| 摘要 |
PROBLEM TO BE SOLVED: To surely make a lifting device and the whole attachment impossible to overturn, even if a guide gib of the lifting device is disconnected from a leader side guide member due to an external factor.SOLUTION: A construction machine for ground construction work comprises: a leader 2 provided with a pin rack 27 or a rack; a lifting device 3 having a sprocket 33 or a pinion slidably fitted to the leader side and meshing with the pin rack or the rack and moving along the leader 2 by driving of the sprocket or the pinion; and the attachment 4 integrally moved with the lifting device and connecting a bar-like member such as a casing. The lifting device 3 comprises falling-off preventive means 7 for restricting the lifting device in an overturn impossible manner when the lifting device 3 is disconnected from the leader side. |
