基于并联机构的多维振动筛分试验台设计

为解决传统振动筛分装置不能实现多维振动的问题,设计了基于并联机构的多维振动筛分试验台,试验台以全解耦型多维主体激振机构为核心,采用大功率直线电动机为直线往复振动的动力源,传动链短,机械结构和运动参数的调整简单便捷,可获得多个工况下物料颗粒的筛分性能指标以及物料在筛面上的运动规律。试验台以计算机和PMAC控制卡作为硬件控制系统的核心,测控软件系统可以对试验过程中工作部件的振幅、速度、频率、扭矩和功率等参数进行实时采集、显示、处理与分析,为多维振动筛分设备的设计提供了依据。

Design of Multi-dimensional Vibration Screening Test Bench Based on Parallel Mechanism

Multi-dimensional vibration screening test bench based on the theory of parallel mechanism was designed to solve the problem that multi-dimensional vibration could not be attained by traditional vibration screening device. This multi-dimensional vibration screening test bench took fully decoupled multi-dimensional main exciting mechanism as center, and adopted high power linear motor as linear reciprocating vibration power source. It had the characteristics of shorter driving chain and convenient adjustment of mechanical structure and motion parameters to obtain material pellets vibration performance under several conditions and motion law of material on the screen. The test bench used computer and PMAC control card as the core of hardware control system. Measurement and control software system could collect real-timely, display, process and analyze the amplitude, velocity, frequency, torque and power to provide the design basis of multi-dimensional vibration equipment.