A hydraulic control device of a forklift truck includes a first hydraulic cylinder [14], a first instructing member [22], a second hydraulic cylinder [19], a second instructing member [23], a hydraulic pump [30], an electric motor [31], a first oil passage [K1], a lowering control valve [32], a second oil passage [K2] that is branched from the first oil passage [K1] at a junction [Q], a flow control valve [37], a first pilot passage [51] through which pressure in the first oil passage [K1] at a position between the first hydraulic cylinder [14] and the lowering control valve [32] is applied to a first accommodating chamber (43) of the flow control valve [37] as the pressure [P1] upstream of the lowering control valve [32], and a second pilot passage [52] through which pressure in the first oil passage [K1] at a position between the lowering control valve [32] and the hydraulic pump [30] is applied to a second accommodating chamber (46) of the flow control valve [37] as the pressure downstream [P2] of the lowering control valve [32].
HYDRAULIC CONTROL DEVICE OF FORKLIFT TRUCK
HYDRAULISCHE STEUERUNGSVORRICHTUNG EINES GABELSTAPLERS
DISPOSITIF DE COMMANDE HYDRAULIQUE D'UN CHARIOT ÉLÉVATEUR À FOURCHE
29.08.2018
Patent
Elektronische Ressource
Englisch
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |