| 摘要 |
The invention refers to an anchoring system on concrete, on basis of threaded bolts to be installed in holes previously made on the concrete or material to be dealt with. Such improvements are centered in the existence at the internal end of the stud (1), of a trunk-conical head, immediately inside which is located, on the stud (1), an assembly of pieces (3) which determine a cylindrical bush (5), having its internal surface striated, like the external surface of the head, and with its external surface provided with a perimetral groove, on which is located an elastic ring (4) which holds such pieces (3) adapted against the neck of the stud (1). The said groove constitutes a weakening line for such pieces (3), through which, during the tightening, these are obtusely bent outwards, creating a radial and effective overdimensioning of the head, which is going to give rise to the mooring point of the bolt in the widening established at the bottom of its corresponding housing. |
