CN101783575B - Permanent magnet liquid cooling retarder for vehicle - Google Patents
Permanent magnet liquid cooling retarder for vehicle Download PDFInfo
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- CN101783575B CN101783575B CN2010191140446A CN201019114044A CN101783575B CN 101783575 B CN101783575 B CN 101783575B CN 2010191140446 A CN2010191140446 A CN 2010191140446A CN 201019114044 A CN201019114044 A CN 201019114044A CN 101783575 B CN101783575 B CN 101783575B
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Abstract
The invention relates to a permanent magnet liquid cooling retarder for a vehicle, belonging to an auxiliary brake system for a vehicle. The retarder comprises a shell as well as stators (5) and rotors arranged in the shell. The rotors are evenly distributed on a magnet holder (3) by a plurality of tile-shaped permanent magnets (4) along the circumference; the stators (5) are sleeved on the peripheries of the rotors; and a gap is left between the inside diameter of each stator (5) and the outside diameter of each permanent magnet (4). The automobile permanent magnet liquid cooling retarder for a vehicle is characterized in that the stators (5) can slide axially relative to the rotors and are drawn by one or two external-force devices so that the stators (5) and the rotors can be completely staggered from complete overlapping; each of the rotors is connected with an automobile transmission shaft; and each of the stators (5) is further internally provided with a cooling waterway connected with a water tank of an automobile circulation radiator. The invention ensures that a brake torque of the permanent magnet retarder is continuously adjusted as the stator slide axially in the shell, and the invention is safer compared with the traditional eddy current or permanent magnet retarder.
Description
Technical field
The present invention relates to automobile and use EBA, relate in particular to a kind of retarder that utilizes permanent magnet as the employing recirculated water cooling of eddy current braking magnetic source.
Background technology
Retarder is a kind of safe servicing unit of service brake, and it affacts braking force on the system of vehicle transmission parts, plays the effect that reduces automobile driving speed.The retarder that generally adopts both at home and abroad at present mainly contains Retarder and current vortex retarder, although their operation principle is different, as a kind of complemental brake system, its effect is clearly.And the permanent magnet retarder is the permanent magnet formation magnetic field through self, plays retarded acting, therefore almost unregulated power consumption.
The maximum characteristics of permanent-magnet buffer are: 1, can realize significantly lightweight, miniaturization.2, consumes electric power hardly.3, it is overheated that continuous operation self can not produce, and can constantly keep the stability and the persistence of braking force.The strong resistance magnetic field that 4 permanent magnetism are produced has hardware features.5, maintenance is simple, and is non-maintaining.
Existing permanent-magnet speed buffer all is to be made up of stator and rotor; Stator places internal rotor; In along the circumferential direction be equipped with a row fixed permanent magnet and one row rotatable permanent magnet, the identical and parallel placement of two row permanent magnet quantity, same column permanent magnets adjacent polarity is opposite.When two permanent magnet polarity of arrangement arranged side by side were opposite, the magnetic line of force was shielded by yoke, and permanent-magnet speed buffer is in non-on-position; Wherein a row permanent magnet is to certain angle when rotation, and the two permanent magnet polarity of arranging side by side are identical, and the magnetic line of force is through rotor, and permanent-magnet speed buffer is in on-position.Permanent-magnet speed buffer only has braking or two kinds of operating states of non-braking, thereby the driver can not provide required braking moment according to the road conditions and the speed of a motor vehicle, promptly can not realize the grading control of permanent-magnet speed buffer.And stator produces a large amount of heats when braking, and general at present employing is air-cooled, but the wind-cooling heat dissipating weak effect, rotor drum temperature rise when braking for a long time, braking effect descends obviously.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of, in non-contacting stator, produce eddy current braking power, the complemental brake system that automobile is slowed down through rotor rotation.
This device is realized by following technical scheme: a kind of permanent magnet liquid cooling retarder for vehicle; Comprise stator and rotor in shell and the shell; Described rotor is uniformly distributed along the circumference on the magnet retainer by several piece tile shape permanent magnet; Described stator is set on the periphery circle of said rotor, and the inner ring of its stator and the outer ring of permanent magnet maintain the gap, and this gap is good with 0.5-2.0mm; Described stator rotor relatively slides vertically, and affected by 1-2 external force means, affects down in external force means, and stator can be from overlapping to staggering fully fully with rotor; Described rotor is connected with truck drive shaft; Also be provided with the cooling water channel that is connected with automobile cycle heat radiation device water tank in the described stator.
Retarder can be connected to the automobile gearbox back, is close to the automobile gearbox setting.At this moment, an end of the shell of retarder and automobile gearbox disjunctor, output shaft of gear-box is given the magnet retainer through the output shaft flange with transmission of power, passes to truck drive shaft through the power transmission shaft flange again; External force means is arranged on the end of retarder.
Retarder also can be sandwiched between automobile gearbox and the automobile clutch, and two ends are close to automobile gearbox and automobile clutch setting respectively.At this moment, shell one end and automobile gearbox disjunctor, the other end and the automobile clutch disjunctor of retarder.External force means can be arranged on the end of retarder, does not hinder the place of automobile gearbox or automobile clutch; Install for ease, also can be provided with as follows: open 1-2 square opening in the side of shell, establish 1-2 boss on the stator, boss stretches out and is connected with the external force means that is fixed on the shell side from square opening.Rotor is following with being connected of truck drive shaft: the gearbox power shaft is connected with moving clutch discs through spline, and return spring is enclosed within on the gearbox power shaft; The right outer ring and the moving clutch discs of thrust bearing are fixed, and the piston of the switching cylinder of left outer ring and annular is fixed, and switch between cylinder and the piston and pass through seal with O ring; Stretch out the annulus of a band external splines on the moving clutch discs, on moving clutch discs, spline housing is passed through on the spline of magnet retainer inner ring in static friction sheet outer ring to the movable friction plate inner ring through spline housing; The location bearing inner ring passes the gearbox power shaft, and is connected with shell, and the location bearing outer ring is connected with the magnet retainer, makes the magnet retainer coaxial with the gearbox power shaft.
Retarder can also be arranged in the middle of the power transmission shaft, and shell is connected with vehicle frame.At this moment, rotor is following with being connected of truck drive shaft: rotor and independent axes are fastening through spline or flat key structure, and independent axes is fixed in the shell two ends through two location bearings; Independent axes one end is connected with gear box output end power transmission shaft universal joint through the independent axes flange, and the independent axes other end is connected with the power transmission shaft universal joint of truck drive shaft through another independent axes flange; The end of shell is provided with external force means.
The relative rotor of stator slides vertically can be through being connected to the inboard realization of shell with stator with spline; Also can realize as follows: be provided with 3-4 linear bearing structure between stator and the shell, the linear bearing structure is made up of linear bearing and optical axis, and the optical axis two ends are fixed on the retarder two ends, and stator moves on optical axis through linear bearing.Like this, the assurance stator can endwisely slip in the enclosure but can not rotate.
External force means among the present invention can also can be linear electric motors for having the motor of tooth bar output mechanism, and it is the cylinder that is connected with the external controllable source of the gas that its best is selected device for use.
When permanent-magnet speed buffer of the present invention is worked; It is moving to permanent magnet one sideslip that external force means promotes stator, makes stator and rotor overlapping, the magnetic line of force that permanent magnet sends on the stator septum magnet retainer; Can produce eddy current at stator inner surface; And producing the moment that hinders rotor rotation, this braking moment acts on the truck drive shaft through the magnet retainer, thereby automobile is produced braking force.Through regulating the axial location of external force means push rod, regulate the relative axial position of stator and rotor, thereby change stator and the interactional area of permanent magnet can realize that retarder braking moment regulates continuously.The heat that produces on the stator is taken away through liquid in the cooling water channel, liquid and engine cool boiler water circulation in the water channel, and perhaps the independent cooling device with retarder circulates, and is back to the work that moves in circles in the retarder after the heat radiation.
When permanent-magnet speed buffer of the present invention need not braked; External force means is pulled out the permanent magnet end face fully with stator, and stator can not cut the magnetic line of force that permanent magnet sends, and in stator, can not produce eddy current; Power transmission shaft does not receive braking moment, thereby removes the braking to automobile.
Major advantage of the present invention is: endwisely slip in the enclosure through stator, can realize that the permanent-magnet speed buffer braking moment regulates continuously; The stator shaft orientation sliding action is simple, and reliability is high; Permanent magnet and magnet retainer are as rotor, and the outside is parts without spin, compare safer with traditional electrical eddy current or permanent-magnet speed buffer; Stator is provided with liquid cooling apparatus, and good heat dissipation effect is braked the non-moment decline for a long time; The retarder compact overall structure, volume mass is little.
Description of drawings
Structural representation when Fig. 1 is the embodiment of the invention 1 braking.
Structural representation when Fig. 2 is the non-braking of the embodiment of the invention 1.
Structural representation when Fig. 3 is the embodiment of the invention 2 brakings.
Structural representation when Fig. 4 is the non-braking of the embodiment of the invention 2.
Structural representation when Fig. 5 is the embodiment of the invention 3 brakings.
Structural representation when Fig. 6 is the non-braking of the embodiment of the invention 3.
Fig. 7 is a radiating mode sketch map of the present invention.
Fig. 8 is a stator spline connected mode sketch map of the present invention.
Fig. 9 is a linear stator bearing connected mode sketch map of the present invention.
Among the figure: 1, output shaft of gear-box, 2, the output shaft flange, 3, the magnet retainer, 4, permanent magnet, 5, stator, 6, the retarder left end cap, 7, shell; 8, retarder right end cap, 9, cylinder, 10, the power transmission shaft flange, 11, the gearbox power shaft, 12, bell housing, 13, the cylinder support; 14, movable friction plate, 15, the static friction sheet, 16, location bearing, 17, return spring, 18, moving clutch discs, 19, thrust bearing; 20, piston, 21, O shape circle, 22, switch cylinder, 23, the high pressure gas interface, 24, universal joint, 25; The independent axes flange, 26, independent axes, 27, water pipe, 28 engine water tanks, 29, optical axis, 30, linear bearing.
Embodiment
Further specify the present invention below in conjunction with embodiment and accompanying drawing.
The embodiment of the invention 1 is to be used for the structure that retarder is installed body behind the gearbox, like Fig. 1 and Fig. 2.Retarder left end cap 6 is used for connecting location retarder and gearbox, and shell 7 is fixing with retarder left end cap 6, and retarder right end cap 8 is fixing with shell 7.Be provided with the water channel that is used to cool off in the stator 5, fixing 1-2 cylinder 9 on the retarder right end cap 8, the piston of cylinder 9 and stator 5 are fixing.12-20 piece tile shape permanent magnet 4 is uniformly distributed along the circumference on magnet retainer 3, and permanent magnet 4 external diameters and stator drum 5 internal diameters keep the 0.5-2.0mm gap.Output shaft of gear-box 1 is given magnet retainer 3 through output shaft flange 2 with transmission of power, passes to truck drive shaft through power transmission shaft flange 10 again.
When retarder was worked, like Fig. 1, cylinder 9 right side interfaces fed gases at high pressure; Promoting stator 5 breaks away moving to permanent magnet 4 one; The magnetic line of force that permanent magnet 4 sends on the stator 5 septum magnet retainers 3 produces eddy current in stator 5, and produces the moment that hinders rotor rotation; This braking moment acts on the power transmission shaft flange 11 through magnet retainer 3, thereby automobile is produced braking force.
Regulate cylinder 9 internal gas pressures through electromagnetically operated valve, drive stator 5 and endwisely slip in shell 7 inside continuously,, can realize that retarder braking moment is regulated continuously or stepping is regulated through regulating the interaction area size between stator 5 and the permanent magnet 4.
Like Fig. 2, in the time need not braking, cylinder 9 is pulled out permanent magnet 4 right sides fully with stator 5, stator 5 can not septum magnet retainer 3 on the magnetic line of force that sends of permanent magnet 4, power transmission shaft does not receive braking moment, thereby removes the braking to automobile.
As shown in Figure 7, stator 5 is provided with the water pipe head of two places, and the water channel of engine water tank 28, water pipe 27 and stator 5 is formed cooling recirculation system.The heat that produces on the stator 5 during permanent-magnet speed buffer work is taken away through liquid in the cooling water channel, and cooling fluid is back to the work that moves in circles in the retarder through behind the radiator heat-dissipation of engine water tank 28.
Like Fig. 9, change the motion of stator 5 into rolling friction, be provided with 3 linear bearing structures between stator 5 and the shell 7.The linear bearing structure is made up of linear bearing 30 and optical axis 29, and optical axis 29 two ends are fixed on retarder left end cap 6 and the retarder right end cap 8, and stator 5 moves on optical axis 29 through linear bearing 30.
Also available other modes of external force means in the present embodiment realize, like motor etc.
Connect between stator 5 in the present embodiment and the shell 7 and also can realize, like guide rail, dive key and feather key etc. through other modes.
The embodiment of the invention 2 is to be used for retarder to be installed in the structure between gearbox and the clutch, like Fig. 3.Retarder left end cap 6 is fixing with bell housing 12, and cylinder support 13 is fixed on shell 7 circumference, and 1-2 cylinder 9 is fixed on the cylinder support 13, and shell 7 is fixing with retarder right end cap 8, and retarder right end cap 8 is fixed on the gearbox precursor.Have square groove on the circumference of shell 7, stretch out the piston of boss and cylinder 9 on the stator 5 and fix through nut, piston is push-and-pull stator 5 axially, is provided with the water channel that is used to cool off in the stator 5, and is connected with the mode of shell 7 through Fig. 8 or Fig. 9.12-20 piece tile shape permanent magnet 4 is uniformly distributed along the circumference on magnet retainer 3, and permanent magnet 4 external diameters and stator drum 5 internal diameters keep the 0.5-2.0mm gap.Gearbox power shaft 11 is connected with moving clutch discs 18 through spline, and position spring 17 is enclosed within on the gearbox power shaft 11.The right outer ring of thrust bearing 19 and moving clutch discs 18 are fixing, and the piston 20 of the switching cylinder 22 of left outer ring and annular is fixing, switch between cylinder 22 and the piston 20 through 21 sealings of O shape circle.Stretch out the annulus of a band external splines on the moving clutch discs 18, on moving clutch discs 18, spline housing is passed through on the spline of magnet retainer 3 inner rings in static friction sheet 15 outer rings to movable friction plate 14 inner rings through spline housing.Location bearing 16 inner rings pass gearbox power shaft 11, and are connected with shell 7, and location bearing 16 outer rings are connected with magnet retainer 3, make magnet retainer 3 coaxial with gearbox power shaft 11.
When retarder was worked, like Fig. 3, high pressure gas interface 23 charged into gases at high pressure, promoted piston and compressed moving clutch discs 18, movable friction plate 14, static friction sheet 15 and magnet retainer 3 to the right.The power of automobile engine passes to gearbox power shaft 11, moving clutch discs 18, movable friction plate 14, static friction sheet 15 and magnet retainer 3 successively.Switch cylinder 9 right side interfaces and feed gases at high pressure; Promoting stator 5 breaks away moving to permanent magnet 4 one; The magnetic line of force that permanent magnet 4 sends on the stator 5 septum magnet retainers 3; In stator 5, produce eddy current, and produce the moment that hinders rotor rotation, the heat that produces on the stator is taken away through mode as shown in Figure 7.This braking moment acts on the gearbox power shaft 11 through magnet retainer 3, static friction sheet 15, movable friction plate 14 and moving clutch discs 18.Have at gearbox under the situation of gear, this braking moment passes to truck drive shaft through gearbox, thereby automobile is produced braking force.
Regulate cylinder 9 internal gas pressures through electromagnetically operated valve, drive stator 5 and endwisely slip in shell 7 inside continuously,, can realize that retarder braking moment is regulated continuously or stepping is regulated through regulating the crossing area size between stator 5 and the permanent magnet 4.
Like Fig. 4, in the time need not braking, emit the gases at high pressure in the cylinder 22 earlier, will move clutch discs 18 through return spring 16 and push high order end to, movable friction plate 14 unclamps with static friction sheet 15.Magnet retainer 3 does not have the power input, and power transmission shaft does not receive braking moment, thereby removes the braking to automobile.
The embodiment of the invention 3 is to be used for retarder the middle structure of power transmission shaft is installed, and is particularly suitable for being installed on the automobile that has than the long pass moving axis, like Fig. 5.The general-utility car power transmission shaft is divided into two-section, the middle speed buffer structure of installing.Independent axes flange 25 is connected with gear box output end power transmission shaft universal joint 24, and independent axes 26 two ends respectively connect an independent axes flange 25.Through location bearing 16, retarder left end cap 6 keeps coaxial with retarder right end cap 8 and independent axes 25, and is fixed into an integral body with shell 7, and shell 7 is fixed in vehicle frame.Magnet retainer 3 is fastening with independent axes 26, and with independent axes 26 rotations.12-20 piece tile shape permanent magnet 4 is uniformly distributed along the circumference on magnet retainer 3, and permanent magnet 4 external diameters and stator 5 internal diameters keep the 0.5-2.0mm gap.Be provided with the water channel that is used to cool off in the stator 5, be connected with the mode of shell 7 through Fig. 8 or Fig. 9.Fixing 1-2 cylinder 9 on the retarder right end cap 6, the piston of cylinder 9 and stator 5 are fixing.
When retarder is worked; Like Fig. 5, cylinder 9 left side interfaces feed gases at high pressure, promote stator 5 and break away moving to permanent magnet 4 one; The magnetic line of force that permanent magnet 4 sends on the stator 5 septum magnet retainers 3; In stator 5, produce eddy current, and produce the moment that hinders rotor rotation, the heat that produces on the stator is taken away through mode as shown in Figure 7.Braking moment acts on the independent axes 26 through magnet retainer 3.Independent axes 26 passes to power transmission shaft through the independent axes flange with braking moment, thereby automobile is produced braking force.
Regulate cylinder 9 internal gas pressures through electromagnetically operated valve, drive stator 5, can realize that retarder braking moment is regulated continuously or stepping is regulated continuously in shell 7 slides within.
Like Fig. 6, in the time need not braking, cylinder 9 is pulled out permanent magnet 4 left sides fully with stator 5, stator 5 can not septum magnet retainer 3 on the magnetic line of force that sends of permanent magnet 4, power transmission shaft does not receive braking moment, thereby removes the braking to automobile.
Claims (9)
1. permanent magnet liquid cooling retarder for vehicle; Comprise stator (5) and rotor in shell and the shell; Described rotor is uniformly distributed along the circumference on magnet retainer (3) by several piece tile shape permanent magnet (4), and described stator (5) is set on the periphery circle of said rotor, and (4) outer ring of inner ring of this stator (5) and described permanent magnet maintains the gap; Described stator (5) can slide by described relatively rotor vertically; And affected by 1-2 external force means, affect down in external force means, described stator (5) can be from overlapping to staggering fully fully with described rotor; Also be provided with the cooling water channel that is connected with automobile cycle heat radiation device water tank in the described stator (5); It is characterized in that: an end of described shell and automobile gearbox disjunctor, output shaft of gear-box (1) is given magnet retainer (3) through output shaft flange (2) with transmission of power, passes to truck drive shaft through power transmission shaft flange (10) again; Described external force means is arranged on the end of retarder.
2. permanent magnet liquid cooling retarder for vehicle; Comprise stator (5) and rotor in shell and the shell; Described rotor is uniformly distributed along the circumference on magnet retainer (3) by several piece tile shape permanent magnet (4), and described stator (5) is set on the periphery circle of said rotor, and (4) outer ring of inner ring of this stator (5) and permanent magnet maintains the gap; Described stator (5) can slide by described relatively rotor vertically; And affected by 1-2 external force means, affect down in external force means, described stator (5) can be from overlapping to staggering fully fully with described rotor; Also be provided with the cooling water channel that is connected with automobile cycle heat radiation device water tank in the described stator (5); It is characterized in that: described shell one end and automobile gearbox disjunctor, the other end and automobile clutch disjunctor; Described external force means can be arranged on the end of retarder; Also can be provided with as follows: open 1-2 square opening in the side of described shell; Establish 1-2 boss on the described stator (5), boss stretches out and is connected with the external force means that is fixed on the shell side from square opening; Described rotor is connected with truck drive shaft as follows: gearbox power shaft (11) is connected with moving clutch discs (18) through spline; Return spring (17) is enclosed within on the gearbox power shaft (11); The right outer ring of thrust bearing (19) and moving clutch discs (18) are fixing; The piston (20) of the switching cylinder (22) of outer ring, a left side and annular is fixing, switches between cylinder (22) and the piston (20) through O shape circle (21) sealing; Stretch out the annulus of a band external splines on the moving clutch discs (18); Movable friction plate (14) inner ring passes through spline housing on moving clutch discs (18); On the spline of magnet retainer (3) inner ring, location bearing (16) inner ring passes gearbox power shaft (11), and is connected with shell through spline housing in static friction sheet (15) outer ring; Location bearing (16) outer ring is connected with magnet retainer (3), makes magnet retainer (3) coaxial with gearbox power shaft (11).
3. permanent magnet liquid cooling retarder for vehicle; Comprise stator (5) and rotor in shell and the shell; Described rotor is uniformly distributed along the circumference on magnet retainer (3) by several piece tile shape permanent magnet (4), and described stator (5) is set on the periphery circle of said rotor, and (4) outer ring of inner ring of this stator (5) and permanent magnet maintains the gap; Described stator (5) can slide by described relatively rotor vertically; And affected by 1-2 external force means, affect down in external force means, described stator (5) can be from overlapping to staggering fully fully with described rotor; Also be provided with the cooling water channel that is connected with automobile cycle heat radiation device water tank in the described stator (5); It is characterized in that: described retarder places the truck drive shaft middle part; Its shell is connected with vehicle frame; Its rotor is connected with truck drive shaft as follows, and rotor and independent axes (26) are fastening through spline or flat key structure, and this independent axes (26) is fixed in the shell two ends through two location bearings (16); Said independent axes (26) one ends are connected with gear box output end power transmission shaft universal joint (24) through independent axes flange (25), and the other end of independent axes (26) is connected with the power transmission shaft universal joint (24) of truck drive shaft through another independent axes flange (25); In the end of shell described external force means is set.
4. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3, it is characterized in that: said stator (5) is connected to the shell inboard through spline.
5. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3; It is characterized in that: said stator (5) is connected with shell through linear bearing (30): be provided with the linear bearing structure between stator (5) and the shell; The linear bearing structure is made up of linear bearing (30) and optical axis (29); Optical axis (29) two ends are fixed on the retarder two ends, and stator (5) is gone up axial motion through linear bearing (30) at optical axis (29).
6. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3, it is characterized in that: the cylinder (9) of said external force means for being connected with the external controllable source of the gas.
7. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3, it is characterized in that: said external force means is the motor that has the tooth bar output mechanism.
8. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3, it is characterized in that: said external force means is linear electric motors.
9. like each the described permanent magnet liquid cooling retarder for vehicle among the claim 1-3, it is characterized in that: the gap of the permanent magnet outer ring of said stator inner ring and rotor is 0.5-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010191140446A CN101783575B (en) | 2010-02-08 | 2010-02-08 | Permanent magnet liquid cooling retarder for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010191140446A CN101783575B (en) | 2010-02-08 | 2010-02-08 | Permanent magnet liquid cooling retarder for vehicle |
Publications (2)
| Publication Number | Publication Date |
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| CN101783575A CN101783575A (en) | 2010-07-21 |
| CN101783575B true CN101783575B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010191140446A Expired - Fee Related CN101783575B (en) | 2010-02-08 | 2010-02-08 | Permanent magnet liquid cooling retarder for vehicle |
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| CN (1) | CN101783575B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9735654B2 (en) * | 2011-03-09 | 2017-08-15 | Stridsberg Innovation Ab | Cooled magnet motor |
| CN102185462A (en) * | 2011-04-11 | 2011-09-14 | 北京工业大学 | Rotor cooling type automobile permanent magnet liquid cooling retarder |
| CN103812304A (en) * | 2012-11-07 | 2014-05-21 | 常州先进制造技术研究所 | Stator salient pole structure of permanent magnetic eddy retarder capable of minimizing magnetic leakage |
| CN102951028A (en) * | 2012-11-09 | 2013-03-06 | 覃黎 | Magnetic-eddy current effect automobile brake device |
| CN108162767B (en) * | 2017-12-31 | 2020-01-31 | 中国能源建设集团华东电力试验研究院有限公司 | Deceleration braking device |
| CN112072892A (en) * | 2020-08-27 | 2020-12-11 | 江苏师范大学 | Liquid-cooled permanent magnet turbine coupling |
| CN117175889B (en) * | 2023-11-03 | 2024-01-23 | 东北大学 | Permanent-magnet retarder capable of automatically adjusting braking torque through air cooling |
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2010
- 2010-02-08 CN CN2010191140446A patent/CN101783575B/en not_active Expired - Fee Related
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| CN101783575A (en) | 2010-07-21 |
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Granted publication date: 20120523 Termination date: 20130208 |