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一、液压凿岩机发展提出的新问题 60年代中期以来,尤其是最近十几年里,液压凿岩机发展迅速,已在世界范围内得到广泛应用,形成全面取代气动凿岩机的趋势。与气动凿岩机相比,液压凿岩机有何特点? 至1985年,国外有17个厂家供应68个型号的液压凿岩机,其主要作业性能参数归纳列于下表。由表可知,液压凿岩机的作业性能参数比气动凿岩机高得多,适用工况也要广阔得多,特别值得注意的是,液压凿岩机配装的扭矩,要比相应的气动凿岩机大得多,且其扭转能量常常超过冲击能量。比如,YGZ
First, the new problems raised by the development of hydraulic rock drill Since the mid-1960s, especially in the last ten years, the rapid development of hydraulic rock drill has been widely applied worldwide, forming a trend of completely replacing the pneumatic rock drill. Compared with pneumatic rock drill, hydraulic rock drill what characteristics? By 1985, 17 foreign manufacturers to supply 68 models of hydraulic rock drill, the main operating performance parameters are summarized in the table below. It can be seen from the table that the operating performance parameters of the hydraulic rock drill are much higher than those of the pneumatic rock drill and the applicable conditions are also much broader. In particular, it is worth noting that the hydraulic rock drill equipped torque is much larger than the corresponding pneumatic rock drill, and Its torsional energy often exceeds the impact energy. For example, YGZ