Material or article handling – Elevator or hoist and loading or unloading means therefor – Elevator wherein means comprises guide mounted for relative...
Patent
1998-11-12
2000-05-02
Oleszewski, Robert P.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Elevator wherein means comprises guide mounted for relative...
280124112, 280755, 187222, 701 50, B60G 17005, B66F 9075, B66F 922
Patent
active
060565012
ABSTRACT:
An axle tilt control apparatus for forklifts is disclosed. The forklift includes a rear axle pivotally supported by a body frame and a front axle rigidly fixed to the body frame. A mast is supported at the front portion of the body frame to tilt forward and backward. Forks are supported by the mast to be lifted and lowered. The center of gravity of the forklift in the fore-and-aft direction approaches the front axle as the mast is tilted forward. Pivoting of the rear axle is restricted by the hydraulic cylinder when the height of the forks is higher than a predetermined height determination value and the weight of a load on the forks is heavier than a predetermined weight determination value to improve the vehicle's stability. The weight determination value increases as the mast is tilted forward. When a load on the forks is being unloaded, tilting of the rear axle is permitted regardless of the height of the forks and the weight of the load on the forks. Therefore, the rear axle is not unnecessarily locked.
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Ishikawa Kazuo
Ogawa Takaki
Suzuki Masakatsu
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
O'Connor Gerald J.
Oleszewski Robert P.
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