Spare wheel up-down regulator convenient to clamp and lock

The utility model provides a spare tire up-down regulator convenient to lock, relates to the technical field of automobile tools, and comprises a shell, a rope winding guide wheel and a guide guide wheel, the rope winding guide wheel is movably arranged in the shell, the guide guide wheel is fixedly arranged in the shell, one side of the rope winding guide wheel is provided with a planetary tooth socket, and the other side of the rope winding guide wheel is provided with a planetary tooth socket. A planetary gear is arranged on one side of the guide wheel, and the caliber of the planetary tooth groove is larger than that of the planetary gear; through the elastic rotation effect of the guide block, the clamping and locking block is driven to make contact with the edge of the rope winding guide wheel all the time, once the rope winding guide wheel rotates reversely, the clamping and locking block can clamp the clamping and locking groove and prevent reverse rotation, after the rope winding guide wheel is full