CN112177544A - Detachable roller cone and PDC combined drill bit - Google Patents
Detachable roller cone and PDC combined drill bit Download PDFInfo
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- CN112177544A CN112177544A CN202011042801.6A CN202011042801A CN112177544A CN 112177544 A CN112177544 A CN 112177544A CN 202011042801 A CN202011042801 A CN 202011042801A CN 112177544 A CN112177544 A CN 112177544A
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- 238000005553 drilling Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 9
- 230000036346 tooth eruption Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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Classifications
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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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
- E21B10/08—Roller bits
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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
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
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- 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 provides a detachable roller and PDC combined drill bit, which belongs to the technical field of geological drilling and comprises a drill bit body, a supporting mechanism, a detaching mechanism and a fastening mechanism, wherein one end of the supporting mechanism is detachably connected with the drill bit body, the other end of the supporting mechanism is detachably connected with a drill rod, the supporting mechanism is used for supporting and driving the drill bit body to rotate, the detaching mechanism is arranged at the joint of the supporting mechanism and the drill bit body and used for connecting and detaching the drill bit body on the supporting mechanism, the fastening mechanism is arranged at the upper end of the supporting mechanism and used for connecting the drill bit body, the drill bit body is detachably connected with the supporting mechanism by virtue of the detaching mechanism, and the supporting mechanism is used for bearing the power of the drill rod and transmitting. The detachable cone and PDC combined drill bit provided by the invention has the technical effects that the cone and PDC combined drill bit is simple to detach, time-saving and labor-saving, can be operated by a single person, is low in labor intensity and is convenient to maintain and replace a drill bit body.
Description
Technical Field
The invention belongs to the technical field of geological drilling, and particularly relates to a detachable roller cone and PDC combined drill bit.
Background
In oil drilling, the most used drill bits which can adapt to various formations up to now are roller cone drill bits, and the most used roller cone drill bits are tri-roller cone drill bits which are widely applied to oil and gas drilling and other geological drilling. Polycrystalline diamond compact bits, referred to as PDC bits for short, are also used, which are formed by mounting small cutting blocks made of polycrystalline diamond (thin disk-shaped) or sintering them on a bit body, and are suitable for soft to medium-hard formations.
Roller cone drill bits have been used in hard abrasive formations in place of drag bits in the early part of the last century, but the disadvantage of such bits in drilling shale and other plastic formations has been the bottom mud pocket caused by the hold-down effect, which is exacerbated by the increase in drilling and bottom hole pressure and mud weight. To address this problem, roller cone drill bits have been improved by bit manufacturers over the years, and attempts have been made to combine two bits, thereby producing a composite bit that integrates roller cones and PDC bits, taking into account the lesser impact that drag bits or fixed cutter bits have on this aspect.
Although the composite drill bit combines the advantages of two types of drill bits and can be used for dealing with geological formations under various conditions, the composite drill bit has a compact structure, the whole drill bit is of an integrated structure and cannot be disassembled, when the roller cone and the PDC cutting tooth of the drill bit are damaged or failed, the whole drill bit needs to be disassembled to be repaired and replaced by new roller cone and PDC cutting tooth, and after the drill bit is installed on a drill rod, the drill bit is troublesome to disassemble, the composite drill bit is often operated by multiple persons, the labor intensity is high, time and labor are wasted, so that the composite drill bit convenient to disassemble needs to be researched.
Disclosure of Invention
The invention aims to provide a detachable cone and PDC combined drill bit, and aims to solve the technical problems that in the prior art, the cone and PDC combined drill bit is troublesome in detaching operation and time-consuming and labor-consuming.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a detachable roller cone and PDC combined drill bit, which comprises a drill bit body, a supporting mechanism, a dismounting mechanism and a fastening mechanism, wherein the drill bit body is provided with a roller cone and PDC cutting teeth and is used for cutting and drilling geological rock stratum; one end of the supporting mechanism is detachably connected with the drill bit body, the other end of the supporting mechanism is detachably connected with the drill rod, and the supporting mechanism is used for supporting and driving the drill bit body to rotate; the disassembly mechanism is arranged at the joint of the support mechanism and the drill bit body and is used for connecting and disassembling the drill bit body on the support mechanism; the fastening mechanism is arranged at the upper end of the supporting mechanism and used for connecting the drill bit body, the drill bit body is detachably connected with the supporting mechanism by means of the detaching mechanism, and the power of the supporting mechanism for bearing the drill rod is transmitted to the drill bit body through the fastening mechanism.
As another embodiment of this application, detachable gear wheel and PDC combination drill bit is still including locating the mechanism is inhaled to magnetism of supporting mechanism inner wall, the drill bit body with the back is connected to the supporting mechanism, magnetism is inhaled the mechanism and is used for attracting the drill bit body extremely inside the supporting mechanism.
As another embodiment of the application, the supporting mechanism comprises a fixing part and a connecting part, wherein the fixing part is in an inverted frustum shape and is used for being fixedly connected with the drill rod; the connecting part is sleeve-shaped, is fixedly connected with one end with a larger caliber of the fixing part and is coaxially arranged with the fixing part, the disassembling mechanism is positioned on the connecting part, the connecting part is used for being detachably connected with the drill bit body, and the connecting end of the drill bit body and the connecting end of the supporting mechanism are of a cylindrical structure.
As another embodiment of the application, the dismounting mechanism comprises a plurality of clamping teeth, a clamping protrusion and an ejector piece, wherein the clamping teeth are arranged on the inner side wall of the connecting part; the plurality of clamping protrusions are arranged on the outer circumference of the drill bit body, the plurality of clamping protrusions are respectively connected with the plurality of clamping teeth in a one-to-one correspondence mode, and after the drill bit body is inserted into the connecting portion, the drill bit body is arranged inside the supporting mechanism by means of the matching connection of the clamping teeth and the clamping protrusions; the ejection piece is a plurality of, and all transversely passes supporting mechanism, with the protruding correspondence of card is connected and can push up the card is protruding, is used for pushing up the card is protruding to being close to the direction of drill bit body removes, the card is protruding to being close to behind the drill bit body, the card protruding with the latch separation, the drill bit body can be followed extract in the connecting portion, be used for realizing the drill bit body with supporting mechanism's detachable is connected.
As another embodiment of the present application, the clamping protrusion includes an elastic portion and a protruding portion, the elastic portion is transversely disposed, one end of the elastic portion is fixedly connected to the outer wall of the drill bit body, the other end of the elastic portion is a free end, and the elastic portion can transversely extend and retract; the one end of bellying with the free end consolidation of elastic component, the other end are the free end, the bellying with the help of the flexible of elastic component can with the latch butt, the drill bit body plug-in to connecting portion in-process, the latch supports and overcomes the elastic component, the latch extremely the bellying lower extreme, the drill bit body is blocked in the connecting portion, through the ejection of ejector member the bellying is kept away from the latch, the drill bit body can be followed extract in the connecting portion.
As another embodiment of this application, all be equipped with a plurality of through-holes on the circumference of connecting portion, the ejector member passes the through-hole can push the protruding removal of card, the through-hole position with the position one-to-one of card is protruding, the through-hole is followed the connecting portion outside pierces through to the connecting portion is inboard.
As another embodiment of the present application, the fastening mechanism includes a plurality of slide rails, a slide block, and a connecting frame, the plurality of slide rails are uniformly distributed on the upper end surface of the supporting mechanism, and the sliding directions of the slide rails all face to the center of the supporting mechanism; the sliding block is connected to the sliding rail in a sliding mode, the sliding block is C-shaped, and a locking piece vertically penetrates through the upper end of the sliding block; one end of the connecting frame is fixedly arranged on the outer wall of the drill bit body, the other end of the connecting frame is a cantilever and can stretch into the sliding block to push the sliding block to slide and approach the drill bit body, so that the connecting frame is inserted into the sliding block, the connecting frame can be pushed through the locking piece and locked in the sliding block, and the power of the supporting mechanism is transmitted to the drill bit body through the sliding rail, the sliding block, the locking piece and the connecting frame.
As another embodiment of the application, the detachable roller cone and PDC combined drill bit further comprises a plurality of male buckles and a plurality of female buckles, wherein the male buckles are arranged on the connecting end of the drill bit body; the female button is a plurality of, all locates on the supporting mechanism inner wall or locate on the mechanism is inhaled to magnetism, the drill bit body with the supporting mechanism is connected the back, and it is rotatory the drill bit body can make the pin thread lock joint is in on the female button, realizes the drill bit body with the supporting mechanism's lock joint, the counter rotation the drill bit body can release the pin thread with the lock joint of female button, the drill bit body is followed the last dismantlement of supporting mechanism.
As another embodiment of the present application, the magnetic attraction mechanism includes a first magnet and a second magnet, the first magnet is disposed on the connection end of the drill bit body, and the position of the first magnet on the drill bit body is adjustable; the second magnet is arranged on the inner wall of the supporting mechanism, after the drill bit body is connected with the supporting mechanism, the first magnet and the second magnet are magnetically attracted with each other and used for connecting the drill bit body with the supporting mechanism, and the position of the second magnet on the supporting mechanism is adjustable.
As another embodiment of this application, be equipped with the closing cap on the outer end of through-hole, the closing cap upper end with connecting portion are articulated, but the closing cap the through-hole prevents the drill bit body rock piece gets into in boring the through-hole.
The invention provides a detachable roller cone and PDC combined drill bit, which has the beneficial effects that: compared with the prior art, the detachable roller cone and PDC combined drill bit comprises a drill bit body, a supporting mechanism, a detaching mechanism and a fastening mechanism, wherein the roller cone and the PDC cutting teeth are arranged on the drill bit body, and the drill bit body is used for cutting and drilling geological rock layers; one end of the supporting mechanism is detachably connected with the drill bit body, the other end of the supporting mechanism is detachably connected with the drill rod, and the supporting mechanism is used for supporting and driving the drill bit body to rotate; the disassembly mechanism is arranged at the joint of the support mechanism and the drill bit body and is used for connecting and disassembling the drill bit body on the support mechanism; fastening device locates the supporting mechanism upper end is used for connecting the drill bit body, the drill bit body with the help of disassembly body with the connection can be dismantled to the supporting mechanism, just the power that supporting mechanism accepted the drilling rod passes through fastening device transmits extremely on the drill bit body, has solved the gear wheel among the prior art and has assembled the drill bit and dismantle the operation troublesome, the technical problem that wastes time and energy, has and dismantles easy operation to gear wheel and PDC combination drill bit, labour saving and time saving, single operation of can accomplishing, low in labor strength is convenient for maintain the technical effect who changes the drill bit body.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a removable cone and PDC combined drill bit according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is a left side view of a bit body of a removable cone and PDC combination drill bit according to an embodiment of the present invention.
In the figure: 1. a drill bit body; 2. a support mechanism; 21. a fixed part; 22. a connecting portion; 221. a through hole; 222. sealing the cover; 3. a disassembly mechanism; 31. clamping teeth; 32. clamping convex; 321. an elastic portion; 322. a boss portion; 33. pushing the ejection piece; 4. a fastening mechanism; 41. a slide rail; 42. a slider; 43. a connecting frame; 44. a locking member; 5. a magnetic attraction mechanism; 51. a first magnet; 52. a second magnet; 6. a male buckle; 7. and (4) a female buckle.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a detachable roller cone and PDC combined drill bit according to the present invention will now be described. The detachable roller cone and PDC combined drill bit comprises a drill bit body 1, a supporting mechanism 2, a detaching mechanism 3 and a fastening mechanism 4, wherein roller cones and PDC cutting teeth are arranged on the drill bit body 1, and the drill bit body 1 is used for cutting and drilling geological rock strata; one end of the supporting mechanism 2 is detachably connected with the drill bit body 1, the other end of the supporting mechanism is detachably connected with the drill rod, and the supporting mechanism 2 is used for supporting and driving the drill bit body 1 to rotate; the disassembly mechanism 3 is arranged at the joint of the support mechanism 2 and the drill bit body 1 and is used for connecting and disassembling the drill bit body 1 on the support mechanism 2; the fastening mechanism 4 is arranged at the upper end of the supporting mechanism 2 and used for connecting the drill bit body 1, the drill bit body 1 is detachably connected with the supporting mechanism 2 by means of the detaching mechanism 3, and the power of the drill rod borne by the supporting mechanism 2 is transmitted to the drill bit body 1 through the fastening mechanism 4.
Compared with the prior art, the detachable cone and PDC combined drill bit comprises a drill bit body 1, a supporting mechanism 2, a dismounting mechanism 3 and a fastening mechanism 4, wherein cones and PDC cutting teeth are arranged on the drill bit body 1, and the drill bit body 1 is used for cutting and drilling geological rock layers; one end of the supporting mechanism 2 is detachably connected with the drill bit body 1, the other end of the supporting mechanism is detachably connected with the drill rod, and the supporting mechanism 2 is used for supporting and driving the drill bit body 1 to rotate; the disassembly mechanism 3 is arranged at the joint of the support mechanism 2 and the drill bit body 1 and is used for connecting and disassembling the drill bit body 1 on the support mechanism 2; the upper end of supporting mechanism 2 is located to lock joint mechanism 4, be used for connecting drill bit body 1, drill bit body 1 can be dismantled with supporting mechanism 2 with the help of detaching mechanism 3 and be connected, and supporting mechanism 2 accepts the power of drilling rod and passes through lock joint mechanism 4 and transmit to drill bit body 1 on, it is more troublesome to have solved gear wheel and PDC combination drill bit among the prior art and dismantle the operation, time-consuming and energy-consuming technical problem, it dismantles easy operation to gear wheel and PDC combination drill bit to have, time saving and labor saving, single can accomplish the operation, low in labor strength, be convenient for maintain the technical effect who changes drill bit body 1.
The bit body 1 is provided with a chip groove, gauge protection teeth and jet holes, the roller bit and the PDC bit can carry out cutting operation, the operation principle of the combined bit is referred to the operation method of the combined bit in the prior art, and the operation method is not introduced here, but only the fact that the bit body 1 and a drill rod can be detachably connected through a supporting mechanism 2 is described, when the bit body 1 is assembled and disassembled, the bit body 1 can be disassembled and assembled from the supporting mechanism 2 without operating the drill rod, the detachable connection mode is simple, the operation can be carried out by one person, the drilling into a rock stratum by the bit body 1 is easier and simpler, the phenomena of relative sliding or disjointing and the like cannot occur between the bit body 1 and the supporting mechanism 2, and the drilling progress and the efficiency of the bit body 1 are ensured.
Referring to fig. 1 to 4, the detachable roller cone and PDC combined drill bit further includes a magnetic attraction mechanism 5 disposed on an inner wall of the support mechanism 2, and after the drill bit body 1 is connected to the support mechanism 2, the magnetic attraction mechanism 5 is used for attracting the drill bit body 1 to the inside of the support mechanism 2. The quick connection between the drill bit body 1 and the supporting mechanism 2 can be completed through the magnetic attraction mechanism 5, and the magnetic attraction mechanism 5 generates magnetism to enable the drill bit body 1 and the supporting mechanism 2 to be mutually attracted.
Referring to fig. 1 to 4, the supporting mechanism 2 includes a fixing portion 21 and a connecting portion 22, the fixing portion 21 is in an inverted frustum shape and is used for being fixedly connected to a drill rod; connecting portion 22 is the cover barrel-shaped, with the great one end fixed connection of fixed part 21 bore and with the coaxial setting of fixed part 21, detaching mechanism 3 is located connecting portion 22, connecting portion 22 are used for dismantling with drill bit body 1 and are connected, are cylindrical structure with the link of supporting mechanism 2 on the drill bit body 1. One end of the fixing portion 21 is connected with the drill rod, and can be screwed or buckled, and the connecting portion 22 is connected with the drill bit body 1, so that detachable connection can be realized conveniently.
Referring to fig. 1 to 4, as a specific embodiment of a detachable roller cone and PDC combined drill bit according to the present invention, the detaching mechanism 3 includes a plurality of latches 31, a latch 32, and an ejector 33, where the latches 31 are all disposed on an inner sidewall of the connecting portion 22; the plurality of clamping protrusions 32 are arranged on the outer circumference of the drill bit body 1, the plurality of clamping protrusions 32 are correspondingly connected with the plurality of clamping teeth 31 one by one, and after the drill bit body 1 is inserted into the connecting part 22, the drill bit body 1 is arranged in the supporting mechanism 2 by means of the matching connection of the clamping teeth 31 and the clamping protrusions 32; the ejecting pieces 33 are multiple, transversely penetrate through the supporting mechanism 2, are correspondingly connected with the clamping protrusions 32 and can eject the clamping protrusions 32, the clamping protrusions 32 are used for ejecting the clamping protrusions 32 to move towards the direction close to the drill bit body 1, the clamping protrusions 32 are separated from the clamping teeth 31 after being ejected to the position close to the drill bit body 1, and the drill bit body 1 can be pulled out from the connecting portion 22 and is used for detachably connecting the drill bit body 1 and the supporting mechanism 2. When the drill bit body 1 is to be pulled out from the support mechanism 2, the pushing member 33 is manually pushed, the pushing member 33 pushes the clamping protrusion 32, the clamping protrusion 32 is separated from the latch 31, the limit on the drill bit body 1 is released, and the drill bit body 1 can be pulled out from the support mechanism 2.
Referring to fig. 1 to 4, as a specific embodiment of the detachable roller cone and PDC combined drill bit provided by the present invention, the snap 32 includes an elastic portion 321 and a protruding portion 322, the elastic portion 321 is transversely disposed, one end of the elastic portion 321 is fixedly connected to the outer wall of the drill bit body 1, the other end of the elastic portion is a free end, and the elastic portion 321 can transversely extend and retract; one end of the protruding portion 322 is consolidated with the free end of the elastic portion 321, the other end is a free end, the protruding portion 322 can abut against the latch 31 by means of the expansion of the elastic portion 321, the drill bit body 1 is inserted into the connecting portion 22, the latch 31 abuts against the protruding portion 322 and overcomes the elastic portion 321, the latch 31 abuts against the lower end of the protruding portion 322, the drill bit body 1 is clamped in the connecting portion 22, the latch 31 is far away from the ejection protruding portion 322 through the ejector 33, and the drill bit body 1 can be pulled out from the connecting portion 22.
Specifically, the elastic part 321 is an elastic part, the number of the elastic parts is two or four, the elastic parts are all arranged, elastic force can be generated, the ejection protrusion 322 moves towards the direction far away from the drill bit body 1, and then the ejection protrusion can be connected with the latch 31 in a clamped mode, and the ejection protrusion can be connected with the drill bit body 1 in the supporting mechanism 2 in a clamped mode. The ejector 33 is a push rod or a telescopic rod.
Referring to fig. 1 to 4, as an embodiment of a detachable roller cone and PDC combined drill bit according to the present invention, a plurality of through holes 221 are formed on a circumference of the connecting portion 22, the pushing member 33 passes through the through holes 221 and can push the locking protrusions 32 to move, the positions of the through holes 221 correspond to the positions of the locking protrusions 32, and the through holes 221 penetrate from an outer side of the connecting portion 22 to an inner side of the connecting portion 22. The ejector 33 penetrates through the through hole 221 to eject the clamping protrusion 32, the inner diameter of the through hole 221 is larger than the outer diameter of the ejector 33, and the length of the ejector 33 is larger than the wall thickness of the supporting mechanism 2.
Referring to fig. 1 to 4, the fastening mechanism 4 includes a plurality of slide rails 41, a plurality of slide blocks 42, and a connecting frame 43, the slide rails 41 are uniformly distributed on the upper end surface of the supporting mechanism 2, and the sliding directions of the slide rails 41 face the center of the supporting mechanism 2; the slide block 42 is connected on the slide rail 41 in a sliding way, the slide block 42 is C-shaped, and the locking piece 44 vertically penetrates through the upper end of the slide block 42; one end of the connecting frame 43 is fixedly arranged on the outer wall of the drill bit body 1, the other end of the connecting frame 43 is a cantilever and can extend into the sliding block 42, the sliding block 42 is pushed to slide and be close to the drill bit body 1, the connecting frame 43 is inserted into the sliding block 42, the connecting frame 43 can be pushed through the locking piece 44, the connecting frame 43 is locked in the sliding block 42, and the power of the supporting mechanism 2 is transmitted to the drill bit body 1 through the sliding rail 41, the sliding block 42, the locking piece 44 and the connecting frame 43. When the drill body 1 is placed in the support mechanism 2, the drill body 1 can be locked inside the support mechanism 2 by the lock member 44, and by detaching the lock member 44, the slider 42 is slid in the reverse direction, and the drill body 1 can be released.
As a specific embodiment of the detachable roller cone and PDC combined drill bit provided by the present invention, please refer to fig. 1 to 4, the detachable roller cone and PDC combined drill bit further includes a plurality of male buckles 6 and a plurality of female buckles 7, the male buckles 6 are all disposed on the connection end of the drill bit body 1; female buckle 7 is a plurality of, all locates on 2 inner walls of supporting mechanism or locate magnetism and inhale on the mechanism 5, and after drill bit body 1 is connected with supporting mechanism 2, rotatory drill bit body 1 can make 6 lock joints of pin thread on female buckle 7, realizes the lock joint of drill bit body 1 and supporting mechanism 2, and the lock joint of pin thread 6 and female buckle 7 can be released to reverse rotation drill bit body 1, and drill bit body 1 is dismantled from supporting mechanism 2.
Referring to fig. 1 to 4, the magnetic attraction mechanism 5 includes a first magnet 51 and a second magnet 52, the first magnet 51 is disposed on the connection end of the bit body 1, and the position of the first magnet 51 on the bit body 1 is adjustable; the second magnet 52 is arranged on the inner wall of the supporting mechanism 2, after the drill bit body 1 is connected with the supporting mechanism 2, the first magnet 51 and the second magnet 52 are magnetically attracted with each other for connecting the drill bit body 1 with the supporting mechanism 2, and the position of the second magnet 52 on the supporting mechanism 2 is adjustable. The positive pole (negative pole) of the first magnet 51 is aligned with the negative pole (positive pole) of the second magnet 52, and a mutual attraction force is generated, thereby firmly inserting the drill body 1 into the support mechanism 2.
Referring to fig. 1 to 4, as a specific embodiment of the drill bit with a combination of a detachable cone and a PDC, a cap 222 is disposed on an outer end of the through hole 221, an upper end of the cap 222 is hinged to the connecting portion 22, and the cap 222 can seal the through hole 221 to prevent rock debris from entering the through hole 221 during drilling of the drill bit body 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A detachable roller cone and PDC combined drill bit is characterized by comprising:
the bit body is provided with a roller cone and PDC cutting teeth and is used for cutting and drilling geological rock stratum;
one end of the supporting mechanism is detachably connected with the drill bit body, the other end of the supporting mechanism is detachably connected with the drill rod, and the supporting mechanism is used for supporting and driving the drill bit body to rotate;
the disassembly mechanism is arranged at the joint of the support mechanism and the drill bit body and used for connecting and disassembling the drill bit body on the support mechanism; and
the fastening mechanism is arranged at the upper end of the supporting mechanism and used for connecting the drill bit body, the drill bit body is detachably connected with the supporting mechanism by means of the detaching mechanism, and the power of the supporting mechanism for bearing the drill rod is transmitted to the drill bit body through the fastening mechanism.
2. The bit of claim 1, further comprising a magnetic attraction mechanism disposed on an inner wall of the support mechanism, wherein the magnetic attraction mechanism is configured to attract the bit body to an inside of the support mechanism after the bit body is connected to the support mechanism.
3. The bit according to claim 1, wherein the support mechanism comprises:
the fixing part is in an inverted frustum shape and is used for being fixedly connected with the drill rod; and
the connecting part is sleeve-shaped, is fixedly connected with one end with a larger caliber of the fixing part and is coaxially arranged with the fixing part, the disassembling mechanism is positioned on the connecting part, the connecting part is used for being detachably connected with the drill bit body, and the connecting end of the drill bit body and the connecting end of the supporting mechanism are of a cylindrical structure.
4. A removable cone and PDC combination drill bit according to claim 3 wherein the removal mechanism comprises:
the clamping teeth are multiple and are arranged on the inner side wall of the connecting part;
the plurality of clamping protrusions are arranged on the outer circumference of the drill bit body, the plurality of clamping protrusions are respectively connected with the plurality of clamping teeth in a one-to-one correspondence mode, and after the drill bit body is inserted into the connecting portion, the drill bit body is arranged inside the supporting mechanism by means of the matching connection of the clamping teeth and the clamping protrusions; and
the ejection piece is a plurality of, and all traverse the supporting mechanism, with the protruding correspondence of card is connected and can be pushed against the card is protruding, is used for pushing against the card is protruding to being close to the direction of drill bit body removes, the card is protruding to being close to behind the drill bit body, the card protruding with the latch separation, the drill bit body can be followed extract in the connecting portion, be used for realizing the drill bit body with supporting mechanism's detachable connection.
5. The bit according to claim 4, wherein the lug comprises:
the elastic part is transversely arranged, one end of the elastic part is fixedly connected to the outer wall of the drill bit body, the other end of the elastic part is a free end, and the elastic part can transversely stretch and retract; and
the bellying, one end with the free end consolidation of elastic component, the other end are the free end, the bellying with the help of the flexible of elastic component can with the latch butt, the drill bit body plug-in to connecting portion in-process, the latch supports and leans on the bellying overcomes the elastic component, the latch extremely the bellying lower extreme, the drill bit body is blocked in the connecting portion, through the ejection of ejecting piece the bellying is kept away from the latch, the drill bit body can be followed extract in the connecting portion.
6. The bit according to claim 5, wherein the connecting portion has a plurality of through holes formed on a circumference thereof, the pushing member passes through the through holes and pushes the locking protrusions to move, the through holes correspond to the locking protrusions one by one, and the through holes penetrate from an outer side of the connecting portion to an inner side of the connecting portion.
7. The bit according to claim 1, wherein the fastening mechanism comprises:
the sliding rails are uniformly distributed on the upper end surface of the supporting mechanism, and the sliding directions of the sliding rails face to the center of the supporting mechanism;
the sliding block is connected to the sliding rail in a sliding mode, the sliding block is C-shaped, and a locking piece vertically penetrates through the upper end of the sliding block; and
one end of the connecting frame is fixedly arranged on the outer wall of the drill bit body, the other end of the connecting frame is a cantilever and can stretch into the sliding block to push the sliding block to slide and approach the drill bit body, so that the connecting frame is inserted into the sliding block, the connecting frame can be pushed through the locking piece and locked in the sliding block, and the power of the supporting mechanism is transmitted to the drill bit body through the sliding rail, the sliding block, the locking piece and the connecting frame.
8. The bit according to claim 2, wherein the bit further comprises:
a plurality of male buckles are arranged on the connecting end of the drill bit body; and
the female buckle is a plurality of and is arranged on the inner wall of the supporting mechanism or on the magnetic attraction mechanism, the drill bit body is rotated after being connected with the supporting mechanism, the male buckle is buckled on the female buckle in a rotating mode, the drill bit body is buckled with the supporting mechanism, the drill bit body can release the buckling of the male buckle and the female buckle in a reverse rotating mode, and the drill bit body is detached from the supporting mechanism.
9. The bit of claim 2, wherein the magnetic attraction mechanism comprises:
the first magnet is arranged at the connecting end of the drill bit body, and the position of the first magnet on the drill bit body is adjustable; and
the second magnet is arranged on the inner wall of the supporting mechanism, after the drill bit body is connected with the supporting mechanism, the first magnet and the second magnet are magnetically attracted with each other and used for connecting the drill bit body with the supporting mechanism, and the position of the second magnet on the supporting mechanism is adjustable.
10. The bit according to claim 6, wherein a cap is provided at an outer end of the through hole, an upper end of the cap is hinged to the connecting portion, and the cap can cover the through hole to prevent rock debris from entering the through hole during drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042801.6A CN112177544B (en) | 2020-09-28 | 2020-09-28 | Detachable cone and PDC combined drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042801.6A CN112177544B (en) | 2020-09-28 | 2020-09-28 | Detachable cone and PDC combined drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112177544A true CN112177544A (en) | 2021-01-05 |
| CN112177544B CN112177544B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011042801.6A Active CN112177544B (en) | 2020-09-28 | 2020-09-28 | Detachable cone and PDC combined drill bit |
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| Country | Link |
|---|---|
| CN (1) | CN112177544B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338797A (en) * | 2021-07-02 | 2021-09-03 | 常州市捷甲非开挖管道技术有限公司 | Walking rotary drill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684273A (en) * | 2015-11-10 | 2017-05-17 | 富士康(昆山)电脑接插件有限公司 | Modular equipment and use method therefor |
| CN111173458A (en) * | 2020-03-12 | 2020-05-19 | 广东省建筑工程机械施工有限公司 | Drill bit connection structure for cast-in-situ bored pile |
| CN211370299U (en) * | 2020-01-02 | 2020-08-28 | 冯文意 | High efficiency oil development drill bit |
-
2020
- 2020-09-28 CN CN202011042801.6A patent/CN112177544B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684273A (en) * | 2015-11-10 | 2017-05-17 | 富士康(昆山)电脑接插件有限公司 | Modular equipment and use method therefor |
| CN211370299U (en) * | 2020-01-02 | 2020-08-28 | 冯文意 | High efficiency oil development drill bit |
| CN111173458A (en) * | 2020-03-12 | 2020-05-19 | 广东省建筑工程机械施工有限公司 | Drill bit connection structure for cast-in-situ bored pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338797A (en) * | 2021-07-02 | 2021-09-03 | 常州市捷甲非开挖管道技术有限公司 | Walking rotary drill |
| CN113338797B (en) * | 2021-07-02 | 2024-03-01 | 常州市捷甲非开挖管道技术有限公司 | Walking rotary drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112177544B (en) | 2023-05-02 |
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