Field detection device for reversing valve

The invention relates to a valve body detecting system, in particular to a field detection device for a reversing valve. The valve body detecting system comprises a hydraulic mechanism and the detection device, wherein the hydraulic mechanism is used for being connected with the reversing valve to be detected and providing hydraulic pressure, and the detection device is connected with the reversing valve to be detected and used for detecting abrasion. The hydraulic mechanism comprises an oil tank, a hydraulic pump connected with the oil tank, and a hydraulic pipeline connected with the hydraulic pump and the reversing valve to be detected. A pressure regulating device is arranged on the hydraulic pipeline. The detection device comprises a hydraulic cylinder. A gauge point is arranged on a rod body of the hydraulic cylinder, and a testing ruler is arranged beside the rod body. According to the field detection device for the reversing valve, the hydraulic mechanism and the detection device are connected with the reversing valve to be detected, internal leakage of the reversing valve is converted into a measurement variable of the hydraulic cylinder in the given time based on the internal leakage of the reversing valve, and the breakage condition of the reversing valve is judged according to the measurement variable of the hydraulic cylinder in the given time. The field detection device for the reversing valve is convenient to use, small in power consumption, accurate in testing and quite suitable for testing judging elements of outdoor isolated hydraulic systems.