A motor end cover and a motor

Abstract

The invention discloses a motor end cap and a motor provided with the motor end cap. The motor end cap comprises an end cap body, a sand prevention box and a plurality of sand blocking beams, wherein air pressure balancing passageways used for balancing inside air pressure and outside air pressure of the motor are arranged on the end cap body, and a passageway inlet and a passageway outlet of each air pressure balancing passageway are located on the outer side and the inner side of the end cap body respectively; the sand prevention box is arranged on the outer side of the end cap body , an air inlet and an air outlet are formed in the sand prevention box, and the air outlet is communicated with the passageway inlets; the sand blocking beams are arranged inside the sand prevention box and form a curved air path used for changing the flowing direction of flowing air. When the motor operates, air flows in the curved air path formed by the plurality of sand prevention beams and repeatedly impacts the sand blocking beams, so that sand dust in the air can be effectively blocked and prevented from entering the motor, the better sand prevention effect is realized, and the motor bearing lubrication environment is effectively improved.

Description

Technical field [0001] The invention relates to the field of motor equipment, in particular to a motor end cover and a motor provided with the motor end cover. Background technique [0002] With the continuous development of traction motor technology, the load capacity per unit volume of the motor is required to increase, the motor speed requirement is getting higher and higher, and the operating temperature range is getting wider. In order to obtain greater power and higher speed, modern locomotives generally use AC traction motors. In order to meet the high speed requirements of AC traction motors, the larger transmission end bearings generally adopt oil lubrication structure. Through the rotation of the drive system gears, the lubricating oil is splashed into the oil collecting box of the traction motor, and then flows into the bearing chamber for lubrication. Finally, it flows back to the gearbox through the inner oil seal and the oil return hole of the end cover. [0003] Wh...

AI Technical Summary

Problems solved by technology

In order to balance the negative pressure and prevent the motor from leaking oil, the motor needs to set up an air pressure balance channel on the end cover, which is connected to the oil return chamber of the inner oil seal, but at the same time, foreign sand, dust and other impurities may also invade the motor through the air pressure balance channel Circulating oil circuit system pollutes the oil lubrication environment, causing abnormal wear of the motor bearings, and even causing the motor to freeze

At present, various types of domestic locomotives have the above-mentioned problems to varying degrees, and no effective protective measures have been found

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