KR20090028200A - Rock drilling device for performing the free surface in rock splitting - Google Patents

Abstract

A rock drilling device for forming a free surface in rock splitting is provided to drill slot-cut type bore holes continuously on the ground by using a plurality of button bits partly overlapped with each other. A rock drilling device for forming a free surface in rock splitting comprises a rotary head unit(110) connected to a boring machine, a plurality of drive motors(120) equipped as many as down hole hammers(140), a multi-shaft drill rod(130) driven by the drive motor, the down hole hammers rotating with the multi-shaft drill rod, and a plurality of button bits(150) which directly strike the site to be bored with the down hole hammer. The adjacent button bits have different height and are partly overlapped with each other when looking down.

Description

Rock drilling device for Performing the free Surface in rock Splitting}

The present invention relates to a rock drilling device that is used to form a free surface for increasing the efficiency of mechanical rock excavation in the field where blasting by the gunpowder is limited.

When installing a structure underground, if a rock appears at the location of the structure, the rock must be removed.

In order to remove the rock, the hole is crushed by drilling holes or explosives are used. However, when explosives are used, vibration damage is caused to surrounding buildings. Not only does the work take a long time, but the rock removal surface is not smooth, so it has to be rock-cut again to form a free surface.

In particular, there was a problem in that it is impossible to drill another hole in close proximity to the hole drilled in the rock with a drill.

In addition, conventionally, a plurality of holes are artificially drilled by using a device for forming a single punching hole in order to drill successive punching holes. Accordingly, in the process of connecting the plurality of holes in succession, there is a problem in that the perforation is made in a direction different from the desired direction or the perforation shape is crooked.

The present invention has been made to solve the above problems, an object of the present invention is to provide a rock mill factory value to be formed in succession of a drill hole of a slow cut (Slow cut) form.

In order to achieve the above object, the rock drilling plant according to the first embodiment of the present invention is connected to a drilling equipment (trailer) to drill a plurality of holes simultaneously in the vertical direction, so that a plurality of drilling holes are successively formed during the drilling. An apparatus, comprising: a rotary head portion configured to be connectable / detachable with the drilling equipment (trailer); A plurality of drive motors generating power and provided according to the number of down-hole hammers; A multi-axis drill rod connected to each of the plurality of drive motors and rotating by power generated from the drive motors; A down hole hammer connected to each of the multi-axis drill rods to rotate together with the rotation of the multi-axis drill rods, and acting as a piston so that the button bit strikes the drilled portion; And a button bit provided at a lower side of the down hole hammer to directly punch a portion to be punched, and including one button bit (a first button bit) and the first one of the plurality of button bits. Spaced apart up and down between the button bit and the neighboring second button bit, when viewed from the top, a part of the first button bit and the second butt bit is configured to overlap so that a plurality of perforated holes are successively formed. do.

In addition, the present invention in the rock drilling device according to the first embodiment of the present invention, a guide tube directly connected to the rotary head; A guide holder for maintaining a predetermined interval between the plurality of drill rods; And one side is connected to the guide tube, and the other side is inserted into the last hole of the previously drilled hole and entered into and out of the guide tube.

The button bit is characterized in that it comprises a circular body having an air hole in the center, and a plurality of bit tips provided on one side of the body.

In the present invention, one side of the guide rod is formed to be concave, characterized in that the friction with the button bit in the position closest to the guide rod during the work is characterized in that it is eliminated.

In order to achieve the above object, the rock drilling plant according to the second embodiment of the present invention is connected to a drilling equipment (trailer) to drill a plurality of holes simultaneously in the vertical direction, so that a plurality of drilling holes are successively formed during the drilling. An apparatus comprising: a body having guide rails formed on one side thereof; A plurality of driving motors formed on one side of the body to generate power and provided according to the number of drill bits; A plurality of core tubes connected to the plurality of drive motors and rotated by power generated from the drive motors; A drill bit positioned at a lower side of the core tube to make direct contact with a portion to be drilled; Lifting hydraulic cylinder to move the drive motor, the core tube and the drill bit up and down along the guide rail provided in the body; A leader selection cylinder configured to adjust the drilling angle by tilting the device including the core tube and the drill bit at a predetermined angle; Hydraulic cylinder for adjusting the spacing to maintain a constant spacing between the core tube; And after adjusting the interval between the core tube by the hydraulic cylinder for adjusting the spacing, and comprises a holder for fixing to maintain a constant interval between the tube, the drill bit is characterized in that the hollow bit.

In addition, the present invention is characterized in that the rock drilling device according to the second embodiment of the present invention, characterized in that it further comprises a horizontal adjustment cylinder provided on the lower side of the body to adjust the entire horizontal.

In addition, the present invention is characterized in that the interval between the drill bits is configured smaller than the diameter of one drill bit.

As described above, in the present invention, it is possible to form a drill hole having a slow cut shape in which drill holes are successively formed by providing rock drilling mills according to the first and second embodiments.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a rock drilling device according to a first embodiment of the present invention and the rock drilling using the device, Figure 2 is a rock drilling device and the device according to a first embodiment of the present invention This is a cross-sectional view that briefly shows the drilling of rock. 3A and 3B are perspective views of button buttons viewed from one side and the other side in FIG. 1.

Referring to the drawings, the rock mill mill according to the first embodiment of the present invention is a rotary head unit 110, a drive motor 120, a multi-axis drill rod 130, a down hole hammer (or 'punched' Hammer 140), and a button bit 150. As an example, in the rock drilling apparatus according to the first embodiment of the present invention, the driving motor 120, the drill rod 130, the downhole hammer (or also referred to as a 'drilling hammer') 140 except for the rotary head unit 110 (140). ), Three button bits 150 and the like are provided, respectively, and accordingly, in the present specification, they are referred to as first, second, and third. Of course, the number may be two or more, but three or more odd numbers are preferable. The reason for this is described below. Therefore, a description thereof will be omitted.

Rotary head 110 is made of a structure that can be connected / disconnected with the drilling equipment (trailer) (20).

The driving motor 120 generates power and is provided with a plurality (eg, three) according to the number of drilling hammers (or button bits). That is, the drive motor 120 provides power so that three button butts play their role. The power of the drive motor 120 is transmitted to the multi-axis drill rod (three drill rods, also referred to as 'three-axis drill rod') 130, and then down-hole hammer (or also referred to as 'punch hammer') 140 ) And finally to the button bit 150.

The three-axis drill rod 130 is connected to each of the plurality of drive motors 120 (eg, three), and rotates by the power generated by the drive motor 120.

The downhole hammer 140 is connected with three drill rods (three-axis drill rods) 130 to rotate together with the rotation of the three-axis drill rods, and the button bit 150 acts as a piston to strike the perforations. Do it.

The button bit 150 is provided at the lower side of the down hole hammer 140 to directly punch a portion to be punched.

As shown in FIGS. 3A and 3B, the button bit 150 has a circular body 150a having an air hole in the center 150b, and a plurality of buttons provided at one side of the body 150a. It includes a bit tip 150c to discharge the crushed stone (fine dust, etc.) to the outside using the air introduced through the air hole.

In the present invention, one button bit (first button bit) 151 of the plurality of button bits (150) provided is spaced up and down between the first button bit and the second button bit (152) neighboring, and lowered from the upper side As seen, a part of the first button bit 151 and the second butt bit 152 is configured to overlap. Accordingly, in the present invention, a plurality of perforated holes are successively formed in a slot cut shape (see FIG. 6). As described above, in the present invention, the number of the button bits is preferably three or more odd numbers. .

In addition, the rock drilling device according to the first embodiment of the present invention may further include a guide tube 161, a guide holder 163, and a guide rod 162.

One side of the guide tube 161 is directly connected to the rotary head 110, the other side is connected to the guide holder 162.

The guide holder 163 is connected to the guide tube 161 and maintains the drill rods 130 on the other side so as to maintain a predetermined interval between the drill rods 130.

One side of the guide rod 162 is connected to the guide tube 161, the other side of the guide rod 162 is inserted into the last hole (1c) of the previously drilled hole, one side of the guide rod 162 is a guide It goes into and out of the tube 161. As a result, as the button bit 150 punctures the rock 10 as shown in FIG. 5, the guide tube 161 also gradually descends along the guide rod 162.

As described above, in the rock drilling apparatus according to the first embodiment, three holes 1a, 1b, and 1c first drilled by further including a guide tube 161, a guide holder 163, and a guide rod 162. ) And the next three drilled holes (2a, 2b, 2c) can be maintained at a constant interval. That is, as shown in FIG. 6, a plurality of drill holes may be continuously formed in a slot cut shape with a predetermined pattern.

Figure 4a is a three-axis drill rod arrangement (BB 'cross-sectional view) in the rock drilling device according to the first embodiment of the present invention, Figure 4b is three buttons in the rock drilling device according to the first embodiment of the present invention The bits are viewed from below.

Referring to Figure 4a, in the rock drilling device according to the first embodiment of the present invention used a three-axis drill rod (131, 132, 133) consisting of three axes, to maintain a constant interval (k) between each drill rod Guide holder 163 described above was used.

In addition, referring to FIG. 4B, three button bits 151, 152, and 153 appear to overlap each other. However, this is the shape of three button bits viewed from the lower side. Referring to the front cross-sectional view of FIG. 2, the first button bit (first button bit) 151 and the third button bit (third button bit) 153 are second button bits ( Slightly below the second button bit 152). Three button bits 151, 152, and 153 placed in this state are gradually lowered by the respective driving motors 121, 122, and 123 at the same time to puncture the rock 10.

5 is a cross-sectional view showing the position of the guide tube and the guide rod as the depth of the drill hole in FIG.

Referring to FIG. 5, the positions of the guide tube 161 and the guide rod 162 according to the initial drilling, the middle drilling, and the end of the drilling are sequentially shown from left to right.

In the present invention, since the other side of the guide rod 162 is inserted into the last hole (for example, 1c) among the previously drilled holes, three button bits 151, 152, and 153 gradually drill the rock 10 and move down. Accordingly, the guide tube 161 is also lowered to the guide rod 162 side. At this time, the drill rods 130 are also lowered by the guide holder 163 in a state where the drill rods 130 are maintained at a constant interval in parallel.

6 is a cross-sectional view taken along the line A-A 'in the apparatus of FIG.

In the present invention, as mentioned above, the rock was punched using three button bits as an example. In FIG. 6, 1a, 1b, and 1c in which the first drilled hole (also referred to as 'first lead hole') is made of solid lines do. When the first drilling hole is formed, the guide rod is inserted into the third drilling hole 1c corresponding to the last of the previous drilling holes (first preceding hole), and then the apparatus of the present invention is operated to form the next second drilling hole. The second second hole (also referred to as a 'first follow-up hole') is 2a, 2b, and 2c formed in dotted lines in FIG. 6. The third drilled hole (also referred to as the 'second second hole') is 3a, 3b, 3c. If you continue to drill in this way, successive holes are formed, like slots.

The reason why the number of button bits is three or more odd numbers is as follows. That is, the guide rod is inserted into the third drilling hole 1c corresponding to the last of the first preceding holes. If the depth of the drilling hole into which the guide rod 162 is inserted is different each time (the number of button bits is an even number of guide rods) The depth of the drilled hole to be inserted is changed every time.) It is very inconvenient to operate the device of the present invention. In other words, in the present invention, the depth of the first drilling hole 1a and the depth of the third drilling hole 1c of the three drilling holes (for example, 1a, 1b, and 1c) are the same, and the depth of the second drilling hole 1b is the same. Since only the guide rod 162 is inserted into the last hole 2c of the first follow-up hole to form the second follow-up holes 3a, 3b, and 3c, the last hole 2c of the first follow-up hole 2c is inserted. Since the depth of) is equal to the depth of the last drilling hole 1c of the first preceding hole, it is not necessary to set a new depth every time the guide rod is to be inserted. In other words, when the number of button bits is even, the depth of the drill hole into which the guide rod is inserted is changed every time, which causes the user to have to correct (correct) each time (when the depth of the drill hole is changed).

FIG. 7 is a cross-sectional view taken along line D-D 'of FIG. 5, showing a guide tube and a guide rod simultaneously in the apparatus of FIG.

Referring to the drawings, in the present invention, it is preferable that one side of the guide rod is formed to be slightly concave, as shown in FIGS. 6 and 7. This is to eliminate mutual friction between the guide rod 162 and the first button bit 151 located closest to the guide rod during operation. Therefore, one side of the aforementioned guide rod 162 indicates a portion in contact with the first button bit 151.

Rock mill plant according to the first embodiment of the present invention having the structure as described above is preferably used in places where there is no civil complaints caused by noise generated during drilling or large-scale construction.

8 is a rock drilling device according to a second embodiment of the present invention.

Referring to the drawings, the rock mill factory according to the second embodiment of the present invention body 210, the drive motor 220, the core tube (Core tube) 230, the drill bit (240), lifting The hydraulic cylinder 251, the leader election (leader election) cylinder (252), the interval adjustment hydraulic cylinder 253, and a holder (Holder) (260) is included.

Body 210 is in the form of a tower, it is connected to a drilling equipment (trailer) (not shown), the guide rail is formed on one side.

Drive motor 220 is formed on one side of the body 210 to generate power, is provided to match the number of drill bits 240. As an example, in the rock drilling apparatus according to the second embodiment of the present invention, not only the driving motor 220 but also two core tubes 230 and drill bits 240 are provided, respectively. Is named second. Of course, three or more drive motors may be provided.

Two core tubes (first core tube, second core tube) 231, 232 are connected to the two driving motors (first driving motor, second driving motor) 221, 222, respectively, to drive Rotate by the power generated by the motor.

Drill bits (first drill bit, second drill bit) 241, 242 is located below the core tube (first core tube, second core tube) 231, 232 and the area to be drilled Direct contact is made to drill the rock.

Drill bits 241 and 242 used in the present invention are hollow bits. The drill bit will be described with reference to FIG. 9.

The distance between the first drill bit 241 and the second drill bit 242 should be smaller than the diameter of the first drill bit (or second drill bit). The reason is that after cutting the first preceding hole by using the first and second drill bits, and then drilling by shifting the position of the first and second drill bits to the left (or right) slightly when drilling the subsequent holes (Slot cut) This is because perforation is possible in the form of. Detailed description thereof will be made with reference to FIG. 10.

In the lifting hydraulic cylinder 251, the driving motor 220, the core tube 230, the drill bit 240, and the like are moved up and down along the guide rail provided in the body 210.

The leader selection cylinder 252 is a cylinder that adjusts the drilling angle by tilting the device including the core tube 230 and the drill bit 240 at a predetermined angle. In order to tilt the device including the core tube 230 and the drill bit 240 by the leader selection cylinder 252 at a predetermined angle, a hinge 255 is further provided.

The hydraulic cylinder 253 for adjusting the gap serves to keep the gap between the first core tube 231 and the second core tube 232 constant.

Holder 260 is a device for fixing so that a constant interval between the core tube 231, 232 is maintained after the interval adjustment between the core tube is made by the hydraulic cylinder for adjusting the gap 253, assists the hydraulic cylinder for adjusting the gap It is a device.

In addition, the present invention may further include a horizontal adjustment cylinder 254 provided on the lower side of the body 210 to adjust the entire horizontal.

Rock mill plant according to a second embodiment of the present invention having the above-described structure is preferably used in small-scale construction sites that may cause civil complaints due to noise and dust generated during drilling.

Reference numeral 271 denotes a wheel, 272 denotes a pad jack, and 273 denotes an engine unit for driving a drive motor.

In the present invention, by replacing the wheel with a small endless track can be equipped with a self-propelled equipment by the drive engine 273 to facilitate the position movement in the workplace.

FIG. 9 is a view of the drill bit in FIG. 8 viewed from below. FIG.

Referring to the drawings, as described above, the drill bit 240 used in the rock drilling device according to the second embodiment of the present invention is a hollow (donut) bit. That is, the drill bit 240 of the present invention is generally circular, and the hollow portion in which the central portion 240a is drilled in one direction.

A plurality of blades 240b are formed on one side portion of the drill bit 240 instead of the center portion of the drill bit 240, or a circular blade 240b is formed. In the present invention, a diamond bit may be used instead of the blade.

When the rock is drilled using the hollow drill bit of the present invention, the core corresponding to the center portion of the drill bit is taken out using an appropriate lifting device.

FIG. 10 is a diagram illustrating a slot cut corresponding to the case of using the apparatus of FIG. 8.

When the initial drilling (preliminary drilling) is performed using the apparatus as shown in FIG. 8, holes (solid line notation) as shown in FIG. 10A are processed. Then, moving slightly to the right to drill the subsequent holes (dotted notation) results in a shape as shown in FIG. 10B. Finally, as shown in FIG. 10C, a slot cut shape is obtained.

As described above, with reference to the preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that it can be changed.

1 is a perspective view showing a rock drilling device according to a first embodiment of the present invention and drilling a rock using the device.

Figure 2 is a cross-sectional view showing a rock drilling device according to a first embodiment of the present invention and briefly showing a rock drilling using the device.

3A and 3B are perspective views of button buttons viewed from one side and the other side in FIG. 1.

Figure 4a is a three-axis drill rod arrangement (BB 'cross-sectional view) in the rock drilling device according to the first embodiment of the present invention, Figure 4b is three buttons in the rock drilling device according to the first embodiment of the present invention The bits are viewed from below.

5 is a cross-sectional view showing the position of the guide tube and the guide rod as the depth of the drill hole in FIG.

FIG. 6 is a cross-sectional view taken along line A-A 'in the apparatus of FIG. 1, showing a slot cut when the rock is perforated to some extent (corresponding to the middle figure of FIG. 5).

FIG. 7 is a cross-sectional view taken along line D-D 'of FIG. 5, showing a guide tube and a guide rod simultaneously in the apparatus of FIG.

8 is a rock drilling device according to a second embodiment of the present invention.

FIG. 9 is a view of the drill bit in FIG. 8 viewed from below. FIG.

FIG. 10 is a diagram illustrating a slot cut corresponding to the case of using the apparatus of FIG. 8.

<Description of the symbols for the main parts of the drawings>

10: Drilling part (eg rock) 20: Drilling equipment (trailer)

30: vertical hole excavation surface 110: rotary head

120: drive motor 130: three-axis drill rod

140: down hole hammer (punch hammer) 150: button beat

150a: button bit body 150b: center portion

150c: bit tip 161: guide tube

162: guide rod 163: guide holder

1a, 1b, 1c: First preceding hole 2a, 2b, 2c: First subsequent hole

3a, 3b, 3c: third subsequent hole 210: body

220: drive motor 230: core tube

240: drill bit 240a: blade

240b: center portion 251: lifting hydraulic cylinder

252: leader selection cylinder 253: hydraulic cylinder for adjusting the gap

254: cylinder for leveling 260: holder

Claims (7)

As a rock drilling device connected to the drilling equipment (trailer) to drill a plurality of holes at the same time in the vertical direction at the same time, so that a plurality of drilling holes are successively formed during the drilling, A rotary head part configured to be connectable / removable with the drilling equipment (trailer); A plurality of drive motors generating power and provided according to the number of down-hole hammers; A multi-axis drill rod connected to each of the plurality of drive motors and rotating by power generated from the drive motors; A down hole hammer connected to each of the multi-axis drill rods to rotate together with the rotation of the multi-axis drill rods, and acting as a piston so that the button bit strikes the drilled portion; And And a button bit provided at a lower side of the down hole hammer to directly punch a portion to be punched. One button bit (first button bit) of the plurality of button bits provided and a plurality of spaced apart up and down between the first button bit and the second button bit neighboring, when viewed from above, the first button bit and the second butt A rock drilling device, characterized in that the part is overlapped with each other so that a plurality of holes are formed successively. The method of claim 1, A guide tube directly connected to the rotary head; A guide holder for maintaining a predetermined interval between the plurality of drill rods; And One side is connected with the guide tube, the other side is inserted into the last hole of the previously drilled guide rod which enters and exits into the guide tube; rock drilling device comprising a constant interval between the drill holes further comprising. The method according to claim 1 or 2, The button bit, Rock drilling device, characterized in that it comprises a circular body having an air hole in the center, and a plurality of bit tips provided on one side of the body. The method of claim 1, Forming one side of the guide rod concave, rock drilling device, characterized in that to eliminate friction with the button bit in the position closest to the guide rod during operation. As a rock drilling device connected to the drilling equipment (trailer) to drill a plurality of holes at the same time in the vertical direction at the same time, so that a plurality of drilling holes are successively formed during the drilling, A body formed with a guide rail on one side; A plurality of driving motors formed on one side of the body to generate power and provided according to the number of drill bits; A plurality of core tubes connected to the plurality of drive motors and rotated by power generated from the drive motors; A drill bit positioned at a lower side of the core tube to make direct contact with a portion to be drilled; Lifting hydraulic cylinder to move the drive motor, the core tube and the drill bit up and down along the guide rail provided in the body; A leader selection cylinder configured to adjust the drilling angle by tilting the device including the core tube and the drill bit at a predetermined angle; Hydraulic cylinder for adjusting the spacing to maintain a constant spacing between the core tube; And After the interval adjustment between the core tube is made by the hydraulic cylinder for adjusting the gap, and comprises a holder for fixing to maintain a constant interval between the tubes, Rock drilling device, characterized in that the drill bit is a hollow bit. The method of claim 5, It is provided on the lower side of the body rock drilling device characterized in that it further comprises a horizontal adjustment cylinder for adjusting the horizontal. The method of claim 5 or 6, Rock drilling device, characterized in that the interval between the drill bit is configured smaller than the diameter of one drill bit.

Images