METHOD AND DEVICE FOR CONDUCTING BENDING LOAD TEST ON ROD-SHAPED INSULATOR

摘要

PROBLEM TO BE SOLVED: To eliminate the need for placing a rod-shaped insulator upright using a crane and to enable a bending load test to be conducted efficiently by holding on a support stand a flanged part at one end of the rod-shaped insulator lying on its side, and applying a load perpendicular to the longitudinal direction of the rod-shaped insulator to a flanged part at the other end. ;SOLUTION: A rod-shaped insulator 20 is mounted on a sample base 6 placed at the center of a base 1, and a flanged metal fitting 25 at the lower part of the insulator 20 is held by a support stand 9. A flanged metal fitting 24 at the upper part (top) of the insulator 20 is placed on the lower jacking punch 3 of a hydraulic jack 2, and the punch 3 is raised to apply a predetermined load to the insulator 20. Next, the insulator 20 is rotated about its longitudinal axis by 90 degrees for each rotation, and a bending load test is conducted by applying the predetermined load to the insulator 20 from four directions. This method can greatly reduce the number of operations and enables the bending load test to be conducted easily at the installation site of the insulator 20, resulting in enhanced convenience and greatly reduced facility cost.;COPYRIGHT: (C)1997,JPO