CN114607283A - PDC drill bit for directional drilling - Google Patents
PDC drill bit for directional drilling Download PDFInfo
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- CN114607283A CN114607283A CN202210248515.8A CN202210248515A CN114607283A CN 114607283 A CN114607283 A CN 114607283A CN 202210248515 A CN202210248515 A CN 202210248515A CN 114607283 A CN114607283 A CN 114607283A
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- 238000005553 drilling Methods 0.000 title claims abstract description 53
- 238000010304 firing Methods 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 25
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 14
- 239000011707 mineral Substances 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
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- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- 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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a PDC drill bit for directional drilling, which belongs to the technical field of geological drilling and comprises a drill bit main body, wherein a load assembly is fixedly connected to the inner side wall of the drill bit main body, and a directional assembly is fixedly connected to the inner side wall of the load assembly. According to the invention, through the mutual cooperation of the designed structures such as the load assembly, the directional assembly, the driving assembly, the supporting assembly and the resistance reducing assembly, the stability of the working environment of the conical head can be improved, so that the conical head can keep a stable directional drilling action in the feeding process, the carrier can also drive the dividing net to rotate, and the crushing of mineral blocks can be realized by utilizing the pushing pressure generated by the helical blades in the transmission process, so that the mineral blocks can be effectively prevented from blocking a drilling well, the smooth drilling work can be ensured, the lateral resistance of the drill bit main body in the drilling process can be reduced, and the stability of the drill bit main body in the working process can be effectively ensured.
Description
Technical Field
The invention belongs to the technical field of geological drilling, and particularly relates to a PDC drill bit for directional drilling.
Background
The polycrystalline diamond compact bit is a compact, the shape of which is round and is inlaid on a cylindrical cutting tool, the cutting tool is inlaid on a bit body to form the PDC bit, and the PDC bit is mainly applied to the working fields of coal bed drilling and excavation, oil and gas fields and the like on a coal mine.
The bit base member surface is equipped with a plurality of blades, is equipped with a plurality of diamond cutting teeth on the blade, becomes the PDC drill bit, and the in-process that uses the PDC drill bit to creep into work is influenced by the cutting face, blade face and cutting blade face promptly, causes PDC face controllability poor, creeps into the in-process and takes place the dislocation easily, and when the side position meets great resistance, takes place the side easily and moves, consequently, the PDC drill bit that needs a directional drilling in urgent need at present stage solves above-mentioned problem.
Disclosure of Invention
The invention aims to: the PDC drill bit for directional drilling is provided in order to solve the problems that a plurality of blades are arranged on the surface of a drill bit base body, a plurality of diamond cutting teeth are arranged on the blades to form the PDC drill bit, and the PDC drill bit is influenced by cutting faces, namely the blade faces and the cutting blade faces, in the drilling process, so that the control capability of the PDC faces is poor, dislocation is easy to occur in the drilling process, and lateral displacement is easy to occur when a side position meets large resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PDC drill bit for directional drilling comprises a drill bit main body, a load assembly is fixedly connected on the inner side wall of the drill bit main body, the inner side wall of the load assembly is fixedly connected with an orientation assembly, the inner side of the drill bit main body is also provided with a driving assembly, the driving assembly is positioned below the load assembly, a through connecting hole is arranged on the surface of the drill bit main body corresponding to the position of the driving component, a supporting component is clamped in the through connecting hole, the supporting component is internally sleeved with a resistance reducing component, the driving component is fixedly connected to the surface of the auxiliary shaft, the bottom end of the auxiliary shaft is fixedly connected with a main shaft, the surface of the main shaft is sleeved with a first bearing, the first bearing is clamped in a clamping port formed at the bottom of the power conversion assembly, and the power conversion assembly is positioned on the inner side of the driving sleeve, and the top of the driving sleeve is fixedly connected with the bottom of the drill bit main body.
As a further description of the above technical solution:
the load assembly comprises a carrier, the outer contour surface of the carrier is fixedly connected with the inner side wall of the drill bit main body, the carrier is fixedly connected with the drill bit main body through a partition net, and the top of the carrier is clamped with a reinforcing sleeve.
As a further description of the above technical solution:
the directional assembly comprises a reinforcing seat, the outer contour surface of the reinforcing seat is fixedly connected with the inner surface of a reinforcing sleeve, a drill shaft is fixedly connected to the top of the reinforcing seat, a conical head is fixedly connected to the top end of the drill shaft, and a helical blade is further wound and connected to the surface of the drill shaft.
As a further description of the above technical solution:
the supporting component comprises a connecting sleeve, the connecting sleeve is connected in a penetrating connecting hole in a clamped mode, a first sliding connecting groove is formed in the inner side wall of the connecting sleeve, a first sliding connecting seat is connected in the first sliding connecting groove in a sliding mode, and the side end face of the first sliding connecting seat is fixedly connected with the inner side end face of the first sliding connecting groove through a first supporting spring.
As a further description of the above technical solution:
the driving assembly comprises an outer ring, an inner ring is arranged on the inner side of the outer ring, the inner ring is fixedly connected to the surface of the auxiliary shaft, the outer contour surface of the inner ring is fixedly connected with the inner surface of the outer ring through a bridge-type connecting frame, and protruding grains are fixedly connected to the position, corresponding to the resistance reducing assembly, of the outer contour surface of the outer ring.
As a further description of the above technical solution:
the first sliding connecting seat is of a T-shaped structure in the cross section shape of side view, and the first sliding connecting groove is of a T-shaped structure in the cross section shape of side view.
As a further description of the above technical solution:
the power conversion assembly comprises a driving gear, the driving gear is fixedly connected to the surface of the main shaft, a driven gear is meshed to the surface of the main shaft, a toothed ring is further meshed to the surface of the driven gear, and the outer contour surface of the toothed ring is fixedly connected with the inner surface of the driving sleeve.
As a further description of the above technical solution:
driven gear's top joint has the second bearing, the change-over axle has been cup jointed in the second bearing, the tip fixedly connected with fixing base of change-over axle, the outer profile face of fixing base and the inside wall fixed connection of drive sleeve to the bottom of fixing base is seted up to the joint mouth.
As a further description of the above technical solution:
the utility model discloses a drill bit, including falling and hindering subassembly two, fall and hinder the subassembly and fall subassembly one, fall and hinder the subassembly one and include firing rod one, the opposite face fixed connection of firing rod one and first sliding connection seat, one end fixedly connected with driving piece one that is close to protruding grain of firing rod, the other end fixedly connected with conical taper body of firing rod one, the joint has the steel hoop in the drill bit main part, the vibrations head has been cup jointed in the steel hoop to the position department that corresponds the vibrations head on the steel hoop inside wall has seted up the second and has slided the spread groove, sliding connection has the second sliding connection seat in the second slides the spread groove, the terminal surface department that the second slided the connection seat slides the inboard terminal surface fixed connection of spread groove through second supporting spring and second, the opposite face fixed connection of second sliding connection seat and vibrations head.
As a further description of the above technical solution:
the resistance reducing assembly II comprises a second firing rod, one end, close to the protruding grains, of the second firing rod is fixedly connected with a second driving piece, and the other end of the second firing rod is fixedly connected with a prick.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the stability of the working environment of the conical head can be improved under the mutual cooperation of the designed structures such as the load assembly, the directional assembly, the driving assembly, the supporting assembly and the resistance reducing assembly, so that the conical head can keep a stable directional drilling action in the feeding process, the carrier can drive the dividing net to rotate, and the crushing of mineral blocks can be realized by utilizing the pushing pressure generated by the helical blades in the transmission process, so that the mineral blocks can be effectively prevented from blocking a drilling well, the smooth drilling work can be ensured, the lateral resistance of the drill bit main body in the drilling process can be reduced, and the stability of the drill bit main body in the working process can be effectively ensured.
2. According to the invention, through the designed load assembly and the directional assembly, stress points of the conical head are concentrated, so that the breakthrough performance is excellent, and the dispersion effect of the helical blades is assisted, so that the stability of the working environment of the conical head is improved, therefore, the conical head can keep a stable directional drilling action in the feeding process, and on the other hand, the crushing of mineral blocks can be realized, so that the mineral blocks can be effectively prevented from blocking a drilling well, and the smooth operation of the drilling well is ensured.
3. According to the invention, through the designed driving assembly, the supporting assembly and the resistance reducing assembly I, the large mineral blocks can be quickly crushed, the lateral resistance of the drill bit main body in the drilling process is reduced, and the stability of the drill bit main body in the working process is effectively ensured.
4. According to the invention, through the designed power conversion assembly, the driving sleeve drives the drill bit main body to perform drilling work, and on the basis, the relative motion relation between the driving sleeve and the driving assembly can be realized.
5. According to the invention, through the designed driving assembly, the supporting assembly and the resistance reducing assembly II, the small mineral blocks can be further crushed rapidly, the lateral resistance of the drill bit main body in the drilling process is reduced, and the stability of the drill bit main body in the working process is effectively ensured.
Drawings
FIG. 1 is an exploded view of a directional drilling PDC bit according to the present invention
FIG. 2 is a schematic perspective view of a drive sleeve of a PDC bit for directional drilling according to the present invention;
FIG. 3 is a schematic perspective view of a second resistance reduction assembly in a PDC bit for directional drilling according to the present invention;
FIG. 4 is an exploded view of a support assembly in a directional drilling PDC bit in accordance with the present invention;
FIG. 5 is a schematic perspective view of a fixing seat of a PDC drill bit for directional drilling according to the present invention;
FIG. 6 is a schematic diagram of a combined structure of a first resistance-reducing component and a supporting component in a PDC bit for directional drilling according to the present invention;
FIG. 7 is a schematic perspective view of a PDC drill bit for directional drilling according to the present invention;
FIG. 8 is a schematic cross-sectional view of a bit body of a directional PDC bit according to the present invention.
Illustration of the drawings:
1. a drill bit body; 2. a load assembly; 201. a carrier; 202. dividing the net; 203. reinforcing the sleeve; 3. an orientation assembly; 301. a reinforcing seat; 302. a drill shaft; 303. a conical head; 304. a helical blade; 4. a drive assembly; 401. an outer ring; 402. a bridge-type connecting frame; 403. an inner ring; 404. convex particles; 5. a first resistance reducing component; 501. a first firing rod; 502. a pointed cone; 503. a first driving part; 6. a support assembly; 601. connecting sleeves; 602. a first sliding connecting groove; 603. a first sliding connection seat; 604. a first support spring; 7. a counter shaft; 8. a main shaft; 9. a first bearing; 10. a resistance reducing component II; 101. a second firing rod; 102. e, stabbing; 103. a driving part II; 11. passing through the connecting hole; 12. a drive sleeve; 13. a power conversion assembly; 131. a driving gear; 132. a driven gear; 133. a second bearing; 134. a transfer shaft; 135. a toothed ring; 136. a fixed seat; 14. a card interface; 15. a steel hoop; 16. a vibration head; 17. a second sliding connection seat; 18. a second sliding connecting groove; 19. a second support spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A PDC drill bit for directional drilling comprises a drill bit main body 1, a load component 2 is fixedly connected on the inner side wall of the drill bit main body 1, a directional component 3 is fixedly connected on the inner side wall of the load component 2, a driving component 4 is further arranged on the inner side of the drill bit main body 1, the driving component 4 is positioned below the load component 2, a through connecting hole 11 is arranged on the surface of the drill bit main body 1 corresponding to the position of the driving component 4, a supporting component 6 is clamped in the through connecting hole 11, a resistance reducing component is sleeved in the supporting component 6, the driving component 4 is fixedly connected to the surface of the auxiliary shaft 7, the bottom end of the auxiliary shaft 7 is fixedly connected with a main shaft 8, a first bearing 9 is sleeved on the surface of the main shaft 8, the first bearing 9 is clamped in a clamping opening 14 arranged at the bottom of a power conversion component 13, and the power conversion assembly 13 is positioned at the inner side of the driving sleeve 12, and the top of the driving sleeve 12 is fixedly connected with the bottom of the drill bit body 1.
Specifically, as shown in fig. 1, the load assembly 2 includes a carrier frame 201, an outer contour surface of the carrier frame 201 is fixedly connected with an inner sidewall of the drill main body 1, the carrier frame 201 is fixedly connected with the drill main body 1 through a partition net 202, and a reinforcing sleeve 203 is fastened to a top portion of the carrier frame 201.
Specifically, as shown in fig. 1, the directional component 3 includes a reinforcing seat 301, an outer contour surface of the reinforcing seat 301 is fixedly connected with an inner surface of the reinforcing sleeve 203, a drill spindle 302 is fixedly connected to a top portion of the reinforcing seat 301, a conical head 303 is fixedly connected to a top end of the drill spindle 302, and a helical blade 304 is further wound and connected to a surface of the drill spindle 302, through the designed load component 2 and directional component 3, the drill main body 1 is driven to rotate by a driving force of the spindle 8, due to the fact that the load component 2 is used as a connecting medium between the directional component 3 and the drill main body 1, the drill main body 1 synchronizes a torsion force to the drill spindle 302 through the carrier frame 201, so that the conical head 303 and the helical blade 304 on the drill spindle 302 perform a synchronous excavation action with the drill main body 1, and the carrier frame 201 also drives the slitting net 202 to rotate, and by a pushing force generated by the helical blade 304 in a transmission process, the crushing of mineral lumps can be achieved.
Specifically, as shown in fig. 1, the support assembly 6 includes a connection sleeve 601, the connection sleeve 601 is clamped in the through connection hole 11, a first sliding connection groove 602 is formed in an inner side wall of the connection sleeve 601, a first sliding connection seat 603 is slidably connected in the first sliding connection groove 602, a side end surface of the first sliding connection seat 603 is fixedly connected to an end surface of an inner side of the first sliding connection groove 602 through a first support spring 604, and by designing the drive assembly 4, the support assembly 6 and the resistance reducing assembly one 5, in a process that the main shaft 8 drives the drill bit body 1 to perform a rotation action, a torsion force is applied to the inner ring 403 through the auxiliary shaft 7, the inner ring 403 drives the outer ring 401 to perform a rapid rotation action through the bridge-shaped connection frame 402, and when the protruding particles 404 are in contact with the driving part one 503, the pointed cone 502 on the first firing rod 501 can be rapidly fired.
Specifically, as shown in fig. 1, the driving assembly 4 includes an outer ring 401, an inner ring 403 is disposed inside the outer ring 401, the inner ring 403 is fixedly connected to the surface of the secondary shaft 7, an outer contour surface of the inner ring 403 is fixedly connected to the inner surface of the outer ring 401 through a bridge 402, and a protruding particle 404 is fixedly connected to a position of the outer contour surface of the outer ring 401 corresponding to the resistance reducing assembly.
Specifically, as shown in fig. 1, the first sliding connection seat 603 has a side view with a T-shaped cross section, and the first sliding connection seat 602 has a side view with a T-shaped cross section.
Specifically, as shown in fig. 1, the power conversion assembly 13 includes a driving gear 131, the driving gear 131 is fixedly connected to the surface of the spindle 8, the surface of the spindle 8 is engaged with a driven gear 132, the surface of the driven gear 132 is also engaged with a toothed ring 135, the outer contour surface of the toothed ring 135 is fixedly connected to the inner surface of the driving sleeve 12, and through the designed power conversion assembly 13, during the rotation of the spindle 8, the driving gear 131, the driven gear 132 and the toothed ring 135 will be utilized to apply a torque force to the driving sleeve 12, and the driving sleeve 12 drives the drill main body 1 to perform drilling work, and on this basis, a relative motion relationship with the driving assembly 4 can also be realized.
Specifically, as shown in fig. 1, the top of the driven gear 132 is clamped with a second bearing 133, a transfer shaft 134 is sleeved in the second bearing 133, an end of the transfer shaft 134 is fixedly connected with a fixed seat 136, an outer contour surface of the fixed seat 136 is fixedly connected with an inner side wall of the driving sleeve 12, and the clamping opening 14 is opened at the bottom of the fixed seat 136.
Specifically, as shown in fig. 1, the resistance reducing assembly includes a first resistance reducing assembly 5 and a second resistance reducing assembly 10, the first resistance reducing assembly 5 includes a first firing rod 501, the first firing rod 501 is fixedly connected with the opposite surface of the first sliding connection seat 603, one end of the first firing rod 501 close to the protruding particle 404 is fixedly connected with a first driving member 503, and the other end of the first firing rod 501 is fixedly connected with a pointed cone 502.
Example two
A PDC drill bit for directional drilling comprises a drill bit main body 1, a load component 2 is fixedly connected on the inner side wall of the drill bit main body 1, a directional component 3 is fixedly connected on the inner side wall of the load component 2, a driving component 4 is further arranged on the inner side of the drill bit main body 1, the driving component 4 is positioned below the load component 2, a through connecting hole 11 is arranged on the surface of the drill bit main body 1 corresponding to the position of the driving component 4, a supporting component 6 is clamped in the through connecting hole 11, a resistance reducing component is sleeved in the supporting component 6, the driving component 4 is fixedly connected to the surface of the auxiliary shaft 7, the bottom end of the auxiliary shaft 7 is fixedly connected with a main shaft 8, a first bearing 9 is sleeved on the surface of the main shaft 8, the first bearing 9 is clamped in a clamping opening 14 arranged at the bottom of a power conversion component 13, and the power conversion assembly 13 is positioned at the inner side of the driving sleeve 12, and the top of the driving sleeve 12 is fixedly connected with the bottom of the drill bit body 1.
Specifically, as shown in fig. 1, the load assembly 2 includes a carrier frame 201, an outer contour surface of the carrier frame 201 is fixedly connected with an inner sidewall of the drill main body 1, the carrier frame 201 is fixedly connected with the drill main body 1 through a partition net 202, and a reinforcing sleeve 203 is fastened to a top portion of the carrier frame 201.
Specifically, as shown in fig. 1, the directional component 3 includes a reinforcing seat 301, an outer contour surface of the reinforcing seat 301 is fixedly connected with an inner surface of the reinforcing sleeve 203, a drill spindle 302 is fixedly connected to a top portion of the reinforcing seat 301, a conical head 303 is fixedly connected to a top end of the drill spindle 302, and a helical blade 304 is further wound and connected to a surface of the drill spindle 302, through the designed load component 2 and directional component 3, the drill main body 1 is driven to rotate by a driving force of the spindle 8, due to the fact that the load component 2 is used as a connecting medium between the directional component 3 and the drill main body 1, the drill main body 1 synchronizes a torsion force to the drill spindle 302 through the carrier frame 201, so that the conical head 303 and the helical blade 304 on the drill spindle 302 perform a synchronous excavation action with the drill main body 1, and the carrier frame 201 also drives the slitting net 202 to rotate, and by a pushing force generated by the helical blade 304 in a transmission process, the crushing of mineral lumps can be achieved.
Specifically, as shown in fig. 1, the support assembly 6 includes a connection sleeve 601, the connection sleeve 601 is clamped in the through connection hole 11, a first sliding connection groove 602 is formed in an inner side wall of the connection sleeve 601, a first sliding connection seat 603 is slidably connected in the first sliding connection groove 602, a side end surface of the first sliding connection seat 603 is fixedly connected with an end surface of an inner side of the first sliding connection groove 602 through a first support spring 604, and by the designed driving assembly 4, the support assembly 6 and the resistance reducing assembly two 10, in a process that the main shaft 8 drives the drill bit body 1 to perform a rotation action, a torsion force is also applied to the inner ring 403 through the auxiliary shaft 7, the inner ring 403 drives the outer ring 401 to perform a rapid rotation action through the bridge-type connection frame 402, and when the protruding particles 404 are in contact with the driving member two 103, the pointed cone 502 on the second rod 101 can be rapidly fired.
Specifically, as shown in fig. 1, the driving assembly 4 includes an outer ring 401, an inner ring 403 is disposed inside the outer ring 401, the inner ring 403 is fixedly connected to the surface of the secondary shaft 7, an outer contour surface of the inner ring 403 is fixedly connected to the inner surface of the outer ring 401 through a bridge 402, and a protruding particle 404 is fixedly connected to a position of the outer contour surface of the outer ring 401 corresponding to the resistance reducing assembly.
Specifically, as shown in fig. 1, the first sliding connection seat 603 has a side view with a T-shaped cross section, and the first sliding connection seat 602 has a side view with a T-shaped cross section.
Specifically, as shown in fig. 1, the power conversion assembly 13 includes a driving gear 131, the driving gear 131 is fixedly connected to the surface of the spindle 8, the surface of the spindle 8 is engaged with a driven gear 132, the surface of the driven gear 132 is also engaged with a toothed ring 135, the outer contour surface of the toothed ring 135 is fixedly connected to the inner surface of the driving sleeve 12, and through the designed power conversion assembly 13, during the rotation of the spindle 8, the driving gear 131, the driven gear 132 and the toothed ring 135 will be utilized to apply a torque force to the driving sleeve 12, and the driving sleeve 12 drives the drill main body 1 to perform drilling work, and on this basis, a relative motion relationship with the driving assembly 4 can also be realized.
Specifically, as shown in fig. 1, the top joint of driven gear 132 has second bearing 133, the switching axle 134 has been cup jointed in second bearing 133, the tip fixedly connected with fixing base 136 of switching axle 134, the outer profile face of fixing base 136 and the inside wall fixed connection of drive cover 12, and the bottom at fixing base 136 is seted up to joint mouth 14, the joint has steel hoop 15 on the drill bit main part 1, it has vibrations head 16 to cup joint in the steel hoop 15, and the position department that corresponds vibrations head 16 on the steel hoop 15 inside wall has seted up the second and has slided the connecting groove 18, sliding connection has second sliding connection seat 17 in the second sliding connection groove 18, the terminal surface department of second sliding connection seat 17 slides the inboard terminal surface fixed connection of connecting groove 18 through second supporting spring 19 and second, the opposite face fixed connection of second sliding connection seat 17 and vibrations head 16.
Specifically, as shown in fig. 1, the second resistance reducing assembly 10 includes a second firing bar 101, one end of the second firing bar 101 close to the protruding particle 404 is fixedly connected with a second driving member 103, and the other end of the second firing bar is fixedly connected with a pricker 102.
The working principle is as follows: when in use, in the process of rotation of the main shaft 8, the driving gear 131, the driven gear 132 and the gear ring 135 are utilized to apply torque force to the driving sleeve 12, the driving sleeve 12 drives the drill main body 1 to perform drilling work, and on the basis, relative motion relation with the driving assembly 4 can be realized, the drill main body 1 is driven to rotate by the driving force of the main shaft 8, because the load assembly 2 is used as a connecting medium between the directional assembly 3 and the drill main body 1, on one hand, the drill main body 1 synchronizes the torque force to the drill shaft 302 through the carrier frame 201, so that the cone head 303 and the helical blade 304 on the drill shaft 302 perform synchronous excavation with the drill main body 1, because the stress points of the cone head 303 are concentrated, the breakthrough performance is superior, and the dredging effect of the helical blade 304 is assisted, the stability of the working environment of the cone head 303 is improved, therefore, the cone head 303 can maintain relatively stable directional drilling action in the feeding process, on the other hand, the carrier frame 201 can also drive the dividing net 202 to rotate, and the crushing of mineral blocks can be realized by using the pushing pressure generated by the helical blades 304 in the transmission process, so that the mineral blocks can be effectively prevented from blocking the drilling well, the smooth operation of the drilling well is ensured, the main shaft 8 can also apply torsion on the inner ring 403 through the auxiliary shaft 7 in the process of driving the drill bit main body 1 to rotate, the inner ring 403 can drive the outer ring 401 to rapidly rotate through the bridge-type connecting frame 402, when the convex particles 404 are contacted with the driving part 503, the pointed cone 502 on the first firing rod 501 can be rapidly fired, the crushing treatment of large mineral blocks can be rapidly realized by using the stress at the pointed end of the pointed cone 502, the lateral resistance of the drill bit main body 1 in the drilling process is reduced, and the stability of the drill bit main body 1 in the working process is effectively ensured, in the process of driving the drill bit main body 1 to rotate, the main shaft 8 can apply torsion to the inner ring 403 through the auxiliary shaft 7, the inner ring 403 drives the outer ring 401 to rotate rapidly through the bridge-type connecting frame 402, when the protruding grains 404 contact with the driving part two 103, the pointed cone 502 on the firing rod two 101 can be fired rapidly, the stress at the tip of the pointed cone 502 is utilized, further crushing treatment on small mineral blocks can be achieved rapidly, the lateral resistance of the drill bit main body 1 in the drilling process is reduced, and the stability of the drill bit main body 1 in the working process is effectively guaranteed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. The PDC drill bit for directional drilling comprises a drill bit main body (1) and is characterized in that a load assembly (2) is fixedly connected onto the inner side wall of the drill bit main body (1), a directional assembly (3) is fixedly connected onto the inner side wall of the load assembly (2), a driving assembly (4) is further arranged on the inner side of the drill bit main body (1), the driving assembly (4) is located below the load assembly (2), a penetrating connecting hole (11) is formed in the position, corresponding to the driving assembly (4), on the surface of the drill bit main body (1), a supporting assembly (6) is connected into the penetrating connecting hole (11) in a clamping mode, a resistance reducing assembly is sleeved inside the supporting assembly (6), the driving assembly (4) is fixedly connected onto the surface of an auxiliary shaft (7), a main shaft (8) is fixedly connected to the bottom end of the auxiliary shaft (7), a first bearing (9) is sleeved on the surface of the main shaft (8), the first bearing (9) is clamped in a clamping interface (14) formed in the bottom of the power conversion assembly (13), the power conversion assembly (13) is located on the inner side of the driving sleeve (12), and the top of the driving sleeve (12) is fixedly connected with the bottom of the drill bit main body (1).
2. The PDC drill bit for directional drilling according to claim 1, wherein the load assembly (2) comprises a carrier frame (201), the outer contour surface of the carrier frame (201) is fixedly connected with the inner side wall of the drill bit main body (1), the carrier frame (201) is fixedly connected with the drill bit main body (1) through a dividing net (202), and a reinforcing sleeve (203) is clamped at the top of the carrier frame (201).
3. A PDC drill bit for directional drilling according to claim 2, characterized in that the directional assembly (3) comprises a reinforcement base (301), the outer contour surface of the reinforcement base (301) is fixedly connected with the inner surface of the reinforcement sleeve (203), the top of the reinforcement base (301) is fixedly connected with a drill shaft (302), the top end of the drill shaft (302) is fixedly connected with a cone head (303), and the surface of the drill shaft (302) is further wound and connected with a helical blade (304).
4. The PDC drill bit of directional drilling according to claim 3, wherein the support assembly (6) includes a connecting sleeve (601), the connecting sleeve (601) is clamped in the through connecting hole (11), a first sliding connecting groove (602) is formed in the inner side wall of the connecting sleeve (601), a first sliding connecting seat (603) is slidably connected in the first sliding connecting groove (602), and the side end face of the first sliding connecting seat (603) is fixedly connected with the end face of the inner side of the first sliding connecting groove (602) through a first support spring (604).
5. A PDC drill bit for directional drilling according to claim 4, characterized in that the drive assembly (4) comprises an outer ring (401), an inner ring (403) is arranged on the inner side of the outer ring (401), the inner ring (403) is fixedly connected to the surface of the secondary shaft (7), the outer contour surface of the inner ring (403) is fixedly connected with the inner surface of the outer ring (401) through a bridge type connecting frame (402), and a convex grain (404) is fixedly connected to the outer contour surface of the outer ring (401) at a position corresponding to the resistance reducing assembly.
6. The PDC drill bit for directional drilling of claim 5, wherein the first sliding connection seat (603) has a T-shaped cross-sectional side view and the first sliding connection slot (602) has a T-shaped cross-sectional side view.
7. A PDC drill bit for directional drilling according to claim 6, wherein the power conversion unit (13) comprises a driving gear (131), the driving gear (131) is fixedly connected to the surface of the main shaft (8), the surface of the main shaft (8) is engaged with a driven gear (132), the surface of the driven gear (132) is also engaged with a toothed ring (135), and the outer profile surface of the toothed ring (135) is fixedly connected with the inner surface of the driving sleeve (12).
8. The PDC drill bit for directional drilling according to claim 7, wherein the driven gear (132) is clamped with a second bearing (133) at the top, a transfer shaft (134) is sleeved in the second bearing (133), a fixed seat (136) is fixedly connected to the end of the transfer shaft (134), the outer contour surface of the fixed seat (136) is fixedly connected with the inner side wall of the driving sleeve (12), and the clamping opening (14) is formed at the bottom of the fixed seat (136).
9. The PDC drill bit for directional drilling according to claim 8, wherein the resistance reducing assembly comprises a first resistance reducing assembly (5) and a second resistance reducing assembly (10), the first resistance reducing assembly (5) comprises a first firing rod (501), the first firing rod (501) is fixedly connected with the opposite surface of the first sliding connecting seat (603), one end of the first firing rod (501), which is close to the convex grain (404), is fixedly connected with a first driving part (503), the other end of the first firing rod (501) is fixedly connected with a pointed cone (502), the drill bit body (1) is clamped with a steel hoop (15), the steel hoop (15) is sleeved with a vibrating head (16), a second sliding connecting groove (18) is formed in the inner side wall of the steel hoop (15) and corresponds to the vibrating head (16), and a second sliding connecting seat (17) is slidably connected in the second sliding connecting groove (18), the end face of the second sliding connecting seat (17) is fixedly connected with the end face of the inner side of the second sliding connecting groove (18) through a second supporting spring (19), and the opposite face of the second sliding connecting seat (17) is fixedly connected with the opposite face of the vibration head (16).
10. The PDC drill bit for directional drilling according to claims 1-9, wherein the second resistance reduction assembly (10) comprises a second firing rod (101), one end of the second firing rod (101) close to the protruding grain (404) is fixedly connected with a second driving piece (103), and the other end of the second firing rod is fixedly connected with a pricker (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248515.8A CN114607283A (en) | 2022-03-14 | 2022-03-14 | PDC drill bit for directional drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248515.8A CN114607283A (en) | 2022-03-14 | 2022-03-14 | PDC drill bit for directional drilling |
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| Publication Number | Publication Date |
|---|---|
| CN114607283A true CN114607283A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210248515.8A Pending CN114607283A (en) | 2022-03-14 | 2022-03-14 | PDC drill bit for directional drilling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370281A (en) * | 2022-08-29 | 2022-11-22 | 海门桦宇机械科技有限公司 | Soil layer drilling equipment for slowing down soil layer deformation |
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2022
- 2022-03-14 CN CN202210248515.8A patent/CN114607283A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370281A (en) * | 2022-08-29 | 2022-11-22 | 海门桦宇机械科技有限公司 | Soil layer drilling equipment for slowing down soil layer deformation |
| CN115370281B (en) * | 2022-08-29 | 2023-11-28 | 福建省水文地质工程地质勘察研究院 | Soil layer drilling equipment for slowing down deformation of soil layer |
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