Human power amplifier for lifting load including apparatus...

B - Operations – Transporting – 66 – D

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Details

B66D 3/18 (2006.01) B66C 1/02 (2006.01)

Patent

CA 2373247

A human power amplifier assist device (10) includes an end-effector (14) that is grasped by a human operator and applied to a load (25). The end-effector (14) is suspended, via a line (13), from a take-up pulley (11), winch or drum that is driven by an actuator (12) to lift or lower the load (25). The end-effector (14) includes a force sensor (31) that measures the vertical force imposed on the end-effector (14) by the operator and delivers a signal to a controller (20). The controller (20) and actuator (12) are structured in such a way that a predetermined percentage of the force necessary to lift or lower the load (25) is applied by the actuator (12), with the remaining force being supplied by the operator. The load (25) thus feels lighter to the operator, but the operator does not lose the sense of lifting against both the gravitation and inertial forces originating in the load (25).

L'invention concerne un amplificateur de force humaine (10) comprenant un effecteur terminal (14) qui est saisi par un opérateur humain et appliqué à une charge (25). L'effecteur terminal (14) est suspendu par un câble (13) à une poulie, un treuil ou un tambour (11) de tension qui est entraîné par un actionneur (12) pour soulever ou abaisser la charge. L'effecteur terminal (14) comprend un détecteur de force (31) qui mesure la force verticale appliquée à l'effecteur terminal (14) par l'opérateur et fournit un signal à un organe de commande (20) . L'organe de commande (20) et l'actionneur (12) sont conçus de telle façon qu'un pourcentage préétabli de la force nécessaire pour soulever ou abaisser la charge (25) est appliqué par l'actionneur (12), la force restante étant fournie par l'opérateur. L'opérateur trouve la charge (25) ainsi plus légère sans pour autant perdre la sensation de soulever la charge en exerçant un effort contre la pesanteur et les forces d'inertie propres à la charge.

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