Earth Drilling Device

Abstract

The invention relates to an earth drilling device with a housing, a percussion piston which can be moved back and forth in the housing and a supply line for an operating medium for moving the percussion piston, wherein the supply line is arranged at the end of the housing, and the end of the housing tapers backwards in the longitudinal direction, in particular conically, in the region of the supply line and at the end with the supply line there is a connection feature by means of an opening formed at the end which is at least partially radially accessible.

Claims

1. An earth drilling device (1) having a housing (2), a percussion piston which can be moved back and forth in the housing (2) and a supply line (4) for an operating medium for moving the percussion piston, wherein the supply line (4) is arranged at the end of the housing (2), and the end (5) of the housing (2) tapers backwards in the longitudinal direction, in particular conically, in the region of the supply line (4) and a connection possibility is provided at the end (5) with the supply line (4) by means of an opening (6) formed at the end, which is at least partially radially accessible.

2. The earth drilling device (1) in particular according to claim 1, having a housing (2) and a percussion piston which can be moved back and forth in the housing (2) and a supply line (4) for an operating medium for moving the percussion piston, wherein the end (5) of the housing (2) tapers backwards in the longitudinal direction, in particular conically, in the region of the supply line (4) and an element of a connection pair is provided on the outside of the end (5), wherein the connection pair has the element and a counter element, and the element is designed for an optional connection to interact with the counter element.

3. The earth drilling device (1) according to claim 1 or 2, wherein the end (5) of the housing (2) tapers conically backwards in the longitudinal direction in the region of the supply line (4).

4. The earth drilling device (1) according to claim 1 or 3, wherein the opening (6) is formed in a wall of the housing (2).

5. The earth drilling device (1) according to any one of claims 1 to 4, wherein the opening (6) has an edge which is at least partially at a distance from the longitudinal axis of the housing (2) which is less than the distance of the maximum outer diameter of the housing (2) from the longitudinal axis of the housing (2).

6. The earth drilling device (1) according to claim 1 or 5, wherein the opening (6) is connected to a gap (9) extending longitudinally along the supply line (4) between the supply line (4) and the housing (2).

7. The earth drilling device (1) according to any one of claims 1 to 6, wherein the opening (6) is arranged within a conical region.

8. The earth drilling device (1) according to any one of claims 1 to 7, wherein a recess (7) extending at least partially along the circumference is provided, which recess is connected to the opening (6).

9. The earth drilling device (1) according to claim 8, wherein the recess (7) has a depth which substantially corresponds to the diameter of the opening (6).

10. The earth drilling device (1) according to any one of claims 1 to 9, wherein a seal adapted to the opening (6) is provided, which seal can be locked to the opening (6).

11. A system comprising the earth drilling device (1) according to any one of claims 1 to 10, an attachment (13) which has an end-side, in particular conical, receptacle adapted to the end (5) of the housing (2) in the region of the supply line (4) for receiving the end (5) which tapers backwards, in particular conically, and a step within the attachment (13), wherein the inner wall of the attachment (13) extends substantially parallel to the longitudinal direction, and an at least partially flexible connecting element (8) which is designed to be guided through the opening (6) and fastened.

12. The system according to claim 11, wherein the connecting element (8) has a loop (11) at one end and a connection feature (12) for extending the connecting element (8) at the other end.

13. The system according to claim 11 or 12, wherein a plurality of attachments (13) are provided which differ in the diameter of the inner wall.

14. A method for fastening an at least partially flexible connecting element to an earth drilling device, in particular an earth drilling device according to any one of claims 1 to 10 or an earth drilling device which is part of the system according to any one of claims 11 to 13, wherein the earth drilling device has a housing, a percussion piston which can be moved back and forth in the housing and a supply line for an operating medium for moving the percussion piston, and the supply line is arranged at the end of the housing, wherein the end of the housing tapers backwards in the longitudinal direction, in particular conically, in the region of the supply line and at the end with the supply line there is a connection feature by means of an opening provided at the end which is at least partially radially accessible, and a longitudinally accessible gap is provided between the end of the housing in the region of the supply line and the supply line, through which gap one end of the at least partially flexible connecting element is guided along and through the opening and is fastened to the end.

15. Use for fastening of an at least partially flexible connecting element to an earth drilling device, in particular an earth drilling device according to any one of claims 1 to 10 or an earth drilling device which is part of the system according to any one of claims 11 to 13, wherein the earth drilling device has a housing, a percussion piston which can be moved back and forth in the housing and a supply line for an operating medium for moving the percussion piston, and the supply line is arranged at the end of the housing, wherein the end of the housing tapers backwards in the longitudinal direction, in particular conically, in the region of the supply line and at the end with the supply line there is a connection feature by means of an opening provided at the end which is at least partially radially accessible, and a longitudinally accessible gap is provided between the end of the housing in the region of the supply line and the supply line, wherein the opening is used to connect an at least partially flexible connecting element arranged in the gap to the housing, in that one end of the connecting element can be guided through the opening and the end of the connecting element can be connected to the end of the housing.

Description

FIGURES

[0053] In particular:

[0054] FIG. 1 is a schematic view of one end of an earth drilling device with a supply line for supplying an operating medium;

[0055] FIG. 2 shows the view of FIG. 1 with the connecting element fastened to the end;

[0056] FIG. 3 shows the view of FIG. 2 with an attachment placed on the end; and

[0057] FIG. 4 is a detailed view of one end of an earth drilling device according to FIG. 1 in a partially sectioned representation.

DESCRIPTION OF THE FIGURES

[0058] In the following, the invention will be explained in greater detail with reference to an exemplary embodiment illustrated in drawings.

[0059] FIG. 1 shows a schematic representation of an end region of an earth drilling device 1 designed as a mole. The earth drilling device 1 has a housing 2 in which a percussion piston is present in a section 3. The percussion piston can be set into an oscillating back and forth movement by means of a supplied operating medium, in this case compressed air. A supply line 4 is provided for the supply of the operating medium.

[0060] The supply line 4 is arranged longitudinally at the end 5 of the housing 2. The drill head tip at the other end of the housing 2 is not shown.

[0061] The end 5 of the housing 2 is designed as a screwed and glued insert in a tubular section 15 of the housing 2 (see FIG. 4). The end 5 is conically tapered, with the end 5 tapering conically backwards in the opposite direction to the direction of propulsion.

[0062] An opening 6 is provided at the end 5 for connecting attachment options, in particular a feature for bracing pipes to be pulled in when drilling the earth bore with the earth drilling device 1. The opening 6 is arranged in the region of a groove 7 which extends around the circumference of the end 5.

[0063] The opening 6 is formed in an (outer) wall of the housing 2, which is exposed in the embodiment shown in FIGS. 1 and 2.

[0064] FIG. 2 shows the state after which a connecting element 8 has been guided through the gap 9 between the supply line 4 and the end 5 of the housing 2 and led out through the opening 6. The connecting element 8 has a flexible elongated section 10 which is designed like a rope.

[0065] To simplify the connection, the section 10 is designed with a loop 11 which is looped around the outside of the earth drilling device 1 and placed in the groove 7. Under tensile stress, section 10 remains in groove 7 and the connecting element is fastened to the housing 2 or end 5.

[0066] To extend the connecting element 8, the connecting element 8 has a fastening 12 by means of which a further flexible elongated section can be connected to the connecting element 8.

[0067] FIG. 3 shows the state after an attachment 13 has been pushed onto the end 5. The attachment 13 covers the groove 7 and the section 10 of the connecting element 8 located therein. A pipe can be inserted into the attachment 13 and clamped to the earth drilling device 1 by means of the extended connecting element 8.

[0068] FIG. 4 shows a detailed view of one end of an earth drilling device 1 according to FIG. 1 in a partially sectioned view, wherein in particular the end 5 of the housing 2 is shown in section in a side view. The end 5 of the housing 2 is connected to the tubular section 15 of the housing 2 (simply referred to as tubular housing section 15). The connection can be made by means of a screw connection and/or gluing (not shown). For screwing, the tubular housing section 15 can have an internal thread and the end 5 an external thread.