| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the tilting of the yoke of a jumper device for overhead transmission line having horizontal angle to which a supporting lever that supports a rigid jumper at the vicinities of both ends is fitted. SOLUTION: A main transmission line is anchored to a strain tower through anchor clamps, yokes 5, tension insulator strings, etc., on both sides of the strain tower. The upper section of supporting levers 10 are connected to supporting lever fixtures 26 which are fixed to the lower surfaces of the yokes 5. The lower end sections of the levers 10 horizontally support the rigid jumper sections of a jumper line on both sides of the strain tower. Each fixture 26 has supporting connecting holes 26c not only at the center of the fixture 26 in the protruding direction (lateral direction in the figure) of the arm of the strain tower, but also at positions which are deviated from the center in the protruding direction of the arm. When the transmission line has a horizontal angle, the yokes 5 normally tilt, but, when the levers 10 are connected to one of the connecting holes 26c at appropriate positions, the yokes 5 are balanced with the loads from the levers 10 supporting the rigid jumper section and the titling of the yokes 5 can be prevented.</p> |
