在联合收割机液压系统中,用于控制液压系统中油液的压力、流量和方向的液压元件统称为联合收割机液压控制阀。联合收割机液压控制阀在液压系统中起着重要的控制调解作用,因制造精密,配合要求高,所以也是极易发生故障的元件。据统计,在液压系统的总故障中,控制阀故障要占一半。控制阀故障主要是配合间隙变大,内漏增加,而无法正常工作。目前大多数企业对失效的液压阀多采用更换的方法。事实上,这些液压阀的多数部位尚处于完好状态 In the combine harvester hydraulic system, the hydraulic components used to control the pressure, flow and direction of the fluid in the hydraulic system are collectively referred to as the combine harvester hydraulic control valve. Combine harvester hydraulic control valve in the hydraulic system plays an important role in the control of mediation, due to manufacturing precision, with high requirements, it is also extremely prone to failure components. According to statistics, the total failure of the hydraulic system, control valve failure to account for half. Control valve failure is mainly with the gap becomes larger, increased internal leakage, and can not work properly. Most of the current business failure of hydraulic valves to replace the use of more methods. In fact, most of these hydraulic valves are still in good condition