Novel gearbox

Abstract

The invention discloses a novel gear box. In order to solve the problem of oil leakage and the complex adjustment process of the bearing axial clearance in the existing gear box; the gear box includes a driven gear, a box body, an outer end cover and a bearing retaining ring; It is composed of the lower box body, and the upper box body and the lower box body have corresponding oil passages; there is an outer oil chamber between the bearing retaining ring and the outer end cover, and an inner oil chamber between the bearing retaining ring and the bearing. Cavity; between the box, the bearing retaining ring and the two outer end caps, there are bearing bushes; the bearing bushes are provided with bushings that communicate with the corresponding oil passages on the upper box and the lower box. Sleeve oil passage; the bush oil passage communicates with the inner oil chamber or the outer oil chamber. The invention improves the service life and lubricating quality of the driven gear bearing, reduces the complexity of the process, and improves the assembly efficiency of the gearbox.

Description

technical field [0001] The invention relates to the field of gearbox lubrication design, in particular to a gearbox. Background technique [0002] The existing gearbox lubrication for intercity EMUs adopts the splash lubrication method, that is, the lubricating oil stored at the bottom of the gearbox is brought to the pinion and the inner wall of the gearbox through the rotation of the driven gear, and then through the specially set oil circuit to the inner wall of the gearbox. Bearings are lubricated. [0003] Such as figure 1 As shown, the inner ring of the driven gear bearing is directly installed on the axle through interference fit, and the outer ring is directly matched with the gear box, that is, the bearing seat is arranged on the gear box. Since the gear box is composed of the upper box and the lower box The body is composed of two parts. The sub-box surface passes through the driven gear bearing seat. The machining error and assembly error of the gearbox, as well...

AI Technical Summary

Problems solved by technology

[0004] In view of the situation that the driven gear bearing seat of the gearbox for intercity EMU is directly arranged on the box body and passes through the upper and lower box sub-surfaces, as well as the oil leakage phenomenon of the gearbox and the complicated process of adjusting the axial clearance of the bearing Problem, the present invention aims to provide a gear box that can avoid the above-mentioned problems, thereby improving the life and lubrication quality of the driven gear bearing, reducing the complexity of the process, and improving the assembly efficiency of the gear box

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