| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in a structure, where a lock pin in a carrier tool for securing attachments is energized directly by a compression spring, that a wrench is generated in the lock pin, which results in a friction between the lock pin and the lock-pin supporting member to make it difficult for the lock pin to slide smoothly and also a friction at a rod or the like connecting the lock pin to require an extremely large control force in an operation lever, and therefore an installation/removal of a bucket becomes hard. SOLUTION: In the structure where a working machine is attachable to a hitch of a main-machine side, an engaging pin (40) at one end and a hook (51) at the other end of the upper part are engaged, whereas a lock pin (42) at one end of the lower part can be inserted/extracted and inserted into an insertion hole at the other end to lock thereto. Furthermore, a spring is provided as a compression spring (57) to energize an operation lever (46) for insertion/extraction of the lock pin toward the locking direction. COPYRIGHT: (C)2005,JPO&NCIPI
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