Hydraulic turning plate car unloader based on synchronous trace oil drainage balance

The utility model relates to a hydraulic turning plate unloader based on synchronous micro oil drainage balance, an unloading mechanism comprises a base, a turning plate and two hydraulic cylinders, one end of the turning plate is hinged with the base, the two hydraulic cylinders are connected between the base and the turning plate, and the two hydraulic cylinders are used for driving the turning plate to rotate relative to the base. The two hydraulic cylinders are respectively provided with a first oil supply port and a second oil supply port, the balance valve is provided with an oil inlet, two first oil discharge ports and a second oil discharge port, the oil inlet is communicated with the oil supply assembly, the two first oil supply ports on the two hydraulic cylinders are respectively communicated with the two first oil discharge ports, and the two second oil supply ports are connected with the second oil discharge port through the control valve. The two pull rope sensors are arranged on the two hydraul