Hydraulic transmission axle gearbox

Abstract

The invention discloses a hydraulic transmission axle gearbox for a railway vehicle. The hydraulic transmission axle gearbox comprises a box body assembly, an input shaft assembly, a middle shaft assembly, an output shaft assembly and a ventilator, wherein the gear outer diameter of an input gear shaft of the input shaft assembly is less than the diameter of a hole of each input shaft integrated bearing seat; corresponding first oil collection grooves are arranged in the input shaft integrated bearing seats and middle shaft bearing seats, second oil collection grooves are arranged in an upper box body, third oil collection grooves are arranged in a lower box body, corresponding oil storage bins are arranged on the input shaft integrated bearing seats, the middle shaft bearing seats and output shaft bearing seats, and an oil guide plate is arranged on an observation window of the upper box body; each oil collection groove is communicated with the corresponding bearing, and a side-retaining height of each oil storage bin is at least greater than 1/3-1/2 of the height of a roller at the lowest part of the corresponding bearing; and a sealing structure is arranged at an input end rotary penetrating part of the input shaft assembly, an output end rotary penetrating part of the middle shaft assembly, and a rotary penetrating part of the output shaft assembly respectively. The hydraulic transmission axle gearbox disclosed by the invention is compact in structure, reasonable in layout, and reliable in lubrication.

Description

technical field [0001] The invention relates to a rail vehicle power transmission device, in particular to a rail vehicle high-speed driving axle gear box with mixed low-speed operating conditions and high-speed running conditions. Background technique [0002] Subway maintenance operation vehicle——subway milling and grinding vehicle is a professional vehicle specially designed for subway rail shaping operations, meeting the boundary requirements of subways. Regular milling and grinding of rails with rail milling and grinding vehicles can not only eliminate the rail waveform wear, but also remove the contact fatigue layer on the rail surface, prevent the rail head from peeling off, effectively prolong the service life of the rails, reduce wheel and rail noise, and improve the quality of the train. Running smoothness and passenger ride comfort. [0003] With the rapid development of my country's economy and the acceleration of urbanization process, my country's subway constr...

AI Technical Summary

Problems solved by technology

[0005] The existing high-speed traction hydraulic transmission axle gearbox products mainly have the following deficiencies during use: in order to ensure the lubrication of the high-speed gearbox bearings when the vehicle is operating at a low and constant speed, a forced lubrication system is usually installed or a large amount of gear oil is added. Cause the problem of complex structure of gearbox or poor thermal balance performance

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