CN202946020U - Cone bit bearing assembly with monometallic sealing system and floating bearing system combined - Google Patents
Cone bit bearing assembly with monometallic sealing system and floating bearing system combined Download PDFInfo
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- CN202946020U CN202946020U CN 201220448931 CN201220448931U CN202946020U CN 202946020 U CN202946020 U CN 202946020U CN 201220448931 CN201220448931 CN 201220448931 CN 201220448931 U CN201220448931 U CN 201220448931U CN 202946020 U CN202946020 U CN 202946020U
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- floating
- gear wheel
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Abstract
The utility model relates to a cone bit bearing assembly with a monometallic sealing system and a floating bearing system combined. The cone bit bearing assembly is used in industries of oil drilling and mining. A sealing movable hoop, an O-shaped sealing ring and a monometallic sealing fixed hoop are installed between the root portion of a tooth claw shaft and the outer port of a cone hole and form the monometallic sealing system, wherein the sealing movable hoop is inlayed in a cone inner hole. The compressed O-shaped sealing ring is attached to a curved face of the root portion of the tooth claw shaft and the inner side surface of the monometallic sealing fixed hoop to form two fixed sealing faces, a plane of a large end of the monometallic sealing fixed hoop is attached to the outer end face of the sealing movable hoop to form a movable sealing face, so that drilling fluid is prevented from entering a bearing cavity. A large floating sleeve, a small floating sleeve and a thrust gasket which are made of anti-attrition materials are installed between the tooth claw shaft and the cone hole and form the floating bearing system. The cone bit bearing assembly with the monometallic sealing system and the floating bearing system combined has the advantages that the movable sealing face which is matched with a metallic face is high in intensity, high-temperature resisting, high in rotary speed, and capable of improving bearing capacity of a bearing. The floating bearing system reduces friction speed and friction heat of the bearing, and service life of the bearing is long.
Description
Technical field
The utility model belongs to a kind of mining and oil drilling cone bit bearing assembly, particularly the cone bit bearing assembly of a kind of monometallic sealing system and the combination of floating bearing system.
Background technology
Along with the development of drilling technology and the increase of drilling depth, the particularly application of combined drilling technology, requirement to application life of main drilling tool-rock bit and drilling efficiency is more and more higher, and especially can adapt to the requirement of high rotating speed drilling well be crucial for bit bearing and sealing.At present generally that use, traditional rubber seal drill bit because of rubber seal directly with tooth pawl axle high speed rotary grinding quick heating, easily damage causes seal failure too early.And hole, axle directly contact the rock bit plain bearing of composition because of hole, axle direct friction, rubbing surface quick heating under down-hole high pressure, high rotating speed effect, make lubrication oil inefficacy in bearing bore, therefore the drilling well requirement that can't satisfy the high speed drilling well and bore deep-well, though bimetallic (spring cone) seal can be satisfied the requirement of seal aspect, but the axial space that takies bearing due to two metallic packing rings is larger, has shortened effective contact length of bearing, has reduced the supporting capacity of bearing.
The utility model content
In order to overcome the deficiency of above-mentioned rubber seal plain bearing drill bit and bimetallic (spring cone) seal drill bit, the utility model provides the cone bit bearing assembly of a kind of monometallic sealing system and the combination of floating bearing system, it is to have installed to be bumped into gear wheel endoporus and the moving sealing ring that rotates, O-ring seals and monometallic stationary seal ring between the root of cat's paw's axle and gear wheel outer end of hole mouth together with gear wheel, the root curved surface that comprises tooth pawl axle consists of the monometallic sealing system, has formed two static seal faces and the movable sealing face by the metal covering pairing; Large floating bushing, moderate fluctuation cover, the thrust pad made by antifriction material have been installed between tooth pawl axle and gear wheel hole have been consisted of the floating bearing system, made the rubbing surface of bearing increase by one times, thereby reduced the frictional heat of each rubbing surface.This utility model has that the bimetallic (spring cone) seal friction factor is little, high temperature resistant, high-revolving advantage, has overcome that the bimetallic (spring cone) seal axial occupation space is large, bearing load carrying capacity low and rubber seal and plain bearing is not high pressure resistant, high-revolving shortcoming.
The technical scheme of utility model:
1, gear wheel is contained on tooth pawl axle, can rotate around tooth cat's paw axle, between the root of cat's paw's axle and gear wheel outer end of hole mouth, the moving sealing ring that is bumped into the gear wheel endoporus and rotates has been installed together with gear wheel, the monometallic stationary seal ring, O-ring seals, the root curved surface that comprises tooth pawl axle consists of the monometallic sealing system, O-ring seals coverlet metal sealing stationary ring inner surface is compressed on the root curved surface of tooth pawl axle, form two static seal faces, the distortion elastic force of the compressed rear generation of O-ring seals is close together the large transverse plane of monometallic stationary seal ring and the outer face of moving sealing ring, form movable sealing face, prevent that drilling fluid from entering in bearing bore.
2, between tooth pawl axle and gear wheel hole, large floating bushing, moderate fluctuation cover, thrust pad have been installed, have been comprised that the macro-axis of tooth pawl axle, little axle, axle thrust surface and gear wheel macropore, gear wheel aperture, hole thrust surface consist of the floating bearing system.The inside and outside surface of large floating bushing coordinates respectively two cylinder sliding friction surface of formation with macro-axis, the gear wheel macropore of tooth pawl axle, the inside and outside surface of moderate fluctuation cover coordinates two other cylinder sliding friction surface of formation with little axle and the gear wheel aperture of tooth pawl axle respectively, and two planes of thrust pad coordinate with the axle thrust surface of tooth pawl axle and the hole thrust surface of gear wheel the rubbing surface that forms two planar slides respectively.Large floating bushing, moderate fluctuation cover and thrust pad all are in quick condition, and its velocity of rotation is zero between the velocity of rotation of gear wheel.
The root curved surface of described tooth pawl axle is the inclination curved surface, and its angle of slope b is 30 °～40 °.
Described monometallic stationary seal ring and moving sealing ring are to be made by materials such as martensitic stain less steel, high-speed steel, carbide alloy, cermets.
Described O-ring seals is to be made by nitrile rubber, fluorubber elastomeric material.
Described large floating bushing, moderate fluctuation cover and thrust pad are to be made by antifriction materials such as beryllium-bronze, tin bronze or kirsites.
Described large floating bushing, moderate fluctuation cover are the column torus, and described thrust pad is the sheet torus.
The large end of described monometallic stationary seal ring has a plane and an inclined-plane, and its angle of slope, inclined-plane c is greater than 5 °～8 °.
Described monometallic stationary seal ring inner surface is that its angle of slope a is greater than 30 °～40 ° by two circular arc concave surfaces and the inclination curved surface that arc convex surface forms.
Characteristics of the present utility model are: 1, movable sealing face is metal pairing face,, high rotating speed more high temperature resistant than rubber seal, and friction factor is little, and the life-span is long.2, less than bimetallic (spring cone) seal axial occupation space, improved the supporting capacity of bearing.3, the floating bearing system has increased the rubbing surface of a times than the plain bearing that hole, axle directly form, thereby has reduced friction velocity and the frictional heat of each rubbing surface, the life-span of having improved bearing.
Description of drawings
Fig. 1 is the utility model bearing assembly structure schematic diagram;
Fig. 2 is the utility model bearing assembly decomposing state schematic diagram;
Fig. 3 is that the partial enlarged drawing of Fig. 1 is monometallic sealing system structural representation;
Fig. 4 is the cross section enlarged drawing of monometallic stationary seal ring;
Fig. 5 is the sectional view of monometallic stationary seal ring.
Description of reference numerals:
The specific embodiment
Further illustrate this enforcement below in conjunction with accompanying drawing novel:
1, referring to accompanying drawing 1, Fig. 3, Fig. 4, Fig. 5, gear wheel 5 are contained on tooth pawl axle 1, can rotate around tooth pawl axle 1.The moving sealing ring 4, O-ring seals 2 and the monometallic stationary seal ring 3 that are bumped into gear wheel 5 endoporus and rotate together with gear wheel 5 have been installed between the outer end of hole mouth of tooth pawl axle 1 root and gear wheel 5, have been comprised that the root curved surface 9 of tooth pawl axle 1 consists of the monometallic sealing system.O-ring seals 2 coverlet metal sealing stationary ring 3 inner arc concave surfaces 29, arc convex surface 30, circular arc concave surface 31 are compressed on root curved surface 9, form two static seal faces 23 and 24, and the outer face 15 that the distortion elastic force of O-ring seals 2 compressed rear generations makes the large transverse plane 27 of monometallic stationary seal ring 3 be close to moving sealing ring 4 forms movable sealing face 25, enters in bearing bore to prevent drilling fluid.Root curved surface 9 is the inclination curved surface, and inclination angle b is 30 °～40 °.
described monometallic stationary seal ring 3 its cross sections are inboard is the inclination curved surface, angle of inclination a is greater than 30 °～40 °, in order to make sealing firmly, its large end in the right, cross section is provided with one section plane 27, enter movable sealing face 25 for ease of lubrication oil, its large end in the right, cross section is provided with one section inclined-plane 28, inclination angle c is greater than 5 °～8 °, for preventing compressed O-ring seals 2 vibration to the right, its inboard, cross section is provided with circular arc concave surface 29, for increasing the radial compression amount of O-ring seals 2, its inboard, cross section is provided with arc convex surface 30, for preventing compressed O-ring seals 2 vibration left, its inboard, cross section is provided with circular arc concave surface 31, be provided with chamfering 26 in order to prevent that the bight from collapsing to take off.
2, referring to accompanying drawing 1, Fig. 2, large floating bushing 6, moderate fluctuation cover 8, thrust pad 7 have been installed between the hole of tooth pawl axle 1 and gear wheel 5, macro-axis 10, axle thrust surface 11, little axle 12 and the gear wheel macropore 16, hole thrust surface 21, the gear wheel aperture 22 that comprise tooth pawl axle 1 consist of the floating bearing system.Inner surface 14 and the external surface 13 of large floating bushing 6 coordinate with macro-axis 10 and gear wheel macropore 16 respectively, form two cylinder sliding friction surface; Two planes 19 of thrust pad 7 and 20 coordinate with axle thrust surface 11 and hole thrust surface 21 respectively, form the rubbing surface of two planar slides; External surface 17 and the inner surface 18 of moderate fluctuation cover 8 coordinate with gear wheel aperture 22 and little axle 12 respectively, form two other cylinder sliding friction surface, and large floating bushing 6, moderate fluctuation cover 8, thrust pad 7 all are in quick condition.Because the friction surface of floating bearing system has increased by one times than the rubbing surface of plain bearing, thereby friction velocity and the frictional heat of each rubbing surface have been reduced.
Claims (8)
1. the cone bit bearing assembly of a monometallic sealing system and the combination of floating bearing system, it is characterized in that: gear wheel is contained on tooth pawl axle, between the root of tooth pawl axle and gear wheel outer end of hole mouth, the moving sealing ring that is bumped into the gear wheel endoporus has been installed, monometallic stationary seal ring and O-ring seals, the root curved surface that comprises tooth pawl axle consists of the monometallic sealing system, O-ring seals coverlet gold stationary seal ring inner surface is compressed on the root curved surface of tooth pawl axle, form two static seal faces, the distortion elastic force of the compressed rear generation of O-ring seals makes the large transverse plane of monometallic stationary seal ring and the outer face of moving sealing ring fit tightly formation movable sealing face, between tooth pawl axle and gear wheel hole, large floating bushing has been installed, the moderate fluctuation cover, thrust pad, the macro-axis that comprises tooth pawl axle, little axle, the axle thrust surface, the gear wheel macropore, gear wheel aperture and hole thrust surface consist of the floating bearing system, in large floating bushing, external surface coordinates two cylinder sliding friction surface of formation with macro-axis and the gear wheel macropore of tooth pawl axle respectively, in the moderate fluctuation cover, external surface coordinates two other cylinder sliding friction surface of formation with little axle and the gear wheel aperture of tooth pawl axle respectively, two planes of thrust pad coordinate with the axle thrust surface of tooth pawl axle and the hole thrust surface of gear wheel the rubbing surface that forms two planar slides respectively.
2. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: described monometallic stationary seal ring and moving sealing ring are to be made by materials such as martensitic stain less steel, carbide alloy, high-speed steel, cermets.
3. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system is characterized in that: the inclination angle that the large end of described monometallic stationary seal ring has a plane and an inclined-plane, an inclined-plane is for greater than 5 °～8 °.
4. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: the inner surface of described monometallic stationary seal ring is that its angle of inclination is greater than 30 °～40 ° by two circular arc concave surfaces and the inclination curved surface that arc convex surface forms.
5. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: the root curved surface of described tooth pawl axle is a curved surface that tilts, and its angle of inclination is 30 °～40 °.
6. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: described large floating bushing, moderate fluctuation cover are the column torus, and described thrust pad is the sheet torus.
7. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: described large floating bushing, moderate fluctuation cover, thrust pad are to be made by antifriction materials such as beryllium-bronze, tin bronze or kirsites.
8. the cone bit bearing assembly of monometallic sealing system according to claim 1 and the combination of floating bearing system, it is characterized in that: described O-ring seals is to be made by nitrile rubber, fluorubber elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220448931 CN202946020U (en) | 2012-08-26 | 2012-08-26 | Cone bit bearing assembly with monometallic sealing system and floating bearing system combined |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220448931 CN202946020U (en) | 2012-08-26 | 2012-08-26 | Cone bit bearing assembly with monometallic sealing system and floating bearing system combined |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946020U true CN202946020U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220448931 Expired - Fee Related CN202946020U (en) | 2012-08-26 | 2012-08-26 | Cone bit bearing assembly with monometallic sealing system and floating bearing system combined |
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| CN (1) | CN202946020U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291220A (en) * | 2013-06-05 | 2013-09-11 | 西南石油大学 | Roller bit bearing with sleeves at internally-fixed and externally-floating end |
| CN104763341A (en) * | 2015-04-28 | 2015-07-08 | 江汉石油钻头股份有限公司 | Roller bit bearing single metal sealing structure |
| CN107461155A (en) * | 2017-03-30 | 2017-12-12 | 西南石油大学 | A kind of geothermal exploration drilling well high speed tricone bit |
| CN108019152A (en) * | 2017-12-28 | 2018-05-11 | 苏州新锐合金工具股份有限公司 | A kind of monometallic seals bearing tricone bit |
| CN113217532A (en) * | 2021-05-31 | 2021-08-06 | 中石化江钻石油机械有限公司 | Bearing with high bearing and high wear resistance and machining method thereof |
-
2012
- 2012-08-26 CN CN 201220448931 patent/CN202946020U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291220A (en) * | 2013-06-05 | 2013-09-11 | 西南石油大学 | Roller bit bearing with sleeves at internally-fixed and externally-floating end |
| CN104763341A (en) * | 2015-04-28 | 2015-07-08 | 江汉石油钻头股份有限公司 | Roller bit bearing single metal sealing structure |
| CN107461155A (en) * | 2017-03-30 | 2017-12-12 | 西南石油大学 | A kind of geothermal exploration drilling well high speed tricone bit |
| CN108019152A (en) * | 2017-12-28 | 2018-05-11 | 苏州新锐合金工具股份有限公司 | A kind of monometallic seals bearing tricone bit |
| CN113217532A (en) * | 2021-05-31 | 2021-08-06 | 中石化江钻石油机械有限公司 | Bearing with high bearing and high wear resistance and machining method thereof |
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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: 20130522 Termination date: 20200826 |
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| CF01 | Termination of patent right due to non-payment of annual fee |