| 摘要 |
PROBLEM TO BE SOLVED: To smoothly move a balance weight on a guide rail without affected by a conveyor chain. SOLUTION: In a balance correcting device of this balance weight, the balance weight is separated from a conveyor chain 9 by a link 20 when most of the weight of the conveyor chain is applied to the other end of the link 20, and the balance weight 19 is made close to the conveyor chain 9 when the weight of the conveyor chain 9 is applied to the other end of the link 20 not so much.
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