文档介绍：摘要
研究振动力场作用下固体输送段的动态输送理论是一个全新的概念。在振动力场作用下聚合物物料运动加剧,容易产生滚动,对固体输送段的填充起到积极作用,从而深化单螺杆挤出机的理论与工程应用。本设计的主要任务是振动系统的设计,然而振动系统又分为三大类:机械振动、电磁振动和液压振动。
本课程设计在相比较电磁振动和液压振动的的情况下,相比较与各个振动系统的优缺点情况下,最终确定了最适合本设计的振动方案,机械振动即物体或质点在其平衡位置附近所作的往复运动。
本设计采用电动机为系统所需振动提供原动力,利用传动轴将电机的转动导出,继而带动传动轴上的偏心轮转动,由于偏心轮的作用,便可使得振动板做有规律的振动,然而只需要给予偏心轮提供不同的偏心距即可得到不同的振幅,由于偏心轮结构的特点,本设计引入弹簧作为蓄能器,利用弹簧的蓄能和释能配合偏心轮机构来使得振动板做有规律的运动。振动必然需要有提供能量的振动源,再根据系统的需求,来确定振动的振幅和频率。显然若想得到不同频率的振动,只需要调节电机的转速。本设计采用变频器便可以实现电机的调速,也就是讲对于不同的需求,振动装置可以实现大幅的调频及微调。
关键词:振动频率振幅转速偏心轮
ABSTRACT
Vibration force field of solid conveying section under the dynamic transport theory is a new concept. In polymer materials under vibration force field campaign intensified, prone to rolling, filling the solid conveying section play a positive role in deepening the single-screw extruder to the Theory and Application. Vibration-based design, however, certainly one of the main tasks, divided into three basic categories: mechanical vibration, ic vibration and hydraulic vibration.
This course is designed in parison of ic vibration and hydraulic vibration of the case, compared with the advantages and disadvantages of each vibration system case, the final design to determine the most suitable for the vibration of the program, mechanical vibration or object or particle in its equilibrium position the reciprocating motion.
This design uses vibration motors for the system to provide the necessary impetus for the use of the motor shaft will turn to export, and then the eccentric shaft on rotation, due to the role of eccentric, vibration plate can be made to do a regular vibration, but only need to provide different eccentric eccentricity amplitude can be different, because the characteristics of eccentric structure, the design of the introduction of spring as the accumulator, storage and release of the spring to meet the eccentric body to make do with vibration plate regular exercise. Must have an energy vibration to provide the vibration source, then according