Abstract
The invention relates to a device for locating a drill head of a ground drilling device, comprising a wireless probe, the probe being arranged on or in a flying object.
Claims
1. A device for locating a drill head of a ground drilling device, comprising a wireless probe, wherein the probe is arranged on or in a flying object.
2. The device according to claim 1, wherein the device is actuated by means of a program, which is stored in a memory of the device, and which is adapted such that the flying object flies in a predetermined pattern.
3. The device according to claim 1, wherein a region can be entered at an input device, which can be flown over by the flying object.
4. A system comprising the device according to claim 1, further comprising a drill head or a section of a drill string following the drill head, wherein the drill head or section comprises a holder for a transmitter.
5. A method for locating a drill head of a ground drilling device, wherein a probe is moved over the earth, characterized by overflying the earth by means of a flying object, the probe being arranged on or in it.
6. The method according to claim 5, characterized in that the earth is flown over in a predetermined pattern.
7. The method according to claim 5, characterized in that a region is entered which is overflown by the flying object.
8. (canceled)
Description
[0023] The invention shall now be explained more closely with the aid of exemplary embodiments represented in the drawing.
[0024] There are shown in the drawings:
[0025] FIG. 1 a schematic representation of a device for locating a drill head of a ground drilling device;
[0026] FIG. 2a, b patterns for a region below which a drill head being located is situated, and how the region can be overflown.
[0027] FIG. 1 shows a ground drilling device 1 with which an earth borehole is being made in the earth. The ground drilling device 1 drives a drill head 2 into the earth. The drill head 2 is arranged at the end of a drill string 3. A transmitter 4, which is arranged in the drill head 2 or in a section of the drill string 3 following the drill head 2, sends out electromagnetic signals. The electromagnetic signals can be received by a probe 5. By means of the probe 5, the transmitter 4 can be located in the earth. By locating the transmitter 4, it is possible to locate the drill head 2. The probe 5 is arranged on a flying object 6. Besides a receiver for the electromagnetic signals of the transmitter 4, the probe 5 comprises a transmitter which in turn sends out a signal which can be received by a receiver 7 on the ground drilling device 1. The signal which is sent by the probe 5 to the receiver 7 can be coordinated with a position in space and points to the location of the transmitter 4, so that the location of the transmitter 4 is known at the ground drilling device 1. From the determined location of the transmitter 4, a deviation from the target position of the earth borehole being made can be determined and steps taken to counteract any deviation.
[0028] FIG. 2a shows schematically a substantially rectangular region 8 beneath which a drill head 2 with the transmitter 4 is suspected to be. The flying object 6 can overfly the region 8 in a predetermined pattern 9, which contains line-shaped regions. The pattern 9 is shown by broken lines in FIG. 2a. In this way, a region 8 can be systematically overflown in order to locate a drill head 2. FIG. 2b likewise shows a region 8 beneath which a drill head 2 is suspected to be, and which is being located. The region 8 can be overflown by means of the flying object 6 on which the probe 5 is arranged by means of the spiral pattern 9 represented in FIG. 2b. When the location of the probe 5 is determined, a deviation from the pattern 9 can be done and the probe 5 can be optimized by means of the flying object 6 to the location of the transmitter 4.
