Efficient lubricating and cooling structure for axle gear box

Abstract

The invention relates to an efficient lubricating and cooling structure for an axle gear box. The axle gear box comprises an intermediate shaft with a cylindrical gear at one end and a bevel gear at the other end, the cylindrical gear and a cylindrical gear on an input shaft parallel with the intermediate shaft are perpendicular to the axis of the intermediate shaft and the axis of the input shaft respectively and mesh with each other, and the bevel gear meshes with a bevel gear on an output shaft perpendicular to the intermediate shaft; an oil collection structure of an inverted T shape is designed at the topmost part, close to the cylindrical gear, of a box body; bearings are provided with oil inlets and oil outlets; a lubrication separation plate is arranged at the circulation overlapping position of the cylindrical gear and the bevel gear. According to the efficient lubricating and cooling structure, the basic structure according with the fluid mechanics, the reasonable lubrication oil collection and oil way arrangement and the external shape promoting heat exchange and dissipation are adopted, the structural manufacturability is considered, and therefore efficient lubricating and cooling of the axle gear box within the wide transmission ratio range can be realized, the comprehensive performance of the axle gear box can be improved, and the reliability and the economical efficiency can be improved.

Description

technical field [0001] The invention relates to an axle gear box structure, in particular to an efficient lubricating and cooling structure for an axle gear box. Background technique [0002] The axle gearbox is located on the axle between the two wheel pairs of the rail car and is the last assembly of the rail car transmission system. The axle gearbox changes the transmitted power by 90°, amplifies the input torque, reduces the speed, and drives the wheelset to make the rail car run. For axle gearboxes with primary and secondary transmission, its working characteristics are not only to meet the needs of efficient power transmission at a high speed of 160 km / h, but also to meet the needs of stable operation at low speeds below 5 km / h. Since the transmission ratio of the gearbox needs to be more than 30, if the system is lubricated and cooled by pressure lubrication, it will be difficult to select a lubricating oil pump suitable for this speed range. Solve the contradiction...

AI Technical Summary

Problems solved by technology

When the axle gearbox starts to run, the first tapered roller bearing 3 and the second tapered roller bearing 4 do not have enough lubricating oil for effective and reliable lubricating oil, and the first tapered roller bearing 3 and the second tapered roller bearing 4 It is very easy to burn out, causing the locomotive to stop running and affecting railway traffic

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