首页>
外国专利>
Rotary percussive rock drill - has piston on drilling spindle hydraulically controlled by gas spring member one side
Rotary percussive rock drill - has piston on drilling spindle hydraulically controlled by gas spring member one side
展开▼
机译:旋转冲击式凿岩机-钻轴上的活塞由气弹簧部件液压控制
展开▼
页面导航
摘要
著录项
相似文献
摘要
The rock drilling machine with a guide frame carried on a tracked vehicle, has the drilling head mounted on a carriage so that it can be advanced during the drilling operation. The frame can be tilted to any required angle. The drilling head is hydraulically driven, and is operated both as a rotary and impact device. The drive shaft (11) is rotated by toothed gearing (12, 30) powered by a hydraulic motor (27) alongside, and the impact mechanism is at the rear. This mechanism also includes a cylinder (16) mounted around the shaft (11) in a chamber filled with hydraulic fluid. At the side of this chamber is a resilient element (22) controlling a hydraulic supply channel (19) for both flow directions. This element is a gas chamber which can be incorporated inside the cylinder chamber.
展开▼