KR20180010782A - Fixed pack and manufacturing system of helical screw drill structure - Google Patents

Fixed pack and manufacturing system of helical screw drill structure Download PDF

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Publication number
KR20180010782A
KR20180010782A KR1020160093446A KR20160093446A KR20180010782A KR 20180010782 A KR20180010782 A KR 20180010782A KR 1020160093446 A KR1020160093446 A KR 1020160093446A KR 20160093446 A KR20160093446 A KR 20160093446A KR 20180010782 A KR20180010782 A KR 20180010782A
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South Korea
Prior art keywords
screw drill
drill structure
soil
pack
fixing
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KR1020160093446A
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Korean (ko)
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석 규 이
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석 규 이
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00Tents or canopies, in general
    • E04H15/32Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/62Pegs, stakes or the like
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00Fencing, e.g. fences, enclosures, corrals
    • E04H17/02Wire fencing, e.g. made of wire mesh
    • E04H17/06Parts for wire fences
    • E04H17/08Anchoring means therefor, e.g. specially-shaped parts entering the ground; Struts or the like
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00Fencing, e.g. fences, enclosures, corrals
    • E04H17/14Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
    • E04H17/20Posts therefor
    • E04H17/22Anchoring means therefor, e.g. specially-shaped parts entering the ground; Struts or the like

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Fencing (AREA)

Abstract

The present invention relates to a fixing pack of a spiral screw drill structure, which is used as a tent fixing pack, a fence fixing pack, and a facility fixing pack, and a manufacturing system for the same. According to the present invention, a soil adherence surface (4) of a screw groove form is structured on a body (2) of a spiral screw drill structure and is applied with power in all direction at the angle of 360 degrees, as shown in FIG. 1 which prevents a structure of the fixing pack of the spiral screw drill structure. So, the body (2) of the spiral screw drill structure is drawn not to be separated or not to be tilted. Also, the fixing pack of the spiral screw drill structure can remarkably improving effect of soil pressure applied to the soil adherence surface (4) of the screw groove form and can form a soil through hole (3) to support the body (2) of the spiral screw drill structure. The soil coming into contact with both sides of the soil adherence surface (4) of the screw groove form passes through the soil through hole (3) so that soil is linked with each other. So, viscosity is strongly improved, and the soil strongly adheres to the surface of the body (2) of the screw drill structure without an opening. So, the fixing pack of the spiral screw drill structure can excellently fix a facility.

Description

나선형 스크류드릴 구조의 고정팩 및 제조 시스템{omitted}Fixing pack and manufacturing system for helical screw drill structure {omitted}

본 발명은 텐트 고정팩, 휀스울타리 고정팩, 시설물 고정팩 으로 사용 되는 것 으로써,The present invention is used as a tent fixing pack, a fence fence fixing pack, and a facility fixing pack,

나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 관한 것이다To a fixed pack and manufacturing system of a helical screw drill structure

종래에는 텐트 고정팩, 휀스울타리 시설물 고정팩 으로 사용 되는것 으로써,Conventionally, it is used as a fixing pack for a tent fixing pack and a fence fence,

출원번호202011-0004181(2011,05,17)Application No. 202011-0004181 (2011, May, 17)

명칭: 텐트설치용팩Name: Tent installation pack

에서 보는 바와 같은 구조 로써As shown in Fig.

첫째,토사에 대하여 접지 지지력이 작아 외력이 작용하면 팩이 쉽게 뽑혀 안전사고가 발생하는 단점이 있다First, there is a disadvantage that when the external force is applied due to the small ground supporting force against the earth, the pack is easily pulled out and a safety accident occurs

둘째,단단한 흙에 삽입이 어려운 단점이 있다Second, there is a drawback that it is difficult to insert into hard soil

셋째,팩을 지중속에 망치로 가격하여 박아 넣을 때 소음이 발생하는 단점이 있다Third, there is a disadvantage that noise is generated when a pack is put into the ground with a hammer

넷째,기둥을 세울 때 콘크리트를 타설하거나 지중에 구멍을 뚤어 구멍을 확보한뒤 기둥을 지중에 삽입하는 다단계 작업 공증 으로써 시공시간이 길고 가격코스트가 매우높은 단점이 있다,Fourth, there is a disadvantage that construction time is long and cost is very high because it is a multi-stage work notarization where concrete is laid or a hole is formed by inserting a pillar into the ground after securing a hole by piercing the pier.

본 발명은 상기한 종래의 문제점을 해소하기 위하여DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-

나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 을 제공 하는데 목적이 있다It is an object of the present invention to provide a fixed pack and a manufacturing system of a helical screw drill structure

본 발명은 나선형 스크류드릴 구조의 고정팩 및 제조 시스템을 제공하여 목적을 달성한다The present invention achieves the object by providing a fix pack and a manufacturing system of a helical screw drill structure

본 발명은 나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 관한 것 으로써The present invention relates to a fixed pack and a manufacturing system of a helical screw drill structure,

첫째,토사에 대하여 접지 지지력이 강하여 외력에 대하여 저항성이 커서 안전사고를 미연에 방지 하는 장점이 있다First, there is an advantage that the ground supporting force is strong against the earth and the resistance against external force is large, thereby preventing a safety accident

둘째,스크류 드릴 을구조하여 단단한 흙을 용이하게 파공하는 장점이 있다Second, there is an advantage that the screw drill is structured to pierce hard soil easily

셋때,팩을 지중속에 망치로 가격하여 박아 넣을 때 소음이 발생하지 않는 장점이 있다There is an advantage in that no noise is generated when the pack is pushed into the ground with a hammer

넷째,나선형 스크류드릴 구조의 몸체(2)를 직중에 직접 박아넣고 시설물을 고정하는 것으로 공사기간이 단축되어 코스트가 작아지는 장점이 있다 Fourth, there is an advantage that the construction period is shortened and the cost is reduced by directly inserting the body (2) of the helical screw drill structure into the work and fixing the facility

도1은 본 발명의 따른, 나선형 스크류드릴 구조의 고정팩 및 제조 시스템을 개략적으로 도시한 구조도
※ 도면의 주요 부분에 부호의 설명
1: 고리쇠 2: 나선형 스크류드릴 구조의 몸체
3: 토사 연계통공 4: 스크류홈 형태의 토사 밀착면
5: 토사절삭 파공드릴 6: 스크류 나선 돌출부
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a fix pack and a manufacturing system of a helical screw drill structure according to the present invention;
In the drawings,
1: Loop 2: Body of spiral screw drill structure
3: Through-hole connecting with soil 4:
5: Sawdust cutting piercing drill 6: Screw spiral protrusion

이하, 첨부된 도면을 참조하여 본 발명을 한정하지 않는 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명은 나선형 스크류드릴 구조의 고정팩 및 제조 시스템을 개략적으로 도시한 구조도이고,BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a fixing pack and a manufacturing system of a helical screw drill structure,

"구체적으로 살펴보면 아래와 같다.""Specifically, look at the following."

본 발명은 텐트 고정팩, 휀스울타리 고정팩, 시설물 고정팩 으로 사용 되는 것 으로써,The present invention is used as a tent fixing pack, a fence fence fixing pack, and a facility fixing pack,

나선형 스크류드릴 구조의 고정팩 및 제조 시스템 에 관한 것이다To a fixed pack and manufacturing system of a helical screw drill structure

본 발명의 나선형 스크류 드릴 구조의 고정팩에 대하여 이루어진 구조를 도1,을 예시하여 나열 하자면 나선형 스크류드릴 구조의 몸체(2)에 스크류홈 형태의 토사 밀착면(4)을 구조하여 나선형 스크류드릴 구조의 몸체(2)가 지면을 뚫고 지중에 삽입되면 토사압력이 2회전 이상으로 구조된 스크류 나선 돌출부(6)와 스크류홈 형태의 토사 밀착면(4)의 상하,좌우 각도 360도 다 방향에서 힘을 가하여 스크류드릴 구조의 몸체(2)가 이탈되거나 기울지 않도록 탁월하게 도출 한 것 이고1 is a perspective view of a helical screw drill structure according to an embodiment of the present invention. FIG. 1 is a perspective view of a helical screw drill structure according to an embodiment of the present invention. When the body 2 of the screw 2 is inserted into the ground through the ground, the screw spiral protrusion 6 having the earth pressure of 2 rotations or more and the screw groove-like earth contact face 4 are rotated 360 degrees So that the body 2 of the screw drill structure is not detached or tilted.

또한, 스크류홈 형태의 토사 밀착면(4)을 가하는 토사 압력의 효과를 탁월하게 증진시켜 나선형 스크류드릴 구조의 몸체(2)를 지지 하도록 토사 연계통공(3)을 형성시켜 스크류홈 형태의 토사 밀착면(4)양측에 접촉하는 토사를 토사 연계통공(3)을 관통하여 토사끼리 연계시켜 점력을 강하게 상승시키고 토사를 스크류드릴 구조의 몸체(2)면에 공극없이 강하게 밀착시켜 시설물을 탁월하게 고정 시키도록 도출 한 것이다In addition, the effect of the earth pressure applied to the soil contact surface 4 in the form of a screw groove can be improved to an excellent extent so that the soil contact hole 3 is formed to support the body 2 of the helical screw drill structure, The surface of the surface of the screw drill structure is strongly adhered to the surface of the body (2) of the screw drill structure, thereby firmly fixing the facility to be derived

또한, 스크류드릴 구조의 몸체(2)의 하단 끝단부를 V자로 절단하여 잘라내어 구조한, 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 제공하여 신속하고 용이하게 토사절삭 파공작업 시스템을 제공하는 것을 특징으로 한 것이다In addition, it is possible to quickly and easily provide a slurry cutting pore working system by providing a sloping and arcuate slurry-type slurry-cutting porthole drill 5, which is constructed by cutting the lower end of the body 2 of the screw drill structure into V- Feature

또한, 지중으로 파공작업 할때 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 회전시켜 나선형 스크류드릴 구조의 몸체(2)하단 외주면에 접촉한 토사를 절삭하여 나선형 스크류드릴 구조의 몸체(2)중심점을 향하여 이동시켜 스크류홈 형태의 토사 밀착면(4)에 강하게 밀착시키는 것을 특징으로 한것이다In addition, when the piercing operation is performed in the ground, the soil-cutting slurry piercing drill 5 rotates in a spiral shape to cut off the gravel-like material contacting the outer peripheral surface of the lower end of the body 2 of the spiral- So as to strongly adhere to the soil contact surface (4) in the form of a screw groove

또한,스크류드릴 구조의 몸체(2)의 상단부에 고리쇠 (1)를 구비하여 고정된 팩에 시설물을 고정하는 로프를 연결하여 시설물을 안전하게 고정하는것 이고,In addition, the ring drill 1 is provided at the upper end of the body 2 of the screw drill structure to securely fix the facility by connecting a rope for fixing the facility to the fixed pack,

한 편으로는 고리쇠(1)구멍에 쇠막대 공구를 끼워 넣거나 공구를 이용하여 힘을 가하여 나선형 스크류드릴 구조의 몸체(2)를 회전시키면서 더불어 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 회전시켜 토사를 용이하게 파공하여 발생된 토사를 스크류홈 형태의 토사 밀착면(4)에 압밀하고 나선형 스크류드릴 구조의 몸체(2)를 지중에 안착시켜 고정팩으로 사용하는 것을 포함한다On the other hand, an iron rod tool is inserted into the hole of the collar (1) or a force is applied by a tool to rotate the body (2) of the helical screw drill structure while rotating the trowel- The soil is easily pierced, and the generated gravel is consolidated on the gravel-like adhered surface 4 in the form of a screw groove, and the body 2 of the spiral screw drill structure is seated in the ground to be used as a fixed pack

또한, 본발명을 휀스울타리 고정팩, 시설물 고정팩 으로 사용하기 위하여 스크류드릴 구조의 몸체(2)의 상단부에 고리쇠 (1)구조를 변형시켜 파이프연결소켓을 구비하여 볼트,너트를 죄어 시설물의 지주대를 고정 거치 할 수 있는 것을 포함 한 것 이다Further, in order to use the present invention as a fence fixing fixture pack and a facility fixation pack, the structure of the hinge 1 is modified at the upper end of the body 2 of the screw drill structure to provide a pipe connection socket, Including those that can be fixed and fixed

또한, 본발명의 나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 관한 것을 제조하기 위하여 아래 와 같은 단계를 거친다Further, in order to manufacture the fixing pack and the manufacturing system of the spiral screw drill structure of the present invention, the following steps are performed

첫째,평철 또는 비철금속,자재 중에서 선택하여 판재형태로 재단하고 가공기를 이용하여 토사 연계통공(3)을 형성 시키는 단계,First, a step of selecting a flat steel, a non-ferrous metal or a material, cutting it into a plate form, and forming a soil-

둘째,상기 단계에서 판재형태로 재단 된 부재를 가열하고 부재 양측 끝단부를 수동 또는 동력구동장치를 사용하여 각각 잡아 고정시키고 서로 반대방향으로 비틀어 스크류드릴 구조의 몸체(2)형태로 구조시켜 싸이즈에 따라 절단하여 제조하는 단계,Secondly, in the above step, the members cut in plate form are heated and both end portions of the members are held and fixed by using a manual or power drive device, and are twisted in opposite directions to each other to form a body 2 of a screw drill structure, Cutting,

셋째,상기단계에서 제조된 스크류드릴 구조의 몸체(2)의 하단 끝단부를 V자로 절단하여 잘라내어 구조한, 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 형성시키고 스크류드릴 구조의 몸체(2)의 상단 끝단부에 고리쇠(1)를 결합시키는 단계로 제조 되는것을 특징으로 하는Third, the bottom end of the body (2) of the screw drill structure manufactured in the above step is cut into V-shaped and cut to form a rhizome, ash-shaped, soil-cutting punch drill (5) (1) to the upper end of the ring

나선형 스크류드릴 구조의 고정팩 및 제조 시스템,Fixing packs and manufacturing systems for helical screw drill structures,

Claims (6)

본 발명은 나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 관한 것 으로써
나선형 스크류드릴 구조의 몸체(2)에 스크류홈 형태의 토사 밀착면(4)을 구조하여 나선형 스크류드릴 구조의 몸체(2)가 지면을 뚫고 지중에 삽입되면 토사압력이 2회전 이상으로 구조된 스크류 나선 돌출부(6)와 스크류홈 형태의 토사 밀착면(4)의 상하,좌우 각도 360도 다 방향에서 힘을 가하여 스크류 드릴 구조의 몸체(2)가 이탈되거나 기울지 않도록 도출 한 것 과
본 발명의 나선형 스크류드릴 구조의 고정팩 및 제조 시스템에 관한 것을 제조하기 위하여 아래 와 같은 단계를 거친다
첫째,평철 또는 비철금속,자재 중에서 선택하여 판재형태로 재단하고 가공기를 이용하여 토사 연계통공(3)을 형성 시키는 단계,
둘째,상기 단계에서 판재형태로 재단 된 부재를 가열하고 부재 양측 끝단부를 수동 또는 동력구동장치를 사용하여 각각 잡아 고정시키고 서로 반대방향으로 비틀어 스크류드릴 구조의 몸체(2)형태로 구조시켜 싸이즈에 따라 절단하여 제조하는 단계,
셋째,상기단계에서 제조된 스크류드릴 구조의 몸체(2)의 하단 끝단부를 V자로 절단하여 잘라내어 구조한, 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 형성시키고 스크류드릴 구조의 몸체(2)의 상단 끝단부에 고리쇠(1)를 결합시키는 단계로 제조 되는것을 특징으로 하는
나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The present invention relates to a fixed pack and a manufacturing system of a helical screw drill structure,
When the body 2 of the helical screw drill structure is inserted into the ground through the construction of the helicoidal screw drill structure body 2 of the helical screw drill structure in the form of a screw groove, The screw drill structure is so designed that the body 2 of the screw drill structure is not deviated or tilted by exerting a force in the direction of 360 degrees in the up-and-down and left-right directions of the helical projecting portion 6 and the earth-
The following steps are carried out to produce the fixed pack and manufacturing system of the spiral screw drill structure of the present invention
First, a step of selecting a flat steel or a non-ferrous metal or a material, cutting it into a plate form, and forming a soil-
Secondly, in the above step, the members cut in plate form are heated and both end portions of the members are held and fixed by using a manual or power drive device, and are twisted in opposite directions to each other to form a body 2 of a screw drill structure, Cutting,
Third, the bottom end of the body (2) of the screw drill structure manufactured in the above step is cut into V-shaped and cut to form a rhizome, ash-shaped, soil-cutting punch drill (5) (1) to the upper end of the ring
Fixing packs and manufacturing systems for helical screw drill structures,
제1항에 있어서
스크류홈 형태의 토사 밀착면(4)을 가하는 토사 압력의 효과를 탁월하게 증진시켜 나선형 스크류드릴 구조의 몸체(2)를 지지 하도록 토사 연계통공(3)을 형성시켜 스크류홈 형태의 토사 밀착면(4)양측에 접촉하는 토사를 토사 연계통공(3)을 관통하여 토사끼리 연계시켜 점력을 강하게 상승시키고 토사를 스크류드릴 구조의 몸체(2)면에 공극없이 강하게 밀착시켜 시설물을 탁월하게 고정 시키도록 도출 한 것을 특징으로 하는
나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The method of claim 1, wherein
It is possible to enhance the effect of the earth pressure applied to the soil contact surface 4 in the form of a screw groove to form the soil contact hole 3 to support the body 2 of the helical screw drill structure, 4) To increase the strength by connecting the soil to the both sides through the soil-jointed through hole (3) to connect the soil to each other and to strongly fix the soil to the surface of the body (2) of the screw drill structure Characterized in that
Fixing packs and manufacturing systems for helical screw drill structures,
제1항에 있어서
스크류드릴 구조의 몸체(2)의 하단 끝단부를 V자로 절단하여 잘라내어 구조한, 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 제공하여 신속하고 용이하게 토사절삭 파공작업 시스템을 제공하는 것을 특징으로 하는
나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The method of claim 1, wherein
The present invention provides a soil-cutting piercing drill (5) in the form of a rhinestone-shaped, earthy cutting piercing the bottom end of the body (2) of the screw drill structure with a V- doing
Fixing packs and manufacturing systems for helical screw drill structures,
제1항에 있어서
지중으로 파공작업 할때 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 회전시켜 나선형 스크류드릴 구조의 몸체(2)하단 외주면에 접촉한 토사를 절삭하여 나선형 스크류드릴 구조의 몸체(2)중심점을 향하여 이동시켜 스크류홈 형태의 토사 밀착면(4)에 강하게 밀착시키는 것을 특징으로 하는
나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The method of claim 1, wherein
(2) of the spiral-type screw drill structure is cut by cutting the soil-contacted portion of the spiral-type screw drill structure with the outer peripheral surface of the lower end of the body (2) So as to strongly adhere to the soil contact adhering surface (4) in the form of a screw groove
Fixing packs and manufacturing systems for helical screw drill structures,
제1항에 있어서
스크류드릴 구조의 몸체(2)의 상단부에 고리쇠 (1)를 구비하여 고정된 팩에 시설물을 고정하는 로프를 연결하여 시설물을 안전하게 고정하는것 과
고리쇠(1)구멍에 쇠막대 공구를 끼워 넣거나 공구를 이용하여 힘을 가하여 나선형 스크류드릴 구조의 몸체(2)를 회전시키면서 더불어 뾰죽 하면서 아루형태의 토사절삭 파공드릴(5)을 회전시켜 토사를 용이하게 파공하여 발생된 토사를 스크류홈 형태의 토사 밀착면(4)에 압밀하고 나선형 스크류드릴 구조의 몸체(2)를 지중에 안착시켜 고정팩으로 사용하는 것을 특징으로 하는 나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The method of claim 1, wherein
A ring rig 1 is provided at the upper end of the body 2 of the screw drill structure to securely fix the facility by connecting a rope fixing the facility to the fixed pack,
(2) of the spiral screw drill structure is rotated by applying an iron rod tool to the hole of the ring (1) or applying a force using a tool to rotate the alum-like slurry-type pitting drill (5) And the body 2 of the helical screw drill structure is seated in the ground to be used as a fixed pack. The helical screw drill structure according to claim 1, And manufacturing systems,
제1항에 있어서
휀스울타리 고정팩, 시설물 고정팩 으로 사용하기 위하여 스크류드릴 구조의 몸체(2)의 상단부에 고리쇠 (1)구조를 변형시켜 파이프연결소켓을 구비하여 볼트,너트를 죄어 시설물의 지주대를 고정 거치 할 수 있는 것을 특징으로 하는 나선형 스크류드릴 구조의 고정팩 및 제조 시스템,
The method of claim 1, wherein
A fence fence fixing pack, and a facility fixing pack, the structure of the ring 1 is formed at the upper end of the body 2 of the screw drill structure, and a pipe connection socket is provided to tighten the bolts and nuts, A fixed pack and a manufacturing system of a spiral screw drill structure,
KR1020160093446A 2016-07-21 2016-07-21 Fixed pack and manufacturing system of helical screw drill structure KR20180010782A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220156204A (en) 2021-05-18 2022-11-25 유병희 Functional Fixed Pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220156204A (en) 2021-05-18 2022-11-25 유병희 Functional Fixed Pack

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