Zero and negative overload oil supply device for basic training plane

The invention relates to a zero-negative overload oil supply device for a basic training aircraft, which belongs to an aircraft fuel system and comprises an oil inlet pipe, a fuel filter, a stunt oil tank assembly, an auxiliary oil pump, a check valve, a shut-off valve, a pressure sensor group, a limiter and an oil return pipe. The device is characterized in that fuel oil in an oil supply tank enters a stunt oil tank assembly through an oil inlet pipe and a fuel oil filter and reaches a certain pressure, the fuel oil is supplied to an engine through an oil conveying pendulum bob, a check valve and the like, redundant oil gas in the assembly flows back to the oil supply tank through a limiter under the action of the pressure, and the assembly is continuously in a full oil state; when an aircraft is in a zero-negative overload state for a short time and an oil supply tank cannot supply oil normally, an oil delivery pendulum bob points to the stored oil of the assembly under the action of acceleration, a built-i