Slave cylinder stabilizer for harvester header

Details Slave cylinder stabilizer for harvester header Slave cylinder stabilizer for harvester header

A - Human Necessities

01

D

A01D 47/00 (2006.01) A01B 63/10 (2006.01) A01D 34/28 (2006.01) A01D 41/12 (2006.01) A01D 41/14 (2006.01)

Patent

CA 2238700

The windrower or other harvester has a hydraulic lift circuit for its header that includes a pair of double-acting cylinders which operate in concert to raise the header and provide a solid, lower limit for downward swinging of the header. The two cylinders are connected to one another in a master-slave relationship, and the slave cylinder has its return line normally blocked by a one-way check valve so that a body of fluid is trapped against the piston of the slave cylinder during field operations. This stabilizes the two cylinders to reduce header bounce.

Andaineuse ou autre type de récolteuse ayant un organe de coupe doté d'un circuit de relevage hydraulique. Le circuit de relevage comprend deux vérins à double effet qui fonctionnent de concert pour soulever l'organe de coupe et fournir une limite inférieure solide pour le pivotement inférieur de l'organe de coupe. Les deux cylindres sont joints dans une relation maître-esclave, le vérin asservi ayant sa conduite de retour normalement bloquée par un clapet antiretour unidirectionnel, de sorte qu'une quantité de fluide est piégée contre le piston du cylindre asservi pendant son fonctionnement sur le terrain. Les deux cylindres sont ainsi stabilisés, ce qui a pour effet de réduire le rebondissement de l'organe de coupe.

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