The invention discloses a novel three-column type insulation device. The novel three-column type insulation device comprises an insulation medium, a spiral welding shell, a spherical plastic ball bearing, a central conductive electrode, particle absorption devices, a positioning system, a conductive rod, a first insert and a second insert, wherein a whole three-column type insulator is formed by the first insert, the second insert and the central conductive electrode in an epoxy resin vacuum casting mode; the particle absorption devices are fixed on the first insert and the second insert on the three-column type insulator through a plurality of bolts; the positioning system is assembled on the second insert at the upper end of the three-column type insulator; the spherical plastic ball bearing is assembled on the second inserted on the top of the three-column type insulator and can be freely pushed into the spiral welding shell in a sliding manner; and the three-column type insulator is positioned in the spiral welding shell. By the novel three-column type insulation device, materials are saved, and the load capacity is improved; the novel three-column type insulation device is environment-friendly, and is high in flexibility and reliability, easy to assemble and repair and attractive in appearance; and the voltage tolerance strength of the insulator can be improved.