| 摘要 |
FIELD: agricultural engineering, in particular, equipment for grain combine threshing apparatuses. ^ SUBSTANCE: roll-free drum is composed of two pins equipped with disks attached thereto by electric arc welding process. Disks have concave plate-like shape and are facing toward one another. Whip holders with whips are welded to outer disk diameters. One of pins has pulley drive arranged at its free end. Two apertures provided at end of other pin are adapted for manual rotation of drum. ^ EFFECT: reduced metal usage and increased efficiency. ^ 4 dwg |
