【摘要】 针对丘陵山地拖拉机田间地头转向困难及已作业地块易被压紧压实的难题，设计了一种自适应式丘陵山地拖拉机底盘。采用机械传动方式，发动机横向布置于车架上，动力由发动机一端经过胶带输送到变速器等传动部件用于底盘驱动行驶，另一端输出用于田间收割等作业。转向系统为断开式梯形结构设计，采用前轮转向和四轮转向两种转向方式，可实现全液压四轮异相位转向。结果表明，底盘最高及最低行驶速度分别为10.98和0.91 km/h，最大传动比为370.37，最小传动比为61.38，底盘前轮转向时的最小转弯半径为2 003 mm，四轮转向时的最小转弯半径为1 494 mm。该丘陵山地拖拉机具有良好的小地块作业适应能力。更多还原

【Abstract】 Aiming at problems of difficult field head steering and easy compaction of working block of hilly and mountain tractor,an adaptive chassis of hilly tractor was designed.The engine was horizontally arranged on the frame.The power was transmitted from one end of engine through belt to transmission parts for chassis driving, and the other end was output for field harvesting and other operations.The steering system was designed with broken trapezoidal structure and adopted two steering modes:front wheel deflection and four-wheel deflection,which could realize all-hydraulic four-wheel out of phase steering.Results showed that the maximum and minimum driving speed of chassis were 10.98 and 0.91 km/h, respectively. The maximum and minimum transmission ratio of the chassis were 370.37 and 61.38,respectively.The minimum turning radius of front wheel deflection of the chassis was 2 003 mm and the minimum turning radius of four-wheel deflection was 1 494 mm. The hilly mountain tractor has good adaptability to small plot operation.更多还原