CN110469271A - Tricone bit and preparation method thereof - Google Patents
Tricone bit and preparation method thereof Download PDFInfo
- Publication number
- CN110469271A CN110469271A CN201910788696.1A CN201910788696A CN110469271A CN 110469271 A CN110469271 A CN 110469271A CN 201910788696 A CN201910788696 A CN 201910788696A CN 110469271 A CN110469271 A CN 110469271A
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- China
- Prior art keywords
- connector
- oil storage
- gear wheel
- guide pipe
- oil guide
- Prior art date
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- Granted
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 72
- 230000001050 lubricating effect Effects 0.000 claims abstract description 25
- 239000004519 grease Substances 0.000 claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000013589 supplement Substances 0.000 claims abstract description 3
- 210000000515 tooth Anatomy 0.000 claims description 28
- 238000005520 cutting process Methods 0.000 claims description 25
- 210000003781 tooth socket Anatomy 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920000297 Rayon Polymers 0.000 claims description 5
- 238000005255 carburizing Methods 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of tricone bit and preparation method thereof, tricone bit includes connector and the bit leg that is welded as a whole with connector, oil storage hole is offered on connector, and the screw thread of connector outer surface covers the lower section being open to oil storage hole；For bit leg by bearing installation there are three gear wheel, the angle between adjacent gear wheel is identical；It is provided with the intracavitary external pressure of equalizer bearing on connector and supplements the oil storage compensation system of bearing bore lubricating grease and gear wheel is rinsed and the spraying system of auxiliary rock；Oil storage compensation system includes the Fuel Tanking Unit being installed in oil storage hole, bearing sealed ring and is provided with the conduction pipe net of the lubricating grease importing bearing bore in Fuel Tanking Unit on bit leg and connector；Tricone bit that this programme provides and preparation method thereof passes through the setting of spraying system and oil storage compensation system, so that the cost and production efficiency of drill bit, working efficiency and service life are improved well.
Description
Technical field
The present invention relates to a kind of oil drilling drill bits, and in particular to a kind of tricone bit and preparation method thereof.
Background technique
Gear wheel in drill bit is when rotation is crushed rock, in order to deal with the high pressure formed by drilling fluid in shaft bottom
Power generally has an oil storage compensating device in bit leg back designs, and its task is to guarantee that it is good that sealing ring and bearing have
Operating condition, to improve the service life of sealing ring and bearing.Oil storage compensating device, bearing sealed ring and oil duct constitute storage
Oil seal compensation system works so that bearing be guaranteed to be under good lubricating condition and sealing state, improves bit bearing
Service life.
Multiple gear wheels can be generally arranged to improve drilling efficiency in existing drill bit, in order to guarantee bearing at each gear wheel and
The service life of sealing ring needs to be respectively provided with an oil storage sealing compensation system on each bit leg, and multiple oil storage sealings are arranged
After compensation system, needs to be lubricated rouge inspection to each compensation system respectively in subsequent use process and lubricating grease compensates,
So that lubricating grease inspection and lubricating grease compensate complex procedures.
Summary of the invention
For above-mentioned deficiency in the prior art, tricone bit provided by the invention and preparation method thereof solves lubrication
The problem of rouge inspection and lubricating grease compensation complex procedures.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
In a first aspect, providing a kind of tricone bit comprising connector and the bit leg being welded as a whole with connector, even
Oil storage hole is offered on connector, and the screw thread of connector outer surface covers the lower section being open to oil storage hole；Bit leg is pacified by bearing
For dress there are three gear wheel, the angle between adjacent gear wheel is identical；
It is provided with the intracavitary external pressure of equalizer bearing on the connector and supplements the oil storage compensation system of bearing bore lubricating grease
And to gear wheel carry out it is cooling, rinse and the spraying system of auxiliary rock；The oil storage compensation system includes being installed in oil storage hole
Fuel Tanking Unit, bearing sealed ring and be provided on bit leg and connector and the lubricating grease in Fuel Tanking Unit is imported into bearing bore leading
Flow grid；Fuel Tanking Unit includes mounting box, lower cylinder body and upper cylinder body, and lower cylinder body is fixedly installed in mounting box bottom, mounting box
The step of bottom makes the bottom of lower cylinder body and the bottom of mounting box form a pressure transmission gap；Pressure transmission gap is by being installed on connection
Pipeline in the through slot of head is connected to spraying system, and pipeline is provided with polytetrafluoroethylene film adjacent to spraying system section；Lower cylinder body
It is inside placed with the pressure release oil storage bag that top side wall has pin hole, pressure release oil storage bag is fixed in lower cylinder body by upper cylinder body, upper cylinder body
And a closed oil storage cavity is constituted with pressure release oil storage bag；
Conduction pipe net includes being provided with the first oil guide pipe be connected on connector with upper cylinder body, is set to connector welding
Opened up on the bit leg of end face and the annular diversion trench be connected with the first oil guide pipe and each gear wheel installation side and annular diversion trench
It is connected to and lubricating grease is imported into the second oil guide pipe at bearing.
Second aspect provides a kind of preparation method of tricone bit comprising following steps:
Casting formed the internal connector blank with sprue, have thereon sprue and secondary channels bit leg blank and
There is with inner hole and outer surface the gear wheel blank of several tooth sockets thereon；
The oil storage hole of connector short transverse outer surface is processed, and is processed and sprue in the bottom of oil storage hole
The through slot of connection；
The screw thread of connector outer surface is processed, and by screw thread process to below oil storage hole, post-processing connector
Ring-shaped step slot on larger-size end face, and the first oil guide pipe being connected to oil storage hole is processed in ring-shaped step slot；
A horizontal oil guide pipe being parallel to the horizontal plane is processed in bit leg palm back, and is processed and every from the end face of bit leg
The oblique oil guide pipe of horizontal oil guide pipe connection；
The place of not carburizing is uniformly applied with certain thickness coating before gear wheel heat treatment, and avoids coating in carburizing
It falls off in the process, gear wheel, connector and bit leg is heat-treated and is finished later；
Pipeline is placed in through slot, mounting box part is placed in oil storage hole later, adjustment mounting box fills oil storage
The oil outlet set is aligned with the first oil guide pipe, later clamping mounting box；
It is placed on ring-shaped step slot after ring packing washer is coated viscose, adjusting annular seal washer makes second to lead
Oil pipe is connected to by oil-through hole and the annular diversion trench inside opened up on ring packing washer, later welds connector and bit leg
Shape is integral；
Cutting tooth is pressed into the tooth socket of gear wheel, and is interference fitted cutting tooth and tooth socket；It is placed at bearing seal position
Gear wheel is locked on bit leg by steel ball by sealing ring later.
The invention has the benefit that oil storage compensation system is arranged on the connector of drill bit this programme, and pass through company
The annular diversion trench of weld end face setting imports lubricating grease in the second oil guide pipe in each bit leg, passes through this kind of structure
Setting, such that regardless of several gear wheels are arranged, an oil storage compensation system can be realized as the lubrication of all bearing bores, reduce
The quantity of oil storage compensation system, to reduce the complexity of lubricating grease inspection and lubricating grease compensation process；
In addition, the reduction of oil storage compensation system quantity, can simplify the manufacturing process of entire bit lubrication system, so as to
To improve the processing efficiency of entire drill bit and reduce processing cost.
The screw thread of connector outer surface is covered to unique setting of oil storage hole opening lower section, can be connected in connector and drill string
When connecing, the opening of Fuel Tanking Unit is sealed, the landwaste damage upper cylinder body cut when to avoid drilling bit high-speed rotary makes
Fuel Tanking Unit is obtained lubricating grease leakage occur and influence the lubrication of bearing and the internal and external pressure balance of sealing ring.
This programme can be made in lower cylinder body by the mutual cooperation of pressure release pin hole, pressure transmission gap and pipeline on Fuel Tanking Unit
Chamber is connected to the drilling fluid runner in connector, so that the air pressure in pressure release oil storage bag is always and at the air pressure in drilling fluid runner
In equilibrium state；The wherein setting of polytetrafluoroethylene film can pass through in order to the gas of equilibrium air pressure, while can also avoid
Drilling fluid, which enters, influences air pressure balance in lower cylinder body.
After cutting tooth uses diamond composite teeth, drill bit can be made both have the high rigidity of diamond, high-wearing feature with
Thermal conductivity, and intensity and toughness with hard alloy.
Detailed description of the invention
Fig. 1 is the partial sectional view of tricone bit.
Fig. 2 is the enlarged drawing in the portion A in Fig. 1.
Fig. 3 is the cross-sectional view of spray head.
Wherein, 1, connector；11, spraying system；111, side runner；112, secondary channels；113, sprue；12, annular table
Rank slot；13, ring packing washer 13；2, bit leg；21, bit leg mounting portion；211, the second oil guide pipe；212, arc joint face；22,
Sealing ring；23, bearing；3, gear wheel；31, cutting tooth；4, Fuel Tanking Unit；41, mounting box；411, upper cylinder body；412, lower cylinder body；
4121, pressure transmission gap；413, pressure release oil storage bag；414, step；42, pipeline；421, polytetrafluoroethylene film；43, the first Oil Guide
Pipe.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As shown in Figure 1, tricone bit includes connector 1 and the bit leg being welded as a whole with connector 12, on connector 1
Oil storage hole is offered, and the screw thread of 1 outer surface of connector covers the lower section being open to oil storage hole；Bit leg 2 is installed by bearing 23
There are three gear wheel 3, the angle between adjacent gear wheel 3 is identical.
The oil storage compensation system and the spray that cooling flushing is carried out to gear wheel 3 that bearing 23 is lubricated are provided on connector 1
Penetrate system 11；Oil storage compensation system includes the Fuel Tanking Unit 4 being installed in oil storage hole and be provided on bit leg 2 and connector 1 will
Lubricating grease in Fuel Tanking Unit 4 imports the conduction pipe net at bearing 23.
The length for the screw thread that this programme is connect due to connector 1 with external drill string is covered to the lower section of oil storage hole opening, this
After Fuel Tanking Unit 4 is mounted in oil storage hole by sample, the opening of Fuel Tanking Unit 4 can be sealed, to avoid drilling bit high-speed rotation
The landwaste damage upper cylinder body 411 cut when turning, so that the lubrication that lubricating grease is revealed and influences bearing 23 occurs in Fuel Tanking Unit 4
With the internal and external pressure balance of sealing ring 22.
As shown in Fig. 2, Fuel Tanking Unit 4 includes mounting box 41, lower cylinder body 412 and upper cylinder body 411, the fixed peace of lower cylinder body 412
Loaded on 41 bottom of mounting box, the step 414 of 41 bottom of mounting box forms the bottom of lower cylinder body 412 and the bottom of mounting box 41
One pressure transmission gap 4121；Pipeline 42 in through slot of the pressure transmission gap 4121 by being installed on connector 1 is connected to spraying system 11,
Pipeline 42 is provided with polytetrafluoroethylene film 421 adjacent to 11 sections of spraying system.
The wherein setting of polytetrafluoroethylene film 421 can pass through in order to the gas of equilibrium air pressure, while can also avoid
Drilling fluid, which enters, influences air pressure balance in lower cylinder body 412.
The pressure release oil storage bag 413 that top side wall has pin hole is placed in lower cylinder body 412, upper cylinder body 411 is by pressure release oil storage
Capsule 413 is fixed in lower cylinder body 412, and upper cylinder body 411 simultaneously constitutes a closed oil storage cavity with pressure release oil storage bag 413.
Pressure release oil storage bag 413 of rubber material due to being made, and in high-speed rotation process, pressure release oil storage bag 413 is on ground
Lubricating grease is expelled to water conservancy diversion when shrinking to periodic contractile, elongation occur under the active force of drill bit by layer from oil storage cavity
Grid, to realize to the lubrication of bearing 23 and the internal and external pressure balance of sealing ring 22.
Multiple widgets of the Fuel Tanking Unit 4 of this programme, which are all concentrated, to be fixed in mounting box 41, can be incited somebody to action in this way in outside
It after Fuel Tanking Unit 4 assembles, is directly mounted as a whole in oil storage hole, so that assembling is very convenient, is in addition carried out more in lubricating grease
It changes or when mounting box 41 repairs, whole taking-up can also be carried out, so that replacement lubricating grease and repairing also very convenient.
In addition, oil storage compensation system is arranged on the connector 1 of drill bit this programme, and pass through the welding ends of connector 1
The annular diversion trench of face setting imports lubricating grease in the second oil guide pipe 211 in each bit leg 2, passes through the setting of this kind of structure
Regardless of being arranged several gear wheels 3, an oil storage compensation system can be realized as all bearings 23 lubrication and sealing ring 22 it is inside and outside
Pressure balance, reduces the quantity of oil storage compensation system, to reduce the complexity of lubricating grease inspection and lubricating grease compensation process
Property.
Conduction pipe net includes being provided with the first oil guide pipe 43 be connected on connector 1 with upper cylinder body 411, is set to connection
First 1 welding end surface simultaneously connects with what is opened up on the annular diversion trench and each bit leg 2 of the conducting of the first oil guide pipe 43 with annular diversion trench
Lead to and lubricating grease is imported into the second oil guide pipe 211 at bearing 23.
Referring again to FIGS. 2, annular diversion trench includes being opened in the ring-shaped step slot 12 of 1 welding end surface of connector and being placed in
The ring packing washer 13 of annular oil guide pipe is formed in 12 proximate end face of ring-shaped step slot, for sealing annular step groove 12；
Second oil guide pipe 211 is connected to by oil-through hole and the annular diversion trench inside opened up on ring packing washer 13.
When connector 1 and bit leg 2 are welded, viscose is coated on ring packing washer 13 first, it is later that annular is close
Seal washer 13 is placed in ring-shaped step slot 12, and rotary annular seal washer 13 is so that oil-through hole thereon and third oil guide pipe
Import alignment；It is after viscose parches that connector 1 and the welding of bit leg 2 shape is integral.
When implementation, this programme preferably the second oil guide pipe 211 includes oblique oil guide pipe and the horizontal oil guide pipe being parallel to the horizontal plane,
Oblique oil guide pipe is connected with horizontal oil guide pipe, and horizontal oil guide pipe is slapped backside adjacent to bit leg 2 and sealed by gasket, and the other end extends
To the ball grooves of bearing 23.
In one embodiment of the invention, spraying system 11 includes the sprue 113 through connector 1 and bit leg 2, main
Runner 113 is connected with three secondary channels 112 and three side runners 111 in its neighbouring water outlet；Secondary channels 112 and sprue 113
Between the angle that is formed less than 30 °, and the extensions of every secondary channels 112 be located at it is neighbouring its gear wheel 3 the cutting of root first lap
Between tooth 31 and the second circle cutting tooth 31；The water outlet of every side runner 111 shape between two neighboring bit leg mounting portion 21
At arc joint face 212 in.
The sprue 113 of this programme setting, the drilling fluid sprayed can beat the top in three gear wheels 3, secondary channels 112
The setting of angle, the drilling fluid that it is sprayed are rinsed 3 middle and lower part of gear wheel adjacent to it, and side runner 111 is set
It sets, drilling fluid can be rinsed 3 root of gear wheel from ejection between adjacent bit leg mounting portion 21, pass through the stream of three types
The mutual cooperation in road can form biggish scouring force to 3 surface of gear wheel, can be adhered to gear wheel to avoid landwaste when the work of gear wheel 3
On 3, the drilling ability of gear wheel 3 is influenced.
As shown in figure 3, spray head is mounted on the preferred sprue 113 of this programme and the water outlet of secondary channels 112, on spray head
Annular apopore towards spray head ring edge tilt；It, can be with after the annular apopore of nozzle is arranged using the above structure
Make water flow sprinkling more evenly, while the water that sprue 113 can also be made to spray is more towards 3 direction of gear wheel.
Wherein, several criss-cross and flushed channels of the depth between 0.1~0.2cm are also provided on gear wheel 3 (in figure
It is not shown), the setting of flushed channel can make the water sprayed from spray head equably trickle on 3 surface of gear wheel, can further avoid
Landwaste is adhered to 3 surface of gear wheel.
As shown in Figure 1, all cutting tooths 31 of gear wheel 3 are diamond composite teeth, the cutting tooth 31 of gear wheel 3 is pressed into gear wheel
In the tooth socket that 3 curved surfaces open up, and it is interference fitted with tooth socket；Cutting tooth 31 is located inside tooth socket and is divided into cylindrical body, is located at card
Be divided into outside slot removal pinnacle conical boss, and cutting tooth 31 be located at tooth socket inner part length be greater than positioned at tooth socket outer portion it is long
Degree.
Cutting tooth 31 is located at tooth socket inner part length and is greater than the setting for being located at tooth socket outer portion length, and cutting tooth can be improved
31 are located at the stability in tooth socket, to avoid under the action of the centrifugal force, cutting tooth 31 falls off when rotating at high speed；In addition should
The setting of length, in high-speed cutting, due to be located at tooth socket outer portion it is shorter, can to avoid cutting rock mass when occur being broken show
As；The setting that cutting tooth 31 is located at tooth socket outer portion shape can increase the contact area with rock mass, so that overall wear resistance obtains
To increasing substantially.
So far, the description to three gear wheels, 3 drill bit structure part is completed, below then to the preparation side of three gear wheels, 3 drill bit
Method is illustrated.
This programme also provides a kind of preparation method of tricone bit comprising following steps:
Casting forms internal 1 blank of connector with sprue 113, has sprue 113 and secondary channels 112 thereon
2 blank of bit leg and 3 blank of gear wheel with inner hole and outer surface thereon with several tooth sockets；
The oil storage hole of 1 short transverse outer surface of connector is processed, and is processed and mainstream in the bottom of oil storage hole
The through slot that road 113 is connected to；
The screw thread of 1 outer surface of connector is processed, and by screw thread process to below oil storage hole, post-processing connector
Ring-shaped step slot 12 on 1 larger-size end face, and process first be connected to oil storage hole in ring-shaped step slot 12 and lead
Oil pipe 43；
Back is slapped in bit leg 2 and processes a horizontal oil guide pipe being parallel to the horizontal plane, and from the processing of the end face of bit leg 2 and often
The oblique oil guide pipe of the horizontal oil guide pipe connection of item；
Gear wheel 3 uniformly applies in the place of not carburizing with certain thickness coating before being heat-treated, and coating is avoided to seep
It falls off during carbon, gear wheel 3, connector 1 and bit leg 2 is heat-treated and is finished later；
Pipeline 42 is placed in through slot, 41 part of mounting box is placed in oil storage hole later, adjustment mounting box 41 makes
The oil outlet of Fuel Tanking Unit 4 is aligned with the first oil guide pipe 43, later clamping mounting box 41；
It is placed on ring-shaped step slot 12 after ring packing washer 13 is coated viscose, adjusting annular seal washer 13 makes
Second oil guide pipe 211 is connected to by oil-through hole and the annular diversion trench inside opened up on ring packing washer 13, later will connection
First 1 is integral with the welding of bit leg 2 shape；
Cutting tooth 31 is pressed into the tooth socket of gear wheel 3, and makes cutting tooth 31 and tooth socket tight fit；It is put at bearing seal position
Sealing ring 22 is set, gear wheel 3 is locked on bit leg 2 by steel ball later.
In conclusion tricone bit that this programme provides and preparation method thereof passes through spraying system 11 and oil storage compensation system
The setting of system, so that the cost and production efficiency of drill bit, working efficiency and service life are improved well.
Claims (8)
1. tricone bit, which is characterized in that including connector and the bit leg being welded as a whole with connector, on the connector
Oil storage hole is offered, and the screw thread of connector outer surface covers the lower section being open to oil storage hole；The bit leg is installed by bearing
There are three gear wheel, the angle between adjacent gear wheel is identical；
It is provided with the intracavitary external pressure of equalizer bearing on the connector and supplements the oil storage compensation system of bearing bore lubricating grease and right
Gear wheel carry out it is cooling, rinse and the spraying system of auxiliary rock；The oil storage compensation system includes the storage being installed in oil storage hole
Oily device, bearing sealed ring and be provided on bit leg and connector by Fuel Tanking Unit lubricating grease import bearing bore diversion pipe
Road net；
The Fuel Tanking Unit includes mounting box, lower cylinder body and upper cylinder body, and the lower cylinder body is fixedly installed in mounting box bottom, installation
The step in cassette bottom portion makes the bottom of lower cylinder body and the bottom of mounting box form a pressure transmission gap；The pressure transmission gap passes through installation
It is connected in the pipeline in the through slot of connector with spraying system, it is thin that the pipeline adjacent to spraying system section is provided with polytetrafluoroethylene (PTFE)
Film；The pressure release oil storage bag that top is provided with pin hole is placed in the lower cylinder body, under pressure release oil storage bag is fixed on by the upper cylinder body
In cylinder body, upper cylinder body simultaneously constitutes a closed oil storage cavity with pressure release oil storage bag；
The conduction pipe net includes being provided with the first oil guide pipe be connected on connector with upper cylinder body, is set to connector welding
What is opened up on end face and the annular diversion trench be connected with the first oil guide pipe and each bit leg is connected to annular diversion trench and will moisten
Consistent lubricant imports the second oil guide pipe at bearing.
2. tricone bit according to claim 1, which is characterized in that the annular diversion trench includes being opened in connector
It the ring-shaped step slot of welding end surface and is placed in ring-shaped step slot proximate end face, for sealing annular step groove to form annular
The ring packing washer of oil guide pipe；Second oil guide pipe passes through the oil-through hole and annular diversion trench opened up on ring packing washer
Inside connection.
3. tricone bit according to claim 2, which is characterized in that second oil guide pipe include oblique oil guide pipe and with
The parallel horizontal oil guide pipe of horizontal plane, the oblique oil guide pipe are connected with horizontal oil guide pipe, and horizontal oil guide pipe extends to the rolling of bearing
Zhu Caochu.
4. tricone bit according to claim 1, which is characterized in that the spraying system includes running through connector and tooth
The sprue of the palm, the sprue are connected with three secondary channels and three side runners in its neighbouring water outlet；Secondary channels and mainstream
The angle formed between road is less than 30 °, and the extensions of every secondary channels are located at the root first lap cutting tooth of the gear wheel adjacent to it
And second circle cutting tooth between；The arc connection that the water outlet of every side runner is formed between two neighboring gear wheel mounting portion
In face.
5. tricone bit according to claim 4, which is characterized in that on the sprue and the water outlet of secondary channels
Spray head is installed, the annular apopore on the spray head is tilted towards the ring edge of spray head.
6. tricone bit according to claim 5, which is characterized in that be also provided on the gear wheel several criss-cross
And flushed channel of the depth between 0.1~0.2cm.
7. -6 any tricone bit according to claim 1, which is characterized in that all cutting tooths of the gear wheel are
The cutting tooth of diamond composite teeth, the gear wheel is pressed into the tooth socket that gear wheel curved surfaces open up, and is matched with the tooth socket interference
It closes；The cutting tooth is located inside tooth socket and is divided into cylindrical body, the conical boss on removal pinnacle is divided into outside tooth socket, and cut
Tooth position is greater than in tooth socket inner part length and is located at card slot outer portion length.
8. a kind of preparation method of tricone bit as claimed in claim 1 to 7, which comprises the steps of:
The bit leg blank and thereon that casting forms the internal connector blank with sprue, has sprue and secondary channels thereon
There is the gear wheel blank of several tooth sockets with inner hole and outer surface；
The oil storage hole of connector short transverse outer surface is processed, and processes in the bottom of oil storage hole and is connected to sprue
Through slot；
The screw thread of connector outer surface is processed, and by screw thread process to below oil storage hole, post-processing connector size
Ring-shaped step slot on biggish end face, and the first oil guide pipe being connected to oil storage hole is processed in ring-shaped step slot；
A horizontal oil guide pipe being parallel to the horizontal plane is processed in each bit leg palm back, and is processed and every from the end face of bit leg
The oblique oil guide pipe of horizontal oil guide pipe connection；
The place of not carburizing is uniformly applied with certain thickness coating before gear wheel heat treatment, and avoids coating in carburizing process
In fall off, gear wheel, connector and bit leg are heat-treated and are finished later；
Pipeline is placed in through slot, mounting box part is placed in oil storage hole later, adjustment mounting box makes Fuel Tanking Unit
Oil outlet is aligned with the first oil guide pipe, later clamping mounting box；
It is placed on ring-shaped step slot after ring packing washer is coated viscose, adjusting annular seal washer makes the second oil guide pipe
It is connected to by oil-through hole and the annular diversion trench inside opened up on ring packing washer, welds connector with bit leg to be formed later
One is whole；
Cutting tooth is pressed into the tooth socket of gear wheel, and is interference fitted cutting tooth and tooth socket；It places and seals at bearing seal position
Gear wheel, is locked on bit leg by steel ball by circle later.
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| CN201910788696.1A CN110469271B (en) | 2019-08-26 | 2019-08-26 | Tricone bit and preparation method thereof |
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| CN201910788696.1A CN110469271B (en) | 2019-08-26 | 2019-08-26 | Tricone bit and preparation method thereof |
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| CN110469271A true CN110469271A (en) | 2019-11-19 |
| CN110469271B CN110469271B (en) | 2020-04-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456634A (en) * | 2020-04-09 | 2020-07-28 | 刘光 | Drill bit for oil drilling |
| CN114320162A (en) * | 2022-01-21 | 2022-04-12 | 徐文飞 | Roller bit with automatic oil injection function for petroleum drilling |
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| CN2690554Y (en) * | 2004-03-20 | 2005-04-06 | 江西宜春飞龙钻头制造有限公司 | Rock bit grease pressure compensator |
| CN101109270A (en) * | 2006-07-17 | 2008-01-23 | 苏州江钻新锐工程工具有限公司 | Three teeth roller bit for mining |
| US20080245577A1 (en) * | 2007-04-05 | 2008-10-09 | Baker Hughes Incorporated | System, method, and apparatus for contoured thrust surfaces between thrust washer and head for roller cone drill bit |
| CN208347692U (en) * | 2017-12-22 | 2019-01-08 | 天津立林钻头有限公司 | Rock bit pressure oil storage compensating device and its rock bit |
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|---|---|---|---|---|
| CN2690554Y (en) * | 2004-03-20 | 2005-04-06 | 江西宜春飞龙钻头制造有限公司 | Rock bit grease pressure compensator |
| CN101109270A (en) * | 2006-07-17 | 2008-01-23 | 苏州江钻新锐工程工具有限公司 | Three teeth roller bit for mining |
| US20080245577A1 (en) * | 2007-04-05 | 2008-10-09 | Baker Hughes Incorporated | System, method, and apparatus for contoured thrust surfaces between thrust washer and head for roller cone drill bit |
| CN208347692U (en) * | 2017-12-22 | 2019-01-08 | 天津立林钻头有限公司 | Rock bit pressure oil storage compensating device and its rock bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456634A (en) * | 2020-04-09 | 2020-07-28 | 刘光 | Drill bit for oil drilling |
| CN114320162A (en) * | 2022-01-21 | 2022-04-12 | 徐文飞 | Roller bit with automatic oil injection function for petroleum drilling |
| CN114320162B (en) * | 2022-01-21 | 2024-07-26 | 昊通(西安)企业管理合伙企业(有限合伙) | Roller bit with automatic oiling function for petroleum drilling |
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| Publication number | Publication date |
|---|---|
| CN110469271B (en) | 2020-04-28 |
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Effective date of registration: 20201116 Address after: 610051 No.3, Chengji Road, Longtan Industrial Park, Chenghua District, Chengdu City, Sichuan Province Patentee after: Sichuan Gemstone Machinery Petroleum Bit Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 610051 No.3, Chengji Road, Longtan Industrial Park, Chenghua District, Chengdu City, Sichuan Province Patentee before: Sichuan Gemstone Machinery Petroleum Bit Co.,Ltd. |
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