| 摘要 |
PCT No. PCT/GB81/00258 Sec. 371 Date Aug. 2, 1982 Sec. 102(e) Date Aug. 2, 1982 PCT Filed Nov. 25, 1981 PCT Pub. No. WO82/01805 PCT Pub. Date Jun. 10, 1982.A combine harvester of the type having a crop elevator 9, 10, 11 that feeds crop upwards across a crop floor 11 to a crop threshing mechanism comprising a threshing cylinder 1 located adjacent a concave threshing grate 13 and driven to thresh crop fed tangentially between the cylinder and grating, a crop conveyor 14 in the form of a roller or continuous band conveyor being located along the leading edge of the grate 13 with respect to the crop feed direction so that crop passes over it to the cylinder and grating and a changeable speed drive mechanism being provided to drive the conveyor 14 and allow its speed to be changed, thereby to control the speed of crop flow. The crop elevator 9, 10, 11 is supported to pivot about the axis of the cylinder 1 to raise and lower a crop collecting table 2 carried at the bottom of the elevator, the conveyor 14 being located between the upper end of the elevator floor 11 and the leading edge of the grate 13 so as to form a substantially continuous crop flow path with said floor and grate. The grate 13 and conveyor 14 are mounted so as to pivot with the elevator 11 about the axis of the cylinder 1. A crop guide flap 15 is provided adjacent the conveyor 14 to vary the angle at which the crop is fed to the cylinder 1. |
