| 摘要 |
An arm of an extra high voltage line fixed at a tower is provided to support an insulator and a transmission line stably for a long time by supplementing the durability of the arm body according to the time elapse. A first support(100) is inserted to a pylon. A first support has a first mounting groove and a first fixing protrusion. An arm body(200) is rotatably mounted in a first support by a first bearing. The arm body has a pair of platforms and a pair of fixing units. The transmission line is fixed in the pair of platforms by an insulator. A second support(300) is mounted in the upper part of the arm body by a second bearing. A second support has a second mounting groove and a second fixing protrusion. A fixing unit(400) passes through first to third coupling holes successively. The fixing unit prevents the rotation of the arm body. An arm body support(500) has a band part and a support. |
