A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed 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, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and control the operation of the at least one valve using the estimated movable assembly speed.
Materials handling vehicle monitoring a pressure of hydraulic fluid within a hydraulic structure
2016-07-19
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 |
MATERIALS HANDLING VEHICLE MONITORING A PRESSURE OF HYDRAULIC FLUID WITHIN A HYDRAULIC STRUCTURE
European Patent Office | 2019
|Materials Handling Vehicle Monitoring a Pressure of Hydraulic Fluid Within a Hydraulic Structure
European Patent Office | 2018
|Materials handling vehicle having control structure to monitor a pressure of hydraulic fluid
European Patent Office | 2015
|