前言振动器是由圆柱偏心轴和轴承组成的交变负荷动力装置 ,交变负荷是由偏心轴旋转产生的不规则交变运动轨迹提供的。交变运动轨迹通过轴承提供能量传导产生能量 ,称之为交变振动源。振动源传导的交变能量被施加在模具上 ,使模箱内的砼密实成型。由于长期承受交变负荷 ,偏心轴 Foreword The vibrator is an alternating load power device composed of a cylindrical eccentric shaft and a bearing. The alternating load is provided by the irregular alternating trajectory generated by the rotation of the eccentric shaft. Alternating trajectories provide energy through bearings to provide energy, called alternating vibration sources. The alternating energy conducted by the vibration source is applied to the mold to compact the crucible in the mold box. Due to long-term exposure to alternating load, eccentric shaft