This paper describes the reason for burnt sliding ring of coiling motor used for clamshell crane, puts forward preventative measures and Suggestions and introduces repairing standard and method.

本文叙述了精矿库抓斗吊车绕线式电机滑环烧损原因，提出了预防措施和建议，介绍了滑环修复标准和方法。

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According to actual condition, the strengthening scheme of the crane girder has been brought forward.

根据工程实际情况，提出了吊车梁的加固方案。

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The dynamic optimization method of determining the counterweight and its center of portal crane is put forward.

提出了确定门机对重质量及其位置的动态优化法。

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Tigers forward Crane calmly converted from the 22-metre line to clinch it.

BBC: I enjoyed pressure kick - Crane

Forward Jordan Crane crashed over in first-half injury time to put the Tigers well in control.

BBC: Tom Varndell (right) celebrates his try with Sam Vesty