Reduced mass high speed doffer column with improved shaft preload
A technology for doffing and cotton columns, which is applied in the field of doffing columns, and can solve problems such as shaft bending
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[0008] refer to figure 1 , which shows a doffer column assembly 10 for a harvester row unit of a conventional cotton picker. The doffer column structure 10 includes a plurality of doffers 12 supported on a vertical shaft 14 for rotation about an axis 15 . The doffers 12 are spaced vertically on the shaft 14 by spacers 16 . Alternatively, the spacers may be replaced by protruding hubs on the doffer 12 . Doffer 12 rotates with shaft 14 over rows of spindles and unwinds and removes cotton from the spindles in the rows.
[0009] Each doffer 12 includes a generally horizontal circular metal disc or floor 22 supporting radially outwardly and downwardly oriented lugs 24 in a conventional manner. Located in the center of the base plate 22 is a circular hole 26 with a diameter slightly larger than that of the shaft 14 . Doffers 12 are slid into place on shaft 14 on which spacers 16 are inserted between adjacent doffers. Retention assembly 28 and bearing assembly 30 mount lower end...
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