CN108087449A - The soft starting device squeezed based on magnetorheological fluid and marmem - Google Patents
The soft starting device squeezed based on magnetorheological fluid and marmem Download PDFInfo
- Publication number
- CN108087449A CN108087449A CN201711245570.7A CN201711245570A CN108087449A CN 108087449 A CN108087449 A CN 108087449A CN 201711245570 A CN201711245570 A CN 201711245570A CN 108087449 A CN108087449 A CN 108087449A
- Authority
- CN
- China
- Prior art keywords
- magnetorheological fluid
- driven
- active
- starting device
- marmem
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/008—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being carried by a fluid, to vary viscosity when subjected to electric change, i.e. electro-rheological or smart fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/007—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by multiple substantially radial gaps in which the fluid or medium consisting of small particles is arranged
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
Abstract
A kind of soft starting device squeezed based on magnetorheological fluid and marmem includes active ring, driven torus, magnet exciting coil and memory alloy strips, active ring week is included to be stamped one layer of memory alloy strips, between the active ring and driven torus magnetic field is provided filled with magnetorheological fluid, magnet exciting coil；When the magnetic field that magnet exciting coil provides gradually increases, utilize the coldworking strengthened effect of magnetorheological fluid, increase the frictional force between active ring and driven torus, frictional heat, so that memory alloy strips expand, so that frictional force further increases, solve the defects of magnetorheological fluid can decline with the rise performance of environment temperature, and then realize that torque passes to driven flange from active flange, the performance of soft start can be ensured reliably and with long-term by the amount for controlling magnetorheological fluid, the present invention improves the transmission efficiency of soft starting device, and the transfer performance of soft starting device is made more to stablize for a long time.
Description
Technical field
It is mounted between prime mover and working machine for the starter of passing power the present invention relates to a kind of, particularly relates to
And a kind of extruding soft starting device based on magnetorheological fluid and marmem.
Background technology
Traditional mechanical device is also easy to produce mechanical shock when starting, and influences the service life of mechanical device, especially
It is in the case where bringing onto load starts, mechanical shock is more obvious.Marmem (SMA) and magnetorheological fluid (MRfluids)
It is novel intelligent material, the marmem with certain original shape carries out a degree of deformation under certain condition
Afterwards, inverse metamorphism can occur again by suitably changing temperature, material is made to revert to original shape, during shape is recovered,
If marmem, which suffers restraints, will generate very big restoring force, can externally be done work using its restoring force；Magnetorheological fluid is
It can become similar solid or the two-phase suspension of gel state, the variation of magnetorheological fluid from fluid under additional magnetic fields
It is reversible, liquid is typically mutually water or organic liquor, and solid-state phase is usually made of the magnetic-particle of micron order size, additional
Under magnetic fields, can magnetic polarization particle form dipole moment, particle is made to form similar chain or column knot parallel to magnetic direction
Structure causes the phase of magnetorheological fluid to change, and magnetorheological fluid apparent viscosity increases, and shows very high yield stress, only
Have when external shear stress is more than yield stress, magnetorheological fluid can just flow again, the yield stress of magnetorheological fluid with
The increase of magnetic field intensity and increase, until reach saturation state.
It, can as the Flexible Transmission between principal and subordinate's moving part can be achieved since magnetorheological fluid has good performance in terms of transmission
It realizes highly sensitive, high-precision, smoothly stepless time adjustment, easily realize the remote control of speed regulation process and automatically controls, therefore in recent years
The application study come to magnetorheological fluid in terms of transmission is more and more, but there is also following defects in terms of transmission for magnetorheological fluid：
(1) yield stress is smaller at typical condition for magnetorheological fluid, it is impossible to meet the needs for transferring high-power power, researcher has found
Along magnetic direction loading normal pressure magnetorheological fluid can be allowed to generate coldworking strengthened effect magnetorheological fluid and improve magnetorheological fluid
Yield stress transfers power so as to improve it, and how to be reasonably current magnetic current using the coldworking strengthened effect of magnetorheological fluid
Become problem existing for liquid driving device；(2) magnetorheological fluid can decline with the rise performance of environment temperature, it is impossible to meet in not equality of temperature
The work requirements under environment are spent, and the shape memory effect of marmem can be used for making up magnetorheological fluid in terms of transmission
There are the defects of, although researcher to marmem and magnetorheological fluid transmission engineering field be used alone made it is big
Quantity research, but the use in conjunction research for marmem and magnetorheological fluid in transmission device is also seldom.
The content of the invention
In view of the deficiencies of the prior art, it is an object of the invention to provide it is a kind of can either be to magnetorheological in the working clearance
Liquid is pressurizeed and can assist to transfer the soft starting device of torque by memorial alloy, ensures the transitivity of soft starting device
Energy.
In order to solve the above-mentioned technical problem, present invention employs following technical solutions
A kind of soft starting device squeezed based on magnetorheological fluid and marmem, including driving shaft and outer barrel, institute
It states driving shaft with non-magnetic active flange to be connected, be connected in the groove in the middle part of the active flange and the same axis of driving shaft
Driven shaft, the driven shaft are equipped with the center with the corresponding driven flange of active flange, the active flange and driven shaft
Equipped with bolt, the active flange is equipped with the active ring of multiple arranged concentrics, and the driven flange is equipped with multiple and active
The mutually chimeric driven torus of ring, is connected with left end cap on the driving shaft, and the driven shaft is equipped with right end cap, the left end cap with
Right end cap connects outer barrel respectively, and the magnet exciting coil for generating magnetic field is fixed in the outer barrel, the excitation wire ring in the outer barrel
The outside of active ring and driven torus is wound on, the end face of the outer barrel connection is equipped with gasket；It is characterized in that, the active ring
Week is included to be stamped one layer of memory alloy strips, is left between the memory alloy strips and driven torus full of as power transmitting medium magnetic
Flowing liquid.
Further limits scheme is the present invention：
Further, the memory alloy strips are made of marmem.
Further, the magnetic field that the magnet exciting coil generates is parallel to X direction.
Further, the gap between the memory alloy strips and driven torus is 3 ± 0.5mm.
Further, the active ring, driven torus, outer barrel and driven shaft are made of soft magnetic materials.
Further, the bearing for ensureing concentricity is equipped between the active flange and driven shaft.
The remarkable result of the present invention is：Because between active ring and driven torus filled with magnetorheological fluid, and active ring week
It is included to be stamped one layer of memory alloy strips；Using coldworking strengthened effect of the magnetorheological fluid under magnetic field, torque is made to be passed from active flange
It to driven flange, realizes and starts, improve the transmission efficiency of soft starting device；On the other hand, when temperature rise makes magnetorheological fluid
Transfer performance when declining, have endless metal belt made of marmem in active ring and driven czermak space, in friction thermal effect
Restoring force is generated under the action of answering to assist to promote the magnetorheological fluid for gradually turning to solid, so ensures that soft starting device exists
The transfer performance of condition of different temperatures makes the transfer performance of soft starting device more stablize for a long time.
Description of the drawings
Fig. 1 is the structure diagram of the soft starting device squeezed based on magnetorheological fluid and marmem of the present invention.
| 1 | Driving shaft |
| 2 | Sealing |
| 3 | Left end cap |
| 4 | Gasket |
| 5 | Active flange |
| 6 | Active ring |
| 7 | Driven torus |
| 8 | Driven flange |
| 9 | Outer barrel |
| 10 | Magnet exciting coil |
| 11 | Right end cap |
| 12 | Driven shaft |
| 13 | Bearing |
| 14 | Fluid injection plug |
| 15 | Bolt |
| 16 | Memory alloy strips |
Specific embodiment
Case 1 is embodied：
A kind of soft starting device squeezed based on magnetorheological fluid and marmem, including driving shaft 1 and outer barrel 9,
The driving shaft 1 is connected with non-magnetic active flange 5, is connected in the groove at 5 middle part of active flange same with driving shaft 1
The driven shaft 12 of axis, the driven shaft 12 are equipped with and the corresponding driven flange 8 of active flange 5,5 He of active flange
The center of driven shaft 12 is equipped with bolt 15, and the active flange 5 is equipped with the active ring 6 of multiple arranged concentrics, the driven method
Orchid 8 is equipped with multiple driven torus 7 mutually chimeric with active ring 6, and left end cap, the driven shaft 12 are connected on the driving shaft 1
Right end cap 11 is equipped with, the left end cap 3 is not connected outer barrel 9 with right end cap point 11, is fixed in the outer barrel 9 and generates magnetic field
Magnet exciting coil 10, the magnet exciting coil 10 in the outer barrel 9 are looped around the outside of active ring 6 and driven torus 7, and the outer barrel 9 connects
End face be equipped with gasket 4.It is characterized in that, included it is stamped one layer of memory alloy strips 16, the memory in active ring week
It is left between alloy strip 16 and driven torus 7 full of as power transmitting medium magnetic current liquid.
The memory alloy strips 16 are made of marmem, and the magnetic field that the magnet exciting coil generates is parallel to transverse axis side
It is 3 ± 0.5mm to, gap between the active ring 6 and driven torus 7, the active ring 6, driven torus 7, outer barrel 9 and driven shaft
12 are made of soft magnetic materials, and the bearing 13 for ensureing concentricity is equipped between the active flange 5 and driven shaft 12.
The concrete operating principle of the present embodiment is：
When magnet exciting coil 10 is connected, the electric current in control coil changes from small to large, its magnetic field provided is made gradually to increase
Greatly, you can change the rheological behavior of magnetorheological fluid, magnetorheological fluid changes from liquid into solid, and makes between active ring 6 and driven torus 7
Frictional force increases, frictional heat so that memory alloy strips 16 expand so that frictional force further increases, magnetorheological by changing
Shear stress of the liquid under shear mode, so as to export different torques, torque is defeated through driving shaft 1, active flange 5, active ring 6
Enter, the magnetorheological fluid through becoming solid from liquid transfers, driven torus 7 of the torque through driven shaft assembly, driven flange 8, driven shaft
12 outputs.Electric current in control magnet exciting coil 10 changes from small to large, you can changes the rheological behavior of magnetorheological fluid, you can realizes
The smooth start of mechanical device.Work as load excessive, when being more than the torque capacity that starter can be transferred, between master and slave moving part certainly
It is dynamic to have skidded, there is overload protective function.Pass through the progress and stopping of cut-offfing control soft start of magnet exciting coil 10.
The remarkable result of the present invention is：Because between active ring and driven torus filled with magnetorheological fluid, and active ring week
It is included to be stamped one layer of memory alloy strips；Using coldworking strengthened effect of the magnetorheological fluid under magnetic field, torque is made to be passed from active flange
It to driven flange, realizes and starts, improve the transmission efficiency of soft starting device；On the other hand, when temperature rise makes magnetorheological fluid
Transfer performance when declining, have endless metal belt made of marmem in active ring and driven czermak space, in friction thermal effect
Restoring force is generated under the action of answering to assist to promote the magnetorheological fluid for gradually turning to solid, so ensures that soft starting device exists
The transfer performance of condition of different temperatures makes the transfer performance of soft starting device more stablize for a long time.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. a kind of soft starting device squeezed based on magnetorheological fluid and marmem, described including driving shaft and outer barrel
Driving shaft is connected with non-magnetic active flange, be connected in the groove in the middle part of the active flange with the same axis of driving shaft from
Moving axis, the driven shaft is equipped with to be set with the corresponding driven flange of active flange, the center of the active flange and driven shaft
There is bolt, the active flange is equipped with the active ring of multiple arranged concentrics, and the driven flange is equipped with multiple and active ring
Mutually chimeric driven torus, is connected with left end cap on the driving shaft, and the driven shaft is equipped with right end cap, the left end cap with it is right
End cap connects outer barrel respectively, and the magnet exciting coil for generating magnetic field is fixed in the outer barrel, and the magnet exciting coil in the outer barrel is surround
In the outside of active ring and driven torus, the end face of the outer barrel connection is equipped with gasket；It is characterized in that, the active ring week
It is included to be stamped one layer of memory alloy strips, it is left between the memory alloy strips and driven torus full of as power transmitting medium magnetic current
Liquid.
2. the soft starting device squeezed as described in claim 1 based on magnetorheological fluid and marmem, it is characterised in that：Institute
Memory alloy strips are stated to be made of marmem.
3. the soft starting device squeezed as described in claim 1 based on magnetorheological fluid and marmem, it is characterised in that：Institute
The magnetic field of magnet exciting coil generation is stated parallel to X direction.
4. the soft starting device squeezed as claimed in claim 2 based on magnetorheological fluid and marmem, it is characterised in that：Institute
It is 3 ± 0.5mm to state the gap between memory alloy strips and driven torus.
5. the soft starting device squeezed as described in claim 1 based on magnetorheological fluid and marmem, it is characterised in that：Institute
Active ring, driven torus, outer barrel and driven shaft is stated to be made of soft magnetic materials.
6. the soft starting device squeezed as described in claim 1 based on magnetorheological fluid and marmem, it is characterised in that：Institute
State the bearing for being equipped between active flange and driven shaft and ensureing concentricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245570.7A CN108087449A (en) | 2017-12-01 | 2017-12-01 | The soft starting device squeezed based on magnetorheological fluid and marmem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245570.7A CN108087449A (en) | 2017-12-01 | 2017-12-01 | The soft starting device squeezed based on magnetorheological fluid and marmem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087449A true CN108087449A (en) | 2018-05-29 |
Family
ID=62173610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711245570.7A Pending CN108087449A (en) | 2017-12-01 | 2017-12-01 | The soft starting device squeezed based on magnetorheological fluid and marmem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087449A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939667A (en) * | 2018-09-21 | 2020-03-31 | 通用汽车环球科技运作有限责任公司 | Transmission clutch assembly |
| CN111227595A (en) * | 2020-03-13 | 2020-06-05 | 万丽华 | Anti-scald spoon |
| CN111810556A (en) * | 2020-07-20 | 2020-10-23 | 中国矿业大学 | A hydraulic squeeze magnetorheological fluid clutch |
| CN113431850A (en) * | 2021-07-23 | 2021-09-24 | 重庆理工大学 | Electromagnetic extrusion magnetorheological and shape memory alloy friction composite brake |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137429A (en) * | 1985-12-11 | 1987-06-20 | Keisebun:Kk | Joint of power shaft |
| SU1516644A1 (en) * | 1987-08-27 | 1989-10-23 | Брянский Институт Транспортного Машиностроения | Magnetic fluid clutch |
| CN101319695A (en) * | 2008-03-20 | 2008-12-10 | 中国矿业大学 | Magnetic rheological fluid soft start device |
| CN101368663A (en) * | 2007-08-16 | 2009-02-18 | 通用汽车环球科技运作公司 | Active material based bodies for varying surface texture and frictional force levels |
-
2017
- 2017-12-01 CN CN201711245570.7A patent/CN108087449A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137429A (en) * | 1985-12-11 | 1987-06-20 | Keisebun:Kk | Joint of power shaft |
| SU1516644A1 (en) * | 1987-08-27 | 1989-10-23 | Брянский Институт Транспортного Машиностроения | Magnetic fluid clutch |
| CN101368663A (en) * | 2007-08-16 | 2009-02-18 | 通用汽车环球科技运作公司 | Active material based bodies for varying surface texture and frictional force levels |
| CN101319695A (en) * | 2008-03-20 | 2008-12-10 | 中国矿业大学 | Magnetic rheological fluid soft start device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939667A (en) * | 2018-09-21 | 2020-03-31 | 通用汽车环球科技运作有限责任公司 | Transmission clutch assembly |
| CN110939667B (en) * | 2018-09-21 | 2021-02-05 | 通用汽车环球科技运作有限责任公司 | Transmission clutch assembly |
| CN111227595A (en) * | 2020-03-13 | 2020-06-05 | 万丽华 | Anti-scald spoon |
| CN111810556A (en) * | 2020-07-20 | 2020-10-23 | 中国矿业大学 | A hydraulic squeeze magnetorheological fluid clutch |
| CN111810556B (en) * | 2020-07-20 | 2024-04-26 | 中国矿业大学 | Hydraulic extrusion type magnetorheological fluid clutch |
| CN113431850A (en) * | 2021-07-23 | 2021-09-24 | 重庆理工大学 | Electromagnetic extrusion magnetorheological and shape memory alloy friction composite brake |
| CN113431850B (en) * | 2021-07-23 | 2022-03-08 | 重庆理工大学 | Electromagnetic extrusion magnetorheological and shape memory alloy friction composite brake |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180529 |