Analysis of kinematic and force parameters of leaning-and-shunting door opening mechanism of electric public transport https://doi.org/10.33108/visnyk_tntu2019.01.047
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Abstract
The paper analyses the design and operational peculiarities of the leaning-and-shunting door opening mechanism of electric public transport. The corresponding design of the mechanism is proposed. It is
suggested to be driven by electric drive. The simplified diagram of the mechanism is constructed. Structural and kinematic analysis of the mechanism is performed, and the analytical dependencies for describing the motion of
its links during the door opening/closing are derived. The main kinematic parameters of the studied mechanism are investigated on the basis of the derived analytical dependencies in MathCAD software, as well as by means of
simulating the motion of the solid-state model of the mechanism designed in SolidWorks software. The conclusions about the agreement of the results of theoretical investigations performed on the basis of numerical solving the
obtained motion equations and of the virtual experiment (motion simulation in SolidWorks software) are drawn. The analysis of energy efficiency of the investigated leaning-and-shunting door opening mechanism of electric
public transport is carried out. Prescribing the resistance force acting on the door leaf and calculating the corresponding door motion speed during its closing, the dependency of the nominal power supply of the
mechanism drive as a function of corresponding generalized coordinates was deduced. Analyzing the obtained results, it was established that the necessary nominal power of the leaning-and-shunting mechanism drive is almost
twice smaller than the necessary nominal power of the widely used turning-and-shunting door mechanism of electric public transport.
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