CN211082664U - Corrosion-resistant high-flux double-liquid damper - Google Patents
Corrosion-resistant high-flux double-liquid damper Download PDFInfo
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- CN211082664U CN211082664U CN201922122640.0U CN201922122640U CN211082664U CN 211082664 U CN211082664 U CN 211082664U CN 201922122640 U CN201922122640 U CN 201922122640U CN 211082664 U CN211082664 U CN 211082664U
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Abstract
The utility model discloses a two liquid attenuator of anticorrosive high flux, include: the damping structure comprises an outer sleeve and two symmetrical damping structures; the damping structure includes: a magnetorheological fluid cylinder, a shear thickening fluid cylinder and a core column; the shear thickening liquid cylinder and the outer sleeve are coaxial, and the axes of the magnetorheological liquid cylinder and the outer sleeve are parallel; the large end of the core column is arranged in the shear thickening liquid cylinder, and the small end of the core column extends out of the top of the outer sleeve; the three magnetorheological fluid cylinders are arranged in the same plane and are respectively positioned at three vertexes of the equilateral triangle, and the adjacent magnetorheological fluid cylinders are connected through a first connecting piece; the bottom of the shear thickening liquid cylinder is connected with the tops of the three magnetorheological liquid cylinders through a second spring and a second connecting piece; the two symmetrically arranged damping structures are connected through a first spring; the core column of one damping structure extends out of the top of the outer sleeve and is fixed with the outer sleeve; the inner wall of the magnetorheological fluid cylinder is provided with an excitation coil. The damper has good damping effect, can effectively resist abrasion and corrosion, can realize automatic restoration, and has wider application range.
Description
Technical Field
The utility model belongs to the technical field of engineering structure vibration control, a two liquid dampers of anticorrosive high flux are related to.
Background
The impact and the vibration are relatively common natural phenomena and are widely applied to industrial production and mechanical equipment. Energy absorption and dissipation of shock and vibration is important to avoid the interference and damage caused by the shock and vibration. The magneto-rheological liquid is an intelligent material with excellent performance, when the magneto-rheological liquid receives the action of a magnetic field, magnetic particles in the magneto-rheological liquid are arranged into a chain along the direction of the magnetic field to form a Bingham solid plastic body, the apparent viscosity is increased, once the magnetic field is removed, the fluid returns to the original Newtonian fluid state with good fluidity, the response time is only a few milliseconds, and the change characteristic of continuous, reversible, rapid and easy control of the viscosity enables the magneto-rheological liquid to be developed and applied in almost all industrial and engineering fields. The prior domestic practical new magneto-rheological fluid damper. However, the damping force and initial stiffness provided by a single magnetorheological fluid damper are relatively limited, and the magnetorheological fluid damper still has a response time problem under the action of a rapid impact load. Compared with magnetorheological fluid, the shear thickening fluid is also an intelligent material with excellent performance, the difference is that the characteristic of the shear thickening fluid depends on the shear strain rate, when the shear thickening fluid bears high strain rate load, the apparent viscosity of a contact interface is changed greatly, even the shear thickening fluid is changed from a liquid phase to a solid phase, namely, shear thickening behavior occurs, and at the moment, the shear modulus of the shear thickening fluid is far larger than the initial shear modulus of the shear thickening fluid. Importantly, when the load is removed, the shear thickening fluid can be instantaneously changed from the solid phase to the liquid phase, i.e., the change is reversible. The shear thickening fluid damper protects the main structure against impact load response by utilizing the shear thickening characteristic of the shear thickening fluid, but the damping force and the rigidity of the shear thickening fluid damper are not ideal in control effect because the shear thickening fluid does not generate shear thickening action under low-speed vibration. In addition, most dampers subjected to strong vibration have damages of different degrees, and a great deal of energy and financial resources are consumed because the dampers cannot be recovered due to the damages or because the dampers are complex to install and disassemble.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the present invention provides an anti-corrosion high-flux dual-fluid damper, which has an obvious damping effect, can effectively resist wear and corrosion, can realize automatic recovery, and has a wide application range.
The utility model provides a two liquid attenuator of anticorrosive high flux, include: the damping structure comprises an outer sleeve and two damping structures which are symmetrically arranged in the outer sleeve; the damping structure includes: three magnetorheological fluid cylinders, a shear thickening fluid cylinder and a core column;
the shear thickening liquid cylinder and the outer sleeve are coaxially arranged, and the axis of the magnetorheological liquid cylinder is parallel to the axis of the outer sleeve; the large end of the core column is arranged in the shear thickening liquid cylinder, and the small end of the core column sequentially penetrates through the shear thickening liquid cylinder and a central hole in the top of the outer sleeve and extends out of the outer sleeve; the three magnetorheological fluid cylinders are arranged in the same plane and are respectively positioned at three vertexes of the equilateral triangle, and the adjacent magnetorheological fluid cylinders are connected through a first connecting piece; the bottom of the shear thickening liquid cylinder is respectively connected with the tops of the three magnetorheological liquid cylinders through a second spring and a second connecting piece in sequence; the two symmetrically arranged damping structures are connected through a first spring, and two ends of the first spring are respectively connected with the bottoms of the corresponding magnetorheological fluid cylinders; the core column of one damping structure of the two symmetrically arranged damping structures extends out of the top of the outer sleeve and is fixedly connected with the outer sleeve; magnetorheological fluid is added into the magnetorheological fluid cylinder, the inner wall of the magnetorheological fluid cylinder is provided with an excitation coil, and shear thickening fluid is added into the shear thickening fluid cylinder.
The utility model discloses an among the anticorrosive high flux biliquid attenuator, the outer sleeve is the hollow cylinder that two halfcylinders concatenations formed, the outer wall of outer sleeve is made by the FRP material.
The utility model discloses an among the anticorrosive high flux biliquid attenuator, the position that the outer sleeve inner wall corresponds every magnetic current becomes a liquid section of thick bamboo is provided with the arc wall, and the radius of arc wall is greater than the radius of a magnetic current becomes a liquid section of thick bamboo.
The utility model discloses an among the anticorrosive high flux biliquid attenuator, the inner wall of shear thickening liquid section of thick bamboo is equipped with the linear screw thread of bore of a gun to increase area of contact, shear thickening liquid bobbin base portion seals, and the top is equipped with the centre bore, supplies the tip of stem to stretch out.
The utility model discloses an among the anticorrosive high flux biliquid attenuator, the array sets up a plurality of couples on the inner wall of magnetic current becomes a liquid section of thick bamboo, and excitation coil twines on the couple that corresponds, can exert magnetic field to the attenuator is inside through outside circular telegram.
The utility model discloses an among the anticorrosive high flux biliquid attenuator, the stem outer wall is wear-resisting pottery, and the tip of stem is equipped with cylindrical hole, and the convenience is connected with the source of shaking.
In the corrosion-resistant high-flux double-fluid damper of the present invention, the first spring and the second spring are rubber springs.
The utility model discloses a two liquid dampers of anticorrosive high flux is nested formula, inner structure and outer sleeve, inner structure longitudinal symmetry, wherein add magnetorheological suspensions in the magnetorheological suspensions section of thick bamboo, add shear thickening liquid in the shear thickening liquid section of thick bamboo. The inner wall of the shear thickening liquid cylinder is provided with gun bore linear threads, so that the contact area of the inner wall and the shear thickening liquid can be increased; the inner wall of the magnetorheological fluid cylinder is provided with an excitation coil. The magnetorheological fluid can enable the magnetic particles in the magnetorheological fluid to be arranged into a chain shape along the direction of the magnetic field through an external magnetic field, the apparent viscosity is increased, once the magnetic field is removed, the fluid returns to the original Newtonian fluid state with good fluidity, and the process is extremely fast and reversible. The shear thickening liquid can be solidified under the high-speed impact, the viscosity is sharply increased, and the shear thickening liquid can be restored to be liquid after the external load is removed. When the amplitude is large and the vibration frequency is small, the damping is mainly carried out by the magnetorheological fluid, and when the amplitude is small and the vibration frequency is large, the damping is effectively carried out by the shear thickening fluid. The two can cooperate, have fine shock attenuation effect. The outer wall of the outer sleeve is made of FRP material, and the outer sleeve has the advantages of high strength, corrosion resistance, light weight and the like. In addition, the rubber spring in the structure can also play a role in vibration reduction to a certain extent, and the damper can automatically reset by means of the elasticity of the rubber spring. The damper can be applied to the aspects of shock absorbers, brake devices, aerospace and the like.
Drawings
Fig. 1 is a perspective view of a corrosion resistant high flux dual fluid damper of the present invention;
fig. 2 is an internal schematic view of a corrosion resistant high flux dual fluid damper of the present invention;
fig. 3 is a top view of a corrosion resistant high flux dual fluid damper of the present invention;
FIG. 4 is a perspective view of a shear thickening fluid cartridge of the present invention;
fig. 5 is a perspective view of the magnetorheological fluid cartridge of the present invention.
Detailed Description
As shown in fig. 1 to 5, the utility model discloses a two liquid attenuator of anticorrosive high flux, include: an outer sleeve 2 and two damping structures symmetrically arranged inside the outer sleeve 2. The damping structures which are symmetrical up and down are connected through the spring, so that the damping structure can better resist and resist vibration. The damping structure includes: three magnetorheological fluid cylinders 5, a shear thickening fluid cylinder 3 and a core column 1.
As shown in FIG. 2, the shear thickening fluid cylinder 3 and the outer sleeve 2 are coaxially arranged, and the axis of the magnetorheological fluid cylinder 5 is parallel to the axis of the outer sleeve 2. The big end of the core column 1 is arranged in the shear thickening liquid cylinder 3, and the small end of the core column sequentially penetrates through the shear thickening liquid cylinder 3 and the center hole in the top of the outer sleeve 2 and extends out of the outer sleeve 2. The three magnetorheological fluid cylinders 5 are arranged in the same plane and are respectively positioned at three vertexes of the equilateral triangle, and the adjacent magnetorheological fluid cylinders 5 are connected through a first connecting piece 8. The bottom of the shear thickening liquid cylinder 3 is respectively connected with the tops of the three magnetorheological liquid cylinders 5 through a second spring 7 and a second connecting piece 4 in sequence. The two symmetrically arranged damping structures are connected through a first spring 6, and two ends of the first spring 6 are respectively connected with the bottoms of the corresponding magnetorheological fluid cylinders 5. The stem 1 of one of the two symmetrically arranged damping structures extends out of the top of the outer sleeve 2 and is fixedly connected with the outer sleeve 2. Magnetorheological fluid is filled in the magnetorheological fluid cylinder 5, an excitation coil is arranged on the inner wall of the magnetorheological fluid cylinder 5, and shear thickening fluid is added in the shear thickening fluid cylinder 3.
The outer sleeve 2 is a hollow cylinder formed by splicing two semi-cylinders, so that the installation and the disassembly are convenient. The upper end surface and the lower end surface of the outer sleeve 2 are both provided with central holes for the core column 1 to pass through. The outer wall of the outer sleeve 2 is made of FRP material, and has the advantages of high strength, corrosion resistance, light weight and the like. The inner wall of the outer sleeve 2 is provided with an arc-shaped groove 21 corresponding to the position of each magnetorheological fluid cylinder 5, the radius of the arc-shaped groove 21 is larger than that of the magnetorheological fluid cylinder 5, and the left-right swing of the inner structure is avoided.
As shown in fig. 4, the shear thickening fluid cylinder 3 is a hollow cylinder, the inner wall of the cylinder is provided with a gun bore linear thread 31 to increase the contact area, the bottom of the shear thickening fluid cylinder 3 is closed, and the top of the cylinder is provided with a central hole for the small end of the core column 1 to extend out. The shear thickening fluid cylinder 3 is filled with shear thickening fluid which is in a liquid state when the vibration source does not vibrate or the vibration frequency is lower; when the vibration frequency is too high, the movement speed of the core column is accelerated, the shear thickening liquid on one side of the core column is forced to flow in the shear thickening liquid cylinder, and the viscous resistance generated between the shear thickening liquid and the gun bore linear threads on the inner wall of the shear thickening liquid cylinder provides output damping force for the damper.
As shown in fig. 5, a plurality of hooks 51 are arranged on the inner wall of the magnetorheological fluid cylinder 5 in an array, the excitation coil is wound on the corresponding hook 51, and a magnetic field can be applied to the inside of the damper by external energization. The three magnetorheological fluid cylinders 5 on the same plane are connected with each other through the first connecting piece 8 to form an equilateral triangle, so that the structure is more stable, and overlarge bending and twisting are avoided. The magnetorheological fluid is filled in the magnetorheological fluid cylinder 5, and is in a liquid state when the vibration source does not vibrate or the amplitude is small; when vibration with large amplitude and low frequency occurs, the magnetic field is applied to the exciting coil by electrifying, so that the magnetorheological fluid is instantly changed from a liquid state to a semi-solid state, and the vibration amplitude is reduced.
During specific implementation, the outer wall of the core column 1 is made of wear-resistant ceramic, and the small end of the core column 1 is provided with a cylindrical hole which is convenient to be connected with a vibration source. The first spring 6 and the second spring 7 are both rubber springs.
During specific implementation, the column core 1 is placed in the shear thickening liquid cylinder 3, the excitation coil is wound on the corresponding hook 51, and the three magnetorheological liquid cylinders 5 on the same plane are connected through the first connecting piece 8. And then the magnetorheological fluid cylinder 5 and the shear thickening fluid cylinder 3 are connected through a second connecting piece 4 and a second spring 7. The two ends of the second connecting piece 4 are respectively a magnetorheological fluid cylinder 5 and a second spring 7. And finally, connecting the two damping structures through a first spring 6, and splicing the two parts of outer sleeves and wrapping the internal damping structures. When the damper is used, the damper is placed at a part needing vibration reduction, and when the damper encounters vibration with large amplitude and low vibration frequency, the excitation coil is electrified and applies a magnetic field to enable magnetorheological fluid in the magnetorheological fluid cylinder to be arranged in a chain shape, so that vibration is effectively reduced; when the vibration with smaller amplitude and higher vibration frequency is encountered, the shear thickening liquid in the shear thickening liquid cylinder generates shear thickening behavior, so that the vibration is effectively reduced; when the vibration frequency is high and the amplitude is large, the two components generate synergistic action. In addition, the rifling-shaped threads on the inner wall of the shear thickening liquid cylinder can effectively increase the contact area, so that the shear thickening effect is more rapid; the wear-resistant ceramic and the FRP which are selected from the materials can resist corrosion and high temperature to a certain extent. After the vibration, the magnetic field is removed, the magnetorheological fluid and the shear thickening fluid are changed from the solid state to the liquid state, and meanwhile, the first spring 6 and the second spring 7 in the structure can restore the damping structure to a certain degree by means of the elasticity of the first spring 6 and the second spring 7.
The utility model relates to an anticorrosive high flux biliquid attenuator, this attenuator are nested formula, inner structure and outer sleeve, inner structure longitudinal symmetry, wherein add magnetorheological suspensions in the magnetorheological suspensions section of thick bamboo, add shear thickening liquid in the shear thickening liquid section of thick bamboo. The inner wall of the shear thickening liquid cylinder is of a rifling structure, so that the contact area of the inner wall and the shear thickening liquid can be increased; the inner wall of the magneto-rheological cylinder is provided with an excitation coil. The magnetorheological fluid can enable the magnetic particles in the magnetorheological fluid to be arranged into a chain shape along the direction of the magnetic field through an external magnetic field, the apparent viscosity is increased, once the magnetic field is removed, the fluid returns to the original Newtonian fluid state with good fluidity, and the process is extremely fast and reversible. The shear thickening fluid can be solidified under high-speed impact, the viscosity is sharply increased, and the shear thickening fluid can be restored to be liquid after the external load is removed. When the amplitude is large and the vibration frequency is small, the damping is mainly carried out by the magnetorheological fluid, and when the amplitude is small and the vibration frequency is large, the damping is effectively carried out by the shear thickening fluid. The two can cooperate, have fine shock attenuation effect. The damper can be applied to the aspects of shock absorbers, brake devices, aerospace and the like.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A corrosion resistant high flux two-fluid damper, comprising: the damping structure comprises an outer sleeve and two damping structures which are symmetrically arranged in the outer sleeve; the damping structure includes: three magnetorheological fluid cylinders, a shear thickening fluid cylinder and a core column;
the shear thickening liquid cylinder and the outer sleeve are coaxially arranged, and the axis of the magnetorheological liquid cylinder is parallel to the axis of the outer sleeve; the large end of the core column is arranged in the shear thickening liquid cylinder, and the small end of the core column sequentially penetrates through the shear thickening liquid cylinder and a central hole in the top of the outer sleeve and extends out of the outer sleeve; the three magnetorheological fluid cylinders are arranged in the same plane and are respectively positioned at three vertexes of the equilateral triangle, and the adjacent magnetorheological fluid cylinders are connected through a first connecting piece; the bottom of the shear thickening liquid cylinder is respectively connected with the tops of the three magnetorheological liquid cylinders through a second spring and a second connecting piece in sequence; the two symmetrically arranged damping structures are connected through a first spring, and two ends of the first spring are respectively connected with the bottoms of the corresponding magnetorheological fluid cylinders; the core column of one damping structure of the two symmetrically arranged damping structures extends out of the top of the outer sleeve and is fixedly connected with the outer sleeve; magnetorheological fluid is added into the magnetorheological fluid cylinder, the inner wall of the magnetorheological fluid cylinder is provided with an excitation coil, and shear thickening fluid is added into the shear thickening fluid cylinder.
2. The corrosion-resistant high flux double fluid damper of claim 1, wherein said outer sleeve is a hollow cylinder formed by splicing two half cylinders, and the outer wall of said outer sleeve is made of FRP material.
3. The corrosion-resistant high flux biliquid damper of claim 1, wherein said outer sleeve inner wall is provided with an arcuate slot at a location corresponding to each magnetorheological fluid cylinder, the radius of the arcuate slot being greater than the radius of the magnetorheological fluid cylinder.
4. The corrosion-resistant high flux dual fluid damper of claim 1, wherein said shear thickening fluid cylinder has a bore-shaped thread on its inner wall to increase contact area, said shear thickening fluid cylinder being closed at its bottom and having a central opening at its top for the small end of said stem to extend through.
5. The corrosion-resistant high flux biliquid damper of claim 1, wherein said magnetorheological fluid cylinder has a plurality of hooks arrayed on its inner wall, and said excitation coil is wound around the corresponding hooks to apply a magnetic field to the interior of the damper by external energization.
6. The corrosion-resistant high flux dual fluid damper of claim 1, wherein said outer wall of said stem is a wear-resistant ceramic, and said stem has a cylindrical hole at its small end for easy connection to a vibration source.
7. The corrosion-resistant, high flux dual fluid damper of claim 1, wherein said first and second springs are both rubber springs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922122640.0U CN211082664U (en) | 2019-12-02 | 2019-12-02 | Corrosion-resistant high-flux double-liquid damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922122640.0U CN211082664U (en) | 2019-12-02 | 2019-12-02 | Corrosion-resistant high-flux double-liquid damper |
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| CN211082664U true CN211082664U (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
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2019
- 2019-12-02 CN CN201922122640.0U patent/CN211082664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
| CN115163723B (en) * | 2022-08-11 | 2023-06-09 | 甘肃盛宏建筑工程有限责任公司 | Magneto-rheological variable damping vibration attenuation energy consumption device |
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