CN2625557Y - Roller bit with reinforced active gage structure - Google Patents
Roller bit with reinforced active gage structure Download PDFInfo
- Publication number
- CN2625557Y CN2625557Y CN 03254080 CN03254080U CN2625557Y CN 2625557 Y CN2625557 Y CN 2625557Y CN 03254080 CN03254080 CN 03254080 CN 03254080 U CN03254080 U CN 03254080U CN 2625557 Y CN2625557 Y CN 2625557Y
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- teeth
- gear wheel
- bit
- tooth
- roller cone
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Abstract
The utility model relates to a roller bit which is provided with an enhancement active gage protection structure and used in the fields of oil, natural gas, mines and geological drilling, in particular to a multiple roller cone bit with the enhancement active gage protection structure. The utility model comprises a roller cone and a palm of roller bits, the cutting teeth are arranged on the roller cone, the differences lies in that an outer row of cutting teeth and an outer row of trimming teeth are arranged on the outer row of a ring gear of the roller cone. The utility model has the beneficial effects that: firstly, the arrangement of the outer row of cutting teeth and the outer row of trimming teeth on the outer row of the ring gear of the roller cone improves the situation of overplus well bottom cutting function and deficient well wall repairing function of the existing roller cone bit, which causes the teeth arrangement of the roller cone bit to be much more reasonable; secondly, the active well wall cutting function of the roller cone bit is strengthened, which not only improves the gage protection ability of the roller cone bit, so that the well walls are finished well by the outer row of trimming teeth and the drilling quality is improved greatly, but also reduces the resistance of the passive gage protection and increases the machine drilling speed of the roller cone bit; thirdly, the utility model is simple in structure and easy to be processed and operated.
Description
Technical field
The utility model relates to the polydonita wheel drill bit of the rock bit that a kind of tool that is used for oil, natural gas, mine and geological drilling field is strengthened active gauge structure, particularly tool reinforcement active gauge structure.
Background technology
Rock bit mainly is made up of gear wheel and bit leg two large divisions, and polydonita wheel drill bit has two or more gear wheels, and the most frequently used in the polydonita wheel drill bit is tricone bit.Gear wheel is set on the cantilevered axle of bit leg bottom and can be around the rotation of bit leg cantilevered axle, the cutting structure of gear wheel external surface broken formation downhole under with the impact that compound motion produced, crushing and the slip shear action of gear wheel revolution, rotation and length feed formation.
Concerning polydonita wheel drill bit, cone outer row is protected the cutting teeth at position, footpath the effect of rock of borehole is mainly finished by cut mode.The gauge structure of insert cone is made of cone outer row tooth and gauge compact.Because outer rows of teeth is undertaken the footpath task of protecting; require wear-resisting; and owing to the linear velocity HI high impact is greatly that anti-tooth fractures; outer rows of teeth is generally selected for use chisel teeth highly less grinningly, the blunt circle of crown; and the flat-head shape gauge compact mainly plays wear-resisting and the effect of protection gear wheel matrix; because their cuttings and mobile rock are limited in one's ability, so can not very cut the borehole wall effectively.U.S. Pat 5351768 and US5479997 have proposed a kind of rock bit of improving the gear wheel cutting structure, their main feature is to set up a circle wedge shape deburring tooth in the intersection of the gear wheel conical surface and back cone, in order to the spiral spine shape borehole wall under residual behind finishing gauge compact and the broken rock of outer rows of teeth, make the guarantor of gear wheel directly cut increased functionality, thereby improve the rate of penetration of rock bit and protect the footpath performance.But adopt this deburring toothing, it is comparatively complicated that the cutting structure of first gear wheel becomes, and brought inconvenience to processing, and it two is the restrictions that are subjected to structure space, and this deburring tooth diameter and high grinningly less makes it repair the function limitation of scraping the borehole wall.On the other hand, the cone outer row tooth of existing rock bit is undertaken the dual-use function of the cutting shaft bottom and the borehole wall, though cloth number of teeth amount is more, but because its cutting edge of outer rows of teeth of being laid is all parallel with the gear wheel bus, such outer rows of teeth laying structure makes gear wheel cutting shaft bottom function surplus and repaiies and scrape borehole wall insufficiency of function.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiency that above-mentioned prior art exists and provides that a kind of structure is comparatively simple, the cloth dental transition is the rock bit that rational tool is strengthened active gauge structure, and is superfluous and repair the situation of scraping borehole wall insufficiency of function to cutting shaft bottom function to improve the cone outer row tooth.
The utility model for the technical scheme that the problem that solves above-mentioned proposition adopts is: include bit leg 1 and gear wheel 2, be laid with cutting teeth 6 on the gear wheel, its difference is to be installed on simultaneously on the gear ring 3 effluxing of gear wheel and effluxes cutting teeth 4 and efflux deburring tooth 5.
Press such scheme, the described cutting teeth 4 of effluxing is the conventional cutting teeth that effluxes, and promptly to efflux cutting teeth identical in profile of tooth and laying orientation and routine; The described deburring tooth 5 that effluxes is chisel teeth or inclined to one side chisel teeth, and the tooth top cutting edge 7 that effluxes the deburring tooth becomes vertical or basic vertical configuration with the gear wheel bus, and promptly it lays the conventional relatively outer rows of teeth half-twist in orientation; Effluxing cutting teeth and efflux the deburring tooth can interlaced laying on cone outer row gear ring 3; Described palm of roller bits is 2～5, installs simultaneously on the gear ring effluxing of 1～2 gear wheel at least to efflux cutting teeth 4 and efflux deburring tooth 5.
The beneficial effects of the utility model are: 1, install simultaneously on the cone outer row gear ring and efflux cutting teeth and deburring tooth, constituted and had the gear wheel of strengthening active gauge structure, improved existing rock bit cutting shaft bottom function surplus and repaiied the situation of scraping borehole wall insufficiency of function, made the dental transition of gear wheel cloth become reasonable; 2, since strengthened rock bit initiatively cut borehole wall function, not only improved the guarantor footpath ability of rock bit, repaired the borehole wall well, improved drilling quality by effluxing the deburring tooth, and reduced passive guarantor footpath resistance, improved the rate of penetration of rock bit; 3, have simple in structurely, be easy to make and machining characteristics.
Description of drawings
Fig. 1 is the elevation of an embodiment of the utility model.
Fig. 2 is the upward view of an embodiment of the utility model.
Fig. 3 is the local cloth tooth diagram of gear wheel among embodiment of the utility model.
Fig. 4, Fig. 5 are for effluxing the elevation and the lateral view of deburring tooth among embodiment of the utility model.
Fig. 6, Fig. 7 are another kind of elevation and the lateral view that effluxes the deburring tooth.
The specific embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.It is a tricone bit, include gear wheel 2 and bit leg 1, bit leg is connected with gear wheel by the cantilevered axle of its underpart, on each gear wheel, be installed with cutting teeth 6, efflux at gear wheel that interlaced being installed with effluxes cutting teeth 4 and efflux deburring tooth 5 on the gear ring 3, effluxing cutting teeth is chisel teeth, also can be inclined to one side chisel teeth or circular cone tooth, the tooth top cutting edge that effluxes cutting teeth parallels with the gear wheel bus, effluxing the deburring tooth is chisel teeth or inclined to one side chisel teeth, effluxing deburring tooth 5, to be installed on the cone outer row gear ring its tooth top cutting edge 7 perpendicular with the gear wheel bus, efflux the deburring tooth and efflux the rule footpath of cutting teeth on gear wheel back cone line 8 measure-alike, as shown in Figure 3, in addition, also be installed with tack gauge compact 10 on the back cone 9 of gear wheel, effluxing deburring tooth 5 can be by diamond composite teeth, wear resistant alloy material cutting teeths such as polycrystalline diamond tooth constitute.The structure that effluxes the deburring tooth and be chisel teeth can have multiple, the denticle 11 that includes cylindricality is inlayed mutually with the perforation on the gear wheel and is closed, and crown part 12 is wedge shape, is crossed and forms at tooth top by two upwardly extending inclined-planes of both sides, tooth top cutting edge 7 can be linearity or circular-arc, shown in Fig. 4,6.
Claims (7)
1, a kind of tool is strengthened the rock bit of active gauge structure, includes bit leg and gear wheel, is laid with cutting teeth on the gear wheel, it is characterized in that being installed on simultaneously on the gear ring effluxing of gear wheel effluxing cutting teeth and effluxing the deburring tooth.
2, strengthen the rock bit of active gauge structure by the described tool of claim 1, it is characterized in that the described deburring tooth that effluxes is chisel teeth or inclined to one side chisel teeth.
3, strengthen the rock bit of active gauge structure by claim 1 or 2 described tools, it is characterized in that the tooth top cutting edge that effluxes the deburring tooth becomes vertical or basic vertical configuration with the gear wheel bus.
4, strengthen the rock bit of active gauge structure by the described tool of claim 3, it is characterized in that effluxing cutting teeth and efflux the interlaced laying on the cone outer row gear ring of deburring tooth.
5, strengthen the rock bit of active gauge structures by claim 1 or 2 described tools, it is characterized in that described palm of roller bits is 2～5, install simultaneously on the gear ring effluxing of 1～2 gear wheel at least and efflux cutting teeth and efflux the deburring tooth.
6, strengthen the rock bit of active gauge structure by claim 1 or 2 described tools, it is characterized in that being a tricone bit, include gear wheel and bit leg, bit leg is connected with gear wheel by the cantilevered axle of its underpart, on each gear wheel, be installed with cutting teeth, efflux at gear wheel that interlaced being installed with effluxes cutting teeth and efflux the deburring tooth on the gear ring, effluxing cutting teeth is chisel teeth or inclined to one side chisel teeth, the tooth top cutting edge that effluxes cutting teeth parallels with the gear wheel bus, effluxing the deburring tooth is chisel teeth or inclined to one side chisel teeth, effluxing the deburring tooth, to be installed on the cone outer row gear ring its tooth top cutting edge and gear wheel bus perpendicular, effluxes the deburring tooth and efflux the rule footpath of cutting teeth on gear wheel back cone line measure-alike.
7, strengthen the rock bit of active gauge structure by claim 1 or 2 described tools, it is characterized in that on the back cone of gear wheel, also being installed with the tack gauge compact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254080 CN2625557Y (en) | 2003-05-20 | 2003-05-20 | Roller bit with reinforced active gage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254080 CN2625557Y (en) | 2003-05-20 | 2003-05-20 | Roller bit with reinforced active gage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2625557Y true CN2625557Y (en) | 2004-07-14 |
Family
ID=34253419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03254080 Expired - Lifetime CN2625557Y (en) | 2003-05-20 | 2003-05-20 | Roller bit with reinforced active gage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2625557Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147692A (en) * | 2013-02-28 | 2013-06-12 | 西南石油大学 | Gear-fixed cutting structure composite drill bit |
| CN108222845A (en) * | 2018-04-09 | 2018-06-29 | 成都百施特金刚石钻头有限公司 | The cyclic annular cutting alloy tooth of drill and petroleum extraction tools |
-
2003
- 2003-05-20 CN CN 03254080 patent/CN2625557Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147692A (en) * | 2013-02-28 | 2013-06-12 | 西南石油大学 | Gear-fixed cutting structure composite drill bit |
| CN103147692B (en) * | 2013-02-28 | 2015-11-18 | 西南石油大学 | A kind of gear wheel-stationary cutting structure composite drill bit |
| CN108222845A (en) * | 2018-04-09 | 2018-06-29 | 成都百施特金刚石钻头有限公司 | The cyclic annular cutting alloy tooth of drill and petroleum extraction tools |
| CN108222845B (en) * | 2018-04-09 | 2024-04-26 | 成都百施特金刚石钻头有限公司 | Annular cutting alloy tooth for drilling and production tool |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130520 Granted publication date: 20040714 |