Elevator driving device

The utility model discloses a hoister driving device, which belongs to the technical field of mine hoisting and transporting equipment and comprises a winch underframe, a motor, a speed reducer, a pinion component, a bull gear component and a roller. The output end of the speed reducer is in transmission connection with the pinion assembly; the pinion assembly comprises a pinion shaft and a pinion; the bull gear assembly comprises a bull gear shaft and a bull gear, and the bull gear is meshed with the pinion; the roller is connected with the large gear shaft, a plurality of circles of steel wire ropes are wound on the roller, and two ends of the steel wire ropes are respectively connected with a load and a balance car. The steel wire rope is wound on the roller for multiple circles, the attaching area of the steel wire rope and the roller can be greatly increased, the relative friction force of the steel wire rope and the roller is increased, slipping of the steel wire rope is avoided, and use safety and reli