| 摘要 |
PURPOSE:To obviate the inconvenience on the transport and drawing of a main line cable, to enhance the efficiency of cable laying work and to ensure cable laying by vertically arranging the main line cable so that its branch line may be of upward branch and by suspending the above branch line to a supporting means on the floor situated each branch section above. CONSTITUTION:A main line cable 1 consisting three cables 1a, 1b and 1c is put together with a cable grip 5 at its topmost section and is suspended to a ceiling 4 with a guide rope. In drawing the cable, a branch line 3 is lightly bound to the main line cable 1. At that moment, as the branch line 3 is directed upward, suspension work is performed by a supporting base 9 on a floor 8 situated high above the branch sections 2a, 2b and 2c. Without the inconvenience in transport and drawing the cable can simply and surely be laid in this way which can withstand a long time use. |
