| 摘要 |
An implement attachable to the lifting links of a tractor has at least one, preferably two, rows of tines fixed to respective transverse frame beams. Between the rows of fixed tines, a supporting roller is pivoted to the frame. The roller can be adjusted relative to the frame to regulate the working depth of the first row of tines. An elongated soil working member is connected to the rear tined beam by a parallelogram linkage and a drive transmission, including at least one eccentric, is connected to upwardly extending support standards to reciprocate the working member in up and down directions so that lumps of soil are crumbled and levelled. The parallelogram linkage is resiliently connected or associated with the frame by opposing springs that permit reciprocal movements of the working member relative to the rear row of tines. The eccentric can be meshed pinions in a housing that are rotated by a drive shaft and each pinion weighted to be out of phase with the other by 180 DEG . Various ground engaging bottoms can be detachably secured to a carrier depending on the soil condition and intended use.
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