CN113846972A - Hole expanding device and hole expanding method - Google Patents
Hole expanding device and hole expanding method Download PDFInfo
- Publication number
- CN113846972A CN113846972A CN202111244787.2A CN202111244787A CN113846972A CN 113846972 A CN113846972 A CN 113846972A CN 202111244787 A CN202111244787 A CN 202111244787A CN 113846972 A CN113846972 A CN 113846972A
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- China
- Prior art keywords
- drill
- cylinder
- bit
- reaming
- hole
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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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
- E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
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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
- E21B10/322—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 cutter shifted by fluid pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a reaming device and a reaming method, which comprise an outer drill cylinder, an inner drill cylinder, a drill feeding cylinder, a first drill bit and a reaming drill bit component; the outer drill cylinder is coaxially and rotatably arranged in the drill feeding cylinder, and at least part of the drilling end of the outer drill cylinder is positioned on the outer side of the drill feeding cylinder; the first drill bit is arranged on the drilling end and is coaxial with the drilling end; the inner drill cylinder is coaxially and rotatably connected in the outer drill cylinder, a drill cylinder movable part is arranged on the inner drill cylinder, and at least part of the drill cylinder movable part is positioned in the first drill bit; the first drill bit is provided with a containing hole, the expanding drill bit part is connected in the containing hole in a sliding mode, and the movable part of the drill cylinder is connected with the expanding drill bit part through the driving part so as to drive the expanding drill bit part to extend out of the containing hole. After the first drill bit of the reaming device drills, the reaming drill bit part can extend out by rotating the inner drill cylinder, and reaming operation is carried out. The reaming device can drill holes and ream holes, and is convenient for workers to operate. The reaming method using the reaming device improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of hole expanding, in particular to a hole expanding device and a hole expanding method.
Background
The gob-side entry driving is that after the stoping of the working face of the upper section is stable, the entry is driven along the edge of the goaf or a narrow coal pillar, so that the entry is arranged in a low-stress field at one side close to the coal pillar, the entry is convenient to maintain, and the deformation is reduced. Because the roadway top plate is mainly supported by the narrow coal pillars, the width of the coal pillars needs to be controlled in the process, and the supporting capacity of the narrow coal pillars is enhanced; based on the method, a space for anchoring an expansion lock head of an expansion lock type anchor cable can be drilled at a certain depth of the coal pillar by utilizing drilling and hole expanding equipment, so that the expansion lock type anchor cable is utilized to realize bidirectional reinforcement of single-side construction of the coal pillar.
The existing reaming operation needs to firstly drill holes by using drilling equipment and then ream holes by using reaming equipment. Therefore, the operation efficiency is low, and the operation is inconvenient for workers.
Based on the above technical problems, improvements thereof are required.
Disclosure of Invention
The technical scheme of the invention aims to provide a reaming device and a reaming method which are convenient to operate and improve the working efficiency.
The reaming device provided by the technical scheme of the invention comprises an outer drill cylinder, an inner drill cylinder, a drill feeding cylinder, a first drill bit and a reaming drill bit component; the outer drill cylinder is coaxially and rotatably arranged in the drill feeding cylinder, and at least part of the drilling end of the outer drill cylinder is positioned outside the drill feeding cylinder; the first drill bit is arranged on the drilling end and is coaxial with the drilling end; the inner drill cylinder is coaxially and rotatably connected in the outer drill cylinder, a drill cylinder movable part is arranged on the inner drill cylinder, and at least part of the drill cylinder movable part is positioned in the first drill bit; the reamer comprises a first drill bit and a reamer bit, and is characterized in that a containing hole is formed in the first drill bit, the reamer bit is slidably connected in the containing hole, and a drill cylinder movable part is connected with the reamer bit through a driving part to drive the reamer bit to stretch out of the containing hole.
Furthermore, a hinge seat and a telescopic piece are arranged in the outer drill cylinder, and the inner drill cylinder is hinged on the hinge seat; the telescopic piece is located on one side, far away from the drill cylinder moving part, of the hinge seat, and the telescopic piece is hinged between the outer drill cylinder and the inner drill cylinder.
Further, the distance between the telescopic piece and the hinge seat is larger than the distance between the drill barrel movable part and the hinge seat.
Furthermore, the end part of the movable part of the drill cylinder is positioned outside the first drill bit, and the end part of the movable part of the drill cylinder is connected with a second drill bit.
Further, a liquid discharge hole is formed in the second drill.
Further, the reamer head piece comprises a reamer head, a mounting seat and a pushing mechanism; the mounting seat is mounted in the accommodating hole, the expanding bit is connected to the mounting seat in a sliding mode, and the output end of the pushing mechanism is connected with the expanding bit; the driving piece is connected with the pushing mechanism to drive the pushing mechanism to push the reamer bit to slide.
Further, pushing mechanism includes the hydro-cylinder, the driving piece includes oil storage bag and defeated oil pipe, defeated oil pipe is connected the hydro-cylinder with between the oil storage bag, bore a section of thick bamboo movable part with the oil storage bag is connected.
Furthermore, an expansion bag and a fracturing valve are arranged on the drill delivery cylinder, and the fracturing valve supplies liquid through a liquid injection pipe; the expansion bag supplies liquid through an expansion liquid pipe so as to control the expansion and contraction of the expansion bag.
Furthermore, the drill conveying cylinder is provided with an adjusting assembly, the adjusting assembly comprises a mounting ring and an adjusting rod, the mounting ring is connected to the drill conveying cylinder, and the adjusting rod is connected to the mounting ring so as to adjust the position of the drill conveying cylinder.
The reaming method provided by the technical scheme of the invention comprises the step of reaming by adopting any one reaming device, the steps are as follows,
s01, the drill sending cylinder stretches the first drill into the area to be reamed;
s02, operating the inner drill cylinder to rotate, wherein the inner drill cylinder drives the expanding bit of the expanding bit component to extend out of the accommodating hole through the driving component;
s03: starting the hole expanding drill bit, and performing hole expanding operation on the hole expanding drill bit;
s04: and closing the expanding bit, and driving the expanding bit to retreat into the accommodating hole by the driving piece.
Furthermore, the first drill also comprises a second drill after extending into the area to be reamed,
s011: operating the expansion liquid pipe to control the expansion of the expansion bag, and sealing the area to be reamed by the expansion bag;
s012: operating fracturing valve to-be-reamed area injection fracturing。
By adopting the technical scheme, the method has the following beneficial effects:
the technical scheme of the invention provides a reaming device and a reaming method. The outer drill cylinder is coaxially and rotatably arranged in the drill sending cylinder, and at least part of the drilling end of the outer drill cylinder is positioned outside the drill sending cylinder. The first drill bit is disposed on and coaxial with the drilling end. The inner drill cylinder is coaxially and rotatably connected in the outer drill cylinder, a drill cylinder movable part is arranged on the inner drill cylinder, and at least part of the drill cylinder movable part is positioned in the first drill bit. The first drill bit is provided with a containing hole, the expanding drill bit part is connected in the containing hole in a sliding mode, and the movable part of the drill cylinder is connected with the expanding drill bit part through the driving part so as to drive the expanding drill bit part to extend out of the containing hole. After the first drill bit of the reaming device drills, the reaming drill bit part can extend out by rotating the inner drill cylinder, and reaming operation is carried out. The reaming device can drill holes and ream holes, and is convenient for workers to operate. The reaming method using the reaming device improves the working efficiency.
Drawings
FIG. 1 is a schematic view of a reaming device according to an embodiment of the invention;
FIG. 2 is a partial schematic view of a reaming device according to an embodiment of the invention;
fig. 3 is a schematic view of a first drill bit and reamer head piece in an embodiment of the invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1-3, a reaming device 10 according to an embodiment of the present invention includes an outer drill cylinder 1, an inner drill cylinder 2, a drill feed cylinder 3, a first drill bit 4, and a reamer bit member 5.
The outer drill barrel 1 is coaxially and rotatably arranged inside the feed barrel 3, and at least part of the drilling end 11 of the outer drill barrel 1 is located outside the feed barrel 3.
The first drill bit 4 is arranged on the drilling end 11 and is arranged coaxially with the drilling end 11.
The inner drill cylinder 2 is coaxially and rotatably connected in the outer drill cylinder 1, a drill cylinder movable part 21 is arranged on the inner drill cylinder 2, and at least part of the drill cylinder movable part 21 is positioned in the first drill bit 4.
The first drilling head 4 is provided with a receiving hole 41, the reamer head 5 is slidably connected in the receiving hole 41, and the drill bit movable part 21 is connected with the reamer head 5 through the driving part 6 to drive the reamer head 5 to extend out of the receiving hole 41.
Specifically, the reaming device 10 is used to enlarge the size of a borehole, particularly a coal pillar. The reaming device 10 is comprised of a drill barrel component and a drill bit component. Wherein, the drill cylinder part comprises an outer drill cylinder 1, an inner drill cylinder 2 and a drill feeding cylinder 3. The drill bit member comprises a first drill bit 4 and a reamer bit member 5. The outer drill cylinder 1, the inner drill cylinder 2 and the drill feeding cylinder 3 are all hollow cylinders. The outer drill cylinder 1 is positioned in the drill delivery cylinder 3, the inner drill cylinder 2 is positioned in the outer drill cylinder 1, and the drill delivery cylinder 3, the outer drill cylinder 1 and the inner drill cylinder 2 are coaxial. The outer drill 1 is in clearance fit with the bit feed cylinder 3 so as to be rotatable about the axis in the bit feed cylinder 3. The inner drill cylinder 2 is in clearance fit with the outer drill cylinder 1, and the inner drill cylinder 2 can swing left and right in the outer drill cylinder 1 by taking one point on the inner drill cylinder 2 as a center.
One end of the outer drill barrel 1 is a drilling end 11, and the first drill bit 4 is connected to the drilling end 11. The center of the swing of the inner drill cylinder 2 divides the atmosphere of the inner drill cylinder 2 into two parts, wherein the part close to the first drill bit 4 is a drill cylinder movable part 21. The movable drill-barrel part 21 extends outside the drilling end 11 and into the first drill bit 4.
A receiving hole 41 is provided on the side wall of the first drill 4, and the reamer head 5 is slidably connected in the receiving hole 41, which may be implemented by providing a slide rail or a sliding groove, so that a portion of the reamer head 5 can protrude outside the receiving hole 41. The first drill 4 is provided with a first cavity 42 communicating with the receiving hole 41, and the drill barrel movable portion 21 is partially located in the first cavity 42. A driving member 6 is connected between the drill cylinder movable portion 21 and the reamer head member 5, and the driving member 6 is used for driving the reamer head member 5 to slide.
When the hole expanding device 10 is used, the outer drill barrel 1 rotates to drive the first drill bit 4 to rotate, and the first drill bit 4 drills a hole on the wall surface. Then, when the reaming bit piece 5 is located in the drilling hole, the inner drill cylinder 2 is controlled to swing while drilling, the inner drill cylinder 2 swings to swing the drill cylinder movable part 21 towards the direction close to the driving part 6, the drill cylinder movable part 21 drives the driving part 6, the driving part 6 drives the reaming bit piece 5 to slide, and the reaming bit 51 of the reaming bit piece 5 extends out of the accommodating hole 41. At this time, when the first drill 4 is rotated, the reamer 51 also starts the operation to enlarge the size of the drilled hole. The reaming device 10 arranged in this way can drill holes and can perform reaming operation at the same time of drilling. The operation of staff is convenient.
Alternatively, the driving member 6 comprises a driving seat fixed in the first cavity 42 and a driving rod slidably connected to the driving seat. One end of the driving rod is hinged with the drill cylinder movable part 21, and the other end is hinged with the expanding drill bit piece 5. The drill cylinder moving part 21 moves to drive the driving rod to slide, and the driving rod drives the expanding bit piece 5 to slide. Of course, the driving member 6 may have other structures as long as it can drive the reamer head member 5 to slide.
In one embodiment, as shown in fig. 1-2, a hinge seat 12 and a telescopic member 13 are arranged in the outer drill cylinder 1, and the inner drill cylinder 2 is hinged on the hinge seat 12. The telescopic piece 13 is positioned on one side of the hinge seat 12 far away from the drill barrel movable part 21, and the telescopic piece 13 is hinged between the outer drill barrel 1 and the inner drill barrel 2.
Specifically, the outer drill barrel 1 has an outer drill barrel through hole in which the hinge seat 12 and the telescopic member 13 are located. Wherein the hinge seat 12 is closer to the first drilling head 4 than the telescopic member 13. The inner drill cylinder 2 is hinged on the hinge base 12, one end of the telescopic piece 13 is hinged on the inner drill cylinder 2, and the other end is hinged on the hinge base 12. The telescopic piece 13 can be telescopic, and the inner drill cylinder 2 can be controlled to rotate by taking the hinge base 12 as a center through the telescopic piece, so that the movable part 21 of the drill cylinder can swing. So set up, conveniently control the activity of interior drill barrel 2.
Optionally, a bracket is sleeved on the outer drill barrel 1, and the hinge seat 12 is connected to the bracket, so that the installation is convenient. It should be noted that the hinge base 12 and the bracket are not articulated in a universal manner.
Optionally, the telescopic part 13 is a telescopic cylinder or a telescopic oil cylinder, so that the inner drill barrel 2 can be automatically and smoothly pushed to swing. The telescopic piece 13 comprises a cylinder body and a telescopic slide rod, and the telescopic slide rod is connected with the cylinder body in a sliding manner.
In one embodiment, as shown in fig. 1-2, the distance between the telescopic member 13 and the hinge base 12 is greater than the distance between the drill barrel movable portion 21 and the hinge base 12.
Specifically, the hinge base 12 is located between the telescopic member 13 and the drill barrel movable portion 21, and the distance between the telescopic member 13 and the hinge base 12 is greater than the distance between the drill barrel movable portion 21 and the telescopic member 13. The first acting force applied by the telescopic part 13 on the inner drill cylinder 2 to push the inner drill cylinder 2 is transferred to the drill cylinder movable part 21 to be converted into the second acting force of the drill cylinder movable part 21 to drive the driving part 6. According to the lever principle, the second force is amplified because the distance between the telescopic member 13 and the hinge seat 12 is greater than the distance between the drill barrel movable part 21 and the telescopic member 13. In this way, the telescopic member 13 obtains a larger second force by providing a smaller first force.
In one embodiment, as shown in fig. 1-2, the end of the drill cylinder movable part 21 is located outside the first drill 4, and the end of the drill cylinder movable part 21 is connected with the second drill 7.
In particular, the drilling member further comprises a second drilling head 7. The end part of the drill cylinder movable part 21 passes through the first cavity 42 and extends out of the outer side of the first drill bit 4, and the second drill bit 7 is sleeved on the end part of the drill cylinder movable part 21 and is arranged coaxially with the first drill bit 4. The diameter of the second drill bit 7 is smaller than the diameter of the first drill bit 4, the second drill bit 7 being used for rapid drilling. When the hole is opened, the outer drill cylinder 1 drives the inner drill cylinder 2 to rotate, and the inner drill cylinder 2 drives the second drill bit 7 to rotate. After the hole is made, the first drill bit 4 is drilled in its entirety for feeding into the reamer head piece 5.
Alternatively, the first drill 4 and the second drill 7 are both trapezoidal in cross-section, so as to allow quick drilling.
Optionally, a partition is arranged between the first drill 4 and the second drill 7, and the partition is connected to the first drill 4 and spaced apart from the second drill 7. So arranged, the second drill bit 7 is prevented from contacting the first drill bit 4.
In one embodiment, as shown in fig. 1-2, the second drill 7 is provided with a drainage hole 71.
Specifically, a second cavity 72 is arranged in the second drill 7, a drain hole 71 is arranged on the second drill 7, and the drain hole 71 is communicated with the second cavity 72. When the second drill 7 performs the opening operation, the drain hole 71 discharges the liquid, and the temperature of the second drill 7 is lowered, whereby the impurities generated during drilling can be discharged.
Optionally, a liquid discharging device is disposed in the second cavity 72, the liquid discharging device has a liquid storage tank, a pump and a liquid outlet pipe, the pump is connected between the liquid storage tank and the liquid storage pipe, and the liquid outlet pipe is communicated with the liquid discharging hole 71.
In one embodiment, as shown in fig. 2-3, reamer head piece 5 includes reamer head 51, mount 52, and pushing mechanism 53. The mounting seat 52 is mounted in the receiving hole 41, the reamer head 51 is slidably coupled to the mounting seat 52, and the output end of the pushing mechanism 53 is coupled to the reamer head 51. The driving member 6 is connected to the pushing mechanism 53 to drive the pushing mechanism 53 to push the reamer head 51 to slide.
Specifically, the reamer head member 5 is composed of a reamer head 51, a mount 52, and a pushing mechanism 53. The mounting seat 52 is fixedly installed in the receiving hole 41, and the reamer head 51 is slidably connected to the mounting seat 52, which may be implemented by providing a sliding rail or a sliding groove on the mounting seat 52. The pushing mechanism 53 has a trigger part connected to the driving member 6 and a pushing part connected to the reamer bit 51. When the driving member 6 triggers the trigger portion, the pushing portion pushes the reamer head 51 to slide.
Optionally, a sliding block 54 is disposed on the mounting seat 52, the sliding block 54 is slidably connected with a sliding rail or a sliding groove on the mounting seat 52, and the reamer bit 51 is mounted on the sliding block 54. This facilitates installation of the reamer bit 51.
Alternatively, the pushing mechanism 53 is a push rod and a connecting frame, the connecting frame is connected to the mounting seat 52, and the push rod is hinged to the connecting frame. One end of the push rod is connected with the driving member 6, and the other end is connected with the reamer bit 51. The driving member 6 drives the push rod to rotate, and the push rod drives the expanding bit 51 to slide.
In one embodiment, as shown in fig. 2-3, the pushing mechanism 53 comprises a cylinder member, the driving member 6 comprises an oil reservoir 61 and an oil pipe 62, the oil pipe 62 is connected between the cylinder member and the oil reservoir 61, and the drill barrel movable portion 21 is connected with the oil reservoir 61.
Specifically, the oil storage bag 61 is an annular bag, and the oil storage bag 61 is positioned in the first cavity 42 and is sleeved on the drill barrel movable part 21. One end of the oil delivery pipe 62 is connected to the oil storage bag 61, and the other end is connected to the cylinder member. When the drill cylinder movable part 21 swings, the drill cylinder movable part 21 presses the oil storage bag 61, oil in the oil storage bag 61 is conveyed into the oil cylinder part through the oil conveying pipe 62, and the oil cylinder part extends to push the reaming bit 51.
Optionally, the ram member includes a first link 531, a second link 532, and an input ram 533. The first link 531 is hinged to the mounting seat 52, and the second link 532 is hinged between the reamer head 51 and the first link 531. The input cylinder 533 includes a cylinder and a piston rod, the oil pipe 62 is connected to the cylinder, one end of the piston rod is slidably connected to the cylinder, and the other end is hinged to the hinged position of the first link 531 and the second link 532.
In one embodiment, as shown in fig. 1-2, the bit feeding cylinder 3 is provided with an expansion bladder 31 and a fracturing valve 32, and the fracturing valve 32 is supplied with liquid through a liquid injection pipe 33. The expansion capsule 31 is supplied with liquid through an expansion liquid pipe 34 to control the expansion and contraction of the expansion capsule 31.
In particular, the expansion bladder 31 is an annular bladder that fits around the outside of the drill feed barrel 3, the expansion bladder 31 being capable of expanding and contracting. The fracturing valve 32 is used for fracturing operation, and can extrude the hole wall of the drilled hole to generate cracks, so that the reaming operation of the reaming bit 51 is facilitated. The frac valve 32 is conventional and the specific structure is not described in detail. An expansion liquid pipe 34 and a liquid injection pipe 33 are arranged in the drill sending barrel 3. The inflation tube 34 is connected to the inflation bladder 31, and the inflation and deflation of the inflation bladder 31 can be controlled by injecting and withdrawing liquid through the inflation tube 34. The injection pipe 33 is connected with the fracturing valve 32.
Before the reaming operation is carried out by using the reaming bit 51, the expansion bag 31 is controlled by the expansion liquid pipe 34 to expand so as to seal the area needing to be reamed, and then the fracturing valve 32 fractures the area so as to generate cracks in the hole wall, thereby facilitating the reaming operation of the reaming bit 51.
In one embodiment, as shown in FIGS. 1-2, the feed barrel 3 is provided with an adjustment assembly 8, the adjustment assembly 8 including a mounting ring 81 and an adjustment rod, the mounting ring 81 being attached to the feed barrel 3 and the adjustment rod being attached to the mounting ring 81 to adjust the position of the feed barrel 3.
Specifically, the mounting ring 81 is sleeved on the drill sending barrel 3, the adjusting rod comprises two supporting rods 82 and two telescopic rods 83, the two supporting rods 82 are symmetrically arranged, and the two telescopic rods 83 are also symmetrically arranged. The two support rods 82 are connected to two telescopic rods 83, respectively. Two supporting plates 84 are arranged on the drilling feeding barrel 3, the supporting rods 82 are hinged on the corresponding supporting plates 84, one end of each telescopic rod 83 is hinged on the mounting ring 81, the other end of each telescopic rod is hinged with one end of each supporting rod 82, and the other end of each supporting rod 82 is a supporting end.
During drilling, the supporting end of the supporting rod 82 contacts with the wall of the hole, and the position of the drill conveying barrel 3 is controlled by the extension and contraction of the two telescopic rods 83.
The reaming method provided by the technical scheme of the invention comprises the step of reaming by adopting any one reaming device 10, and the steps are as follows.
S01, the feed barrel 3 extends the first bur head 4 into the area to be reamed.
S02, the inner drill barrel 2 is rotated, and the inner drill barrel 2 drives the reamer bit 51 of the reamer bit piece 5 out of the receiving hole 41 through the driving member 6.
S03: the reamer bit 51 is activated and the reamer bit 51 performs a reaming operation.
S04: the reamer head 51 is closed and the drive member 6 drives the reamer head 51 back into the receiving bore 41.
For the detailed structure and function of the reaming device 10, reference is made to the related description in the foregoing, and the detailed description is omitted here.
As shown in fig. 1-3, the reaming process using the reaming device 10 is specifically as follows, the outer drill cylinder 1 rotates to drive the first drill bit 4 and the inner drill cylinder 2 to rotate, and the inner drill cylinder 2 drives the second drill bit 7 to rotate. During drilling, the second drill bit 7 first perforates the area to be drilled and then gradually drills into the area to be drilled. Then the first drill 4 drills a hole, and the size of the drilled hole is enlarged preliminarily. After the reamer head 51 is positioned in the borehole, the inner drill barrel 2 is operated to rotate, and the drill barrel movable portion 21 is swung. The driving member 6 then drives the reamer bit 51 to slide so that the reamer bit 51 extends out of the receiving hole 41. The first drill bit 4 then rotates the reamer bit 51 to further enlarge the size of the borehole. After reaming, the inner drill barrel 2 is operated to rotate in the reverse direction, and the driving member 6 drives the reaming bit 51 to reset. The reaming method using the reaming device 10 can perform reaming while drilling, and improves the operation efficiency.
In one embodiment, as shown in fig. 1 to 3, after the first drill 4 extends into the region to be reamed, the method further includes, S011: the inflation fluid line 34 is operated to control the inflation bladder 31 to inflate and the inflation bladder 31 seals the area to be reamed. S012: the frac valve 32 is operated to fracture the area to be reamed.
Specifically, the expansion bladder 31 is operated to expand and seal the borehole prior to reaming with the reamer head 51. The frac valve 32 is then operated to fracture the area requiring reaming. This makes it easier for the reamer bit 51 to enlarge the borehole.
In summary, the invention discloses a reaming device 10 and a reaming method, which comprises an outer drill cylinder 1, an inner drill cylinder 2, a first drill bit 4, a drill feeding cylinder 3 and a reaming bit piece 5. The outer drill barrel 1 is coaxially and rotatably arranged inside the feed barrel 3, and at least part of the drilling end 11 of the outer drill barrel 1 is located outside the feed barrel 3. The first drill bit 4 is arranged on the drilling end 11 and is arranged coaxially with the drilling end 11. The inner drill cylinder 2 is coaxially and rotatably connected in the outer drill cylinder 1, a drill cylinder movable part 21 is arranged on the inner drill cylinder 2, and at least part of the drill cylinder movable part 21 is positioned in the first drill bit 4. The first drilling head 4 is provided with a receiving hole 41, the reamer head 5 is slidably connected in the receiving hole 41, and the drill bit movable part 21 is connected with the reamer head 5 through the driving part 6 to drive the reamer head 5 to extend out of the receiving hole 41. After the first drill bit 4 of the reaming device 10 drills a hole, the reaming bit piece 5 can be extended by rotating the inner drill barrel 2 to perform reaming operation. The reaming device 10 can drill holes and ream holes, and is convenient for workers to operate. The reaming method using the reaming device 10 improves the working efficiency.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (11)
1. A reaming device is characterized by comprising an outer drill cylinder, an inner drill cylinder, a drill feeding cylinder, a first drill bit and a reaming bit component;
the outer drill cylinder is coaxially and rotatably arranged in the drill feeding cylinder, and at least part of the drilling end of the outer drill cylinder is positioned outside the drill feeding cylinder;
the first drill bit is arranged on the drilling end and is coaxial with the drilling end;
the inner drill cylinder is coaxially and rotatably connected in the outer drill cylinder, a drill cylinder movable part is arranged on the inner drill cylinder, and at least part of the drill cylinder movable part is positioned in the first drill bit;
the reamer comprises a first drill bit and a reamer bit, and is characterized in that a containing hole is formed in the first drill bit, the reamer bit is slidably connected in the containing hole, and a drill cylinder movable part is connected with the reamer bit through a driving part to drive the reamer bit to stretch out of the containing hole.
2. The reaming device of claim 1, wherein the outer drill cylinder is provided with a hinge seat and a telescopic member therein, and the inner drill cylinder is hinged to the hinge seat;
the telescopic piece is located on one side, far away from the drill cylinder moving part, of the hinge seat, and the telescopic piece is hinged between the outer drill cylinder and the inner drill cylinder.
3. The reaming device of claim 2 wherein the distance between said telescoping member and said articulated seat is greater than the distance between said movable portion of the drill-barrel and said articulated seat.
4. The reaming device of claim 1 wherein the end of the movable portion of the drill-barrel is located outside the first drill bit and a second drill bit is attached to the end of the movable portion of the drill-barrel.
5. The reaming device of claim 4 wherein said second drill bit is provided with a drain hole.
6. The reaming device of claim 1 wherein said reamer head component comprises a reamer head, a mount, and a pushing mechanism;
the mounting seat is mounted in the accommodating hole, the expanding bit is connected to the mounting seat in a sliding mode, and the output end of the pushing mechanism is connected with the expanding bit;
the driving piece is connected with the pushing mechanism to drive the pushing mechanism to push the reamer bit to slide.
7. The reaming device of claim 6, wherein the pushing mechanism comprises an oil cylinder, the driving member comprises an oil storage bag and an oil delivery pipe, the oil delivery pipe is connected between the oil cylinder and the oil storage bag, and the movable portion of the drill cylinder is connected with the oil storage bag.
8. The reaming device according to claim 1, wherein the drill sending cylinder is provided with an expansion bladder and a fracturing valve, and the fracturing valve is supplied with liquid through a liquid injection pipe;
the expansion bag supplies liquid through an expansion liquid pipe so as to control the expansion and contraction of the expansion bag.
9. The reaming device of claim 1 wherein said drill feed barrel is provided with an adjustment assembly comprising a mounting ring and an adjustment rod, said mounting ring being attached to said drill feed barrel and said adjustment rod being attached to said mounting ring to adjust the position of said drill feed barrel.
10. A method of reaming a hole comprising the step of reaming a hole with a reaming device according to any one of claims 1 to 9, the steps comprising,
s01, the drill sending cylinder stretches the first drill into the area to be reamed;
s02, operating the inner drill cylinder to rotate, wherein the inner drill cylinder drives the expanding bit of the expanding bit component to extend out of the accommodating hole through the driving component;
s03: starting the hole expanding drill bit, and performing hole expanding operation on the hole expanding drill bit;
s04: and closing the expanding bit, and driving the expanding bit to retreat into the accommodating hole by the driving piece.
11. The method of reaming a hole according to claim 10 wherein the step of extending the first reamer head into the area to be reamed further comprises,
s011: operating the expansion liquid pipe to control the expansion of the expansion bag, and sealing the area to be reamed by the expansion bag;
s012: and operating the fracturing valve to perform liquid injection fracturing on the to-be-reamed area.
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