CN2923975Y - Tricone bit for mine - Google Patents
Tricone bit for mine Download PDFInfo
- Publication number
- CN2923975Y CN2923975Y CN 200620074928 CN200620074928U CN2923975Y CN 2923975 Y CN2923975 Y CN 2923975Y CN 200620074928 CN200620074928 CN 200620074928 CN 200620074928 U CN200620074928 U CN 200620074928U CN 2923975 Y CN2923975 Y CN 2923975Y
- Authority
- CN
- China
- Prior art keywords
- bit
- rock bit
- tricone rock
- blasthole tricone
- long pore
- 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
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Abstract
The utility model relating to a drill bit is a tricone bit for mine drilling or gas drilling, which comprises a head section, a roller, a long ventilation hole and a bearing is arranged on the head section. A ballast proof tube is arranged on the long ventilation hole. A seal device is arranged between a shaft neck of the head section and the roller. A seal membrane is arranged on the top end of the long ventilation hole. Lipid can be sealed and stored inside of the bearing cavity of the tricone bit and the long ventilation hole. Compared with a non-seal and non-lubrication structure of a traditional mine tricone bit, the utility model can lubricate the bearing in a certain time, the mine tricone bit works on as usual after seal failure and depletion of lipid. As a lubrication effect is exerted on mechanism, the combined index of the utility model increases by 15-20% compared to traditional tricone bits.
Description
Technical field
The utility model relates to boring of a kind of mine and air drilling drill bit, a kind of specifically blasthole tricone rock bit.
Background technology
Tricone bit is used in mine boring mostly, because the blasthole tricone rock bit working environment is more abominable, so application life is generally shorter.According to inventor investigation, it all is that damage owing to its bearing causes that the damage of traditional blasthole tricone rock bit has more than 80%, and its basic reason is: traditional blasthole tricone rock bit employing be the unlubricated bearing arrangement of non-tight.Be illustrated in figure 1 as the structural representation of traditional blasthole tricone rock bit, comprise bit leg 1, gear wheel 2, axle journal 3, long pore 4, air vent 5, retaining quarrel pipe 6, Compressed Gas is through long pore 4, air vent 5 cooling bearings, long pore 4 communicates with air vent 5, also leak fast and run off even inject sliding agent such as grease, can't realize utilizing sliding agent such as grease that bearing is lubricated.Bearing is worked under top load, the slow-speed of revolution, unlubricated, air cooling state continuously, is easy to damage, thereby causes the damage of blasthole tricone rock bit.According to inventor's statistics, 50～80 hours big effects of rear bearing of the most of work of traditional blasthole tricone rock bit.In recent years, at unlubricated this shortcoming of blasthole tricone rock bit bearing, those skilled in the art also want this is made improvement, but blasthole tricone rock bit with gas as boring medium, the drill bit cooling effect is poor, and this has brought great difficulty for solution bearing lubrication, and the metallic seal drill bit can be used for mine boring but costs an arm and a leg, so far still do not have a kind of can lubricating bearings, economical and practical again blasthole tricone rock bit occurs.
Summary of the invention
The purpose of this utility model is exactly at existing this shortcoming of blasthole tricone rock bit non-tight unlubricated bearing structure, proposes a kind of blasthole tricone rock bit that can effectively be lubricated bearing within a certain period of time.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of blasthole tricone rock bit comprises bit leg, gear wheel, is provided with long pore, air vent on bit leg, is provided with retaining quarrel pipe on long pore, is provided with sealing device between the axle journal of bit leg and gear wheel, is provided with diaphragm seal on the long pore.
The purpose of this utility model can also further realize by following technical measures:
Aforesaid blasthole tricone rock bit, wherein said diaphragm seal are located at long pore and retaining quarrel pipe joint.
Aforesaid blasthole tricone rock bit, wherein said sealing device are sealing ring.
Aforesaid blasthole tricone rock bit, wherein said sealing device are O-ring seals, wedge-type seal circle.
Aforesaid blasthole tricone rock bit, the breakdown pressure that wherein said diaphragm seal bore are 0.2～1 MPa.
Aforesaid blasthole tricone rock bit, the cross section compression ratio of wherein said sealing ring is 6～23%.
Aforesaid blasthole tricone rock bit, wherein said long pore is provided with oil filler point and oil outlet.
Aforesaid blasthole tricone rock bit, wherein said oil outlet are located at long pore upper end, diaphragm seal below, and oil filler point is located at long pore lower end.
Be provided with sealing ring between the axle journal of blasthole tricone rock bit and gear wheel, long pore upper end is provided with diaphragm seal, grease can be laid in hermetically in bearing, air vent and long pore.Blasthole tricone rock bit is worked under hot environment, and sealing ring lost efficacy, and compressed air is pressed into bearing with grease, plays the effect of lubricating bearings.Along with air pressure increases, diaphragm seal is squeezed broken, after a period of time, seal entirely ineffectively, and grease has also all been revealed, during this period of time in, bearing has obtained good lubricating.
Advantage of the present utility model is: grease can be laid in bearing, air vent and the long pore at blasthole tricone rock bit hermetically, compare traditional blasthole tricone rock bit non-tight unlubricated bearing structure, the utility model can carry out well lubricated within a certain period of time to bearing.Blasthole tricone rock bit of the present utility model can be worked under lubrication 15～30 hours, and after seal failure, grease used up, blasthole tricone rock bit worked on as in the past.Owing to increased the time of one section lubricated work, compare traditional blasthole tricone rock bit, the utility model can improve 15～20% with footage per bit (rice), and also be improved application life.
Description of drawings
Fig. 1 is the structural representation of traditional blasthole tricone rock bit;
Fig. 2 is the structural representation of an embodiment of the utility model;
Fig. 3 is the structural representation of diaphragm seal assembly;
Among the figure: 1 bit leg, 2 gear wheels, 3 axle journals, 4 long pores, 5 air vents, 6 retaining quarrel pipes, 7 sealing rings, 8 diaphragm seals, 9 oil filler points, 10 oil outlets.
The specific embodiment
Embodiment one
Figure 2 shows that an embodiment of the present utility model, a kind of blasthole tricone rock bit, comprise bit leg 1, gear wheel 2, axle journal 3, long pore 4, air vent 5, retaining quarrel pipe 6, the sealing device that is provided with between axle journal 3 and gear wheel 2 is sealing ring 7 (also can adopt other forms of seal), and what present embodiment used is " zero " RunddichtringO 7.Be provided with diaphragm seal 8 in long pore 4 upper ends, diaphragm seal 8 is located at long pore 4 and the joint that keeps off quarrel pipe 6.The structure of diaphragm seal assembly as shown in Figure 3, diaphragm seal 8 a heat insulating mattress arranged respectively up and down, diaphragm seal 8 was made of preservative film or polyethylene sheeting, assembling retaining quarrel pipe 6 o'clock, make retaining quarrel pipe 6 tightly be pressed in the periphery of diaphragm seal assembly, retaining quarrel pipe 6 and long pore 4 are by being weldingly connected.The cross section compression ratio of " zero " RunddichtringO 7 is 6～23%, " zero " RunddichtringO 7 can be pressed between axle journal 3 and the gear wheel 2, and the slit between axle journal 3 and the gear wheel 2 is sealed.Because the existence of diaphragm seal 8 and " zero " RunddichtringO 7, making in bearing, long pore 4 and the ventilation 5 becomes sealing state, can inject grease to the inside.Be provided with oil filler point 9 and oil outlet 10 on long pore 4, oil filler point 9 and oil outlet 10 communicate with long pore 4 on the bit leg 1, and oil outlet 10 is located at long pore 4 upper ends, diaphragm seal 8 belows, and oil filler point 9 is located at long pore 4 lower ends.Grease can be injected in bearing, long pore 4 and the air vent 5 by oil filler point 9, when institute's fatten flowed out from oil outlet 10, the decidable grease had been full of bearing, long pore 4 and air vent 5.
During blasthole tricone rock bit work, its operating temperature can reach 90～150 ℃, and " zero " RunddichtringO 7 at high temperature can lose efficacy.After " zero " RunddichtringO 7 lost efficacy, sealing function scattered and disappeared, the grease in bearing, long pore 4 and the air vent 5 slowly from 7 leakages of " zero " RunddichtringO.The breakdown pressure that diaphragm seal 8 is born is 0.2～1 MPa, the compressed air pressure of blasthole tricone rock bit work is generally 0.3～1.2 MPa, the compressed air direction is shown in arrow among Fig. 2, inefficacy along with " zero " RunddichtringO 7, pressure differential of long pore 4 inside and outside existence, when pressure differential rises to the breakdown pressure that diaphragm seal 8 born, diaphragm seal 8 is squeezed broken, under the effect of compressed air pressure, grease further is pressed into bearing, through 3～5 hours, grease all was pressed into bearing and reveals.After grease was all revealed in bearing, long pore 4 and the air vent 5, bearing, long pore 4 and air vent 5 no longer sealed, and blasthole tricone rock bit transfers under the no sealing state of routine and working on.Owing to used sealing device and diaphragm seal, make blasthole tricone rock bit increase by one section lubrication time, during this period of time, bearing is worked under the lubrication of grease, causes the drilling footage index of blasthole tricone rock bit can improve 15～20% like this.
The utility model can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the claimed scope of the utility model.
Claims (8)
1. a blasthole tricone rock bit comprises bit leg, gear wheel, is provided with long pore, bearing on bit leg, is provided with retaining quarrel pipe on long pore, it is characterized in that: be provided with sealing device between the axle journal of described bit leg and gear wheel, described long pore upper end is provided with diaphragm seal.
2. blasthole tricone rock bit as claimed in claim 1 is characterized in that: described diaphragm seal is located at long pore and retaining quarrel pipe joint.
3. blasthole tricone rock bit as claimed in claim 1 is characterized in that: described sealing device is a sealing ring.
4. as claim 1 or 3 described blasthole tricone rock bits, it is characterized in that: described sealing device is O-ring seals, wedge-type seal circle.
5. blasthole tricone rock bit as claimed in claim 1 or 2 is characterized in that: the breakdown pressure that described diaphragm seal bore is 0.2～1 MPa.
6. blasthole tricone rock bit as claimed in claim 4 is characterized in that: the cross section compression ratio of described sealing ring is 6～23%.
7. blasthole tricone rock bit as claimed in claim 1 is characterized in that: described long pore is provided with oil filler point and oil outlet.
8. blasthole tricone rock bit as claimed in claim 8 is characterized in that: described oil outlet is located at long pore upper end, diaphragm seal below, and described oil filler point is located at long pore lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074928 CN2923975Y (en) | 2006-07-17 | 2006-07-17 | Tricone bit for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074928 CN2923975Y (en) | 2006-07-17 | 2006-07-17 | Tricone bit for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2923975Y true CN2923975Y (en) | 2007-07-18 |
Family
ID=38260407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074928 Expired - Lifetime CN2923975Y (en) | 2006-07-17 | 2006-07-17 | Tricone bit for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2923975Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102037208A (en) * | 2008-03-14 | 2011-04-27 | 威瑞尔国际工业公司 | Texturing of the bearing surface for a roller cone rock bit |
-
2006
- 2006-07-17 CN CN 200620074928 patent/CN2923975Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102037208A (en) * | 2008-03-14 | 2011-04-27 | 威瑞尔国际工业公司 | Texturing of the bearing surface for a roller cone rock bit |
| CN102037208B (en) * | 2008-03-14 | 2014-07-30 | 威瑞尔国际工业公司 | Texturing of the bearing surface for a roller cone rock bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060717 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |