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变椭圆轨迹振动筛的动力学和筛选特性

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变椭圆轨迹振动筛的动力学和筛选特性(中文2900字,英文2000字)
摘要:根据振动筛的理想运动特性,提出了变椭圆轨迹的振动筛。根据所需的结构运动特性建立了一个精确的力学模型。应用多自由度振动理论,对振动筛的特性进行了分析。获得了线性的、圆形或椭圆形的运动轨迹振动筛的运动学参数。通过计算机模拟振动筛的运动动态方程得以有效的求解。通过理论计算求得振动筛上五个具体点的工艺参数,包括振幅、运动速度和抛掷指数。结果显示,新设计的振动筛的轨迹遵循理想的筛选运动。筛分效率及处理能力可能因此而得到有效改进。
关键字:变椭圆轨迹;等厚筛分;动态模型;运动特性;筛分特性
 
Dynamics and screening characteristics of
a vibrating screen with variable elliptical trace
Abstract: the ideal motion characteristics for the vibrating screen was presented ,vibrating screen with variable elliptical trace was proposed. An accurate mechanical model was constructed according to the required structural motion features.Applying multi-degree-of-freedom vibration theory,characteristics of the vibrating screen was analyzed.Kinematics parameters of the vibrating screen which motion traces were linear,circular or elliptical were obtained.The stable solutions of the dynamic equations gave the motions of the vibrating screen by means of computer simulations.Technological parameters,including amplitude,movement velocity and throwing index,of five specificpoints along the screen surface were gained by theoretical calculation .The results show that the traces of the new designed vibrating screen follow the ideal screening motion .The screening efficiency and processing capacity may thus be effectively improved. [资料来源:Doc163.com]
Keywords:variable elliptical trace;screening process with constant bed thickness; dynamic model;motion characteristic;screening characteristics [资料来源:http://www.doc163.com]

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