Rail transit gearbox

Abstract

The invention relates to a rail transit gearbox, the box body of which comprises an upper box body and a lower box body, the lower box body is provided with a boom mounting seat, shaft axes of an input gear shaft, an intermediate gear shaft and a main shaft are parallel to each other, and a joint face between the upper box body and the lower box body passes through axes of the intermediate gear shaft and the main shaft and is parallel to the top of the upper box body. The input gear shaft is installed on the upper box body, an external shaft neck of the input gear shaft and both ends of the main shaft extend out of the box body, and the upper surface of the boom mounting seat in the lower box body and the joint face between the upper box body and the lower box body are on the same plane. The input gear shaft engages with a big intermediate gear and the intermediate gear shaft engages with a big output gear. The taper of the external shaft neck of the input gear shaft is 1:50. Assembly area of the external shaft neck of the input gear shaft is provided with a ring groove, the mounting shaft diameter of the intermediate gear shaft and the central mounting hole of the big output gear are provided with a ring groove, and the external shaft neck of the input gear shaft, the intermediate gear shaft and the big output gear are all provided with a high-pressure oil passage.

Description

technical field [0001] The invention relates to a gear box, in particular to a gear box used for rail transportation. Background technique [0002] Rail transportation is a kind of land transportation. In practical application, rail transportation has the characteristics of fast speed, large carrying capacity and high efficiency. Compared with other forms of land transportation, it has obvious advantages and has become the current urban transportation, urban It is a means of transportation that gives priority to the development of international transportation. In rail vehicles, gearboxes are indispensable key components in rail vehicles. The high speed and heavy load of rail transportation have great impact on the reliability, availability, maintainability and safety of gearboxes. Both are very demanding. At present, the traditional gearbox used for rail transit has not changed in terms of its principle. However, due to the unreasonable distribution of its designed structur...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to: for the traditional gear box used for rail transit, the box body processing is complicated due to the unreasonable distribution of the designed structure, or the defect of the lubrication method, and it is inconvenient to fill the oil when adding lubricating oil. Unbalanced lubrication of supporting bearings, and a series of problems such as high noise during operation of the assembled gearbox, high temperature of the gearbox, oil leakage, difficult maintenance, short service life, etc., to provide a new gear for rail transit box

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