| 摘要 |
A tractor drawn and powered impeller mower-conditioner includes a transverse cutter bar comprising a series of pairs of side-by-side contra-rotating cutting disks. An impeller rotor with free swinging flails is mounted above and slightly to the rear of the cutter bar with its axis of rotation parallel to the cutter bar. A hood over the rotor includes a confining forward conditioning plate conforming fairly closely to the rotor periphery to form a conditioning zone and a rearwardly extending deflecting and windrow forming portion. The rotor is disposed and rotated so that the flails intercept cut material delivered rearwardly by the cutter bar and carry it, inside the hood, up and over the rotor through the conditioning zone to be discharged rearwardly into a windrow. The flow of cut material from each pair of disks tends to be concentrated into a rearwardly directed stream by the bite or convergence of the contra-rotating disks. The distribution of flails on the rotor is locally concentrated so that a center of flail concentration is longitudinally aligned with each concentration of material flow so that all material received by the rotor gets approximately uniform treatment. |
