| 摘要 |
PROBLEM TO BE SOLVED: To actualize good traversing drive and braking stop even in an environment of severe weather conditions such as a cold region. SOLUTION: A trolley 1 is arranged in a freely crosswise traversing manner on a pair of front and rear crane gutters 7F, 7R via traverse rails 11F, 11R. Traversing wheels 12F, 12R, 13F, 13R are arranged on four corner positions of the trolley 1, respectively. The traversing drive unit 21 and the traversing wheels 12F, 13F are connected via propeller shafts 22F, 22L, respectively, and the traversing wheels 12F, 13F and the traversing wheels 12R, 13R are connected and interlocked via wrapping interlocks 25R, 25L, respectively. Thus, the trolley 1 of a four-wheel drive type is constructed with four traversing wheels to be synchronously driven. COPYRIGHT: (C)2004,JPO
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