CN110469264B - Drill rod guiding device - Google Patents
Drill rod guiding device Download PDFInfo
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- CN110469264B CN110469264B CN201910855464.3A CN201910855464A CN110469264B CN 110469264 B CN110469264 B CN 110469264B CN 201910855464 A CN201910855464 A CN 201910855464A CN 110469264 B CN110469264 B CN 110469264B
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- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000005553 drilling Methods 0.000 abstract description 27
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 240000000528 Ricinus communis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 discloses a drill rod guiding device, which is a device capable of being suitable for drill rods with different sizes and guiding the drill rods to reduce the swinging amount during the drilling and digging. The whole lead screw rocking wheel is adjusted, the adjusting mode is simple and convenient, and the operation is convenient. The novel screw driver is characterized in that the two supporting plates are oppositely arranged and are parallel to each other, connecting sleeves are respectively arranged at the bottoms of two side edges of the supporting plates, the connecting sleeves on the two supporting plates are in one-to-one correspondence, one end of a screw rod is rotatably arranged in the connecting sleeve on one side edge of one supporting plate, the other end of the screw rod penetrates through the corresponding connecting sleeve on the side edge of the other supporting plate, the outer side surface of one end of the screw rod is a smooth surface, the screw rod is in threaded connection with the connecting sleeve on the other supporting plate, a rocking wheel is arranged at the other end of the screw rod, and one end of a sliding rail is fixedly arranged in the connecting sleeve on the other side edge of one supporting plate.
Description
Technical Field
The invention discloses a drill rod guiding device, relates to a device for guiding a drill rod in a drilling and digging process, and belongs to the field of mechanical equipment. In particular to a device which can be suitable for drill rods with different sizes and can guide the drill rods to reduce the swing amount during the lifting and digging.
Background
The drilling rod is a steel pipe with a thread at the tail part and is used for connecting equipment on the earth surface of a drilling machine and drilling and grinding equipment or a bottom hole device positioned at the bottom end of a drilling well, the drilling rod is used for conveying drilling mud to a drill bit and improving, reducing or rotating the bottom hole device together with the drill bit.
Publication number CN205172432U discloses a drill rod guiding device and a drilling machine with the same, comprising: the guide support is connected to the drill rod equipment and used for supporting the drill rod to play a role in guiding when the drill rod works, and a through hole for the drill rod to penetrate through is formed in the guide support; the periphery along the through-hole on the guide bracket sets up a plurality of guide wheel axles that radial position adjustable along the through-hole, rotates on the guide wheel axle and connects the leading wheel that is used for supporting the drilling rod, and the drilling rod supports the direction through a plurality of leading wheels, and the device need adjust 3 leading wheels of group respectively alone when adjusting the leading wheel, and the regulation mode is comparatively loaded down with trivial details inconvenient.
Notice No. CN107366517A discloses a drilling rod leading truck, including drilling rod, last drilling rod leading truck and lower drilling rod leading truck, be provided with the drilling rod holder on the drilling rod, go up to be provided with drilling rod leading truck hydro-cylinder on the drilling rod leading truck, be provided with drilling rod leading truck hydro-cylinder down on the drilling rod leading truck, this drilling rod holder structure is fixed, can not adapt to the adjustment to the not drilling rod of equidimension radius, uses and has certain limitation.
Disclosure of Invention
In order to improve the situation, the drill rod guiding device provided by the invention can be suitable for drill rods with different sizes, and can guide the drill rods to reduce the swing amount during the drilling and digging. The whole lead screw rocking wheel is adjusted, the adjusting mode is simple and convenient, and the operation is convenient.
The drill rod guide device is realized by the following steps: the invention relates to a drill rod guiding device which comprises supporting plates, a fixing rod, a guide wheel, a slide rail, an oil cylinder, a connecting lug, a positioning nail, a rocking wheel, connecting sleeves, screw rods, universal castors, a fixing shaft, a limiting ring, a drill rod, a connecting shaft, a positioning seat and a fixing lug, wherein the two supporting plates are oppositely arranged, the two supporting plates are parallel to each other, the connecting sleeves are respectively arranged at the bottoms of two side edges of the supporting plates, the connecting sleeves on the two supporting plates are in one-to-one correspondence, one end of each screw rod is rotatably arranged in the connecting sleeve on one side edge of one supporting plate, the other end of each screw rod penetrates through the corresponding connecting sleeve on the other side edge of the other supporting plate, the outer side surface of one end of each screw rod is a smooth surface, the screw rods are connected with the connecting sleeves on the other supporting plate through threads, the rocking wheel is arranged at the other end of each screw rod, one end of the slide rail is fixedly arranged in the connecting sleeve on the other side edge of one supporting plate, the other end of the slide rail can slide through the corresponding connecting sleeve on the side edge of the other supporting plate, a limiting block is arranged at the other end of the slide rail, a universal caster is arranged at the bottom of the connecting sleeve, fixing lugs are respectively arranged at the middle part of the top edge and the middle part of the bottom edge of the supporting plate, the fixing lugs are positioned between the two supporting plates, two ends of the fixing shaft are respectively arranged on the two fixing lugs on the supporting plates, one ends of the two fixing rods are respectively rotatably sleeved on the fixing shaft and are close to the top end of the fixing shaft, one ends of the other two fixing rods are respectively rotatably sleeved on the fixing shaft and are close to the bottom end of the fixing shaft, the top ends of the two connecting shafts are respectively connected with the other ends of the two fixing rods at the top end of the fixing shaft, a rotatable guide wheel is sleeved on the connecting shaft, the supporting plate is of a rectangular plate-shaped structure, a group of connecting lugs is respectively arranged at four corners of the surface of the supporting plate with the fixing lugs, one group of connecting lugs consists of two connecting lugs, fixed ends of four oil cylinders are respectively hinged with the group of connecting lugs at four angular positions of the supporting plate through a hinge shaft, telescopic ends of four oil cylinders are respectively hinged with four fixing rods on adjacent fixing shafts, an anti-skid pad is arranged on the surface of the guide wheel, a positioning seat is arranged on the surface of the supporting plate, which is opposite to the guide wheel, the positioning seat is positioned in the middle position of the bottom edge of the supporting plate, a positioning nail is arranged on the positioning seat, two limiting rings are sleeved on the fixing shaft, one of the two fixing rods is positioned below the top end of the fixing shaft, the other fixing rod is positioned above the bottom end of the fixing shaft, the width of the connecting side of the fixing lugs and the supporting plate is larger than that of the other side, and the fixing lugs and the supporting plate are integrally formed, the sliding rail is of a round rod-shaped structure, a smooth wear-resistant layer is arranged on the surface of the sliding rail, two reinforcing blocks are arranged on the surface of the supporting plate, which is opposite to the guide wheel, and the two reinforcing blocks are respectively positioned at two corner positions below the supporting plate;
furthermore, a hollow part is arranged on the supporting plate, and the width of the hollow part is greater than three-fourths of the width of the supporting plate;
furthermore, the middle part of the guide wheel is provided with a roller brush, and the circumferential surface of the outer side of the roller brush is provided with brush hair.
Has the beneficial effects.
Firstly, the drilling machine is guided and positioned, the swing amount of the drill rod is reduced, and the drilling precision is guaranteed.
And the angle-adjustable guide roller structure can meet the guide requirements of drill rods with different sizes.
And thirdly, the whole lead screw rocking wheel is adjusted, the adjusting mode is simple, convenient and fast, and the operation is convenient.
And fourthly, the guide wheel type guide structure changes sliding friction into rolling friction, so that the abrasion of the common guide structure to the drill rod during guiding is reduced.
And the universal caster wheels are arranged at the bottom, so that the device is convenient to move and use.
Sixthly, the surface of the drill rod can be cleaned to a certain degree while the drill rod is guided.
Drawings
FIG. 1 is a perspective view of a drill rod guide of the present invention;
FIG. 2 is a schematic view of a drill rod guide of the present invention;
FIG. 3 is a schematic view of a drill rod guide of the present invention in use;
FIG. 4 is a perspective view of a drill rod guide embodiment 2 of the present invention;
FIG. 5 is a schematic view of the structure of an embodiment 3 of the drill rod guider.
In the attached drawings
Wherein the method comprises the following steps: the device comprises a supporting plate (1), a fixing rod (2), a guide wheel (3), a sliding rail (4), an oil cylinder (5), a connecting lug (6), a positioning nail (7), a rocking wheel (8), a connecting sleeve (9), a lead screw (10), a universal caster (11), a fixing shaft (12), a limiting ring (13), a drill rod (14), a hollowed-out part (15), a connecting shaft (16), a roller brush (17), a positioning seat (18) and a fixing lug (19).
The specific implementation mode is as follows:
example 1:
the invention relates to a drill rod (14) guiding device, which is realized by the following steps: the invention relates to a drill rod guide device which comprises support plates (1), a fixed rod (2), a guide wheel (3), a slide rail (4), an oil cylinder (5), a connecting lug (6), a positioning nail (7), a rocking wheel (8), a connecting sleeve (9), a screw rod (10), a universal caster (11), a fixed shaft (12), a limiting ring (13), a drill rod (14), a connecting shaft (16), a positioning seat (18) and a fixing lug (19), wherein the two support plates (1) are oppositely arranged, the two support plates (1) are mutually parallel, the connecting sleeves (9) are respectively arranged at the bottoms of two side edges of the support plates (1), the connecting sleeves (9) on the two support plates (1) are in one-to-one correspondence, one end of the screw rod (10) is rotatably arranged in the connecting sleeve (9) on one side edge of one of the support plates (1), and the other end of the screw rod (10) passes through the corresponding connecting sleeve (9) on the side edge of the other support plate (1), the outer side face of one end of the screw rod (10) is a smooth face, the screw rod (10) is connected with a connecting sleeve (9) on another supporting plate (1) through threads, a rocking wheel (8) is arranged at the other end of the screw rod (10), one end of a sliding rail (4) is fixedly arranged in the connecting sleeve (9) on the other side edge of one supporting plate (1), the other end of the sliding rail (4) can pass through the corresponding connecting sleeve (9) on the side edge of the other supporting plate (1) in a sliding manner, a limiting block is arranged at the other end of the sliding rail (4), a universal caster (11) is arranged at the bottom of the connecting sleeve (9), fixing lugs (19) are respectively arranged in the middle of the top edge and the middle of the bottom edge of the supporting plate (1), the fixing lugs (19) are positioned between the two supporting plates (1), two ends of a fixing shaft (12) are respectively arranged on the two fixing lugs (19) on the supporting plate (1), one end of each of the two fixing rods (2) is rotatably sleeved on the fixing shaft (12) and is close to the top end of the fixing shaft (12), one end of each of the other two fixing rods (2) is rotatably sleeved on the fixing shaft (12) and is close to the bottom end of the fixing shaft (12), the top ends of the two connecting shafts (16) are connected with the other ends of the two fixing rods (2) at the top end of the fixing shaft (12), the bottom ends of the two connecting shafts (16) are connected with the other ends of the two fixing rods (2) at the bottom end of the fixing shaft (12), the connecting shafts (16) are sleeved with the rotatable guide wheels (3), the supporting plate (1) is of a rectangular plate-shaped structure, a group of connecting lugs (6) are arranged at four angular positions of the surface of the supporting plate (1) with the fixing lugs (19), the group of connecting lugs (6) is composed of the two connecting lugs (6), and the fixed ends of the four oil cylinders (5) are connected with the connecting lugs (3) (the supporting plate (1) at four angular positions through hinge shafts respectively 6) The group is hinged, the telescopic ends of the four oil cylinders (5) are respectively hinged with the four fixing rods (2) on the adjacent fixing shafts (12), the surface of the guide wheel (3) is provided with an anti-skid pad, the surface of the support plate (1) back to the guide wheel (3) is provided with a positioning seat (18), the positioning seat (18) is positioned in the middle position of the bottom edge of the support plate (1), a positioning nail (7) is arranged on the positioning seat (18), the fixing shafts (12) are sleeved with two limiting rings (13), one of the two limiting rings is positioned below the two fixing rods (2) at the top end of the fixing shaft (12), the other is positioned above the two fixing rods (2) at the bottom end of the fixing shaft (12), the width of the connecting side of the fixing lug (19) and the support plate (1) is larger than that of the other side, the fixing lug (19) and the support plate (1) are integrally formed, the slide rail (4) is of a round rod-shaped structure, a smooth wear-resistant layer is arranged on the surface of the sliding rail (4), two reinforcing blocks are arranged on the surface of the supporting plate (1) back to the guide wheel (3), and the two reinforcing blocks are respectively positioned at two corner positions below the supporting plate (1);
when the device is used, the device is installed and fixed on a tunneling surface through a positioning nail (7), a drill rod (14) penetrates through the center of the device, a crank is rotated to drive a screw rod (10) to rotate, the screw rod (10) and a connecting sleeve (9) on the other supporting plate (1) form a spiral propelling structure, the supporting plate (1) on one side of the crank is matched with the screw rod (10) and a sliding rail (4) to move towards the supporting plate (1) on the other side, the drill rod (14) is clamped in the middle part through four groups of guide wheels (3), when the drill rod (14) rotates, the drill rod (14) is guided and clamped through the 4 guide wheels (3), meanwhile, the guiding and clamping friction force is changed into rolling friction force, and the abrasion force of the guide wheels (3) on the drill rod (14) during guiding is reduced;
personnel drive a piston rod to extend or contract by controlling the oil cylinder (5) so as to adjust the included angle of the two guide wheels (3) on the support plate (1) and ensure good guide performance of drill rods (14) with different sizes;
example 2:
the difference between this example and example 1 is: a hollow part (15) is arranged on the supporting plate (1); when in use, the self weight of the support plate (1) is reduced, the movement is convenient, and the production cost is reduced;
example 3:
the difference between this example and example 1 is: the middle part of the guide wheel (3) is provided with a roller brush (17), and the outer circumferential surface of the roller brush (17) is provided with bristles; in use, the drill rod (14) is guided while the outer surface of the drill rod (14) is properly cleaned.
The width of the hollow part (15) is more than three-fourths of the width of the supporting plate (1), so that the weight of the device can be reduced as much as possible, and the device is more convenient to move;
the outer side surface of one end of the screw rod (10) is a smooth surface, so that one end of the screw rod (10) can rotate in the connecting sleeve (9);
a limiting block is arranged at the other end of the sliding rail (4) to limit the connecting sleeve (9) and avoid separation from the sliding rail (4);
the bottom of the connecting sleeve (9) is provided with a universal caster (11), so that the device is convenient to push and more convenient to use;
the surface of the guide wheel (3) is provided with an anti-slip pad, so that the guide wheel (3) and the drill rod (14) can be prevented from slipping, and the guide effect on the drill rod (14) is ensured;
the two limiting rings (13) are sleeved on the fixed shaft (12), one of the limiting rings is positioned below the two fixing rods (2) at the top end of the fixed shaft (12), and the other limiting ring is positioned above the two fixing rods (2) at the bottom end of the fixed shaft (12), so that the fixing rods (2) at the top end and the bottom end of the fixed shaft (12) can be limited, and the forced sliding deformation on the fixed shaft (12) is avoided;
the width of the connecting side of the fixing lug (19) and the supporting plate (1) is larger than that of the other side, so that the connecting area of the fixing lug (19) and the supporting plate (1) is increased, and the connecting strength is improved;
the sliding rail (4) is of a round rod-shaped structure, a smooth wear-resistant layer is arranged on the surface of the sliding rail (4), so that the friction force between the sliding rail (4) and the connecting sleeve (9) can be further reduced, and the connecting sleeve (9) can smoothly move along the sliding rail (4);
two reinforcing blocks are arranged on the surface of the supporting plate (1) back to the guide wheel (3) and are respectively positioned at two corner positions below the supporting plate (1), and the two corner positions at the bottom edge of the supporting plate (1) are reinforced, so that the connecting strength at the connecting sleeve (9) is improved, and the fracture damage is avoided;
the guide wheels (3) are matched with the fixed rod (2) and the oil cylinder (5), so that the angle between the two guide wheels (3) on the support plate (1) can be adjusted to be suitable for drill rods (14) with different sizes;
the lead screw (10) and the connecting sleeve (9) are matched with the supporting plates (1), the distance between the two supporting plates (1) can be adjusted, so that the drill rod (14) can be clamped and positioned, the drill rod (14) can be guided when working, and the swinging amount of the drill rod (14) during drilling is reduced;
the rocking wheel (8) is rotated, the connecting sleeve (9) moves along the screw rod (10), and the distance between the two supporting plates (1) can be adjusted to adapt to drill rods (14) with different sizes;
the rocking wheel (8) is rotated, the single supporting plate (1) moves, the drill rod (14) can be clamped only by adjusting the position of the single supporting plate (1), and the adjustment and the use are convenient;
the purpose of being suitable for the drill rods (14) with different sizes and guiding the drill rods (14) to reduce the swinging amount during the lifting and digging is achieved.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (9)
1. A drill rod guiding device is characterized in that: the device comprises supporting plates, a fixing rod, a guide wheel, a slide rail, an oil cylinder, a connecting lug, a positioning nail, a rocking wheel, a connecting sleeve, a screw rod, a universal caster, a fixing shaft, a limiting ring, a drill rod, a connecting shaft, a positioning seat and a fixing lug, wherein the two supporting plates are oppositely arranged and are parallel to each other, the bottom parts of two side edges of the supporting plates are respectively provided with the connecting sleeve, the connecting sleeves on the two supporting plates are in one-to-one correspondence, one end of the screw rod is rotatably arranged in the connecting sleeve on one side edge of one supporting plate, the other end of the screw rod penetrates through the corresponding connecting sleeve on the side edge of the other supporting plate, the outer side surface of one end of the screw rod is a smooth surface, the screw rod is in threaded connection with the connecting sleeve on the other supporting plate, the rocking wheel is arranged at the other end of the screw rod, one end of the slide rail is fixedly arranged in the connecting sleeve on the other side edge of one supporting plate, the other end of the slide rail can slide through the corresponding connecting sleeve on the side edge of the other supporting plate, a limiting block is arranged at the other end of the slide rail, a universal caster is arranged at the bottom of the connecting sleeve, fixing lugs are respectively arranged at the middle part of the top edge and the middle part of the bottom edge of the supporting plate, the fixing lugs are positioned between the two supporting plates, two ends of the fixing shaft are respectively arranged on the two fixing lugs on the supporting plates, one ends of the two fixing rods are respectively rotatably sleeved on the fixing shaft and are close to the top end of the fixing shaft, one ends of the other two fixing rods are respectively rotatably sleeved on the fixing shaft and are close to the bottom end of the fixing shaft, the top ends of the two connecting shafts are respectively connected with the other ends of the two fixing rods at the top end of the fixing shaft, a rotatable guide wheel is sleeved on the connecting shaft, the fixing ends of the four oil cylinders are hinged with the connecting lug groups at four angular positions of the support plate through hinge shafts respectively, the telescopic ends of the four oil cylinders are hinged with the four fixing rods on the adjacent fixing shafts respectively, the surface of the guide wheel is provided with an anti-slip mat, the surface of the support plate, which faces away from the guide wheel, is provided with a positioning seat, the positioning seat is positioned in the middle position of the bottom edge of the support plate, a positioning nail is arranged on the positioning seat, the fixing shaft is sleeved with two limiting rings, one of the limiting rings is positioned below the two fixing rods at the top end of the fixing shaft, and the other one of the limiting rings is positioned above the two fixing rods at the bottom end of the fixing shaft, so that the fixing rods at the top end and the bottom end of the fixing shaft can be limited, and the forced sliding deformation on the fixing shaft is avoided.
2. The drill rod guide device as recited in claim 1, wherein the support plate has a cutout portion.
3. The drill rod guiding device as claimed in claim 1, wherein the middle part of the guide wheel is provided with a roller brush, and bristles are arranged on the outer circumferential surface of the roller brush, so that when the device is used, the outer surface of the drill rod is properly cleaned while the drill rod is guided.
4. The drill rod guide device as claimed in claim 1, wherein a set of engaging lugs is respectively arranged at four corners of the face of the support plate with the fixing lugs, and the set of engaging lugs consists of two engaging lugs.
5. The drill rod guide device as recited in claim 1, wherein the width of the connecting side of the fixing lug and the support plate is larger than that of the other side, and the fixing lug and the support plate are integrally formed.
6. The drill rod guide as claimed in claim 1, wherein the support plate is of rectangular plate-like configuration.
7. The drill rod guide device as recited in claim 1, wherein the slide rail is a circular rod-shaped structure, and a smooth wear-resistant layer is disposed on the surface of the slide rail.
8. The drill rod guide device as claimed in claim 6, wherein the support plate is provided with two reinforcing blocks on the surface facing away from the guide wheel, and the two reinforcing blocks are respectively positioned at two corner positions below the support plate.
9. The drill rod guiding device as claimed in claim 1, wherein the control cylinder drives the piston rod to extend or retract so as to adjust the included angle between the two guide wheels on the supporting plate, thereby ensuring good guiding performance for drill rods of different sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855464.3A CN110469264B (en) | 2019-09-11 | 2019-09-11 | Drill rod guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855464.3A CN110469264B (en) | 2019-09-11 | 2019-09-11 | Drill rod guiding device |
Publications (2)
| Publication Number | Publication Date |
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| CN110469264A CN110469264A (en) | 2019-11-19 |
| CN110469264B true CN110469264B (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910855464.3A Active CN110469264B (en) | 2019-09-11 | 2019-09-11 | Drill rod guiding device |
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| CN (1) | CN110469264B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201474628U (en) * | 2009-07-30 | 2010-05-19 | 无锡金帆钻凿设备有限公司 | Drill stem righting mechanism |
| CN203452679U (en) * | 2013-08-23 | 2014-02-26 | 四川宏华石油设备有限公司 | Roller clamping device for drilling tools |
| CN103850659A (en) * | 2014-03-28 | 2014-06-11 | 湖南科技大学 | Drill rod centering adjuster |
| CN204591172U (en) * | 2015-05-14 | 2015-08-26 | 中国石油大学(华东) | A kind of novel adjustable wellhead formula workover rig |
| CN108240182A (en) * | 2018-01-05 | 2018-07-03 | 深圳市中科智诚科技有限公司 | A kind of intelligent drill rod grip device for no-dig technique horizontal directional drilling machine |
-
2019
- 2019-09-11 CN CN201910855464.3A patent/CN110469264B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201474628U (en) * | 2009-07-30 | 2010-05-19 | 无锡金帆钻凿设备有限公司 | Drill stem righting mechanism |
| CN203452679U (en) * | 2013-08-23 | 2014-02-26 | 四川宏华石油设备有限公司 | Roller clamping device for drilling tools |
| CN103850659A (en) * | 2014-03-28 | 2014-06-11 | 湖南科技大学 | Drill rod centering adjuster |
| CN204591172U (en) * | 2015-05-14 | 2015-08-26 | 中国石油大学(华东) | A kind of novel adjustable wellhead formula workover rig |
| CN108240182A (en) * | 2018-01-05 | 2018-07-03 | 深圳市中科智诚科技有限公司 | A kind of intelligent drill rod grip device for no-dig technique horizontal directional drilling machine |
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| Publication number | Publication date |
|---|---|
| CN110469264A (en) | 2019-11-19 |
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