CN201843523U - Bearing grease pressure constant roller bit - Google Patents
Bearing grease pressure constant roller bit Download PDFInfo
- Publication number
- CN201843523U CN201843523U CN2010202109519U CN201020210951U CN201843523U CN 201843523 U CN201843523 U CN 201843523U CN 2010202109519 U CN2010202109519 U CN 2010202109519U CN 201020210951 U CN201020210951 U CN 201020210951U CN 201843523 U CN201843523 U CN 201843523U
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- China
- Prior art keywords
- bearing
- oil
- constant pressure
- grease
- valve plate
- 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 - Fee Related
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- 239000004519 grease Substances 0.000 title claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000001050 lubricating effect Effects 0.000 claims description 44
- 239000011435 rock Substances 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 208000035874 Excoriation Diseases 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 230000002028 premature Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000006353 environmental stress Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
Abstract
The utility model relates to a bearing grease pressure constant roller bit, comprising an alloy tooth, a bearing for mounting the bit, a jaw, a roller and an oil storage system for providing the grease to a bearing cavity, wherein the oil storage system comprises an oil sac, an oil path for conveying the grease in the oil sac to the bearing cavity and a bearing grease pressure constant device capable of adjusting the pressure of the oil storage system, the bearing grease pressure constant device is arranged on the back of the jaw to communicate with the oil path, its cylinder cavity is provided with a valve plate for closing the oil path, a pressure spring for controlling the movement of the valve plate in the cylinder cavity and an adjustment bolt for bearing and limiting the spring in the cylinder cavity, the adjustment bolt is spirally cooperated and fixed with the jaw, the sealing of the valve plate and the jaw is realized by a valve plate O-shaped sealing ring. The constant clearance size of the bearing cavity is kept, the rubber ring is prevented from entering into the bearing cavity to be extruded and damaged by drawing crack, the early abrasion of the bit bearing is prevented and the service life of the bit is prolonged. The bearing grease pressure constant roller bit is suitable for the requirement for drilling the complex geology or deep well.
Description
Technical field
The utility model relates to and a kind ofly is used to explore, a kind of rock bit in the exploitation field of earth and rock works, mining boring, oil and natural gas.
Background technology
Common tool is a rock bit in the exploitation field of exploration, earth and rock works, mining boring, oil and natural gas.Rock bit of the prior art generally comprise rotation drill bit, the bearing of drill bit is installed, the oil storage system of lubricating grease is provided for bearing bore, its oil storage system stops up part by oil storage bag, lubricating cup, gland, O shape circle, back-up ring, screw thread and forms, part is many, and assembling is complicated, the cost height.And in the course of work of rock bit, it is difficult to guarantee pressure constant of lubrication oil, its reason is: the work under bad environment of rock bit, particularly when drilling greater than 3000 meters deep-wells, surface temperature is higher than 100 ℃, complicated geology, drill bit is stressed very big in the process of Drilling hard rock, and frictional resistance increases, and temperature of diamond bit is raise, lubricating grease in the bearing bore expands with the rising of temperature, lubricating grease pressure in the bearing bore will become greatly, when lubricating grease pressure surpasses chamber outer fluid pressure 0.1Mpa, sealing can be squeezed with rubber ring and be pushed into the bearing bore outer ring, cause rubber ring to be subjected to multidirectional pressure and friction, when operating temperature raises, cause the rubber ring premature failure, landwaste enters in the bearing bore, cause the bearing premature wear, drilling life of bit reduces.When probing during shallow well, when temperature was hanged down 100 ℃ or lubricating grease pressure and is lower than environment mud pressure 0.05Mpa on the face of land in, its external pressure was pushed rubber ring to bearing bore inside, and rubber ring equally also can premature failure.Therefore when working environment changed, the bearing clearance size of rock bit can't keep constant in the prior art, the time little when big, rubber ring enters bearing bore easily, produces extruding, and drawing crack damages, cause bit bearing to wear and tear too early, reduce drilling life of bit, its structure needs further to improve.
Summary of the invention
The purpose of this utility model is to provide a kind of bearing grease constant pressure rock bit, it can keep the constant of bearing cavity gap size, avoiding rubber ring to enter bearing bore is extruded, damaged by drawing crack, avoided the bit bearing premature wear, prolonged the application life of drill bit, adapted to and bore complicated geology or deep drilling exploration requirements of one's work.
The technical solution of the utility model is:
A kind of bearing grease constant pressure rock bit, it comprises the tooth pawl and is installed on gear wheel on the tooth pawl by bearing, gear wheel is provided with carbide button, the bearing bore of bearing provides lubricating grease by oil storage system, it is characterized in that: described oil storage system comprises oil sac, lubricating grease in the oil sac is delivered to the oil circuit of bearing bore and the bearing grease constant pressure device of adjusting oil storage system pressure, described bearing grease constant pressure device is arranged on the back side of tooth pawl and with oil circuit and is connected, described bearing grease constant pressure device comprises the cylindrical cavity that is arranged on the tooth pawl back side, cylindrical cavity is connected with oil circuit by oil-through hole, be provided with the valve plate of closing oil path in the cylindrical cavity, compression spring and supporting that the control valve plate moves in cylindrical cavity limit the adjustment bolt of spring in cylindrical cavity, the adjustment bolt cooperates fixing with tooth pawl spiral, described valve plate is by the sealing of valve plate O-ring seals realization with the tooth pawl.
As to further improvement of the utility model, the lubricating cup of oil sac is the monolithic lubricating cup that lubricating cup, gland unite two into one in the described oil storage system.
As to further improvement of the utility model, described monolithic lubricating cup is provided with 3-6 aperture and is connected with oil circuit.
As to further improvement of the utility model, compression spring in the described bearing grease constant pressure device 7 is made by elastomeric material.
As to further improvement of the utility model, the diameter of described oil-through hole is 8-12mm.
The beneficial effects of the utility model are:
Because the utility model is provided with bearing grease constant pressure device, pressure in it the is adjustable fuel-economizing road, the grease temperature when drill bit is worked in bearing bore raises, and pressure is during greater than 0.1Mpa, lubricating grease jacking valve plate 8 has increased oil storage space, plays the effect of bearing grease constant pressure; Grease temperature in bearing bore reduces, pressure is during less than 0.05Mpa, the elastic force of the compression spring 7 in the constant device of being stressed pushes up back valve plate 8, lubricating grease in the constant pressure device chamber is back into bearing bore, seal the passway, play pressurization, remain like this that lubricating grease pressure is higher than environment stress 0.05-0.1Mpa in the bit bearing chamber.So just can keep the constant of bearing gap length, avoid rubber ring to enter bearing bore and be extruded, be damaged, avoid the bit bearing premature wear, prolong the application life of drill bit, adapt to and bore complicated geology or deep drilling exploration requirements of one's work by drawing crack.
Because the utility model reduces the part processing cost with lubricating cup and the synthetic monolithic lubricating cup of gland two parts, has improved the oil storage system efficiency of assembling.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the structural representation of bearing grease constant pressure compensating mechanism of the present utility model
Fig. 3 is the structural representation of monolithic lubricating cup of the present utility model
Among the figure: 1-oil sac, the obstruction of 2-screw thread, 3-monolithic lubricating cup, 4-back-up ring, 5-oil sac O-ring seals, 6-valve plate O-ring seals, 7-compression spring, 8-valve plate, 9-adjust bolt, 10-tooth pawl, 11-bearing sealed ring, 12-gear wheel, 13-carbide button, 14-oil circuit, 15-oil-through hole 16-bearing.
The specific embodiment
Embodiment 1: a kind of bearing grease constant pressure rock bit, as shown in Figure 1-Figure 3, it comprises tooth pawl 10 and is installed on gear wheel 12 on the tooth pawl 10 by bearing 16, gear wheel 12 is provided with carbide button 13, the bearing bore of bearing 16 provides lubricating grease by oil storage system, the bearing bore that bearing 16 is installed is by bearing sealed ring 11 sealings, oil storage system comprises oil sac 1, be connected with oil sac 1 and lubricating grease be delivered to the oil circuit 14 of bearing bore and regulate the bearing grease constant pressure device of oil storage system pressure, oil sac 1 stops up 2 sealings by screw thread, by back-up ring 4 and 5 sealings of oil sac O-ring seals, bearing grease constant pressure device is arranged at the back side of tooth pawl 10 and is connected with oil circuit 14, bearing grease constant pressure device comprises the cylindrical cavity on the back side that is arranged at tooth pawl 10, cylindrical cavity is connected with oil circuit 14 by oil-through hole 15, and the diameter of oil-through hole 15 is φ 12mm.Be provided with the valve plate 8 of closing oil path, compression spring 7 and the adjustment bolt 9 of supporting qualification compression spring 7 in cylindrical cavity that control valve plate 8 moves in the cylindrical cavity in cylindrical cavity, compression spring 7 is made by elastomeric material, adjustment bolt 9 cooperates fixing with the back side spiral of tooth pawl 10, valve plate 8 is by the sealing of valve plate O-ring seals 6 realizations with tooth pawl 10.The lubricating cup of oil sac 1 is the monolithic lubricating cup 3 that lubricating cup, gland unite two into one in the oil storage system, and monolithic lubricating cup 3 is provided with 6 apertures and is connected with oil circuit 14.
Embodiment 2: a kind of bearing grease constant pressure rock bit, as shown in Figure 1-Figure 3, it comprises tooth pawl 10 and is installed on gear wheel 12 on the tooth pawl 10 by bearing 16, gear wheel 12 is provided with carbide button 13, the bearing bore of bearing 16 provides lubricating grease by oil storage system, the bearing bore that bearing 16 is installed is by bearing sealed ring 11 sealings, oil storage system comprises oil sac 1, be connected with oil sac 1 and lubricating grease be delivered to the oil circuit 14 of bearing bore and regulate the bearing grease constant pressure device of oil storage system pressure, oil sac 1 stops up 2 sealings by screw thread, by back-up ring 4 and 5 sealings of oil sac O-ring seals, bearing grease constant pressure device is arranged at the back side of tooth pawl 10 and is connected with oil circuit 14, bearing grease constant pressure device comprises the cylindrical cavity on the back side that is arranged at tooth pawl 10, cylindrical cavity is connected with oil circuit 14 by oil-through hole 15, and the diameter of oil-through hole 15 is φ 8mm.Be provided with the valve plate 8 of closing oil path, compression spring 7 and the adjustment bolt 9 of supporting qualification compression spring 7 in cylindrical cavity that control valve plate 8 moves in the cylindrical cavity in cylindrical cavity, compression spring 7 is made by elastomeric material, adjustment bolt 9 cooperates fixing with the back side spiral of tooth pawl 10, valve plate 8 is by the sealing of valve plate O-ring seals 6 realizations with tooth pawl 10.The lubricating cup of oil sac 1 is the monolithic lubricating cup 3 that lubricating cup, gland unite two into one in the oil storage system, and monolithic lubricating cup 3 is provided with 3 apertures and is connected with oil circuit 14.
Of the present utility model is to work like this:
When vacuum oil is operated in oil sac 1, adjustment bolt 9 in the bearing grease constant pressure device is transferred to bottommost, from the screw thread mouth of monolithic lubricating cup 3, begin oiling then, through the aperture of monolithic lubricating cup 3, oil hole again in bearing bore, wait to fill with the screw thread of screwing on behind the lubricating grease and stop up 2, levelling is adjusted bolt 9 to assigned address again.During drill bit work, grease temperature in bearing bore raises, pressure is during greater than 0.1Mpa, lubricating grease jacking valve plate 8 has increased oil storage space, reduced the pressure in the oil piping system, grease temperature in bearing bore reduces, pressure is during less than 0.05Mpa, the elastic force of the compression spring 7 in the constant pressure device pushes up back valve plate 8, lubricating grease in the constant pressure device chamber is back in the bearing bore, seal the passway, play pressurization, remain like this that lubricating grease pressure is higher than environment stress 0.05-0.1Mpa in the bit bearing chamber, play the effect of bearing grease constant pressure.
Claims (5)
1. bearing grease constant pressure rock bit, it comprises the tooth pawl and is installed on gear wheel on the tooth pawl by bearing, gear wheel is provided with carbide button, the bearing bore of bearing provides lubricating grease by oil storage system, it is characterized in that: described oil storage system comprises oil sac, lubricating grease in the oil sac is delivered to the oil circuit of bearing bore and the bearing grease constant pressure device of adjusting oil storage system pressure, described bearing grease constant pressure device is arranged on the back side of tooth pawl and with oil circuit and is connected, described bearing grease constant pressure device comprises the cylindrical cavity that is arranged on the tooth pawl back side, cylindrical cavity is connected with oil circuit by oil-through hole, be provided with the valve plate of closing oil path in the cylindrical cavity, compression spring and supporting that the control valve plate moves in cylindrical cavity limit the adjustment bolt of spring in cylindrical cavity, the adjustment bolt cooperates fixing with tooth pawl spiral, described valve plate is by the sealing of valve plate O-ring seals realization with the tooth pawl.
2. bearing grease constant pressure rock bit according to claim 1, it is characterized in that: the oil sac in the described oil storage system comprises lubricating cup, described lubricating cup is the monolithic lubricating cup that lubricating cup, gland unite two into one.
3. bearing grease constant pressure rock bit according to claim 1 is characterized in that: the compression spring in the described bearing grease constant pressure device is made by elastomeric material.
4. bearing grease constant pressure rock bit according to claim 1 is characterized in that: the diameter of oil-through hole is 8-12mm in the described oil storage system.
5. bearing grease constant pressure rock bit according to claim 2 is characterized in that: described monolithic lubricating cup is provided with 3-6 aperture and is connected with oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202109519U CN201843523U (en) | 2010-06-01 | 2010-06-01 | Bearing grease pressure constant roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202109519U CN201843523U (en) | 2010-06-01 | 2010-06-01 | Bearing grease pressure constant roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843523U true CN201843523U (en) | 2011-05-25 |
Family
ID=44038416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202109519U Expired - Fee Related CN201843523U (en) | 2010-06-01 | 2010-06-01 | Bearing grease pressure constant roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843523U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619471A (en) * | 2012-04-29 | 2012-08-01 | 江西飞龙钻头制造有限公司 | Lubrication system of roller bit |
| CN107529581A (en) * | 2017-09-06 | 2018-01-02 | 中国石油大学(华东) | The wear-resistant drag reduction drill bit of vibration damping |
| CN115823467A (en) * | 2022-12-26 | 2023-03-21 | 天津立林钻头有限公司 | Novel oil injection structure and method for roller bit |
-
2010
- 2010-06-01 CN CN2010202109519U patent/CN201843523U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619471A (en) * | 2012-04-29 | 2012-08-01 | 江西飞龙钻头制造有限公司 | Lubrication system of roller bit |
| CN102619471B (en) * | 2012-04-29 | 2015-05-13 | 江西飞龙钻头制造有限公司 | Lubrication system of roller bit |
| CN107529581A (en) * | 2017-09-06 | 2018-01-02 | 中国石油大学(华东) | The wear-resistant drag reduction drill bit of vibration damping |
| CN115823467A (en) * | 2022-12-26 | 2023-03-21 | 天津立林钻头有限公司 | Novel oil injection structure and method for roller bit |
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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: 20110525 Termination date: 20150601 |
|
| EXPY | Termination of patent right or utility model |