Hydraulic engineering construction pipeline positioning device

The invention is suitable for the field of water conservancy project construction, and provides a water conservancy project construction pipeline positioning device which comprises a base and further comprises a driving mechanism connected with the base; an elastic limiting assembly is connected between the clamping mechanism and the driving mechanism; a pressing roller is arranged in the clamping mechanism, the pressing roller is connected with an elastic supporting mechanism, the elastic supporting mechanism is in sliding connection with the clamping mechanism, the clamping mechanism is rotationally connected with connecting rods, one end of each connecting rod is rotationally connected with a limiting roller, and the elastic supporting mechanism is rotationally connected with a cam. An elastic torsional spring is connected between the cam and the elastic supporting mechanism, and the cam is in sliding connection with the connecting rod. When the pipeline expands with heat and contracts with cold, the press