Lubricating structure of pure electric axle transmission system

Abstract

The invention discloses a lubricating structure of a pure electric axle transmission system. The lubricating structure comprises an oil pump, a transmission shell, a first oil collecting ring and a second oil collecting ring, wherein the first oil collecting ring and the second oil collecting ring are fixedly arranged in an inner cavity of the transmission shell; an input shaft and an output shaft are respectively sleeved with the first oil collecting ring and the second oil collecting ring; a plurality of first radial through holes are formed in the first oil collecting ring and penetrate to the surface of the input shaft; a plurality of second radial through holes are formed in the second oil collecting ring and penetrate to the surface of the output shaft; a lubricating oil channel is formed in the speed change shell; an outlet of the lubricating oil channel communicates with the first radial through holes and the second radial through holes; an inlet of the lubricating oil channel communicates with an oil outlet of the oil pump; and an oil inlet of the oil pump is in butt joint with lubricating oil in the inner cavity of the transmission shell. According to the lubricating structure of the pure electric axle transmission system, the lubricating oil channel is directly cast on the transmission shell, the occupied space is small, the cost is low, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of transmissions, in particular to a lubricating structure for a pure electric bridge transmission system. Background technique [0002] When the new energy electric drive system is working, it requires high speed, low noise and good reliability. One of its design difficulties lies in the lubrication of the gear / bearing / shift synchronization system of the transmission system. Especially when the position of the shafting relative to the oil surface is high, the reliability of the lubrication system directly affects the service life of the transmission. At this time, the traditional splash lubrication has been difficult to meet the reliability requirements of gears and bearings at high speeds. If a mechanical pump is used, it will not be able to lubricate the various parts of the transmission under working conditions such as reversing and trailering, and the most important thing is In the prior art, the oil ...

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Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides a lubricating structure for a pure electric axle transmission system, which solves the problem that there are too many lubricating oil pipes arranged on the current transmission, The structure of the transmission is complicated, the number of parts increases, the cost increases, and the reliability decreases

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