将钢骨柱固定在专用胎架上，通过倒链滑移至安装点下方后，采用滑轮组和卷扬机进行提升就位。
Steel column is fixed to special jig, slipping below the installation position by chain block and lifting by pulley block and windlass.
本发明公开了一种起重机，特别是一种具有螺栓固定式卷扬机构的履带起重机。
The invention discloses a crane, in particular to a crawler crane with a bolt fixing type hoisting mechanism.
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