Lock foot positioning device

The utility model discloses a locking foot positioning device which comprises two fixing plates with different heights, the two fixing plates are fixedly connected through a connecting plate, fixing grooves are formed in the upper sides of the two fixing plates and are arranged in a left-right through mode, two fixing frames are symmetrically and fixedly connected to the lower sides of the two fixing plates, and the two fixing frames are fixedly connected to the lower sides of the two fixing plates. Sawtooth rods are rotatably connected into the two fixing frames, conical rods are fixedly connected to the lower sides of the sawtooth rods, cavities are formed in the two fixing plates, moving plates are connected into the cavities in an up-down sliding mode, and two moving rods are symmetrically and fixedly connected to the lower sides of the moving plates; the two moving rods penetrate through the cavity and the fixing frame, and the two moving rods are located in the fixing frame and fixedly connected with a