SHAFT SHUTOFF Russian patent published in 2019 - IPC E21D7/00 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and serves to shut off mine shaft in fire-hazardous situation, when performing works in shaft circuit and performing repair works in shaft. Shaft mine overlap includes stem platforms, closing traps turning in vertical plane, having slots for ropes passing. In the lower part closing traps are hinged on the frames. Frames are hinged on vertical elements of reinforcement machine in mating shaft with zero platform and are made with possibility of rotation in horizontal plane. Besides, frames are equipped with fixing devices that provide connection with elements of reinforcement machine. Each closing trap is equipped with drive mechanism with power stock, at that, drive mechanism is hingedly fixed on frame bracket, and its power stock is hingedly connected with closing trap.

EFFECT: technical result consists in simplifying the design of shaft shutting elements, increasing free space for works on zero platform and in shaft, higher convenience of operation and safety of servicing of lifting vessels and improved reliability of operation and reduced risks of failure of shutoff elements of the shaft.

3 cl, 3 dwg