CN201546647U - Micro-damaging screw-on machine back-up tong headclamping mechanism - Google Patents
Micro-damaging screw-on machine back-up tong headclamping mechanism Download PDFInfo
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- CN201546647U CN201546647U CN2009202575436U CN200920257543U CN201546647U CN 201546647 U CN201546647 U CN 201546647U CN 2009202575436 U CN2009202575436 U CN 2009202575436U CN 200920257543 U CN200920257543 U CN 200920257543U CN 201546647 U CN201546647 U CN 201546647U
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- tong head
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- jaw
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Abstract
A micro-damaging screw-on machine back-up tong head clamping mechanism comprises a back-up tong head body, a lower jaw plate frame, an upper jaw plate frame, jaw plates, a tooth block, a roller, a roller shaft, a return spring, a fixed shaft, a fixed shaft sleeve, a back-up tong head gear ring, a motor gear, a hydraulic motor and the like. The micro-damaging screw-on machine back-up tong head clamping mechanism is structurally characterized in that three or more jaw plates are arranged in the back-up tong head body, and the roller shaft, the roller, the tooth block and the return spring are mounted on each jaw plate, a working circular arc is arranged on the inner curved surface of the back-up tong head body, and the lower jaw plate frame, the upper jaw plate frame and the back-up tong head gear ring are connected into a whole by the fixed shaft, the fixed shaft sleeve and screws. The mechanism adopts a simple and reliable inner curved surface roller climbing multi-jaw plate clamping mechanism, the tooth block is made of anti-abrasion materials, the contact area between the tooth block and a pipe column is increased, and the mechanism plays the function of clamping the pipe column and not damaging the pipe column, and the economic benefit of the mechanism is observable.
Description
Technical field
The utility model relates to the petroleum machinery Power Tong, especially for the thread screw on and-off machine back-up tong of going up, unload the casing adapter screw thread in the tubing string operation process of oil field.
Background technology
Thread screw on and-off machine is mainly used in oilfield and goes up oil discharge pipe and the operation of sleeve pipe screw thread fast, mainly is made up of main pincers and back-up tong, and back-up tong clamps string collar, and the tight tubing string rotation of main clamp is finished, the shackle operation.Existing thread screw on and-off machine generally adopts the positive camber block teeth to realize clamping continuously, contact with tubing string is linear contact, and block teeth all have harder hardness and sharp cusp, make block teeth can cut tubing string, guarantee reliable clamping, after each the clamping, all can sting out dental impression like this at the external surface of tubing string with certain depth.After repeating to clamp, damage can appear in the tubing string surface, and the corrosion of damage after-acceleration tubing string can cause tubing string to lose efficacy when serious, strengthened oil field operation workload and cost widely.In recent years, the tubing string of nonmetals such as oil field upper glass steel occurred, and all needed not damage tubing string.
What adopt usually on the open-type Power Tong is the inner camber and climbing roller clamp mechanism, through using proof for many years, simple in structure, reliable clamping owing to binding clip is that common employing of opening reason is two jaw symmetrical structures, can not adopt many jaws structure, it is little to clamp the containing area, and tubing string is had damage.And thread screw on and-off machine normally adopts the structure of remaining silent, and just can adopt many jaws, contain the area clamping greatly, and advantage is a reliable clamping, and is simple in structure, and can realize tubing string not damaged or micro-damage operation.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism is provided, reduced in the tubing string screw thread operation of oil field the damage of tubing string, and simple and reliable for structure.
Technical solutions of the utility model provide a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism, and it is made up of back-up tong head main body, lower jaw grillage, maxilla grillage, jaw, block teeth, roller, roller shaft, back-moving spring, fixed axis, fixed hub, back-up tong head gear ring, motor gear and hydraulic motor etc.Be provided with the work circular arc on the negative camber of back-up tong head main body, the work circular arc is directly to process on the back-up tong head main body, or on the ramp that is provided with in addition.Be provided with the jaw more than three or three in the back-up tong head main body, roller shaft, roller, block teeth and back-moving spring are housed on the jaw, roller can rotate around roller shaft.The inboard of block teeth is a circular arc, and circular arc contains with the tubing string external diameter that is clamped, and total containing angle of several block teeth is greater than 270 degree; The material of block teeth is non-metal-polymer high-abrasive materials, or the combination of sheet metal and nonmetal high molecular abrasion-proof material, or wear resistant alloy material.Lower jaw grillage, maxilla grillage and back-up tong head gear ring connect into integral body by fixed axis, fixed hub and screw, are contained in the back-up tong head main body; Roller shaft two axle head is a square, is contained in the slotted eye up and down that is provided with on lower jaw grillage and the maxilla grillage to move forward and backward.Back-moving spring one end is fixed on the jaw, and an end is fixed on the lower jaw grillage.Motor gear is contained on the hydraulic motor output shaft, meshes with back-up tong head gear ring.When last button or shackle operation, back-up tong begins action earlier, the hydraulic motor oil-feed begins to rotate, and drives motor gear and rotates, and orders about back-up tong head gear ring band and lower jaw grillage and maxilla grillage and buckle or the shackle direction is rotated along last, force the roller on the jaw to go up a slope along the work circular arc on the back-up tong head main body, the roller shaft that promotes on the jaw moves along the slotted eye on lower jaw grillage and the maxilla grillage, makes block teeth clamp tubing string, and back-up tong keeps clamped condition, main then pincers begin to clamp tubing string, button or shackle action in the continuation.After last button or shackle finish, the reverse oil-feed of hydraulic motor, order about back-up tong head gear ring band and lower jaw grillage and maxilla grillage backward rotation, roller on the jaw is fallen off along the work circular arc on the back-up tong head main body, get back to the home position, the back-moving spring drive jaw that is arranged on the jaw resets, and one-stop operation finishes.Block teeth are to be made by high-abrasive material, and very big containing area is arranged, and tooth is fine and closely woven serration, and frictionally or micro-indentations clamp tubing string, can not be cut into the tubing string surface, also just can not damage tubing string.It is characterized in that: be provided with the jaw more than three or three in the back-up tong head main body, roller shaft, roller, block teeth and back-moving spring are housed on the jaw; The negative camber of back-up tong head main body is provided with the work circular arc; Lower jaw grillage, maxilla grillage and back-up tong head gear ring connect into integral body by fixed axis, fixed hub and screw.The inboard of block teeth is a circular arc, and circular arc contains with the tubing string external diameter that is clamped, and total containing angle of several block teeth is greater than 270 degree.The material of block teeth is non-metal-polymer high-abrasive materials, or the combination of sheet metal and nonmetal high molecular abrasion-proof material, or wear resistant alloy material.Roller shaft two axle head is a square, is contained in the slotted eye up and down that is provided with on lower jaw grillage and the maxilla grillage to move forward and backward.Work circular arc on the back-up tong head main body negative camber is directly to process on the back-up tong head main body, or on the ramp that is provided with in addition.Back-moving spring one end is fixed on the jaw, and an end is fixed on the lower jaw grillage.
The beneficial effects of the utility model provide a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism, adopt simple, reliable many jaws of inner camber and climbing roller clamp mechanism, block teeth are to be made by high-abrasive material, and the contact area of increasing and tubing string, play the effect that clamps tubing string and do not damage tubing string, its economic benefit is considerable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is front view of the present utility model (partly cuing open).
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is that the B-B of Fig. 1 is to partial sectional view.
Among the figure: 1. lower jaw grillage, 2. back-up tong head main body, 3. jaw, 4. roller shaft, 5. bearing spacer, 6. needle bearing, 7. roller, 8. block teeth, 9. maxilla grillage, 10. screw, 11. blocks, 12. fixed hubs, 13. fixed axis, 14. screws, 15. back-up tong head gear rings, 16. motor seat, 17. motor gears, 18. hydraulic motors, 19. bearing pins, 20. back-moving springs, 21. work circular arcs.
The specific embodiment
In Fig. 1,2, a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism is made up of lower jaw grillage 1, back-up tong head main body 2, jaw 3, roller shaft 4, bearing spacer 5, needle bearing 6, roller 7, block teeth 8, maxilla grillage 9, screw 10, block 11, fixed hub 12, fixed axis 13, screw 14, back-up tong head gear ring 15, motor seat 16, motor gear 17, hydraulic motor 18, bearing pin 19, back-moving spring 20 and work circular arc 21 etc.Be provided with work circular arc 21 on the negative camber of back-up tong head main body 2, work circular arc 21 is directly to process on back-up tong head main body 2, or on the ramp that is provided with in addition.In back-up tong head main body 2, be provided with the jaw 3 more than three or three, roller shaft 4, roller 7, block teeth 8 and back-moving spring 20 are housed on the jaw 3.Roller shaft 4 is contained in the axis hole of jaw 3, and roller 7 strings are equipped with needle bearing 6 and bearing spacer 5 in the roller 7 on roller shaft 4, and roller 7 can be around roller shaft 4 rotations.Block teeth 8 are inserted in the slot on the jaw 3, and are fixing by block 11 and screw 10 up and down; The inboard of block teeth 8 is a circular arc, and circular arc contains with the tubing string external diameter that is clamped, and total containing angle of several block teeth 8 is greater than 270 degree; The material of block teeth 8 is non-metal-polymer high-abrasive materials, or the combination of sheet metal and nonmetal high molecular abrasion-proof material, or wear resistant alloy material.Lower jaw grillage 1, maxilla grillage 9 and back-up tong head gear ring 15 connect into integral body by fixed axis 13, fixed hub 12 and screw 14, are contained in the back-up tong head main body 2.Back-moving spring 20 1 ends are fixed on the jaw 3, and an end is fixed on the lower jaw grillage 1.Back-up tong head gear ring 15 and motor gear 17 engagements, motor gear 17 is contained on the output shaft of hydraulic motor 18, and hydraulic motor 18 is fixed on the back-up tong head main body 2 by motor seat 16.
In Fig. 3, roller shaft 4 two axle heads are processed into square, are contained in the slotted eye up and down that is provided with on lower jaw grillage 1 and the maxilla grillage 9 to move forward and backward.
When last button or shackle operation, back-up tong begins action earlier, hydraulic motor 18 oil-feeds begin to rotate, driving motor gear 17 rotates, ordering about back-up tong head gear ring 15 is being with lower jaw grillage 1 and maxilla grillage 9 to buckle or the rotation of shackle direction along last, force the roller 7 on the jaw 3 to go up a slope along the work circular arc on the back-up tong head main body 2 21, the roller shaft 4 that promotes on the jaw 3 moves along the slotted eye on lower jaw grillage 1 and the maxilla grillage 9, make block teeth 8 clamp tubing string, back-up tong keeps clamped condition, main then pincers begin to clamp tubing string, button or shackle action in the continuation.After last button or shackle finish, hydraulic motor 18 reverse oil-feeds, order about back-up tong head gear ring 15 and be with lower jaw grillage 1 and maxilla grillage 9 backward rotation, roller 7 on the jaw 3 is fallen off along the work circular arc 21 on the back-up tong head main body 2, get back to the home position, the back-moving spring 20 drive jaws 3 that are arranged on the jaw 3 reset, and one-stop operation finishes.Block teeth 8 are to be made by high-abrasive material, and very big containing area is arranged, and tooth is fine and closely woven serration, and frictionally or micro-indentations clamp tubing string, can not be cut into the tubing string surface, also just can not damage tubing string.
Claims (6)
1. micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism, form by back-up tong head main body, lower jaw grillage, maxilla grillage, jaw, block teeth, roller, roller shaft, back-moving spring, fixed axis, fixed hub, back-up tong head gear ring, motor gear and hydraulic motor, it is characterized in that: be provided with the jaw more than three or three in the back-up tong head main body, roller shaft, roller, block teeth and back-moving spring are housed on the jaw; The negative camber of back-up tong head main body is provided with the work circular arc; Lower jaw grillage, maxilla grillage and back-up tong head gear ring connect into integral body by fixed axis, fixed hub and screw.
2. a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism as claimed in claim 1, it is characterized in that: the inboard of block teeth is a circular arc, and circular arc contains with the tubing string external diameter that is clamped, and total containing angle of several block teeth is greater than 270 degree.
3. a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism as claimed in claim 1 or 2, it is characterized in that: the material of block teeth is non-metal-polymer high-abrasive materials, or the combination of sheet metal and nonmetal high molecular abrasion-proof material, or wear resistant alloy material.
4. a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism as claimed in claim 1, it is characterized in that: roller shaft two axle head is a square, is contained in the slotted eye up and down that is provided with on lower jaw grillage and the maxilla grillage and can moves forward and backward.
5. a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism as claimed in claim 1 is characterized in that: the work circular arc on the back-up tong head main body negative camber is directly to process on the back-up tong head main body, or on the ramp that is provided with in addition.
6. a kind of micro-damage thread screw on and-off machine back-up tong binding clip clamp mechanism as claimed in claim 1, it is characterized in that: back-moving spring one end is fixed on the jaw, and an end is fixed on the lower jaw grillage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202575436U CN201546647U (en) | 2009-11-12 | 2009-11-12 | Micro-damaging screw-on machine back-up tong headclamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202575436U CN201546647U (en) | 2009-11-12 | 2009-11-12 | Micro-damaging screw-on machine back-up tong headclamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546647U true CN201546647U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202575436U Expired - Lifetime CN201546647U (en) | 2009-11-12 | 2009-11-12 | Micro-damaging screw-on machine back-up tong headclamping mechanism |
Country Status (1)
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| CN (1) | CN201546647U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883272A (en) * | 2014-02-14 | 2014-06-25 | 江苏申利达机械制造有限公司 | Double-layer planet claw clamping mechanism of main tongs of open-type power tongs |
| CN105625965A (en) * | 2016-03-24 | 2016-06-01 | 江苏如石机械有限公司 | Intelligent well drilling power tongs |
| CN115555887A (en) * | 2022-09-20 | 2023-01-03 | 上海诺倬力机电科技有限公司 | Hydraulic clamping mechanism, hydraulic clamping system and five-axis clamping system |
-
2009
- 2009-11-12 CN CN2009202575436U patent/CN201546647U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883272A (en) * | 2014-02-14 | 2014-06-25 | 江苏申利达机械制造有限公司 | Double-layer planet claw clamping mechanism of main tongs of open-type power tongs |
| CN103883272B (en) * | 2014-02-14 | 2016-03-16 | 江苏申利达机械制造有限公司 | A kind of double-deck Planetary Grip Mechanism of opening power pincers |
| CN105625965A (en) * | 2016-03-24 | 2016-06-01 | 江苏如石机械有限公司 | Intelligent well drilling power tongs |
| CN115555887A (en) * | 2022-09-20 | 2023-01-03 | 上海诺倬力机电科技有限公司 | Hydraulic clamping mechanism, hydraulic clamping system and five-axis clamping system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |