COMBINED UNIT FOR PRIMARY AND PRE-SOWING SOIL TILLAGE WITH HYDRAULIC DRIVEN CUTTER Russian patent published in 2023 - IPC A01B49/02 

FIELD: agriculture.

SUBSTANCE: combined unit for primary and pre-sowing tillage with a hydraulically driven milling cutter (2) consists, in the direction of movement of the agricultural machine, of a cultivator (1) in the front part and a hydraulically driven milling cutter (2) in the rear part. The cultivator (1) consists of a frame (3), in the lower part of which the working elements (4) are fixed, and which contains in the front part a fastening (5) to an agricultural machine, and in the rear part - a fastening (8) to the mentioned milling cutter with hydraulic drive (2). The working bodies (4) are installed in a checkerboard pattern and are made in the form of replaceable cultivator paws with the possibility of installing replaceable flat-cut elements, and are located in the lower part of the racks (11). Replaceable flat-cut elements of replaceable cultivator paws are made in the form of paired ribs of their racks (11) of the right and left profile corners (17 and 18), symmetrical along the axis of symmetry, which are made with a bevel or chamfer between the vertical and horizontal shelves, secured by a vertical shelf along its flat side to the lower flat part of the racks (11) or in the form of flat-cut plates of symmetrical shape on the side of their flat part with inclined sides, and between which on the edge of the racks (11) a flat knife or chisel (22) is fixed, made in an arcuate shape on the side of its edge parts, such that the center of its largest arc is located at the bottom of the racks (11).

EFFECT: providing an expansion of operational capabilities, a reduction in the load on a hydraulically driven cutter, an increase in energy efficiency and vibration protection of the unit while simultaneously increasing its performance, fault tolerance and maintainability, as well as increasing the stability of the operation of an agricultural machine, expressed in increasing the productivity of use and fuel economy of the machine without reducing the rate of its operation.

20 cl, 9 dwg