| 摘要 |
PROBLEM TO BE SOLVED: To provide a derricking apparatus for a gib crane which reduces a derricking rope load necessary for derricking a gib in a gib rest mode, realizes down-sizing of a derricking rope and down-sizing of a derricking winch and a sheave and thereby achieves weight saving of the whole gib crane so as to reduce costs.SOLUTION: A derricking apparatus for a gib crane has a derricking rope receiving mechanism 15 which widens the distance L4 from a derricking central axis 5 to a derricking rope 10 in the gib rest mode in which a gib 4 is lodged maximally, so as to reduce a derricking rope load F. |
