| 摘要 |
PROBLEM TO BE SOLVED: To facilitate assembly of a field assembly type simple crane, without using any tools, which is transported in a disassembled state to a work field such as a mountainous area where crane operation using a vehicle-mounted crane and a crawler crane is difficult and capable of conducting crane operations including lifting of heavy load, moving fore-and-aft and back-and-forth and turning. SOLUTION: The field assembly type simple crane 1 is brought into the work field in a state in which an outrigger attaching part 3, an outrigger 4, a vertical pole 5, a boom 6, a boom elevation cylinder 8 and an electric winch 9 are disassembled, and in other words, it can be brought into the work field of bad foothold such as the mountainous area after disassembled into parts of which weight and dimensions are easy to deliver. Assembly and disassembly can be easily conducted by inserting connection pins without using any tools. COPYRIGHT: (C)2009,JPO&INPIT
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