Multi-dimensional vibration isolation support and mounting method thereof

Abstract

The invention belongs to the technical field of vibration isolation, and particularly discloses a multi-dimensional vibration isolation support and an installation method thereof.The vibration isolation support comprises a first connecting plate and a second connecting plate, the first connecting plate is oppositely located above the second connecting plate at intervals, and an energy consumption device used for consuming horizontal vibration energy and / or vertical vibration energy is arranged between the first connecting plate and the second connecting plate; the quasi-zero stiffness vibration isolation systems are located on the two sides or the periphery of the magneto-rheological damper, the piston and the annular permanent magnet are located on the upper portion of the magneto-rheological damper, and the fixing pieces are distributed on the two sides or the periphery of the piston. The fixing pieces are connected with movable baffles of the quasi-zero stiffness vibration isolation systems through transmission pieces. The vibration isolation support provided by the invention can consume vibration energy in multiple dimensions in the horizontal direction and / or the vertical direction, and has a self-resetting function, so that the vibration resistance, stability, safety and comfort of a building can be improved, and the vibration isolation support is relatively simple and convenient to mount and convenient to popularize.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration isolation, and in particular relates to a multi-dimensional vibration isolation support and a mounting method thereof. Background Art

[0002] With the advancement of urbanization, the structural safety and comfort of buildings are also facing many challenges. Among them, the impact of external vibration on buildings is particularly significant. This requires that buildings must have good vibration resistance during construction to ensure that they will not be damaged or collapsed when subjected to a certain degree of vibration.

[0003] At present, the most effective way is to set up vibration isolation bearings between the building and the foundation to achieve a soft connection with the ground. In this way, when vibration occurs, the vibration energy of the lower foundation is first transmitted to the vibration isolation bearings, which then extend the natural vibration period of the upper structure and reduce the vibration response of the upper structure, effectively avoiding or reducing the transmission of vibration energy caused by vibration to the upper part, thereby protecting the upper structure and its appendages.

[0004] However, most of the existing vibration isolation bearings can only provide vibration isolation effects in a single direction, which makes it difficult to meet the needs of buildings for multi-dimensional vibration isolation in complex external vibration environments. In actual applications, buildings may be subject to vibrations from different directions, such as horizontal seismic waves, wind loads, and vertical machine vibrations. Traditional single-dimensional vibration isolation bearings are often unable to effectively reduce the vibration response of the superstructure when facing multi-dimensional vibrations, which may cause the building to still be affected by greater vibrations in certain directions, reducing the structural safety and comfort of the building. In addition, the installation process of some vibration isolation bearings is relatively complicated, requiring professional technicians and special installation equipment, which increases construction costs and time. At the same time, the durability and reliability of some vibration isolation bearings need to be improved, and their performance may degrade during long-term use, affecting their vibration isolation effects.

[0005] In view of this, this invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a multi-dimensional vibration isolation bearing and its installation method, which are mainly used to solve the problems that most existing vibration isolation bearings can only isolate vibration in a single direction, and that some multi-dimensional vibration isolation bearings have cumbersome installation procedures and / or complex structures.

[0007] The purpose of the present invention is to be solved by the following technical solutions:

[0008] In a first aspect, the present invention provides a multi-dimensional vibration isolation support, comprising a first connecting plate connected to an upper structure and a second connecting plate connected to a lower structure, wherein the first connecting plate is spaced and relatively located above the second connecting plate, and an energy dissipation device for consuming horizontal vibration energy and / or vertical vibration energy is provided between the first connecting plate and the second connecting plate;

[0009] The energy dissipation device includes a piston fixed to the bottom of the first connecting plate, 2N (N is a positive integer) fixing parts symmetrically arranged on the periphery of the piston and arranged in the vertical direction, a magnetorheological damper arranged on the second connecting plate, and multiple sets of quasi-zero stiffness vibration isolation systems symmetrically arranged on the periphery of the magnetorheological damper and corresponding to the number and position of the fixing parts. The top of the magnetorheological damper is provided with an opening that only allows the piston to move in the vertical direction and extend into the interior thereof. Each set of the quasi-zero stiffness vibration isolation system is provided with a movable baffle that moves in the horizontal direction on the side close to the magnetorheological damper, and the movable baffle is connected to the fixing part through a transmission part.

[0010] Furthermore, the magnetorheological damper includes a container and a magnetorheological fluid filled in the container, and the magnetorheological fluid is used to adjust the damping force according to the magnetic force condition.

[0011] Furthermore, a position-limiting sealing connector is provided at the top opening of the container, and the position-limiting sealing connector is used to ensure that the piston and the container do not move relative to each other in the horizontal direction.

[0012] Furthermore, the energy dissipation device also includes an annular permanent magnet located directly above the container, and the annular permanent magnet is arranged in the circumference of the piston and fixedly connected to the bottom of the first connecting plate.

[0013] Furthermore, the energy dissipation device also includes a plurality of boxes containing liquid arranged at the bottom of the first connecting plate, and the plurality of boxes are symmetrically distributed with the piston as the center, and are used for tuning the magnetorheological damper.

[0014] Furthermore, a friction plate is provided on the second connecting plate, and the magnetorheological damper and the movable baffle are both placed on the friction surface on the top of the friction plate.

[0015] Furthermore, in a natural state, the piston is coaxial with the magnetorheological damper, and the fixing part, the quasi-zero stiffness vibration isolation system, the transmission part and the box are symmetrically arranged on both sides or around the magnetorheological damper.

[0016] Furthermore, the quasi-zero stiffness vibration isolation system includes a supporting plate matched with the movable baffle, the supporting plate is composed of a horizontal portion and a vertical portion connected, the vertical portion is fixedly connected to the second connecting plate, the bottom surface of the horizontal portion is provided with a slide groove along the horizontal direction, and the top end of the movable baffle is embedded in the slide groove;

[0017] Among them, a first permanent magnet is installed on the inner wall of the vertical part, an excitation coil is wound on the circumference of the first permanent magnet, and a second permanent magnet is installed on the side of the movable baffle close to the vertical part, and the magnetic properties of the second permanent magnet are opposite to those of the first permanent magnet; at the same time, the vertical part and the movable baffle are connected through a connecting reset component with a reset function.

[0018] Furthermore, the connection reset component with reset function includes a horizontally arranged negative Poisson's ratio honeycomb connector, one end of the negative Poisson's ratio honeycomb connector is connected to the vertical part, and the other end is connected to the movable baffle. The material of the negative Poisson's ratio honeycomb connector is a shape memory alloy with self-reset function, and a resistance wire is wound on the negative Poisson's ratio honeycomb connector.

[0019] In a second aspect, the present invention provides an installation method based on the above-mentioned multi-dimensional vibration isolation support, comprising the following steps:

[0020] Step 1: fix the second connecting plate to the top of the lower structure, arrange the friction plate on the second connecting plate, place the magnetorheological damper of the energy dissipation device in the middle of the friction plate, and symmetrically arrange the quasi-zero stiffness vibration isolation system of the energy dissipation device on the periphery of the magnetorheological damper;

[0021] Step 2: fix the piston, annular permanent magnet and box of the energy dissipation device to the bottom of the first connecting plate, and arrange fixings corresponding to the number and position of the quasi-zero stiffness vibration isolation system on the periphery of the piston;

[0022] Step three, insert the piston into the magnetorheological damper and connect it through the limit sealing connector of the energy dissipation device, and then connect the fixing part to the movable baffle provided on the side of the quasi-zero stiffness vibration isolation system close to the magnetorheological damper through the transmission part.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The multi-dimensional vibration isolation support provided by the present invention is mainly composed of a first connecting plate, a second connecting plate and an energy dissipation device arranged therebetween, wherein the energy dissipation device mainly cooperates with a piston, an annular permanent magnet and a magnetorheological damper having a magnetorheological fluid to effectively consume the vibration energy in the vertical direction; and / or the quasi-zero stiffness vibration isolation system consumes the horizontal vibration energy by moving horizontally on the friction plate in cooperation with a transmission part, a fixing part, a piston and a magnetorheological damper, and the quasi-zero stiffness vibration isolation system has a self-resetting ability, which can reduce the residual deformation after the vibration ends, ensuring that it can still work well during the next vibration; in addition, the box carrying the liquid plays the role of tuning the liquid magnetorheological damper in the vibration isolation, which can reduce the vibration of the upper structure, thereby realizing the effective consumption of the multi-dimensional vibration energy of the building, improving the vibration resistance and stability of the building, and providing a strong guarantee for the structural safety and comfort of use of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the multi-dimensional vibration isolation support of the present invention.

[0028] in:

[0029] 1 is a first connecting plate;

[0030] 2 is a second connecting plate;

[0031] 3 is an energy dissipation device; 31 is a piston; 32 is a fixing member; 33 is a magnetorheological damper; 34 is a quasi-zero stiffness vibration isolation system; 35 is a transmission member; 36 is a limit seal connector; 37 is an annular permanent magnet; 38 is a box; 39 is a friction plate; 331 is a container; 332 is a magnetorheological fluid; 341 is a movable baffle; 342 is a supporting plate; 343 is a first permanent magnet; 344 is an excitation coil; 345 is a second permanent magnet; 346 is a connection reset component. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0034] See also Figure 1 A multi-dimensional vibration isolation support provided by an embodiment of the present invention includes a first connecting plate 1 connected to an upper structure (such as a building structure) and a second connecting plate 2 connected to a lower structure. The first connecting plate 1 is spaced and relatively located above the second connecting plate 2, and an energy dissipation device 3 for consuming horizontal vibration energy and / or vertical vibration energy is arranged between the two. The energy dissipation device 3 is the core part of the entire multi-dimensional vibration isolation support. When designing, a variety of complex vibration conditions are comprehensively considered. For example, whether it is vibration energy from the horizontal direction such as the horizontal component of earthquake waves, the horizontal force of wind loads, or energy from the vertical direction such as vertical vibration caused by machine operation, other vertical impacts, etc., the energy dissipation device 3 can effectively consume energy, thereby greatly reducing the impact of these vibrations on the building, and ensuring the structural safety and comfort of the building in a complex vibration environment.

[0035] In an embodiment of the present invention, the energy dissipation device 3 includes a piston 31 and a fixing member 32 fixed to the bottom of the first connecting plate 1. The piston 31 is located in the middle of the first connecting plate 1 and is vertically arranged. The number of the fixing members 32 is 2N (N is a positive integer) and is symmetrically arranged around the periphery of the piston 31 and arranged in the vertical direction. At the same time, a magnetorheological damper 33 and a quasi-zero stiffness vibration isolation system 34 are arranged on the second connecting plate 2. The magnetorheological damper 33 is located directly below the piston 31, and an opening is opened on the top of the magnetorheological damper 33 for the piston 31 to move in the vertical direction and to extend into the interior thereof. The number and position of the quasi-zero stiffness vibration isolation system 34 correspond one-to-one to the fixing member 32. Each set of quasi-zero stiffness vibration isolation system 34 is provided with a movable baffle 341 that moves in the horizontal direction on the side close to the magnetorheological damper 33. The movable baffle 341 is connected to the fixing member 32 through a transmission member 35. One end of the transmission member 35 is hinged to the movable baffle 341, and the other end is hinged to the fixing member 32 to ensure that when the fixing member 32 moves vertically, the movable baffle 341 does not move in the vertical direction. At the same time, when the movable baffle 341 moves horizontally, it can push the fixing member 32, the first connecting plate 1, the piston 31 and the magnetorheological damper 33 to move as a whole.

[0036] Specifically, the magnetorheological damper 33 is composed of a cylindrical container 331 and a magnetorheological fluid 332 filled in the container 331. Among them, the top of the container 331 is provided with an opening for the piston 31 to extend into the interior thereof, and a limited sealing connector 36 is provided at the opening, and the limited sealing connector 36 is used to ensure that the piston 31 and the container 331 can only move relative to each other in the vertical direction, and the two form a whole in the horizontal direction without relative displacement; the magnetorheological fluid 332 can show different physical properties as the magnetic field changes. When the magnetic field is weak, its viscosity is low, similar to Newtonian fluid. As the magnetic field increases, the magnetic particles inside will be magnetized to form a chain or columnar structure in the direction of the magnetic field, the viscosity increases, the stiffness increases, and the properties similar to those of a solid are presented, that is, by changing the strength of the magnetic field, the stiffness and damping force of the magnetorheological fluid can be adjusted to achieve effective vibration isolation.

[0037] In the embodiment of the present invention, the energy dissipation device 3 further includes an annular permanent magnet 37 located directly above the container 331, and the annular permanent magnet 37 is arranged in the circumference of the piston 31 and fixedly connected to the bottom of the first connecting plate 1. Through the above arrangement, when subjected to vertical vibration, the piston 31 will reciprocate in the vertical direction, and at this time, the distance between the annular permanent magnet 37 and the magnetorheological damper 33 will change, and this change will cause the viscosity of the magnetorheological fluid 332 in the container 331 to change with the magnetic field strength, so that the magnetorheological fluid 332 can adjust the damping force according to the magnetic force state, thereby consuming the vibration energy in the vertical direction.

[0038] Furthermore, in the embodiment of the present invention, the energy dissipation device 3 also includes a plurality of boxes 38 fixedly arranged on the bottom edge of the first connecting plate 1, and the boxes 38 may contain some non-flammable liquid, such as water. The plurality of boxes 38 are symmetrically distributed with the piston 31 as the center, and are used to tune the magnetorheological damper 33 and participate in energy dissipation.

[0039] In the embodiment of the present invention, a friction plate 39 is provided on the second connecting plate 2, and the magnetorheological damper 33 and the movable baffle 341 of the quasi-zero stiffness vibration isolation system 34 are both placed on the friction surface at the top of the friction plate 39. When encountering horizontal vibration, the magnetorheological damper 33 and the movable baffle 341 will produce relative movement with the friction plate 39, and a part of the horizontal vibration energy can be consumed through this friction, thereby further enhancing the vibration isolation effect of the multi-dimensional vibration isolation support in the horizontal direction.

[0040] It is particularly important to explain that, in the embodiment of the present invention, the quasi-zero stiffness vibration isolation system 34 not only participates in consuming vibration energy, but also has a self-resetting function. Specifically, the quasi-zero stiffness vibration isolation system 34 includes a supporting plate 342 that cooperates with a movable baffle 341, and the supporting plate 342 is a structure formed by connecting a horizontal portion and a vertical portion, wherein the vertical portion is fixedly connected to the edge of the second connecting plate 2, and this fixing method provides stable support for the entire system; the bottom surface of the horizontal portion is provided with a slide groove along the horizontal direction, and the top end of the movable baffle 341 is embedded in the slide groove, so that the movable baffle 341 can move in the horizontal direction, thereby realizing its function in horizontal vibration isolation.

[0041] Furthermore, a first permanent magnet 343 is installed on the inner side wall of the vertical portion of the supporting carrier plate 342, and an excitation coil 344 is wound around the circumference of the first permanent magnet 343. At the same time, a second permanent magnet 345 is installed on the side of the movable baffle 341 close to the vertical portion, and the second permanent magnet 345 has opposite magnetic properties to the first permanent magnet 343. At the same time, the vertical portion and the movable baffle 341 are connected through a connection reset component 346 with a reset function.

[0042] Among them, the connection reset component 346 adopts a negative Poisson's ratio honeycomb structure. When this structure is pulled, the lateral dimension will expand. This characteristic enables it to effectively absorb energy and reduce vibration. Specifically, the connection reset component 346 is composed of a horizontally arranged negative Poisson's ratio honeycomb connector, one end of which is connected to the vertical part, and the other end is connected to the movable baffle 341. The material of the negative Poisson's ratio honeycomb connector is a shape memory alloy with a self-reset function, and a resistance wire is wound on its surface. When the permanent magnet approaches the excitation coil 344, according to the principle of electromagnetic induction, an induced current will be generated in the coil. This induced current will cause the resistance wire to generate heat. Since the shape memory alloy is sensitive to temperature, the heat generated by the resistance wire will increase the temperature of the shape memory alloy, thereby generating a temperature change effect, so that the connection reset component 346 has a certain self-reset ability, ensuring that the quasi-zero stiffness vibration isolation system 34 can be restored to the initial state after the vibration ends, and prepare for the next vibration isolation.

[0043] The multi-dimensional vibration isolation support provided by the present invention presents a symmetrical and stable layout in a natural state. Among them, the piston 31 and the magnetorheological damper 33 are in a coaxial state, ensuring that the force transmission in the vertical direction is more direct and efficient. At the same time, the fixing part 32, the quasi-zero stiffness vibration isolation system 34, the transmission part 35 and the box 38 are all arranged in a symmetrical manner on both sides or around the magnetorheological damper 33. When external vibration acts on the vibration isolation support, the symmetrically distributed components can work together to consume vibration energy from different directions, minimize the impact on the superstructure, and provide all-round protection for the building.

[0044] The installation process of the multi-dimensional vibration isolation support of the embodiment of the present invention is as follows:

[0045] 1) The second connecting plate 2 is fixed to the top of the lower structure, and a friction plate 39 is arranged on the second connecting plate 2, and then the magnetorheological damper 33 of the energy dissipation device 3 is placed in the middle of the friction plate 39, and the quasi-zero stiffness vibration isolation system 34 is symmetrically arranged on both sides or around the magnetorheological damper 33. Specifically, the supporting plate 342 is fixedly installed on the second connecting plate 2, and the top of the movable baffle 341 is installed in the horizontal slide groove of the supporting plate 342, and the bottom is frictionally connected with the friction plate 39;

[0046] 2) The piston 31, the annular permanent magnet 37 and the box 38 of the energy dissipation device 3 are fixed to the bottom of the first connecting plate 1 according to the above distribution positions, and fixing parts 32 corresponding to the number and position of the quasi-zero stiffness vibration isolation system 34 are arranged on the periphery of the piston 31;

[0047] 3) The piston 31 is inserted into the magnetorheological damper 33 and connected through the limiting sealing connector 36 of the energy dissipation device 3, and the fixing member 32 is connected to the movable baffle 341 provided on the side of the quasi-zero stiffness vibration isolation system 34 close to the magnetorheological damper 33 through the transmission member 35.

[0048] The working principle of the multi-dimensional vibration isolation support provided by the present invention is as follows:

[0049] When multi-directional vibrations are transmitted from the upper structure, in the horizontal direction, for the energy dissipation device 3, since the piston 31 and the container 331 of the magnetorheological damper 33 are connected by a limit seal connector 36, which is used to prevent the piston 31 and the magnetorheological damper 33 from generating horizontal displacement, and the magnetorheological damper 33 is arranged on the friction plate 39, the whole formed by the piston 31 and the magnetorheological damper 33 will move horizontally on the friction plate 39 and consume energy through friction. In addition, for the quasi-zero stiffness vibration isolation system 34 in the energy dissipation device 3, the movable baffle 341 is connected to the fixed member 32 through the transmission member 35, and the transmission member 35 will drive the movable baffle 341 to move in the horizontal direction, thereby causing the distance between the first permanent magnet 343 and the second permanent magnet 345 to change, and the connection reset component 346 is deformed in the horizontal direction, and the quasi-zero stiffness vibration isolation system 34 formed by the two in parallel participates in energy consumption. At the same time, a plurality of boxes 38 containing liquid suspended on the edge of the first connecting plate 1 play the role of tuning the liquid magnetorheological damper 33 and participate in energy consumption, thereby reducing the vibration of the upper structure in the horizontal direction and protecting the building.

[0050] In the vertical direction, for the magnetorheological damper 33, the piston 31 will reciprocate along the vertical direction, squeezing the magnetorheological fluid 332 in the container 331 to consume energy. At the same time, the distance between the annular permanent magnet 37 and the container 331 changes, and the viscosity of the magnetorheological fluid 332 in the container 331 changes with the change of the magnetic field intensity, and its stiffness changes. Specifically, when the upper structure vibrates downward, the distance between the annular permanent magnet 37 and the container 331 decreases. At this time, the viscosity of the magnetorheological fluid 332 in the container 331 increases, the stiffness increases, and the damping force increases; when the upper structure vibrates upward, the magnetorheological fluid 332 gradually returns to its original state. In this process, the magnetorheological fluid 332 mainly participates in energy consumption. In addition, for the quasi-zero stiffness vibration isolation system 34, the transmission member 35 will drive the movable baffle 341 to move in the horizontal direction. At this time, the quasi-zero stiffness systems on both sides move in opposite directions and both participate in energy consumption. At the same time, the water tank 15 also plays the role of a tuned liquid damper and participates in energy consumption.

[0051] In addition, when the vibration ends, the connection reset component 346 made of shape memory alloy material has self-reset capability, which can reduce residual deformation after the vibration ends and ensure that it can still work well during the next vibration.

[0052] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0053] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A multi-dimensional vibration isolation support, characterized in that: The invention comprises a first connecting plate (1) connected to an upper structure and a second connecting plate (2) connected to a lower structure, wherein the first connecting plate (1) is spaced apart and relatively located above the second connecting plate (2), and an energy dissipation device (3) for consuming horizontal vibration energy and / or vertical vibration energy is provided between the first connecting plate (1) and the second connecting plate (2); The energy dissipation device (3) comprises a piston (31) fixed to the bottom of the first connecting plate (1), 2N (N is a positive integer) fixing members (32) symmetrically arranged on the periphery of the piston (31) and arranged in the vertical direction, a magnetorheological damper (33) arranged on the second connecting plate (2), and a plurality of quasi-zero stiffness vibration isolation systems (34) symmetrically arranged on the periphery of the magnetorheological damper (33) and corresponding in number and position to the fixing members (32), wherein the top of the magnetorheological damper (33) is provided with an opening only for the piston (31) to move in the vertical direction and extend into the interior thereof, and each set of the quasi-zero stiffness vibration isolation system (34) is provided with a movable baffle (341) movable in the horizontal direction on a side close to the magnetorheological damper (33), and the movable baffle (341) is connected to the fixing member (32) via a transmission member (35).

2. The multi-dimensional vibration isolation support according to claim 1, characterized in that: The magnetorheological damper (33) comprises a container (331) and a magnetorheological fluid (332) filled in the container (331), wherein the magnetorheological fluid (332) is used to adjust the damping force according to the magnetic force condition.

3. The multi-dimensional vibration isolation support according to claim 2, characterized in that: A position-limiting sealing connection piece (36) is provided at the top opening of the container (331), and the position-limiting sealing connection piece (36) is used to ensure that the piston (31) and the container (331) do not move relative to each other in the horizontal direction.

4. The multi-dimensional vibration isolation support according to claim 2, characterized in that: The energy dissipation device (3) further comprises an annular permanent magnet (37) located directly above the container (331); the annular permanent magnet (37) is arranged in the circumference of the piston (31) and is fixedly connected to the bottom of the first connecting plate (1).

5. The multi-dimensional vibration isolation support according to claim 1, characterized in that: The energy dissipation device (3) further comprises a plurality of boxes (38) containing liquid, which are arranged at the bottom of the first connecting plate (1); the plurality of boxes (38) are symmetrically distributed with the piston (31) as the center, and are used for tuning the magnetorheological damper (33).

6. The multi-dimensional vibration isolation support according to claim 5, characterized in that: A friction plate (39) is provided on the second connecting plate (2), and the magnetorheological damper (33) and the movable baffle (341) are both placed on the friction surface at the top of the friction plate (39).

7. The multi-dimensional vibration isolation support according to claim 6, characterized in that: In a natural state, the piston (31) is coaxial with the magnetorheological damper (33), and the fixing member (32), the quasi-zero stiffness vibration isolation system (34), the transmission member (35) and the box (38) are symmetrically arranged on both sides or around the magnetorheological damper (33).

8. The multi-dimensional vibration isolation support according to any one of claims 1 to 7, characterized in that: The quasi-zero stiffness vibration isolation system (34) comprises a supporting plate (342) matched with a movable baffle (341), the supporting plate (342) being composed of a horizontal portion and a vertical portion connected together, the vertical portion being fixedly connected to the second connecting plate (2), a slide groove being arranged on the bottom surface of the horizontal portion in the horizontal direction, and the top end of the movable baffle (341) being embedded in the slide groove; Among them, a first permanent magnet (343) is installed on the inner wall of the vertical part, an excitation coil (344) is wound on the circumference of the first permanent magnet (343), and a second permanent magnet (345) is installed on the side of the movable baffle (341) close to the vertical part, and the magnetic properties of the second permanent magnet (345) are opposite to those of the first permanent magnet (343); at the same time, the vertical part and the movable baffle (341) are connected through a connection reset component (346) with a reset function.

9. The multi-dimensional vibration isolation support according to claim 8, characterized in that: The connection reset component (346) with a reset function comprises a horizontally arranged negative Poisson's ratio honeycomb connector, one end of which is connected to the vertical portion, and the other end is connected to the movable baffle (341), the material of the negative Poisson's ratio honeycomb connector is a shape memory alloy with a self-reset function, and a resistance wire is wound on the negative Poisson's ratio honeycomb connector.

10. A method for installing a multi-dimensional vibration isolation support according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: fix the second connecting plate (2) to the top of the lower structure, arrange a friction plate (39) on the second connecting plate (2), place the magnetorheological damper (33) of the energy dissipation device (3) in the middle of the friction plate (39), and symmetrically arrange the quasi-zero stiffness vibration isolation system (34) of the energy dissipation device (3) on the periphery of the magnetorheological damper (33); Step 2: The piston (31), the annular permanent magnet (37) and the box (38) of the energy dissipation device (3) are fixed to the bottom of the first connecting plate (1), and fixing parts (32) corresponding in number and position to the quasi-zero stiffness vibration isolation system (34) are arranged on the periphery of the piston (31); Step 3: insert the piston (31) into the magnetorheological damper (33) and connect it through the limiting sealing connector (36) of the energy dissipation device (3), and then connect the fixing member (32) to the movable baffle (341) provided on the side of the quasi-zero stiffness vibration isolation system (34) close to the magnetorheological damper (33) through the transmission member (35).

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