履带式稻（麦）联合收割机液压—机械式行走系统的方案设计

he paddy planting area was about one third of grain planting area in China. The harvesting labor time were accounts for about 24 percent of whole rice producing labor time. Applying the machine to harvest the rice is the most important process to realize the rice mechanization and the rice harvesting mechanization, so to design the advanced combine is very necessary and urgent in China. The hydraulic driving system has been adopted in caterpillar combine because of its simple design, easy to control and flexible steering. This paper, on the basic of analyses the tradition driving system, designs a hydraulic driving systems. And analyzing and research the working processes and working characteristic of semi-hydraulic and semi-mechanical driving systems. The research results show that this hydraulic driving system is reasonable, feasible and can meet the requirements of combine operation and severe conditions. It provides an important reference for the design and the configuration of driving systems in combines in China.