A materials handling vehicle is provided comprising: a support structure including a first member; a movable assembly coupled to the support structure; a hydraulic system; and a control structure. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure first member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly. The control structure may measure an electric current flow into or out of the hydraulic system motor and may control an operating speed of the hydraulic system motor using a comparison involving the electric current flow into or out of the hydraulic system motor and a predetermined threshold value. The control structure reduces the operating speed of the hydraulic system motor if the electric current flow into or out of the hydraulic system motor is greater than or equal to the predetermined threshold value. I* I V I t i0. -- FtI 1*1*I UY I L tAM. Docket No. CRN 607 PA q cl -Rom --41 a0
Materials Handling Vehicle Measuring Electric Current Flow Into/Out of a Hydraulic System Motor
2018-01-25
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 |
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