The tractor is a self-propelled power machine used to pull and drive work machinery to complete various mobile operations. It can also be used as a fixed working power. It is composed of engine, transmission, walking, steering, hydraulic suspension, power take-off, electrical instrumentation, driving control and traction and other systems or devices. The engine power is transmitted by the transmission system to the drive wheels to make the tractor drive, and in real life, it is common to use rubber belts as the medium of power transmission. According to the function and use, it is divided into agricultural, industrial and special-purpose tractors; According to the type of structure, it is divided into wheeled, crawler, boat-shaped tractor and self-propelled chassis.
Although the tractor is a relatively complex machine, its type and size are also different, but they are all composed of three parts: engine, chassis and electrical equipment, each of which is indispensable.
motor
It is a device for the tractor to generate power, and its role is to convert the thermal energy of the fuel into mechanical energy to output power outward. Most of the agricultural tractors produced in China use diesel engines.
chassis
It is a device for the tractor to transmit power. Its function is to transmit the power of the engine to the driving wheels and the working device to make the tractor drive, and complete the mobile operation or fixed role. This role is achieved through the mutual cooperation and coordination of the transmission system, walking system, steering system, braking system and working device, and at the same time they constitute the skeleton and body of the tractor. Therefore, we refer to the above four major systems and one major device collectively as the chassis. That is, in the whole of the tractor, all other systems and devices, except for the engine and electrical equipment, are collectively called the tractor chassis.
Electrical equipment
It is a device that guarantees the use of electricity for tractors. Its role is to solve the problem of lighting, safety signals and engine starting.