Bearing protection structure and wind power gearbox

Abstract

The invention belongs to the technical field of gearboxes, and discloses a bearing protection structure and a wind power gearbox. The bearing protection structure comprises a first oil return structure, a second oil return structure and an oil deflector ring, wherein the first oil return structure is used for injecting lubricating oil to a spline transmission structure and communicating with an oil tank; the second oil return structure is used for injecting lubricating oil to a spline shaft bearing and communicating with the oil tank; and the oil deflector ring is arranged between the first oil return structure and the second oil return structure, and can isolate the first oil return structure and the second oil return structure from each other. The first oil return structure is arranged,the spline transmission structure can be lubricated and cooled, and solid particles and heat generated by abrasion can be taken away, so that the solid particles are prevented from causing continuousdamage to the spline surface. The first oil return structure and the second oil return structure are isolated from each other through the oil deflector ring, the situation that the spline shaft bearing is damaged or even fails due to the fact that the lubricating oil with the solid particles flows into the spline shaft bearing is avoided, replacement and maintenance costs are reduced, and the service life of the spline shaft bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of gearboxes, in particular to a bearing protection structure and a wind power gearbox. Background technique [0002] The gearbox for wind power generation is often composed of a multi-stage planetary gear train, a spline shaft gear train, an output shaft gear train and a box. The sun gear in the planetary gear train transmits the torque and speed to the spline through the spline. The gear train of the key shaft and the gear train of the spline shaft are transmitted to the gear train of the output shaft through the meshing of the gears to change the speed and change the torque, so far the process of speed change is completed. [0003] Generally speaking, the spline transmission can ensure that the sun gear on the planetary gear train and the spline shaft gear train are relatively stationary, but microscopically speaking, there is acceleration and deceleration because the sun gear does not rotate at a constan...

AI Technical Summary

Problems solved by technology

[0004] The solid particles taken away by the lubricating oil will pass through the bearings in the spline shaft wheel train. Since the bearings are high-precision rotating support components, larger and harder solid particles will cause micropitting and surface peeling of the bearing raceways and rollers , eventually leading to bearing failure

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