单振动电机激振的振动松散机振动体动力学分析

为实现烟片分切后的预松散且提高梗丝的回潮速率,设计了振动松散机。将单振动电机横置于振动体上作为振动松散机激振源,基于振动体结构将橡胶弹性组件视作刚体并建立振动体运动微分方程,从中解得振动体的运动方程和运动轨迹,对比分析了2种计算方式下振动体的运动特性。结果表明:将弹性组件视为刚体时振动体作椭圆形振动;反之则振动电机偏心块在竖直方向的旋转惯性力分量几乎全部被橡胶组件所平衡,振动体受到的激振力主要来自振动电机旋转惯性力的横向分量,因此,振动体在水平方向作近似椭圆的线性振动,其结构设计满足使用要求并达到降本增效的目的。

Analysis of dynamics for vibrating body of vibrating loose machine excited by single vibrating motor

The vibration loose machine was designed to pre-loose the strips being cut. It was beneficial to increase the moisture regain of the stem. The Single Vibrating Motor was placed transversely on the vibrating body as an excitation source of the vibration loose machine. The differential equation of its vibration was established based on analyzing the structure of the vibrating body when the rubber elastic component was regarded as a rigid body. The motion equation and trajectory of the vibrating body could be obtained in more details. The vibration characteristics were analyzed comparatively by the two kinds of calculation method. The result indicated that the motion trajectory of the vibrating body was an elliptic when the rubber elastic component was regarded as a rigid body. Conversely, the inertia force of the vibration motor in the vertical direction was all almost balanced by the rubber components. The excitation force was mainly derived from the transverse component of the rotational inertia force of the vibration motor. Therefore, the motion of the vibration body was an approximate linear ellipse. The structure design could meet the use requirements and achieve the purpose of reducing cost to increase benefits.