Electric paddle system with magnetic variable pitch

An electric paddle system with a magnetic variable pitch comprises a driving motor and a paddle, a variable pitch crank arm is connected to the paddle, an output shaft of the driving motor is a hollow shaft, a variable pitch long pull rod is arranged in the hollow shaft in an up-down sliding and penetrating mode, an upper magnet is fixedly connected to the lower end of the variable pitch long pull rod, and a variable pitch driving box is fixedly connected to the lower portion of the driving motor. A linear motor is fixedly installed on the variable-pitch driving box, the action end of the linear motor is fixedly connected with a lower magnet, a driving transverse rod is fixedly connected to the upper portion of the variable-pitch long pull rod, one end of a connecting rod is hinged to the driving transverse rod, the other end of the connecting rod is hinged to a variable-pitch crank arm, and a lower spring seat is fixedly connected to the portion, on the upper portion of the driving transverse rod, of the var