JP5762128B2 - Bearing device for vehicle main motor - Google Patents
Bearing device for vehicle main motor Download PDFInfo
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- JP5762128B2 JP5762128B2 JP2011113044A JP2011113044A JP5762128B2 JP 5762128 B2 JP5762128 B2 JP 5762128B2 JP 2011113044 A JP2011113044 A JP 2011113044A JP 2011113044 A JP2011113044 A JP 2011113044A JP 5762128 B2 JP5762128 B2 JP 5762128B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Description
本発明は，車両用主電動機の軸受装置の構成に関するものである。 The present invention relates to a configuration of a bearing device for a vehicular main motor.
車両用主電動機の軸受潤滑は従来からグリースが用いられているが，分解保守期間の延長による保守作業の省力化を図る目的から，分解保守期間の延長が図れる潤滑油の軸受構造の開発研究が進められている。 Conventionally, grease has been used for bearing lubrication of main motors for vehicles. However, in order to save labor in maintenance work by extending the period of disassembly maintenance, research and development of a bearing structure for lubricating oil that can extend the period of disassembly maintenance has been conducted. It is being advanced.
図2は，潤滑油を用いた従来の軸受構造の一例である。1は軸受，2は軸受箱，3は軸受カバ−B，4は軸受押さえ，5は回転子軸，6は油掻揚げ円板，7は軸受カバ−A，8は貯油室，9は圧力緩和室A，10は油戻し穴A，11は圧力緩和室Bである。
従来の軸受構造は，軸受箱と油掻揚げ円板でラビリンス構造をつくり，更に圧力緩和室AおよびBを設けて，圧力緩和室Aと貯油室を連通する油戻し穴Aを設けた構造となっている。この様な構造は潤滑油を用いた軸受シールの従来技術として用いられている。
Fig. 2 shows an example of a conventional bearing structure using lubricating oil. 1 is a bearing, 2 is a bearing housing, 3 is a bearing cover B, 4 is a bearing retainer, 5 is a rotor shaft, 6 is an oil lifting disc, 7 is a bearing cover A, 8 is an oil storage chamber, and 9 is a pressure Relaxation chambers A and 10 are oil return holes A and 11 are pressure relaxation chambers B.
The conventional bearing structure has a structure in which a labyrinth structure is made up of a bearing box and an oil hoisting disk, pressure relief chambers A and B are further provided, and an oil return hole A that connects the pressure relaxation chamber A and the oil storage chamber is provided. It has become. Such a structure is used as a conventional technology for bearing seals using lubricating oil.
しかしながら，このような手段では次のような課題があった。
軸受潤滑に潤滑油を使用した場合，車両用主電動機使用時の主電動機内部の温度上昇や回転子の回転による主電動機内部の圧力変化や主電動機を使用するときの天候や時期の変化によって，主電動機内部と外部の圧力差が大きくなるため，油掻揚げ円板により掻揚げられた油が霧状になりラビリンスのすきまを通って機内外へにじみ出ることがあった。
潤滑油は機内外を汚損し，そのまま長期運転した場合には，貯油室の油量が低下して軸受潤滑不良を起す恐れがある。
However, such means have the following problems.
When lubricating oil is used for bearing lubrication, the temperature rise inside the main motor when using the main motor for vehicles, the pressure change inside the main motor due to the rotation of the rotor, and the changes in weather and timing when using the main motor, Since the pressure difference between the inside and outside of the main motor became large, the oil swirled by the oil-raised disk became mist and oozed out of the machine through the labyrinth gap.
Lubricating oil can contaminate the inside and outside of the machine, and if it is operated for a long period of time, the oil amount in the oil storage chamber may decrease and cause bearing lubrication failure.
上記の課題を解決するために、請求項１の発明によれば、
軸受箱と機外側側面に設けられる第１の軸受カバー、第２の軸受カバーのうち、第２の軸受カバーにより形成される貯油室に、回転子軸とともに回転する油掻揚げ円板を設け、該油掻揚げ円板により、該貯油室に貯められた潤滑油を掻き揚げ、潤滑油を回転子軸に設けた軸受内に供給し、
該第１の軸受カバーと回転子軸の間のすきまを通って漏れてくる潤滑油を溜める円環状の第１の圧力緩和室と、該第２の軸受カバーと回転子軸の間のすきまを通って漏れてくる潤滑油を溜める円環状の第２の圧力緩和室とを設けて、前記第１の圧力緩和室と前記貯油室とを第１の油戻し穴で連通させた軸受を潤滑する車両用主電動機の軸受構造であって、
該第２の圧力緩和室と該貯油室を連通した該第２の油戻し穴と、該第１の軸受カバーにある該第１の圧力緩和室と該貯油室とを連通した該第１の油戻し穴を繋げたことを特徴とする車両用主電動機の軸受構造。
In order to solve the above problem, according to the invention of
Among the first bearing cover and the second bearing cover provided on the outer side surface of the bearing box and the machine, an oil storage disc formed by the second bearing cover is provided with an oil-raised disk that rotates together with the rotor shaft, The oil-raised disk lifts the lubricating oil stored in the oil storage chamber and supplies the lubricating oil into a bearing provided on the rotor shaft.
An annular first pressure relief chamber for storing lubricating oil leaking through the clearance between the first bearing cover and the rotor shaft, and a clearance between the second bearing cover and the rotor shaft. An annular second pressure relief chamber for storing lubricating oil leaking through is provided, and the bearing in which the first pressure relief chamber and the oil storage chamber are communicated with each other through the first oil return hole is lubricated. A bearing structure for a main motor for a vehicle,
The second oil return hole communicating the second pressure relief chamber and the oil storage chamber, and the first pressure relief chamber communicating with the oil storage chamber in the first bearing cover. A bearing structure for a main motor for a vehicle characterized by connecting oil return holes .
すなわち、本発明は，回転子軸に設けた軸受内に潤滑油を供給して軸受を潤滑する車両用主電動機の軸受構造において、
圧力緩和室Aと貯油室を連通する油戻し穴Aを、圧力緩和室Bと貯油室を連通する油戻し穴Bに繋げることにより、油掻揚げ円板が起す圧力差を緩和させることである。
That is, the present invention provides a bearing structure for a vehicular main motor that supplies lubricating oil into a bearing provided on a rotor shaft to lubricate the bearing.
The oil return hole A that connects the pressure relaxation chamber A and the oil storage chamber is connected to the oil return hole B that communicates the pressure relaxation chamber B and the oil storage chamber, thereby reducing the pressure difference caused by the oil hoisting disk. .
本発明は，油潤滑構造の軸受装置を有する車両用主電動機において，潤滑油が圧力緩和室へ引き込まれることを防ぎ，軸受の潤滑性能を良好に維持することができる。また，潤滑油が機内外へにじみ出る現象を防ぎ，車両用主電動機の保守作業の低減に寄与することができる。 The present invention can prevent the lubricating oil from being drawn into the pressure relaxation chamber in a vehicular main motor having a bearing device with an oil lubrication structure, and can maintain the lubrication performance of the bearing well. In addition, the phenomenon of lubricating oil oozing into and out of the machine can be prevented, which can contribute to a reduction in the maintenance work of the vehicle main motor.
図1は，本発明の実施例を示す車両用主電動機の軸受装置の断面図である。
1は軸受，2は軸受箱，3は軸受カバ−B，4は軸受押さえ，5は回転子軸，6は油掻揚げ円板，7は軸受カバ−A，8は貯油室，9は圧力緩和室A，10は油戻し穴A，11は圧力緩和室B，12は油戻し穴Bである。
FIG. 1 is a cross-sectional view of a bearing device for a vehicular main motor showing an embodiment of the present invention.
1 is a bearing, 2 is a bearing housing, 3 is a bearing cover B, 4 is a bearing retainer, 5 is a rotor shaft, 6 is an oil lifting disc, 7 is a bearing cover A, 8 is an oil storage chamber, and 9 is a pressure The relaxation chambers A and 10 are oil return holes A, 11 is a pressure relaxation chamber B, and 12 is an oil return hole B.
軸受１への油の供給は貯油室８に溜められた潤滑油を油掻揚げ円板６が回転することにより上部へ掻揚げ，掻揚げられた潤滑油が軸受箱２や油掻揚げ円板６の側面を伝って軸受１に進入することにより潤滑される。
軸受装置はラビリンス構造によってシールされ，潤滑油の主電動機内外へにじみ出ることを抑制している。
９の圧力緩和室Aと貯油室８を連通する10の油戻し穴Aと１１の圧力緩和室Bと貯油室８を連通する１２の油戻し穴Bは，ラビリンスを通り流れてきた潤滑油を貯油室８に流れ落ちるよう設けられている。
The supply of oil to the
The bearing device is sealed with a labyrinth structure to prevent the lubricating oil from seeping into and out of the main motor.
9 oil return holes A communicating with the pressure relief chamber A and the
本発明は，潤滑油を用いた電動機の軸受構造に設けることができ，油戻し穴を貯油室と繋げることによって，円板などによる軸受内の圧力差が生じる軸受構造にも適用できる。 The present invention can be provided in a bearing structure of an electric motor using lubricating oil, and can also be applied to a bearing structure in which a pressure difference in the bearing due to a disk or the like is generated by connecting an oil return hole to an oil storage chamber.
１ 軸受
２ 軸受箱
３ 軸受カバ−B
４ 軸受押さえ
５ 回転子軸
６ 油掻揚げ円板
７ 軸受カバ−A
８ 貯油室
９ 圧力緩和室A
１０ 油戻し穴A
１１ 圧力緩和室B
１２ 油戻し穴B
1 Bearing 2
4
8
10 Oil return hole A
11 Pressure relief chamber B
12 Oil return hole B
Claims (1)
該第１の軸受カバーと回転子軸の間のすきまを通って漏れてくる潤滑油を溜める円環状の第１の圧力緩和室と、該第２の軸受カバーと回転子軸の間のすきまを通って漏れてくる潤滑油を溜める円環状の第２の圧力緩和室とを設けて、前記第１の圧力緩和室と前記貯油室とを第１の油戻し穴で連通させた軸受を潤滑する車両用主電動機の軸受構造であって、
該第２の圧力緩和室と該貯油室を連通した該第２の油戻し穴と、該第１の軸受カバーにある該第１の圧力緩和室と該貯油室とを連通した該第１の油戻し穴を繋げ、
該第２の圧力緩和室と前記貯油室を連通する第２の油戻し穴を設けたことを特徴とする車両用主電動機の軸受構造。
Among the first bearing cover and the second bearing cover provided on the outer side surface of the bearing box and the machine, an oil storage disc formed by the second bearing cover is provided with an oil-raised disk that rotates together with the rotor shaft, The oil-raised disk lifts the lubricating oil stored in the oil storage chamber and supplies the lubricating oil into a bearing provided on the rotor shaft.
An annular first pressure relief chamber for storing lubricating oil leaking through the clearance between the first bearing cover and the rotor shaft, and a clearance between the second bearing cover and the rotor shaft. An annular second pressure relief chamber for storing lubricating oil leaking through is provided, and the bearing in which the first pressure relief chamber and the oil storage chamber are communicated with each other through the first oil return hole is lubricated. A bearing structure for a main motor for a vehicle,
The second oil return hole communicating the second pressure relief chamber and the oil storage chamber, and the first pressure relief chamber communicating with the oil storage chamber in the first bearing cover. Connect the oil return holes,
A bearing structure for a vehicular main motor, comprising a second oil return hole that communicates the second pressure relaxation chamber and the oil storage chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011113044A JP5762128B2 (en) | 2011-05-20 | 2011-05-20 | Bearing device for vehicle main motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011113044A JP5762128B2 (en) | 2011-05-20 | 2011-05-20 | Bearing device for vehicle main motor |
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| JP2012244787A JP2012244787A (en) | 2012-12-10 |
| JP5762128B2 true JP5762128B2 (en) | 2015-08-12 |
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| CN103516103B (en) * | 2013-03-26 | 2016-02-24 | 淄博高新区成大机械设计研究所 | A kind of Oil-leakage-preventistructure structure of motor |
| CN110375059B (en) * | 2019-07-17 | 2024-04-09 | 成都中车电机有限公司 | Traction motor bearing sealing structure and installation method |
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| JP4657121B2 (en) * | 2006-02-22 | 2011-03-23 | 東洋電機製造株式会社 | Bearing device for vehicle main motor |
| JP4684266B2 (en) * | 2007-08-08 | 2011-05-18 | 東洋電機製造株式会社 | Bearing device for vehicle main motor |
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