Tractor transfer case

Abstract

The invention discloses a tractor transfer case. An input shaft, an intermediate shaft and an output shaft are sequentially installed in a case body from top to bottom and distributed in parallel. An input shaft gear and a spacer bush II are installed on the input shaft side by side, duplicate gears are installed on the intermediate shaft and composed of a high-speed gear and a low-speed gear, and an output shaft gear and a spacer bush III are installed on the output shaft side by side. The input shaft gear is meshed with the low-speed gear of the duplicate gears, the output shaft gear is meshed with the high-speed gear of the duplicate gears, the two ends, extending out of the two ends of the case body, of the output shaft are respectively connected with a universal coupler through a spline, the input shaft is connected with an output shaft of a gearbox through a spline, the case body and the gearbox are fixedly connected in parallel through a support (28), and the support is installed on a rear frame of a tractor. The tractor transfer case is simple in structure, reliable in work and large in transmission speed ratio, achieves low-speed large-torque output, and improves transmission efficiency of the tractor, and simultaneous drive of front wheels and rear wheels, the consistent synchronous rate and the stable speed output of the tractor are achieved.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, in particular to a transfer case of a tractor. Background technique [0002] The tractor transfer case currently appearing in China generally has a small transmission speed ratio, small torque, and only a two-axis transmission power device, which makes the tractor's climbing performance poor and cannot make full use of the transmission efficiency of the transfer case, so that the synchronous rate of the front and rear drive wheels of the tractor It is not quite consistent, and the power output port of the extended transfer case cannot be increased according to the needs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a new tractor transfer case, which can realize large transmission speed ratio, low-speed high-torque output, improve tractor transmission efficiency, and realize simultaneous driving of the front and rear wheels of ...

AI Technical Summary

Problems solved by technology

[0002] The tractor transfer cases currently appearing in China generally have a small transmission speed ratio, small torque, and only a two-axis transmission power device, which makes the tractor's climbing performance poor, and cannot make full use of the transmission efficiency of the transfer case, so that the synchronous rate of the front and rear drive wheels of the tractor It is not consistent, and the power output port of the extended transfer case cannot be increased according to the needs

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