CN211848861U - Novel liquid tuned mass damper - Google Patents
Novel liquid tuned mass damper Download PDFInfo
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- CN211848861U CN211848861U CN201922390276.6U CN201922390276U CN211848861U CN 211848861 U CN211848861 U CN 211848861U CN 201922390276 U CN201922390276 U CN 201922390276U CN 211848861 U CN211848861 U CN 211848861U
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Abstract
The utility model discloses a novel harmonious mass damper of liquid, including the quality piece, two cubic rigidity nonlinear spring of quality piece bottom fixedly connected with, quality piece one end fixedly connected with steel sheet base is kept away from to cubic rigidity nonlinear spring, still includes liquid power consumption device and damping device and constitutes, liquid power consumption device includes liquid, baffle and metal spoiler net, the quality piece top is encircleed and is equipped with the baffle, the inside packing of baffle has liquid. The spring of the damper of the utility model belongs to nonlinearity, the rigidity can change along with the change of the spring displacement, and further the fixed frequency of the damper can also change, and the damper has the characteristic of a wide frequency band; meanwhile, the damper is provided with a liquid energy consumption device in the mass block, so that the energy consumption capability of the damper is improved.
Description
Technical Field
The utility model relates to a civil engineering structure vibration control field, in particular to novel harmonious mass damper of liquid.
Background
In order to control the vibration of the bridge under wind load or pedestrian load, the traditional technical means is to use Tuned Mass Dampers (TMD). The TMD is mainly composed of a mass block, an elastic unit that can provide an elastic restoring force, and a damping unit that can provide a damping force. The TMDs are classified into a supporting TMD and a suspended TMD. The supporting TMD uses vertical springs to provide restoring force, which can control vertical vibration. The suspended TMD uses the component of gravity along the tangent line when the mass block swings as restoring force, and is mainly used for controlling transverse vibration. In practical engineering, when it is necessary to control the horizontal and vertical vibrations simultaneously, the supporting TMD and the suspended TMD must be used at the corresponding positions, respectively.
The traditional TMD adopts a hydraulic viscous damper to provide damping, has certain rigidity while providing the damping, and cannot realize the separation of the rigidity and the damping, so that the realization of accurate damping adjustment has certain difficulty. And the hydraulic viscous damper still has the hidden danger of oil leak, is difficult for the maintenance, and the later stage is difficult to adjust, increases the degree of difficulty and the cost of later stage maintenance.
Therefore, it is necessary to invent a new liquid tuned mass damper to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel harmonious mass damper of liquid to solve the traditional TMD that proposes in the above-mentioned background art and adopt hydraulic pressure viscous damper to provide the damping, also have certain rigidity when providing the damping, can't accomplish rigidity and damping separation, consequently will realize that accurate damping adjustment has certain degree of difficulty. And the hydraulic viscous damper still has the hidden danger of oil leak, is difficult for the maintenance, and the later stage is difficult to adjust, increases the degree of difficulty and the problem of cost of later maintenance.
In order to achieve the above object, the utility model provides a following technical scheme: a novel liquid tuned mass damper comprises a mass block, wherein the bottom of the mass block is fixedly connected with two cubic stiffness nonlinear springs, one ends, far away from the mass block, of the cubic stiffness nonlinear springs are fixedly connected with a steel plate base, the novel liquid tuned mass damper also comprises a liquid energy dissipation device and a damping device, the liquid energy dissipation device comprises liquid, a baffle plate and a metal turbulence net, the top of the mass block is provided with the baffle plate in a surrounding manner, the interior of the baffle plate is filled with the liquid, and the inner wall of the baffle plate is fixedly connected with the metal turbulence net;
the damping device comprises a damping rod, a damping cylinder and damping liquid, the damping rod is arranged at the bottom of the mass block, the damping cylinder is arranged on the outer side of the damping rod, and the damping liquid is filled in the damping cylinder.
Preferably, the elasticity of the cubic stiffness nonlinear spring is in direct proportion to the cube of displacement and is symmetrically arranged at four corners of the steel plate base.
Preferably, the damping device is arranged in the middle area of the damper, the damping rod is welded on the mass block, and the damping cylinder is welded on the steel plate base.
Preferably, the damping cylinder is filled with damping fluid with certain viscosity, and the cubic stiffness nonlinear spring is connected on the mass block and the steel plate base by a fastener.
Preferably, the liquid energy consumption device is arranged on the mass block, and the total mass of the mass block is designed in consideration of the mass of liquid in the liquid energy consumption device.
Preferably, the baffle plate is tightly welded with the lower mass block, and the baffle plate is tightly welded with the upper cover plate.
Preferably, a horizontal metal turbulence net is arranged in the middle of the liquid energy consumption device, and the liquid volume does not pass through the metal turbulence net in a static state.
The utility model has the advantages that:
when a bridge and the like connected with the damper resonate, vibration is transmitted to the mass block through the cubic stiffness nonlinear spring, no matter the cubic stiffness nonlinear spring is in a stretching or compressing state, acting force on the mass block and a floor is always opposite, namely the mass block always vibrates in the opposite direction to the floor, the vibration attenuation principle of the tuned mass damper is that the actual stiffness of the cubic stiffness nonlinear spring is related to deformation of the cubic stiffness nonlinear spring, the cubic stiffness nonlinear spring is continuously stretched and compressed and changes in stiffness in the vibration process, the frequency of the tuned mass damper also changes in a frequency bandwidth, so that the tuned mass damper has a certain vibration attenuation effect on vibration in the frequency bandwidth range, in the vertical process, the damping rod moves up and down in the damping cylinder, relative speed is generated between the damping rod and damping liquid, and then damping force is generated, the liquid mass has up and down vibration along with solid mass, the liquid shakes, and meanwhile, the liquid penetrates through the metal spoiler network to provide certain extra damping, so that the vibration reduction effect of the metal spoiler network is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the metal spoiler structure of the present invention;
in the figure: the damping device comprises a mass block 1, a cubic stiffness nonlinear spring 2, a steel plate base 3, a damping rod 4, liquid 5, a baffle 6, a metal turbulence net 7, a damping cylinder 8 and damping liquid 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model provides a novel liquid tuned mass damper as shown in figures 1-2, which comprises a mass block 1, wherein the bottom of the mass block 1 is fixedly connected with two cubic stiffness nonlinear springs 2, one ends of the cubic stiffness nonlinear springs 2 far away from the mass block 1 are fixedly connected with a steel plate base 3, the novel liquid tuned mass damper also comprises a liquid energy dissipation device and a damping device, the liquid energy dissipation device comprises liquid 5, a baffle 6 and a metal turbulence net 7, the baffle 6 is arranged around the top of the mass block 1, the baffle 6 is filled with the liquid 5, and the inner wall of the baffle 6 is fixedly connected with the metal turbulence net 7;
the damping device comprises a damping rod 4, a damping cylinder 8 and damping liquid 9, the damping rod 4 is arranged at the bottom of the mass block 1, the damping cylinder 8 is arranged on the outer side of the damping rod 4, and the damping liquid 9 is filled in the damping cylinder 8.
Further, in the above technical solution, the elasticity of the cubic stiffness nonlinear spring 2 is proportional to the cube of the displacement, and the spring is symmetrically arranged at four corners of the steel plate base 3;
further, in the above technical solution, the damping device is arranged in the middle area of the damper, the damping rod 4 is welded on the mass block 1, and the damping cylinder 8 is welded on the steel plate base 3;
further, in the above technical scheme, the damping cylinder 8 is filled with damping fluid 9 with a certain viscosity, and the cubic stiffness nonlinear spring 2 is connected on the mass block 1 and the steel plate base 3 by a fastener;
further, in the above technical solution, the liquid energy consumption device is disposed on the mass block 1, and the total mass of the mass block 1 should be designed in consideration of the mass of the liquid 5 in the liquid energy consumption device;
further, in the above technical solution, the baffle 6 is tightly welded to the lower mass block 1, and the baffle 6 is tightly welded to the upper cover plate;
further, in the above technical solution, a horizontal metal turbulence net 7 is provided in the middle of the liquid energy consumption device, and the volume of the liquid 5 under a static state is submerged in the metal turbulence net 7.
This practical theory of operation:
referring to the attached drawings 1-2 of the specification, when a bridge and the like connected with a damper resonate, vibration is transmitted to a mass block 1 through a cubic stiffness nonlinear spring 2, no matter the cubic stiffness nonlinear spring 2 is in a stretching or compressing state, the acting force of the cubic stiffness nonlinear spring 2 on the mass block 1 and a floor is always opposite, namely, the mass block 1 always vibrates in the opposite direction to the floor, which is the vibration attenuation principle of a tuned mass damper, the actual stiffness of the cubic stiffness nonlinear spring 2 is related to the deformation of the cubic stiffness nonlinear spring, the cubic stiffness nonlinear spring 2 is continuously stretched and compressed in the vibration process, the stiffness is also changed, the frequency of the tuned mass damper is also changed in a frequency band, so that the tuned mass damper has a certain vibration attenuation effect on the vibration in the frequency band range, in the vertical process, a damping rod 4 moves up and down in a damping cylinder 8, and generates relative speed with a damping liquid 9, and then damping force is generated, the liquid mass has liquid shaking except the up-and-down vibration along with the solid mass, and meanwhile, the liquid passes through the metal turbulence net 7 to provide certain extra damping, so that the vibration reduction effect of the liquid vibration damper is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. A novel liquid tuned mass damper is characterized in that: the device comprises a mass block (1), two cubic stiffness nonlinear springs (2) are fixedly connected to the bottom of the mass block (1), one ends, far away from the mass block (1), of the cubic stiffness nonlinear springs (2) are fixedly connected with a steel plate base (3), the device also comprises a liquid energy dissipation device and a damping device, the liquid energy dissipation device comprises liquid (5), a baffle (6) and a metal turbulence net (7), the top of the mass block (1) is provided with the baffle (6) in a surrounding mode, the baffle (6) is filled with the liquid (5), and the inner wall of the baffle (6) is fixedly connected with the metal turbulence net (7);
the damping device comprises a damping rod (4), a damping cylinder (8) and damping liquid (9), wherein the damping rod (4) is arranged at the bottom of the mass block (1), the damping cylinder (8) is arranged on the outer side of the damping rod (4), and the damping liquid (9) is filled in the damping cylinder (8).
2. The novel liquid tuned mass damper according to claim 1, wherein: the elasticity of the cubic stiffness nonlinear spring (2) is in direct proportion to the cube of displacement, and the spring is symmetrically arranged at four corners of the steel plate base (3).
3. The novel liquid tuned mass damper according to claim 1, wherein: the damping device is arranged in the middle area of the damper, the damping rod (4) is welded on the mass block (1), and the damping cylinder (8) is welded on the steel plate base (3).
4. The novel liquid tuned mass damper according to claim 1, wherein: the damping cylinder (8) is filled with damping liquid (9) with certain viscosity, and the cubic stiffness nonlinear spring (2) is connected with the mass block (1) and the steel plate base (3) through fasteners.
5. The novel liquid tuned mass damper according to claim 1, wherein: the liquid energy consumption device is arranged on the mass block (1), and the total mass of the mass block (1) is designed by taking the mass of the liquid (5) in the liquid energy consumption device into consideration.
6. The novel liquid tuned mass damper according to claim 1, wherein: the baffle (6) is tightly welded with the lower mass block (1), and the baffle (6) is tightly welded with the upper cover plate.
7. The novel liquid tuned mass damper according to claim 1, wherein: a horizontal metal turbulence net (7) is arranged in the middle of the liquid energy consumption device, and the volume of the liquid (5) does not pass through the metal turbulence net (7) in a static state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390276.6U CN211848861U (en) | 2019-12-27 | 2019-12-27 | Novel liquid tuned mass damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922390276.6U CN211848861U (en) | 2019-12-27 | 2019-12-27 | Novel liquid tuned mass damper |
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| CN211848861U true CN211848861U (en) | 2020-11-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089865A (en) * | 2021-03-15 | 2021-07-09 | 株洲时代新材料科技股份有限公司 | Tuned mass damping device |
| CN113266194A (en) * | 2021-06-24 | 2021-08-17 | 南方电网科学研究院有限责任公司 | Semi-active vibration reduction control device for wind vibration of power transmission tower |
| CN113293877A (en) * | 2021-05-11 | 2021-08-24 | 昆明学院 | Be applied to universal damping subassembly of anti-wind tensile on shock insulation layer |
| CN113914494A (en) * | 2021-10-12 | 2022-01-11 | 株洲时代新材料科技股份有限公司 | Horizontal universal pot type medium damper and series type damping vibration isolation combination |
-
2019
- 2019-12-27 CN CN201922390276.6U patent/CN211848861U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089865A (en) * | 2021-03-15 | 2021-07-09 | 株洲时代新材料科技股份有限公司 | Tuned mass damping device |
| CN113089865B (en) * | 2021-03-15 | 2022-04-26 | 株洲时代新材料科技股份有限公司 | Tuned mass damping device |
| CN113293877A (en) * | 2021-05-11 | 2021-08-24 | 昆明学院 | Be applied to universal damping subassembly of anti-wind tensile on shock insulation layer |
| CN113293877B (en) * | 2021-05-11 | 2022-09-20 | 昆明学院 | Be applied to universal damping subassembly of anti-wind tensile on shock insulation layer |
| CN113266194A (en) * | 2021-06-24 | 2021-08-17 | 南方电网科学研究院有限责任公司 | Semi-active vibration reduction control device for wind vibration of power transmission tower |
| CN113914494A (en) * | 2021-10-12 | 2022-01-11 | 株洲时代新材料科技股份有限公司 | Horizontal universal pot type medium damper and series type damping vibration isolation combination |
| CN113914494B (en) * | 2021-10-12 | 2023-01-31 | 株洲时代新材料科技股份有限公司 | Horizontal universal pot type medium damper and series type damping vibration isolation combination |
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