CN208858850U - A kind of MR damper with vibration automatic damping adjusting gap - Google Patents
A kind of MR damper with vibration automatic damping adjusting gap Download PDFInfo
- Publication number
- CN208858850U CN208858850U CN201821618107.2U CN201821618107U CN208858850U CN 208858850 U CN208858850 U CN 208858850U CN 201821618107 U CN201821618107 U CN 201821618107U CN 208858850 U CN208858850 U CN 208858850U
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- China
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- damper
- end cap
- winding frame
- right end
- coil winding
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- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a kind of MR dampers with vibration automatic damping adjusting gap, are mainly made of adjustment spring, piston rod, attenuator end cap, damper cylinder body, adjustment bar, piston bore, coil winding frame and magnet exciting coil etc..The MR damper coil winding frame and piston bore are processed into special construction, and the effective damping gap for surrounding it and horizontal direction are in 30 degree of angles.In compression process, internal liquid compression shock coil winding frame right end pushes adjustment bar level to move downward, adjusts spring-compressed, increases effective damping gap；In drawing process, internal liquid compression shock coil winding frame left end pushes adjustment bar to move horizontally to the right, adjusts spring elongation, make effective damping gap shrinks.The damping force that the utility model MR damper compression process generates is greater than the damping force that drawing process generates, and is highly suitable for stretching the application different with compression condition.
Description
Technical field
The utility model relates to a kind of MR damper more particularly to a kind of magnetic with vibration automatic damping adjusting gap
Rheological damper.
Background technique
MR damper has Millisecond response speed, big control range as a kind of novel semi- active control element
The features such as with big output damping force, so that it becomes half outstanding active actuators part of industrial application.Currently, magnetic current variable resistance
Buddhist nun's device is widely used in the vibration damping etc. of vibration damping vibration prevention system, rail vehicles and the automobile suspension system of building and bridge
Aspect.
Designed MR damper magnet exciting coil is often wrapped in piston head toroidal cavity at present, while in piston
Circular ring shape fluid course is arranged in the internal setting circular ring shape fluid course of head between outer surface of piston and inner surface of cylinder block.Work
When making, magnetorheological fluid is flowed in circular ring shape fluid course, is generated in circular ring shape fluid course perpendicular to magnetic when magnet exciting coil is powered
The magnetic field of rheology liquid flow direction generates output damping force under magnetic fields.
In engineer application, MR damper is often needed to generate damping force of different sizes in compression and drawing process,
It is utilized in the mode for inputting electric current of different sizes in compression process and drawing process to magnet exciting coil under normal conditions, still
Which control system is complicated, and frequently changes electric current and will lead to MR damper temperature rise aggravation.
Summary of the invention
In order to solve the problems, such as background technique, the utility model proposes one kind with vibration automatic damping adjusting gap
MR damper.The MR damper coil winding frame and piston bore are processed into special construction, make what it surrounded to have
It imitates damping clearance and horizontal direction is in 30 degree of angles.In compression process, internal liquid compression shock coil winding frame right end is pushed
Adjustment bar level moves downward, and adjusts spring-compressed, increases effective damping gap；In drawing process, the punching of internal liquid pressure
Coil winding frame left end is hit, pushes adjustment bar to move horizontally to the right, adjusts spring elongation, make effective damping gap shrinks.This reality
It is greater than the damping force that drawing process generates with the damping force that Novel magneto-rheological damper compression process generates, is highly suitable for stretching
The application different with compression condition.
The utility model solves technical solution used by its technical problem and includes: left hanging ring (1), adjustment spring (2), lives
Stopper rod (3), damper cylinder body (5), adjustment bar (6), piston bore (7), coil winding frame (8), floats at damper left end cap (4)
Piston (9), counterbalance spring (10), right hanging ring (11), damper right end cap (12), locking nut (13), magnet exciting coil (14)；
Left hanging ring (1) is threadably secured with piston rod (3) to be connect；Circular through hole, piston rod are machined among damper left end cap (4)
(3) cooperate with damper left end cap (4) circular through hole internal surface gaps, and be sealed by a seal ring；Damper left end cap
(4) it with damper cylinder body (5) left side clearance fit, and is sealed by a seal ring；Damper left end cap (4) and damper
Cylinder body (5) is fixedly connected by screw；Circular through hole is machined among piston rod (3), adjustment bar (6) and piston rod (3) are round
Through-hole inner surface clearance fit, and sealed by sealing ring；Circular counter bore is machined among left hanging ring (1), adjustment spring (2) is left
End and left hanging ring (1) circular counter bore clearance fit, adjustment spring (2) right end are contacted with adjustment bar (6) left end；Piston bore (7)
It is threadably secured and connect with piston rod (3)；Piston bore (7) carries out axially position by the shaft shoulder on the right side of piston rod (3)；Line
Circular through hole, circular through hole inner surface and adjustment bar (6) outer surface interference fit are machined among circle bobbin winder bracket (8)；Coil around
Coil holder (8) carries out axially position by adjusting the shaft shoulder on the right side of bar (6)；Adjustment bar (6) right end is machined with external screw thread, coil-winding
Frame (8) is fastenedly connected by locking nut (13) and adjustment bar (6)；Coil winding frame (8) outer surface and piston bore (7) interior table
The gap surrounded between face constitutes magnetorheological fluid and flows through channel；Coil winding frame (8) is machined with winding slot, and magnet exciting coil (14) twines
It is wound in coil winding frame (8)；The lead of magnet exciting coil (14) passes through the wire lead slot and piston rod (3) on coil winding frame (8)
Fairlead draw；Floating piston (9) outer surface and damper cylinder body (5) internal surface gaps cooperate, and are carried out by sealing ring
Sealing；Circular counter bore, counterbalance spring (10) left end and damper right end cap (12) circle are machined among damper right end cap (12)
Shape counterbore clearance fit, counterbalance spring (10) right end and floating piston (9) right end face contact；Damper right end cap (12) and damping
Device cylinder body (5) right end clearance fit, and be sealed by a seal ring；Damper right end cap (12) and damper cylinder body (5) are logical
Screw is crossed to be fixedly connected；Damper right end cap (12) is threadably secured with right hanging ring (11) and connect.
The utility model compared with the background art, has the beneficial effect that
(1) the utility model MR damper coil winding frame and piston bore are processed into special construction, surround it
Effective damping gap and horizontal direction be in 30 degree of angles.In piston compression process, internal liquid compression shock coil winding frame
Right end pushes adjustment bar level to move downward, adjusts spring-compressed, increases effective damping gap；In drawing process, internal liquid
Flowing pressure kicker coil bobbin winder bracket left end pushes adjustment bar to move horizontally to the right, adjusts spring elongation, effective damping gap is made to contract
It is small.
(2) the utility model MR damper is compact-sized, and the damping force that compression process generates is produced greater than drawing process
Raw damping force is highly suitable for stretching the application different with compression condition.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model magnet exciting coil magnetic line of force distribution schematic diagram.
Fig. 3 is that coil-winding rack position and magnetorheological fluid flow through fluid course signal when the utility model piston rod stretches
Figure.
Coil-winding rack position and magnetorheological fluid flow through fluid course signal when Fig. 4 is the compression of the utility model piston rod
Figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 show the utility model structure diagram.It mainly include left hanging ring 1, adjustment spring 2, piston rod 3, damping
Device left end cap 4, damper cylinder body 5, adjustment bar 6, piston bore 7, coil winding frame 8, floating piston 9, counterbalance spring 10, the right side are hung
Ring 11, damper right end cap 12, locking nut 13 and magnet exciting coil 14.
Fig. 2 is the utility model magnet exciting coil magnetic line of force distribution schematic diagram.What coil winding frame 8 and piston bore 7 were formed
Fluid course middle section is horizontal direction, and the left and right sides and horizontal direction are in 30 degree of angles.When being powered to magnet exciting coil 14,
The magnetic field that magnet exciting coil 14 generates forms closed circuit by coil winding frame 8 and piston bore 7.
Fig. 3 show coil-winding rack position and magnetorheological fluid when the utility model piston rod stretches and flows through fluid course and show
It is intended to.When 3 in axial direction Tensile of piston rod, closes magnetorheological fluid in cavity I and flow through fluid course 15 into closing appearance
Chamber II, 8 left end of flow stream pressure kicker coil bobbin winder bracket make to adjust the stretching of spring 2, and coil winding frame 8 is subjected to displacement to the right, makes to have
Damping clearance is imitated to reduce.
Coil-winding rack position and magnetorheological fluid flow through fluid course and show when Fig. 4 show the compression of the utility model piston rod
It is intended to.When piston rod 3 is in axial direction compressed, closes magnetorheological fluid in cavity II and flow through fluid course 15 into closing appearance
Chamber I, 8 right end of flow stream pressure kicker coil bobbin winder bracket make to adjust the compression of spring 2, and coil winding frame 8 is subjected to displacement to the left, makes to have
Damping clearance is imitated to expand.
Utility model works principle is as follows:
The magnetic line of force that magnet exciting coil 14 generates forms closed circuit by coil winding frame 8 and piston bore 7.The magnetic line of force is logical
Cross the damping clearance formed by piston bore 7 and coil winding frame 8.Due to magnetic fields, magnetorheological fluid at fluid course its
Viscosity will increase, yield stress enhancing.Magnetorheological fluid flows through the damping clearance, need to overcome the intermolecular of this catenation
Power, to increase the viscous damping force of MR damper.
In compression process, internal liquid compression shock coil winding frame right end pushes adjustment bar level to move downward, adjusts
Spring-compressed increases effective damping gap；In drawing process, internal liquid compression shock coil winding frame left end pushes and adjusts
Whole bar moves horizontally to the right, adjusts spring elongation, makes effective damping gap shrinks.
Claims (1)
1. a kind of MR damper with vibration automatic damping adjusting gap, characterized by comprising: left hanging ring (1), adjustment
Spring (2), piston rod (3), damper left end cap (4), damper cylinder body (5), adjustment bar (6), piston bore (7), coil around
Coil holder (8), counterbalance spring (10), right hanging ring (11), damper right end cap (12), locking nut (13), is encouraged at floating piston (9)
Magnetic coil (14)；Left hanging ring (1) is threadably secured with piston rod (3) to be connect；Circle is machined among damper left end cap (4)
Through-hole, piston rod (3) and damper left end cap (4) circular through hole internal surface gaps cooperate, and are sealed by a seal ring；Resistance
Buddhist nun's device left end cap (4) and damper cylinder body (5) left side clearance fit, and be sealed by a seal ring；Damper left end cap
(4) it is fixedly connected with damper cylinder body (5) by screw；It is machined with circular through hole among piston rod (3), adjusts bar (6) and living
The cooperation of stopper rod (3) circular through hole internal surface gaps, and sealed by sealing ring；It is machined with circular counter bore among left hanging ring (1), is adjusted
Whole spring (2) left end and left hanging ring (1) circular counter bore clearance fit, adjustment spring (2) right end are contacted with adjustment bar (6) left end；
Piston bore (7) is threadably secured with piston rod (3) and connect；Piston bore (7) is carried out by the shaft shoulder on the right side of piston rod (3)
Axially position；Circular through hole, circular through hole inner surface and adjustment bar (6) outer surface interference are machined among coil winding frame (8)
Cooperation；Coil winding frame (8) carries out axially position by adjusting the shaft shoulder on the right side of bar (6)；Adjustment bar (6) right end is machined with outer spiral shell
Line, coil winding frame (8) are fastenedly connected by locking nut (13) and adjustment bar (6)；Coil winding frame (8) is machined with coiling
Slot, magnet exciting coil (14) are wrapped in coil winding frame (8)；The lead of magnet exciting coil (14) passes through on coil winding frame (8)
The fairlead of wire lead slot and piston rod (3) is drawn；Floating piston (9) outer surface and damper cylinder body (5) internal surface gaps cooperate,
And it is sealed by a seal ring；Circular counter bore, counterbalance spring (10) left end and resistance are machined among damper right end cap (12)
Buddhist nun's device right end cap (12) circular counter bore clearance fit, counterbalance spring (10) right end and floating piston (9) right end face contact；Damper
Right end cap (12) and damper cylinder body (5) right end clearance fit, and be sealed by a seal ring；Damper right end cap (12) with
Damper cylinder body (5) is fixedly connected by screw；Damper right end cap (12) is threadably secured with right hanging ring (11) and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821618107.2U CN208858850U (en) | 2018-10-03 | 2018-10-03 | A kind of MR damper with vibration automatic damping adjusting gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821618107.2U CN208858850U (en) | 2018-10-03 | 2018-10-03 | A kind of MR damper with vibration automatic damping adjusting gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208858850U true CN208858850U (en) | 2019-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821618107.2U Expired - Fee Related CN208858850U (en) | 2018-10-03 | 2018-10-03 | A kind of MR damper with vibration automatic damping adjusting gap |
Country Status (1)
| Country | Link |
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| CN (1) | CN208858850U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022555A (en) * | 2019-12-23 | 2020-04-17 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN114017467A (en) * | 2021-11-18 | 2022-02-08 | 中国科学技术大学 | Magneto-rheological damper with negative rigidity characteristic |
| CN114791028A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Damping clearance adjustable embeds valve formula magnetic current becomes attenuator |
| CN114791025A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Mixed damping gap adjustable valve type magnetorheological damper |
-
2018
- 2018-10-03 CN CN201821618107.2U patent/CN208858850U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022555A (en) * | 2019-12-23 | 2020-04-17 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN111022555B (en) * | 2019-12-23 | 2021-03-02 | 哈工大机电工程(嘉善)研究院 | Novel high-speed impact magneto-rheological damper with adjustable damping channel gap |
| CN114791028A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Damping clearance adjustable embeds valve formula magnetic current becomes attenuator |
| CN114791025A (en) * | 2021-10-11 | 2022-07-26 | 广西科技大学 | Mixed damping gap adjustable valve type magnetorheological damper |
| CN114791028B (en) * | 2021-10-11 | 2023-10-24 | 广西科技大学 | Damping gap adjustable built-in valve type magnetorheological damper |
| CN114017467A (en) * | 2021-11-18 | 2022-02-08 | 中国科学技术大学 | Magneto-rheological damper with negative rigidity characteristic |
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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: 20190514 Termination date: 20201003 |