CN113107410B - Locking device for core taking pipe of salvaging drilling and application method thereof - Google Patents
Locking device for core taking pipe of salvaging drilling and application method thereof Download PDFInfo
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- CN113107410B CN113107410B CN202110401779.8A CN202110401779A CN113107410B CN 113107410 B CN113107410 B CN 113107410B CN 202110401779 A CN202110401779 A CN 202110401779A CN 113107410 B CN113107410 B CN 113107410B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005553 drilling Methods 0.000 title claims description 33
- 230000009471 action Effects 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 210000000078 claw Anatomy 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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- Marine Sciences & Fisheries (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a locking device for a core pipe of a salvaging drill, which comprises a female joint assembly, a central shaft, a male joint assembly and a fastening sleeve assembly, wherein the fastening sleeve assembly is fixedly connected with the male joint assembly, one end of the central shaft is positioned in the male joint assembly, the other end of the central shaft penetrates out of the male joint assembly and stretches into the female joint assembly, an automatic locking component for fixing the central shaft is arranged in the female joint assembly, a movable first sleeve is sleeved on the outer wall of the central shaft, an adjusting piece for adjusting the movement of the first sleeve is arranged on the male joint assembly, the outer diameter of the end face of the first sleeve, which is close to the female joint assembly, is larger than the inner diameter of the automatic locking component, and the automatic locking component is unfolded to complete unlocking action in the moving process. The invention also provides a use method of the locking device for the core taking pipe of the salvaging drill. The invention omits the on-site splicing action and can complete the automatic locking and automatic unlocking actions.
Description
Technical Field
The invention relates to the technical field of salvaging core tubes, in particular to a locking device for salvaging a drilling core tube and a use method thereof.
Background
The research of the submarine drilling sampling robot is developed, and the problem that great equipment is needed in marine resource exploration in China can be effectively solved. In a complex submarine environment, not only the storage, locking and unlocking, transfer, connection and disconnection, drilling and coring of the drilling pipe, but also a series of complex actions such as core taking pipe replacement, sample core cutting/salvaging/storage and the like are required to be completed. Chinese patent publication No. CN202100208U, publication date is 2012 1 month 14, this patent discloses a downhole operation tubular column connector, including the upper joint, the public joint, the female joint, sheath and fishing head, its characterized in that upper joint lower part inner periphery threaded connection hangs the nipple joint, upper joint lower part periphery spline connection public joint, upper joint middle part periphery threaded connection sheath, female joint is connected to male joint lower part periphery anti-buckling, female joint lower part inner periphery spline connection hangs the lower part of nipple joint, female joint lower part periphery threaded connection fishing head, although this patent can accomplish the connection of male joint and female joint, but connect and dismantle the operation all very complicated, can not accomplish public joint and female joint automatic locking and unblock in narrow drilling pipe, can't accomplish the work of taking out the core pipe in the drilling pipe.
Disclosure of Invention
The invention aims to overcome the defect that the existing salvaging device cannot complete automatic locking and unlocking operations in a narrow drilling pipe, and provides a locking device for salvaging a drilling core pipe. The invention omits the on-site splicing action and can complete the automatic locking and automatic unlocking actions.
The invention also provides a use method of the locking device for the core taking pipe of the salvaging drill.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a locking device of core pipe is got in salvaging drilling, includes female joint assembly, center pin, male joint assembly and fastening sleeve subassembly, fastening sleeve subassembly with male joint assembly fixed connection, center pin one end is located inside the male joint assembly, the other end of center pin wears out the male joint assembly and stretches into female joint assembly, female joint assembly is inside to be equipped with the automatic locking part that is used for fixed center pin, mobilizable first sleeve pipe is established to the outer wall cover of center pin, be equipped with the regulating part that adjusts first sleeve pipe and remove on the male joint assembly, first sleeve pipe is close to female joint assembly's terminal surface external diameter is greater than automatic locking part's internal diameter, struts in the removal process automatic locking part accomplishes the unblock action.
In this technical scheme, in the working process of salvaging the core pipe, female joint assembly's end connection core pipe of getting, female joint assembly and core pipe connection are located the drill pipe bottom, the staff is fixed the rope on the fastening sleeve device, will stretch into the drill pipe with its public joint assembly of bottom through the rope, the inside center pin of public joint assembly stretches into female joint assembly inside, the inside automatic locking part of female joint assembly locks the center pin, accomplish the connection of public joint assembly and female joint assembly, the staff salvages the core pipe of being connected with female joint assembly bottom to ground through the rope, only need stir the regulating part and can remove first sleeve pipe on the center tube, make its terminal surface top that is close to female joint assembly to automatic locking part, prop up automatic locking part, the automatic locking part of strutting no longer locks the center pin, the center pin can break away from female joint assembly.
Further, the female joint assembly comprises a circular sleeve, a first partition plate is arranged in the circular sleeve, the inner part of the circular sleeve is divided into a first cavity and a second cavity by the first partition plate, the automatic locking part is located in the first cavity, and connecting threads are arranged in the second cavity. In this technical scheme, the first cavity that the center pin got into female joint assembly cooperates rather than inside automatic locking part, and female joint assembly's second cavity and core taking pipe or other parts threaded connection that need be salvaged.
Further, the automatic locking component comprises a limit stop and a pair of clamping pieces, wherein the limit stop is located in the first cavity, the limit stop is in butt joint with the first partition board, one end of the clamping piece is in butt joint with the limit stop, the other end of the clamping piece is a free end, a pin shaft penetrating through the clamping piece is arranged on the outer wall of the circular sleeve, a strip-shaped groove convenient for the rotation displacement of the clamping piece is arranged on the outer wall of the circular sleeve, and a rubber elastic ring elastically fixing the clamping piece is further arranged on the outer wall of the strip-shaped groove on the circular sleeve. In this technical scheme, the holder rotates through the round pin axle and sets up in first cavity, and the holder is around pivot pivoted in-process, and its free end can wear out circular sleeve pipe or withdraw in first cavity in the bar groove, and when the center pin got into first cavity, the one end that the holder is close to limit stop carries out the joint to the center pin, and the free end withdrawal first cavity of holder presss from both sides tightly the first sleeve pipe of center pin.
Further, the clamping piece is rectangular shape, and the clamping piece is towards the one side of circular sleeve pipe axis, and the front end and the rear end of this face outwards bulge, and the centre is sunken, the rear end is equipped with the through-hole that is used for the round pin axle to pass, still is equipped with on the rear end outer wall and is used for installing rubber spring ring recess, rear end and limit stop butt, the center pin be close to the one end of female joint assembly be equipped with the protruding joint's of clamping piece rear end circular slot. In the technical scheme, a round groove on a central shaft is clamped with a bulge at the rear end of a clamping piece, and the tail end of a first sleeve on the central shaft is positioned in a middle concave part of the clamping piece; after the adjusting piece releases the first sleeve, the end face of the tail end of the first sleeve can jack into the rear end of the clamping piece, the clamping piece can expand outwards under the elastic fixation of the rubber elastic ring, the central shaft is discharged, and the unlocking action is completed.
Further, the male connector assembly comprises an outer sleeve and an inner sleeve, the inner sleeve is arranged in the outer sleeve and penetrates through two ends of the outer sleeve, the top end of the inner sleeve is fixedly connected with the fastening sleeve assembly, one end of the central shaft is fixed in the inner sleeve, and the other end of the central shaft extends out of the inner sleeve; the inner wall of outer tube is equipped with the screw thread, the one end that the interior sleeve pipe is close to the tight sleeve subassembly is equipped with the first screw rod that runs through radial interior sleeve pipe (202), the inner wall of outer tube is equipped with the annular groove that is convenient for first screw rod both ends stretch out the interior sleeve pipe and rotate, the one end that the outer tube is close to the tight sleeve subassembly is equipped with the screw that prevents first screw rod and break away from the outer tube. In this technical scheme, interior sleeve pipe can be rotatory in the outer tube, and the cooperation of screw and annular groove can avoid first screw rod to unscrew the outer tube.
Further, be equipped with the second screw rod on the interior sleeve pipe, the second screw rod radially runs through the center pin and fixes it in interior sleeve pipe, interior sleeve pipe outer wall is worn out at the both ends of second screw rod with the inner wall threaded connection of outer tube, the cover is established the spring on the outer wall of center pin, the one end butt second screw rod of spring, the other end butt first sleeve pipe of spring, be equipped with guide bolt on the outer wall of first sleeve pipe, the regulating part is including being located restriction on interior sleeve pipe and the outer tube guide slot that guide bolt removed. In the technical scheme, when the central shaft is required to be locked with a clamping piece in the female joint assembly, the first sleeve moves upwards to compress the spring, the tail end of the first sleeve does not contact the rear end of the clamping piece, and the guide groove limits the position of the guide bolt at the moment so as to limit the current position of the first sleeve on the central shaft; when the clamping piece in the central shaft and the female joint assembly is unlocked, the outer sleeve is only required to be rotated, the limiting position of the guide bolt in the guide groove is changed, the first sleeve moves downwards, the end face of the tail end of the first sleeve props into the rear end of the clamping piece, the clamping piece expands outwards to release the central shaft, and the unlocking action is completed.
Further, the guide groove comprises a toothed guide groove positioned on the inner sleeve wall surface, one end of the toothed guide groove is provided with a first extension groove extending towards the female joint assembly, the guide groove further comprises an arc guide groove matched with the toothed guide groove and positioned on the outer sleeve wall surface, and one end of the arc guide groove is provided with a second extension groove extending towards the female joint assembly. In the technical scheme, the guide bolt on the first sleeve is subjected to double position limitation by the toothed guide groove and the first extension groove of the inner sleeve and the arc guide groove and the second extension groove of the outer sleeve; the guide bolt can enter the first elongated slot of the inner sleeve and the second elongated slot of the outer sleeve by rotating the outer sleeve on the ground, the first sleeve moves downwards, the end face of the tail end of the first sleeve pushes the clamping piece, and the unlocking action is completed; the unlocking action of the male connector assembly and the female connector assembly can be finished underground, the principle of finishing the unlocking action underground is similar to that of a pressing pen, when the female connector assembly and a device connected with the bottom of the female connector assembly reach a low contact position underground, the female connector assembly can generate upward rebound force to drive the first sleeve to shake upwards, the repeated shake enables the guide bolt on the outer wall of the first sleeve to enter the first extension groove of the inner sleeve and the second extension groove of the outer sleeve from the toothed guide groove, the first sleeve moves downwards, and the end face of the tail end of the first sleeve pushes against the clamping piece to finish the unlocking action.
Further, the outer wall of the first sleeve is also provided with a lug matched with the protrusion at the front end of the clamping piece, and both ends of the lug are provided with chamfers. After the protruding block is extruded into the clamping piece along with the first sleeve, the clamping piece can be propped open by matching with the tail end of the first sleeve, and the unlocking operation of the central shaft is completed.
Further, the fastening sleeve assembly comprises a fastening sleeve, one end of the inner sleeve stretches into the fastening sleeve, a separation safety pin which radially penetrates through and fixes the fastening sleeve and the inner sleeve is arranged on the fastening sleeve, and a rope fastening bolt is further arranged on the outer wall of the fastening sleeve. In the salvaging process, if the female joint component and the male joint component are blocked in a narrow drilling pipe, only the pulling force is needed to be increased, so that the pulling force exceeds the maximum load of the separation safety pin, the separation safety pin can be automatically broken, and then the blocked female joint component and male joint component are released.
The application method of the locking device for the core taking pipe of the salvaging drill comprises the following specific steps:
S1, one end of a female joint component is connected with a coring pipe in a drilling pipe, a clamping piece is in a claw shape and is opened, the front end of the clamping piece stretches out of a strip-shaped groove and is abutted against the inner wall of the drilling pipe, a worker fixes a rope on a fastening sleeve on the ground through a rope fastening bolt, a first sleeve in the male joint component moves a compression spring upwards, a guide bolt of the outer wall of the compression spring is clamped in a first extension groove of an inner sleeve, and then is clamped in an arc-shaped guide groove of an outer sleeve;
S2, extending the male joint assembly connected with the fastening sleeve into the drilling pipe through the rope, extending the tail end of the central shaft into the female joint assembly, contacting with the bulge at the rear end of the clamping piece, enabling the rear end of the clamping piece to rotate outwards around the pin shaft and expand, enabling the front end of the clamping piece to shrink inwards around the pin shaft, enabling the bulge at the rear end of the clamping piece to be in fit connection with the circular groove of the central shaft along with the further extension of the central shaft, forming self-locking, and enabling a worker to pull the rope on the ground to take out the female joint assembly locked with the male joint assembly and the coring pipe connected below the female joint assembly from the drilling pipe;
S3, after the female joint assembly is taken out, a worker needs to rotate the outer sleeve, the second extension groove of the outer sleeve is overlapped with the first extension groove of the inner sleeve, the guide bolt is not clamped by the arc guide groove any more and falls into the tail end of the overlapping first extension groove and the second extension groove, the spring is released, the first sleeve moves downwards, the end face of the tail end of the first sleeve pushes against the rear end of the clamping piece, the clamping piece and the rubber elastic ring sleeved on the rear end of the clamping piece are spread, the central shaft is released, and the male joint assembly and the female joint assembly are unlocked and separated from each other.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the male connector assembly and the female connector assembly can be automatically locked through the central shaft and the clamping piece, the male connector assembly and the female connector assembly cannot be accidentally released in the salvaging process, and the locking can be released only by rotating the outer sleeve, so that the operation is convenient. The toothed guide groove, the first sleeve and the spring are matched, so that the locked female joint component and the locked male joint component can be automatically unlocked under the ground. The split shear pin of the present invention provides a safer way to release a locking device that is stuck in a drill pipe. The invention has simple structure, thereby reducing maintenance, eliminating the need of on-site splicing in the connection mode between the male joint component and the female joint component, and having the advantages of high efficiency, low cost and convenient operation.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the present invention.
FIG. 3 is an enlarged schematic view of FIG. 1 at A
Fig. 4 is a schematic structural view of an outer sleeve according to the present invention.
Fig. 5 is an exploded view of the male connector assembly and the fastening sleeve assembly of the present invention.
Fig. 6 is an exploded view of the female connector assembly of the present invention.
Fig. 7 is a schematic diagram of the unlocking process of embodiment 2.
Fig. 8 is a schematic diagram of the unlocking process of embodiment 3.
The graphic indicia are illustrated as follows:
1. A fastening sleeve assembly; 101. a fastening sleeve; 102. separating the safety pin; 103. a rope fastening bolt; 2. a male connector assembly; 201. an outer sleeve; 202. an inner sleeve; 203. a second elongated slot; 204. a first screw; 205. a second screw; 206. a spring; 207. a guide bolt; 208. a bump; 209. a circular groove; 210. toothed guide grooves; 211. a first elongate slot; 212. an annular groove; 213. an arc-shaped guide groove; 3. a female connector assembly; 301. a circular sleeve; 302. a clamping member; 303. a rubber elastic ring; 304. a limit stop; 305. a first cavity; 306. a second cavity; 307. a bar-shaped groove; 308. a fixed pin shaft; 309. limiting pin shafts; 4. a central shaft; 5. a first sleeve.
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Example 1
Fig. 1 to 7 show an embodiment of a locking device for a core barrel of a fishing drill according to the present invention. The utility model provides a locking device of core pipe is got in salvaging drilling, wherein include female joint assembly 3, center pin 4, public joint assembly 2 and fastening sleeve subassembly 1, fastening sleeve subassembly 1 and public joint assembly 2 fixed connection, center pin 4 one end is fixed to be set up inside public joint assembly 2, the other end of center pin 4 wears out public joint assembly 2 and stretches into female joint assembly 3, female joint assembly 3 inside is equipped with the automatic locking part that is used for fixed center pin 4, mobilizable first sleeve pipe 5 is established to the outer wall cover of center pin 4, be equipped with the regulating part of adjusting the 5 mobile position of first sleeve pipe on the public joint assembly 2, the terminal surface external diameter that first sleeve pipe 5 is close to female joint assembly 3 is greater than automatic locking part's internal diameter, can strut automatic locking part when the terminal surface down of first sleeve pipe 5 moves like this, automatic locking part no longer carries out the chucking to center pin 4, accomplish the unblock action.
As shown in fig. 2 and 6, the female connector assembly 3 takes a circular sleeve 301 as a main body, a first partition board is arranged in the circular sleeve 301, the first partition board divides the inner part of the circular sleeve 301 into a first cavity 305 and a second cavity 306, an automatic locking component is positioned in the first cavity 305, threads are arranged in the second cavity 306, and the threads in the second cavity 306 are convenient for the threaded connection between the embodiment and other objects to be salvaged; the automatic locking component is located in the first cavity 305, the automatic locking component comprises a limit stop 304 abutted against the first partition plate, the automatic locking component further comprises a pair of clamping pieces 302, the clamping pieces 302 are in a strip shape, one surface of each clamping piece 302 facing the axis of the circular sleeve 301 is provided with a front end and a rear end protruding outwards, the middle is recessed inwards, the rear end is abutted against the limit stop 304, a fixed pin 308 penetrating through the clamping pieces 302 is arranged on the outer wall of the circular sleeve 301, the clamping pieces 302 rotate on the circular sleeve 301 around the fixed pin 308, a strip-shaped groove 307 facilitating the rotation displacement of the clamping pieces 302 is arranged on the outer wall of the circular sleeve 301, a rubber elastic ring 303 elastically fixing the clamping pieces 302 is further arranged on the outer wall of the rear section of the circular sleeve 301, a limit pin 309 is further arranged on the rear section of the clamping piece 302, two ends of the limit pin 309 are abutted against the strip-shaped groove 307, excessive rotation of the clamping pieces 302 is avoided, the clamping pieces 302 can penetrate out of the circular sleeve 301 or retract into the first cavity 305 in the process of rotating around the fixed pin 308, when the mandrel 4 enters the first cavity 305, the central shaft 4 is clamped by the clamping pieces 302, the front end of the central shaft 302 is clamped by the clamping pieces 4, the first end of the first cavity 302 is clamped by the clamping pieces 302, the first end 5 is clamped by the elastic ring 5, and the first end of the first cavity 5 is released, and the first end of the clamping pieces are clamped by the elastic ring 5.
In this embodiment, the protruding section at the front end of the clamping member 302 occupies one tenth of the total length of the clamping block, the middle recessed section occupies three tenths of the total length, the protruding section at the rear end of the clamping member 302 occupies six tenths of the total length, and the central shaft 4 is provided with a circular groove 209 that is clamped with the protrusion at the rear end of the clamping member 302 at one end near the female connector assembly 3.
In this embodiment, as shown in fig. 2, the male connector assembly 2 includes an outer sleeve 201 and an inner sleeve 202, the inner sleeve 202 is disposed in the outer sleeve 201 and penetrates through both ends thereof, one end of the inner sleeve 202 is fixedly connected with the fastening sleeve assembly 1, one end of the central shaft 4 is fixed inside the inner sleeve 202, and the other end extends out of the inner sleeve 202 to be connected with a clamping piece 302 of the female connector assembly 3; the inner wall of the outer sleeve 201 is provided with threads, one end of the inner sleeve 202, which is close to the fastening sleeve assembly 1, is provided with a first screw 204 penetrating through the inner sleeve 202, and two ends of the first screw 204 extend into an annular groove 212 on the inner wall of the outer sleeve 201; the inner sleeve 202 is rotatable within the outer sleeve 201 and the annular groove 212 prevents the first screw 204 from unscrewing from the outer sleeve 201. As shown in fig. 4, one end of the inner wall of the outer sleeve has a notch, so a screw needs to be sleeved at the notch to prevent the first screw 204 from being separated from the outer sleeve 201 from the notch.
As shown in fig. 2, the inner sleeve 202 is provided with a second screw 205, the second screw 205 radially penetrates through the central shaft 4 to fix the second screw 205 in the inner sleeve 202, two ends of the second screw 205 penetrate out of the inner sleeve 202 and are flush with the outer wall of the inner sleeve 202, a spring 206 is sleeved on the outer wall of the central shaft 4, one end of the spring 206 is abutted against the second screw 205, the other end of the spring 206 is abutted against the first sleeve 5, the outer wall of the first sleeve 5 is provided with a guide bolt 207, and the adjusting piece comprises a guide groove which is positioned on the inner sleeve 202 and the outer sleeve 201 and limits the movement of the guide bolt 207.
As shown in fig. 3 and 4, the guide groove comprises a toothed guide groove 210 on the wall surface of the inner sleeve 202, one end of the toothed guide groove 210 is provided with a first extension groove 211 extending towards the female connector assembly 3, the guide groove further comprises an arc guide groove 213 on the wall surface of the outer sleeve 201 and matched with the toothed guide groove 210, and one end of the guide groove is provided with a second extension groove 203 extending towards the female connector assembly 3. The guide bolt 207 on the first sleeve 5 is subjected to double position limitation by the toothed guide groove 210 and the first elongated groove 211 of the inner sleeve 202 and the arc guide groove 213 and the second elongated groove 203 of the outer sleeve 201; as long as the guide bolt 207 is positioned at the tail end of the first elongated slot 211 and the second elongated slot 203, the first sleeve 5 moves downwards to prop the rear end of the clamping piece 302 open, so as to complete the unlocking action; when the guide bolt 207 is engaged by the arc-shaped guide groove 213 or the tooth-shaped guide groove 210, the tip of the first sleeve 5 does not enter the rear end of the holding member 302, and the holding member 302 is locked to the center shaft 4.
As shown in fig. 2 and 5, the fastening sleeve assembly 1 includes a fastening sleeve 101, one end of an inner sleeve 202 extends into the fastening sleeve 101, a separation safety pin 102 radially penetrating through the fastening sleeve 101 and the inner sleeve 202 is provided on the fastening sleeve 101, and a rope fastening bolt 103 is further provided on the outer wall of the fastening sleeve 101. When the female joint assembly 3 and the male joint assembly 2 are blocked in a narrow drilling pipe in the salvaging process, only the pulling force is needed to be increased, so that after the pulling force exceeds the maximum load of the separation safety pin 102, the separation safety pin 102 can be automatically broken, and then the female joint assembly 3 and the male joint assembly 2 blocked in the drilling pipe are released.
Example 2
An embodiment of a locking device for a salvaging drilling core pipe and a use method thereof. The application method of the locking device for the core taking pipe of the salvaging drill comprises the following specific steps:
S1, one end of a female joint assembly 3 is connected with a coring pipe in a drilling pipe, a clamping piece 302 is opened in a claw shape, the front end of the clamping piece 302 stretches out from a strip-shaped groove 307 to be abutted against the inner wall of the drilling pipe, a worker fixes a rope on the ground through a rope fastening bolt 103 on a fastening sleeve 101, a first sleeve 5 in the male joint assembly 2 moves a compression spring 206 upwards, a guide bolt 207 on the outer wall of the compression spring is clamped in a first extension groove 211 of an inner sleeve 202, and then is clamped in an arc-shaped guide groove 213 of an outer sleeve 201;
S2, the male joint assembly 2 connected with the fastening sleeve 101 is stretched into a drilling pipe through a rope, the tail end of the central shaft 4 is contacted with the rear end bulge of the clamping piece 302, the rear end of the clamping piece 302 rotates outwards around the fixed pin 308 to expand, the front end of the clamping piece 302 contracts inwards around the fixed pin 308, the rear end bulge of the clamping piece 302 is connected with the circular groove 209 of the central shaft 4 in a fit manner along with the further stretching of the central shaft 4 to form self-locking, and a worker pulls the rope on the ground to take out the female joint assembly 3 locked with the male joint assembly 2 and the coring pipe connected below the female joint assembly 3 from the drilling pipe;
S3, after the female joint assembly 3 is taken out, as shown in FIG. 7, only the outer sleeve 201 is required to be rotated, the second elongated slot 203 of the outer sleeve 201 is overlapped with the first elongated slot 211 of the inner sleeve 202, the guide bolt 207 is not clamped by the arc-shaped guide slot 213 any more, and can fall into the overlapped tail end of the first elongated slot 211 and the second elongated slot 203, so that the spring 206 can be released, the first sleeve 5 is moved downwards, the end face of the tail end of the first sleeve 5 can jack into the rear end of the clamping piece 302, the clamping piece 302 and the rubber elastic ring 303 sleeved at the rear end of the clamping piece are propped open, the central shaft 4 is released, and the male joint assembly 2 and the female joint assembly 3 are separated from each other.
Example 3
An embodiment of a locking device for a fishing core barrel is shown in fig. 8. The locking device for the core taking pipe of the salvaging drill finishes the replacement of the core taking pipe in a narrow drilling pipe, and specifically comprises the following steps:
S1, a guide bolt 207 on a first sleeve 5 moves into a tooth groove near the inner end along a tooth-shaped guide groove 210 of an inner sleeve 202, then the outer sleeve 201 is rotated to enable a second elongated groove 203 of the outer sleeve 201 to coincide with a first elongated groove 211 of the inner sleeve 202, a rope is fixed on the fastening sleeve assembly 1 on the ground, a central shaft 4 is inserted into a female joint assembly 3 to complete locking action, and a second cavity 306 of the female joint assembly 3 is connected with a coring pipe to be put into the ground;
S2, the coring pipe and the coring pipe connected with the coring pipe are lowered into the drilling pipe, when the coring pipe meets partial water-deficient stratum, the coring pipe is not lowered any more, the coring pipe and the female joint assembly 3 connected with the coring pipe generate upward rebound force, the first sleeve 5 abutted with the female joint assembly 3 also shakes upward, and the guide bolt 207 of the first sleeve 5 can rotate along the toothed guide groove 210;
S3, after the drilling pipe cannot descend, the female joint assembly 3 and the connecting core taking pipe are pulled up by a rope and then fall down, the first sleeve 5 abutted by the female joint assembly 3 is repeatedly shaken, so that the guide bolt 207 rotates to a position where the second long groove 203 of the outer sleeve 201 coincides with the first long groove 211 of the inner sleeve 202 along the toothed guide groove 210, the first sleeve 5 moves downwards along the overlapped first long groove 211 and second long groove 203 under the action of the elasticity of the spring 206, the tail end of the first sleeve is pushed into the rear end of the clamping piece 302, and the clamping piece 302 finishes unlocking the central shaft 4;
S4, a worker pulls the unlocking male joint assembly 2 and the fastening sleeve assembly 1 out of the drilling pipe on the ground through a rope.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. The utility model provides a locking device of core pipe is got in salvaging drilling which characterized in that: the novel locking device comprises a female connector assembly (3), a central shaft (4), a male connector assembly (2) and a fastening sleeve assembly (1), wherein the fastening sleeve assembly (1) is fixedly connected with the male connector assembly (2), one end of the central shaft (4) is positioned inside the male connector assembly (2), the other end of the central shaft (4) penetrates out of the male connector assembly (2) and stretches into the female connector assembly (3), an automatic locking component for fixing the central shaft (4) is arranged inside the female connector assembly (3), a movable first sleeve (5) is sleeved on the outer wall of the central shaft (4), an adjusting piece for adjusting the movement of the first sleeve (5) is arranged on the male connector assembly (2), the outer diameter of the end face of the first sleeve (5) close to the female connector assembly (3) is larger than the inner diameter of the automatic locking component, and the automatic locking component is propped open in the moving process to complete unlocking action;
The female joint assembly (3) comprises a circular sleeve (301), a first partition plate is arranged in the circular sleeve (301), the first partition plate divides the interior of the circular sleeve (301) into a first cavity (305) and a second cavity (306), the automatic locking component is positioned in the first cavity (305), and connecting threads are arranged in the second cavity (306);
The automatic locking component comprises a limit stop (304) and a pair of clamping pieces (302) which are positioned in a first cavity (305), wherein the limit stop (304) is abutted against the first partition board, one end of the clamping piece (302) is abutted against the limit stop (304), the other end of the clamping piece is a free end, a pin shaft penetrating through the clamping piece (302) is arranged on the outer wall of the circular sleeve (301), a strip-shaped groove (307) which is convenient for the rotation displacement of the clamping piece (302) is arranged on the outer wall of the circular sleeve (301), and a rubber elastic ring (303) which is elastically fixed to the clamping piece (302) is further arranged on the outer wall of the strip-shaped groove (307) on the circular sleeve (301);
The clamping piece (302) is in a strip shape, one surface of the clamping piece (302) facing the axis of the circular sleeve (301) is outwards convex, the front end and the rear end of the surface are outwards concave, the rear end is provided with a through hole for a pin shaft to pass through, the outer wall of the rear end is also provided with a groove for installing a rubber elastic ring (303), the rear end is abutted with the limit stop (304), and one end, close to the female joint assembly (3), of the central shaft (4) is provided with a circular groove (209) which is clamped with the bulge at the rear end of the clamping piece (302);
The male connector assembly (2) comprises an outer sleeve (201) and an inner sleeve (202), the fastening sleeve assembly (1) comprises a fastening sleeve (101), one end of the inner sleeve (202) stretches into the fastening sleeve (101), a separation safety pin (102) which radially penetrates through and fixes the fastening sleeve (101) and the inner sleeve (202) is arranged on the fastening sleeve (101), and a rope fastening bolt (103) is further arranged on the outer wall of the fastening sleeve (101).
2. The locking device for a core pipe of a fishing drill according to claim 1, wherein: the inner sleeve (202) is arranged in the outer sleeve (201) and penetrates through the two ends of the outer sleeve, the top end of the inner sleeve (202) is fixedly connected with the fastening sleeve assembly (1), one end of the central shaft (4) is fixed inside the inner sleeve (202), the other end of the central shaft extends out of the inner sleeve (202), one end, close to the fastening sleeve assembly (1), of the inner sleeve (202) is provided with a first screw rod (204) penetrating through the radial inner sleeve (202), the inner wall of the outer sleeve (201) is provided with an annular groove (212) which facilitates the extending out of the inner sleeve (202) for rotation, and one end, close to the fastening sleeve assembly (1), of the outer sleeve (201) is provided with a screw for preventing the first screw rod (204) from being separated from the outer sleeve (201).
3. The locking device for a core pipe of a fishing drill according to claim 2, wherein: be equipped with second screw rod (205) on interior sleeve pipe (202), second screw rod (205) radially run through center pin (4) and fix it in interior sleeve pipe (202), interior sleeve pipe (202) outer wall is worn out at the both ends of second screw rod (205) and flushes rather than the outer wall, overlaps on the outer wall of center pin (4) and establishes spring (206), one end butt second screw rod (205) of spring (206), the other end butt first sleeve pipe (5) of spring (206), be equipped with guide bolt (207) on the outer wall of first sleeve pipe (5), the regulating part is including being located restriction on interior sleeve pipe (202) and outer tube (201) guide slot that guide bolt (207) removed.
4. A locking device for a core pipe of a fishing drill according to claim 3, wherein: the guide groove comprises a toothed guide groove (210) positioned on the wall surface of the inner sleeve pipe (202), one end of the toothed guide groove (210) is provided with a first extension groove (211) extending towards the female joint assembly (3), the guide groove further comprises an arc guide groove (213) positioned on the wall surface of the outer sleeve pipe (201) and matched with the toothed guide groove (210), and one end of the arc guide groove (213) is provided with a second extension groove (203) extending towards the female joint assembly (3).
5. A locking device for a core pipe of a fishing drill according to claim 3, wherein: the outer wall of the first sleeve (5) is also provided with a lug (208) which is matched with the front end of the clamping piece (302) in a protruding way, and both ends of the lug (208) are provided with chamfer angles.
6. A method of using a locking device for a core barrel of a fishing drill according to any one of claims 1-5, wherein: the method comprises the following specific steps:
s1, one end of a female joint component (3) is connected with a coring pipe in a drilling pipe, a clamping piece (302) is in a claw shape and is opened, the front end of the clamping piece (302) stretches out of a strip-shaped groove (307) to be abutted against the inner wall of the drilling pipe, a worker fixes a rope on the ground on a fastening sleeve (101) through a rope fastening bolt (103), a first sleeve (5) in the male joint component (2) moves a compression spring (206) upwards, a guide bolt (207) on the outer wall of the compression spring is clamped in a first extension groove (211) of an inner sleeve (202), and then is clamped in an arc-shaped guide groove (213) of an outer sleeve (201);
s2, extending a male joint assembly (2) connected with a fastening sleeve (101) into a drilling pipe through a rope, extending the tail end of a central shaft (4) into a female joint assembly (3), contacting with the rear end bulge of a clamping piece (302), enabling the rear end of the clamping piece (302) to rotate outwards around a pin shaft to expand, enabling the front end of the clamping piece (302) to shrink inwards around the pin shaft, enabling the rear end bulge of the clamping piece (302) to be in fit connection with a round groove (209) of the central shaft (4) along with the further extension of the central shaft (4), forming self-locking, and pulling the rope on the ground by a worker to take out the female joint assembly (3) locked with the male joint assembly (2) and a coring pipe connected below the female joint assembly from the drilling pipe;
S3, after the female joint assembly (3) is taken out, a worker needs to rotate the outer sleeve (201), the second elongated slot (203) of the outer sleeve (201) is overlapped with the first elongated slot (211) of the inner sleeve (202), the guide bolt (207) is not clamped by the arc-shaped guide slot (213) any more, falls into the tail end of the overlapped first elongated slot (211) and second elongated slot (203), the spring (206) is released, the first sleeve (5) moves downwards, the end face of the tail end of the first sleeve (5) pushes against the rear end of the clamping piece (302), the clamping piece (302) and the rubber elastic ring (303) sleeved at the rear end of the clamping piece are propped open, the central shaft (4) is released, and the male joint assembly (2) and the female joint assembly (3) are unlocked and separated from each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401779.8A CN113107410B (en) | 2021-04-14 | 2021-04-14 | Locking device for core taking pipe of salvaging drilling and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110401779.8A CN113107410B (en) | 2021-04-14 | 2021-04-14 | Locking device for core taking pipe of salvaging drilling and application method thereof |
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| CN113107410A CN113107410A (en) | 2021-07-13 |
| CN113107410B true CN113107410B (en) | 2024-05-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464079B (en) * | 2021-07-28 | 2023-06-16 | 广东工业大学 | Auxiliary device for drilling core taking pipe and application method thereof |
| CN113853088B (en) * | 2021-08-11 | 2023-07-25 | 苏州弗乐卡电器科技发展有限公司 | Power supply mechanism and cabinet with same |
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| CN113107410A (en) | 2021-07-13 |
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