横轴式掘进机截割头2种截齿排布形式的对比分析

Contrast Analysis of Two Style of Pick Arrangement for Cutting Head of Transverse Type Roadheader

根据横轴式掘进机的工作特点,对截割头的设计要素进行了分析,介绍了横轴式截割头截齿排布螺旋线的设计方法及截齿空间定位的表示方法。通过分析4螺旋线和6螺旋线截割头的截线间距和圆周角间距参数,从有效截齿数和截割力两方面对这2种截割头的设计性能进行了研究计算和对比分析,得出了2种截割头各自的性能特点。分析结果表明:当工作条件相同时,按1线3齿排列的S形截割头可获得较小的截线间距和较大的截割力,截割载荷稳定,适宜于硬岩截割。

According to the working characteristics of transverse type roadheader, elements of cutting head design were analyzed, and design method of helix of transverse cutting head and representation of pick arrangement are described. By analyzing cutting line spacing and circumferential spacing of 4 helix and 6 helix cutting head separately, design performance of these two cutting heads are calculated cutting head with arrangement of 3 picks pre line can obtain smaller line spacing and more cutting force, and load of cutting is stable, which is suitable for hard rock cutting.