The utility model relates to the field of mine ventilation, especially to the
air door air leakage prevention device suitable for underground rail transport lane, including traction
rope, sealing rubber and the buffer
assembly for controlling the
moving speed of sealing rubber, the traction
rope one end fixed mounting in the
air door door frame top, the other end connects sealing rubber, the
air door closing state time, sealing rubber will the gap between the air door bottom and the bottom plate and the rail shelter, the buffer
assembly includes fixed end and telescopic end, and the fixed end fixed mounting is in the air door top, and the telescopic end connects sealing rubber. In the air door closing state process, sealing rubber is affected by the force of buffer
assembly and extends out of the air door, and the gap between the air door bottom and the lane bottom plate, the rail is blocked, can effectively prevent the emergence of the air door air leakage problem, in the air door opening process, the air door in the baffle and sealing rubber are retracted under the traction effect of traction
rope, when the air door is closed, sealing rubber lags behind and extends out of the air door, effectively avoids the scratch of sealing rubber.