CN208381187U - A kind of parallel MR damper with multistage effective damping length - Google Patents
A kind of parallel MR damper with multistage effective damping length Download PDFInfo
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- CN208381187U CN208381187U CN201821084279.6U CN201821084279U CN208381187U CN 208381187 U CN208381187 U CN 208381187U CN 201821084279 U CN201821084279 U CN 201821084279U CN 208381187 U CN208381187 U CN 208381187U
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- piston rod
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- 238000013016 damping Methods 0.000 title claims abstract description 74
- 239000012530 fluid Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a kind of parallel MR dampers with multistage effective length, mainly by piston rod, attenuator end cap, damper cylinder body, piston head, draw magnetosheath ring, resistance magnetosheath ring, magnetic conduction disk and floating piston etc. and form.Axial annulus damp channel and radial disk damping channel, intermediate damping hole path form 2 parallel-connection type hydraulic circulation roads that magnetorheological fluid flows through.Hindering magnetosheath ring and drawing magnetosheath ring makes axial annulus damp channel effective, greatly improves effective damping length.Under magnetic fields, 4 sections of effective damping gaps are formed between built-up piston head, magnetic conduction disk and cylinder body.When being powered to magnet exciting coil, the magnetorheological fluid yield stress in 4 sections of effective damping gaps increases, to increase output damping force.The utility model increases output damping force under the premise of not increasing overall dimension, through 2 parallel-connection type hydraulic circulation roads and 4 sections of effective damping gaps, the vibration insulating system especially suitable for industries such as traffic, railways.
Description
Technical field
The utility model relates to a kind of MR damper more particularly to a kind of parallel connections with multistage effective damping length
Formula MR damper.
Background technique
MR damper is half active intelligent vibration damper made of the magnetic rheology effect using magnetorheological fluid.Magnetic current variable resistance
Buddhist nun's device has many advantages, such as to export big damping force, continuous controllable reversible and fast response time.Currently, MR damper is answered extensively
Used in the vibration damping vibration prevention system of building and bridge, rail vehicles and vibration damping of automobile suspension system etc..
Traditional MR damper by winding one group of excitation coil on built-in piston head, be passed through electric current can produce it is vertical
Directly in the magnetic line of force of axial annulus damping clearance.It can be adjusted using magnetorheological fluid principle by changing field coil current size
The magnetic induction intensity at MR damper fluid course is saved, to realize that output damping force is adjustable.Traditional axial annulus resistance
Buddhist nun's clearance type MR damper is widely used because structure is simple.But since structure limits, biggish output cannot be generated
Damping force.Improve the maximum output damping force of MR damper, can by change cylinder diameter, reduce piston diameter and
Reduce the measures such as damping width to realize.But increasing damper cylinder diameter will lead to the increase of damper overall dimension；Subtract
Few damping clearance width can dramatically increase damping force when null field, at the same be easy to cause damper be long placed in do not have to after when working
Blocking.
Therefore, design that a kind of structure relative compact, output damping force be big, magnetic current variable resistance of damping force control wider range
Buddhist nun's device is the premise for further increasing MR damper and industrially applying.
Summary of the invention
In order to overcome the problems, such as that MR damper described in background technique has and meet actually making for MR damper
With requiring, the utility model provides a kind of parallel MR damper with multistage effective damping length.The magnetic current variable resistance
Buddhist nun's device mainly by piston rod, attenuator end cap, damper cylinder body, right baffle-plate, magnet exciting coil, right shell body, draw magnetosheath ring, resistance magnetosheath
The composition such as ring, magnetic conduction disk, floating piston, left and right hanging ring.Fluid course structure between built-up piston head, magnetic conduction disk and cylinder body
At axial annulus damp channel；Fluid course between right shell body and magnetic conduction disk constitutes radial disk damping channel；Piston rod
The circular through hole and blind round hole of right end constitute intermediate damping hole path.Axial annulus damp channel and radial disk damping are logical
Road, intermediate damping hole path form 2 parallel-connection type hydraulic circulation roads that magnetorheological fluid flows through.Under magnetic fields, built-up piston head,
4 sections of effective damping gaps are formed between magnetic conduction disk and cylinder body.Make damper axial circular in addition, hindering magnetosheath ring and drawing magnetosheath ring
Ring damp channel is effective, greatly improves effective damping length.When being powered to magnet exciting coil, flow through between 4 sections of effective dampings
Magnetorheological fluid yield stress in gap increases, to increase output damping force.It can be realized by controlling field coil current size
Export effective control of damping force.The utility model is circulated under the premise of not increasing overall dimension by 2 parallel-connection type hydraulics
Road and 4 sections of effective damping gaps increase output damping force, the vibration insulating system especially suitable for industries such as traffic, railways.
It includes: left hanging ring (1), piston rod (2), left gear that the utility model, which solves technical solution used by its technical problem,
Plate (3), magnet exciting coil (4), right shell body (5), counterbore screw (6), gasket (7), magnetic conduction disk (8), damper right end cap (9),
Right hanging ring (10), floating piston (11) draw magnetosheath ring (12), resistance magnetosheath ring (13), damper cylinder body (14) and a damper left side
End cap (15)；Left hanging ring (1) is threadably secured with piston rod (2) to be connect；Processing is round logical among damper left end cap (15)
Hole, piston rod (2) and the cooperation of damper left end cap (15) circular through hole internal surface gaps, and be sealed by a seal ring；Resistance
Buddhist nun's device left end cap (15) is fixedly connected with damper cylinder body (14) by screw, and is sealed by a seal ring；Piston rod (2)
Right end is machined with the shaft shoulder, and right baffle-plate (3) left side carries out axially position by the shaft shoulder；It is machined with circular through hole among right baffle-plate (3),
It is interference fitted with piston rod (2) external peripheral surface；Right shell body (5) inner surface is threaded through-hole, the processing of piston rod (2) right end
There is external screw thread, piston rod (2) is fastenedly connected by screw thread with right shell body (5)；Right shell body (5) left side is right against right baffle-plate (3)
End face；The toroidal cavity that right baffle-plate (3) and right shell body (5) surround constitutes bobbin winder bracket；Magnet exciting coil (4) is wrapped in bobbin winder bracket
It is interior；Draw and be machined with wedge-shaped opening in the middle part of magnetosheath ring (12), resistance magnetosheath ring (13) is mounted in wedge mouth；Draw magnetosheath ring (12) and resistance magnetic
Lantern ring (13) circumferential inner surface and magnet exciting coil (4) outer surface are interference fitted；Magnetic conduction disk (8) left side and baffle (5) right end
It is furnished with gasket (7) between face, and is connected by counterbore screw (6) axial restraint；The lead of magnet exciting coil (4) passes through right baffle-plate
(3) fairlead (18) of wire lead slot and piston rod (2) is drawn；Floating piston (11) circumferential outer surface and damper cylinder body
(14) circumferential inner surface clearance fit, and be sealed by a seal ring；In damper right end cap (9) and damper cylinder body (14)
Surface gap cooperation, and be sealed by a seal ring；Damper right end cap (9) is fixed with damper cylinder body (14) by screw
Connection；Damper right end cap (9) is threadably secured with right hanging ring (10) and connect.Piston rod (2) right end outer circumference surface is machined with
Circumferential equally distributed 3 circular through holes (17) connect with the blind round hole (16) processed on the right side of piston rod (2), constitute magnetic
The intermediate of rheology liquid stream warp damps hole path；Right baffle-plate (3), right shell body (5) draw magnetosheath ring (12) and resistance magnetosheath ring (13) combination
Together, built-up piston head is formed；Damper cylinder body (14) circumferential inner surface and built-up piston head circumferential outer surface and magnetic conduction
The axial annulus damp channel that magnetorheological fluid flows through is formed between disk (8) circumferential outer surface；Magnetic conduction disk (8) left side and the right side
The radial disk damping channel that magnetorheological fluid flows through is formed between baffle (5)；Axial annulus damp channel, radial disk damping are logical
Road and intermediate damping hole path constitute 2 parallel-connection type hydraulic circulation roads.
(1) the utility model damper is respectively in cylinder body and magnetic conduction disk, built-up piston head and damper cylinder body, magnetic conduction
4 sections of effective damping gaps are constituted between disk and built-up piston head, effectively increase the section of shear of liquid stream damp channel.It is encouraging
Under the magnetic fields that magnetic coil generates, the magnetorheological fluid shear stress of 4 sections of damping clearances is flowed through since the increase of the section of shear makes
Damping force is obtained to increase.Under the premise of not increasing exciting current, it ensure that damper can export sufficiently large damping force.
(2) compared with the MR damper of single axial annulus fluid course, the utility model damper uses 2
Parallel-connection type hydraulic circulation road forms 4 sections of effective damping gaps, under the premise of not increasing MR damper length, lesser excitation
There is biggish controllable damping force, while damping force dynamic regulation range is wider under the function of current, especially suitable for railway, traffic
Etc. industries vibration insulating system.
(3) the utility model draws magnetosheath ring and resistance magnetosheath ring by setting up separately to set on built-up piston head, so that axial annulus
Fluid course increases to full tunnel effective damping length from the lesser effective damping length in traditional winding slot two sides, improves axial direction
Magnetic field utilization rate at annulus fluid course increases MR damper output damping force.
(4) the utility model MR damper in addition to right baffle-plate, right shell body, cylinder body, draw magnetosheath ring and magnetic conduction disk
It is made outside of No. 10 steel permeability magnetic materials respectively, remaining parts are made of un-conducted magnetic material.This design can effectively ensure that magnetic force
Line integrated distribution gives full play to effect of the vertical magnetic field to magnetorheological fluid in 4 sections of effective damping gaps, improves magnetorheological damping
The working efficiency of device.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model magnetic line of force distribution schematic diagram.
Fig. 3 is that magnetorheological fluid flows through damp channel and damping clearance schematic diagram when the utility model piston rod is pressurized.
Fig. 4 is the structural schematic diagram of the utility model piston rod.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Figure 1, the utility model includes: left hanging ring (1), piston rod (2), right baffle-plate (3), magnet exciting coil (4), the right side
Baffle (5), counterbore screw (6), gasket (7), magnetic conduction disk (8), damper right end cap (9), right hanging ring (10), floating piston
(11), draw magnetosheath ring (12), resistance magnetosheath ring (13), damper cylinder body (14) and damper left end cap (15).
Fig. 2 show the utility model magnetic line of force distribution schematic diagram.Damper cylinder body (14) circumferential inner surface and combination are lived
The axial annulus damp channel that magnetorheological fluid flows through is formed between the circumferential outer surface of chock plug and magnetic conduction disk (8)；Magnetic conduction circle
The radial disk damping channel that magnetorheological fluid flows through is formed between disk (8) left side and right shell body (5).The magnetic line of force is divided into two
Point, a part pass through right baffle-plate (3), draw magnetosheath ring (12), cylinder body (14), right shell body (5) eventually pass back to right baffle-plate (3) formed close
Circuit is closed, another part eventually passes back to right baffle-plate (3) across right baffle-plate (3), cylinder body (14), magnetic conduction disk (8), right shell body (5)
Form closed circuit.
Fig. 3 show magnetorheological fluid when the utility model piston rod is pressurized and flows through damp channel and damping clearance schematic diagram.
Piston rod (2) right end outer circumference surface is machined with circumferential equally distributed 3 circular through holes (17), processes on the right side of piston rod (2)
Blind round hole (16) connect, constitute that magnetorheological fluid flows through intermediate damps hole path；Right baffle-plate (3), draws at right shell body (5)
Magnetosheath ring (12) and resistance magnetosheath ring (13) are combined, and built-up piston head is formed；Damper cylinder body (14) circumferential inner surface and
The axial annulus damp channel that magnetorheological fluid flows through is formed between the circumferential outer surface of built-up piston head and magnetic conduction disk (8)；
The radial disk damping channel that magnetorheological fluid flows through is formed between magnetic conduction disk (8) left side and right shell body (5).Axial annulus resistance
Buddhist nun channel and radial disk damping channel, intermediate damping hole path form 2 parallel-connection type hydraulic circulation roads that magnetorheological fluid flows through.Cylinder
Axial annulus damp channel between body (14) and right baffle-plate (3) is constituted between axial annulus damping clearance I and axial annulus damping
Gap II, the axial annulus damp channel between cylinder body (14) and magnetic conduction disk (8) constitute axial annulus damping clearance III；Magnetic conduction circle
The radial disk damping channel of disk (8) and right shell body (5) constitutes radial disk damping gap IV.Since the utility model is axis pair
Claim structure, which gives fluid course of the magnetorheological fluid in MR damper, and lower half portion then provides
Effective working region of damping clearance.
Fig. 4 is the structural schematic diagram of the utility model piston rod.Piston rod (2) right end outer circumference surface is machined with circumferential uniform
3 circular through holes (17) of distribution；Blind round hole (16) are machined on the right side of piston rod (2)；Circular through hole (17) and blind round hole
(16) it connects, constitutes the intermediate damping hole path that magnetorheological fluid flows through.Position is machined with fairlead among piston rod (2) left end
(18)；The lead of magnet exciting coil (4) is drawn by the wire lead slot of right baffle-plate (3) and the fairlead (18) of piston rod (2).
Utility model works principle is as follows:
As shown in Figure 1, Figure 2 and shown in Fig. 3 institute, a certain size electric current is passed through to magnet exciting coil (4), due to right baffle-plate (3), the right side
Baffle (5), magnetic conduction disk (8) draw magnetosheath ring (12) and damper cylinder body (14) is made of No. 10 steel permeability magnetic materials, according to electromagnetism
Magnetic line of force a part that effect is formed passes through right baffle-plate (3), draws magnetosheath ring (12), cylinder body (14), right shell body (5) and eventually pass back to a left side
Baffle (3) forms closed circuit；Another part passes through right baffle-plate (3), cylinder body (14), magnetic conduction disk (8), right shell body (5) finally
It returns to right baffle-plate (3) and forms closed circuit.The magnetic line of force is both perpendicular to axial annulus damping clearance I, II and III；Also vertical diameter simultaneously
To disk damping gap IV.
When magnet exciting coil (4) is powered, due to magnetic fields, the magnetorheological fluid of axial annulus and radial disk damping gap location
Viscosity will increase, yield stress enhancing.Magnetorheological fluid flows through the two channels, just must overcome the intermolecular of this catenation
Power, to generate output damping force.By adjusting size of current in magnet exciting coil (4), the surrender of changeable magnetorheological fluid is answered
Power, to reach required output damping force.
Claims (2)
1. a kind of parallel MR damper with multistage effective damping length, characterized by comprising: left hanging ring (1),
Piston rod (2), right baffle-plate (3), magnet exciting coil (4), right shell body (5), counterbore screw (6), gasket (7), magnetic conduction disk (8), resistance
Buddhist nun's device right end cap (9), floating piston (11), draws magnetosheath ring (12), resistance magnetosheath ring (13), damper cylinder body at right hanging ring (10)
(14) and damper left end cap (15)；Left hanging ring (1) is threadably secured with piston rod (2) to be connect；Damper left end cap
(15) intermediate to process circular through hole, piston rod (2) and the cooperation of damper left end cap (15) circular through hole internal surface gaps, and pass through
Sealing ring is sealed；Damper left end cap (15) is fixedly connected with damper cylinder body (14) by screw, and passes through sealing ring
It is sealed；Piston rod (2) right end is machined with the shaft shoulder, and right baffle-plate (3) left side carries out axially position by the shaft shoulder；Right baffle-plate (3)
Centre is machined with circular through hole, is interference fitted with piston rod (2) external peripheral surface；Right shell body (5) inner surface is threaded logical
Hole, piston rod (2) right end are machined with external screw thread, and piston rod (2) is fastenedly connected by screw thread with right shell body (5)；Right shell body (5) is left
End face abuts right baffle-plate (3) right side；The toroidal cavity that right baffle-plate (3) and right shell body (5) surround constitutes bobbin winder bracket；Excitation wire
Circle (4) is wrapped in bobbin winder bracket；Draw and be machined with wedge-shaped opening in the middle part of magnetosheath ring (12), resistance magnetosheath ring (13) is mounted in wedge mouth；
Draw magnetosheath ring (12) and resistance magnetosheath ring (13) circumferential inner surface and magnet exciting coil (4) outer surface is interference fitted；Magnetic conduction disk (8) is left
It is furnished with gasket (7) between end face and baffle (5) right side, and is connected by counterbore screw (6) axial restraint；Magnet exciting coil (4)
Lead drawn by the fairlead (18) of the wire lead slot of right baffle-plate (3) and piston rod (2)；Floating piston (11) circumferential outer surface
Face and damper cylinder body (14) circumferential inner surface clearance fit, and be sealed by a seal ring；Damper right end cap (9) and resistance
The cooperation of Buddhist nun's device cylinder body (14) internal surface gaps, and be sealed by a seal ring；Damper right end cap (9) and damper cylinder body
(14) it is fixedly connected by screw；Damper right end cap (9) is threadably secured with right hanging ring (10) and connect.
2. a kind of parallel MR damper with multistage effective damping length according to claim 1, feature
Be: piston rod (2) right end outer circumference surface is machined with circumferential equally distributed 3 circular through holes (17), with piston rod (2) right side
The blind round hole (16) of processing connects, and constitutes the intermediate damping hole path that magnetorheological fluid flows through；Right baffle-plate (3), right shell body
(5), draw magnetosheath ring (12) and resistance magnetosheath ring (13) is combined, form built-up piston head；In damper cylinder body (14) circumference
The axial direction that magnetorheological fluid flows through is formed between surface and built-up piston head circumferential outer surface and magnetic conduction disk (8) circumferential outer surface
Annulus damp channel；It is logical that the radial disk damping that magnetorheological fluid flows through is formed between magnetic conduction disk (8) left side and right shell body (5)
Road；Axial annulus damp channel, radial disk damping channel and intermediate damping hole path constitute 2 parallel-connection type hydraulic circulation roads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084279.6U CN208381187U (en) | 2018-07-10 | 2018-07-10 | A kind of parallel MR damper with multistage effective damping length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084279.6U CN208381187U (en) | 2018-07-10 | 2018-07-10 | A kind of parallel MR damper with multistage effective damping length |
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| CN208381187U true CN208381187U (en) | 2019-01-15 |
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|---|---|---|---|
| CN201821084279.6U Expired - Fee Related CN208381187U (en) | 2018-07-10 | 2018-07-10 | A kind of parallel MR damper with multistage effective damping length |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081116A (en) * | 2019-04-26 | 2019-08-02 | 哈尔滨工业大学 | A kind of MR damper with wider damp adjustable range |
| CN110332275A (en) * | 2019-07-30 | 2019-10-15 | 福州大学 | A kind of full tunnel shear extrusion mixed mode MR damper and its control method |
| CN113074214A (en) * | 2021-03-24 | 2021-07-06 | 北京工业大学 | Multi-magnetic-couple magneto-rheological damper with uniformly distributed magnetic flux |
| CN113074208A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Combined type magneto-rheological vibration damper |
| CN113790243A (en) * | 2021-10-08 | 2021-12-14 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN114251406A (en) * | 2021-11-18 | 2022-03-29 | 广西科技大学 | Rotary piston rod type anti-precipitation magnetorheological damper |
| WO2023226085A1 (en) * | 2022-05-27 | 2023-11-30 | 深圳市朝上科技有限责任公司 | Magnetorheological damper having toothed flow channel |
-
2018
- 2018-07-10 CN CN201821084279.6U patent/CN208381187U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081116A (en) * | 2019-04-26 | 2019-08-02 | 哈尔滨工业大学 | A kind of MR damper with wider damp adjustable range |
| CN110081116B (en) * | 2019-04-26 | 2020-07-17 | 哈尔滨工业大学 | Magneto-rheological damper with wider damping adjustment range |
| CN110332275A (en) * | 2019-07-30 | 2019-10-15 | 福州大学 | A kind of full tunnel shear extrusion mixed mode MR damper and its control method |
| CN110332275B (en) * | 2019-07-30 | 2021-06-22 | 福州大学 | Full-channel shear extrusion mixed mode magnetorheological damper and control method thereof |
| CN113074208A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Combined type magneto-rheological vibration damper |
| CN113074208B (en) * | 2021-03-16 | 2022-03-15 | 广西科技大学 | Combined type magneto-rheological vibration damper |
| CN113074214A (en) * | 2021-03-24 | 2021-07-06 | 北京工业大学 | Multi-magnetic-couple magneto-rheological damper with uniformly distributed magnetic flux |
| CN113790243A (en) * | 2021-10-08 | 2021-12-14 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN113790243B (en) * | 2021-10-08 | 2022-10-18 | 浙江路得坦摩汽车部件股份有限公司 | Damping piston of magnetorheological shock absorber and production process thereof |
| CN114251406A (en) * | 2021-11-18 | 2022-03-29 | 广西科技大学 | Rotary piston rod type anti-precipitation magnetorheological damper |
| CN114251406B (en) * | 2021-11-18 | 2024-03-15 | 广西科技大学 | Rotary piston rod type anti-sedimentation magnetorheological damper |
| WO2023226085A1 (en) * | 2022-05-27 | 2023-11-30 | 深圳市朝上科技有限责任公司 | Magnetorheological damper having toothed flow channel |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 |