CN113482547A - Embedded drilling rod capable of rotating forwards and backwards - Google Patents
Embedded drilling rod capable of rotating forwards and backwards Download PDFInfo
- Publication number
- CN113482547A CN113482547A CN202110983868.8A CN202110983868A CN113482547A CN 113482547 A CN113482547 A CN 113482547A CN 202110983868 A CN202110983868 A CN 202110983868A CN 113482547 A CN113482547 A CN 113482547A
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- drill rod
- rod unit
- locking mechanism
- embedded
- embedding
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- 238000005553 drilling Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/043—Threaded with locking means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of mining drilling tools. The embedded type positive and negative rotation drill rod comprises a plurality of drill rod units which are connected in series, wherein each drill rod unit comprises a pipe body, a male joint and a female joint which are connected to two ends of the pipe body, a locking mechanism is axially and slidably arranged in the pipe body, and an elastic piece for enabling the locking mechanism to slide and reset towards the female joint is connected to the locking mechanism; when the drill rod units are connected in series, the male joint of the rear drill rod unit is in contact with the locking mechanism of the middle drill rod unit to push the locking mechanism of the middle drill rod unit to slide towards the front drill rod unit and partially extend into the female joint of the front drill rod unit, so that the male joint of the middle drill rod unit and the female joint of the front drill rod unit are locked in the circumferential direction. According to the invention, the locking mechanism is additionally arranged in the existing common unidirectional threaded drill rod, the locking and unlocking among the drill rods are realized by utilizing the self function of drill rod connection, the automatic loading and unloading of the drilling machine on the forward and reverse drill rods are realized, and the technical support is provided for realizing the unmanned drilling construction in the whole process.
Description
Technical Field
The invention belongs to the technical field of mining drilling tools, and relates to an embedded forward and reverse rotating drill rod.
Background
At present, drill rods used in underground drilling operation of coal mines or other mining industries are generally in conical thread connection and unidirectionally transmit torque loads. In the drilling construction process, normal drilling often needs forward and reverse impact cutting to solve the problem of slow drilling, and when the hole collapse and drill holding phenomenon occurs, frequent forward and reverse rotation is needed to buffer, loosen and release the drill, and the drill rod of the common conical screw drill rod rotating in one direction is tripped in the reverse rotation, so that the forward and reverse cutting cannot be realized. In recent years, some forward and reverse rotating drill rods appear successively, but most of the forward and reverse rotating drill rods have the problems of small transmission reverse torque, blocking and unsmooth and deformation of a locking mechanism and the like frequently occurring in the using process, and the stability is poor, and meanwhile, the requirement of an automatic drilling machine for automatically assembling and disassembling the drill rods cannot be met. It is impossible to provide a forward and reverse rotation drill rod with high reliability to an automatic drilling machine.
Disclosure of Invention
In view of the above, the invention aims to solve the problems of poor stability and low reliability caused by small transmission reverse torque, easy clamping deformation of a locking mechanism in the using process and the like of the conventional forward and reverse rotating drill rod during drilling, and provides an embedded forward and reverse rotating drill rod capable of realizing automatic loading and unloading of a full machine.
In order to achieve the purpose, the invention provides the following technical scheme:
an embedded type positive and negative rotation drill rod comprises a plurality of drill rod units which are connected in series, wherein each drill rod unit comprises a pipe body, a male joint connected to two ends of the pipe body and a female joint in threaded connection with the male joint, a locking mechanism is arranged in the pipe body in an axial sliding mode, and an elastic piece used for enabling the locking mechanism to slide and reset towards the side of the female joint is connected to the locking mechanism; when the drill rod units are connected in series, the male joint of the rear drill rod unit is in contact with the locking mechanism of the middle drill rod unit to push the locking mechanism of the middle drill rod unit to slide towards the front drill rod unit and partially extend into the female joint of the front drill rod unit, so that the male joint of the middle drill rod unit and the female joint of the front drill rod unit are locked in the circumferential direction.
Furthermore, a limiting groove is arranged on the male joint, and an internal spline is arranged on the female joint; the locking mechanism comprises an embedded mandrel and an ejector rod, and the ejector rod is connected with the female joint in a sliding manner; one end of the embedded mandrel is provided with an external spline matched with the internal spline, and the other end of the embedded mandrel is connected with the ejector rod; the embedding core shaft is further provided with a middle key, and the middle key is located in the limiting groove. Embedding dabber passes through the intermediate key and cooperates with the spacing groove, realizes with male joint circumference kayser, and the rethread spline cooperation carries out the circumference kayser with female joint to realize the transmission of just reversing the moment of torsion.
Furthermore, a support ring is fixedly arranged on the female joint; the support ring is sleeved on the embedding core shaft and is in sliding fit with the embedding core shaft; the embedding dabber still is equipped with spacing step face, when the embedding dabber resets, spacing step face and support ring contact move spacingly to the embedding dabber. The embedding mandrel resets and moves under the action of the elastic piece, and the limiting step surface is contacted with the supporting ring, so that the axial displacement of the embedding mandrel is limited, and the axial initial position of the embedding mandrel is kept unchanged.
Further, the width of the limiting groove is larger than that of the middle key.
Further, one side of spacing groove is equipped with the key that resets, when the embedding dabber resets, one side and the key contact that resets of middle key make the embedding dabber reset to the one side of keeping away from the key that resets.
Furthermore, the one end that reset key and embedding dabber contacted with the one end that middle key kept away from the male joint all is equipped with the spigot surface.
When the embedding mandrel is reset, the position is guided through the guide surface, so that the circumferential initial position of the embedding mandrel is kept unchanged.
Furthermore, one side of spacing groove is equipped with the keyway that resets, the key that resets is fixed to be located in the keyway that resets.
Further, the one end that the male joint was kept away from to the external spline with the one end that the embedding dabber was kept away from to the internal spline also all is equipped with the spigot surface. Through setting up the spigot surface, when external splines inserted the internal spline, the external spline leads, and when external spline was not totally just to the time with the internal spline, through the guiding action of spigot surface, the messenger imbeds the dabber and makes certain angular rotation in the spacing inslot, makes its external spline and internal spline adjust well.
Furthermore, the elastic part is a spring and is sleeved on the embedding core shaft, one end of the elastic part is connected with the embedding core shaft, and the other end of the elastic part is connected with the male connector.
The invention has the beneficial effects that:
1) according to the invention, the serial-type locking mechanism is arranged in the threaded connection drill rod, when the drill rods are connected in series, the locking mechanism of the middle drill rod is pushed to be inserted into the female joint of the front drill rod through the axial displacement when the male joint of the rear drill rod is connected with the middle drill rod, so that the spline and the thread transmit torque at the same time, the counter torque borne by the drill rod is close to the positive torque borne by the drill rod, the reliability of the positive and negative drill rods is improved, and the faults when the drill rods are used are reduced.
2) According to the invention, the drill rod is only connected with the female joint through the male joint, the locking and resetting of the locking mechanism are automatically completed without manual assistance, the labor intensity of workers is reduced, and a technical support is provided for realizing unmanned drilling construction in the whole process.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a drill pipe unit of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural view of a male connector according to the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of the structure of the female connector of the present invention;
FIG. 6 is a right side view of FIG. 5;
FIG. 7 is a schematic view of an insert mandrel of the present invention;
FIG. 8 is a left side view of FIG. 7;
FIG. 9 is a schematic view of a reset key according to the present invention;
FIG. 10 is a top view of FIG. 9;
FIG. 11 is a schematic view of a drill stem according to the present invention;
FIG. 12 is a cross-sectional view E-E of FIG. 10;
fig. 13 is a sectional view F-F in fig. 12.
Reference numerals: 1-a female connector; 2-a top rod; 3-a support ring; 4-a retainer ring; 5-a pipe body; 6-embedding a mandrel; 7-a male connector; 8-a spring; 9-reset key; 11-internal taper thread; 12-shoulder; 13-a retainer groove; 14-internal splines; 61-external splines; 62-an intermediate bond; 63-limiting step surface; 71-external taper thread; 72-a limit groove; 73-reset keyway.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 13, an embedded drill rod for positive and negative rotation includes a plurality of drill rod units connected in series, the drill rod units are shown in fig. 1 to 8, and include a pipe body 5, a male joint 7 fixedly installed at two ends of the pipe body 5, and a female joint 1 for being in threaded connection with the male joint 7, a locking mechanism is axially slidably installed in the pipe body 5, and a spring 8 for enabling the locking mechanism to slide and reset toward the female joint 1 side is sleeved on the locking mechanism; wherein, the male joint 7 is provided with a limit groove 72, and the female joint 1 is provided with an internal spline 14; the locking mechanism comprises an embedded mandrel 6 and an ejector rod 2, and the ejector rod 2 is in sliding fit with the female joint 1; one end of the embedded mandrel 6 is provided with an external spline 61 matched with the internal spline 14, and the other end of the embedded mandrel is connected with the ejector rod 2; the embedding core shaft 6 is also provided with a middle key 62, and the middle key 62 is positioned in the limiting groove 72. The support ring 3 is sleeved on the embedding mandrel 6 and is in sliding fit with the embedding mandrel 6; the embedding mandrel 6 is further provided with a limiting step surface 63, and when the embedding mandrel 6 resets, the limiting step surface 63 is in contact with the support ring 3 to limit the movement of the embedding mandrel 6.
In this embodiment, as shown in fig. 5 and 6, the female joint 1 is provided with an inner tapered thread 11 on the inner wall of the left end of the female joint 1, the inner wall of the middle of the female joint 1 is an inner spline 14, the left end of the inner spline 14 is provided with a guide surface, the guide surface is an inclined surface and transits to a sharp corner, the directions of the inclined surfaces of all the splines are the same, and the inner wall of the right end of the female joint 1 is provided with a shoulder 12 and a retainer groove 13; the collar 4 is mounted in a collar groove 13 and the support ring 3 is fixedly mounted between the collar 4 and the shoulder 12.
In this embodiment, as shown in fig. 3 and 4, the male joint 7 is provided with 4 circumferentially and uniformly distributed limiting grooves 72 on the inner wall of the left end of the male joint 7, the width of the limiting groove 72 is greater than the width of the middle key 62, after the middle key 62 completely enters the limiting groove 72, when the external spline 61 of the drill rod unit and the internal spline 14 are not completely aligned, the external spline 61 and the internal spline 14 are embedded into the mandrel 6 to rotate within the pipe body 5 at a small angle under the action of the guide surface, so that the external spline 61 is inserted into the internal spline 14. The left end of the limiting groove 72 is provided with a reset key groove 73, the reset key 9 is brazed in the reset key groove 73, the middle of the male connector 7 is provided with an inner cavity for mounting the spring 8, and the right end of the male connector 7 is provided with an outer conical thread 71.
In this embodiment, as shown in fig. 7 and 8, the embedded mandrel 6 is provided with a limiting step surface 63 at the left end of the embedded mandrel 6, which is matched with the support ring 3 to control the reset position of the embedded mandrel 6, 4 middle keys 62 are provided at the middle section of the embedded mandrel 6, the left end of the middle key 62 is provided with a guide surface with an inclined surface which is transited to a sharp corner, one side of the reset key 9 contacting the middle key 62 is provided with a circular arc-shaped guide surface, and when the embedded mandrel 6 is reset, one side of the middle key 62 contacts the middle key 62, so that the embedded mandrel 6 is reset to the side far away from the reset key 9.
The drill rod using process comprises the following steps: as shown in fig. 11-13, the drill rod units Z1, Z2 and Z3 … … Zn are connected in series, wherein when the male joint 7 of the drill rod unit Z2 is screwed into the drill rod unit Z3, the drill rod unit Z2 presses 2 top pillars 2 arranged in the female joint 1 of the drill rod unit Z3, at this time, the top pillars 2 are pressed and embedded into the end of the mandrel 6, so that the compression spring 8 embedded into the mandrel 6 slides forwards in the inner cavity of the tube body 5 until the external spline 61 of the drill rod unit Z3 is inserted into the internal spline 14 of the drill rod unit Z4, and a spline fit is formed to clamp the relative rotation between the drill rod unit Z3 and the drill rod unit Z4; when the drill rod unit Z1 is connected again, when the male joint 7 of the drill rod unit Z1 is screwed into the female joint 1 of the drill rod unit Z2, the male joint 7 of the drill rod unit Z1 transmits extrusion force to the embedded mandrel 6 in the drill rod unit Z2 through the jacking column 2, so that the embedded mandrel 6 slides forwards, the external spline 61 of the drill rod unit Z2 is clamped into the internal spline 14 of the drill rod unit Z3, the drill rod unit Z2 and the drill rod unit Z3 are rotatably clamped, and relative rotation between the two drill rod units is prevented. The connected drill rod units are connected in series in a clamping mode among the n-1 drill rod units by the same principle, and forward and reverse torque transmission among the drill rod units is achieved without tripping.
When the drill rod is unloaded, the drill rod unit Z1 is unloaded, the embedded mandrel 6 of the drill rod unit Z2 resets under the action of the spring 8, the external spline 61 of the drill rod unit Z2 is separated from the internal spline 14 of the drill rod unit Z2, the unlocking is realized, at the moment, the connecting thread between the drill rod unit Z2 and the drill rod unit Z3 is in a rotatable disassembly state, and the drill rod Z2 is unloaded through rotation. And repeating the operation, and unloading the subsequent n-1 drill rod units.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides an embedded drilling rod that is just reversing, includes the drilling rod unit that a plurality of concatenated, the drilling rod unit includes the body, connects in the male joint at body both ends and is used for the female joint with male joint threaded connection, its characterized in that: a locking mechanism is arranged in the pipe body in an axial sliding manner, and an elastic piece used for enabling the locking mechanism to slide and reset towards the female joint side is connected to the locking mechanism; when the drill rod units are connected in series, the male joint of the rear drill rod unit is in contact with the locking mechanism of the middle drill rod unit to push the locking mechanism of the middle drill rod unit to slide towards the front drill rod unit and partially extend into the female joint of the front drill rod unit, so that the male joint of the middle drill rod unit and the female joint of the front drill rod unit are locked in the circumferential direction.
2. The embedded positive and negative rotation drill rod as claimed in claim 1, wherein: the male joint is provided with a limiting groove, and the female joint is provided with an internal spline; the locking mechanism comprises an embedded mandrel and an ejector rod, and the ejector rod is connected with the female joint in a sliding manner; one end of the embedded mandrel is provided with an external spline matched with the internal spline, and the other end of the embedded mandrel is connected with the ejector rod; the embedding core shaft is further provided with a middle key, and the middle key is located in the limiting groove.
3. The embedded positive and negative rotation drill rod as claimed in claim 2, wherein: a support ring is also fixedly arranged on the female joint; the support ring is sleeved on the embedding core shaft and is in sliding fit with the embedding core shaft; the embedding dabber still is equipped with spacing step face, when the embedding dabber resets, spacing step face and support ring contact move spacingly to the embedding dabber.
4. The embedded positive and negative rotation drill rod as claimed in claim 2, wherein: the width of the limiting groove is larger than that of the middle key.
5. The embedded positive and negative rotation drill rod as claimed in claim 4, wherein: one side of spacing groove is equipped with the reset key, when the embedding dabber resets, one side and the reset key contact of middle key make the embedding dabber reset to the one side of keeping away from the reset key.
6. The embedded positive and negative rotation drill rod as claimed in claim 5, wherein: the one end that reset key and embedding dabber contacted with the one end that the public joint was kept away from to the middle key all is equipped with the spigot surface.
7. The embedded positive and negative rotation drill rod as claimed in claim 5, wherein: one side of spacing groove is equipped with the keyway that resets, the key that resets is fixed to be located in the keyway that resets.
8. The embedded positive and negative rotation drill rod as claimed in claim 2, wherein: one end of the external spline, which is far away from the male connector, and one end of the internal spline, which is far away from the embedded mandrel, are also provided with guide surfaces.
9. The embedded positive and negative rotation drill rod as claimed in claim 1, wherein: the elastic piece is a spring and is sleeved on the embedding core shaft, one end of the elastic piece is connected with the embedding core shaft, and the other end of the elastic piece is connected with the male connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983868.8A CN113482547A (en) | 2021-08-25 | 2021-08-25 | Embedded drilling rod capable of rotating forwards and backwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110983868.8A CN113482547A (en) | 2021-08-25 | 2021-08-25 | Embedded drilling rod capable of rotating forwards and backwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113482547A true CN113482547A (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110983868.8A Pending CN113482547A (en) | 2021-08-25 | 2021-08-25 | Embedded drilling rod capable of rotating forwards and backwards |
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| Country | Link |
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| CN (1) | CN113482547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700441A (en) * | 2021-11-01 | 2021-11-26 | 中煤科工集团西安研究院有限公司 | Mining drill rod male joint with fracture self-locking function and drill rod |
| CN114151022A (en) * | 2021-11-25 | 2022-03-08 | 中国矿业大学 | Bidirectional drill rod and clamping mechanism thereof |
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2021
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Cited By (4)
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|---|---|---|---|---|
| CN113700441A (en) * | 2021-11-01 | 2021-11-26 | 中煤科工集团西安研究院有限公司 | Mining drill rod male joint with fracture self-locking function and drill rod |
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| CN114151022A (en) * | 2021-11-25 | 2022-03-08 | 中国矿业大学 | Bidirectional drill rod and clamping mechanism thereof |
| CN114151022B (en) * | 2021-11-25 | 2024-03-22 | 中国矿业大学 | Bidirectional drill rod and clamping mechanism thereof |
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