| 摘要 |
PURPOSE: A tension control arm is provided to control the tension of an overhead transmission line in the ground by arranging a handle in a lower part of a pole. CONSTITUTION: A support frame(10) has a square pipe shape. The support frame is comprised of a fixing frame and a rotation frame. The fixing frame is fixed in the pole. The rotation frame is rotatably mounted on the fixing frame. A support axis(20) is arranged in one side of the rotation frame. A bracket(30) is rotatably combined in the support axis. A connection rod(40) is connected to the bracket. A screw axis(50) moves the rotation frame forward and backward by the rotation. A reducer(60) is connected to the screw axis. A handle(70) is rotatably mounted in the lower part of the pole. A chain connects the sprockets of the handle and the reducer. |
