Electrically controlled shifting pipeline heater

The utility model relates to an electrically controlled shifting pipeline heater which mainly comprises an annular frame, a frame hinge, a frame supporting roller, a curved surface heating plate, a curved surface heating plate installation positioning bolt, a frame driving gear ring and a forward and reversing motor. When a pipeline is heated locally or circumferentially, an operator drives the frame driving gear ring and the annular frame to rotate by controlling the forward and reversing motor, so that the positioning or directional shifting of the curved surface heating plate are controlled; and a gap between the curved surface heating plate and the pipeline is adjusted and fixed by adjusting the in and out of the curved surface heating plate installation positioning bolt. Compared with a method in which the shifting of a heating device is operated manually, the electrically controlled shifting method is simple and convenient, and saves labor and time.