KR101229209B1 - Hammer bit - Google Patents

Hammer bit Download PDF

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Publication number
KR101229209B1
KR101229209B1 KR1020120088563A KR20120088563A KR101229209B1 KR 101229209 B1 KR101229209 B1 KR 101229209B1 KR 1020120088563 A KR1020120088563 A KR 1020120088563A KR 20120088563 A KR20120088563 A KR 20120088563A KR 101229209 B1 KR101229209 B1 KR 101229209B1
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KR
South Korea
Prior art keywords
bit
guide
hammer
pilot
locking
Prior art date
Application number
KR1020120088563A
Other languages
Korean (ko)
Inventor
이광익
이수영
Original Assignee
이수영
이광익
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Publication date
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Priority to KR1020120088563A priority Critical patent/KR101229209B1/en
Application granted granted Critical
Publication of KR101229209B1 publication Critical patent/KR101229209B1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/26Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32Drill 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/36Percussion drill bits
    • E21B10/40Percussion drill bits with leading portion
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/62Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Abstract

PURPOSE: A hammer bit capable of combining a normal boring with a reaming in an excavated hole and a construction method thereof are provided to perform a normal boring and a reaming with one hammer bit on a desired position when excavating the ground by composing a pilot bit and a wing bit in one hammer bit. CONSTITUTION: A hammer bit(100) capable of combining a normal boring with a reaming in an excavated hole includes a guide device(200), a wing bit(400) and a pilot bit(500). The guide device is rotated and vibrated by a driving unit. The wing bit is connected with the guide device to be lifted up and down in an inclined direction between the top and the bottom of the guide device, placed on the bottom surface of the guide device for a normal boring, and lifted to be protruded to the outside of the guide device. The pilot bit is combined with the guide device to bore the ground.

Description

Hammer bit that can be combined with general and expansion in one excavation hole and construction method using the same {Hammer Bit}
The present invention relates to a hammer bit for excavating the strata, and more particularly, to a hammer bit and a construction method using the same as a single hammer bit to perform both normal drilling and expansion drilling.
Generally, hammer bit is geothermal, groundwater development, hot spring development, building structure foundation, 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 drill for drilling and drilling, which is used for various methods such as drilling and drilling rods, and drills boreholes while vibrating and rotating, and at the same time, maintains accurate vertical and horizontal angle at a desired point and enables precision expansion.
These drilling hammer bits have different specifications and structures depending on the conditions of the strata, and these types of hammer bits are largely divided into direct drilling hammer bits and indirect drilling hammer bits.
The hammer bit for direct excavation method is used in the safety ground layer where the ground is not collapsed after excavation because of the good condition of the ground layer or it is used in the way that does not excavate deeply. A hammer bit is attached to the lower end to excavate the strata.
The hammer bit for indirect drilling method is used to dig a steel pipe in the drilling hole.The hammer bit inserted in the hammer drill is inserted into the steel pipe to expose the hammer bit to the bottom of the steel pipe. After that, the hammer bit is rotated to drill a hole wider than the diameter of the steel tube, and when the excavation is completed, the hammer bit is lifted again through the steel tube to recover the hammer bit.
In the conventional hammer bit, as described in [Document 1], the hammer bit is coupled to the lower end of the hammer drill and inserted into the steel tube, and then receives the external force from the hammer drill which vibrates and rotates. Corresponding to the "housing bit" of the invention, hereinafter referred to as "housing bit" is rotated clockwise, wherein the multi-drive bit (corresponding to the "wing bit" of the present invention, hereinafter referred to as "wing bit") In the initial stage, the inner side of the housing bit is folded smaller than the outer diameter of the housing bit, but when the housing bit touches the ground, the wing bit is unfolded at the same time as the ground contact, forming a diameter larger than the outer diameter of the housing bit and the steel tube. Continuously receiving rotational force from the hammer drill will dig into the basement while digging the circumferential ground.
In addition, when the excavation work is completed, the hammer bit is rotated in the opposite direction (here counterclockwise) of the excavation work so that the wing bit is moved to its original position, i.e., the lower part of the housing bit, to shrink the hammer bit, and then hammer The drilling of the ground is completed by lifting the bit.
[Document 1] Republic of Korea Patent Publication No. 10-0871127 (name: hammer bit), the date of registration: November 24, 2008, page 5, Figures 1 to 3
However, such a conventional hammer bit is inconvenient to use a hammer bit of different specifications according to the aperture to be drilled. That is, in general drilling, the drilling work is performed with the hammer bit equipped with the general bit without the wing bit, and the expansion drilling requires the drilling work with the hammer bit equipped with the wing bit. There is a disadvantage of falling castle.
Therefore, the present invention has been made to solve the problems of the prior art as described above, by forming a pilot bit and a wing bit in one hammer bit when drilling the ground as a single hammer bit as a general drilling and expansion drilling It is an object of the present invention to provide a hammer bit and a construction method using the same so that all of the desired points can be performed.
The above object is a hollow guide device that is vibrated and rotated by the drive means; A wing bit coupled to be lifted up and down in the inclined direction of the guide device, being lowered during normal drilling and positioned on a lower surface of the guide device, and being raised to protrude outward of the guide device during expanding drilling; And a pilot bit coupled to the guide device to puncture the ground.
The pilot bit may include a bit part positioned below the guide device to drill the ground, and a shaft part protruding from the upper surface of the bit part to be inserted into and coupled to the guide device.
In addition, a locking groove is formed in the shaft portion of the pilot bit, and a locking pin penetrating the locking groove of the pilot bit is inserted into and coupled to the guide device, so that the pilot bit is coupled to the guide device by the locking pin. While moving to a relative direction in the circumferential direction is provided while the guide device and the pilot bit is coupled.
In addition, a plurality of locking jaws are spaced up and down in the guide device, and a plurality of locking grooves are formed in the shaft portion of the pilot bit inserted into the guide device, respectively. do.
In addition, a stepped coupling groove is formed inside the guide device along an inner circumferential surface, and a coupling protrusion inserted into the coupling groove of the guide device is formed in the shaft portion of the pilot bit, and the wing of the pilot bit when the general drilling is performed. A recess is formed in which the bit is inserted and seated.
In addition, an air line communicating with each other is formed in the guide device and the pilot bit, and the air line includes a main air hole formed in an axial direction, and a plurality of branch air holes branched outwardly from the main air hole.
In addition, in the above-described construction method using the hammer bit of the present invention, the pilot device of the hammer bit is lowered to the lower portion of the guide device and the guide device is placed in a state where the wing bit is positioned below the guide device. Rotating in one direction to engage the upper and lower locking jaws in the upper and lower grooves of the pilot bit, respectively, and then rotating the pilot bit in one direction through the guide device to perform general drilling; And after the general drilling, the guide device is rotated in the opposite direction to lift the pilot bit into the guide device while the upper and lower locking jaws are released from the upper and center locking grooves of the pilot bit, respectively. After protruding, the guide device is rotated in one direction so that the upper and lower locking jaws are engaged with the upper and lower locking grooves of the pilot bit, respectively, and then the pilot bit and the wing bit are rotated in one direction through the guide device. It is also achieved by a construction method using a hammer bit comprising a step of expanding the drilling.
According to the hammer bit of the present invention and a construction method using the same, it is possible to carry out the general drilling as a pilot bit configured in the hammer bit when the ground excavation, and to carry out the expansion drilling as a wing bit configured in the hammer bit, Both expansion and drilling can be done, which can reduce the working time and thereby increase the work efficiency.
1 is a separate block diagram illustrating a hammer bit according to the present invention.
Figure 2 is a combination of assembled hammer bit according to the present invention, Figure 2a is a cross-sectional configuration diagram, Figure 2b is a plan configuration diagram.
3 is a view of the general drilling using the hammer bit of the present invention, Figure 3a is a cross-sectional configuration diagram, Figure 3b is a plan configuration diagram.
Figure 4 is a diagram of the adjustment process for the expansion of the hammer bit of the present invention after the normal drilling, Figure 4a is a cross-sectional configuration diagram, Figure 4b is a plan configuration diagram.
5 is a view when expanding the hole using the hammer bit of the present invention, Figure 5a is a cross-sectional configuration diagram, Figure 5b is a plan configuration diagram.
6 is a view showing an excavation hole drilled by a hammer bit according to the present invention, Figure 6a is a general drilling state, Figure 6b is an extended drilling state, Figure 6c is a continuous drilling and a general drilling expansion drill Drawing.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 6C illustrate a hammer bit according to the present invention.
As shown in FIG. 1, the hammer bit 100 of the present invention includes a guide device 200, a wing bit 400, and a pilot bit 500.
The guide device 200 is a hollow member, the inside of which is hollow, the air line 201 through which air can flow is formed, the air line 201 is formed in the center of the axial direction to be described later pilot The main air hole 201a communicating with the air line 201 of the bit 500 and the mounting groove 260, which is branched outwardly from the main air hole 201a and the wing bit 400 to be described later, are installed. It includes a branch air hole 201b is formed to be.
In addition, the guide device 200 has a driving means connected to an upper portion thereof, and a wing bit 400, a pilot bit 500, etc., which will be described later, are configured at the lower portion thereof.
Here, the driving means may be composed of a drilling hammer drill or a drill rod, the guide device 200 is driven by vibrating in one direction or clockwise by receiving power from such a driving means.
On the other hand, on the inner circumferential surface of the guide device 200 into which the pilot bit 500, which will be described later, is inserted, a plurality of locking jaws 210 and 220 are spaced apart in the same line up and down, and the lower end of the inner circumferential surface of the guide device 200 is formed. The coupling groove 230 is inserted into the coupling protrusion 570 of the pilot bit 500 to be described later is formed stepped in the circumferential direction.
In addition, a mounting groove 260 is formed at a lower end of the outer peripheral surface of the guide device 200 so that the wing bit 400 to be described later is movable in an inclined vertical direction, and a wing bit is formed on an upper surface of the mounting groove 260. Guide grooves 261 to which the coupling portion 410 of the 400 is movably coupled are formed to be inclined.
In addition, a locking hole 240 into which the locking pin 250 is inserted and coupled to the outer surface of the guide device 200 is formed in a direction perpendicular to the axial direction.
The wing bit 400 is slidably coupled to the guide groove 261 formed in the mounting groove 260 of the guide device 200, and is elevated in an inclined direction up and down on the mounting groove 260 of the guide device 200. To this end, 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 to the top of the wing bit 400.
Therefore, the wing bit 400 is raised by the pilot bit 500, which will be described later, during extension drilling by the coupling part 410 and the guide groove 261, but protrudes out of the guide device 200. During drilling, as the pilot bit 500 is lowered, the wing bit 400 is lowered by its own weight to be positioned under the guide device 200. In this case, the wing bit 400 positioned below the guide device 200 is located within an area formed by the bit portion 580 of the guide device 200 and the pilot bit 500, and thus does not interfere with general drilling.
On the other hand, the lower surface of the wing bit 400 as described above is formed with a plurality of ball tips 420 to perforate the ground.
In the embodiment of the present invention shown in FIG. 2B, an example in which three wing bits 400 are formed is illustrated, but is not limited to three, but may be formed in any number of two to five.
The pilot bit 500 is a bit that can be elevated and coupled to the guide device 200 to general puncture the ground, the bit portion 580 to directly puncture the ground, and upward from the upper surface of the bit portion 580 It includes a shaft portion 510 formed to protrude.
The shaft portion 510 of the pilot bit 500 is inserted into and coupled to the guide device 200, and the locking step 210 of the guide device 200 is formed on the outer circumferential surface of the shaft portion 510 of the pilot bit 500. A plurality of locking grooves 520, 530, and 540, into which the 220 is inserted and locked, are spaced apart from each other in the upper and lower portions.
In particular, the upper locking groove 520 is formed in the upper step of the outer peripheral surface of the shaft portion 510 of the plurality of locking grooves 520, 530, 540 is inserted into the upper engaging jaw 210 is coupled, the shaft portion The locking projections 220 of the lower portion are selectively inserted into and coupled to the locking grooves 530 and 540 of the central portion and the lower portion formed at the center and the lower portion of the outer circumferential surface of the 510.
In addition, the locking groove 550, through which the locking pin 250 penetrates and is coupled to the outer circumferential surface of the shaft part 510, is formed to be stepped in a circumferential direction with a predetermined area, thereby pilot bit 500 is formed by the locking pin 250. ) Is rotatably provided in the circumferential direction while being coupled to the guide device 200. In particular, since the locking groove 550 is formed stepped along the circumferential direction of the shaft portion 510, the locking groove 550 enables rotation of the locking pin 250.
In addition, an outer surface of the shaft portion 510 opposite to the locking groove 550 is provided with a protrusion protrusion 570 inserted into and coupled to the coupling groove 230 of the guide device 200, and the coupling protrusion 570. The amount of rotation of the guide device 200 and the pilot bit 500 which are relatively rotated by the coupling groove 230 is limited.
On the other hand, the bit portion 580 integrally formed at the lower end of the shaft portion 510 has a plurality of ball tips 590 protruding from the lower surface so as to generally punch the ground.
In addition, as shown in FIGS. 2A and 3A, the wing bit 400 is positioned at the lower side of the guide device 200 on the outer surface of the lower end of the shaft portion 510 bounding the bit part 580. The inner groove 400 is inserted into the mounting groove 560 is formed to be stepped. Therefore, the wing bit 400 inserted and coupled to the seating groove 560 is driven to rotate as the pilot bit 500 during the normal drilling, but the drilling by the wing bit 400 is not performed.
In addition, the pilot bit 500 formed as described above is provided with an air line 511 including a plurality of holes branched from the shaft part 510 to the bit part 580.
The air line 511 is formed in the center of the shaft portion 510 in the axial direction and communicates with the main air hole 201a of the air line 201 of the above-described guide device 200, and Radial branching air holes 511b branched outwardly from the main air hole 511a. In particular, the branch air hole 511b of the lower portion branched from the lower end of the main air hole 511a among the branch air holes 511b is formed to obliquely penetrate the bit portion 580 in the vertical direction.
The construction method using the hammer bit 100 as described above, as shown in Figure 6a and 6b, the general drilling by the pilot bit 500, the expansion drilling by the pilot bit 500 and the wing bit 400 It includes.
In general drilling, as shown in FIG. 6A, the pilot bit 500 of the hammer bit 100 is lowered to the lower part of the guide device 200 so that the wing bit 400 is positioned at the lower part of the guide device 200. The guide device 200 is rotated in one direction so that the upper and lower locking jaws 210 and 220 are engaged with the upper and lower locking grooves 530 of the pilot bit 500, respectively, and then the guide device 200. By rotating the pilot bit 500 in one direction through) to make a general punch.
Expanding the drilling, as shown in Figure 6b, after the general drilling by rotating the guide device 200 in the opposite direction, the upper and lower locking jaws 210, 220 of the upper and lower centers of the pilot bit 500, respectively After releasing from the groove 530, the pilot bit 500 is raised into the guide device 200 to protrude the wing bit 400 out of the guide device 200, and then the guide device 200 is moved in one direction. Rotating the upper and lower locking jaw 210, 220 to the upper locking groove 520 and the lower locking groove 540 of the pilot bit 500, respectively, and then rotates the pilot bit through the guide device 200. (500) and the wing bit 400 is rotated in one direction to make a perforation.
Therefore, by using the hammer bit 100 of the present invention, as shown in Figure 6c, it is possible to perform the general and expansion drilling at the same time.
The method of assembling and constructing the hammer bit according to the present invention will be described in more detail.
First, FIGS. 2A and 2B are cross-sectional views and planar views of the assembled hammer bit, by combining the coupling part 410 of the wing bit 400 with the guide groove 261 of the guide device 200, The wing bit 400 is coupled to the mounting groove 230 of the guide device 200.
Then, the shaft portion 510 of the pilot bit 500 is inserted into the bottom surface of the guide device 200 and coupled, and then the locking pin 250 is coupled to the locking hole 240 of the guide device 200.
Then, the locking pin 250 coupled to the guide device 200 is coupled to penetrate the locking groove 550 of the pilot bit 500, as shown in FIGS. 2A and 2B, on the guide device 200. As the pilot bit 500 is locked and restrained in a state capable of rotation and vertical movement, the coupling of the hammer bit 100 is completed.
3A and 3B are cross-sectional views and planar views of the general drilling using the hammer bit of the present invention. When drilling the ground using the hammer bit 100 of the present invention assembled as described above, By rotating the guide device 200, the guide device 200 and the pilot bit 500 are positioned such that the locking jaws 210 and 220 and the locking grooves 520, 530 and 540 are separated from each other as shown in FIG. 2A. Let's do it.
Then, since the engaging jaw 210 and 220 of the guide device 200 and the engaging grooves 520 and 530 and 540 of the pilot bit 500 are separated from each other, the pilot bit 500 may be driven by its own weight. It is lowered on the guide device 200, the lowering of the pilot bit 500 is the locking pin 250, the upper end of the locking groove 550 of the pilot bit 500 is coupled to the locking hole 240 of the guide device 200 ) Until it is jammed.
Then, when the guide device 200 is rotated to the right (clockwise), as shown in Figure 3a, the upper engaging jaw 210 is seated on the upper surface of the shaft portion 510 of the pilot bit 500, It prevents the rise, the lower locking jaw 220 is inserted into the center locking groove 530 of the pilot bit 500 is locked state, the coupling protrusion 570 of the pilot bit 500 is the guide device 200 ) Is locked to one end of the coupling groove 230.
On the other hand, when the pilot bit 500 is lowered as described above, the wing bit 400 is also inclined downward to the lower portion of the guide device 200 by its own weight, and the wing bit 400 thus lowered is the pilot bit 500. It is inserted into the mounting groove 560 formed in the shaft portion 510 of the) is positioned within the area formed between the guide device 200 and the bit portion 580 of the pilot bit 500.
Accordingly, the guide device 200, which receives power from a driving means such as a drilling hammer drill or a drill rod, is rotated in a clockwise direction to the right, and thus, the lower locking jaw 220 and the center locking groove 530 and the coupling groove 230 are driven. By rotating the pilot bit 500 in the same direction due to the coupling of the coupling protrusion 570) and general drilling of the ground through the bit portion 580 of the pilot bit 500.
4A and 4B are cross-sectional and plan views for adjusting the hammer bit of the present invention for the expansion after the general drilling. As described above, in order to prepare for the expansion after the general drilling, the guide device 200 is reversed to the left. Rotate
Then, the lower locking jaw 220 of the guide device 200, which was caught in the locking groove 530 of the central portion of the pilot bit 500, is separated from the locking groove 530, thereby releasing the pilot bit 500. Is in a state capable of lifting on the guide device 200, wherein the engaging projection 570 of the pilot bit 500 is in a state that is engaged with the other end of the coupling groove 230 of the guide device 200.
Therefore, when the hammer bit 100 is pressed while the pilot bit 500 is in contact with the ground, the pilot bit 500 is inserted into the guide device 200 and raised, and the rise of the pilot bit 500 is a pilot bit. The lower end of the locking groove 550 of the 500 is made until the locking pin 250 is engaged. In particular, when the pilot bit 500 is raised into the guide device 200 as described above, the wing bit 400 positioned between the bit part 580 of the pilot bit 500 and the guide device 200 is The inclined upward direction of the guide groove 261 formed in the mounting groove 260 of the guide device 200 protrudes toward the outer surface of the guide device 200.
In addition, when the locking pin 250 is positioned at the lower end of the locking groove 550 in this manner, each of the locking jaws 210 and 220 of the guide device 200 is connected to the upper locking groove 520 of the pilot bit 500. The lower locking groove 540 is located in the same line.
5A and 5B are cross-sectional views and plan views of the expansion hole when the pilot bit 500 is rotated to the inside of the guide device 200 as described above to rotate the guide device 200 to the right again. .
Then, as shown in FIG. 5B, the upper locking jaw 210 of the guide device 200 is inserted into the upper locking groove 520 of the pilot bit 500 to be caught, and the lower locking jaw 220 is lower locked. The insertion protrusion 570 is inserted into the groove 540, and the coupling protrusion 570 of the pilot bit 500 is positioned at the center of the coupling groove 230 of the guide device 200.
Therefore, the pilot bit 500 is fixed to the inside of the guide device 200 by the combination of the engaging jaw 210, 220 and the engaging groove 520, 540 as described above, and in this state for excavation The guide device 200, which receives power from a driving means such as a hammer drill or a drill rod, is rotated to the right to rotate the pilot bit 500 in the same direction, and the guide device 200 and the pilot bit 500 The wing bit 400 is rotated in the same direction by the rotation to perforate the ground.
100: hammer bit 200: guide device
201: Airline 201a: Main air hole
201b: branch air hole 210,220: locking jaw
230: coupling groove 240: locking hole
250: locking pin 260: mounting groove
261: guide groove 400: wing beat
410: coupling portion 420: ball tip
500: pilot bit 510: shaft part
511: air line 511a: main air hole
511b: branch air hole 520, 530, 540: locking groove
550: locking groove 560: seating groove
570: engaging projection 580: bit part
590: Ball Tip

Claims (10)

  1. A hollow guide device vibrated and rotated by the drive means;
    A wing bit coupled to be lifted up and down in the inclined direction of the guide device, being lowered during normal drilling and positioned on a lower surface of the guide device, and being raised to protrude outward of the guide device during expanding drilling; And
    And a pilot bit coupled to the guide device to puncture the ground.
    The pilot bit may include a bit part positioned below the guide device to puncture the ground, and a shaft part protruding from an upper surface of the bit part to be inserted into and coupled to the guide device.
    A plurality of locking jaws are formed spaced apart vertically in the guide device,
    Hammer bits are formed in the shaft portion of the pilot bit inserted in the guide device spaced apart from each other in the upper and lower portions of the plurality of engaging grooves that the locking jaw of the guide device is engaged.
  2. delete
  3. The method according to claim 1,
    Locking groove is formed in the shaft portion of the pilot bit, the hammer bit is coupled to the locking pin penetrating through the locking groove of the pilot bit.
  4. The method according to claim 3,
    The locking groove is formed stepwise along the circumferential direction on the outer peripheral surface of the shaft bit of the pilot bit, the locking pin is moved up and down in the locking groove, while the pilot bit and the guide device are coupled by the locking pin in the circumferential direction Relative hammer bit rotated.
  5. delete
  6. The method according to claim 1,
    A stepped coupling groove is formed in the guide device along an inner circumferential surface thereof.
    A hammer bit is formed in the shaft portion of the pilot bit protruding engaging projection is inserted into the coupling groove of the guide device.
  7. The method according to claim 1,
    The hammer bit is formed in the shaft portion of the pilot bit is formed a seating groove is inserted into the wing bit when the general drilling.
  8. The method according to claim 1,
    The hammer bit is formed in the guide device and the pilot bit are in communication with the air line.
  9. The method according to claim 8,
    And each air line of the guide device and the pilot bit includes a main air hole formed in an axial direction, and a plurality of branch air holes branched outwardly from the main air hole.
  10. In the construction method using a hammer bit of claim 6,
    The pilot bit of the hammer bit is lowered to the lower part of the guide device, and the guide device is rotated in one direction while the wing bit is positioned below the guide device. After engaging in the step, the general drilling by rotating the pilot bit in one direction through the guide device; And
    After the general drilling, rotate the guide device in the opposite direction and lift the pilot bit into the guide device while lifting the upper and lower locking jaws from the upper and center locking grooves, respectively. After protruding, the guide device is rotated in one direction so that the upper and lower locking jaws are engaged with the upper and lower locking grooves of the pilot bit, respectively, and then the pilot bit and the wing bit are rotated in one direction through the guide device for expansion. Construction method using a hammer bit comprising a step of drilling.
KR1020120088563A 2012-08-13 2012-08-13 Hammer bit KR101229209B1 (en)

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KR1020120088563A KR101229209B1 (en) 2012-08-13 2012-08-13 Hammer bit
PCT/KR2013/007275 WO2014027819A1 (en) 2012-08-13 2013-08-13 Hammer bit and ground perforation method using same

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524355B1 (en) * 2013-07-04 2015-06-04 이광익 Tunnel grouting reinforcement method
KR101549401B1 (en) 2014-04-22 2015-09-08 안동대학교 산학협력단 Drilling bit for supporting tunnel using expansion type multi wing bit
KR20150110996A (en) * 2014-03-24 2015-10-05 (주)씨엔피텍 Drilling bit
KR20160033478A (en) * 2014-09-18 2016-03-28 창신인터내셔날 주식회사 Overburden bit
WO2017078311A1 (en) * 2015-11-02 2017-05-11 (주)씨엔피텍 Excavation bit
KR101926596B1 (en) 2018-07-25 2018-12-11 재영티에스(주) Excavation Bit
KR20200019365A (en) * 2018-08-14 2020-02-24 심재홍 Bumpy hole extention bits assembly and rock bolt construction method using bumpy hole

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002285778A (en) 2001-03-26 2002-10-03 Ueruman:Kk Excavator
KR20110102665A (en) * 2010-03-11 2011-09-19 (주)탑드릴 Extendable bit for excavation hammer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100685386B1 (en) * 2004-09-03 2007-02-22 임병덕 A drilling apparatus having in-line extending wings and driving method thereof
KR20090013095U (en) * 2008-06-18 2009-12-29 임병덕 Installation structure of fixing pin of pilot bit of drilling apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002285778A (en) 2001-03-26 2002-10-03 Ueruman:Kk Excavator
KR20110102665A (en) * 2010-03-11 2011-09-19 (주)탑드릴 Extendable bit for excavation hammer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524355B1 (en) * 2013-07-04 2015-06-04 이광익 Tunnel grouting reinforcement method
KR20150110996A (en) * 2014-03-24 2015-10-05 (주)씨엔피텍 Drilling bit
KR101665346B1 (en) 2014-03-24 2016-10-14 (주)씨엔피텍 Drilling bit
KR101549401B1 (en) 2014-04-22 2015-09-08 안동대학교 산학협력단 Drilling bit for supporting tunnel using expansion type multi wing bit
KR20160033478A (en) * 2014-09-18 2016-03-28 창신인터내셔날 주식회사 Overburden bit
KR101629301B1 (en) * 2014-09-18 2016-06-10 창신인터내셔날 주식회사 Overburden bit
WO2017078311A1 (en) * 2015-11-02 2017-05-11 (주)씨엔피텍 Excavation bit
KR101926596B1 (en) 2018-07-25 2018-12-11 재영티에스(주) Excavation Bit
KR20200019365A (en) * 2018-08-14 2020-02-24 심재홍 Bumpy hole extention bits assembly and rock bolt construction method using bumpy hole
KR102110333B1 (en) * 2018-08-14 2020-05-13 심재홍 Bumpy hole extention bits assembly and rock bolt construction method using bumpy hole

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