Balance valve for preventing traction motor from leaking oil, bearing cap provided with balance valve and traction motor

Abstract

The invention discloses a balance valve for preventing a traction motor from leaking oil, a bearing cap provided with the balance valve and the traction motor comprising the bearing cap. The balance valve comprises a valve body 1 and a valve element 2; a wall 3 is arranged in the valve body 1 or on the end part of the valve body 1, and is provided with a valve hole 4; the valve element is spherical and is positioned in the valve body 1; the valve element 2 is in contact with the valve hole 4. The valve element of the balance valve unidirectionally acts, negative pressure generated by running a locomotive is prevented from extracting air through an oil leakage hole of the traction motor, and negative pressure formed in a motor bearing chamber is avoided. The valve element of the balance valve automatically opens the hole of the valve body under the buoyancy, so that oil in the motor bearing chamber is discharged and is prevented from polluting the interior of a motor. Moreover, the balance valve is simple in structure, easy to install and maintain and low in cost.

Description

technical field [0001] The invention belongs to the field of machinery manufacturing, in particular to a component of a locomotive traction motor. Background technique [0002] At present, after the traction motors of locomotives are newly built, overhauled and installed, when the locomotives are in trial operation and normal operation, the lubricating oil or grease from the gearbox of the locomotive often leaks from the gearbox to the bearing cover of the traction motor. The leakage port leaks faults, and sometimes even a large amount of lubricant oil or grease leaks out of the gearbox, resulting in a lack of oil in the gearbox and aggravated gear wear. If the lubricating oil or grease of the gearbox is not replenished in time, the teeth of the running gear of the locomotive will be peeled off, broken, or even the gears will be loose and cracked. For example, if the gear is short of oil, there will be dry friction of the gear, which will generate a lot of heat, expand the ...

AI Technical Summary

Problems solved by technology

And it flows out through the leakage port of the gearbox, polluting the traction motor casing and the outside of the gearbox, and at the same time, the oil from the gearbox oil flows between the two tracks, polluting the environment

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