Self-tapping anchor bolts and anchor bolts clamp method

摘要

1. Self-tapping rock bolt, which is provided for use in mining, tunneling, underground and ground construction and for screwing in the rock or in buildings, vklyuchayuschiy- rod (2) of the bolt, which has a front end (3) and a rear end (4) - a drill bit (5) formed at the front end (3) of the rod (2) bolts, - self-tapping thread (9) for fixing the anchor bolt in the drilled using a drill bit (5) borehole, wherein chtoankerny bolt includes in addition to the shaft (2) of the bolt fastening element (7) as a separate component and self-tapping thread (9) formed on the fastening element (7) .2. Self-tapping rock bolt according to claim 1, characterized in that the fastening element (7) is movably mounted axially on the shaft (2) bolta.3. Self-tapping rock bolt according to claim 1, characterized in that the fastening element (7) is formed, in particular in the form of a sleeve (8) with an opening (10) within the bore (10) is a rod (2) and self-tapping screw thread (9 ) formed on the outer side of the fastening element (7) .4. Self-tapping rock bolt according to claim 3, characterized in that from the terminal (2) to the bolt attachment member (7) can be transmitted torque, in particular by form-locking connection between the fastening element (7) in the hole (10) and rod (2) bolta.5. Self-tapping rock bolt according to claim 3, characterized in that on the fastening element (7) in the hole (10) and the rod (2) is formed by a bolt, respectively, at least one surface (11) slides, which respectively lie on each other and promote the axial bearing with the possibility of sliding krepezhnog