Double head drilling device and method for producing a bore
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United States of America Patent
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Nov 17, 2020
Grant Date -
Mar 21, 2019
app pub date -
Aug 24, 2018
filing date -
Sep 19, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a double head drilling device for a drill rod having an outer pipe and an inner rod running at least in sections inside the outer pipe, with a first drive unit for driving the inner rod in a rotating manner and a second drive unit for driving the outer pipe in a rotating manner. According to the invention provision is made in that for the releasable clamping of the inner rod a first clamping head and a second clamping head are provided and in that the two clamping heads are supported in an axially displaceable manner with respect to each other. Furthermore, the invention also comprises a method for producing a bore with this double head drilling device.
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