Rotary lifter for stems of seed-bearing crops comprises lifting screws with ground-following skids under forward end and universal joints at rear

摘要

The lifter consists of pairs of contrarotating lifting screws (5) with ground-following skids (1) under their forward ends, to which the screws are connected by bearings (4), and universal joints (7) at their rear ends, connected to drive shafts (9) in bearings (8). The forward end of each screw has a cylindrical extension (6) with a conical or ogival tip.