The invention belongs to hydraulic control devices and particularly relates to an intelligent load sensing hydraulic system of an electric forklift. The intelligent load sensing hydraulic system is composed of an inclined oil cylinder (11), a steering oil cylinder (19), a lifting oil cylinder (1), an oil tank, a seat (8), a first electromagnetic valve (2), a second electromagnetic valve (9), a third electromagnetic valve (18), a direct-current power source (10), a variable frequency motor (6), an oil pump (13), a load sensing steering mechanism (3), a coder (5), a pump controller inverter (7), first load feedback (4), second load feedback (12), third load feedback (15), a priority valve (16) and a multi-way valve (17). According to the intelligent load sensing hydraulic system of the electric forklift, throttling losses and overflow losses are avoided, the circuit efficiency of the hydraulic system is high, the energy-saving effect is obvious, the speed regulating range is enlarged, the speed regulating precision is improved, the service life of the whole hydraulic system is prolonged, the reliability of performance is improved, noise is lowered, and the working environment is facilitated.
Intelligent load sensing hydraulic system of electric forklift
2015-05-20
Patent
Electronic Resource
English
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 |
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