System for frame leveling and stabilizing a forklift

Details System for frame leveling and stabilizing a forklift System for frame leveling and stabilizing a forklift

B - Operations, Transporting

66

F

B66F 9/075 (2006.01) B66C 23/80 (2006.01) B66F 9/065 (2006.01) E02F 9/08 (2006.01) E02F 9/22 (2006.01)

Patent

CA 2306488

A system (10) is provided for leveling and stabilizing a forklift vehicle (11) having a frame (12) and at least one and preferably two axles (14a, 14b) pivotally connected with the frame (12). The system (10) includes a frame leveler device (16) including a hydraulic cylinder (18) extending between the frame (12) and the front axle (14a) and configured to move the frame (12) with respect to the axle (14a). A stabilizer device (20) is mounted to the frame (12) and includes a pair of arms (22a, 22b) and two stabilizer hydraulic cylinders (24a, 24b). Movement of the frame (12) with respect to the axle (14a) when the arm portions (23) contact the ground surface (S) causes hydraulic fluid to flow between the stabilizer cylinders (24a, 24b) such that the piston rod (26a, 26b) of one cylinder (24a, 24b) retracts and the rod (26a, 26b) of the other cylinder (24a, 24b) extends while the stabilizer arms (22a, 22b) remain substantially stationary.

L'invention concerne un système -10) de mise à niveau et de stabilisation d'un chariot élévateur à fourches (11) présentant un châssis (12) et au moins un, mais de préférence deux essieux (14a, 14b) montés rotatifs sur le châssis (12). Le système (10) inclut un dispositif de mise à niveau du châssis (16) muni d'un cylindre hydraulique (18) s'étendant entre le châssis (12) et l'essieu avant (14a) et configuré pour déplacer le châssis (12) relativement à l'essieu (14a). Un dispositif de stabilisation (20) fixé au châssis (12) comprend une paire de bras (22a, 22b) et deux cylindres hydrauliques stabilisateurs (24a, 24b). Le mouvement du châssis (12) relativement à l'essieu (14a), lorsque les parties des bras (23) sont en contact avec la surface du sol (S), provoque l'écoulement du fluide hydraulique entre les cylindres stabilisateurs (24a, 24b), si bien que la tige de piston (26a, 26b) d'un des cylindre (24a, 24b) s'escamote et la tige de l'autre cylindre (26a, 26b) se déploie tandis que les bras stabilisateurs (22a, 22b) demeurent sensiblement fixes.

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