CN114278235A - Positive and negative rotation threaded connection drill rod with self-locking function - Google Patents
Positive and negative rotation threaded connection drill rod with self-locking function Download PDFInfo
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- CN114278235A CN114278235A CN202111319724.9A CN202111319724A CN114278235A CN 114278235 A CN114278235 A CN 114278235A CN 202111319724 A CN202111319724 A CN 202111319724A CN 114278235 A CN114278235 A CN 114278235A
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Abstract
The invention discloses a self-locking positive and negative rotation threaded connection drill rod, which relates to the field of coal mine drill rods and comprises an external spline drill rod body, wherein a first spring is arranged in the middle of the external spline drill rod body, an internal spline sliding jaw is arranged on the outer surface of one end of the external spline drill rod body, a lock pin and a second spring are arranged in the middle of the internal spline sliding jaw, the lock pin is positioned on one side of the second spring, mandrels are arranged in the middle of the external spline drill rod body and the internal spline sliding jaw, and the external spline drill rod body consists of an external thread joint, a narrow spiral steel strip, a middle rod, a first wide spiral steel strip and an internal thread joint. The positive and negative rotation threaded connection drill rod with the self-locking function can be quickly connected and detached through a threaded connection mode, is firm in connection and reliable in reverse rotation function, is beneficial to realizing intellectualization and unmanned drilling of a drill carriage, and is novel in structure, simple to machine, reliable in performance, capable of guaranteeing drilling quality and capable of improving engineering progress.
Description
Technical Field
The invention relates to the field of coal mine drill rods, in particular to a positive and negative rotation threaded connection drill rod with a self-locking function.
Background
The coal mine is mostly drilled by adopting a drill rod connected by taper threads, the drill can only drill in a forward rotation mode but not in a reverse rotation mode due to the connection property of the taper threads, when the rock burst or the soft coal seam is drilled, the phenomenon of hole collapse and drill clamping can occur, once the drill rod is clamped by coal, the drill hole cannot continue to drill, the drill rod is difficult to extract from the drill hole, the drill rod and the drill bit are buffered by normally rotating the drill rod in the forward and reverse directions, however, the drill rod is in threaded connection, and the thread buckle is easy to separate during the reverse rotation, so that the drill rod and the drill bit of hundreds of meters are discarded in the coal seam, the drilled drill hole is scrapped, a large number of drill rods and drill bits are lost, engineering loss and material loss are caused, and engineering quality and engineering progress are influenced.
At present, the drill rod capable of realizing positive and negative rotation is mostly a square, hexagonal or special-shaped plug-in connection spiral drill rod, the drill rod transfers torque and realizes positive and negative rotation by means of the square, hexagonal or special-shaped connection spiral drill rod, but the drill rod also has a plurality of defects: the drill rod and the drill rod are connected through the U-shaped clamp, the clamp bean and the pin shaft, when hole collapse and drill clamping occur, the drill rod needs to be pulled and pulled repeatedly in a forward and reverse rotation mode to buffer, at the moment, the coal seam extrudes the U-shaped clamp, the clamp bean and the pin shaft, the U-shaped clamp, the clamp bean and the pin shaft are prone to falling and losing efficacy, and the drill rod is prone to being disengaged and lost; in addition, along with the development of intelligent equipment of a coal mine, the intelligent and unmanned drilling rod tends to be more and more intelligent and unmanned, the square and square alignment is required when the drilling rod is continuously connected, a high-precision drilling machine is required to realize the connection, the fixing and the working environment of the drilling rod, and the intelligent and unmanned drilling rod is difficult to realize due to the limitation of the connection, the fixing and the working environment of the drilling rod.
Disclosure of Invention
The invention mainly aims to provide a positive and negative rotation threaded connection drill rod with a self-locking function, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a take just reversing threaded connection drilling rod of auto-lock, includes the external splines drilling rod body, the middle part of the external splines drilling rod body is provided with first spring, the one end surface of the external splines drilling rod body is provided with the slip tooth of internal spline and inlays, the middle part of the slip tooth of internal spline is provided with lockpin and second spring, the lockpin is located one side of second spring, the middle part of the slip tooth of the external splines drilling rod body and internal spline all is provided with the dabber.
Preferably, the external spline drill pipe body consists of an external thread joint, a narrow spiral steel belt, an intermediate rod, a first wide spiral steel belt and an internal thread joint.
Preferably, the male screw joint is located on the outer surface of one end of the middle rod, the female screw joint is located on the outer surface of the other end of the middle rod, the narrow spiral steel strip is located on the outer wall of the middle rod, and the first wide spiral steel strip is located on the outer wall of the female screw joint.
Preferably, the outer surface of one end of the external thread joint is welded with the outer surface of one end of the middle rod, the outer surface of the other end of the middle rod is welded with the outer surface of one end of the internal thread joint, the outer wall of the internal thread joint is welded with the outer surface of one end of the first wide spiral steel strip, and the outer wall of the middle rod is welded with the outer surface of one end of the narrow spiral steel strip.
Preferably, the internal spline sliding tooth insert consists of an internal spline sliding tooth insert and a second wide spiral steel strip, the second wide spiral steel strip is positioned on the outer wall of the internal spline sliding tooth insert, and the outer wall of the internal spline sliding tooth insert is connected with the outer surface of one end of the second wide spiral steel strip in a welding mode.
Preferably, the outer wall of the mandrel is provided with a groove, a fixed groove is formed between the external spline drill rod body and the first spring, and the inner wall of the external spline drill rod body is detachably connected with the outer wall of the first spring through the fixed groove.
Preferably, a sliding groove is formed between the outer spline drill pipe body and the core shaft as well as between the inner spline sliding jaw and the core shaft, and the inner walls of the outer spline drill pipe body and the inner spline sliding jaw are movably connected with the outer wall of the core shaft through the sliding groove.
Preferably, the external thread joint can be of a structure with an external spline or a single key, the internal thread joint is provided with four equally-divided jaws which are of a ratchet-shaped structure.
Compared with the prior art, the invention has the following beneficial effects: this take just reversal threaded connection drilling rod of auto-lock through the threaded connection form, can continue to connect fast, dismantle the drilling rod, and connect firmly, and the reversal function is reliable, does benefit to in addition to realize that the drill carriage is intelligent, unmanned, novel structure, processing is simple, and the dependable performance guarantees drilling quality, improves the engineering progress, and the effect of use is better for traditional mode.
Drawings
FIG. 1 is a schematic view of the overall structure of a positive and negative rotation threaded connection drill rod with self-locking of the present invention;
FIG. 2 is a structural diagram of a drill rod body 1 with self-locking external splines of a positive and negative rotation threaded connection drill rod;
FIG. 3 is a schematic view showing the expansion of the tooth form of a positive and negative rotation threaded connection drill rod with self-locking according to the present invention;
FIG. 4 is a schematic locking view of a positive and negative rotation threaded connection drill rod with self-locking according to the present invention.
In the figure: 1. an external spline drill rod body; 2. a first spring; 3. the internal spline slides the jaw; 4. a lock pin; 5. a second spring; 6. a mandrel; 101. an externally threaded nipple; 102. a narrow spiral steel strip; 103. an intermediate lever; 104. a first wide spiral steel strip; 105. an internal thread joint; 301. the internal spline slides the tooth nest; 302. a second broad spiral steel strip.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-4, a positive and negative rotation threaded connection drill rod with self-locking function comprises an external spline drill rod body 1, wherein a first spring 2 is arranged in the middle of the external spline drill rod body 1, an internal spline sliding jaw 3 is arranged on the outer surface of one end of the external spline drill rod body 1, a lock pin 4 and a second spring 5 are arranged in the middle of the internal spline sliding jaw 3, the lock pin 4 is positioned on one side of the second spring 5, and a mandrel 6 is arranged in the middle of the external spline drill rod body 1 and the middle of the internal spline sliding jaw 3.
Further, the external spline drill rod body 1 is composed of an external thread joint 101, a narrow spiral steel belt 102, a middle rod 103, a first wide spiral steel belt 104 and an internal thread joint 105, and the narrow spiral steel belt 102 and the first wide spiral steel belt 104 are used for continuously pushing coal powder out of a hole in the forward drilling process so as to achieve the purpose of self-discharging powder.
Further, a male screw 101 is provided on the outer surface of one end of the intermediate rod 103, a female screw 105 is provided on the outer surface of the other end of the intermediate rod 103, a narrow spiral steel strip 102 is provided on the outer wall of the intermediate rod 103, a first wide spiral steel strip 104 is provided on the outer wall of the female screw 105, and the female screw 105 has four equally divided castellations.
Furthermore, the outer surface of one end of the male screw joint 101 is welded to the outer surface of one end of the middle rod 103, the outer surface of the other end of the middle rod 103 is welded to the outer surface of one end of the female screw joint 105, the outer wall of the female screw joint 105 is welded to the outer surface of one end of the first wide spiral steel strip 104, the outer wall of the middle rod 103 is welded to the outer surface of one end of the narrow spiral steel strip 102, the outer wall of the middle rod is connected with the outer surface of one end of the narrow spiral steel strip 102 in a friction welding mode, and welding strength is high.
Further, the internal spline sliding jaw 3 is composed of an internal spline sliding jaw 301 and a second wide spiral steel belt 302, the second wide spiral steel belt 302 is located on the outer wall of the internal spline sliding jaw 301, the outer wall of the internal spline sliding jaw 301 is in welded connection with the outer surface of one end of the second wide spiral steel belt 302, and the second wide spiral steel belt 302 is more beneficial to clamping of a drill carriage clamp holder on the premise of having a powder discharging function.
Further, the outer wall of dabber 6 is seted up flutedly, is provided with the fixed slot between the external splines body of drilling 1 and the first spring 2, and the inner wall of the external splines body of drilling 1 passes through the fixed slot and can dismantle with the outer wall of first spring 2 and be connected, and the recess is used for the injecing to dabber 6 position.
Further, all be provided with the spout between the external splines body of drilling 1 and the internal splines slip profile 3 and the dabber 6, the internal wall of the external splines body of drilling 1 and the internal splines slip profile 3 all through spout and dabber 6 outer wall swing joint, lockpin 4, first spring 2, dabber 6, the cooperation action of second spring 5 for the slip around locking and loosening between the internal splines slip profile 3 and the internal splines body of drilling 1.
Further, the male adapter 101 may be divided into a structure with an external spline or a single key, the female adapter 105 has four equally-divided jaws, and the equally-divided jaws are in a ratchet-shaped structure, and the male adapter 101 is in a structure with an external spline.
The invention is a self-locking drill rod with positive and negative rotation threaded connection, when in use, when a drill rod is continuously connected, a drill carriage clamp clamps an internal spline sliding jaw 3, a gyrator carries a main shaft to forward and forward feed a thread fastener, so that an external thread connector 101 (with an external spline) and an internal thread connector 105(4 equally-divided jaws) are screwed, a mandrel 6 moves forward for a specified distance under the action of a knock pin at the front end of the main shaft, a first spring 2 in the drill rod is compressed, a groove structure on the mandrel 6 moves to be right below a lock pin 4, the clamp clamps clamp the internal spline sliding jaw 3 at the moment, the gyrator carries the drill rod to retreat, a second spring 5 at the lower end of the lock pin 4 is extruded and compressed, the lock pin 4 moves to the inside of an external spline drill rod body 1, the spline sliding jaw 3 moves forward relative to the drill rod body and is engaged with the internal thread connector 105(4 equally-divided jaws) in the drill rod body 1 with the external spline at the front end, stopping returning, withdrawing the top shaft at the front end of the main shaft, returning the mandrel 6 under the action of spring force at the front end of the spring force, dislocating the groove structure on the mandrel 6 and the lockpin 6 at the moment, propping the lower end surface of the lockpin 4 by the excircle of the mandrel 6, avoiding relative motion between the sliding jaw of the internal spline and the drill rod body, completing the action of continuously connecting the drill rods, leading and trailing two drill rods to enter a locking state (see figure 4), solving the situation by reversing if the situation of clamping and holding the drill rod occurs in the drilling process, meshing between threads due to the position relation between the mandrel 6 and the lock core, avoiding relative sliding between the sliding jaw of the internal spline and the drill rod body of the external spline, avoiding disengagement between thread buckles, completing the reversing action, when disassembling the drill rod, screwing the main shaft with the jaw joint of the internal thread of the drill rod body 1 of the external spline by the gyrator, extending out the top pin at the front end of the main shaft, overcoming the spring force of the mandrel 6 by a small distance, the structure of groove department on dabber 6 moves under lockpin 4, the holder presss from both sides tight internal spline slip jaw 3 this moment, the gyrator impels forward, internal spline slip jaw 3 and the external spline body of drilling 1 of rod resume initial condition, remove main shaft front end knock pin, gyrator main shaft front end jaw stretches out, main shaft anterior segment jaw and front end female joint 105(4 are equallyd divide the jaw) position lock die, the holder presss from both sides tight front end drilling rod, beat the reversal this moment, two drilling rod threaded connection departments throw off, remove the main shaft jaw, the holder presss from both sides the tight drilling rod of detaining completion, the main shaft reverses, main shaft front end screw thread and drilling rod screw thread throw off, unload the pole completion, it is comparatively practical.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a take just reversing threaded connection drilling rod of auto-lock, includes the external splines drilling rod body (1), its characterized in that: the middle part of the external spline drill pipe body (1) is provided with a first spring (2), the one end surface of the external spline drill pipe body (1) is provided with an internal spline sliding jaw (3), the middle part of the internal spline sliding jaw (3) is provided with a lock pin (4) and a second spring (5), the lock pin (4) is located on one side of the second spring (5), and the middle parts of the external spline drill pipe body (1) and the internal spline sliding jaw (3) are provided with a mandrel (6).
2. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 1, is characterized in that: the external spline drill rod body (1) is composed of an external thread connector (101), a narrow spiral steel belt (102), an intermediate rod (103), a first wide spiral steel belt (104) and an internal thread connector (105).
3. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 2, characterized in that: the external thread joint (101) is located on the outer surface of one end of the middle rod (103), the internal thread joint (105) is located on the outer surface of the other end of the middle rod (103), the narrow spiral steel strip (102) is located on the outer wall of the middle rod (103), and the first wide spiral steel strip (104) is located on the outer wall of the internal thread joint (105).
4. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 2, characterized in that: the outer surface of one end of the external thread joint (101) is connected with the outer surface of one end of the middle rod (103) in a welded mode, the outer surface of the other end of the middle rod (103) is connected with the outer surface of one end of the internal thread joint (105) in a welded mode, the outer wall of the internal thread joint (105) is connected with the outer surface of one end of the first wide spiral steel strip (104) in a welded mode, and the outer wall of the middle rod (103) is connected with the outer surface of one end of the narrow spiral steel strip (102) in a welded mode.
5. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 1, is characterized in that: the inner spline sliding tooth insert (3) is composed of an inner spline sliding tooth insert (301) and a second wide spiral steel belt (302), the second wide spiral steel belt (302) is located on the outer wall of the inner spline sliding tooth insert (301), and the outer wall of the inner spline sliding tooth insert (301) is connected with the outer surface of one end of the second wide spiral steel belt (302) in a welding mode.
6. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 1, is characterized in that: the outer wall of the mandrel (6) is provided with a groove, a fixed groove is formed between the outer spline drill rod body (1) and the first spring (2), and the inner wall of the outer spline drill rod body (1) is detachably connected with the outer wall of the first spring (2) through the fixed groove.
7. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 1, is characterized in that: all be provided with the spout between the external splines body of drilling rod (1) and the slip dog of internal spline (3) and dabber (6), the inner wall of the external splines body of drilling rod (1) and the slip dog of internal spline (3) all is through the outer wall swing joint of spout and dabber (6).
8. The positive and negative rotation threaded connection drill rod with the self-locking function as claimed in claim 2, characterized in that: the external thread connector (101) can be of a structure with an external spline or a single key, the internal thread connector (105) is provided with four equally-divided jaws which are of a ratchet-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111319724.9A CN114278235A (en) | 2021-11-09 | 2021-11-09 | Positive and negative rotation threaded connection drill rod with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111319724.9A CN114278235A (en) | 2021-11-09 | 2021-11-09 | Positive and negative rotation threaded connection drill rod with self-locking function |
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| Publication Number | Publication Date |
|---|---|
| CN114278235A true CN114278235A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111319724.9A Pending CN114278235A (en) | 2021-11-09 | 2021-11-09 | Positive and negative rotation threaded connection drill rod with self-locking function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860803A (en) * | 2012-09-19 | 2013-01-09 | 张许 | Mop capable of rotating along positive and negative directions |
| CN112145093A (en) * | 2020-10-23 | 2020-12-29 | 中煤科工集团重庆研究院有限公司 | Series control automatic loading and unloading drill rod capable of rotating forward and backward |
| CN112227976A (en) * | 2020-11-05 | 2021-01-15 | 冀凯河北机电科技有限公司 | Threaded connection auger stem capable of realizing forward and reverse rotation |
| CN112343521A (en) * | 2020-10-18 | 2021-02-09 | 中煤科工集团重庆研究院有限公司 | Ratchet self-locking drill rod capable of rotating forwards and reversely |
| CN112360354A (en) * | 2020-11-29 | 2021-02-12 | 重庆梅安森科技股份有限公司 | Mining drill rod assembly capable of rotating forwards and backwards |
-
2021
- 2021-11-09 CN CN202111319724.9A patent/CN114278235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102860803A (en) * | 2012-09-19 | 2013-01-09 | 张许 | Mop capable of rotating along positive and negative directions |
| CN112343521A (en) * | 2020-10-18 | 2021-02-09 | 中煤科工集团重庆研究院有限公司 | Ratchet self-locking drill rod capable of rotating forwards and reversely |
| CN112145093A (en) * | 2020-10-23 | 2020-12-29 | 中煤科工集团重庆研究院有限公司 | Series control automatic loading and unloading drill rod capable of rotating forward and backward |
| CN112227976A (en) * | 2020-11-05 | 2021-01-15 | 冀凯河北机电科技有限公司 | Threaded connection auger stem capable of realizing forward and reverse rotation |
| CN112360354A (en) * | 2020-11-29 | 2021-02-12 | 重庆梅安森科技股份有限公司 | Mining drill rod assembly capable of rotating forwards and backwards |
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Application publication date: 20220405 |
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