Device and method for accurately positioning spherical hinge

Technical Field The present invention belongs to the horizontal swivel bridge construction, particularly relates to apparatus and method for precise positioning of the ball joint, the horizontal swivel construction solves the need to repeatedly adjusted at the ball joint is positioned, low efficiency, and poor accuracy. The same radius of spherical hinge precise positioning means comprises a locking portion, trimming means and a measuring portion sliding tray, a prism measurement portion includes a lower edge of the mounting of three spherical hinge line disposed along the vertical, three prism mounted on the lower ball joint edge circumferentially equilateral triangular arrangement. The method of accurate positioning of the ball joint, the ball joint to complete the accurate positioning means. The present invention has the following advantages: 1, simple and precise adjustment of the operation, for precise measurement and adjustment, high positioning accuracy; 2, rapid positioning, positioning of high efficiency, which can effectively speed up the construction schedule, a high efficiency characteristics.