| 摘要 |
A rotatable tiller apparatus for use in mixing soils in situ, including: (a) a vertically oriented rotatable drive shaft, connected to and driven by a motor external to the apparatus; (b) a drive assembly connected to the drive shaft; (c) at least two vertically oriented, rotatable cutting shafts connected to the drive shaft through the drive assembly and at least one support plate; (d) a sprocket assembly within the drive assembly connected to the drive shaft, the sprocket assembly comprising at least one rotatable sprocket for each cutting shaft; (e) a means of rotating the sprockets in a direction counter to the rotation of the drive shaft, the means being driven by the motor, the sprockets being rotatable in the same direction and at the same speed as one another; and (f) at least two tine assemblies arranged vertically in tandem along each of the cutting shafts, each tine assembly including at least one tine with at least one blade at its end.
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