CN111911078B - Reaming type rotary wing drilling tool - Google Patents
Reaming type rotary wing drilling tool Download PDFInfo
- Publication number
- CN111911078B CN111911078B CN202010914465.3A CN202010914465A CN111911078B CN 111911078 B CN111911078 B CN 111911078B CN 202010914465 A CN202010914465 A CN 202010914465A CN 111911078 B CN111911078 B CN 111911078B
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- rotor
- drill bit
- stabilizer
- piece
- block
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
Abstract
The utility model provides a reaming formula rotor drilling tool, includes rotor stabilizer, central drill bit and rotor piece, central drill bit coaxial arrangement is on rotor stabilizer, central drill bit can use the rotation center to rotate as the pivot relative rotation with rotor stabilizer, and the relative rotation angle of central drill bit and rotor stabilizer is injectd through circumference stop device with rotor stabilizer to central drill bit, be equipped with the installation clearance that is used for installing the rotor piece between central drill bit and the rotor stabilizer opposite face, the rotor piece passes through the rotor axle and installs on the opposite face of central drill bit or rotor stabilizer to axial through central drill bit and rotor stabilizer is spacing with the rotor piece in the installation clearance, the middle part of installation clearance is provided with the stirring piece of linking with central drill bit or rotor stabilizer, and this device rotor piece rotates in a flexible way, guarantees that all rotors can open in step and draw in, The rotor block is not easy to fall off.
Description
Technical Field
The invention relates to a reaming type rotary wing drilling tool.
Background
When the conventional rotary wing type or sliding block type hole expanding drilling tool operates under complex working conditions such as a withered stone layer and a sand layer, the rotary wing or the sliding block cannot be opened or closed due to the fact that the withered stone layer and the sand layer cannot provide enough extrusion force for the drilling tool, and the drilling tool is prone to being stuck in work, so that the drilling tool fails in advance; when the rotary wing type or sliding block type hole expanding drilling tool operates in different working methods such as horizontal operation or inclined operation, the rotary wings or the sliding blocks cannot be synchronously opened at the same time due to different extrusion forces applied to the rotary wings or the sliding blocks on different sides, and the drilling tool fails in advance due to uneven stress of the rotary wings or the sliding blocks in the working process; both of these conditions result in poor or no pore formation or are too costly to form.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the reaming type rotor drilling tool which has the advantages that the rotor blocks rotate flexibly, all the rotors can be synchronously opened and closed, and the rotor blocks are not easy to fall off.
The invention is realized by adopting the following implementation scheme:
a reaming type rotor drilling tool comprises a rotor rod stabilizer 1, a central drill bit 3 and a rotor block, wherein the central drill bit 3 is coaxially arranged on the rotor rod stabilizer 1, the central drill bit 3 and the rotor rod stabilizer 1 can rotate relative to each other by taking a rotation center as a rotating shaft, the central drill bit 3 and the rotor rod stabilizer 1 limit the relative rotation angle of the central drill bit 3 and the rotor rod stabilizer 1 through a circumferential limiting device, an installation gap for installing the rotor block 2 is arranged between the opposite surfaces of the central drill bit 3 and the rotor rod stabilizer 1, the rotor block 2 is installed on the opposite surfaces of the central drill bit 3 or the rotor rod stabilizer 1 through a rotor shaft, the rotor block 2 is limited in the installation gap through the axial limiting of the central drill bit 3 and the rotor rod stabilizer 1, a stirring part 7 linked with the central drill bit 3 or the rotor rod stabilizer 1 is arranged in the middle part of the installation gap, during the initial state, the working face 23 of rotor piece 2 contracts in the axial projection of center drill bit 3, and during the expansion state, rotor stabilizer 1 and center drill bit 3 relative rotation promote the rotor piece 2 through stirring piece 7 and expand, and during the folded state, promote the rotor piece 2 through stirring piece 7 and fold, and the rotor piece returns to initial position through the frictional resistance of stratum at last.
By adopting the structure, when the drilling tool starts to work, the rotor wing rod stabilizer rotates to perform relative rotation with the central drill bit, in the relative rotation process, the poking piece 7 rotates to push the working surface of the rotor block to lead the rotor block to rotate and unfold around the rotor shaft, when the drilling tool is finished, the drilling tool is reversed, relative rotation is firstly carried out between the rotor wing rod stabilizer and the central drill bit, so that the shifting piece 7 returns to the original position, the rotor block is driven by the shifting piece to rotate around the rotor shaft to push the rotor block to fold, and finally the rotor block returns to the original position through the frictional resistance of the rock stratum, the device is different from the traditional rotor drilling tool in that the shifting piece drives the rotor block to rotate, therefore, all the rotor wing blocks can be synchronously opened, and the rotor wing or the sliding block cannot be out of work normally due to the fact that the drilling tool is operated under complex working conditions and different working methods.
In this embodiment, the toggle member is disposed in the installation gap to divide the installation gap into a plurality of installation areas 8 corresponding to the number of the rotor blocks 2, the rotor blocks 2 are installed in the installation areas 8 in a centrosymmetric manner by taking the rotation center as a symmetry axis, a toggle member force-bearing surface 71 and a second contact surface 73 are disposed on one side of the toggle member facing the rotor blocks 2, one end of one side of the rotor blocks 2 facing the toggle member, which faces the rotor shaft 21 as a boundary line, is a first contact surface 24 opposite to the second contact surface 73, the other end of the one side of the rotor blocks 2 is a rotor force-bearing surface 22 opposite to the toggle member force-bearing surface 71, and one side of the rotor blocks 2 facing the rock formation in the unfolded state is a working surface 23 for shearing.
With the structure, the device has two embodiments, wherein the first embodiment is as follows: the shifting piece 7 is fixed on the central drill bit 3, the rotor block 2 is rotatably mounted on the rotor stabilizer 1 through the rotor shaft 21, in the embodiment, in the unfolding process of the rotor block, the second contact surface 73 of the shifting piece pushes the first contact surface 24 of the rotor block 2 to push the working surface of the rotor block 2 out of the mounting area 8, when the shifting piece 7 rotates to the final state, the working surface of the rotor block 2 is out of the mounting area 8, the rotor stressed surface 22 of the rotor block 2 is supported on the shifting piece stressed surface 71 of the shifting piece in a surface contact mode, and in the folding process, the shifting piece stressed surface 71 of the shifting piece 7 pushes the rotor stressed surface 22 of the rotor block 2 to push the shifting piece 7 back to the initial state.
The second embodiment is as follows: the poking piece 7 is fixed on the rotor wing rod stabilizer 1, the rotor wing block 2 is rotatably installed on the central drill bit 3 through the rotor wing shaft 21, in the unfolding process of the rotor wing block, the poking piece stress surface 71 of the poking piece pushes the rotor wing stress surface 22 of the rotor wing block 2 to push the working surface of the rotor wing block 2 out of the installation area 8, when the poking piece 7 rotates to the final state, the working surface of the rotor wing block 2 is located outside the installation area 8, the rotor wing stress surface 22 of the rotor wing block 2 is supported on the poking piece stress surface 71 in a surface contact mode, and in the folding state, the second contact surface 73 of the poking piece 7 pushes the first contact surface 24 of the rotor wing block 2 to push the poking piece 7 back to the initial state.
In the course of the work, when the rotor piece was opened final state, rotor piece 2 was through rotor atress face and the stirring piece atress face contact of stirring the piece, through the contact of face with the face, the impact force that the rotor piece will creep into the in-process was transferred to stirring on the piece through the form of face, prevented that point contact or line contact from causing great impact, caused stirring the destruction of piece, can prolong the life-span of whole device.
In the present embodiment, a groove 72 for preventing the dial from interfering with the rotor shaft 21 is provided between the dial receiving surface 71 and the second contact surface 73 on the dial upper surface side facing the rotor block 2.
In the present embodiment, the dial member is a triangular dial plate, and three rotor blocks 2 are provided.
In this embodiment, the tail end lateral surface of center drill bit 3 is equipped with annular spacing groove 33 along circumference, be equipped with the pinhole that hole and annular spacing groove 33 position correspond on the rotor stabilizer, the tail end of center drill bit 3 is installed including downthehole and through the horizontal round pin 4 and the split pin 5 of cartridge in pinhole and annular spacing groove 33 with center drill bit 3 and rotor stabilizer axial spacing, in the annular spacing groove 33 and rotor stabilizer inner bore wall between the installation steel ball 6 ball formation ball connection.
In this embodiment, circumference stop device is including setting up a plurality of spline grooves 12 on rotor stabilizer inner hole inner wall and setting up at the spline 31 of 3 tail ends of center drill bit, spline groove 12 is greater than spline 31.
In this embodiment, the toggle member 7 is integrally formed with the center drill 3 or the rotor stabilizer.
In this embodiment, one side of rotor block 2 is equipped with rotor shaft 21, and the opposite side is equipped with the guide post, be equipped with respectively on central drill bit 3 and the rotor stabilizer with rotor shaft 21 assorted shaft hole 9 and with guide post assorted guide way 10.
In conclusion, the device has simple structure and convenient processing; the accessories are convenient to disassemble, replace and maintain; the rotor wing block can rotate flexibly, so that the rotor wing block can be opened and closed conveniently; the reliability of the product is high, and the rotor wing block is not easy to fall off; meanwhile, the problem that when other rotary wing or sliding block drilling tools meet complex working conditions and work in different working methods, the rotary wing or the sliding block cannot be synchronously opened at the same time to cause the drilling tool to fail in advance is solved, and the problem that the drilling tool is stuck when working under a complex rock stratum is also solved.
Drawings
Fig. 1(a) is a perspective view of the present invention in an expanded state.
Fig. 1(b) is a perspective view of the furled state of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3(a) is a front view of embodiment 1 of the present invention.
Fig. 3(b) is a sectional view taken along line a-a in fig. 3 (a).
FIG. 3(c) is a cross-sectional view at B-B of FIG. 3 (a).
Fig. 4 is a perspective view of a rotor stabilizer in accordance with embodiment 1 of the present invention.
Fig. 5 is a perspective view of a center bit according to example 1 of the present invention.
Fig. 6 is a perspective view of a rotor block according to embodiment 1 of the present invention.
Fig. 7(a) is a diagram illustrating a positional relationship between the toggle member and the rotor block in the closed state according to embodiment 1 of the present invention.
Fig. 7(b) is a state diagram of a rotor block deployment process according to embodiment 1 of the present invention.
Fig. 7(c) is a development state diagram of the rotor block of the embodiment 1 of the present invention when it is completely developed.
Fig. 7(d) is a state diagram of rotor blocks of embodiment 1 of the present invention ready to be stowed.
Fig. 7(e) is a first state diagram of the rotor block furling process in embodiment 1 of the present invention.
Fig. 7(f) is a second state diagram of the rotor block furling process in embodiment 1 of the present invention.
Fig. 8 is an exploded view of example 2 of the present invention.
Fig. 9(a) is a front view of embodiment 2 of the present invention.
Fig. 9(b) is a cross-sectional view at C-C of fig. 9 (a).
Figure 10 is a perspective view of a rotor stabilizer according to embodiment 2 of the present invention.
Figure 11 is a perspective view of a center bit of example 2 of the present invention.
Fig. 12(a) is a diagram illustrating a positional relationship between the toggle member and the rotor block in the closed state according to embodiment 2 of the present invention.
Fig. 12(b) is a first state diagram of a rotor block deployment process according to embodiment 2 of the present invention.
Fig. 12(c) is a development state diagram of the rotor block of the embodiment 2 of the present invention when it is fully developed.
Fig. 12(d) is a state diagram of rotor blocks of embodiment 2 of the present invention ready to be stowed.
Fig. 12(e) is a first state diagram of the rotor block furling process in embodiment 2 of the present invention.
Fig. 12(f) is a second state diagram of the rotor block furling process in embodiment 2 of the present invention.
Fig. 13 is an exploded view of example 3 of the present invention.
Figure 14 is a perspective view of a rotor stabilizer according to embodiment 3 of the present invention.
Figure 15 is a perspective view of a center bit of example 3 of the present invention.
Fig. 16 is a perspective view of a rotor block according to embodiment 3 of the present invention.
Fig. 17(a) is a view showing a rotor block in a collapsed state according to embodiment 3 of the present invention.
Fig. 17(b) is a developed state diagram of rotor blocks according to embodiment 3 of the present invention.
In the attached drawings, 1, a rotor stabilizer, 11, an inner hole, 12, a spline groove, 2, a rotor block, 21, a rotor shaft, 22, a rotor stressed surface, 23, a working surface, 24, a first contact surface, 25, a guide post, 3, a center drill bit, 31, a spline, 32, a tail end of the center drill bit, 33, an annular limiting groove, 4, a transverse pin, 5, a split pin, 6, a steel ball, 7, a stirring piece, 71, a stirring piece stressed surface, 72, a groove, 73, a second contact surface, 8, an installation area, 9, a shaft hole, 10 and a guide groove.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1:
as shown in fig. 1(a), 1(b), 2, 3(a), 3(b), 3(c), 4, 5, 6, a reaming type rotary wing drilling tool comprises a rotary wing stabilizer 1, a center drill bit 3 and a rotary wing block 2, wherein the center drill bit 3 is coaxially installed on the rotary wing stabilizer 1, the center drill bit 3 and the rotary wing stabilizer 1 can relatively rotate by taking a rotation center as a rotating shaft, the center drill bit 3 and the rotary wing stabilizer limit the relative rotation angle of the center drill bit 3 and the rotary wing stabilizer through a circumferential limiting device, an installation gap for installing the rotary wing block 2 is arranged between the opposite surfaces of the center drill bit 3 and the rotary wing stabilizer, the rotary wing block 2 is installed in a shaft hole 9 of the rotary wing stabilizer 1 through a rotary wing shaft 21, and the rotary wing block 2 is limited in the installation gap through the axial limiting of the center drill bit 3 and the rotary wing stabilizer 1, a poking part 7 linked with the center drill bit 3 is arranged in the middle of the installation gap, the toggle piece 7 is integrally formed with the center drill 3,
in this embodiment, the toggle member is a triangular dial plate, the rotor blocks 2 are three, the toggle member 7 is disposed in the installation gap to divide the installation gap into three installation areas 8 corresponding to the number of the rotor blocks 2, the rotor blocks 2 are installed in the installation areas 8 in a central symmetry manner with the rotation center as a symmetry axis, a toggle member force-bearing surface 71 and a second contact surface 73 are disposed on one side of the toggle member 7 facing the rotor blocks 2, one end of the rotor block 2 facing the toggle member is a working surface 23 with the rotor shaft 21 as a boundary, the other end of the rotor block is a rotor force-bearing surface 22, a groove 72 for preventing the toggle member from interfering with the rotor shaft 21 is disposed on one side of the toggle member facing the rotor blocks 2 between the toggle member force-bearing surface 71 and the second contact surface 73, during the unfolding process, the toggle member 7 pushes the working surface 23 of the rotor block 2 through the second contact surface 73 to push the working surface of the rotor block 2 out of the center drill bit, during the furling process, the toggle piece 7 pushes the toggle piece stress surface 71 of the rotor block 2 through the toggle piece stress surface 71, so that the rotor block 2 is pushed back and furled in the installation area 8 of the central drill again.
The axial limiting in the embodiment adopts the following mode, the outer side surface of the tail end of the central drill bit 3 is provided with an annular limiting groove 33 along the circumferential direction, the rotor stabilizer is provided with an inner hole and a pin hole corresponding to the position of the annular limiting groove 33, the tail end of the central drill bit 3 is arranged in the inner hole and axially limits the central drill bit 3 and the rotor stabilizer through a transverse pin 4 and a split pin 5 which are inserted in the pin hole and the annular limiting groove 33, a steel ball 6 is arranged between the annular limiting groove 33 and the inner hole of the rotor stabilizer to form ball connection, so that the central drill bit 3 and the rotor stabilizer 1 can stably rotate around a rotation center, the friction force is small, the circumferential limiting device comprises a plurality of spline grooves 12 arranged on the inner wall of the inner hole of the rotor stabilizer and a spline 31 arranged at the tail end of the central drill bit 3, the spline grooves 12 are larger than the spline 31, and the spline 31 forms a gap with the spline grooves 12, therefore, the rotation angle of the central drill bit 3 around the rotation center is limited, the rotation angle of the central drill bit 3 is just the rotation angle of the stirring piece 7, and the stirring piece 7 is guaranteed to just unfold or fold the rotor block 2.
The specific working process is as follows:
as shown in fig. 7(a), an arrow in the figure indicates a rotation direction of the rotor stabilizer 1, first, the rotor block is in a folded state, when the rotor block is in the folded state, the working surface 23 of the rotor block 2 is contracted in the axial projection of the center drill 3, at this time, one side of the spline 31 and the spline groove 12 is in contact with the inner wall of the spline groove for limiting, and the other side is in contact with the spline groove for providing a gap, as shown in fig. 7(b), when the rotor stabilizer 1 starts to rotate, a relative rotation is first performed between the rotor block 1 and the center drill 3 to drive the toggle member 7 to initially rotate by an angle, the second contact surface 73 of the toggle member pushes the first contact surface 24 of the rotor block 2, as shown in fig. 7(c), the working surface 23 of the rotor block 2 is pushed out of the mounting area 8 until the toggle member 7 rotates to a final state, at this time, the working surface 23 of the rotor block 2 completely extends out of the side wall of the center drill, so that the working surface 23 is outside the mounting area 8, and the rotor wing stress surface 22 of the rotor wing block 2 is supported on the poking part stress surface 71 on the poking part in a surface contact mode, when the drilling tool finishes working, the drilling tool is reversed as shown in fig. 7(d), relative rotation is carried out between the rotor wing stabilizer and the central drill bit again, the poking part stress surface 71 serves as a pushing part to push the rotor wing stress surface 22 of the rotor wing block 2 to rotate, as shown in fig. 7(e), the rotor wing block 2 rotates around the rotor wing shaft 21 under the pushing action of the poking part 7, the rotor wing block 2 is folded, and as shown in fig. 7(f), the rotor wing block finally returns to the initial position through the frictional resistance of a rock stratum. This device difference and current traditional rotor drilling tool, it is rotatory to drive the rotor piece through stirring, thereby guaranteed that all rotor pieces can open in step, guarantee that the drilling tool is meetting complicated operating mode and different worker methods operation, rotor or slider can not be because of the inefficacy that unable normal back-out leads to, the sticking of drill phenomenon of drilling tool during operation under complicated terrane has also been solved, in the course of the work, when the rotor piece is opened to final condition, rotor piece 2 is through rotor atress face and the stirring atress face contact of stirring piece, through the contact of face with the face, the impact force that the rotor piece will creep into the in-process shifts to stirring on through the form of face, prevent that point contact or line contact from causing great impact, cause the destruction of stirring piece, can prolong the life-span of whole device.
Example 2:
as shown in fig. 8, 9, 10 and 11, the present embodiment is different from embodiment 1 in that the toggle member 7 and the rotor stabilizer 1 are integrally formed, and the central drill is provided with a shaft hole 9 for installing the rotor block, that is, as long as the toggle member 7 and the rotor block 2 can generate relative motion, the toggle member can push the rotor block open, in the present embodiment, the operation principle is similar to embodiment 1, and the difference is that, because the toggle member 7 is linked with the rotor stabilizer 1, the rotor shaft arrangement direction of the rotor block 2 is opposite to that of embodiment 1, so that the working end of the rotor block 2 is adjusted to the outer side of the rotor block, as shown in fig. 12(a) and 12(b), in the process of unfolding the rotor block, the toggle member force bearing surface 71 of the toggle member pushes the rotor force bearing surface 22 of the rotor block 2, and pushes the working surface of the rotor block 2 out of the installation area 8, as shown in fig. 12(c), when the toggle member 7 rotates to the final state, the working surface of the rotor block 2 is outside the installation area 8, the rotor force-bearing surface 22 of the rotor block 2 is supported on the toggle member force-bearing surface 71 of the toggle member in a surface contact manner, as shown in fig. 12(d) and 12(e), when the toggle member is in the closed state, the second contact surface 73 of the toggle member 7 pushes the first contact surface 24 of the rotor block 2, as shown in fig. 12(f), and the rotor block 2 finally returns to the initial position by the frictional resistance of the rock strata, so the force-bearing point and the force-bearing manner of the rotor block 2 in embodiment 2 are different from those in embodiment 1.
Example 3:
as shown in fig. 13, 14, 15, 16, 17(a), 17(b), this embodiment is different from embodiment 1 in that the shape of the toggle member 7 is different from that of embodiments 1, 2, so the shape of the formed installation area is changed, meanwhile, one side of the rotor block 2 is provided with the rotor shaft 21, the other side is provided with the guide post 25, the central drill 3 is provided with the guide slot 10 matching with the guide post 25, the rotor stabilizer 1 is provided with the shaft hole 9 matching with the rotor shaft 21, one side of the rotor block 2 is installed in the shaft hole 9 through the guide post 25, the other side is installed in the guide slot 10 through the guide post 25, during the furling process, the toggle member 7 drives the central drill 3 to rotate, so that the guide slot 10 also rotates, at this time, the toggle member 7 and the guide slot 10 respectively provide thrust to the rotor block 2 and the guide post 25 of the rotor block 2, and drive the rotor block 2 to furl, therefore, the guide posts 25 and the guide grooves 10 can assist the furling of the rotor block 2 on one hand and ensure the stability of the rotor block 2 after being unfolded on the other hand, the unfolding process of the embodiment 3 is the same as that of the embodiment 1, and the description is not repeated here.
In the above embodiment, the rotor block 2 and the toggle member 7 cannot be installed on the center drill 3 or the rotor stabilizer 1 at the same time, but must be installed separately, so that the toggle member 7 can push the rotor block 2 to rotate.
The above description is only illustrative of the specific embodiments of the present invention, and the scope of the present invention is not limited thereto. All equivalent changes and modifications made according to the claims and the content of the specification of the present invention are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a reaming formula rotor drilling tool, includes rotor stabilizer (1), central drill bit (3) and rotor piece, central drill bit (3) coaxial arrangement is on rotor stabilizer (1), its characterized in that: the central drill bit (3) and the rotor wing rod stabilizer (1) can rotate relatively by taking a rotation center as a rotating shaft, the central drill bit (3) and the rotor wing rod stabilizer (1) limit the relative rotation angle of the central drill bit (3) and the rotor wing rod stabilizer (1) through a circumferential limiting device, an installation gap for installing a rotor wing block (2) is arranged between opposite surfaces of the central drill bit (3) and the rotor wing rod stabilizer (1), the rotor wing block (2) is installed on the opposite surfaces of the central drill bit (3) or the rotor wing rod stabilizer (1) through a rotor wing shaft, the rotor wing block (2) is limited in the installation gap through the axial limiting of the central drill bit (3) and the rotor wing rod stabilizer (1), and a stirring piece (7) linked with the central drill bit (3) or the rotor wing rod stabilizer (1) is arranged in the middle of the installation gap;
the poking piece is arranged in the installation gap and divides the installation gap into a plurality of installation areas (8) corresponding to the number of the rotor wing blocks (2), the rotor wing blocks (2) are installed in the installation areas (8) in a central symmetry mode by taking a rotation center as a symmetry axis, the poking piece (7) is fixed on the central drill bit (3), the rotor wing blocks (2) are rotatably installed on the rotor wing rod stabilizer (1) through the rotor wing shafts (21), a poking piece stress surface (71) and a second contact surface (73) are arranged on one side, facing the rotor wing blocks (2), of the rotor wing blocks (2), one end, facing the poking piece, of the rotor wing shafts (21) is a boundary line, the first contact surface (24) is arranged at one end, a rotor wing stress surface (22) is arranged at the other end, and the side, facing the rock stratum, of the rotor wing blocks (2) in the unfolding state is a working surface (23) for shearing;
in the initial state, the working surface (23) of the rotor block (2) is contracted in the axial projection of the central drill bit (3), in the unfolded state, the rotor stabilizer (1) and the central drill bit (3) rotate relatively, the rotor block (2) is pushed to unfold through the toggle piece (7), the rotor block (2) is in surface contact with the toggle piece stress surface (71) of the toggle piece (7) through the rotor stress surface (22), the impact force in the drilling process is transferred to the toggle piece (7) through the surface form through the surface contact between the surfaces, and in the folded state, the rotor block (2) is pushed to fold through the toggle piece (7).
2. The reamer rotary drill of claim 1, wherein: a groove (72) for preventing the stirring piece from interfering with the rotor shaft (21) is arranged between the stirring piece force bearing surface (71) and the second contact surface (73) on one side of the stirring piece facing the rotor block (2).
3. The reamer rotary drill of claim 1, wherein: the poking pieces are triangular poking plates, and the number of the rotor blocks (2) is three.
4. The reamer rotary drill of claim 1, wherein: the tail end lateral surface of center drill bit (3) is equipped with annular spacing groove (33) along circumference, be equipped with hole (11) on rotor stabilizer (1) and the pinhole that corresponds with annular spacing groove (33) position, the tail end of center drill bit (3) is installed in hole (11) and through horizontal round pin (4) and split pin (5) of cartridge in pinhole and annular spacing groove (33) with center drill bit (3) and rotor stabilizer (1) axial spacing, form ball connection with installation steel ball (6) between rotor stabilizer (1) hole (11) inner wall in annular spacing groove (33).
5. The reamer rotary drill of claim 1, wherein: the circumference stop device is including setting up a plurality of spline grooves (12) on rotor stabilizer (1) hole (11) inner wall and setting up spline (31) at center drill bit (3) tail end, spline groove (12) are greater than spline (31).
6. The reamer rotary drill of claim 1, wherein: the stirring piece (7) and the central drill bit (3) or the rotor wing rod stabilizer (1) are integrally formed.
7. The reamer rotary drill of claim 1, wherein: one side of rotor piece (2) is equipped with rotor shaft (21), the opposite side is equipped with the guide post, be equipped with respectively on central drill bit (3) and the rotor stabilizer (1) with rotor shaft (21) the shaft hole (9) that match and with guide post assorted guide way (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914465.3A CN111911078B (en) | 2020-09-03 | 2020-09-03 | Reaming type rotary wing drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914465.3A CN111911078B (en) | 2020-09-03 | 2020-09-03 | Reaming type rotary wing drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111911078A CN111911078A (en) | 2020-11-10 |
| CN111911078B true CN111911078B (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010914465.3A Active CN111911078B (en) | 2020-09-03 | 2020-09-03 | Reaming type rotary wing drilling tool |
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| CN (1) | CN111911078B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4198253B1 (en) * | 2021-12-15 | 2024-04-17 | BAUER Maschinen GmbH | Drilling tool and method for creating a hole in the soil |
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| KR102002840B1 (en) * | 2019-03-19 | 2019-07-24 | 광성지엠(주) | Drilling bit |
| CN110439468A (en) * | 2019-09-05 | 2019-11-12 | 武穴市金锐精密锻造有限公司 | A kind of spin-block formula down-the-hole is with pipe bit |
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2020
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| CN1180129A (en) * | 1996-09-04 | 1998-04-29 | 布洛克英国有限公司 | Drill means |
| CN2685530Y (en) * | 2004-03-09 | 2005-03-16 | 伍利钱 | Drill bits for enlarging the borehole |
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| KR20130057161A (en) * | 2011-11-23 | 2013-05-31 | (주)삼일이엔씨 | Drilled hole enlargeable drill that scalable enlargement is possible in each drilling step |
| CN208792944U (en) * | 2018-09-21 | 2019-04-26 | 吉林大学 | Lateral telescopic casing drilling tool |
| KR102002840B1 (en) * | 2019-03-19 | 2019-07-24 | 광성지엠(주) | Drilling bit |
| CN110439468A (en) * | 2019-09-05 | 2019-11-12 | 武穴市金锐精密锻造有限公司 | A kind of spin-block formula down-the-hole is with pipe bit |
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