CRANE

PROBLEM TO BE SOLVED: To provide a crane which is movable and installable easily and can efficiently perform a lifting operation. SOLUTION: This crane includes a mast 3 which is vertically installed on a base 2 and extensible, a beam 5 which extends horizontally, which comprises an intermediate beam (intermediate member) 5b held on the upper part of the mast 3, a front end beam (first end member) 5a connected to one end of the intermediate beam 5b, and a rear end beam (second end member) 5c connected to the other end of the intermediate beam 5b, a lifting part 8 which is movably held by the front end beam 5a and lifts a beam form (object to be lifted) 52, an electric winch 6 installed to the rear end beam 5c, and a wire rope 7 which is wound and unwound by the electric winch 6 and vertically moves the lifting part. The front end beam 5a and the rear end beam 5c are vertically rotatable about the connection parts thereof with the intermediate beam 5b. The wire rope 7 extends from the electric winch 6, and the front end thereof is fixed to the front end beam 5a. COPYRIGHT: (C)2011,JPO&INPIT