Drill head for earth boring, Drilling device for earth boring having the drill head, Method to detect objects while earth boring and Use of a receiver for receiving a radio signal in a drill head for earth boring

Abstract

A drill head for earth boring, in particular for a horizontal drilling device, includes a housing, a transmitter for generating a radio signal, an antenna and a receiver for receiving a reflected radio signal, wherein the receiver is adapted such that the reflected radio signal can be transmitted unprocessed to a device above ground.

What is claimed is: 
     
         1 . Drill head for earth boring, in particular for a horizontal drilling device, comprising a housing, a transmitter for generating a radio signal, an antenna and a receiver for receiving a reflected radio signal, characterized in that the receiver is adapted such that the reflected radio signal can be transmitted unprocessed to a device above ground. 
     
     
         2 . Drill head according to  claim 1 , characterized in that the receiver is coupled to a signal transmitter and the signal transmitter is adapted to transmit the reflected radio signal received by the receiver unprocessed to a device above ground. 
     
     
         3 . Drill head according to  claim 1 , characterized in that the device above ground is adapted to receive the unprocessed reflected radio signal wirelessly. 
     
     
         4 . Drill head according to  claim 1 , characterized in that the receiver is coupled to a cable or wire being connected to a connecting element for transmission of the reflected radio signal to a connection element of a drill rod segment connectable to the drill head. 
     
     
         5 . Drill head according to  claim 1 , characterized in that the drill head comprises a location acquisition device and the receiver is adapted to transmit data of the location acquisition device together with the reflected radio signal to a device above ground. 
     
     
         6 . Drill head according to  claim 5 , characterized in that the receiver is adapted to transmit the reflected radio signal and the data of the location acquisition device by discrete multitoned modulation. 
     
     
         7 . Drilling device for earth boring, in particular a horizontal drilling device, characterized in that the drilling device comprises:
 a drill head for earth boring, in particular for a horizontal drilling device, comprising a housing, a transmitter for generating a radio signal, an antenna and a receiver for receiving a reflected radio signal, characterized in that the receiver is adapted such that the reflected radio signal can be transmitted unprocessed to a device above ground; and   a device above ground.   
     
     
         8 . Drilling device according to  claim 7 , characterized in that the device above ground is adapted to steer the drill head. 
     
     
         9 . Drilling device according to  claim 7 , characterized in that the device above ground is adapted to visualize the reflected radio signal and/or the data of a location acquisition device. 
     
     
         10 . Drilling device according to  claim 8 , characterized in that the device above ground is adapted to steer the drill head in response to the reflected radio signal and/or the data of a location acquisition device. 
     
     
         11 . Method to detect objects while earth boring comprising the steps: transmitting a radio signal from a drill head; and receiving a reflected radio signal via a receiver in the drill head, characterized by transmitting the received reflected radio signal unprocessed to a device above ground. 
     
     
         12 . Method according to  claim 11 , characterized by transmitting the received reflected radio signal via a wire through the drill head and drill rod segments being connected to the drill head. 
     
     
         13 . Method according to  claim 11 , characterized by transmitting the reflected radio signal together with data of a location acquisition device, especially by discrete multitoned modulation. 
     
     
         14 . Method according to  claim 11 , characterized by steering the drill head in response to the reflected radio signal.