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目前国内分析振动压路机时,数学模型大多是将其简化为只有一个车轮,忽略了前后轮在振动过程中的相互作用对机器性能的影响。为此建立了压路机前后轮同时振动时机架的两自由度数学模型,利用机械振动的模态分析方法进行了研究,得出了压路机机架的振动与其前后轮振动之间的一般关系式。证明振动压路机工作时不但前后轮之间的振动是相互影响的,而且这种影响对机器的工作会产生不良的作用。要消除这种影响,应该符合以下条件:(1)单振动轮的振动压路机前后轮到机架质心距离的乘积等于机架惯性半径的平方;(2)双驱双振压路机的两振动轮到机架质心的距离都等于机架的惯性半径。
At present, when analyzing the vibratory roller, most of the mathematical models are simplified to only one wheel, ignoring the influence of the interaction between the front and the rear wheels on the performance of the machine. For this reason, a mathematical model of two degrees of freedom of the chassis during the simultaneous vibration of front and rear wheels is established. The modal analysis of mechanical vibration is used to study the relationship between the vibration of the roller frame and the vibration of front and rear wheels. Vibratory roller to prove that not only the vibration between the front and rear wheels are mutually affected, but also affect the work of the machine will have a negative effect. To eliminate this effect, the following conditions should be met: (1) vibration of a single vibration wheel The product of the distance from the front wheel and the rear wheel to the center of mass of the frame is equal to the square of the inertia radius of the frame; (2) The center of mass of the frame is equal to the radius of inertia of the frame.