基于虚拟样机技术的摊铺机振捣器动力学特性研究

Dynamic characteristics of a paver tamper mechanism based on virtual prototyping technology

摊铺机振捣机构工作时,振捣梁的复合运动会对熨平板箱体产生冲击,直接影响了路面的摊铺质量。以9.0 m熨平板双振捣机构为研究对象,采用多体机械系统仿真软件ADAMS建立了熨平板振捣器的动力学模型,通过仿真分析,得到了振捣频率、振幅及各段间相位角对振捣梁惯性力和惯性力矩的影响规律。结果表明:主振捣振幅为5 mm,副振捣振幅调整为3或6 mm时,振捣器产生的惯性力和惯性力矩较小;随着振捣转速的增加,振捣装置的惯性力增加幅度较大,且均匀性变差;各加长段间的相位角调整为60°时,双振捣机构对熨平板框架产生的影响较小。

When the tamper mechanism of a paver is working, the composite motion of its beam produces an impact on its flation box to herm the paving quality of road, surface. The virtual prototype model of a 9. 0 m double-tamper mechanism was established and simulated with the software ADAMS . The effeit laws of vibration frequency, vibration amplitude and phase on the inertial force and inertial moment of the tamper beam were deduced. The results showed that the inertial force of the tamper beam increases greatly with increase in vibration speed, and its uniformity becomes worse; the double-tamper mechanism has a little effect on the frame of its flatiron-box when the phase angle is taken as 60°.