Mechanical pressure control for a load-handling device

B - Operations – Transporting – 66 – F

Patent

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Details

B66F 9/18 (2006.01) B66F 9/22 (2006.01)

Patent

CA 2658642

A control for a load-handling device including a grjpper for handling a load and being connected to pressure controlled gripping, lifting and tilting actuators The control including a pressure-sensing actuator assembly, a gripping pressure regulator and pressure control assembly. The pressure-sensing actuator assembly being is placed in pressure communication with the lifting and tilting actuators. The gripping pressure regulator regulates the gripping pressure. The pressure control assembly includes interrelated movable members for interacting with the pressure- sensing actuator assembly and for acting on the gripping pressure regulator. The pressure-sensing actuator is adapted to sense the weight of the load from the pressure of the lifting and tilting actuators and to communicate this pressure to the pressure control assembly. Thereby, interacting with the pressure control assembly as to cause to latter to so act on the gripping pressure regulator as to provide a suitable gripping pressure in response to the weight of the load.

L'invention concerne une commande pour un organe de préhension comprenant un dispositif préhenseur destiné à manipuler une charge et qui est relié à des actionneurs de préhension, levage et inclinaison commandés par pression. La commande précitée comprend un ensemble actionneur à détection de pression, un régulateur de pression de préhension et un ensemble de régulation de pression. L'ensemble actionneur à détection de pression est placé en communication par pression avec les actionneurs de levage et d'inclinaison. Le régulateur de pression de préhension régule la pression de préhension. L'ensemble de régulation de pression comprend des éléments mobiles reliés entre eux, qui interagissent avec l'ensemble actionneur à détection de pression et qui agissent sur le régulateur de pression de préhension. L'actionneur à détection de pression est apte à détecter le poids de la charge sur la base de la pression des actionneurs de levage et d'inclinaison, et à communiquer ladite pression à l'ensemble de régulation de pression.

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