JP2014003817A - Main electric motor for vehicle - Google Patents

Main electric motor for vehicle Download PDF

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Publication number
JP2014003817A
JP2014003817A JP2012137831A JP2012137831A JP2014003817A JP 2014003817 A JP2014003817 A JP 2014003817A JP 2012137831 A JP2012137831 A JP 2012137831A JP 2012137831 A JP2012137831 A JP 2012137831A JP 2014003817 A JP2014003817 A JP 2014003817A
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Prior art keywords
oil
fan
electric motor
main electric
bearing
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Pending
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JP2012137831A
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Japanese (ja)
Inventor
Akira Yasunaga
晃 安永
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Toyo Electric Manufacturing Ltd
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Toyo Electric Manufacturing Ltd
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Priority to JP2012137831A priority Critical patent/JP2014003817A/en
Publication of JP2014003817A publication Critical patent/JP2014003817A/en
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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

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  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

PROBLEM TO BE SOLVED: To meet demands for efficiently cooling a bearing and preventing the heat damage of the bearing in a totally-enclosed main electric motor, which tends to cause particularly large temperature increase, even though higher heat resistance is achieved in oil lubrication compared to grease lubrication and thus the upper temperature limit of the main electric motor is set high in a main electric motor for a vehicle which adopts the oil lubrication.SOLUTION: Each oil scoop circular plate attached to a rotor of a main electric motor for a vehicle rotates thereby generating a suction force near an outlet of an oil passing path which is located close to the circular plate. A lubrication oil is circulated in exterior oil passing tubes or oil accumulation chambers of two systems, which connect the fan side with the anti-fan side, by the suction force and efficient cooling is performed. The main electric motor for the vehicle, in which temperature rise of a bearing is suppressed by supplying the cooled lubrication oil to the bearing, is provided.

Description

本発明は、回転子軸に設けた軸受に、潤滑油を供給する構造をもつ車両用主電動機に関するものである。   The present invention relates to a vehicular main motor having a structure for supplying lubricating oil to a bearing provided on a rotor shaft.

車両用主電動機の軸受の潤滑は、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、油潤滑の軸受構造の開発研究が進められている。主電動機の運転時においては、軸受が常に潤滑される必要があるため、回転子軸に設けた軸受に潤滑油が常に供給される構造となっている。また、潤滑油はグリースより耐熱性が高いため、主電動機の温度上昇限度を高くすることができる。 Conventionally, grease has been used for lubrication of bearings for vehicle main motors. However, for the purpose of saving labor in maintenance work by extending the disassembly and maintenance period, research and development of a bearing structure for oil lubrication is underway. Since the bearing needs to be constantly lubricated during the operation of the main motor, the lubricating oil is always supplied to the bearing provided on the rotor shaft. Further, since the lubricating oil has higher heat resistance than grease, the temperature rise limit of the main motor can be increased.

図２は鉄道車両用主電動機の油潤滑を行う軸受構造の一例であり、１は固定子、２は回転子、３は回転子軸、４はファン、５はファン側油掻揚げ円板、６は反ファン側油掻揚げ円板、７及び８は貯油室、９はファン側と反ファン側とを繋げる機外の通油管または貯油室であり、斜線で示す部分は潤滑油である。ファン側貯油室７および反ファン側貯油室８に溜められた潤滑油がファン側掻揚げ円板５および反ファン側掻揚げ円板６により掻揚げられ、この掻揚げられた潤滑油が軸受箱や油掻揚げ円板の側面を伝って軸受に流入することにより潤滑される。   FIG. 2 shows an example of a bearing structure for oil lubrication of a railway vehicle main motor. Reference numeral 1 denotes a stator, 2 denotes a rotor, 3 denotes a rotor shaft, 4 denotes a fan, 5 denotes a fan-side oil hoisting disk, Reference numeral 6 denotes an anti-fan side oil hoisting disk, 7 and 8 are oil storage chambers, 9 is an oil passage pipe or oil storage chamber outside the machine that connects the fan side and the anti-fan side, and the hatched portion is lubricating oil. Lubricating oil stored in the fan-side oil storage chamber 7 and the anti-fan-side oil storage chamber 8 is swept up by the fan-side hoisting disk 5 and the anti-fan-side hoisting disk 6, and the thus-raised lubricating oil is used as a bearing box. And lubricated by flowing into the bearing along the side of the oil-raised disk.

特開２０１１−８７３７６号公報JP 2011-87376 A 特開２０１０−１４１４６号公報JP 2010-14146 A 特開２００１−９０７４０号公報JP 2001-90740 A 特開平１０−１７８７５７号公報Japanese Patent Laid-Open No. 10-178757

上述の通り油潤滑の車両用主電動機においては、主電動機の温度上昇限界を高くするためには有利な構造である。しかし、特に温度上昇がしやすい全閉形主電動機などでは、軸受の冷却を効率的に行い、軸受の温度上昇による損傷を防止することが要求される。但し、図２の状態では掻揚げ円板付近の潤滑油は撹拌されるが、掻揚げ円板から遠ざかる程、撹拌の効果は薄れる。この状態では、ファン側貯油室と反ファン側貯油室とを潤滑油が循環せず、機外の通油管または貯油室において冷却された潤滑油が、効率よく軸受に供給されない。   As described above, an oil-lubricated vehicular main motor has an advantageous structure for increasing the temperature rise limit of the main motor. However, particularly in a fully-enclosed main motor that easily rises in temperature, it is required to efficiently cool the bearing and prevent damage due to the temperature rise of the bearing. However, in the state of FIG. 2, the lubricating oil in the vicinity of the fried disk is agitated, but the effect of agitation decreases as the distance from the fried disk increases. In this state, the lubricating oil does not circulate between the fan-side oil storage chamber and the anti-fan-side oil storage chamber, and the lubricating oil cooled in the oil passage pipe or the oil storage chamber outside the machine is not efficiently supplied to the bearing.

本発明は潤滑油を循環させ、潤滑油の冷却を効率よく行う構造とするものである。   The present invention has a structure in which lubricating oil is circulated to efficiently cool the lubricating oil.

本発明は、回転子軸に設けた軸受に、潤滑油を供給する車両用主電動機において、ファン側の貯油室に配設された第1の油掻揚げ円板と、反ファン側の貯油室に配設された第2の油掻揚げ円板と、前記ファン側貯油室の底部から前記第2の油掻揚げ円板側面下部に近接して出口が設けられた第1の通油管と、前記反ファン側貯油室の底部から前記第1の油掻揚げ円板側面下部に近接して出口が設けられた第2の通油管を有することを特徴とする。   The present invention relates to a vehicular main motor that supplies lubricating oil to a bearing provided on a rotor shaft, and a first oil-raised disk disposed in a fan-side oil storage chamber and an anti-fan-side oil storage chamber A second oil-raised disk disposed in the first oil passage pipe provided with an outlet in the vicinity of the bottom of the side face of the second oil-raised disk from the bottom of the fan-side oil storage chamber; It has a second oil passage pipe provided with an outlet from the bottom of the anti-fan side oil storage chamber in the vicinity of the lower part of the side face of the first oil-raised disk.

更に、上記第1の通油管または上記第2の通油管の途中に貯油室を設けたことを特徴とする。   Furthermore, an oil storage chamber is provided in the middle of the first oil passage pipe or the second oil passage pipe.

本発明の構造は、ファン側と反ファン側とを双方向別々に流れる潤滑油の経路を設けることにより、ファン側と反ファン側とを循環する経路が形成されるため、機外の通油管および貯油室を通過し冷却された潤滑油を、効率よく軸受に供給することができる。よって、軸受の冷却ができるため、軸受の熱による損傷を防止することができる。   In the structure of the present invention, a path for circulating between the fan side and the anti-fan side is formed by providing a path for lubricating oil that flows separately in both directions on the fan side and the anti-fan side. The lubricating oil that has passed through the oil storage chamber and has been cooled can be efficiently supplied to the bearings. Therefore, since the bearing can be cooled, damage to the bearing due to heat can be prevented.

本発明の実施例を示す説明図である。It is explanatory drawing which shows the Example of this invention. 従来の一例を示す説明図である。It is explanatory drawing which shows an example of the past.

図１は、本発明の実施例を示す断面図であって、１は固定子、２は回転子、３は回転子軸、４はファン、５はファン側油掻揚げ円板、６は反ファン側油掻揚げ円板、７はファン側貯油室、８は反ファン側貯油室、１０は反ファン側からファン側へ潤滑油が流れる機外の通油管または貯油室、１１はファン側から反ファン側へ潤滑油が流れる機外の通油管または貯油室、１２はファン側の潤滑油の出口、１３は反ファン側の潤滑油の出口であり、貯油室内の下部に斜線で示す部分は潤滑油である。   FIG. 1 is a cross-sectional view showing an embodiment of the present invention, in which 1 is a stator, 2 is a rotor, 3 is a rotor shaft, 4 is a fan, 5 is a fan-side oil-raised disk, and 6 is a reverse side. Fan side oil hoisting disk, 7 is a fan side oil storage chamber, 8 is an anti-fan side oil storage chamber, 10 is an oil passage pipe or oil storage chamber outside the machine through which lubricating oil flows from the anti-fan side to the fan side, and 11 is from the fan side An oil passage pipe or oil storage chamber outside the machine through which the lubricating oil flows to the non-fan side, 12 is an outlet for the lubricating oil on the fan side, 13 is an outlet for the lubricating oil on the anti-fan side, Lubricating oil.

ファン側ではファン側油掻揚げ円板５が回転することにより、近接しているファン側の潤滑油の出口１２と円板５の間に潤滑油の流れができ、その結果吸引力が発生し、ファン側貯油室７へ潤滑油が吸いだされる。ファン側貯油室７へ潤滑油が吸いだされることにより、反ファン側からファン側へ潤滑油が流れ、機外の通油管または貯油室１０を潤滑油が通過し、外気により冷却される。   On the fan side, the fan-side oil scooping disc 5 rotates, so that the lubricant flows between the adjacent fan-side lubricant outlet 12 and the disc 5, and as a result, a suction force is generated. The lubricating oil is sucked into the fan side oil storage chamber 7. When the lubricating oil is sucked into the fan-side oil storage chamber 7, the lubricating oil flows from the non-fan side to the fan side, passes through the oil passage pipe or the oil storage chamber 10 outside the machine, and is cooled by the outside air.

反ファン側でも同様に、反ファン側油掻揚げ円板６が回転することにより、近接しているファン側の潤滑油の出口１３と円板６の間に潤滑油の流れができ、その結果吸引力が発生し、反ファン側貯油室８へ潤滑油が吸いだされる。反ファン側貯油室８へ潤滑油が吸いだされることにより、ファン側から反ファン側へ潤滑油が流れる機外の通油管または貯油室１１を潤滑油が通過し、外気により冷却される。   Similarly, on the anti-fan side, the anti-fan-side oil lifting disc 6 rotates to allow the lubricating oil to flow between the adjacent fan-side lubricating oil outlet 13 and the disc 6, and as a result. A suction force is generated, and the lubricating oil is sucked into the anti-fan side oil storage chamber 8. When the lubricating oil is sucked into the anti-fan side oil storage chamber 8, the lubricating oil passes through the oil passage pipe or the oil storage chamber 11 outside the machine where the lubricating oil flows from the fan side to the anti-fan side, and is cooled by the outside air.

この２つの通油経路により循環経路が形成され、潤滑油が連続的に冷却される構造となる。通油経路の通油管または貯油室には積極的に冷却するためのフィンを設けてもよい。   A circulation path is formed by these two oil passage paths, and the lubricating oil is continuously cooled. Fins for positive cooling may be provided in the oil passage pipe or the oil storage chamber of the oil passage.

本発明の構造は、長期非分解を目的とする車両用主電動機に利用することができる。
また、特に温度上昇の高い全閉形車両用主電動機などに適用することができる。 The structure of the present invention can be used for a vehicular main motor intended for long-term non-disassembly.
In addition, the present invention can be applied to a fully-enclosed vehicular main motor having a particularly high temperature rise.

１ 固定子
２ 回転子
３ 回転子軸
４ ファン
５ ファン側油掻揚げ円板
６ 反ファン側油掻揚げ円板
７ ファン側貯油室
８ 反ファン側貯油室
９ 機外の通油管または貯油室
１０ 反ファン側からファン側へ潤滑油が流れる機外の通油管または貯油室
１１ ファン側から反ファン側へ潤滑油が流れる機外の通油管または貯油室
１２ ファン側の潤滑油の出口
１３ 反ファン側の潤滑油の出口 1 Stator
2 Rotor
3 Rotor shaft
4 fans
5 Fan side oil rake
6 Anti-fan side oil frying disc
7 Fan side oil storage room
8 Anti-fan side oil storage chamber
9 Oil pipe or oil storage room outside the machine
10 Oil passage or oil storage chamber outside the machine where lubricating oil flows from the non-fan side to the fan side
11 Oil passage or oil storage chamber outside the machine where lubricating oil flows from the fan side to the non-fan side
12 Lubricant outlet on fan side
13 Anti-fan side lubricant outlet

Claims (2)

回転子軸に設けた軸受に、潤滑油を供給する車両用主電動機において、ファン側の貯油室に配設された第1の油掻揚げ円板と、反ファン側の貯油室に配設された第2の油掻揚げ円板と、前記ファン側貯油室の底部から前記第2の油掻揚げ円板側面下部に近接して出口が設けられた第1の通油管と、前記反ファン側貯油室の底部から前記第1の油掻揚げ円板側面下部に近接して出口が設けられた第2の通油管を有する車両用主電動機。   In a vehicular main motor that supplies lubricating oil to a bearing provided on a rotor shaft, a first oil-raised disc disposed in a fan-side oil storage chamber and an anti-fan-side oil storage chamber are disposed. A second oil-raised disc, a first oil passage pipe provided with an outlet from the bottom of the fan-side oil storage chamber to the lower side of the second oil-raised disc, and the anti-fan side A vehicular main electric motor having a second oil passage pipe provided with an outlet in the vicinity of a lower part of a side surface of the first oil lifting disk from the bottom of an oil storage chamber. 上記第1の通油管または上記第2の通油管の途中に貯油室を設けた請求項1記載の車両用主電動機。   2. The vehicle main motor according to claim 1, wherein an oil storage chamber is provided in the middle of the first oil passage pipe or the second oil passage pipe.
JP2012137831A 2012-06-19 2012-06-19 Main electric motor for vehicle Pending JP2014003817A (en)

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JP2012137831A JP2014003817A (en) 2012-06-19 2012-06-19 Main electric motor for vehicle

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JP2012137831A JP2014003817A (en) 2012-06-19 2012-06-19 Main electric motor for vehicle

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394945A (en) * 2017-08-16 2017-11-24 杭州江南电机股份有限公司 One kind defends kitchen ceiling appliance motor special
WO2019100260A1 (en) * 2017-11-22 2019-05-31 贵州智慧能源科技有限公司 High-speed motor oil lubrication structure
CN111533212A (en) * 2020-05-07 2020-08-14 李明皇 Inclined oil remover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107394945A (en) * 2017-08-16 2017-11-24 杭州江南电机股份有限公司 One kind defends kitchen ceiling appliance motor special
WO2019100260A1 (en) * 2017-11-22 2019-05-31 贵州智慧能源科技有限公司 High-speed motor oil lubrication structure
CN111533212A (en) * 2020-05-07 2020-08-14 李明皇 Inclined oil remover

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