The utility model relates to an earth connection operating equipment especially relates to an encircle supplementary equipment that articulates of type earth connection. Including mesa device, elevating gear and fixing device, the mesa device includes base frame, guardrail, locating piece, balancing weight and universal wheel, and elevating gear sets up at the base frame center, and elevating gearincludes foundation, upper cover and holding screw, and fixing device includes first solid fixed ring, the solid fixed ring of second, the solid fixed ring of third and locking mechanism, first solidfixed ring, the solid fixed ring of second and the solid fixed ring of third are all and the upper cover links to each other and mutually between the distance equal. The utility model discloses haveand singlely can accomplish hanging of earth connection safe, conveniently and establish, can fix the three -phase ground wire in advance on red -tape operation equipment, the staircase beneficial effect such as ground wire that take about need not to relapse.