An off-road tractor

Abstract

The invention provides a cross-country tractor. The cross-country tractor comprises a front frame, a rear frame, a front axle, a rear axle, front wheels, rear wheels, a traction apparatus, an engine, a speed changing box, a transfer case and a hydraulic steering device, wherein the traction apparatus comprises a traction box, a traction shaft, a traction shaft fixing box, a first traction main pin, a second traction main pin, a wearproof flat gasket, a locking plate and a traction shaft fixing nut; a connector I and a connector II are arranged at the rear end of the traction box; the traction shaft is mounted in the traction shaft fixing box; an upper connecting lug, a lower connecting lug, a left connecting lug and a right connecting lug are arranged at the front end of the traction shaft; the upper connecting lug is connected with the connector I through the first traction main pin; the lower connecting lug is connected with the connector II through the second traction main pin; the first traction main pin and the second traction main pin both are locked by the locking plate; the left connecting lug is connected with the straight pull rod of the hydraulic steering device; the right connecting lug is connected with the steering cylinder of the hydraulic steering device; a drive shaft is mounted in the traction box and the traction shaft. The cross-country tractor is high in carrying capacity, good in stability and high in safety.

Description

technical field [0001] The invention relates to a tractor, in particular to an off-road tractor. Background technique [0002] The existing farmland operating machines are mainly disc tractors, and long-term use shows that they have the following defects: (1) The front axle is integrated with the gearbox, and the casing of the gearbox is easy to crack and leak oil, and the driving comfort is not good; ( 2) It adopts two-wheel drive and has low horsepower, which cannot be well adapted to road conditions such as muddy roads and steep slopes, especially in remote rural areas with poor road passability, and the loading capacity is relatively limited; (3) The speed of the front axle and the rear axle The ratio is different, the specifications and models of the front wheel and the rear wheel are different, the phenomenon of tire wear is relatively serious, and the service life of the tire is short; (4) The steering device is mechanically executed and the steering is heavy, and the...

AI Technical Summary

Problems solved by technology

[0002] Existing farmland operating machines are mainly disc tractors, which have the following defects after long-term use: (1) The front axle is integrated with the gearbox, the gearbox shell is easy to crack, easy to leak oil, and the driving comfort is not good; ( 2) It adopts two-wheel drive and has low horsepower, so it cannot be well adapted to road conditions such as muddy roads and steep slopes, especially in remote rural areas with poor road passability, and the loading capacity is relatively limited; (3) The speed of the front axle and the rear axle The ratio is different, the specifications and models of the front wheel and the rear wheel are different, the phenomenon of tire wear is relatively serious, and the service life of the tire is short; (4) The steering device is mechanically executed, and the steering is heavy, and the manufacturing and maintenance costs are high

[0003] CN103231650A disclosed a multipurpose farmland work machine on August 07, 2013. This work machine basically solved a series of problems existing in existing disc tractors, but there were still the following deficiencies: traction kingpin deformation, kingpin wear and traction The wear and tear of the box; the space layout is not reasonable enough, the bearing capacity is limited, and the stability needs to be improved; secondly, in the state of power off, it is impossible to turn the direction, and it is difficult to realize the steering, which has certain safety hazards for loading trucks

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