CN201234202Y - Pre-positioning liquid cooling permanent magnet retarder for transmission - Google Patents
Pre-positioning liquid cooling permanent magnet retarder for transmission Download PDFInfo
- Publication number
- CN201234202Y CN201234202Y CNU200820127462XU CN200820127462U CN201234202Y CN 201234202 Y CN201234202 Y CN 201234202Y CN U200820127462X U CNU200820127462X U CN U200820127462XU CN 200820127462 U CN200820127462 U CN 200820127462U CN 201234202 Y CN201234202 Y CN 201234202Y
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- permanent
- retarder
- rotor
- magnet
- stator
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Abstract
The utility model relates to a permanent-magnet retarder. The structure of the retarder comprises a stator, a rotor and a control mechanism. The rotor consists of a plurality of permanent magnets and a magnet retainer, and can be rotationally arranged in the stator. The control mechanism is positioned inside the rotor and used for operating and control the braking state. In the utility mode, the permanent-magnet retarder is arranged between an automobile clutch and a gear box, and the braking effect of the retarder on an automobile is enhanced through the speed reducing function (that is, torque amplification) of the gear box; the permanent-magnet retarder is arranged on the outer side of the rotor, and a rotating part is arranged inside the rotor, so that the permanent-magnet retarder is safer, compared with a traditional permanent-magnet retarder or a current vortex retarder; the rotor of the permanent-magnet retarder is provided with a liquid cooling device so that the heat dissipation effect is good, and the brake torque does not declines when the permanent-magnet retarder does not operate for a long time; a control mechanism of the permanent-magnet retarder adopts the traditional frictional plate type, so that the shift of braking state can be easily realized, and no magnetic leakage torque is generated in the non-braking period; and the permanent-magnet retarder has the advantages of compact structure and small volume and mass.
Description
Technical field
The utility model is to utilize neodymium-iron-boron permanent magnet as the eddy current braking magnetic source, by the reverse eddy current braking power in rotation and noncontact generation, to the complemental brake system that automobile slows down, refers in particular to a kind of liquid cooling permanent-magnetic retarder that places the gearbox front end.
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 mainly contains Retarder and current vortex retarder at present, 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 by self, plays retarded acting, therefore almost unregulated power consumption.
The maximum characteristics of permanent-magnet buffer are: 1, can realize significantly lightweight, miniaturization.2, consume 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.4, the strong resistance magnetic field that permanent magnetism produced has hardware features.5, non-maintaining.
The tradition permanent-magnet speed buffer all is to be made 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 are identical side by side, and the magnetic line of force is by rotor, and permanent-magnet speed buffer is in on-position.These permanent-magnet speed buffer structures all are mounted on output shaft of gear-box or the back axle, need retarder to produce bigger braking moment during car brakeing and just can reach the brake purpose; Their stator all is the support that permanent magnet is housed, and the rotor that has helical teeth is in the rotation of stator outside, and by the air-cooled heat radiation purpose that reaches, these structure radiating effects are poor, rotor drum temperature rise when braking for a long time, and braking effect descends obviously; And all be by rotating or mobile permanent magnet reaches the purpose of control magnetic circuit, this control mode not only makes the permanent-magnet speed buffer complex structure, functional reliability is low, and has leakage field moment when non-braking.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of pre-positioning liquid cooling permanent-magnetic retarder for gear box is provided, and has compact conformation, volume mass is little, and braking moment is big, magnetic leakage free moment during non-braking, good heat dissipation effect, advantage such as brakeless moment decline when working long hours.
It is realized by following technical scheme:
Its structure of the utility model comprises stator, rotor and controlling organization.Stator is by the clutch end cap, and gearbox cover and stator drum are formed.Rotor is made up of plurality of permanent magnets and magnet retainer, connects by bearing and gearbox cover, and rotor rotatably places in the stator.Controlling organization is positioned at internal rotor, is used for controlling of on-position.
Described permanent-magnet speed buffer structure places between automobile clutch and the gearbox, and the gearbox input shaft rotational speed generally is higher than its output shaft, helps increasing its braking moment and braking power on the gearbox power shaft so retarder places.
Described stator drum is provided with Control device of liquid cooling, and the stator drum was gone up the heat that produces and taken away brakeless moment decline when permanent-magnet speed buffer works long hours when liquid can be worked permanent-magnet speed buffer in the cooling device.Behind the radiator heat-dissipation of liquid through being independent of retarder, be back to the work that moves in circles in the retarder.
Described controlling organization is made up of cylinder, piston, thrust bearing, clutch discs, friction plate and return spring.Cylinder is fixed on gearbox cover or clutch end covers, clutch discs connects by spline and gearbox power shaft, piston promotes clutch discs by thrust bearing and slides on the gearbox power shaft, and return spring is fixed on the gearbox power shaft, can promote the clutch discs return.
When permanent-magnet speed buffer of the present utility model is braked, feed gases at high pressure in the cylinder, cylinder promotes clutch discs and slides on power shaft, and compression retracteding position spring, and clutch discs combines with rotor by friction plate, rotor and clutch discs are rotated with the gearbox power shaft, the magnetic line of force that stator drum cutting permanent magnet sends produces eddy current, and produces the moment that hinders rotor rotation in the stator drum, this braking moment acts on the gearbox power shaft by clutch discs, thereby automobile is produced braking moment.When not needing to brake, emit cylinder inner high voltage gas, return spring promotes clutch discs and it and rotor is separated, and power shaft is not subjected to braking moment, thereby removes the braking to automobile.
Major advantage of the present utility model is: the permanent-magnet speed buffer structure is placed between clutch and the gearbox, by deceleration (being that the moment of torsion amplifies) effect of gearbox, strengthened the braking effect of retarder to automobile; The permanent-magnet speed buffer stator places the outside of rotor, and its revolving part is compared with traditional permanent-magnet speed buffer or current vortex retarder in inside, and is safer; The permanent-magnet speed buffer stator is provided with liquid cooling apparatus, good heat dissipation effect, brakeless moment decline when working long hours; The permanent-magnet speed buffer controlling organization adopts traditional friction disk type, is easy to realize the switching of on-position, and when non-braking magnetic leakage free moment; The retarder compact overall structure, volume mass is little.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: 1, gearbox power shaft, 2, the clutch end cap, 3, clutch housing, 4, air inlet pipe interface, 5, stator drum, 6, the water channel seal cover, 7, gearbox cover, 8, permanent magnet, 9, the magnet retainer, 10, bearing, 11, return spring, 12, friction plate, 13, clutch discs, 14, thrust bearing, 15, piston, 16, cylinder.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
As Fig. 1, clutch end cap 2 connects by bolt and clutch housing 3, gearbox cover 7 connects by bolt and gear-box case, and retarder stator drum 5 is installed between clutch end cap 2 and the gearbox cover 7, and water channel seal cover 6 is formed liquid cooling apparatus with the water channel on the stator drum 5.Permanent magnet 8 is uniformly distributed along the circumference on magnet retainer 9, and magnet retainer 9 connects by bearing 10 and gearbox cover 7 and be free to rotate, keeps certain interval with the stator drum.Controlling organization is made up of cylinder 16, piston 15, clutch discs 13, thrust bearing 14, friction plate 12 and return spring 11, cylinder 16 by bolted on clutch end cap 2.Piston 15 is by the sealing of 0 shape circle, can slide in cylinder, thrust bearing 14 is fixed on piston 15 and the clutch discs 13, and clutch discs 13 connects by spline and gearbox power shaft 1, return spring 11 is fixed on the gearbox power shaft 1, and compresses by the clutch discs 13 and the shaft shoulder.Clutch discs 13 connects by spline and friction plate 12, and friction plate 12 connects by spline and magnet retainer 9.
When needs are braked, in cylinder 16, feed gases at high pressure, gases at high pressure promote piston 15, thrust bearing 14 and clutch discs 13 friction plate 12 are compressed, the gearbox power shaft 1 of rotation drives clutch discs 13, friction plate 12 and rotor magnet retainer 9 and permanent magnet 8 rotates together, the magnetic line of force that stator drum 5 cutting permanent magnets 8 send produces vortex flow, eddy current and permanent magnet field interact to produce and hinder the moment that magnet retainer 9 rotates, this obstruction moment acts on the gearbox power shaft at last, thereby produces braking moment.The heat that produces on the stator during permanent-magnet speed buffer work is taken away by liquid in the cooling groove, behind the radiator heat-dissipation of cooling fluid through being independent of retarder, is back to the work that moves in circles in the retarder.
When not needing to brake, emit the gases at high pressure in the cylinder 16, return spring 11 promotes clutch discs 14 and gets back to state among Fig. 1, and friction plate 12 separates, and rotor does not rotate, and gearbox power shaft 1 is not subjected to braking moment, thus brake off.
Claims (4)
1, pre-positioning liquid cooling permanent-magnetic retarder for gear box, its structure comprises stator, rotor and controlling organization.Stator is by the clutch end cap, and gearbox cover and stator drum are formed.Rotor is made up of plurality of permanent magnets and magnet retainer, connects by bearing and gearbox cover, and rotor rotatably places in the stator.Controlling organization is positioned at internal rotor, by friction plate, switches the moment of torsion transmission between gearbox power shaft and rotor.
2, pre-positioning liquid cooling permanent-magnetic retarder for gear box according to claim 1 is characterized in that described permanent-magnet speed buffer structure places between automobile clutch and the gearbox.
3, pre-positioning liquid cooling permanent-magnetic retarder for gear box according to claim 1 is characterized in that described stator drum is provided with Control device of liquid cooling.Liquid cools is finished by independent cooling system.
4, pre-positioning liquid cooling permanent-magnetic retarder for gear box according to claim 1, it is characterized in that described controlling organization is made up of cylinder, piston, thrust bearing, clutch discs, friction plate and return spring, cylinder is fixed on clutch end cap or the gearbox cover, clutch discs connects by spline and gearbox power shaft, piston promotes clutch discs by thrust bearing and slides on the gearbox power shaft, return spring is fixed on the gearbox power shaft, can promote the clutch discs return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820127462XU CN201234202Y (en) | 2008-07-23 | 2008-07-23 | Pre-positioning liquid cooling permanent magnet retarder for transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820127462XU CN201234202Y (en) | 2008-07-23 | 2008-07-23 | Pre-positioning liquid cooling permanent magnet retarder for transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234202Y true CN201234202Y (en) | 2009-05-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820127462XU Expired - Fee Related CN201234202Y (en) | 2008-07-23 | 2008-07-23 | Pre-positioning liquid cooling permanent magnet retarder for transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201234202Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299608A (en) * | 2011-07-12 | 2011-12-28 | 北京工业大学 | Liquid cooling auto-excitation-type eddy current retarder without electric brush structure |
| CN104819226A (en) * | 2015-03-30 | 2015-08-05 | 江西工埠机械有限责任公司 | Motor built-in multi-disc braking device |
| CN105993119A (en) * | 2014-02-17 | 2016-10-05 | 新日铁住金株式会社 | Eddy current deceleration device equipped with power generation function |
| CN108162767A (en) * | 2017-12-31 | 2018-06-15 | 中国能源建设集团华东电力试验研究院有限公司 | The automatic tripping system of steam turbine mechanical overspeed trip device |
-
2008
- 2008-07-23 CN CNU200820127462XU patent/CN201234202Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299608A (en) * | 2011-07-12 | 2011-12-28 | 北京工业大学 | Liquid cooling auto-excitation-type eddy current retarder without electric brush structure |
| CN105993119A (en) * | 2014-02-17 | 2016-10-05 | 新日铁住金株式会社 | Eddy current deceleration device equipped with power generation function |
| CN105993119B (en) * | 2014-02-17 | 2019-06-28 | 日本制铁株式会社 | The eddy-current reduction gear of function is generated with electric power |
| CN104819226A (en) * | 2015-03-30 | 2015-08-05 | 江西工埠机械有限责任公司 | Motor built-in multi-disc braking device |
| CN108162767A (en) * | 2017-12-31 | 2018-06-15 | 中国能源建设集团华东电力试验研究院有限公司 | The automatic tripping system of steam turbine mechanical overspeed trip device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING GEAR CO., LTD. Free format text: FORMER OWNER: BEIJING GEAR WORDS Effective date: 20111124 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111124 Address after: 100024 Beijing city Chaoyang District Dingfuzhuang No. 2 West Co-patentee after: Beijing University of Technology Patentee after: Beijing Gear Co., Ltd. Address before: 100024 Beijing city Chaoyang District Dingfuzhuang No. 2 West Co-patentee before: Beijing University of Technology Patentee before: Beijing Gear Works |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Gear Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Gear Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |