100m long welded rail transporting rectangular scheme loading and strengthening device

The utility model discloses a 100m long welded rail transporting rectangular scheme loading and strengthening device comprising a first flatcar, a second flatcar, a third flatcar, a fourth flatcar, a fifth flatcar, a sixth flatcar and a seventh flatcar that are sequentially connected in series, wherein each of the first flatcar and the seventh flatcar is provided with a seat frame; each of the second flatcar, the third flatcar, the fourth flatcar, the fifth flatcar and the sixth flatcar is provided with two seat frames; each of the four seat frames of the third flatcar and the fourth flatcar is provided with a locking device; each seat frame is provided with a base girder and three crossbeams distributed in an upper, middle and lower layer manner; each of the base girder and the three crossbeams is provided with 14 steel rails; each layer of steel rails are locked through the locking device; weights are placed at first strut grooves at the outer ends of the first flatcar and the seventh flatcar; and two sides of each weight are provided with plug boards matched with the strut grooves. The device can improve the steel rail loading rate, and is safe in using.