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近几年来,美、英、瑞典、加拿大等国研制出动力水接头式岩心钻机,并成功地应用于中深度金刚石岩心钻进。这类钻机,打破了传统钻机的结构型式,从结构原理上进行了革新,更适应金刚石钻进工艺的要求。动力水接头式岩心钻机取消了立轴,用液压马达驱动一个可沿导向架移动的回转器—动力水接头。实现了钻具转速的无级调节和长行程不倒杆钻进,动力水接头与孔口处轻便的钻杆夹持器相配合,可实现扭卸管机
In recent years, the United States, Britain, Sweden, Canada and other countries developed a dynamic water joint core drilling rig, and successfully applied to medium-depth diamond core drilling. This kind of drilling rig has broken the structure of traditional drilling rigs, and has been reformed from the structural principle to meet the requirements of diamond drilling technology. The power-water joint core drill removes the vertical shaft and uses a hydraulic motor to drive a gyrator-powered water joint that can move along the guide frame. The stepless adjustment of the rotational speed of the drilling tool and the long-stroke non-reverse-bar drilling are realized, and the power water joint cooperates with the portable drill pipe holder at the hole to realize the twisting and unloading machine.