First, the concept and function of hydraulic valves
Hydraulic valve is the core component in the hydraulic control system, which can control the parameters such as liquid flow and pressure in the hydraulic system, and realize the complex operation of various hydraulic actuators. In agricultural machinery, hydraulic valves are often used to control complex operations such as lifting, lowering, turning, steering, braking, and speed control of agricultural machinery, which can improve the efficiency and reliability of agricultural machinery.
Second, the classification of hydraulic valves
According to different control methods and functions, hydraulic valves can be divided into the following types:
1. Directional control valve: It can control the flow direction of the liquid and the action direction of the machine, and is widely used in the hydraulic system of agricultural machinery.
2. Relief valve: the pressure in the system can be controlled, when the system pressure exceeds the set value, the valve will automatically open, reduce the pressure and protect the hydraulic system.
3. Quantitative pump and quantitative valve: It can control the flow of liquid and ensure the stable and accurate working of the hydraulic system.
4. Proportional valve: It is a valve specially used to control the pressure and flow of liquids, which is widely used in the control fields of pressure, flow, position and speed.
Third. Application of hydraulic valves in agricultural machinery
Hydraulic valves have a wide range of applications in agricultural machinery, and the following are the common applications of hydraulic valves in agricultural machinery:
1. It is used to control the lifting and lowering of agricultural machinery: such as the front hanging device and rear hanging mechanism of harvester and tractor.
2. Control the steering and turning of agricultural machinery: such as hydraulic steering gear, rotor controller, etc.
3. Control the speed and movement of agricultural machinery: such as walking gearbox, gearbox, transmission axle, etc.
The application of hydraulic technology in agricultural machinery is multifaceted, providing adjustment, power, power and other technical support for agricultural machinery. As the core component of the hydraulic system, hydraulic valve has a wide range of applications and an important position in agricultural machinery, which can realize various complex operations and improve the efficiency and reliability of agricultural machinery. With the improvement of the level of agricultural mechanization in China, especially the promotion of small agricultural machinery in the hilly areas of the south of the Yangtze River in China, China's agricultural modernization has developed expressly. The application of hydraulic technology has effectively promoted the automation of agricultural machinery and further promoted the popularization of agricultural machinery.
However, agricultural machinery often works outdoors and is easily affected by factors such as vibration, sunlight, and rainfall, so the daily maintenance and maintenance of the hydraulic system of agricultural machinery is very important. The common faults of the hydraulic system of agricultural machinery are mainly caused by four aspects, namely, the insufficient power of the hydraulic system, the unstable hydraulic drive process, the leakage of the hydraulic system or the damage of components, and the temperature of the hydraulic system is too high.
agricultural machinery tractor
hydraulic valve for agricultural machinery