Hoist

The utility model discloses a hoist. The utility model relates to a rotary cultivator which comprises a machine base, a shell, a first driving device and a second driving device. A planet wheel set composed of a sun wheel, planet wheels, a planet carrier, an annular gear ring and a first gear is arranged in the shell. The first driving device is fixedly connected with the sun gear through a firstrotating shaft; the second driving device is fixedly connected with the first gear through a second rotating shaft; the sun gear and the annular gear ring rotate in the same direction; the planet carrier is connected with a differential winding drum through a third rotating shaft; a steel wire rope is wound on the outer wall of the differential drum; a steel wire rope hole is formed in the base below the differential drum; the first driving device and the second driving device jointly provide power for the hoist, when one of the first driving device and the second driving device is damaged, the hoist can still work no