Environment-friendly natural gas pipe cut-off device

The utility model relates to the technical field of natural gas pipe installation accessory devices, in particular to an environment-friendly natural gas pipe cut-off device which can cut off naturalgas pipes on a large scale, improve the working efficiency and improve the safety coefficient. The device comprises a workbench, a door-shaped plate, an upper clamping plate, a lower clamping plate, afront threaded rod, a rear threaded rod, a rear rotating shaft, a left rotating shaft, a right rotating shaft, two sets of sliding rods, a fixing rod, a left supporting rod, a right supporting rod, afront rotating disc, a rear rotating disc and an adjusting block. The two ends of the door-shaped plate are connected with the rear half area of the top side wall of the workbench. Two groups of sliding holes are respectively formed in the left half area and the right half area of the door-shaped plate; and the bottom ends of the two sets of sliding rods penetrate through the two sets of slidingholes correspondingly and th