CN117248836A - Self-locking type universal slip device - Google Patents
Self-locking type universal slip device Download PDFInfo
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- CN117248836A CN117248836A CN202311471919.4A CN202311471919A CN117248836A CN 117248836 A CN117248836 A CN 117248836A CN 202311471919 A CN202311471919 A CN 202311471919A CN 117248836 A CN117248836 A CN 117248836A
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- 230000000149 penetrating effect Effects 0.000 claims description 2
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- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Clamps And Clips (AREA)
Abstract
The invention discloses a self-locking universal slip device which comprises a fixed base body, a rotating mechanism, a swinging slip body, a clamping tooth plate and a driving mechanism, wherein the fixed base body is provided with a plurality of clamping teeth; the rotating mechanism is connected to the fixed base body and can concentrically rotate around the fixed base body; one end of the swing slip body is hinged with the fixed base body, the other end of the swing slip body is in sliding connection with the rotating mechanism, and the third end of the swing slip body is hinged with the clamping tooth plate; the clamping tooth plate is connected with the fixed base body through a radial guide mechanism; the swing slip body and the clamping tooth plates are correspondingly provided with a plurality of groups; the driving mechanism can drive the rotating mechanism to rotate around the fixed base body, and the rotating mechanism drives the swinging slip body to swing through sliding connection, so as to drive the clamping tooth plate to move along the radial direction of the guiding mechanism towards the direction approaching (far away from) the center, thereby realizing clamping (opening); the self-locking universal slip device can not only safely and efficiently clamp the pipe column, but also avoid the situation that the heavy-duty tooth plate of the pipe column is blocked and can not be opened, thereby essentially improving the operation safety of the pipe column.
Description
Technical Field
The invention relates to the technical field of oil field workover tripping oil pipe devices, in particular to a self-locking universal slip device.
Background
The oil-gas field needs to be overhauled in a working period, the normal working oil-gas field has higher well pressure in the oil-gas field, and the shallow well (within 2500 m), the low-pressure well (with the wellhead pressure not higher than 10 MPa) and the deep well (with the depth more than 2500 m) are controlled by adopting opposite clamping type universal slips to control an oil pipe column, and the high-pressure well (with the wellhead pressure higher than 10 MPa) is controlled by adopting a conical self-tightening slip group to control the oil pipe column due to different oil field well conditions. The current universal slips are opened and closed in a horizontal movement mode, namely the two independent oil cylinders at the two ends of each slip are independently operated to realize the horizontal pushing of the slip body, and the two oil cylinders are difficult to reach the central position at the same time due to different manufacturing precision of the oil cylinders and friction conditions of structural members, so that the eccentricity of a pipe column is caused, and the safety of the pipe column is influenced; and when bearing, the falling force or the jacking force of the pipe column can generate a horizontal reverse thrust to the slips, and the reliable clamping thrust can be ensured only by always providing hydraulic power due to the limitation of the size of the oil cylinder and the hydraulic system, so that once the hydraulic system is stopped due to failure, the pipe column can be at risk of falling or flying the pipe without providing hydraulic power. The conical self-tightening slip set is vertically swung to open and close, and the anti-jacking and bearing combined slip is adopted, so that the overall size of the slip set is high, the slips are required to be operated according to a certain logic sequence to open and close during operation, if the slips are blocked, the slips can be opened only by forcibly moving the pipe column, the operation is complex, and the efficiency is low.
At present, the common solution of hydraulic power failure is that when the hydraulic system loses power, the safety slips are closed and locked by the pressure of the energy accumulator, so that the safety of the pipe column is ensured; and secondly, a standby hydraulic power system is configured, and once one set of hydraulic power fails, the other set of hydraulic power is started immediately, so that the construction safety is ensured.
The utility model provides a dead and complex operation problem of card of self-tightening slips, CN 115977557A has disclosed at present that one kind adopts disc spring to replace traditional compression spring's area to press operation oil pipe elevating control device, avoids the slips lock to die through four sets of disc spring assemblies that set up, has improved equipment operating efficiency, can effectively reduce personnel intensity of labour moreover. The device needs to confirm the compression state of four slips of manual work, and fixed slips group is located operation platform lower part, and operating personnel stands on the operation panel and observes that fixed slips group has certain visual angle obstacle to need operating personnel to strictly operate according to the logic action order for a long time, once misoperation, can produce the fly pipe or fall the incident of pipe.
None of the above problems have been essentially solved.
Therefore, the conventional slip device applied to the pressurized workover tripping operation of the oil and gas field is inconvenient and defective in structure, method and use, and further improvement is needed. How to create a new self-locking type universal slip device which is used for replacing the existing universal slip and self-tightening slip set, so that the intrinsic safety of the operation of lifting and lowering a tubular column during under-pressure well repairing of an oil-gas field is realized, and the device becomes a very important target to be improved in the current industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel self-locking type universal slip device which is used for replacing the conventional universal slip and self-tightening slip set, so that a pipe column can be clamped safely and efficiently, the problem that a heavy-load tooth plate of the pipe column is blocked and cannot be opened is avoided, and the intrinsic safety of the operation of lifting and lowering the pipe column under pressure in an oil-gas field is realized, thereby overcoming the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a self-locking universal slip device comprises a fixed base body, a rotating mechanism, a swinging slip body, a clamping tooth plate and a driving mechanism; the rotating mechanism is connected to the fixed base body and can concentrically rotate around the fixed base body; the driving mechanism is respectively connected with the fixed base body and the rotating mechanism; the swing slip body and the clamping tooth plate are arranged in the fixed base body; one end of the swing slip body is hinged with the fixed base body, the other end of the swing slip body is connected with the rotating mechanism in a sliding manner, and the third end of the swing slip body is hinged with the clamping tooth plate; the clamping tooth plate is connected with the fixed base body through a radial guide mechanism; the swing slip body and the clamping tooth plates are correspondingly provided with a plurality of groups; when in clamping operation, the driving mechanism drives the rotating mechanism to rotate around the fixed base body, and the rotating mechanism drives the swinging slip body to swing through sliding connection, so that the clamping tooth plate is driven to move towards the direction close to the center along the radial direction guiding mechanism, and clamping is realized; after clamping, the hinged part of the swinging slip body and the clamping tooth plate is positioned between the sliding connection part of the swinging slip body and the rotating mechanism and the hinged part of the swinging slip body and the fixed base body to form self-locking; when the clamping tooth plate is opened, the driving mechanism acts reversely to drive the rotating mechanism to revolve around the fixed base body, and the rotating mechanism drives the swinging slip body to swing through sliding connection, so that the clamping tooth plate is driven to move along the radial direction of the guiding mechanism to be far away from the center, and the opening is realized.
As a further improvement of the invention, the rotating mechanism comprises a cylindrical rotating shell, a plurality of groups of fixed cam structures are arranged in the cylindrical rotating shell, the fixed cam structures comprise radial protruding bodies connected in the cylindrical rotating shell, a central shaft and rollers connected on the central shaft are arranged on the radial protruding bodies, and the rollers are in close contact with roller slide ways arranged on the swinging slip bodies; the roller is driven by the rotating mechanism to roll along a roller slideway on the swinging slip body to drive the swinging slip body to swing along a hinge joint with the fixed base body, so that a clamping tooth plate on the swinging slip body is driven to realize clamping and opening actions.
Further, a bulge accommodating cavity is formed in the middle section of the swing slip body, and roller slide ways are arranged on the upper surface and the lower surface of the swing slip body; the upper end and the lower end of the central shaft at the tail end of the radial protruding body are respectively provided with a roller, and the rollers are respectively in close contact with roller slide ways arranged on the upper surface and the lower surface of the swinging slip body.
Further, the fixing base body comprises an upper fixing base body and a lower fixing base body; the upper fixing base body is a cover plate, and is provided with a limiting protrusion, a fixing pin shaft hole and a fixing connecting hole; the lower fixed base body is provided with a plurality of groups of fixed pin shafts for installing the swinging slip body and penetrating through the fixed pin holes on the cover plate to realize the hinging of the fixed base body and the swinging slip body; the lower fixing base body is also provided with a limit notch and a fixed connection hole which correspond to the cover plate, and the lower fixing base body and the upper fixing base body are connected into a whole through bolts.
Further, a plurality of groups of radial guide grooves are formed in the lower fixing base body, and radial guide keys are arranged at the bottoms of the clamping tooth dies and move along the radial guide grooves.
Further, driving mechanism connecting holes are respectively formed in the upper fixing base body and the lower fixing base body and are connected with the driving mechanism through pin shafts; the rotating mechanism is also provided with a driving mechanism connecting hole which is connected with the driving mechanism through a pin shaft.
Further, the clamping dental plate comprises a dental plate seat and two dental plates, the two dental plates are connected in a built-in dental plate groove of the dental plate seat through dental plate fixing pins, and a swinging space is formed between the dental plates and the built-in dental plate groove; the tooth plate seat is hinged with the third end of the swinging slip body through a tooth plate seat pin shaft.
Further, the dental plate of the clamping dental plate is a replaceable dental plate in assembly, and has different dental plates according to different pipe diameters.
Further, the driving mechanism is a driving cylinder, one end of the driving mechanism is connected to the fixed base body, the other end of the driving mechanism is connected to the rotating mechanism, and the driving mechanism is extended to drive the rotating mechanism to rotate around the fixed base body; the rotating mechanism is driven to revolve around the fixed base body through retracting reverse action; and/or the swinging slip body and the clamping tooth plate are correspondingly provided with three groups.
Further, the self-locking type universal slip device is applied to the operation of lifting and lowering a tubular column of an oil-gas field under-pressure well repairing well.
By adopting the technical scheme, the invention has at least the following advantages:
according to the self-locking type universal slip device, the swinging slips are driven to swing through the rotating mechanism so as to drive the clamping tooth plates to move towards the direction close to the center, the pipe column is reliably clamped in a self-locking state formed after the rotating mechanism and the swinging slip body are pre-tightened, synchronous operation of a plurality of groups of swinging slip bodies and the clamping tooth plates is realized, the pipe column can be safely and efficiently clamped, the phenomenon that the pipe column heavy-load tooth plates are blocked and cannot be opened is avoided, and the operation safety of the pipe column is essentially improved.
Drawings
The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the self-locking principle of a self-locking universal slip device of the present invention;
FIG. 2 is a schematic view of an exploded construction of a self-locking universal slip assembly according to the present invention;
FIG. 3 is a schematic view of a gripping configuration of a self-locking universal slip device according to the present invention;
FIG. 4 is a schematic view of an open state of a self-locking universal slip device of the present invention;
FIG. 5 is a schematic view of a rotary mechanism of a self-locking universal slip device according to the present invention;
FIG. 6 is a schematic view of the structure of the upper and lower stationary matrix of a self-locking universal slip assembly according to the present invention;
FIG. 7 is a schematic view of a gripping tooth plate structure of a self-locking universal slip device of the present invention;
FIG. 8 is a schematic view of the installation of a dental plate of a self-locking universal slip device of the present invention.
In the figure: 1-fixing a substrate; 2-a rotation mechanism; 3-swinging the slip body; 4-clamping the dental plate; 5-a driving mechanism; o (O) 1 -swinging the articulation of the slip body with the fixed base (fixed centre of rotation); o (O) 2 -the sliding connection of the oscillating slip body with the rotation mechanism (the centre of rotation of the cam structure); o (O) 3 Swing the slips body and clamp the die articulation (die plate stress center); f (F) 2 -a force applied by the cam structure to the oscillating slip body when gripping the pipe string; f (F) 3 -a force of a string load on the swinging slip body when gripping the string; 11-upper fixing base; 12-lower fixing base; 111-limit protrusions; 112-fixed pinA hole; 113-fixing the connecting hole; 115-a drive mechanism connection hole; 121-limiting notch; 122-fixing a pin shaft; 123-fixing the connecting hole; 124-radial guide grooves; 125-drive mechanism connection holes; 201-a cylindrical rotary housing; 202-radial protrusions; 203-a central axis; 204-a roller; 205-a driving mechanism connection hole; 301-a bay accommodating cavity; 302-a roller slideway; 401-dental plate holder; 402-dental plate; 403-dental plate fixing pins; 404-built-in dental lamina groove; 405-a dental plate seat pin shaft; 406-radial guide keys.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a self-locking universal slip device which can be applied to the operation of lifting and lowering a tubular column during the under-pressure well repairing of an oil-gas field, and realizes the operation safety.
As shown in fig. 1-2, a self-locking universal slip device of the present embodiment includes a fixed base 1, a rotating mechanism 2, a swinging slip body 3, a clamping tooth plate 4 and a driving mechanism 5. Wherein, the rotating mechanism 2 is connected to the fixed base body 1 and can rotate concentrically around the fixed base body 1; the driving mechanism 5 is connected to the fixed base 1 and the rotating mechanism 2, respectively, and can drive the rotating mechanism 2 to rotate around the fixed base 1.
The swinging slip body 3 and the clamping tooth plate 4 are arranged in the fixed base body 1, and a plurality of groups can be correspondingly arranged on the swinging slip body and the clamping tooth plate, and in the embodiment, 3 groups are preferably arranged; one end of the swinging slip body 3 is hinged with the fixed base body 1, O 1 In order to swing the hinge joint (fixed rotation center) of the slip body 3 and the fixed base body 1, the other end of the slip body 3 is connected with the rotating mechanism 2 in a sliding way, O 2 In order to swing the sliding connection part (the rotation center of the cam structure) between the slip body 3 and the rotation mechanism 2, the third end of the swing slip body 3 is hinged with the clamping tooth plate 4, O 3 The joint (tooth plate stress center) of the swing slip body 3 and the clamping tooth plate 4 is provided; the clamping dental plate 4 passes through the fixed base body 1The radial guiding mechanism is connected.
When the clamping operation is carried out, the driving mechanism 5 drives the rotating mechanism 2 to rotate around the fixed base body 1, the rotating mechanism 2 drives the swinging slip body 3 to swing through sliding connection, and then the clamping tooth plates 4 are driven to move towards the direction close to the center along the radial direction of the guiding mechanism, so that the pipe column is clamped; after gripping the pipe string, the slip body 3 is swung at its hinge with the gripping tooth plate 4 (corresponding to O in fig. 1 3 The point) is located at the sliding connection point of the point and the rotating mechanism (corresponding to O in figure 1 2 Point) and its articulation with the fixed base (corresponding to O in fig. 1 1 Points), after clamping the pipe string, the mechanism is in a self-locking state as can be obtained through basic mechanical knowledge: irrespective of F 3 The rotating mechanism 2 does not retreat as long as the strength of the mechanism is not problematic, so that the clamping tooth plate 4 does not move, the swinging slip body 3 and the rotating mechanism 2 form a self-locking structure, and the self-locking of the mechanism is realized.
When the pipe column is opened, the driving mechanism 5 drives the rotating mechanism 2 to rotate around the fixed base body 1 in a reverse action mode, the rotating mechanism 2 drives the swinging slip body 3 to swing through sliding connection, and then the clamping tooth plates 4 are driven to move along the radial direction towards the guiding mechanism to be far away from the center, so that the pipe column is opened and loosened.
The preferred structure of each part is further described below with reference to the accompanying drawings:
as shown in fig. 2 and 5, the rotating mechanism 2 includes a cylindrical rotating housing 201, three groups of fixed cam structures are disposed in the cylindrical rotating housing 201, each fixed cam structure includes a radial protruding body 202 connected in the cylindrical rotating housing 201, a central shaft 203 and rollers 204 connected to the central shaft 203 are disposed on the radial protruding body 202, and 2 rollers 204 are preferably disposed simultaneously and are respectively located at the upper end and the lower end of the central shaft 203.
The middle section of the swing slip body 3 is provided with a bulge accommodating cavity 301, and the upper surface and the lower surface of the swing slip body 3 are provided with roller slide ways 302; when assembled, radial protrusions 202 are placed into protrusion receiving cavities 301, and rollers 204 are in intimate contact with roller ramps 302.
The driving mechanism 5 drives the rotating mechanism 2 to rotate around the fixed base body 1, the radial protruding body 202 of the rotating mechanism 2 drives the roller 204, and when the roller 204 is driven by the rotating mechanism 2, the roller 204 can roll along the roller slideway 302 on the swinging slip body 3 to drive the swinging slip body 3 to swing along the hinging position of the swinging slip body and the fixed base body 1, so that the clamping tooth plate 4 on the swinging slip body 3 is driven to realize clamping and opening actions.
As shown in fig. 2 and 6, the fixing base 1 comprises an upper fixing base 11 and a lower fixing base 12; the upper fixing base 11 is a cover plate, and is provided with a limit protrusion 111, a fixing pin shaft hole 112 and a fixing connection hole 113; the lower fixed base body 12 is provided with a limit notch 121, a fixed pin 122 and a fixed connecting hole 123 which correspond to the cover plate; the fixed pin 121 is used for installing the swing slip body 3, penetrates through a rotation pin hole arranged on the swing slip body 3, and further penetrates through a fixed pin hole 112 on the cover plate, so that the fixed base body 1 and the swing slip body 3 are hinged. The upper fixing base 11 and the lower fixing base 12 are integrally coupled by bolts inserted into the fixing coupling holes 113, 123.
Three sets of radial guide grooves 124 are also provided on the lower fixing base 12 for guiding the clamping tooth plate 4. In addition, the upper fixing base 11 and the lower fixing base 12 are respectively provided with driving mechanism connecting holes 115 and 125, and are connected with the driving mechanism 5 through pin shafts; as shown in fig. 5, the rotation mechanism 2 is also provided with a drive mechanism connection hole 205, and is connected to the drive mechanism 5 via a pin.
As shown in fig. 7 and 8, the clamping dental plate 4 comprises a dental plate seat 401 and two dental plates 402, the two dental plates 402 are connected in a built-in dental plate groove 404 of the dental plate seat 401 through dental plate fixing pins 403, a swinging space is formed between the dental plates 402 and the built-in dental plate groove 404, a certain range of swinging angles are formed, and the change of the clamping angles is automatically adapted; the tooth plate holder 401 is hinged to a pin hole on the third end of the swing slip body 3 by a tooth plate holder pin 405. The clamping tooth plate 4 is provided with radial guide keys 406 at the bottom, the radial guide keys 406 being movable along radial guide grooves 124 on the lower fixing base 12.
Preferably, the dental plate 402 of the clamping dental plate 4 is a replaceable dental plate when assembled, and different dental plates are replaced according to the pipe diameters.
The driving mechanism 5 is driven by power to realize the relative rotation of the rotating mechanism 2 and the fixed base body 1, so as to drive the internal swinging slip body 3 to swing. The driving mechanism 5 preferably adopts a driving cylinder, one end of the driving cylinder is connected to the fixed base body 1, the other end of the driving cylinder is connected to the rotating mechanism 2, and the rotating mechanism 2 is driven to rotate around the fixed base body 1 by extending; the rotation mechanism 2 is driven to rotate around the fixed base 1 by the retracting reverse action. Of course, the driving power is different, and the function can be realized.
In this embodiment, swing slips body 3 and clamp tooth board 4 equipartition set up the multiunit on fixed base member 1, realize synchronous motion through rotary mechanism 2 to realize embracing the omnidirectional of tubular column, the tubular column can be in central point completely. The driving mechanism 5 can drive the rotating mechanism 2 to rotate around the fixed base body 1, the idler wheels 204 drive the swinging slip body 3 to swing, so that the clamping tooth plates 4 are pushed to the pipe column clamping position, at the moment, the idler wheel position points on the swinging slip body 3 pass through the stress points of the clamping tooth plates 4 to form mechanism self-locking, when the pipe column falls down to generate horizontal thrust to increase, the horizontal thrust is larger, the pipe column is clamped more firmly, and at the moment, the driving mechanism 5 is basically not influenced by the increase of the horizontal force, so that the requirement on hydraulic clamping force is reduced. When the clamping tile needs to be opened, the driving mechanism 5 acts reversely, and the swinging slip body 3 drives the clamping tooth plate 4 to retract along the radial direction, so that the clamping tooth plate is not blocked. The strength of the structural part is enough, the self-locking structure of the swing rod formed by the rotating mechanism 2 and the swing slip body essentially ensures the intrinsic safety of the operation of the pipe column, the clamping tooth plate 4 realizes radial centering movement along the pipe column under the action of the roller 204 and the swing slip body 3, and the centering clamping precision and the opening reliability are improved, so that the operation efficiency can be improved.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.
Claims (10)
1. The self-locking universal slip device is characterized by comprising a fixed base body, a rotating mechanism, a swinging slip body, a clamping tooth plate and a driving mechanism;
the rotating mechanism is connected to the fixed base body and can concentrically rotate around the fixed base body; the driving mechanism is respectively connected with the fixed base body and the rotating mechanism;
the swing slip body and the clamping tooth plate are arranged in the fixed base body; one end of the swing slip body is hinged with the fixed base body, the other end of the swing slip body is connected with the rotating mechanism in a sliding manner, and the third end of the swing slip body is hinged with the clamping tooth plate; the clamping tooth plate is connected with the fixed base body through a radial guide mechanism; the swing slip body and the clamping tooth plates are correspondingly provided with a plurality of groups;
when in clamping operation, the driving mechanism drives the rotating mechanism to rotate around the fixed base body, and the rotating mechanism drives the swinging slip body to swing through sliding connection, so that the clamping tooth plate is driven to move towards the direction close to the center along the radial direction guiding mechanism, and clamping is realized; after clamping, the hinged part of the swinging slip body and the clamping tooth plate is positioned between the sliding connection part of the swinging slip body and the rotating mechanism and the hinged part of the swinging slip body and the fixed base body to form self-locking;
when the clamping tooth plate is opened, the driving mechanism acts reversely to drive the rotating mechanism to revolve around the fixed base body, and the rotating mechanism drives the swinging slip body to swing through sliding connection, so that the clamping tooth plate is driven to move along the radial direction of the guiding mechanism to be far away from the center, and the opening is realized.
2. The self-locking universal slip device according to claim 1, wherein the rotating mechanism comprises a cylindrical rotating shell, a plurality of groups of fixed cam structures are arranged in the cylindrical rotating shell, the fixed cam structures comprise radial protruding bodies connected in the cylindrical rotating shell, a central shaft and rollers connected on the central shaft are arranged on the radial protruding bodies, and the rollers are in tight contact with roller slide ways arranged on the swinging slip body; the roller is driven by the rotating mechanism to roll along a roller slideway on the swinging slip body to drive the swinging slip body to swing along a hinge joint with the fixed base body, so that a clamping tooth plate on the swinging slip body is driven to realize clamping and opening actions.
3. The self-locking universal slip device according to claim 2, wherein a protrusion accommodating cavity is arranged in the middle section of the swing slip body, and roller slide ways are arranged on the upper surface and the lower surface of the swing slip body; the upper end and the lower end of the central shaft at the tail end of the radial protruding body are respectively provided with a roller, and the rollers are respectively in close contact with roller slide ways arranged on the upper surface and the lower surface of the swinging slip body.
4. The self-locking universal slip assembly of any of claims 1-3, wherein the stationary matrix comprises two portions, an upper stationary matrix and a lower stationary matrix;
the upper fixing base body is a cover plate, and is provided with a limiting protrusion, a fixing pin shaft hole and a fixing connecting hole; the lower fixed base body is provided with a plurality of groups of fixed pin shafts for installing the swinging slip body and penetrating through the fixed pin holes on the cover plate to realize the hinging of the fixed base body and the swinging slip body; the lower fixing base body is also provided with a limit notch and a fixed connection hole which correspond to the cover plate, and the lower fixing base body and the upper fixing base body are connected into a whole through bolts.
5. The self-locking universal slip assembly of claim 4, wherein the lower stationary matrix is provided with a plurality of sets of radial guide grooves, and the bottom of the gripping die is provided with radial guide keys that move along the radial guide grooves.
6. The self-locking universal slip device according to claim 4, wherein the upper fixing base body and the lower fixing base body are respectively provided with a driving mechanism connecting hole, and are connected with the driving mechanism through a pin shaft; the rotating mechanism is also provided with a driving mechanism connecting hole which is connected with the driving mechanism through a pin shaft.
7. The self-locking universal slip device according to any one of claims 1-3, wherein the clamping tooth plate comprises a tooth plate seat and two tooth plates, the two tooth plates are connected in a built-in tooth plate groove of the tooth plate seat through tooth plate fixing pins, and a swinging space is arranged between the tooth plates and the built-in tooth plate groove;
the tooth plate seat is hinged with the third end of the swinging slip body through a tooth plate seat pin shaft.
8. The self-locking universal slip assembly of claim 7, wherein the tooth plates of the gripping tooth plates are replaceable during assembly, having different tooth plates depending on different tube diameters.
9. A self-locking universal slip assembly according to any one of claims 1 to 3, wherein the drive mechanism is a drive cylinder, one end of which is connected to the fixed base and the other end of which is connected to the rotary mechanism, and the rotary mechanism is driven to rotate around the fixed base by extension; the rotating mechanism is driven to revolve around the fixed base body through retracting reverse action;
and/or the swinging slip body and the clamping tooth plate are correspondingly provided with three groups.
10. A self-locking universal slip device according to any one of claims 1-3, wherein the self-locking universal slip device is a self-locking universal slip device for use in pressurized workover tripping operations in oil and gas fields.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202311471919.4A CN117248836A (en) | 2023-11-07 | 2023-11-07 | Self-locking type universal slip device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202311471919.4A CN117248836A (en) | 2023-11-07 | 2023-11-07 | Self-locking type universal slip device |
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CN117248836A true CN117248836A (en) | 2023-12-19 |
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CN202311471919.4A Pending CN117248836A (en) | 2023-11-07 | 2023-11-07 | Self-locking type universal slip device |
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CN (1) | CN117248836A (en) |
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2023
- 2023-11-07 CN CN202311471919.4A patent/CN117248836A/en active Pending
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