DOOR DEVICE HAVING PIT COVER

摘要

The present invention relates to a door device having a pit cover. The purpose of the present invention is to provide a door device having a pit cover, capable of automatically covering a pit of an entrance by a pit cover if a door is opened in a door device having the pit on the bottom surface of the entrance. According to the present invention, the door device comprises: a door (12) to open and close an entrance (5) of a storage facility sideways; a pit (P) formed along the moving direction of the door (12) on the bottom of the entrance (5); a lower sliding supporting means (100) provided in the lower part of the door (12) and accommodated inside the pit (P) to allow the door (12) to slide; and a sliding supporting means (20) provided in the upper part of the door (12) to allow the door (12) to slide and move. The door device comprises: a pit cover (190) provided along the direction of the pit (P) in one side of the lower part of the door (12) and sliding with the door (12); a lower guide rail (102) provided on the bottom surface of the pit (P); multiple pit cover sliders (110) sliding along the lower guide rail (102); and multiple connecting members (120) extended downwards from the bottom surface of the pit cover (190) and connected with the pit cover slider (110). If the door (12) is opened sideways, the pit cover (190) covers the pit (P) on the entrance (5).