Dual power transfer switch's automatic switching device

The utility model relates to a dual power transfer switch's automatic switching device, which comprises a housin, the intelligent control circuit board, tripper, tripper includes mechanism's frame, including a motor, an end cap, a controller, and a cover plate, the gear train, two conversion arms, drive gear commonly used and reserve drive gear, the gear train include with the motor on a worm engaged with drive gear, secondary drive gear with a transmission gear meshing, with the 3rd drive gear of secondary drive gear engaged with, fourth drive gear with the 3rd transmission gear meshing, drive gear commonly used meshes with the 3rd drive gear mutually, reserve drive gear and fourth drive gear mesh mutually, two the conversion arms one serve be provided with respectively with drive gear commonly used, reserve drive gear matched with cam, drive gear commonly used, be provided with respectively on the reserve drive gear with cam linkage complex lug, the utility model has the advantages of compact structure, hig