Automatic differential mechanism of change gear case for tractor

Abstract

The invention discloses an automatic differential mechanism of a change gear case for a tractor, comprising a disc gear and two half axle gears, wherein the disc gear is arranged at the middle part of a differential mechanism shaft, the half axle gear comprises a sun tooth part and a straight tooth part and is arranged at each of the two sides of the disc gear, the disc gear is internally provided with a planetary gear which is meshed with the sun tooth part of the half axle gear, and the sun tooth part and the straight tooth part which form the half axle gear are integrally molded to have an integral structure. The automatic differential mechanism has the function of speed reducing as well as the effect of energy conservation, and can raise the position of a box body of a speed changer by a matched driving gear, thereby substantially improving the passing performance of a tractor; and the automatic differential mechanism is flexible in steering and has long service life.

Description

technical field [0001] The invention relates to the technical field of a tractor gearbox, in particular to an automatic differential of a tractor gearbox. Background technique [0002] The differential used for steering in the traditional tractor gearbox is generally manually operated, that is, the manual control separates the two axle teeth that drive the wheels on both sides to rotate and mesh together, so as to realize the steering operation. Manually operated differentials are not easy to use. Now there are also automatic differentials on automobiles directly applied to the steering wheel tractor gearbox. The outer side of the gear is composed of a tapered bearing. The half shaft gear is composed of a sun gear and a straight gear tightly sleeved on the extension shaft of the sun gear. A planetary gear is installed inside the disc gear. The planetary gear meshes with the sun gear. The gear is connected to the transmission shaft through the next stage of gear to drive th...

AI Technical Summary

Problems solved by technology

Because the spur gear and the sun gear are socketed in this kind of differential, the two are independent and split structures, resulting in a large outer diameter of the spur gear, which cannot play a role in deceleration, and takes up a lot of space. Make the chassis lower and affect the use effect

If the diameter of the spur gear is reduced in order to achieve the deceleration function, its rigidity and strength will not meet the requirements, and it will be easily damaged, with high failure rate and poor stability.

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