Railway locomotive load-bearing gearbox

Abstract

The invention provides a locomotive-mounted type gearbox which comprises a box body. An input shaft hole and an output shaft hole are formed in the box body. The box body is formed by detachably connecting a lower box main body, a first upper box main body and a second upper box main body. The first upper box main body and the second upper box main body are connected through a longitudinal combining face. The first upper box main body is connected with the lower box main body through a first transverse combining face. The second upper box main body is connected with the lower box main body through a second transverse combining face. The longitudinal combining face, the first transverse combining face and the second transverse combining face are all set in the radial direction of the output shaft hole. The input shaft hole is located in the first upper box main body. A flange is fixed to the first upper box main body and fixedly connected with a motor. When a driven gear is integral or separated, assembling is convenient and rapid; a driving gear and the driven gear can be conveniently disengaged; the whole box body can bear the meshing force of the driving gear and the driven gear and various loads from the traction motor due to the flange.

Description

technical field [0001] The invention relates to gear box technology, in particular to a load-bearing gear box for railway locomotives. Background technique [0002] The gearbox is one of the key components of the locomotive drive system. The structure, mechanical properties and reliability will directly affect the drive system and even the entire locomotive. The gearbox basically adopts the structure through which the drive shaft and the box body pass through. There are mainly the following two types: [0003] Existing technology one [0004] Horizontal case-divided gearbox, non-load-bearing, structurally divided into an upper case and a lower case along the horizontal case-divided surface. The driving end sits on the outer surface of the end cover of the traction motor, the non-driving end sits on the outer surface of the shaft holding box, and the upper box and the lower box are connected by bolts. The gearbox with this structure has the following defects: first, the non...

AI Technical Summary

Problems solved by technology

The gearbox with this structure has the following defects: first, the non-load-bearing gearbox cannot meet the load requirements of the locomotive drive system; second, when the drive end bearing fails, the driving and driven gears cannot be disengaged; third, Due to the limited space of the locomotive, the upper box cannot be taken out after the bolts connecting the upper box and the lower box are removed. The only feasible and effective way is to cut off the gear box to realize the separation of the main and driven gears.

[0006] The vertical box-type gearbox is load-bearing, and is structurally divided into a left box and a right box along the vertical box surface. The gearbox with this structure has the following defects: first, the traction gear cannot be assembled if it is an integral gear; , although the traction gear can be assembled when it is separated, the process is cumbersome, the assembly time is long, time-consuming, laborious and requires special tooling to assemble; third, when the driving end bearing fails, the driving and driven gears cannot be disassembled Fourth, if the gearbox closing bolts are loosened in this scheme, the traction motor and the motor-side gearbox will tilt due to insufficient support points, which poses a safety hazard; fifth, if the gearbox closing bolts are loosened, the gearbox on the non-motor side It will spin and cannot be fixed, which also poses a safety hazard

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