柱式旋臂起重机是CD1、MD1型电动葫芦及手拉葫芦配套使用的一种轻小型起重机械。葫芦沿工字钢作直线运动和悬臂作旋转运动。
Column crane arm is a light and small lifting machine in which CD1, MD1 electric pulley and chain hoist are used together. The pulley moves in straight line along the I-shape steel and rotates along the swing arm.
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