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Mine percussion drill assembly - has striker transmitting blows to drill tool via rear end of liq. column
Mine percussion drill assembly - has striker transmitting blows to drill tool via rear end of liq. column
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机译：矿用冲击钻头组件-撞针通过液面的后端将打击传递到钻具。柱
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摘要
A channel containing a column of liq. is incorporated in a drilling rod system, with a rear end striker device imparting blows onto a drilling tool at the front end, in a percussion drilling appliance as used in mining. The striker device strikes onto the rear end of the column of liquid, transmitting its blows to the drilling tool. There is pref. a piston acting on a striker piece sealing workface connected to a gas pressure reservoir via a lead.
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