Robot fixing base device

The invention relates to a mechanical supporting device capable of realizing multi-degree-of-freedom, and relates to a robot fixing base device which comprises a base bracket arranged on a pedestal; a chassis is arranged on a mounting station of the base bracket; a mounting base is mounted on the chassis; a first supporting rod is rotatably connected on the mounting base; the upper end of the first supporting rod is equipped with a connecting base; a second supporting rod is rotatably connected on the connecting base; the upper end part of the second supporting rod is rotatably equipped with a connecting rod; one end of the base bracket is equipped with a first limiting frame; the other end of the base bracket is equipped with a third limiting frame; and a second limiting frame is arranged between the first limiting frame and the third limiting frame. The mechanical supporting device is simple and reasonable in product structure, is connected through multiple joints and can realize multi-degree-of-freedom motion; and after being connected through multiple joints, the robot fixing base device is relatively great in length, and can realize a relatively wide working range.