RIDGING UNIT Russian patent published in 2000 - IPC

FIELD: agriculture, in particular, ridging equipment used in greenhouses. SUBSTANCE: ridging unit has transverse plate positioned so as to be rotated in reciprocating mode by means of three levers including two flat three-armed L-shaped levers and one double-armed lever positioned between three-armed levers. Two pairs of auger-type cutters are positioned in recesses made in front side of transverse plate. Pairs of cutters are arranged for engagement with curved grooves to define equally spaced channels in cutter conical surface. Leaves are positioned for reversal rotation on outer sides of paired cutters. All leaves are kinematically pivotally connected to leaves rotating drive through leverage system having double-armed levers pivotally arranged in alignment one with respect to the other and transverse screw pair arranged between adjacent leaves. Transverse arm of each three-armed lever is extending along arced path of radius equal to distance to lever rotation axis. Spindles are formed as rimmed pins engaged with helical sleeves through spindle-and-screw joint. One of sleeves is attached to radial sector and other sleeve is secured to plated side pole mounted on chassis. T-shaped bosses are inserted into T-shaped slots arranged along arced path of plated poles to provide rotation of arced lever and radial sector. Helical sleeves are kinematically joined to control handle for controlling position of transverse plate by succession of chain transmissions. Soil tillers are attached to underside of transverse plate. EFFECT: wider operational capabilities and increased efficiency. 6 cl, 19 dwg