DRILL Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: drill has fertilizer distributors arranged behind basin harrows before seed sowing mechanisms. Each basin harrow is kinematically coupled with fertilizer distributors and seed sowing mechanism by common intermediate shaft and reduction gear providing intermittent rotation of fertilizer distributors and seed sowing mechanisms and equalizing the torques on all basin harrows if one of the latter slips. Fertilizer distributors are mounted on bottom of common hopper which has agitator in form of auger; each fertilizer distributor is made in form of disk with variable-capacity pockets in form of half of segment enclosed in casing provided with needle inner coating. Disk of each seed sowing mechanism is made detachable and is furnished with replaceable ring with triangular-pyramidal cuts. Fitted on casing of each seed sowing mechanism are brushes. Hoppers for fertilizers and seeds are provided with hinge-connected partitions. Each working member of basin harrow is secured on its disk and can be removed, displaced and fixed in radial direction of disk. Each basin harrow is spring-loaded. Moreover, basin harrows and disks of fertilizer distributors and seed sowing mechanisms are displaced relative to each other through definite angles. Reduction gear is made in form of two Geneva cross mechanisms, each connected with corresponding driven shaft of fertilizer distributor or seed sowing mechanism and is furnished with clutch with protective arrangement for disconnecting the above-indicated shafts, and also replaceable pair of gears. Drill has soil tillage members and furrowers installed successively before basin harrows, and also furrow levellers in form of plates arranged after fertilizer distributors. Covering devices are made in form of pin members and roller sealers which are hinge-connected with frame and are spring-loaded relative to frame. EFFECT: enlarged operating capabilities. 11 cl, 9 dwg