The invention discloses a lifting tool for fishing an underground drill bit, and belongs to the technical field of lifting equipment, the lifting tool comprises a main truss, a wheel support, a barrel, a rotary ring and a transmission mechanism, a winding disc is assembled at the bottom of the main truss, one end of a chain belt is fixed on the main truss, the other end of the chain belt is assembled on the winding disc, and a driven gear is rotationally assembled on the wheel support; the driven gear is assembled on the chain belt in a meshed mode, a steel cable is arranged in the barrel, the top end of the steel cable is fixedly connected with the wheel support, the barrel is rotationally sleeved with the rotary ring, the rotary ring is connected with the driven gear through a transmission mechanism, and a pressure sensing unit is further arranged on the inner wall of the barrel and used for measuring the inclination direction of a drill bit. The wheel support and the cylinder are suspended below the main truss, the drill bit can be driven to rotate in the drill bit lifting process, single-side scraping between the drill bit and the well wall is avoided, the inclination state of the drill bit in the lifting process can be measured, and mechanical interference points can be effectively avoided in cooperation with the movable main truss.
本发明公开了一种井下钻头打捞用起吊工具,属于提升设备技术领域,包括主桁架、轮支架、筒体、回转环和传动机构,主桁架底部装配有收卷盘,链带一端固定于主桁架上,另一端装配于收卷盘上,轮支架上转动装配有从动齿轮,从动齿轮啮合装配于链带上,筒体中布设有钢索,钢索顶端与轮支架固定相接,回转环转动套设于筒体外,且与从动齿轮通过传动机构相接,筒体内壁上还布设有压感单元,用于测量钻头的倾斜方向,本发明通过在井口端设置有主桁架,并在主桁架下悬吊有轮支架及筒体,能够在提升钻头的过程中驱动钻头旋转,避免钻头与井壁间发生单边刮擦,还可测定钻头在提升过程中的倾斜状态,配合可移动的主桁架可有效规避机械干涉点。
Lifting tool for fishing underground drill bit
一种井下钻头打捞用起吊工具
2023-03-14
Patent
Elektronische Ressource
Chinesisch
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