FIELD: agriculture; machine building.
SUBSTANCE: invention relates to the agricultural machine building. Rotary hinged mower cutting bar comprises all-welded rectangular cross-section bar with bevel gear and, at least, four cutting rotors. Rotation of rotors is carried out in pairs towards each other by means of drive wedge belt 13 from pulley 11 of reduction gear in series on pulley 12 of each rotor. Drive wedge belt 13 in the gap between the reduction gear and the first rotor and in the gaps between the next rotors is turned in the horizontal plane by 180°. Near the intersection points of belt 13 in the holes there are identical cups 17 with rollers installed by their outer diameters on the inner surface of driven branch 15 of this belt to facilitate counter movement of driving 14 and driven 15 branches of belt 13 without contact with each other.
EFFECT: belt drive of the mower increases the transmitted power from the bevel gear to the rotors.
1 cl, 7 dwg
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