A Wind pressure smoke door for train tunnel refuge

摘要

The present invention relates to a wind pressure smoke door installed in a train tunnel refuge. The wind pressure smoke door installed in the train tunnel refuge has a hinge unit and a locking unit of an improved structure by preventing a smoke door installed in the refuge from being damaged or being separated even if there is suddenly high wind pressure generated as a railroad vehicle passes at a high speed. The wind pressure smoke door installed in the train tunnel refuge can improve structural strength of the door to prevent the smoke door from being deformed due to impact applied when the railroad vehicle passes when the door is open. The wind pressure smoke door comprises: a frame (10); and a double-door type door (40) opened and closed, wherein one end of the door (40) is connected to the inside of the frame (10) by a hinge unit (20) and the other end includes the locking unit (30) locked/unlocked. The hinge unit (20) includes a thrust bearing (22) and a ball bearing (23) are installed in the hinge unit (20) to support a hinge shaft (21) in the lower part of the frame (10). The ball bearing (24) is installed in the upper part of the frame (10) to support the hinge shaft (21). The door closer (25) is installed in the upper part of the frame (10) to remove a burden on a load of the door (40). The locking unit (30) comprises: a hanging groove (31) installed in the upper part and the lower part of the frame (10); a locking piece (32) in the shape of a square cross section, hung on the hanging groove (31); and a separating and reinserting device (33) for separating the upper and lower locking pieces (32) from the hanging groove (31) of the upper part and the lower part at same time or reinserting the upper and lower locking pieces (32).