Pipeline fixing device for water supply engineering

The utility model belongs to the technical field of pipeline laying, and solves the problems that an existing pipeline supporting piece is basically supported by a single leg, the supporting stability is low, and the stress point is single. The pipeline fixing device for the water supply engineering comprises an arc-shaped supporting plate, arc-shaped clamping plates, a main supporting leg and an auxiliary supporting leg, the two ends of the arc-shaped supporting plate are each rotationally connected with one arc-shaped clamping plate, the two arc-shaped clamping plates can be fixed through bolts, and the two arc-shaped clamping plates and the arc-shaped supporting plate form a space used for containing a pipeline; the main supporting leg is fixedly connected to the lower end of the arc-shaped supporting plate and axially sleeved with a sliding sleeve, the two auxiliary supporting legs are rotationally connected to the two sides of the lower portion of the arc-shaped supporting plate and are adjustable in len