In this paper, a kind of heavy-duty and deep cleaning machine working device is studied. The closed-loop vector method is used to establish the kinematics model of the hydraulic cylinder rod mechanism, and the Lagrange dynamics is used to establish the dynamic model of working device. MATLAB, AMESim and ADAMS are used to provide excitation signal for the servo valve, build the hydraulic simulation model, and carry out kinematics and dynamics simulation. Using different signal excitation, the displacement tracking of the working device and the change of hydraulic pressure are observed. The results show that the closed-loop vector method and Lagrange dynamics are used to establish the kinematics and dynamics model of the working device, which facilitates the study of the working device of the cleaning machine; the simulation interface is stable, and the co-simulation of control arithmetic is achieved, hydraulic system and structural dynamics; the hydraulic pressure is obtained through the co-simulation analysis. The effect of cylinder displacement tracking and the change of hydraulic pressure provided the basis for working device design and optimization.
:The temperature distribution of the electrolyte in electrochemical machining gap influence the machining precision. The temperature distribution of electrolyte is solved by equations, which using the turbulence SST equation to get the flow velocity of boundary layer, the Euler two-fluid model to solve the bubble rate distribution, coupling electric field and convective heat transfer equations. The influence of different flow rate and outlet pressure on the temperature distribution of the electrolyte is analyzed by comparing the results of the k model, SST turbulent and SST coupling with Euler model. The results show that the calculated temperature of the SST turbulent model is closer to the experimental results than the k model. Considering the effect of bubble rate on temperature, the result of temperature distribution calculated by SST coupled Euler model is more accurate. The temperature of the electrolyte at the outlet decreases with the increase of flow. At the same flow rate, the temperature of the inter-electrode electrolyte increases slightly with the increase of outlet pressure.
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