Self-locking door of elevator maintenance crawling ladder

The utility model discloses a self-locking door of an elevator maintenance ladder stand, which comprises a welding stand column arranged on one side of the top of the ladder stand, a plurality of hinge seats are arranged on one side of the welding stand column, the plurality of hinge seats are uniformly arranged on the welding stand column, the distance between two adjacent hinge seats is equal, the other side of each hinge seat is connected with a crosspiece rod, and the crosspiece rod is fixedly connected with the welding stand column. Connecting plates are installed on the two sides of the other end of the transverse blocking rod and are of an L-shaped structure, and a stand column is installed between the connecting plates on the two sides in a hinged mode. According to the ladder stand, the self-locking door capable of being lifted is installed at the reserved neutral position of the top of the ladder stand, personnel are prevented from falling off under the condition that passing of the personnel is fac