Mining balanced air door mechanical latching device

The utility model provides a mining balanced air door mechanical latching device, to blocked mechanical system of effect on the sliding door who extrapolates, this blocked mechanical system includes on the sliding door that outwards draws on one air door and another adjacent air door: double track way, a pair of transmission pipe, weight, wire rope, connecting rod and a pair of baffle, a pair of transmission pipe is placed respectively in the double track is said, wire rope's one end is fixed on the sliding door, the other end passes a transmission pipe, weight in proper order, another transmission pipe after -fixing is in sliding door is last, and wire rope manages the rigid coupling with a pair of transmission respectively, the pin joint is at the both ends of connecting rod respectively at the top of a pair of baffle, and the pin joint is at two orbital both ends respectively at the middle part, and when transmission pipe was pulled out the double track way through a baffle, another transmission pipe was s