Plate spring structure, suspension system and vehicle

The invention provides a plate spring structure, a suspension system and a vehicle. The plate spring structure comprises a spherical pin assembly which comprises a spherical pin body and a center locking piece, and the center locking piece is arranged on the spherical pin body in a penetrating mode; the number of the plate spring assemblies is two, each plate spring assembly comprises an upper plate spring, a lower plate spring and an inner connector, the upper plate springs are arranged on the upper sides of the lower plate springs, one ends of the upper plate springs are used for being connected with an auxiliary frame of the vehicle, the other ends of the upper plate springs are connected with the inner connectors, and the ends, away from the inner connectors, of the upper plate springs tilt upwards. One end of the lower plate spring is used for being connected with a steering knuckle of the vehicle, the other end of the lower plate spring is connected with the inner connector, the inner connector is used