中国机械工程 ›› 2021, Vol. 32 ›› Issue (21): 2542-2551,2561.DOI: 10.3969/j.issn.1004-132X.2021.21.003

• 机械基础工程 • 上一篇    下一篇

刮板输送机仿生条纹型中部槽耐磨性试验研究

李娟莉1,2;刘朝阳1,2;李博1,2;麻豪洲1,2;赵保林1,2   

  1. 1.太原理工大学机械与运载工程学院,太原,030024
    2.煤矿综采装备山西省重点实验室,太原,030024
  • 出版日期:2021-11-10 发布日期:2021-11-25
  • 通讯作者: 李博(通信作者),男,1988年生,副教授。研究方向为离散元法与机械结构优化设计。E-mail:libo@tyut.edu.cn。
  • 作者简介:李娟莉,女,1979年生,教授。研究方向为机械装备数字化与信息化、机械结构优化设计。发表论文40余篇,出版专著1部。E-mail:lijuanli@tyut.edu.cn。
  • 基金资助:
    国家自然科学基金(51804207,51875386)

Experimental Study of Wear Resistance of Bionic Striped Middle Trough for Scraper Conveyors

LI Juanli1,2;LIU Zhaoyang1,2;LI Bo1,2;MA Haozhou1,2;ZHAO Baolin1,2   

  1. 1.College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan,030024
    2.Shanxi Key Laboratory of Fully-Mechanized Coal Mining Equipment,Taiyuan,030024
  • Online:2021-11-10 Published:2021-11-25

摘要: 为了提高刮板输送机中部槽的耐磨性,以扇贝壳及穿山甲鳞片的非光滑条纹结构为仿生原型设计了仿生中板。以磨损深度为响应值,基于单因素法和响应面法进行磨损分析,探究耐磨仿生的最优结构参数,结果表明:显著性影响由大到小依次为宽度、宽高比、节距,条纹宽高比与条纹宽度的交互作用最为明显;在特定工况(煤颗粒粒度6~8 mm、载荷20 N、刮板链链速0.65 m/s)下,条纹型结构的最优耐磨参数组合为:宽高比4.94,宽度1.81 mm,节距6.33 mm。对最优参数组合下的条纹中板与光滑中板的耐磨性进行仿真和试验对比,结果表明:最优耐磨参数组合下的条纹中板具有良好的耐磨性能,与光滑中板相比,磨损质量减小78.54%。分析其耐磨机理发现,条纹凸体对煤散料的流动具有分流和导向作用,缓解了中板表面的受力,使磨损深度减小。

关键词: 刮板输送机, 中部槽, 响应面法, 条纹仿生, 耐磨

Abstract: To improve wear resistance of middle trough of scraper conveyors, a bionic middle plate was designed as bionic prototype with scallop shell and pangolin scales non-smooth stripe structure. Based on single factor method and response surface method, wear analyses were performed to explore the optimal parameters of wear-resistant bionics while taking wear depth as response value. Results show that the significant effects from large to small are sorted as follows, width, ratio of width to height and pitch. And the interactions between ratio of width to height and width of stripe are the most obvious. Under certain working conditions(coal particle size of 6~8 mm, load of 20 N, scraper chain speed of 0.65 m/s), an optimal combination of wear resistance parameters of striped structure is width to height ratio of 4.94 mm, width of 1.81 mm, and a pitch of 6.33 mm. The wear resistance of striped middle plate under the optimal parameter combination was compared with the smooth middle plate through simulations and experiments. Results show that the striped middle plate under the optimal combination of wear-resistant parameters has good anti-wear performance, and the wear mass may decrease 78.54% in comparison with the smooth middle plate. The wear resistance mechanism was analyzed, and it is found that the striped convex body has a diversion and guiding effect on the flow of bulk coal, which relieves the stress on the middle plate surface and reduces the wear depth. 

Key words: scraper conveyor, middle trough, response surface method, stripe bionics, wear resistance

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