Old bridge is shallow -buried type bridge telescoping device for transformation

The utility model provides an old bridge is shallow -buried type bridge telescoping device for transformation, including the telescoping device main part, the telescoping device main part includes that a plurality of the pasts arrange the telescoping device unit of concatenation backward in proper order, every telescoping device unit is integrated into one piece, the telescoping device unit includes the bed plate, the buffering back, fixing bolt and spacing salient are rectangular, the bed plate is fixed along the fore -and -aft direction is disposed under the buffering back, the fixing bolt level is the fixed left side that sets up at the buffering back left, the rectangular level of spacing salient is the fixed right side that sets up at the buffering back right, the buffering back is the curve type back, the rectangular transverse section of spacing salient is the I shape section, the rectangular right -hand member of spacing salient is circular -arc terminal surface, fixing bolt'sleft end is connected wit