CN113803400A - A multi-dimensional magnetic suspension vibration isolation energy dissipation device - Google Patents
A multi-dimensional magnetic suspension vibration isolation energy dissipation device Download PDFInfo
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- CN113803400A CN113803400A CN202111049216.3A CN202111049216A CN113803400A CN 113803400 A CN113803400 A CN 113803400A CN 202111049216 A CN202111049216 A CN 202111049216A CN 113803400 A CN113803400 A CN 113803400A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
- F16F15/007—Piezoelectric elements being placed under pre-constraint, e.g. placed under compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- Chemical & Material Sciences (AREA)
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- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a multidimensional magnetic suspension vibration isolation energy dissipation device which comprises a base plate, a horizontal vibration reduction unit, a vertical vibration reduction unit and a friction pendulum assembly, wherein the horizontal vibration reduction unit is arranged on the base plate; the friction pendulum assembly comprises a friction pendulum upper base and a friction pendulum lower base; a friction pendulum lower base is arranged between the two horizontal vibration reduction units, a vertical vibration reduction unit is arranged above the friction pendulum lower base, and a friction pendulum upper base is arranged at the bottom of the vertical vibration reduction unit. Compared with the prior vibration isolation support, the multidimensional vibration isolation energy dissipation device has the advantages that: (1) vibration isolation and energy consumption in two dimensions of horizontal and vertical can be realized, the working frequency range of the vibration isolation device is expanded, and the vibration attenuation effect is greatly improved; (2) the vibration isolation system with the positive and negative stiffness spring elements connected in parallel is formed by utilizing the negative stiffness characteristic of the disc spring assembly under a certain condition, so that the bearing capacity of the whole structure is increased, and low-frequency vibration isolation can be realized; (3) the vibration isolation efficiency of the device under large vibration is further enhanced by utilizing the magnetic suspension vibration isolation technology.
Description
Technical Field
The invention relates to the field of vibration reduction, in particular to a multidimensional magnetic suspension vibration isolation energy consumption device.
Background
In recent years, ocean platforms have become important structures in production and life, can play a role in exploiting resources such as drilling and oil extraction, and can also complete activities such as collection, observation and navigation. The ocean platform generally adopts the vibration isolation support to alleviate the influence of external factors such as earthquake, sea wind, sea water on it, however traditional vibration isolation support such as rubber support or rubber alloy support can only keep apart the vibration of vertical direction, and the vibration isolation effect is limited, and is not suitable for adverse circumstances. Therefore, a novel and multidimensional vibration isolation support is needed to meet the requirements of vibration reduction and isolation of the ocean platform.
Disclosure of Invention
In order to solve the technical problems, the invention mainly aims to provide a multidimensional magnetic suspension vibration isolation and energy dissipation device to reduce the harm caused by multidimensional vibration with high load and high strength in the prior art.
In order to achieve the above object, the present invention adopts the following technical solutions.
A multidimensional magnetic suspension vibration isolation energy dissipation device comprises a base plate, a horizontal vibration reduction unit, a vertical vibration reduction unit and a friction pendulum assembly; the friction pendulum assembly comprises a friction pendulum upper base and a friction pendulum lower base; the two horizontal vibration reduction units are provided with a friction pendulum lower base, a vertical vibration reduction unit is arranged above the friction pendulum lower base, and a friction pendulum upper base is arranged at the bottom of the vertical vibration reduction unit; magnets are arranged in the upper friction pendulum base and the lower friction pendulum base, and the magnets in the upper friction pendulum base and the magnets in the lower friction pendulum base repel each other.
Further, the horizontal vibration reduction unit comprises a first shell, and the first shell comprises a first side plate, a left end plate and a right end plate which are arranged at the left end and the right end of the first side plate; the first side plate is made of deformable materials; the inner surfaces of the left end plate and the right end plate are respectively provided with first piezoelectric ceramics, and a first spring is arranged between the first piezoelectric ceramics of the left end plate and the first piezoelectric ceramics of the right end plate; a first coil is wound outside the first side plate, and the first coil and the first piezoelectric ceramic form a closed loop; magnetorheological fluid is filled in the first shell.
Further, the outer surfaces of the left end plate and the right end plate are respectively provided with a rubber layer.
Furthermore, the vertical vibration reduction unit comprises a second shell, the second shell comprises a second side plate, an upper end plate and a lower end plate, the upper end plate and the lower end plate are arranged at the upper end and the lower end of the second side plate, second piezoelectric ceramics are respectively arranged on the inner surfaces of the upper end plate and the lower end plate, a first electromagnet is arranged in the center of the lower surface of the upper end plate, a second electromagnet is arranged in the center of the upper surface of the lower end plate, the first electromagnet and the second electromagnet respectively form a closed loop with the second piezoelectric ceramics, and the polarities of two opposite poles of the first electromagnet and the second electromagnet after being electrified are opposite; magnetorheological fluid is filled in the second shell; the second side plate is made of deformable materials.
Furthermore, two groups of disc spring assemblies which are arranged left and right are arranged between the upper end plate and the lower end plate, and each group of disc spring assemblies is formed by superposing a plurality of disc springs; the outer sides of the two groups of disc spring assemblies are respectively provided with a second spring, the upper end of each second spring is connected with the upper end plate, and the lower end of each second spring is connected with the lower end plate.
Further, the lower surface of the upper end plate is fixedly connected with a lead screw, a through hole is formed in the center of the lower end plate, the lower end of the lead screw penetrates through the lower end plate from the through hole, a mass block is sleeved on the lead screw, a limiting frame is arranged outside the mass block, the top of the limiting frame is connected with the upper end plate, and the bottom of the limiting frame is connected with the lower end plate.
Furthermore, a second coil is wound on the lead screw.
Furthermore, an upper cavity is arranged in the upper base of the friction pendulum, a permanent magnet is vertically arranged in the upper cavity, a lower cavity is arranged in the lower base of the friction pendulum, a third electromagnet is vertically arranged in the lower cavity, and the lower end of the permanent magnet is the same as the magnetic pole at the upper end of the third electromagnet when the third electromagnet is electrified.
The vibration control switch is fixedly connected to the upper end plate or the lower end plate, the vibration control switch is connected in series with a power supply loop of the third electromagnet, and the vibration control switch is used for switching on the loop of the third electromagnet when vertical vibration is detected to be larger than a set threshold value.
Furthermore, the first spring, the second spring and the disc spring are made of memory alloy materials.
Further, the first side plate and the second side plate are made of rubber.
Compared with the prior vibration isolation support, the multidimensional vibration isolation energy dissipation device has the advantages that: (1) vibration isolation and energy consumption in two dimensions of horizontal and vertical can be realized, the working frequency range of the vibration isolation device is expanded, and the vibration attenuation effect is greatly improved; (2) the vibration isolation system with the positive and negative stiffness spring elements connected in parallel is formed by utilizing the negative stiffness characteristic of the disc spring assembly under a certain condition, so that the bearing capacity of the whole structure is increased, and low-frequency vibration isolation can be realized; (3) the vibration isolation efficiency of the device under large vibration is further enhanced by utilizing the magnetic suspension vibration isolation technology.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a multi-dimensional magnetic suspension vibration isolation and energy dissipation device according to the present invention;
in the above figures:
1 a base plate;
2 horizontal damping unit; 201 a first housing; 202 a first piezoelectric ceramic; 203 a first spring; 204 a first coil; 205 a rubber layer;
3, a vertical vibration damping unit; 301 a second housing; 302 a second piezoelectric ceramic; 303 a first electromagnet; 304 a second electromagnet; 305 a disc spring assembly; 306 a second spring; 307 lead screw; 308 a mass block; 309 a limit frame;
4, rubbing the pendulum upper base; 401 a permanent magnet; 5, friction swinging the lower base; 501 third electromagnet.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, a multidimensional vibration isolation and energy dissipation device includes a base plate 1, a horizontal vibration damping unit 2, a vertical vibration damping unit 3, and a friction pendulum assembly; the friction pendulum component comprises a friction pendulum upper base 4 and a friction pendulum lower base 5; the friction pendulum lower base 5 is arranged between the two horizontal vibration reduction units 2, the vertical vibration reduction unit 3 is arranged above the friction pendulum lower base 5, and the friction pendulum upper base 4 is arranged at the bottom of the vertical vibration reduction unit 3; magnets are arranged in the friction pendulum upper base 4 and the friction pendulum lower base 5, and the magnets in the friction pendulum upper base 4 and the magnets in the friction pendulum lower base 5 repel each other.
The multidimensional vibration isolation and energy dissipation device adopts the combination of the horizontal vibration attenuation unit 2, the vertical vibration attenuation unit 3 and the friction pendulum assembly to eliminate the vibration from the horizontal direction and the vertical direction, and the vibration resistance of the device is further improved by adopting the friction pendulum assembly. The friction pendulum support has the following advantages: 1. the shock insulation effect similar to that of a rubber shock insulation support is achieved, and the vertical bearing capacity and the horizontal deformation capacity are higher; 2. the self-oscillation period of the friction pendulum support is stable, and the sliding surface of the support is made of special metal and high-molecular wear-resistant materials and has the characteristics of low friction coefficient and high damping; 3. the friction pendulum support has better self-resetting capability, and the mass center is superposed with the rigidity center; eliminating the torsion influence of the structure caused by the eccentricity of the mass center and the rigid center; 4. the friction pendulum support has the advantages of good durability, high temperature resistance and small influence of ambient temperature on mechanical properties. Further, the horizontal vibration damping unit 2 comprises a first casing 201, and the first casing 201 comprises a first side plate, and a left end plate and a right end plate which are arranged at the left end and the right end of the first side plate; the first side plate is made of deformable materials; the first side plate is preferably made of rubber. The inner surfaces of the left end plate and the right end plate are respectively provided with first piezoelectric ceramics 202, and a first spring 203 is arranged between the first piezoelectric ceramics 202 of the left end plate and the first piezoelectric ceramics 202 of the right end plate; a first coil 204 is wound outside the first side plate, and the first coil 204 and the first piezoceramic 202 form a closed loop; the first shell 201 is filled with magnetorheological fluid. Further, the outer surfaces of the left end plate and the right end plate are respectively provided with a rubber layer 205.
The principle of horizontal vibration reduction is as follows: when the structure is subjected to transverse vibration from the horizontal direction, the rubber layer 205 is stressed and deformed to isolate a part of vibration energy, the first spring 203 is stressed and deformed, the first piezoelectric ceramic 202 is stressed and deformed to generate current, the current is arranged in the first coil 204, the first coil 204 generates a magnetic field, the magnetorheological fluid is influenced by the magnetic field, the viscosity is increased, and the energy consumption of the magnetorheological fluid in the horizontal direction is increased.
Further, the vertical vibration damping unit 3 includes a second housing 301, the second housing 301 includes a second side plate, and an upper end plate and a lower end plate disposed at upper and lower ends of the second side plate, the inner surfaces of the upper end plate and the lower end plate are respectively provided with a second piezoelectric ceramic 302, the center of the lower surface of the upper end plate is provided with a first electromagnet 303, the center of the upper surface of the lower end plate is provided with a second electromagnet 304, the first electromagnet 303 and the second electromagnet 304 respectively form a closed loop with the second piezoelectric ceramic 302, and the polarities of the two opposite poles of the first electromagnet 303 and the second electromagnet 304 after being energized are opposite; magnetorheological fluid is filled in the second shell 301; the second side plate is made of deformable materials; preferably the second side plate is made of rubber.
Further, two sets of disc spring assemblies 305 arranged left and right are arranged between the upper end plate and the lower end plate, and each set of disc spring assembly 305 is formed by overlapping a plurality of disc springs; the outer sides of the two sets of disc spring assemblies 305 are respectively provided with a second spring 306, the upper end of each second spring 306 is connected with the upper end plate, and the lower end of each second spring 306 is connected with the lower end plate. The lower surface of the upper end plate is fixedly connected with a lead screw 307, a through hole is formed in the center of the lower end plate, the lower end of the lead screw 307 penetrates through the through hole of the lower end plate, a mass block 308 is sleeved on the lead screw 307, a limiting frame 309 is arranged outside the mass block 308, the top of the limiting frame 309 is connected with the upper end plate, and the bottom of the limiting frame 309 is connected with the lower end plate. The lead screw 307 is wound with a second coil 3010. The material connecting the limiting frame 309 and the upper end plate and the lower end plate is a deformable material.
The principle of vertical vibration reduction is as follows: when the structure is subjected to vertical vibration, the second piezoelectric ceramics 302 is pressed and deformed to generate current which is respectively supplied to the first electromagnet 303 and the second electromagnet 304, a vertical magnetic field is formed in the second shell 301, and magnetorheological fluid in the second shell 301 becomes viscous, so that energy consumption is increased. Furthermore, two groups of disc spring assemblies 305 are arranged between the upper end plate and the lower end plate on the left and right, second springs 306 are respectively arranged on the outer sides of the two groups of disc spring assemblies 305, and the disc spring assemblies 305 and the second springs 306 form a vibration isolation system with positive and negative stiffness springs connected in parallel, so that the reduction of the motion stiffness of the system is realized on the premise of ensuring the positive stiffness of the system, the inherent frequency of the system is reduced, and the vibration isolation performance is improved. In addition, a lead screw 307 is arranged between the upper end plate and the lower end plate, a mass block 308 is arranged on the lead screw 307, when the upper end plate and the lower end plate are close to or far away from each other, the lead screw 307 moves to limit the linear motion of the mass block 308 along the lead screw 307, the mass block 308 can rotate, the mass block 308 rotates to cut magnetic induction lines of the first electromagnet 303, the second electromagnet 304 and the second coil 3010, an eddy current effect is generated, the magnetorheological fluid is heated, the viscosity of the magnetorheological fluid is further improved, and the vibration reduction performance is improved.
Further, an upper cavity is arranged in the upper base 4 of the friction pendulum, a permanent magnet 401 is vertically arranged in the upper cavity, a lower cavity is arranged in the lower base 5 of the friction pendulum, a third electromagnet 501 is vertically arranged in the lower cavity, and the lower end of the permanent magnet 401 and the upper end of the third electromagnet 501 have the same magnetic pole when being electrified. The vibration control switch is fixedly connected to the upper end plate or the lower end plate, the vibration control switch is connected in series with a power supply loop of the third electromagnet 501, and the vibration control switch is used for switching on the loop of the third electromagnet 501 when vertical vibration is detected to be larger than a set threshold value.
In the above embodiment, the permanent magnet 401 is disposed in the friction pendulum upper base 4, the third electromagnet 501 is disposed in the friction pendulum lower base 5, the vibration control switch is disposed on the upper end plate or the lower end plate, when the vibration exceeds a set threshold, the vibration control switch turns on the loop of the third electromagnet 501, and the third electromagnet 501 and the permanent magnet 401 repel each other, so that the friction pendulum upper base 4 and the friction pendulum lower base 5 are in a floating state.
Further, the first spring 203, the second spring 306 and the disc spring are made of memory alloy materials. When the temperature rises, a temperature memory effect is generated, thereby increasing energy consumption.
Further, the first side plate and the second side plate are made of rubber. The material of the first side plate and the second side plate is preferably rubber so as to adapt to the deformation of the first side plate and the second side plate.
Compared with the prior vibration isolation support, the multidimensional vibration isolation energy dissipation device has the advantages that: (1) vibration isolation and energy consumption in two dimensions of horizontal and vertical can be realized, the working frequency range of the vibration isolation device is expanded, and the vibration attenuation effect is greatly improved; (2) the vibration isolation system with the positive and negative stiffness spring elements connected in parallel is formed by utilizing the negative stiffness characteristic of the disc spring assembly under a certain condition, so that the bearing capacity of the whole structure is increased, and low-frequency vibration isolation can be realized; (3) the vibration isolation efficiency of the device under large vibration is further enhanced by utilizing the magnetic suspension vibration isolation technology.
Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed.
Claims (10)
1. A multidimensional magnetic suspension vibration isolation energy dissipation device is characterized by comprising a base plate (1), a horizontal vibration reduction unit (2), a vertical vibration reduction unit (3) and a friction pendulum assembly; the friction pendulum component comprises a friction pendulum upper base (4) and a friction pendulum lower base (5); the friction pendulum lower base (5) is arranged between the two horizontal vibration reduction units (2), the vertical vibration reduction unit (3) is arranged above the friction pendulum lower base (5), and the friction pendulum upper base (4) is arranged at the bottom of the vertical vibration reduction unit (3); magnets are arranged in the friction pendulum upper base (4) and the friction pendulum lower base (5), and the magnets in the friction pendulum upper base (4) and the magnets in the friction pendulum lower base (5) repel each other.
2. The multidimensional magnetic levitation vibration isolation and energy dissipation device according to claim 1, wherein the horizontal damping unit (2) comprises a first housing (201), and the first housing (201) comprises a first side plate and left and right end plates disposed at left and right ends of the first side plate; the first side plate is made of deformable materials; the inner surfaces of the left end plate and the right end plate are respectively provided with first piezoelectric ceramics (202), and a first spring (203) is arranged between the first piezoelectric ceramics (202) of the left end plate and the first piezoelectric ceramics (202) of the right end plate; a first coil (204) is wound outside the first side plate, and the first coil (204) and the first piezoelectric ceramic (202) form a closed loop; magnetorheological fluid is filled in the first shell (201).
3. The multidimensional magnetic levitation vibration isolation and energy dissipation device as recited in claim 2, wherein the outer surfaces of the left end plate and the right end plate are respectively provided with a rubber layer (205).
4. The multidimensional magnetic suspension vibration isolation and energy dissipation device of claim 1, wherein the vertical vibration reduction unit (3) comprises a second shell (301), the second shell (301) comprises a second side plate and an upper end plate and a lower end plate which are arranged at the upper end and the lower end of the second side plate, the inner surfaces of the upper end plate and the lower end plate are respectively provided with a second piezoelectric ceramic (302), the center of the lower surface of the upper end plate is provided with a first electromagnet (303), the center of the upper surface of the lower end plate is provided with a second electromagnet (304), the first electromagnet (303) and the second electromagnet (304) respectively form a closed loop with the second piezoelectric ceramic (302), and the polarities of two opposite poles of the first electromagnet (303) and the second electromagnet (304) are opposite after being electrified; magnetorheological fluid is filled in the second shell (301); the second side plate is made of deformable materials.
5. The multidimensional magnetic suspension vibration isolation and energy dissipation device of claim 4, wherein two sets of disc spring assemblies (305) are arranged left and right between the upper end plate and the lower end plate, and each set of disc spring assemblies (305) is formed by stacking a plurality of disc springs; the outer sides of the two groups of disc spring assemblies (305) are respectively provided with a second spring (306), the upper end of each second spring (306) is connected with the upper end plate, and the lower end of each second spring (306) is connected with the lower end plate.
6. The multidimensional magnetic suspension vibration isolation and energy dissipation device of claim 5, wherein a lead screw (307) is fixedly connected to the lower surface of the upper end plate, a through hole is formed in the center of the lower end plate, the lower end of the lead screw (307) penetrates through the lower end plate from the through hole, a mass block (308) is sleeved on the lead screw (307), a limiting frame (309) is arranged outside the mass block (308), the top of the limiting frame (309) is connected with the upper end plate, and the bottom of the limiting frame (309) is connected with the lower end plate; a second coil (3010) is wound around the lead screw (307).
7. The multidimensional magnetic suspension vibration isolation and energy dissipation device according to claim 1, wherein an upper cavity is arranged in the upper base (4) of the friction pendulum, a permanent magnet (401) is vertically arranged in the upper cavity, a lower cavity is arranged in the lower base (5) of the friction pendulum, a third electromagnet (501) is vertically arranged in the lower cavity, and the lower end of the permanent magnet (401) and the upper end of the third electromagnet (501) have the same magnetic pole when being electrified.
8. The multidimensional magnetic suspension vibration isolation and energy dissipation device of claim 7, further comprising a vibration control switch, wherein the vibration control switch is fixedly connected to the upper end plate or the lower end plate, the vibration control switch is connected in series with a power supply loop of the third electromagnet (501), and the vibration control switch is used for switching on the loop of the third electromagnet (501) when vertical vibration is detected to be greater than a set threshold value.
9. The multidimensional magnetic levitation vibration isolation and energy dissipation device as recited in claim 2 or 5, wherein the first spring (203), the second spring (306) and the disc spring are made of memory alloy materials.
10. The multidimensional magnetic levitation vibration isolation and energy dissipation device as recited in claim 2 or 4, wherein the material of the first side plate and the second side plate is rubber.
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| CN202111049216.3A CN113803400A (en) | 2021-09-08 | 2021-09-08 | A multi-dimensional magnetic suspension vibration isolation energy dissipation device |
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| CN202111049216.3A CN113803400A (en) | 2021-09-08 | 2021-09-08 | A multi-dimensional magnetic suspension vibration isolation energy dissipation device |
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Application publication date: 20211217 |