FLEXIBLE-IMPACT HARROW Russian patent published in 2017 - IPC A01B21/02 A01B23/02 A01B31/00 

FIELD: agriculture.

SUBSTANCE: flexible-impact harrow contains a frame on which drag chains (3) with loosening elements (4) with the possibility of rotation are fixed with their ends (2), as well as tensioning (5) and adjustment (6) mechanisms of the drag chains (3), a cross bar with a hitch and support wheels, as well as two longitudinal bars having the hinged connection and a mechanism for regulating the soil cultivation depth by a drag chain (3), fixed by means of demountable connection. The rear transverse beam consists of the right (19) and the left (20) movable parts connected by the tensioning mechanism (5) having two telescopic bars (21) with locking bolts (22) and one outreach adjusting mechanism of the right (23) and the left (20) movable parts of the rear transverse beam. On the transverse beam, two longitudinal fasteners (25) of hubs (26) with additional clamping (27) and fixing (28) bolts, as well as with additional openings for adjusting the outreach mechanism of the hubs (26) are fixed by means of clamps (24). The loosening elements (4) of the drag chain (3) are located in the eyelet at an angle of 30° to each other and have round rings (8) of square section, which are interconnected by locks of circular cross-section. The locks consist of two end connecting elements, two intermediate ones, and the middle one. The intermediate elements and the middle element are interconnected by means of a bolted connection, and the two end elements are made in the form of plugs, the inner surface of which is made in the form of truncated hemispheres connected to other truncated hollow hemispheres of the intermediate elements by means of the threaded connection, with metal balls placed inside the hemispheres. The locks of circular cross-section are located with a displacement from the intersection center of the circular rings perpendicular to each other at a distance equal to two diameters of the opening for the bolt connection, and each eyelet fixed to the inner side of the drag chain ring (3) has two openings for fastening the loosening elements (4) and made with two bends. Each eyelet fixed to the inner side of the ring is made with two bends at an angle of 170°.

EFFECT: improving the cultivation quality of soil with varying density, increasing the operational reliability.

2 cl, 6 dwg