CN204782839U - Novel drilling rod power tong dental lamina presss from both sides tight structure - Google Patents
Novel drilling rod power tong dental lamina presss from both sides tight structure Download PDFInfo
- Publication number
- CN204782839U CN204782839U CN201520389341.2U CN201520389341U CN204782839U CN 204782839 U CN204782839 U CN 204782839U CN 201520389341 U CN201520389341 U CN 201520389341U CN 204782839 U CN204782839 U CN 204782839U
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- CN
- China
- Prior art keywords
- dental lamina
- pin
- jaw
- lamina
- dental
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- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a novel drilling rod power tong dental lamina presss from both sides tight structure, its characterized in that: including jaw, dental lamina, dental lamina pin and holding screw, the dental lamina is placed in the dovetail of jaw, the dovetail bottom of jaw is provided with one and is used for preventing the dog that the dental lamina falls out, the top is provided with a pinhole in the dovetail, the back of dental lamina be provided with one with the blind hole of the corresponding setting of pinhole, the blind hole that the dental lamina pin passed the pinhole entering dental lamina back is used for blocking the dental lamina, the middle part of dental lamina pin is provided with semi -circular draw -in groove, holding screw is from jaw top screw screw in and in blocking to go into the semi -circular draw -in groove at dental lamina pin middle part. The utility model discloses on just increased when breaking out the interlock drill pipe coupling with the area of contact of drill pipe coupling, reduced pressure, reduced the damage of dental lamina to the drilling rod.
Description
Technical field
The utility model relates to field of oil drilling, specifically refers to a kind of power tongs for drill rod dental lamina clamping structure preventing dental lamina to come off in rotary tong spinner process, be also convenient to change dental lamina simultaneously.
Background technology
At present, general drill pipe tong dental lamina is fixed on jaw dovetail groove two top by two tight fixed bolts and locks, during work, due to tight fixed bolt, to take dovetail groove position more, cause dental lamina length of action to shorten, during dental lamina occlusion drill pipe coupling, contact surface just diminishes, and pressure becomes large, easily is bitten in drill pipe coupling surface, time serious, make drilling rod scrap.In addition, due to well head work under bad environment, tight fixed bolt is just in the outlet of dental lamina dirt discharge groove, and mud is easy to bolt corrosion, and time one length causes tight fixed bolt to dismantle, and cannot change dental lamina.
Utility model content
In order to solve the problems referred to above that existing dental lamina clamping structure exists, the purpose of this utility model is the Novel toothed board clamping structure providing a kind of reliable clamping, tight fixed bolt away from dental lamina dirt discharge groove.
Realize technical scheme of the present utility model as follows:
Power tongs for drill rod dental lamina clamping structure, it comprises jaw, dental lamina, dental lamina pin and holding screw, described dental lamina is positioned in the dovetail groove of jaw, the dovetail groove bottom of described jaw is provided with a block for preventing dental lamina from dropping out, described dovetail groove inner top is provided with a pin-and-hole, the back side of described dental lamina is provided with the blind hole of a setting corresponding with described pin-and-hole, described dental lamina pin enters the blind hole at the dental lamina back side for blocking dental lamina through pin-and-hole, the middle part of described dental lamina pin is provided with semicircle draw-in groove, described holding screw screws in from screw above jaw and snaps in the semicircle draw-in groove in the middle part of dental lamina pin.
Further, described block and jaw are welded and fixed or are an overall structure with jaw.
The beneficial effects of the utility model are:
Because one end, dental lamina back side blind hole is fixed, front just can increase the efficient occlusal length of dental lamina; Other end block blocks, because the width of block is less than tight fixed bolt, so also can increase the efficient occlusal length of dental lamina.Like this, just add the contact area with drill pipe coupling during upper shackle occlusion drill pipe coupling, reduce pressure, reduce the damage of dental lamina to drilling rod.In addition, because dental lamina pin penetrates dental lamina back side blind hole from jaw back, holding screw is in jaw upper surface, all directly avoid the dirt discharge groove of dental lamina, decrease the direct contact with mud, reduce the probability of holding screw generation corrosion, holding screw is easily dismantled, change dental lamina and just become easy, improve operating efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 1 number designation illustrates: 1. holding screw, 2. blind hole, 3. dental lamina, 4. dovetail groove, 5. jaw, 6. block, 7. dental lamina pin, 8. draw-in groove, 9. pin-and-hole, 10. dirt discharge groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
In FIG, dental lamina 3 is placed in the dovetail groove 4 of jaw 5, and dovetail groove 4 one end block 6 welds and seals, prevent dental lamina from dropping out, there is a blind hole 2 side, dental lamina 3 back side, and dental lamina pin 7 enters dental lamina back side blind hole 2 through the pin-and-hole 9 on dovetail groove 4 top, be seized dental lamina, prevent it from upwards dropping out.Screw in from screw above jaw 5 with holding screw 1, holding screw 1 top snaps in the semicircle draw-in groove 8 in the middle part of dental lamina pin 7, is seized dental lamina pin and prevents it from dropping out backward again.Like this, dental lamina is just held firmly against dovetail groove and has suffered.
The jaw assembly installing dental lamina is above put into the jaw plate frame of drill pipe tong and itself and drill pipe coupling are held tightly, rotation can carry out upper shackle operation, mud is discharged from dirt discharge groove 10, does not directly contact with dental lamina pin 7 with holding screw 1, reduces the probability of corrosion.
Claims (2)
1. power tongs for drill rod dental lamina clamping structure, it is characterized in that: comprise jaw, dental lamina, dental lamina pin and holding screw, described dental lamina is positioned in the dovetail groove of jaw, the dovetail groove bottom of described jaw is provided with a block for preventing dental lamina from dropping out, described dovetail groove inner top is provided with a pin-and-hole, the back side of described dental lamina is provided with the blind hole of a setting corresponding with described pin-and-hole, described dental lamina pin enters the blind hole at the dental lamina back side for blocking dental lamina through pin-and-hole, the middle part of described dental lamina pin is provided with semicircle draw-in groove, described holding screw screws in from screw above jaw and snaps in the semicircle draw-in groove in the middle part of dental lamina pin.
2. power tongs for drill rod dental lamina clamping structure according to claim 1, is characterized in that: described block and jaw are welded and fixed or are an overall structure with jaw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389341.2U CN204782839U (en) | 2015-06-09 | 2015-06-09 | Novel drilling rod power tong dental lamina presss from both sides tight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389341.2U CN204782839U (en) | 2015-06-09 | 2015-06-09 | Novel drilling rod power tong dental lamina presss from both sides tight structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782839U true CN204782839U (en) | 2015-11-18 |
Family
ID=54522907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520389341.2U Expired - Fee Related CN204782839U (en) | 2015-06-09 | 2015-06-09 | Novel drilling rod power tong dental lamina presss from both sides tight structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623708A (en) * | 2017-02-21 | 2017-05-10 | 海盐九宏五金模具制造有限公司 | Tooth plate |
| CN113338825A (en) * | 2021-05-18 | 2021-09-03 | 如东前进石油机械制造有限公司 | Novel jaw plate device of sleeve clamp |
-
2015
- 2015-06-09 CN CN201520389341.2U patent/CN204782839U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106623708A (en) * | 2017-02-21 | 2017-05-10 | 海盐九宏五金模具制造有限公司 | Tooth plate |
| CN106623708B (en) * | 2017-02-21 | 2019-02-12 | 海盐九宏五金模具制造有限公司 | Dental lamina |
| CN113338825A (en) * | 2021-05-18 | 2021-09-03 | 如东前进石油机械制造有限公司 | Novel jaw plate device of sleeve clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20210609 |