| With the continuous development of modern coal mining technology, the demand for coal is increasing, so the design and work demands of hydraulic support is also growing. Various countries constantly design and improve the type of hydraulic support under various working conditions in order to improve the working performance of hydraulic support. This paper will use the unified modeling language Modelica to complete the hydraulic support modeling and simulation, and explore a new method to improve the design efficiency of the hydraulic support and its product performance.Based on the traditional digital simulation, the paper applies the object oriented simulation analysis language Modelica to deal with simulation analysis of a hydraulic shield support. Firstly, the multi-domain software-Dymola is used to model the mechanical system of the hydraulic support and the hydraulic system of the support pillar, and the interface between mechanical model system and hydraulic model system is defined. Then based on the mechanical model of hydraulic support, kinematics simulation analysis is carried out to get the trajectories of top beam front end, and the least squares method is used to complete the polynomial fitting. Then mechanical and hydraulic systems coupling analysis of hydraulic support is conducted to attain the dynamic characteristics of hydraulic support in the rising process of the hydraulic columns. At last, the efficiency of the hydraulic support by the influence of the cylinder size and flow rate is analyzed briefly.The paper performs research for the design of hydraulic support in multi-domain simulation, which can provide an effective and simple method to study the hydraulic support and act as certain guiding significance for its development. |
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