The present invention relates to a lifting device intended to be placed on a chassis and comprising a bracket actuated by at least one jack (100, 110) supplied via control means by a pressure source (130) to operate successively loading or tipping and unloading or tipping return, characterized in that the pressure source (130) is adapted to selectively generate two feed rates of the jack (100, 110) and that it comprises means (150) forming a pressure limiter at the outlet of the pressure source (130) in the selected high flow rate regime.
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