截齿排布圆周角对纵轴式掘进机截割头设计性能的影响  

Influence of Pick Array Circumferential Angle on Cutting Performance of Longitudinal Cutting Head

作　　者：张梦奇 

机构地区：[1]中国煤炭科工集团太原研究院,山西太原030006 [2]煤矿采掘机械装备国家工程实验室,山西太原030006

出　　处：《煤矿机电》2013年第2期19-23,共5页Colliery Mechanical & Electrical Technology

摘　　要：以变升角螺旋线纵轴式截割头为基础,采用三维设计结合仿真的方式,对截齿按等圆周角间距排布的QC型截割头和按不等圆周角间距排布的UC型截割头进行了设计计算。计算过程的外部参数均相同。当截割头转速为30r/min,横向移动速度为0.04m/s,钻入深度为截割头全长时,QC型截割头主要破岩区切屑图单元面积平均值比UC型截割头大11.7%,可获得更大的岩屑块度;且有效截齿数变动量和截割合力变动量均较小,载荷稳定性更好。仿真模拟结果表明,虽然QC型截割头制造相对复杂,但设计性能优于UC型截割头。Based on the longitudinal cutting head with variable spiral angle, the QC-type cutting head with even pick spacing circumferential angle and the UC-type with uneven pick spacing circumferential angle are designed and calculated by means of 3D design and simulation analysis. The external parameters of two cutting heads are identical. As the cutting heads rotate at 30 r/min, move at O. 04 m/s and drill in the whole length of the cutting head, the average area of chip in the main breaking region of QC cutting head is 11.7% bigger than that of UC type and the lump is larger. Furthermore, the variation of effective pick number and the cutting force are smaller, and thus the stability of load is better. The simulation results show that the QC-type cutting head is superior to the UC-type cutting head on design performance spite of its relatively complex manufacture.

关 键 词：截割头 截齿排布 圆周角 截割性能 

分 类 号：TD421.52[矿业工程—矿山机电]