CN202071705U - Eddy current retarder with big braking torque - Google Patents
Eddy current retarder with big braking torque Download PDFInfo
- Publication number
- CN202071705U CN202071705U CN2011201728056U CN201120172805U CN202071705U CN 202071705 U CN202071705 U CN 202071705U CN 2011201728056 U CN2011201728056 U CN 2011201728056U CN 201120172805 U CN201120172805 U CN 201120172805U CN 202071705 U CN202071705 U CN 202071705U
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- pole
- braking torque
- eddy current
- magnetic pole
- magnetic
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Abstract
The utility model provides an eddy current retarder with big braking torque, which comprises magnetic poles, a coil, a casing, a connecting piece, a rotating shaft, bearings and a rotary plate, wherein each magnetic pole comprises a pole body and a pole shoe which are both in fan shapes and fixedly connected with each other, the coil is wound on the pole body, at least one magnetic pole is symmetrically distributed on two sides of the rotary plate, air gaps are reserved between the rotary plate and the pole shoe of each magnetic pole, and the pole body of each magnetic pole is fixedly connected with the casing. The rotating shaft which penetrates through the rotary plate is fixedly connected with the rotary plate through the connecting piece, a pair of bearings are respectively installed at two shaft ends of the rotating shaft, and the bearings are fixed by the casing. The eddy current retarder with the big braking torque optimizes a magnetic circuit by designing a fan-shaped magnetic pole structure, enlarges an effective eddy path, remarkably improves the braking torque generated by a rotor plate, can satisfy the braking requirements of high-speed rails, and can also be applied to a large loading truck needing big braking torque.
Description
Technical field
The utility model belongs to vehicle braking and uses the calutron field, particularly relates to a kind of large braking torque eddy current retarder, mainly towards the brake snub of high speed train, also is applicable to motor omnibus, truck etc.
Background technology
Because the vice proper of method aspect frictional loss and high temperature rise of traditional friction braking, retarder is obvious for the improvement of the deceleration and stopping performance of high speed train.Country greatly develops high speed train now, and the lifting of the speed of a motor vehicle has proposed bigger challenge for the braking of train.Then requirement can have bigger braking torque for current vortex retarder, and this also is one of research emphasis of present current vortex retarder.The method that present current vortex retarder improves braking torque is to obtain round modifier size, exciting current basically, the shape of magnetic pole then is circular or square substantially, this path that causes eddy current is also for circular or square, such eddy current is under the magnetic pole effect, effectively the eddy current overlay area is little, the lock torque that obtains is little, can't satisfy the brake request of the vehicle such as high speed train.
The utility model content
The purpose of this utility model is to provide a kind of large braking torque eddy current retarder, by designing fan-shaped field structure, optimizes magnetic circuit, and effective eddy current path is enlarged, and has improved lock torque, can satisfy the braking needs of high speed train.
The utility model provides a kind of large braking torque eddy current retarder, it comprises magnetic pole, coil, shell, attaching parts, rotating shaft, bearing and rotating disk, described magnetic pole comprises pole body and pole shoe, pole body is captiveed joint with pole shoe, coil is around on the pole body, the rotating disk bilateral symmetry is distributed with at least one magnetic pole, all there is air gap between the pole shoe of each magnetic pole and the rotating disk, the pole body of each magnetic pole is all captiveed joint with shell, rotating disk is passed in rotating shaft, captive joint by attaching parts with rotating disk, the two axial ends of rotating shaft respectively is equipped with pair of bearings, and bearing is fixed by shell.
Further, described pole body and described pole shoe are fan-shaped.
Further, the lateral thickness of shell is more than or equal to 17mm.
Further, coil (4) is electrically connected with external power supply, and by controlling the electric current of described external power supply, described large braking torque eddy current retarder can be realized many grades of torque outputs.
The utility model is by being processed into pole body and pole shoe shape fan-shaped, make static disc surfaces Distribution of Magnetic Field also for fan-shaped, such Distribution of Magnetic Field is eddy current path on the guided rotor dish effectively, make the eddy current guiding of responding on the rotor disk fan-shaped for class, effectively enlarge the scope that effective eddy current covers, significantly improved the braking torque that produces on the rotor disk.This device can satisfy the high ferro braking requirement, and also can be applicable to need be than the large-scale load-carrying lorry of large braking torque.
Simultaneously, the utility model has increased the lateral thickness of shell, can increase the total magnetic flux in the magnetic circuit, reduces the magnetic circuit degree of saturation specific humidity, improves magnetic-field intensity on the rotating disk.
Description of drawings
Fig. 1 is the large braking torque eddy current retarder structural representation;
Fig. 2 is the field structure scheme drawing;
Fig. 3 is magnetic pole and loop construction scheme drawing;
Fig. 4 is the magnetic pole distribution schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing and enforcement the utility model is described further.
Large braking torque eddy current retarder described in the utility model, as shown in Figure 1, it comprises magnetic pole 1, coil 4, shell 5, attaching parts 6, rotating shaft 7, bearing 8 and rotating disk 9.As shown in Figure 2, magnetic pole 1 comprises pole body 2 and pole shoe 3, and pole body 2 and pole shoe 3 are fan-shaped, and pole body 2 and pole shoe 3 strapping wires cutting processing connect fastening with flathead screw again.As shown in Figure 3, coil 4 is around on the pole body 2, and coil 4 uses high temperature resistant, high heat conductance poured with epoxy resin.Rotating shaft 7 is connected by attaching parts 6 (spline or expansion set gauge member) with rotating disk 9.Pair of bearings 8 is equipped with at rotating shaft 7 shaft shoulder places, and bearing 8 tightens fixing by shell 5.On the shell 5 by the magnetic pole 1 that is threaded.Rotating disk 3 both sides can be symmetrically arranged with one or more magnetic poles 1 in principle, consider device radiation and installation weight factor, and this device rotating disk 3 both sides respectively are symmetrically arranged with 1, four magnetic pole 1 of four magnetic poles rectangular distribution in 135 ° of angular ranges respectively, as shown in Figure 4.This number of pole-pairs and distribution mode are not unique, can be according to using the particular case adjustment.Rotating disk 9 does not contact with the pole shoe 3 of magnetic pole 1, between have air gap.In the coil 4 that adjacent magnetic pole 1 twines, feed counter-current, as power supply,, realizes that many grades of adjustable moments of torsion export by the accurate adjustable resistance control current of superpower by rectifying circuit or battery.Rotating disk 9 and rotating shaft 7 are all through bakingout process, and its turntable adopts the 45# steel, do modifier treatment (860 ℃ of oil quenchings, 560 ℃ of high temperature temperings) to improving steel magnetic conductance characteristic direction; Axle adopts common heat treatment to strengthen its mechanical strength.Shell 5 sides and magnetic pole 1 use electrical pure iron or silicon steel plate to make.For reducing the magnetic circuit degree of saturation specific humidity, making magnetic resistance as far as possible little, consider weight factor simultaneously, the shell side face thickness is controlled at 17-25mm, under special circumstances, for increasing the magnetic circuit total magnetic flux, also can further improve the shell side face thickness.
Large braking torque eddy current retarder described in the utility model is installed on high-speed train bogie,, coil 4 is inserted power circuit with train axle replacement device rotating shaft 7.When train is run at high speed, rotating disk 9 can rotate along with the train axle, when the needs sudden stop, the control power circuit, to coil 4 energisings, form magnetic circuit in air gap between magnetic pole 1, rotating disk 9, magnetic pole 1 and rotating disk 9 and the shell 5, because rotating disk 9 is with train axle high speed rotating cutting magnetic line, can form eddy current on rotating disk 9, eddy current has just produced braking torque under the effect in magnetic field.This device makes effective eddy current overlay area maximum on the rotating disk 9 by optimizing structure and pole form, and has at utmost increased the magnetic field penetration degree of depth on the rotating disk 9, to obtain high braking torque.For the ease of use, gradual braking, by regulating the high-power adjustable resistance in the power circuit, the exciting current of regulating winding 4 can be realized many grades of adjustable braking torques outputs.
The fan-shaped pole parts of device described in the utility model is kept,, can be made into automobile-used brake equipment, be used for large truck or automobile brake etc. by the setting device size.By setting device size and auxiliary support structure, can be made into elevator or driving band electro-magnetic braking device, also can make the electro-magnetic braking device that the molten steel melting is used in the steelmaking process.
The utility model not only is confined to the above-mentioned specific embodiment; persons skilled in the art are according to the disclosed content of the utility model; can adopt other multiple specific embodiment to implement the utility model; therefore; every employing project organization of the present utility model and thinking; do some simple designs that change or change, all fall into the scope of the utility model protection.
Claims (4)
1. large braking torque eddy current retarder, it is characterized in that, it comprises magnetic pole (1), coil (4), shell (5), attaching parts (6), rotating shaft (7), bearing (8) and rotating disk (9), described magnetic pole (1) comprises pole body (2) and pole shoe (3), pole body (2) is captiveed joint with pole shoe (3), coil (4) is around on the pole body (2), rotating disk (9) bilateral symmetry is distributed with at least one magnetic pole (1), all there is air gap between pole shoe (3) of each magnetic pole (1) and the rotating disk (9), the pole body (2) of each magnetic pole (1) is all captiveed joint with shell (4), rotating disk (9) is passed in rotating shaft (6), captive joint by attaching parts (6) with rotating disk (9), the two axial ends of rotating shaft (6) respectively is equipped with pair of bearings (7), and bearing (7) is fixing by shell (4).
2. large braking torque eddy current retarder according to claim 1 is characterized in that, described pole body (2) and described pole shoe (3) are fan-shaped.
3. large braking torque eddy current retarder according to claim 1 is characterized in that, the lateral thickness of shell (5) is more than or equal to 17mm.
4. large braking torque eddy current retarder according to claim 1, it is characterized in that, described coil (4) is electrically connected with external power supply, and by controlling the electric current of described external power supply, described large braking torque eddy current retarder can be realized many grades of torque outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201728056U CN202071705U (en) | 2011-05-26 | 2011-05-26 | Eddy current retarder with big braking torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201728056U CN202071705U (en) | 2011-05-26 | 2011-05-26 | Eddy current retarder with big braking torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202071705U true CN202071705U (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201728056U Expired - Fee Related CN202071705U (en) | 2011-05-26 | 2011-05-26 | Eddy current retarder with big braking torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202071705U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807329A (en) * | 2014-02-27 | 2014-05-21 | 福州大学 | Eddy current retarder device based on magnetorheological effect |
| CN107448519A (en) * | 2017-08-01 | 2017-12-08 | 昆山艾迅自动化技术有限公司 | Restraining coil assembly, current vortex loader and test of flutter machine |
| CN112003450A (en) * | 2020-08-04 | 2020-11-27 | 南京航空航天大学 | Electromagnetic variable damping controller |
| WO2023015733A1 (en) * | 2021-08-13 | 2023-02-16 | 浙江益恒悦医疗科技有限公司 | Braking device, wheel assembly, and walking aid |
| WO2023015734A1 (en) * | 2021-08-13 | 2023-02-16 | 浙江益恒悦医疗科技有限公司 | Braking apparatus, wheel body assembly and walker |
-
2011
- 2011-05-26 CN CN2011201728056U patent/CN202071705U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807329A (en) * | 2014-02-27 | 2014-05-21 | 福州大学 | Eddy current retarder device based on magnetorheological effect |
| CN103807329B (en) * | 2014-02-27 | 2016-05-04 | 福州大学 | A kind of electric vortex buffering apparatus based on magnetic rheology effect |
| CN107448519A (en) * | 2017-08-01 | 2017-12-08 | 昆山艾迅自动化技术有限公司 | Restraining coil assembly, current vortex loader and test of flutter machine |
| CN107448519B (en) * | 2017-08-01 | 2023-09-29 | 昆山艾迅自动化技术有限公司 | Brake coil assembly, electric vortex loader and vibration testing machine |
| CN112003450A (en) * | 2020-08-04 | 2020-11-27 | 南京航空航天大学 | Electromagnetic variable damping controller |
| WO2023015733A1 (en) * | 2021-08-13 | 2023-02-16 | 浙江益恒悦医疗科技有限公司 | Braking device, wheel assembly, and walking aid |
| WO2023015734A1 (en) * | 2021-08-13 | 2023-02-16 | 浙江益恒悦医疗科技有限公司 | Braking apparatus, wheel body assembly and walker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20170526 |