CN201656611U - Motor rotor - Google Patents
Motor rotor Download PDFInfo
- Publication number
- CN201656611U CN201656611U CN2010201907916U CN201020190791U CN201656611U CN 201656611 U CN201656611 U CN 201656611U CN 2010201907916 U CN2010201907916 U CN 2010201907916U CN 201020190791 U CN201020190791 U CN 201020190791U CN 201656611 U CN201656611 U CN 201656611U
- Authority
- CN
- China
- Prior art keywords
- rotor
- bundling belt
- edge
- coil
- breakover point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 32
- 239000007779 soft material Substances 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses a device among electric motor rotor, wherein, electric motor rotor rotates around its axis of rotation and includes rotor block and coil at least, and it stretches out to the coil end portion. The binding band is fitted on the protruding rod outside the outer surface of the rotor coil end, and a first edge of the binding band faces the rotor in the axial direction of the rotor and a second edge of the binding band faces away from the rotor. The tiedown is conical on the inner surface. The diameter of the inner surface of the tying band decreases substantially constantly from the first edge toward the turning point, and the diameter of the inner surface of the tying band increases substantially constantly from the turning point toward the second edge.
Description
Technical field
The utility model relates to the device in a kind of rotor of motor.
Background technology
In motor, usually winding is held in place in the groove of outer surface of inner surface of stator and rotor.Winding in the groove is made of the coil of the groove that is arranged in stator or rotor.Coil comprises many conductor layers.The end winding that the coil side is located by the end that is positioned at groove links together.
The end winding of rotor needs the reinforcement of the radial load that opposing produces when rotor rotates.Strengthen usually making by glass fibre, aramid fibre or carbon fiber tape or steel wire are wound into end winding.When twining, motor twines around end winding by heating period and guide wheel from the feed coil around its rotation rotation and fiber.The support cylinder body is installed in the end winding and twines the pretension of strengthening in the binding so that be created in.The mounting edge band makes the band that twines can not scatter before winding.Edge strip is made by the hard ring of resinification glass fibre usually.In U.S. Pat 6,029, the reinforcement by twining is disclosed in 338.
Reinforcement by winding is consuming time.Manufacturing time also be wasted in roasting in the intensifies process, heating or zinc-plated on.Because its complexity also is being responsive to changing by the reinforcement of twining qualitatively.
CN 200610142225.6 discloses by the end winding of non-hollow bundling belt and has strengthened.
The durability that the rotor coil end is strengthened is subjected to actual test under the situation of big rotary speed, rotor coil end mass or diameter.For example, desired rotational velocity range is big with regard to wind-driven generator.In fitful wind, wind speed can increase fast.In the case, the power that acts in the binding is increased to three times fast.When the load deviated from network, the rotary speed of rotor can increase to 1.75-2 times of normal speed fast.
Durability at a high speed is disadvantageous to the reinforcement by winding.To this, the winding material attribute is a reason.
Need easy-to-install, durable relatively end coil to strengthen.
The utility model content
The device that the purpose of this utility model provides is easy-to-install, be used to strengthen the motor-spin-coil end.For realizing this purpose, the feature of feature of the present utility model and some other preferred embodiment of the present utility model is limited.
In device of the present utility model, rotor is around its rotation rotation and comprise rotor block and coil at least, and it is outstanding to be end winding.Bundling belt is assemblied in the highlight bar in the outside of the outer surface of rotor coil end, and on the axis direction of rotor first edge of bundling belt towards second edge of rotor and bundling belt away from rotor.Bundling belt is conical on inner surface.The diameter of the inner surface of bundling belt reduces from first edge to breakover point substantial constant ground, and the diameter of the inner surface of bundling belt increases to substantial constant ground, second edge from breakover point.
Bundling belt is the annular shape of circle, and it is by on the outer surface that is slidably mounted to the rotor coil end.In rotor, bundling belt is in the radial direction on end winding.The radial load that its carrying produces when rotor rotates by highlight bar, for example centrifugal force.
Bundling belt is stiff, and accurately makes according to size.Bundling belt is double cone shape on inner surface.The inner surface of double cone shape provides effective locking system for bundling belt.
In an embodiment of the present utility model, from first edge of bundling belt to the distance of breakover point distance greater than second edge from the breakover point to the bundling belt.
In another embodiment of the present utility model, from first edge of bundling belt to the taper ratio of breakover point taper ratio less than second edge from the breakover point to the bundling belt.
In another embodiment of the present utility model, highlight bar is outwardly-bent in the radial direction with the inner surface of contact at the bundling belt in the breakover point outside rotor.For example, highlight bar is bent by means of the one or more pads that are installed between rotor coil end and the highlight bar.Pad comprises non-resilient core and the outer surface layer of being made by soft material.Protect the insulation of end winding around the soft material of core.The example of suitable soft material is felt and insulating material.
In another embodiment of the present utility model, the inner surface of bundling belt is coarse.If highlight bar is during dipping, during vacuum pressure impregnation, be to utilize resin-bonding to arrive bundling belt for example, then rough surface is favourable.
In another embodiment of the present utility model, the length of bundling belt is less than the length of rotor coil end on axis direction.In this embodiment, gapped between bundling belt and the rotor block, or the incomplete tied band of the end parts of end winding covers.
Preferred bundling belt taper ratio is 1: 40 to 1: 50.
Bundling belt promptly bundlees not additionally locks in place from fastening, uses the axially structure of locking though do not get rid of.Bundling belt is assembled on the highlight bar by tension force.Frictional force and coniform shape keep bundling belt in place.During dipping, for example during the vacuum pressure impregnation, some resins will enter between bundling belt and the highlight bar and play the effect of adhesive.
End winding stiffening device of the present utility model is durable and be easy to make.The utility model makes that the manufacturing of rotor is very fast.
The bundling belt of being made by metal or carbon fiber for example is prefabricated dividually.The bundling belt of accurately making according to size makes and can realize quality control to the binding of durability key in mode preferably than the solution by being wound into end winding.Can before installing, for example utilize the ultrasonic examination bundling belt in a different manner, thereby improve the q﹠r of wind-driven generator.
Scheme of the present utility model allows to be made of a variety of materials bundling belt according to application.
Device of the present utility model is highly suitable for for example wind-driven generator.Flying under the ease situation, stress will be applied to rotor.Reduced the damage risk that under overspeed situation, concentrates on rotor effectively according to scheme of the present utility model.
According to an embodiment of the present utility model, highlight bar is long slot wedge.Slot wedge is outstanding from rotor block along the insulated part of coil end at least, makes can not damage insulation between installation period and bundle to be held in place.Slot wedge is protected the coil overhang insulation as slidingsurface and between the installation period of binding.Slot wedge can for example be made by glass fibre, and it has necessary durability, enough slidingsurface quality and the temperature tolerance that needs.If binding is made by electric conducting material, then slot wedge can also be used as insulation component.
Description of drawings
Below will be by describing the utility model in more detail by means of some embodiment with reference to the accompanying drawings, wherein:
Fig. 1 shows the rotor tip with bundling belt;
Fig. 2 shows the cutaway view of the rotor tip with bundling belt;
Fig. 3 represents the cutaway view of bundling belt;
Fig. 4 shows the rotor tip with another bundling belt.
Embodiment
Fig. 1 and Fig. 2 show the device in order to the end winding of strengthening rotor.Motor for example is the coil wound rotor generator.Rotor 1 rotates around its rotation r on axle 12.Rotor 1 comprises rotor block 2 and coil 3 at least.Coil 3 is outstanding at the place, end of rotor 1 to be end winding 4.Bundling belt 5 is assembled on the highlight bar 6, and highlight bar is outstanding from rotor block 2 on axis direction basically.To highlight bar, highlight bar is in the outside of the outer ring surface 7 that is formed by rotor coil end 4 by slidable fit for bundling belt 5.Highlight bar 6 is as slidingsurface.Bundling belt 5 along the outer surface smoother of highlight bar 6 move, keep simultaneously and the contacting of outer surface.
On the axis direction a of rotor 5, first edge 8 of bundling belt 5 towards second edge 9 of rotor 1 and bundling belt 5 away from rotor 1.Bundling belt 5 is conical on inner surface 10.The diameter d of the inner surface of bundling belt 5
1Reduce from first edge 8 to breakover point 16 substantial constant ground, and the diameter d of the inner surface of bundling belt 5
2Increase from breakover point 16 to second edges 9.
As shown in Figure 3, from first edge 8 of bundling belt 5 to breakover point 16 apart from e
1Greater than second edge 9 from breakover point 16 to bundling belt apart from e
2In addition, from first edge 8 of bundling belt 5 to the taper ratio of breakover point 16 taper ratio less than 5 second edge 9 from breakover point 16 to bundling belt.The weak point of the bundling belt 5 and advantage of strong conical second portion 21 is to lock bundling belt 5.
The thickness s of bundling belt on second edge 9
2Greater than the thickness s of bundling belt on first edge
1This outermost point place in rotor coil end 4 provides extra intensity for bundling belt 5.
In the accompanying drawings, highlight bar 6 is slot wedges of additional length, and slot wedge extends from rotor block 2 on axis direction.When rotor 1 rotation, slot wedge is held in place coil 3.
The first's 20 compressing slot wedge and end windings 4 of bundling belt 5 make them slightly inwardly towards axle 12 bendings.In the second portion 21 of bundling belt 5, highlight bar 6 is outwardly-bent with the inner surface 10 at the outer side contacts bundling belt 5 of breakover point 16 on the radial direction R of rotor 1.
In Fig. 2, highlight bar 6 is bent by means of being installed in the some pads 17 between rotor coil end 4 and the highlight bar 6.Pad 17 comprises non-resilient core 18 and the outer surface layer of being made by soft material 19.Protect the insulation of end winding 4 around the soft material of core 18.The example of suitable soft material is felt and insulating material.
In Fig. 4, the length L 1 of bundling belt is less than the length L 2 of rotor coil end on axis direction a.The advantage of device shown in Figure 4 is, effective cooling of end winding 4.Because bundling belt 5 do not exceed rotor block 2, so drift L3 is arranged on end winding 4, it is not tied is with 5 to cover.
Bundling belt in the accompanying drawing is expressed as non-hollow.Yet it can comprise one or more cavities.
Though machine operation described above is as generator, the utility model can be operating as motor similarly.The utility model is also as different motor type and rotor solutions, for example direct current machine and coil wound rotor.
As mentioned above, the utility model has been described by means of some embodiment.Yet, more than describe not being appreciated that it is restriction to scope of patent protection; Embodiment of the present utility model can change within the scope of the appended claims.
List of parts: 1: rotor; 2: rotor block; 3: coil; 4: end turn; 5: bundling belt; 6: highlight bar; 7: outer surface; 8: the first edges; 9: the second edges; 10: inner surface; 11: soft material; 12: axle; 13: ring in fixed; 14: soft member; 15: support section; 16: turning point; 17: pad; 18: core; 19: layer; 20: first; 21: second portion; A: axis direction; d1、d
2: diameter; e1、e
2: distance; L1、L
2、L
3: length; R: radial direction; R: rotation; s1、s
2: thickness.
Claims (10)
1. the device in the rotor (1), described rotor is around its rotation (r) rotation and comprise rotor block (2) and coil (3) at least, it is outstanding as end winding (4), and bundling belt (5) is assemblied on the highlight bar (6) in the outside of outer surface (7) of rotor coil end (4), and at first edge (8) of the above bundling belt of axis direction (a) (5) of rotor (1) towards second edge (9) of rotor (1) and described bundling belt (5) away from rotor (1), described bundling belt (5) is conical on inner surface (10), it is characterized in that the diameter (d of the inner surface of described bundling belt (5)
1) reduce consistently to breakover point (16) from first edge (8), and the diameter (d of the inner surface of described bundling belt (5)
2) increase to second edge (9) from described breakover point (16).
2. device according to claim 1 is characterized in that, the distance (e from first edge (8) to breakover point (16)
1) greater than distance (e from breakover point (16) to second edge (9)
2).
3. device according to claim 1 is characterized in that, the taper ratio from first edge (8) to breakover point (16) is less than the taper ratio from breakover point (16) to second edge (9).
4. device according to claim 1 is characterized in that, described highlight bar (6) is gone up outwardly-bent with the inner surface (10) of contact at the bundling belt (9) in breakover point (16) outside in the radial direction (R) of rotor.
5. device according to claim 4 is characterized in that, described highlight bar (6) is bent by means of one or more pads (17).
6. device according to claim 5 is characterized in that, described pad (17) comprises non-resilient core (18) and outer surface layer (19), and described outer surface layer (19) comprises soft material.
7. device according to claim 1 is characterized in that, the inner surface (10) of described bundling belt (5) is coarse.
8. device according to claim 1 is characterized in that, the length (L of described bundling belt
1) less than the length (L of the end winding (4) on axis direction (a)
2).
9. device according to claim 1 is characterized in that, described highlight bar (6) is a slot wedge.
10. device according to claim 1 is characterized in that, described motor is coil wound rotor generator or coil wound rotor motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20105410 | 2010-04-19 | ||
| FI20105410A FI20105410A0 (en) | 2010-04-19 | 2010-04-19 | Electric machine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656611U true CN201656611U (en) | 2010-11-24 |
Family
ID=42133253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201907916U Expired - Lifetime CN201656611U (en) | 2010-04-19 | 2010-05-06 | Motor rotor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201656611U (en) |
| FI (1) | FI20105410A0 (en) |
-
2010
- 2010-04-19 FI FI20105410A patent/FI20105410A0/en not_active Application Discontinuation
- 2010-05-06 CN CN2010201907916U patent/CN201656611U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI20105410A0 (en) | 2010-04-19 |
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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: ABB T + D TECHNOLOGY LTD. Free format text: FORMER OWNER: ABB AZIPOD OY Effective date: 20140103 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140103 Address after: Zurich Patentee after: ABB T & D Technology Ltd. Address before: Helsinki Patentee before: ABB Azipod Oy |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180525 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB T & D Technology Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |