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一两年前,我曾向一位求知心很强的朋友描述过深井旋转钻机最新的技术变革。起初我只介绍了当时我在潜心研究的一种自动双吊卡系统,但随后又将话题扩展到动力大钳、动力水龙头、新型立根排放机构、甚至还涉及那些一再出现的自动钻机。在结束谈话时,我的朋友面带迷惘的神色问道:“难道旋转钻机只能老是这样吗?” 我立即意识到为什么他会感到困惑。他曾经和我一起在露天煤矿工作多年,研制和维修
A year or two ago, I described the latest technological changes to deep-well rotary drilling rigs to a well-known friend. At first I only introduced an automatic double-deck system that I was studying with great concentration, but then extended the topic to power tongs, power faucets, new standpipe discharge mechanisms, and even to those recurring automatic drilling rigs. At the end of my conversation, my friend asked with a disillusioned look: “Is it not always the case that a rotary drilling rig is used?” I instantly realized why he would be confused. He worked with me for many years in surface coal mines, developing and repairing it