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<p>Aiming at the starwheel loading mechanism of roadway tunneling equipment, the problems of coal returning and low loading efficiency are caused by the unknown matching mechanism between the profiled starwheel teeth number and the coal rock particle diameter. Through the 80 kinds of working condition planning simulations of the combination of profiled starwheel gear teeth number, rotational speed, and coal rock particle diameter, explore the relationship between the profiled wheel teeth number and coal rock particle diameter adaptability. Propose the evaluation criteria of profiled wheel teeth number adaptability composed of three indexes of loading quality, coal returning quality, and loading power. Reveal the change rule of the influence of the profiled wheel teeth number, rotational speed, and coal rock particle diameter on the evaluation indexes. The results show that when n = 50&#xa0;rpm, profiled starwheels loaded with 30–50&#xa0;mm coal rock dumped the minimum mass of coal, maximum loading mass when loading 30–50&#xa0;mm coal rock with three- and four-tooth starwheels, 20–30&#xa0;mm coal rock with five-tooth starwheels, 10–20&#xa0;mm coal rock with six-tooth starwheels, and 5–10&#xa0;mm coal rock with seven-tooth starwheels; negative correlation of dumped coal mass with starwheel speed and coal rock particle size; loading power increases with increasing starwheel speed and coal rock particle size. The research results provide a theoretical basis and data support for the selection of the number of teeth of the profiled wheel loading mechanism, the optimization of matching the nature of coal and rock, and the continuous and efficient operation.</p>

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Research on the suitability between the profiled wheel teeth number of starwheel loading mechanism and the coal rock particle diameter

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Hong Zhang,
  • Lu Yang,
  • Wenzhou Chen,
  • Qian Feng,
  • Jingang Zhang

摘要

Aiming at the starwheel loading mechanism of roadway tunneling equipment, the problems of coal returning and low loading efficiency are caused by the unknown matching mechanism between the profiled starwheel teeth number and the coal rock particle diameter. Through the 80 kinds of working condition planning simulations of the combination of profiled starwheel gear teeth number, rotational speed, and coal rock particle diameter, explore the relationship between the profiled wheel teeth number and coal rock particle diameter adaptability. Propose the evaluation criteria of profiled wheel teeth number adaptability composed of three indexes of loading quality, coal returning quality, and loading power. Reveal the change rule of the influence of the profiled wheel teeth number, rotational speed, and coal rock particle diameter on the evaluation indexes. The results show that when n = 50 rpm, profiled starwheels loaded with 30–50 mm coal rock dumped the minimum mass of coal, maximum loading mass when loading 30–50 mm coal rock with three- and four-tooth starwheels, 20–30 mm coal rock with five-tooth starwheels, 10–20 mm coal rock with six-tooth starwheels, and 5–10 mm coal rock with seven-tooth starwheels; negative correlation of dumped coal mass with starwheel speed and coal rock particle size; loading power increases with increasing starwheel speed and coal rock particle size. The research results provide a theoretical basis and data support for the selection of the number of teeth of the profiled wheel loading mechanism, the optimization of matching the nature of coal and rock, and the continuous and efficient operation.