CN210396652U

CN210396652U - Single-head friction welding milling type high-pressure sealing three-edged drill rod

Info

Publication number: CN210396652U
Application number: CN201921266320.6U
Authority: CN
Inventors: 王刚; 许炳锡; 王辉
Original assignee: Jiangsu Tuohai Coal Mine Drilling Machinery Co ltd
Current assignee: Jiangsu Tuohai Coal Mine Drilling Machinery Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-04-24
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a single-head friction welding milling type high-pressure sealing triangular drill rod, which comprises a rod body part and a joint part which is in friction welding, and is arranged in a hollow way; the rod body part is formed by milling a triangular prism-shaped first rod part and an extended second rod part, wherein the triangular prism-shaped first rod part is provided with one end adjacent to the head part, the first rod part is provided with three circumferentially arrayed first milling planes, the first milling planes are respectively and obliquely transited upwards to the second rod part and the joint part, and a second milling plane and a third milling plane are respectively formed; a female thread is arranged in the second rod part, and a sealing groove is annularly arranged at one end, close to the first rod part, of the female thread; the joint part is externally provided with a male thread and a sealing groove. The utility model discloses a two segmentation designs, with the pole body portion with joint portion friction weld, directly process out female screw thread at the pole body portion other end simultaneously, avoid three-section welding or whole shaping to carry out whole thermal treatment quenching and tempering to the drilling rod, improve life cycle, the structure is more stable, and the efficiency of construction is higher, saves the cost.

Description

Single-head friction welding milling type high-pressure sealing three-edged drill rod

Technical Field

The application belongs to the technical field of sealed three-edged drill rods for gas extraction in coal seams, and particularly relates to a single-head friction welding and milling type high-pressure sealed three-edged drill rod.

Background

Traditional drilling rod main part divide into 3 parts, constitute by middle body of rod and both ends joint portion, form integratively through friction weld, present triangular drilling rod comprises a triangular steel pipe and the cylindrical joint portion in both ends through friction weld, the structure is unstable, lead to the moment of torsion low, more and more the supporting use that is not suitable for high torque drill, lead to the stable demand that can not satisfy coal seam drainage gas under the current condition, and another entire body formula triangular drilling rod is by thick wall pipe direct processing into triangular structure, although the moment of torsion is big, body weight is very heavy, manufacturing cost is very high, unsuitable using widely.

SUMMERY OF THE UTILITY MODEL

In view of this, the technical problem that this application will solve is to provide a single-end friction welding mills formula high pressure seal triangular drilling rod, through two segmentation designs, with shank and joint portion friction welding, directly process out female screw thread at the shank other end simultaneously to carry out whole heat treatment quenching and tempering to the drilling rod, avoid three-section welding or integral forming, the structure is more stable, and the efficiency of construction is higher, saves the cost.

In order to solve the technical problem, the utility model discloses a single-head friction welding milling type high-pressure sealing triangular drill rod, which comprises a rod body part and a joint part which is in friction welding, and is arranged in a hollow way; the rod body part is formed by milling a triangular prism-shaped first rod part and an extended second rod part, wherein the triangular prism-shaped first rod part is provided with one end adjacent to the head part, the first rod part is provided with three circumferentially arrayed first milling planes, the first milling planes are respectively and obliquely transited upwards to the second rod part and the joint part, and a second milling plane and a third milling plane are respectively formed; a female thread is arranged in the second rod part, and a sealing groove is annularly arranged at one end, close to the first rod part, of the female thread; the joint part is externally provided with a male thread.

According to the utility model discloses an embodiment, wherein above-mentioned female thread keeps away from first pole portion one end and is equipped with the transition zone.

According to the utility model discloses an embodiment, wherein above-mentioned seal groove inlays establishes the sealing washer.

According to an embodiment of the present invention, the rod body is selected from hollow thick-walled tubes.

According to the utility model discloses an embodiment, wherein above-mentioned second pole portion latus rectum is gradually big by first pole portion latus rectum, and the joint portion latus rectum is less than first pole portion latus rectum.

Compared with the prior art, the application can obtain the following technical effects:

through two segmentation designs, with shank and joint portion friction weld, directly process out female screw thread at the shank other end simultaneously, avoid three-section welding or whole shaping to carry out whole thermal treatment quenching and tempering to the drilling rod, the structure is more stable, and the efficiency of construction is higher, saves the cost.

Of course, it is not necessary for any product to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of a single-head friction welding milling type high-pressure sealing three-edged drill rod according to an embodiment of the application;

FIG. 2 is a cross-sectional view of a single-head friction welding milling type high-pressure sealing three-edged drill rod in an embodiment of the application.

Reference numerals

The connecting structure comprises a rod body part 10, a joint part 20, a first rod part 31, a second rod part 32, a first milling plane 41, a second milling plane 42, a third milling plane 43, a female thread 50, a sealing groove 51, a transition belt 52, a sealing ring 53 and a male thread 60.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Referring to fig. 1 and 2 together, fig. 1 is a perspective view of a single-head friction welding milling type high-pressure sealing three-edged drill rod according to an embodiment of the present application; FIG. 2 is a cross-sectional view of a single-head friction welding milling type high-pressure sealing three-edged drill rod in an embodiment of the application. As shown in the figure, the single-head friction welding milling type high-pressure sealing three-edged drill rod comprises a rod body part 10 and a joint part 20 which are in friction welding, and is arranged in a hollow manner; the shank portion 10 is formed by milling a triangular prism-shaped first shank portion 31 adjacent to one end of the head portion 20 and an extended second shank portion 32, the first shank portion 31 having a circumferential array of three spaced first milling flats 41, and the first milling flats 41 being respectively inclined upwardly to transition into the second shank portion 32 and the head portion 20 to respectively form second milling flats 42 and third milling flats 43; a female thread 50 is arranged in the second rod part 32, and a sealing groove 51 is annularly arranged at one end of the female thread 50 close to the first rod part 31; the joint part 20 is externally provided with a male thread 60 and a seal groove.

The utility model discloses an in the embodiment, body of rod portion 10 is selected from the thick-walled pipe of cavity, and the centre is equipped with the blast hole, passes through friction weld with the joint portion 20 of taking the male thread, constitutes two segmentations, avoids in the past the other end still need the trouble of friction weld female joint portion. Specifically, the shank portion 10 is divided into a first shank portion 31, which is a main drill, and a second shank portion 32, which is a joint portion at the other end, by milling, the first shank portion 31 is triangular and has three first milling planes 41 formed by equally dividing and milling, and the three first milling planes 41 respectively extend obliquely upward toward the two ends, that is, the second shank portion 32 and the joint portion 20, and transition into a second milling plane 42 and a third milling plane 43. Therefore, the drilling efficiency of the triangular drill rod is kept, the hole forming effect is good, the problem that the conventional joints at two ends of the triangular drill rod are not smooth in slag discharge due to the fact that shoulders are arranged at the joints of the joints and the triangular rod body is solved, the structure of the drill rod is more stable, the service cycle is prolonged, the construction efficiency is improved, and a large amount of materials and labor cost can be saved in the aspect of production and manufacturing.

In addition, a seal groove 51 is annularly arranged at one end of the female thread 50 close to the first rod part 31, and a seal ring 53 is embedded in the seal groove 51, so that the female thread can generate a sealing effect after being connected by threads, and high-pressure water injection operation can be carried out. Female thread 50 keeps away from first pole portion 31 one end and is equipped with transition zone 52, and the aperture ladder gradually changes, can strengthen the location effect, improves stability.

The drift diameter of the second rod part 32 is gradually increased by the drift diameter of the first rod part 31, and the drift diameter of the joint part 20 is smaller than the drift diameter of the first rod part 31, so that the high-torque drilling machine is suitable for deep hole extraction, the working efficiency is improved, and the material waste is reduced.

The utility model discloses a single-end friction welding mills formula high pressure seal three arris drilling rod concrete manufacturing method includes following step:

1. respectively carrying out integral thermal treatment hardening and tempering on the rod part 10 and the joint part 20;

2. turning the welding end surfaces of the rod body part 10 and the joint part 20, removing rust spots and oil stains, and performing friction welding;

3. performing thread machining and sealing groove 51 machining on the joint part 20 and the shank part 10;

4. milling the rod body part 10 to enable the rod body part to be in a triangular shape and gradually transit to threads at two ends;

5. and the shoulders and burrs of the whole drill rod are treated, so that the whole drill rod is smooth and smooth.

The utility model relates to a single-end friction welding mills formula high-pressure seal triangular drilling rod, simple structure is stable, and intensity is high, has the high-pressure seal effect concurrently, and the three prismatic structure of its body has kept original conventional triangular drilling rod to arrange the sediment fast, creep into efficiently, the pore-forming is effectual, be difficult for the buried drill to fall advantages such as brill, makes its can the wide application carry out conventional drilling operation or high-pressure water injection operation on the abominable working face of various geological conditions. In addition, the utility model relates to a drilling rod also saves a large amount of materials and cost of labor simultaneously in the aspect of manufacturing, has brought considerable economic benefits.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A single-head friction welding milling type high-pressure sealing three-edged drill rod is characterized by comprising a rod body part and a joint part which is in friction welding, and the rod body part and the joint part are arranged in a hollow way; the rod body part is provided with a first rod part and a second extended rod part which are in a triangular prism shape and adjacent to one end of the joint part, the first rod part is provided with three first milling planes which are arranged at intervals in a circumferential array, the first milling planes are respectively and obliquely transited to the second rod part and the joint part upwards, and a second milling plane and a third milling plane are respectively formed; a female thread is arranged in the second rod part, and a sealing groove is annularly arranged at one end, close to the first rod part, of the female thread; and a male thread and a sealing groove are arranged outside the joint part.

2. The single-headed friction welding and milling type high-pressure sealing three-edged drill rod as claimed in claim 1, wherein a transition zone is arranged at one end of the female thread away from the first rod part.

3. The single-head friction welding and milling type high-pressure sealing three-edged drill rod as claimed in claim 1, wherein a sealing ring is embedded in the sealing groove.

4. The single-headed friction welding and milling type high-pressure sealing three-edged drill rod as claimed in claim 1, wherein the rod body part is selected from a hollow thick-walled pipe, and is subjected to integral thermal hardening and tempering respectively with the joint part.

5. The single-headed friction welding and milling type high-pressure sealing three-edged drill rod as claimed in claim 1, wherein the second rod part drift diameter is gradually increased from the first rod part drift diameter, and the joint part drift diameter is smaller than the first rod part drift diameter.