China University of Mining and Technology (CUMT)

Hohai University

China Mining & Civil New Material Science and Technology Ltd.

Wei Xie

Meng Yang

Huaizhi Su

Chongshi Gu

Junwu Xia

Jianbiao Bai

Hongfei Chang

Yaping Lu

Fengjie Zhang

The present invention discloses a blind bolt fastening device, and belongs to the technical field of bolts. The blind bolt fastening device includes Z-shaped gaskets, a fixed plate, elastic hinges, a screw cap, a nut, an integrated gasket and the like. The top end of the screw cap is connected to the fixed plate in a spot welding manner. A plurality of elastic hinges is uniformly mounted on the fixed plate. One end of each elastic hinge is rotatably fixed on the fixed plate. Connection points of the elastic hinges and the fixed plate do not exceed the outer edge of the fixed plate. The other end of each elastic hinge is connected to one Z-shaped gasket in a spot welding manner. In an initial state, the plurality of Z-shaped gaskets are uniformly distributed and fitted onto the outer wall of the screw cap along a circumferential direction. When needing to pass through amounting hole, the plurality of Z-shaped gaskets may be folded through the elastic hinges to the top end of the screw cap and form elastic potential energy for rebounding. The present invention realizes simple and quick single side installation of a bolt and may be widely applied to civil and architectural engineering, mechanical engineering and the like.

Blind bolt fastening device

A fiber acoustic emission sensing apparatus and method including a laying device and an acoustic emission source; the laying device comprises base plate, first side plate and second side plate, the top portion of the first side plate connected with the top portion of the second side plate through an arc-shaped fiber-carrying channel, a main cavity formed by the first side plate and the second side plate; top portions of the first and second side plates respectively hinged with first and second arc-shaped covers, the lower end surface of the first arc-shaped cover fixedly connected with a first arc-shaped pressing body, the lower end surface of the second arc-shaped cover fixedly provided with a second arc-shaped pressing body, a first sensing fiber arranged under the first arc-shaped pressing body, and a second sensing fiber arranged under the second arc-shaped pressing body.

Fiber acoustic emission sensing apparatus and method for service behavior of hydraulic concrete structure

Growing community of inventors

Jiangsu, China

Wei Xie