CN214367456U - Magnetorheological damper with limiting function based on permanent magnet - Google Patents
Magnetorheological damper with limiting function based on permanent magnet Download PDFInfo
- Publication number
- CN214367456U CN214367456U CN202120141440.4U CN202120141440U CN214367456U CN 214367456 U CN214367456 U CN 214367456U CN 202120141440 U CN202120141440 U CN 202120141440U CN 214367456 U CN214367456 U CN 214367456U
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- Prior art keywords
- damper
- cover plate
- magnetorheological fluid
- attenuator
- permanent magnet
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- 239000012530 fluid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a magnetorheological damper with limiting function based on permanent magnet, which comprises an upper damper cover plate and a lower damper cover plate, wherein a damper limiting block is welded on the inner side wall of the external structure of the damper, a gap is reserved between the damper limiting block and a damper shell, a damper coil is wound in the gap, and a sealed cavity is divided into two equal-volume cavities by the damper limiting block; the center of the external structure of the damper is provided with a rotatable damper rotating shaft, damper rotors are symmetrically and fixedly arranged on the damper rotating shaft and are symmetrically arranged in two isometric cavities, a fan-shaped annular magnetorheological fluid channel is arranged inside the damper rotors, permanent magnets are embedded on the damper rotors and are arranged at intervals with the fan-shaped annular magnetorheological fluid channel, and a magnetorheological fluid filling gap is arranged between the damper rotors and a damper limiting block. The device has limit function, can prevent the attenuator from taking place too big displacement, the security when guaranteeing the attenuator use.
Description
Technical Field
The utility model relates to a attenuator technical field for power consumption especially relates to a magnetorheological damper based on permanent magnet has limit function.
Background
The damper is a common energy consumption element and is widely applied to the fields of machinery, civil engineering and the like; the magneto-rheological damper has the advantage of adjustable and controllable damping performance, and is very suitable for the field of active or semi-active control. With appropriate control systems, magnetorheological dampers have been used in medical, mechanical, civil, and other applications, such as smart prosthetics, smart car suspensions, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of prior art, provide a magnetorheological damper who has limit function based on the permanent magnet. The damper is simple in structure and easy to process and install, the magnetorheological damper has a limiting function, and can prevent the damper from generating overlarge displacement and ensure the safety of the damper in use.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a magnetorheological damper that has limit function based on permanent magnet, including attenuator upper cover plate and attenuator lower cover plate, attenuator upper cover plate and attenuator lower cover plate constitute the attenuator exterior structure by the attenuator shell as connecting portion is sealed together, form seal chamber between attenuator upper cover plate and the attenuator lower cover plate, the welding has the attenuator stopper on the inside wall of attenuator exterior structure, and the attenuator stopper is centrosymmetric segment, reserves the space between attenuator stopper and the attenuator shell, and the winding has the attenuator coil in the space, and the thickness of segment equals with the clearance height between attenuator upper cover plate and the attenuator lower cover plate, and the attenuator stopper divides seal chamber into two isometric cavities; a rotatable damper rotating shaft is arranged in the center of the external structure of the damper, damper rotors are symmetrically and fixedly arranged on the damper rotating shaft and are centrally symmetric fan-shaped blocks, the damper rotors are symmetrically arranged in two isometric cavities, a fan-shaped annular magnetorheological fluid channel is arranged in each damper rotor, a permanent magnet is embedded in each damper rotor, and the permanent magnets and the fan-shaped annular magnetorheological fluid channels are arranged at intervals; a magnetorheological fluid filling hole is reserved in the upper cover plate of the damper, a blocking structure is arranged on the magnetorheological fluid filling hole, a magnetorheological fluid filling gap is arranged between the damper rotor and the damper limiting block, and magnetorheological fluid is arranged in the magnetorheological fluid filling gap.
The damper coil is a copper coil.
The upper damper cover plate, the damper shell and the lower damper cover plate are connected through fastening bolts.
And a sealing ring is arranged between the damper external structure and the damper rotating shaft.
The plugging structure is a fastening bolt and is provided with a sealing ring.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the damper in the device has a simple structure and is easy to process and install.
2. The permanent magnet is arranged in the damper in the device, so that considerable initial damping can be provided for the damper, the sedimentation of magnetorheological fluid in the damper is prevented, and the adjustable range of the performance of the damper is enlarged.
3. The magneto-rheological damper in the device has a limiting function, can prevent the damper from generating overlarge displacement and ensures the safety of the damper in use.
Drawings
Fig. 1 is a schematic structural view of a magnetorheological damper with a limiting function based on a permanent magnet according to the present invention;
FIG. 2 is a schematic view of a structure in partial cross-section;
in the figure: the damper comprises an upper damper cover plate 1, a lower damper cover plate 2, an outer damper structure 3, a damper rotating shaft 4, a damper rotor 5, an annular magnetorheological fluid channel 6, a permanent magnet 7, a blocking structure 8, a magnetorheological fluid filling gap 9, fastening bolts 10, a damper shell 11, a damper coil 12 and a sealed cavity 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, the utility model provides a magnetorheological damper with a limit function based on permanent magnet, which comprises an upper damper cover plate 1 and a lower damper cover plate 2, wherein the upper damper cover plate 1 and the lower damper cover plate 2 are sealed together by a damper shell 11 as a connecting part to form an external damper structure 3, a sealed cavity 13 is formed between the upper damper cover plate 1 and the lower damper cover plate 2, the damper outer structure comprises a damper outer structure 3, a damper limiting block, a damper coil 12, a copper wire coil, a sealing cavity 13 and a damper shell 11, wherein the inner side wall of the damper outer structure 3 is welded with the damper limiting block, the damper limiting block is a central symmetrical fan-shaped block, a gap is reserved between the damper limiting block and the damper shell 11, the damper coil 12 is wound in the gap, the thickness of the fan-shaped block is equal to the height of a gap between the damper upper cover plate 1 and the damper lower cover plate 2, and the damper limiting block divides the sealing cavity 13 into two equal-volume cavities; a rotatable damper rotating shaft 4 is arranged in the center of the damper external structure 3, damper rotors 5 are symmetrically and fixedly arranged on the damper rotating shaft 4, the damper rotors 5 are centrally symmetrical fan-shaped blocks, the damper rotors 5 are symmetrically arranged in two isometric cavities, a fan-shaped annular magnetorheological fluid channel 6 is arranged inside the damper rotors 5, a permanent magnet 7 is embedded on the damper rotors 5, and the permanent magnet 7 and the fan-shaped annular magnetorheological fluid channel 6 are arranged at intervals; the magnetorheological fluid damper is characterized in that a magnetorheological fluid filling hole is reserved in the upper damper cover plate 1, a blocking structure 8 is arranged on the magnetorheological fluid filling hole and is provided with a sealing ring, the blocking structure 8 is a fastening bolt, a magnetorheological fluid filling gap 9 is formed between the damper rotor 5 and the damper limiting block, and magnetorheological fluid is arranged in the magnetorheological fluid filling gap 9.
In order to facilitate the disassembly and assembly of the structure, the damper upper cover plate 1, the damper shell 11 and the damper lower cover plate 2 are connected through fastening bolts 10.
In order to prevent the magnetorheological fluid from leaking, a sealing ring is arranged between the damper outer structure 3 and the damper rotating shaft 4.
The device installation method comprises the following steps: the damper shell, the upper damper cover plate and the lower damper cover plate are respectively machined, and the damper shell, the upper damper cover plate and the lower damper cover plate are fixed together through fastening bolts when the damper is assembled; the damper limiting block and the damper external structure are directly welded together during processing; the damper rotor and the damper rotating shaft are welded together, and meanwhile, when the damper rotor is machined, a magnetorheological fluid channel is machined, and the installation position of a permanent magnet is reserved; winding a damper coil according to a space between the damper shell and the damper rotor; and reserving a magnetorheological fluid filling hole on the external structure of the damper and the part overlapped with the magnetorheological fluid cavity.
After being processed, the components of the damper are assembled into the damper, and sealing rings are arranged at all gaps to prevent magnetorheological fluid from leaking; after the damper is assembled, the damper is filled with magnetorheological fluid from the magnetorheological fluid filling hole, then the damper is vacuumized, air in the damper is exhausted, and then the magnetorheological fluid filling hole is sealed by a fastening bolt, so that the assembly and sealing work of the damper is completed.
The working principle is as follows:
when the damper works, the damper rotating shaft and the damper external structure rotate relatively, the damper rotor is driven to move in the damper, and at the moment, magnetorheological fluid in the magnetorheological fluid cavity is extruded and flows to the magnetorheological fluid cavity on the other side through the magnetorheological fluid channel; when flowing through the channel, the magnetorheological fluid is under the action of resistance, so that the damping is output to the outside; the aim of adjusting the damping performance of the damper is achieved by adjusting the resistance of the magnetorheological fluid flowing through the channel.
The damper coil and the permanent magnet can generate a magnetic field at the magnetorheological fluid channel, and the magnetorheological fluid is acted by the magnetic field to generate damping force when flowing through the magnetorheological fluid channel; the resistance of the magnetorheological fluid flowing through the magnetorheological fluid is changed by adjusting the magnetic field at the channel.
When the direction of the magnetic field generated by the damper coil is the same as that of the magnetic field generated by the permanent magnet, the resistance of the magnetorheological fluid flowing through the channel is increased, and the damping force of the damper is further increased; when the direction of the magnetic field generated by the damper coil is opposite to that of the magnetic field generated by the permanent magnet, the resistance of the magnetorheological fluid flowing through the channel is reduced, and the damping force of the damper is further reduced.
The damper limiting block is fixed with the outer structure of the damper, and when the rotation angle of the damper rotor is too large, the damper limiting block is in contact with the limiting block, the limiting block can prevent the rotor from continuing to move, and the purpose of preventing the damper from rotating and displacing too large is achieved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a magnetorheological damper based on permanent magnet has limit function, apron (2) under including attenuator upper cover plate (1) and attenuator, apron (2) constitute attenuator exterior structure (3) by the sealed constitution of connecting portion together of attenuator shell (11) under attenuator upper cover plate (1) and the attenuator, form seal chamber (13) between apron (2) under attenuator upper cover plate (1) and the attenuator, its characterized in that: the damper limiting block is welded on the inner side wall of the damper external structure (3), the damper limiting block is a central symmetrical fan-shaped block, a gap is reserved between the damper limiting block and the damper shell (11), a damper coil (12) is wound in the gap, the thickness of the fan-shaped block is equal to the height of the gap between the damper upper cover plate (1) and the damper lower cover plate (2), and the damper limiting block divides the sealed cavity (13) into two equal-volume cavities; a rotatable damper rotating shaft (4) is arranged in the center of the damper external structure (3), damper rotors (5) are symmetrically and fixedly arranged on the damper rotating shaft (4), the damper rotors (5) are centrosymmetric fan-shaped blocks, the damper rotors (5) are symmetrically arranged in two isometric cavities, a fan-shaped annular magnetorheological fluid channel (6) is formed in the damper rotors (5), a permanent magnet (7) is embedded in the damper rotors (5), and the permanent magnet (7) and the fan-shaped annular magnetorheological fluid channel (6) are arranged at intervals; a magnetorheological fluid filling hole is reserved in the upper cover plate (1) of the damper, a blocking structure (8) is arranged on the magnetorheological fluid filling hole, a magnetorheological fluid filling gap (9) is arranged between the damper rotor (5) and the damper limiting block, and magnetorheological fluid is arranged in the magnetorheological fluid filling gap (9).
2. The magnetorheological damper based on the permanent magnet and having the limiting function as claimed in claim 1, wherein: the damper coil (12) is a copper coil.
3. The magnetorheological damper based on the permanent magnet and having the limiting function as claimed in claim 1, wherein: the upper damper cover plate (1), the damper shell (11) and the lower damper cover plate (2) are connected through fastening bolts (10).
4. The magnetorheological damper based on the permanent magnet and having the limiting function as claimed in claim 1, wherein: and a sealing ring is arranged between the damper external structure (3) and the damper rotating shaft (4).
5. The magnetorheological damper based on the permanent magnet and having the limiting function as claimed in claim 1, wherein: the blocking structure (8) is a fastening bolt and is provided with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120141440.4U CN214367456U (en) | 2021-01-19 | 2021-01-19 | Magnetorheological damper with limiting function based on permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120141440.4U CN214367456U (en) | 2021-01-19 | 2021-01-19 | Magnetorheological damper with limiting function based on permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367456U true CN214367456U (en) | 2021-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120141440.4U Expired - Fee Related CN214367456U (en) | 2021-01-19 | 2021-01-19 | Magnetorheological damper with limiting function based on permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877009A (en) * | 2022-05-16 | 2022-08-09 | 郑州大学 | Intelligent magnetorheological damper with anti-settling function and method for controlling damping force output |
| CN115417270A (en) * | 2022-08-29 | 2022-12-02 | 南通鸿图橡塑有限公司 | High-elasticity elevator damper and using method thereof |
-
2021
- 2021-01-19 CN CN202120141440.4U patent/CN214367456U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877009A (en) * | 2022-05-16 | 2022-08-09 | 郑州大学 | Intelligent magnetorheological damper with anti-settling function and method for controlling damping force output |
| CN114877009B (en) * | 2022-05-16 | 2024-02-23 | 郑州大学 | Intelligent magnetorheological damper with anti-sedimentation function and method for controlling damping force output |
| CN115417270A (en) * | 2022-08-29 | 2022-12-02 | 南通鸿图橡塑有限公司 | High-elasticity elevator damper and using method thereof |
| CN115417270B (en) * | 2022-08-29 | 2023-09-12 | 南通鸿图橡塑有限公司 | High-elasticity elevator damper and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |