Wellhead lifting protection device of underground water monitoring well

The utility model belongs to the technical field of monitoring wells, and particularly relates to a wellhead lifting protection device of an underground water monitoring well. The device is characterized in that n casing pipes are vertically stacked, and the lower ends of the casing pipes are arranged on a wellhead of an underground water monitoring well in a sealed and sleeved mode; the casing pipe buckles are arranged at the joints of the casing pipes, and m first rope buckle rings are evenly distributed on the peripheral face of each casing pipe buckle. The m anchor rods are annularly and uniformly distributed by taking the sleeve as the center and are inserted into the ground; every n-1 movable buckles are arranged on one anchor rod, the movable buckles on each anchor rod are correspondingly equal in height from top to bottom, a second rope retaining ring is arranged on the outer side of each movable buckle, and the second rope retaining rings face the sleeve; the first rope retaining ring and the second