CN113374429B - Deep mine drilling draw gear - Google Patents
Deep mine drilling draw gear Download PDFInfo
- Publication number
- CN113374429B CN113374429B CN202110717761.9A CN202110717761A CN113374429B CN 113374429 B CN113374429 B CN 113374429B CN 202110717761 A CN202110717761 A CN 202110717761A CN 113374429 B CN113374429 B CN 113374429B
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- steel bar
- worm
- explosion
- cylindrical barrel
- pull rings
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000009193 crawling Effects 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 230000009194 climbing Effects 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000003245 coal Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000001788 irregular Effects 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the field of mineral resource mining machinery, in particular to a deep mine drilling traction device. Comprises a traction head, a crawling mechanism and an explosion-proof motor; the climbing mechanism includes the steel bar hoop of coaxial setting, welds the reinforcing bar in all steel bar hoop outer fringe jointly along the axial of all steel bar hoops, the steel bar hoop and the reinforcing bar rod constitute cylindric steel bar frame body, lie in and rotate on the steel bar hoop between the adjacent reinforcing bar rod and install the worm wheel, wear to be equipped with the worm in the steel bar frame body, and all worm wheels all cooperate with the worm, the output shaft has set firmly in the worm, the coaxial fixed connection of the other one end of the one end of output shaft and the pivot of traction head, the coaxial fixed connection of the other one end of output shaft and explosion proof machine's output. The invention can crawl in two directions, after the fracturing operation of one section of drill hole is finished, the invention can crawl backwards to the next section of drill hole to continue the fracturing operation, and the invention can be applied to the staged fracturing operation of the drill hole of the deep mine.
Description
Technical Field
The invention relates to the field of mineral resource mining machinery, in particular to a deep mine drilling traction device.
Background
In recent years, with the increasing of mining intensity, the mining depth of coal mine resources in China is increased at a speed of 8-12 meters per year, a large amount of coal mines quickly enter a deep mining stage, and the mining work of deep mines is difficult.
In order to ensure the safety of workers, coal bed gas in gaps of coal reservoirs needs to be mined out before coal mines are excavated. When coal bed gas is mined, a plurality of gaps are formed on the coal bed in an operation area by using a fracturing device, and the process is called fracturing. At present, before fracturing operation, a channel with the depth of hundreds of meters needs to be drilled, and a fracturing device wound on a winch is slowly sent into a drilled hole. This process has the following problems:
1. the fracturing device can only be slowly fed into or taken out of a drilling hole with the length of hundreds of meters by manually rotating the winch without other power, and the process of feeding the fracturing device into the deep part of the drilling hole and taking the fracturing device out of the drilling hole is time-consuming and labor-consuming.
2. The fracturing device is single in structure, cannot automatically dig in and is insufficient in capability of coping with abnormal conditions. If sudden abnormal conditions such as barriers, ore body collapse and the like occur, the fracturing device can only be sent to the position to perform fracturing operation, and cannot go deep into the drill hole to perform fracturing operation.
Therefore, it is necessary to invent a deep mine drilling traction device, so that the deep mine mining device can adapt to the complex geological condition of a deep mine and can be easily sent to the deep part of a drilled hole.
Disclosure of Invention
The invention provides a deep mine drilling traction device, which aims to solve the problems that the delivery process of a deep mine mining device is time-consuming and labor-consuming and is greatly influenced by abnormal conditions.
The invention is realized by the following technical scheme: a deep mine drilling traction device comprises a traction head, a crawling mechanism and an explosion-proof motor;
the traction head comprises a cylindrical barrel, a rotating shaft rotatably arranged in a central hole of the cylindrical barrel, a conical round table coaxially fixed at one end of the rotating shaft and extending out of the cylindrical barrel, spiral teeth annularly arranged on a conical surface of the conical round table, and a conical drill bit coaxially fixed on a small end surface of the conical round table;
the crawling mechanism comprises at least two steel bar hoops which are coaxially arranged, at least three steel bars are welded on the outer edges of the steel bar hoops together along the axial direction of the steel bar hoops, the steel bar hoops and the steel bars form a cylindrical steel bar frame body, at least one worm wheel is rotatably arranged on the steel bar hoops between the adjacent steel bars, a worm penetrates through the steel bar frame body, all the worm wheels are matched with the worm, an output shaft is fixedly arranged in the worm, one end of the output shaft is coaxially and fixedly connected with the other end of a rotating shaft of the traction head, one end of the steel bar is connected with the cylindrical barrel of the traction head, the other end of the output shaft is coaxially and fixedly connected with the output end of the explosion-proof motor, and the other end of the steel bar is connected with a shell of the explosion-proof motor; the outer diameter of the steel bar frame body is smaller than the outer diameters of the cylindrical barrel body of the traction head and the explosion-proof motor, and the diameter of a circle formed by tooth tops of gear teeth on the outermost sides of all worm gears is larger than the outer diameters of the cylindrical barrel body of the traction head and the explosion-proof motor.
As a further improvement of the technical scheme of the invention, all the steel bar hoops positioned outside the steel bar are provided with an opening; at least three first pull rings are arranged on the end face of the cylindrical barrel body located at the other end of the rotating shaft in a surrounding mode along the circumferential direction, at least three second pull rings and at least three third pull rings are arranged at the two ends of the steel bar, at least three fourth pull rings are arranged on the shell of the explosion-proof motor in a surrounding mode, all the second pull rings are in one-to-one correspondence with the first pull rings and are sleeved with the first pull rings, and all the third pull rings are in one-to-one correspondence with the fourth pull rings and are sleeved with the first pull rings.
As a further improvement of the technical scheme of the invention, all the worm gears are respectively arranged on the reinforcing steel bar hoops on the reinforcing steel bar frame at intervals.
As a further improvement of the technical scheme of the invention, the positions of the openings on all the steel bar hoops are positioned on the same straight line.
As a further improvement of the technical scheme of the invention, the end face of the cylindrical barrel close to the conical round table is provided with a camera.
As a further improvement of the technical scheme of the invention, the end surface of the cylindrical barrel close to the conical round table is a conical surface in transition fit with the conical round table.
As a further improvement of the technical scheme of the invention, the outer edge of the steel bar hoop corresponding to the steel bar is provided with an arc groove matched with the steel bar.
Compared with the prior art, the deep mine drilling traction device has the following beneficial effects:
(1) The invention is arranged at the head part of the fracturing device, provides additional traction power for the fracturing device and is convenient to send the fracturing device to the deep part of a drilling hole. The difficulty of sending and taking the fracturing device is reduced.
(2) The invention adopts a plurality of groups of worm wheel-worm mechanisms, so that the worm wheel-worm mechanism has certain redundancy characteristic. Even if individual worm gear-worm mechanism breaks down, draw gear still can work. The reliability is high.
(3) The invention can crawl in two directions, after the fracturing operation of one section of drill hole is finished, the invention can crawl backwards to the next section of drill hole to continue the fracturing operation, and the invention can be applied to the staged fracturing operation of the drill hole of the deep mine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the deep mine drilling traction device.
Fig. 2 is a schematic structural view of the traction head.
Fig. 3 is a schematic structural view of the crawling mechanism.
Fig. 4 is a schematic structural view of the reinforcement cage body.
Fig. 5 is a schematic view of the connection between the reinforcing bar hoop and the reinforcing bar.
Fig. 6 is a schematic view of the worm wheel and worm.
Fig. 7 is a using state diagram of the deep mine drilling traction device.
In the figure: 1-a traction head, 101-a cylindrical barrel, 102-a cone frustum, 103-a helical tooth, 104-a cone drill bit, 105-a first pull ring, 106-a camera, 2-a crawling mechanism, 201-a steel bar hoop, 202-a steel bar rod, 203-a worm wheel, 204-a worm, 205-a second pull ring, 206-a third pull ring, 207-an opening, 208-an output shaft, 3-an explosion-proof motor, 301-a fourth pull ring and 302-a fifth pull ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the invention provides a specific embodiment of a deep mine drilling traction device, which comprises a traction head 1, a crawling mechanism 2 and an explosion-proof motor 3;
the traction head 1 comprises a cylindrical barrel 101, a rotating shaft rotatably arranged in a central hole of the cylindrical barrel 101, a conical round table 102 coaxially fixed at one end of the rotating shaft and extending out of the cylindrical barrel 101, helical teeth 103 annularly arranged on the conical surface of the conical round table 102, and a conical drill bit 104 coaxially fixed on the small end surface of the conical round table 102;
the crawling mechanism 2 comprises at least two steel bar hoops 201 which are coaxially arranged, at least three steel bars 202 which are jointly welded on the outer edges of all the steel bar hoops 201 along the axial direction of all the steel bar hoops 201, the steel bar hoops 201 and the steel bars 202 form a cylindrical steel bar frame body, at least one worm wheel 203 is rotatably installed on the steel bar hoops 201 between the adjacent steel bars 202, a worm 204 penetrates through the steel bar frame body, all the worm wheels 203 are matched with the worm 204, an output shaft 208 is fixedly arranged in the worm 204, one end of the output shaft 208 is coaxially and fixedly connected with the other end of a rotating shaft of the traction head 1, one end of the steel bar 202 is connected with the cylindrical barrel 101 of the traction head 1, the other end of the output shaft 208 is coaxially and fixedly connected with an output end of the explosion-proof motor 3, and the other end of the steel bar 202 is connected with a shell of the explosion-proof motor 3; the outer diameter of the steel reinforcement frame body is smaller than the outer diameters of the cylindrical barrel 101 of the traction head 1 and the explosion-proof motor 3, and the diameter of a circle formed by tooth tops of gear teeth on the outermost side of all worm gears 203 is larger than the outer diameters of the cylindrical barrel 101 of the traction head 1 and the explosion-proof motor 3.
The invention provides a specific working process of the deep mine drilling traction device, which comprises the following steps:
(1) Advancing process
As shown in fig. 7, the explosion-proof motor 3 is connected to the frac via a fifth pull ring 302. The cable is fixed on the fracturing device, and the power supply on the ground is connected with the explosion-proof motor 3 through the cable to provide power for the traction device. The explosion-proof motor 3 drives the worm 204 of the crawling mechanism 2 to rotate through the output shaft 208, and then transmits the rotation to the worm wheel 203 matched with the worm 204, so that the worm wheel 203 rotates outwards and drives the crawling mechanism 2 to crawl forwards. The spiral teeth 103 of the traction head 1 rotate and dig in, and simultaneously sweep aside the hard obstacles in front. The crawling mechanism 2 is matched with the traction head 1 to pull the fracturing device to the deep part of a drilled hole.
(2) Fallback procedure
The cable is reversely connected with a power supply, so that the explosion-proof motor 3 rotates reversely, the driving worm 204 rotates reversely, and then the power is transmitted to the worm wheel 203, the worm wheel 203 rotates inwards and drives the crawling mechanism 2 to crawl backwards, and the fracturing device is pulled to leave a drilled hole.
In specific implementation, the explosion-proof motor 3 can also be connected with the fracturing device through other connecting parts.
When the deep mine drilling traction device is used specifically, in order to enable the deep mine drilling traction device to adapt to the complicated and changeable geological conditions of drilling, further, all the steel bar hoops 201 outside the steel bar rods 202 are provided with openings 207; at least three first pull rings 105 are circumferentially arranged on the end face of the cylindrical barrel 101 at the other end of the rotating shaft, at least three second pull rings 205 and at least three third pull rings 206 are respectively arranged at two ends of the steel bar 202, at least three fourth pull rings 301 are annularly arranged on the casing of the explosion-proof motor 3, all the second pull rings 205 are in one-to-one correspondence with the first pull rings 105 and are sleeved with each other, and all the third pull rings 206 are in one-to-one correspondence with the fourth pull rings 301 and are sleeved with each other. Because the steel bar hoop 201 has certain elasticity, the arrangement of the opening 207 can enable the diameter of the steel bar hoop 201 to have certain variation allowance, and the two ends of the steel bar 202 are in a pull ring connection structure (the steel bar 202 has certain movement space in the radial direction relative to the traction head 1 and the explosion-proof motor 3), when the drilled hole is in an irregular shape, the steel bar hoop 201 at a narrower position can tightly close (or partially close) the opening 207 according to the width of the drilled hole, the diameter of a part of the steel bar frame body is reduced, so that the worm wheel 203 at the position is tightly matched with the worm 204, and the worm wheel 203 rotates along with the rotation of the worm 204; the reinforcing bar hoop 201 at the wider part is in a free state, the diameter of the reinforcing bar frame part is larger, so that the worm wheel 203 and the worm 204 are in a contact fit state, and the worm wheel 203 can rotate along with the rotation of the worm 204. Therefore, the diameter of the steel bar frame body can be automatically changed according to the drilling condition, the damage of drilling obstacles to the steel bar frame body is reduced, and the traction process can be smoother. Since the actual drilling condition cannot be a regular round hole shape, the crawling mechanism 2 in the present invention may have a situation that part of the worm wheel 203 rotates and part of the worm wheel 203 does not rotate during the actual use, but the forward and backward use of the crawling mechanism 2 is not affected.
As shown in fig. 3, all worm gears 203 are respectively spaced on the reinforcing bar hoop 201 on the reinforcing bar frame. On the basis of ensuring power, the integral rigidity of the steel bar frame body can be improved.
Specifically, the openings 207 of all the ferrules 201 are positioned on the same line. In use, as shown in fig. 5, the reinforcing rods 202 cannot be arranged on the reinforcing hoops 201 at the opening 207, and in order to maintain the stability and uniformity of the circumferential operation of the crawling mechanism 2, as shown in fig. 6, the reinforcing hoops 201 at both sides of the opening 207 are respectively provided with a turbine 203.
When the mine is drilled and tunneled to cause an obstacle such as mine collapse, in order to monitor the working condition of the traction head 1, the camera 106 is arranged on the end face of the cylindrical barrel 101 close to the conical round table 102. Preferably, the camera 106 is located outside the helical teeth 103, so as to avoid the helical teeth 103 from obstructing the view of the camera 106.
As shown in fig. 2, the end surface of the cylindrical barrel 101 close to the conical frustum 102 is a conical surface in transition fit with the conical frustum 102.
Further, in order to enhance the connection tightness between the reinforcing steel bar 202 and the reinforcing steel bar hoop 201 and enhance the rigidity of the steel bar frame, the outer edge of the reinforcing steel bar hoop 201 corresponding to the reinforcing steel bar 202 is provided with an arc-shaped groove adapted to the reinforcing steel bar 202. The arc-shaped groove increases the contact area between the reinforcing rods 202 and the reinforcing hoops 201, and improves the connection strength.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A deep mine drilling traction device is characterized by comprising a traction head (1), a crawling mechanism (2) and an explosion-proof motor (3);
the traction head (1) comprises a cylindrical barrel (101), a rotating shaft rotatably arranged in a central hole of the cylindrical barrel (101), a conical round table (102) coaxially fixed at one end of the rotating shaft and extending out of the cylindrical barrel (101), helical teeth (103) annularly arranged on the conical surface of the conical round table (102), and a conical drill bit (104) coaxially fixed on the small end surface of the conical round table (102);
the crawling mechanism (2) comprises at least two steel bar hoops (201) which are coaxially arranged, at least three steel bar rods (202) which are jointly welded to the outer edges of all the steel bar hoops (201) along the axial direction of all the steel bar hoops (201), a cylindrical steel bar frame body is formed by the steel bar hoops (201) and the steel bar rods (202), at least one worm wheel (203) is rotatably installed on the steel bar hoop (201) between every two adjacent steel bar rods (202), a worm (204) penetrates through the steel bar frame body, all the worm wheels (203) are matched with the worm (204), an output shaft (208) is fixedly arranged in the worm (204), one end of the output shaft (208) is coaxially and fixedly connected with the other end of a rotating shaft of the traction head (1), one end of each steel bar (202) is connected with the cylindrical barrel (101) of the traction head (1), the other end of the output shaft (208) is coaxially and fixedly connected with an output end of the explosion-proof motor (3), and the other end of each steel bar (202) is connected with a shell of the explosion-proof motor (3); the outer diameter of the steel bar frame body is smaller than the outer diameters of the cylindrical barrel body (101) of the traction head (1) and the explosion-proof motor (3), and the diameter of a circle formed by tooth tops of the outermost gear teeth of all the worm gears (203) is larger than the outer diameters of the cylindrical barrel body (101) of the traction head (1) and the explosion-proof motor (3);
all the steel bar hoops (201) positioned outside the steel bar (202) are provided with an opening (207); the end face of the cylindrical barrel body (101) located at the other end of the rotating shaft is provided with at least three first pull rings (105) in a surrounding mode in the circumferential direction, the two ends of the steel bar (202) are provided with at least three second pull rings (205) and third pull rings (206) respectively, the shell of the explosion-proof motor (3) is provided with at least three fourth pull rings (301), all the second pull rings (205) are in one-to-one correspondence with the first pull rings (105) and are sleeved with each other, and all the third pull rings (206) are in one-to-one correspondence with the fourth pull rings (301) and are sleeved with each other.
2. The deep mine borehole pulling apparatus as claimed in claim 1, wherein all worm gears (203) are respectively provided at intervals on a reinforcing bar hoop (201) on the reinforcement cage body.
3. A deep mine borehole pulling apparatus according to claim 1, wherein the openings (207) of all of the reinforcing steel hoops (201) are positioned in the same line.
4. The deep mine borehole pulling apparatus according to claim 1, wherein a camera (106) is provided on an end surface of the cylindrical barrel (101) adjacent to the conical frustum (102).
5. The deep mine drilling traction device as claimed in claim 1, wherein the end surface of the cylindrical barrel (101) close to the conical frustum (102) is a conical surface in transition fit with the conical frustum (102).
6. The deep mine drilling traction device as claimed in claim 1, wherein the outer edge of the reinforcing steel hoop (201) corresponding to the reinforcing steel bar (202) is provided with an arc-shaped groove matched with the reinforcing steel bar (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717761.9A CN113374429B (en) | 2021-06-28 | 2021-06-28 | Deep mine drilling draw gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717761.9A CN113374429B (en) | 2021-06-28 | 2021-06-28 | Deep mine drilling draw gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113374429A CN113374429A (en) | 2021-09-10 |
| CN113374429B true CN113374429B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110717761.9A Active CN113374429B (en) | 2021-06-28 | 2021-06-28 | Deep mine drilling draw gear |
Country Status (1)
| Country | Link |
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| CN (1) | CN113374429B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115822487A (en) * | 2022-06-28 | 2023-03-21 | 中国石油天然气集团有限公司 | Downhole drilling tool pushing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB655933A (en) * | 1946-05-11 | 1951-08-08 | Leslie Norman Weekes | Improvements in and relating to devices for cutting holes in the ground |
| CN1976148A (en) * | 2006-12-05 | 2007-06-06 | 福建师范大学 | Cable tractor for laying pipe cable |
| CN103015894A (en) * | 2013-01-21 | 2013-04-03 | 西南石油大学 | Friction and resistance reducing tool with axial crawling function |
| CN203161100U (en) * | 2013-03-21 | 2013-08-28 | 西南石油大学 | Downhole motor capable of improving extending capacity of drill column |
| CN107060675A (en) * | 2017-05-22 | 2017-08-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of underground hydraulic pressure drives turbocharging tractor |
| CN110761742A (en) * | 2019-10-17 | 2020-02-07 | 辉县市银茂数控设备有限公司 | Pipeline internal climbing power device |
-
2021
- 2021-06-28 CN CN202110717761.9A patent/CN113374429B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB655933A (en) * | 1946-05-11 | 1951-08-08 | Leslie Norman Weekes | Improvements in and relating to devices for cutting holes in the ground |
| CN1976148A (en) * | 2006-12-05 | 2007-06-06 | 福建师范大学 | Cable tractor for laying pipe cable |
| CN103015894A (en) * | 2013-01-21 | 2013-04-03 | 西南石油大学 | Friction and resistance reducing tool with axial crawling function |
| CN203161100U (en) * | 2013-03-21 | 2013-08-28 | 西南石油大学 | Downhole motor capable of improving extending capacity of drill column |
| CN107060675A (en) * | 2017-05-22 | 2017-08-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of underground hydraulic pressure drives turbocharging tractor |
| CN110761742A (en) * | 2019-10-17 | 2020-02-07 | 辉县市银茂数控设备有限公司 | Pipeline internal climbing power device |
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| CN113374429A (en) | 2021-09-10 |
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Inventor after: Wu Zhibo Inventor after: Li Fan Inventor after: Ma Tiehua Inventor after: Zhang Hongyan Inventor after: Li Lanfei Inventor after: Feng Lei Inventor after: Sun Chuanmeng Inventor after: Chen Changxin Inventor after: Cui Chunsheng Inventor after: Jiao Bin Inventor before: Ma Tiehua Inventor before: Li Fan Inventor before: Wu Zhibo Inventor before: Zhang Hongyan Inventor before: Li Lanfei Inventor before: Feng Lei Inventor before: Sun Chuanmeng Inventor before: Chen Changxin Inventor before: Cui Chunsheng Inventor before: Jiao Bin |
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