| 摘要 |
PROBLEM TO BE SOLVED: To provide a holding mechanism which can release and lock a clamp only by the winding up and the winding down operation of a crane, without operating by fingers. SOLUTION: This holding mechanism to lock and unlock a gripping member to a specific position which is opened and closed interlocking to the relative movement of an operation member is provided. The holding mechanism has a moving member, a groove 37, and a rotary member 32. The groove 37 has a large expanding part having a large groove space, and an engaging projection engagable with an engaging recess part 32v provided to the rotary member. The rotary member can move relatively in a specific direction along a parallel groove, and it holds the operation member in the unlocking condition to a clamp body. By the engagement of the engaging recess part 32v of the operation member 32 and the engaging projection of the groove, the operation member 32 can be held in a locking condition to the clamp body. While the rotary member is movable in a specific direction at the large expanding part of the groove 37, it is rotatable, and by the movement in the large expanding part, and the rotation of the rotary member, the rotary member is changed between the unlocking condition and the locking condition.
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