Mechanical and electromagnetic locking conversion device for direction frame of two-axis stable tracking platform

The invention provides a mechanical and electromagnetic locking conversion device for a direction frame of a two-axis stable tracking platform. The device is composed of a gear shifting adjustment part, a mechanical locking part, an electromagnetic locking part, a circumference rotary table part and a connection locking part. A multipurpose knob is pulled and pressed vertically and rotates circumferentially to finish adjusting three gears which are the free-running operation gear, the mechanical locking gear and the electromagnetic device locking gear, combination integration of mechanical locking and electromagnetic locking of the direction frame of the two-axis stable tracking platform is achieved, and manual mechanical locking and automatic electronic locking can be carried out on the direction frame. The diversity of function combinations is achieved by means of the structure, and the device is convenient to use, reliable and suitable for the stable platform requiring the multiple locking functions.