KR20180135377A - Boring casings pipe for micro-pile with connector - Google Patents

Abstract

The present invention relates to a micro-pile drilling casing pipe with a connector, capable of reducing a construction time. According to the present invention, the micro-pile drilling casing pipe with a connector comprises: a casing pipe (100) inserted into a drilling hole in construction of a micro-pile; a connector (200) coupled and fixed to the casing pipe, and interconnecting the casing pipe and another closely attached casing pipe; and one or more screws (300) installed in the longitudinal direction of the casing pipe (100) at predetermined intervals and having a drilling hole formed on the ground.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a micropile casing pipe having a connector,

And the casing pipe can be reused without being damaged by simple disassembly. Particularly, since the connection pipe formed in the first flange is inserted into the insertion hole formed in the second flange and used, The present invention relates to a micropile drilling casing pipe provided with a connecting hole to withstand rotation torque generated in a casing pipe located at a lower portion by rotation of a casing pipe.

Generally, MICRO-PILE was developed in Italy in the 1950s for the building reinforcement and was constructed under the name PALIRADICE, and then similar processes as palliadis were started.

Various types of construction methods for building foundation reinforcement are collectively called micro-pile, and it is called "micro pile". It is called "micro pile" because it has high bearing capacity with small diameter and it is difficult to enter large equipment. In case of damaged foundation reinforcement and bridging of soft ground It is being constructed. In addition, microfiles can be advantageously applied to FRICTION-PILE where the grounding conditions are unfavorable because of the bearing capacity of the ground and the files.

Therefore, such a micro pile is drilled to a certain depth required in the ground using a small-sized drilling machine (crawler drill), and then a pipe and a threed bar are assembled and installed, and then a low pressure (7 ~ 21BAR) to form a small-diameter drilled-in-place pile.

However, in the conventional method of connecting to the connection portion of the casing pipe by welding, it is required that the worker is required to weld multiple casing pipes as much as the penetration depth of the perforation hole in the field, It is difficult to precisely weld the steel pipe so as to conform to the line, thereby deteriorating the quality of the construction. Further, when the casing pipe is pulled out and processed in the future, the casing pipe again needs to be cut to a predetermined length, and labor and resources are wasted. There is a problem that the cutting portion of the pipe is weakened in strength due to corrosion and thermal deformation due to welding.

(Document 1): Korean Patent No. 10-0710754 (registered on April 16, 2007) (Document 2): Korean Patent No. 10-0587798 (registered on June 01, 2006)

The present invention uses a connecting pipe connecting the casing pipe and the other casing pipe, which can be assembled and disassembled without any troublesome welding work, shortening the construction time and reusing the casing pipe without any damage due to simple disassembly The connecting pipe formed in the first flange is inserted into the insertion hole formed in the second flange so as to be provided with a connecting hole for allowing the rotating torque generated in the casing pipe located at the bottom by the rotation of the casing pipe to withstand To provide microfiber perforated casing pipes.

In addition, in the present invention, by forming the bobbin at the corner of the first flange and the second flange, the casing pipe 100, which is rotated by the pressing of the soil, And a connecting hole for preventing torque from being generated and reducing the rotational force.

The various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

The micropile drill casing pipe provided with the connector according to the present invention includes a casing pipe (100) inserted into the drill hole at the time of microfabrication; (200) fastened to the casing pipe and connected to another casing pipe in close contact with the casing pipe; And a screw (300) for fixing at least one or more spaced-apart spaced apart casing (100) in the longitudinal direction of the casing pipe (100) and forming a perforation hole in the ground surface, A first flange 210 fastened to the lower end of the body 100 and formed in a hexagonal shape and having a fastening hole 240 at each corner of the hexagonal shape; A second flange 220 formed in the same shape as the first flange 210 and closely contacting another casing pipe 100 fastened with the first flange 210; And fastening means 230 formed on the outer circumferential surface of the first flange 210 and the second flange 220 so as to be threaded through the fastening holes 240 formed in the first flange 210 and the second flange 220.

The connector 200 is formed at the center of the first flange 210 and is inserted into the insertion hole 221 formed in the second flange 220 and connected to the second flange 220 The connecting pipe 211 is formed in a hexagonal shape and is inserted and fixed in the insertion hole 221 formed in the second flange 220. The rotation of the casing pipe 100, So as to withstand the rotational torque generated in the casing pipe 100 located at the lower portion.

A load torque is generated in the casing pipe 100 which is formed by projecting outwardly from the corner portions of the first flange 210 and the second flange 220 and the earths are collapsed into the perforation holes and rotated by the pressing of the earth And a bite blade 250 for preventing the rotational force from decreasing.

The details of other embodiments are included in the detailed description and drawings.

The micro pile drilling casing pipe provided with the connector according to the present invention can be assembled and disassembled without any troublesome welding work by using a connecting pipe connecting the casing pipe and the other casing pipe, The connecting pipe formed in the first flange is inserted into the inserting hole formed in the second flange to be used in the casing pipe caused by the rotation of the casing pipe, So that it is possible to withstand the rotational torque.

In addition, since the micro pile drilling casing pipe provided with the connector according to the present invention is formed by forming the bite edge at the corner portion of the first flange and the second flange, when the micro pile is crushed, There is an effect that a load torque is generated in the casing pipe 100 rotated by the rotation of the casing pipe 100 and the rotation force is prevented from being reduced.

It will be appreciated that embodiments of the technical idea of the present invention can provide various effects not specifically mentioned.

1 is an exploded perspective view of a micro pile drilling casing pipe having a connector according to the present invention.
2 is an exploded perspective view of a micro pile perforated casing pipe with a connector according to the present invention.
FIG. 3 is a view showing a state in which a micro pile perforated casing pipe with a connector according to the present invention is installed.
FIG. 4 is a cross-sectional view of a micropile drilling casing pipe with a connector according to the present invention.
5 is an exploded cross-sectional view of a connector in a micro pile perforated casing pipe with a connector according to the present invention.
6 is a cross-sectional view of a connector in a micro pile perforated casing pipe with a connector according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may be referred to as a first component.

Terms such as top, bottom, top, bottom, or top, bottom, etc. are used to distinguish relative positions in components. For example, in the case of naming the upper part of the drawing as upper part and the lower part as lower part in the drawings for convenience, the upper part may be named lower part and the lower part may be named upper part without departing from the scope of right of the present invention .

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a micro pile drilling casing pipe having a connector according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of a micro pile perforated casing pipe with a connector according to the present invention, FIG. 2 is an assembled perspective view of a micro pile perforated casing pipe with a connector according to the present invention, FIG. 4 is a view showing a connecting part of a micro pile perforated casing pipe having a connecting hole according to the present invention, and FIG. 5 is a sectional view of a connecting pipe according to the present invention. FIG. 6 is a sectional view of a connector in a micro pile perforated casing pipe provided with a connector according to the present invention. FIG.

1 to 6, the micropile drilling casing pipe having the connector according to the present invention is formed on the ground to prevent the construction time of the micropile due to clogging of the perforation hole due to the collapse of the ground, A casing pipe 100 inserted into the perforation hole is formed to be able to be disassembled or assembled without being welded so as to have excellent workability and workability and may include a casing pipe 100, a connecting port 200, and a screw 300 .

The casing pipe 100 is formed of a cylindrical pipe having a predetermined length and is inserted into the perforation hole at the time of microfabrication and is used by those skilled in the art. A detailed description thereof will be omitted.

The connector 200 may be provided to facilitate coupling to the upper end of a plurality of casing pipes 100 inserted in the perforation hole when microfiling is performed. The connector 200 may include a first flange 210, a second flange 220, fastening means 230, and a bite edge 250.

The first flange 210 is fixed to the lower end of the casing pipe 100 by welding or the like and is formed of a hexagonal plate having a predetermined thickness and a plurality of fastening holes 240 are formed at each corner of the hexagonal shape .

The first flange 210 may include a coupling pipe 211 that is fitted in the center of the second flange 220 and transmits rotational power to the second flange 220.

The connection pipe 211 is formed in a hexagonal shape and is inserted into and fixed to the insertion hole 221 formed in the second flange 220. The casing pipe 100 disposed at the lower portion by rotation of the upper casing pipe 100, So as to withstand the rotational torque generated by the motor. Meanwhile, the insertion hole 221 may be formed to correspond to the connection pipe 211 so that the connection pipe 211 can be inserted and fixed.

For example, when the upper casing pipe 100 is rotated to transmit rotational power to the lower casing pipe 100, the casing pipe 100 located at the lower side may be twisted or shaken due to the rotation torque In order to solve such a problem, in the present invention, a coupling pipe 211 is provided between the first flange 210 and the second flange 220 to minimize twisting or shaking of the casing pipe 100.

The second flange 220 is formed in the same shape as the first flange 210 and is fastened and fixed to the upper end of the casing pipe 100 by welding or the like and the first flange 210 formed on the other casing pipe 100 And can be screwed into the fastening means 230. The second flange 220 may be formed with a fastening hole 240 at the same position as the first flange 210 which is closely attached thereto.

The fastening holes 240 formed in the first flange 210 and the second flange 220 may be threaded on the inner circumferential surface so as to be screwed with the fastening means 230. A through hole 212 is formed at the center of the connection pipe 211 so that the hollow portion formed inside the casing pipe 100 and the other casing pipe 100 are passed through each other.

The fastening means 230 is used as a bolt having a thread formed on the outer circumferential surface thereof and is screwed to a fastening hole 240 formed in the first flange 210 and the second flange 220, The casing pipe 100 may be fixed to each other.

The bite blade 250 is formed so as to be inclined outward in the direction of being protruded outward at the corner portions of the first flange 210 and the second flange 220 and is provided to improve the rotational force of the casing pipe 100 .

For example, in the case of microfabrication, when the soil material falls into the perforation hole, a load torque may be generated in the casing pipe 100 rotating due to the pressing of the soil material, resulting in a problem that the rotational force is reduced. The weights 250 are formed on the corner portions of the first flange 210 and the second flange 220 to minimize the load weight on the rotating casing pipe 100.

At least one or more screws 300 may be installed to be spaced apart from each other by a predetermined distance in the longitudinal direction of the casing pipe 100, and may be provided to form a perforation hole in the ground. Meanwhile, the screw 300 is used to form a perforation hole when a microfiber construction is performed, and it is well known to those skilled in the art, and a detailed description will be omitted in an embodiment of the present invention.

Hereinafter, a use state of the micro pile drilling casing pipe having the connector according to the present invention will be described with reference to the accompanying drawings.

First, the casing pipe 100 is fixed to the upper end of the first perforation hole by welding or the like and the other casing pipe 100 is extended to the upper side of the second flange 220, The first flange 210 and the second flange 220 are positioned so that the first flange 210 and the second flange 220 are in close contact with each other. The first flange 210 and the second flange 220 are inserted and fixed in the insertion hole 221 formed in the first flange 220 and the coupling holes 240 formed in the second flange 220 are aligned with each other.

Next, the fastening means 230 is inserted into the fastening holes 240 formed in the first flange 210 and the second flange 220 and screwed into the casing pipe 100 and the casing pipe 100 ) Are fixed to each other.

When penetrating into the depth of the perforation hole, the casing pipe 100 may be vibrated or twisted when the drill bit or the like of the drilling equipment (not shown) is rotated. Such vibration or twist may be absorbed by the coupling pipe 211 Therefore, it is possible to reduce the construction time and to reduce the construction cost and to construct the high quality micro pile.

That is, when the casing pipe, which is a problem of the casing pipe extending method according to the conventional welding, is pulled out from the perforation hole, it is not necessary to carry out a troublesome operation to cut and reuse the welded casing pipe, It is possible to reuse the casing pipe 100 and the casing pipe 210 can be easily reused using the coupling pipe 211 without the inconvenience of being welded on the center axis line of the casing pipe and the extending casing pipe, There is an advantage that the pipe 100 is extended and the straightness to the ground is excellent, so that a microfile construction of a higher quality can be performed.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that one embodiment described above is illustrative in all aspects and not restrictive.

100; Casing pipe
200; Connector
210; The first flange
211; Connector
212; Through-hole
220; The second flange
221; Insert ball
230; Fastening means
240; Fastener
250; Byte day
300; screw

Claims (3)

A casing pipe (100) inserted into the perforation hole at the time of microfilm construction;
(200) fastened to the casing pipe and connected to another casing pipe in close contact with the casing pipe; And
And at least one screw (300) for fixing the casing pipe (100) at a predetermined spacing in the longitudinal direction and forming a perforation hole on the ground surface,
The connector (200)
A first flange 210 fastened to the lower end of the casing pipe 100 and formed in a hexagonal shape and having a fastening hole 240 formed at each corner of the hexagonal shape;
A second flange 220 formed in the same shape as the first flange 210 and closely contacting another casing pipe 100 fastened with the first flange 210; And
And a fastening means 230 formed on the outer circumferential surface of the first flange 210 and the second flange 220 so as to be threaded through the fastening holes 240 formed in the first flange 210 and the second flange 220. [ File perforated casing pipe.
The method according to claim 1,
The connector (200)
And a connection pipe 211 formed at the center of the first flange 210 and inserted into the insertion hole 221 formed in the second flange 220 to transmit rotational power to the second flange 220 ,
The connection pipe (211)
And is inserted and fixed in the insertion hole 221 formed in the second flange 220. The rotation torque generated in the casing pipe 100 located at the lower portion by the rotation of the upper casing pipe 100 Wherein the connecting pipe is provided with a through hole and a through hole.
The method according to claim 1,
A load torque is generated in the casing pipe 100 which is formed by projecting outwardly from the corner portions of the first flange 210 and the second flange 220 and the earths are collapsed into the perforation holes and rotated by the pressing of the earth And a bite blade (250) for preventing the rotational force from being reduced.

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