Sealing structure for axle gearbox of multi-functional vehicle

Abstract

The invention discloses a sealing structure for an axle gearbox of a multi-functional vehicle. The sealing structure comprises an axle sealing device; the axle sealing device is arranged in an axle hole in the sidewall of the axle gearbox and is used for supporting a bevel gear shaft; the axle sealing device comprises a bearing retainer cup, a four-point contact ball bearing, a cylindrical roller bearing and a bearing end cover, wherein the bearing retainer cup is arranged inside the axle hole; the four-point contact ball bearing and the cylindrical roller bearing are arranged inside the bearing retainer cup; the bearing end cover is fixed to the sidewall of the axle gearbox and is used for axial location; and an adjusting ring is arranged between the bearing end cover and the four-point contact ball bearing. The sealing structure disclosed by the invention has the advantages that the sealing structure is provided with first, second and third radial oil feed holes and first and second oil collecting grooves so as to fully satisfy the lubricating oil amount of the bearing, can realize double-surface sealing of a rotating through position of the multi-functional vehicle under a high-speed running and low-speed running double-mode working condition, and is simple in structure, convenient to mount, dismount and maintain and reliable in sealing effect.

Description

technical field [0001] The invention relates to a multifunctional vehicle for overhauling, maintaining and repairing catenaries of electrified railways and high-speed passenger dedicated lines, in particular to a sealing structure for the axle gear box of the multifunctional vehicle. Background technique [0002] The multifunctional vehicle is an operating vehicle for the inspection, maintenance and emergency repair of the catenary of electrified railways and high-speed passenger dedicated lines. Multi-purpose vehicles require a dual-mode traction system for high-speed operation and low-speed operation, especially the axle gearbox in the traction system. At present, there is no mature product, technology and manufacturing experience in China. Functional car axle gearbox. In order to improve the service life of the gearbox, the transmission reliability, the convenience of overhaul, disassembly and maintenance, and to meet the dual-mode working conditions of high-speed operat...

AI Technical Summary

Problems solved by technology

This is because: 1. Oil is generally used to lubricate the rotating parts of the gear box of the multi-purpose vehicle axle. Once the lubricating oil of the gear box leaks, it will affect the service life of important parts such as gears and bearings in the box, and may also cause damage along the track. environmental pollution

2. The multi-purpose vehicle axle gearbox is installed on the bogie at the lower part of the multi-purpose vehicle. When the vehicle is running, due to the uneven distribution of the internal and external pressure of the gearbox, when the external pressure of the gearbox is greater than the internal pressure of the gearbox, it will cause Air, rain, snow, dust and other sundries in the external environment invade the gearbox and contaminate the lubricating oil, resulting in frequent emulsification of the lubricating oil, which intensifies the wear of important parts such as bearings and gears in the gearbox

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