A boom attach/detach device includes a boom, an extensible cylinder, and a boom supporting device. At least a part of the boom supporting device is arranged more to a boom front end side than an upper slewing body. When the extensible cylinder conducts extension and contraction operation in a state where coupling between the upper slewing body and the boom by a boom foot pin is cut off, the boom supporting device supports the boom to enable a rear end portion of the boom to move in a boom axis direction. The boom can be attached or detached with ease without a need to use a separate power device from a crane to suppress increases in size, in mass, and in cost of an upper slewing body.
BOOM ATTACH/DETACH DEVICE OF CRANE AND BOOM ATTACH/DETACH METHOD FOR CRANE
08.03.2018
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
BOOM ATTACH/DETACH DEVICE OF CRANE AND BOOM ATTACH/DETACH METHOD FOR CRANE
Europäisches Patentamt | 2016
|Boom attach/detach device of crane and boom attach/detach method for crane
Europäisches Patentamt | 2020
|ATTACH AND DETACH DEVICE OF BATTERY FOR ELECTRIC VEHICLE
Europäisches Patentamt | 2016
|Attach and detach device of battery for elctric vehicle
Europäisches Patentamt | 2018
|