有工字钢柱及横梁等组成，它是电缆从配电室出线后垂直引上或引下同桥架连接的装置，与立柱接头配合使用。
Composed of H-girder column ,beams,ect,vertical up-leading frame is used with column Couplings toconnect the cable leading up or down vertically after leaving switch house to cable trays.