A three-dimensional energy dissipation and vibration reduction device

Abstract

The present invention relates to the technical field of energy-dissipating vibration damping devices, and discloses a three-dimensional energy-dissipating vibration damping device, comprising: a bottom plate, a first permanent magnet is arranged at the center of the bottom plate, and annular sleeves inclined towards the center of the bottom plate are respectively arranged at the four corners; a top plate, a fourth permanent magnet is arranged at the center of the top plate, and columns corresponding to the annular sleeves at the four corners of the bottom plate are respectively arranged at the four corners, and the inclination of each column is the same as that of the corresponding annular sleeve; a box body, a second permanent magnet and a third permanent magnet are respectively arranged on the bottom surface and the top surface of the box body, and channels adapted to the columns are arranged at the four corners; the lower end of each column passes through the corresponding channel and extends into the annular sleeve; the magnetic poles of the first permanent magnet and the second permanent magnet close to each other are the same, the magnetic poles of the third permanent magnet and the fourth permanent magnet close to each other are the same, and magnetorheological fluid is arranged in the annular sleeve. The present invention realizes multi-dimensional and multiple energy dissipation, has good energy-dissipating vibration damping effect; has a wide working frequency range and a wide application range.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-dissipating vibration damping devices, and particularly relates to a three-dimensional energy-dissipating vibration damping device. Background Art

[0002] With the development of society, the progress of technology, and the continuous increase in urban population density, high-rise buildings and super high-rise buildings have shown a mushrooming development. However, external forces such as earthquakes and strong winds have a huge impact on high-rise buildings, and in severe cases, they even pose a threat to people's lives. Therefore, vibration damping and isolation components play a very important role in the safety of high-rise buildings.

[0003] Existing vibration damping devices can only damp vibrations in a single horizontal or vertical direction, and the frequency band is relatively narrow. However, vibration energy is generally three-dimensionally input and has uncertainty, so existing vibration damping devices have relatively large defects. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a three-dimensional energy-dissipating vibration damping device, which expands the working frequency range of existing energy-dissipating vibration damping devices, solves the shortcoming that existing energy-dissipating vibration damping devices can only perform single-dimensional energy-dissipating vibration damping, and enriches its energy-dissipating mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions.

[0006] A three-dimensional energy-dissipating vibration damping device, comprising:

[0007] A bottom plate, with a first permanent magnet arranged at the center of the bottom plate; annular sleeves inclined towards the center of the bottom plate are respectively arranged at the four corners of the bottom plate;

[0008] A top plate, with a fourth permanent magnet arranged at the center of the top plate, and columns corresponding to the annular sleeves at the four corners of the bottom plate are respectively arranged at the four corners of the bottom surface of the top plate. The inclination of each column is the same as that of the corresponding annular sleeve;

[0009] A box body, with a second permanent magnet and a third permanent magnet respectively arranged on the bottom surface and the top surface of the box body; holes adapted to the columns are arranged at the four corners of the box body; the lower end of each column passes through the corresponding hole and extends into the annular sleeve;

[0010] The poles of the first permanent magnet and the second permanent magnet that are close to each other are the same, the poles of the third permanent magnet and the fourth permanent magnet that are close to each other are the same, and a magnetorheological fluid is arranged in the annular sleeve.

[0011] Preferably, an inner cavity is provided at the center of the box body, and a cubic stiffness vibration absorber suspended in the middle of the inner cavity is connected to the inner wall of the inner cavity through a plurality of springs; the inner cavity is filled with a viscous liquid, and the liquid level of the viscous liquid is higher than the bottom surface of the cubic stiffness vibration absorber and lower than the top surface of the cubic stiffness vibration absorber.

[0012] Further preferably, the cubic stiffness vibration absorber includes an inner box in the shape of a cuboid. One end of each spring is connected to the outer wall of the inner box, and the other end is connected to the inner wall of the inner cavity; the end of each spring connected to the inner wall of the inner cavity is higher than the end connected to the outer wall of the inner box.

[0013] A piezoelectric ceramic layer is provided on the inner wall of the inner box, and a heating resistance wire connected in series with the piezoelectric ceramic layer is also included; multiple layers of partitions are horizontally arranged in the inner box, and the inner box is divided into multiple layers of spaces by the multiple layers of partitions. A plurality of rigid balls are arranged in each layer of space, and the rigid balls in each layer of space can roll within the layer of space.

[0014] Further preferably, the inner box is made of metal.

[0015] Preferably, the N pole of the first permanent magnet faces downward and the S pole faces upward; the S pole of the second permanent magnet faces downward and the N pole faces upward; the S pole of the third permanent magnet faces downward and the N pole faces upward; the N pole of the fourth permanent magnet faces downward and the S pole faces upward.

[0016] Or the N pole of the first permanent magnet faces upward and the S pole faces downward; the S pole of the second permanent magnet faces upward and the N pole faces downward; the S pole of the third permanent magnet faces upward and the N pole faces downward; the N pole of the fourth permanent magnet faces upward and the S pole faces downward.

[0017] Further preferably, the spring is a shape memory alloy spring.

[0018] Further preferably, the number of springs is 10. Three springs are evenly connected to each of the two longer outer walls of the inner box; two springs are evenly connected to each of the two shorter outer walls of the inner box.

[0019] Preferably, the inner diameter of the hole is larger than that of the column, and a filling material is provided in the gap between the hole and the column.

[0020] Preferably, the annular sleeve includes two annular sleeves sleeved together.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The present invention combines the advantages of electromagnetic energy dissipation, particle damping, tuned mass damper, tuned liquid damper, and cubic stiffness vibration absorber, realizes multi-dimensional and multiple energy dissipation, has good energy dissipation and vibration reduction effects; expands the working frequency range of the energy dissipation and vibration reduction device, and improves the working efficiency of the energy dissipation and vibration reduction device; is applicable to energy dissipation and vibration reduction in any direction in three-dimensional space, and has a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0024] Figure 1 It is a schematic structural diagram of a three-dimensional energy dissipation and vibration reduction device;

[0025] Figure 2 It is a vertical sectional view of a three - dimensional energy - dissipating vibration - reduction device;

[0026] Figure 3 It is a horizontal sectional view of a three - dimensional energy - dissipating vibration - reduction device;

[0027] Figure 4 It is a schematic diagram of the magnetic field of a three - dimensional energy - dissipating vibration - reduction device;

[0028] The reference numerals are: 1. bottom plate; 2. top plate, 3. box body; 4. spring; 5. cubic stiffness vibration absorber; 11. first permanent magnet; 12. annular sleeve; 21. fourth permanent magnet, 22. column; 31. second permanent magnet; 32. third permanent magnet; 33. hole; 51. inner box; 52. rigid ball. Detailed implementation manners

[0029] The following will describe the implementation scheme of the present invention in detail in combination with embodiments. However, those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.

[0030] Refer to Figure 1 , which is a schematic structural diagram of the three - dimensional energy - dissipating vibration - reduction device of the present invention. A three - dimensional energy - dissipating vibration - reduction device includes:

[0031] A bottom plate 1, with a first permanent magnet 11 arranged at the center of the bottom plate 1; annular sleeves 12 inclined towards the center of the bottom plate are respectively arranged at the four corners of the bottom plate 1; preferably, the annular sleeves 12 are two annular sleeves sleeved together;

[0032] A top plate 2, with a fourth permanent magnet 21 arranged at the center of the top plate 2, and columns 22 corresponding to the annular sleeves 12 at the four corners of the bottom plate 1 are respectively arranged at the four corners of the bottom surface of the top plate 2. The inclination of each column 22 is the same as that of the corresponding annular sleeve 12;

[0033] A box body 3, with a second permanent magnet 31 and a third permanent magnet 32 respectively arranged on the bottom surface and the top surface of the box body 3; holes 33 adapted to the columns 22 are arranged at the four corners of the box body 3; the lower end of each column 22 passes through the corresponding hole 33 and extends into the annular sleeve 12. In this embodiment, the inner diameter of the hole 33 is larger than that of the column 22, and a filling material is arranged in the gap between the hole 33 and the column 22.

[0034] The poles of the first permanent magnet 11 and the second permanent magnet 31 that are close to each other are the same, and the poles of the third permanent magnet 32 and the fourth permanent magnet 21 that are close to each other are the same; a magnetorheological fluid is arranged in the annular sleeve 12.

[0035] There are two ways to set the magnetic field of the three-dimensional energy dissipation and vibration reduction device. The first way is that the N pole of the first permanent magnet faces downwards and the S pole faces upwards; the S pole of the second permanent magnet faces downwards and the N pole faces upwards; the S pole of the third permanent magnet faces downwards and the N pole faces upwards; the N pole of the fourth permanent magnet faces downwards and the S pole faces upwards. The second way is that the N pole of the first permanent magnet faces upwards and the S pole faces downwards; the S pole of the second permanent magnet faces upwards and the N pole faces downwards; the S pole of the third permanent magnet faces upwards and the N pole faces downwards; the N pole of the fourth permanent magnet faces upwards and the S pole faces downwards. In this embodiment, the first way of setting the magnetic field is adopted, as Figure 4 shown.

[0036] The assembly process of the three-dimensional energy dissipation and vibration reduction device of the present invention is as follows:

[0037] Annular sleeves 12 inclined towards the center of the bottom plate are fixedly installed at the four corners of the bottom plate 1; the box body is placed on the annular sleeves 12, and the top plate 2 is installed so that the lower ends of each column 22 of the top plate 2 pass through the corresponding holes 33 on the box body and extend into the annular sleeves 12 of the bottom plate 1 to complete the assembly. After the assembly is completed, the bottom plate can be fixed to the building structure by bolts.

[0038] In the above embodiment, the bottom plate 1 of the three-dimensional energy dissipation and vibration reduction device of the present invention can be fixedly installed on the building structure by bolts. The bottom plate 1 and the bottom surface of the box body 3 repel each other; the top surface of the box body 3 and the top plate 2 repel each other. When the building structure is vibrated in any direction in the three-dimensional space, the vibration energy transmitted from the outside causes the columns to vibrate, and the filling material in the gap between the holes and the columns deforms, consuming part of the vibration energy; the deformation of the filling material drives the box body to vibrate three-dimensionally along the columns, causing the box body 3 to generate lateral movement and vertical movement; the lateral movement of the box body converts the vibration energy into the kinetic energy of the box body and consumes it, and the vertical movement of the box body causes the lower ends of the columns to squeeze the magnetorheological fluid in the annular sleeve, and the flowing direction of the magnetorheological fluid is perpendicular to the magnetic field direction; and the vertical movement of the box body causes the magnetic field strength between the first permanent magnet and the second permanent magnet to change, that is, the magnetic field strength where the magnetorheological fluid is located changes with the vertical movement of the box body, causing the flow performance of the magnetorheological fluid to change and consuming the vibration energy. When the box body moves vertically, the magnetorheological fluid cuts the magnetic induction lines, consuming part of the vibration energy.

[0039] Refer to Figure 2 and Figure 3 , Figure 2 which is the vertical sectional view of the three-dimensional energy dissipation and vibration reduction device, Figure 3It is a horizontal sectional view of a three-dimensional energy dissipation and vibration reduction device. As a preferred embodiment of the present invention, the center of the box body 3 is provided with an inner cavity, and the inner wall of the inner cavity is connected with a cubic stiffness vibration absorber 5 suspended in the middle of the inner cavity through a plurality of springs 4; the inner cavity is filled with viscous liquid, and the liquid level of the viscous liquid is higher than the bottom surface of the cubic stiffness vibration absorber 5 and lower than the top surface of the cubic stiffness vibration absorber 5; the cubic stiffness vibration absorber 5 includes an inner box 51 in the shape of a cuboid, and the inner box 51 is partially submerged in the viscous liquid. One end of each spring 4 is connected to the outer wall of the inner box 51, and the other end is connected to the inner wall of the inner cavity; the end of each spring 4 connected to the inner wall of the inner cavity is higher than the end connected to the outer wall of the inner box 51. In this embodiment, the inner box 51 is made of metal, preferably iron; the spring 4 is a shape memory alloy spring. The number of springs 4 is 10, and 3 springs are evenly connected to the two longer outer walls of the inner box respectively; 2 springs are evenly connected to the two shorter outer walls of the inner box respectively.

[0040] The box body 3 undergoes lateral and vertical movements, transmitting the vibration energy to the viscous liquid, the spring 4, and the inner box 51 in the cavity of the box body. The vibration energy causes the viscous liquid to vibrate and converts the vibration energy into the internal energy of the viscous liquid, increasing the temperature of the viscous liquid; the spring targets the vibration energy to the inner box 51, and the inner box 51 undergoes three-dimensional movement, overcoming the resistance of the viscous liquid in the cavity of the box body and thus dissipating energy. Moreover, the inner box is in the magnetic field between the N pole of the second permanent magnet and the S pole of the third permanent magnet, and the horizontal movement of the inner box cuts the magnetic induction lines, generating an induced current to heat the inner box and consume energy.

[0041] The vibration energy of the box body 3 and the three-dimensional movement of the inner box 51 cause the spring to deform. In this embodiment, the spring is a shape memory spring, which can completely eliminate the deformation that occurs at a lower temperature and restore its original shape before deformation after heating up, thereby further accelerating the recovery process of the spring and the energy dissipation process. The spring is sensitive to vibration, and even a slight vibration can cause the spring to deform, broadening the working frequency range of the energy dissipation and vibration reduction device.

[0042] As a preferred embodiment of the present invention, a piezoelectric ceramic layer is provided on the inner wall of the inner box 51, and a heating resistance wire is connected in series with the piezoelectric ceramic layer. A plurality of partition plates are horizontally arranged in the inner box 51, dividing the inner box into multiple layers of spaces, and a plurality of rigid balls 52 are arranged in each layer of space, and the rigid balls in each layer of space can roll in the layer of space.

[0043] In the above embodiments, when the inner box undergoes three-dimensional movement, the rigid balls in each layer of space inside the inner box roll in the layer of space, undergoing inelastic collisions, converting the kinetic energy of the inner box into the internal energy of the rigid balls and consuming it; the rigid balls collide with the piezoelectric ceramics on the inner wall of the inner box during rolling, and the piezoelectric ceramics generate electricity under pressure, converting the kinetic energy into electrical energy; the piezoelectric ceramics are connected in series with the heating resistance wire, converting the electrical energy into internal energy and consuming it.

[0044] The present invention combines the advantages of electromagnetic energy dissipation, particle damping, tuned mass damper, tuned liquid damper, and cubic stiffness vibration absorber, achieving multi-dimensional and multiple energy dissipation, enabling each part to fully exert its advantages, having a wide vibration reduction frequency band, etc., and is applicable to the vibration isolation of building structures.

[0045] Although the present invention has been described in detail in this specification with general descriptions and specific implementation examples, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A three-dimensional energy dissipation and vibration reduction device, characterized in that , comprising: A bottom plate (1), with a first permanent magnet (11) arranged at the center of the bottom plate (1); annular sleeves (12) inclined towards the center of the bottom plate are respectively arranged at the four corners of the bottom plate (1); A top plate (2), with a fourth permanent magnet (21) arranged at the center of the top plate (2), and columns (22) corresponding to the annular sleeves (12) at the four corners of the bottom plate (1) are respectively arranged at the four corners of the bottom surface of the top plate (2), and the inclination of each column (22) is the same as that of the corresponding annular sleeve (12); A box body (3), with a second permanent magnet (31) and a third permanent magnet (32) respectively arranged on the bottom surface and the top surface of the box body (3); holes (33) adapted to the columns (22) are arranged at the four corners of the box body (3), and the inner diameter of the holes (33) is larger than that of the columns (22); the lower end of each column (22) passes through the corresponding hole (33) and extends into the annular sleeve (12); The poles of the first permanent magnet (11) and the second permanent magnet (31) that are close to each other are the same, the poles of the third permanent magnet (32) and the fourth permanent magnet (21) that are close to each other are the same, and magnetorheological fluid is arranged in the annular sleeve (12).

2. The three-dimensional energy dissipation and vibration reduction device according to claim 1, characterized in that , a cavity is arranged at the center of the box body (3), and a cubic stiffness vibration absorber (5) suspended in the middle of the cavity is connected to the inner wall of the cavity through a plurality of springs (4); the cavity is filled with viscous liquid, and the liquid level of the viscous liquid is higher than the bottom surface of the cubic stiffness vibration absorber (5) and lower than the top surface of the cubic stiffness vibration absorber (5).

3. The three-dimensional energy dissipation and vibration reduction device according to claim 2, characterized in that , the cubic stiffness vibration absorber (5) comprises an inner box (51) in the shape of a cuboid, one end of each spring (4) is connected to the outer wall of the inner box (51), and the other end is connected to the inner wall of the cavity; one end of each spring (4) connected to the inner wall of the cavity is higher than the end connected to the outer wall of the inner box (51); A piezoelectric ceramic layer is arranged on the inner wall of the inner box (51), and a heating resistance wire connected in series with the piezoelectric ceramic layer is further included; a plurality of layers of partition plates are horizontally arranged in the inner box (51), and the inner box is divided into multiple layers of spaces by the plurality of layers of partition plates, and a plurality of rigid balls (52) are arranged in each layer of space, and the rigid balls in each layer of space can roll in the layer of space.

4. The three-dimensional energy dissipation and vibration reduction device according to claim 3, characterized in that , the inner box (51) is made of metal material.

5. The three-dimensional energy dissipation and vibration reduction device according to claim 1, characterized in that , the N pole of the first permanent magnet faces downwards and the S pole faces upwards; the S pole of the second permanent magnet faces downwards and the N pole faces upwards; the S pole of the third permanent magnet faces downwards and the N pole faces upwards; the N pole of the fourth permanent magnet faces downwards and the S pole faces upwards; or the N pole of the first permanent magnet faces upwards and the S pole faces downwards; the S pole of the second permanent magnet faces upwards and the N pole faces downwards; the S pole of the third permanent magnet faces upwards and the N pole faces downwards; the N pole of the fourth permanent magnet faces upwards and the S pole faces downwards.

6. The three-dimensional energy dissipation and vibration reduction device according to claim 2, characterized in that , the spring (4) is a shape memory alloy spring.

7. The three-dimensional energy dissipation and vibration reduction device according to claim 3, characterized in that , the number of the springs (4) is 10, and three springs are evenly connected to the two longer outer walls of the inner box respectively; two springs are evenly connected to the two shorter outer walls of the inner box respectively.

8. The three-dimensional energy dissipation and vibration reduction device according to claim 1, characterized in that , a filling material is arranged in the gap between the pore passage (33) and the column (22).

9. The three-dimensional energy dissipation and vibration reduction device according to claim 1, characterized in that , the annular sleeve (12) comprises two annular sleeves sleeved together.

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