Anchor rod device

The invention provides an anchor rod device which comprises a rod body provided with a front end and a rear end opposite to the front end in the length direction of the rod body. The position, close to the front end, of the rod body is sleeved with the expansion sleeve, the expansion sleeve is of an integrated structure, a deformation absorption gap is reserved between the expansion sleeve and the outer wall of the rod body, the expansion sleeve is only provided with a deformation release groove penetrating through the side wall in the radial direction, and the deformation release groove extends in the length direction of the rod body; the first end is close to the wedge sleeve, and the second end is far away from the wedge sleeve; the limiting sleeve is fixed to the rod body and abuts against the rear end of the expansion sleeve for limiting; and the wedge sleeve is arranged outside the rod body in a sleeving manner, and is embedded into and expands the expansion sleeve in an anchoring state. The anchor rod