| Ungraded amplitude of intelligent vibratory roller is the development trend of roadroller, this paper is a novel electrodeless AM mechanical structure and design of hydraulic andcontrol system based on. The mechanical structure is applied to the18tons of vibratory roller.In every steel wheel in each of the2vibration exciter, characterized by adjusting includedangle between2exciters eccentric cylinder position is different to realize multifunctionalvibration road roller. Roller amplitude for piston block position of each vibrator for cylinderof different corresponding to the different.1, Based on the multi-functional vibrator structure research, combined with the workingprinciple and working mode of the system, design of the hydraulic system of variableamplitude. Theoretical analysis and research for the modeling of the hydraulic system. Getroller amplitude changes with the piston block (a movable eccentric block) linear relationbetween the two cavity volume change, made the theory upholstery for the design of controlsystem for the next step.2, The research and Analysis on the hydraulic system of hydraulic components, selectreasonable matching. To check the hydraulic system, to ensure that the system can be accurateand stable operation.3, Use AMESim software to carry on the simulation analysis, obtained a reasonabledamping aperture, effectively reduces the system fluctuations. To improve the stability of thesystem. Analysis of periodic simulation of the hydraulic system, the conclusion is consistentwith the actual.4The design of the control system of variable amplitude and frequency. Steplessamplitude modulation of a manual control and automatic control two models. The two modesare through data matching complete control, flow meter series in the hydraulic system, themetrology piston block two cavity fluid volume, determine the nominal amplitude of roadroller. Frequency control is the swashplate angle change of variable pump, and then changethe frequency modulation motor speed control.The hardware of the control system design, uses the ARM STM32microprocessor; the software design of the system is divided into6models, respectively, for each moduleassembly.Pavement compaction is a very complex process, many influencing factors. In this paper,the expert system in the amplitude and frequency control system application, through datamatching can more accurately complete the pavement compaction. |
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