Self-falling type anchorage of suspension cantilever beam laying end for construction

The invention discloses a cantilever sill beam suspending end self-falling anchor device applied to buildings, which is characterized by consisting of a pre-embedded pipe (1) fixed in a concrete major structure, a T-shaped bolt (2), a gasket (3) and a screw cap (4). The bolt head of the T-shaped bolt (2) is supported against the bottom surface of the concrete major structure, the gasket (3) and the screw cap (4) are installed on the screwed end of the T-shaped bolt (2) passing through the pre-embedded pipe (1) and a component (5) needing to be fixed, and the component (5) needing to be fixed is positioned between the gasket (3) and the surface of the concrete major structure. The invention has the advantages of simple and convenient manufacture craft, easy use of local materials, capability of being used repeatedly and saving a great amount of bar reinforcement and material cost, fast installation, precise position and wide usage.