在工程勘察和砂矿钻探中，多进行冲击钻进。升降钻具或取样时以往采用老式切口提引器，摘挂笨重，起放钻杆、钻具不安全，易损坏，且仅限于孔外（地表）使用，不能满足冲击钻进、孔底取样的要求。针对这一情况，我队研制了一种特轻型提引器，经生产实际使用，性能很好，其结构如附图。 In engineering investigation and sand mine drilling, more impact drilling. In the past, the old cutting and lifting device was adopted for lifting or sampling the drilling tools. The heavy cutting tools were used to pick and place the drill pipe. The drilling tools were unsafe and easily damaged. They were limited to the use of holes (surface) Request. In response to this situation, I team developed a special light-type device, the actual use of the production, good performance, its structure as the photo.