CN113914795B - Jaw drill rod dismounting clamp - Google Patents
Jaw drill rod dismounting clamp Download PDFInfo
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- CN113914795B CN113914795B CN202111337493.4A CN202111337493A CN113914795B CN 113914795 B CN113914795 B CN 113914795B CN 202111337493 A CN202111337493 A CN 202111337493A CN 113914795 B CN113914795 B CN 113914795B
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- clamp
- oil cylinder
- friction
- claw
- telescopic arm
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Machine Tool Units (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a jaw drill rod dismounting clamp which comprises a slewing bearing, a telescopic arm, a clamp, a friction driving device and the like. The slewing bearing comprises a base and a slewing body. The revolving body is in running fit with the base; one end of the telescopic arm is connected with the revolving body and driven by the oil cylinder to do one-stage or multi-stage telescopic movement; the caliper comprises a static clamp claw, a movable clamp claw and a clamping oil cylinder. The static clamp claw is connected with the other end of the telescopic arm and is arranged in a horizontal clamp shape with the movable clamp claw. The clamping oil cylinder is arranged in the static clamp claw; the friction driving device comprises a friction wheel, a hydraulic motor, a speed reducing device and the like, is divided into two groups, is symmetrically distributed relative to the telescopic arm, and is respectively connected with the static clamp claw and the movable clamp claw. The friction wheel rotation is driven by the hydraulic motor. The hydraulic motor is provided with a hydraulic source by a hydraulic system. The jaw drill rod dismounting clamp has large driving moment and can meet the dismounting of a large jaw drill rod joint.
Description
Technical Field
The invention belongs to the technical field of large-scale drilling rigs, and particularly relates to a jaw drill rod dismounting clamp.
Background
In the prior art, a large engineering driller adopts a drill rod in the work of a drilling process of transmitting power, mud protecting walls and gas-compression reverse circulation well washing. Because the jaw drill pipe joint has large bearing capacity, high reliability and quick disassembly, the large-scale engineering drilling machine uses more drill pipes of the jaw drill pipe joint. With the continuous improvement of the drilling capability, the torque force required to be overcome for disassembling the jaw drill pipe joint is larger and larger, and manual disassembly is mostly adopted in the prior art, so that the requirements cannot be met.
Publication number CN2674073Y proposes a hydraulic clamp, but the jaw drill rod dismounting clamp has a low degree of freedom and a large space occupation.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides the jaw drill rod dismounting clamp which has high driving power, strong adaptability and flexibility, can solve the dismounting problem of a large-scale jaw drill rod, and is simple to operate and compact in structure.
The jaw drill rod dismounting clamp comprises a slewing bearing, a telescopic arm, a clamp, a friction wheel driving device, a hydraulic system and the like.
The slewing bearing mainly comprises a base and a gyrorotor, wherein the base is fixed on a chassis or other parts of the drilling machine, and the gyrorotor can horizontally rotate around the base;
The telescopic arm is formed by nesting two hollow rods or a plurality of hollow rods, a driving oil cylinder of the telescopic arm is arranged in a cavity of the telescopic arm, the large end of the horizontally arranged telescopic arm is fixedly connected with the revolving body, the telescopic arm is driven by the oil cylinder to do one-stage or multi-stage telescopic movement, and the small end of the telescopic arm is fixedly connected with the caliper;
The caliper mainly comprises two clamp claws and a clamping oil cylinder, each clamp claw is in a bent rod shape, and the two clamp claws are horizontally arranged in a clamp shape and are driven by the clamping oil cylinder to relatively open and close;
The inner openings of the two clamp claws are fixedly connected with friction driving devices, each friction driving device drives a friction wheel to rotate through a hydraulic motor, the friction driving devices of the two clamp claws are symmetrically arranged relative to the axis of the telescopic arm, during operation, the two clamp claws clamp a drill rod joint needing to rotate through each friction wheel under the action of the clamping oil cylinder, the bus of each friction wheel coincides with the outer circle bus of the driven drill rod joint, all the friction wheels drive the drill rod joint needing to rotate for a certain angle towards the same direction, and therefore embedding or disengaging of teeth in the jaw type drill rod joint is achieved.
A friction braking device is arranged between the base of the slewing bearing and the revolving body, the friction braking device comprises a friction plate, a pre-tightening spring, an unlocking oil cylinder and the like, the pre-tightening spring applies positive pressure to the friction plate to generate braking torque to implement slewing braking on the revolving body, and when the unlocking oil cylinder acts, the pre-tightening spring is further compressed, and the pre-tightening spring is disengaged from the friction plate to release braking on the revolving body.
In the embodiment of the invention, one of the two jaws of the caliper is a static jaw, the other jaw is a movable jaw, one end of the clamping cylinder is hinged with the static jaw, the other end of the clamping cylinder is hinged with the movable jaw, the static jaw is fixedly connected with the small end of the telescopic arm, the static jaw is provided with a slideway vertical to the telescopic arm, and the movable jaw can reciprocate along the slideway of the static jaw under the pushing of the clamping cylinder so as to realize the clamping and loosening actions of the two jaws.
In the embodiment of the invention, when the friction wheel driving device drives a plurality of friction wheels on the same claw, each friction wheel device is not directly fixed on the claw, but is arranged on the base frame, the base frame is designed according to the balance beam principle, and the pressure uniform load of a plurality of friction wheels on the same claw can be realized, namely, the base frame and the base frame on the same claw and the base frame and the claw are hinged by pin shafts, and the hinged pin shafts are parallel to the friction wheel shafts. In order to increase the driving moment of each friction wheel and reduce the volume of the friction wheel, the friction wheel is internally provided with a speed reducer, and the speed reducer has the basic structure of a planetary speed reducer, namely a sun wheel, a planet carrier and an internal gear.
In each working cycle, the jaw type drill rod dismounting clamp only needs to manually adjust the rough position of the dismounting clamp, and the automatic complete positioning of the drill rod dismounting clamp on the drill rod joint can be realized by means of the slipping of the friction plate in the slewing bearing inner revolving body friction braking device and the floatability of the telescopic arm driving oil cylinder.
The hydraulic system refers to the integration of a hydraulic pump station, hydraulic control and an electric control system, and is fixed on a drilling machine at a convenient operation place.
The beneficial effects are that:
By adopting the technical scheme, the special dismounting device for the jaw drill rod of the large engineering drilling machine solves the dismounting problem of the jaw drill rod. The friction wheel is adopted for driving, so that the working station can be quickly moved in during working, and the working station can be quickly evacuated after the working is finished, therefore, the device can be almost suitable for any large-scale drilling machine adopting a jaw drill rod, and the characteristic of strong adaptability is reflected; the jaw is automatic in accurate positioning of the drill rod, so that the jaw has the characteristics of simplicity and convenience in operation and flexibility in operation; various oil cylinders, speed reducers and the like are all designed in a built-in mode, so that the jaw drill rod dismounting clamp has the characteristic of compact structure.
Drawings
FIG. 1 is a front view of a jaw drill pipe assembly and disassembly pliers according to an embodiment of the present invention;
FIG. 2 is a top view of a jaw drill pipe assembly and disassembly clamp according to an embodiment of the present invention;
FIG. 3 is a schematic view of a friction drive device for a jaw drill pipe assembly and disassembly clamp according to an embodiment of the present invention;
Fig. 4 is an enlarged view of a jaw assembly and disassembly clamp chassis and a slewing device according to an embodiment of the invention.
Reference numerals:
A slewing bearing flange 1; a base 2; a revolving body 3; a rolling bearing 4; a friction plate 5; a pre-tightening spring 6; unlocking the oil cylinder 7; a large end flange 8; a first hollow bar 9; a second hollow bar 10; a third hollow bar 11; a small end flange 12; a two-stage telescopic cylinder 13; a hinge shaft 14, a hinge shaft 15, a key 16; a static jaw 17; a movable jaw 18; a spherical hinge pad 19; a clamp cylinder 20; a hinge shaft 21; a hinge shaft 22; a hinge shaft 23; a base frame 24; a hydraulic motor 25; a sun gear 26; a carrier 27; a planet wheel 28; friction wheels (internal gears) 29, upper half shafts 31, lower half shafts 32; a nylon column 33; and a flange 34.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
As shown in fig. 1,2 and 3, in order to solve the above technical problems, the present invention adopts the following technical scheme: the jaw drill rod dismounting clamp comprises a slewing bearing, a telescopic arm, a clamp, a friction wheel driving device, a hydraulic system and the like.
As shown in fig. 1, the slewing bearing is mainly composed of a base 2, a slewing body 3, and the like. The base 2 is fixed on a chassis or other parts of the drilling machine through the slewing bearing flange 1, a rolling bearing 4 is arranged between the revolving body 3 and the base 2, and the revolving body 3 can horizontally rotate around the base 2. The friction braking device is arranged between the base 2 of the slewing bearing and the revolving body 3, the friction braking device is arranged in a cavity of the revolving body 3 and comprises a friction plate 5, a pre-tightening spring 6, an unlocking oil cylinder 7, a seat frame and an upper gland, the friction plate 5 comprises an external tooth friction plate and an internal tooth friction plate, an external spline of the external tooth friction plate is meshed with an internal spline of the seat frame, an internal spline of the internal tooth friction plate is meshed with an external spline of a tooth sleeve, the external tooth friction plate and the internal tooth friction plate are stacked alternately in sequence, the pre-tightening spring 6 is arranged inside the unlocking oil cylinder 7, and the unlocking oil cylinder 7 is respectively connected with the seat frame, the upper gland and an adjusting nut. The braking torque generated by the positive pressure applied to the friction plate 5 by the pre-tightening spring 6 arranged in the unlocking cylinder 7 applies the rotary braking to the rotary body 3. When the unlocking cylinder 7 is operated, the preload spring 6 is further compressed, and the preload spring 6 is disengaged from the friction plate 5, thereby releasing the braking of the revolving unit 3.
As shown in fig. 1 and 2, the telescopic arm is formed by nesting three round pipes, and is respectively a first hollow rod 9 (fixed arm), a second hollow rod 10 (primary arm) and a third hollow rod 11 (secondary arm), which can perform secondary expansion and contraction, and a driving oil cylinder 13 is a secondary telescopic oil cylinder and is arranged in a cavity of the telescopic arm. One end of the telescopic cylinder 13 is hinged with the large end 14 of the fixed arm, and the other end is hinged with the tail end 15 of the secondary arm. The large end of the horizontally arranged telescopic arm is fixedly connected with the revolving body through a large end flange 8, the small end of the telescopic arm is fixedly connected with the caliper through a small end flange 12, and the telescopic arm is driven by an oil cylinder 13 to do secondary telescopic movement. To limit the relative rotation between the arms of the telescopic arm, the first hollow rod 9 and the second hollow rod 10 are respectively provided with key grooves, keys 16 corresponding to the key grooves are respectively fixed on the second hollow rod 10 and the third hollow rod 11, and each key 16 slides in the key groove so as to adapt to the telescopic movement of the telescopic arm.
As shown in fig. 2, the caliper is mainly composed of two jaws (a stationary jaw 17, a movable jaw 18) and a clamping cylinder 20. One end of the clamping cylinder 20 is hinged with the static clamp claw 17 through a hinge shaft 21, and the other end of the clamping cylinder is hinged with the movable clamp claw 18 through a hinge shaft 22. The static clamp claw 17 is connected with a small end flange of the telescopic arm, and a square hole-shaped slideway perpendicular to the telescopic arm is arranged on the static clamp claw. One end of the movable clamp claw 18 is embedded in a slideway of the static clamp claw 17 and can reciprocate along the slideway under the pushing of the clamping cylinder 20 so as to realize the clamping and loosening actions of the two clamp claws. Each claw is folded arm-shaped, and two claws are horizontally arranged in a pincer shape.
As shown in fig. 2 and 3, two friction driving devices are respectively arranged at the inner opening of each jaw. The two friction driving devices of the same claw are not directly fixed on the claw, but are arranged on the base frame 24, and the base frame 24 is designed according to the balance beam principle, so that the pressure load of the two friction wheels 29 on the same claw can be realized. The base frame 24 is hinged 23 with the clamp claw by a pin shaft, and the pin shaft of the hinge 23 is parallel to the shaft of the friction wheel 29. The friction driving devices of the two jaws are symmetrically arranged in the horizontal plane relative to the axis of the telescopic arm, and when in operation, the two jaws clamp a drill rod joint which needs to rotate through each friction wheel 29 under the action of the clamping oil cylinder 20. The generatrix of each friction wheel 29 coincides with the external circular generatrix of the driven drill pipe joint, and all friction wheels 29 drive the drill pipe joint needing to rotate a certain angle towards the same direction, so that the embedding or the releasing of 'teeth' in the jaw drill pipe joint is realized. In order to increase the drive torque of each friction drive and to make the structure compact, the friction wheel 29 is built in with a reducer having the basic structure of a planetary reducer, namely, a sun wheel 26, a planet wheel 28, a planet carrier 27 and an internal gear 29, and is characterized in that the planet carrier 27 is fixed with the base frame 24, the friction wheel 29 is also an internal gear, and the friction wheel 29 serving as an internal gear rotates relative to the base frame 24 via the reducer under the drive of the hydraulic motor 25. The base frame 24 is of an integral open structure to facilitate loading of the friction wheel assembly with the decelerator from the open mouth of the base frame 24. The planet carrier 27 is supported at both ends by upper and lower half shafts 31 and 32, respectively, into holes in upper and lower plates of the base frame 24, respectively, and the friction wheels are supported on the two half shafts 31 and 32 by roller bearings 30. A saddle nylon pin 33 is provided between the mating cylindrical surfaces of the lower axle shaft 32 and the planet carrier 27 to effect transmission of the reaction torque of the planet carrier 27 to the friction wheel 29, which is ultimately transmitted to the base 24 as the lower axle shaft 32 is connected to a lower box flange 34 of the base 24.
In each working cycle, the jaw type drill rod dismounting clamp can realize the automatic accurate positioning of the drill rod dismounting clamp on the drill rod joint by manually adjusting the initial position of the dismounting clamp and depending on the slipping of the friction plate 5 in the slewing bearing inner revolving body friction braking device and the floatability (determined by a hydraulic system) of the telescopic arm driving oil cylinder 13.
The motion control of each oil cylinder and each hydraulic motor is realized by the hydraulic system. The hydraulic system refers to the integration of a hydraulic pump station, hydraulic control and an electric control system, and is fixed on a drilling machine at a convenient operation place.
The invention is used as auxiliary operation equipment when the jaw drill rod is adopted by the large engineering drilling machine, solves the difficult problem of disassembly and assembly of the large jaw drill rod, and has the advantages of strong adaptability, compact structure, flexibility, easy operation and the like.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "left", "right", "front", "rear", "upper", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
Claims (2)
1. Jaw drill pipe dismouting pincers, characterized by, include:
The slewing bearing comprises a base and a revolving body, wherein the base is fixed on a chassis or other parts of the drilling machine, and the revolving body is in running fit with the base;
The clamp comprises a clamp body and a clamp body, wherein the clamp body comprises a clamp head and a clamp head, the clamp head is connected with the clamp body through a connecting rod, the clamp head is connected with the clamp head through a connecting rod, the clamp head comprises two clamp claws and a clamping oil cylinder, the clamp head is arranged in a clamp shape between the two clamp claws, and the clamp oil cylinder can drive the two clamp claws to open or close;
one end of the telescopic arm is connected with the revolving body; the other end of the telescopic arm is connected with the caliper;
The friction wheel driving devices comprise friction wheels, a speed reducing device and a hydraulic motor, the friction wheel driving devices are arranged at the inner openings of the two clamp claws and are respectively connected with the two clamp claws, the friction wheel driving devices are symmetrically distributed relative to the axis of the telescopic arm, the hydraulic motor is used for driving the friction wheels to rotate, and the outer circle generatrix of the friction wheels is overlapped with the outer circle generatrix of the jaw drill rod joint;
The telescopic arm comprises a plurality of hollow rods and a driving oil cylinder, wherein the hollow rods are mutually nested to form a cavity and have different inner diameters, the hollow rods are mutually nested to form a large-diameter end and a small-diameter end, the driving oil cylinder is arranged in the cavity, the large-diameter end of the hollow rod is connected with the revolving body, and the small-diameter end of the hollow rod is connected with the caliper;
The two clamp claws are respectively a static clamp claw and a movable clamp claw, one end of the clamping oil cylinder is hinged with the static clamp claw, the other end of the clamping oil cylinder is hinged with the movable clamp claw, the static clamp claw is connected with the small-diameter end of the telescopic arm, a slideway is arranged on the static clamp claw, the movable clamp claw can reciprocate along the slideway, and the clamping oil cylinder is used for driving the movable clamp claw to reciprocate;
The friction braking device comprises a friction plate, a pre-tightening spring, an unlocking oil cylinder, a seat frame and an upper gland, wherein the friction plate comprises an external tooth friction plate and an internal tooth friction plate which are sequentially stacked alternately, the external tooth friction plate is meshed with the seat frame and matched with the seat frame, the pre-tightening spring is arranged in the unlocking oil cylinder, and the unlocking oil cylinder is connected with the seat frame, the upper gland and an adjusting nut respectively;
The novel friction wheel is characterized by further comprising a base frame, wherein the base frame is arranged at the inner openings of the two clamp claws and is connected with the clamp claw through a pin shaft, the friction wheels are arranged on the base frame, and the pin shaft is parallel to the friction wheel shaft;
The friction wheel is internally provided with a speed reducer, the speed reducer comprises a sun wheel, a planet carrier and an internal gear, the planet carrier is fixedly connected with the base frame, the friction wheel is also used as the internal gear to rotate relative to the base frame through the speed reducer under the drive of a hydraulic motor, two ends of the planet carrier are respectively supported in holes of an upper box plate and a lower box plate of the base frame by extension of an upper half shaft and a lower half shaft, the friction wheel is supported on the two half shafts through roller bearings, the planet wheel is respectively meshed with the internal gear, and the sun wheel is respectively meshed with the planet wheel.
2. The jaw drill pipe disassembly and assembly clamp according to claim 1, wherein: the driving oil cylinder, the clamping oil cylinder, the hydraulic motor and the unlocking oil cylinder are all controlled by a hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111337493.4A CN113914795B (en) | 2021-11-12 | 2021-11-12 | Jaw drill rod dismounting clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111337493.4A CN113914795B (en) | 2021-11-12 | 2021-11-12 | Jaw drill rod dismounting clamp |
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| Publication Number | Publication Date |
|---|---|
| CN113914795A CN113914795A (en) | 2022-01-11 |
| CN113914795B true CN113914795B (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111337493.4A Active CN113914795B (en) | 2021-11-12 | 2021-11-12 | Jaw drill rod dismounting clamp |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991688B (en) * | 2022-07-20 | 2025-06-10 | 平煤建工集团特殊凿井工程有限公司 | Jaw drill rod hydraulic hanging cap |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216240498U (en) * | 2021-11-12 | 2022-04-08 | 平煤建工集团特殊凿井工程有限公司 | Jaw-type drill rod disassembling and assembling pliers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375139A (en) * | 2012-04-13 | 2013-10-30 | 盐城特达钻采设备有限公司 | Linkage multi-jaw hydraulic power back-up wrench |
| CN206554829U (en) * | 2017-03-16 | 2017-10-13 | 中煤科工集团重庆研究院有限公司 | Drill rod conveying device for coal mine drilling machine |
| CN209145522U (en) * | 2018-09-19 | 2019-07-23 | 亨通海洋工程有限公司 | Manipulator is used in a kind of dismounting of borer drill rod |
| CN111720080A (en) * | 2020-06-08 | 2020-09-29 | 莱州市霸力石油机械有限公司 | Hydraulic back-up tong of casing power tong |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216240498U (en) * | 2021-11-12 | 2022-04-08 | 平煤建工集团特殊凿井工程有限公司 | Jaw-type drill rod disassembling and assembling pliers |
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