| 摘要 |
<p>A material handling vehicle (100) has a load engaging implement (210) for controllably loading and unloading a load (200). The load engaging implement (210) has a stationary portion (300) and a movable portion (305). The movable portion (305) is connected to the stationary portion (300) and is movable between extended and retracted positions. The vehicle (100) produces a position signal when the vehicle (100) is positioned adjacent a load (200). A device (400) pivotally connects the load engaging implement (210) to the vehicle frame (115) and pivotally moves the load engaging implement (210) in a first direction to a first angular position in response to receiving a first signal and in a second direction to a second angular position in response to receiving a third signal. A first driving unit (310) extends the movable portion (305) in response to receiving a second signal and retracts the movable portion (305) in response to receiving a fourth signal. A controller (705) produces the first signal in response to receiving the position signal, produces the second signal in response to the load engaging implement (210) being at the first angular position, produces the third signal in response to the movable portion (305) being at the extended position, and produces the fourth signal in response to the load engaging implement (210) being at the second angular position. The vehicle (100) automatically positions the load engaging implement (210) in a manner that provides for an optimum amount of flexibility for a material handling system.</p> |
