Cutting device and method for pipeline wall trepanning

The invention relates to a cutting device and method for pipeline wall trepanning. The cutting device comprises a center shaft, a screw is arranged at the fixing end, used for being fixed to a pipeline, of the center shaft, the screw is in threaded connection with a locking piece, a rotating sleeve is slidably connected to the center shaft, the center shaft is detachably provided with a stopping piece, and an elastic piece is arranged between the stopping piece and the rotating sleeve. The rotating sleeve is provided with a first supporting rod and a second supporting rod, the first supporting rod is connected with a supporting wheel, the second supporting rod is connected with a cutting gun, and the cutting device is high in applicability. 本发明涉及一种用于管道管壁开孔的切割装置及方法，包括中心轴，中心轴的用于与管道固定的固定端设有螺杆，螺杆螺纹连接有锁紧件，中心轴上滑动连接有旋转套，中心轴可拆卸设有止挡件，止挡件与旋转套之间设有弹性件，旋转套设有第一支承杆和第二支承杆，第一支承杆连接有支承轮，第二支撑杆连接有割枪，本发明的切割装置适用性强。