Operation control method, device and system of tower crane jacking mechanism, and tower crane

The invention relates to the technical field of crane machinery, and discloses an operation control method, device and system of a tower crane jacking mechanism, and a tower crane, which are used for improving the safety reliability of the tower crane. The operation control method comprises the following steps: obtaining an inclination angle of a jacking frame; when the inclination angle of the jacking frame is not zero and does not exceed a set guard inclination angle range, determining a movement direction of an amplitude-varying trolley according to the inclination angle of the jacking frame, outputting an amplitude-varying operation signal to an amplitude-varying mechanism, and controlling the amplitude-varying trolley to move to ensure that the absolute value of the inclination angle of the jacking frame is reduced.