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我矿现有东风-200型潜孔钻机8台。该钻机由于过分强调了体积小、重量轻,而导致结构、使用方面的各种缺陷,一度不能投产使用。对此,广大工人同志非常关心,决心要把新机器改好用好。矿党委决定成立专业攻关小组,从1972年11月开始,对4号、5号、6号、7号、8号、9号6台钻机先后进行了生产试验与不同程度地改进,取得了初步成果。主要改进部分包括钻机系统的回转、行走、提升等13项,钻具方面有4项。现已有6台投入试生产。我们曾对4、5、7号3台钻机在不同的时间里分别作了试验记录(附表)。
I mine Dongfeng -200 DTH drilling rig 8. The rig due to excessive emphasis on small size, light weight, which led to the structure, the use of various defects, was once unable to put into operation. In response, the majority of workers are very concerned about the comrades, determined to change the new machine to make good use of. The coal mine party committee decided to set up a professional research team, starting from November 1972, the No. 4, No. 5, No. 6, No. 7, No. 8 and No. 9 drilling rigs successively carried out production tests with varying degrees of improvement and achieved preliminary Results. The main improvements include drilling rig system rotation, walking, lifting 13 items, drill there are 4 items. Six units are now put into trial production. We have done on the 4,5,7,7 rigs at different times of the test records (Schedule).