CN111997588B - Rock mass drilling camera probe device placed in middle - Google Patents
Rock mass drilling camera probe device placed in middle Download PDFInfo
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- CN111997588B CN111997588B CN202010915843.XA CN202010915843A CN111997588B CN 111997588 B CN111997588 B CN 111997588B CN 202010915843 A CN202010915843 A CN 202010915843A CN 111997588 B CN111997588 B CN 111997588B
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- centering
- unit
- supporting leg
- roller
- probe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
Abstract
The invention discloses a centering device of a rock mass drilling camera probe, which comprises a guide head unit, a centering unit and an annular lens unit, wherein the centering unit comprises a centering unit shell and a supporting leg structure, a drilling camera host is arranged in the annular lens unit, a plurality of longitudinal grooves are uniformly arranged on the circumferential direction of the side wall of the centering unit shell, and a corresponding supporting leg structure is arranged at each longitudinal groove. The supporting leg structure comprises a passive supporting leg, a roller, an active supporting leg, a transmission column and a bidirectional telescopic action cylinder. The forward or backward power can be provided by the roller, so that the obstacle crossing capability of the probe when the probe crosses obstacles such as stone slag in the hole is improved; the active retraction by the leg structure allows passage through a section of the bore in the bore where the bore diameter is narrowed by the shrinkage.
Description
Technical Field
The invention belongs to the technical field of drilling imaging, and particularly relates to a centering device for a rock mass drilling camera shooting probe, which is suitable for rock mass drilling camera shooting.
Background
The drilling shooting technology is widely applied to the fields of engineering geology, geotechnical engineering and the like at present, and particularly comprises the steps of extending a torpedo-shaped probe with an annular lens on the side wall into a drill hole through a probe rod, shooting continuous hole wall pictures or videos through the process of entering and exiting the bottom of the drill hole, and obtaining a drill hole wall expansion diagram through processing by a special software technology.
The annular lens on the side wall of the torpedo type probe is internally provided with a light source and a conical lens, after the light source irradiates the hole wall, a camera acquires hole wall video information through the conical lens, and the acquired information is a sight line area with a certain width and 360-degree direction on the hole wall.
Although widely used, the conventional torpedo type probe also has the following problems in practical application:
1. the probe has a strict requirement for matching the aperture, and particularly for horizontal or inclined drilling, such as 75mm diameter drilling, a 50mm diameter probe needs to be strictly matched. The reason for this is that in a borehole, especially a horizontal or inclined borehole, due to gravity, the probe cannot be located in the middle of the borehole, so that the panoramic image acquired by the conical mirror will have a certain distortion and deformation, which may affect the image authenticity and the structural plane attitude calculation accuracy (centering function).
2. In horizontal or inclined drilling, due to gravity, the probe is directly attached to the hole wall, and rubs against the rough hole wall in the process of entering and exiting the bottom of the hole, so that the probe, particularly a glass sheet of an annular lens, can be scratched, and although hard glass can be adopted to relieve abrasion, the service life and the imaging quality (centering function) of the lens can be greatly influenced.
3. In horizontal or inclined drilling of a broken rock body, hole wall collapse often occurs, and collapsed gravels can be accumulated in front of a probe, so that the probe moving along the hole wall cannot move forward continuously, and the acquisition of a hole wall view of a whole hole is hindered (obstacle crossing function).
4. In a worse borehole, the borehole wall may collapse behind the probe, and collapsed debris may accumulate behind the probe, preventing the probe from being removed, possibly resulting in a loss of the probe (a trap-free function).
5. In the drilling of soft rock, the problem of shrinkage is often faced, namely in some hole sections, the diameter of the drilling hole is obviously reduced due to the extrusion of rock mass, and a probe needs to be capable of smoothly passing through the shrinkage hole section of the rock mass (adaptive aperture change function).
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a centering device for a rock mass drilling camera probe, and solves the problems of centering, obstacle crossing, difficulty getting rid of, adaptation to shrinkage cavity and the like while the traditional centering/fixing device for the drilling camera probe cannot better solve.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a rock mass drilling camera probe centering device comprises a guide head unit, a centering unit and an annular lens unit,
the centering unit comprises a centering unit housing and a leg structure,
a drilling camera host is arranged in the annular lens unit,
the lateral wall circumference of unit casing between two parties evenly is provided with a plurality of vertical slots, and every vertical slot department is provided with corresponding landing leg structure.
The supporting leg structure comprises a passive supporting leg, a roller, an active supporting leg, a transmission column and a bidirectional telescopic action cylinder,
passive landing leg one end is articulated with vertical slot one end inner wall, and the passive landing leg other end and initiative landing leg one end all articulate with the bearing housing of the rotation axis of gyro wheel, and the initiative landing leg other end passes through the bolt and articulates with transmission post one end, and the transmission post other end is connected with the telescopic link of a two-way flexible action section of thick bamboo, and the fixed part of a two-way flexible action section of thick bamboo is fixed in the unit casing of living in.
The telescopic direction and the longitudinal groove extending direction of the telescopic rod of the bidirectional telescopic action cylinder are parallel to the central axis of the central unit shell.
The side of the longitudinal groove close to one end of the driving support leg is provided with a first limiting sliding groove, the extending direction of the first limiting sliding groove is parallel to the central axis of the central unit shell, the transmission column is provided with a limiting snap-catch, the end part of the limiting snap-catch is embedded into the first limiting sliding groove,
the spacing spout of second has been seted up to the inner wall of unit casing placed in the middle, and the extending direction of the spacing spout of second is parallel with the central axis of unit casing placed in the middle, and the telescopic link is connected with spacing one end, and during the spacing spout of second was embedded into to the spacing other end.
The groove side of one end of the longitudinal groove close to the driven supporting leg is provided with a limiting table, and the limiting table is positioned on the inner side of the driven supporting leg.
The roller as described above is a motor roller.
The control line of the roller, the control line of the lens and the control line of the bidirectional telescopic action cylinder are connected with the out-of-hole control and signal acquisition unit.
The two centering units are arranged, the annular lens unit is arranged between the two centering units, the outer end of one centering unit is connected with the guide head unit, and the outer end of the other centering unit is connected with the push rod.
Compared with the prior art, the invention has the following remarkable advantages:
1. the invention can keep the centered state in the hole by actively extending the supporting leg structure to support the hole wall, thereby improving the imaging quality and reducing the abrasion of the lens.
2. The invention can increase the obstacle crossing capability when crossing obstacles such as stone slag in the hole by actively controlling the extension and retraction of the supporting leg structure and providing advancing power for the roller;
3. the invention can actively retract through the supporting leg structure, and can pass through a section with narrowed aperture caused by shrinkage in the hole;
4. when the invention encounters the problem of rear hole collapse, the support legs can be normally tried to be retracted, and the power of the roller is switched to a backward mode to try to get rid of the trouble.
5. The method has important significance for convenient, efficient and economic camera shooting work in the drilled hole under the complex geological condition.
Drawings
FIG. 1 is a schematic isometric view of the structure of the present invention (with the leg structure extended);
FIG. 2 is a schematic isometric view of the structure of the present invention (with the leg structure retracted);
FIG. 3 is a cut-away schematic view of the centering unit;
FIG. 4 is a structural schematic isometric view of a leg structure;
fig. 5 is a schematic perspective view of a centering unit housing in structural cutaway.
Wherein, 1-a guide head unit; 2-a centering unit; 3-an annular lens unit; 4-a push rod; 5-an extraporous control and signal acquisition unit; 21-a centering unit housing; 22-leg construction; 221-passive legs; 222-a roller; 223-active leg; 224-a telescopic rod; 225-bidirectional telescopic action cylinder; 226-longitudinal grooves; 227-a drive column; 228-a stopper bar; 229-a limit station; 2211-bolt; 2242-limiting the snap bamboo; 2111-a first limiting chute; 2112-second limit runner.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the invention by those of ordinary skill in the art, and it is to be understood that the present invention has been described in the illustrative embodiments and is not to be construed as limited thereto.
As shown in fig. 1, the centering device of the rock mass drilling camera probe comprises a guide head unit 1, a centering unit 2 and an annular lens unit 3, wherein the centering unit 2 comprises a centering unit shell 21 and a supporting leg structure 22, a drilling camera host is arranged in the annular lens unit 3, a plurality of longitudinal grooves 226 are uniformly arranged on the circumferential direction of the side wall of the centering unit shell 21, and a corresponding supporting leg structure 22 is arranged at each longitudinal groove 226.
In this embodiment, the number of the centering units 2 is two, and the annular lens unit 3 is disposed between the two centering units 2, wherein the outer end of one centering unit 2 is connected to the guide head unit 1, and the outer end of the other centering unit 2 is connected to the push rod 4.
As shown in fig. 2, 3 and 4, the leg structure 22 includes a passive leg 221, a roller 222, an active leg 223, a transmission column 227 and a bidirectional telescopic cylinder 225, wherein one end of the passive leg 221 is hinged to an inner wall of one end of the longitudinal groove 226, the other end of the passive leg 221 and one end of the active leg 223 are both hinged to a bearing sleeve of a rotation shaft of the roller 222, the other end of the active leg 223 is hinged to one end of the transmission column 227 through a bolt 2211, the other end of the transmission column 227 is connected to a telescopic rod 224 of the bidirectional telescopic cylinder 225, and a fixing portion of the bidirectional telescopic cylinder 225 is fixed in the centering unit housing 21. The expansion/contraction direction of the expansion link 224 of the bidirectional expansion/contraction cylinder 225 and the extending direction of the longitudinal groove 226 are both parallel to the central axis of the center unit housing 21.
When the telescopic rod 224 of the bidirectional telescopic action cylinder 225 performs telescopic motion, the transmission column 227 is driven to move synchronously, and then one end of the driving support leg 223 is driven to move linearly, and because one end of the driven support leg 221 is hinged with the inner wall of one end of the longitudinal groove 226, the other end of the driven support leg 221 is hinged with the end part of the driving support leg 223, the hinged part (namely the position of the roller 222) of the driven support leg 221 and the driving support leg 223 is driven to arch towards the outside of the centering unit shell 21 or retract towards the longitudinal groove 226.
A first limiting sliding groove 2111 is arranged at the groove side of one end of the longitudinal groove 226 close to the driving supporting leg 223, the extending direction of the first limiting sliding groove 2111 is parallel to the central axis of the centering unit shell 21, a limiting snap 2242 is arranged on the transmission column 227, the end part of the limiting snap 2242 is embedded into the first limiting sliding groove 2111,
the second spacing spout 2112 has been seted up to the inner wall of unit casing 21 between two parties, and the extending direction of second spacing spout 2112 is parallel with the central axis of unit casing 21 between two parties, and telescopic link 224 is connected with spacing 228 one end, and the spacing 228 other end is embedded into in the spacing spout 2112 of second.
The side of the longitudinal groove 226 near one end of the passive leg 221 is provided with a stop 229, and the stop 229 is located inside the passive leg 221.
The first limiting sliding groove 2111 and the limiting snap 2242 are matched, so that the transmission column 227 can reciprocate along the direction of the first limiting sliding groove 2111 to limit and fix.
The limit bar 228 is matched with the second limit sliding groove 2112, so that when the telescopic rod 224 performs telescopic motion, the telescopic rod performs telescopic motion along the extending direction of the second limit sliding groove 2112 all the time, and is limited and fixed.
The stop 229 serves to prevent the passive leg 221 and the active leg 223 from bending inward into the centering unit housing 21.
Further, the roller 222 is a motor roller. The control line of the roller 222, the control line of the lens and the control line of the bidirectional telescopic action cylinder 225 pass through the push rod 4 and are connected with the outside-hole control and signal acquisition unit 5. The control and signal acquisition unit 5 outside the hole provides power and control signals to the roller 222, the lens and the bidirectional telescopic motion cylinder 225, and is also used for receiving video signals of the lens.
The guide head unit 1 is made of a solid, light, smooth and wear-resistant material, such as engineering plastics, and has a hollow or solid structure, so that the guide head unit can guide the probe to advance in a drill hole.
The number of the longitudinal slots 226 uniformly arranged in the circumferential direction on the side wall of the centering unit housing 21 is at least 3, in this embodiment 4, and a corresponding leg structure 22 is arranged at each longitudinal slot 226.
The annular lens unit 3 is composed of a drilling camera host with a conical mirror inside and is the same as common drilling camera equipment.
The use of the invention comprises the following steps:
and 3, starting the work of the annular lens unit 3 at the moment, and obtaining a good shooting effect due to the centering.
And 4, when obstacles such as stone slag and the like need to be crossed in the hole, the bidirectional telescopic action cylinder 225 is decompressed, so that the driving support leg 223 and the driven support leg 221 at the corresponding positions of the obstacles can retract to cross the obstacles, the roller 22 actively rolls forwards, the obstacle crossing power is increased, and meanwhile, the diameter of the roller 22 is larger, so that the rock mass drilling camera probe centering device has stronger capability of crossing the obstacles in the hole.
And 5, when a hole with a smaller hole diameter needs to pass through the hole in the hole, all the bidirectional telescopic action cylinders 225 stretch out, and the driving support legs 223 and the driven support legs 221 retract, so that the diameter occupied by the rock drilling camera probe centering device is reduced, the rock drilling camera probe centering device can smoothly pass through the hole shrinkage section, meanwhile, the roller 22 actively rolls forwards, the forward power is increased, and the friction with the hole wall is reduced.
Step 6, in the process of completing the drilling process of entering and needing to go out of the drilling, when a hole collapsing section at the rear of the rock mass drilling camera probe centering device is encountered, the bidirectional telescopic action cylinder 225 is decompressed, so that the driving support leg 223 and the driven support leg 221 corresponding to the position of the obstacle can be retracted to climb over the obstacle; if the device is not trapped, the telescopic rod 224 of the bidirectional telescopic action cylinder 225 extends, the driving support leg 223 and the driven support leg 221 retract, so that the diameter of the rock mass drilling and camera shooting probe centering device is minimized, the roller 22 is started to roll backwards, and the trapping process of the rock mass drilling and camera shooting probe centering device is completed.
And 7, completing the drilling video test.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (3)
1. A rock mass drilling camera probe centering device comprises a guide head unit (1), and is characterized by further comprising a centering unit (2) and an annular lens unit (3),
the centering unit (2) comprises a centering unit housing (21) and a leg structure (22),
a drilling camera host is arranged in the annular lens unit (3),
a plurality of longitudinal grooves (226) are uniformly arranged on the circumferential direction of the side wall of the centering unit shell (21), a corresponding supporting leg structure (22) is arranged at each longitudinal groove (226),
the supporting leg structure (22) comprises a passive supporting leg (221), a roller (222), an active supporting leg (223), a transmission column (227) and a bidirectional telescopic action cylinder (225),
one end of a passive supporting leg (221) is hinged with the inner wall of one end of a longitudinal groove (226), the other end of the passive supporting leg (221) and one end of an active supporting leg (223) are both hinged with a bearing sleeve of a rotating shaft of a roller (222), the other end of the active supporting leg (223) is hinged with one end of a transmission column (227) through a bolt (2211), the other end of the transmission column (227) is connected with a telescopic rod (224) of a bidirectional telescopic action cylinder (225), a fixed part of the bidirectional telescopic action cylinder (225) is fixed in a central unit shell (21),
the extension direction of an extension rod (224) of the bidirectional extension action cylinder (225) and the extension direction of a longitudinal groove (226) are both parallel to the central axis of the central unit shell (21),
a first limiting sliding groove (2111) is arranged on the groove side of one end, close to the driving support leg (223), of the longitudinal groove (226), the extending direction of the first limiting sliding groove (2111) is parallel to the central axis of the centering unit shell (21), a limiting snap (2242) is arranged on the transmission column (227), the end part of the limiting snap (2242) is embedded into the first limiting sliding groove (2111),
a second limiting sliding groove (2112) is formed in the inner wall of the centering unit shell (21), the extending direction of the second limiting sliding groove (2112) is parallel to the central axis of the centering unit shell (21), the telescopic rod (224) is connected with one end of the limiting strip (228), the other end of the limiting strip (228) is embedded into the second limiting sliding groove (2112),
the groove side of one end of the longitudinal groove (226) close to the passive leg (221) is provided with a limit table (229), the limit table (229) is positioned at the inner side of the passive leg (221),
the roller (222) is a motor roller.
2. The rock mass drilling and camera shooting probe centering device as claimed in claim 1, wherein the control line of the roller (222), the control line of the lens, and the control line of the bidirectional telescopic action cylinder (225) are connected with an out-of-hole control and signal acquisition unit (5).
3. A rock mass borehole camera probe centering device according to claim 1, characterized in that the number of centering units (2) is two, the annular lens unit (3) is arranged between the two centering units (2), the outer end of one centering unit (2) is connected with the guide head unit (1), and the outer end of the other centering unit (2) is connected with the push rod (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010915843.XA CN111997588B (en) | 2020-09-03 | 2020-09-03 | Rock mass drilling camera probe device placed in middle |
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| CN202010915843.XA CN111997588B (en) | 2020-09-03 | 2020-09-03 | Rock mass drilling camera probe device placed in middle |
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| CN111997588A CN111997588A (en) | 2020-11-27 |
| CN111997588B true CN111997588B (en) | 2022-04-01 |
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| CN112727443A (en) * | 2021-01-07 | 2021-04-30 | 湖南奥成科技有限公司 | High-definition imaging device for large-aperture inclined shaft and vertical shaft |
| CN112901147B (en) * | 2021-01-18 | 2022-09-23 | 中国科学院武汉岩土力学研究所 | Method and device for determining drilling video test depth by using water pressure |
| CN113028919A (en) * | 2021-03-02 | 2021-06-25 | 神华准格尔能源有限责任公司 | Deep hole searchlight fishing device |
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