Study On Stress Analysis Method Of Suspension Clamp Outlet

fiber suspension clamp The ratio of the radius of curvature R to the conductor diameter D determines the bending stress σ_b. The empirical formula σ_b=ED/(2R) shows that when R decreases from 300mm to 250mm, the bending stress increases by 20%. In a ±800kV UHV project, finite element analysis was used to find that the hardness of the lining rubber cushion of cable suspension clamp was adjusted from Shore 70A to 60A, which can reduce the peak contact stress of the conductor by 34%.
Material properties have a significant impact on stress distribution. The difference between the elastic modulus of aerial cable suspension clamps (69GPa) and the 72GPa of ZL102 cast aluminum leads to a strain difference of 4.2% under the same load. In a 220kV line reconstruction project, the traditional cast iron angle suspension clamp was replaced with a forged aluminum alloy material, and the 0.8mm thick EPDM rubber protective wire was used to reduce the dynamic bending strain of the conductor at the harga suspension clamp outlet from 650με to 420με, a decrease of 35.4%. Through three-dimensional laser scanning measurement, it was found that when the tolerance of the curvature radius of the optimized messenger suspension clamp saddle was controlled at ±0.05mm, the stress concentration factor Kt value of suspension clamp with i hook was reduced from 2.8 to 2.1.