Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06J—PLEATING, KILTING OR GOFFERING TEXTILE FABRICS OR WEARING APPAREL
  • D06J1/00—Pleating, kilting or goffering textile fabrics or wearing apparel
  • D06J1/02—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed
  • D06J1/04—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed by co-operating ribbed or grooved rollers or belts
• • 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
  • E21B7/00—Special methods or apparatus for drilling
  • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
  • E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
  • D06C23/00—Making patterns or designs on fabrics
• • 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
  • E21B6/00—Drives for drilling with combined rotary and percussive action
• • 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
  • E21B7/00—Special methods or apparatus for drilling
  • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

• the present invention relates, in general, to auger boring machines used for boring holes in the ground and, more particularly, to an auger boring machine which uses a vibrator when performing auger boring work for boring a hole in the ground.
• an auger boring machine to be used for boring a hole in the ground has the following construction.
• the conventional auger boring machine includes an auger drive unit which is provided at an upper position thereof and rotates an auger for boring in the ground.
• the auger boring machine further includes a casing drive unit which is provided below the auger drive unit and rotates a casing.
• the casing When the auger is rotated by the auger drive unit, the casing is also rotated. At the same time, the auger and the casing are moved downwards together. Thereby, the auger boring machine bores in the ground using the rotating force and the weight of the auger and the casing. At this time, to ensure straightness of the boring work, the casing must be set such that the center thereof is precisely aligned with a desired position during the boring work.
• the conventional auger boring machine is disadvantageous in that the stability of the auger boring machine is compromised by the heavy casing drive unit which rotates the casing. To mitigate the above-mentioned problem, the auger boring machine must be increased in size.
• the conventional auger boring machine has a disadvantage in that, because the straightness of the hole to be bored depends on the alignment of the center of the casing, as the casing and the auger are advanced downwards, the straightness is decreased. As well, because the casing is reversely rotated when it is removed from the ground, reinforcements installed in concrete may be undesirably twisted.
• this auger boring machine 100 includes an auger 61, which is rotated by an auger drive unit 60 and thus bores a hole in the ground, a vibrator 70, which is mounted to a lower end of the auger drive unit 60 using a bolt 71, and a casing 80, which is coupled to a lower end of the vibrator 70.
• the auger 61 bores a hole in the ground and, simultaneously, the casing 80 coupled to the vibrator 70 bores the ground using vibrations transmitted from the vibrator 70.
• the auger drive unit 60 which rotates the auger 61
• the vibrator 70 which vibrates the casing 80
• the auger drive unit 60 must move downwards along with the auger 61 such that the casing 70 can also conduct the boring operation using vibrations transmitted from the vibrator 70 coupled to the auger drive unit 60.
• the auger drive unit 60 and the vibrator 70 which are integrated with each other, must be operated together.
• the depth to which the casing 80 using vibration can bore the ground along with the auger during a single process ranges from only 1 m to 1.5 m.
• an object of the present invention is to provide an auger boring machine, in which two relatively small vibrators, constituting a vibro- unit, are provided at opposite positions on an upper end of a casing without a separate casing drive unit, so that the machine is lighter than the conventional art thanks to the reduced weight of the vibro-unit and thanks to elimination of the casing drive unit, thus increasing the stability of boring work, and in which, because the auger and the casing, which are separated from each other, simultaneously conduct the boring operations, it becomes easy to discharge soil generated during the boring work, and in which a casing clamp coupled to the vibro-unit clamps the casing in a shape surrounding the circumferential outer surface of the casing, so that vibration of the vibro-unit is evenly transmitted to the entire casing, thereby the casing is prevented from undesirably moving in a lateral direction due to irregular vibrations, the straightness of the boring work is ensured, and the entire machine vibrates
• Another object of the present invention is to provide an auger boring machine, in which, because boring work of the casing using vibrations transmitted from the vibro- unit is conducted after auger boring work has started, the auger boring machine can form a deep hole in general ground as well as in soft ground, and in which, after the boring work has been completed, the casing is removed by vertical movement thereof while vibrating but not by rotation, thus having an effect of hardening the bored soft ground, and preventing reinforcements installed in concrete from twisting, thereby ensuring formation of a stable pillar, and in which the casing clamp, which is coupled to the vibro-unit mounted to the mounting plate, makes it possible to replace the casing with a new one having a different diameter without moving the vibro-unit, thus reducing the time required for the boring work of the casing and the auger, and in which, because casings having various diameters can be coupled to the casing clamp, although the auger boring machine has a relatively small size, it can bore a relatively large hole in the ground.
• the present invention provides an auger boring machine for boring in the ground, comprising: a guide unit, including a roller having a concave semi-circular cross-sectional outer surface and engaging with a guide provided in a leader of the auger boring machine, and a mounting plate having a plurality of mounting holes therethrough; a vibro-unit, including first and second vibrators mounted to the mounting plate, with a pulley provided on an upper end of each of the first and second vibrators, and a first coupling plate provided under lower ends of the first and second vibrators; a casing clamp, including a second coupling plate coupled to the first coupling plate of the vibro-unit, with a connection pin hole formed at a predetermined position in the second coupling plate, a movable clamping rod coupled at a first end thereof to a cylinder actuator and coupled at a second end thereof to the connection pin hole of the second coupling plate using a connection pin, with a first casing clamping liner provided on an inner surface
• an auger boring machine of the present invention two relatively small vibrators, constituting a vibro-unit, are provided at opposite positions on an upper end of a casing without a separate casing drive unit, so that the machine is lighter than the conventional art thanks to the reduced weight of the vibro-unit and thanks to elimination of the casing drive unit, thus increasing the stability of boring work.
• a casing clamp coupled to the vibro-unit clamps the casing in a shape surrounding the circumferential outer surface of the casing.
• vibrations of the vibro-unit are evenly transmitted to the entire casing, so that the casing is prevented from undesirably moving in a lateral direction due to irregular vibration, the straightness of the boring work is ensured, and vibrations of the entire machine are reduced.
• the auger boring machine can form a deep hole in general ground as well as in soft ground.
• the casing is removed by vertical movement thereof while vibrating but not by rotation, thus having an effect of hardening the bored soft ground, and preventing reinforcements installed in concrete from twisting, thereby ensuring formation of a stable pillar.
• FIG. 1 is a side view showing a conventional auger boring machine
• FIG. 2 is a side view of an auger boring machine having a vibrator, according to an embodiment of the present invention
• FlG. 3 is a front view of the auger boring machine of FlG. 2;
• FlG. 4 is a side view showing a vibro-unit of the auger boring machine of FlG. 2;
• FlG. 5 is an enlarged view showing a circled portion A of FlG. 4;
• FlG. 6 is a plan view showing a casing clamp of the auger boring machine according to the present invention.
• FlG. 7 a perspective view showing a guide unit of the auger boring machine according to the present invention.
• FlG. 8 is a view showing positions at which first and second vibrators of the vibro- unit are mounted to a mounting plate of the auger boring machine according to the present invention.
• FlG. 9 is a view showing operation of an auger and a casing of the auger boring machine during a boring process according to the present invention. Best Mode for Carrying Out the Invention
• FlG. 2 is a side view of an auger boring machine having a vibrator, according to an embodiment of the present invention.
• FlG. 3 is a front view of the auger boring machine of FlG. 2.
• FlG. 4 is a side view showing a vibro-unit 20 of the auger boring machine.
• FlG. 5 is an enlarged view showing a circled portion A of FlG. 4.
• FlG. 6 is a plan view showing a casing clamp 30 of the auger boring machine.
• FlG. 7 is a perspective view showing a guide unit 10 of the auger boring machine.
• FlG. 8 is a view showing positions at which first and second vibrators 23 and 24 of the vibro-unit 20 are mounted to a mounting plate 14 of the auger boring machine.
• FlG. 9 is a view showing the operation of an auger 40 and a casing 30 of the auger boring machine during a boring process.
• the guide unit 10 includes rollers 12, each of which has a concave semi-circular cross-sectional outer surface 11, and which rotatably contact guide rods 3 provided in a leader 2 of the auger boring machine, and the mounting plate 14, which has a plurality of mounting holes 13 so that the vibro-unit 20 is mounted to the mounting plate 14 through the mounting holes 13.
• the diameter of the concave semi-circular cross-sectional outer surface is the diameter of the concave semi-circular cross-sectional outer surface
• each roller 12 is the same as the diameter of each guide rod 3. Furthermore, the installation stability of the mounting plate 14 having the mounting holes 13 should be ensured such that the first and second vibrators 23 and 24 can be stably fastened to the mounting plate 14.
• the vibro-unit 20 includes the first and second vibrators 23 and 24, which are mounted to the mounting plate 14. Furthermore, each of the first and second vibrators 23 and 24 includes a pulley 21 on an upper end thereof. A first coupling plate 22 is provided under the lower ends of the first and second vibrators 23 and 24.
• the casing clamp 30 includes a second coupling plate 32, which is coupled at an upper end thereof to the first coupling plate 22 of the vibro-unit 20 and has two connection pin holes 31 therein, and two movable clamping rods 36, which are coupled at first ends thereof to a cylinder actuator 33 and coupled at second ends thereof to the respective connection pin holes 31, formed in the second coupling plate 32, by connection pins 34.
• Each movable clamping rod 36 has on an inner surface thereof a first casing clamping liner 35 with a predetermined curvature.
• the casing clamp 30 further includes a stationary clamping rod 38, which is coupled to the movable clamping rods 36 using the connection pins 34 and has on an inner surface thereof a second casing clamping liner 37 with a predetermined curvature.
• the casing 39 is clamped by combination of the stationary clamping rod 38 and the two movable clamping rods 36 which define a circular shape therein.
• the diameter of the circle defined by the first and second casing clamping liners 35 and 37 of the casing clamp 30 is adjustable such that casings having various diameters can be clamped by the casing clamp 30.
• the diameter of the circle defined by the first and second casing clamping liners 35 and 37 is set such that the casing clamp 30 clamps one of the casings 39, the difference in diameter between a maximum diameter casing 39 and a minimum diameter casing 39 being less than 10mm.
• the auger 40 is coupled to an auger drive unit 4 provided in the auger boring machine.
• a screw blade 41 is provided on the outer surface of the auger 40 and has a diameter determined so that the outer edge thereof is spaced apart from the inner surface of the casing 30 by a predetermined distance.
• the distance between the outer edge of the screw blade 41 of the auger 40 and the inner surface of the casing 30 range from 10 mm to 20 mm.
• the auger boring machine 50 having the vibrator is moved to a working area in which boring work is required.
• the casing 39 which is held by the casing clamp 30 coupled to the first and second vibrators 23 and 24, is slowly moved downwards to bore a hole in the ground along with the auger 40 using vibrations, which are evenly transmitted from the first and second vibrators 23 and 24 through the casing clamp 30.
• the operations of the auger 40 and the vibro-unit 20, which are separately provided, are performed simultaneously, but the auger 40 first bores a hole in ground while moving downwards, and the casing 39, coupled to the vibro-unit 20 through the casing clamp 30, thereafter bores the peripheral part of the hole formed in the ground by the operation of the auger 40.
• the range within which the peripheral part of the hole formed by the operation of the auger 40 changes into soft ground may differ depending on the density of the ground, but, typically, a peripheral part, which is within a range from 10 mm to 20 mm in the radial direction of the hole formed by the boring operation, is changed into soft ground. Then, the part of the ground changed into soft ground can be easily bored by the casing 39, which is coupled to the casing clamp 30 serving to evenly transmit vibration of the vibro-unit 20, under reduced resistance.
• the rollers 12 which have concave semi-circular cross-sectional outer surfaces 11 and move along the guide rod 3 of the leader 2 of the auger boring machine, make it possible for the casing 30 to maintain straight motion thereof while moving downwards to bore the hole the ground. Furthermore, the rollers 12 absorb some of the vibrations generated by the vibro-unit 20, thus ensuring stable boring operation of the auger boring machine.
• the movable clamping rods 36 having the first casing clamping liners 35 which have clamped the casing 39 using hydraulic pressure, are moved outwards, that is, in directions away from each other, thus releasing the casing 39.
• the two movable clamping rods 36 which are coupled to the cylinder actuator 33, are moved inwards, that is, in directions approaching each other, so that the casing 39 is reliably clamped both by the first casing clamping liners 35 of the movable clamping rods 36 and by the second casing clamping liner 37 of the stationary clamping rod 38.
• the first and second vibrators 23 and 24 of the vibro-unit 20 can maintain the state of being fastened to the mounting plate 14 regardless of a change in diameter of the casing 39. Therefore, the working time required for replacing the casing 39 and the auger 40 with new ones is reduced.
• the boring process is performed in the same manner as described above.
• the object of the present invention can be realized by repeatedly conducting the above-mentioned operation.
• the boring method of the present invention includes an auger and casing installation step of selecting a casing and an auger having diameters appropriate to conduct the boring work, mounting the auger to an auger drive unit, mounting the casing to a casing clamp coupled to the vibro-unit, and applying hydraulic pressure to a cylinder actuator provided in the casing clamp, so that the casing is clamped by the casing clamp.
• the boring method further includes an auger boring step of boring a hole in a ground by rotating the auger using the auger drive unit, and a casing boring step of boring soft ground, formed by the boring operation of the auger, using vibration of the casing coupled to the vibro-unit through the casing clamp.
• the casing boring step is conducted simultaneously with the auger boring step.
• the boring method further includes an auger removal step of reversely rotating the auger drive unit to remove the auger from the ground after the boring work has been completed, and a casing removal step of vibrating and moving the casing upwards to remove the casing from the ground during the removal of the auger, so that the soft ground is hardened by the vibration of the casing during the removal of the casing.
• an auger boring machine of the present invention two relatively small vibrators, constituting a vibro-unit, are provided at opposite positions on an upper end of a casing without a separate casing drive unit, so that the machine is lighter than the conventional art thanks to the reduced weight of the vibro-unit and thanks to elimination of the casing drive unit, thus increasing the stability of boring work. Furthermore, because the auger and the casing, which are separated from each other, simultaneously conduct the boring operations, it becomes easy to discharge soil dislodged during the boring work. Particularly, in the present invention, a casing clamp coupled to the vibro-unit clamps the casing in a shape surrounding the circumferential outer surface of the casing.
• vibrations of the vibro-unit are evenly transmitted to the entire casing, so that the casing is prevented from undesirably moving in a lateral direction due to irregular vibration, the straightness of the boring work is ensured, and vibrations of the entire machine are reduced.
• the auger boring machine can form a deep hole in general ground as well as in soft ground.
• the casing is removed by vertical movement thereof while vibrating but not by rotation, thus having an effect of hardening the bored soft ground, and preventing reinforcements installed in concrete from twisting, thereby ensuring formation of a stable pillar.
• the casing clamp coupled to the vibro-unit mounted to the mounting plate it is possible to replace the casing with a new one having a different diameter without moving the vibro-unit, thus reducing the time required for the boring work of the casing and the auger.
• casings having various diameters can be coupled to the casing clamp, although the auger boring machine has a relatively small size, it can bore a relatively large hole in the ground.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Textile Engineering (AREA)
• Earth Drilling (AREA)

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Citations (4)

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• 2006
  • 2006-02-15 KR KR1020060014556A patent/KR100626211B1/ko not_active IP Right Cessation
  • 2006-04-14 WO PCT/KR2006/001391 patent/WO2007094532A1/en active Application Filing

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