An inertia-capacity multi-dimensional multi-stage vibration reduction and isolation support device and its working method

Abstract

The present invention relates to the technical field of equipment vibration reduction, and provides an inertial multi-dimensional and multi-stage vibration reduction and isolation support device and its working method, comprising an equipment pedestal, an external cylinder, a base, a support column, a cylindrical cavity, a hydraulic vibration reduction column, a spring vibration reduction support, a magnetorheological fluid, an annular piston plate, a tie rod, a curved tube, and a flexible diaphragm. Horizontal vibrations of the equipment are transmitted to the tie rod via the equipment pedestal through the support column. Under horizontal vibration, the tie rod pushes the annular piston plate to squeeze the magnetorheological fluid within the damping cavity. To balance the uneven pressure within the damping cavity, the magnetorheological fluid within each small cavity and the small cavity opposite it circulates through the curved tube, and a spring within the damping cavity can provide damping force. Vertical vibrations of the equipment are transmitted to the cylindrical cavity via the equipment pedestal through the support column, and then from the cylindrical cavity to the hydraulic vibration reduction column and the spring vibration reduction support. The device has a multi-stage vibration reduction and energy dissipation defense line, and can reduce and dissipate vibrations of varying degrees.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment vibration reduction, and in particular to an inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device and a working method thereof. Background Art

[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] With the continuous development of the economy, urbanization is becoming faster and faster, population density is becoming more and more concentrated, urban infrastructure is developing rapidly, subway lines are becoming more and more dense, and there are more and more urban substations. However, due to land resource constraints, planned subway lines will sometimes inevitably pass adjacent to substations or even under substations.

[0004] Environmental vibrations induced by factors such as surrounding construction and subway train operations can adversely impact the normal operation of electrical equipment in substation buildings. In particular, micro-vibrations caused by subway trains can damage precision instruments. Prolonged exposure to vibration can lead to continuous functional degradation, aging, and even premature failure of the equipment, impacting its normal operation. Furthermore, if the natural frequency of electrical equipment is close to the ambient vibration frequency, resonance can occur, amplifying the amplitude several times and causing serious damage. For some precision instruments, in certain special environments, simple vibration isolation pads are insufficient to meet their vibration reduction requirements. Therefore, improvements are needed. Vibration induced by the surrounding environment, such as subways, typically involves both horizontal and vertical vibrations, causing displacement in both directions. Simple vibration isolation pads cannot meet the dual-directional vibration reduction requirements of precision instruments. A vibration reduction device is needed that can simultaneously reduce both vertical and horizontal vibrations, improving the vibration reduction effect and extending the equipment's service life. Summary of the Invention

[0005] In order to address the deficiencies of the prior art, the present invention provides an inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device and a working method thereof, which has a multi-stage vibration reduction and energy dissipation defense line and can reduce vibration and energy consumption of different degrees of vibration.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A first aspect of the present invention provides an inertial capacity multi-dimensional multi-stage vibration reduction and isolation bearing device.

[0008] An inertial capacity multi-dimensional multi-stage vibration isolation support device, comprising an equipment pedestal, an external cylinder, a base, a support column, a cylindrical cavity, a hydraulic vibration reduction column, a spring vibration reduction support, a magnetorheological fluid, an annular piston plate, a tie rod, a curved tube and a flexible diaphragm;

[0009] The interior of the outer cylinder is provided with a plurality of spring vibration damping supports, the spring vibration damping supports and the outer cylinder are fixedly mounted on the base, and one hydraulic vibration damping column is fixedly mounted on each spring vibration damping support, and all the hydraulic vibration damping columns jointly support the cylindrical cavity;

[0010] The cylindrical cavity is divided into an open slideway and a damping cavity by an annular piston plate; the bottom end of the support column contacts the open slideway and can slide along the middle open slideway; the damping cavity contains magnetorheological fluid and a spring, and is equally divided into an even number of independent small cavities by the flexible partition, each small cavity being connected to the small cavity opposite it through a curved tube;

[0011] The annular piston plate is connected to a support column via a tie rod at the location of each small cavity, and the support column supports an equipment pedestal for placing equipment.

[0012] Furthermore, the energized coil is wound around the outside of the curved tube, and all the energized coils are connected to the controller. The controller controls the current in the energized coil according to the horizontal vibration amplitude of the equipment base, so that the fluidity and viscosity of the magnetorheological fluid in the curved tube change.

[0013] Furthermore, the top of the cylindrical cavity is connected to the outer cylinder through a plurality of evenly distributed damping pistons.

[0014] Furthermore, a through hole is provided at the top of the cylindrical cavity at the portion connected to the push rod of the damping piston, and the push rod of the damping piston is hollow for connecting the magnetorheological fluid in the damping piston cavity and the damping cavity.

[0015] Furthermore, a buffer plate is attached to the side of the equipment base, and a friction layer is attached to the surface of the buffer plate;

[0016] A limit baffle is installed on the upper part of the outer cylinder, and a friction layer is attached to the side of the limit baffle;

[0017] The friction layer on the limit baffle contacts the friction layer on the buffer plate.

[0018] Furthermore, an elastic friction vibration-damping block is attached to the side of the hydraulic vibration-damping column close to the outer cylinder.

[0019] Furthermore, the lower part of the cylindrical cavity is connected to a turret vibration reduction device, which is composed of four fixed plates a, four turret tie rods, two piston tie rods and a piston-damping liquid-liquid chamber shell vibration reduction device;

[0020] The four fixed plates a and the four rotating frame tie rods are cross-connected to form a parallelogram device. The piston-damping liquid-liquid chamber capsule shell vibration reduction device is located at the center of the parallelogram device and is connected to the parallelogram device through two piston tie rods.

[0021] Furthermore, the piston-damping liquid-liquid chamber capsule vibration reduction device includes four fixed plates b and two rotating frame piston plates;

[0022] The four fixed plates b form a square cylinder, and the two rotating frame piston plates are located in the square cylinder, and the sides thereof are in contact with the inner wall of the square cylinder and can slide along the inner wall of the square cylinder.

[0023] Furthermore, the piston-damping fluid-liquid cavity bladder shell vibration reduction device further includes a damping fluid and four elastic liquid cavity bladder shells;

[0024] The four fixed plates b and the two rotating frame piston plates form a rectangular parallelepiped cavity;

[0025] Each elastic liquid chamber shell, the square cylinder and a rotating frame piston plate form a rectangular parallelepiped cavity;

[0026] Each rectangular parallelepiped cavity is filled with the damping fluid.

[0027] A second aspect of the present invention provides a method for operating an inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device as described in the first aspect, comprising the following steps:

[0028] The horizontal vibration of the equipment is transmitted to the tie rod through the equipment base and support columns. Under the horizontal vibration, the tie rod pushes the annular piston plate to squeeze the magnetorheological fluid inside the damping cavity. To balance the uneven pressure in the damping cavity, the magnetorheological fluid in each small cavity and the small cavity opposite it circulates through the curved tube. The spring in the damping cavity can provide damping force.

[0029] The vertical vibration of the equipment is transmitted to the cylindrical cavity through the equipment base and the support column, and then transmitted from the cylindrical cavity to the hydraulic vibration damping column and the spring vibration damping support.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device described in the present invention has a multi-stage vibration reduction and energy dissipation defense line, which can reduce vibration and dissipate energy for vibrations of different degrees.

[0032] 2. The inertia-capacitance multi-dimensional and multi-stage vibration isolation support device described in the present invention utilizes the inertia effect of liquid when flowing in a slender curved tube, and is combined with a piston-type vibration-isolating support to form an "inertia-capacitance-damping" vibration reduction unit to achieve the purpose of efficient energy consumption.

[0033] 3. The inertial capacity multi-dimensional and multi-stage vibration isolation support device described in the present invention utilizes the instantaneous rheological characteristics of magnetorheological fluid and adopts semi-active control technology theory to adjust the viscosity and flow state of the magnetorheological fluid in the slender curved tube in real time according to the structural response state, so that the device has a stable working state.

[0034] 4. The inertia-capacitance multi-dimensional and multi-stage vibration isolation support device described in the present invention involves springs made of shape memory alloy, an intelligent material. When the equipment vibrates, it cooperates with the "inertia-damping" unit to achieve the purpose of multiple vibration reduction. At the same time, the shape memory alloy uses its significant recoverable deformation ability to restore the vibration reduction device to its initial state, ensuring normal operation when it is used next time.

[0035] 5. The inertia-capacitance multi-dimensional and multi-stage vibration isolation support device described in the present invention has an internal cylindrical damping cavity, which can reduce vibration and energy consumption of the equipment in all horizontal directions.

[0036] 6. The inertial capacity multi-dimensional and multi-stage vibration isolation bearing device described in the present invention can be applied to construction equipment in most cases. It can still ensure that the main structure of the device meets the required safety and durability under the action of earthquakes, and can produce better social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0038] Figure 1 A vertical cross-sectional view of the inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device of Example 1 of the present invention;

[0039] Figure 2 A top view of the inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to Example 1 of the present invention;

[0040] Figure 3 is a transverse cross-sectional view of a cylindrical cavity according to Example 1 of the present invention;

[0041] Figure 4 This is a vertical cross-sectional view of the piston-damping liquid-liquid chamber shell vibration reduction device of Example 1 of the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0043] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and should not be understood as limiting the present invention.

[0046] In the present invention, terms such as "fixed connection," "connected," and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations of the present invention.

[0047] In the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0048] Example 1

[0049] like Figure 1 and Figure 2 As shown, embodiment 1 of the present invention provides an inertial capacity multi-dimensional and multi-stage vibration isolation support device, including: an equipment base 2, an external cylinder 3, a base 4, a support column 5, a cylindrical cavity 6, a hydraulic vibration reduction column 7, an equipment fixing plate 8, a spring vibration reduction support 9, a spring 10, an elastic friction vibration reduction block 11, a friction layer 12, a magnetorheological fluid 13, a Ti-Ni shape memory alloy spring 14, an annular piston plate 15, a tie rod 16, an energized coil 17, a curved tube 18, a vibration reduction piston 19, a limit baffle 20, a limit block 21, a fixing plate a22, a rotating frame tie rod 23, a piston tie rod 24, a piston-damping liquid-liquid cavity shell vibration reduction device 25, an elastic liquid cavity shell 26, a damping liquid 27, a rotating frame piston plate 28, a connecting hole 29, a flexible partition 30, a buffer plate 31, and a fixing plate b32.

[0050] The interior of the outer cylinder 3 is composed of a plurality of spring vibration damping supports. The spring vibration damping supports 9 and the outer cylinder 3 are fixedly mounted on the base 4. A hydraulic vibration damping column 7 is fixedly mounted on each spring vibration damping support 9. All hydraulic vibration damping columns 7 jointly support the cylindrical cavity 6.

[0051] The cylindrical cavity 6 is divided into an open slide and a damping cavity by an annular piston plate 15; the bottom end of the support column 5 contacts the open slide and can slide along the middle open slide; the damping cavity contains magnetorheological fluid and a spring, and is equally divided into an even number of independent small cavities by a flexible partition, each small cavity being connected to the small cavity opposite it through a curved tube;

[0052] The annular piston plate 15 is connected to the support column 5 via a tie rod 16 at the location of each small cavity, and the support column 5 supports the equipment base 2 for placing the equipment 1.

[0053] As an embodiment, the base 4 is a rectangular plate.

[0054] As an embodiment, the outer cylinder 3 is a bottomless rectangular parallelepiped with a through hole on the top. The outer cylinder 3 is made of elastic insulating material with a certain rigidity, which can play its vibration reduction function without causing too much deformation, thereby better protecting the internal device.

[0055] The spring vibration damping support 9 is disposed inside the outer cylinder 3. Both the spring vibration damping support 9 and the outer cylinder 3 are fixedly mounted on the base 4. The spring vibration damping support 9 comprises a cylinder, a cover plate, and a plurality of springs 10. The cylinder is a topless and bottomless rectangular parallelepiped or cylindrical. If the cylinder is a rectangular parallelepiped, the cover plate is a rectangular plate; if the cylinder is a cylinder, the cover plate is a circular plate. The side of the cover plate contacts the inner wall of the cylinder, and the cover plate can slide up and down along the inner wall of the cylinder. The bottom of the cylinder is fixedly mounted on the base 4. One end of the spring 10 is fixedly mounted on the base 4, and the other end is fixedly connected to the bottom of the cover plate. When the spring 10 is stretched to its maximum length, the length of the spring 10 plus the thickness of the cover plate is less than the height of the cylinder.

[0056] A hydraulic damping column 7 is fixedly mounted on each spring damping support 9. Specifically, the bottom end of the hydraulic damping column 7 is fixedly mounted on the top of the cover plate.

[0057] All the hydraulic vibration-damping columns 7 jointly support a cylindrical cavity 6 . Specifically, the top ends of all the hydraulic vibration-damping columns 7 are fixedly connected to the bottom end of the cylindrical cavity 6 .

[0058] like Figure 3 As shown, the cylindrical cavity 6 is divided by the annular piston plate 15 into a middle open slideway and damping cavities on both sides. The cylindrical cavity 6 is provided with a support column 5 that can slide on the middle open slideway.

[0059] Specifically, the cylindrical cavity 6 is a cylinder with a through hole in the middle of the top surface; the diameter of the annular piston plate 15 is smaller than the diameter of the cylindrical cavity 6, and the top and bottom ends of the annular piston plate 15 are in close contact with the inner wall of the cylindrical cavity 6; the closed cavity formed by the annular piston plate and the cylindrical cavity 6 is a damping cavity; the vertical cross-section of the support column 5 is an inverted T-shape, the diameter of the lower part of the inverted T-shaped support column 5 is smaller than the diameter of the annular piston plate 15, and larger than the diameter of the through hole opened on the top surface of the cylindrical cavity 6, and the diameter of the upper part of the inverted T-shaped support column 5 is smaller than the diameter of the through hole opened on the top surface of the cylindrical cavity 6; the bottom end of the support column 5 contacts the middle open slide of the cylindrical cavity 6, and it can slide along the middle open slide, the bottom end of the support column 5 is smooth, and the surface of the middle open slide is smooth, which facilitates the annular piston plate 15 and the support column 5 to slide better thereon.

[0060] A limit block 21 is installed around the through hole on the top surface of the cylindrical cavity 6, and a limit block 21 is installed at the upper end of the middle open slideway. The limit block 21 is made of insulating elastic material.

[0061] like Figure 3 As shown, the damping chamber within the cylindrical cavity 6 is filled with magnetorheological fluid 13. The damping chamber is divided into an even number of independent small chambers by flexible partitions 30. Each small chamber is connected to the small chamber opposite it via a curved tube 18. A Ti-Ni shape memory alloy spring 14 is installed within each independent small chamber. The Ti-Ni shape memory alloy spring 14 has a large damping and elastic modulus, providing high damping force and a strong self-recovery function.

[0062] An energized coil 17 is wound around the outside of the curved tube 18 and connected to a controller. The controller controls the current in the energized coil 17 according to the horizontal vibration amplitude of the equipment base 2, so that the fluidity and viscosity of the magnetorheological fluid in the curved tube 18 change.

[0063] As an embodiment, the damping cavity is equally divided into four independent small cavities by the flexible partition 30 .

[0064] The annular piston plate 15 is connected to the support column 5 via a tie rod 16. Specifically, the annular piston plate 15 is connected to the support column 5 via a tie rod 16 at the location of each small cavity, and the tie rods 16 corresponding to the two facing small cavities are in a straight line.

[0065] The top of the cylindrical cavity 6 is connected to the outer cylinder 3 via several evenly distributed damping pistons 19. Specifically, the top of the damping piston 19 is fixedly connected to the inner sidewall of the top of the outer cylinder 3, and the end of the push rod of the damping piston 19 is fixedly connected to the top of the cylindrical cavity 6. A through hole is provided in the top of the cylindrical cavity 6 at the portion connected to the push rod of the damping piston 19. The push rod of the damping piston 19 is hollow and is used to connect the magnetorheological fluid 13 in the damping piston 19 cavity with the damping cavity. A Ti-Ni shape memory alloy spring 14 is provided in the damping piston 19 cavity.

[0066] The support column 5 supports the equipment base 2 for placing the equipment 1. The top of the support column 5 extends out of the through hole opened on the top surface of the cylindrical cavity 6 and the through hole opened on the top of the external cylinder 3 in turn, and is fixedly connected to the bottom of the equipment base 2.

[0067] As an embodiment, the equipment base 2 is a rectangular plate.

[0068] A buffer plate 31 is attached to the side of the equipment base 2. This plate is made of insulating material and has a friction layer 12 on its surface. A limit baffle 20 is mounted on the top of the outer cylinder 3. The friction layer 12 is attached to the side of this baffle 20, which is made of insulating elastic material. The friction layer 12 on this baffle 20 contacts the friction layer 12 on the buffer plate 31.

[0069] The equipment base 2 is provided with an equipment fixing plate 8 for fixing the position of the equipment 1 , and the equipment fixing plate 8 is made of insulating elastic material.

[0070] An elastic friction damping block 11 is attached to the hydraulic damping column 7 on the side close to the outer cylinder 3 , and an elastic friction damping block 11 is attached to the inner side of the lower part of the outer cylinder 3 . The elastic friction damping block 11 is essentially an elastic material with a friction layer 12 wrapped on the surface.

[0071] The lower part of the cylindrical cavity 6 is connected to a turret vibration reduction device, which consists of four fixed plates a22 (first fixed plate a, second fixed plate a, third fixed plate a and fourth fixed plate a), four turret tie rods 23 (first turret tie rod, second turret tie rod, third turret tie rod and fourth turret tie rod), two piston tie rods 24, and a piston-damping liquid-liquid chamber shell vibration reduction device 25. The four fixed plates a and the four rotating frame rods are cross-connected to form a parallelogram device; the piston-damping liquid-liquid chamber shell vibration reduction device is located at the center of the parallelogram device and is connected to the parallelogram device through two piston rods. Specifically: the first fixed plate a22 is fixedly installed at the lower part of the cylindrical cavity 6, the third fixed plate a22 is fixedly installed on the base 4, and the second fixed plate a and the fourth fixed plate a are suspended in the air; one end of the first rotating frame rod is rotatably connected to the first fixed plate a, and the other end is rotatably connected to the second fixed plate a; one end of the second rotating frame rod is rotatably connected to the second fixed plate a, and the other end is rotatably connected to the third fixed plate a; one end of the third rotating frame rod is rotatably connected to the third fixed plate a, and the other end is rotatably connected to the fourth fixed plate a; one end of the fourth rotating frame rod is connected to the fourth fixed plate a, and the other end is connected to the first fixed plate a; the four rotating frame rods are connected into a parallelogram through the fixed plate a.

[0072] One end of the two piston tie rods 24 is fixedly connected to two suspended fixed plates a, and the other end is connected to the piston-damping fluid-liquid cavity sac shell vibration reduction device 25, specifically fixedly connected to the fifth rotating frame piston plate and the sixth rotating frame piston plate of the piston-damping fluid-liquid cavity sac shell vibration reduction device 25.

[0073] like Figure 4 As shown, the piston-damping fluid-fluid chamber bladder vibration reduction device 25 consists of four fixed plates b32, two turret piston plates 28 (a first turret piston plate and a second turret piston plate), damping fluid 27, and four elastic fluid chamber bladders 26 (a first elastic fluid chamber bladder, a second elastic fluid chamber bladder, a third elastic fluid chamber bladder, and a fourth elastic fluid chamber bladder). The four fixed plates b32 form a square cylinder. The two turret piston plates 28 are located within the cylinder, with their sides contacting and sliding along the cylinder's inner wall. The four fixed plates b32 and the two turret piston plates 28 form a rectangular cavity. The elastic fluid chamber bladder is a shell with two rectangular faces. Each elastic fluid chamber bladder 26, together with the cylinder and a turret piston plate, forms a rectangular cavity. Each rectangular cavity is filled with damping fluid 27.

[0074] The two turret piston plates 28 have connecting holes 29 that connect the damping fluid 27 on both sides. The elastic fluid chamber shell 26 is made of corrosion-resistant elastic insulating material. The lower end of the turret vibration damping device is fixed to the base 4 through a fixing plate a22.

[0075] The induction control device is a control circuit composed of an external power supply, a controller, and an inductor (sensor). The inductor is placed on the controlled structure (equipment base 2). The controller is connected to the energized coil 17.

[0076] When no vibration occurs, the center axis of the base 4, the piston-damping liquid-liquid chamber shell vibration reduction device 25, the cylindrical cavity 6, the support column 5 and the equipment base 2 are located in a straight line.

[0077] The working principle of the present invention is as follows: the vibrations generated by the equipment due to environmental vibrations include horizontal vibrations and vertical vibrations. The energy generated by the horizontal vibrations is mainly absorbed by the cylindrical cavity in the device and the elastic limit baffle of the external cylinder; the vertical vibration adopts multi-stage vibration reduction energy consumption, and the energy generated is mainly absorbed by the rotating frame vibration reduction device, the hydraulic vibration reduction column and the first spring vibration reduction support; the first spring support is the first-level vibration reduction defense line, which mainly absorbs the energy generated by small vibrations; the first spring support and the hydraulic vibration reduction column constitute the second-level vibration reduction defense line, which mainly absorbs the energy generated by medium vibrations; the first spring support, the hydraulic vibration reduction column and the rotating frame vibration reduction device constitute the third-level vibration reduction defense line, which mainly absorbs the energy generated by larger vibrations. Horizontal vibrations of the equipment are transmitted from the equipment base via support columns to the tie rods. These horizontal vibrations push the annular piston plates against the magnetorheological fluid within the damping chambers. To balance uneven pressure within the chambers, the magnetorheological fluid within each damping chamber circulates through a curved tube. A sensor transmits the horizontal vibration signal of the equipment base to a controller, which controls the current in the energized coil based on the horizontal vibration amplitude of the equipment base, causing the fluidity and viscosity of the magnetorheological fluid in the curved tubes to change. Furthermore, the Ti-Ni shape memory alloy springs within the damping chambers provide high damping force, further enhancing the device's ability to reduce vibration. To prevent excessive horizontal displacement of the equipment, an elastic limit baffle is installed on the upper portion of the external cylinder to constrain the device's displacement. Vertical vibrations of the equipment are transmitted from the equipment base via support columns to the cylindrical chambers, from which they are transmitted to the hydraulic damping columns and the turret vibration reduction device. A portion of the vibration energy transmitted to the hydraulic damping column is absorbed by the hydraulic damping column's own damping mechanism. The upward and downward vibration of the hydraulic damping column, which stretches and compresses the spring of the piston-type damping support, also absorbs some energy. Simultaneously, the elastic friction damping blocks installed between the hydraulic damping column and the external cylinder will displace with the equipment's upward and downward vibrations, dissipating energy through mutual collision, compression, and friction. On the other hand, when the cylindrical cavity moves downward, the turret tie rod pulls the piston tie rod, causing the turret piston plate to slide outward. The damping fluid within the elastic fluid chamber shell is squeezed, creating a pressure difference on both sides of the piston plate. To balance the uneven pressure within the cavity, the damping fluid needs to enter the other side of the turret piston plate through the connecting hole. This process achieves vertical vibration reduction and energy dissipation for the turret device.

[0078] The present invention aims to reduce the adverse effects of environmental vibrations induced by factors such as surrounding construction and subway train operation on the normal operation of electrical equipment in substation buildings, so as to achieve the purpose of protecting the electrical equipment in substations.

[0079] The present invention is applicable to construction equipment in most situations, can ensure that the main structure of the device meets the required safety and durability under the action of an earthquake, and can produce better social and economic benefits.

[0080] Example 2

[0081] Embodiment 2 of the present invention provides a method for operating an inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device as in embodiment 1, comprising the following steps:

[0082] The horizontal vibration of the device 1 is transmitted to the tie rod 16 via the device base 2 through the support column 5. Under the horizontal vibration, the tie rod 16 pushes the annular piston plate 15 to squeeze the magnetorheological fluid 13 inside the damping cavity. To balance the uneven pressure in the damping cavity, the magnetorheological fluid inside each damping cavity (small cavity) and the damping cavity (small cavity) opposite it circulates through the curved tube 18. The sensor transmits the horizontal vibration signal of the device base 2 to the controller. The controller controls the current in the energized coil 17 according to the horizontal vibration amplitude of the device base 2, causing the fluidity and viscosity of the magnetorheological fluid in the curved tube 18 to change. At the same time, the Ti-Ni shape memory alloy spring 14 in the damping cavity can provide high damping force, further improving the vibration reduction capability of the device. To prevent excessive horizontal displacement of the device, an elastic limit baffle 20 is installed on the upper part of the external cylinder 3 to constrain the displacement amplitude of the device 1.

[0083] The vertical vibration of equipment 1 is transmitted through equipment base 2 via support column 5 to cylindrical cavity 6, and then from cylindrical cavity 6 to hydraulic damping column 7, spring damping support, and turret damping device. The vibration energy transmitted to hydraulic damping column 7 is partially absorbed by its own damping mechanism. The spring of damping piston 19, which stretches and compresses as hydraulic damping column 7 vibrates upward and downward, also absorbs some energy. At the same time, the elastic friction damping block 11 installed between hydraulic damping column 7 and external cylinder 3 displaces with the equipment's upward and downward vibration, dissipating energy through mutual collision, compression, and friction. On the other hand, when the cylindrical cavity 6 moves downward, the piston tie rod 24 is pulled by the turret tie rod 23 to make the turret piston plate 28 slide outward, and the damping liquid 27 in the elastic liquid chamber shell 26 is squeezed, generating a pressure difference on both sides of the turret piston plate 28. In order to balance the uneven pressure in the cavity, the damping liquid needs to enter the other side of the turret piston plate 28, that is, the cavity formed by the elastic liquid chamber shell 26, through the connecting hole 29. In this process, vertical vibration reduction and energy consumption of the turret vibration reduction device are achieved.

[0084] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device, characterized by: It includes an equipment pedestal, an external cylinder, a base, a support column, a cylindrical cavity, a hydraulic damping column, a spring damping support, a magnetorheological fluid, an annular piston plate, a tie rod, a curved tube and a flexible partition; There are multiple spring damping supports inside the outer cylinder, and the spring damping supports and the outer cylinder are fixedly mounted on the base. One hydraulic damping column is fixedly mounted on each spring damping support, and all the hydraulic damping columns jointly support the cylindrical cavity; The cylindrical cavity is divided into an open slideway and a damping cavity by an annular piston plate; the bottom end of the support column contacts the open slideway and can slide along the open slideway; the damping cavity contains magnetorheological fluid and a Ti-Ni shape memory alloy spring and is equally divided into an even number of independent small cavities by the flexible partition, each small cavity being connected to the small cavity opposite it through a curved tube; The annular piston plate is connected to a support column at the location of each small cavity through a tie rod, and the support column supports an equipment stand for placing the equipment; The curved tube is wrapped with an energized coil, which is connected to a controller. The controller controls the current in the energized coil according to the horizontal vibration amplitude of the equipment base, thereby changing the fluidity and viscosity of the magnetorheological fluid in the curved tube. The lower part of the cylindrical cavity is connected to a rotating frame vibration damping device, and the rotating frame vibration damping device consists of four fixed plates a, four rotating frame rods, two piston rods and a piston-damping liquid-liquid cavity sac shell vibration damping device; the first fixed plate a is fixedly installed at the lower part of the cylindrical cavity, the third fixed plate a is fixedly installed on the base, and the second fixed plate a and the fourth fixed plate a are suspended in the air; the four fixed plates a and the four rotating frame rods are cross-connected to form a parallelogram device, and the piston-damping liquid-liquid cavity sac shell vibration damping device is located at the center of the parallelogram device, and one end of the two piston rods is fixedly connected to the two suspended fixed plates a, and the other end is connected to the piston-damping liquid-liquid cavity sac shell vibration damping device; the piston-damping liquid-liquid cavity sac shell The shell vibration damping device includes four fixed plates b, two rotating frame piston plates, damping fluid and four elastic liquid chamber sac shells; the four fixed plates b form a square cylinder, the two rotating frame piston plates are located in the square cylinder, and the sides contact the inner wall of the square cylinder and can slide along the inner wall of the square cylinder; the four fixed plates b and the two rotating frame piston plates form a rectangular cavity; each elastic liquid chamber sac shell forms a rectangular cavity with the square cylinder and a rotating frame piston plate; each rectangular cavity is filled with the damping fluid; the two rotating frame piston plates are provided with connecting holes to connect the damping fluid on the left and right sides. When the cylindrical cavity moves downward, the rotating frame tie rod pulls the piston tie rod to make the rotating frame piston plate slide outward.

2. The inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to claim 1, characterized in that: The top of the cylindrical cavity is connected to the outer cylinder through a plurality of evenly distributed damping pistons.

3. The inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to claim 2, characterized in that: A through hole is provided on the top of the cylindrical cavity at the portion connected to the push rod of the damping piston, and the push rod of the damping piston is hollow for connecting the magnetorheological fluid in the damping piston cavity and the damping cavity.

4. The inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to claim 1, characterized in that: A buffer plate is attached to the side of the equipment base, and a friction layer is attached to the surface of the buffer plate; A limit baffle is installed on the upper part of the outer cylinder, and a friction layer is attached to the side of the limit baffle; The friction layer on the limit baffle contacts the friction layer on the buffer plate.

5. The inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to claim 1, characterized in that: An elastic friction vibration-damping block is attached to the side of the hydraulic vibration-damping column close to the outer cylinder.

6. The operating method of the inertial capacity multi-dimensional multi-stage vibration reduction and isolation support device according to any one of claims 1 to 5, characterized in that: The steps include: The horizontal vibration of the equipment is transmitted to the tie rod through the equipment base and support columns. Under the horizontal vibration, the tie rod pushes the annular piston plate to squeeze the magnetorheological fluid inside the damping cavity. To balance the uneven pressure in the damping cavity, the magnetorheological fluid in each small cavity and the small cavity opposite it circulates through the curved tube. The Ti-Ni shape memory alloy spring in the damping cavity can provide damping force. The vertical vibration of the equipment is transmitted to the cylindrical cavity through the equipment base and the support column, and then transmitted from the cylindrical cavity to the hydraulic vibration reduction column, the spring vibration reduction support and the rotating frame vibration reduction device.

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