MODELLING FORKLIFT TRUCK MOVEMENT IN THE VDI CYCLE AND THE POSSIBILITY OF ENERGY RECOVERY

Abstract eng:
This paper puts forward a proposal of description of movement of a forklift truck in the form of a non-linear differential equation. In this model, resistance to motion while driving in a straight line and along curves is taken into account. The external traction characteristics of a drivetrain are calculated on the basis of power of traction motors and static forces acting on the driving axle of a forklift truck, for an empty and loaded forklift truck. A model designed in such a way is used to carry out a simulation of forklift truck operation in a specified cycle defined by the VDI 2198 standard. This standard makes it possible to compare operating parameters of various forklift trucks under identical operating conditions. In the paper’s conclusions, the amounts of possibly recoverable energy, coming from braking and lowering loads collected from racks by means of fork of a forklift truck, are estimated.

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