Hydraulic active boom suspension for a telehandler

摘要: A suspension for the boom of a loading vehicle includes hydraulic cylinder raising and lowering, or extending retracting (in case telescopic cylinder), boom. direction control valve is provided selectively routing oil to from at least head-end chamber cylinder. position sensor senses piston rod, start operation, sends target signal representing this beginning unit which determines difference between current rod. When equals preset threshold, pressure-limiting unit, in form choke, activated so as fluid flow return rod its initial generated signal. Different embodiments have different component arrangements influencing reaction time and/or adapting circuitry use with single-acting, double-acting cylinders.