CN203368288U - Magneto type eddy current retarder for mine car - Google Patents
Magneto type eddy current retarder for mine car Download PDFInfo
- Publication number
- CN203368288U CN203368288U CN 201320460170 CN201320460170U CN203368288U CN 203368288 U CN203368288 U CN 203368288U CN 201320460170 CN201320460170 CN 201320460170 CN 201320460170 U CN201320460170 U CN 201320460170U CN 203368288 U CN203368288 U CN 203368288U
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- rotor
- mine car
- eddy current
- retarder
- current retarder
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- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model relates to a magneto type eddy current retarder for a mine car. The magneto type eddy current retarder comprises a stator fixed on a frame of a mine car and a rotor which is connected with a hub at the bottom of the mine car through a connection tray. A plurality of permanent magnets with alternatively-changed magnetic poles are arranged on the outer circumference of the rotor. The hub of the rotor is in transmission connection with a planetary gear transmission arranged on the connection tray. The retarder is a relatively independent responsive auxiliary braking system. According to the operating principle of the retarder, an eddy-current loss technology is utilized. When the mine car drives down, the rotor is driven by the hub to rotate so as to produce braking torque. When the mine car drives upward, the retarder can be adjusted to stop running. According to the utility model, there is no contact between the stator and the rotor, and there is no abrasion. The magneto type eddy current retarder has advantages of reasonable structure, safe and convenient usage, good brake performance and environmental protection performance and the like.
Description
Technical field
The utility model belongs to the mine down-hole equipment technology field of transport, relates to a kind of mine car magneto eddy current retarder.
Background technology
Mine car is the capital equipment of mine down-hole transportation.When mine car is done descending transportation, the control of its downstream rate mainly relies on traction electric machine to control, and energy loss is larger, once, when stall occurs, just can only realize stopping by the mechanical braking mode; Along with the descending transportation range of mine car increases and extends with working depth, the wearing and tearing aggravation of brake(-holder) block, need to frequently change, affect braking ability and increase maintenance cost and the time, brake(-holder) block also can produce a lot of dust in friction process simultaneously, and produces huge noise, pollutes subsurface environment.
The utility model content
The purpose of this utility model is that the problem that prior art is existed solves, and then a kind of rational in infrastructure, safe and convenient to use, mine car magneto eddy current retarder of not having wearing and tearing and braking ability and good environmental protection is provided.
For achieving the above object and the technical scheme of design is such: the mine car provided comprises the stator that is fixed on mine car frame and the rotor that wheel shaft links together bottom terminal pad and mine car with the magneto eddy current retarder, wherein, the excircle of rotor distributes and is mounted with the permanent magnet (pole piece) that a plurality of magnetic poles alternately change, and the planetary gear that the wheel shaft of rotor and a pair are arranged on terminal pad is in transmission connection.
Above-mentioned mine car is with in the magneto eddy current retarder, said planetary gear is the planet gear train speed changer that Yi Geyou center sun gear, planetary gear and periphery ring gear form, the center sun gear is in transmission connection by three planetary gears and periphery ring gear, and the axostylus axostyle of center sun gear is connected with the rotor wheel shaft.
Above-mentioned mine car is with in the magneto eddy current retarder, and said rotor has a Wheel-type magnet holder, at the excircle of magnet holder wheel disc, distributes and is mounted with the permanent magnet (pole piece) that a plurality of magnetic poles alternately change.
Above-mentioned mine car is with in the magneto eddy current retarder, between rotor and planetary gear, by axostylus axostyle, be connected, the one end body of rod of said axostylus axostyle is inserted by rotor center and overlaps through being in transmission connection with planetary gear after an auxiliary spring, at this axostylus axostyle, is positioned on the body of rod outside rotor adjusting nut is housed.
Mine car described in the utility model is relatively independent, a sensitive auxiliary braking system with the magneto eddy current retarder, its operation principle has been utilized the eddy current loss technology, when the alternation magnetic line of force passes from electric conductor, will produce induced electromotive force in electric conductor, under the effect of induced electromotive force, will produce loop current and make conductor temp .-elevating in electric conductor, change the kinetic energy of rotation into thermal energy consumption and fall, realize that speed limit is descending.
Working method of the present utility model is: when mine car is descending, retarder is in running order, wheel drives terminal pad and then rotates in a circumferential direction by the speed changer rotor driven, the magnetic line of force that the permanent magnet that rotor outer circle week distributes excites arrives stator through air gap, thereby at rotor permanent magnet, magnetic pole, form magnetic circuit between air gap and stator, rotor is in rotary course, stator is equivalent at cutting magnetic line, determined on thickness to induce eddy current at stator inner surface and radial direction, eddy current and epitrochanterian magnetic flux interact, result from direction of rotation opposite effect power on rotor, and opposing torque, by the kinetic transformation of rotation of wheel, be heat energy, by stator, be dispersed in air, realize the retarding braking of vehicle, when mine car is up, pass through adjusting nut, make rotor under the promotion of spring outside stator side shifting, after rotor shifts out the protecting of stator scope, at this moment the rotor magnetic pole magnetic flux is no longer through stator, and magnetic circuit can't form, and stator can't cutting magnetic line and can not form eddy current, can not form like this torque with direction of rotation in rotating shaft, retarder is inoperative.
Compared with prior art, the technological merit the utlity model has is: not contact between the stator of this magneto eddy current retarder and rotor, there are not wearing and tearing, reduce maintenance cost and time, improved the braking ability of mine car, reduced the temperature of wheel shaft in the braking procedure, greatly improved the security performance during mine car is descending, simultaneously also reduced the generation of harmful dust in the brake block, huge noise while having alleviated descending brake, good environmental protection.
The accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment of the utility model.
Fig. 2 is the structural representation of this magneto eddy current retarder rotor part.
Fig. 3 is overlooking to structural representation of rotor portion shown in Fig. 2.
In figure, the title of each number designation respectively: 1-adjusting nut, 2-rotor, 3-periphery ring gear, 4-terminal pad, 5-permanent magnet, 6-spring, 7-stator, 8-planetary gear, 9-center sun gear, 10-planetary gear, 11-planetary gear, 12-magnet holder.
Embodiment
Below with reference to accompanying drawing, the utility model content is described further, but actual fabrication structure of the present utility model is not limited in embodiment shown in the drawings.
Referring to accompanying drawing, mine car described in the utility model is comprised of stator 7 and rotor 2 with the magneto eddy current retarder.Stator 7, as retarder protection gram, is cast by cast iron or steel alloy, impales outside the protection supporting role, is fixed on vehicle frame.Rotor 2 links together by terminal pad 4 and mine car bottom wheel shaft, and it has a Wheel-type magnet holder 12, the permanent magnet 5 that has a plurality of magnetic poles alternately to change at the excircle distributing installation of magnet holder 12 wheel discs.
In view of the size of retarder braking moment relevant with the area of magnetic pole effect with rotor rotation speed, in order to increase the rotating speed of working rotor, rotation of the present utility model is delivered between rotor portion and adopts planetary gear from wheel shaft, makes the rotating speed of rotor 2 far above the wheel shaft rotating speed.This planetary gear is You Yige center sun gear 9, three planet gear train speed changers that 8,10,11 and periphery ring gears of planetary gear 3 form, center sun gear 9 is in transmission connection by three planetary gear 8,10,11 and periphery ring gears 3 of arranging by equilateral triangle, and the axostylus axostyle of center sun gear 9 is connected with rotor 2 wheel shafts.
This mine car is connected with the axostylus axostyle that is installed with spring 6 by a cover between the rotor 2 of magneto eddy current retarder and planetary gear, and adjusting nut 1 is housed on the body of rod outside this axostylus axostyle is positioned at rotor 2.The effect of spring 6 and adjusting nut 1 is to control the work area of rotor magnetic pole in stator 7, can push or release stator 7 to rotor 2 by adjusting nut 1, the adjustment of realization to the magnetic pole acting surface, make retarder in work (mine car is descending) or (mine car the is up) state of no longer working.
Claims (4)
1. a mine car magneto eddy current retarder, comprise the stator (7) be fixed on mine car frame and the rotor (2) linked together by terminal pad (4) and mine car bottom wheel shaft, it is characterized in that: the excircle of rotor (2) distributes and is mounted with the permanent magnet (5) that a plurality of magnetic poles alternately change, and the planetary gear that the wheel shaft of rotor (2) and a pair are arranged on terminal pad (4) is in transmission connection.
2. mine car according to claim 1 magneto eddy current retarder, it is characterized in that: said planetary gear is the planet gear train speed changer that Yi Geyou center sun gear (9), planetary gear (8,10,11) and periphery ring gear (3) form, center sun gear (9) is in transmission connection by three planetary gears (8,10,11) and periphery ring gear (3), and the axostylus axostyle of center sun gear (9) is connected with rotor (2) wheel shaft.
3. mine car according to claim 1 magneto eddy current retarder, it is characterized in that: said rotor (2) has a Wheel-type magnet holder (12), at the excircle of magnet holder (12) wheel disc, distributes and is mounted with the permanent magnet (5) that a plurality of magnetic poles alternately change.
4. mine car according to claim 1 magneto eddy current retarder, it is characterized in that: between rotor (2) and planetary gear, by axostylus axostyle, be connected, the one end body of rod of said axostylus axostyle by rotor (2) center, inserted and overlap through after an auxiliary spring (6) and planetary gear be in transmission connection, adjusting nut (1) is housed on the body of rod outside this axostylus axostyle is positioned at rotor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320460170 CN203368288U (en) | 2013-07-30 | 2013-07-30 | Magneto type eddy current retarder for mine car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320460170 CN203368288U (en) | 2013-07-30 | 2013-07-30 | Magneto type eddy current retarder for mine car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368288U true CN203368288U (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320460170 Expired - Fee Related CN203368288U (en) | 2013-07-30 | 2013-07-30 | Magneto type eddy current retarder for mine car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394991A (en) * | 2017-09-18 | 2017-11-24 | 安徽沃弗电力科技有限公司 | A kind of radial support formula permanent-magnet speed governor |
-
2013
- 2013-07-30 CN CN 201320460170 patent/CN203368288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394991A (en) * | 2017-09-18 | 2017-11-24 | 安徽沃弗电力科技有限公司 | A kind of radial support formula permanent-magnet speed governor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20140730 |
|
| EXPY | Termination of patent right or utility model |