CN117145392A - Fast-assembling type roller bit and drilling tool using same - Google Patents
Fast-assembling type roller bit and drilling tool using same Download PDFInfo
- Publication number
- CN117145392A CN117145392A CN202311421763.9A CN202311421763A CN117145392A CN 117145392 A CN117145392 A CN 117145392A CN 202311421763 A CN202311421763 A CN 202311421763A CN 117145392 A CN117145392 A CN 117145392A
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- Prior art keywords
- hole
- column
- oil
- bit
- square cylinder
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- 238000005553 drilling Methods 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000003825 pressing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 3
- 230000036346 tooth eruption Effects 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 102
- 239000010687 lubricating oil Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a quick-assembly roller bit and a drilling tool using the roller bit, and belongs to the technical field of drilling tools. The bit leg comprises a bit leg, wherein the upper end of the bit leg is provided with a bit leg shaft neck; the cone is arranged on the cone leg shaft neck through a bearing; the tooth leg comprises a square cylinder, an oil cup assembly, a hole sealing needle body, a guide seat assembly and a positioning limiting piece, wherein the square cylinder is of a block structure, a tooth leg shaft neck is arranged at the upper end of the square cylinder, square clamping grooves are integrally formed in the lower end of the square cylinder, and the front side and the rear side of the square cylinder are opposite to each other and provided with two groups of first long strip sliding holes; the sliding columns are integrally formed on two sides of the upper part of the square column body; the inner side of the square cylinder is provided with an oil duct; the quick-assembly type roller bit and the drilling tool using the roller bit can supply oil to the bearing of the roller bit, prolong the oil supply period, buffer the deep impact force received by the cutting teeth, protect the cutting teeth and prolong the service life of the cutting teeth.
Description
Technical Field
The invention particularly relates to a quick-assembly roller bit and a drilling tool using the roller bit, and belongs to the technical field of drilling tools.
Background
The roller bit is the most widely used drilling bit, when the roller bit works, the cutting teeth alternately contact the bottom of the well, the rock breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and the stratum is easy to be penetrated; the total length of the working edge is large, so that abrasion is relatively reduced, and the roller bit can adapt to various stratum from soft stratum to hard stratum; in addition, the cutting teeth on the outer side of the roller bit are easy to wear after long-time working, so that the roller bit needs to be replaced periodically, and when the roller bit is replaced, a welded joint needs to be cut through cutting equipment and a new roller bit is welded on a drilling tool; the above-mentioned replacement mode is comparatively complicated, for this reason, chinese patent publication No.: CN109083599a discloses a quick detachable drill bit device, which can improve the installation efficiency of the drill bit, and can pressurize the oil cavity through the elastic energy storage device, so that the lubricating oil is pressed to the bearing, and because the bearing is provided with a rolling gap, the lubricating oil is easily pressed out of the shaft of the bit leg due to the pressure effect, so that the lubricating oil is lost too quickly; the oil cavity is arranged at the inner side of the drilling tool, so that the oil storage capacity is limited, and the bearing is easy to be excessively short of oil; in addition, when the drilling tool receives deep pressure or the cutting teeth enter the rugged rock pits, the cutting teeth receive excessive resistance, the cutting teeth wear too quickly, when the roller bit has excessive resistance, if the quick-mounting seat adopts a thick-wall structure, the thickness of the bit leg needs to be reduced, so that the bit leg is deformed, and if the quick-mounting seat adopts a thin-wall structure, the thickness of the bit leg needs to be reduced, so that the bit leg and the mounting position of the quick-mounting seat are deformed.
Disclosure of Invention
The invention provides the quick-assembly type roller bit and the drilling tool using the roller bit, which can supply oil to a bearing of the roller bit, prolong the oil supply period, buffer the deep impact force received by a cutting tooth, protect the cutting tooth and prolong the service life of the cutting tooth.
The quick-assembling roller bit comprises a bit leg, wherein the upper end of the bit leg is provided with a bit leg shaft neck; the cone is arranged on the cone leg shaft neck through a bearing; the roller cone can rotate along the shaft neck of the bit leg through the bearing, and when the drilling tool rotates, the roller cone can revolve along the drilling tool; the bit leg comprises:
the square cylinder is of a block structure, the bit leg shaft neck is arranged at the upper end of the square cylinder, square clamping grooves are integrally formed in the lower end of the square cylinder, and the front side and the rear side of the square cylinder are opposite to each other and provided with two groups of first strip sliding holes; the sliding columns are integrally formed on two sides of the upper part of the square column body; the inner side of the square cylinder is provided with an oil duct; the bottom end of the oil passage is integrally provided with a large hole body, the upper end of the oil passage is connected to the inner side of a bit leg journal, and the bit leg journal is provided with a first oil passing hole for communicating a bearing and the oil passage; two groups of second long strip sliding holes are formed between the square column body and the sliding column;
the upper part of the inner side of the square cylinder is provided with a cup groove, an oil cup is embedded in the cup groove, and the oil cup is welded and fixed with the cup groove; the oil cup does not protrude out of the square cylinder; an oiling bolt is screwed on the oil cup; the inner side of the oil cup is provided with a second oil passing hole communicated with the oil duct; the oil cup can be filled with oil periodically through the oil filling bolt, and the oil cup is thoroughly sealed through the oil filling bolt after oil filling is completed;
the hole sealing needle body comprises a pressing column, a sealing ring is integrally formed outside the pressing column, a needle section is integrally formed at the top of the pressing column, and the inside of the needle section is hollow; the top of the outer side of the needle section is fixedly covered with a rubber sleeve body; the needle section is provided with a third oil passing hole at the lower part of the rubber sleeve body; the pressing column is embedded into the inner side of the large hole body, the sealing ring is pressed with the inner wall of the large hole body, the needle section is embedded into the inner side of the oil duct, the rubber sleeve body is pressed with the inner wall of the oil duct, and the second oil passing hole is communicated with the third oil passing hole;
the guide seat assembly comprises an upper guide seat and a lower guide seat which are fixed on a drilling tool, the hole sealing needle body is fixed on the lower guide seat, the sliding column is slidably arranged on the upper guide seat, and the clamping groove is slidably clamped with the lower guide seat;
the positioning limiting piece comprises a bolt body screwed on the four ends of the bottom surface of the square cylinder, spring hole seats are formed in two sides of the middle of the bottom surface of the square cylinder, and strong springs are embedded in the inner sides of the spring hole seats.
During installation, the quick-assembly roller bit is in a flip-chip mode, when the quick-assembly roller bit is used, the bolt body is screwed with the square column body, the distance between the bottom of the bolt body and the bottom of the square column body can be finely adjusted, when the square column body is stressed, the powerful spring is compressed, so that the impact force can be relieved, after the square column body is stressed, the powerful spring is continuously compressed, so that the bolt body and the lower guide seat are limited, when the square column body linearly slides, the sliding column of the square column body linearly slides with the upper guide seat, the lower part of the square column body directly linearly slides along the inner side of the lower guide seat, the clamping groove of the square column body linearly slides with the beam plate of the lower guide seat, and when the bit leg is subjected to circumferential rotary digging force of a drilling tool, the square column body is limited through the upper guide seat, the lower guide seat and the beam plate;
when the roller does not contact the rock stratum or rotates to separate from the rock stratum, the square cylinder is pushed down by the powerful spring, so that the large hole body and the oil duct of the square cylinder move downwards, the positions of the pressing cylinder and the needle section are kept unchanged, at the moment, the rubber sleeve body elastically seals the second oil passing hole, and at the moment, the sealing of the oil cup can be completed;
when the roller bit contacts rock stratum during roller operation, the powerful spring is compressed, so that the large hole body and the oil duct of the square cylinder ascend, the positions of the pressing column and the needle section are kept unchanged, at the moment, the rubber sleeve body is separated from the second oil passing hole, and at the moment, the second oil passing hole and the third oil passing hole are mutually communicated; the lubricating oil on the inner side of the oil cup is sent into the third oil passing hole through the second oil passing hole; because the interior of the needle section is hollow, and the roller cone is in the rotation vibration process, lubricating oil enters the oil duct; the bearing is connected with the bearing shaft through a bearing shaft neck and a bearing; when the roller cone continuously works, lubricating oil can continuously supply oil to the bearing, and after the work is completed, the second oil passing hole can be closed through the rubber sleeve body.
Further, the end part of the shaft neck of the bit leg is integrally provided with a embedded column; the embedded column is embedded and welded with the bit leg, and a core hole communicated with the oil duct is formed in the center of the embedded column; the core hole is communicated with the first oil passing hole, the shaft neck of the bit leg and the bit leg are independently machined and assembled in an integral welding mode, and during installation, the embedded column is directly embedded into the bit leg and assembled in an integral welding mode, and lubricating oil in the oil duct enters the first oil passing hole through the core hole to supply oil and lubricate the bearing.
Further, the lower guide seat comprises a beam plate and a concave seat which are welded with the drilling tool; the top surface of the concave seat is of a slope structure, and first limiting holes are formed in two sides of the concave seat; the inner side of the concave seat is provided with a guide hole; the bottom of the concave seat is provided with a bayonet; the bayonet is clamped with the beam plate; the hole sealing needle body is welded on the top surface of the beam plate; the clamping groove is in sliding clamping with the beam plate; the bolt body and the powerful spring are movably embedded into the limiting hole; the upper guide seat is provided with a second limiting hole; a first bolt limiting column is arranged between the first strip sliding hole and the first limiting hole; and a second bolt limiting column is arranged between the second long strip sliding hole and the second limiting hole. The beam plate is welded at the notch of the drilling tool, then the concave seat is embedded into the notch, the concave seat is embedded with the beam plate, then the outer edge of the concave seat is welded with the notch, after the bayonet of the concave seat is embedded with the beam plate, a groove body is formed between the two ends of the beam plate and the bayonet, then the groove body is filled with welding materials, the concave seat and the beam plate are welded into a whole, the welding materials do not protrude out of the concave seat, and the square column body is prevented from sliding at the inner side of the lower guide seat; because beam slab and concave seat are welded with drilling tool notch earlier, then with beam slab and concave seat integrative welding to make down the guide holder form three-dimensional welded structure, can bear the shearing force that the rotation of roller bit or drilling tool revolution were transmitted, when drilling tool depth transmitted impact force, roller bit transmitted square cylinder with impact force, square cylinder atress back, first rectangular slide hole was followed first spacing post straight line and is slided, and second rectangular slide hole is followed spacing post straight line of second bolt and is slided, thereby transmit the pressure to powerful spring, carry out impact force pressure release after the powerful spring is compressed.
Further, the first strip sliding hole and the second strip sliding hole are embedded with oval sliding keys, the first bolt limiting column and the second bolt limiting column are movably embedded with the sliding keys, and the sliding keys can linearly slide in the first strip sliding hole and the second strip sliding hole and limit sliding travel.
Further, a rubber body pressed with the top surface of the lower guide seat is fixed on the bottom surface of the sliding column, and elastic buffering is carried out between the sliding column and the lower guide seat through the rubber body.
Further, the top of the square column body is integrally provided with an outer edge seat body; the outer edge seat body is provided with a perforation, the perforation is movably embedded with a pin column, the bottom of the pin column is fixed with the drilling tool, the pin column can limit the square column body through the cooperation of the pin column and the outer edge seat body, and meanwhile, the square column body can conduct linear reciprocating motion to guide.
Further, the bottom of the pressing column is sleeved with a lower sealing gasket which is pressed with the clamping groove; the needle section bottom has cup jointed the upper seal pad with the macropore body pressfitting, can carry out two-channel sealing to oil duct bottom and macropore internal side through upper seal pad and lower seal pad, and when drilling tool digs soon, can keep the oil duct pressure through the sealing ring and the rubber sleeve body of hole sealing needle body.
A drilling tool comprises a quick-assembly roller bit and also comprises a drilling barrel, wherein a plurality of notches are formed in the drilling barrel at intervals; the upper guide seat and the lower guide seat are welded on the inner side of the notch, the bottom surface of the lower guide seat is attached to the top surface of the inner side of the notch, and the directions of the adjacent quick-assembly roller bits are opposite; the notch is of a T-shaped groove structure, and the pin is welded to the upper part of the inner side of the notch; the outer edge seat body is pressed on the upper part of the inner side of the notch and is movably embedded with the pin, the bottom of the square cylinder is limited by the beam plate, the upper side part of the square cylinder is limited by the sliding clamping of the upper guide seat, and the lower side part of the square cylinder is limited by the embedding of the lower guide seat; the top of the square cylinder is limited by the pin, so that the circumference of the square cylinder can be limited, the square cylinder can be always limited when the drilling tool is rotationally dug, and meanwhile, the square cylinder can slide linearly along the notch.
Further, sealing plates are fixed on the front side and the rear side of the notch through bolts; and counter bores are formed in the sealing plates, the bolts are arranged on the inner sides of the counter bores, the outside of the notch is sealed through the sealing plates, and drill cuttings are prevented from entering the notch to influence the sliding stroke of the roller bit.
Compared with the prior art, the quick-assembling type roller bit and the drilling tool using the roller bit have the advantages that oil supply lubrication can be timely carried out on the bit leg shaft neck and the bearing mounting position when the roller bit works, the oil cup can be sealed when the roller bit is not operated, the oil supply period is prolonged, intermittent linear reciprocating motion is adopted when the roller bit and the drilling tool are mounted, the deep impact force received by the cutting teeth can be buffered, the cutting teeth are protected, the service life of the cutting teeth is prolonged, meanwhile, the rotary digging resistance is reduced, large impact on the roller bit and the drilling tool mounting position is avoided, in addition, the clamping limit is carried out on the bottom part and the side part of the bit leg, the stress deformation of the roller bit can be avoided, the bit replacement efficiency can be improved, and meanwhile, the mounting deformation of the roller bit due to the installation of a guide seat component is avoided.
Drawings
FIG. 1 is a schematic diagram of the internal structure of the front end of a roller cone drill bit according to the present invention.
Figure 2 is a schematic diagram of the leg journal and leg mounting structure of the present invention.
Fig. 3 is a schematic diagram of the overall structure of the square column of the present invention.
Fig. 4 is a schematic view of the internal structure of the square column according to the present invention.
FIG. 5 is a schematic view of the rubber body mounting structure of the present invention.
Fig. 6 is a schematic structural diagram of a guide assembly according to the present invention.
Fig. 7 is a schematic view of the installation structure of the sliding key and the first bolt limiting post of the invention.
Fig. 8 is a schematic view of the installation structure of the sliding key and the second bolt limiting post of the invention.
Fig. 9 is a schematic view of the drilling tool according to the present invention.
Fig. 10 is a schematic view of the notch and bit mounting structure of the drilling tool of the present invention.
Fig. 11 is a schematic view of the mounting structure of the drilling tool and the sealing plate of the present invention.
Reference numerals: 1. leg, 2, leg journal, 3, cone, 4, square cylinder, 5, neck, 6, first elongated slide hole, 7, slide post, 8, oil passage, 9, large hole body, 10, first oil passing hole, 11, second elongated slide hole, 12, cup slot, 13, oil cup, 14, oiling bolt, 15, second oil passing hole, 16, compression post, 17, seal ring, 18, needle segment, 19, rubber sleeve, 20, third oil passing hole, 21, upper guide seat, 22, bolt body, 23, spring hole seat, 24, strong spring, 25, insert post, 26, core hole, 27, beam plate, 28, concave seat, 29, first limit hole, 30, bayonet, 31, guide hole, 32, second limit hole, 33, first bolt limit post, 34, second bolt limit post, 35, key, 36, rubber body, 37, outer edge seat body, 38, perforation, 39, pin post, 40, lower seal pad, 41, upper seal pad, 42, seal plate, 43, drill cylinder.
Detailed Description
Example 1:
the quick-assembling roller bit shown in fig. 1-8 comprises a bit leg 1, wherein the upper end of the bit leg 1 is provided with a bit leg shaft neck 2; the cone 3 is arranged on the bit leg shaft neck 2 through a bearing; the roller cone 3 can rotate along the bit leg shaft neck 2 through a bearing, and when the drilling tool rotates, the roller cone 3 can revolve along the drilling tool; the bit leg 1 comprises:
the square cylinder 4 is in a block structure, the bit leg shaft neck 2 is arranged at the upper end of the square cylinder 4, a square clamping groove 5 is integrally formed at the lower end of the square cylinder 4, and two groups of first strip sliding holes 6 are formed on the front side and the rear side of the square cylinder 4 in a positive manner; the sliding columns 7 are integrally formed on two sides of the upper part of the square column body 4; an oil duct 8 is formed in the inner side of the square cylinder 4; the bottom end of the oil duct 8 is integrally provided with a large hole body 9, the upper end of the oil duct 8 is connected to the inner side of the bit leg journal 2, and the bit leg journal 2 is provided with a first oil passing hole 10 for communicating a bearing with the oil duct 8; two groups of second strip sliding holes 11 are formed between the square column body 4 and the sliding column 7;
the upper part of the inner side of the square cylinder 4 is provided with a cup groove 12, an oil cup 13 is embedded in the cup groove 12, and the oil cup 13 is welded and fixed with the cup groove 12; the oil cup 13 does not protrude out of the square column 4; an oiling bolt 14 is screwed on the oil cup 13; the inner side of the oil cup 13 is provided with a second oil passing hole 15 communicated with the oil duct 8; the oil cup 13 can be filled with oil periodically through the oil filling bolt 14, and after the oil filling is finished, the oil can be thoroughly sealed through the oil filling bolt 14;
the hole sealing needle body comprises a pressing column 16, a sealing ring 17 is integrally formed outside the pressing column 16, a needle section 18 is integrally formed at the top of the pressing column 16, and the inside of the needle section 18 is hollow; the top of the outer side of the needle section 18 is fixedly covered with a rubber sleeve body 19; the needle section 18 is provided with a third oil passing hole 20 at the lower part of the rubber sleeve body 19; the pressing column 16 is embedded into the inner side of the macroporous body 9, the sealing ring 17 is pressed with the inner wall of the macroporous body 9, the needle section 18 is embedded into the inner side of the oil duct 8, the rubber sleeve 19 is pressed with the inner wall of the oil duct 8, and the second oil passing hole 15 is communicated with the third oil passing hole 20;
the guide seat assembly comprises an upper guide seat 21 and a lower guide seat which are fixed on a drilling tool, the hole sealing needle body is fixed on the lower guide seat, the sliding column 7 is slidably arranged on the upper guide seat 21, and the clamping groove 5 is slidably clamped with the lower guide seat;
the positioning limiting piece comprises a bolt body 22 screwed on the four ends of the bottom surface of the square cylinder 4, spring hole seats 23 are formed in two sides of the middle of the bottom surface of the square cylinder 4, and strong springs 24 are embedded in the inner sides of the spring hole seats 23.
When the quick-mounting roller 3 bit is installed, the quick-mounting roller 3 bit is in a flip-chip mode, when the quick-mounting roller 3 bit is used, the bottom of the bolt body 22 and the bottom of the square cylinder 4 are in screwed connection through the bolt body 22, when the square cylinder 4 is stressed to compress the powerful spring 24, the impact force can be relieved, after the square cylinder 4 is stressed, the powerful spring 24 is continuously compressed, so that the bolt body 22 and the lower guide seat are limited, when the square cylinder 4 slides linearly, the sliding column 7 of the square cylinder 4 slides linearly with the upper guide seat 21, the lower part of the square cylinder 4 slides linearly along the inner side of the lower guide seat directly, the clamping groove 5 of the square cylinder 4 slides linearly with the beam plate of the lower guide seat, and when the bit leg 1 is stressed by the circumferential rotary digging force of a drilling tool, the square cylinder 4 is limited through the upper guide seat 21, the lower guide seat and the beam plate;
when the roller 3 does not contact the rock stratum or rotates to separate from the rock stratum, the square cylinder 4 is pushed down by the powerful spring 24, so that the large hole 9 and the oil duct 8 of the square cylinder 4 are pushed down, the positions of the pressing column 16 and the needle section 18 are kept unchanged, at the moment, the rubber sleeve 19 elastically seals the second oil passing hole 15, and at the moment, the sealing of the oil cup 13 can be completed;
when the roller cone 3 works and the roller bit contacts rock stratum, the powerful spring 24 is compressed, so that the large hole 9 and the oil duct 8 of the square column body 4 ascend, the positions of the pressing column 16 and the needle section 18 are kept unchanged, at the moment, the rubber sleeve 19 is separated from the second oil passing hole 15, and at the moment, the second oil passing hole 15 and the third oil passing hole 20 are mutually communicated; the lubricating oil inside the oil cup 13 is sent into the third oil passing hole 20 through the second oil passing hole 15; because the interior of the needle section 18 is hollow, and the roller 3 enters the oil duct 8 in the process of rotating and vibrating; and enters the first oil passing hole 10 through the oil passage 8 so as to enter the bit leg journal 2 and the bearing; when the roller cone 3 continuously works, the lubricating oil can continuously supply oil to the bearings, and after the work is completed, the second oil passing hole 15 can be closed through the rubber sleeve 19.
As shown in fig. 2, the end of the bit leg shaft neck 2 is integrally provided with a embedded post 25; the embedded column 25 is embedded and welded with the bit leg 1, and a core hole 26 communicated with the oil duct 8 is formed in the center of the embedded column 25; the core hole 26 is communicated with the first oil passing hole 10, the bit leg journal 2 and the bit leg are assembled in an independent processing and integral welding mode, and during installation, the embedded post 25 is directly embedded into the bit leg 1 and is integrally welded and assembled, and lubricating oil in the oil duct 8 enters the first oil passing hole 10 through the core hole 26 to supply oil and lubricate the bearing.
The lower guide seat comprises a beam plate 27 and a concave seat 28 which are welded with the drilling tool; the top surface of the concave seat 28 is of a slope structure, and first limiting holes 29 are formed in two sides of the concave seat 28; the inner side of the concave seat 28 is provided with a guide hole 31; the bottom of the concave seat 28 is provided with a bayonet 30; the bayonet 30 is clamped with the beam plate 27; the hole sealing needle body is welded on the top surface of the beam plate 27; the clamping groove 5 is in sliding clamping with the beam plate 27; the bolt body 22 and the powerful spring 24 are movably embedded into the inner side of the guide hole 31; the upper guide seat 21 is provided with a second limiting hole 32; a first bolt limiting column 33 is arranged between the first strip sliding hole 6 and the first limiting hole 29; a second bolt limiting column 34 is arranged between the second long strip sliding hole 11 and the second limiting hole 32. The beam plate 27 is welded at the notch of the drilling tool, the concave seat 28 is embedded into the notch, the concave seat 28 is embedded with the beam plate 27, the outer edge of the concave seat 28 is welded with the notch, after the bayonet 30 of the concave seat 28 is embedded with the beam plate 27, a groove body is formed between the two ends of the beam plate 27 and the bayonet 30, then the groove body is filled with welding materials, the concave seat 28 and the beam plate 27 are welded into a whole, the welding materials do not protrude out of the concave seat 28, and the square column 4 is prevented from sliding inside the lower guide seat; because beam plate 27 and concave seat 28 are welded with the drilling tool notch first, then beam plate 27 and concave seat 28 are welded integrally, thereby making the lower guide seat form a three-dimensional welding structure, and being capable of bearing the shearing force transmitted by rotation of the roller bit or revolution of the drilling tool, when the drilling tool deeply transmits the impact force, the roller bit transmits the impact force to square cylinder 4, after square cylinder 4 is stressed, first long-strip slide hole 6 slides along first bolt limit column 33 linearly, second long-strip slide hole 11 slides along second bolt limit column 34 linearly, thereby transmitting pressure to strong spring 24, and strong spring 24 is compressed and then performs impact force pressure relief.
The first long strip slide hole 6 and the second long strip slide hole 11 are embedded with oval slide keys 35, the first bolt limiting column 33 and the second bolt limiting column 34 are movably embedded with the slide keys 35, and the slide keys 35 can linearly slide in the first long strip slide hole 6 and the second long strip slide hole 11 and limit the sliding stroke.
As shown in fig. 5, a rubber body 36 pressed with the top surface of the lower guide seat is fixed on the bottom surface of the sliding column 7, and elastic buffering is performed between the sliding column 7 and the lower guide seat through the rubber body 36.
The top of the square column body 4 is integrally provided with an outer edge seat body 37; the outer edge seat 37 is provided with a perforation 38, the perforation 38 is movably embedded with a pin 39, the bottom of the pin 39 is fixed with a drilling tool, the pin 39 can limit the square column 4 through the cooperation of the pin 39 and the outer edge seat 37, and meanwhile, the square column 4 can conduct linear reciprocating motion to guide.
The bottom of the pressing column 16 is sleeved with a lower sealing gasket 40 pressed with the clamping groove 5; the bottom of the needle section 18 is sleeved with an upper sealing gasket 41 pressed with the macroporous body 9, the bottom of the oil duct 8 and the inner side of the macroporous body 9 can be sealed by the upper sealing gasket 41 and the lower sealing gasket 40, and when a drilling tool is rotationally dug, the pressure of the oil duct 8 can be kept by the sealing ring 17 of the hole sealing needle body and the rubber sleeve body 19.
As shown in fig. 9, a drilling tool comprises a quick-assembling roller bit and further comprises a drill cylinder 42, wherein a plurality of notches are formed in the drill cylinder 42 at intervals; the upper guide seat 21 and the lower guide seat are welded on the inner side of the notch, the bottom surface of the lower guide seat is attached to the top surface of the inner side of the notch, and the directions of the adjacent quick-assembly roller bit are opposite.
As shown in fig. 10, the slot is of a T-shaped slot structure, and the pin 39 is welded to the upper part of the inner side of the slot; the outer edge seat 37 is pressed on the upper part of the inner side of the notch and movably jogged with the pin 39, the bottom of the square column 4 is limited by the beam plate 27, the upper side part of the square column 4 is limited by the sliding clamping of the upper guide seat 21, and the lower side part of the square column 4 is limited by the jogging of the lower guide seat; the top of the square cylinder 4 is limited by the pin 39, so that the square cylinder 4 can be limited in the circumferential direction, the square cylinder 4 can be limited all the time when the drilling tool is rotationally dug, and meanwhile, the square cylinder 4 can slide linearly along the notch.
As shown in fig. 11, the front side and the rear side of the notch are fixed with sealing plates 43 by bolts; counter bores are formed in the sealing plates 43, the bolts are arranged on the inner sides of the counter bores, the outside of the notch is sealed through the sealing plates 43, and drill cuttings are prevented from entering the notch to influence the sliding stroke of the roller bit.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (9)
1. A quick-assembling roller bit comprises a bit leg, wherein the upper end of the bit leg is provided with a bit leg shaft neck; the cone is arranged on the cone leg shaft neck through a bearing; the method is characterized in that: the bit leg comprises:
the square cylinder is of a block structure, the bit leg shaft neck is arranged at the upper end of the square cylinder, square clamping grooves are integrally formed in the lower end of the square cylinder, and the front side and the rear side of the square cylinder are opposite to each other and provided with two groups of first strip sliding holes; the sliding columns are integrally formed on two sides of the upper part of the square column body; the inner side of the square cylinder is provided with an oil duct; the bottom end of the oil passage is integrally provided with a large hole body, the upper end of the oil passage is connected to the inner side of a bit leg journal, and the bit leg journal is provided with a first oil passing hole for communicating a bearing and the oil passage; two groups of second long strip sliding holes are formed between the square column body and the sliding column;
the upper part of the inner side of the square cylinder is provided with a cup groove, an oil cup is embedded in the cup groove, and the oil cup is welded and fixed with the cup groove; the oil cup does not protrude out of the square cylinder; an oiling bolt is screwed on the oil cup; the inner side of the oil cup is provided with a second oil passing hole communicated with the oil duct;
the hole sealing needle body comprises a pressing column, a sealing ring is integrally formed outside the pressing column, a needle section is integrally formed at the top of the pressing column, and the inside of the needle section is hollow; the top of the outer side of the needle section is fixedly covered with a rubber sleeve body; the needle section is provided with a third oil passing hole at the lower part of the rubber sleeve body; the pressing column is embedded into the inner side of the large hole body, the sealing ring is pressed with the inner wall of the large hole body, the needle section is embedded into the inner side of the oil duct, the rubber sleeve body is pressed with the inner wall of the oil duct, and the second oil passing hole is communicated with the third oil passing hole;
the guide seat assembly comprises an upper guide seat and a lower guide seat which are fixed on a drilling tool, the hole sealing needle body is fixed on the lower guide seat, the sliding column is slidably arranged on the upper guide seat, and the clamping groove is slidably clamped with the lower guide seat;
the positioning limiting piece comprises a bolt body screwed on the four ends of the bottom surface of the square cylinder, spring hole seats are formed in two sides of the middle of the bottom surface of the square cylinder, and strong springs are embedded in the inner sides of the spring hole seats.
2. The quick-fit roller cone drill bit of claim 1 wherein: the end part of the shaft neck of the bit leg is integrally provided with a embedded column; the embedded column is embedded and welded with the bit leg, and a core hole communicated with the oil duct is formed in the center of the embedded column; the core hole is communicated with the first oil passing hole.
3. The quick-fit roller cone drill bit of claim 1 wherein: the lower guide seat comprises a beam plate and a concave seat which are welded with the drilling tool; the top surface of the concave seat is of a slope structure, and first limiting holes are formed in two sides of the concave seat; the inner side of the concave seat is provided with a guide hole; the bottom of the concave seat is provided with a bayonet; the bayonet is clamped with the beam plate; the hole sealing needle body is welded on the top surface of the beam plate; the clamping groove is in sliding clamping with the beam plate; the bolt body and the powerful spring are movably embedded into the limiting hole; the upper guide seat is provided with a second limiting hole; a first bolt limiting column is arranged between the first strip sliding hole and the first limiting hole; and a second bolt limiting column is arranged between the second long strip sliding hole and the second limiting hole.
4. The quick-fit roller cone drill bit of claim 3 wherein: oval sliding keys are embedded in the first long-strip sliding holes and the second long-strip sliding holes, and the first bolt limiting column and the second bolt limiting column are movably embedded with the sliding keys.
5. The quick-fit roller cone drill bit of claim 1 wherein: the bottom surface of the sliding column is fixed with a rubber body pressed with the top surface of the lower guide seat.
6. The quick-fit roller cone drill bit of claim 1 wherein: the top of the square column body is integrally provided with an outer edge seat body; the outer edge seat body is provided with a perforation, a pin column is movably embedded in the perforation, and the bottom of the pin column is fixed with the drilling tool.
7. The quick-fit roller cone drill bit of claim 1 wherein: the bottom of the pressing column is sleeved with a lower sealing gasket which is pressed with the clamping groove; the bottom of the needle section is sleeved with an upper sealing gasket which is pressed with the macroporous body.
8. A drilling tool comprising the quick-fit roller cone drill bit of any one of claims 1 to 7, characterized in that: the drilling machine further comprises a drilling barrel, wherein a plurality of notches are formed in the drilling barrel at intervals; the upper guide seat and the lower guide seat are welded on the inner side of the notch, and the bottom surface of the lower guide seat is attached to the top surface of the inner side of the notch; the notch is of a T-shaped groove structure, and the pin is welded to the upper part of the inner side of the notch; the outer edge seat body is pressed on the upper part of the inner side of the notch and is movably embedded with the pin.
9. The drilling tool of claim 8, wherein: sealing plates are fixed on the front side and the rear side of the notch through bolts; and a counter bore is formed in the sealing plate, and the bolt is arranged on the inner side of the counter bore.
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| CN202311421763.9A CN117145392B (en) | 2023-10-31 | 2023-10-31 | Fast-assembling type roller bit and drilling tool using same |
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