CN101119060A - Eddy current permanent-magnet speed buffer - Google Patents
Eddy current permanent-magnet speed buffer Download PDFInfo
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- CN101119060A CN101119060A CNA2007100697665A CN200710069766A CN101119060A CN 101119060 A CN101119060 A CN 101119060A CN A2007100697665 A CNA2007100697665 A CN A2007100697665A CN 200710069766 A CN200710069766 A CN 200710069766A CN 101119060 A CN101119060 A CN 101119060A
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Abstract
The present invention relates to an eddy current permanent magnetism retarder, comprising a stator of a dead permanent magnet and a rotor which dose not rotates when non-retarding, the stator of a dead permanent magnet is coupled with a casing or a connecting support of a gearbox, and equispaced permanent magnets are distributed in the circumference direction, the non-permeability magnetic material is arranged between the two adjacent permanent magnets. The polarities of the two adjacent permanent magnets are contrary. The rotor is arranged outside the stator and supported at a rotation axis through a bearing, and an inertial type of synchronizer is arranged at the left end of the rotation axis. In normal condition, the inertial type of synchronizer breaks away from the rotor, and in the retarder location, the inertial type of synchronizer is combined with the rotor, the rotor is rotating corresponding to the stator. The rotor produces a braking moment. The invention has the advantages that the car dose not consume the energy when running, and the rotor is arranged outside the stator, timely emitting the heat caused by the rotor, cutting out the heat sink needed by the stator, simplifying the structure, and reducing the volume of the whole eddy current permanent magnetism retarder and protecting the enough moment used for retarding at the same time.
Description
Technical field
The present invention relates to a kind of automobile-used complemental brake system, particularly a kind of eddy current permanent-magnet speed buffer of eliminating non-when braking consumes energy.
Background technology
Automobile retarder is a kind of servicing unit of service brake, and it affacts braking force on the output shaft, reduces the travel speed of automobile, thereby improves the stationarity of brake and the driving safety of automobile.The vortex flow retarder of the permanent magnet that adopts plays retarded acting by the permanent magnet formation magnetic field generation braking moment of self at present, therefore have the advantage that body is light, energy-conservation in a small amount and retardation efficiency is high, the automobile retarder of comparing other types has potential advantages.
U.S. Patent number 5337862 disclosed eddy current retarders are a kind of typical permanent magnet retarders, this patent along the circumferential direction has two row permanent magnets side by side, one row maintain static, the along the circumferential direction rotatable certain angle of one row, by rotating a row permanent magnet loop in magnetic field is changed, thereby realize the work of retarder and the switching of non operating state, the shape bigger than two ends in the middle of magnetic conductive material part in the magnet retainer becomes with non-magnetic material partial design, two row permanent magnets are designed to corresponding shape.Though it can reach the defective that reduces leakage field in theory, the axial two ends of permanent magnet are still bigger at circumferential leakage field, and complex structure in addition, the part of permanent magnet are made and the unusual difficulty of assembling, and cost is high.Under non-on-position, therefore its retarder rotor of the vehicle that travels can consume the unnecessary rotary power of rotor all the time in rotation in addition, makes the oil consumption of engine increase.
The disclosed eddy current speed reducer of Chinese patent literature CN1320999A is fixed with the stator of the tubular that is formed by the ferromagnetism body on the housing of speed changer; The rotor that is positioned at stator interior and has a tubular that constitutes at the equally spaced a plurality of magnet of circumferencial direction, by magnetic is bearing on the rotating shaft by bearing, between rotating shaft and rotor, be equipped with clutch mechanism, connect clutch mechanism in when braking, the vortex flow that causes by the magnetic field that arrives stator from magnet and produce braking force at rotor.Because eddy current speed reducer rotor when non-braking does not rotate, therefore can reduce heat waste and improve the thermal cycle life of stator, but itself since stator surrounding outside rotor, therefore the volume of total is bigger, and because the heat radiation of rotor is relatively more difficult, therefore air ring can only be set in stator, thereby complex structure, volume are increased.
Summary of the invention
Technical problem to be solved by this invention be overcome the above-mentioned deficiency of prior art and provide simple in structure, volume is little, non-braking the time does not increase the oil consumption of engine eddy current permanent-magnet speed buffer.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
Eddy current permanent-magnet speed buffer, stator and the one non-rotary rotor when non-braking that comprises fixing permanent magnet, the stator of fixing permanent magnet is with the shell of gearbox or be connected the support connection, and be furnished with equally spaced permanent magnet at circumferencial direction, be non-magnet material between adjacent permanent magnets, adjacent permanent magnets polarity is opposite; It is characterized in that: rotor is positioned at the outside of stator and is bearing on the rotating shaft by bearing, left end at rotating shaft has an inertial type of synchronizer, when normal condition, inertia synchronizer and rotor break away from, inertial type of synchronizer engages with rotor when retarder location, rotor rotates with respect to stator, and rotor produces braking moment.
Above-mentioned permanent magnet is a ndfeb magnet.
The outer circumference surface of above-mentioned permanent magnet covers with thin permeability magnetic material, can reduce magnetic resistance and prevent that foreign material from entering.
Because rotor rotates with respect to stator, rotor produces braking moment to above-mentioned eddy current permanent-magnet speed buffer, makes car deceleration when braking.
Above-mentioned rotor outer ring is along circumferential array tooth or other analogs at interval, and the heat of being convenient to produce on the rotor in time distributes.
Compared with prior art, the invention has the advantages that: because it still keeps rotor and does not rotate when non-braking, rotor is cutting magnetic line not, does not produce eddy current, thereby can not increase the oil consumption of engine, but energy savings.And by rotor is arranged on outside the stator, can in time the heat that produces on the rotor be distributed, omitted the heat abstractor that needs on the stator, simplified structure.When guaranteeing the enough moment of slow usefulness, can dwindle the volume of whole eddy current permanent-magnet speed buffer simultaneously.
Description of drawings
Fig. 1 is the structural representation of embodiment of the invention eddy current permanent-magnet speed buffer.
Fig. 2 is the stator of eddy current permanent-magnet speed buffer among Fig. 1 and the permanent magnet distribution map between rotor.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, eddy current speed reducer comprises cylindric stator 1 and non-rotary rotor 2 when non-braking of fixing permanent magnet.
Said stator 1 its base portion is fixed on gear box casing or the link 3 by screw 4, fixing Nd-Fe-B permanent magnet 11 on its support 12, and it is along the circumferential direction uniformly-spaced uniform, 11 of adjacent Nd-Fe-B permanent magnets are non-magnet material 15, adjacent permanent magnets 11 polarity are opposite, see Fig. 2, outer circumference surface covers with thin magnetic conductive board 14 on the Nd-Fe-B permanent magnet 11, and Nd-Fe-B permanent magnet 11 2 sides are non-magnetizer end cap 12 fixedly.Seal by sealing ring 9 between the axial region of stator 1 and rotor 2.
The axial region 21 of above-mentioned rotor 2 its hollows can be rotated to support on the root that connects power transmission shaft 8 by bearing 71, and 71 on bearing is separated by distance collar 73, and spacing by end ring 74.Connect power transmission shaft 8 roots by spline housing on output shaft of gear-box 6, and be fixed on output shaft of gear-box 5 one ends by nut 10.Between the axial region 21 of rotor and the axial region that connects power transmission shaft 8 by ring sealing part 72 sealings.
Above-mentioned rotor 2 places outside the stator 1 with stator 1 corresponding part cylindraceous, and cylindric corresponding with stator.
Eddy current speed reducer is installed on the root that connects power transmission shaft 8, the root of power transmission shaft 8 is again by spending strong being entrenched on the output shaft of gear-box 6, at the left end that connects power transmission shaft 8 one inertial type of synchronizer 5 is arranged, by inertia synchronizer 5 can make rotor axial region 21 with connect between the power transmission shaft 8 fixing or separate, because inertia synchronizer 5 structures are more common, therefore no longer elaborate.When normal condition, inertia synchronizer 5 breaks away from rotor 2 axial regions 21.Inertial type of synchronizer 5 engages with rotor 2 when retarder location, and rotor 2 is with respect to stator 1 rotation.
Connect 8 of power transmission shafts and represented the left side, the right-hand part that connects power transmission shaft 8 combines with universal joint, and is not shown in the drawings, and output shaft of gear-box 6 passes to universal joint drive wheels rotation again by power transmission shaft 8.
Under non-on-position shown in Figure 1, inertia synchronizer 5 leaves with rotor 2, and the rotation of rotating shaft 6 does not just pass to rotor 2, and by the attraction between the magnet 11 of rotor 2 and stator 1, rotor 21 just keeps inactive state.
During braking, inertia synchronizer 5 engages with rotor 2, and the rotation of output rotating shaft 6 is transmitted to rotor 21 by connecting power transmission shaft 8, thereby the relative position of stator and rotor changes, and the magnetic field on the stator produces braking moment to rotor generation effect on rotor.And when usual, inertia synchronizer 5 leaves with rotor 2, and the rotation of output rotating shaft 6 can not transmitted to rotor 21 by connecting power transmission shaft 8, so output rotating shaft 6 does not have any power loss.Because the braking principle of eddy current permanent-magnet speed buffer of the present invention is known by the people, is not described in detail at this.
Claims (3)
1. eddy current permanent-magnet speed buffer, stator and the one non-rotary rotor when non-braking that comprises fixing permanent magnet, the stator of fixing permanent magnet is with the shell of gearbox or be connected the support connection, and be furnished with equally spaced permanent magnet at circumferencial direction, be non-magnet material between adjacent permanent magnets, adjacent permanent magnets polarity is opposite; It is characterized in that: rotor is positioned at the outside of stator and is bearing on the rotating shaft by bearing, left end at rotating shaft has an inertial type of synchronizer, when normal condition, inertia synchronizer and rotor break away from, inertial type of synchronizer engages with rotor when retarder location, rotor rotates with respect to stator, and rotor produces braking moment.
2. eddy current permanent-magnet speed buffer according to claim 1 is characterized in that: the outer circumference surface of described permanent magnet covers with thin permeability magnetic material.
3. eddy current permanent-magnet speed buffer according to claim 1 is characterized in that: described rotor outer ring is along circumferential array tooth at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697665A CN101119060A (en) | 2007-06-27 | 2007-06-27 | Eddy current permanent-magnet speed buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697665A CN101119060A (en) | 2007-06-27 | 2007-06-27 | Eddy current permanent-magnet speed buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101119060A true CN101119060A (en) | 2008-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100697665A Pending CN101119060A (en) | 2007-06-27 | 2007-06-27 | Eddy current permanent-magnet speed buffer |
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| CN (1) | CN101119060A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065235A (en) * | 2014-07-02 | 2014-09-24 | 泰乐玛汽车制动系统（上海）有限公司 | Retarder used for automobile |
| CN104283400A (en) * | 2013-07-01 | 2015-01-14 | 陈立铭 | Electricity generation energy dissipation braking type automobile retarder |
| CN104691342A (en) * | 2015-03-10 | 2015-06-10 | 山东交通学院 | Wheel edge speed reducing device for trailer/semi-trailer and control method thereof |
| CN106130313A (en) * | 2016-07-22 | 2016-11-16 | 山东交通学院 | A kind of torque permanent magnet retarder |
| CN106160402A (en) * | 2016-07-22 | 2016-11-23 | 山东交通学院 | A kind of permanent-magnet speed buffer being automatically adjusted braking moment |
| CN108233670A (en) * | 2016-12-13 | 2018-06-29 | 郑州宇通客车股份有限公司 | Current vortex retarder and the vehicle using the current vortex retarder |
| CN113497534A (en) * | 2020-04-06 | 2021-10-12 | 丰田自动车株式会社 | Rotating electric machine with retarder |
| CN114696568A (en) * | 2022-03-29 | 2022-07-01 | 安徽理工大学 | Mixed excitation eddy current speed regulation device |
-
2007
- 2007-06-27 CN CNA2007100697665A patent/CN101119060A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283400A (en) * | 2013-07-01 | 2015-01-14 | 陈立铭 | Electricity generation energy dissipation braking type automobile retarder |
| CN104065235A (en) * | 2014-07-02 | 2014-09-24 | 泰乐玛汽车制动系统（上海）有限公司 | Retarder used for automobile |
| CN104691342A (en) * | 2015-03-10 | 2015-06-10 | 山东交通学院 | Wheel edge speed reducing device for trailer/semi-trailer and control method thereof |
| CN106130313A (en) * | 2016-07-22 | 2016-11-16 | 山东交通学院 | A kind of torque permanent magnet retarder |
| CN106160402A (en) * | 2016-07-22 | 2016-11-23 | 山东交通学院 | A kind of permanent-magnet speed buffer being automatically adjusted braking moment |
| CN106160402B (en) * | 2016-07-22 | 2018-09-21 | 山东交通学院 | A kind of permanent-magnet speed buffer automatically adjusting braking moment |
| CN106130313B (en) * | 2016-07-22 | 2019-04-16 | 山东交通学院 | A kind of increasing torque permanent magnet retarder |
| CN108233670A (en) * | 2016-12-13 | 2018-06-29 | 郑州宇通客车股份有限公司 | Current vortex retarder and the vehicle using the current vortex retarder |
| CN113497534A (en) * | 2020-04-06 | 2021-10-12 | 丰田自动车株式会社 | Rotating electric machine with retarder |
| CN113497534B (en) * | 2020-04-06 | 2023-07-18 | 丰田自动车株式会社 | Rotating electrical machine with retarder |
| CN114696568A (en) * | 2022-03-29 | 2022-07-01 | 安徽理工大学 | Mixed excitation eddy current speed regulation device |
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Open date: 20080206 |