CN204113148U - A kind of drilling rod tongs dental lamina - Google Patents
A kind of drilling rod tongs dental lamina Download PDFInfo
- Publication number
- CN204113148U CN204113148U CN201420422472.1U CN201420422472U CN204113148U CN 204113148 U CN204113148 U CN 204113148U CN 201420422472 U CN201420422472 U CN 201420422472U CN 204113148 U CN204113148 U CN 204113148U
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- CN
- China
- Prior art keywords
- tooth
- dental lamina
- drilling rod
- row
- diameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000001997 corrosion-resisting alloy Substances 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model provides a kind of drilling rod tongs dental lamina, comprise dental lamina body and be located at the tooth portion on dental lamina body, the top of described dental lamina body and the bottom in tooth portion are indent arc, two arcuate shape are identical, described tooth portion is evenly distributed with the hemispheric tooth of multiple row above, wherein the diameter of the tooth of middle two row is identical, the diameter of all the other teeth successively decreases from middle two row gradually to both sides, and described dental lamina body and the external surface of tooth are respectively equipped with the first corrosion resisting alloy coating and the second corrosion resisting alloy coating.Drilling rod tongs dental lamina of the present utility model, has following technique effect: the tooth portion 1) is indent arc, and the easy wedging drilling rod surface of tooth, all teeth all contact with drilling rod, avoid relatively rotating of dental lamina, reduce the wearing and tearing to drilling rod.2) diameter of tooth successively decreases from middle gradually to two ends, and middle tooth is thick, and the tooth at two ends is thin, and whole Gear Surface Strength is high, shock-resistant, can increase the service life.
Description
Technical field
the utility model relates to a kind of drilling rod tongs dental lamina, belongs to oil equipment technical field.
Background technology
Dental lamina is widely used on Type B tongs and various Power Tong (drill pipe tong, sleeve power tongs and oil pipe Power Tong), and it is the important rapid wear accessory of a class of Oil Field.Existing dental lamina is easy to wear, perishable, easily damages drilling rod, reduces application life.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art part, provides a kind of drilling rod tongs dental lamina.
Drilling rod tongs dental lamina of the present utility model, comprise dental lamina body and be located at the tooth portion on dental lamina body, the top of described dental lamina body and the bottom in tooth portion are indent arc, two arcuate shape are identical, described tooth portion is evenly distributed with the hemispheric tooth of multiple row above, wherein the diameter of the tooth of middle two row is identical, the diameter of all the other teeth successively decreases from middle two row gradually to both sides, and described dental lamina body and the external surface of tooth are respectively equipped with the first corrosion resisting alloy coating and the second corrosion resisting alloy coating.
Space or tight is had between each described tooth.
Drilling rod tongs dental lamina of the present utility model, has following technique effect:
1) the tooth portion described in is indent arc, and the easy wedging drilling rod surface of tooth, all teeth all contact with drilling rod, avoid relatively rotating of dental lamina, reduce the wearing and tearing to drilling rod.
2) diameter of tooth successively decreases from middle gradually to two ends, and middle tooth is thick, and the tooth at two ends is thin, and whole Gear Surface Strength is high, shock-resistant, can increase the service life.
Accompanying drawing explanation
Fig. 1 is the sectional view of the drilling rod tongs dental lamina of embodiment 1 of the present utility model.
Fig. 2 is the sectional view of the drilling rod tongs dental lamina of embodiment 2 of the present utility model.
Wherein, 1 is dental lamina body, and 2 is tooth, and 3 is the first corrosion resisting alloy coating, and 4 is the second corrosion resisting alloy coating, and 5 is space.
Detailed description of the invention
embodiment 1
As shown in Figure 1, the drilling rod tongs dental lamina of the present embodiment, the tooth portion comprising dental lamina body 1 and be located on dental lamina body 1, the top of described dental lamina body 1 and the bottom in tooth portion are indent arc, two arcuate shape are identical, described tooth portion is evenly distributed with the hemispheric tooth 2 of multiple row above, described tooth has 10 row, the diameter of the tooth of middle two row is identical, the diameter of all the other teeth successively decreases from middle two row gradually to both sides, from middle, the diameter of four row teeth is to the right followed successively by 4/5 of two middle row tooth diameters, 3/5, 2/5, 1/5, the diameter of four row teeth is left followed successively by 4/5 of two middle row tooth diameters, 3/5, 2/5, 1/5.Described dental lamina body 1 and the surface of tooth 2 are respectively equipped with the first corrosion resisting alloy coating 3 and the second corrosion resisting alloy coating 4.Space is not had between each tooth.
embodiment 2
As shown in Figure 2, the drilling rod tongs dental lamina of the present embodiment, the tooth portion comprising dental lamina body 1 and be located on dental lamina body 1, the top of described dental lamina body 1 and the bottom in tooth portion are indent arc, two arcuate shape are identical, described tooth portion is evenly distributed with the hemispheric tooth 2 of multiple row above, described tooth 2 has 6 row, the diameter of two middle row teeth is identical, the diameter of all the other teeth successively decreases from middle two row gradually to both sides, from middle, the diameter of 2 row teeth is to the right followed successively by 2/3 of two middle row tooth diameters, 1/3, the diameter of 2 row teeth is left followed successively by 2/3 of two middle row tooth diameters, 1/3.Described dental lamina body 1 and the surface of tooth 2 are respectively equipped with the first corrosion resisting alloy coating 3 and the second corrosion resisting alloy coating 4.Space 5 is had between each tooth.
By reference to the accompanying drawings embodiment of the present utility model is described in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Claims (2)
1. a drilling rod tongs dental lamina, it is characterized in that, comprise dental lamina body and be located at the tooth portion on dental lamina body, the top of described dental lamina body and the bottom in tooth portion are indent arc, two arcuate shape are identical, described tooth portion is evenly distributed with the hemispheric tooth of multiple row above, wherein the diameter of the tooth of middle two row is identical, the diameter of all the other teeth successively decreases from middle two row gradually to both sides, and described dental lamina body and the external surface of tooth are respectively equipped with the first corrosion resisting alloy coating and the second corrosion resisting alloy coating.
2. drilling rod tongs dental lamina according to claim 1, is characterized in that, has space or tight between each described tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422472.1U CN204113148U (en) | 2014-07-30 | 2014-07-30 | A kind of drilling rod tongs dental lamina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422472.1U CN204113148U (en) | 2014-07-30 | 2014-07-30 | A kind of drilling rod tongs dental lamina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113148U true CN204113148U (en) | 2015-01-21 |
Family
ID=52330472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420422472.1U Expired - Fee Related CN204113148U (en) | 2014-07-30 | 2014-07-30 | A kind of drilling rod tongs dental lamina |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781449A (en) * | 2016-05-11 | 2016-07-20 | 中南大学 | Combined type clamping tile mechanism of horizontally directional drilling machine |
-
2014
- 2014-07-30 CN CN201420422472.1U patent/CN204113148U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781449A (en) * | 2016-05-11 | 2016-07-20 | 中南大学 | Combined type clamping tile mechanism of horizontally directional drilling machine |
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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 |
Granted publication date: 20150121 |