This special machine is different from what we usually talk about and see the rotary tiller, these differences mainly in the working principle. The special rotary tiller is specially designed for the operation of the shed. It solves the problem that the space in the shed is small, the obstacle is large and the corner can not be cultivated. It has the characteristics of light weight, small volume, simple and convenient operation and no Emissions of toxic gases. Specific to the rotary tiller design principles, including the following two points. First, the power by the motor output, through the belt drive to the gearbox, after deceleration through the chain drive to the rotary knife axis, where the gearbox can be changed to pulley deceleration, in the middle to increase a resistance shovel, this can be effective Reduce the physical consumption of staff, is a very user-friendly design. Second, the power from the engine output, through the pulley drive to the input shaft of the gearbox, and then to the knife shaft, the transmission part is composed of sprocket, gearbox and pulley. The main part of the work is a rotating blade, it can be on the soil from the top down cutting, and thrown to the rear, so as to achieve loose soil fertility effect.