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1. 发明专利

JPH1056714A CABLE TENSION DETECTING DEVICE 失效
公开(公告)号：JPH1056714A
公开(公告)日：1998-02-24
申请号：JP21119496
申请日：1996-08-09
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： GENNO SHUICHI , TERASAWA MASAO , FURUMIYA TADASHI , HOSODA HIROSHI , SANO SEIICHIRO
IPC分类号： G01L5/06 , H02G1/06
摘要： PROBLEM TO BE SOLVED: To make a cable tension detecting device used for detecting the tension of an optical fiber cable, etc., usable even in a small manhole and, at the same time, to make the device easily mountable by forming the cable connecting section of the detector so that it cannot be caught by inserting metal fittings when the section is passed through the parts and reducing the total length of the device. SOLUTION: When a pressing bolt 27 is screwed in an insert holding section, pressing metal fittings 24 receive an upward vertical force through a see-saw member 25 and are fixed to the inner peripheral surface of a conduit 22 in a state where the member 25 is pressed against the inner peripheral surface and, at the same time, upper inserting metal fittings 17 are concentrically fixed and held in the conduit 22. Because of the pressing force of the bolt 27, the whole bodies of upper and lower inserting metallic parts are strongly pressed against the inner peripheral surface of the conduit 22 and firmly attached and fixed to the inner peripheral surface by a downward vertical force. In addition, the front end section of the lower inserting metal fittings 19 is bent outward along the mouth of the conduit 22 and formed in a notched shape having no projecting section protruded toward the center of a manhole. Therefore, the total length of a cable tension detecting device is reduced and the tension detecting section of the device is brought nearer to the mouth of the conduit 22.

2. 发明专利

JPH0949952A CABLE TRACTION DEVICE 失效
公开(公告)号：JPH0949952A
公开(公告)日：1997-02-18
申请号：JP19963695
申请日：1995-08-04
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： IMAI MICHITAKA , HIRAI NORIHITO , HANDA AYUMI , HOSODA HIROSHI , SANO SEIICHIRO
IPC分类号： G02B6/46 , B65H51/14 , G02B6/44 , H02G1/02
摘要： PROBLEM TO BE SOLVED: To provide a cable traction device with which a large traction force is obtainable and which allows the passage of different diameter parts, such as junctures of a cable and a traction rope, without adjustment. SOLUTION: This cable traction device is constituted by arranging a second cable delivery section 22 which is formed by winding an endless belt 27 stretched over freely rotatably arranged driven rollers 25 and idle rollers 26 below a first cable delivery section 12 in which a driving roller 17, a driven roller 18 and intermediate rollers 19 are freely rotatably arranged in an arc shape having a radius of curvature above the permissible radius of curvature of the cable and an endless belt 15 for driving is stretched thereon. The device is so constituted that the cable 20 is held between these two sections. The second cable delivery section 22 is constituted vertically movably and is kept pressed and energized perpendicularly upward by torsion coil springs 42.

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