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(PURPOSE) To enhance the safety during maintenance and inspection work by forming a bending part in a middle part of a leg to fix a post with a wall surface of a lift passage of an elevator. (CONSTITUTION) In the case where maintenance inspection is carried out to check a pit by stopping an elevator

(PURPOSE) To enhance the safety during maintenance and inspection work by forming a bending part in a middle part of a leg to fix a post with a wall surface of a lift passage of an elevator. (CONSTITUTION) In the case where maintenance inspection is carried out to check a pit by stopping an elevator, a worker in charge of maintenance work stretches the worker's hand from an entrance 1 and removes a hook 22c from a step 7 at the uppermost stage of a ladder. As a result, a post 6 drops downward by its self weight and a bending part 9c is separated from a wall surface 8, centering on a pin 12 while the post 6 is separated from a switch 20a, thereby turning on a safety switch 20 and cutting off an operation circuit 21. A ladder is fixed at the point of time when the bottom of the post 6 comes into contact with a pit floor surface 2. At that time, the bending part 9c is turned in a completely extended state. After work, the post 6 is pushed against the wall surface 8 and the hook 22 is mounted to the step 7 on the uppermost stage so that the ladder is fixed with the wall surface 8. At that time, the safety switch 20 is turned off while the operation circuit 21 is switched on. This constitution makes it possible to increase an effective space for scaffolding.

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