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WO2014027819A1 - Trépan à percussion et procédé de perforation de sol l'utilisant - Google Patents

Trépan à percussion et procédé de perforation de sol l'utilisant Download PDF

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Publication number
WO2014027819A1
WO2014027819A1 PCT/KR2013/007275 KR2013007275W WO2014027819A1 WO 2014027819 A1 WO2014027819 A1 WO 2014027819A1 KR 2013007275 W KR2013007275 W KR 2013007275W WO 2014027819 A1 WO2014027819 A1 WO 2014027819A1
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WO
WIPO (PCT)
Prior art keywords
guide device
bit
pilot
pilot bit
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/007275
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English (en)
Korean (ko)
Inventor
이광익
이수영
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2014027819A1 publication Critical patent/WO2014027819A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • the present invention relates to a hammer bit, and more particularly, to a hammer bit and a ground drilling method using the same, which can perform general and extended drilling with one hammer bit.
  • hammer bit is geothermal, groundwater development, hot spring development, building structure foundation work, tunnel reinforcement method, soil nailing method, temporary nailing method, pile method, slope reinforcement method, earth anchor method, buoyancy anchor method It is a drilling hammer bit that is coupled to a drilling hammer drill or drill rod used in various methods such as drilling and drilling while drilling and oscillating while rotating and maintaining precise vertical and horizontal angles at a desired point and enabling precise expansion.
  • drilling hammer bits have different specifications and structures depending on the conditions of the stratum, and such types of hammer bits can be largely divided into direct drilling hammer bits and indirect drilling hammer bits.
  • the hammer bit for the direct excavation method is used in a safety ground layer where the ground is not collapsed after the excavation is in good condition, or used in a method that does not excavate deeply.
  • the hammer for excavation without using a separate steel tube
  • the bottom of the drill is fitted with a hammer bit to excavate the strata.
  • the hammer bit for the indirect digging method is used for the method of drilling while embedding the steel tube in the drilling hole, and inserts the hammer bit mounted on the hammer drill into the steel tube to expose the hammer bit to the bottom of the steel tube. After the hammer bit is rotated, a hole wider than the diameter of the steel pipe is drilled, and when the excavation is completed, the hammer bit may be lifted again through the steel pipe to recover the hammer bit.
  • Such a conventional hammer bit is disclosed in Document 1 (Korea Patent Publication No. 10-0871127, registered date: 2008.11.24), the hammer bit is coupled to the lower end of the hammer drill is inserted into the steel tube, and then vibrated And receiving the external force from the rotating hammer drill to rotate the bit housing (corresponding to the "housing bit” of the present invention, hereinafter referred to as “housing bit”) clockwise, wherein the multi-drive bit (“ Wing bit ”, hereinafter referred to as“ wing bit ”) is initially folded inwardly smaller than the outer diameter of the housing bit, and when the housing bit touches the ground, the wing bit is unfolded at the same time as the ground contact and the housing bit and steel If it continues to form a diameter larger than the outer diameter of the pipe, and continues to receive rotational force from the hammer drill, it digs into the ground while excavating the circumferential ground. It is good.
  • the hammer bit is rotated in the opposite direction (here counterclockwise) of the excavation operation so that the wing bit is moved to its original position, that is, the lower portion of the housing bit, and the hammer bit is contracted, and then through the steel tube.
  • the drilling of the ground is completed by lifting the hammer bit.
  • the technical problem to be achieved by the present invention is to install a pilot bit and a wing bit together in one hammer bit, when drilling the ground, with a single hammer bit, a hammer that can perform both general and extended drilling to the desired point It is to provide a bit and a method for drilling the ground using the same.
  • the hammer bit according to the present invention is a guide device in which the first and second locking jaws are disposed inside the cylindrical hollow portion, and partially inserted into the cylindrical hollow portion of the guide device, A pilot bit coupled between the first and second latching jaw of the guide device or coupled only to the second locking jaw of the guide device, and disposed between the guide device and the pilot bit, such that the pilot bit is disposed between the first and second hooking jaw of the guide device.
  • a pilot bit coupled between the first and second latching jaw of the guide device or coupled only to the second locking jaw of the guide device, and disposed between the guide device and the pilot bit, such that the pilot bit is disposed between the first and second hooking jaw of the guide device.
  • the guide device may be inclined to at least one or more first locking jaws formed on the upper end of the cylindrical hollow portion, the second locking jaws formed at regular intervals in the lower direction from the first locking jaws, and to the outer circumferential surface of the lower end of the cylindrical hollow portion. It may be formed, and may include at least one guide groove for moving the wing bit.
  • the first locking jaw may be N and the second locking jaws may be N-1.
  • any one of the first locking jaws and the second locking jaws may be arranged in a line.
  • the guide device may then comprise a locking hole into which a locking pin is inserted for engagement with the pilot bit.
  • the pilot bit is formed in the vertical direction on the outer surface, the vertical groove in which the first locking jaw and the second locking jaw of the guide device moves, and formed on one side of the upper end of the vertical groove, and thus the first locking jaw of the guide device.
  • the first and second locking grooves to be horizontally inserted and coupled with each other are formed at regular intervals from the first locking groove toward the lower end of the vertical groove, so that the second locking jaws of the guide device are selectively horizontally inserted and coupled to each other. It may include a locking groove.
  • first locking grooves may be N
  • second and third locking grooves may be N-1.
  • the pilot bit includes a bit portion coupled to the bottom of the hollow portion of the guide device to drill the ground, and a shaft portion protruding from the upper end portion of the bit portion for a predetermined length, and inserted into and coupled to the guide device.
  • the locking groove is formed in the horizontal or inclined direction, and the pilot bit and the guide device can be fastened by the locking pin inserted through the locking groove of the pilot bit and the locking hole of the guide device.
  • the locking groove may be formed to have a width and an area in which the locking pin is movable up and down or in the left and right directions when the guide device moves up and down or rotates left and right.
  • a seating groove into which the wing bit is inserted and seated may be formed.
  • the wing bit may slide upward or downward along a guide groove formed on the outer surface of the guide device by the rotation and the vertical movement of the guide device.
  • the wing bit may be at least one.
  • the maximum outer periphery of the guide device and the maximum outer periphery of the bit portion at the bottom of the pilot bit are the same, and the wing bit protrudes from the maximum outer peripheral surface of the bit portion at the bottom of the pilot device and the pilot bit at the time of expansion drilling, and at the time of normal drilling. And may be inserted into the maximum outer circumferential surface of the bit portion below the pilot bit.
  • the step of rotating the guide device in the first rotation direction with the pilot bit as the center axis, and by vertically moving the guide device in the upper direction of the pilot bit And inserting and moving the wing bit in the inward direction of the guide device, and rotating the guide device in a second rotation direction opposite to the first rotation direction with the pilot bit as the central axis, thereby performing general drilling. have.
  • the step of rotating in the first rotation direction may include preparing a pilot bit coupled to the first and second latching jaws of the guide device, and rotating the guide device in the first rotation direction, thereby adjusting the first of the guide device. Separating the pilot bit from the first, the second locking step.
  • step of rotating in the second direction of rotation opposite to the first direction of rotation to perform normal drilling by rotating the guide device in the second direction of rotation, coupling the pilot bit only to the second engaging jaw of the guide device And rotating the pilot device continuously in the second direction of rotation, with the rotation of the pilot bit coupled with the guide device, to perform normal drilling.
  • the surface drilling method using a hammer bit according to the present invention, the step of rotating the guide device in the first rotation direction with the pilot bit as the central axis, by moving the guide device vertically in the lower direction of the pilot bit , And protruding movement of the wing bit in an outward direction of the guide device, and rotating the guide device in a second rotation direction opposite to the first rotation direction with the pilot bit as a central axis, thereby performing expansion drilling.
  • the step of rotating in the first rotation direction the step of preparing a pilot bit coupled to only the second locking jaw of the guide device, by rotating the guide device in the first rotation direction, from the second locking jaw of the guide device Separating the pilot bits.
  • the surface drilling method using a hammer bit the step of rotating the guide device in the first rotation direction with the pilot bit as the center axis, and by vertically moving the guide device in the upper direction of the pilot bit Inserting and moving the wing bit in an inward direction of the guide device, and rotating the guide device in a second rotational direction opposite to the first rotational direction with the pilot bit as the central axis. And rotating the guide device in the first rotational direction with the pilot bit as the center axis, and vertically moving the guide device in the downward direction of the pilot bit to protrude the wing bit outwardly. And a guide device, the second direction opposite to the first direction of rotation, with the pilot bit as the central axis.
  • An expansion step of drilling includes rotating at least in the forward direction at least once may be carried out by selectively combining.
  • one hammer bit when the pilot bit and the wing bit are mounted together in one hammer bit, when drilling the ground, one hammer bit can perform both general drilling and extended drilling to a desired point.
  • both general drilling and extended drilling can be performed, which not only shortens working time but also improves work efficiency.
  • FIG. 1 is an exploded view of a hammer bit according to the present invention
  • FIGS. 4 to 11 are diagrams for explaining the ground drilling method using a hammer bit according to a first embodiment of the present invention
  • 16 is a cross-sectional view comparing the distance between the locking step of the guide device and the locking groove of the pilot bit;
  • 17 is a flowchart showing a general drilling process of a hammer bit according to the present invention.
  • 19 is a flowchart illustrating an extended drilling process of a hammer bit according to the present invention.
  • 21 is a flow chart showing the continuous process of the normal and extended drilling of the hammer bit in accordance with the present invention
  • FIG. 22 shows a hammer bit for successively performing normal and extended drilling
  • FIG. 1 is an exploded view of the hammer bit according to the present invention
  • Figures 2 and 3 is a coupling diagram of the hammer bit according to the present invention
  • Figure 2 is a coupling diagram of the hammer bit according to the general drilling
  • Figure 3 The degree of coupling of the hammer bits accordingly.
  • the hammer bit 100 may include a guide device 200, a wing bit 400, and a pilot bit 500.
  • the guide device 200 may include a hollow hollow portion as a hollow hollow member.
  • an air line 201 through which air may flow may be formed in the hollow part of the guide device 200.
  • the air line 201 is formed at the center of the vertical axis direction, branched outwardly from the main air hole 201a and the main air hole 201a communicating with the air line 201 of the pilot bit 500. It may include a branch air hole 201b formed in communication with the mounting groove 260 in which the bit 400 is installed.
  • the driving device may be connected to the upper portion of the guide device 200, and the wing bit 400 and the pilot bit 500 may be fastened to the lower portion of the guide device 200.
  • the driving means may be composed of a drilling hammer drill, a drill rod, and the like, and receives the power from the driving means, the guide device 200 may be driven to rotate while vibrating in one direction, that is clockwise.
  • the guide device 200 may be disposed to protrude first and second locking jaws 210 and 220 inside the hollow part.
  • the first locking jaw 210 is formed on the upper end of the hollow portion, and may be at least one.
  • the first catching jaws 210 may be disposed at predetermined intervals along the inner surface of the hollow part.
  • the second locking jaw 220 may be formed at a predetermined interval from the first locking jaw 210 in the lower direction.
  • first locking jaw 210 may be N pieces
  • second locking jaw 220 may be N-1 pieces.
  • any one of the first locking jaws 210 and the second locking jaws 220 may be arranged in a line in parallel with each other on a vertical axis line of the hollow portion of the guide device 200.
  • the guide device 200, the guide groove 261 may be formed to be inclined on the outer peripheral surface of the lower end of the hollow portion.
  • the guide groove 261 may be at least one, and the coupling portion 410 of the wing bit 400 may move along the guide groove 261.
  • a mounting groove 260 may be further formed on an outer circumferential surface of the lower end of the hollow part of the guide device 200 to allow the wing bit 400 to be movable in an inclined vertical direction.
  • a coupling groove 230 into which the coupling protrusion 570 of the pilot bit 500 is inserted and coupled to the lower end of the hollow portion of the guide device 200 may be stepped in the circumferential direction.
  • the guide device 200 may include a locking hole 240 into which a locking pin 250 is inserted, for fastening with the pilot bit 500.
  • the locking hole 240 may be formed in a horizontal direction perpendicular to the vertical axis of the guide device 200.
  • the pilot bit 500 may be partially inserted into the cylindrical hollow portion of the guide device 200 to be simultaneously coupled to the first and second locking jaws 210 and 220 of the guide device 200 or may be a guide device ( It may be coupled only to the second locking jaw 220 of the 200.
  • the pilot bit 500 may include a bit part 580 and a shaft part 510.
  • the bit portion 580 may be coupled to the bottom portion of the hollow portion of the guide device 200 to puncture the ground.
  • bit portion 580, a plurality of ball tips 590 may be formed protruding.
  • the shaft portion 510 may protrude a predetermined length from an upper end of the bit portion 580, and may be inserted into and coupled to the hollow portion of the guide device 200.
  • the air line 511, the first, second, and third locking grooves 520, 530, and 540, which are vertical grooves, may be formed on the outer surface of the shaft portion 510.
  • the air line 511 which is a vertical groove is formed in the vertical direction on the outer surface of the shaft portion 510, so that the first engaging jaw 210 and the second engaging jaw 220 of the guide device 200 can move vertically.
  • first locking groove 520 is formed at one side of the upper end of the vertical groove, and the first locking jaw of the guide device may be horizontally inserted and coupled.
  • the second and third locking grooves 530 and 540 are formed at regular intervals from the first locking groove 520 in the lower direction of the vertical groove, so that the second locking jaw 520 of the guide device 200 is formed. This can optionally be horizontally inserted and combined.
  • first locking grooves may be N
  • second and third locking grooves may be N-1.
  • a locking groove 550 is formed in a predetermined portion of the shaft portion 510 in a horizontal or inclined direction, through the locking groove 550 of the pilot bit 500 and the locking hole 240 of the guide device 200. By inserting the locking pin 250, the pilot bit 500 and the guide device 200 may be fastened.
  • the locking groove 550 may be formed to have a width and an area in which the locking pin 250 may move in the vertical or horizontal direction when the guide device 200 is vertically moved or rotated left and right.
  • pilot bit 500 is rotatable in the circumferential direction while being coupled to the guide device 200 by the locking pin 250.
  • the locking groove 550 is formed along the circumferential direction of the shaft portion 510, thereby enabling the rotation of the locking pin 250.
  • the amount of rotation of the guide device 200 and the pilot bit 500 rotated by the groove 230 is limited.
  • wing bit 400 when the wing bit 400 is inserted into the outer surface of the guide device 200 by the coupling movement of the pilot bit 500, the wing bit 400 is inserted and seated at the lower end of the shaft part 510. Grooves 560 may be formed.
  • pilot bit 500 is provided with an air line 511 including a plurality of holes that are branched from the shaft portion 510 to the bit portion 580.
  • the air line 511 is formed in the center of the shaft portion 510 in the axial direction, and the main air hole 511a communicating with the main air hole 201a of the air line 201 of the guide device 200.
  • a radial branched air hole 511b branched outwardly from the main air hole 511a may be included.
  • the lower branch air holes 511b branching from the lower end of the main air hole 511a may be formed to obliquely penetrate the bit part 580 in the vertical direction.
  • the wing bit 400 is disposed between the guide device 200 and the pilot bit 500, so that the pilot bit 500 is connected to the first and second locking jaws 210 and 220 of the guide device 200.
  • the pilot bit 500 When coupled simultaneously, when the pilot bit 500 is protruded in the outward direction of the guide device 200 by the coupling movement of the pilot bit 500, and the pilot bit 500 is coupled only to the second engaging jaw 220 of the guide device 200, By the coupling movement of the pilot bit 500, the pilot bit 500 may be inserted into the guide device 200.
  • the wing bit 400 may slide upward or downward along the guide groove 261 formed on the outer surface of the guide device 200 by the rotation and the vertical movement of the guide device 200.
  • the wing bit 400 may be at least one.
  • the maximum outer circumference of the guide device 200 and the maximum outer circumference of the bit unit 580 under the pilot bit 500 may be the same.
  • the wing bit 400 may protrude from the maximum outer circumferential surface of the bit part 580 at the bottom of the guide device 200 and the pilot bit 500 during the expansion drilling.
  • the wing bit 400 may be inserted into a maximum outer circumferential surface of the bit part 580 at the bottom of the guide device 200 and the pilot bit 500 during normal drilling.
  • three wing bits 400 are formed is illustrated, but is not limited to three, and may be formed in any number of two to five.
  • the wing bit 400 is slidably coupled to the guide groove 261 formed in the mounting groove 260 of the guide device 200 to be moved in an inclined direction up and down on the mounting groove 260 of the guide device 200. Can be.
  • the coupling portion 410 that is slidably coupled to the guide groove 261 of the mounting groove 260 is formed protruding in an oblique direction on the top of the wing bit 400.
  • the wing bit 400 is raised by the pilot bit 500 during the extended drilling, but protrudes out of the guide device 200, but during the normal drilling As the pilot bit 500 is lowered, the wing bit 400 is lowered by the weight thereof, so that the pilot bit 500 is lowered and positioned under the guide device 200.
  • the wing bit 400 located below the guide device 200 is positioned in the outer circumferential surface of the guide device 200 and the outer circumferential surface of the bit portion 580 of the pilot bit 500, and thus does not interfere with general drilling. .
  • FIGS. 4 to 11 are diagrams for explaining a surface drilling method using a hammer bit according to the first embodiment of the present invention, it is for explaining a process of combining the hammer bit for general drilling.
  • FIGS. 5, 7, 9, and 11 are plan views of the hammer bits.
  • the first engaging groove 520 of the pilot bit 500 is coupled to the first engaging jaw 210 of the guide device 200, and the As the third locking groove 540 of the pilot bit 500 is coupled to the second locking jaw 220, the wing bit 400 may protrude outwardly of the guide device 200.
  • the guide device 200 is rotated in the first rotation direction with the pilot bit 500 as the central axis, so that the guide device 200 may be rotated.
  • the first locking groove 520 and the third locking groove 540 of the pilot bit 500 may be separated from the first and second locking jaws 210 and 220.
  • the guide device 200 is vertically moved upward of the pilot bit 500 so that the wing bit 400 is inserted into the guide device 200. You can move it.
  • the first locking jaw 210 of the guide device 200 is located outside the upper side of the pilot bit 500, and the second locking jaw 220 of the guide device 200 is formed of the pilot bit 500. It may be located corresponding to the two locking grooves (530).
  • the general guide drilling is performed by rotating the guide device 200 in a second rotation direction opposite to the first rotation direction with the pilot bit 500 as the central axis. can do.
  • the first latching jaw 210 of the device 200 may support the pilot bit 500 outside the upper side of the pilot bit 500.
  • the general guide drilling may be performed by continuously rotating the guide device 200 in the second rotation direction and rotating the pilot bit 500 coupled with the guide device 200.
  • the wing bit 400 is inserted and moved inward of the guide device 200, it is not used for general drilling.
  • FIGS. 12 to 15 are diagrams for explaining a surface drilling method using a hammer bit according to the second embodiment of the present invention, it is for explaining a process of combining the hammer bit for extended drilling.
  • the second locking jaw 220 of the guide device 200 is coupled to the second locking groove 520 of the pilot bit 500, and the first locking of the guide device 200.
  • the jaw 210 is located outside the pilot bit 500 so that the wing bit 400 may be inserted into the guide device 200 in the inward direction.
  • the guide device 200 is rotated in the first rotation direction with the pilot bit 500 as the central axis, so that the second engagement of the guide device 200 is performed.
  • the second locking groove 530 of the pilot bit 500 may be separated from the jaw 220.
  • the guide device 200 may be vertically moved downward of the pilot bit 500 so that the wing bit 400 may be protruded outwardly of the guide device 200. have.
  • the first locking jaw 210 of the guide device 200 is located corresponding to the first locking groove 520 of the pilot bit 500, the second locking jaw 220 of the guide device 200, It may be located corresponding to the third locking groove 540 of the pilot bit 500.
  • the expansion of the guide device 200 may be performed by rotating the guide device 200 in the second rotation direction opposite to the first rotation direction with the pilot bit 500 as the central axis. .
  • the first locking jaw 210 of the guide device 200 is coupled to the first locking groove 520 of the pilot bit 500, and the guide The second locking jaw 220 of the device 200 may be coupled to the third locking groove 540 of the pilot bit 500.
  • the pilot device 200 is continuously rotated in the second rotational direction, and the pilot bit 500 coupled with the guide device 200 and the wing bit 400 protruding outwardly of the guide device 200. With rotation of), expansion drilling can be performed.
  • one hammer bit can perform both general and extended drilling to a desired point.
  • the present invention may be performed by selectively combining the general drilling process and the expansion drilling process at least once.
  • the present invention can use both a single hammer bit and general drilling and extended drilling, so that not only the working time can be shortened but also the work efficiency is improved.
  • 16 is a cross-sectional view comparing the distance between the locking step of the guide device and the locking groove of the pilot bit.
  • the guide device 200 may include at least one first engaging jaw 210 formed at an upper end of the cylindrical hollow portion, and a first gap D1 in a lower direction from the first engaging jaw 210. It may include a second locking step 220 is formed.
  • the first locking jaw 210 and the second locking jaw 220 may be arranged side by side.
  • the pilot bit 500 may include a shaft portion 510 and a bit portion 580, and the first locking jaw 210 of the guide device 200 is horizontally inserted and coupled to the shaft portion 510.
  • the first and second locking grooves 520 and the first locking grooves 520 are formed at predetermined intervals, and the second and second locking jaws 220 of the guide device 200 are selectively inserted and coupled horizontally.
  • Three locking grooves 530 and 540 may be included.
  • the upper end of the first locking groove 520 and the upper end of the second locking groove 530 are spaced apart by the second interval D2, and the lower end of the first locking groove 520 and the second locking groove 530 are separated from each other.
  • the lower end of) is spaced apart by the third interval D3.
  • the first interval D1, the second interval D2, and the third interval D3 may be the same.
  • the second engaging jaw 220 of the guide device 200 may have the second engaging groove 520 of the pilot bit 500. It can be fastened to the general drilling, the first locking jaw 210 of the guide device 200 is fastened to the first locking groove 520 of the pilot bit 500 and at the same time, the first of the guide device 200 The second locking jaw 220 may be fastened to the third locking groove 540 of the pilot bit 500 to perform expansion drilling.
  • FIG. 17 is a flowchart illustrating a general drilling process of a hammer bit according to the present invention
  • FIG. 18 is a view illustrating a hammer bit performing general drilling.
  • a hammer bit having a pilot bit coupled to first and second latching jaws of a guide device is provided, and a general drilling request is made to the hammer bit.
  • the hammer bit separates the pilot bit from the first and second locking jaws of the guide device.
  • the hammer bit then rotates the guide device in a second rotational direction opposite to the first rotational direction with the pilot bit as the central axis.
  • the hammer bit couples the pilot bit only to the second locking step of the guide device.
  • general drilling may be performed on the ground by rotation of the pilot bit 500 coupled with the guide device 200.
  • the wing bit 400 is inserted and moved in the inward direction of the guide device 200 and does not participate in the general drilling.
  • FIG. 19 is a flowchart illustrating a process of drilling an extension of a hammer bit according to the present invention
  • FIG. 20 is a view illustrating a hammer bit performing an expansion drilling.
  • a hammer bit having a pilot bit coupled to only the second latching jaw of the guide device is provided, and an extension puncture is requested to the hammer bit (S31).
  • the hammer bit separates the pilot bit from the second locking step of the guide device.
  • the hammer bit moves the guide device vertically in the lower direction of the pilot bit, and simultaneously moves the wing bit in the outward direction of the guide device.
  • the hammer bit then rotates the guide device in a second rotational direction opposite to the first rotational direction with the pilot bit as the central axis.
  • the hammer bit performs expansion drilling by rotating the pilot bit coupled with the guide device and the wing bit protruding outward of the guide device.
  • expansion drilling may be performed on the ground by rotation of the pilot bit 500 coupled with the guide device 200 and the wing bit protruding outward of the guide device.
  • the wing bit 400 may protrude and move outwardly of the guide device 200 to perform expansion drilling.
  • FIG. 21 is a flowchart illustrating a continuous process of normal drilling and extended drilling of a hammer bit according to the present invention
  • FIG. 22 is a view illustrating a hammer bit that continuously performs general drilling and extended drilling.
  • the hammer bit checks whether there is a request for combining the pilot device and the pilot bit for general puncturing (S51).
  • the hammer bit combines the guide device and the pilot bit for general puncturing and performs normal puncturing (S52, S53).
  • the hammer bit checks whether there is a request for combining the guide device and the pilot bit for extended drilling.
  • the hammer bit combines the guide device and the pilot bit for extended puncture and performs extended puncture (S55 and S56).
  • the hammer bit repeats the step of checking whether there is a request for combining the guide device and the pilot bit for general drilling.
  • the hammer bit checks whether there is a request for terminating normal puncturing or extended puncturing. (S57)
  • the hammer bit repeats the step of checking whether there is a request for combining the pilot device and the pilot bit for normal puncturing.
  • the hammer bit may perform extended drilling while performing general drilling, or in some cases, performing general drilling while performing extended drilling.
  • the hammer bit may be performed by selectively combining the general drilling process and the extended drilling process at least once.
  • the present invention by mounting the pilot bit and the wing bit together in one hammer bit, when drilling the ground, with one hammer bit, it is possible to perform both general and extended drilling to the desired point.
  • both general drilling and extended drilling can be performed, which not only shortens working time but also improves work efficiency.

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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)
PCT/KR2013/007275 2012-08-13 2013-08-13 Trépan à percussion et procédé de perforation de sol l'utilisant Ceased WO2014027819A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0088563 2012-08-13
KR1020120088563A KR101229209B1 (ko) 2012-08-13 2012-08-13 하나의 굴착공에서 일반,확공을 병행할 수 있는 해머비트 및 이를 이용한 시공방법

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WO2014027819A1 true WO2014027819A1 (fr) 2014-02-20

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PCT/KR2013/007275 Ceased WO2014027819A1 (fr) 2012-08-13 2013-08-13 Trépan à percussion et procédé de perforation de sol l'utilisant

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WO (1) WO2014027819A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11959336B2 (en) 2017-07-24 2024-04-16 Luc Charland Drilling system and method of using same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524355B1 (ko) * 2013-07-04 2015-06-04 이광익 회수식 확공비트를 이용한 터널 그라우팅 보강 공법
KR101665346B1 (ko) * 2014-03-24 2016-10-14 (주)씨엔피텍 굴착용 비트
KR101549401B1 (ko) 2014-04-22 2015-09-08 안동대학교 산학협력단 확장형 다중 윙비트를 이용한 터널보강용 천공비트
KR101629301B1 (ko) * 2014-09-18 2016-06-10 창신인터내셔날 주식회사 오버버든 비트
KR101705284B1 (ko) * 2015-11-02 2017-02-13 (주)씨엔피텍 굴착용 비트
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