UNIT FOR SUBSURFACE TILLAGE Russian patent published in 2013 - IPC A01B13/08 A01B39/22 A01B49/02 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of agricultural machinery industry, in particular to devices for overall subsurface tillage. The device comprises racks rippers attached to them and removable A-hoes. The racks are made of step-wise bent pipes with three joints. The first joint is bent at an angle of 45°, the second at an angle of 30°, the third at an angle of 10-13° to the horizon. The lower end of the rack has a cut at an angle of 25° and is covered with a welded base. At the rear part of the lower end of the rack two triangular plates with holes are welded. The lower edges of the plates are installed parallel to the third joint. The A-hoes are made with a plate bracket with the hole which is welded to the front part. The A-hoes are attached by bolted connection to the triangular plates. The rippers are made in the form of elliptical chisels. The chisels are attached to the base by the screw connection.

EFFECT: invention enables to reduce energy costs, simplify design and improve reliability of the hoes mounting system.