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YYGJ80A型液压凿岩机是长沙矿冶研究院和株洲东方工具厂等单位在YYG80型液压凿岩机的基础上改进而成的。YYG80型液压凿岩机虽于1980年通过了技术鉴定,但样机还存在工作稳定性较差的问题。1981年冶金部下达了完善与推广使用YYG80型液压凿岩机的任务。1982年冶金部把此项任务列入冶金部重点科研项目。长沙矿冶研究院和株洲东方工具厂针对YYG80型液压凿岩机存在的问题进行了改进设计。在转钎机构上,采用滑动轴承代替原来的滚动轴承,选
YYGJ80A hydraulic rock drill is Changsha Institute of Mining and Metallurgy and Zhuzhou Oriental Tools Factory and other units in the YYG80 hydraulic rock drill on the basis of improved. YYG80 hydraulic rock drill although passed the technical appraisal in 1980, but the prototype also has the problem of poor working stability. In 1981, the Ministry of Metallurgy issued the task of perfecting and popularizing the YYG80 hydraulic rock drill. In 1982, the Ministry of Metallurgy included this task in the key scientific research projects of the Ministry of Metallurgy. Changsha Institute of Mining and Zhuzhou Dongfang Tools Factory for YYG80 hydraulic rock drill existing problems were improved design. In the brazing mechanism, the use of sliding bearings instead of the original rolling bearings, election