JPS5460495A - Method of installing anti-sag electric wire - Google Patents

Method of installing anti-sag electric wire

Info

Publication number
JPS5460495A
JPS5460495A JP12702177A JP12702177A JPS5460495A JP S5460495 A JPS5460495 A JP S5460495A JP 12702177 A JP12702177 A JP 12702177A JP 12702177 A JP12702177 A JP 12702177A JP S5460495 A JPS5460495 A JP S5460495A
Authority
JP
Japan
Prior art keywords
rolls
steel core
sag
electric wire
external pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12702177A
Other languages
Japanese (ja)
Other versions
JPS5653922B2 (en
Inventor
Hiroyuki Hoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP12702177A priority Critical patent/JPS5460495A/en
Publication of JPS5460495A publication Critical patent/JPS5460495A/en
Publication of JPS5653922B2 publication Critical patent/JPS5653922B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To increase the capacity of a transmission line through control of sag at a high temperature with a simple method by reducing diameter of a closely twisted steel core alminium strand by a specified amount under a external pressure applied by a roll after installed stretched.
CONSTITUTION: An external pressure is applied by rolls 1 and 2 so as to reduce the diameter of a closely twisted steel core aluminium strand W by 1 to 5 percent. For example, after the end of installation, rolls 1 and 2 are mounted on the electric wire W and an external pressure is applied from the circumference thereof adjusting a wheel 3. Under such a condition, a motor M serving as a drive source of the rolls 1 and 2 is driven so that the rolls run to the subsequent steel tower while the diameter of the electric wire is reduced in the span. With such an arrangement, the alumunium strand layer W2 alone is plastically deformed to preduce a slight clearance with the steel core W1. In this manner, only the steel core bears a tension caused when temperature rises and thus, the increase in the sag can be checked
COPYRIGHT: (C)1979,JPO&Japio
JP12702177A 1977-10-21 1977-10-21 Method of installing anti-sag electric wire Granted JPS5460495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12702177A JPS5460495A (en) 1977-10-21 1977-10-21 Method of installing anti-sag electric wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12702177A JPS5460495A (en) 1977-10-21 1977-10-21 Method of installing anti-sag electric wire

Publications (2)

Publication Number Publication Date
JPS5460495A true JPS5460495A (en) 1979-05-15
JPS5653922B2 JPS5653922B2 (en) 1981-12-22

Family

ID=14949714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12702177A Granted JPS5460495A (en) 1977-10-21 1977-10-21 Method of installing anti-sag electric wire

Country Status (1)

Country Link
JP (1) JPS5460495A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008532241A (en) * 2005-03-11 2008-08-14 エルエス ケーブル リミテッド Gap-type overhead electric wire and method for manufacturing the same
CN107856752A (en) * 2017-11-10 2018-03-30 孙哲涛 Walking clipping mechanism for high voltage cable crusing robot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008532241A (en) * 2005-03-11 2008-08-14 エルエス ケーブル リミテッド Gap-type overhead electric wire and method for manufacturing the same
CN107856752A (en) * 2017-11-10 2018-03-30 孙哲涛 Walking clipping mechanism for high voltage cable crusing robot

Also Published As

Publication number Publication date
JPS5653922B2 (en) 1981-12-22

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