A hinge structure for well lid upset is 180 degrees

The utility model discloses a hinge structure for well lid upset is 180 degrees, including well frame, well lid, and be used for connecting the connecting piece of well frame and well lid, the connecting piece include with the first connecting piece of well frame articulated and with well lid articulated second connecting piece, first connecting piece passes through the articulated shaft with theone end of second connecting piece and articulates, first connecting piece all is provided with the round pin shaft hole with the other end of second connecting piece, and the both sides in the roundpin shaft hole are provided with two round pin axles, two departments respectively be provided with the spring between the round pin axle. The utility model has the advantages of simple structure andreasonable design, convenient to detach can used repeatedly, and stability is good, through being connected the connecting piece with well lid, well frame respectively, can realize that 180 upsets ofwell lid are opened, avoid t