Dynamic simulation and analysis of the elevating mechanism of a forklift based on a power bond graph

다국어 초록 (Multilingual Abstract)

An electric elevating mechanism is designed based on the working principle of the lifting equipment for the CPD30 forklift. The mathematical models based on the power bond graph for an electric elevating system and a hydraulic elevating system are built by considering the execution condition of the fork arms of a forklift, including starting, rising and braking. On the basis of these models, dynamic simulation and analysis are performed for the starting, rising and braking of the fork arms frame. Then, the corresponding mathematical model is derived. Furthermore, the curve of the movement velocity of the fork arms frame is determined. The characteristics of the two types of lifting mechanism are summarized for two types of working effect of the lifting system under the same conditions by comparing the difference between the actual trajectory curve and the curve of the original plan. The theoretical foundations for the type selection of the forklift elevating mechanism and even that of engineering machinery are provided.

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