CN102828693B - Roller bit of rolling and sliding floating sleeve bearing - Google Patents
Roller bit of rolling and sliding floating sleeve bearing Download PDFInfo
- Publication number
- CN102828693B CN102828693B CN201210358121.4A CN201210358121A CN102828693B CN 102828693 B CN102828693 B CN 102828693B CN 201210358121 A CN201210358121 A CN 201210358121A CN 102828693 B CN102828693 B CN 102828693B
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- China
- Prior art keywords
- floating sleeve
- floating
- floating bushing
- deep
- slotted chip
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Abstract
The invention relates to a roller bit of a rolling and sliding floating sleeve bearing for drilling petroleum and natural gas. The roller bit is mainly composed of an oil chamber, a slurry nozzle, a tooth claw, a cone, a rolling and sliding floating sleeve and teeth, wherein the outer brim of the floating sleeve is assembled in an inner hole of the cone; the inner brim of the floating sleeve is assembled on a large journal of the tooth claw; 2-8 arc grooves are uniformly distributed on the outer brim of the floating sleeve; 2-8 arc grooves are also uniformly distributed on the inner brim of the floating sleeve; the arc grooves on the outer brim of the floating sleeve and the arc grooves on the inner brim of the floating sleeve are staggered along the circumference; and a roller pin is embedded inside each arc groove, and the diameters of the roller pins are the same. According to the invention, the rotating precision and the lubricating capability of the floating sleeve bearing can be improved, so that the floating sleeve can normally rotate, and the stability of the floating sleeve bearing in a working process is improved, so as to improve the service life and the work efficiency of the roller bit.
Description
Technical field
The present invention relates to the rock bit of a kind of skid floating ring bearing for oil, natural gas probing.
Background technology
Floating ring bearing is a kind of more special bearing arrangement, add floating bushing between the gear wheel and tooth pawl of rock bit after, former bush(ing) bearing friction pair is transformed into inside and outside two friction pairs of floating bushing, and the relative sliding velocity of each friction pair holds lower than primitive axis, add the contact area of rubbing surface, reduce the frictional power loss of bearing.Therefore, if every other parameter remains unchanged, the rotation of floating bushing will reduce the friction factor of bearing, reduces frictional power loss and the temperature rise of bearing, causes the rate of wear of bearing to decline, thus improve the abrasive resistance of bearing.Although floating ring bearing is a kind of sliding bearing with the new structure of better development prospect, but still there is area for improvement, such as due to special construction and the lubricating system of rock bit, external friction pair between floating bushing and gear wheel and the lubricant medium of the interior friction pair between floating bushing and gear claw journal are all difficult to be supplemented, and need on original structure, improved or adopt new lubricating system; Because the floating bushing in cone bit bearing is not uniform rotation, but sometimes fast and sometimes slow, floating bushing rotates when gear wheel load is less comparatively fast, and along with the increase of load, floating bushing rotating speed is slack-off, affects the normal work of floating ring bearing.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of rock bit of skid floating ring bearing is provided.It can improve running accuracy and the lubricating ability of floating ring bearing, makes floating bushing normal rotation, thus improves application life and the operating efficiency of rock bit.
Technical scheme of the present invention is: the rock bit of a kind of skid floating ring bearing of the present invention, primarily of accumulator, swivel, tooth pawl, gear wheel, skid floating bushing, tooth composition, described floating bushing outer rim is assemblied in the endoporus of gear wheel, and floating bushing inner edge is assemblied on the large axle journal of tooth pawl; Floating bushing outer rim is laid with 2-8 deep-slotted chip breaker, and floating bushing inner edge is also laid with 2-8 deep-slotted chip breaker; Deep-slotted chip breaker circumferentially interlaced arrangement on deep-slotted chip breaker in floating bushing outer rim and floating bushing inner edge; Inlay a needle roller in each deep-slotted chip breaker, the diameter of needle roller is identical.
Due to the deep-slotted chip breaker circumferentially interlaced arrangement on the deep-slotted chip breaker in floating bushing outer rim and floating bushing inner edge, in work, floating ring bearing can form multiple oil film wedge, along with bearing rotating speed raises, entrainment the oil mass entering oil film wedge space to increase, the dynamic pressure acting in conjunction that multiple oil film wedge spaces oil films produces, makes floating ring bearing be in elastic hydrodynamic lubrication state when quiet rum, contributes to improving gear wheel and the running accuracy of tooth pawl and the lubricating ability of floating ring bearing.In deep-slotted chip breaker, inlay needle roller, the rolling frictional resistance of needle roller is little, and power consumption is little, mechanical efficiency is high, easily starts, due to the slip of floating bushing and the ingenious combination of the rolling of needle roller, the normal rotation of floating bushing when can ensure that load increases, improves floating ring bearing stability in the course of the work.
The physical dimension of above-mentioned skid floating ring bearing and initial engagement gap can select different materials to carry out process and assemble according to different requirements, make skid floating ring bearing adapt to different working environments better.
The invention has the beneficial effects as follows: the present invention can improve running accuracy and the lubricating ability of floating ring bearing, makes floating bushing normal rotation, improve floating ring bearing stability in the course of the work, thus improve application life and the operating efficiency of rock bit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rock bit of a kind of skid floating ring bearing of the present invention.
Fig. 2 is tooth pawl structural representation of the present invention.
Fig. 3 is the A-A sectional view of Fig. 2.
In figure: 1. accumulator, 2. swivel, 3. skid floating bushing, 4. tooth pawl, 5. gear wheel, 6. tooth, 7. floating bushing outer rim, 8. floating bushing inner edge, 9. deep-slotted chip breaker, 10. needle roller, 11. deep-slotted chip breakers.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, Figure 2, Figure 3 shows, the rock bit of a kind of skid floating ring bearing of the present invention, mainly comprise accumulator 1, swivel 2, tooth pawl 4, gear wheel 5, skid floating bushing 3, tooth 6 form, described floating bushing outer rim 7 is assemblied in gear wheel endoporus, and its inner rim 8 is assemblied on the large axle journal of tooth pawl; Floating bushing outer rim 7 is laid with 2-8 deep-slotted chip breaker 9, and floating bushing inner edge 8 is also laid with 2-8 deep-slotted chip breaker 11; Deep-slotted chip breaker 9 in floating bushing outer rim 7 and the deep-slotted chip breaker 11 circumferentially interlaced arrangement on floating bushing inner edge 8; Each deep-slotted chip breaker inlays a needle roller 10 in (9,11), and the diameter of needle roller 10 is identical.
Due to deep-slotted chip breaker (9,11) the circumferentially interlaced arrangement on the deep-slotted chip breaker in floating bushing outer rim 7 and floating bushing inner edge 8, in work, floating ring bearing can form multiple oil film wedge, along with bearing rotating speed raises, entrainment the oil mass entering oil film wedge space to increase, the dynamic pressure acting in conjunction that multiple oil film wedge spaces oil films produces, makes floating ring bearing be in elastic hydrodynamic lubrication state when quiet rum, contributes to improving gear wheel and the running accuracy of tooth pawl and the lubricating ability of floating ring bearing.Needle roller is inlayed in deep-slotted chip breaker, the rolling frictional resistance of needle roller is little, power consumption is little, mechanical efficiency is high, easy starting, due to the slip of skid floating bushing 3 and the ingenious combination of the rolling of needle roller, the normal rotation of floating bushing when can ensure that load increases, improves floating ring bearing stability in the course of the work.
According to concrete job requirement, skid floating bushing 3 can select different physical dimensions and initial engagement gap to carry out process and assemble, makes skid floating ring bearing adapt to different working environments better.
Claims (1)
1. the rock bit of a skid floating ring bearing, mainly comprise accumulator (1), swivel (2), tooth pawl (4), gear wheel (5), skid floating bushing (3), tooth (6) composition, it is characterized in that, described floating bushing outer rim (7) is assemblied in gear wheel endoporus, and its inner rim (8) is assemblied on the large axle journal of tooth pawl; Floating bushing outer rim (7) is laid with 2-8 deep-slotted chip breaker (9), and floating bushing inner edge (8) are also laid with 2-8 deep-slotted chip breaker (11); Deep-slotted chip breaker (9) in floating bushing outer rim (7) and deep-slotted chip breaker (11) the circumferentially interlaced arrangement on floating bushing inner edge (8); Inlay a needle roller (10) in each deep-slotted chip breaker (9,11), the diameter of needle roller (10) is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358121.4A CN102828693B (en) | 2012-09-25 | 2012-09-25 | Roller bit of rolling and sliding floating sleeve bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358121.4A CN102828693B (en) | 2012-09-25 | 2012-09-25 | Roller bit of rolling and sliding floating sleeve bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828693A CN102828693A (en) | 2012-12-19 |
| CN102828693B true CN102828693B (en) | 2015-03-04 |
Family
ID=47331981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210358121.4A Expired - Fee Related CN102828693B (en) | 2012-09-25 | 2012-09-25 | Roller bit of rolling and sliding floating sleeve bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102828693B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233682B (en) * | 2013-04-12 | 2015-09-30 | 成都保瑞特钻头有限公司 | The rock bit lubricating system of Micro-positive pressure auto-compensation |
| CN107529581B (en) * | 2017-09-06 | 2021-01-29 | 中国石油大学(华东) | Vibration-damping wear-resistant resistance-reducing drill bit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3966274A (en) * | 1975-02-13 | 1976-06-29 | Dresser Industries, Inc. | Roller separator for bit bearings |
| US4793719A (en) * | 1987-11-18 | 1988-12-27 | Smith International, Inc. | Precision roller bearing rock bits |
| CN101963041A (en) * | 2010-10-18 | 2011-02-02 | 天津立林钻头有限公司 | Cone bit with annular elastic floating bushing |
| CN201915844U (en) * | 2010-12-20 | 2011-08-03 | 西南石油大学 | Rock roller bit |
-
2012
- 2012-09-25 CN CN201210358121.4A patent/CN102828693B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3966274A (en) * | 1975-02-13 | 1976-06-29 | Dresser Industries, Inc. | Roller separator for bit bearings |
| US4793719A (en) * | 1987-11-18 | 1988-12-27 | Smith International, Inc. | Precision roller bearing rock bits |
| CN101963041A (en) * | 2010-10-18 | 2011-02-02 | 天津立林钻头有限公司 | Cone bit with annular elastic floating bushing |
| CN201915844U (en) * | 2010-12-20 | 2011-08-03 | 西南石油大学 | Rock roller bit |
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| Publication number | Publication date |
|---|---|
| CN102828693A (en) | 2012-12-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20160925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |