SPAN STRUCTURE SUPPORTING DEVICE

摘要

PURPOSE: A span structure supporting device is provided to support a span structure stably by corresponding to the multidirectional transformation of a span structure. CONSTITUTION: The span structure supporting device(20) contains a rolling support(21) formed on a device installation place and provided with many spherical grooves(23), many balls(25) placed in each spherical groove(23) in rolling contact with span structures, and many rollers(31) interposed between the ball(25) and the spherical groove(23) to support a ball(25) rotatively.