东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (12): 1740-1743.DOI: 10.12068/j.issn.1005-3026.2017.12.15

• 机械工程 • 上一篇    下一篇

双齿辊破碎机随机离散脉冲载荷特性

姚红良1, 常锡振1, 纪鹏2, 王刚3   

  1. (1. 东北大学 机械工程与自动化学院, 辽宁 沈阳110819; 2. 东北大学 信息科学与工程学院, 辽宁 沈阳110819; 3. 朝阳重机集团有限公司, 辽宁 朝阳122000)
  • 收稿日期:2016-06-15 修回日期:2016-06-15 出版日期:2017-12-15 发布日期:2018-01-02
  • 通讯作者: 姚红良
  • 作者简介:姚红良(1979-),男,河北保定人,东北大学副教授.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA062002).

Random Discrete Pulse Load Characteristics of Double Toothed Roll Crusher

YAO Hong-liang1, CHANG Xi-zhen1, JI Peng2, WANG Gang3   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China; 3. Chaoyang Heavy Machinery Group Co., Ltd., Chaoyang 122000, China.
  • Received:2016-06-15 Revised:2016-06-15 Online:2017-12-15 Published:2018-01-02
  • Contact: YAO Hong-liang
  • About author:-
  • Supported by:
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摘要: 首先,讨论了基于生产能力的物料随机离散特性,推导了满足D3分布的颗粒容重递推公式及区间颗粒数概率计算公式;其次,分析了细颗粒物料破碎时相位失稳和相位前移现象,得出了细颗粒物料必须前移到中颗粒物料破碎段的结论;然后,建立了单次截割时截割阻力与作用时间的脉冲载荷模型,并提出了在中颗粒破碎段,用截割球体物料达到排放粒度要求的容积差与单次截割弓厚容积的比值作为完整球体物料脉冲载荷的修正系数,并给出了完整球体物料的脉冲载荷模型.最后,建立了全部组成颗粒的随机离散脉冲载荷模型.

关键词: 截割阻力, 弓厚脉冲载荷, 球截割脉冲载荷, 颗粒随机离散

Abstract: Firstly, the random discrete characteristics of material particles based on production capacity is discussed, the recursive formula of particle bulk density and expression of interval particle number under the condition of D3 distribution are presented. Secondly, the cutting resistance and the action time pulse load models are established, and put forward to use the ratio of the volume difference of the particle size required by the cutting ball material and the ratio of the volume of a single cut as a correction factor for the pulse load of the whole sphere material, and given the full pulse load model of the sphere material. Finally, the random discrete pulse load model of all the particles is established.

Key words: cutting resistance, bow thick cutting pulse, ball cutting pulse, particle random discretization

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