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本文介绍一九七九年从日本利根公司引进的V型绳索取心钻具结构及其特点。一、概 述V型绳索取心钻具用于垂直钻孔包括HQT和NQT（T表示利根）两种尺寸（见表1），绳索取心钻具由单动双管和打捞器两部分组成。1．单动双管：由内管总成和外管总成构成（图1）：内管总成包括打捞接头①、弹卡机构②、悬挂定位装置③、调节机构④、单动装置⑤、内管⑥、岩心卡取机构⑦、报信装置⑧、缓冲装置⒄等组成；内管总成上部结构见图1所示。
This article describes the structure and characteristics of a V-type cord coring tool introduced from Japan’s Legan Corporation in 1979. I. Overview V-type cord coring tools for vertical drilling, including HQT and NQT (T said Lee root) two sizes (see Table 1), rope coring drill by the single-action double-tube and two parts of the salvage. 1. Single-action double pipe: the inner pipe assembly and the outer pipe assembly (Figure 1): The inner pipe assembly includes the salvage joint ①, the snap-in mechanism ②, the suspension positioning device ③, the adjustment mechanism ④, the single-action device ⑤, Tube ⑥, the core access mechanism ⑦, message device ⑧, buffer device ⒄ and other components; the upper part of the inner tube assembly shown in Figure 1.