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为了增大冲锤的效力,该冲击器的冲击质量放置在岩心管之周围。于岩心管的上部,装了一个带喷嘴的喷射式活阀。冲击非经岩心管而直接地作用于与钻头相联结的移动式异径接头上。
To increase the effectiveness of the hammer, the impact mass of the impactor is placed around the core tube. In the upper part of the core tube, equipped with a nozzle injection valve. Impact directly through the core tube and drill bit associated with the removable coupling.