End cover type sliding bearing of high-speed motor

Abstract

The invention discloses an end cover type sliding bearing of a high-speed motor. The end cover type sliding bearing comprises a bearing box, an outer bearing cover, an upper bearing cover, a valve, a bearing bush, an oil inlet pipe, an inner bearing cover and sealing rings, wherein the upper bearing cover and the bearing box form a bisectioned structure; the bearing box is integrated with the lower half of an end cover of the motor; a lower cavity is formed in the sidewall, close to one side of the motor, of the bearing box, and leads to a part below the motor shaft; an upper cavity corresponding to the lower cavity is formed in the sidewall, close to one side of the motor, of the upper bearing cover, and leads to a part above the motor shaft; and after the bearing box and the upper bearing cover are connected, the upper and lower cavities form an airtight cavity which surrounds the motor shaft and is communicated with air. The end cover type sliding bearing of the high-speed motor can prevent oil absorption caused by a negative pressure generated by a fan in the motor around the inner bearing cover of the motor, and effectively prevent oil penetration.

Description

technical field [0001] The invention belongs to the field of motor end cover type sliding bearings, in particular to a seal for a high speed motor end cover type sliding bearing. Background technique [0002] The bearings of large and medium-sized high-speed motors generally use sliding bearings, which are mainly composed of bearing housings, bearing outer covers, bearing upper covers, valves, bearing bushes, oil inlet pipes, bearing inner covers and sealing rings, etc. The motor end cover is fixedly connected to the bearing inner cover and Between the bearing box and the bearing cover, the motor end cover, the bearing inner cover, the bearing box and the bearing cover together form a relatively sealed space. During the use of this type of sliding bearing, due to the action of the internal fan of the motor, Negative pressure is generated in the sealed space, and it often happens that the lubricating oil in the bearing box is sucked into the inside of the motor, causing too m...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-speed motor end cover type sliding bearing with compact structure, which can solve the oil leakage problem of the high-speed motor sliding bearing

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