CN218971137U

CN218971137U - Reinforced rib drill rod

Info

Publication number: CN218971137U
Application number: CN202223512759.7U
Authority: CN
Inventors: 刘颖哲; 王浩; 贾小孩
Original assignee: Henan Jukuang Intelligent Equipment Co ltd
Current assignee: Henan Jukuang Intelligent Equipment Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-05
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a strengthening rib drilling rod, includes drilling rod body, public head and female head, drilling rod body center is provided with the center through-hole, public head center be with the public first hole of center through-hole, the internal diameter in public first hole is less than the internal diameter in center through-hole to form the reducing step in public first hole and center through-hole in the junction, can dismantle in the public first hole and be provided with the strengthening rib cover, the strengthening rib cover includes main cover and sets up respectively limit housing and end cover at main cover both ends, the limit housing with an organic whole is connected between the main cover, end cover with can dismantle between the main cover and be connected, main cover, limit housing and end cover form the cover body of an "H" shape structure jointly, main cover coincide the cover and establish in the public first hole, main cover one end is passed through the limit housing spacing and is supported by reducing step department, the main cover other end is through detachable cover with spacing fixed between the public head. The utility model can effectively solve the problem of back drilling after the male head of the drill rod breaks.

Description

Reinforced rib drill rod

Technical Field

The utility model relates to the technical field of drill pipes, in particular to a reinforced rib drill pipe.

Background

The coal mine drill pipes are mutually connected and matched through the male head and the female head to form a drill pipe with the length of tens of meters and hundreds of meters, and the drill pipe is used for drilling holes in coal walls and draining gas in coal mine wells. The male on the drill rod needs to be machined separately and then the formed male is welded on the drill rod body. The strength of the male head is critical, the integral use of the drill rod is directly affected, and once the strength is insufficient and the drill rod breaks, a plurality of problems which are difficult to solve are caused: for example, when a male drill rod of a certain section in a drill hole is broken in the drilling process, the drill rod broken in the drill hole can not be withdrawn and can only be abandoned, so that great loss is caused; if a male head of a certain section of drill rod outside a drilled hole is broken, the drill rod at the broken part can be directly broken under the action of strong torque of a drilling machine, so that great potential safety hazards are caused.

The male is easy to break, and mainly the structure is limited: the male head is in threaded fit with the female head, so that a conical connector with a step is firstly machined on the male head, and then threads are machined on the circumference of the conical surface of the conical connector. It can also be seen from fig. 6 of the present application that a conical connector is further reduced in diameter on the male head with limited wall thickness, and the threaded conical connector bears all torque transmission of the drill rod, so that the end portion reduced diameter of the conical connector is very easy to break under the action of strong torque, which is also the main position and main cause of the break of the male head, and in view of the limitation of the structure of the male head, the breaking problem cannot be thoroughly solved fundamentally. In practice, however, the more severe fracture situation is the first situation described above, namely a break in a section of the drill rod pin in the borehole. Since the breaking of the male head of the drill rod cannot be fundamentally prevented, how to effectively solve the problem of the withdrawal of the drill rod left in the drill hole after the breaking of the male head becomes a problem to be solved.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a reinforced rib drill rod, wherein a reinforced bone sleeve is additionally arranged in a central through hole at the joint of a male head of the drill rod, and the reinforced bone sleeve is of an H-shaped structure, so that a drill rod body and the male head can be hooked together, and even if the joint of the male head and the drill rod body is broken, the broken rib can be continuously broken, and the complete drill withdrawal of the drill rod can be realized under the action of the reinforced bone sleeve, thereby effectively solving the drill withdrawal problem after the breakage of the male head of the drill rod.

The technical scheme adopted by the utility model for solving the problems is as follows:

the utility model provides a strengthening rib drilling rod, includes drilling rod body, public head and female head, drilling rod body center is provided with the center through-hole, public head center be with the public first hole of center through-hole, the internal diameter in public first hole is less than the internal diameter in center through-hole to form the reducing step in public first hole and center through-hole in the junction, can dismantle in the public first hole and be provided with the strengthening rib cover, the strengthening rib cover includes main cover and sets up respectively limit housing and end cover at main cover both ends, the limit housing with an organic whole is connected between the main cover, end cover with can dismantle between the main cover and be connected, main cover, limit housing and end cover form the cover body of an "H" shape structure jointly, main cover coincide the cover and establish in the public first hole, main cover one end is passed through the limit housing spacing and is supported by reducing step department, the main cover other end is through detachable cover with spacing fixed between the public head.

As an optimization scheme of the technical scheme, the outer diameter and the length of the main sleeve are respectively matched with the outer diameter and the length of the male hole.

As another optimization scheme of the technical scheme, the outer diameter of the limiting sleeve is matched with the inner diameter of the central through hole, so that the limiting sleeve is anastomosed and limited to lean against the diameter-reducing step.

As still another optimization scheme of the above technical scheme, the end socket is in threaded connection with the end of the main socket.

As an improvement scheme of the technical scheme, the circumference of the end part of the male head in the male head hole is provided with a diameter expanding groove matched with the end socket, so that the end socket is in threaded connection with the main socket and then is embedded into the diameter expanding groove in an anastomotic manner, and the end socket, the main socket and the end part of the male head are flush.

As an optimization scheme of the improved technical scheme, the outer circumference of the end part of the main sleeve is provided with external threads matched with the end socket.

As an optimization scheme of the technical scheme, the outer diameter of the end socket is smaller than that of the limit sleeve.

Compared with the prior art, the utility model has the following beneficial effects:

this application creatively has introduced the structure of strengthening the bone cover, strengthen the bone cover whole body and be "H" shape structure, cup joint in the public head downthehole of public head, one end is spacing to lean on with the reducing step of drilling rod body tip through the stop collar, form one end and collude the linking structure, the other end then is spacing through leaning on each other between end headgear and the public head, form the other end and collude the linking structure, and then the physics that has formed between drilling rod body and the public head on the whole colludes the linking structure, in this way, even if the welded connection position between public head and the drilling rod body breaks, the cracked public head just can't break away from the drilling rod body under strengthening the existence of bone cover, under this structure, drilling rod body just is equivalent to the bone with public head, strengthen the bone cover then is equivalent to the connecting rib that depends on the skeleton, "broken muscle is continuous", although unable transmission moment of torsion, but can ensure holistic complete the back of drilling rod and bore the back problem in the drilling hole has been solved perfectly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the drill pipe body and the male;

FIG. 3 is a schematic view of an assembled structure of the present utility model;

FIG. 4 is a schematic view of a reinforced bone sleeve;

FIG. 5 is a schematic view of the connection structure between drill rods according to the present application;

FIG. 6 is a schematic view of the structure of the easy breaking position between the drill pipe body and the male;

fig. 7 is a schematic structural diagram of embodiment 1.

The marks in the figure: 1. the drill rod body, 2, the male head, 3, the central through hole, 4, the male head hole, 5, the diameter-reducing step, 6, the reinforcing bone sleeve, 61, the main sleeve, 62, the limiting sleeve, 63, the end sleeve, 7, the diameter-expanding groove, 8 and the easy fracture department.

Detailed Description

The present application is further illustrated below in conjunction with specific embodiments. The following embodiments of the present application are not described in detail in the prior art, and therefore, the structure and connection are not described in detail.

Example 1

The utility model provides a strengthening rib drilling rod, includes drilling rod body 1, public head 2 and female head, drilling rod body 1 center is provided with central through-hole 3, public head 2 center be with the public head hole 4 that link up with central through-hole 3, public head hole 4's internal diameter is less than the internal diameter of central through-hole 3 to form reducing step 5 in public head hole 4 and central through-hole 3 in the junction, can dismantle in public head hole 4 and be provided with strengthening bone cover 6, strengthening bone cover 6 includes main cover 61 and sets up respectively limit collar 62 and end cover 63 at main cover 61 both ends, limit collar 62 with integrative being connected between the main cover 61, end cover 63 with can dismantle between the main cover 61 and be connected, main cover 61, limit collar 62 and end cover 63 jointly form the cover body of an "H" shape structure, main cover 61 coincide the cover is established in public head hole 4, main cover 61 one end is spacing to lean on in reducing step 5 department through limit collar 62, main cover 61 other end is through dismantling between public cover 62 and the limit collar 2.

At present, in order to improve the welding connection strength between the drill rod body 1 and the male head 2 as much as possible, the drill rod body 1 and the male head 2 are welded and connected in a friction welding manner, meanwhile, because the wall thickness of the drill rod body 1 is limited, in order to further improve the connection strength, the wall thickness of the connecting end of the male head 2 needs to be thickened so as to ensure the friction welding strength, so that the drill rod structure shown in fig. 2 is formed, namely, the aperture of the central through hole 3 is larger than the aperture of the male head hole 4, and a diameter reduction step 5 is formed between the drill rod body 1 and the male head 2, which is the origin of the diameter reduction step 5.

The structure of the diameter-reducing step 5 is fully considered and utilized, the reinforced bone sleeve 6 which can be matched with the diameter-reducing step 5 is designed, and as shown in fig. 7, the limiting sleeve 62 can be just matched and abutted against the diameter-reducing step 5, so that a hooking structure for the drill rod body 1 is formed; in addition, the end socket 63 adopts a detachable connection structure mainly for facilitating the installation of the reinforced bone socket 6, since the end socket 63 is connected with the other end of the main socket 61 in a sleeved mode, the outer diameter of the end socket 63 is necessarily larger than the inner diameter of the male hole 4, so after the end socket 63 is connected to the main socket 61, the end socket 63 can form a propping limit at the end part of the male head 2, thereby forming a hook connection structure of the male head 2, further completing the mutual hook connection between the drill rod body 1 and the male head 2, even if the male head is broken, the reinforced bone socket 6 can still connect the male head on the drill rod body 1 without separation, and the broken drill rod can be directly pulled out to complete drilling under the hook connection structure, thus completely solving the complete drilling withdrawal problem of the drill rod after the male head is broken.

In this embodiment, in order to make the reinforcing bone sleeve 6 and the male head 2 better engaged and matched, the outer diameter and length of the main sleeve 61 are respectively matched with the outer diameter and length of the male head hole 4;

in this embodiment, in order to improve the connection stability of the stop collar 62, the outer diameter of the stop collar 62 is matched with the inner diameter of the central through hole 3, so that the stop collar 62 is anastomosed and limited to lean against the diameter-reducing step 5.

In this embodiment, in order to simplify the detachable connection structure between the end cap 63 and the main sleeve 61, a threaded connection structure may be directly adopted, that is, the end cap 63 is in threaded connection with the end portion of the main sleeve 61, the outer circumference of the end portion of the main sleeve 61 is provided with an external thread adapted to the end cap 63, and meanwhile, the outer diameter of the end cap 63 is smaller than the outer diameter of the limiting sleeve 62.

In the machining process, firstly, machining and welding of the male head 2 are completed, before machining of the female head, the end cap 63 is detached, the main sleeve 61 and the limiting sleeve 62 are installed in the central through hole 3 from the other end of the drill rod body 1, the limiting sleeve 62 abuts against the reducing step 5, at the moment, the main sleeve 61 is sleeved into the male head hole 4, as shown in fig. 7, the main sleeve 61 extends out of a part of the male head hole 4, finally, the end cap 63 is connected to the main sleeve 61 in a threaded mode, abuts against the end portion of the male head 2 in a limiting mode, the end cap 63 is further welded and fixed on the male head 2, and then the assembly of the reinforced bone sleeve 6 is completed, and finally, the female head is machined.

Example 2

This embodiment is substantially identical to the structure of embodiment 1, and differs from embodiment 1 in further optimization and improvement: as shown in fig. 1-5, the circumference of the end of the male head 2 in the male head hole 4 is provided with a diameter-enlarging groove 7 matched with the end socket 63, so that after the end socket 63 is screwed on the main socket 61, the end socket 63 is embedded into the diameter-enlarging groove 7 in an anastomotic manner, and the end sockets 63, the main socket 61 and the end of the male head 2 are flush.

The structure meets the structural requirement of the finished drill rod, on one hand, the end part between the end socket 63 and the male head 2 is flush, the structure is not abrupt, the integrity is better, and the structure is more attractive; on the other hand, the structure of the female head can be better engaged and matched with the existing structure of the female head, if the structure in the embodiment 1 is adopted, an avoidance groove matched with the exposed end socket 61 is additionally processed in the inner hole of the female head, and compared with the processing of the expanding groove 7 in the embodiment, the processing of the expanding groove 7 on the end part of the male head is obviously more convenient, so that the structure of the embodiment 2 is adopted as a standard for processing and production in the present stage in practice.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a strengthening rib drilling rod, includes drilling rod body (1), public head (2) and female head, drilling rod body (1) center is provided with central through-hole (3), public head (2) center be with public head hole (4) that central through-hole (3) link up, its characterized in that: the internal diameter of public first hole (4) is less than the internal diameter of central through hole (3), so that form reducing step (5) in junction in public first hole (4) and central through hole (3), can dismantle in public first hole (4) and be provided with reinforcing bone cover (6), reinforcing bone cover (6) include main cover (61) and set up respectively limit collar (62) and end cover (63) at main cover (61) both ends, limit collar (62) with integrative connection between main cover (61), end cover (63) with can dismantle between main cover (61) and be connected, the cover body of an "H" shape structure is formed jointly to main cover (61), limit collar (62) and end cover (63), main cover (61) coincide the cover and establish in public first hole (4), main cover (61) one end is through limit collar (62) spacing to be in reducing step (5) department, main cover (61) other end is through detachable end cover (63) and between spacing head (2).

2. A reinforced tendons and bones drill pipe as defined in claim 1, wherein: the outer diameter and the length of the main sleeve (61) are respectively matched with the outer diameter and the length of the male hole (4).

3. A reinforced tendons and bones drill pipe as defined in claim 1, wherein: the outer diameter of the limiting sleeve (62) is matched with the inner diameter of the central through hole (3), so that the limiting sleeve (62) is anastomotic and limited to lean against the reducing step (5).

4. A reinforced tendons and bones drill pipe as defined in claim 1, wherein: the end socket (63) is in threaded connection with the end of the main socket (61).

5. The reinforced tendons and bones drill pipe of claim 4, wherein: the circumference of the end part of the male head (2) in the male head hole (4) is provided with a diameter expanding groove (7) matched with the end socket (63), so that the end socket (63) is in fit and embedded into the diameter expanding groove (7) after being connected with the main socket (61) in a threaded manner, and the end socket (63), the main socket (61) and the end part of the male head (2) are flush.

6. The reinforced tendons and bones drill pipe of claim 4, wherein: the outer circumference of the end part of the main sleeve (61) is provided with external threads matched with the end sleeve (63).

7. A reinforced tendons and bones drill pipe as defined in claim 1, wherein: the outer diameter of the end socket (63) is smaller than that of the limit sleeve (62).