Vertical-axis wind power speed increasing transmission device

The invention relates to a vertical-axis wind power speed increasing transmission device, which comprises a base I, a big gear ring, an open small gear, a box body, a speed increasing machine, a generator, a safety coupling, a gasket set, a gear coupling, a platform and a base II, wherein the base I is installed on the basis, the box body is installed on the base I, the open small gear is installed on the box body, the platform is located above the base I, the base II is installed on the platform, the speed increasing machine is installed on the base II, an input axis of the speed increasing machine is connected with the open small gear through the gear coupling, and the safety coupling is installed between the open small gear and the gear coupling. The vertical-axis wind power speed increasing transmission device has the beneficial effects that the height from a meshing force action line to the ground is shortened, and the overturning moment is reduced; the speed increasing machine is more reasonable in stress state, the service life of the speed increasing machine is prolonged, and the basis stress of the base I is reduced; gear coupling connection is convenient for maintenance, and radial deflection of a spindle head of the small gear can be compensated; and the safety coupling is independently installed between the small gear and the speed increasing machine, thereby enabling the safety coupling not to be directly affected by the meshing force of the small gear.