Axle gear box shifting retaining mechanism

Abstract

The invention provides a vehicle axle gear box shift locking device with high reliability and long service life, wherein the invention comprises a dial cylinder, a fork connected with a fork rod, a spline axle inside the inner hole of a mesh muffle, the surface of the dial rod is disposed with a suspending groove and an idle groove, the hole at the top of gear box contains a spring and a steel ball to form a dial rod locking, the end of the mesh muffle is disposed with a suspending face or a suspending groove, the inner hole wall of the mesh muffle is disposed with an idle groove, the spline axle is arranged with two symmetry insulated blind holes, while each blind hole contains one steel ball and a spring to fomr a mesh muffle locking, one end of the dial cylinder is diposed with two dial cylinder approach switches, blocks connected with the dial cylinders, and a locking cylinder with internal sensor to form a block locking. The invention can be used in track hydraulic driving vehicle axle gear box.

Description

technical field [0001] The invention relates to a shifting and locking mechanism of an axle gearbox, in particular to a shifting and locking mechanism for a rail-type hydraulically driven axle gearbox. Background technique [0002] The rail-type hydraulic drive axle gearbox vehicle, in addition to self-propelled, also needs to meet the special needs of coupled operation. When self-propelled, gear shifting is realized through the gear-changing control mechanism, and the hydraulic motor inputs power, which is transmitted to the driving gear and the vehicle is self-propelled. When connected with the train, the gearbox must be in the neutral position to disengage the hydraulic motor itself from the gear transmission system, so as to prevent the wheelset from driving the driven gear, and then the reverse movement of the driven gear to drive the driving gear to damage the hydraulic motor. . In order to prevent shifting of the gear position and the neutral position, there must be...

AI Technical Summary

Problems solved by technology

[0005] (1) There is only one lock in gear and neutral position, and the limit reliability is not high

When shifting gears, only rely on the outer spline of the thin-walled meshing sleeve to make inverted bevel teeth to lock the shifting position once. The two steel balls in the through hole inside the gear shaft form a double lock. If the spring breaks, the two steel balls will not work, and the limit reliability is not high.

Especially when the vibration of the vehicle is large, the steel ball and the groove wear a lot, or the spring compression preload is not enough, it is very easy to cause the phenomenon of gear disengagement, thus damaging the meshing sleeve or gear

[0006] (2) The thin-walled meshing sleeve has internal and external splines, which is difficult to manufacture

[0007] (3) The toggle cylinder is arranged vertically with the fork rod. In addition to the thrust and pressure generated by the cylinder, the fork rod may also generate additional bending moments, and the design of the mechanism is unreasonable.

[0008] (4) The movement displacement of the cylinder and the movement displacement of the fork rod are not equal, and it is inconvenient to adjust accurately

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