采煤机螺旋滚筒失效原因分析及改进
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摘要
采煤机螺旋滚筒是采煤机用于完成落煤和装煤的关键部件,滚筒失效是影响工作面正常生产的主要因素。为了延长滚筒的使用寿命,通过对失效滚筒损坏部位的分析,总结了滚筒失效的主要形式。以采煤机破煤理论为基础,分析了滚筒失效的主要原因,针对各失效形式,提出了相应的改进措施。研究表明,滚筒齿座的失效和尾部叶片的失效是滚筒失效的主要形式。通过对滚筒叶片参数的改进、端盘补块的布置及叶片末端齿座的保护,可有效延缓滚筒失效,延长其使用寿命。该结果为采煤机螺旋滚筒的设计及优化提供了参考。
The spiral drum of the shearer is the key component to complete coal cutting and coal loading. The failure of drum is the main factor affecting normal production of coal face. In order to prolong the service life of the drum, the paper analyzed the damaged location of the drum, and concluded the main modes of the drum failure. Based on the coal-cutting theory of the shearer, the paper analyzed the main causes of the drum failure, and proposed improvement measures corresponding to each failure mode. The research showed the failure of the tooth holders of the drum and the failure of the tail blades were the main modes of the drum failure. After the improvement of the parameters of the drum blade, the layout of the additional block at the end disc and the protection of the tooth holder at the end of the blade, the drum failure could effectively delayed, and its service life prolonged too. The results offered reference for the design and the optimization of the spiral drum of the shearer.
The spiral drum of the shearer is the key component to complete coal cutting and coal loading. The failure of drum is the main factor affecting normal production of coal face. In order to prolong the service life of the drum, the paper analyzed the damaged location of the drum, and concluded the main modes of the drum failure. Based on the coal-cutting theory of the shearer, the paper analyzed the main causes of the drum failure, and proposed improvement measures corresponding to each failure mode. The research showed the failure of the tooth holders of the drum and the failure of the tail blades were the main modes of the drum failure. After the improvement of the parameters of the drum blade, the layout of the additional block at the end disc and the protection of the tooth holder at the end of the blade, the drum failure could effectively delayed, and its service life prolonged too. The results offered reference for the design and the optimization of the spiral drum of the shearer.
引文
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[11]宋泽锋,雷凯凯,陶欣铮.小直径采煤机螺旋滚筒装煤率的研究[J].煤矿机械,2015,36(5):85-86.
[2]保晋BЗ,乜拉麦德BЗ,顿B B.采煤机破煤理论[M].王庆康,门迎春,译.北京:煤炭工业出版社,1992:93-233.
[3]王河山,俎付生.采煤机滚筒的失效原因与对策[J].煤矿机电,2014(5):128-129.
[4]郝志勇,张佩,闫闯,等.采煤机端盘截齿载荷特性研究[J].机械强度,2017,39(2):360-366.
[5]赵丽娟,何景强,许军,等.截齿排列方式对薄煤层采煤机载荷的影响[J].煤炭学报,2011,36(8):1401-1406.
[6]牛东民.螺旋滚筒叶片尾端磨损原因分析[J].煤矿机电,1993(5):4-6.
[7]史秀宝,曹志娟,袁泽清.滚筒末端齿座磨损原因的模拟分析[J].矿山机械,2017,45(8):9-12.
[8]刘送永,杜长龙,崔新霞.采煤机滚筒截齿排列的试验研究[J].中南大学学报(自然科学版),2009,40(5):1281-1287.
[9]李晓豁,吕明,史秀宝,等.两种不同截齿排列截割头性能的比较[J].辽宁工程技术大学学报(自然科学版),2010,29(1):136-138.
[10]李晓豁,李婷,焦丽,等.滚筒采煤机截割载荷的模拟系统开发及其模拟[J].煤炭学报,2016,41(2):502-506.
[11]宋泽锋,雷凯凯,陶欣铮.小直径采煤机螺旋滚筒装煤率的研究[J].煤矿机械,2015,36(5):85-86.