One-way bearing gear mechanism for helicopter

The utility model discloses a one-way bearing gear mechanism for a helicopter, and relates to the technical field of one-way bearing gears, the one-way bearing gear mechanism comprises a fixed box body, the inner wall of the fixed box body is fixedly and rotatably connected with a rotating shaft rod, and the surface of the rotating shaft rod is fixedly sleeved with a driving gear. The one-way bearing gear mechanism for the helicopter comprises a fixed box body, a fixed box is detachably installed on the inner wall of the fixed box body, a filter screen is detachably installed in the fixed box, a sponge cushion layer is attached to the bottom end of the filter screen, and a fixed bottom plate is fixedly connected to the bottom end of the fixed box. By arranging a filter screen, an oil inlet, sponge cushion layers and a fixing box, lubricating oil liquid is filtered by the filter screen, then immerses into the sponge cushion layers, then penetrates through the sponge cushion layers and infiltrates the surface o