CN110469264A - A kind of drill rod-guiding device - Google Patents
A kind of drill rod-guiding device Download PDFInfo
- Publication number
- CN110469264A CN110469264A CN201910855464.3A CN201910855464A CN110469264A CN 110469264 A CN110469264 A CN 110469264A CN 201910855464 A CN201910855464 A CN 201910855464A CN 110469264 A CN110469264 A CN 110469264A
- Authority
- CN
- China
- Prior art keywords
- support plate
- connector sleeve
- fixing axle
- lead screw
- guiding device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 67
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
A kind of drill rod-guiding device of the present invention, which discloses one kind, can be applicable in different size of drilling rod, and the device for being oriented to oscillating quantity when having reduced drilling can be carried out to drilling rod.Whole lead screw rolled round is adjusted, and regulative mode is simple and convenient, easy to operate.It is characterized in that two support plates are staggered relatively, and two support plates are parallel to each other, the two sides bottom of the support plate is equipped with connector sleeve respectively, and the connector sleeve in two support plates corresponds, one end of lead screw is rotatably placed in one in the connector sleeve in a support plate a side, the other end of the lead screw on another support plate side in corresponding connector sleeve from passing through, one end lateral surface of the lead screw is shiny surface, connector sleeve on the lead screw and another support plate is connected through a screw thread, rolled round is equipped on the other end of the lead screw, the fixation of sliding rail one end is placed in one in the connector sleeve on an another side of support plate.
Description
Technical field
A kind of drill rod-guiding device of the present invention, is related to a kind of device being oriented to during drilling rod drilling to it, belongs to
In machinery equipment field.In particular to one kind can be applicable in different size of drilling rod, and drilling rod can be carried out guiding reduce
The device of oscillating quantity when drilling.
Background technique
Drilling rod is a kind of screwed steel pipe in tail portion, is set for connecting drilling machine landscape apparatus and boring mill positioned at drilling well bottom end
Standby or bottom outlet device, the purposes of drilling rod are drilling mud to be transported to drill bit, and bottom outlet is improved, reduced or rotated together with drill bit
Device, currently, and existing drilling machine lacks necessary guiding device mostly since it is with longer length when drilling rod uses, because
The oscillating quantity of this drilling rod when carrying out drilling is larger, be easy it is stuck cause drilling machine to damage, while excessive drill pipe wobbling amount also shadow
The precision of drilling is rung, brings puzzlement to excavate boring work.
Notification number CN205172432U discloses a kind of drill rod-guiding device and the drilling machine with it, comprising: guiding trestle,
It is connected to drill sting device, is used to support drilling rod to play the guiding role when drilling rod works, setting is penetrated through for drilling rod on guiding trestle
Through-hole；Multiple adjustable guide wheel shafts of the radial position along through-hole, guide wheel shaft is arranged in periphery on guiding trestle along through-hole
Upper to be rotatablely connected the directive wheel for being used to support drilling rod, drilling rod is adjusted through multiple directive wheel support guides, the device to directive wheel
When need individually to adjust 3 groups of directive wheels, the relatively complicated inconvenience of regulative mode.
Notification number CN107366517A discloses a kind of drilling rod leading truck, including drilling rod, upper drilling rod leading truck and lower drilling rod
Leading truck is provided with drill pipe cage on drilling rod, and drilling rod leading truck oil cylinder, lower drilling rod guiding are provided on upper drilling rod leading truck
Lower drilling rod leading truck oil cylinder is provided on frame, which fixes, and cannot carry out to the drilling rod of different size radius
Adjustment is adapted to, using with certain limitation.
Summary of the invention
In order to improve above situation, a kind of drill rod-guiding device of the present invention, which provides one kind, can be applicable in different size of brill
Bar, and the device for being oriented to oscillating quantity when having reduced drilling can be carried out to drilling rod.Whole lead screw rolled round is adjusted, and regulative mode is simple
It is convenient, it is easy to operate.
A kind of drill rod-guiding device of the present invention is achieved in that a kind of drill rod-guiding device of the present invention by support plate, solid
Fixed pole, directive wheel, sliding rail, oil cylinder, engaging lug, locating pin, rolled round, connector sleeve, lead screw, universal caster wheel, fixing axle, stop collar,
Drilling rod, connecting shaft, positioning seat and fixed ear composition, two support plates are staggered relatively, and two support plates are mutually flat
Row, the two sides bottom of the support plate are equipped with connector sleeve respectively, and the connector sleeve in two support plates corresponds, lead screw
One end is rotatably placed in one in the connector sleeve in a support plate a side, and the other end of the lead screw is supported from another
It is passed through in corresponding connector sleeve on plate side, one end lateral surface of the lead screw is shiny surface, the lead screw and another branch
Connector sleeve on fagging is connected through a screw thread, and is equipped with rolled round on the other end of the lead screw, and sliding rail one end is fixed to be placed in one one
In connector sleeve on a another side of support plate, the other end of the sliding rail is from corresponding connection on another support plate side
It can be slid through in set, limited block be equipped on the other end of the sliding rail, the bottom of the connector sleeve is equipped with universal caster wheel, described
Fixed ear is equipped in the middle part of the top margin of support plate and in the middle part of bottom edge respectively, the fixed ear is located between two support plates, fixing axle
Both ends be respectively placed in two fixed ears in support plate, two fixed link one end are rotatably placed on fixing axle respectively
On, and close to fixing axle top, other two fixed link one end is rotatably placed in fixing axle respectively, and close to fixing axle
Bottom end, the top of two connecting shafts are connected with two fixed link other ends on fixing axle top respectively, the top of two connecting shafts
End is connected with two fixed link other ends of fixing axle bottom end respectively, and rotatable directive wheel is equipped in the connecting shaft,
The support plate is rectangular plate-like structure, and four Angle Positions in face of the support plate with fixed ear are equipped with one group of connection respectively
Ear, engaging lug described in one group are made of two engaging lugs, and the fixing end of four oil cylinders passes through articulated shaft and support plate four respectively
The engaging lug group of Angle Position is hinged, and the telescopic end of four oil cylinders is mutually cut with scissors with four fixed links in adjacent fixing axle respectively
It connects, the surface of the directive wheel is equipped with non-slip mat, and the support plate is equipped with positioning seat, the positioning seat on the face of directive wheel
Positioned at support plate bottom edge middle position, locating pin is placed on positioning seat, is nested in the fixing axle there are two stop collar, and wherein
One is located at below two fixed links on fixing axle top, another is located above two fixed links of fixing axle bottom end, described
The width of fixed ear and support plate connecting side is greater than the other side, and the fixed ear and support plate are integrally formed, and the sliding rail is
Circular rod-shaped configuration, the surface of the sliding rail are equipped with one layer of smooth abrasion-proof layer, and the support plate is equipped on the face of directive wheel
Two reinforcement blocks, and it is located at two corner locations below support plate；
Further, hollow out position is equipped in the support plate, the width at the hollow out position is greater than four points of support board width
Three；
Further, it is roller brush in the middle part of the directive wheel, is equipped with bristle on the outer circumference face of the roller brush.
Beneficial effect.
One, guide-localization is carried out to drilling machine, reduces drill pipe wobbling amount, guarantee borehole accuracy.
Two, the guiding roll structure of adjustable-angle is suitable for the guiding demand of different size drilling rod.
Three, whole lead screw rolled round is adjusted, and regulative mode is simple and convenient, easy to operate.
Four, sliding friction is changed to rolling friction, to brill when reducing general orientation structure directing by guide wheel type guide frame
The abrasion of bar.
Five, bottom universal caster wheel, it is convenient that mobile use is carried out to device.
Six, certain cleaning can be carried out to its surface while guide rod.
Detailed description of the invention
A kind of three-dimensional structure diagram of drill rod-guiding device of Fig. 1 present invention；
A kind of structural schematic diagram of drill rod-guiding device of Fig. 2 present invention；
Structural schematic diagram when a kind of drill rod-guiding device of Fig. 3 present invention uses；
A kind of three-dimensional structure diagram of drill rod-guiding device embodiment 2 of Fig. 4 present invention；
A kind of structural schematic diagram of drill rod-guiding device embodiment 3 of Fig. 5 present invention.
In attached drawing
Wherein are as follows: support plate (1), fixed link (2), directive wheel (3), sliding rail (4), oil cylinder (5), engaging lug (6), locating pin (7),
Rolled round (8), connector sleeve (9), lead screw (10), universal caster wheel (11), fixing axle (12), stop collar (13), drilling rod (14), hollow-out parts
Position (15), connecting shaft (16), roller brush (17), positioning seat (18), fixed ear (19).
Specific embodiment:
Embodiment 1:
A kind of drilling rod (14) guiding device of the present invention be achieved in that a kind of drill rod-guiding device of the present invention by support plate (1),
Fixed link (2), directive wheel (3), sliding rail (4), oil cylinder (5), engaging lug (6), locating pin (7), rolled round (8), connector sleeve (9), silk
Thick stick (10), universal caster wheel (11), fixing axle (12), stop collar (13), drilling rod (14), connecting shaft (16), positioning seat (18) and solid
Determine ear (19) composition, two support plates (1) are staggered relatively, and two support plates (1) are parallel to each other, the support plate
(1) two sides bottom is equipped with connector sleeve (9) respectively, and the connector sleeve (9) on two support plates (1) corresponds, lead screw
(10) one end is rotatably placed in one the connector sleeve (9) in support plate (1) a side Nei, the lead screw (10) it is another
One end is passed through out of on another support plate (1) side corresponding connector sleeve (9), and one end lateral surface of the lead screw (10) is
Shiny surface, the connector sleeve (9) on the lead screw (10) and another support plate (1) are connected through a screw thread, the lead screw (10)
It is equipped on the other end rolled round (8), the fixed connector sleeve (9) being placed in one on an another side of support plate (1) in sliding rail (4) one end
Interior, the other end of the sliding rail (4) can be slid through out of on another support plate (1) side corresponding connector sleeve (9), institute
It states and is equipped with limited block on the other end of sliding rail (4), the bottom of the connector sleeve (9) is equipped with universal caster wheel (11), the support plate
(1) be equipped with respectively fixed ear (19) in the middle part of top margin and in the middle part of bottom edge, the fixed ear (19) be located at two support plates (1) it
Between, the both ends of fixing axle (12) are respectively placed on two fixed ears (19) on support plate (1), two fixed link (2) one end point
It is not placed on rotatably on fixing axle (12), and close to fixing axle (12) top, other two fixed link (2) one end respectively can
Rotation is placed on fixing axle (12), and close to fixing axle (12) bottom end, the top of two connecting shafts (16) is respectively and fixed
Two fixed link (2) other ends on axis (12) top are connected, the top of two connecting shafts (16) respectively with fixing axle (12) bottom
Two fixed link (2) other ends at end are connected, and are equipped with rotatable directive wheel (3), the branch on the connecting shaft (16)
Fagging (1) is rectangular plate-like structure, and four Angle Positions in face of the support plate (1) with fixed ear (19) are equipped with one group respectively
Engaging lug (6), engaging lug described in one group (6) are made of two engaging lugs (6), and the fixing end of four oil cylinders (5) passes through hinge respectively
Engaging lug (6) group of (1) four Angle Position of spindle and support plate is hinged, and the telescopic end of four oil cylinders (5) is respectively and phase
Four fixed links (2) on adjacent fixing axle (12) are hinged, and the surface of the directive wheel (3) is equipped with non-slip mat, the support plate
(1) it being equipped with positioning seat (18) on the face of directive wheel (3), the positioning seat (18) is located at support plate (1) bottom edge middle position,
Locating pin (7) is placed on positioning seat (18), is nested on the fixing axle (12) there are two stop collar (13), and one of them is located at
Below two fixed links (2) on fixing axle (12) top, another is located on two fixed links (2) of fixing axle (12) bottom end
The width of side, the fixed ear (19) and support plate (1) connecting side is greater than the other side, the fixed ear (19) and support plate (1)
It is integrally formed, the sliding rail (4) is circular rod-shaped configuration, and the surface of the sliding rail (4) is equipped with one layer of smooth abrasion-proof layer, described
Support plate (1) is set on the face of directive wheel (3) there are two reinforcement block, and is located at two corners below support plate (1)
Position；
In use, device is fixed in development end by locating pin (7) first, drilling rod (14) are passed through into device center,
Then lead screw (10) rotation is driven by rotation crank, the connector sleeve (9) on lead screw (10) and another support plate (1) forms spiral shell
Push structure is revolved, so that the support plate (1) of crank side cooperates lead screw (10) and sliding rail (4) to another side support plate (1)
Mobile, so that drilling rod (14) is clamped in intermediate position by four groups of directive wheels (3), when drilling rod (14) carry out rotary work, 4 are led
Guide clamping is carried out to drilling rod (14) to wheel (3), while guide clamping frictional force is become into rolling friction dynamics, when reducing guiding
Abrasion dynamics of the directive wheel (3) to drilling rod (14)；
Personnel can drive its piston rod to extend or shrink by controlling oil cylinder (5), to two directive wheels on support plate (1)
(3) angle is adjusted, to guarantee the good guidance performance to different size drilling rod (14)；
Embodiment 2:
The difference of the present embodiment and embodiment 1 are as follows: be equipped with hollow out position (15) on the support plate (1)；In use, reducing support
The own wt of plate (1), facilitating reduces production cost while movement；
Embodiment 3:
The difference of the present embodiment and embodiment 1 are as follows: be roller brush (17), the outside of the roller brush (17) in the middle part of the directive wheel (3)
Bristle is equipped on periphery；In use, suitably being cleared up while being oriented to drilling rod (14) drilling rod (14) outer surface.
The width of the hollow out position (15) is greater than 3/4ths design of support plate (1) width, can be as far as possible
The weight for reducing device, makes to move more convenient；
One end lateral surface of the lead screw (10) is the design of shiny surface, is turned in connector sleeve (9) convenient for the one end of lead screw (10)
It is dynamic；
It is equipped with the design of limited block on the other end of the sliding rail (4), connector sleeve (9) is limited, avoids from sliding rail (4)
It is detached from；
The bottom of the connector sleeve (9) is equipped with the design of universal caster wheel (11), and convenient for elapsing to device, use is more square
Just；
The surface of the directive wheel (3) is equipped with the design of non-slip mat, can be anti-skidding to carrying out between directive wheel (3) and drilling rod (14),
Guarantee the guide effect to drilling rod (14)；
There are two being nested on the fixing axle (12) stop collar (13), and one of them is located at two of fixing axle (12) top admittedly
Below fixed pole (2), another is located at the design above two fixed links (2) of fixing axle (12) bottom end, can be to fixing axle
(12) fixed link (2) of top and bottom end is limited, and the forced-slip on fixing axle (12) is avoided to deform；
The width of the fixed ear (19) and support plate (1) connecting side is greater than the design of the other side, increases fixed ear (19) and props up
The connection area of fagging (1) improves bonding strength；
The sliding rail (4) is circular rod-shaped configuration, and the surface of the sliding rail (4) is equipped with the design of one layer of smooth abrasion-proof layer, can
The frictional force between sliding rail (4) and connector sleeve (9) is further decreased, move connector sleeve (9) can smoothly along sliding rail (4)
It is dynamic；
The support plate (1) is set on the face of directive wheel (3) there are two reinforcement block, and is located at below support plate (1)
Two corner locations on support plate (1) bottom edge are reinforced in the design of two corner locations, and then improve at connector sleeve (9)
Bonding strength, avoid fracture damage；
The directive wheel (3) cooperation fixed link (2) and oil cylinder (5), can be between two directive wheels (3) upper to support plate (1)
Angle is adjusted, to be applicable in different size of drilling rod (14)；
The lead screw (10) and connector sleeve (9) cooperation support plate (1), can be adjusted the distance between two support plates (1),
To be clamped positioning to drilling rod (14), to be oriented to when drilling rod (14) work, swing when drilling rod (14) drilling is reduced
Amount；
It rotates rolled round (8), connector sleeve (9) is moved along lead screw (10), can be carried out to the distance between two support plates (1)
It adjusts, to adapt to different size of drilling rod (14)；
It rotates rolled round (8), single support plate (1) is moved, and position adjusting need to be only carried out to single support plate (1) can be realized
Clamping to drilling rod (14) is adjusted easy to use；
Reaching can be applicable in different size of drilling rod (14), and can carry out being oriented to oscillating quantity when having reduced drilling to drilling rod (14)
Purpose.
Above-described embodiment is presently preferred embodiments of the present invention, is not intended to limit the invention the range of implementation.Any ability
The those of ordinary skill in domain is not departing from invention scope of the invention, improves when can make a little, i.e., all according to the present invention
The same improvement done, should be the scope of the present invention and is covered.
Claims (10)
1. a kind of drill rod-guiding device, it is characterized in that: by support plate, fixed link, directive wheel, sliding rail, oil cylinder, engaging lug, positioning
Nail, rolled round, connector sleeve, lead screw, universal caster wheel, fixing axle, stop collar, drilling rod, connecting shaft, positioning seat and fixed ear composition, two
A support plate is staggered relatively, and two support plates are parallel to each other, and the two sides bottom of the support plate is equipped with respectively
Connector sleeve, and connector sleeve in two support plates corresponds, one end of lead screw are rotatably placed in one a support plate one
In connector sleeve on side, the other end of the lead screw on another support plate side in corresponding connector sleeve from passing through, institute
One end lateral surface for stating lead screw is shiny surface, and the connector sleeve on the lead screw and another support plate is connected through a screw thread, described
Rolled round is equipped on the other end of lead screw, the fixation of sliding rail one end is placed in one in the connector sleeve on an another side of support plate, institute
The other end of sliding rail is stated from can be slid through in corresponding connector sleeve on another support plate side, the other end of the sliding rail
On be equipped with limited block, the bottom of the connector sleeve is equipped with universal caster wheel, in the middle part of the top margin of the support plate and in the middle part of bottom edge respectively
It is equipped with fixed ear, the fixed ear is located between two support plates, and be respectively placed in support plate two of the both ends of fixing axle are solid
Determine on ear, two fixed link one end are rotatably placed in fixing axle respectively, and close to fixing axle top, other two is fixed
Bar one end is rotatably placed in fixing axle respectively, and close to fixing axle bottom end, the top of two connecting shafts is respectively and fixed
Two fixed link other ends on axis top are connected, and the top of two connecting shafts is another with two fixed links of fixing axle bottom end respectively
One end is connected, and is equipped with rotatable directive wheel in the connecting shaft, the fixing end of four oil cylinders pass through respectively articulated shaft and
The engaging lug group of four Angle Positions of support plate is hinged, the telescopic end of four oil cylinders respectively with four in adjacent fixing axle
Fixed link is hinged, and the surface of the directive wheel is equipped with non-slip mat, and the support plate is equipped with positioning seat on the face of directive wheel,
The positioning seat is located at support plate bottom edge middle position, and locating pin is placed on positioning seat.
2. a kind of drill rod-guiding device according to claim 1, it is characterised in that be equipped with hollow out position in the support plate.
3. a kind of drill rod-guiding device according to claim 1, it is characterised in that it is roller brush in the middle part of the directive wheel, it is described
It is equipped with bristle on the outer circumference face of roller brush, in use, suitably being cleared up while being oriented to drilling rod drilling rod outer surface.
4. a kind of drill rod-guiding device according to claim 1, it is characterised in that the support plate has the face of fixed ear
Four Angle Positions be equipped with one group of engaging lug respectively, engaging lug described in one group is made of two engaging lugs.
5. a kind of drill rod-guiding device according to claim 1, it is characterised in that limit there are two being nested in the fixing axle
Position ring, and one of them is located at below two fixed links on fixing axle top, another is located at two fixations of fixing axle bottom end
Design above bar can limit the fixed link on fixing axle top and bottom end, and the forced-slip in fixing axle is avoided to become
Shape.
6. a kind of drill rod-guiding device according to claim 1, it is characterised in that the fixed ear and support plate connecting side
Width be greater than the other side, the fixed ear and support plate are integrally formed.
7. a kind of drill rod-guiding device according to claim 1, it is characterised in that the support plate is rectangular plate-like structure.
8. a kind of drill rod-guiding device according to claim 1, it is characterised in that the sliding rail is circular rod-shaped configuration, institute
The surface for stating sliding rail is equipped with one layer of smooth abrasion-proof layer.
9. a kind of drill rod-guiding device according to claim 7, it is characterised in that the support plate is backwards to the face of directive wheel
On set there are two reinforcement block, and be located at two corner locations below support plate.
10. a kind of drill rod-guiding device according to claim 1, it is characterised in that its piston can be driven by controlling oil cylinder
Bar elongation is shunk, and is adjusted with the angle to two directive wheels in support plate, to guarantee to different size drilling rod
Good guidance performance.
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 |
|---|---|
| CN110469264A true CN110469264A (en) | 2019-11-19 |
| CN110469264B CN110469264B (en) | 2021-09-24 |
Family
ID=68515501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910855464.3A Active CN110469264B (en) | 2019-09-11 | 2019-09-11 | Drill rod guiding device |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
|---|---|
| CN110469264B (en) | 2021-09-24 |
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