CONDUIT TESTING BODY AND CONDUIT TESTING METHOD

摘要

A conduit testing body having a structure in which spherical portions (11, 12, 13) are connected by bar-like portions (21, 22). Although the spherical portions (11, 12, 13) has a size close to the inner diameter of a conduit (50), they are less likely to interfere with the inner peripheral surface of the bent conduit (50) because sections between spherical portions are the bar-like portions (21, 22) that are thin. As a consequence, even if the outer diameter of the spherical portions (11, 12, 13), which are set along the inner surface of the conduit (50), is extremely close to the inner diameter of the conduit (50), the entire testing body (1) can be moved along a curvature of the conduit (50) which curvature is within an appropriate range. When the testing body (1) is pulled into the conduit (50), if the diameter of the spherical portions (11, 12, 13) is closer to the inner diameter of the conduit (50), the testing body (1) does not pass a portion where there is a step and stays more easily at the step. In a test for passing a wire to the conduit (50), curvature radius measurement and step detection at each point of the conduit (50) can be accurately performed, abnormal conditions can be reliably detected by simple work, and a trouble in actual cable drawing can be prevented.