High bolt installation lengthening device and application method thereof

The invention relates to a high bolt installation lengthening device and an application method thereof. The device comprises a lengthening rod, a sleeve and a torque spanner. One end of the lengthening rod is detachably connected with a clamping disc of the torque spanner, and the other end of the lengthening rod is detachably connected with a clamping end of the sleeve; the other end, opposite tothe clamping end, of the sleeve is a bolt matching end; and the bolt matching end of the sleeve is matched with high-strength bolts in rotating torque. The method is suitable for operation with shielding matters. The invention provides a solution for the screwing work of part of high bolts with less operation space; the device has no need to perform manual screwing of the high bolts; meanwhile, the screwing speed of the high bolts is high; the quality is high; and the operation process is simple. 本发明涉及一种高栓安装接长装置及其使用方法，装置包括一根接长杆、一个套筒和扭矩扳手。接长杆一端与所述扭矩扳手的卡接盘可拆卸的连接，所述接长杆的另一端与所述套筒的卡接端可拆卸的连接，套筒的与卡接端相对的另一端为螺栓适配端，所述套筒的螺栓适配端与高