CN109372449B - Transfer device of power tongs - Google Patents
Transfer device of power tongs Download PDFInfo
- Publication number
- CN109372449B CN109372449B CN201811616333.1A CN201811616333A CN109372449B CN 109372449 B CN109372449 B CN 109372449B CN 201811616333 A CN201811616333 A CN 201811616333A CN 109372449 B CN109372449 B CN 109372449B
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- Prior art keywords
- cylinder
- sleeve
- inner cylinder
- piston
- air
- Prior art date
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- 239000011229 interlayer Substances 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 abstract description 6
- 238000005491 wire drawing Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 12
- 230000009471 action Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
Landscapes
- 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)
- Manipulator (AREA)
- Actuator (AREA)
Abstract
The invention discloses a transfer device of power tongs, which comprises a movable air cylinder, an air distribution box, a wire drawing box and an air control device, wherein one end of the movable air cylinder is connected with the tail part of the power tongs, the other end of the movable air cylinder is connected with a tail column, the air distribution box is arranged on the movable air cylinder and is respectively communicated with the head part and the tail part of the movable air cylinder through air pipes, the wire drawing box is arranged on the tail column, the wire drawing box is connected with the air distribution box, and the air control device is connected with the movable air cylinder and the air distribution box through pipelines. The power tongs transfer device with the buffering function, which is provided by the invention, has the advantages of reasonable and simple structure, reliable working performance and no need of manual control.
Description
Technical Field
The invention relates to the field of drill rod power tongs for petroleum and natural gas, in particular to a transfer device of a power tongs.
Background
When the power tongs are operated in an oil and gas mining field, the power tongs are required to be pushed to reach a working position by extending out of the transfer cylinder, and the power tongs are driven to return to an initial position by retracting back of the transfer cylinder after the operation is completed. The existing power tongs transfer cylinder has higher action speed when pushing the power tongs forward, can strike on the drill rod at higher speed, is easy to strike the drill rod or lead the drill rod to deviate from the correct position, and leads the piston rod of the cylinder to be unstably bent. When the transfer cylinder retracts to drive the power tongs to reset, the inner cylinder sleeve and the piston rod act sequentially, and the piston rod retracts to the inner cylinder sleeve after being completely retracted, so that the resetting speed is slower.
At present, operators control the air inlet and air interruption time of the air cylinder through visual inspection and operation experience, so that the impact force is reduced, but the effect is not ideal; the hydraulic cylinder is also adopted as a transfer executing mechanism, so that the hydraulic cylinder has the defects of too slow action, easy oil liquid leakage and environmental pollution.
Disclosure of Invention
The present invention aims to provide a transfer device for power tongs that solves one or more of the above-mentioned problems of the prior art.
The invention relates to a transfer device of power tongs, which comprises a movable air cylinder, an air distribution box, a wire drawing box and an air control device, wherein one end of the movable air cylinder is connected with the tail part of the power tongs, the other end of the movable air cylinder is connected with a tail column, the air distribution box is arranged on the movable air cylinder and is respectively communicated with the head part and the tail part of the movable air cylinder through air pipes, the wire drawing box is arranged on the tail column, the wire drawing box is connected with the air distribution box, and the air control device is connected with the movable air cylinder and the air distribution box through pipelines.
The power tongs transfer device with the buffering function, which is provided by the invention, has the advantages of reasonable and simple structure, reliable working performance and no need of manual control.
In some embodiments, the movable cylinder comprises a front cylinder cover, a rear cylinder cover, a piston part, an inner cylinder sleeve, a piston rod and an outer cylinder sleeve, wherein the front cylinder cover and the rear cylinder cover are fixedly connected with the front cylinder cover and the rear cylinder cover respectively, the piston part is arranged at the end part of the piston rod, the inner cylinder sleeve is arranged in the outer cylinder sleeve, and the piston rod moves in the inner cylinder sleeve. Reasonable and simple structure and reliable working performance.
In some embodiments, the piston portion includes a large piston and a small piston, the small piston is sleeved at the end of the piston rod, the large piston is sleeved outside the small piston, the small piston ring is abutted to the inner cylinder sleeve, and the large piston ring is abutted to between the outer cylinder sleeve and the inner cylinder sleeve. Through the arrangement of the large piston and the small piston, the cylinder can play a good buffering role in the moving process of the cylinder, and the moving speed of the cylinder is controllable.
In some embodiments, the small piston comprises a small piston base part and small piston base parts fixedly connected to two sides of the small piston base part, the small piston base part is in a convex shape, the small piston base part is abutted against the inner surface of the inner cylinder sleeve, and the small piston base part is connected with the large piston through a connecting ring. The cylinder buffer function is good.
In some embodiments, the large piston comprises a large piston base part and a large piston base part integrally fixedly connected with the large piston base part, the large piston base part is concave, the large piston base part is symmetrically arranged on the left side and the right side of the large piston base part by taking the central axis of the large piston base part as a reference, and the large piston base part is abutted against the inner surface of the outer cylinder sleeve. The cylinder buffer function is good.
In some embodiments, the inner cylinder sleeve comprises an inner cylinder inner sleeve and an inner cylinder outer sleeve, the two ends of the inner cylinder inner sleeve and the two ends of the inner cylinder outer sleeve are fixedly connected, an interlayer space is reserved between the inner cylinder inner sleeve and the inner cylinder outer sleeve, vent holes are respectively formed in the inner cylinder inner sleeve and the inner cylinder outer sleeve, and the inner cylinder inner sleeve vent holes, the inner cylinder outer sleeve vent holes and the interlayer space travel gas path channels are formed in the inner cylinder inner sleeve and the inner cylinder outer sleeve. The drill rod and the power tongs can be protected from being impacted, and the piston rod can not be unstable and bent and damaged.
In some embodiments, the gas distribution box comprises a tension spring, a switch slide bar, a pull wire, a one-way valve and a mechanical valve, wherein one end of the pull wire is connected with the switch slide bar, the other end of the pull wire is rolled up in the pull wire box, the other end of the switch slide bar is connected with the tension spring, the switch slide bar controls the mechanical valve to be opened and closed, and the mechanical valve is connected with the one-way valve.
In some embodiments, the pneumatic control device comprises a one-way valve, a mechanical valve, a three-position five-way valve and a pneumatic control reversing valve, wherein the one-way valve and the mechanical valve are connected with the movable cylinder through pipelines, and the three-position five-way valve and the pneumatic control reversing valve are connected with the movable cylinder and the gas distribution box through pipelines.
In some embodiments, the length of the pull wire in the pull wire box can be adjusted arbitrarily.
Drawings
Fig. 1 is a schematic view of a transfer device of a power tong according to an embodiment of the present invention;
fig. 2 is a schematic view of a moving cylinder of a transfer device of a power tong according to an embodiment of the present invention;
fig. 3 is a schematic view of a gas distribution box of a transfer device of a power tongs according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air control device of a transfer device of a power tong according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a transfer device of a power clamp comprises a movable cylinder 1, a gas distribution box 2, a wire box 3 and a pneumatic control device 4, wherein one end of the movable cylinder 1 is connected with the tail of the power clamp, the other end of the movable cylinder is connected with a tail column, the gas distribution box 2 is arranged on the movable cylinder 1 in a bolt or welding mode, the gas distribution box 2 is respectively communicated with the head and the tail of the movable cylinder 1 through a gas pipe, the wire box 3 is arranged on the tail column, the wire box 3 is connected with the gas distribution box 2, and the pneumatic control device 4 is connected with the movable cylinder 1 and the gas distribution box 2 through pipelines.
The power tongs transfer device with the buffering function, which is provided by the invention, has the advantages of reasonable and simple structure, reliable working performance and no need of manual control.
As shown in fig. 2, the mobile cylinder 1 comprises a front cylinder cover 11, a rear cylinder cover 12, a piston part 13, an inner cylinder sleeve 14, a piston rod 15 and an outer cylinder sleeve 16, wherein the front cylinder cover 11 and the rear cylinder cover 12 are fixedly connected with the front cylinder cover 16 and the rear cylinder cover 16 through bolts respectively, the piston part 13 is fixedly arranged at the end part of the piston rod 15 through axial bolts, the inner cylinder sleeve 14 is arranged in the outer cylinder sleeve 16, and the piston rod 15 moves in the inner cylinder sleeve 14.
The piston part 13 includes a large piston 131 and a small piston 132, the small piston 132 is sleeved on the end of the piston rod 15 and fixedly connected with the piston rod through a bolt, the large piston 131 is sleeved on the outer side of the small piston 132, the small piston 132 is annularly arranged and abutted against the inner cylinder sleeve 14, and the large piston 131 is annularly arranged and abutted against the outer cylinder sleeve 16 and the inner cylinder sleeve 14; through the arrangement of the large piston and the small piston, the cylinder can play a good buffering role in the moving process of the cylinder, and the moving speed of the cylinder is controllable.
The small piston 132 includes a small piston base 1321, and small piston seat portions 1322 fixed on two sides of the small piston base 1321 by welding or bolts, the small piston base 1321 is in a convex shape, the small piston base 1321 is abutted against the inner surface of the inner cylinder jacket 14, the small piston base 1321 moves in the inner cylinder jacket 14, the small piston seat portions 1322 are connected with the large piston 131 by the connecting ring 133, and the cylinder buffering function is good.
The large piston 131 includes a large piston base 1311 and a large piston base 1312 integrally fixed to the large piston base 1311, the large piston base 1311 is concave, the large piston base 1312 is symmetrically disposed on the left and right sides of the large piston base 1311 with the central axis of the large piston base 1311 as a reference, and the large piston base 1311 abuts against the inner surface of the outer cylinder jacket 16.
The inner cylinder sleeve 14 comprises an inner cylinder inner sleeve 141 and an inner cylinder outer sleeve 142, the two ends of the inner cylinder inner sleeve 141 and the inner cylinder outer sleeve 142 are fixedly connected, an interlayer space is reserved between the inner cylinder inner sleeve 141 and the inner cylinder outer sleeve 142, vent holes are respectively arranged on the inner cylinder inner sleeve 141 and the inner cylinder outer sleeve 142, and the vent holes of the inner cylinder inner sleeve 141, the vent holes of the inner cylinder outer sleeve 142 and the interlayer space travel gas path channel are respectively arranged on the inner cylinder inner sleeve 141 and the inner cylinder outer sleeve 142
As shown in fig. 3, the air distribution box 2 comprises a tension spring 21, a switch slide 22, a pull wire 23, a one-way valve 24 and a mechanical valve 25, one end of the pull wire 23 is connected with the switch slide 22, the other end is rolled up in the pull wire box 3, the other end of the switch slide 22 is connected with the tension spring 21, the switch slide 22 controls the opening and closing of the mechanical valve 25, the mechanical valve 25 is connected with the one-way valve 24, the length of the pull wire 23 in the pull wire box 3 can be arbitrarily adjusted, the pull wire 23 can be automatically released along with the extension of a transfer cylinder, the pull wire 23 can be automatically rolled up along with the retraction of the transfer cylinder, and the extension of the pull wire 23 can be arbitrarily adjusted
As shown in fig. 4, the air control device 4 comprises a check valve 24, a mechanical valve 25, a three-position five-way valve 26 and an air control reversing valve 27, wherein the check valve 24 and the mechanical valve 25 are connected with the movable cylinder 1 through pipelines, and the three-position five-way valve 26 and the air control reversing valve 27 are connected with the movable cylinder 1 and the air distribution box 2 through pipelines.
When the three-position five-ventilation valve 26 is used, the air is fed into the rodless cavity of the transfer cylinder, the power tongs move forwards, when the power tongs approach to the working position, the pull wire 23 pulls the switch slide bar 22 to trigger the mechanical valve 25, the compressed air closes the exhaust channel with the rod cavity and fills the rod cavity of the transfer cylinder, the piston rod 15 of the transfer cylinder can continue to extend because the action area of the rodless cavity is larger than that of the rod cavity, the power tongs can continue to move forwards, the compressed air in the rod cavity can be further compressed, and the pressure rises, so that the power tongs slow the advancing speed until stopping at the working position, and the impact force on a drill rod is reduced.
When the power tongs are reset, the three-position five-way valve 26 works in the right position, the transferring cylinder is provided with a rod cavity for air intake, compressed air acts on the large piston 131 and enters the inner cavity of the inner cylinder inner sleeve 141 through the inner cavity of the outer cylinder sleeve 16, the inner cylinder outer sleeve 142 and the inner cylinder inner sleeve 141, acts on the small piston 132, the transferring cylinder large piston 131 and the small piston 132 retract together to drive the power tongs to reset quickly, the switch slide bar 22 resets under the action of the tension spring 21, and the pull wire 23 is automatically rolled up into the pull wire box 3.
The foregoing is merely a preferred form of the invention, and it should be noted that several similar variations and modifications could be made by those skilled in the art without departing from the inventive concept, which are also considered to be within the scope of the invention.
Claims (3)
1. The transfer device of the power tongs is characterized by comprising a movable air cylinder (1), an air distribution box (2), a pull box (3) and an air control device (4), wherein one end of the movable air cylinder (1) is connected with the tail part of the power tongs, the other end of the movable air cylinder is connected with a tail column, the air distribution box (2) is arranged on the movable air cylinder (1), the air distribution box (2) is respectively communicated with the head part and the tail part of the movable air cylinder (1) through air pipes, the pull box (3) is arranged on the tail column, the pull box (3) is connected with the air distribution box (2), and the air control device (4) is connected with the movable air cylinder (1) and the air distribution box (2) through pipelines;
the movable cylinder (1) comprises a front cylinder cover (11), a rear cylinder cover (12), a piston part (13), an inner cylinder sleeve (14), a piston rod (15) and an outer cylinder sleeve (16), wherein the front cylinder cover (11) and the rear cylinder cover (12) are fixedly connected with the front cylinder sleeve (16) and the rear cylinder sleeve (16) respectively, the piston part (13) is arranged at the end part of the piston rod (15), the inner cylinder sleeve (14) is arranged in the outer cylinder sleeve (16), and the piston rod (15) moves in the inner cylinder sleeve (14);
the piston part (13) comprises a large piston (131) and a small piston (132), the small piston (132) is sleeved at the end part of the piston rod (15), the large piston (131) is sleeved at the outer side of the small piston (132), the small piston (132) is annularly arranged and abutted to the inner cylinder sleeve (14), and the large piston (131) is annularly arranged and abutted to the space between the outer cylinder sleeve (16) and the inner cylinder sleeve (14);
the small piston (132) comprises a small piston base part (1321) and small piston base part (1322) fixedly connected to two sides of the small piston base part (1321), the small piston base part (1321) is in a convex shape, the small piston base part (1321) is abutted to the inner surface of the inner cylinder sleeve (14), and the small piston base part (1322) is connected with the large piston (131) through a connecting ring (133);
the large piston (131) comprises a large piston base (1311) and a large piston base part (1312) integrally fixedly connected with the large piston base (1311), the large piston base (1311) is concave, the large piston base part (1312) is symmetrically arranged on the left side and the right side of the large piston base (1311) by taking the central axis of the large piston base (1311) as a reference, and the large piston base (1311) is abutted against the inner surface of the outer cylinder sleeve (16);
the inner cylinder sleeve (14) comprises an inner cylinder inner sleeve (141) and an inner cylinder outer sleeve (142), the two ends of the inner cylinder inner sleeve (141) and the two ends of the inner cylinder outer sleeve (142) are fixedly connected, an interlayer space is reserved between the inner cylinder inner sleeve (141) and the inner cylinder outer sleeve (142), vent holes are respectively formed in the inner cylinder inner sleeve (141) and the inner cylinder outer sleeve (142), and the inner cylinder inner sleeve (141) vent holes, the inner cylinder outer sleeve (142) vent holes and interlayer space travel gas path channels;
the valve box (2) comprises a tension spring (21), a switch slide bar (22), a pull wire (23), a one-way valve (24) and a mechanical valve (25), wherein one end of the pull wire (23) is connected with the switch slide bar (22), the other end of the pull wire is rolled up in the pull wire box (3), the tension spring (21) is connected with the other end of the switch slide bar (22), the switch slide bar (22) controls the mechanical valve (25) to be opened and closed, and the mechanical valve (25) is connected with the one-way valve (24).
2. The transfer device of power tongs as claimed in claim 1, wherein the pneumatic control device (4) comprises a one-way valve (24), a mechanical valve (25), a three-position five-way valve (26) and a pneumatic control reversing valve (27), the one-way valve (24) and the mechanical valve (25) are connected with the movable cylinder (1) through pipelines, and the three-position five-way valve (26) and the pneumatic control reversing valve (27) are connected with the movable cylinder (1) and the gas distribution box (2) through pipelines.
3. The transfer device of power tongs as in claim 2, wherein the length of the wires (23) within the pull box (3) can be adjusted at will.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811616333.1A CN109372449B (en) | 2018-12-27 | 2018-12-27 | Transfer device of power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811616333.1A CN109372449B (en) | 2018-12-27 | 2018-12-27 | Transfer device of power tongs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372449A CN109372449A (en) | 2019-02-22 |
| CN109372449B true CN109372449B (en) | 2023-12-26 |
Family
ID=65372149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811616333.1A Active CN109372449B (en) | 2018-12-27 | 2018-12-27 | Transfer device of power tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372449B (en) |
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| GB538512A (en) * | 1939-12-07 | 1941-08-07 | Aluminum Co Of America | Improvements in or relating to molds for casting purposes |
| CH299786A (en) * | 1950-12-23 | 1954-06-30 | Pour Materiel De Fonderie Soc | Automatic piston molding and demoulding machine. |
| US4245817A (en) * | 1979-08-27 | 1981-01-20 | Peoples Herman R | Pneumatic staple remover |
| US6318214B1 (en) * | 1998-12-01 | 2001-11-20 | David A. Buck | Power tong positioning apparatus |
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| GB0408915D0 (en) * | 2003-04-23 | 2004-05-26 | Bangert Daniel S | Improved tong piston and cylinder assembly |
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| CN109372449A (en) | 2019-02-22 |
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