Recoverable anchor rod device

The utility model discloses a recoverable anchor rod device including a screw rod (3), which is characterized in that an externally-sleeved steel tube is arranged outside the screw rod (3). An upper cover plate (2) is arranged at the top end of the externally-sleeved steel tube (4); a nut (1) is arranged at the top end of the joint of the screw rod (3) and the externally-sleeved steel tube (4); the upper cover plate (2) is clamped in an outer groove of the nut (1); a lower cover plate (5) is arranged at the bottom end of the externally-sleeved steel tube (4); an upper rib (7) is arranged on the lower cover plate (5); a bulkhead (6) is fixed on the upper rib (7); one end of a lower rib (8) is connected with the upper rib (7); the other end of the lower rib is connected with an anchor cone body; and the screw rod (3) is connected with a conical head through threads. The utility model provides the anchor rod device which has the advantages of full reusability and high bearing capacity, and is used for the tempor