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双钢轮振动压路机在工作时有两个工作频率非常接近的振源——前后轮振源,它们传递的振动会使机架产生拍振。拍振现象在双钢轮振动压路机中普遍存在,严重的机架拍振会影响司机的操作舒适性,降低压路机零部件的可靠性,并且影响路面的平整度和压实度。为降低机架的拍振现象,对某双钢轮振动压路机进行试验,建立双钢轮振动压路机拍振模型,进行Matlab仿真验证,分析影响机架拍振的多种因素。分析得出:前后轮频率差是引起机架拍振的主要因素,设计时,频率差应控制在0.5Hz以内;此外,当前后轮轴线到机架质心的距离相等且等于机架的惯性半径时,可以消除拍振现象。
Tandem Vibratory Rollers work with two vibrators at very close working frequencies, front and rear wheel vibrators, and the vibrations they transmit cause the rack to vibrate. Beating vibration is common in double drum vibratory rollers. Severe rack beat vibration will affect the driver’s operational comfort, reduce the reliability of the roller components and affect the smoothness and compaction of the road. In order to reduce the rattling of the rack, a double-drum vibratory roller was tested, and the beat model of double drum vibratory roller was established. The simulation results were verified by Matlab and analyzed the various factors that affect the racket vibration. The analysis shows that the frequency difference between the front and rear wheels is the main factor that causes the racket vibration. When designing, the frequency difference should be controlled within 0.5Hz. In addition, the distance from the rear wheel axis to the center of mass of the frame is equal and equal to the radius of inertia When you can eliminate the beat phenomenon.