| 摘要 |
PURPOSE:To contrive prevention of a trolley wire from wearing partially by facilitating precise incorporation without applying welding process, by connecting a pair of messenger wires having a U-shaped cross section obtained by unifying a T-shaped frame bed of a rigid messenger wire for an electric overhead line and the electric overhead line with each other by tying the messenger wires in a confronting state by placing a block between the two. CONSTITUTION:As for a complex messenger wire, a pair of rigid messenger wires A and B is unified by inserting a block 4 between both A and B combined by making rectangular notches confronting with each other. The block 4 is a rectangular parallelepiped which is capable of fitting in the confronting rectangular notches of the messenger wires A and B in a close adherence state and the wires A and B are secured with each other by penetrating a headless bolt 5 through holes of leg sides of the wires A and B tightening it with a nut 6. At that time, the wires A and B are arranged so that the edges of them are arranged alternately in a longitudinal direction with each other and the edge of one side comes to the center of the other side. Then, confronting rigid wires are positioned through fitting in the block, acquirement of preciseness of a connecting part is facilitated and partial wear and tear resulting from hardening of a trolley wire due to welding to the same can be avoided. |
