CN108775353A - A kind of liquid that blade has current vortex function concurrently replies conjunction retarder by cable - Google Patents
A kind of liquid that blade has current vortex function concurrently replies conjunction retarder by cable Download PDFInfo
- Publication number
- CN108775353A CN108775353A CN201810718607.1A CN201810718607A CN108775353A CN 108775353 A CN108775353 A CN 108775353A CN 201810718607 A CN201810718607 A CN 201810718607A CN 108775353 A CN108775353 A CN 108775353A
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- China
- Prior art keywords
- retarder
- stator
- rotor
- blade
- liquid
- Prior art date
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Classifications
-
- 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
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
Abstract
The liquid for having current vortex function concurrently the invention discloses a kind of blade replies conjunction retarder by cable, belongs to Non-contact vehicle brake field.Circle structure being recycled with stator using the rotor of conventional fluid torque retarder and being transformed design, blade wall surface controls fluid flowing, changes fluid momentum square, retains Retarder function；Its blade integrally has both magnetic conduction function, retarder interior design magnet exciting coil excitation, and blade forms magnetic circuit as a part for closed magnetic circuit, attached electric vortex buffering function when magnet exciting coil works for retarder.Above-mentioned design is while retaining original hydrodynamic retarding function, so that the retarder merges electric vortex buffering function by same blade construction after optimization, successful design goes out a kind of full speed section high quality power density, quick response, simple in structure, highly integrated liquid and replies conjunction retarder by cable.
Description
Technical field
The liquid for having current vortex function concurrently the present invention relates to a kind of blade replies conjunction retarder by cable, belongs to Non-contact vehicle braking
Field.
Background technology
Retarder be it is a kind of for heavy vehicle lower long slope when brake force it is insufficient and frequently foundation brakes caused by braking and
The problems such as train serious wear and the safety aid researched and developed, it is using contactless mode by Braking in vehicle
On transmission parts, plays the role of consumption and be harmful to energy, reduce Vehicle Speed.At present applied to main on heavy vehicle
It is current vortex retarder and Retarder two major classes.
The operation principle of traditional current vortex retarder is：Metal surface when doing cutting magnetic induction line movement, air gap flux density with
The rotation of rotor and generating period changes, vortex potential, the vortex institute shape are generated within the scope of stator surface and certain depth
It interacts at magnetic field and air-gap field, generates braking moment；The kinetic energy of vehicle is disappeared by this medium reverts of magnetic field for thermal energy
It consumes, and then plays the role of non-contact brake.
The operation principle of conventional fluid torque retarder is：When Retarder works, compressed air enters storage through solenoid valve
Working solution in fuel reserve tank is pressed into through oil circuit in retarder by fuel tank, and rotor banding moves working solution and rotates about the axis；Meanwhile it working
Liquid is moved along direction blade, is got rid of to stator；Stator vane generates reaction to working solution, and working solution outflow stator turns round impact again
Rotor forms the moment of resistance to rotor, hinders rotor rotation, to realize the braking action to vehicle.
That there are power densities is low for existing current vortex retarder, and structure size is larger, needs to increase to meet brake power of vehicle
The diameter and quality for powering up eddy current retarder, reduce the economy of vehicle transport；The shortcomings that Retarder is then in low speed
Lower braking power is smaller, and the response time is long.Based on such situation, there is liquid and reply conjunction retarder by cable, such retarder is by electric whirlpool
It in same structure, in conjunction with the two feature, is realized with the two different system design integrations in hydrodynamic retarding part the slow part of stream
It the operation of retarder full speed section high power density and is enable to respond quickly.However, such retarder is really relatively only by two sets
What vertical electric vortex buffering and hydrodynamic retarding system were constituted, still remain complicated, the features such as power density is low.
To further increase retarder full speed section power density, the liquid for having current vortex function concurrently using a kind of blade replies conjunction by cable
Retarder designs, which passes through correction of the flank shape to blade and integrally-built adjustment based on conventional fluid torque speed buffer structure
Electric vortex buffering part is carried out height with hydrodynamic retarding part to merge, stator, rotor structure can complete hydrodynamic retarding work(
Can, and subsidiary electric vortex buffering function.
Invention content
The purpose of the present invention is break through have retarder deficiency, the innovative rotor using conventional fluid torque retarder with
Stator cycle circle structure is transformed design, and blade wall surface controls fluid flowing, changes fluid momentum square, retains hydrodynamic retarding
Device function；Its blade integrally has both magnetic conduction function, retarder interior design magnet exciting coil excitation, blade as closed magnetic circuit one
Part forms magnetic circuit, attached electric vortex buffering function when magnet exciting coil works for retarder.Above-mentioned design is retaining original liquid
While power slow function so that the retarder passes through the same blade construction after optimization and merges electric vortex buffering function, success
Designing a kind of full speed section high quality power density, quick response, simple in structure, highly integrated New, to reply conjunction by cable slow
Device.
The scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of liquid that blade has current vortex function concurrently replies conjunction retarder by cable, which includes mainly：Rotor, is encouraged at stator
Magnetic coil and control system.
The rotor is disc type overall structure, and the side arrangement Retarder hydraulic circular of disk is justified, hydrodynamic retarding
Blade is distributed in device hydraulic circular circle；The magnetic circuit part of rotor is made of permeability magnetic material, rotor and stator arranged concentric；Work
When, rotor is relative rotation with stator, and rotor is rotated synchronously with transmission shaft.
The stator is revolving body overall structure, and hydraulic circular is made in stator side corresponding with rotor disk cycle circle structure
Circle structure, hydraulic circular, which is justified, is distributed blade in structure, stator side assembles magnet exciting coil, stator and excitation close to transmission shaft position
Coil keeps certain interval, the magnetic circuit part of stator to use permeability magnetic material system with respect to rack remains stationary between stator and rotor
It makes.
The blade is made using permeability magnetic material, and blade wall surface controls fluid flowing, changes fluid momentum square, realizes fluid power
Slow function；Blade integrally has both magnetic conduction function, and the part as magnetic circuit forms closed magnetic circuit, and the retarder is made to have electric whirlpool concurrently
Flow slow function.
The magnet exciting coil is to concentrate coiling, and magnet exciting coil is fixed, is sealed on stator, and passes through the fairlead on stator
It draws, magnet exciting coil is powered and is retarder excitation when work, and closed magnetic circuit is formed on stator and rotor.
The liquid that the blade has current vortex function concurrently replies conjunction retarder by cable, and closed magnetic circuit is mainly led by stator, rotor wall
Magnetic part, the gas that gap location is formed between stator and rotor when stator vane, rotor blade and stator and rotor relative movement
Gap is constituted.
The liquid that the blade has current vortex function concurrently replies conjunction retarder by cable, and the fluid path of working solution is：By working solution import
It flows into and send to rotor cycle circle, rotor banding moves working solution and rotates about the axis, and the recycle stream between stator, rotor cycle circle
Dynamic, work converges to retarder bottom when completing, and is exported and is discharged by bottom working solution.
The liquid that the blade has current vortex function concurrently replies conjunction retarder by cable, and a variety of media, including liquid can be used in working solution
Pressure oil, water, coolant liquid etc.；Wherein water, coolant liquid can share same medium with engine-cooling system, and province deoils, hydrothermal exchange
Process simplifies structure.
The control system control working solution import, exit fluid path and the electric current in magnet exciting coil.By controlling work
Liquid import, the working fluid pressure in exit and flow control hydrodynamic retarding part torque；By adjusting the electricity in magnet exciting coil
Size is flowed, the braking moment of electric vortex buffering part is adjusted.
Blade of the present invention have concurrently current vortex function liquid reply by cable close retarder operation principle it is as follows：
When electric vortex buffering part works, magnet exciting coil is passed through electric current, can be fixed since magnet exciting coil is fixed on stator
Magnetic circuit is formed on sub- permeable section.The magnetic line of force separates on stator, is reached between stator and rotor by the blade on stator
Gap location, then reach on the blade of rotor through gap and converged on rotor, finally again by stator and rotor close to transmission axle position
Stator is flowed back in the gap set, and constitutes closed magnetic circuit；The air-gap field formed due to the relative motion between stator and rotor, gap location
Area constantly change, then on the blade of both sides generate vortex, vortex excitation induced field, with former magnetic field phase interaction
With generation braking moment, the braking moment is acted on by rotor connecting member on vehicular transmission shaft, that is, plays non-contact brake
Effect.
When hydrodynamic retarding part works, working solution is sent by import to rotor hydraulic circular circle by external pump, is turned
Subband moves working solution and rotates about the axis, and is circulated between stator, rotor cycle circle, and the braking moment of generation is made by rotor
For transmission shaft, transmission shaft kinetic energy is converted into working solution interior energy.Working solution cycle circle in carry out cycle operation while, also for
Electric vortex buffering partial warm down.Work complete when, working solution converges to retarder bottom, by the other side it is external pump by working solution from
Connector outlet at bottom is discharged.
Stop, to retarder transportation work liquid, working solution being evacuated from retarder when retarder does not work.In retarder
For the liquid-free environment of certain vacuum degree, hydrodynamic retarding part is stopped, and sky damage reduces.Magnet exciting coil powers off, electric vortex buffering
Part is also stopped.
The liquid that a kind of blade has current vortex function concurrently replies conjunction retarder by cable, can be by controlling working solution import, outlet
The torque of the working fluid pressure and flow control hydrodynamic retarding part at place；By adjusting the size of current in magnet exciting coil, adjust
The braking moment of electric vortex buffering part.
Compared with existing retarder, advantage of the present invention is as follows.
The present invention is innovative to lead to retarder fluid power and electric vortex buffering function as a kind of auxiliary brake device for automobile
The same blade construction crossed after optimization is realized；While simplifying structure, the retarder is made to retain original hydrodynamic retarding function,
And electric vortex buffering function is had both, successful design goes out a kind of full speed section high quality power density, quick response, simple in structure, high
The integrated New of degree replies conjunction retarder by cable.
Description of the drawings
Fig. 1 is one principle schematic diagram of embodiment of the present invention, and closure wire frame is one magnetic circuit of embodiment, and arrow is signified
For magnetic circuit loop direction.
Fig. 2 is one axial plane fluid path figure of embodiment of the present invention；
Fig. 3 is two principle schematic diagram of embodiment of the present invention, and closure wire frame is one magnetic circuit of embodiment, and arrow is signified
For magnetic circuit loop direction；
Fig. 4 is two axial plane fluid path figure of embodiment of the present invention；
Fig. 5 is three principle schematic diagram of embodiment of the present invention, and closure wire frame is one magnetic circuit of embodiment, and arrow is signified
For magnetic circuit loop direction；
Fig. 6 is two rotor stereoscopic schematic diagram of embodiment, and the hydraulic circular circle of rotor both sides is symmetrical, hydraulic circular circle
Interior uniformly distributed blade；
Fig. 7 is two stator stereoscopic schematic diagram of embodiment.
In figure：1 control system, 2 side covers, 3 rotors, 4 stators, 5 magnet exciting coils, 6 working solution imports, 7 working solutions are into oral fluid
Road, 8 working solutions export fluid path, the outlet of 9 working solutions.
Specific implementation mode
Principles and features of the present invention are further described below in conjunction with attached drawing.
Embodiment one
As shown in Figure 1, a kind of blade have concurrently current vortex function liquid reply by cable close retarder embodiment one include mainly：
Rotor, stationary part, magnet exciting coil group, control system.The stationary part includes side cover 2, stator 4.The generally disc type of rotor 3
Structure, disk side arrangement conventional fluid torque retarder hydraulic circular circle；Stator 4 is rotary structure, and circle knot is recycled with rotor disk
Make hydraulic circular circle structure in the corresponding side of structure.The embodiment one, side cover are un-conducted magnetic material, and rotor blade is determined
Blades and other magnetic circuit parts are manufactured using permeability magnetic material；The embodiment one, stator vane, rotor blade are by repairing
Shape designs, and the flowing of blade wall surface controllable flow body changes fluid momentum square；Blade integrally has both magnetic conduction function, can be used to form
Closed magnetic circuit.
The embodiment one, stator 4 keep 0.5 millimeter to 1 with respect to rack remains stationary between stator 4 and rotor 3
The gap of millimeter；Transmission shaft is connected with rotor 4, passing power.When work, rotor 3 and 4 arranged concentric of stator, when work, stator
With rotor relative rotation, rotor is rotated synchronously with transmission shaft.Magnet exciting coil group 5 concentrates coiling, seals, is fixed on stator 4, phase
To stator stationary.When electric vortex buffering part works, it is passed through direct current to magnet exciting coil group, generates magnetic field, in stator 4, turned
The closed magnetic circuit of variation, magnetic circuit such as Fig. 1 are formed on gap between sub 3 blades and other permeable sections and stator and rotor
It is shown.When transmission shaft drives rotor 3 to rotate, air-gap field cyclically-varying makes to generate current vortex, electric whirlpool on stator 4 and rotor 3
Stream is equivalent to hot-wire coil, generates induced field, with former magnetic field interaction, generates braking moment, hinders the rotation of transmission shaft,
It absorbs and is harmful to energy, and this portion of energy is converted into thermal energy, consumed by retarder by heat transfer, convection current heat transfer, heat radiation
Fall.
As shown in Fig. 2, the embodiment one, when hydrodynamic retarding part works, fluid path 7 is will using the external pump of import
Working solution by import 6 input and send to rotor hydraulic circular circle in, rotor banding move working solution rotate about the axis, and stator, turn
It is circulated between subcycle circle, generates braking moment；Also it is current vortex while working solution carries out cycle operation in cycle circle
Slow partial warm down.When work is completed, working solution converges to retarder bottom by shown in retarder outlet fluid path 8, by the other side
Working solution is discharged external pump from connector outlet at bottom 9.
The embodiment one can pass through control working solution import, the working fluid pressure and flow control fluid power in exit
The torque of slow part；By adjusting the size of current in magnet exciting coil, the braking moment of electric vortex buffering part is adjusted.
Embodiment two
As shown in figure 3, the liquid that a kind of blade has current vortex function concurrently replies the embodiment two for closing retarder and embodiment party by cable
Case one is compared, and the symmetric design of both sides stator, center roller and twin coil group is mainly changed on the basis of one-sided configuration
Scheme, to balance the axial attraction between unilateral stator and rotor；Axial dimension is effectively reduced simultaneously, optimizes whole knot
Structure improves braking effect.As shown in Figure 6：Rotor is the conventional fluid torque retarder fluid power rotor disc structure that both sides are arranged symmetrically；Such as
Shown in Fig. 7：Stator is identical as stator structure described in embodiment one, but it is symmetrical two stators to increase.
The embodiment two, compared with embodiment one, specific improve is：Side cover is removed, right side stator is changed to
With intermediate connector two parts made of un-conducted magnetic material, arranged on left and right sides stator relative vehicle rack is static, at the same with connect
Part is fixed；It is arranged symmetrically conventional fluid torque retarder hydraulic circular circle in rotor discs both sides, ensures both sides stator and center roller
Between gap be 0.5 millimeter to 1 millimeter, as shown in Figure 3；Two groups of magnet exciting coils are sealed, are fixed on the stator of both sides respectively, and
Relative stator is static.When electric vortex buffering part works, it is passed through reversed direct current to two groups of magnet exciting coils, generates magnetic field,
Two groups etc. are formed on right side stator, left side stator, the blade on rotor and the gap between permeable section and stator and rotor
Greatly, reversed closed magnetic circuit, magnetic circuit are as shown in Figure 3.
As shown in figure 4, working solution is inputted and is sent by import when hydrodynamic retarding part works by the embodiment two
To rotor both sides hydraulic circular circle；When work is completed, working solution converges to retarder bottom by both sides hydraulic circular circle, from even
Fitting outlet at bottom is discharged.
Embodiment three
As shown in figure 5, the liquid that a kind of blade has current vortex function concurrently replies the embodiment three for closing retarder and embodiment party by cable
Case two is compared, and the design scheme of big closed magnetic circuit is mainly changed on the basis of 2 two groups of small closed magnetic circuits of embodiment, and
Two structure of embodiment is optimized accordingly.
The embodiment three is passed through direct current in the same direction when its electric vortex buffering part works to two groups of magnet exciting coils,
Generate magnetic field, on left side stator, right side stator, rotor blade and permeable section and stator and rotor between gap
For a big closed magnetic circuit is integrally formed, magnetic circuit is as shown in Figure 5.
Shown embodiment three, hydrodynamic retarding part and embodiment two are almost the same.
Claims (9)
1. the liquid that a kind of blade has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：The retarder includes mainly：Turn
Son, stator, magnet exciting coil and control system；
The rotor is disc type overall structure, and the side arrangement Retarder hydraulic circular of disk is justified, Retarder liquid
Blade is distributed in power cycle circle；The magnetic circuit part of rotor is made of permeability magnetic material, rotor and stator arranged concentric；When work,
Rotor is relative rotation with stator, and rotor is rotated synchronously with transmission shaft；
The stator is revolving body overall structure, and stator side corresponding with rotor disk cycle circle structure is made hydraulic circular circle and tied
Structure, hydraulic circular, which is justified, is distributed blade in structure, stator side assembles magnet exciting coil, stator and magnet exciting coil close to transmission shaft position
Opposite rack remains stationary keeps certain interval, the magnetic circuit part of stator to be manufactured using permeability magnetic material between stator and rotor；Institute
State the import of control system control working solution, exit fluid path and the electric current in magnet exciting coil；By controlling working solution import, outlet
The torque of the working fluid pressure and flow control hydrodynamic retarding part at place；By adjusting the size of current in magnet exciting coil, adjust
The braking moment of electric vortex buffering part.
2. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Institute
It states blade to be made using permeability magnetic material, blade wall surface controls fluid flowing, changes fluid momentum square, realizes hydrodynamic retarding function；
Blade integrally has both magnetic conduction function, and the part as magnetic circuit forms closed magnetic circuit, and the retarder is made to have electric vortex buffering work(concurrently
Energy.
3. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Institute
It is to concentrate coiling, magnet exciting coil to fix, be sealed on stator, and drawn by the fairlead on stator to state magnet exciting coil, work
When magnet exciting coil be powered and be retarder excitation, form closed magnetic circuit on stator and rotor.
4. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Institute
It states blade and has the liquid of current vortex function concurrently and reply conjunction retarder by cable, closed magnetic circuit is mainly by stator, rotor wall permeable section, stator
The air gap that gap location is formed between stator and rotor when blade, rotor blade and stator and rotor relative movement is constituted.
5. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Institute
It states blade and has the liquid of current vortex function concurrently and reply conjunction retarder by cable, the fluid path of working solution is：Flowed by working solution import and send to
In rotor cycle circle, rotor banding moves working solution and rotates about the axis, and is circulated between stator, rotor cycle circle, and work is completed
When converge to retarder bottom, by bottom working solution export be discharged.
6. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Institute
It states blade and has the liquid of current vortex function concurrently and reply conjunction retarder by cable, working solution can be used a variety of media, including hydraulic oil, water, cold
But liquid etc.；Wherein water, coolant liquid can share same medium with engine-cooling system, and province deoils, hydrothermal exchange process, simplifies knot
Structure.
7. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：Electricity
When the slow part of vortex works, magnet exciting coil is passed through electric current, can be in stator permeable section since magnet exciting coil is fixed on stator
Upper formation magnetic circuit；The magnetic line of force separates on stator, reaches the gap location between stator and rotor by the blade on stator, then pass through
Gap reaches on the blade of rotor and is converged on rotor, is finally flowed back to again close to the gap of transmission shaft position with rotor by stator
Stator constitutes closed magnetic circuit；Due to the relative motion between stator and rotor, the area for the air-gap field that gap location is formed constantly is sent out
Changing, then generates vortex on the blade of both sides, and vortex excitation induced field generates brake force with former magnetic field interaction
Square, the braking moment are acted on by rotor connecting member on vehicular transmission shaft, that is, play the role of non-contact brake；
When hydrodynamic retarding part works, working solution is sent by import to rotor hydraulic circular circle by external pump, rotor banding
Dynamic working solution rotates about the axis, and is circulated between stator, rotor cycle circle, and the braking moment of generation is acted on by rotor
Transmission shaft, transmission shaft kinetic energy are converted into working solution interior energy；Also it is electric whirlpool while working solution carries out cycle operation in cycle circle
Flow slow partial warm down；When work is completed, working solution converges to retarder bottom, by the external pump in the other side by working solution from connection
Part outlet at bottom is discharged.
8. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：It is slow
Stop, to retarder transportation work liquid, working solution being evacuated from retarder when fast device does not work；It is certain vacuum in retarder
The liquid-free environment of degree, hydrodynamic retarding part are stopped, and sky damage reduces；Magnet exciting coil powers off, and electric vortex buffering part also stops
Work.
9. the liquid that a kind of blade according to claim 1 has current vortex function concurrently replies conjunction retarder by cable, it is characterised in that：It is logical
Cross control working solution import, exit working fluid pressure and flow control hydrodynamic retarding part torque；By adjusting excitation
Size of current in coil adjusts the braking moment of electric vortex buffering part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810718607.1A CN108775353B (en) | 2018-07-01 | 2018-07-01 | A kind of liquid that blade has current vortex function concurrently replies conjunction retarder by cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810718607.1A CN108775353B (en) | 2018-07-01 | 2018-07-01 | A kind of liquid that blade has current vortex function concurrently replies conjunction retarder by cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775353A true CN108775353A (en) | 2018-11-09 |
| CN108775353B CN108775353B (en) | 2019-10-29 |
Family
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128276A (en) * | 2020-09-09 | 2020-12-25 | 常州机电职业技术学院 | Electromagnetic hydraulic composite braking retarding device and braking method thereof |
| WO2022051934A1 (en) * | 2020-09-09 | 2022-03-17 | 常州机电职业技术学院 | Electromagnetic-hydraulic composite braking retarding device, and braking method thereof |
| CN114962498A (en) * | 2022-06-13 | 2022-08-30 | 安阳工学院 | Single-coil hydraulic-electric composite retarder with stator connecting piece having salient pole structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112128276A (en) * | 2020-09-09 | 2020-12-25 | 常州机电职业技术学院 | Electromagnetic hydraulic composite braking retarding device and braking method thereof |
| WO2022051934A1 (en) * | 2020-09-09 | 2022-03-17 | 常州机电职业技术学院 | Electromagnetic-hydraulic composite braking retarding device, and braking method thereof |
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| CN114962498A (en) * | 2022-06-13 | 2022-08-30 | 安阳工学院 | Single-coil hydraulic-electric composite retarder with stator connecting piece having salient pole structure |
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| Publication number | Publication date |
|---|---|
| CN108775353B (en) | 2019-10-29 |
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