| 摘要 |
<p>PURPOSE:To improve workability by computing the length of a jumper in consideration of both rigidity of a catenary and a jumper line by the gravity of the jumper line and forming the jumper accurately at a time. CONSTITUTION:The clamping coordinates of two clamping points Q are acquired from conditions such as the insulator-string support point coordinates of support points P, where insulator strings 1 are supported to a steel tower arm 2, the length, weight, catenary angle alpha, horizontal angle of the insulator string 1, etc. The length (L1) of a jumper line required when it is assumed that a section between these clamping points Q is tied by the jumper line by drawing a catenary curve determined by gravity is obtained. The depth (d) of the jumper is calculated so as to coincide with stipulations at that time. It is assumed that the clamping points Q are tied by the jumper line by drawing a spline curve determined only by the rigidity of the jumper line, and the length (L2) of the jumper line is acquired. Length L1 and L2 is divided proportionally by a coefficient kappa decided in response to the value of d/S when a section between jumper diameters is represented by S, and actual length is computed.</p> |
