STRINGING WHEEL

PURPOSE:To reduce bending stress to be applied onto a joint by employing such structure as a pair of inlet and outlet supporting members are coupled in four joint link through upper and lower coupling members thereby reducing resistance intruding into the joint. CONSTITUTION:Upper and lower coupling members 3, 4 are coupled in four joint link through supporting members 2i, 2theta and corresponding corners 10i, 10theta of the supporting members 2i, 2theta and the upper coupling member are off set upward by a predetermined distance from the centers of the supporting members 2i, 2theta. Consequently, the upper side directs upward when the same load is applied onto the wheels 5b, 5c thus realizing a state conforming to the catenary of wire C as shown on Fig (a). When a joint section passes through, load receiving points deform as shown on Fig (b)-(f) because of a rigid anchor clamp P and the four joint link structure deforms sequentially, thus preventing application of large bending stress onto the anchor clamp P.