TAKE-IN AND OUT DEVICE WITH CAB

PURPOSE:To facilitate maintenance and inspection of a lift driving unit for a cab by providing the lift driving unit for the cab on the side of a lower part frame and providing a ladder for the descended cab. CONSTITUTION:A traveling main body 14 is constituted of a lower part frame 11 and a support 12, a carriage 16 free liftable is provided on the inner surface side of the support 12, and simultaneously, a cab 30 free liftable is provided on the outer surface side. Additionally, below a lifting route of the cab 30 and on the side of the lower part frame 11, a lift driving unit 40 for the cab is provided, and below the support 12 and on the side surface side, a ladder 52 to the descended cab 30 is arranged. At emergency time when the side of the carriage fails or in case of carrying out periodical periodical maintenance inspection work, against the cap stopping at the lowest limit adjacent to the lift driving unit 40 for the cab and the carriage 16 stopping at the lowest limit, a worker gets on and off by using the ladder 30. In the statte where the worker rides on, the cab 30 is made to ascend along the support 12 and it is possible to stop it at an optional position such as a position facing the carriage 16.