A mathematical model of the hydraulic system of the universal hosed concrete pump
Keywords:universal hosed concrete pump, hydraulic diagram, mathematical model, high-torque hydraulic motor, working fluid
AbstractThe paper presents a scheme of a new-design universal pistonless concrete pump with a hydraulic drive and provides a basic diagram of its hydraulic system. To maximize energy efficiency, the designed hydraulic circuit is implemented through the following hydraulic devices: high-torque hydraulic motors, a gear pump, a hydraulic cylinder, hydraulic spreaders, a filter, a safety valve, anticavitation and check valves, a flow controller, and pipelines. The key element in the hydraulic circuit of the pistonless pump is high-torque hydraulic motors that have low rotation frequencies and thus would ensure the necessary torque on the rotor of the concrete pump to push the concrete mix. The designed nonlinear mathematical lumped-parameter model of the hydraulic system of the universal hosed concrete pump is based on its decomposition into individual structural elements and a detailed account of variables of the working fluid, which ensures a more precise assessment of the output parameters of the concrete pump. The mathematical model allows determining static and dynamic characteristics of the entire system and its individual components, studying the parameters, and setting new rational parameters.
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Copyright (c) 2016 Denys Chayka, Inga Emeljanova, Pavlo Andrenko
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