Hydraulic load lifting device for load conveying vehicle evaluates weight of handled load from measured current required by hydraulic pump drive for maintaining load at constant height

摘要

The hydraulic load lifting device (10) has a load reception device (12) operated by a hydraulic actuator (16) connected in a hydraulic circuit (18) supplied via an electrically operated hydraulic pump (20). The weight of the handled load (14) is evaluated from the measured current required by the pump drive for supporting the load at a constant height.