High-rotating-speed pulling motor

Abstract

The present invention specifically relates to a high-rotating-speed pulling motor. The invention settles a problem that defects and deficiencies exist in the illogical structure of prior motor. The end cap of high-rotating-speed pulling motor is installed with a cylinder jacket protruding frontwards. A rotor shaft is placed I the cylinder jacket. A bearing is sleeved with a bearing inner cap. The front end surface of bearing is pressed with a bearing outer cover. The back side of bearing is installed with a pinion which is composed of a transmission teeth part and a shaft sleeve part. The cylinder jacket is provided with a transmission opening. The top of cylinder jacket is provided with an oil inlet through hole. The lower part of back end plane of bearing outer cover is provided with a groove. The bearing inner cover is provided with an oil hole which is communicated with the groove and the oil inlet through hole. The shaft sleeve part of pinion is fixed with an oil slinger. The back side of oil singer is provided with a back sealing ring. The back sealing ring is fixed with a protective cover and is provided with a plurality of radial annular sealing grooves. The lower part of annular sealing grooves is provided with an oil leakage channel. The base part of cylinder jacket is provided with a main oil return hole and an auxiliary oil return hole. The high-rotating-speed pulling motor of the invention not only realizes the oil lubrication of bearing, but also overcomes the problem of oil leakage. Simultaneously the service lifetime of bearing is guaranteed.

Description

technical field [0001] The invention relates to a motor, in particular to a lubricating and sealing structure for a bearing at the drive end of the motor, in particular to a high-speed traction motor. Background technique [0002] The traditional lubrication system of traction motors uses grease lubrication for the bearings. A gearbox is installed at the drive end of the motor, and the pinion gear 13 at the drive end of the motor meshes with the large gear of the locomotive in the gearbox and is lubricated with oil. This structure has certain defects in operation: 1. Structural limitations may lead to "oil leakage" phenomenon Occurs, causing motor failure: limited by the structure of the motor, there must be a certain gap between the outer bearing cover 17 and the outer seal ring 18 fixed to the shaft, and the motor cannot be completely sealed with the gearbox. When the motor rotor rotates, a negative pressure will be formed between the end of the motor rotor and the bearin...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a high-speed traction motor in order to solve the defects and problems existing in the existing motor transmission end, which is prone to "running oil" and affects the lubrication effect, and the transmission end bearing is easily damaged and adopts grease lubrication.

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