CN105545982B - A kind of high-power magnetorheological permanent acceleration soft starting device with control system - Google Patents
A kind of high-power magnetorheological permanent acceleration soft starting device with control system Download PDFInfo
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- CN105545982B CN105545982B CN201610076992.5A CN201610076992A CN105545982B CN 105545982 B CN105545982 B CN 105545982B CN 201610076992 A CN201610076992 A CN 201610076992A CN 105545982 B CN105545982 B CN 105545982B
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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
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
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Abstract
The invention discloses a kind of high-power magnetorheological permanent acceleration soft starting device with control system, belong to magnetic flow liquid transmission field；Wherein, the high-power magnetorheological permanent acceleration soft starting device with control system is divided into device part and control section；Device part uses the double plate magnetic flow liquid kind of drive, and two driving disk working faces have radial streak groove, are full of magnetic flow liquid between two disks, is wound with magnet exciting coil outside it；Control section by data processor, master controller, sensor, current controller and hydraulic cylinder control valve group into；The present invention improves the maximum twist torque of magnetic rheological soft startor by the way that the surface texture of double plate internal face is pressurizeed and changed to magnetic flow liquid, and realizes the control of the constant acceleration Soft Starting System in start-up course.
Description
Technical field
The present invention relates to a kind of magnetic rheological soft startor, especially a kind of high-power magnetorheological perseverance with control system
Accelerate soft starting device.
Background technology
Magnetic flow liquid is a kind of new intellectual material, and when without externally-applied magnetic field, it shows low viscosity class Newtonian fluid
Characteristic.And in the case of externally-applied magnetic field, the good liquid form of rheological property can be become similar within the time of Millisecond
The material of solid-state, once and magnetic field is ineffective, will then revert to liquid again.Magnetic flow liquid magnetic in magnetic flow liquid under magnetic fields
Property particle can form the microstructures such as logical chain, side chain, Isolated Chains and column chain, and the end of all kinds of microstructure of molecular chain is easily broken
Split, be difficult merely the yield strength for improving magnetic flow liquid by shear mode therefore.But when magnetic flow liquid is in magnetic field
During by additional normal pressure along magnetic direction, its shear stress can obtain larger raising, even improve an order of magnitude.
The i.e. so-called magnetic flow liquid Extrusion Strengthening Technique of this method by applying pressure change magnetorheological fluid performance.Magnetic flow liquid shape
Into post chain microstructure also without shearing, relative fortune has been there is between the ferromagnetic particle and transmission wall in magnetic flow liquid
Dynamic, this phenomenon is wall slippage, reduces the solidification intensity for even avoiding wall slippage from improving magnetic flow liquid.Due to magnetic current
Become this excellent rheological behavior of liquid, it is widely used in fields such as machinery, automobiles.Domestic patent：
CN100359198C discloses a kind of magnetic rheological soft startor, and driving link is made into cavity, placement shape and its phase in it
The driven member matched somebody with somebody, produce magnetic field by two groups of magnet coils and increase its torsional moment.CN102297213B discloses a kind of multi-disc
Formula magnetic rheological soft startor, using multiple-piece construction, increase the excursion of moment of torsion, the controllable of heavy duty equipment can be achieved
Soft start.CN102359513B discloses a kind of Water-cooled magnetorheological soft start device, using multiple masters, driven cylinder gap cloth
The structure type put, increase the torsional moment of soft starting device.Above-mentioned magnetic rheological soft startor increase torsional moment is main
There is two ways：On the one hand by increasing the electric current of magnet exciting coil, and then increasing magnetic field, the solidification for improving magnetic flow liquid are strong
Degree.The electric current of increase magnet exciting coil can effectively increase torsional moment within the specific limits, but when magnetic flow liquid reaches magnetic
After saturation, increasing the electric current of magnet exciting coil can not then continue to improve torsional moment.On the other hand, by increasing the number of friction plate
Amount forms multiple damping cavities, so as to increase soft starting device maximum twist torque.But the quantity for increasing friction plate not only makes dress
Put more complicated, it is difficult to be processed and assemble, and operating difficulties, reliability cannot be guaranteed.And above-mentioned magnetic current softens
Starter is not carried out effectively controlling to its starting loop.
The content of the invention
In order to solve the above problems, the present invention provides a kind of high-power magnetorheological permanent acceleration soft start with control system
Device, on the one hand when magnetic field intensity reaches magnetic flow liquid saturation magnetic field intensity, increasing the pressure of magnetic flow liquid can continue to increase
Its solidification intensity, drastically increase the maximum twist torque of soft starting device；On the other hand, set radially on the surface of disk
Groove, the wall slippage after magnetic flow liquid solidification is reduced, increase the maximum twist torque of soft starting device；And by encouraging
The intelligent control of magnetic size of current and magnetic flow liquid pressure, and then the control to magnetic current and liquid flow variation characteristic is realized, and it is final real
The permanent of existing magneto-rheological fluid soft starting device accelerates to start.
The present invention in order to solve its technical problem used by technical scheme be：A kind of high-power magnetic with control system
Rheology is permanent to accelerate soft starting device, is divided into high-power magnetic rheological soft startor part and control section；High-power magnetic current softens
Starter part includes left magnetic conductive shell, goes out liquid/pressure measurement port, left bearing end cap, left round nut, left taper roller axle
Hold, driving shaft, active disk, magnetism-isolating loop, magnet exciting coil, sealing ring, feed liquor/pressurization port, driven disk, right magnetic conductive shell,
Right taper roll bearing, right round nut, driven shaft and right bearing end cap；Left magnetic conductive shell is fastened with right magnetic conductive shell by screw
It is fixed together, the left bearing end cap with sealing ring is fixed in the end of left magnetic conductive shell by screw, and driving shaft passes through a pair
Left taper roll bearing is connected with left magnetic conductive shell, and left taper roll bearing is fixed by left round nut, and active disk passes through
Screw is fixed on the right-hand member of driving shaft, and driven shaft is fixed on right magnetic conductive shell by a pair of right taper roll bearings, right magnetic conduction
Outer casing end fixes the right bearing end cap with sealing ring by screw, and driven disk is fixed by screws in a left side for driven shaft
End, be sequentially provided with the groove that active disk, driven disk and left magnetic conductive shell, right magnetic conductive shell are formed magnet exciting coil, every
Magnet ring, sealing ring, magnetism-isolating loop are provided with injection magnetic flow liquid and feed liquor/pressurization port to magnetic flow liquid pressurization and discharge magnetic
Rheology liquid goes out liquid/pressure measurement port with measurement magnetic flow liquid pressure.
Further, the gap 1.5-2mm between active disk and brake puck.
Further, the inner surface of active disk and brake puck all has radial streak groove, reduces magnetic flow liquid and circle
The wall slippage of disk, improve the transmission capacity after magnetic flow liquid solidification.
The high-power magnetorheological permanent control section for accelerating soft starting device, including input speed probe, output end turn
Speed and rotating speed acceleration sensor, field coil current sensor, magnetic flow liquid pressure sensor, data processor, spreading number
According to connection equipment, MCU controllers, field coil current controller and hydraulic cylinder supercharger control valve.
Wherein, input speed probe, output end rotating speed and rotating speed acceleration sensor, field coil current sensing
Device, magnetic flow liquid pressure sensor by corresponding probe respectively detection input rotating speed, output end rotating speed and rotating speed acceleration, encourage
Magnet-wire loop current and magnetic flow liquid pressure, and transfer to data processor for analysis to handle data, will according to certain communication protocol
Data issue growth data connection equipment and MCU controllers, and MCU controllers are according to buffer value set in advance and data processor
The detection data COMPREHENSIVE CALCULATING sent, the reference of field coil current and cylinder pressure is calculated by certain algorithmic rule
Data, according to control rule, MCU processors will not provide pressure increasing to hydraulic cylinder before field coil current reaches saturation value
The control signal added, field coil current reference data will be sent to field coil current controller, and then by current reference number
According to actual control electric current is converted into, similarly, cylinder pressure reference data will be sent to hydraulic cylinder supercharger control valve, and pressure is joined
Examine data and be converted into actual hydraulic pressure pressure.Meanwhile the reference of field coil current and cylinder pressure that MCU controllers calculate
Data will also feed back to data processor by communication protocol, and then reference data is issued into growth data by data processor
Connect equipment；In the course of work, continuous firing, at any time collection are carried control system by each sensor of a whole set of control system
The high-power magnetorheological permanent work state information for accelerating soft starting device, by these information and may be passed through by data processor
The buffer value that growth data connection equipment obtains together issues MCU processors, and field coil current is controlled for adjusting at any time
The control of device and hydraulic cylinder supercharger control valve；
When output end rotating speed is consistent with input speed, MCU processors will pass through field coil current controller and liquid
Cylinder pressure supercharger control valve controls field coil current and cylinder pressure to keep currency constant, and change in input speed or
Load torque maintains this value before changing.
Further, master controller includes MCU controllers, data collection processor, A/D converter and D/A converter；Its
In, MCU controllers are mainly used in the control of logic function, and A/D converter and data processor are mainly used in gathering sensor number
According to D/A converter is used to control field coil current controller and additional mechanical supercharging controller.
Further, data collection processor includes data processor, pressure data acquisition module, current data collection mould
Block, input speed data acquisition module, output end speed data acquisition module, output end acceleration information acquisition module, expansion
Open up Data Connection Equipment and corresponding A/D converter；Wherein, data processor is used to complete the reality to each sensing data
When handle, and will handle complete data delivery to MCU controllers in case control use；Pressure data acquisition module can gather
The pressure data of magnetic flow liquid medium, data are transferred to by data processor processes by A/D converter；Current data acquisition module
The current data in magnet coil can be gathered, data are transferred to by data processor processes by A/D converter；Active shaft end and
The speed acquisition module of driven shaft end is respectively used to gather the angular speed of active shaft end and driven shaft end, will by A/D converter
Data transfer to data processor to be compared；Driven shaft end acceleration acquisition module is used to gather the driven increased speed of shaft end rotating speed
Degree, closed-loop control was used for after data processor processes to accelerate soft start dress with the high-power magnetorheological perseverance of control system
The buffer speed put；Growth data connection equipment is used to connect host computer or programming card, and each sensing data is passed in real time
It is defeated on host computer or programming card, realizing that monitoring high-power with control system in real time magnetorheological permanent accelerates soft start dress
The state put, and the high-power magnetorheological perseverance with control system can be set by host computer or programming card and accelerates soft open
The buffer speed of dynamic device.
Further, Auxiliary Damping controller includes magnet exciting coil and hydraulic cylinder control valve；Wherein, magnet exciting coil can change
Magnetic field intensity in magnetic flow liquid medium, hydraulic cylinder control valve are used for the pressure for changing hydraulic cylinder output, and then after control solidification
The pressure of magnetic flow liquid.
Compared with background technology, the gain effect having is the present invention：
（1）The surface of driving disk of the present invention has radial streak groove, reduces the wall slippage of magnetic flow liquid and disk,
Improve the transmission capacity after magnetic flow liquid solidification.
（2）The present invention increases given current value to produce corresponding electromagnetic quantities by controller to magnetoelectricity coil, so as to
Strengthen the shear yield strength of magnetorheological medium；The pressure value applied by changing hydraulic jack to magnetic flow liquid medium, auxiliary
The shear yield stress of magnetic flow liquid medium after increase solidification, improves its transmission capacity.And by exciting current and pressure
The SERVO CONTROL of power, finally realize the soft start of load device.
（3）The present invention can be set on the basis of said structure with host computer or programming card by growth data connection
It is standby to monitor the high-power magnetorheological permanent sensor information and operation information for accelerating soft starting device with control system in real time,
And the high-power magnetorheological permanent starting loop for accelerating soft starting device with control system can be changed in real time.
（4）The electric current and pressure data that Auxiliary Damping controller is gathered by data collection processor carry out closed-loop control,
It ensure that the high-power magnetorheological permanent servo control performance for accelerating soft starting device with control system.
Brief description of the drawings
Fig. 1 is the system architecture schematic diagram of the present invention
Fig. 2 is the apparatus structure schematic diagram of the present invention
Fig. 3 is the Two-stage control schematic diagram of the present invention
Fig. 4 is the driving disk structural representation of the present invention
In accompanying drawing：1 left magnetic conductive shell, 2 go out liquid/pressure measurement port, 3 left bearing end caps, 4 left round nuts, 5 left circular cone rollings
Sub- bearing, 6 driving shafts, 7 active disks, 8 magnetism-isolating loops, 9 magnet exciting coils, 10 sealing rings, 11 feed liquors/pressurization port, 12 driven circles
Disk, 13 right magnetic conductive shells, 14 right taper roll bearings, 15 right round nuts, 16 driven shafts, 17 right bearing end caps.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in figure 1, a kind of high-power magnetorheological permanent acceleration soft starting device with control system, is divided into high-power magnetic
Rheology is permanent to accelerate soft starting device part and control section；
As shown in Fig. 2 high-power magnetic rheological soft startor part includes left magnetic conductive shell 1, goes out liquid/pressure measurement port
2nd, left bearing end cap 3, left round nut 4, left taper roll bearing 5, driving shaft 6, active disk 7, magnetism-isolating loop 8, magnet exciting coil 9,
Sealing ring 10, feed liquor/pressurization port 11, driven disk 12, right magnetic conductive shell 13, right taper roll bearing 14, right round nut 15,
Driven shaft 16 and right bearing end cap 17.Left magnetic conductive shell 1 is fastened by screw with right magnetic conductive shell 13 and is fixed together, left magnetic conduction
The left bearing end cap 3 with sealing ring is fixed in the end of shell 1 by screw, and driving shaft 6 passes through a pair of left taper roll bearings 5
It is connected with left magnetic conductive shell 1, left taper roll bearing 5 is compressed positioning by left round nut 4, and active disk 7 is fixed by screws in
The right-hand member of driving shaft 6, driven shaft 16 are fixed on right magnetic conductive shell 13 by right taper roll bearing 14, the right end of magnetic conductive shell 13
The right bearing end cap 17 with sealing ring is fixed by screw by portion, and driven disk 12 is fixed by screws in a left side for driven shaft 16
End, excitation wire is sequentially provided with the groove that active disk 7, driven disk 12 are formed with left magnetic conductive shell 1, right magnetic conductive shell 13
Circle 9, magnetism-isolating loop 8, sealing ring 10, magnetism-isolating loop 8 are provided with injection magnetic flow liquid and feed liquor/pressurization port to magnetic flow liquid pressurization
11 and discharge magnetic flow liquid and measure magnetic flow liquid pressure and go out liquid/pressure measurement port 2.
Electric current is passed through in magnet exciting coil 9, is provided between the active disk 7 of radial groove and driven disk 12 and produces on surface
The raw magnetic field with certain magnetic induction intensity, and magnetic field intensity increases and increased with electric current.It is magnetorheological in two disk gaps
Liquid forms post chain microstructure in magnetic direction, and moment is changed into semisolid by liquid, and its solidification intensity is with magnetic field
Enhancing and become big, so as to which active disk drives driven disk rotational, and then realize soft start.When magnetic flow liquid reaches magnetic saturation
Afterwards, the braking torque that the size of current in magnet exciting coil 9 is no longer able to improve brake is increased.Now, live end can be passed through
Mouth pressurizes to magnetic flow liquid, magnetic flow liquid shear stress can be improved with larger, so as to provide bigger staring torque.
The control section of high-power magnetic rheological soft startor, including input speed probe, output end rotating speed and turn
Fast acceleration transducer, field coil current sensor, magnetic flow liquid pressure sensor, data processor, growth data connection
Equipment, MCU controllers, field coil current controller and hydraulic cylinder supercharger control valve.
The specific control method of said structure is as follows：
（1）Pressure data acquisition module, current data acquisition module, active shaft end speed data acquisition module, driven shaft
End speed data acquisition module and driven shaft end acceleration information acquisition module gather current information, magnetic in magnet coil respectively
Pressure information, active shaft end and driven shaft end rotary speed information and driven shaft end acceleration information in rheology liquid medium, pass through
A/D converter transmits the information to data processor；
（2）Data processor is handled the information of data collecting module collected, is on the one hand led to the information after processing
Cross growth data connection equipment and be sent to host computer or programming card, be on the other hand sent to these information by data/address bus
MCU processors；
（3）MCU processors by by active shaft end and driven shaft end rotary speed information and driven shaft end acceleration information with
Buffer speed set in advance is compared to obtain the damping control information to magnetic flow liquid medium；
（4）MCU processors are by analyzing the pressure information in current information and magnetic flow liquid medium in magnet exciting coil point
The control information to magnet exciting coil and hydraulic cylinder control valve is not obtained, and obtains corresponding control instruction, then refers to these
Order is sent to Auxiliary Damping controller by D/A converter；
（5）Auxiliary Damping controller is by changing the electric current of magnet exciting coil, so as to control the magnetic field in magnetic flow liquid medium
Intensity, and then change the shear yield strength of magnetic flow liquid medium；By controlling the opening and closing degree of hydraulic cylinder control valve, Jin Ergai
Become hydraulic jack and be applied to the high-power magnetorheological permanent pressure for accelerating magnetic flow liquid in soft starting device with control system；
（6）MCU processors can also be sent the control information to magnet coil and hydraulic cylinder control valve by data/address bus
To data processor, information is connected by growth data by equipment by data processor and is sent to host computer or programming card；
（7）Data processor, which will also constantly be gathered and handled, to be come from data acquisition module and connects equipment with growth data
Information, and MCU processors are transmitted these information to, add for adjusting the high-power magnetorheological perseverance with control system in real time
The buffer speed of fast soft starting device and the closed-loop control to Auxiliary Damping controller.
As shown in figure 3, because pressurization must be carried out after magnetic flow liquid solidification, the present invention is proposed based on magnetic flow liquid
Two-level Control method.
Under one-level input condition, data processor is to the input speed of motor, and the big work(with control system
The output speed of the magnetorheological permanent acceleration soft starting device of rate is acquired carries out speed discrepancy solution by adder, and its signal is delivered to
PID controller, reconciled by PID, provide the current output value of the variate-value, i.e. magnet exciting coil of one-level output, can be increased with this
Magnetic flow liquid solidification intensity, and then the purpose for improving torsional moment can be reached.
When data processor to the high-power magnetorheological permanent current value for accelerating soft starting device with control system with it is defeated
When the curved line relation gone out between rotating speed is analyzed, the current induced magnetic field of magnet exciting coil makes magnetic flow liquid reach magnetic saturation, this
When saturation switch closure, open two level input, MCU controllers are from being advanced into Two-stage control state.
In the case where two level inputs, system maintains the state that one-level inputs first, meanwhile, open hydraulic cylinder electromagnetic switch
Valve, while the constantly output pressure of collection hydraulic cylinder, deliver to MCU controllers by this pressure signal and carry out PID control, by continuous
The output pressure of hydraulic cylinder is improved, and then is continuously increased the high-power magnetorheological permanent acceleration soft starting device with control system
Torsional moment, finally ensure that it accelerates to start as required.
Claims (5)
1. a kind of high-power magnetorheological permanent acceleration soft starting device with control system, it is characterised in that it is divided into high-power magnetic
Rheology is permanent to accelerate soft starting device part and control section：
High-power magnetorheological permanent acceleration soft starting device part, including left magnetic conductive shell（1）, go out liquid/pressure measurement port（2）、
Left bearing end cap（3）, left round nut（4）, left taper roll bearing（5）, driving shaft（6）, active disk（7）, magnetism-isolating loop（8）、
Magnet exciting coil（9）, sealing ring（10）, feed liquor/pressurization port（11）, driven disk（12）, right magnetic conductive shell（13）, the rolling of right circular cone
Sub- bearing（14）, right round nut（15）, driven shaft（16）With right bearing end cap（17）；
Left magnetic conductive shell（1）With right magnetic conductive shell（13）Fastened and be fixed together by screw, left magnetic conductive shell（1）End lead to
Cross screw and fix the left bearing end cap with sealing ring（3）, driving shaft（6）Pass through a pair of left taper roll bearings（5）Led with a left side
Magnetic shell（1）It is connected, left round nut（4）By left taper roll bearing（5）It is fixed, active disk（7）Fixed by screw
In driving shaft（6）Right-hand member, driven shaft（16）Pass through a pair of right taper roll bearings（14）It is fixed on right magnetic conductive shell（13）On,
Right magnetic conductive shell（13）The right bearing end cap with sealing ring is fixed in end by screw（17）, driven disk（12）Pass through screw
It is fixed on driven shaft（16）Left end, in active disk（7）, driven disk（12）With left magnetic conductive shell（1）, right magnetic conductive shell
（13）Magnet exciting coil is sequentially provided with the groove of composition（9）, magnetism-isolating loop（8）, sealing ring（10）, magnetism-isolating loop（8）It is provided with injection
Magnetic flow liquid and feed liquor/pressurization port to magnetic flow liquid pressurization（11）And discharge magnetic flow liquid and measurement magnetic flow liquid pressure
Go out liquid/pressure measurement port（2）；
The high-power magnetorheological permanent control section for accelerating soft starting device, including input speed probe, output end rotating speed and
Rotating speed acceleration sensor, field coil current sensor, magnetic flow liquid pressure sensor, data processor, growth data connect
Connect equipment, MCU controllers, field coil current controller and hydraulic cylinder supercharger control valve；
Wherein, input speed probe, output end rotating speed and rotating speed acceleration sensor, field coil current sensor, magnetic
Rheology hydraulic pressure force snesor passes through corresponding detection input rotating speed, output end rotating speed and rotating speed acceleration, the excitation wire respectively of popping one's head in
Loop current and magnetic flow liquid pressure, and transfer to data processor to be analyzed and processed data, will according to certain communication protocol
Data issue growth data connection equipment and MCU controllers, and MCU controllers are according to buffer value set in advance and data processor
The detection data COMPREHENSIVE CALCULATING sent, the reference of field coil current and cylinder pressure is calculated by certain algorithmic rule
Data, according to control rule, before the current induced magnetic field of magnet exciting coil does not make magnetic flow liquid reach magnetic saturation, MCU processing
Device will not provide the increased control signal of pressure to hydraulic cylinder, and field coil current reference data will be sent to field coil current
Controller, and then current reference data are converted into actual control electric current；
When the current induced magnetic field of magnet exciting coil makes magnetic flow liquid reach magnetic saturation, cylinder pressure reference data will be sent to liquid
Cylinder pressure supercharger control valve, pressure reference data are converted into actual hydraulic pressure pressure；
Meanwhile the reference data of the field coil current that calculates of MCU controllers and cylinder pressure will also pass through communication protocol
Data processor is fed back to, and then reference data is issued by growth data by data processor and connects equipment；
In the course of work, continuous firing, at any time collection are carried the big work(of control system by each sensor of a whole set of control system
The magnetorheological permanent work state information for accelerating soft starting device of rate, by these information and may pass through extension by data processor
The buffer value that Data Connection Equipment obtains together issues MCU processors, for adjust at any time to field coil current controller with
And the control of hydraulic cylinder supercharger control valve；
When output end rotating speed is consistent with input speed, MCU processors will pass through field coil current controller and hydraulic cylinder
Supercharger control valve controls field coil current and cylinder pressure to keep currency constant, and changes or load in input speed
Moment of torsion maintains this value before changing.
2. a kind of high-power magnetorheological permanent acceleration soft starting device with control system according to claim 1, it is special
Sign is：The working face of active disk and driven disk has radial streak groove, groove width 2mm, depth 0.5mm.
3. a kind of high-power magnetorheological permanent acceleration soft starting device with control system according to claim 1, it is special
Sign is：The gap of described active disk and driven disk is 1.5-2mm.
4. a kind of high-power magnetorheological permanent acceleration soft starting device with control system according to claim 1, it is special
Sign is：The data that the data and contrast that control process can be detected by respective sensor are pre-entered or set carry out closed loop control
System.
5. a kind of high-power magnetorheological permanent acceleration soft starting device with control system according to claim 1, it is special
Sign is：Acceleration when programming card sets soft start can be connected as main frame and monitor each sensing data, can also made
Computer is connected for slave, acceleration when setting soft start in real time by host computer simultaneously monitors each sensing data.
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| CN105545982B true CN105545982B (en) | 2018-02-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107830080B (en) * | 2017-12-04 | 2024-05-14 | 洛阳理工学院 | Novel magneto-rheological fluid overrunning clutch |
| CN111810556B (en) * | 2020-07-20 | 2024-04-26 | 中国矿业大学 | Hydraulic extrusion type magnetorheological fluid clutch |
| CN114734084A (en) * | 2022-02-14 | 2022-07-12 | 上海应用技术大学 | Control system applied to billet shearing machine and billet shearing machine |
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| US4227861A (en) * | 1979-02-14 | 1980-10-14 | General Motors Corporation | Cooling fan with viscous-magnetic fan clutch |
| CN85203125U (en) * | 1985-07-27 | 1986-06-11 | 第二汽车制造厂 | Silicon oil fan clutch with oil scraping pin |
| CN102878225A (en) * | 2012-10-14 | 2013-01-16 | 吉林大学 | Multiple-piece magneto-rheological fluid torque transferring device |
| CN104019152A (en) * | 2014-06-11 | 2014-09-03 | 浙江师范大学 | Piston-type magneto-rheological clutch |
| CN104114893A (en) * | 2012-02-08 | 2014-10-22 | 博格华纳公司 | Fluid friction clutch |
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2016
- 2016-01-31 CN CN201610076992.5A patent/CN105545982B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227861A (en) * | 1979-02-14 | 1980-10-14 | General Motors Corporation | Cooling fan with viscous-magnetic fan clutch |
| CN85203125U (en) * | 1985-07-27 | 1986-06-11 | 第二汽车制造厂 | Silicon oil fan clutch with oil scraping pin |
| CN104114893A (en) * | 2012-02-08 | 2014-10-22 | 博格华纳公司 | Fluid friction clutch |
| CN102878225A (en) * | 2012-10-14 | 2013-01-16 | 吉林大学 | Multiple-piece magneto-rheological fluid torque transferring device |
| CN104019152A (en) * | 2014-06-11 | 2014-09-03 | 浙江师范大学 | Piston-type magneto-rheological clutch |
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| CN105545982A (en) | 2016-05-04 |
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