| 摘要 |
FIELD: agriculture.SUBSTANCE: invention relates to agricultural machinery industry and can be used in the construction of a grain combine harvester. The cleaner of grain combine harvester comprises a shaker pan, upper and lower lipped screens, upper and lower sieve pan and a ventilator. The upper sieve pan has nonadjustable guide boards, and the lower sieve pan has guide boards adjustable in tilt angle. Width of the guide boards is equal to the distance between the longitudinal spacers of upper and lower lipped screens. When direct combining the guide boards are installed on the upper and lower sieve pans on the edges of cleaning of the grain combine harvester, and at pickup of rolls - in the central part of the cleaner.EFFECT: device enables to redistribute airflow over the upper and lower lipped screens of the cleaner in the most loaded part of cleaning of the grain combine harvester and to reduce grain losses.3 dwg |
