| 摘要 |
A bar connection of a single grid cover includes tubular rods cut at the ends at angle, end angle elements with openings, sheet pads with trapezium-like shapes, those are welded to the tubular rods, mounting bolts that connect the end angular elements. Additionally rectangular plates with openings are included, those are welded at the side of the sheet pads with trapezium-like form to the tubular rods to which by means of rectangular plates and additional mounting bolts support arc-like rigidity ribs are connected. The shape of cross section of the tubular rods is arranged as a rectangle that is placed with its larger side by direction of normal to the surface of cover, and the sheet pads in trapezium-like form are welded to the rib of the ledge of the end angle elements along the whole lengths of those. |
