Balanced epicyclic sickle drive

Details Balanced epicyclic sickle drive Balanced epicyclic sickle drive

A - Human Necessities

01

D

A01D 34/13 (2006.01) A01D 34/00 (2006.01) A01D 34/02 (2006.01)

Patent

CA 2606020

A counterbalancing epicyclic sickle drive has a pair of oppositely rotating weights that offset the inertial forces of the sickle during its abrupt acceleration and deceleration at opposite ends of its path of travel. One of the weights rotates with the main shaft of the drive about its longitudinal axis, while the second weight is fixed to an oppositely rotating crankshaft that orbits about the axis of the main shaft in eccentric relationship thereto. The weight on the main shaft is heavier than the weight on the crankshaft so as to offset changes in inertial forces produced by the crankshaft weight during increased acceleration of its center of gravity at opposite ends of its elliptical path of travel about the axis of the main shaft.

L'invention concerne une commande de faucille épicyclique d'équilibrage comprenant une paire de poids rotatifs opposés décalant les forces d'inertie de la faucille au cours de son accélération et de son ralentissement brusques aux extrémités opposées de sa trajectoire de déplacement. Un des poids tourne avec l'arbre principal du dispositif de commande autour de son axe longitudinal, tandis que le second poids est fixé à un vilebrequin rotatif opposé mis en orbite autour de l'axe de l'arbre principal selon une relation excentrique avec celui-ci. Le poids de l'arbre principal est supérieur au poids du vilebrequin de manière à décaler les changements des forces d'inertie produites par le poids du vilebrequin lors de l'accélération supérieure de son centre de gravité aux extrémités opposées de sa trajectoire de déplacement elliptique autour de l'axe de l'arbre principal.

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