CN107800220B - Electric wheel vehicle and traction motor thereof - Google Patents
Electric wheel vehicle and traction motor thereof Download PDFInfo
- Publication number
- CN107800220B CN107800220B CN201711329751.8A CN201711329751A CN107800220B CN 107800220 B CN107800220 B CN 107800220B CN 201711329751 A CN201711329751 A CN 201711329751A CN 107800220 B CN107800220 B CN 107800220B
- Authority
- CN
- China
- Prior art keywords
- ring
- rotor
- insulating material
- resistant insulating
- traction motor
- 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.)
- Active
Links
- 239000011810 insulating material Substances 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004760 aramid Substances 0.000 claims description 8
- 229920003235 aromatic polyamide Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 3
- -1 polyisophthaloyl Polymers 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 15
- 239000004576 sand Substances 0.000 abstract description 13
- 238000004804 winding Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 8
- 229920000784 Nomex Polymers 0.000 description 4
- 239000004763 nomex Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses a traction motor of an electric wheel vehicle, which comprises a rotor iron core, an end ring and a rotor conducting bar; the high-temperature-resistant insulating material ring is connected to the inner side of each rotor conducting bar between the end ring and the rotor core so as to block particles in the air flow from passing through. According to the traction motor provided by the invention, the inner side of each rotor conducting bar between the end ring and the rotor core is connected with the high-temperature-resistant insulating material ring, so that particles in cold air can be prevented from passing through gaps among the conducting bars by the high-temperature-resistant insulating material ring, and the particles such as sand particles mixed in the air can be effectively prevented from vertically striking the end part of the stator coil winding through the gaps among the conducting bars, so that the insulation of the end part of the stator coil is damaged, and the insulation of the end part of the stator coil is further effectively protected. The invention also discloses an electric wheel vehicle with the traction motor, and the electric wheel vehicle also has the technical effects.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a traction motor of an electric wheel vehicle and the electric wheel vehicle.
Background
Along with the increasing demand of mining electric wheel dumpers in recent years, the reliability requirement of the electric wheel dumpers is higher and higher, the working environment of the electric wheel dumpers is generally bad, sand dust is large, and whether the electric wheel dumpers can run safely and stably or not is independent of the insulation reliability of a motor.
The traction motor of the electric wheel dumper usually adopts a forced ventilation cooling mode, cooling air is input into the motor through a fan, and the cooling air is discharged from a non-transmission end of the motor after cooling the motor. However, the running environment of the electric wheel dumper is quite severe, sand and dust are quite serious, the sand and dust protection requirement is not considered in the conventional traction motor, only the wind of the motor needs to be filtered through a sand and dust filter, but a small amount of sand and dust particles still exist in the practical process and are not filtered, the sand and dust particles enter the motor, when the motor rotor rotates at a high speed, the rotor guide bars are equivalent to a fan blade rotating at a high speed, the sand and dust particles entering the motor can be quickly sucked, and finally the sand and dust particles collide at the end of a motor winding through a gap between the guide bars, so that the insulation of a coil at the end of a stator winding is damaged by long-term impact.
In summary, how to effectively solve the problem that the forced ventilation cooling of the motor damages the insulation of the stator winding end coil is an urgent need of those skilled in the art.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a traction motor of an electric vehicle, which is structurally designed to effectively solve the problem of damage to insulation of a stator winding end coil caused by forced air cooling of the motor, and a second object of the present invention is to provide an electric vehicle including the traction motor.
In order to achieve the first object, the present invention provides the following technical solutions:
a traction motor of an electric wheel vehicle comprises a rotor iron core, an end ring and a rotor conducting bar; the high-temperature-resistant insulating material ring is connected to the inner side of each rotor conducting bar between the end ring and the rotor core so as to block particles in the air flow from passing through.
Preferably, in the traction motor of the electric vehicle, the high-temperature-resistant insulating material rings are bonded to the inner sides of the rotor bars, respectively.
Preferably, in the traction motor of an electric vehicle, the high-temperature-resistant insulating material ring has a width not smaller than a distance between the end ring and the rotor core.
Preferably, in the traction motor of the electric vehicle, the high-temperature-resistant insulating material ring is an aromatic polyamide material ring.
Preferably, in the traction motor of the electric vehicle, the high-temperature-resistant insulating material ring is a polyisophthaloyl metaphenylene diamine cloth ring.
The traction motor provided by the invention comprises an iron core, an end ring, a rotor conducting bar and a high-temperature-resistant insulating material ring. The high-temperature-resistant insulating material rings are connected to the inner sides of the rotor bars between the end rings and the rotor core so as to block particles in the air flow from passing through.
According to the traction motor provided by the invention, the inner side of each rotor conducting bar between the end ring and the rotor core is connected with the high-temperature-resistant insulating material ring, so that particles in cold air can be prevented from passing through gaps among the rotor conducting bars, and the particles such as sand particles mixed in the air can be effectively prevented from vertically striking the end part of the stator coil winding through the gaps among the rotor conducting bars, so that the insulation of the end part of the stator coil is damaged, and the insulation of the end part of the stator coil is effectively protected.
In order to achieve the second object, the present invention also provides an electric vehicle including any one of the traction motors described above. Because the traction motor has the technical effects, the electric wheel vehicle with the traction motor has the corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic partial structure of a traction motor according to an embodiment of the present invention.
The figures are marked as follows:
the rotor core 1, the end ring 2, the rotor conducting bars 3 and the high-temperature resistant insulating material ring 4; the arrows in the figure show the cooling air flow direction.
Detailed Description
The embodiment of the invention discloses a traction motor, which is used for avoiding damage to insulation of an end coil of a stator winding caused by forced ventilation cooling of the motor.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic partial structure of a traction motor according to an embodiment of the invention.
In one embodiment, the traction motor provided by the invention comprises an iron core, an end ring 2, a rotor bar 3 and a high-temperature resistant insulating material ring 4.
The structure and the matching relationship of the iron core, the end ring 2 and the rotor bar 3 refer to the prior art, and are not described herein. A ring 4 of high temperature resistant insulating material is attached to the inside of each rotor bar 3 between the end ring 2 and the rotor core 1 to block the passage of particles in the air flow. The high-temperature-resistant insulating material ring 4, i.e. the annular structure made of high-temperature-resistant insulating material, is arranged to fit the inner sides of the rotor bars 3, so that gaps between the rotor bars 3 are blocked. Specifically, the high-temperature-resistant insulating material ring 4 is disposed inside the rotor bars 3 between the end ring 2 and the rotor core 1. The inner side here means the inner and outer direction in the radial direction, that is, the bottom end of the rotor bar 3 shown in fig. 1.
The high temperature resistant insulating material ring 4 is used for blocking particles in the air flow from passing through, that is, the high temperature resistant insulating material ring not only has high temperature resistant and insulating properties, but also has the compactness meeting the requirement of blocking particles in the air flow from passing through, and the specific compactness requirement can be set according to the requirement without limitation. Preferably, the high temperature resistant insulating material ring 4 can prevent the cooling air from passing through the gaps between the rotor bars 3, namely can play a role in sealing, so that sand grains in the air and the like can be completely prevented from vertically striking the stator coil winding end parts through the gaps between the rotor bars 3, and the insulation damage of the stator coil end parts is avoided.
For other structures such as the stator of the traction motor, please refer to the prior art, and the description thereof is omitted herein.
According to the traction motor provided by the invention, the inner side of each rotor conducting bar 3 between the end ring 2 and the rotor core 1 is connected with the high-temperature-resistant insulating material ring 4, and the high-temperature-resistant insulating material ring 4 can prevent particles in cold air from passing through gaps among the conducting bars, so that the particles such as sand particles mixed in the air can be effectively prevented from vertically striking the end part of the stator coil winding through the gaps among the conducting bars, the insulation of the end part of the stator coil is damaged, and the insulation of the end part of the stator coil is further effectively protected.
Specifically, the high temperature resistant insulating material rings 4 are bonded to the inner sides of the rotor bars 3, respectively. In the mounting process, a high-temperature-resistant insulating material layer may be laid on the inner side of each rotor bar 3 between the end ring 2 and the rotor core 1, and formed into a ring shape, thereby forming the high-temperature-resistant insulating material ring 4. And then the high temperature resistant insulating material layer is firmly bonded with the inner side of each rotor conducting bar 3 through an adhesive. The type of specific binder, etc. may be set as desired, and are not specifically described herein. Of course, other conventional fixing connection methods may be used to fix the high temperature resistant insulating material ring 4 to the inner side of the rotor bar 3, such as by binding. But the bonding mode is convenient to operate, has high connection strength, and is beneficial to ensuring the flatness of the high-temperature-resistant insulating material ring 4.
Preferably, the width of the high temperature resistant insulating material ring 4 is not smaller than the distance between the end ring 2 and the rotor core 1. That is, the high temperature resistant insulating material ring 4 fills the gap between the end ring 2 and the rotor core 1 in the axial direction, so that cooling air cannot enter the stator coil end from the gap between the end ring 2 and the rotor bar 3 of the rotor core 1, and the damage of the insulation of the stator coil end caused by the cooling air is completely avoided. If necessary, for example, for installation convenience, the width of the high-temperature-resistant insulating material ring 4 may be set smaller than the distance between the end ring 2 and the rotor core 1, the width difference between the end ring 2 and the rotor core 1 is an allowable width difference, and the size of the allowable width difference may be set according to the need, so that the high-temperature-resistant insulating material ring 4 can be installed conveniently while the insulating protection function on the end part of the stator coil is effectively played.
On the basis of the above embodiments, the high temperature resistant insulating material ring 4 is an aromatic polyamide material ring. Namely, the aromatic polyamide material is adopted to prepare the high-temperature resistant insulating material layer and the annular structure. The aromatic polyamide fiber (abbreviated as aramid) is a synthetic fiber prepared by polycondensation spinning with aromatic as a raw material. The fiber has good heat resistance and insulating performance, stable working chemical performance and good resistance to weak acid, weak base and most organic solvents.
Further, the high-temperature resistant insulating material ring 4 is a polyisophthaloyl metaphenylene diamine cloth ring. Namely, a Nomex cloth plate is adopted, and a circle of rotor conducting bars 3 between the motor rotor core 1 and the end ring 2 are arranged at the bottom. Nomex (Nomex), a meta-aramid, also known as aramid 1313. It features high heat resistance and strength. It can always keep stable material performance at 250 ℃. The Nomex fabric board has excellent high temperature resistance, flame retardance, no toxicity and good electrical and mechanical properties. It is mainly used as high-temperature filtering material and insulating material. Of course, other refractory insulating material rings 4 made of refractory insulating materials conventional in the art may be used as desired.
In summary, the traction motor provided by the invention effectively prevents fine sand particles from impacting on the insulation of the end part of the stator coil at a high speed through the gaps between the rotor bars 3 by arranging the high-temperature-resistant insulating material ring 4 as a protection device, and effectively protects the insulation of the end part of the stator coil from being damaged.
Based on the traction motor provided in the above embodiment, the present invention also provides an electric vehicle including any one of the traction motors in the above embodiment. Since the electric vehicle employs the traction motor in the above embodiment, the electric vehicle has the advantageous effects described in the above embodiment.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A traction motor of an electric wheel vehicle comprises a rotor iron core, an end ring and a rotor conducting bar; the rotor core is characterized by further comprising a high-temperature-resistant insulating material ring, wherein the high-temperature-resistant insulating material ring is connected to the inner side of each rotor conducting bar between the end ring and the rotor core so as to block particles in the air flow from passing through;
the high-temperature-resistant insulating material rings are respectively bonded with the inner sides of the rotor bars;
the width of the high-temperature-resistant insulating material ring is not smaller than the distance between the end ring and the rotor core.
2. The traction motor of an electric vehicle of claim 1, wherein the ring of high temperature resistant insulating material is a ring of aromatic polyamide material.
3. The traction motor of an electric vehicle according to claim 2, wherein the high temperature resistant insulating material ring is a polyisophthaloyl metaphenylene diamine cloth ring.
4. An electric vehicle comprising a traction motor as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329751.8A CN107800220B (en) | 2017-12-13 | 2017-12-13 | Electric wheel vehicle and traction motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329751.8A CN107800220B (en) | 2017-12-13 | 2017-12-13 | Electric wheel vehicle and traction motor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107800220A CN107800220A (en) | 2018-03-13 |
| CN107800220B true CN107800220B (en) | 2023-11-21 |
Family
ID=61537814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711329751.8A Active CN107800220B (en) | 2017-12-13 | 2017-12-13 | Electric wheel vehicle and traction motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107800220B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005800A1 (en) * | 1998-04-02 | 2000-02-03 | Brook Motors Limited | Electrical machine |
| CN201038844Y (en) * | 2007-04-24 | 2008-03-19 | 中国北车集团永济电机厂 | Novel motor rotor structure |
| CN201191783Y (en) * | 2008-02-18 | 2009-02-04 | 上海电气集团上海电机厂有限公司 | Thin wall guard ring for large high-speed motor |
| CN101557149A (en) * | 2008-04-10 | 2009-10-14 | 何君 | Rotor structure of high-speed induction motor |
| CN203434823U (en) * | 2013-07-19 | 2014-02-12 | 常州新区金康精工机械有限公司 | Mould of motor stator iron drawer |
| KR20140088266A (en) * | 2012-12-28 | 2014-07-10 | 주식회사 효성 | Rotor Structure of Electric Rotating Machine |
| CN106026582A (en) * | 2016-08-12 | 2016-10-12 | 中车永济电机有限公司 | Rotor structure for reducing asynchronous motor cage rotor core punching tooth expansion |
| JP2016201902A (en) * | 2015-04-10 | 2016-12-01 | 株式会社日立製作所 | Induction machine, and induction machine drive system and railway vehicle that use the same |
| CN206077098U (en) * | 2016-09-27 | 2017-04-05 | 珠海英搏尔电气股份有限公司 | Rotor |
| CN207766055U (en) * | 2017-12-13 | 2018-08-24 | 中车株洲电机有限公司 | A kind of electric vehicle and its traction electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5155420B2 (en) * | 2011-03-11 | 2013-03-06 | ファナック株式会社 | Cage rotor of induction motor for brazing end ring and bar and manufacturing method thereof |
-
2017
- 2017-12-13 CN CN201711329751.8A patent/CN107800220B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005800A1 (en) * | 1998-04-02 | 2000-02-03 | Brook Motors Limited | Electrical machine |
| CN201038844Y (en) * | 2007-04-24 | 2008-03-19 | 中国北车集团永济电机厂 | Novel motor rotor structure |
| CN201191783Y (en) * | 2008-02-18 | 2009-02-04 | 上海电气集团上海电机厂有限公司 | Thin wall guard ring for large high-speed motor |
| CN101557149A (en) * | 2008-04-10 | 2009-10-14 | 何君 | Rotor structure of high-speed induction motor |
| KR20140088266A (en) * | 2012-12-28 | 2014-07-10 | 주식회사 효성 | Rotor Structure of Electric Rotating Machine |
| CN203434823U (en) * | 2013-07-19 | 2014-02-12 | 常州新区金康精工机械有限公司 | Mould of motor stator iron drawer |
| JP2016201902A (en) * | 2015-04-10 | 2016-12-01 | 株式会社日立製作所 | Induction machine, and induction machine drive system and railway vehicle that use the same |
| CN106026582A (en) * | 2016-08-12 | 2016-10-12 | 中车永济电机有限公司 | Rotor structure for reducing asynchronous motor cage rotor core punching tooth expansion |
| CN206077098U (en) * | 2016-09-27 | 2017-04-05 | 珠海英搏尔电气股份有限公司 | Rotor |
| CN207766055U (en) * | 2017-12-13 | 2018-08-24 | 中车株洲电机有限公司 | A kind of electric vehicle and its traction electric machine |
Non-Patent Citations (1)
| Title |
|---|
| 邓日江 ; .JD160A型变频异步牵引电机.电力机车与城轨车辆.2012,(第03期),第27-30页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107800220A (en) | 2018-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4957874B2 (en) | Electric motor and electric device including the same | |
| TWI509948B (en) | Motor of ceiling fan | |
| US10436204B2 (en) | Fan assembly for cooling electric machine and electric machine incorporating same | |
| US10348167B2 (en) | Ceiling fan motor | |
| CN104702011A (en) | Rotor of rotating electrical machine and rotating electrical machine | |
| US20140184004A1 (en) | Electric motor | |
| CN105375693A (en) | External rotor motor | |
| CN109194035A (en) | Motor with oil cooled system system | |
| EP2662959A2 (en) | Rotating electric machine | |
| CN202602468U (en) | Motor with electrical equipment equipped with same | |
| CN107800220B (en) | Electric wheel vehicle and traction motor thereof | |
| CN103001363B (en) | Motor and stator coil group and cooling fan thereof | |
| EP3232537B1 (en) | Interior permanent magnet rotor hubs | |
| CN106385122A (en) | Honeycomb-type closed ventilation cooling device for motor | |
| CN102299584A (en) | Rotor fan for an electric machine | |
| US20200321830A1 (en) | Motor and blower | |
| US20130342068A1 (en) | Motor and electric equipment using same | |
| CN207766055U (en) | A kind of electric vehicle and its traction electric machine | |
| CN207339896U (en) | A kind of micromatic setting for router Fast Installation | |
| CN105048716A (en) | Integrated-type motor with impeller | |
| RU2290735C1 (en) | Double-ended abutting induction electrical machine with built-in brake | |
| CN106911200B (en) | Stent-type motor and blower and dust catcher with it | |
| JP5656795B2 (en) | Air conditioner | |
| JP6311471B2 (en) | Compressor | |
| KR101718741B1 (en) | Pole coil supprot plate and pole coil of salient pole type generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |