Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Back bolt and connection structure
The invention provides a back bolt and a connection structure. The back bolt comprises an anchor pole and an expansion member. The expansion member has a cylinder main body and a plurality of expansion positions at one end of the cylinder main body, the external diameter of each expansion position is the same as that of the cylinder main body, each expansion position has a protruding portion, and the protruding portion is used as a bearing portion cooperating with a cone position of an bottom-expanded hole in a plate after the expansion position expands. The plurality of expansion portions at one end of the cylinder main body form an expansion segment, and the inner side of the expansion segment form a thinning position used for easily expanding and bending. The back bolt can well match a bottom-expanded hole, the anti-rotation and limiting measure does not influence cooperation between the back bolt and the bottom-expanded hole, and the cooperation having the good matching effect can be kept, permanent whole connection can be achieved, and the stress of an expansion position can be reduced to the minimum or zero. A never loosen connection structure can be formed using the back bolt, the connection structure can resist strong earthquake, and start-stop impact of a subway, and welding reinforcement is needless.
Back bolt and connection structure
The invention provides a back bolt and a connection structure. The back bolt comprises an anchor pole and an expansion member. The expansion member has a cylinder main body and a plurality of expansion positions at one end of the cylinder main body, the external diameter of each expansion position is the same as that of the cylinder main body, each expansion position has a protruding portion, and the protruding portion is used as a bearing portion cooperating with a cone position of an bottom-expanded hole in a plate after the expansion position expands. The plurality of expansion portions at one end of the cylinder main body form an expansion segment, and the inner side of the expansion segment form a thinning position used for easily expanding and bending. The back bolt can well match a bottom-expanded hole, the anti-rotation and limiting measure does not influence cooperation between the back bolt and the bottom-expanded hole, and the cooperation having the good matching effect can be kept, permanent whole connection can be achieved, and the stress of an expansion position can be reduced to the minimum or zero. A never loosen connection structure can be formed using the back bolt, the connection structure can resist strong earthquake, and start-stop impact of a subway, and welding reinforcement is needless.
Back bolt and connection structure
XU YUEHUA (Autor:in) / XU JIEYUAN (Autor:in)
21.10.2015
Patent
Elektronische Ressource
Englisch
Improved screw-in type back bolt and connection structure
| Europäisches Patentamt | 2015