CN202004622U - Improved structure of induction rotor of eddy current retarder - Google Patents
Improved structure of induction rotor of eddy current retarder Download PDFInfo
- Publication number
- CN202004622U CN202004622U CN2010206616813U CN201020661681U CN202004622U CN 202004622 U CN202004622 U CN 202004622U CN 2010206616813 U CN2010206616813 U CN 2010206616813U CN 201020661681 U CN201020661681 U CN 201020661681U CN 202004622 U CN202004622 U CN 202004622U
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- striped
- corrugated projection
- magnetic gap
- inductive disks
- current vortex
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Abstract
The utility model discloses an improved structure of an induction rotor of an eddy current retarder, which comprises at least one induction plate which is connected with a fixed ring through a fixed arm, and at least one annular cheek plate which is connected with ventilating vanes which are arranged on the surface of the induction plate farthest from a magnetic gap. A part of the ventilating vanes extends toward the fixed ring to form the fixed arm, and the ventilating vanes, the surface of the induction plate farthest from the magnetic gap and the surface of the annular cheek plate closest to the magnetic gap jointly define a ventilating channel. The ventilating channel is characterized in that at least one side of the inner surface of the ventilating channel is provided with stripes or corrugated protrusions, and these stripes or corrugated protrusions face toward the side direction of the flow direction of air in the ventilating channel. Heat-dissipation effect of the induction plate of the induction rotor of the eddy current retarder is obviously improved, the temperature is obviously lowered, and heat moment values generated by the induction plate are increased.
Description
Technical field
The utility model relates to the inductiopn rotor of current vortex retarder, relates in particular to a kind of improvement structure of current vortex retarder inductiopn rotor.
Background technology
The inductiopn rotor of present electric eddy current rail brake for vehicle, comprise a middle rotating parts that is connected with axle, a centre rotating parts connection retainer ring, be supported on inductive disks on the retainer ring by the plurality of fixed arm, with fixed arm at the ring-type cheek that extension, described sensing chip surface is connected, be provided with air duct between ring-type cheek and the inductive disks.Whole inductive disks, retainer ring, fixed arm and cheek only are made of a cast iron module usually.
When the decelerator of this type of inductiopn rotor was equipped with in operation, the heat that its vortex current produced mainly relied on following mode to distribute: 1, along the heat conduction of fixed arm to the ring-type cheek; 2, from the thermal radiation of inductive disks, fixed arm and ring-type cheek; 3, the convection current of the formation of the air duct between ring-type cheek and the inductive disks.And the main convection current that is the air duct between dependence ring-type cheek and the inductive disks forms of the heat that vortex current produced realizes, so the ventilation effect in the air duct will directly have influence on the radiating effect of inductiopn rotor.
In known manufacture, the internal edges interface of air duct is significantly not uneven, so the cooling effect of inductive disks is not obvious.In the process of operation, the temperature of inductive disks can reach or even surpass 700 ℃, and the temperature of ring-type cheek still remains on below 500 ℃.
In fact, when the temperature of this inductive disks raises, equip the issuable retarding moment of decelerator of this inductive disks and will dwindle significantly.As when the temperature of inductive disks when ambient temperature rises to 700 ℃ of left and right sides, under given rotating speed and power consumption numerical value, this moment may drop to C/3 from numerical value C.So it is just very important to cool off inductive disks effectively.
The utility model content
Technical problem to be solved in the utility model is undesirable and propose a kind of improvement structure of current vortex retarder inductiopn rotor at inductive disks radiating effect in the inductiopn rotor of existing electric eddy current rail brake for vehicle.The improvement structure of this current vortex retarder inductiopn rotor can improve the radiating effect of inductive disks, reduces the temperature of inductive disks, increases the hot moment values that this inductive disks produces.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of improvement structure of current vortex retarder inductiopn rotor, comprise at least one inductive disks that is connected with retainer ring by fixed arm with at least one be arranged on the ring-type cheek that inductive disks is connected apart from magnetic gap lip-deep ventilation blade farthest, the blade that partly ventilates extends to form described fixed arm to the retainer ring direction, described ventilation blade and inductive disks are apart from magnetic gap surface farthest, the ring-type cheek surface nearest apart from magnetic gap defines air duct jointly, it is characterized in that, at least one face has striped or corrugated projection on the surface, inside of described air duct, and these stripeds or corrugated projection are towards the side surface direction of the flow direction of air in air duct.
Described inductive disks is provided with striped or corrugated projection apart from magnetic gap surface farthest, and this striped or corrugated projection are striped or the corrugated projection with continuous concentric annular.
Described striped or the corrugated projection of being provided with of ventilation blade, this striped or corrugated projection are along the radially extension of ventilation blade.
The described ring-type cheek surface nearest apart from magnetic gap is provided with striped or corrugated projection, and this striped or corrugated projection have the striped or the corrugated projection of continuous concentric annular.
The cross section of described striped or corrugated projection is a triangle, and described leg-of-mutton drift angle is the right angle.
Described corrugated projection becomes sinusoidal and arranges.
Distance between described striped or the corrugated projection is 1: 5～15 with the height ratio of described striped or corrugated projection.
The height of described striped or corrugated projection is between 3～5mm
The inner edge side of described inductive disks is a gear teeth shape.
Described ring-type cheek is provided with the striped or the wavy projection of annular concentric apart from magnetic gap surface farthest.
Owing to adopted technical scheme as above, the radiating effect of inductive disks is significantly improved in the current vortex retarder inductiopn rotor of the present utility model, and temperature is significantly descended, and the heating power square value that inductive disks produces obtains increasing.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the cutaway view of the II-II direction of Fig. 1.
Fig. 3 is the structural representation of the air duct of the utility model embodiment 2.
Fig. 4 is the structural representation of the air duct of the utility model embodiment 3.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete accompanying drawing, further set forth the utility model.
Embodiment 1
Referring to Fig. 1, a kind of improvement structure of current vortex retarder inductiopn rotor, comprise an inductiopn rotor assembly 1, inductiopn rotor assembly 1 has an inductive disks 2 of being made by ferromagnetic material, this inductive disks 2 and power transmission shaft 3 interlocks to be slowed down, power transmission shaft such as vehicle, and this inductive disks 2 is mounted in the front of decelerator stator 4, perhaps more precisely, retaining is in ring 5 fronts that the positive and negative induction pole of forming this decelerator stator 4 replaces, between inductive disks 2 and ring 5, there is a magnetic gap E, makes inductive disks 2 form the pedestal that produces vortex current, realize the braking of power transmission shaft 3 by inductive disks 2.Because inductive disks 2 can produce vortex current, so can there be the phenomenon of a temperature rise in inductive disks 2.
The whole inductiopn rotor assembly 1 of decelerator also comprises the middle rotating parts 6 along the X-axis arranged around except inductive disks 2 recited above, this centre rotating parts 6 is by being bolted on shaft coupling, axle sleeve or the pallet on the power transmission shaft 3 that needs to slow down.
Except inductive disks 2 and middle rotating parts 6, each inductiopn rotor assembly 1 also comprises the retainer ring 7 of an average diameter less than the internal diameter of inductive disks 2, on retainer ring 7, be evenly equipped with as dry hole 8, hole 8 can be that the screwed hole page or leaf can be non-screwed hole, so that retainer ring 7 is connected by the bolt (not shown) with middle rotating parts 6.
Some ventilation blades 9 are disposed on inductive disks 2, and last and outstanding inductive disks 2 is apart from magnetic gap E surperficial P farthest apart from magnetic gap E surperficial P farthest, and ventilation blade 9 becomes arcuation to extend to the inner edge of inductive disks 2 and tend to the rear side of the rotation direction R of inductive disks 2 to X-direction by the outer rim of inductive disks 2.In these ventilation blades 9 at least some ventilating vane sheet 9 (especially having in two or three) continue to extending, to form the fixed arm 10 that connects inductive disks and retainer ring 7 by the inner edge of inductive disks 2 along X-direction.These fixed arm 10 best axial bendings just as manufacture shown in Figure 2, in inserting retainer ring 7, can dwindle the axial dimension of inductiopn rotor assembly 1 middle body to inductiopn rotor assembly 1 inner shaft so thus.Certainly, fixed arm 10 also can be straight, and their center line almost is continuous in same transverse plane.The quantity of the fixed arm 10 of each inductiopn rotor assembly 1 preferably equals eight, and ventilation blade 9 add up to 16 or 24.
Ring-type cheek 11 extends in parallel and is connected in ventilation blade 9 with inductive disks 2, so that define the air duct 12 that forms draft jointly apart from magnetic gap E surperficial P, ring-type cheek 11 surface nearest apart from magnetic gap E farthest in these ventilation blades 9, inductive disks 2.
Make the heat that produces in the inductive disks 2 distribute bad present situation by vortex current during at retarder operation, the utility model is manufactured with striped or corrugated projection at least one face in the surface, inside of air duct 12, and these stripeds or corrugated projection are extended along the side direction of the air-flow direction in these air ducts 12.
Experience shows, takes such measure can obviously improve the cooling effect of inductive disks 2, has only increased the required moment of negligible inductiopn rotor assembly 1 traction simultaneously, so only increased " ventilation loss " seldom.The utility model increases the hot surface area that participates in heat exchange by these stripeds or corrugated projection are set, and makes the air turbulization by air duct 12 simultaneously, makes air can take away more heat.
In the present embodiment, make the striped projection in inductive disks 2 on apart from magnetic gap E surperficial P farthest, these striped projections are concentric and spaced ring-shaped stripe projection 13 with X-axis, ring-shaped stripe projection 13 directly protrude inductive disks 2 apart from magnetic gap E surperficial P farthest on.
The straightforward face of ring-shaped stripe projection 13 is an isosceles triangle, and drift angle is right angle or almost be the right angle preferably.Calculate along the air-flow direction in the air duct 12, the ratio between the distance D of two ring-shaped stripe projections 13 and ring-shaped stripe projection 13 height H is between 1: 5～15.Purely as an illustration, height H preferably is about 3 to 5 millimeters, and distance D preferably is about 30 to 40 millimeters.
In order to improve the heat exchange between the surrounding air in inductive disks 2 and the air duct 12, preferably be arranged to gear teeth shape 18 at inductive disks 2 inner edge sides equally, these gear teeth shapes 18 especially are made up of the facet parallel with X-axis, and almost right angle tilts mutually.
The structure of this embodiment is identical with embodiment 1 basically, just make corrugated projection 14 on apart from magnetic gap E surperficial P farthest in inductive disks 2, these corrugated projections 14 no longer are the stripeds of acute angle, but be that the circle direction at center is extended with the X-axis, their side or cross section plane vertically are complications or sinusoidal shape.
Embodiment 3
The structure of this embodiment is identical with embodiment 1 basically, and just inductive disks 2 is leg-of-mutton acute angle striped 15 apart from the last making of magnetic gap E surperficial P farthest cross section, and these acute angle stripeds 15 are continuous, forms the sawtooth like shape.These acute angle stripeds 15 are annular, and are concentric with X-axis.
In addition, not only making the cross section in inductive disks 2 on apart from magnetic gap E surperficial P farthest is leg-of-mutton acute angle striped 15, also makes the acute angle striped 16 and the acute angle striped 17 of similar acute angle striped 15 respectively apart from the side of nearest surface of magnetic gap E and ventilation blade 9 at annular cheek 11.The annular cheek 11 lip-deep acute angle striped 16 nearest apart from magnetic gap E is the same with acute angle striped 15, is annular also, and concentric with X-axis.
As for acute angle striped 17, their top is extended radially outwardly by the side of ventilation blade 9, as having represented shown in some acute angle stripeds 17 with chain-dotted line among Fig. 1.
Referring to Fig. 4, acute angle striped 17, annular cheek 11 lip-deep acute angle striped 16 and the inductive disks 2 nearest apart from magnetic gap E on the relative side of two ventilation blades 9 in same air duct 12 is identical apart from acute angle striped 15 quantity on the magnetic gap E surperficial P farthest, and its their top progressively prolongs, and has divided the whole various continuous throttle structures of relevant air duct 12 inner air flows.
In order to improve the cooling effect of annular cheek 11, at its free outer surface, that is to say that annular cheek 11 is apart from inductive disks 2 surface farthest, make not too outstanding striped 19, its main purpose is to break the limiting layer that may form on this surface, and the projection of these stripeds 19 is not enough to form the barrier that can pin down air specially, and makes turbulent flow.These stripeds 19 are made up of concentric grooves, and they are very shallow, are semicircle: about 2 millimeters of the radius of each groove.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. the improvement structure of current vortex retarder inductiopn rotor, comprise at least one inductive disks that is connected with retainer ring by fixed arm with at least one be arranged on the ring-type cheek that inductive disks is connected apart from magnetic gap lip-deep ventilation blade farthest, the blade that partly ventilates extends to form described fixed arm to the retainer ring direction, described ventilation blade and inductive disks are apart from magnetic gap surface farthest, the ring-type cheek surface nearest apart from magnetic gap defines air duct jointly, it is characterized in that, at least one face has striped or corrugated projection on the surface, inside of described air duct, and these stripeds or corrugated projection are towards the side surface direction of the flow direction of air in air duct.
2. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1, it is characterized in that, described inductive disks is provided with striped or corrugated projection apart from magnetic gap surface farthest, and this striped or corrugated projection are striped or the corrugated projection with continuous concentric annular.
3. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 or 2 is characterized in that, described striped or the corrugated projection of being provided with of ventilation blade, and this striped or corrugated projection are along the radially extension of ventilation blade.
4. as the improvement structure of claim 1 or 2 or 3 described current vortex retarder inductiopn rotors, it is characterized in that, the described ring-type cheek surface nearest apart from magnetic gap is provided with striped or corrugated projection, and this striped or corrugated projection have the striped or the corrugated projection of continuous concentric annular.
5. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, the cross section of described striped or corrugated projection is a triangle, and described leg-of-mutton drift angle is the right angle.
6. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, described corrugated projection becomes sinusoidal and arranges.
7. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, the distance between described striped or the corrugated projection is 1: 5～15 with the height ratio of described striped or corrugated projection.
8. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, the height of described striped or corrugated projection is between 3～5mm
9. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, the inner edge side of described inductive disks is a gear teeth shape.
10. the improvement structure of current vortex retarder inductiopn rotor as claimed in claim 1 is characterized in that, described ring-type cheek is provided with the striped or the wavy projection of annular concentric apart from magnetic gap surface farthest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206616813U CN202004622U (en) | 2010-12-15 | 2010-12-15 | Improved structure of induction rotor of eddy current retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206616813U CN202004622U (en) | 2010-12-15 | 2010-12-15 | Improved structure of induction rotor of eddy current retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004622U true CN202004622U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206616813U Expired - Lifetime CN202004622U (en) | 2010-12-15 | 2010-12-15 | Improved structure of induction rotor of eddy current retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004622U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887951A (en) * | 2012-12-19 | 2014-06-25 | 泰乐玛汽车制动系统（上海）有限公司 | Rotor used on car retarder |
| WO2017131524A3 (en) * | 2016-01-27 | 2017-10-12 | Zytec B.V. | Magnetic coupling assembly |
| CN112398306A (en) * | 2020-11-30 | 2021-02-23 | 合肥工业大学 | Low power sinusoidal torque output transmission |
-
2010
- 2010-12-15 CN CN2010206616813U patent/CN202004622U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887951A (en) * | 2012-12-19 | 2014-06-25 | 泰乐玛汽车制动系统（上海）有限公司 | Rotor used on car retarder |
| WO2017131524A3 (en) * | 2016-01-27 | 2017-10-12 | Zytec B.V. | Magnetic coupling assembly |
| US11356009B2 (en) | 2016-01-27 | 2022-06-07 | Zytec Technologies B.V. | Magnetic coupling assembly |
| CN112398306A (en) * | 2020-11-30 | 2021-02-23 | 合肥工业大学 | Low power sinusoidal torque output transmission |
| CN112398306B (en) * | 2020-11-30 | 2021-09-17 | 合肥工业大学 | Low power sinusoidal torque output transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |