What are the applications of hydraulic technology in agricultural machinery?

With the improvement of the level of agricultural mechanization in our country, especially the promotion of small agricultural machinery in the hilly areas of Jiangnan, our country's agricultural modernization has developed rapidly.The application of hydraulic technology has effectively promoted the degree of automation of agricultural machinery and further promoted the popularization of agricultural machinery.The application of hydraulic technology in agricultural machinery is multifaceted, providing various technical support such as adjustment, power, and assistance for agricultural machinery.There are three main aspects: first, agricultural machinery used in the production of bulk food crops, such as tractors, harvesters, seeders, etc.In harvesters, the hydraulic system mainly plays the role of controlling the height of the harvester, the opening and closing of the granary, etc.; In tillers, the hydraulic system can also provide the driving force for the control of tillage depth and the lifting of ditches; in agricultural tractors, the application of hydraulic technology optimizes the connection process between tractors and supporting agricultural tools.

The second is the research and development of agricultural machinery.With the progress of science and technology, agricultural machinery is also developing in the direction of automation and intelligence, and the scientific application of hydraulic systems can not only provide sufficient power for agricultural machinery, but also effectively improve the operating efficiency of agricultural machinery.For example, electro-hydraulic control technology can easily realize a variety of complex hydraulic function requirements.There is also hydraulic suspension technology, which solves the power drive problem of folding, flipping and other functions on agricultural machinery with combined duplex operation.The third is the agricultural machinery used in cash crops.The use of hydraulic systems in this type of agricultural machinery mainly involves large-scale translational sprinkler irrigation machines and cotton intercropping machinery.However, agricultural machinery often works outdoors and is easily affected by vibration, sunlight, rainfall and other factors, so the daily maintenance and maintenance of the hydraulic system of agricultural machinery is very important.There are four common faults in the hydraulic system of agricultural machinery, namely insufficient operating power of the hydraulic system, unstable hydraulic drive process, leakage of the hydraulic system or damage to components, and excessive temperature of the hydraulic system.What should I do if these failures occur?If the operating power of the hydraulic system is insufficient, the reason may be that the pressure of the main oil circuit is too low. At this time, it is necessary to check whether the safety valve adjustment value and working conditions of the hydraulic system meet the actual requirements of the hydraulic system, and also check whether the joints of the parts are tightened, and if necessary, replace the components with high sealing properties.

If the hydraulic drive is unstable and abnormal noise occurs, it is necessary to check whether the hydraulic pump bearings, blades and other components are aging, and whether the axial gap wear is serious.If it is an abnormal noise of the control valve, the control valve seat must be polished to restore its sealing performance or replaced, and the deformed and failed internal pressure regulating spring must be checked to restore the pressure regulating function.If it is a leakage of the hydraulic system, the cause of the leakage should be identified according to the location of the leakage, and the status of the joints and tubing should be checked, as well as the gap between the moving parts of the valve and the cylinder mating components, and the severely worn parts should be replaced in time.If the temperature of the hydraulic system is too high, the reason may be that the viscosity of the hydraulic oil is too high, or the mechanical tubing and cooler are blocked, or it may be that the system pressure value is too large, the hydraulic system leaks, and the parts are severely worn.Therefore, when the temperature of the hydraulic system is too high, these aspects can be investigated from these aspects.In addition, there are other faults such as intermittent movement of hydraulic cylinders and high viscosity of hydraulic oil. This requires careful inspection and accumulation of experience by operation and maintenance personnel in use to improve their understanding of the operating principles of agricultural machinery hydraulic systems.