower support plate 18 are disposed oppositely from top to bottom, and the corresponding surfaces of the upper support plate 1 and the lower support plate 18 are respectively provided with a frequency conversion concave curved surface, wherein: four upper bracket board frequency conversion concave curved surfaces 4 are seted up to the bottom of upper bracket board 1, and four lower bolster board frequency conversion concave curved surfaces 5 are seted up at the top of lower bolster board 18, and upper bracket board frequency conversion concave curved surface 4 and lower bolster board frequency conversion concave curved surface 5 are two liang of correspondences along the upper and lower direction and are a set of, set up spin 3 between every group frequency conversion concave curved surface.
As shown in fig. 2, a first permanent magnet 6(N pole) is installed around the side surface of the upper support plate 1, a third permanent magnet 8(N pole) is installed around the outer side of the frequency conversion concave curved surface 4 of the upper support plate at the bottom of the upper support plate 1, and magnetic isolation materials 11 are respectively arranged between the upper support plate 1 and the first permanent magnet 6 and between the upper support plate 1 and the third permanent magnet 8; the base 2 is of a groove-shaped structure, the middle part of the groove-shaped structure is provided with a groove, the top of the groove-shaped structure is provided with an annular groove on the periphery of the outer side of the groove, a vertical shock isolator and a lower support plate 2 are arranged in the groove in the middle part of the base 2, and a closed conductor 9 is arranged in the annular groove on the top of the base 2; an annular anti-falling baffle 10 is arranged around the edge of the top of the base 2, the anti-falling baffle 10 and the base 2 are of an integral structure, a second magnet 7(S pole) corresponding to the first permanent magnet 6(N pole) is arranged around the inner side face of the anti-falling baffle 10, and a magnetic isolation material 11 is arranged between the anti-falling baffle 10 and the second permanent magnet 7; the first permanent magnet 6, the second permanent magnet 7 and the third permanent magnet 8 are arranged in a closed mode, the first permanent magnet 6 and the third permanent magnet 8 respectively form a magnetic field with the second permanent magnet 7, and the closed conductor 9 is located in the magnetic field.
As shown in fig. 2 and 5 to 7, the vertical vibration isolator comprises an upper connecting plate 13, a disc spring 14, a lower connecting plate 16 and a steel spring 17 which are sequentially arranged in the groove from top to bottom. Wherein: four steel springs 17 are uniformly fixed at the bottom in the groove of the base 2, a lower connecting plate 16 is arranged on the steel springs 17, the upper concave surface and the lower concave surface of two identical disc springs 14 are oppositely buckled together, the lower disc spring 14 is connected with the lower connecting plate 16 through a third fixing bolt 20, and the upper disc spring 14 is connected with the upper connecting plate 13 through a second fixing bolt 19. The lower support plate 2 is arranged on an upper connecting plate 13, and the upper connecting plate 13 is connected with the lower support plate frequency conversion concave curved surface 5 through a first fixing bolt 15. The top edge of the concave curved surface of undersetting board frequency conversion 5 is connected the concave curved surface of undersetting board frequency conversion 5 and is fixed with base 2 through adjustable buckle 12, and the effect of adjustable buckle 12 is: the disc springs 14 and the steel springs 17 can be adjusted to be in a zero stiffness state according to the weight of the seismic isolation object. When an earthquake occurs, the lower support plate frequency conversion concave curved surface 5 cannot be separated from the adjustable buckle 12.
As shown in fig. 2, 5 and 6, the disc spring 14 is a dish-shaped ordinary disc spring, the steel spring 17 is an ordinary steel spring, and the stiffness values of the disc spring 14 and the steel spring 17 are determined according to the weight of the upper seismic isolation object. In addition, the magnetic shielding material 11 may be made of a magnetic superconducting ceramic material.
The utility model discloses in, the meaning of frequency conversion concave curved surface is: the frequency conversion surface function is converted from an elliptic function, and the function formula is as follows:
where the constant b is the minor axis length (mm) of the ellipse and d is a constant relating the major axis of the ellipse to the displacement of the support, see literature: pranesh Murnal and Ravi Sinha. Behavior of Torque Coupled Structures with Variable Frequency Pendulum Isolator [ J].JOURNAL OF STRUCTURAL ENGINEERING,2004,130:1041-1054.
The result shows, the utility model discloses the electric eddy current principle that the level adopted to the isolator, because the damping force that this attenuator produced is relevant with speed, consequently can improve the power consumption ability of support, do not influence the self-restoration of support again. Vertical shock insulator adopts zero rigidity principle, because this vertical device has better isolation vertical seismic force, has solved that traditional spin isolation bearing can't keep apart vertical seismic force and is located the lower support board frequency conversion concave curved surface simultaneously, can the collaborative work and mutual noninterference with horizontal shock isolation device. In addition, the upper support plate is provided with a metal anti-falling baffle plate to overturn.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023064262.4U CN214274335U (en) | 2020-12-18 | 2020-12-18 | Three-dimensional spin shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023064262.4U CN214274335U (en) | 2020-12-18 | 2020-12-18 | Three-dimensional spin shock insulation support |
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| CN214274335U true CN214274335U (en) | 2021-09-24 |
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| CN202023064262.4U Expired - Fee Related CN214274335U (en) | 2020-12-18 | 2020-12-18 | Three-dimensional spin shock insulation support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648336A (en) * | 2020-12-18 | 2021-04-13 | 吉林农业大学 | Three-dimensional spin shock insulation support |
| CN114046326A (en) * | 2021-11-11 | 2022-02-15 | 兰州理工大学 | A kind of electromagnetic friction pendulum vibration isolation support and wiring method of coil winding |
| CN115370861A (en) * | 2022-08-12 | 2022-11-22 | 西安石油大学 | Cable-stayed pipe bridge anti-seismic device and anti-seismic method |
-
2020
- 2020-12-18 CN CN202023064262.4U patent/CN214274335U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648336A (en) * | 2020-12-18 | 2021-04-13 | 吉林农业大学 | Three-dimensional spin shock insulation support |
| CN114046326A (en) * | 2021-11-11 | 2022-02-15 | 兰州理工大学 | A kind of electromagnetic friction pendulum vibration isolation support and wiring method of coil winding |
| CN114046326B (en) * | 2021-11-11 | 2024-02-23 | 兰州理工大学 | Electromagnetic friction pendulum vibration reduction and isolation support and wiring method of coil winding |
| CN115370861A (en) * | 2022-08-12 | 2022-11-22 | 西安石油大学 | Cable-stayed pipe bridge anti-seismic device and anti-seismic method |
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