Rotary spherical hinge positioning apparatus on top of bridge pier

The utility model relates to a spherical hinge positioning device of a turning body, which is used for positioning turning bodies of bearing structures, such as bridges. The spherical hinge positioning device comprises a rotating shaft (9) located in the center of a pier top; a plurality of anchor rods (7) uniformly pre-buried in the pier top; a pre-buried cushion plate (6) arranged on the top parts of the anchor rods (7); a positioning angle iron (5) installed on the top part of the pre-buried cushion plate (6); a connection angle iron (4) arranged on the top part of the positioning angle iron (5); a stiffing plate (2) with one end arranged on the upper part connection angle iron through a position adjusting bolt (3), and the other end connected with the rotating shaft (9); and a lower half spherical hinge (1) fixed on the top part of the stiffing plate (2). The spherical hinge positioning device has the advantages of compact structure which can be adapted to the arrangement of reinforcing steel bars inside the top of piers, definite bearing force, accurate spherical hinge position, and higher stability and reliability.