Cambered sliding block type universal coupling

The utility model relates to a cambered sliding block type universal coupling, comprising a left shaft, a connector and a right shaft; the connector is of a sphere structure; a cambered groove is formed on the connector; a cambered sliding rail is arranged in the cambered groove; a cambered baffle for installation of the left shaft and the right shaft is arranged at one end of the cambered groove; the cambered baffle is fixed by means of bolts; the left shaft and the right shaft are connected by means of the mutual sliding of the cambered sliding rail and a cambered sliding chute on a first connecting end; a second connecting end for connecting with the next coupling is arranged at the left side of the left shaft; a first screw hole is formed on the second connecting end; a third connecting end matching with the second connecting end is arranged at the right side of the right shaft; and a second screw hole matching with the first screw hole is formed on the third connecting end. The cambered sliding block type universal coupling is rational in structure, high in structural strength and easy in installation, does not occupy excessive space and effectively solves the problem of short motion transmission distance of a universal shaft.