Device for attaching bolt anchors to concrete structures

摘要

A socket dish is provided with a threaded nut (17) and in an axial extension of the centre axis of this nut a tube (12) is connected to the socket (15) enclosing an opening (22). The tube extends up to the surface of a cast concrete layer. The end of the tube remote from the socket can be connected to a nail plate (13) which can be nailed onto the shuttering (14). After manufacture of the concrete layer the bolt anchor (10) can be screwed through the tube into the threaded nut. The tube and socket dish can be made of plastics.