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当前,在迈步式索斗铲结构上的最大革新,是制造了积木化挖掘机,其斗容达20米~3。例如美国 B-E 公司制造了一台最大的积木化迈步式索斗铲,其标准斗容为19.9米~3,大臂长90米,最大挖掘深度为58米;采用固态电子装置控制交流电机或装备双柴油机和液力变矩器。另一个重要的发展,是在迈步式索斗铲上首次使用长达122米的悬臂。
At present, the biggest innovation in the step dragline structure is the construction of a block excavator, which has a bucket capacity of 20-3. For example, the United States BE company made one of the largest blocks of wood-powered step dragline shovel, its standard bucket capacity of 19.9 m ~ 3, boom length of 90 meters, the maximum excavation depth of 58 meters; using solid-state electronic devices to control AC motors or equipment Dual diesel engine and torque converter. Another important development is the first use of a cantilever up to 122 meters in a step-style dragline.