Conditioning roll biasing mechanism

Details Conditioning roll biasing mechanism Conditioning roll biasing mechanism

1989-07-10

1990-08-21

Kisliuk, Bruce M.

Harvesters

Motorized harvester

Having driven means for handling or treating crop

56 1, 56DIG1, 100168, 100171, A01D 4310, A01D 8200

Patent

active

049495356

ABSTRACT:
A biasing mechanism for a roll-type conditioning apparatus having a pair of generally vertically spaced, counterrotating conditioning rolls in which the upper roll is biased toward engagement with the lower roll is disclosed wherein a torsion bar interconnects the opposing ends of the upper roll such that any movement of either end of the upper roll away from the lower roll effects a twisting of the torsion bar to increase the biasing force exerted thereby on both ends of the upper conditioning roll. The torsion bar is connected to a mounting mechanism which includes a hub assembly pivotally connected to the frame of the conditioning apparatus on a pivot arm movably mounting one end of the upper conditioning roll. The pivotal connection of the hub assembly effects a rotational movement thereof whenever the pivot arm is moved to effect a corresponding twisting of the torsion bar connected thereto. The mounting mechanism includes an adjustment apparatus operable to vary the minimum biasing force exerted on the upper roll by the torsion bar. Any movement of either end of the upper conditioning roll with result in a twisting of the torsion bar to effect an increase in tensioning force exerted thereby on both ends of the upper conditioning roll, while a simultaneous movement of both ends of the upper roll will effect an opposing twisting of the respective ends of the torsion bar.

REFERENCES:
patent: 2737130 (1956-03-01), Rhodes
patent: 3405512 (1968-10-01), Hubenaar
patent: 3489079 (1970-01-01), Aurich et al.
patent: 4127981 (1978-12-01), Parrish et al.
patent: 4137696 (1979-02-01), Webb
patent: 4172353 (1979-10-01), Meek et al.
patent: 4174602 (1979-11-01), Webb et al.
patent: 4174603 (1979-11-01), Parrish
patent: 4519188 (1985-05-01), Webster et al.

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