发明名称 |
MESSENGER ROPE STRETCHING DEVICE FOR IN-TUBE CABLE AND TOOL USED THEREFOR |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a messenger rope stretching device capable of laying an optical fiber cable without operating a tension by stretching a messenger rope latched by engaging the cable in a sewage duct. <P>SOLUTION: The messenger rope stretching device holds the messenger rope 10 loaded by a tension in a stretched state when the optical fiber cable 20 is laid in an upper part in the sewage duct. The device comprises a hanging fitting 8 provided on a straight wall of one manhole to lock the one end of the rope 10, a reverse running preventing unit having a pawl 31 for preventing the rope from reverely running by fixing to the wall of the other manhole 1 so as to hold the other end of the rope, and guide members 11, 12 for guiding the rope 10 to upper edge 9 of bumping opening to the manhole 1 and a sewage main duct 6 toward the fitment 8 and the unit 15. <P>COPYRIGHT: (C)2003,JPO</p> |
申请公布号 |
JP2003248155(A) |
申请公布日期 |
2003.09.05 |
申请号 |
JP20020050153 |
申请日期 |
2002.02.26 |
申请人 |
SANKI ENG CO LTD;ASHIMORI IND CO LTD;ASHIMORI ENGINEERING CO LTD |
发明人 |
MAKI TAKEHITO;OISHI NAOYUKI;YACHI TAKESHI;AZUMA KATSUHIKO |
分类号 |
E03F3/04;G02B6/46;H02G1/06;(IPC1-7):G02B6/46 |
主分类号 |
E03F3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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