Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium
AssigneeTRACTO-TECHNIK GmbH & Co. KG
InventorFranz-Josef Puttmann
Life of this patent
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Abstract
The invention relates to a method for horizontal ground drilling, in particular for rock drilling, by means of a ground drilling apparatus which can be driven forward in rotation and percussively, the apparatus having compressed air and drilling medium applied to it alternately or simultaneously, and the compressed air and the drilling medium being supplied via one channel.
Claims15
A method for operating a ground drilling apparatus, whereas said drilling apparatus is driven forward alternately either in rotation, percussively, or combined in rotation and percussively, characterized in that compressed air is fed to said drilling apparatus during the percussive drilling and a drilling medium is fed to said drilling apparatus during the rotational drilling, whereas the compressed air and the drilling medium is supplied via the same channel, and further characterized in that film-forming additives are admixed to the drilling medium.
An apparatus for horizontal ground drilling, that can be operated percussively and in rotation, having a drilling and impact tool, an impact piston and a media feed line, characterized in that the media feed line has a channel which is constructed in such a way that said channel can alternately supply compressed air to the impact piston and a drilling medium to the drilling head and that the channel has a device for connecting and disconnecting the feed line of the compressed air and/or the drilling medium to the impact piston drilling head.
Dependencies are inferred from the claim text.