CN214578541U - Magneto-rheological rotary damper - Google Patents
Magneto-rheological rotary damper Download PDFInfo
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- CN214578541U CN214578541U CN202023001048.4U CN202023001048U CN214578541U CN 214578541 U CN214578541 U CN 214578541U CN 202023001048 U CN202023001048 U CN 202023001048U CN 214578541 U CN214578541 U CN 214578541U
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Abstract
The utility model discloses a magneto-rheological rotary damper, which comprises a sleeve component, a screw component and an electromagnetic damping component; the screw rod component is arranged inside the sleeve component; the screw rod component and the sleeve component enclose a sealing cavity, and magnetorheological fluid is filled in the sealing cavity; the electromagnetic damping component comprises a paddle and an eddy current plate; when external acting force causes the relative motion between a screw rod component and a sleeve component in the damper, the screw rod component drives a paddle to rotate, the paddle drives magnetorheological fluid in the sleeve component to flow, magnetic field change in the sleeve component is caused, induction current is generated in the eddy current plate, and the induction current causes the eddy current plate to generate heat; the magnetorheological fluid flows to assist in accelerating the heat dissipation of the damper, and the magnetorheological fluid generates viscous damping on the rotation of the paddle; the utility model discloses combine electromagnetic damping and viscidity damping advantage separately to can solve the problem that eddy current damper dispels the heat and rotatory damping is efficient low.
Description
Technical Field
The utility model relates to a structural damping technical field, in particular to magneto rheological rotary damper.
Background
The damper can provide a semi-active damping force, effectively lightens the vibration reaction of the structure and greatly improves the anti-seismic performance of the structure. However, the energy consumption of the traditional damper is not high, the control function of the traditional damper is single, the traditional damper cannot cope with different types of vibration input conditions under the limited volume, the protection function of the traditional damper is not comprehensive, and the performance requirement of the vibration control of the modern structure cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a magnetic current becomes rotary damper, can satisfy the variable damping force demand of difference.
According to an embodiment of the first aspect of the present invention, there is provided a magnetorheological rotary damper, including: a sleeve member, a screw member and an electromagnetic damping member; wherein the screw member is disposed within the sleeve member, the screw member and the sleeve member moving relative to each other; wherein the screw rod component and the cylinder body of the sleeve component form a sealing cavity in an enclosing manner, and magnetorheological fluid is arranged in the sealing cavity; the electromagnetic damping component comprises a paddle and an electric vortex plate, the electric vortex plate and the paddle are both located in the magnetorheological fluid, the paddle is connected with the screw component, the screw component drives the paddle to rotate, the paddle rotates to drive the magnetorheological fluid to flow, and magnetic induction current is generated in the electric vortex plate.
Has the advantages that: the magneto-rheological rotary damper is characterized in that the screw component is used for inducing the action of vibration force, when the screw component and the sleeve component perform relative linear motion, the screw component drives the paddle to rotate, on one hand, magneto-rheological fluid damps the rotation of the paddle, on the other hand, magneto-rheological fluid motion causes the change of a magnetic field in the sleeve component, the change of the magnetic field causes the eddy current plate to generate magnetic induction current, the magnetic induction current generates heat due to the resistance of the eddy current plate, the heat is gradually dissipated along with the moving magneto-rheological fluid, the respective advantages of the eddy current and the fluid are utilized, the problem of low heat dissipation and rotary damping efficiency of the eddy current plate can be solved, and different variable damping force requirements are met.
According to the utility model discloses the magneto rheological rotary damper of first aspect embodiment, the outer parcel of eddy current board has the insulating layer.
According to the magnetorheological rotary damper provided by the embodiment of the first aspect of the invention, the eddy current plate is arranged in the sleeve component and is perpendicular to the axial direction of the screw component.
According to the utility model discloses the magneto rheological rotary damper of first aspect embodiment, the paddle sets up the multiunit, and the electric vortex board is located between the paddle.
According to the utility model discloses magnetorheological rotary damper of first aspect embodiment, the screw rod part includes ball nut and screw rod, and the screw rod sets up ball nut along the axis extending direction of sleeve part and sets up on the screw rod, and screw drive ball nut rotates, ball nut and paddle fixed connection.
According to the utility model discloses magnetorheological rotary damper of first aspect embodiment is equipped with the bearing between ball nut and the sleeve part, and one side of bearing is equipped with the sealing member.
According to the magnetorheological rotary damper of the embodiment of the first aspect of the invention, the sealing element is a mechanical seal or an oil seal.
According to the magneto-rheological rotary damper provided by the utility model, one end of the screw rod is nested in the sleeve part, and the other end of the screw rod is provided with the first ear ring.
According to the magnetorheological rotary damper of the embodiment of the first aspect of the invention, one end of the sleeve part is provided with a hole capable of accommodating the screw rod, and the other end of the sleeve part is provided with the second earring.
According to the utility model discloses the rotary damper of magnetic current becomes of first aspect embodiment, the one end of screw rod is equipped with the stopper, is equipped with in the sleeve part with stopper complex limiting plate.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a cross-sectional view of B-B in fig. 1.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 3, a magnetorheological rotary damper includes: a sleeve member 10, a screw member and an electromagnetic damping member; wherein the screw member is arranged in the sleeve member 10, and the screw member and the sleeve member 10 can move relatively; wherein the screw rod component and the cylinder body of the sleeve component 10 enclose a sealing cavity, and magnetorheological fluid 33 is arranged in the sealing cavity; the electromagnetic damping part comprises a paddle 32 and an eddy current plate 31, the eddy current plate 31 and the paddle 32 are both positioned in magnetorheological fluid 33, the paddle 32 is connected with a screw part, the screw part drives the paddle 32 to rotate, the paddle 32 rotates to drive the magnetorheological fluid 33 to flow, the eddy current plate 31 is induced with the moving magnetorheological fluid 33, and magnetic induction current is generated in the eddy current plate 31. The magneto-rheological rotary damper is characterized in that a screw component senses the action of vibration force, when the screw component and a sleeve component 10 move linearly relatively, the screw component drives a paddle 32 to rotate, on one hand, magneto-rheological fluid 33 damps the rotation of the paddle 32, on the other hand, magneto-rheological fluid 33 moves to cause the change of a magnetic field in the sleeve component 10, the change of the magnetic field causes an eddy current plate 31 to generate magnetic induction current, the magnetic induction current generates heat due to the resistance of the eddy current plate 31, the heat is gradually dissipated along with the moving magneto-rheological fluid 33, the respective advantages of eddy current and fluid damping are utilized, the problems of low heat dissipation and low rotary damping efficiency of the eddy current plate 31 can be solved, and different variable damping force requirements are met.
In the present embodiment, the magnetorheological fluid 33 is a suspension in which fine soft magnetic particles having a high magnetic permeability and a low magnetic hysteresis are mixed with a non-magnetic conductive liquid. The eddy current plate 31 is a plate member having a certain resistance.
In this embodiment, in order to ensure safety and avoid electric leakage, the eddy current plate 31 is fixed on the fixing seat 34, and the insulating layer is wrapped outside the eddy current plate 31, and the insulating layer is arranged to ensure that current is consumed in the eddy current plate 31.
In the present embodiment, the eddy current plate 31 is disposed inside the sleeve member 10, specifically, vertically, and the eddy current plate 31 is perpendicular to the axial direction of the screw member. Preferably, a plurality of groups of blades 32 can be arranged, and the eddy current plate 31 is positioned between the blades 32, so that the conversion efficiency of electric energy and heat is improved, and the damping force is increased. Specifically, the blades 32 are parabolic and have good radial displacement and dispersion capability.
In the present embodiment, the screw member includes a ball nut 22 and a screw 21, the screw 21 is disposed along the axial extension direction of the sleeve member 10, the ball nut 22 is disposed on the screw 21, the screw 21 drives the ball nut 22 to rotate, the ball nut 22 is fixedly connected to the paddles 32, and the paddles 32 are disposed on the side wall of the ball nut 22 in a circumferential array around the central axis of the ball nut 22.
In the present embodiment, a bearing 41 is provided between the ball nut 22 and the sleeve member 10, and a seal 40 is provided on one side of the bearing 41. Specifically, two sets of bearings 41 and two sets of sealing members 40 are provided, the two sets of bearings 41 are respectively provided on the ball nut 22 and located in both sides of the sleeve member 10, and the two sets of sealing members 40 are respectively provided at the two sets of bearings 41. Preferably, the seal 40 is a mechanical or oil-tight seal.
In the present embodiment, one end of the screw 21 is nested in the sleeve member 10, and the other end of the screw 21 is provided with a first ear ring 23. One end of the sleeve member 10 is provided with a bore capable of receiving the screw 21 and the other end of the sleeve member 10 is provided with a second ear 12. The first earring 23 and the second earring 12 are used for attachment to a structure to secure installation and positioning.
In this embodiment, a stopper 211 is disposed at one end of the screw 21, and a stopper plate 11 engaged with the stopper 211 is disposed in the sleeve member 10. The movement stroke of the screw 21 is limited, and the failure of the magnetorheological rotary damper is avoided.
In the present embodiment, the cross-sectional shape of the sleeve member 10 is approximately "T" shaped, facilitating accommodation of the screw 21, the eddy plate 31 and the paddle 32 at the same time.
When the magnetorheological rotary damper generates relative linear motion with a screw rod part through the sleeve part 10, the ball nut 22 drives the two groups of blades 32 to rotate, as a sealed cavity enclosed by the bearing 41, the screw rod part and a cylinder body of the sleeve part 10 is filled with magnetorheological fluid 33, the two groups of blades 32 and the eddy current plate 31 are both soaked in the magnetorheological fluid 33, according to the fluid mechanics principle, the magnetorheological fluid 33 can generate damping on the rotation of the blades 32, the damping is related to the viscosity and the density of the magnetorheological fluid 33 and the rotating speed of the blades 32, and the requirements of different damping forces can be met by adjusting the viscosity and the density of the magnetorheological fluid 33; furthermore, the rotation of the paddle 32 drives the magnetorheological fluid 33 to move, the magnetorheological fluid 33 moves to cause the magnetic field change in the sleeve part 10, according to the electromagnetic principle, the magnetic field change causes the eddy current plate 31 to generate magnetic induction current, the magnetic induction current generates heat due to the resistance of the eddy current plate 31, the heat is dissipated through the moving magnetorheological fluid 33, the respective advantages of eddy current and fluid damping are utilized, the problem of low heat dissipation and rotary damping efficiency of the eddy current plate 31 can be solved, and the requirements of different variable damping forces are met.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A magnetorheological rotational damper, comprising: a sleeve member, a screw member and an electromagnetic damping member;
wherein the screw member is disposed within the sleeve member, the screw member and the sleeve member being relatively movable;
the screw rod component and the cylinder body of the sleeve component enclose a sealed cavity, and magnetorheological fluid is arranged in the sealed cavity;
the electromagnetic damping component comprises a paddle and an eddy current plate, the eddy current plate and the paddle are both located in the magnetorheological fluid, the paddle is fixedly connected with the screw component, the screw component drives the paddle to rotate, the paddle rotates to drive the magnetorheological fluid to flow, and magnetic induction current is generated in the eddy current plate.
2. The magnetorheological rotational damper of claim 1, wherein: the eddy current plate is wrapped by an insulating layer.
3. The magnetorheological rotational damper of claim 1, wherein: the eddy current plate is arranged in the sleeve part and is perpendicular to the axial direction of the screw part.
4. The magnetorheological rotational damper of claim 3, wherein: the blades are provided with a plurality of groups, and the electric vortex plate is arranged between the blades.
5. The magnetorheological rotational damper of claim 3, wherein: the screw component comprises a ball nut and a screw, the screw is arranged along the axial direction of the sleeve component, the ball nut is nested outside the screw, the screw drives the ball nut to rotate, and the ball nut is fixedly connected with the paddle.
6. The magnetorheological rotational damper of claim 5, wherein: and a bearing is arranged between the ball nut and the sleeve part, and a sealing element is arranged on one side of the bearing.
7. The magnetorheological rotational damper of claim 6, wherein: the sealing element is a mechanical seal or an oil seal.
8. The magnetorheological rotational damper of claim 5, wherein: one end of the screw rod is nested in the sleeve part, and the other end of the screw rod is provided with a first lug ring.
9. The magnetorheological rotational damper of claim 8, wherein: one end of the sleeve part is provided with a hole capable of accommodating the screw rod, and the other end of the sleeve part is provided with a second earring.
10. The magnetorheological rotational damper of claim 9, wherein: and a limiting block is arranged at one end of the screw rod, and a limiting plate matched with the limiting block is arranged in the sleeve part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023001048.4U CN214578541U (en) | 2020-12-14 | 2020-12-14 | Magneto-rheological rotary damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023001048.4U CN214578541U (en) | 2020-12-14 | 2020-12-14 | Magneto-rheological rotary damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578541U true CN214578541U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023001048.4U Active CN214578541U (en) | 2020-12-14 | 2020-12-14 | Magneto-rheological rotary damper |
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| Country | Link |
|---|---|
| CN (1) | CN214578541U (en) |
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2020
- 2020-12-14 CN CN202023001048.4U patent/CN214578541U/en active Active
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