CN2627190Y - Rock bit with tooth slot protection teeth - Google Patents
Rock bit with tooth slot protection teeth Download PDFInfo
- Publication number
- CN2627190Y CN2627190Y CN 03254446 CN03254446U CN2627190Y CN 2627190 Y CN2627190 Y CN 2627190Y CN 03254446 CN03254446 CN 03254446 CN 03254446 U CN03254446 U CN 03254446U CN 2627190 Y CN2627190 Y CN 2627190Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- teeth
- teeth groove
- groove protection
- bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
The utility model relates to a roller bit with tooth slot protection teeth used for the geologic drilling of petroleum and mines, particularly a multi-roller bit with tooth slot protection teeth. The utility model comprises a roller and a cone leg, wherein the roller is provided with a cutting tooth and a tooth slot. The utility model is characterized in that tooth slot protection teeth are arranged in an annular top row of tooth slot of the roller. The utility model has the advantages that the top row of tooth slot is protected effectively, the abnormal abrasion of the tooth slot is avoided, and thus, the situations of broken roller the tip and dropped roller are overcome; due to the cutting and breaking effect of the tooth slot protection teeth, the active cutting and breaking effect of corresponding rocks in a non-breaking zone is formed, and thus, the formation of a non-fracturing zone is overcome effectively; the breaking efficiency of the rock formation at the bottom of a well is increased, and the drilling speed of the roller bit can be increased.
Description
Technical field
The utility model relates to a kind of rock bit that is provided with teeth groove protection tooth that is suitable for use in oil, the mining geology probing, particularly is provided with the polydonita wheel drill bit of teeth groove protection tooth.
Background technology
Rock bit comprises oil, the geological drilling field of extensively being applied to, and rock bit is made of gear wheel and bit leg two large divisions.Polydonita wheel drill bit is made of three gear wheels and bit leg as tricone bit.Gear wheel is the awl dentation usually, is laid with annular gear ring and teeth groove at interval on the conical surface of gear wheel, installs cutting teeth on the gear ring.Teeth groove is between each gear ring, and it mainly acts on and is to hold the circulation of considering chip removal to be worth doing and keeping drilling fluid.Because the diameter on gear wheel top (small end) is little, thereby the cutting teeth of its top toothrow circle is less, top toothrow groove is broad at interval, during underground work, the shaft bottom is formed one easily enclose not zone of fracture, zone of fracture is not on middle soft formation and hard crisp stratum for this, and the cross shear of dependence rock bit can in time cut off; But when drilling tool takes place by eccentric the rotation in running into hard plastic formation and creeping in lower curved section and creep into,, and cause the not zone of fracture in shaft bottom more and more higher, constitute wearing and tearing gear wheel top toothrow groove because the drill bit cross shear is not enough to not zone of fracture of fragmentation.So when rock bit is used for hard plastic formation and lower curved section drilling well, often be prone to the situation of top toothrow groove inordinate wear, disconnected wheel point and lost cone.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of teeth groove of effectively protecting to avoid forming the not rock bit of zone of fracture of shaft bottom simultaneously at above-mentioned the deficiencies in the prior art.
The utility model is to address the above problem the technical scheme that is adopted to be: include gear wheel 1 and bit leg 2, be installed on cutting teeth 3 on the gear wheel, and offer teeth groove, its difference is to be provided with teeth groove protection tooth 5 in the circular top toothrow groove 4 of gear wheel.
Press such scheme, described palm of roller bits is provided with 1-5, is generally 3; Described teeth groove protection tooth can be flat-top post tooth or chisel teeth or blunt conical-ended shape insert or ball tooth; Used tooth material can be hard-metal insert, Ceramic Composite tooth or polycrystal diamond composite teeth; Teeth groove protection tooth is installed on 1-12 along circular top toothrow groove, highly is the 0-5 millimeter grinningly; Described gear wheel is insert cone or steel-tooth cone.
The beneficial effects of the utility model are: 1. can effectively protect top toothrow groove, avoid the inordinate wear of teeth groove, thereby overcome the situation of disconnected wheel point and lost cone; 2. because the cutting fragmentation of teeth groove protection tooth; can form shearing-crushing effect initiatively to corresponding not zone of fracture rock; so not only effectively overcome the not formation of zone of fracture, improved the crushing efficiency of rock stratum, shaft bottom, and helped the raising of roller bit cutting speed.
Description of drawings
Fig. 1 is the face upwarding stereogram of an embodiment of the utility model.
Fig. 2 is the positive view of gear wheel among embodiment of the utility model.
The specific embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.Be a tricone bit, include three gear wheels 1 and bit leg 2; Gear wheel is an insert cone, installs on the gear wheel to be inlaid with cutting teeth 3, and cutting teeth can be chisel teeth, in the circular top toothrow groove 4 of each gear wheel, is inlaid with 3-8 teeth groove protection tooth 5; Teeth groove protection tooth is hard-metal insert or polycrystal diamond composite teeth; profile of tooth is a chisel teeth; along circumferentially uniform; highly be the 2-4 millimeter grinningly; the setting of teeth groove protection tooth is a prerequisite with the engagement that does not influence cutting teeth between three gear wheels; corresponding dissimilar rock bit, and the Different Strata that is adapted to is selected the structural parameters of teeth groove protection tooth.
Claims (7)
1, a kind of rock bit that is provided with teeth groove protection tooth includes gear wheel and bit leg, is installed on cutting teeth on the gear wheel, and offers teeth groove, it is characterized in that being provided with in the circular top toothrow groove of gear wheel teeth groove protection tooth.
2,, it is characterized in that described palm of roller bits is provided with 1-5 by the described rock bit that is provided with teeth groove protection tooth of claim 1.
3,, it is characterized in that described teeth groove protection tooth is flat-top post tooth or chisel teeth or blunt conical-ended shape insert or ball tooth by claim 1 or the 2 described rock bit that are provided with teeth groove protection tooth.
4, by claim 1 or the 2 described rock bit that are provided with teeth groove protection tooth, it is characterized in that the used tooth material of teeth groove protection tooth is hard-metal insert, Ceramic Composite tooth or polycrystal diamond composite teeth.
5, by claim 1 or the 2 described rock bit that are provided with teeth groove protection tooth, it is characterized in that teeth groove protection tooth is installed on 1-12 along circular top toothrow groove, highly is the 0-5 millimeter grinningly.
6, by claim 1 or the 2 described rock bit that are provided with teeth groove protection tooth, it is characterized in that described gear wheel is insert cone or steel-tooth cone.
7, by the described rock bit that is provided with teeth groove protection tooth of claim 2; it is characterized in that being a tricone bit, include three gear wheels and bit leg, gear wheel is an insert cone; install on the gear wheel and be inlaid with cutting teeth; cutting teeth is a chisel teeth, in the circular top toothrow groove of each gear wheel, is inlaid with 3-8 teeth groove protection tooth; teeth groove protection tooth is hard-metal insert or polycrystal diamond composite teeth; profile of tooth is a chisel teeth, along circumferentially uniform, highly is the 2-4 millimeter grinningly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254446 CN2627190Y (en) | 2003-06-12 | 2003-06-12 | Rock bit with tooth slot protection teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254446 CN2627190Y (en) | 2003-06-12 | 2003-06-12 | Rock bit with tooth slot protection teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2627190Y true CN2627190Y (en) | 2004-07-21 |
Family
ID=34253561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03254446 Expired - Lifetime CN2627190Y (en) | 2003-06-12 | 2003-06-12 | Rock bit with tooth slot protection teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2627190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061887A (en) * | 2011-01-13 | 2011-05-18 | 东北石油大学 | Tooth placement drill bit formed by mixing hard alloy teeth with polycrystalline diamond clad sheets |
| CN103032026A (en) * | 2011-09-30 | 2013-04-10 | 维拉国际工业有限公司 | Protective inserts for a roller cone bit |
| WO2017097188A1 (en) * | 2015-12-08 | 2017-06-15 | 苏州新锐合金工具股份有限公司 | Tricone drill bit having reinforced cone cover protection |
-
2003
- 2003-06-12 CN CN 03254446 patent/CN2627190Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061887A (en) * | 2011-01-13 | 2011-05-18 | 东北石油大学 | Tooth placement drill bit formed by mixing hard alloy teeth with polycrystalline diamond clad sheets |
| CN102061887B (en) * | 2011-01-13 | 2013-05-01 | 东北石油大学 | Tooth placement drill bit formed by mixing hard alloy teeth with polycrystalline diamond clad sheets |
| CN103032026A (en) * | 2011-09-30 | 2013-04-10 | 维拉国际工业有限公司 | Protective inserts for a roller cone bit |
| WO2017097188A1 (en) * | 2015-12-08 | 2017-06-15 | 苏州新锐合金工具股份有限公司 | Tricone drill bit having reinforced cone cover protection |
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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: 20130613 Granted publication date: 20040721 |