Joint for connecting two extended nail sections

Abstract

The term "sang che" refers to a floating joint connecting the foundation components of a truss, providing an adjustable angle between the axes of the corresponding components. The long, dome-shaped joint with three grooves surrounding its outer surface allows the components to compensate for axial misalignment of the anchor bolts driven into the ground in any direction. A hydraulic edge folding device with upper and lower edge folding guide details engages its position via teeth on the truss frame to ensure consistent edge folding each time.