| 摘要 |
<p>A self-boring rock anchor (11) has a hollow-cylindrical mounting body (12), that at one end (13) has a boring head (16), and an internal tube (21) provided in the mounting 5 body (12), the internal tube having an outlet opening (22) at a distance from the boring head (16) and accommodating a hardenable compound (26) that can be squeezed out. Between the hardenable compound (26) and the boring head (16) a mixing element (31) is provided in a displaceable manner in the internal tube (21). The boring head (16) has a holding fixture (18) facing the mixing element (31) for a free end (32) of the mixing to element (31) as well as a passing-through opening (17) for the hardenable compound (26). The holding fixture (18) of the boring head (16) has a centring section (20) and the mixing element (31) at its free end (32) which is facing the boring head (16) has a counter-centring section (33) that can be joined with the centring section (20) of the holding fixture (18) of the boring head (16). (Fig. 1)</p> |
