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今年一月,我矿综采一队因采掘部署变化,从上水平搬到下水平工作面生产,全套综采设备必须由第一暗斜井下到新工作面。该斜井斜长218m,坡度25°,安有锦卅厂JT1200/1028型绞车一台,最大牵引力2500kg。用这台小绞车下放约12吨重的整体道梯液压支架显然是不行的,换大绞车也不可能,我们采用加滑轮组的方法降低绞车钢丝绳终端载荷重,使之小于或等于绞车最大牵引力,实现下放任务。首先从计算上分析其可能性,以下是验算的方法和结果: 1.已知条件
In January of this year, a team of mine fully mechanized coal mining was moved from upper level to lower level due to changes in mining deployment. A full set of fully mechanized mining equipment must be led from the first dark inclined shaft to the new face. The oblique pit length 218m, slope 25 °, An Jintan plant JT1200 / 1028 winch, the maximum traction 2500kg. With this small winch decentralized about 12 tons of overall weight ladder hydraulic support is obviously not work for a large winch is impossible, we use plus pulley method to reduce the winch rope end load, so that it is less than or equal to the maximum traction winch, Achieve decentralized tasks. First of all, the possibility of calculation is analyzed. The following are the checking methods and results: 1. Known conditions