Rotary drive arrangement for a drill rod
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United States of America Patent
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Jan 10, 2023
Grant Date -
Jul 21, 2022
app pub date -
Jan 6, 2022
filing date -
Jan 21, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a rotary drive arrangement for a drill rod having an outer pipe and an inner rod running at least in sections inside the outer pipe, in particular for double-head and/or overburden drilling, with a first gearbox for driving the inner rod in a rotating manner and a second gearbox for driving the outer pipe in a rotating manner, wherein the first gearbox and the second gearbox are independent of each other. According to the invention provision is made in that the first gearbox and the second gearbox are supported in a common gearbox housing and are surrounded by the same.
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