Differential mechanism oil liquid level detection device

The utility model discloses a differential mechanism oil liquid level detection device, including gas source device, detect a rifle and a pressure sensor, gas source device and the air inlet intercommunication that detects the rifle, a pressure sensor and the gas outlet intercommunication that detects the rifle, air inlet and gas outlet all with the rifle mouth intercommunication that detects therifle, gas source device with detect series connection first control valve between the rifle, detect series connection second control valve between a rifle and the pressure sensor, and the first control valve return circuit of blowing of connecting in parallel, the series connection has the third control valve on the return circuit of blowing. The utility model discloses technical scheme is through setting up the first control valve at gas source device and between detecting the air inlet of rifle, set up the second control valve between the gas outlet of detecting the rifle and a pressure sensor, sets up simultaneous