MECHANISM FOR ADJUSTING APPROACH ANGLE OF TILLAGE WHEELS Russian patent published in 2017 - IPC A01B23/00 A01B63/32 A01B21/08 

FIELD: agriculture.

SUBSTANCE: mechanism for adjusting the approach angle of tillage wheels is made in the form of rigid links connected with arms, equipped with a device, for example, a lanyard, to move the links and turn the racks with the wheels. The wheels are arranged in a row on the hinged central section and side sections of the frame, connected by hinges and hydraulic cylinders. The rigid links of the whole row of the wheel working elements on the frame sections are connected by flexible links uniting all the links into a thrust common for the row. The axes of the hinges for fixing the flexible thrust links and the hinges for connecting the sections at their installation in the same plane are located on the same line. The hinge axes for fastening the flexible links on the rigid thrust ink to the central section are arranged between the axes of the rotation hinges of the side frame sections, or one of the axes of the hinges of the flexible links coincides with the rotation axis of the side frame section at the extreme thrust position. A movement device of the thrust common for the row is mounted on the side section of the frame on the side which the row of wheels faces with the sphere concavity, and is connected to the rigid thrust link in this section, and the rigid link of the same thrust on the other side section of the frame is equipped with a spring with the device of its deformation fixed on this frame section. The hinge axes of the flexible links located on the thrust links on the side sections of the frame are located outside the section between the connection hinge axes of the central section and the side sections of the frame. The device for spring deformation, for example its tension, is made in the form of a screw mechanism fixed to the side section of the frame and a hydraulic cylinder, the body or a rod of which is connected to the rigid thrust link.

EFFECT: improvement of the mechanism.

3 cl, 3 dwg