AU2014390615B2 - Traction motor three-phase lead connection method and device - Google Patents
Traction motor three-phase lead connection method and device Download PDFInfo
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- AU2014390615B2 AU2014390615B2 AU2014390615A AU2014390615A AU2014390615B2 AU 2014390615 B2 AU2014390615 B2 AU 2014390615B2 AU 2014390615 A AU2014390615 A AU 2014390615A AU 2014390615 A AU2014390615 A AU 2014390615A AU 2014390615 B2 AU2014390615 B2 AU 2014390615B2
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- Prior art keywords
- phase lead
- lead
- stator
- end cover
- junction box
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/505—Fastening of winding heads, equalising connectors, or connections thereto for large machine windings, e.g. bar windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A traction motor three-phase lead connection method and device. Stator coil lead heads (2) are connected in series or in parallel on a stator (1), and then are connected to a three-phase lead (3); the three-phase lead goes upward across a stator clamping ring (6), and enters a junction box (5) through an end cover (4), and is fixed in the junction box; the junction box of the motor cooperates with the end cover, and the shape of the three-phase lead fits the shape of the end cover. In order to ensure reliable operation of the three-phase lead, the outlet hole (7) for the three-phase lead is closed, such that the three-phase lead and the stator end cover are in a closed state; the outlet hole for the three-phase lead is filled with insulating material, and the insulating material and the stator are dipped in paint together to ensure an insulation distance between the three-phase lead and the outlet hole.
Description
Technical Field:
This invention relates to a traction motor three-phase lead connection method and device, and in particular relates to a traction motor three-phase lead connection method and device for a traction motor which is relatively large in motor current, relatively small in axial size and thus relatively narrow in clamping ring, and mainly aims to manufacture the traction motor.
Technical background:
A traction motor is a motor for the traction of trunk railway electric locomotives, industrial and mineral electric locomotives, internal combustion locomotives and various electric vehicles (such as storage battery vehicles, city tramways and underground railway electric vehicles). The traction motor comprises a traction electromotor, a traction generator, an assistant motor and the like. As the traction motor is designed, a three-phase lead is generally led out in a mode where stator coil lead heads are connected in a serial/parallel manner and is subsequently connected with the three-phase output lead, and the three-phase lead penetrates through a motor base through a clamping ring on a base and is fed into a junction box. When being used, the traction motor generally has problems of lead faults including pollution, damaged grounding or partial burning of an outer insulating layer of the lead. Lead burning mostly happens to the lead outlet, and the damage cannot be treated on a vehicle, and the traction motor has to be disassembled to repair it.
Particularly, when the traction motor is relatively small in axial size and is limited by a spatial size, the size of the motor clamping ring is generally relatively small. However the current of the motor is relatively large, so to ensure that the three-phase lead is reliably connected, the current density of the three-phase lead should not be too high, then the wire gauge of the three-phase lead is relatively large. In conclusion, for a structure where the the size of the motor clamping ring is relatively small and the wire gauge of the three-phase lead is relatively large, if the three-phase lead is still led out from the clamping ring, the mechanical strength of the clamping ring can be degraded as the clamping ring is pored, and the operation reliability of the traction motor is degraded.
Therefore, for the structure of a traction motor which is relatively small in axial size and relatively large in current, reasonably selecting an outlet mode of the three-phase lead and ensuring reliable operation of the motor are significant issues to be solved.
Techniques directly identical to the invention were not found when patent documents from
China were retrieved, only a few related documents and reports as follows are associated with the invention:
1. The invention of which the patent number is CN201310143503.X and the name is “Process and Device for Clamping Wound Core into Automobile Traction Motor Bases”.
The invention discloses a process and a device for clamping a wound core into an automobile traction motor base, and in particular relates to a process and a device for clamping a wound core into a motor base on a presser. The device comprises a clamping platform, a support flange, a centering flange sleeve, an upper clamping sleeve and a guide plate, wherein the base is fixed on a clamping platform surface through fastening screws; the support flange is arranged on the base; the support flange is fixed with the base through screws; the centering flange sleeve is mounted inside the support flange; the centering flange sleeve is fitted with the base; the wound core is centered through the centering flange sleeve and is supported by the end surface of the support flange; the outer circle of the wound core is sleeved by a base feeding end, so that the base stands upright above the wound core; the upper end of the base is mounted inside an upper clamping sleeve; the guide plate is directly placed on the upper surface of the upper clamping sleeve. Therefore, when the wound core of a traction motor of a new energy electric automobile is pressed into the base in large-scale production, the lead of the wound core is not damaged, the lead can be effectively and accurately led into the base, the clamping size can be automatically ensured, and materials can be fed and discharged conveniently
2. The invention of which the patent number is CN200810079736.7 and the name is “Motor Lead Connector”. The invention discloses a motor lead connector, and aims to solve the problems of a conventional motor lead connector being easy to bum and inconvenient to assemble and disassemble, the insulating sleeve is easy to scratch off, and the like. The outlet motor lead connector comprises a pair of connectors fitted with each other, wherein each connector comprises a pure copper column body; a counter bore is formed in one end surface of the column body; a semicircular column body and a columnar convex block are manufactured on another end surface of the column body in the axial direction of the column body; a bayonet key groove is formed between the semicircular column body and the columnar convex block; an annular groove is formed in an inner plane of the semicircular column body; a column pin is fixed inside the annular groove; a columnar tenon is manufactured on an end surface of the semicircular column body in the axial direction of the column body
3. The utility model of which the patent number is CN200820106517.9 and the name is “Motor Lead Connector”. The utility model discloses a motor lead connector, and aims to solve the problems of a conventional motor lead connector being easy to burn and inconvenient to assemble and disassemble, the insulating sleeve is easy to scratch off, and the like. The outlet motor lead connector comprises a pair of connectors fitted with each other, wherein each connector comprises a pure copper column body; a counter bore is formed in one end surface of the column body; a semicircular column body and a columnar convex block are manufactured on another end surface of the column body in the axial direction of the column body; a bayonet key groove is formed between the semicircular column body and the columnar convex block; an annular groove is formed in an inner plane of the semicircular column body; a column pin is fixed inside the annular groove; a columnar tenon is manufactured on an end surface of the semicircular column body in the axial direction of the column body. When leads are connected, solid, reliable, convenient and efficient connection of leads can be achieved by only using one same connector at two ends. After two connectors are connected, the size is uniform, the protecting sleeve is not scratched off, and the fault of motor connector burning can be effectively avoided. The utility model is particularly applicable to the lead connection of a traction motor and a large locomotive lead.
4. The utility model of which the patent number is CN201120388278 and the name is “Lead Structure of a Direct-Current Traction Electromotor”. The utility model discloses a lead structure of a direct-current traction electromotor. The lead structure comprises an lead shell which is arranged on a motor shell; an outlet through hole (through which a motor lead penetrates) is formed in the lead shell; a locking screw nut is connected with the lead shell; a through hole (through which the motor lead penetrates) is formed in the locking screw nut; after the lead shell and the locking screw nut are mounted in place, the outlet through hole is communicated with the through hole of the locking screw nut; locking teeth are arranged at the end part fitted with the locking screw nut of the lead shell.
Although the patents relate to motor leads, detailed analysis on the patents shows that the patents are not involved with prominent problems where the mechanical strength of a clamping ring can be degraded and the operation reliability of a traction motor can be also degraded if a three-phase lead which is relatively large in wire gauge is still led out from the clamping ring which is relatively small in size, therefore, the problems need to be solved.
BRIEL SUMMARY OL THE INVENTION
The invention aims to solve the technical problems of the mechanical strength of a clamping ring being degraded and the operation reliability of a traction motor also being degraded if a three-phase lead which is relatively large in wire gauge is still led out from the clamping ring which is relatively small in size, and the technical problem that the unreliability of operation can be easily caused, and provides a traction motor three-phase lead connection method and device which are applicable to a traction motor three-phase lead which is relatively large in current and relatively small in axial size, and by adopting the method and the device, the technical problems that the traction motor three-phase lead which is relatively large in current and relatively small in axial size is hard to lead out and unreliability of operation can be easily caused can be solved.
The technical scheme for the purposes of the invention is a traction motor three-phase lead connection method. Stator coil lead heads are connected in series or in parallel in a stator, and then are connected to a three-phase lead; the three-phase lead goes upward across a stator clamping ring, and enters a junction box through an end cover; the junction box of the motor fits with the end cover, and the three-phase lead is fixed in the junction box; an outlet hole for the three-phase lead is sealed, the shape of the three-phase lead fits the shape of the end cover, and the three-phase lead is fixed in the junction box.
Furthermore, in order to ensure reliable operation of the three-phase lead, the outlet hole for the three-phase lead is sealed, such that the three-phase lead and the stator end cover are in a sealing condition; the outlet hole for the three-phase lead is filled with insulating material, and the insulating material and the stator are by vacuum pressure impregnated together to ensure an enough insulation distance between the three-phase lead and the outlet hole, so that long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented.
Furthermore, the outlet part of the end cover is fitted with the junction box and is sealed with a sealant, so that pollution of the lead is reduced.
Furthermore, in order to ensure reliable fixation of the lead, a fixing bracket is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket in a bound manner, and insulating treatment is implemented, so that influence to the lead can be reduced when the motor is operated, and the three-phase lead is relatively safely and reliably fixed.
The traction motor three-phase lead device disclosed according to the method comprises a motor stator, stator coil lead heads, a three-phase lead, an end cover and a junction box, wherein the stator coil lead heads are connected in series or in parallel on the stator, and then are connected to the three-phase lead; the three-phase lead goes upward across a stator clamping ring, and enters the junction box through the end cover; the junction box of the motor fits with the end cover, and the three-phase lead is fixed in the junction box; an outlet hole for the three-phase lead is sealed, the shape of the three-phase lead fits the shape of the end cover, and the three-phase lead is fixed in the junction box.
Furthermore, in order to ensure reliable operation of the three-phase lead, the outlet hole for the three-phase lead is sealed; the outlet hole for the three-phase lead is filled with aromatic polyamide needled felt; the aromatic polyamide needled felt and the stator are by vacuum pressure impregnated together to ensure an enough insulation distance between the three-phase lead and the outlet hole, so that long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented.
Furthermore, the outlet part of the end cover is fitted with the junction box and is sealed with a sealant, so that pollution of the lead can be reduced.
Furthermore, in order to ensure reliable fixation of the lead, a fixing bracket is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket in a bound manner, and insulating treatment is implemented, so that influence to the lead can be reduced when the motor is operated, and the three-phase lead is relatively safely and reliably fixed.
The invention has the beneficial effects that the three-phase lead directly enters the junction box through the end cover and is connected with a three-phase cable, the junction box is mounted above the stator clamping ring, and the junction box is connected with the stator end cover, so that damage to the clamping ring can be effectively avoided when the three-phase lead penetrates through the stator clamping ring; moreover, as the outlet hole of the three-phase lead is filled with aromatic polyamide needled felt, the insulating distance of the three-phase lead and the outlet hole can be ensured, long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented; when the motor is operated, problems such as low insulation, discharge breakdown and unreliable fixation caused by vibration, pollution and the like can be prevented, meanwhile the outlet mode is simple and convenient to implement, and the motor operation reliability is improved.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
FIG. 1 shows a structural diagram of one embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
The invention is further described with a figure and an embodiment.
The figure show a traction motor three-phase lead connection method provided by the invention, comprising the following steps that stator coil lead heads are connected in series or in parallel in a stator, and then are connected to a three-phase lead; the three-phase lead goes upward across a stator clamping ring, and enters a junction box through an end cover; the junction box of the motor fits with the end cover, and the three-phase lead is fixed in the junction box; an outlet hole for the three-phase lead is sealed, the shape of the three-phase lead fits the shape of the end cover, and the three-phase lead is fixed in the junction box.
Furthermore, in order to ensure reliable operation of the three-phase lead, the outlet hole for the three-phase lead is sealed, such that the three-phase lead and the stator end cover are in a sealing condition; the outlet hole for the three-phase lead is filled with insulating material, and the insulating material and the stator are by vacuum pressure impregnated together to ensure an enough insulation distance between the three-phase lead and the outlet hole, so that long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented.
Furthermore, the outlet part of the end cover is fitted with the junction box and is sealed with a sealant, so that pollution of the lead is reduced.
Furthermore, in order to ensure reliable fixation of the lead, a fixing bracket is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket in a bound manner, and insulating treatment is implemented, so that influence to the lead can be reduced when the motor is operated, and the three-phase lead is relatively safely and reliably fixed.
The traction motor three-phase lead device disclosed according to the method comprises a motor stator 1, stator coil lead heads 2, a three-phase lead 3, an end cover 4 and a junction box 5, wherein the stator coil lead heads 2 are connected in series or in parallel on the stator 1, and then are connected to the three-phase lead 3; the three-phase lead 3 goes upward across a stator clamping ring 6, and enters the junction box 5 through the end cover 4; the junction box 5 of the motor fits with the end cover 4, and the three-phase lead 3 is fixed in the junction box 5; an outlet hole for the three-phase lead 3 is closed, the shape of the three-phase lead 3 fits the shape of the end cover 4, and the three-phase lead 3 is fixed in the junction box 5.
Furthermore, in order to ensure reliable operation of the three-phase lead 3, the outlet hole for the three-phase lead 3 is closed; the outlet hole 7 for the three-phase lead is filled with insulating material, and the insulating material and the stator are by vacuum pressure impregnated together to ensure an enough insulation distance between the three-phase lead and the outlet hole, so that long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented.
Furthermore, the insulating material is aromatic polyamide needled felt; the aromatic polyamide needled felt and the stator are by vacuum pressure impregnated together. Furthermore, the outlet part of the end cover is fitted with the junction box and is sealed with a sealant, so that pollution of the lead can be reduced.
Furthermore, in order to ensure reliable fixation of the lead, a fixing bracket 8 is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket 8 in a bound manner, and insulating treatment is implemented, so that influence to the lead can be reduced when the motor is operated, and the three-phase lead is relatively safely and reliably fixed.
The invention has the beneficial effects that the three-phase lead directly enters the junction box through the end cover and is connected with a three-phase cable, the junction box is mounted above the stator clamping ring, and the junction box is connected with the stator end cover, so that damage to the clamping ring can be effectively avoided when the three-phase lead penetrates through the stator clamping ring; moreover, as the outlet hole of the three-phase lead is filled with aromatic polyamide needled felt, the insulating distance of the three-phase lead and the outlet hole can be ensured, long-term stable operation can be ensured, and grounding caused by dampness, pollution and the like can be prevented; when the motor is operated, problems such as low insulation, discharge breakdown and unreliable fixation caused by vibration, pollution and the like can be prevented, meanwhile the outlet mode is simple and convenient to implement, and the motor operation reliability is improved.
Obviously, the embodiment is one living example only made to describe the invention, and any simple modification and substitution made by a person skilled in the art within the
2014390615 05 Feb 2018 field belong to the protection of the invention.
Throughout this specification and the claims that follow unless the context requires otherwise, the words 'comprise' and 'include' and variations such as 'comprising' and 'including' will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.
The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form of suggestion that such prior art forms part of the common general knowledge of the technical field.
2014390615 05 Feb 2018
Claims (9)
- WHAT IS CLAIMED IS:1. A traction motor three-phase lead connection method, wherein stator coil lead heads are connected in series or in parallel in a stator, and then are connected to a three-phase lead; the three-phase lead goes upward across a stator clamping ring, and enters a junction box through an end cover; the junction box of the motor fits with the end cover; an outlet hole for the three-phase lead is sealed, the shape of the three-phase lead fits the shape of the end cover, and the three-phase lead is fixed in the junction box; wherein the method reduces or avoids a damage to the stator clamping ring when the three-phase lead penetrates through the stator clamping ring.
- 2. The traction motor three-phase lead connection method according to claim 1, characterized in that in order to ensure reliable operation of the three-phase lead, the outlet hole for the three-phase lead is sealed, such that the three-phase lead and the stator end cover are in a sealing condition; the outlet hole for the three-phase lead is filled with insulating material, and the insulating material and the stator are by vacuum pressure impregnated together to ensure an enough insulation distance between the three-phase lead and the outlet hole.
- 3. The traction motor three-phase lead connection method according to claim 2, characterized in that the outlet part of the end cover is fitted with the junction box and is sealed with a sealant.
- 4. The traction motor three-phase lead connection method according to claim 1, characterized in that to ensure reliable fixation of the lead, a fixing bracket is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket in a bound manner, and insulating treatment is implemented.
- 5. A traction motor three-phase lead device, comprising a motor stator, stator coil lead heads, a three-phase lead, an end cover and a junction box, characterized in that the stator coil lead heads are connected in series or in parallel on the stator, and then are connected to the2014390615 05 Feb 2018 three-phase lead; the three-phase lead goes upward across a stator clamping ring, and enters the junction box through the end cover; the junction box of the motor fits with the end cover; an outlet hole for the three-phase lead is sealed, the shape of the three-phase lead fits the shape of the end cover, and the three-phase lead is fixed in the junction box; wherein the device is adapted to reduce or avoid a damage to the stator clamping ring when the threephase lead penetrates through the stator clamping ring.
- 6. The traction motor three-phase lead device according to claim 5, characterized in that the outlet hole of the three-phase lead is sealed; the outlet hole of the three-phase lead is filled with insulating material, and the insulating material and the stator are by vacuum pressure impregnated together.
- 7. The traction motor three-phase lead device according to claim 6, characterized in that the insulating material is aromatic polyamide needled felt; the aromatic polyamide needled felt and the stator are by vacuum pressure impregnated.
- 8. The traction motor three-phase lead device according to claim 5, characterized in that the outlet part of the end cover is fitted with the junction box and is sealed with a sealant.
- 9. The traction motor three-phase lead device according to claim 5, characterized in that to ensure reliable fixation of the lead, a fixing bracket is installed on a clamping ring of engine base, the three-phase lead is fixed with the bracket in a bound manner, and insulating treatment is implemented.8 43 7 5 6 jFIG.1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/074896 WO2015154221A1 (en) | 2014-04-08 | 2014-04-08 | Traction motor three-phase lead connection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2014390615A1 AU2014390615A1 (en) | 2016-10-27 |
| AU2014390615B2 true AU2014390615B2 (en) | 2018-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2014390615A Active AU2014390615B2 (en) | 2014-04-08 | 2014-04-08 | Traction motor three-phase lead connection method and device |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN106464060B (en) |
| AU (1) | AU2014390615B2 (en) |
| WO (1) | WO2015154221A1 (en) |
| ZA (1) | ZA201606702B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713723A (en) * | 2020-12-25 | 2021-04-27 | 中车永济电机有限公司 | Radially arranged traction motor conducting ring structure for locomotive |
| CN114696522B (en) * | 2022-05-05 | 2024-05-14 | 大连钰霖电机有限公司 | Three-phase asynchronous motor convenient to wire |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918830U (en) * | 2010-12-29 | 2011-08-03 | 株洲联诚集团有限责任公司 | Variable-frequency motor with rear-end wire outlet structure for high-power locomotive |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3508687B2 (en) * | 1999-07-12 | 2004-03-22 | 株式会社デンソー | Rotating electric machine |
| JP2003209944A (en) * | 2002-01-10 | 2003-07-25 | Mitsubishi Electric Corp | Rotating electric machine and manufacturing method therefor |
| JP2006211810A (en) * | 2005-01-27 | 2006-08-10 | Denso Corp | Segment connection type rotary electric machine |
| CN103858319B (en) * | 2011-10-12 | 2017-06-09 | 三菱电机株式会社 | The outgoing line connection structure of electric rotating machine |
| CN202231544U (en) * | 2011-10-13 | 2012-05-23 | 常州杨氏电机有限公司 | Leading-out wire structure of direct current (DC) traction motor |
| CN202395563U (en) * | 2011-11-21 | 2012-08-22 | 哈尔滨电机厂有限责任公司 | Sliding support pin device of generator stator parallel connection lead |
| CN202918108U (en) * | 2012-10-29 | 2013-05-01 | 大洋电机新动力科技有限公司 | Outlet structure of motor |
| CN203456974U (en) * | 2013-09-05 | 2014-02-26 | 江苏三江电器集团有限公司 | Plug-in outgoing line structure of motor |
-
2014
- 2014-04-08 AU AU2014390615A patent/AU2014390615B2/en active Active
- 2014-04-08 CN CN201480077441.XA patent/CN106464060B/en active Active
- 2014-04-08 WO PCT/CN2014/074896 patent/WO2015154221A1/en active Application Filing
-
2016
- 2016-09-28 ZA ZA2016/06702A patent/ZA201606702B/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918830U (en) * | 2010-12-29 | 2011-08-03 | 株洲联诚集团有限责任公司 | Variable-frequency motor with rear-end wire outlet structure for high-power locomotive |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015154221A1 (en) | 2015-10-15 |
| CN106464060A (en) | 2017-02-22 |
| AU2014390615A1 (en) | 2016-10-27 |
| CN106464060B (en) | 2019-10-29 |
| ZA201606702B (en) | 2020-05-27 |
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| FGA | Letters patent sealed or granted (standard patent) | ||
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Owner name: CRRC ZHUZHOU ELECTRIC CO., LTD. Free format text: FORMER NAME(S): CSR ZHUZHOU ELECTRIC CO., LTD. |