CN110836098A - Jaw resetting mechanism of open type power tongs - Google Patents
Jaw resetting mechanism of open type power tongs Download PDFInfo
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- CN110836098A CN110836098A CN201911250531.5A CN201911250531A CN110836098A CN 110836098 A CN110836098 A CN 110836098A CN 201911250531 A CN201911250531 A CN 201911250531A CN 110836098 A CN110836098 A CN 110836098A
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- connecting rod
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- reset
- hinge pin
- cylinder
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- 230000007246 mechanism Effects 0.000 title claims abstract description 65
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated
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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)
- Braking Arrangements (AREA)
Abstract
The invention provides a tong head resetting mechanism of open type power tongs, which comprises a swing mechanism, a lifting mechanism and a braking mechanism, wherein the lifting mechanism is arranged on a tong body of the power tongs, a brake disc and a floating body on the lifting mechanism and the power tongs are connected with the swing mechanism, and the brake disc and a brake band fixing column on the power tongs are connected with the braking mechanism. The invention has the advantages of convenient switching and resetting and reduced abrasion of the brake belt.
Description
Technical Field
The invention relates to a tong head resetting mechanism of power tongs, in particular to a tong head resetting mechanism of open type power tongs for petroleum and natural gas mine operation.
Background
When a common cam clamping type tong head clamps a pipe column, a brake disc and a floating body can rotate relatively for a certain angle, so that the relative position of the brake disc and the floating body is changed; when the tong head is going to make the next make-up and break-out action, the brake disk and the floating body must be restored to the initial opening alignment position. Therefore, the clamp heads are provided with the reset mechanisms, and usually, the reset mechanisms are switched by inserting and dialing the positioning pins or rotating the opening rotating sleeve and the like, so that the clamp has the defect that the clamp needs to be manually operated to be close to the clamp, and the automation cannot be realized. The brake disc and the floating body rotate relatively, a brake band needs to be arranged outside the brake disc, the brake band of the common power tongs is directly and tightly embraced on the outer circle of the brake disc, the output torque of the tong head of the power tongs is consumed, and the brake band is quickly abraded.
Disclosure of Invention
The invention aims to provide a tong head resetting mechanism of an open type power tong, which solves the technical problems that the existing switching resetting is inconvenient and the rapid abrasion is generated during braking.
The invention provides a tong head resetting mechanism of open type power tongs, which comprises a swing mechanism, a lifting mechanism and a braking mechanism, wherein the lifting mechanism is arranged on a tong body of the power tongs, a brake disc and a floating body on the lifting mechanism and the power tongs are connected with the swing mechanism, and the brake disc and a brake band fixing column on the power tongs are connected with the braking mechanism.
In some embodiments, the lifting mechanism comprises a lifting carriage, a lifting cylinder and a guide support, the guide support is fixedly mounted on a caliper body of the power tong, a sliding groove is formed in the guide support, the bottom of the lifting carriage is embedded in the sliding groove, the lifting carriage and the guide support are both connected with the lifting cylinder, and the swing mechanism is connected with the lifting carriage.
In certain embodiments, the lift cylinder connects the lift carriage and the guide bracket together by an upper hinge pin and a lower hinge pin, and the lift carriage moves up and down along the sliding channel by the lift cylinder.
In some embodiments, the swing mechanism comprises a swing cylinder, a slotted rotating sleeve, a reset rotating sleeve and a reset pin, the swing cylinder is fixed on the lifting sliding frame, the slotted rotating sleeve is fixed at the shaft end of the swing cylinder, the bottom of the slotted rotating sleeve is provided with a groove body with a downward opening corresponding to the reset rotating sleeve, the reset rotating sleeve is movably installed on a fixed brake disc, the reset pin is fixed on a floating body, and the upper end of the reset pin is embedded in a lacking edge sleeve at the lower part of the reset rotating sleeve.
In certain embodiments, the scalloped sleeve is semi-circular in shape.
In some embodiments, the brake mechanism includes a left brake band, a right brake band, a left connecting rod, a right connecting rod, and a pneumatic adjusting cylinder, the left brake band and the right brake band are respectively connected with one end of the left connecting rod and one end of the right connecting rod, the other end of the left connecting rod and the other end of the right connecting rod are both connected with the pneumatic adjusting cylinder, the middle parts of the left connecting rod and the right connecting rod are mounted on the brake band fixing column, and the left brake band and the right brake band are enclosed on the outer circle of the brake disc.
In certain embodiments, the brake mechanism further comprises a first hinge pin, a second hinge pin, a third hinge pin, and a fourth hinge pin, the left brake band is hinged to the left link rod via the first hinge pin, the right brake band is hinged to the right link rod via the fourth hinge pin, the pneumatic adjustment barrel is hinged to the left link rod via the second hinge pin, and the pneumatic adjustment barrel is hinged to the right link rod via the third hinge pin.
The jaw resetting mechanism of the open type power tong has the advantages that: the automatic control tong head resetting mechanism has the advantages of reasonable structure, convenience in switching and resetting, effective reduction of brake belt abrasion, and realization of automatic control.
Drawings
FIG. 1 is a schematic structural diagram of a bit returning mechanism of an open-ended power tong according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a swing mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a lifting mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a brake mechanism according to an embodiment of the present invention.
Detailed Description
As shown in figure 1, the invention provides a tong head resetting mechanism of open type power tongs, which comprises a rotating mechanism 5, a lifting mechanism 6 and a braking mechanism 3, wherein the lifting mechanism 6 is arranged on a tong body of the power tongs, the lifting mechanism 6, a brake disc 2 and a floating body 4 on the power tongs are all connected with the rotating mechanism 5, and the brake disc 2 and a brake band fixing column 7 on the power tongs are all connected with the braking mechanism 3.
As shown in fig. 3, the lifting mechanism 6 includes a lifting carriage 22, a lifting cylinder 23, and a guide bracket 24, the guide bracket 24 is fixedly mounted on the body of the power tong, the guide bracket 24 is provided with a sliding groove, the bottom of the lifting carriage 22 is embedded in the sliding groove, the lifting cylinder 23 connects the lifting carriage 22 and the guide bracket 24 together through an upper hinge pin 21 and a lower hinge pin 25, the swing mechanism 5 is connected with the lifting carriage 22, and the lifting carriage 22 moves up and down along the sliding groove under the action of the lifting cylinder 23.
Wherein, as shown in fig. 2, the revolving mechanism 5 comprises a revolving cylinder 31, a slotted revolving sleeve 32, a reset revolving sleeve 33 and a reset pin 34, the revolving cylinder 31 is fixed on the lifting carriage 22, the slotted revolving sleeve 32 is fixed (can be fixed by welding technique or can be fixed by screws and the like) at the shaft end of the revolving cylinder 31 (motor), the slotted revolving sleeve 32 revolves with the revolving cylinder 31 and moves up and down integrally with the lifting carriage 22, the shape and the position of the top of the reset revolving sleeve 33 correspond to the shape and the position of a groove body with a downward opening at the bottom of the slotted revolving sleeve 32, the reset revolving sleeve 33 is movably mounted on the fixed brake disc 2 (the periphery of the reset revolving sleeve 33 can be provided with a circle of auxiliary slide blocks, the brake disc 2 is connected with a slide seat with a through hole by screws, the wall of the through hole is provided with a slide groove, then the reset revolving sleeve 33 is embedded in the through hole, and make supplementary slider inlay in the sliding tray, make supplementary slider can rotate along the sliding tray in the sliding tray, thereby form movable mounting's purpose), can realize self rotation and rotate along with brake disc 2 through gyration cylinder 31, the bottom of restoring pin 34 inserts and forms fixed connection in the floating body 4, restoring pin 34 rotates along with floating body 4, the upper end of restoring pin 34 inlays in the semicircular edge-lacking cover that restores to the throne and overlap 33 lower part, the edge-lacking cover can restrict the direction of rotation of restoring pin 34, make restoring pin 34 blocked by the edge-lacking cover on one side, another side restoring pin 34 then can freely rotate.
As shown in fig. 4, the brake mechanism 3 includes a left brake band 11, a right brake band 19, a left connecting rod 13, a right connecting rod 17, a pneumatic adjusting cylinder 15, a first hinge pin 12, a second hinge pin 14, a third hinge pin 16 and a fourth hinge pin 18, the left brake band 11 is hinged to one end of the left connecting rod 13 through the first hinge pin 12, the right brake band 19 is hinged to one end of the right connecting rod 17 through the fourth hinge pin 18, the pneumatic adjusting cylinder 15 is hinged to the other end of the left connecting rod 13 through the second hinge pin 14, the pneumatic adjusting cylinder 15 is hinged to the other end of the right connecting rod 17 through the third hinge pin 16, the middle portions of the left and right connecting rods 13 and 17 are hinged to the brake band fixing post 7, the left and right brake bands 11 and 19 surround the outer circle of the brake disc 2, the pneumatic adjusting cylinder 15 extends when air is supplied, the left and right brake bands 11 and 19 are driven by the left and right connecting rods 13 and 17 to tightly hold the brake disc 2, braking the brake disc 2; when the pneumatic adjusting cylinder 15 stops supplying air, the spring in the pneumatic adjusting cylinder 15 shortens the pneumatic adjusting cylinder 15, and the left connecting rod 13 and the right connecting rod 17 drive the left braking belt 11 and the right braking belt 19 to loosen the brake disc 2.
When the power tong is ready for the buckling operation in the buckling operation process, the lifting cylinder 23 contracts to enable the rotary cylinder 31 to descend, then the top of the reset rotary sleeve 33 is embedded into the groove body at the bottom of the slotted rotary sleeve 32 to form meshing, the rotary cylinder 31 rotates to enable the reset rotary sleeve 33 to be in a buckling position, then the lifting cylinder 23 ascends to enable the rotary cylinder 31 to rise again along with the lifting sliding frame 22, and the rotating space of the floating body 4 and the brake disc 2 is opened. Then the pneumatic adjusting cylinder 15 supplies air, a piston rod in the adjusting cylinder 15 extends out to drive the left connecting rod 13 and the right connecting rod 17 to enable the left brake band 11 and the right brake band 19 to tightly hold the brake disc 2, at the moment, the floating body 4 rotates clockwise, the brake disc 2 is braked by the left brake band 11 and the right brake band 19, the floating body 4 and the brake disc 2 are staggered, a jaw plate climbs, after a drill rod is clamped, the pneumatic adjusting cylinder 15 stops supplying air, the left brake band 11 and the right brake band 19 are loosened, so that the floating body 4 drives the brake disc 2 to rotate clockwise, at the moment, the left brake band 11 and the right brake band 19 are separated from the brake disc 2, and the brake disc is not worn. After the action of the upper buckle of the power tong is completed, the brake disc 2 and the floating body 4 are staggered in opening, the pneumatic adjusting cylinder 15 is used for re-air inlet, the brake disc 2 is braked, the floating body 4 rotates anticlockwise in the opposite direction, the reset pin 34 on the floating body 4 touches the semicircular notch of the reset rotating sleeve 33 and then drives the brake disc 2 to rotate anticlockwise together, the floating body 4 and the brake disc 2 are aligned in opening, and the tong head is reset.
When the power tong is ready for the action of shackle in the shackle operation process, the lifting cylinder 23 contracts to enable the rotary cylinder 31 to descend, then the top of the resetting rotary sleeve 33 is embedded into the groove body at the bottom of the slotted rotary sleeve 32 to form meshing, the rotary cylinder 31 rotates 180 degrees to enable the resetting rotary sleeve 32 to be in a shackle position, then the lifting cylinder 23 extends out to enable the rotary cylinder 31 to rise again along with the lifting sliding frame 22, and the rotating space of the floating body 4 and the brake disc 2 is opened. Then the pneumatic adjusting cylinder 15 supplies air, a piston rod in the adjusting cylinder 15 extends out to drive the left connecting rod 13 and the right connecting rod 17 to enable the left brake band 11 and the right brake band 19 to tightly hold the brake disc 2, at the moment, the floating body 4 rotates anticlockwise, the brake disc 2 is braked by the left brake band 11 and the right brake band 19, the floating body 4 and the brake disc 2 are staggered, a jaw plate climbs, after a drill rod is clamped, the pneumatic adjusting cylinder 15 stops supplying air, the left brake band 11 and the right brake band 19 are loosened, so that the floating body 4 drives the brake disc 2 to rotate together, at the moment, the left brake band 11 and the right brake band 19 are separated from the brake disc 2, and the brake disc is not. After the action of power tong shackle is accomplished, brake disc 2 and the 4 openings of floating body misplace this moment, and pneumatic adjusting cylinder 15 admits air again, and brake disc 2 is braked, and floating body 4 makes clockwise rotation in the opposite direction, and reset pin 34 on floating body 4 touches and resets and changes cover 33 semicircle after lacking the limit and drive brake disc 2 clockwise gyration together, and floating body 4 and brake disc 2 openings are adjusted well this moment, and the binding clip resets.
The foregoing is only a preferred form of the invention and it should be noted that several similar variations and modifications could be made by one skilled in the art without departing from the inventive concept and these should also be considered within the scope of the invention.
Claims (7)
1. The tong head resetting mechanism of the open type power tong is characterized by comprising a rotating mechanism (5), a lifting mechanism (6) and a braking mechanism (3), wherein the lifting mechanism (6) is installed on a tong body of the power tong, a braking disc (2) and a floating body (4) on the lifting mechanism (6) and the power tong are connected with the rotating mechanism (5), and the braking disc (2) and a braking belt fixing column (7) on the power tong are connected with the braking mechanism (3).
2. The bit resetting mechanism of open type power tongs according to claim 1, wherein the lifting mechanism (6) comprises a lifting carriage (22), a lifting cylinder (23) and a guide bracket (24), the guide bracket (24) is fixedly installed on the tongs body of the power tongs, a sliding groove is arranged on the guide bracket (24), the bottom of the lifting carriage (22) is embedded in the sliding groove, the lifting carriage (22) and the guide bracket (24) are both connected with the lifting cylinder (23), and the swing mechanism (5) is connected with the lifting carriage (22).
3. The bit returning mechanism of an open type power tong according to claim 2, wherein the lifting cylinder (23) connects the lifting carriage (22) and the guide bracket (24) together by means of an upper hinge pin (21) and a lower hinge pin (25), and the lifting carriage (22) is moved up and down along the sliding groove by the lifting cylinder (23).
4. The jaw reset mechanism of open type power tongs according to claim 2, wherein the swing mechanism (5) comprises a swing cylinder (31), a slotted rotating sleeve (32), a reset rotating sleeve (33) and a reset pin (34), the swing cylinder (31) is fixed on the lifting sliding frame (22), the slotted rotating sleeve (32) is fixed at the shaft end of the swing cylinder (31), the bottom of the slotted rotating sleeve (32) is provided with a groove body with a downward opening corresponding to the reset rotating sleeve (33), the reset rotating sleeve (33) is movably mounted on the fixed brake disc (2), the reset pin (34) is fixed on the floating body (4), and the upper end of the reset pin (34) is embedded in the lacking edge sleeve at the lower part of the reset rotating sleeve (33).
5. The bit reset mechanism of an open-ended power tong according to claim 4, wherein said undercut-shaped sleeve is semi-circular.
6. The bit resetting mechanism of an open type power tong according to claim 1, characterized in that the braking mechanism (3) comprises a left braking band (11), a right braking band (19), a left connecting rod (13), a right connecting rod (17) and a pneumatic adjusting cylinder (15), the left braking band (11) and the right braking band (19) are respectively connected with one end of the left connecting rod (13) and one end of the right connecting rod (17), the other end of the left connecting rod (13) and the other end of the right connecting rod (17) are both connected with the pneumatic adjusting cylinder (15), the middle parts of the left connecting rod (13) and the right connecting rod (17) are mounted on the braking band fixing post (7), and the left braking band (11) and the right braking band (19) are enclosed on the outer circle of the brake disc (2).
7. The tong head reset mechanism of open-type power tongs according to claim 6, wherein the brake mechanism (3) further comprises a first hinge pin (12), a second hinge pin (14), a third hinge pin (16), and a fourth hinge pin (18), the left brake band (11) is hinged to the left connecting rod (13) through the first hinge pin (12), the right brake band (19) is hinged to the right connecting rod (17) through the fourth hinge pin (18), the pneumatic adjustment cylinder (15) is hinged to the left connecting rod (13) through the second hinge pin (14), and the pneumatic adjustment cylinder (15) is hinged to the right connecting rod (17) through the third hinge pin (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250531.5A CN110836098A (en) | 2019-12-09 | 2019-12-09 | Jaw resetting mechanism of open type power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250531.5A CN110836098A (en) | 2019-12-09 | 2019-12-09 | Jaw resetting mechanism of open type power tongs |
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| Publication Number | Publication Date |
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| CN110836098A true CN110836098A (en) | 2020-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911250531.5A Pending CN110836098A (en) | 2019-12-09 | 2019-12-09 | Jaw resetting mechanism of open type power tongs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577171A (en) * | 2020-05-11 | 2020-08-25 | 如东前进石油机械制造有限公司 | Jaw plate frame braking and opening aligning mechanism for iron roughneck |
-
2019
- 2019-12-09 CN CN201911250531.5A patent/CN110836098A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577171A (en) * | 2020-05-11 | 2020-08-25 | 如东前进石油机械制造有限公司 | Jaw plate frame braking and opening aligning mechanism for iron roughneck |
| CN111577171B (en) * | 2020-05-11 | 2022-04-15 | 如东前进石油机械制造有限公司 | Jaw plate frame braking and opening aligning mechanism for iron roughneck |
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