Differential device for tractor with hydraulic differential lock

Abstract

A differential with a hydraulic differential lock for a tractor comprises a left differential bearing support, a right differential bearing support, a left differential housing, a right differential housing, a large bevel gear, a long planetary gear shaft, a left half axle gear, a right half axle gear, four planetary gears, needle bearings, needle bearing check rings, a long spacer, short spacers, a differential lock piston, a differential lock pressure disc, a differential lock friction disc, and two planetary gear stepped half shafts, wherein the left and right differential housings are connected with each other; the planetary gears are mounted in the left and right differential housings, and are meshed with the right and left half axle gears respectively; the left half axle gear is connected with splines on the differential lock friction disc; the long planetary gear shaft and the planetary gear stepped half shafts are mounted on the planetary gears; the long planetary gear shaft is connected with the right differential housing; the needle bearings are mounted between the planetary gears, and the long planetary gear shaft and the planetary gear stepped half shafts; the left and right differential housings are connected with the left and right differential bearing supports respectively; the large bevel gear is connected with the right differential housing; and the left and right differential bearing supports are fixed on a transmission case shell behind the tractor.

Description

technical field [0001] The invention belongs to the field of tractors and relates to a tractor differential device with a hydraulic differential lock. Background technique [0002] At present, with the expansion of the market demand for high-power wheeled tractors in my country, especially in Northwest, North China and Northeast China, large, medium and heavy-duty wheeled tractors have already occupied a dominant position in the market. This requires that the transmission system of the tractor has a safer and more reliable performance. However, the differentials used in the drive trains of large, medium and heavy-duty wheeled tractors produced in my country generally adopt a simple closed bevel gear structure, which is generally equipped with four planetary gears, and the connection of the four planetary gears is generally In the form of a shaft sleeve. Due to structural and space constraints, if one of the planetary gear shafts in this form is weak in strength and the stru...

AI Technical Summary

Problems solved by technology

Due to the limitation of structure and space, if one of the planetary gear shafts in this form is weak in strength and has a complicated structure, there may be hidden dangers to the tractor drive train

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