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苏联中央设计局研制成一种A－1型抓岩机(见图),在用打眼爆破方法掘进截面1415×1415毫米,深达30米的垂直勘探竖井时,可用它来抓运岩石。抓岩机有五个颚板,单软管液压式远距离操纵。抓岩时竖井底面不需要工人。抓岩机
The Central Bureau of Design of the Soviet Union developed a type A-1 rock-grabber (see photo). It can be used to grab rock when drilling a vertical exploration shaft of 1415 × 1415 mm in cross-section with a shot blasting method. Grasping rock machine has five jaws, single-hose hydraulic remote control. Shafts do not need workers when grasping rock. Grasp rock machine