CN201810210U - High-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit - Google Patents
High-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit Download PDFInfo
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- CN201810210U CN201810210U CN2010205612637U CN201020561263U CN201810210U CN 201810210 U CN201810210 U CN 201810210U CN 2010205612637 U CN2010205612637 U CN 2010205612637U CN 201020561263 U CN201020561263 U CN 201020561263U CN 201810210 U CN201810210 U CN 201810210U
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- slide block
- elastic
- big
- elastic slide
- resistant
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Abstract
The utility model discloses a high-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit, which comprises a cone and a cone leg. The cone leg is provided with a large journal and a small journal; and the cone is correspondingly provided with a large shaft hole and a small shaft hole, the inner wall of the large shaft hole is provided with a roller path, the large shaft hole and the small shaft hole of the cone are respectively sleeved on the large journal and the small journal of the cone leg, at least two elastic slide blocks are arranged in the roller path of the inner wall of the large shaft hole, the sides of the elastic slide blocks facing the inner wall of the large shaft hole are provided with two grooves along the axial line of the large shaft hole, a roller is arranged in each groove, and a slide block or an isolating roller is arranged between two rollers corresponding to each elastic slide block. The utility model has the advantages that the elastic slide blocks and the rollers can produce pre-tightening force between the shaft holes and the journals, and most of the surface between the journals of the cone leg and the shaft holes of the cone is under pressure, thus the pressure between the shaft holes and the journals is reduced, a bearing can bear a larger load, and the seal and alloy teeth of the cone bit can be well protected.
Description
Technical field
The utility model relates to a kind of rock bit that is used for oil drilling and geological prospecting, relates in particular to a kind of high pressure resistant and impact resistant roller bit with high rotating speed.
Background technology
Be extensive use of rock bit at oil drilling and geological exploration field at present, as shown in Figure 1, rock bit mainly is made up of gear wheel 2 and bit leg 4 two parts, and gear wheel 2 engages with bit leg by sliding bearing or rolling bearing structure.Bit leg 4 is provided with big axle journal 41 and pilot pin 42, gear wheel 2 correspondences are provided with big axis hole 21 and little axis hole 22, the big axis hole 21 of gear wheel and little axis hole 22 are set on the big axle journal 41 and pilot pin 42 of tooth axle, and, also promptly be locked on the bit leg 4 by gear wheel 2 being locked on the big axle journal 41 at a circle annulate shaft locking ball 8 that is provided with near big axle journal end.The annulus raceway of locking ball 8 is axle journal ball half raceways of forming of the circular ring type semi-circular section groove by big axle journal 41 outsides and is closed to hold together to form by axis hole ball half raceway that the circular ring type semi-circular section groove of corresponding setting on the big axis hole hole wall of gear wheel forms.Be provided with rubber seal 3 between gear wheel and bit leg, stud with carbide button 1 on the gear wheel 2, during rock bit work, gear wheel 2 rotatablely moves around big axle journal of bit leg and pilot pin, makes the carbide button 1 in turn broken rock on the gear wheel carry out oil drilling or geological prospecting borehole.
No matter sliding bearing structure rolling bearing structure or the skid bearing arrangement all is the rigid bearing structure all has the gap about 0.1mm between the bearing.When bit leg journel had downward active force, the bottom of the bottom of bit leg journel and gear wheel endoporus contacted miniature deformation takes place, and power is big more, and deformation is big more, and contact area is big more.Because bit leg journel and gear wheel endoporus all are rigidity, deformation can be very not big, so restricted the contact area between bit leg journel and the gear wheel endoporus, make contact area just lifting surface area cross-wise direction see major part remain on 60 the degree scopes in, and along with the change from the bottom is far away, suffered power also sharply descends, and it is very big in the power of bottom, caused power high concentration between bit leg journel and the gear wheel endoporus in a very little scope of bottom, the drawback of Chan Shenging has therefrom: 1, and the full payload that rock bit can be born is little; 2, power is too concentrated and easily the gear wheel endoporus is damaged; 3, unfavorable to sealing system, major part all is the gap between bit leg journel and the gear wheel endoporus, and gear wheel lacks constraint, can produce strenuous vibration, and the gear wheel per minute can shake about 600 times, and sealing system is caused very major injury; 4, the gear wheel broken teeth there is certain influence.
The utility model content
The utility model improves the rock bit of existing rigid bearing structure, and the rock bit of the high pressure resistant impact-resistant elastic bearing structure of a kind of high rotating speed is provided.
The high pressure resistant shock-resistant elastic rolling bearing rock bit of a kind of high rotating speed comprises gear wheel, bit leg, and bit leg is provided with big axle journal and pilot pin; The gear wheel correspondence is provided with big axis hole and little axis hole, described big shaft hole inner wall is provided with raceway, the big axis hole of gear wheel and little axis hole are set on the big axle journal and pilot pin of bit leg, in the raceway of big shaft hole inner wall at least two elastic slide blocks are housed, elastic slide block is distributed with two grooves towards a side of big shaft hole inner wall along macro-axis axially bored line direction, roller all is housed in each groove, slide block is housed between two rollers corresponding with each elastic slide block or isolates roller, big shaft hole inner wall forms rolling friction with the elastic slide block outside by roller and cooperates, and the big axle journal outer wall of bit leg cooperates with the inboard formation of elastic slide block sliding friction.
Described elastic slide block is subjected to preload pressure when packing slideway into, the deformation that elastic slide block produced is about half of its ultimate deformation.The size of preload pressure can be regulated by the thickness and the width that change elastic slide block, and assembling back elastic slide block can continue to take place elastic deformation when stressed between the palm of roller bits.
The raceway of described big shaft hole inner wall is the annular groove that distributes around the macro-axis axially bored line, and described elastic slide block is an arc watt type, and all elastic slide blocks are pieced together successively and are placed in the described raceway.
Elastic slide block can adopt anti abrasive metal material, and the inner curve radius of elastic slide block and outside subsequent corrosion can change when being subjected to preload pressure, thereby produces pretightning force.
Slide block and isolation roller generally also adopt anti abrasive metal material.
Described elastic slide block lays respectively at two edges of elastic slide block towards two grooves of a side of big shaft hole inner wall, and trench bottom surfaces matches with the roller outer wall.
The position of described big axle journal between elastic slide block and ball road has the assembling chamfering, is convenient to the installation in position of bit leg.
Obtain suitable preload pressure in order to utilize the deformation that elastic slide block produces, the inner curve radius of each elastic slide block is greater than the big axle journal radius of bit leg, and elastic slide block outside subsequent corrosion is greater than gear wheel macro-axis pore radius simultaneously.Or the inner curve radius of each elastic slide block is less than the big axle journal radius of bit leg, and elastic slide block outside subsequent corrosion is less than gear wheel macro-axis pore radius simultaneously.
Described elastic slide block is 6～16, and the quantity of elastic slide block can be adjusted according to big shaft hole diameter and elastic slide block size certainly, is 8～12 as preferred general described elastic slide block.
The beneficial effects of the utility model are: bit leg journel does not directly contact with the gear wheel endoporus, but cooperate indirectly by the circle elastic slide block and the roller that are centered around bit leg journel, elastic slide block also exists deformation and pressure under the situation that is not having external applied load between bit leg journel and the roller.The no gap of having realized bit leg and gear wheel cooperates, gear wheel endoporus all sites all has supporting role by elastic slide block and roller to bit leg journel, the peak load that drill bit can be born is more than 2 times of original rigid bearing, elastic bearing under the identical situation of load is because pressure is little, so drill speed can be higher, the drill bit operation is more steady.
Description of drawings
Fig. 1 a is the structural representation of the rock bit of existing roller rolling bearing syndeton;
Fig. 1 b is along A-A line sectional view among Fig. 1 a;
Fig. 2 a is the structural representation that existing skid bearing connects;
Fig. 2 b is along A-A line sectional view among Fig. 2 a;
Fig. 3 is an overall structure schematic diagram of the present utility model;
Fig. 4 a is the partial structurtes schematic diagram of the utility model rock bit;
Fig. 4 b is along A-A line sectional view among Fig. 4 a;
Fig. 4 c is a B position enlarged drawing among Fig. 4 a;
Fig. 5 a is the structural representation of elastic slide block;
Fig. 5 b is along A-A line sectional view among Fig. 5 a;
Fig. 5 c is the vertical view of Fig. 5 a;
Among the figure: 1 carbide button, 2 gear wheels, 21 big axis holes, 22 little axis holes, 3 rubber seal, 4 bit legs, 41 big axle journals, 42 pilot pins, 5 oil supply systems, 6 pads, 71 rollers, 72 slide blocks, 73 elastic slide blocks, 8 locking balls, 9 assembling chamferings.
The specific embodiment
Referring to accompanying drawing, a kind of high pressure resistant and impact resistant roller bit with high rotating speed of the utility model, comprise the gear wheel 2, the bit leg 4 that stud with carbide button 1, bit leg 4 is provided with big axle journal 41 and pilot pin 42, gear wheel 2 correspondences are provided with big axis hole 21 and little axis hole 22, and the big axis hole 21 of gear wheel and little axis hole 22 are set on the big axle journal 41 and pilot pin 42 of bit leg journel, also are provided with oil supply system 5 on the bit leg 4, rubber seal 3, pad 6 and locking ball 8.
It is raceway that big axis hole 21 inwalls are distributed with annular groove around big axis hole 21 axis, and a plurality of elastic slide blocks 73 are housed in the raceway, and elastic slide block 73 is an arc watt type, pieces together being placed in the raceway successively.
The utility model rock bit operating principle is as follows:
The conventional rigid sliding bearing just has gap, the 0.1mm left and right sides in the gear wheel easy to assembly about the big 0.2mm of boring ratio bit leg journel between gear wheel endoporus and the bit leg journel.When rock bit work is stressed, rigid bearing system compresses deflection is about 0.03mm, so there have most of area not contact between bit leg journel and the gear wheel endoporus to be stressed, it is very little to contact stressed area, causes stressed concentrating, contact site pressure is big, gear wheel is unstable on bit leg journel, and vibrations do not have constraint, to bearing application life, in the sealing system life-span, the life-span of carbide button all can have a negative impact.
And the utility model bit leg journel does not directly contact with the gear wheel endoporus, but by about 12 elastic slide block 73 and roller 71 and slide block 72 and the mediate contact of gear wheel endoporus of a circle that is centered around bit leg journel; Also there be compressive deformation and the compression pressure about 0.15mm in elastic slide block 73 under the situation that is not having external applied load between bit leg journel and the gear wheel endoporus, roller 71 becomes sliding friction and is rolling friction, has improved the rotating speed of drill bit greatly; 72 of slide blocks under extreme conditions play the effect of protection elastic slide block 73.The total deformation of elastic slide block is about 0.25mm, be far longer than the gap, the 0.1mm left and right sides between gear wheel endoporus and the bit leg journel, the no gap of so just having realized bit leg and gear wheel cooperates, gear wheel endoporus all sites all has supporting role by elastic slide block and roller to bit leg journel, the peak load that drill bit can be born is more than 2 times of original rigid bearing, elastic bearing under the identical situation of load is because pressure is little, so drill speed can be higher, the drill bit operation is more steady.
The above only is a preferred embodiment of the present utility model, is not shape material of the present utility model and structure are done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed comprises gear wheel, bit leg, and bit leg is provided with big axle journal and pilot pin; The gear wheel correspondence is provided with big axis hole and little axis hole, it is characterized in that, described big shaft hole inner wall is provided with raceway, the big axis hole of gear wheel and little axis hole are set on the big axle journal and pilot pin of bit leg, in the raceway of big shaft hole inner wall at least two elastic slide blocks are housed, elastic slide block is distributed with two grooves towards a side of big shaft hole inner wall along macro-axis axially bored line direction, roller all is housed in each groove, slide block is housed between two rollers corresponding with each elastic slide block or isolates roller, big shaft hole inner wall cooperates the big axle journal outer wall of bit leg and elastic slide block inner slide frictional fit with the elastic slide block outside by the roller rolling friction.
2. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 1 is characterized in that, the raceway of described big shaft hole inner wall is the annular groove that distributes around the macro-axis axially bored line.
3. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 2 is characterized in that described elastic slide block is an arc watt type, and all elastic slide blocks are pieced together successively and are placed in the described raceway.
4. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 3, it is characterized in that, described elastic slide block lays respectively at two edges of elastic slide block towards two grooves of a side of big shaft hole inner wall, and trench bottom surfaces matches with the roller outer wall.
5. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 4 is characterized in that, described elastic slide block produces deformation by imposing preload pressure when packing raceway into.
6. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 4 is characterized in that described big axle journal end has ball road, and the big position of axle journal between elastic slide block and ball road has the assembling chamfering.
7. according to the high pressure resistant shock-resistant elastic rolling bearing rock bit of each described high rotating speed of claim 3～5, it is characterized in that, the inner curve radius of each elastic slide block is greater than the big axle journal radius of bit leg, and elastic slide block outside subsequent corrosion is greater than gear wheel macro-axis pore radius simultaneously.
8. according to the high pressure resistant shock-resistant elastic rolling bearing rock bit of each described high rotating speed of claim 3～5, it is characterized in that, the inner curve radius of each elastic slide block is less than the big axle journal radius of bit leg, and elastic slide block outside subsequent corrosion is less than gear wheel macro-axis pore radius simultaneously.
9. according to the high pressure resistant shock-resistant elastic rolling bearing rock bit of each described high rotating speed of claim 1～6, it is characterized in that described elastic slide block is 6～16.
10. the high pressure resistant shock-resistant elastic rolling bearing rock bit of high rotating speed according to claim 9 is characterized in that described elastic slide block is 8～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205612637U CN201810210U (en) | 2010-10-14 | 2010-10-14 | High-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205612637U CN201810210U (en) | 2010-10-14 | 2010-10-14 | High-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810210U true CN201810210U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205612637U Expired - Fee Related CN201810210U (en) | 2010-10-14 | 2010-10-14 | High-speed, high-pressure-resistant, shock-resistant and elastic rolling bearing cone bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956528A (en) * | 2010-10-14 | 2011-01-26 | 天津立林钻头有限公司 | Roller bit of elastic rolling bearing with high rotation speed, high pressure resistance and impact resistance |
-
2010
- 2010-10-14 CN CN2010205612637U patent/CN201810210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956528A (en) * | 2010-10-14 | 2011-01-26 | 天津立林钻头有限公司 | Roller bit of elastic rolling bearing with high rotation speed, high pressure resistance and impact resistance |
| CN101956528B (en) * | 2010-10-14 | 2014-12-10 | 天津立林钻头有限公司 | Roller bit of elastic rolling bearing with high rotation speed, high pressure resistance and impact resistance |
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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: 20110427 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |