CN1274041A - Roller bit with solid lubricant layer - Google Patents
Roller bit with solid lubricant layer Download PDFInfo
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- CN1274041A CN1274041A CN 00114553 CN00114553A CN1274041A CN 1274041 A CN1274041 A CN 1274041A CN 00114553 CN00114553 CN 00114553 CN 00114553 A CN00114553 A CN 00114553A CN 1274041 A CN1274041 A CN 1274041A
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- layer
- solid lubricant
- gear wheel
- bit
- lubricant layer
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Abstract
A roller bit with solid lubricating layer has rollers and holder, which are linked via bearing unit composed of slide bearing structure, slide bush bearing structure and rolling beaming structure. It features that one or more surfaces of said bearing unit have a sulfur osmosizing layer. Its advantages include high antiwear and heat-dissipating nature, high adhesion between osmosizing layer and base body, high integrity and high productivity.
Description
The present invention relates to a kind of rock bit that is used for petroleum gas, mine and geological drilling, comprise tricone bit, two rock bit, single cone and polydonita wheel drill bit, particularly a kind of its bearing portion surface has the rock bit of solid lubricant layer.
Rock bit mainly is made of gear wheel and bit leg two parts, and palm of roller bits engages by their bearing portion, and can be relative to rotating flexibly.Rock bit is divided into two types according to their service behaviour and the structure of bearing portion, and first journal bearing bit comprises that bearing portion installs the journal bearing bit of lining; It two is rolling bearing rock bit.
An important service index weighing the rock bit quality is its rotating speed and the pressure of the drill, i.e. the size of PV value, and the service behaviour of gear wheel bearing is a key factor that determines this service index.With regard to journal bearing bit, drill bit company generally adopts the brush plating silver coating as solid lubricant layer at the bearing portion of rock bit both at home and abroad at present, this coating has stronger anti-friction wear-resistant, bite-resistant and radiating effect, makes drill bit obtain good on-the-spot service index.But under high rotating speed, high the pressure of the drill condition, the abrasion resistance of brush plating silver coating, persistence descend, thereby cause reduce the application life of rock bit, in addition, the brush plating silver coating also exists anchoring strength of coating low, influenced greatly by thickness of coating, the difficult control of technology, plating bath costliness, the cost height, the problem of the little position of bearing process operation difference, and be generally manual operations, labour intensity is big, productivity ratio is low.Lining in the bush structure also exists similar problem.For the rock bit of rolling bearing structure, its main failure forms is a fatigue wear, comprises the inside and outside rotary surface of gear wheel bearing portion and the fatigue wear that the rolling element surface is produced.Theoretical research and experiment show that the generation of fatigue wear and bearing pair lubrication state and finish are closely related.Therefore, reducing and reduce fatigue wear is to improve a key of rolling bearing rock bit overall performance.
The objective of the invention is provides a kind of not only performance excellent at the deficiency of above-mentioned existence, and easily processing, the rock bit with solid lubricant layer that cost is low.
Realize that technical scheme of the present invention is: include gear wheel, bit leg, gear wheel, bit leg engage by its bearing portion, and its difference is to have one deck sulphide layer on one or more surfaces of bearing portion.
Press such scheme, the structure of described bearing portion can be sliding bearing structure, comprises the sliding bearing structure of installing lining, also can be rolling bearing structure, and the surface of described bearing portion is hole, the axle surface of bearing, the end face surface of bearing; Each surface of lining; Each surface of rolling element.Sulfurizing of the present invention is treated to last one manufacturing procedure of product, stream sulphur layer can be processed by the low temperature ion sulfuration technology, usually case-hardened preliminary treatment such as carburizing and quenching can be carried out in the sulfurizing surface, and through fine finishining, the thickness of sulphide layer is 0.001-0.30mm, is the solid lubricant layer of metal sulfide for one deck is formed at the product matrix surface, its distributed density from outward appearance to inner essence becomes the gradient shape, forms alloy-layer metallurgical binding, main with matrix.Also can contain the little metal oxide in the metal sulfide.
The invention has the advantages that: sulphide layer possesses many spaces, lamellar tissue's design feature, thereby have good self-lubricating property and a bite-resistant performance, make it keep antifriction, heat dissipation characteristics that the brush plating silver coating is had, and it is more wear-resisting than it, persistence is better, higher with high base strength, can effectively improve the performance that pressure and rotating speed are born in existing cone bit bearing position; And for rolling bearing structure, sulphide layer can significantly reduce the shear stress between the rolling contact surface, therefore also just reduced generation fatigue crack tendency, improved its surperficial anti-fatigue performance, reduced mutual adhesive wear simultaneously, thereby improve the overall performance of rock bit, make rock bit more adapt to the requirement of the high rotating speed of modern drilling technology, high the pressure of the drill; Sulfurizing technology of the present invention is easy and simple to handle, adapts to produce in enormous quantities, and not only processing cost is low, and can reduce labor intensity, and enhances productivity.
Fig. 1 is the sectional structure chart of one embodiment of the invention.
Fig. 2 is the sectional view of Fig. 1 dens in dente wheel bearing position structure.
Fig. 3 is the sectional view of bit leg bearing portion structure among Fig. 1.
Fig. 4 is the sectional structure chart of second embodiment of the invention.
Fig. 5 is the sectional structure chart of third embodiment of the invention.
Fig. 6 is the sectional structure chart of four embodiment of the invention.
Fig. 7 is the sectional view of Fig. 6 dens in dente wheel bearing position structure.
Fig. 8 is the sectional view of bit leg bearing portion structure among Fig. 6.
Fig. 9 is the sectional structure chart of fifth embodiment of the invention.
Further describe embodiments of the invention below in conjunction with accompanying drawing.
First embodiment as shown in Figure 1, 2, 3, be a kind of sliding bearing structure rock bit, include gear wheel 1 and bit leg 8, gear wheel and bit leg engage by their bearing portion, palm of roller bits is axially locked by locking element 14, be equipped with sealing ring 15 in the lower end of their joints, the bearing portion surface of gear wheel is each surface of gear wheel endoporus: the big axis hole of gear wheel 2 surfaces, the little axis hole of gear wheel 3 surfaces, gear wheel two road thrust surfaces 5, one thrust surface of gear wheel 6 and gear wheel locking slot 4 surfaces can be impregnated with sulphide layer on above-mentioned any one or a plurality of surface; The bearing portion surface of bit leg 8 is each surface of bit leg journel: big axle journal 9 surfaces, pilot pin 10 surfaces, one thrust surface of axle journal 13, axle journal two road thrust surfaces 12 and axle journal locking slot 11 surfaces, can be impregnated with sulphide layer on above-mentioned any one or a plurality of surface, but common build-up wear-resistant alloy 23 according to circumstances on some surfaces of bearing portion of bit leg, the locking element surface also can be impregnated with sulphide layer, in addition, on the seal groove surface of installing sealing ring, comprise that seal groove 7 surfaces of gear wheel endoporus and sealing surface 16 surfaces of bit leg journel are impregnated with sulphide layer, if sealing ring is the metallic combination sealing ring, hardware wherein also can be impregnated with sulphide layer; According to circumstances, for further increasing the anti-wear performance and the surface stress intensity of gear wheel bearing portion, can under the sulphide layer on one or more surfaces of the bearing portion of journal bearing bit, be impregnated with one deck boride layer earlier, normally under the sulphide layer on bit leg journel surface, ooze one deck boride layer earlier, the thickness of boride layer is 0.05-0.1mm, forms a boronising sulfurizing composite bed therefrom.The processing processing procedure of present embodiment is: part cleans after heat treatment and fine finishining, puts into and carries out low temperature ion sulfuration processing, treatment temperature 180-190 ℃, sulfurizing medium H in the stove
2S and CS
2Or be the bright sulfur steam, the processing time is 6-8 hour, sulphide layer thickness is 0.02-0.03mm.If need boronising sulfurizing composite bed, then must carry out carrying out sulfurizing again after boronising is handled earlier and handle.
Second embodiment of the present invention as shown in Figure 4, be a kind of lining sliding bearing structure, it is to be installed on slide bushing at the bearing portion that palm of roller bits engages with the main difference part of a last embodiment, and slide bushing comprises floating bush and stationary bushing; Floating bush and each fitting face of cone bit bearing position are matched in clearance, floating bush comprises macro-axis floating bush 17, two road thrust plates 18, little axle floating bush, one thrust plate or the little unsteady cap 19 of little axle that floating bush is combined into one with thrust plate, these floating bushes can be made by high strength steel 4Cr5MoSiV1 (being equivalent to U.S. H13 steel), one deck sulphide layer is infiltrated on one or more surfaces at floating bush, and the floating bush that sulfurizing is handled can be the part or all of of above-mentioned these linings.The more existing floating bush rock bit of floating bush bearing structure rock bit of the present invention is all having further raising aspect high temperature resistant, high pressure wearing and tearing, bite-resistant performance, supporting capacity and application life.The some fitting faces of stationary bushing and cone bit bearing position (hole or axle) are interference fit, stationary bushing comprises macro-axis stationary bushing, little axle stationary bushing, little axle locking cap, to above-mentioned these stationary bushings partly or entirely, sulphide layer is infiltrated on wherein one or more surfaces.
Third embodiment of the invention also is a kind of lining sliding bearing as shown in Figure 5, and the main difference part of it and a last embodiment is for floating bush: the L shaped floating bush 20 of formation can be combined as a whole little axle floating bush and two road thrust plates; Then L shaped stationary bushing can be arranged for stationary bushing.
The 4th embodiment of the present invention is shown in Fig. 6,7,8, be a kind of rolling bearing rock bit, the main difference part of it and first embodiment is to be provided with the raceway 22 that goes in ring between big axis hole of gear wheel and the big axle journal of bit leg, install rolling element 21 in the belt raceway, rolling element can be cylindrical, sulphide layer is infiltrated on any one that can be among the raceway that goes in ring, rolling element or a plurality of surface, and the other parts structure is identical with a last embodiment.In addition, according to circumstances, the L shaped floating bush that two road thrust plates, little axle floating bush or pilot pin floating bush and two road thrust plates are combined into one also can be set at other position of rolling bearing, one deck sulphide layer is infiltrated on part or all of, one or more surfaces of above-mentioned these floating bushes.Also can be on the little axle surface of bit leg and two road thrust surfaces build-up wear-resistant alloy 23.The sealing position of present embodiment is provided with metallic combination sealing ring 15, is combined by metal o-ring and rubber or plastic seal ring, can infiltrate sulphide layer on each surface of metal o-ring.
The 5th embodiment of the present invention as shown in Figure 9, the main difference part of it and the 4th embodiment is between little axis hole of gear wheel and bit leg pilot pin ring raceway to be set, be installed on rolling element 21 in the belt raceway, rolling element can be cylindrical, constitute a full rolling bearing rock bit like this, sulphide layer is infiltrated on any one that can be among go in ring raceway, rolling element or a plurality of surface.
Claims (15)
1, a kind of rock bit with solid lubricant layer includes gear wheel, bit leg, and gear wheel, bit leg engage by its bearing portion, it is characterized in that having one deck sulphide layer on one or more surfaces of bearing portion.
2, by the described rock bit with solid lubricant layer of claim 1, the thickness that it is characterized in that sulphide layer is 0.001-0.30mm.
3, by claim 1 or 2 described rock bit with solid lubricant layer, the structure that it is characterized in that described bearing portion is a sliding bearing structure.
4, by the described rock bit of claim 3 with solid lubricant layer, the bearing portion surface that it is characterized in that gear wheel (1) is each surface of gear wheel endoporus: the big axis hole of gear wheel (2) surface, the little axis hole of gear wheel (3) surface, gear wheel two road thrust surfaces (5), one thrust surface of gear wheel (6), the bearing portion surface of bit leg (8) is each surface of bit leg journel: big axle journal (9) surface, pilot pin (10) surface, one thrust surface of axle journal (13), axle journal two road thrust surfaces (12) are impregnated with sulphide layer on above-mentioned any one or a plurality of surface.
5, by the described rock bit of claim 4 with solid lubricant layer, it is characterized in that under the sulphide layer on one or more surfaces at sliding bearing position, oozing one deck boride layer earlier, form a boronising sulfurizing composite bed thus.
6, by the described rock bit of claim 4 with solid lubricant layer, it is characterized in that being installed on floating bush at the bearing portion that palm of roller bits engages, comprise macro-axis floating bush (17), two road thrust plates (18), little axle floating bush, one thrust plate or the little little axle unsteady cap (19) that floating bush is combined into one with thrust plate, perhaps the L shaped floating bush (20) that is combined as a whole by little axle floating bush and two road thrust plates infiltrates one deck sulphide layer to part or all of, one or more surfaces of above-mentioned floating bush.
7, by the described rock bit of claim 4 with solid lubricant layer, it is characterized in that installing stationary bushing at the bearing portion that palm of roller bits engages, comprise macro-axis stationary bushing, little axle stationary bushing or little axle locking cap or L shaped stationary bushing, to above-mentioned these linings partly or entirely, sulphide layers are infiltrated on its one or more surfaces.
8,, it is characterized in that described bearing portion structure is a rolling bearing structure by claim 1 or 2 described rock bit with solid lubricant layer.
9, by the described rock bit of claim 8 with solid lubricant layer, the bearing portion surface that it is characterized in that gear wheel is each surface of gear wheel endoporus, the bearing portion surface of bit leg is each surface of bit leg journel, between big axis hole of gear wheel and the big axis hole of bit leg, be provided with belt raceway (22), install rolling element (21) in the belt raceway, sulphide layer is infiltrated on any one among go in ring raceway, rolling element or a plurality of surface.
10, by the described rock bit of claim 9 with solid lubricant layer, it is characterized in that the L shaped floating bush that two road thrust plates, little axle floating bush is set at other position of described rolling bearing or is combined into one, part or all of, one or more surface infiltration one deck sulphide layers of these floating bushes by little axle floating bush and two road thrust plates.
11, by the described rock bit of claim 9 with solid lubricant layer, it is characterized in that between little axis hole of gear wheel and bit leg pilot pin, ring raceway being set, install rolling element in the belt raceway, sulphide layer is infiltrated on any one among go in ring raceway, rolling element or a plurality of surface.
12, by claim 1 or 2 described rock bit with solid lubricant layer, it is characterized in that palm of roller bits is axially locked by locking element (14), be impregnated with sulphide layer on gear wheel locking slot (4) surface, bit leg journel locking slot (11) surface.
13, by claim 1 or 2 described rock bit with solid lubricant layer, it is characterized in that being equipped with sealing ring (15) in the lower end of the joint of palm of roller bits, on the seal groove surface of installing sealing ring, comprise that seal groove (7) surface of gear wheel endoporus and sealing surface (16) surface of bit leg journel are impregnated with sulphide layer.
14, by the described rock bit of claim 13 with solid lubricant layer, it is characterized in that sealing ring is the metallic combination sealing ring, combine by metal o-ring and rubber or plastic seal ring, infiltrate sulphide layer on each surface of metal o-ring.
15,, it is characterized in that in the metal sulfide that constitutes sulphide layer, containing a spot of metal oxide by claim 1 or 2 described rock bit with solid lubricant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN001145533A CN1094167C (en) | 1999-09-06 | 2000-05-09 | Roller bit with solid lubricant layer |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116641.8 | 1999-09-06 | ||
| CN99116641 | 1999-09-06 | ||
| CN99116639.6 | 1999-09-06 | ||
| CN99116640.X | 1999-09-06 | ||
| CN99116639 | 1999-09-06 | ||
| CN99116640 | 1999-09-06 | ||
| CN001145533A CN1094167C (en) | 1999-09-06 | 2000-05-09 | Roller bit with solid lubricant layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1274041A true CN1274041A (en) | 2000-11-22 |
| CN1094167C CN1094167C (en) | 2002-11-13 |
Family
ID=27429889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN001145533A Expired - Fee Related CN1094167C (en) | 1999-09-06 | 2000-05-09 | Roller bit with solid lubricant layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1094167C (en) |
Cited By (2)
| 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 |
| CN105332656A (en) * | 2015-12-10 | 2016-02-17 | 苏州新锐合金工具股份有限公司 | Sliding-rolling bearing tri-cone rock bit with lifting force |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886523A (en) * | 2010-07-14 | 2010-11-17 | 中国兵器工业第五二研究所 | High-strength and wear-resistant roller bit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402617A (en) * | 1981-05-12 | 1983-09-06 | Dresser Industries, Inc. | Thin wall sintered bushing for a rock bit |
| SE446646B (en) * | 1981-12-15 | 1986-09-29 | Santrade Ltd | MOUNTAIN DRILL AND WANT TO MANUFACTURE THIS |
| RU2048649C1 (en) * | 1991-10-18 | 1995-11-20 | Специальное конструкторское бюро по долотам Самарского долотного завода | Method for strengthening surface of slide bearing of drilling bit |
| US5429200A (en) * | 1994-03-31 | 1995-07-04 | Dresser Industries, Inc. | Rotary drill bit with improved cutter |
| RU2109912C1 (en) * | 1996-09-04 | 1998-04-27 | Специальное конструкторское бюро по долотам Открытого акционерного общества "Волгабурмаш" | Roller for supports of roller-cutter bits |
| CN1158909A (en) * | 1996-12-20 | 1997-09-10 | 北京市朝阳达威新技术实验厂 | Metal surface sulfurizing treatment method |
-
2000
- 2000-05-09 CN CN001145533A patent/CN1094167C/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN105332656A (en) * | 2015-12-10 | 2016-02-17 | 苏州新锐合金工具股份有限公司 | Sliding-rolling bearing tri-cone rock bit with lifting force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094167C (en) | 2002-11-13 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20021113 Termination date: 20170509 |
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| CF01 | Termination of patent right due to non-payment of annual fee |