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按照试验规范,采煤机整机地面试验主要分空载试验和切割人造煤壁试验两大部分。在切割人造煤壁的试验中,目前国内外都是让采煤机以三四种不同的牵引速度切割人造煤壁,每种速度切割煤壁1min左右。这样4种不同的牵引速度就需切割10m左右的人造煤壁。在未配置计算机以前,所测录的数据只能存入模拟磁带机或由紫外线示波器绘出时域曲线,无法立刻作出精确的关系曲线。本文所要介绍的试验方法是每隔10—20s变化一次牵引速度,在整个速度变化范围
In accordance with the test specification, shearer machine ground test mainly sub-load test and cut artificial coal wall test two major parts. In the experiment of cutting man-made coal wall, at present, both domestic and overseas let the shearer cut man-made coal wall with three or four kinds of different pulling speeds, and cut the coal wall at every speed for about 1 min. This 4 kinds of different traction speed need to cut about 10m artificial coal wall. Before the computer is not configured, the measured data can only be stored in the analog tape drive or by the UV oscilloscope plot the time domain curve, can not immediately make an accurate curve. This article describes the test method is to change every 10-20s traction speed, the entire speed range