Boring Head for Metal Tubing

Abstract

A boring head for steel tubing is provided. The boring head for metal tubing comprises a cylindrical body, a conic point, and engaging female threads. The cylindrical body has inner wall and outer wall portions with predetermined inner and outer diameters respectively, and comprises a front opening, a rear opening, and a concentric rear end portion. The conic point is configured to penetrate and bore a hole through an external medium. The engaging female threads are configured to receive and engage a metal tube put into the cylindrical body, and the metal tube includes engaging male threads that are corresponding to the engaging female threads. The conic point makes a hole through the external medium, being pushed by the metal tube and leading the metal tube. In addition, the boring head may be provided with a hammering member to be engaged to the rear end of the metal tube.

Claims

1. A boring head for metal tubing, the boring head comprising: a cylindrical body having an inner wall portion and an outer wall portion with a predetermined inner diameter and a predetermined outer diameter respectively, and comprising a front opening, a rear opening, and a concentric rear end portion; a conic point extending from the front opening of the cylindrical body, and configured to penetrate and bore a hole through an external medium; and first engaging female threads provided on a portion of the inner wall portion of the cylindrical body and configured to receive and engage a metal tube put into the cylindrical body, wherein the metal tube is configured to include first engaging male threads that are corresponding to the first engaging female threads, wherein the conic point makes a hole through the external medium, being pushed by the metal tube and leading the metal tube through the hole through the external medium.

2. The boring head of claim 1, wherein the conic point has a predetermined cross-sectional angle, which is determined by the external medium.

3. The boring head of claim 2, wherein the predetermined cross-sectional angle is from about 15 degrees to about 45 degrees.

4. The boring head of claim 3, wherein the predetermined cross-sectional angle is from about 20 degrees to about 30 degrees.

5. The boring head of claim 4, wherein the predetermined cross-sectional angle is about 25 degrees.

6. The boring head of claim 1, wherein the thickness of the cylindrical body is approximately one fourth to one sixth of the diameter of the inner diameter of the cylindrical body.

7. The boring head of claim 1, wherein the cylindrical body and the conic point are formed monolithically.

8. The boring head of claim 7, wherein the cylindrical body and the conic point are made of stainless steel.

9. A boring system for a metal tubing, the boring system comprising: a boring head according to claim 1; and a hammering member configured for receiving a rear end of the metal tube and being hit by an external force to drive the boring head into the external medium.

10. The boring system of claim 9, wherein the hammering member comprising: an engaging portion including second engaging female threads and configured to receive the rear end of the metal tube, wherein the metal tube comprises second engaging male threads corresponding to the second engaging female threads; and a hammering portion extended from the engaging portion and configured to be hit by an external force.

11. The boring system of claim 10, wherein the engaging portion has a cylindrical shape and includes an inner wall portion and an outer wall portion.

12. The boring system of claim 11, wherein the second engaging female threads are provided on the inner wall portion of the hammering member.

13. The boring system of claim 12, wherein the hammering portion has a cylindrical shape.

14. The boring system of claim 12, wherein the hammering portion has a polygon pipe shape.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] These and other features, aspects and advantages of the present invention will become better understood with reference to the accompanying drawings, wherein:

[0039] FIG. 1 is a perspective view of a boring head installed on an end of a metal tube according to an embodiment of the invention;

[0040] FIG. 2 is a perspective view of a boring system installed with a metal tube according to an embodiment of the invention;

[0041] FIG. 3 is a perspective view of a boring head according to an embodiment of the invention;

[0042] FIG. 4 is a perspective view of a hammering member according to another embodiment of the invention;

[0043] FIG. 5 is a perspective view of a hammering member installed at a read end of a metal tube driven into a soil medium according to an embodiment of the invention; and

[0044] FIG. 6 is a perspective view of a boring system installed with a metal tube according to an embodiment of the invention.

DETAILED DESCRIPTION EMBODIMENTS OF THE INVENTION

[0045] Referring to the figures, the embodiments of the invention are described in detail.

[0046] An aspect of the invention provides a boring head for steel tubing.

[0047] The boring head for metal tubing comprises a cylindrical body, a conic point, and a first engaging female threads.

[0048] The cylindrical body has an inner wall portion and an outer wall portion with a predetermined inner diameter and a predetermined outer diameter respectively, and comprises a front opening, a rear opening, and a concentric rear end portion.

[0049] The conic point extends from the front opening of the cylindrical body, and is configured to penetrate and bore a hole through an external medium.

[0050] The first engaging female threads are provided on a portion of the inner wall portion of the cylindrical body and configured to receive and engage a metal tube put into the cylindrical body, and the metal tube is configured to include first engaging male threads that are corresponding to the first engaging female threads.

[0051] The conic point makes a hole through the external medium, being pushed by the metal tube and leading the metal tube through the hole through the external medium.

[0052] The conic point may have a predetermined cross-sectional angle, which is determined by the external medium.

[0053] The predetermined cross-sectional angle may be from about 15 degrees to about 45 degrees.

[0054] The predetermined cross-sectional angle may be from about 20 degrees to about 30 degrees.

[0055] The predetermined cross-sectional angle may be about 25 degrees.

[0056] The thickness of the cylindrical body may be approximately one fourth to one sixth of the diameter of the inner diameter of the cylindrical body.

[0057] The cylindrical body and the conic point may be formed monolithically.

[0058] The cylindrical body and the conic point may be made of stainless steel.

[0059] Another aspect of the invention provides a boring system for a metal tubing, which comprises a boring head and a hammering member.

[0060] The boring head is similar to the one in the previous embodiment.

[0061] The hammering member is configured for receiving a rear end of the metal tube and hit by an external force to drive the boring head into the external medium.

[0062] The hammering member comprises an engaging portion and and a hammering portion.

[0063] The engaging portion includes second engaging female threads and configured to receive the rear end of the metal tube, and the metal tube comprises second engaging male threads corresponding to the second engaging female threads.

[0064] The hammering portion is extended from the engaging portion and configured to be hit by an external force.

[0065] The engaging portion may have a cylindrical shape and include an inner wall portion and an outer wall portion.

[0066] The second engaging female threads are provided on the inner wall portion of the hammering member.

[0067] The hammering portion may have a cylindrical shape.

[0068] Alternatively, the hammering portion may have a polygon pipe shape.

[0069] In FIG. 1, the situation in which the boring head according to the invention is about to be inserted into the external medium, the soil. The other external pipe system may be around as illustrated. The metal pipe 900 needs to be installed through the soil, a portion of which may be covered another medium such as concrete pavement. In such an environment, the boring head 100 may be installed at the front end of the metal tube 900 and be pushed through the medium easily without disturbing the surface structure of the soil.

[0070] In FIG. 2, of course, a very short metal tube 900 is shown, in order to show how the boring head 100 and the hammering member 120 are installed on the metal tube 900. In a real situation, the metal tube 900 may be very long, so as to penetrate into some external medium.

[0071] In FIG. 5, the metal tube 900 is already pushed through the external medium, by hammering a metal, rubber, or wooden hammer (not shown) on the rear surface of the hammering member 120.

[0072] In FIG. 6, the rope is not a part of the invention.

[0073] While the invention has been shown and described with reference to different embodiments thereof, it will be appreciated by those skilled in the art that variations in form, detail, compositions and operation may be made without departing from the spirit and scope of the invention as defined by the accompanying claims.