| 摘要 |
PROBLEM TO BE SOLVED: To develop a crane operable in traveling while having a crawler device of a very narrow crawler central distance. SOLUTION: This crane 1 has an upper structure 2 for supporting a crane jib having a hoisting means, and rotatable around a vertical shaft 8, a carriage part 4 having the crawler device 21 for supporting the upper structure 2, and a support device 3 having a plurality of vertically movable outriggers 14. The upper structure 2 and the carriage part 4 are rotatably constituted to the support device around the vertical shafts 8 and 19. COPYRIGHT: (C)2005,JPO&NCIPI
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