| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lead-in wire support preventing disconnection, due to rocking by wind in an edge line part of a lead-in wire and charging to a messenger wire, and to provide an extension construction method for the lead-in wire, with which exchanging length of the lead-in wire is made short and material cost and cost of construction can be reduced. <P>SOLUTION: The lead-in wire support is provided with a support pole, a messenger wire sandwiching part which is arranged at one end of the pole and sandwiches an insulating part of an inter-column messenger wire, and an insulating lead-in wire through part which is detachably fixed to the other end of the support pole and supports an edge wire part of the lead-in wire suspended by the inter-column messenger wire. When one telegraph pole is moved to an extending direction of the lead-in wire suspended by the inter-column messenger wire, the lead-in wire is cut at a position close to a relay point, before relocation of the telegraph pole, one end of an added wire is connected to an end part of the lead-in wire; and the lead-in wire is supported by the insulating part of the messenger wire, at a part near the center of the columns, rather than at the end part of the lead-in wire by using the lead-in wire support. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
