KR102082128B1 - Boring apparatus with multi core-drill and method for securing free surface usinf the same - Google Patents

Abstract

Boring device equipped with a multi-core core drill of the present invention is a core cylinder having a hollow cylindrical cylinder and a circular cutting edge crown at one end of the cylinder, a plurality of core drill is arranged in parallel, each crown The driving force is generated such that the head and each core drill coupled to be disposed on an imaginary circumference formed on the same plane are rotated about a rotation axis connecting the center of each cylinder, and a plurality of core drills are projected to the front of the head. It may include a transfer unit provided.
In addition, a method for securing a free surface for tunnel excavation using the above-described boring apparatus is disclosed.

Description

Boring device equipped with clustered multi-axis core drill and free surface securing method for tunnel excavation using the same {BORING APPARATUS WITH MULTI CORE-DRILL AND METHOD FOR SECURING FREE SURFACE USINF THE SAME}

The present invention relates to a boring device for forming a pre-drilling hole in the tunnel to be excavated to secure a free surface during the tunnel construction, more specifically, the multi-axial core drill arranged in parallel is arranged in a group to shorten the time for forming the pre-drilling hole The present invention relates to a boring device that enables continuous operation and a method for securing a free surface for tunnel excavation using the same.

In general, a variety of construction methods are performed to excavate the rock of the section to be constructed.

Such construction methods include universal blasting method, mechanical excavation method to improve the vibration or noise of the blasting method, vibrationless and noiseless excavation method using tunnel boring machine.

In these various excavation methods, the excavation of the tunnel with the large cross section cannot be performed at once, so after pre-excavating a part of the tunnel space to be excavated, the free space is secured through the pre-excaved space to facilitate the excavation. The expansion method is implemented.

In order to secure a free surface through pre-excavation, a method of forming a circular stiff diameter in the center of a tunnel to be excavated is widely practiced.A method for forming a stiff diameter is provided with a cutter at one end of a large circular cylinder and the cylinder is A rotating and forward tunnel boring machine was used.

In the method using the tunnel boring machine, a large diameter of a predetermined length or more is formed to operate a large sized tunnel boring machine, and a tunnel is formed by proceeding mechanical excavation, halving, etc. as long as the length of the large diameter is formed.

This method was disadvantageous in that the period of one to two days was administered and the cost was high to form one ancestor diameter.

In addition, the formation of the ancestor diameter through the tunnel boring machine is possible only in the center of the tunnel to be excavated, and there was a difficulty in halting and excavation due to the repulsive force of the ground in the process of expanding the ancestor diameter through the mechanical halve and the excavation equipment.

Therefore, a method for solving such problems is required.

The present invention has been made in order to solve the above-mentioned problems of the prior art, to provide a boring device that can form a pre-drilling hole quickly with a relatively small power by arranging a core drill capable of small-diameter drilling. .

In addition, the present invention provides a method for securing a free surface for more efficiently securing a free surface for tunneling by using the boring device.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

Boring device equipped with a group multi-axis core drill of the present invention for achieving the above object is a core cylinder having an inner hollow cylinder and a crown having a circular cutting edge at one end of the cylinder, a plurality of core drill in parallel A driving force is generated such that the head and each core drill coupled so as to be disposed on an imaginary circumference formed in the same plane are rotated about a rotation axis connecting the center of each cylinder, and a plurality of core drills It may include a transfer unit provided to protrude transfer to the front of the head.

Alternatively, the housing may include a core drill and the transfer unit, the head may be coupled to one side of the housing.

And, the housing may include a linkage provided to be coupled to the external equipment on one side.

Alternatively, the head may be rotatably coupled to the housing, rotated according to the operation of the swing motor, and the plurality of core drills may be rotated depending on the rotation of the head.

The housing may be provided to protrude toward the front of the head, and may include a pressing bar having a sharp end protruding toward the front of the head and a supporting cylinder which is operated to protrude and convey the pressure bar toward the front of the head. .

Or, the base is coupled to the other end of the plurality of core drill is included, the transfer unit may be connected to each of the plurality of core drill may include a drive motor and a transfer cylinder which is operated so that the base is reciprocated forward and backward transfer of the rotational force.

In addition, the core drill may be supplied with lubricating liquid through the cylinder inner space.

In addition, a free surface securing method for tunnel excavation using a boring device having a grouped multi-axial core drill is a free surface securing method using the above-described boring device, which is the first using a boring device on both sides of the lower end of the free surface of the tunnel to be excavated. The first multi-axis drilling step to form a shaft drilling tool, the second multi-axis drilling step to form a second multi-axis drilling tool by rotating a plurality of core drills provided in the boring device and the inside of the first multi-axis drilling tool and the second multi-axis drilling tool The core force removing step of removing the core force may be included to form a circular multi-axis drilling tool.

The circular multi-axis drilling tool may be formed to be inclined downward toward the outside of the tunnel to be excavated along the longitudinal direction of the tunnel to be excavated.

Boring device equipped with a group multi-axis core drill of the present invention for solving the above problems is a small diameter of the core drill is consumed less power, can form a pre-drilling hole in various positions of the free surface of the tunnel to be excavated There is an advantage, and there is an effect that can secure a pre-drilling hole in a relatively short time.

In addition, the method of securing a free surface for tunnel excavation using a boring device secures pre-drilling holes on both sides of the lower surface of the tunnel free surface to be excavated, thereby reducing the repulsion force from the rock and the excavation ground, and repeatedly constructing a short section. This reduces the idle time of the equipment, which shortens the air.

In addition, since a method of forming a plurality of small diameter drill holes and expanding them is used, the vibration or noise generated in the process of forming a prior art diameter is greatly reduced.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a state diagram showing a state in which a boring device according to an embodiment of the present invention is coupled to an excavator to form a circular multi-axis drilling tool.
2 is a perspective view of a boring apparatus according to an embodiment of the present invention.
Figure 3 is a perspective view showing a state in which the housing of the boring device according to an embodiment of the present invention is removed.
Figure 4 is a front view showing a state in which the housing of the boring device according to an embodiment of the present invention is removed.
5 is a perspective view showing a state in which a core drill of a boring device according to an embodiment of the present invention is connected to a driving motor.
Figure 6 is a perspective view showing a state in which the core drill of the boring device according to an embodiment of the present invention protrudes toward the front of the head.
Figure 7 is an exemplary view showing an example of forming a circular multi-axis drilling tool using a boring device according to an embodiment of the present invention.
Figure 8 is a state diagram showing the position where the circular multi-axis drilling tool is formed in the free surface securing method according to an embodiment of the present invention.
9 is a state diagram showing a state in which the first multi-axis drilling tool is punched in the free surface securing method according to an embodiment of the present invention.
FIG. 10 is a state diagram illustrating a state in which a second multi-axis drilling tool is drilled and a core force is fished in the free surface securing method according to an embodiment of the present invention.
11 is a state diagram showing a state in which a circular multi-axis drilling tool is formed in the free surface securing method according to an embodiment of the present invention.
12 is a state diagram illustrating a direction in which the circular multi-axis drilling tool is punched in the free surface securing method according to an embodiment of the present invention.
13 is a flowchart illustrating a free surface securing method according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of this embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted.

Boring device equipped with a multi-core core drill in accordance with the present invention can be implemented as follows.

1 is a state diagram showing a state in which a boring device according to an embodiment of the present invention is coupled to an excavator to form a circular multi-axis drilling tool, Figure 2 is a perspective view of a boring device according to an embodiment of the present invention, Figure 3 Figure 4 is a perspective view showing a state in which the housing of the boring device according to an embodiment of the present invention is removed, Figure 4 is a front view showing a state in which the housing of the boring device according to an embodiment of the present invention, Figure 5 is the present invention A perspective view showing a state in which a core drill of a boring device according to an embodiment of the present invention is connected to a driving motor, and FIG. 6 is a perspective view illustrating a state in which the core drill of the boring device according to an embodiment of the present invention protrudes toward the front of the head.

As shown in Figures 1 to 6, the boring device equipped with a grouped multi-axis core drill according to an embodiment of the present invention is circular cutting at one end of the cylinder 232 and the cylinder 232 of the hollow inside Core drill 230, which is provided with a stamping crown 234, a plurality of core drill 230 is arranged in parallel, each head 234 is coupled to be disposed on an imaginary circumference formed in the same plane ( 200 and each of the core drill 230 is a driving force is generated so as to rotate around the axis of rotation connecting the center of each cylinder 232, a plurality of core drill 230 is provided to protrude to the front of the head 200 The transfer unit 300 may be included.

Hereinafter, each configuration described above will be described in detail.

Boring device equipped with a multi-core core drill in accordance with the present invention is a device for forming a pre-drilling hole in the free surface of the tunnel during the excavation of the tunnel.

However, the present invention is not limited to the purpose of forming the pre-drilling hole when the tunnel is excavated, and may be used to form the excavation hole in various situations.

Clustered multi-axis core drill according to the present invention can be carried out coupled to the external equipment, as shown in Figure 1 is coupled to the boom (boom) of the excavator 10, the position is adjusted, supported by the excavator 10 Can be.

Boring device 20 can be divided into the housing 100, the head 200 and the transfer unit 300, the configuration largely,

A plurality of core drills 230 may be disposed in parallel inside the housing 100, and one end of the core drill 230 may protrude out of the head 200 coupled to the housing 100.

The housing 100 is a housing surrounding the outer side of the core drill 230 may be provided with a linkage 110 that can be coupled to external equipment such as an excavator 10 on one side of the outside.

The linkage 110 is formed to be coupled to external equipment through at least two fastening means such as bolts.

The supporter 120 may be provided in the housing 100.

The supporter 120 may include a pressing bar 122 protruding toward the front of the head 200 and a supporting cylinder 124 which is operated so that the pressing bar 122 is developed from the housing 100 to the front of the head 200. have.

At least one supporter 120 may be provided, and in one embodiment of the present invention, three supporters 120 are provided in the housing 100, and the head 200 is operated by the support cylinder 124, respectively. The pressure bar 122 may be provided to be forward or backward toward the front of the.

One end of the pressure bar 122 may be sharply developed toward the front of the head 200, and the supporting cylinder 124 may be provided to control the operation of the pressure bar 122 by hydraulic pressure. .

The supporter 120 is disposed so that the sharp end of the pressure bar 122 is in contact with the area to be excavated in front of the head 200, and at least a portion of the pressure bar 122 is inserted into the area to be excavated to provide a stable boring device. The 20 is operated to be supported.

The head 200 may be rotatably coupled to the housing 200.

2 to 6 in the embodiment of the present invention, the head 200 may be provided with a swing gear 220 having a thread formed on the outer circumference, the swing gear 220 is the housing 100 The head 200 may be provided to be engaged with the swing motor 210 coupled to the head 200 to rotate based on the rotation of the swing motor 210.

The head 200 rotated according to the rotation of the swing motor 210 is provided so that the core drill 230, which is partially protruded to the front of the head 200, is rotated together. To operate.

The core drill 230 may be formed of a cylindrical cylinder 232.

One end of the cylindrical cylinder 232 may be provided with a crown 234, which is a circular cutting edge, the crown 234 is provided in the shape of a crown as if the name, as the surface in contact with the rotation of the cylinder 232 It will work to make a circular incision.

One end provided with the crown 234 of the cylinder 232 may be disposed to protrude at least a part of the front of the head 200, and the driven gear 236 may be provided at the other end accommodated in the housing 100.

In addition, the core drill 230 is accommodated and disposed inside the housing 100, and a plurality of core drills 230 are arranged in parallel, each crown 234 protrudes to the front of the head 200, virtual in one plane Each crown 234 is arranged at regular intervals on the circumference of the to form a cluster.

This is as shown in Figures 2 to 6, in one embodiment of the present invention six core drill 230 may be arranged in a circular shape.

Each core drill 230 is spaced apart at regular intervals, it may be coupled to the base 310 in the inner space of the housing 100.

The plurality of core drills 230 may be coupled to the base 310 to move forward or backward in the longitudinal direction of the housing 100 according to the movement of the base 310, and ultimately, the core drill 230 may include the head 200. Protruding to the front of the length can be adjusted to be longer or shorter.

The transfer unit 300 may include a transfer cylinder 320 and a drive motor 330, and the drive motor 330 is operated to rotate the drive gear 332, and as shown in FIG. 5, the drive gear 332. As the driven gear 236 of the plurality of core drills 230 is rotated in accordance with the rotation of the core, each core drill 230 forms an imaginary straight line that is parallel to the cylinder 232 at the center of the cylinder 232. The rotary shaft is operated to rotate.

Each core drill 230 is rotated to make a circular incision in contact with the crown 234, the base 310 coupled with the transfer cylinder 320, the housing according to the forward or backward operation of the transfer cylinder 320 Forward or backward along the longitudinal direction of the (100), coupled to the base 310 is operated so that the length of the plurality of core drill 230 protruding to the front of the head 200 is lengthened or shortened.

Therefore, each core drill 230 is rotated by the rotation of the driving motor 330, and the front surface of the head 200 is operated through the operation of the transfer cylinder 320 while cutting the circular contact surface with the crown 234. Advance toward, enters the circular excavation target surface in a circular incision.

Boring device 20 according to an embodiment of the present invention through the configuration as described above is the supporter 120 is pressed to the excavation target surface is fixed position, each core drill 230 is rotated, The surface in contact with the crown 234 is cut in a circular shape, and the crown 234 of the plurality of core drills 230 enters the cutting target surface along the base 310 which is advanced by the transfer cylinder 320. An incision can be performed.

Then, the lubricant may be supplied toward the crown 234 through which the incision is performed through the inner space of the cylinder 232 of the core drill 230, and according to the embodiment to which the present invention is applied, the cylinder of the core drill 230 is applied. 232 may be implemented to recover the buoyancy fragments generated by cutting through the inner space.

Figure 7 is an exemplary view showing an example of forming a circular multi-axis drilling tool using a boring device according to an embodiment of the present invention.

As shown in Figure 7, after forming the first multi-axis drilling tool (h1) consisting of a solid line through the above operation, after the core drill 230 is reversed, the head 200 of the swing motor 210 By rotating by a certain angle through the operation, the arrangement of the plurality of core drill 230 is switched to the position of the second multi-axis drilling tool (h2) indicated by the dotted line to rotate the core drill 230 itself and to advance the base 310. It can be carried out again to form a circular hole to a certain depth.

At this time, the core force (c) of the central portion to be formed can be removed by a halve or excavation equipment to form a circular multi-axis drilling tool (h) is a circular drilling hole.

8 is a state diagram showing a position where a circular multi-axis drilling tool is formed in the free surface securing method according to an embodiment of the present invention, Figure 9 is a first multi-axis drilling tool in a free surface securing method according to an embodiment of the present invention 10 is a state diagram showing a perforated state, FIG. 10 is a state diagram showing a state in which a second multi-axis drilling tool is drilled and the core force is fished in the free surface securing method according to an embodiment of the present invention, and FIG. State diagram showing a state in which the circular multi-axis drilling tool is formed in the free surface securing method according to an embodiment, Figure 12 is a state diagram showing the direction in which the circular multi-axis drilling tool is punched in the free surface securing method according to an embodiment of the present invention 13 is a flowchart illustrating a free surface securing method according to an embodiment of the present invention.

A free surface securing method for tunnel excavation using a boring device equipped with a clustered multi-axis core drill as described above will be described.

As shown in Figure 8, the prior art circumferential diameter (o) is formed in the center of the tunnel to be excavated using a tunnel boring machine, etc., and formed through the administration of large equipment, so a process of a certain length or more should be performed.

However, it is advantageous in terms of cost or repeating the continuous process to secure the tunnel space through the mechanical halve and excavation by forming the pre-drilling holes having a relatively small diameter on both sides of the lower part of the tunnel.

The free surface securing method according to an embodiment of the present invention may be formed at various positions of the tunnel in which the circular multi-axis drilling tool h is excavated, as shown in FIG. 8, wherein the circular multi-axis drilling tool h is It is characterized in that it is formed on both sides of the lower portion of the tunnel to be excavated.

By arranging the boring device according to the present invention on both sides of the lower portion of the tunnel free surface to be excavated to form a circular multi-axis drilling tool (h), the sharp end of the pressure bar 122 is fixed to the free surface to be fixed to a certain depth, and driven A first multi-axis drilling step S10 for operating the motor 330 and the transfer cylinder 320 to form the first multi-axis drilling tool h1 shown in FIG. 9 may be included.

In addition, after the first multi-axis drilling tool (h1) is formed through the first multi-axis drilling step (S10), the advanced core drill 230 is reversed and recovered, the head 200 is rotated by an appropriate angle, the first multi-axis drilling The second multi-axis drilling step of forming a second multi-axis drilling tool (h2) by adjusting the core drill 230 is disposed between the tool h1, and then operating the drive motor 330 and the transfer cylinder 320 again S20 may be performed.

Through the first multi-axis drilling step (S10) and the second multi-axis drilling step (S20) is formed an annular perforated space as shown in Figure 10, the core force (c) remaining in the center is removed through a rock or excavation equipment Can be removed through the core-burring step (S30), a circular multi-axis drilling tool (h) can be formed in the form of a circular hole as shown in FIG.

At this time, the circular multi-axis drilling tool (h) may be formed on both sides of the lower side in the free surface to be tunneled, respectively, as shown in Figure 12 toward the outside from the center of the tunnel to be excavated, it may be provided to be inclined downward.

The formation direction of the circular multi-axis drilling tool (h) has the effect that the lubricating fluid supplied to the incision of the incision surface through the core drill 230 can be supplied to the point where the incision is naturally performed by its own weight There is.

As described above, a preferred embodiment according to the present invention has been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

T: tunnel
O: ancestor diameter
h: circular multi-axis drilling tool
h1: first multi-axis drilling tool h2: second multi-axis drilling tool
c: core
10: excavator
20: boring device
100: housing 110: linkage
120: supporter 122: pressure bar
124: supporting cylinder
200: head 210: swing motor
220: swing gear 230: core drill
232: cylinder 234: crown
236: driven gear
300: transfer unit 310: base
320: transfer cylinder 330: drive motor
332: drive gear

Claims (9)

A core drill provided with a cylindrical cylinder having an inner hollow and a crown having a circular cutting edge at one end of the cylinder;
A head having a plurality of core drills disposed in parallel, the heads being coupled such that each crown is disposed on an imaginary circumference formed in the same plane;
A driving unit for generating a driving force such that each of the core drills is rotated about a rotation axis connecting the center of the cylinders, and a plurality of the core drills are projected to the front of the head; And
A housing configured to receive the core drill and the transfer unit therein and including a linkage to be coupled to external equipment on one side of an outer circumferential surface thereof;
This includes,
The head is
Is rotatably coupled to the front of the housing according to the operation of the swing motor, a plurality of the core drill fixedly coupled to the head is configured to rotate about the central axis of the housing in dependence on the rotation of the head,
Includes; the base is coupled to the other end of the plurality of core drill
The transfer unit,
A driving motor disposed at the rear of the base and connected to each of the plurality of core drills to transmit rotational force so that the core drills may rotate independently of each other; And
A transfer cylinder disposed at one side of the rear of the base to operate the base back and forth and to transfer the core drill back and forth;
Boring device equipped with a multi-core core drill group.
delete delete delete The method of claim 1,
The housing is
A pressure bar provided to protrude toward the front of the head and having a sharp end protruding toward the front of the head; And
A supporting cylinder which is coupled to the pressure bar and is operated to protrude and feed the pressure bar toward the front of the head;
Boring device equipped with a multi-core core drill group.
delete The method of claim 1,
The core drill is boring device having a multi-core core drill group is supplied with lubricating liquid through the inner space of the cylinder.
As a method of securing a free surface using a boring device according to any one of claims 1, 5 and 7.
A first multi-axis drilling step of forming a first multi-axis drilling tool using the boring device on both sides of the lower end of the free surface of the tunnel to be drilled;
A second multi-axis drilling step of forming a second multi-axis drilling tool by rotating a plurality of core drills provided in the boring device; And
A core force removing step of forming a circular multi-axis drilling tool by removing inner core forces of the first multi-axis drilling tool and the second multi-axis drilling tool;
Free surface securing method for tunnel excavation included.
The method of claim 8,
The circular multi-axis drilling tool,
A free surface securing method for tunnel excavation is formed to be inclined downward toward the outside of the tunnel to be excavated along the longitudinal direction of the tunnel to be excavated.

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