截割头载荷对掘进机机身偏向角的影响规律分析

Analysis of influence regularity of cutting head load to roadheader's deviation angle

为研究悬臂式掘进机截割过程中截割头载荷对机身偏向角的影响规律,建立了掘进机机身偏向角动力学模型,根据模型求解的输入问题,提出了一种截割头载荷计算方法,并通过仿真计算得到截割头载荷与驱动油缸压力及悬臂截割位置之间的关系。对掘进机截割过程中机身偏向角的变化进行了仿真分析,得到了不同工况下和不同悬臂截割位置时截割头载荷对掘进机机身偏向角的影响规律:横向截割工况下,机身偏向角随截割头载荷的增大而增大,且在悬臂水平摆角为14°时达到最大值;纵向截割工况下,机身偏向角随截割头载荷的增大而减小,且悬臂垂直摆角越大,机身偏向角越小。

In order to obtain influence regularity of cutting head load to deviation angle of boom-type roadheader during cutting process,a dynamical model of roadheader＇s deviation angle was established.According to input problem solved by the model,a calculation method of the cutting head load was proposed,and relationship between the cutting head load and pressure of driving cylinders and cutting position of cutting arm was obtained by simulating calculation.The variation of roadheader＇s deviation angle during cutting process was simulated and analyzed,and influence regularity of the cutting head load to the deviation angle in different cutting conditions and different cutting positions of the cutting arm were obtained：In horizontal cutting condition,the deviation angle increases with increasing of the cutting head load,and it reaches to the maximum when the horizontal angle of the cutting arm is 14°;in vertical cutting condition,the deviation angle decreases with increasing of the cutting head load,and the larger vertical angle of the cutting arm is,the smaller the deviation angle is.