Agricultural tractors are mechanical engineering equipment primarily used for traction and driving of supporting machinery to achieve purposes such as plowing, soil preparation, sowing, harvesting, and transportation in crop fields. Their development has undergone technological innovations from steam power to internal combustion engines. In the mid-to-late 19th century, the United Kingdom took the lead in introducing steam-powered tractors, and in 1868, the British company Garrett & Sons launched the first steam-powered agricultural tractor. In the early 20th century, gasoline engine-driven tractors gradually became popular and replaced animal power. China imitated and produced its first wheeled agricultural tractor in 1950. According to the operating environment, they can be divided into dry land and paddy field types, with dry land tractors further subdivided into general purpose, cultivation, orchard, and horticulture types. Modern agricultural tractors mostly use diesel engines and are composed of three parts: the engine, chassis, and electrical equipment
