山东农业大学学报（自然科学版）2018，Vol.49Issue(2)：342-348,7.DOI:10.3969/j.issn.1000-2324.2018.02.031
斜切进刀工况下采煤机截齿切削厚度的计算与模拟
Calculation and Simulation for Cutting Thickness of a Shearer under Oblique Cutting Feed Condition
摘要
Abstract
In order to study the variation of cutting thickness on shearer oblique cutting feed condition, considering the influence of cutter tooth arrangement,initial position angle, installation angle, pitch angle, and swinging angle of fuselage, from the depth of cutting teeth that cut into the coal wall, the judging condition involved in cutting was analyzed and the calculation method of cutting thickness was deduced as well. By taking the basic parameters of the MG400/930-WD type shearer and SGZ1000/1050 type scraper conveyor as an example,and simulating the cutting thickness based on MATLAB, the following results were obtained through comparison and analysis of the simulation: under the oblique cutting feed condition,the maximum cutting thickness of cutting teeth firstly increases,then decreases,and the instantaneous thickness of cutting presents intermittent periodic variation; every cutting teeth has different starting positions in the cutting, the maximum disparity of starting positions has come to 1.08 x 104mm, and the maximum cutting thickness is about 94mm, close to twice under normal condition; the dangerous cutting area is S=1.219~1.303×104mm,. The results can be used to provide basis in analyzing and searching the change of cutting resistance of the shearer under oblique cutting feed condition, as well as the theoretical basis in improving the actual operation of shearer and predicting accidents.关键词
采煤机/斜切进刀/切削厚度Key words
Shearer/oblique cutting feed condition/cutting thickness分类
矿业与冶金引用本文复制引用
李强,张明玉..斜切进刀工况下采煤机截齿切削厚度的计算与模拟[J].山东农业大学学报（自然科学版）,2018,49(2):342-348,7.基金项目
安徽省高等学校省级教学研究项目(2016jyxm1032) （2016jyxm1032）
安徽省自然科学基金面上项目(1708085ME104) （1708085ME104）
安徽省高校自然科学研究重点项目(KJ2017A439) （KJ2017A439）
宿州学院重点科研项目(2017yzd09) （2017yzd09）
宿州学院专业带头人资助项目(2014XJZY31) （2014XJZY31）
