Limiting device capable of controlling elevation of anti-floating anchor rod

The utility model relates to a limiting device capable of controlling the elevation of an anti-floating anchor rod. The limiting device capable of controlling the elevation of the anti-floating anchor rod comprises a supporting frame, the anti-floating anchor rod, a cushion block, a transmission structure and a supporting structure. The anti-floating anchor rod comprises at least three L-shaped twisted steel bars which are evenly distributed in the circumferential direction, the cushion blocks correspond to the L-shaped twisted steel bars in a one-to-one mode, a supporting plate with the position capable of being adjusted up and down is arranged above each cushion block, and the horizontal sections of the L-shaped twisted steel bars are placed on the supporting plates. The transmission structure comprises a worm gear, a worm, a transmission shaft, a bevel gear set and a jacking screw rod, the bottom of the jacking screw rod is fixedly connected with a pressing plate, and a plurality of first pressing rods are