Corrosion-resistant insulation board cutting device for heat supply pipeline

The utility model relates to the technical field of heat supply pipe heat preservation plate cutting, and discloses a corrosion-resistant heat preservation plate cutting device for a heat supply pipeline, through cooperative use of a moving motor, a one-way threaded rod and a threaded block, the threaded block drives an electric telescopic rod, a cutting motor, a cutting knife and a telescopic sealing box to move to the position above the cutting position; then an electric telescopic rod pushes a cutting motor to drive a cutting knife and a telescopic sealing box to move downwards, the telescopic sealing box moves downwards to form a sealed space with the insulation board, and then the cutting motor drives the cutting knife to rotate to cut the insulation board; meanwhile, a cutting motor is used in cooperation with a power gear, a second auxiliary gear, an auxiliary rotating rod, a first auxiliary gear, a second auxiliary gear, a main rotating rod, a first auxiliary gear, a main gear and a fan, so that the f