KR101907790B1 - Sheet file mounting type Auger drill machine and drilling method using the same - Google Patents

Abstract

The present invention relates to a sheet pile mounting type auger drill device, and a drilling method using the same. More specifically, in installation of a sheet pile to a soft rock layer, a granite layer, and a boulder layer, a sheet pile can be mounted in the outside of a steel pipe forming a casing by using a clamp unit in order to perform a drilling work using a hammer bit and stably install a sheet pile. To this end, the present invention comprises: a casing shoe fixated to a lower end part of the casing through a welding method; a first clamp unit fixating the sheet pile to support load; and a second clamp unit supporting the sheet pile to prevent the sheet pile from being separated.

Description

Technical Field [0001] The present invention relates to a sheet file mounting type auger drilling apparatus and a drilling method using the same,

The present invention relates to a sheet pile-mounted auger drilling apparatus and a drilling method using the sheet pile. More particularly, the present invention relates to a sheet pile- The present invention relates to a sheet pile-mounted auger drill apparatus and a punching method using the same, which can stably install a sheet file at the same time as a drilling operation using a hammer bit.

In general, various types of retention methods are implemented for construction work or civil engineering work to prevent soil from flowing down or collapsing the ground, or for hand car work.

Among these methods, there are cast-in-place-pile (CIP) method, H pile wall method, SCW (Soil Cement Wall) method and SCW (SOIL CEMENT WALL) A method of achieving the retention function at the same time is a sheet-pile method.

Generally, a sheet file (steel sheet pile) method is a method in which a sheet pile is directly inserted into a ground with a vibration hammer using a crane. When a sheet pile having excellent strength and durability is used, And the watertightness of the contact part is excellent, so that the order effect can be obtained.

In addition, since the sheet file can be pulled out and reused after completion of construction, it is excellent in economic efficiency and construction, and is widely used in domestic and abroad.

The sheet file method is a method of striking and embedding a sheet file by using a vibrating hammer. As shown in FIG. 1, a commonly known sheet file 10 is arranged alternately around a virtual installation line, And inserted into the ground.

It is general that a joint ears are formed at both ends of the sheet file 10 so that adjacent sheet files can be maintained in a connected state.

However, it is difficult to install the sheet pile only by hitting by the vibrating hammer in areas where the ground is hard, such as soft rock, granite, or omnidirectional layer. In order to install the sheet pile 10 in such a terrain, And then replacing the perforated area with sand, and then installing the sheet pile.

In other words, in order to obtain a stronger supporting force, the sheet pile can be buried to the rock portion through the overlapped punch using a vibration hammer in a state where a plurality of punch holes are punched to overlap the rock portion by using an auger drilling device .

However, in order to install a sheet file in a region where the ground is hard as described above, three or more troublesome processes are required to install one sheet file, which causes a time loss and slows down the construction air.

Accordingly, there is a need for a method of installing a sheet file and an apparatus for performing the method to reduce the number of possible processes and reduce time loss.

Meanwhile, the hammer bit of the auger drilling machine, which is usually drilled in the ground, is inserted into the steel pipe forming the casing at the time of excavation in the ground, exposed to the lower end of the steel pipe and then drilled in a hole wider than the casing diameter while rotating. Upon termination, it is lifted again for the recovery of the hammer bit.

In the conventional hammer bit, an external force is applied from a vibrating and rotating hammer drill, and the housing bit of the hammer bit rotates in a clockwise direction. At this time, the hammer bit is folded inward smaller than the outer diameter of the housing bit, And a wing bit for forming a wider bit larger than the outer diameter of the wing bit.

The inventor of the present invention has found that, in the structure of such a hamburger bit, when excavating a ground, it is possible to easily and practically drill holes including perforations and wing bits using a housing bit (Patent Document 1), (Patent Document 2) 3) have proposed improved hammer bits.

The present invention intends to provide an apparatus capable of installing a sheet file at the same time as a drilling operation by using an auger drilling apparatus having a hammer bit of the above Patent Documents 1 to 3.

Korean Registered Patent No. 10-0871127 (Registered on Nov. 24, 2008) Korean Registered Patent No. 10-1229209 (registered on January 28, 2013) Korean Registered Patent No. 10-1433453 (Registered on Aug. 18, 2014)

The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a sheet pile in a soft stone, a granite, And an object of the present invention is to provide a sheet pile-mounted auger drilling apparatus and a drilling method using the same.

In order to accomplish the above object, there is provided a sheet pile-mounted auger drilling apparatus and drilling method using the same, which comprises a drill rod and an air hammer connected to an auger for installing a sheet pile, And a hammer bit having a wing bit which is inserted into a housing bit protruding from a lower end of the casing so as to be interlocked with the guide device, and which has a wing bit to increase or decrease an outer diameter of the hole.

A casing shoe provided to surround the housing bit and fixed to the lower end of the casing by welding; A first clamp unit for fixing the sheet file at one side of the upper portion of the casing to prevent the sheet file from being separated while supporting the load; And a second clamp portion for supporting the sheet file so as not to be detached from the lower side of the casing.

At this time, the first clamp portion has a first fitting groove formed to pass through one side of the upper portion of the sheet pile and a second fitting groove formed to penetrate the upper side of the casing corresponding to the first fitting groove, And a clamp pin inserted through the second fitting groove to fix and support the sheet pile.

According to an embodiment of the present invention, the second clamp portion may be formed by forming a clamp groove on one side of the casing shoe, forming a release preventing hole in correspondence with the clamp groove on one side of the lower portion of the sheet pile, And a wedge clamp which is fitted in and separated from the release preventing hole.

Preferably, the upper end of the wedge clamp forms an inclined surface having an inclination from the inward upward direction to the outward downward direction.

On the other hand, if necessary, the clamp groove is formed horizontally on the casing shoe or formed in such a manner as to have an inclination angle from the upper side to the outer side.

Preferably, the upper inner circumferential surface of the release preventing hole is located in contact with one side of the upper surface of the wedge clamp when the sheet pile is fixedly supported by the first clamping portion.

On the other hand, as another embodiment, the second clamp portion may include a clamping groove formed on one side of the casing shoe, a hook-type clamp having one end hingedly rotatable on the clamping groove and a hooking jaw on the other end, And an elastic member provided inside the clamp groove to rotate the hook type clamp by a hinge by elasticity.

The drilling method using the seat file mounting type auger drilling apparatus includes a step of fixing the lower end portion of the casing to the upper portion of the casing shoe by welding and installing the hammer bit vertically to the ground position where the drilling is to be formed; A sheet pile mounting step of fixing the sheet pile to the upper part of the casing while supporting the load using the first clamp part and mounting the sheet pile to the lower part of the casing so as to be supported by the second clamp part; A drilling and sheet file installation step of drilling the ground and simultaneously transferring the installed sheet file to a set depth by rotating the hammer bit 140 in one direction to form a perforation up to a set depth; The first clamp part is released from the fixation of the first clamp part so that the upper part of the sheet file 10 is in a free state and the sheet file is automatically released by pressing the second clamp part by the load, A file seating step; And recovering the auger drilling device including the casing to the outside of the ground.

As described above, the sheet pile-mounted auger drilling apparatus and drilling method using the sheet pile according to the present invention can perform the integral method in which the punching operation is performed on the ground and the sheet pile is constructed, thereby reducing the construction cost, It has the effect of being able to.

Further, by using the first clamp portion and the second clamp portion, it is possible to attach the sheet file to the casing and easily detach it, thereby preventing the sheet file from shaking during the drilling operation and stably installing the sheet file, It has the effect of being able to.

1 is a view showing a sheet file used in a general sheet-pile method.
2 and 3 are schematic views showing a sheet pile-mounted auger drilling apparatus according to the present invention.
4 and 5 are views showing an embodiment of a second clamp unit applied to a sheet pile-mounted auger drilling apparatus according to the present invention.
6 is a schematic view showing installation of a sheet pile according to a punching method using a sheet pile-mounting auger drilling apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a sheet pile-mounted auger drilling apparatus and a drilling method using the same according to the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, it is assumed that the lower part and the lower part indicate the part or the direction of the part positioned on the ground during the operation of the auger drilling machine, and the upper part and the upper part indicate the opposite part or the direction thereof do.

The central portion or the inner portion indicates a portion near or in the vicinity of the central axis of the rotating auger drill, and the outer portion indicates a portion that is away from the central axis or a direction thereof.

In describing the present invention, a detailed description of known functions or configurations related to the disclosed hammer bit disclosed in (Patent Document 1) to (Patent Document 3) is omitted in order to avoid obscuring the gist of the present invention .

2 and 3, a sheet pile-mounting auger drilling machine 100 according to the present invention is constructed such that a sheet pile 10 is sandwiched between a ground G (H) point formed in the center of the hole.

The auger drilling machine 100 of the sheet pile loading type is installed in an auger 4 provided on a guide 3 having a normal crane 2 and a rail and a drill rod 110 connected to the auger 4, And an air hammer 120 which is inserted into and protruded from a lower portion of the casing 160 so as to be interlocked with the guide device 130, And a hammer bit 140 having a bit 140b.

Such a structure is a known structure applied to a conventional auger drilling machine 100, and a detailed description thereof will be omitted in order to avoid obscuring the gist of the present invention.

The auger drilling machine 100 of the sheet pile-mounting type according to the present invention mainly includes the casing shoe 150 and the first clamp part 170 and the second shank part 170 to stably install the sheet pile 10 at the same time as the punching operation. And a clamp unit 180.

Specifically, the casing shoe 150 is configured to surround the housing bit 140a of the hammer bit 140. The casing shoe 150 has a lower end portion of the casing 160, Or one side is integrated by welding.

The casing 160 includes a discharge opening 162 formed at the upper end of the casing 160 so as to be able to move up along the casing 160 and be discharged to the outside.

Since the casing 160 is integrally formed on the upper portion of the casing shoe 150, the casing 160 is integrally formed with the auger drilling machine 100 and is transported together after the punching operation to perform the next punching operation.

In order to stably fix the seat pile 10, the seat pile 10 is supported on the upper part of the casing 160 by supporting a load on the seat pile 10 The first clamping unit 170 is provided to prevent the detachment.

Preferably, the sheet pile 10 is fixed to abut one side of the outer surface of the casing.

3, the first clamp unit 170 is used to attach the sheet pile 10 to the outer surface of the casing 160 of the auger drilling apparatus 100 before performing the punching operation. Referring to FIG. 3, .

The clamp pin 171 is used to integrally mount or completely separate the sheet pile 10 from the casing 160 according to the operator's selection. In this case, the clamp pin 171 is fitted in a simple pin- It is inserted into the groove or completely separated and separated.

However, in another embodiment, such a clamp pin 171 may be connected to an external power unit using a hydraulic or pneumatic cylinder, if necessary, so that the clamp pin 171 can be repeatedly inserted into or separated from the fitting groove by an external force to be.

Referring to FIG. 3, one embodiment of the first clamping unit 170 will be described in detail.

The first clamp portion 170 includes a first fitting groove 11 formed to penetrate one side of the upper portion of the seat pile 10 and a second fitting groove 11 formed in the casing 160 And a sheet pile 10 having a load inserted through the first fitting groove 11 and the second fitting groove 161 is fixed and supported by the first fitting groove 11 and the second fitting groove 161. The second fitting groove 161 is formed through the first fitting groove 11 and the second fitting groove 161, And a clamp pin 171 which clamps the clamp pin 171.

The first fitting groove 11 and the second fitting groove 161 are not limited in size and shape so long as the clamp pin 171 penetrates and the sheet pile 10 can be fixed.

In addition, a plurality of first clamp portions 170 are formed as necessary.

On the other hand, the sheet pile-mounting auger drilling machine 100 according to the present invention minimizes the impact received by the sheet pile 10 mounted on the casing 160 due to the shaking generated during the punching operation, A second clamp unit 180 is further provided on one side of the lower portion of the casing 160.

Specifically, an embodiment of the second clamp unit 180 will be described with reference to FIGS. 4 (a), 4 (b) and 5.

4 (a) and 4 (b), the second clamp unit 180 includes a clamp groove 151 having a depth at one side of the casing shoe 150, The clamping groove 151 is formed at one side of the lower side of the pile 10 with a release preventing hole 12 corresponding to the clamp groove 151. The elastic member 182 provided in the clamp groove 151 And the wedge clamps 181 and 181 'that come and go according to the shape and fit into the release preventing hole 12.

At this time, the elastic member 182 is preferably a compression spring, and pushes the wedge clamps 181 and 181 'outward so that the ends of the wedge clamps 181 and 181' fit into the escape prevention hole 12.

Meanwhile, the clamp groove 151 is formed horizontally as shown in Fig. 4 (a) or formed to have an inclination angle from the upper side to the outer side downward as shown in Fig. 4 (b).

The outer ends of the wedge clamps 181 and 181 ', which are preferably inserted into the release preventing holes 12, have inclined surfaces 181a and 181'a whose upper surfaces have inclination from the inner upward direction to the outer downward direction.

The inner circumferential surface of the sheet pile 10 on the upper side of the release preventing hole 12 is formed in the inner peripheral surface of the wedge clamps 181 and 181 'when the sheet pile 10 is fixedly supported by the first clamping unit 170, And is preferably positioned to abut one side of the upper surface of the slant surface 181a, 181'a.

The sheet pile 10 is prevented from being strayed from the casing 160 stably due to frictional force generated during excavation work for forming the perforations due to the portion where the departure prevention hole 12 and the wedge clamp 181 abut Maintain position.

When the sheet pile 10 is separated from the casing 160 by releasing the first clamp unit 170 after completion of the punching operation, the sheet pile 10 is pushed to the bottom surface H As it is located, the load is generated downward.

According to the load applied to the sheet pile 10 by the downward movement of the seat pile 10, the escape prevention hole 12 presses the upper surface of the wedge clamps 181 and 181 ', preferably the inclined surfaces 181a and 181'a, The wedge clamps 181 and 181 'of the clamp part 180 automatically push the elastic force of the elastic member 182 provided in the clamp groove 151 to the inside.

The second clamping unit 180 is released and the sheet pile 10 is installed.

5, the second clamp unit 180 includes a clamp groove 151 'formed at one side of the casing shoe 150, and one end of the clamp groove 151' And a hook type clamp 183 provided inside the clamp groove 151 'to form a hook-like clamp 183 at the other end so that the lower end of the sheet pile 10 is covered with the hook- And an elastic member 184 for rotating the hinge by elasticity.

According to this structure, the hook-shaped clamp 183 of the second clamping unit 180 is hinged to the position for always supporting the lower end of the sheet pile 10 by the elastic force of the elastic member 184.

In other words, when the sheet pile 10 is fixed and supported by the first clamping unit 170, the lower end of the sheet pile 10 is hooked on the hooking pawl 183a of the hook type clamp 183 The hook-shaped clamp 183 is hinged to the inside due to the elastic force of the elastic member 184 according to the load of the seat pile 10 when the first clamp unit 170 is released, It is released from the clamping portion 180 and stably installed.

The second clamp unit 180 shown in Figs. 4A and 4B and the first clamp unit 170 fixedly supporting the upper portion of the sheet pile 10 according to the shape and structure of the second clamp unit 180, Thereby supporting the lower portion of the sheet pile 10 and preventing the sheet pile 10 from being shaken by an external force.

The second clamp portion 180 is automatically released according to the load of the sheet pile 10 generated in the downward direction due to the cancellation of the first clamp portion 170, It is not disturbed in the recovery of the device 100.

Needless to say, as in the case of the first clamping unit 170, the second clamping unit 180 may also be formed as many as necessary.

Next, with reference to FIG. 6, a drilling operation using the seat-mounted auger drilling machine 100 according to the present invention and a process of installing the seat pile 10 will be described in detail.

As shown in FIG. 6A, the auger drilling apparatus 100 according to the present invention performs a drilling operation in a state where the sheet pile 10 is mounted so as to be in contact with the casing 160.

The upper portion is fixedly supported on the upper portion of the casing 160 by the first clamping unit 170 and the lower portion is supported by the second clamping unit 180 so as not to be detached from the lower portion of the casing 160.

Then, the auger drilling machine 100 forms the puncturing point H while moving in the downward direction C while drilling the ground G according to the operation.

6 (b), after completion of the punching operation, the clamp pin 171 of the first clamping portion 170 is released and the sheet pile 10 is seated according to the load.

At this time, the wedge clamps 181 and 181 'or the hook-shaped clamp 183 of the second clamping unit 180 in accordance with the downward load of the seat pile 10 will overcome the elastic forces of the elastic members 182 and 184 The sheet file 10 is released.

6 (c), the auger drilling machine 100 is transferred to the upper portion and removed again, and the sheet file 10 is transferred to the first clamp portion 170 and the second And then mounted on the casing 160 by using the clamp unit 180, followed by a subsequent drilling operation.

More specifically, the punching method using the auger drill apparatus for a sheet pile-mounting type according to the present invention includes steps of preparing a sheet file to be installed at the same time as a punching operation, mounting a sheet pile, Step and a recovery step.

First, in the preparation step, the lower end of the casing 160 is welded to the upper portion of the casing shoe 150, and the hammer bit 140 is installed perpendicularly to the ground position where the hole H is to be formed.

In the sheet file attaching step, the sheet file 10 is fixed to the upper portion of the casing 160 while supporting the load by using the first clamp unit 170, and the second clamp unit 170 is fixed to the lower portion of the casing 160, (180).

Further, in the drilling and sheet file setting step, the hammer bit 140 is rotated in one direction to form a perforation (H) up to a set depth, and the ground is excavated, and at the same time, .

Then, the sheet pile seating step releases the fixing of the first clamping unit 170 so that the upper portion of the sheet pile 10 is in a free state, and at the same time, The first clamp unit 180 is automatically released by pressing the second clamp unit 180 to seat the sheet pile 10 at the installation position.

Then, the auger drilling apparatus including the casing is recovered to the outside of the ground according to the recovery step.

The sheet pile 10 is installed while repeating the above-described punching method.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is not.

10: sheet file 11: first fitting groove
12: Breakaway ball
100: auger drill unit with sheet file
140: hammer bit 150: casing shoe
151, 151 ': clamp groove 160: casing
161: second fitting groove 170: first clamping part
171: clamp pin 180: second clamp part
181, 181 ': Wedge clamps 182, 184:
183: hook type clamp 183a:

Claims (7)

A housing for housing the seat file and including a drill rod and an air hammer connected to the auger and protruding from a lower end of the casing for interlocking with the guide device, And a hammer bit (140) having a wing bit (140b) entering and exiting from the bit (140a) and increasing or decreasing the outer diameter of the hole (H)
A casing shoe 150 provided to surround the housing bit 140a and fixed to the lower end of the casing 160 by welding; A first clamp unit 170 which fixes the sheet pile 10 on one side of the casing 160 to prevent a load from being released while supporting the load; And a second clamp unit (180) for supporting the sheet pile (10) so that the sheet pile (10) is not detached from the lower side of the casing (160).
The second clamping unit 180 includes:
A clamp groove 151 having a depth is formed at one side of the casing shoe 150 and an escape prevention hole 12 is formed at a lower side of the sheet pile 10 in correspondence with the clamp groove 151, And a wedge clamp (181, 181 ') which protrudes outward by an elastic member (182) provided in the clamp groove (151) and is inserted and positioned in the release preventing hole (12) Mounted auger drill unit.
The method according to claim 1,
The first clamping unit 170 includes:
A first fitting groove 11 formed to penetrate one side of the upper portion of the seat 10 and a second fitting groove 11 formed to penetrate the upper side of the casing 160 in correspondence with the first fitting groove 11, (161)
And a clamp pin (171) inserted through the first fitting groove (11) and the second fitting groove (161) to fix the seat pile (10) and to support a load. Device.
delete The method according to claim 1,
Wherein the clamp groove (151) is formed horizontally in the casing shoe (150) or formed so as to have an inclination angle from the upper side to the outer side downwardly of the casing shoe (150).
5. The method of claim 4,
The upper side inner circumferential surface of the release preventing hole 12 is located in contact with one side of the upper surface of the wedge clamp 181, 181 'when the sheet pile 10 is fixed by the first clamping portion 170 The auger drill unit with a sheet padding is characterized by the following features.
A housing for housing the seat file and including a drill rod and an air hammer connected to the auger and protruding from a lower end of the casing for interlocking with the guide device, And a hammer bit (140) having a wing bit (140b) entering and exiting from the bit (140a) and increasing or decreasing the outer diameter of the hole (H)
A casing shoe 150 provided to surround the housing bit 140a and fixed to the lower end of the casing 160 by welding; A first clamp unit 170 which fixes the sheet pile 10 on one side of the casing 160 to prevent a load from being released while supporting the load; And a second clamp unit (180) for supporting the sheet pile (10) so that the sheet pile (10) is not detached from the lower side of the casing (160).
The second clamping unit 180 includes:
A clamp groove 151 'having a depth is formed at one side of the casing shoe 150,
A hook type clamp 183 having one end hingedly rotatable in the clamp groove 151 'and a hooking step 183a formed at the other end so that the lower end of the sheet pile 10 is wound,
And an elastic member (184) provided inside the clamp groove (151 ') for hinging the hook type clamp (183) by elasticity.
A sheet pile-mounting auger drilling apparatus according to any one of claims 1, 2, and 4 to 6,
Fixing the lower end of the casing 160 to the upper portion of the casing shoe 150 by welding and installing the hammer bit 140 vertically to the ground position where the hole H is to be formed;
The sheet file 10 is fixed to the upper portion of the casing 160 while supporting the load using the first clamp unit 170 and supported by the second clamp unit 180 at the lower portion of the casing 160 A sheet pile mounting step for mounting the sheet pile;
A drilling and sheet file installation step of drilling the ground and simultaneously transferring the installed sheet file 10 to a set depth by rotating the hammer bit 140 in one direction to form a hole H up to a predetermined depth;
The first clamp part 170 is released from the fixing of the upper part of the sheet pile 10 and the sheet pile 10 is pressed by the second pile part 180 by the load, A sheet pile seating step of automatically releasing the clamp portion 180 and seating the sheet pile 10 in the installation position;
And recovering the auger drilling device including the casing to the outside of the ground.

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