This program can complete the designing and checking of a two-span continuous steel crane beam, and it can also draw of internal force envelopes and output the calculation files.

此程序可完成两等跨连续钢吊车梁的设计校核工作，并具有自动绘制内力包络图、输出计算书功能。

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Reasons for crane cable reel rebuilding are given with the new design, calculation of reel transmitting and the strength of output. The result of rebuilding is got.

电缆卷筒的改造原因，新卷筒的设计，卷筒传动及输出轴强度的计算，改造后的效果评价。

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