Fault diagnosis simulation device for gearbox of petrochemical rotating unit

The invention discloses a fault diagnosis simulation device for a gearbox of a petrochemical rotating unit, which is applied to equipment to be tested, and the equipment to be tested is provided with an input transmission disc and an output transmission disc; a base, a power generation device, a load simulation device and a sensor assembly are included specifically. The sensor assembly is mounted on the base through a sensor mounting frame; the sensor mounting frame is connected to a T-shaped groove of the base, the upper surface of the base is connected to the equipment to be tested through a Y-direction sliding seat and an X-direction sliding seat in sequence, a first Z-direction sensor and a second Z-direction sensor are further arranged between the X-direction sliding seat and the equipment to be tested, and the first Z-direction sensor and the second Z-direction sensor are arranged on the two sides of the axis of the input transmission disc respectively; the input transmission disc is connected to the po