Tracto-technik Gmbh & Co. Kg

Peter Grass

Franz-Josef Püttmann

Gerhard Völkel

Meinolf Rameil

Andreas Riekes

Frank Prutti

The invention relates to an earth drilling device () for boring a borehole into the soil and/or for drawing a line () into an underground passage, comprising at least one system line () extending from the earth drilling device to a start region, wherein the system line is designed in an electrically insulating manner.

Earth drilling device

A boring element of a ground boring device includes a housing having a receptacle, a transmitter arranged in the receptacle of the housing and supported in the receptacle for movement in a longitudinal-axial direction of the boring element, and a front buffer connecting the transmitter with the housing. The transmitter moves towards a rear in the receptacle as a result of a deformation of the front buffer, when a rear percussive impulse is applied to the boring element, without the transmitter coming directly into contact with another part of the boring element.

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Lennestadt, Germany

Peter Grass