DEVICE FOR SUBSURFACE TILLAGE Russian patent published in 2011 - IPC A01B13/00 

FIELD: agriculture.

SUBSTANCE: device comprises a chisel knife with a hollow cartridge. In the cartridge there is a shaft installed in bearings, with which a self-rotating mole-ripper is connected in the form of a multiple conical spiral. The mole-ripper is connected to the shaft by means of an elastic-flexible unit. The unit is made as a cylindrical spring with a limiter of its stretching arranged on it as a flexible element. Ends of the spring and the flexible element are fixed in nut couplings.

EFFECT: device design will make it possible to increase reliability of the device and to expand its functional capabilities.

4 cl, 3 dwg