CN115492520B - Cutting rock-breaking mixed PDC drill bit - Google Patents
Cutting rock-breaking mixed PDC drill bit Download PDFInfo
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- CN115492520B CN115492520B CN202211437043.7A CN202211437043A CN115492520B CN 115492520 B CN115492520 B CN 115492520B CN 202211437043 A CN202211437043 A CN 202211437043A CN 115492520 B CN115492520 B CN 115492520B
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- discharge pipe
- rotating rod
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- cutting
- fixed cylinder
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- 239000011435 rock Substances 0.000 claims abstract description 34
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 19
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 11
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 11
- 241001330002 Bambuseae Species 0.000 abstract description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 11
- 239000011425 bamboo Substances 0.000 abstract description 11
- 238000005065 mining Methods 0.000 abstract description 4
- 244000309464 bull Species 0.000 description 15
- 230000008859 change Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000203 accumulation affect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B7/003—Drilling with mechanical conveying means
- E21B7/005—Drilling with mechanical conveying means with helical conveying means
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
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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 belongs to the technical field of rock mining equipment, and relates to a cutting rock-breaking mixed PDC drill bit. Comprises a fixed cylinder, a first discharge pipe, a second discharge pipe, a first rotating rod, a second rotating rod and a crushing head. The lower end of the fixed cylinder is rotatably provided with a PDC cutting bit body. When the crushing head breaks the rock, the PDC cutting bit body cuts, and the mining quality is improved. Crushed rock soil is conveyed to the periphery of the conical cylinder through the first discharge pipe and the second discharge pipe, and the working space of the PDC cutting bit body is cleaned, so that subsequent work is facilitated. The second discharge pipe rotates along the inner wall of a conical barrel, so that the crushed rock soil discharged from the second discharge pipe falls to the periphery of the conical barrel, and the crushed rock soil is prevented from being accumulated at one position. The upper end of second discharge pipe moves to the outside of a toper section of thick bamboo, makes the interior exhaust detritus earth of second discharge pipe fall to the farther department of a toper section of thick bamboo, has enlarged the scope that the detritus earth dropped, and further the detritus earth that prevents is piled up.
Description
Technical Field
The invention belongs to the technical field of rock mining equipment, and relates to a cutting rock-breaking mixed PDC drill bit.
Background
Cutting of broken rock refers to a mechanical breaking method in which the surface of rock is cut by the cutting edges of a tool. The chips are broken by entering the rock under the axial thrust and moving along the rock surface by the cutting force.
In the document with publication number CN113790026A, a mixed PDC drill bit for cutting and breaking rock comprises an installation joint, a power assembly, a transmission assembly, a cutting assembly and a dust outlet assembly, wherein the power assembly of the device simultaneously drives the cutting, rock breaking and soil removing processes, so that the energy is saved, and the mining effect is good. However, the device discharges the soil in one direction, so that the soil is easy to accumulate at the discharge port, and the accumulation affects the subsequent soil discharge.
In order to solve the problems, the invention provides a cutting rock-breaking mixed PDC drill bit.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a cutting rock-breaking mixed PDC drill bit.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a mixed PDC drill bit for cutting and breaking rock comprises:
the upper end of the fixed cylinder is fixedly communicated with a conical cylinder, and an installation part is fixedly arranged at the upper end of the conical cylinder through a fixed rod; the lower end of the fixed cylinder is rotatably provided with a PDC cutting bit body;
the first discharge pipe is rotatably arranged in the fixed cylinder; an electric telescopic rod is rotationally arranged in the fixed cylinder, a fixed plate is fixedly arranged on a push rod of the electric telescopic rod, and the fixed plate is fixedly connected with the first exhaust pipe; the first discharge pipe moves up and down along the axial direction of the fixed cylinder;
the second discharge pipe is matched with the conical cylinder and communicated with the first discharge pipe through a soft connecting pipe; the flexible connecting pipe can be bent but cannot be contracted in the axial direction, and the flexible connecting pipe cannot be twisted and deformed; the second discharge pipe rotates around the axis of the conical cylinder, the inclination state of the second discharge pipe changes along with the up-and-down movement of the first discharge pipe, and the second discharge pipe extends out of or retracts into the outer side of the conical cylinder;
a second annular limiting slide way is formed in the upper end of the conical barrel; a hinge seat is in sliding fit with the second annular limiting slideway; the second discharge pipe is provided with a limiting half ring in a sliding manner, and the limiting half ring slides along the axial direction of the second discharge pipe; the limiting semi-ring is rotationally connected with the hinge seat;
the first rotating rod is rotatably arranged in the first discharge pipe, and a first spiral blade is fixedly arranged on the first rotating rod;
the second rotating rod is rotatably arranged in the conical cylinder and is connected with the upper end of the first rotating rod through a universal coupling; a second spiral blade is fixedly arranged on the second rotating rod;
the crushing head is fixedly arranged at the lower end of the first rotating rod;
the spiral directions of the first spiral blade and the second spiral blade are consistent.
Furthermore, both ends of the limiting half ring are fixedly provided with third limiting slide blocks; two limiting sliding grooves are formed in the second discharging pipe; the two third limiting slide blocks correspond to the two limiting slide grooves one by one; and the third limiting slide block is in limiting sliding fit with the limiting slide groove.
Further, the mounting member comprises a mounting plate and a mounting joint;
the mounting joint is fixedly arranged on the mounting plate and is provided with internal threads;
the mounting plate is fixedly arranged at the upper end of the conical barrel through a fixing rod.
Furthermore, a third annular limiting slideway is formed in the first discharge pipe, and a first annular gear is rotatably mounted in the third annular limiting slideway; the first ring gear is fixedly connected with the first rotating rod through a first connecting plate; a first motor is fixedly installed on the first exhaust pipe, and a first driving gear is fixedly installed on an output shaft of the first motor; the first drive gear is in mesh with the first ring gear.
Furthermore, a second mounting cavity is formed in the bottom of the fixed cylinder, a second motor is fixedly arranged in the second mounting cavity, and a second driving gear is fixedly arranged on an output shaft of the second motor; a second ring gear is rotatably mounted in the second mounting cavity and meshed with the second driving gear;
a sliding cavity is formed in the fixed cylinder and communicated with the second mounting cavity;
and the electric telescopic rod is fixedly connected with the second ring gear.
Furthermore, a third motor is fixedly installed in the second installation cavity, and an output shaft of the third motor is fixedly connected with a third driving gear; a third ring gear is fixedly arranged on the PDC cutting bit body; the third ring gear is meshed with a third driving gear; the third ring gear is rotatably disposed in the fixed cylinder.
Furthermore, a second connecting plate is fixedly arranged at the upper end of the second discharge pipe; one end of the second connecting plate is rotatably connected with the second rotating rod, and the other end of the second connecting plate is fixedly connected with the second discharge pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. when the broken head breaks the rock, PDC cutting bit body cuts, has improved the quality of exploitation.
2. The first spiral blade and the second spiral blade rotate simultaneously, broken rocks and soil are conveyed to the periphery of the tapered cylinder through the first discharge pipe and the second discharge pipe, the working space of the PDC cutting bit body is cleaned, and subsequent work is facilitated.
3. First discharge pipe rotates, makes the second discharge pipe rotate along the inner wall of a toper section of thick bamboo, makes the broken rock that comes out from the second discharge pipe and earth even fall around a toper section of thick bamboo, prevents that the detritus earth from piling up in a department, influences subsequent dumping.
4. The upper end of second discharge pipe moves to the outside of a toper section of thick bamboo, makes the interior exhaust detritus earth of second discharge pipe fall the farther department of a toper section of thick bamboo, has enlarged the scope that the detritus earth dropped, and further prevents that the detritus earth from piling up together and influencing subsequent dumping.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a PDC cutting bit body in accordance with the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 3 according to the present invention;
FIG. 6 is a schematic view of the connection of the second discharge pipe to the tapered cartridge in the present invention.
In the figure: 1. a fixed cylinder; 2. a tapered barrel; 3. a first discharge pipe; 4. a flexible connection pipe; 5. a second discharge pipe; 6. a first rotating lever; 7. a first helical blade; 8. a crushing head; 9. a universal coupling; 10. a second rotating lever; 11. a second helical blade; 12. a first connecting plate; 13. a first ring gear; 14. a first drive gear; 15. a first motor; 16. a sliding cavity; 17. a fixing plate; 18. an electric telescopic rod; 19. a second ring gear; 20. a second drive gear; 21. a second motor; 22. a second connecting plate; 23. a limiting half ring; 24. a limiting chute; 25. a hinged seat; 26. a second limit slide block; 27. a second annular limiting slideway; 28. fixing the rod; 29. mounting a plate; 30. installing a connector; 31. the PDC cutting the bit body; 32. a third ring gear; 33. a third motor; 34. a third drive gear.
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.
As shown in fig. 1 to 6, the technical solution adopted by the present invention is as follows: a cutting and rock breaking mixed PDC drill bit comprises a fixed cylinder 1. The upper end of the fixed cylinder 1 is fixedly provided with a conical cylinder 2, the fixed cylinder 1 is communicated with the conical cylinder 2, and the small-diameter end of the conical cylinder 2 is fixedly connected with the upper end of the fixed cylinder 1. The conical cylinder 2 is coaxial with the fixed cylinder 1.
The upper end of the cone-shaped barrel 2 is fixedly provided with a mounting member by a fixing rod 28.
Specifically, the mounting member includes a mounting plate 29 and a mounting adapter 30. A plurality of fixing rods 28 are fixedly arranged at the upper end of the conical barrel 2, but the number of the fixing rods 28 is not too large. The number of the fixing bars 28 is three in the present embodiment. Three fixing rods 28 are uniformly fixed on the upper end of the cone-shaped barrel 2. A mounting plate 29 is fixedly provided at the upper end of the fixing rod 28. The mounting adapter 30 is fixedly arranged at the upper end of the mounting plate 29, and the mounting adapter 30 is provided with an internal thread.
The PDC bit is fixedly mounted to the desired equipment via a mounting adapter 30.
The lower end of the fixed cylinder 1 is rotatably provided with a PDC cutting bit body 31.
Specifically, a second mounting cavity is formed in the bottom of the fixed cylinder 1, and a third motor 33 is fixedly mounted in the second mounting cavity. A third drive gear 34 is fixedly mounted on an output shaft of the third motor 33. A third ring gear 32 is secured to the PDC cutting bit body 31. The third ring gear 32 meshes with a third drive gear 34. The third ring gear 32 is rotatably disposed in the second mounting chamber of the lower end of the fixed cylinder 1.
The third motor 33 drives the third driving gear 34 to rotate, and the third ring gear 32 drives the PDC cutting bit body 31 to rotate, so that the PDC cutting bit body 31 completes cutting work.
The internal rotation of solid fixed cylinder 1 is provided with first outlet pipe 3, and first outlet pipe 3 sets up with solid fixed cylinder 1 is coaxial. The first discharge pipe 3 can also move up and down in the axial direction of the fixed cylinder 1.
Specifically, a sliding cavity 16 is longitudinally formed in the fixed cylinder 1, and the second mounting cavity is communicated with the sliding cavity 16. A second motor 21 is fixedly arranged in the second mounting cavity, and a second driving gear 20 is fixedly arranged on an output shaft of the second motor 21. The bottom of the sliding chamber 16 is rotatably provided with a second ring gear 19. In this embodiment, a first limiting slider is fixedly disposed on the bottom wall of the sliding cavity 16, and a first annular limiting slideway in sliding fit with the first limiting slider is disposed at the bottom of the second ring gear 19. The second ring gear 19 is meshed with a second drive gear 20. An electric telescopic rod 18 is fixedly mounted at the upper end of the second ring gear 19, a fixing plate 17 is fixedly arranged on a push rod of the electric telescopic rod 18, and the fixing plate 17 is fixedly connected with the first discharge pipe 3. The second electric telescopic rods 18 are two, and the two electric telescopic rods 18 are symmetrically distributed on two sides of the first discharge pipe 3.
The second motor 21 is operated to rotate the second driving gear 20, so that the second ring gear 19 rotates, and the second ring gear 19 drives the first discharge pipe 3 to rotate through the electric telescopic rod 18 and the fixing plate 17. The electric telescopic rod 18 is started to extend and contract the electric telescopic rod 18 according to a certain frequency, so that the first discharge pipe 3 reciprocates up and down.
The upper end of the first discharge pipe 3 is provided with a second discharge pipe 5, and the first discharge pipe 3 is communicated with the second discharge pipe 5. The second discharge pipe 5 is connected to the first discharge pipe 3 via a flexible connection pipe 4, the flexible connection pipe 4 being bendable but not contractible in the axial direction, and the flexible connection pipe 4 being not torsionally deformable. The second discharge pipe 5 is fitted with the conical cylinder 2. The second discharge pipe 5 rotates about the axis of the conical drum 2. As the first discharge pipe 3 moves up and down, the inclination angle of the second discharge pipe 5 is changed and at the same time the second discharge pipe 5 is extended or retracted to the outside of the tapered drum 2.
Specifically, the upper end surface of the conical cylinder 2 is provided with a second annular limiting slideway 27. The hinge seat 25 is limited and matched in the second annular limiting slideway 27 in a sliding way. A second limiting slide block 26 is fixedly arranged on the hinged seat 25. The second limit slider 26 is in sliding fit with the second annular limit slideway 27.
The upper end of the second discharge pipe 5 is provided with a limiting half ring 23, and the limiting half ring 23 is rotatably connected with the hinge seat 25 through a hinge shaft. The stopper half ring 23 is slidably connected to the second discharge pipe 5, and the stopper half ring 23 slides along the axial direction of the second discharge pipe 5.
Specifically, the two ends of the limiting half ring 23 are respectively and fixedly provided with a third limiting slide block. A limiting chute 24 is arranged on the outer circular surface of the second discharge pipe 5, and the limiting chute 24 is arranged along the axial direction of the second discharge pipe 5. The two limiting sliding grooves 24 correspond to the two third limiting sliding blocks one to one. The third limit slide block is in limit sliding fit with the limit sliding groove 24. The third limiting slide block is of a T-shaped structure, and the limiting slide groove 24 is matched with the third limiting slide block. The third limit slider cannot be separated from the limit chute 24.
When the first discharge pipe 3 rotates, the second discharge pipe 5 rotates around the axis of the fixed cylinder 1, and the hinge base 25 slides along the second annular limiting slide 27 through the second limiting slide 26, so that the second discharge pipe 5 is always close to the inner wall of the tapered cylinder 2, and the opening of the second discharge pipe 5 is always directed to the outside of the tapered cylinder 2. This allows the soil discharged from the second discharge pipe 5 to fall around the conical drum 2 rather than collect in one location, which can affect subsequent soil discharge. The second limiting slide block 26 is of a T-shaped structure, and the second annular limiting slide way 27 is matched with the second limiting slide block 26. The second limit slider 26 cannot be disengaged from the second annular limit slide 27.
When the first discharge pipe 3 moves upward, the upward rising amplitude of the lower end of the second discharge pipe 5 is larger than that of the upper end of the second discharge pipe 5, so that the second discharge pipe 5 gradually moves to the horizontal state, and the flexible connection pipe 4 bends and deforms. Meanwhile, the second discharge pipe 5 slides along the limiting half ring 23, so that the upper end of the second discharge pipe 5 moves towards the outer side of the conical cylinder 2, the soil discharged from the second discharge pipe 5 falls to a farther position of the conical cylinder 2, the falling range of the soil is expanded, and the soil is further prevented from being accumulated together to influence subsequent soil discharge.
A first rotating rod 6 is rotatably arranged in the first discharge pipe 3, and a first helical blade 7 is fixedly arranged on the first rotating rod 6. The lower end of the first rotating rod 6 is fixedly provided with a crushing head 8. The lowermost end of the crushing head 8 is below the lowermost end of the PDC cutting bit body 31 when the telescopic power cord 18 is in the retracted state. This enables the crushing head 8 to act on the rock all the time during operation.
Specifically, a third annular limiting slide way is arranged on the inner side wall of the first discharge pipe 3, and a first ring gear 13 is arranged in the third annular limiting slide way in a sliding manner. A first connecting plate 12 is fixedly arranged in the first ring gear 13, one end of the first connecting plate 12 is fixedly connected with the first ring gear 13, and the other end of the first connecting plate 12 is fixedly connected with the first rotating rod 6. The first link plates 12 have two, and the two first link plates 12 are symmetrically disposed at both sides of the first rotating shaft 6. A first motor 15 is fixedly mounted on the outer circular surface of the first discharge pipe 3, a first driving gear 14 is fixedly mounted on an output shaft of the first motor 15, and the first driving gear 14 is meshed with the first ring gear 13.
A second rotating rod 10 is rotatably arranged in the second discharge pipe 5, and a second helical blade 11 is fixedly arranged on the second rotating rod 10. The lower end of the second rotating rod 10 is connected with the upper end of the first rotating rod 6 through a universal joint 9. The spiral direction of the first spiral blade 7 in the first discharge pipe 3 is the same as the spiral direction of the second spiral blade 11 in the second discharge pipe 5.
Specifically, the second rotating rod 10 is rotatably connected to the second discharge pipe 5 through a second connecting plate 22. One end of the second connecting plate 22 is fixedly connected with the upper end of the second discharge pipe 5, and the other end of the second connecting plate 22 is rotatably connected with the upper end of the second rotating rod 10.
The first motor 15 is operated to rotate the first driving gear 14, which in turn rotates the first ring gear 13, which in turn rotates the first rotary shaft 6. The first rotating rod 6 drives the crushing head 8 to rotate, and rock crushing work is completed.
Meanwhile, the first rotating rod 6 drives the first spiral blade 7 to rotate, and the first spiral blade 7 drives the crushed rock soil to move upwards and enter the second discharge pipe 5.
Simultaneously first bull stick 6 drives second bull stick 10 through universal joint 9 and rotates, and second bull stick 10 drives second helical blade 11 and rotates, makes and enters into the interior detritus earth motion of second discharge pipe 5, makes the detritus earth of second discharge pipe 5 in arrange the outside of a toper section of thick bamboo 2 through the upper end of second discharge pipe 5.
The working principle is as follows:
in use, the PDC bit first needs to be fixedly mounted to the desired equipment via the mounting adapter 30. Then the first motor 15, the second motor 21, the third motor 33 and the electric telescopic rod 18 are started.
The third motor 33 works, the third driving gear 34 is driven by the third motor 33 to rotate, so that the third ring gear 32 rotates, and the third ring gear 32 drives the PDC cutting bit body 31 to rotate, so that the PDC cutting bit body 31 finishes cutting work.
Simultaneously first bull stick 6 drives first helical blade 7 and rotates, and first helical blade 7 drives cutting and broken detritus earth and enters into first discharge tube 3 and upward movement along first discharge tube 3, and makes the detritus earth enter into in the second discharge tube 5. Meanwhile, the first rotating rod 6 drives the second rotating rod 10 to move through the universal coupling 9, and the second rotating rod 10 drives the second spiral blade 11 to rotate, so that the crushed rock soil in the second discharge pipe 5 moves upwards along the second discharge pipe 5 and is discharged from the upper end of the second discharge pipe 5 and then falls outside the conical cylinder 2.
The second motor 21 drives the second driving gear 20 to work, and the second driving gear 20 drives the second ring gear 19 to rotate, so as to drive the first discharge pipe 3 to rotate around the axis of the fixed cylinder 1 through the electric telescopic rod 18 and the fixed plate 17. The first discharge pipe 3 drives the second discharge pipe 5 to rotate. The upper end of the second discharge pipe 5 rotates along the second annular limit slideway 27 through the limit half ring 23, so that the crushed rock soil discharged from the upper end of the second discharge pipe 5 falls to the periphery of the conical cylinder 2 instead of being gathered at one position. When the first discharge pipe 3 rotates, the first rotary rod 6 rotates about the axis of the fixed cylinder 1. The first rotating rod 6 drives the second rotating rod 10 to rotate. However, the rotational speed of the first rotating lever 6 relative to the first discharge pipe 3 and the rotational speed of the second rotating lever 10 relative to the second discharge pipe 5 are not changed.
The electric telescopic rod 18 performs a telescopic action with a certain frequency, so that the first discharge pipe 3 performs an up-and-down reciprocating action, and the first discharge pipe 3 drives the first rotating rod 6 and the first spiral blade 7 to perform up-and-down reciprocating movement.
Initially, the electric telescopic rod 18 is in the shortest state, and the upper end of the second discharge pipe 5 and the upper end of the second rotating rod 10 are both close to the upper end of the tapered cylinder 2. The second discharge pipe 5 discharges the crushed rock soil to a position close to the conical drum 2.
When the first discharge pipe 3 moves upwards, the first discharge pipe 3 drives the first rotating rod 6 to move upwards, the first rotating rod 6 pushes the second rotating rod 10 to enable the second rotating rod 10 to rotate around the universal coupling 9, an included angle between the second rotating rod 10 and the first rotating rod 6 is reduced, and the second rotating rod 10 and the second discharge pipe 5 change towards a horizontal state. In order to accommodate the change in the inclination angle of the second discharge pipe 5, the flexible connection pipe 4 is deformed, and the second discharge pipe 5 is rotated about the axis of the first rotation shaft 6. Simultaneously second discharge pipe 5 slides along spacing semi-ring 23, makes the upper end of second discharge pipe 5 and second bull stick 10 remove to the outside of toper section of thick bamboo 2, makes second discharge pipe 5 and second bull stick 10 have one section to stretch to the outside of toper section of thick bamboo 2, and then makes second discharge pipe 5 arrange the place of keeping away from toper section of thick bamboo 2 with rubble earth, further expansion rubble earth's range of piling up prevents that rubble earth from piling up and preventing subsequent dumping near toper section of thick bamboo 2 all around.
When first discharge tube 3 moves down, first discharge tube 3 drives first bull stick 6 downstream, first bull stick 6 pulling second bull stick 10 makes second bull stick 10 rotate round universal joint 9, the contained angle grow between second bull stick 10 and the first bull stick 6, second bull stick 10 and second discharge tube 5 change to vertical state, in order to adapt to the change of the inclination of second discharge tube 5, flexible connecting pipe 4 warp, second discharge tube 5 rotates round the articulated shaft. Meanwhile, the second discharge pipe 5 slides along the stop half ring 23, so that the second discharge pipe 5 and the upper end of the second rotating rod 10 move towards the inner direction of the conical cylinder 2, and the second discharge pipe 5 discharges the crushed rock soil to a position close to the conical cylinder 2. The second discharge pipe 5 and the second rotating lever 10 gradually return to the initial state.
When the first rotating rod 6 reciprocates up and down, the first rotating rod 6 drives the crushing head 8 to reciprocate up and down, so that the crushing head 8 breaks rocks. The crushing head 8 rotates while reciprocating up and down to enable the rock crushing effect to be better.
In addition, the fixing lever 28 does not interfere with the operation of the second discharge pipe 5. Namely, when the second discharge pipe 5 and the second rotating rod 10 are changed in inclination and are extended to the outside of the tapered cylinder 2, the movement interference with the fixed rod 28 is not generated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A hybrid PDC drill bit for cutting and breaking rock, comprising:
the device comprises a fixed cylinder (1), wherein a conical cylinder (2) is fixedly communicated with the upper end of the fixed cylinder (1), and an installation part is fixedly arranged at the upper end of the conical cylinder (2) through a fixed rod (28); the lower end of the fixed cylinder (1) is rotatably provided with a PDC cutting bit body (31);
the first discharge pipe (3) is rotatably arranged in the fixed cylinder (1); an electric telescopic rod (18) is rotatably arranged in the fixed cylinder (1), a fixed plate (17) is fixedly installed on a push rod of the electric telescopic rod (18), and the fixed plate (17) is fixedly connected with the first discharge pipe (3); the first discharge pipe (3) moves up and down along the axial direction of the fixed cylinder (1);
the second discharge pipe (5), the second discharge pipe (5) cooperates with conical cylinder (2), the said second discharge pipe (5) communicates with first discharge pipe (3) through the flexible joint pipe (4); the flexible connecting pipe (4) can be bent but cannot be contracted in the axial direction, and the flexible connecting pipe (4) cannot be twisted and deformed; the second discharge pipe (5) rotates around the axis of the conical cylinder (2), the inclined state of the second discharge pipe (5) changes along with the up-and-down movement of the first discharge pipe (3), and the second discharge pipe extends out of or retracts into the outer side of the conical cylinder (2);
a second annular limiting slide way (27) is formed in the upper end of the conical barrel (2); the second annular limiting slide way (27) is in sliding fit with a hinge seat (25); the second discharge pipe (5) is provided with a limiting half ring (23) in a sliding manner, and the limiting half ring (23) slides along the axial direction of the second discharge pipe (5); the limiting half ring (23) is rotationally connected with the hinging seat (25);
the first rotating rod (6) is rotatably arranged in the first discharge pipe (3), and a first spiral blade (7) is fixedly arranged on the first rotating rod (6);
the second rotating rod (10) is rotatably arranged in the conical barrel (2), and the second rotating rod (10) is connected with the upper end of the first rotating rod (6) through a universal coupling (9); a second spiral blade (11) is fixedly arranged on the second rotating rod (10);
the crushing head (8), the said crushing head (8) is fixed on the bottom end of the first rotating rod (6);
the spiral directions of the first spiral blade (7) and the second spiral blade (11) are consistent.
2. The hybrid PDC drill bit for cutting and breaking rock of claim 1, wherein: the two ends of the limiting semi-ring (23) are fixedly provided with third limiting slide blocks; two limiting sliding grooves (24) are formed in the second discharging pipe (5); the two third limiting slide blocks correspond to the two limiting slide grooves (24) one by one; the third limiting slide block is in limiting sliding fit with the limiting sliding groove (24).
3. The hybrid PDC drill bit for cutting and breaking rock of claim 1, wherein: the mounting part comprises a mounting plate (29) and a mounting joint (30);
the mounting joint (30) is fixedly arranged on the mounting plate (29), and the mounting joint (30) is provided with an internal thread;
the mounting plate (29) is fixedly arranged at the upper end of the conical barrel (2) through a fixing rod (28).
4. The hybrid PDC drill bit for cutting and breaking rock of claim 1, wherein: a third annular limiting slideway is formed in the first discharge pipe (3), and a first annular gear (13) is rotatably mounted in the third annular limiting slideway; the first ring gear (13) is fixedly connected with the first rotating rod (6) through a first connecting plate (12); a first motor (15) is fixedly mounted on the first discharge pipe (3), and a first driving gear (14) is fixedly mounted on an output shaft of the first motor (15); the first drive gear (14) meshes with the first ring gear (13).
5. The PDC drill bit capable of cutting and breaking rocks according to claim 1, wherein:
a second mounting cavity is formed in the bottom of the fixed cylinder (1), a second motor (21) is fixedly arranged in the second mounting cavity, and a second driving gear (20) is fixedly arranged on an output shaft of the second motor (21); a second ring gear (19) is rotatably mounted in the second mounting cavity, and the second ring gear (19) is meshed with a second driving gear (20);
a sliding cavity (16) is formed in the fixed cylinder (1), and the sliding cavity (16) is communicated with the second mounting cavity;
the electric telescopic rod (18) is fixedly connected with the second ring gear (19).
6. The PDC drill bit capable of cutting and breaking rocks according to claim 5, wherein: a third motor (33) is fixedly arranged in the second mounting cavity, and an output shaft of the third motor (33) is fixedly connected with a third driving gear (34); a third ring gear (32) is fixedly arranged on the PDC cutting bit body (31); the third ring gear (32) is meshed with a third drive gear (34); the third ring gear (32) is rotatably arranged in the fixed cylinder (1).
7. The hybrid PDC drill bit for cutting and breaking rock of claim 1, wherein: a second connecting plate (22) is fixedly arranged at the upper end of the second discharge pipe (5); one end of the second connecting plate (22) is rotatably connected with the second rotating rod (10), and the other end of the second connecting plate (22) is fixedly connected with the second discharge pipe (5).
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| CN202211437043.7A CN115492520B (en) | 2022-11-17 | 2022-11-17 | Cutting rock-breaking mixed PDC drill bit |
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| CN202211437043.7A CN115492520B (en) | 2022-11-17 | 2022-11-17 | Cutting rock-breaking mixed PDC drill bit |
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| CN115492520A CN115492520A (en) | 2022-12-20 |
| CN115492520B true CN115492520B (en) | 2023-02-07 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086756A (en) * | 2011-03-15 | 2011-06-08 | 中国石油大学(北京) | Hole-dilating drill for pressure reduction and speed acceleration |
| CN105041222B (en) * | 2015-07-13 | 2017-11-10 | 中国石油天然气集团公司 | Interior chip removal PDC drill bit |
| CN106194035A (en) * | 2016-08-12 | 2016-12-07 | 河南理工大学 | A kind of detachable cutting tooth spiral PDC drill bit |
| CN107842317B (en) * | 2017-11-27 | 2019-07-30 | 中煤科工集团西安研究院有限公司 | Hard-rock boring punching composite drill bit |
| CN213391971U (en) * | 2020-08-31 | 2021-06-08 | 新疆众达科创能源科技有限公司 | Turbine type torsion impactor |
| CN112593881B (en) * | 2020-11-30 | 2021-10-26 | 中国地质大学（北京） | Multifunctional shale geological exploration drill bit and working method thereof |
| CN113790026B (en) * | 2021-11-16 | 2022-02-08 | 胜利油田海胜实业有限责任公司 | Cutting rock-breaking mixed PDC drill bit |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Mixed PDC Bit for Cutting and Breaking Rock Effective date of registration: 20230504 Granted publication date: 20230207 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Hekou sub branch Pledgor: SHENGLI OIL FIELD WANHE OIL CONSTRUCTION TECHNIQUE LIMITED LIABILITY Co.,Ltd. Registration number: Y2023980039587 |
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Granted publication date: 20230207 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Hekou sub branch Pledgor: SHENGLI OIL FIELD WANHE OIL CONSTRUCTION TECHNIQUE LIMITED LIABILITY Co.,Ltd. Registration number: Y2023980039587 |
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Denomination of invention: A hybrid PDC drill bit for cutting and breaking rocks Granted publication date: 20230207 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Hekou sub branch Pledgor: SHENGLI OIL FIELD WANHE OIL CONSTRUCTION TECHNIQUE LIMITED LIABILITY Co.,Ltd. Registration number: Y2024980013418 |
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