5″钻杆倒扣器(图工)由主体1(图2)、撑套2(图3)和心轴3(图各)组成。撑套下部铣有三个纵向槽的锥孔,与组装的心轴的圓锥面相配合,撑套外部除螺纹部分外铣成六方形,与主体下部的内六方孔相配合,心轴与主体用M80×4-2螺纹联接,组装时必须上紧。 5 "Drill Pipe Reverser (Figurine) consists of body 1 (Figure 2), bracing 2 (Figure 3) and mandrel 3 Of the mandrel conical surface match, outside the brace sleeve outside the threaded portion of the outer hexagonal milling, and the lower part of the main body of the six square hole with mandrel and the main body with M80 × 4-2 thread connection, the assembly must be tightened.