CN202108868U - Radial bearing for screw drilling tool - Google Patents
Radial bearing for screw drilling tool Download PDFInfo
- Publication number
- CN202108868U CN202108868U CN2011201715817U CN201120171581U CN202108868U CN 202108868 U CN202108868 U CN 202108868U CN 2011201715817 U CN2011201715817 U CN 2011201715817U CN 201120171581 U CN201120171581 U CN 201120171581U CN 202108868 U CN202108868 U CN 202108868U
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- China
- Prior art keywords
- radial bearing
- wall
- overcoat
- radial
- radially
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Abstract
The utility model relates to a radial bearing for a screw drilling tool. The radial bearing comprises an upper radial bearing and a lower radial bearing, wherein the upper radial bearing comprises an upper radial outer sleeve and an upper radial inner sleeve; the upper radial outer sleeve is matched with the upper radial inner sleeve; the lower radial bearing comprises a lower radial outer sleeve and a lower radial inner sleeve; the lower radial outer sleeve is matched the lower radial inner sleeve; and the inner wall of the upper radial outer sleeve, the outer wall of the upper radial inner sleeve, the inner wall of the lower radial outer sleeve and the outer wall of the lower radial outer sleeve are provided with wearing layers respectively. In the technical scheme of the utility model, the inner wall of the upper radial outer sleeve, the outer wall of the upper radial inner sleeve, the inner wall of the lower radial outer sleeve and the outer wall of the lower radial outer sleeve are provided with wearing layers respectively, so that the wearing resistance and reliability of the radial bearing are enhanced, the journal sticking and journal cutting phenomena do not occur easily, and the working efficiency of the screw drilling tool is increased greatly.
Description
Technical field
The utility model relates to a kind of oil apparatus, relates to a kind of radial bearing that in the petroleum production process, is used for helicoid hydraulic motor specifically.
Background technique
At present; Helicoid hydraulic motor is one of most widely used mud motor in current oil, the gas drilling; Not only indispensable in directional well, horizontal well drilling operation, and along with the popularization of compound brill, helicoid hydraulic motor becomes one of indispensable downhole tool of full well section speed-raising just gradually.The use of helicoid hydraulic motor be unable to do without radial bearing, and a series of heat treatment process of the general process of the Bearing Steel of radial bearing is to improve its wear resistance.But because the drilling process of petroleum production carries out in mud, the work under bad environment of radial bearing causes that radial bearing is easy to wear, the life-span is low, seize often occurs and cuts a phenomenon.
The model utility content
The problem that the utility model will solve is to above problem, provides a kind of helicoid hydraulic motor wear-resisting, long service life to use radial bearing.
For addressing the above problem, the technological scheme that the utility model adopted is:
Helicoid hydraulic motor is used radial bearing, comprises radial bearing and lower radial bearing, and last radial bearing comprises that radially overcoat and last footpath inwardly overlap, said on radially overcoat and last footpath inwardly cover match; Said lower radial bearing comprises down radially overcoat and the inside cover in following footpath; Said down radially overcoat and footpath down inwardly cover match, it is characterized in that: on said radially the inwall of overcoat, go up the footpath inwardly cover outer wall, down radially the inwall of overcoat and down the outer wall that inwardly overlaps of footpath be respectively equipped with wearing layer.
As a kind of improvement:
Said wearing layer is inlayed by the YG8 hard alloy blocks and is formed.
Said YG8 hard alloy blocks be shaped as rectangular.
YG8 is the W-Co kind material, and wear resistance is good, and working strength and impact toughness are superior to YG6, and it is abominable and require the high occasion of wear resistance to be widely used in environmental conditions, and without heat treatment, inside and outside even hardness is consistent.
The utility model is through taking above technological scheme; The inwall of last radially overcoat, on the footpath inwardly cover outer wall, down radially the inwall of overcoat and down the footpath inwardly the outer wall of cover be respectively equipped with wearing layer; Improve the wear resistance and the reliability of radial bearing; Be difficult for seize taking place and cutting a phenomenon, improved the working efficiency of helicoid hydraulic motor greatly.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Accompanying drawing 1 be among the utility model embodiment on the structural representation of overcoat radially;
Accompanying drawing 2 is the right elevation of accompanying drawing 1;
Accompanying drawing 3 is to go up the inwardly structural representation of cover of footpath among the utility model embodiment;
Accompanying drawing 4 is the following radially structural representation of overcoat among the utility model embodiment;
Accompanying drawing 5 is the structural representation that directly inwardly overlaps down among the utility model embodiment
Among the figure: the last radially overcoat of 1-; The 2-wearing layer; The last footpath of 3-is cover inwardly; The 4-YG8 hard alloy blocks; Overcoat radially under the 5-; 6-footpath down inwardly overlaps.
Embodiment
Embodiment: like Fig. 1, Fig. 2 and shown in Figure 3, helicoid hydraulic motor is used radial bearing, comprises radial bearing and lower radial bearing, and last radial bearing comprises radially inwardly cover 3 of overcoat 1 and last footpath, said on radially overcoat 1 inwardly overlap 3 with last footpath and match.
Like Fig. 4 and shown in Figure 5, said lower radial bearing comprises down radially inwardly cover 6 of overcoat 5 and footpath down, said down radially overcoat 5 inwardly overlap 6 with footpath down and match.
On said radially the inwall of overcoat 1, go up the footpath inwardly cover 3 outer wall, down radially the inwall of overcoat 5 and down the footpath inwardly the outer wall of cover 6 be respectively equipped with wearing layer 2.
Said wearing layer 2 is inlayed by YG8 hard alloy blocks 4 and is formed, the geometrical shape that is shaped as rule of said YG8 hard alloy blocks 4, and what the utility model adopted is rectangle structure.
YG8 is the W-Co kind material, and main component is Tungsten carbite and binder cobalt, and wherein the percentage composition of cobalt is 8%, and all the other are the W-Co kind cemented carbide of Tungsten carbite.
Wear resistance is good, and working strength and impact toughness are superior to YG6, belongs to senior pattern-making material; Stretching die under the very big condition of stress; Be suitable for drawing the steel of diameter less than 50 ㎜, nonferrous metal silk and alloy wire thereof or bar also are used for little stamping die of the less work loads of size and rivet upsetting die; Without heat treatment, inside and outside even hardness is consistent.
Claims (3)
1. helicoid hydraulic motor is used radial bearing, comprises radial bearing and lower radial bearing, and last radial bearing comprises that radially overcoat (1) and last footpath inwardly overlap (3), said on radially overcoat (1) inwardly overlap (3) with last footpath and match; Said lower radial bearing comprises down radially overcoat (5) and the inside cover in footpath (6) down; Said down radially overcoat (5) and footpath down inwardly cover (6) match, it is characterized in that: on said radially the inwall of overcoat (1), go up the footpath inwardly cover (3) outer wall, down radially the inwall of overcoat (5) and down the footpath outer wall that inwardly overlaps (6) be respectively equipped with wearing layer (2).
2. helicoid hydraulic motor as claimed in claim 1 is used radial bearing, it is characterized in that: said wearing layer (2) is inlayed by YG8 hard alloy blocks (4) and is formed.
3. helicoid hydraulic motor as claimed in claim 2 is used radial bearing, it is characterized in that: said YG8 hard alloy blocks (4) be shaped as rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201715817U CN202108868U (en) | 2011-05-26 | 2011-05-26 | Radial bearing for screw drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201715817U CN202108868U (en) | 2011-05-26 | 2011-05-26 | Radial bearing for screw drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108868U true CN202108868U (en) | 2012-01-11 |
Family
ID=45434305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201715817U Expired - Fee Related CN202108868U (en) | 2011-05-26 | 2011-05-26 | Radial bearing for screw drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899243A (en) * | 2012-12-25 | 2014-07-02 | 中国石油天然气集团公司 | Transmission shaft assembly of screw rod drilling tool |
-
2011
- 2011-05-26 CN CN2011201715817U patent/CN202108868U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899243A (en) * | 2012-12-25 | 2014-07-02 | 中国石油天然气集团公司 | Transmission shaft assembly of screw rod drilling tool |
| CN103899243B (en) * | 2012-12-25 | 2016-03-09 | 中国石油天然气集团公司 | A kind of screw drill transmission shaft assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120526 |