Directional device of photoelectric tracker installed on naval gun bracket

The invention discloses a directional device of a photoelectric tracker installed on a naval gun bracket. The directional device comprises a fixed part, a rotary part, a plurality of bearings, a torque motor and a rotary transformer, wherein the fixed part comprises a directional base, an inner bearing base and a bearing transfer base; the rotary part comprises a directional shaft and a directional connection disc; the plurality of bearings are connected between the fixed part and the rotary part; the inner bearing base and the directional shaft are connected through an angular contact ball bearing and a deep groove ball bearing; the inner bearing base is installed in the directional base; the directional connection disc and the bearing transfer base are respectively and fixedly connected at the upper ends of the directional shaft and the directional base; and an outer supporting bearing with larger outside diameter is arranged between the directional connection disc and the bearing transfer base. The directional device disclosed by the invention is not only capable of shortening axial size and increasing transverse support rigidity and bending resistance capability of the photoelectric tracker but also capable of improving the capability of resisting swing, inclination and transverse punching vibration of the photoelectric tracker; meanwhile, the directional device has the characteristics of simple structure, small volume, light weight, high reliability and good control property; furthermore, the directional device can be popularized and used for other similar tracking equipment with a plurality of carriers or installation positions.