KR100622142B1 - Drilling machine for water suply and drainage manhole establishment - Google Patents

Drilling machine for water suply and drainage manhole establishment Download PDF

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Publication number
KR100622142B1
KR100622142B1 KR1020060014465A KR20060014465A KR100622142B1 KR 100622142 B1 KR100622142 B1 KR 100622142B1 KR 1020060014465 A KR1020060014465 A KR 1020060014465A KR 20060014465 A KR20060014465 A KR 20060014465A KR 100622142 B1 KR100622142 B1 KR 100622142B1
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South Korea
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excavation
water
slider
installation
soil
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KR1020060014465A
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Korean (ko)
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문병권
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주식회사 도화종합기술공사
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • E21B7/005—Drilling with mechanical conveying means with helical conveying means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

본 발명은 상하수도 맨홀 설치용 굴착장비에 관한 것으로서, 보다 상세하게는 맨홀을 설치하기 위하여 굴착을 할 때 굴착 작업을 용이하게 함과 아울러 굴착에 소요되는 비용을 대폭 절감할 수 있는 상하수도 맨홀 설치용 굴착장비에 관한 것이다.The present invention relates to a drilling rig for water and sewage manhole installation, and more particularly to the drilling rig for water and sewage manhole installation to facilitate the excavation work when drilling to install the manhole and to significantly reduce the cost of the excavation It is about.

본 발명의 목적은, 맨홀의 설치를 위한 굴착 작업을 용이하게 함과 아울러 암반이 있어도 굴착 작업을 연속할 수 있고 작업자가 벽체등의 콘크리트 포설 작업을 용이하게 할 수 있는 상하수도 맨홀 설치용 굴착장비를 제공함에 있다.It is an object of the present invention to facilitate excavation work for the installation of manholes and to provide excavation equipment for installation of water and sewage manholes that can continue excavation work even if there is a rock and facilitate the worker laying concrete such as walls. Is in.

상기한 목적을 실현하기 위하여 본 발명은, 이동장치(1)에 힌지축(2)으로 설치됨과 아울러 조절실린더(3)에 의해 경사 조절 가능한 수직체결대(4)와, 상기한 수직체결대(4)에 수직으로 설치되어 있는 유압장치(5)와, 상기한 유압장치(5)의 로드(6)에 연결되어 수직 승강하도록 구성되고 가이드(7)에 의해 지지되어 있는 슬라이더(8)와, 상기한 슬라이더(8)에 연결됨과 아울러 모터(9)가 장착되고 하단에 원통형 커버(10)가 형성된 연결대(11)와, 상기한 커버(10)의 상부에 형성되고 굴착날(13)에 의해 굴착된 흙이 외부로 배출되도록 형성된 토사배출구(14)와, 상기한 커버(10)에 회전 가능하게 수납됨과 아울러 모터(9)에 의해 일정 회전속도로 회전하도록 설치되어 흙을 상향 이동시키도록 형성된 나선상의 스크류(12)와, 상기한 스크류(12)의 종단에 설치되어 흙을 굴착할 수 있도록 형성된 굴착날(13)로 구성함을 특징으로 한다.In order to achieve the above object, the present invention is a vertical fastening table 4 which is installed on the moving device 1 as a hinge shaft 2 and which can be tilted and adjusted by an adjustment cylinder 3, and the vertical fastening table ( A hydraulic device 5 installed perpendicularly to 4), a slider 8 connected to the rod 6 of the hydraulic device 5 and vertically lifted and supported by a guide 7, A connecting rod 11 connected to the slider 8 and mounted with a motor 9 and a cylindrical cover 10 formed at a lower end thereof, and formed by an excavation blade 13 formed at an upper portion of the cover 10. The earth and sand outlet 14 formed to discharge the excavated soil to the outside, and is accommodated rotatably in the cover 10 and installed to rotate at a constant rotational speed by the motor 9 is formed to move the soil upward Spiral screw 12 and the end of the screw 12 is provided to excavate the soil It can be characterized in that it consists of a drilling edge 13 formed to.

상하수도 맨홀 설치용 굴착장비 Water and sewage manhole installation excavation equipment

Description

상하수도 맨홀 설치용 굴착장비{Drilling machine for water suply and drainage manhole establishment}Drilling machine for water suply and drainage manhole establishment

도1은 본 발명에 따른 상하수도 맨홀 설치용 굴착장비를 도시한 일부 절개 측면도,Figure 1 is a partial cutaway side view showing a drilling rig for water and sewage manhole installation according to the present invention,

도2는 도1에서 굴착부의 분해 사시도,Figure 2 is an exploded perspective view of the excavation portion in Figure 1,

도3은 일반적인 맨홀의 구조를 도시한 단면도.3 is a cross-sectional view showing the structure of a typical manhole.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1: 이동장치 2: 힌지축1: shifter 2: hinge shaft

3: 조절실린더 4: 수직체결대3: adjusting cylinder 4: vertical fastener

5: 유압장치 6: 로드5: hydraulic system 6: rod

7: 가이드 8: 슬라이더7: guide 8: slider

9: 모터 10: 커버9: motor 10: cover

11: 연결대 12: 스크류11: connecting rod 12: screw

13: 굴착날 14: 토사배출구13: Excavation Day 14: Earth and sand outlet

A: 구멍A: hole

본 발명은 상하수도 맨홀 설치용 굴착장비에 관한 것으로서, 보다 상세하게는 맨홀을 설치하기 위하여 굴착을 할 때 굴착 작업을 용이하게 함과 아울러 굴착에 소요되는 비용을 대폭 절감할 수 있는 상하수도 맨홀 설치용 굴착장비에 관한 것이다.The present invention relates to a drilling rig for water and sewage manhole installation, and more particularly to the drilling rig for water and sewage manhole installation to facilitate the excavation work when drilling to install the manhole and to significantly reduce the cost of the excavation It is about.

일반적으로, 도시의 지하에는 상하수처리를 위한 상수도관 및 하수도관과, 지역난방을 위한 관, 소화전, 전기통신용 케이블을 매설하는 관등이 설치되어 있는 바, 상기한 지하에 매설된 각종관의 유지보수를 위해 여러곳에 맨홀이 설치되어 있게 된다.In general, in the basement of the city, water and sewage pipes for water and sewage treatment, pipes for district heating, fire hydrants, and pipes for telecommunication cables are installed. Manholes will be installed in several places.

상기한 맨홀은 지면을 포크레인등을 이용하여 일정깊이로 굴착한 후 그 내부에 콘크리트등으로 벽체를 형성함과 아울러 관로가 통과할 수 있는 공간을 형성하여, 작업자가 관로를 유지보수할 수 있도록 하는 것이다.The manhole excavates the ground to a certain depth using a fork-lane, etc., and then forms a wall with concrete, etc., and also forms a space through which the pipeline can pass, allowing the operator to maintain the pipeline. will be.

이는 도3에 도시된 바와 같이 굴착한 지하 공간의 내벽을 이루도록 콘크리트로 형성한 벽체(50)와, 상기한 벽체(50)의 상하부를 이루는 슬라브(51)와, 상기한 상부 슬라브(51)의 상면으로 지지되어 지상과 통하도록 형성됨과 아울러 맨홀뚜껑(52)이 개폐되도록 형성된 맨홀상부관(53)으로 이루어져 있다.As shown in FIG. 3, the wall 50 is formed of concrete to form the inner wall of the excavated underground space, the slab 51 forming the upper and lower portions of the wall 50, and the upper slab 51. It is supported by the upper surface is formed to communicate with the ground and consists of a manhole upper pipe 53 formed to open and close the manhole cover 52.

즉, 맨홀을 설치할 장소를 포크레인으로 일정 깊이 굴착한 상태에서, 굴착한 부분으로 작업자가 내려가서 콘크리트로 벽체(50) 및 슬라브(51)를 형성함과 아울러 콘크리트가 양생되면 상면에 맨홀 상부관(53)과 맨홀 뚜껑(52)을 설치하게 되는 것이다.That is, in a state in which the manhole is installed at a predetermined depth with a fork lane, the worker goes down to the excavated portion to form the wall 50 and the slab 51 with concrete, and when the concrete is cured, the manhole upper pipe ( 53) and the manhole cover 52 will be installed.

여기서, 상기한 맨홀 설치 장소를 포크레인으로 터파기할 때에는 작업자가 굴착 장소의 암석등을 제거하면서 굴착하고, 굴착한 부분을 벽체 형성에 맞도록 확장해야 한다.In this case, when the manhole installation site is to be excavated with a fork lane, the worker excavates while removing rocks and the like at the excavation site, and the excavated portion should be expanded to match the wall formation.

그러나, 상기한 바와 같이 포크레인으로 맨홀의 설치 위치를 굴착할 때 암반이 있게 되면 포크레인으로는 굴착을 하기가 어려울 뿐만 아니라 굴착한 부분이 매우 좁기 때문에 작업자가 여기에서 벽체 형성을 할 수 있도록 확장하고, 콘크리트 타설 작업을 하여 벽체와 슬라브를 형성하는 것이 매우 어렵게 되는 문제점이 있다.However, as described above, when a rock is present when excavating the installation position of the manhole with the fork-lane, the fork-lane is not only difficult to excavate but also the excavated portion is very narrow, so that the worker can expand the wall here. There is a problem that it is very difficult to form walls and slabs by concrete pouring.

따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로서, 맨홀의 설치를 위한 굴착 작업을 용이하게 함과 아울러 암반이 있어도 굴착 작업을 연속할 수 있고 작업자가 벽체등의 콘크리트 포설 작업을 용이하게 할 수 있는 상하수도 맨홀 설치용 굴착장비를 제공함에 있다.Therefore, an object of the present invention is to solve the above problems, and facilitate the excavation work for the installation of the manhole and can continue the excavation work even if there is a rock and facilitates the worker laying concrete such as walls It is to provide a drilling rig for water and sewage manhole installation.

상기한 목적을 실현하기 위하여 본 발명은, 이동장치에 힌지축으로 설치됨과 아울러 조절실린더에 의해 경사 조절 가능한 수직체결대와, 상기한 수직체결대에 수직으로 설치되어 있는 유압장치와, 상기한 유압장치의 로드에 연결되어 수직 승강하도록 구성되고 가이드에 의해 지지되어 있는 슬라이더와, 상기한 슬라이더에 연결됨과 아울러 모터가 장착되고 하단에 원통형 커버가 형성된 연결대와, 상기한 커버의 상부에 형성되고 굴착날에 의해 굴착된 흙이 외부로 배출되도록 형성된 토사배출구와, 상기한 커버에 회전 가능하게 수납됨과 아울러 모터에 의해 일정 회전 속도로 회전하도록 설치되어 흙을 상향 이동시키도록 형성된 나선상의 스크류와, 상기한 스크류의 종단에 설치되어 흙을 굴착할 수 있도록 형성된 굴착날로 구성함을 특징으로 한다.In order to realize the above object, the present invention is a vertical fastening stand which is installed on the moving device as a hinge shaft and can be tilted by an adjustment cylinder, a hydraulic device which is vertically installed on the vertical fastening stand, and the hydraulic pressure described above. A slider which is connected to the rod of the apparatus and is supported by a guide and is supported by a guide, a connecting rod connected to the slider and mounted on a motor and having a cylindrical cover at the bottom thereof, and formed on the top of the cover and a drilling blade Soil discharge port formed by the excavated soil to be discharged to the outside, and the spiral screw which is rotatably housed in the cover and installed to rotate at a constant rotational speed by a motor to move the soil upward, Installed on the end of the screw is characterized in that the excavation blade formed to excavate the soil .

도1과 도2는 본 발명에 따른 상하수도 맨홀 설치용 굴착장비를 도시한 일부 절개 측면도와 분해 사시도로서, 포크레인 또는 불도저등에 설치된 이동 장비와 같은 이동장치(1)와, 상기한 이동장치(1)에 힌지축(2)으로 설치됨과 아울러 조절실린더(3)에 의해 경사 조절 가능한 수직체결대(4)와, 상기한 수직체결대(4)에 수직으로 설치되어 있는 유압장치(5)와, 상기한 유압장치(5)의 로드(6)에 연결되어 수직 승강하도록 구성되고 가이드(7)에 의해 지지되어 있는 슬라이더(8)와, 상기한 슬라이더(8)에 연결됨과 아울러 모터(9)가 장착되고 하단에 원통형 커버(10)가 형성된 연결대(11)와, 상기한 커버(10)에 회전 가능하게 수납됨과 아울러 모터(9)에 의해 일정 회전속도로 회전하도록 설치된 나선상의 스크류(12)와, 상기한 스크류(12)의 종단에 설치되어 흙 및 암반을 굴착할 수 있도록 형성된 굴착날(13)로 이루어져 있다.1 and 2 are a partially cutaway side view and an exploded perspective view showing the excavation equipment for water and sewage manhole installation according to the present invention, the mobile device 1, such as the mobile equipment installed in the forklift or bulldozer, and the above-mentioned mobile device 1 The vertical fastening stand 4 which is installed by the hinge shaft 2 and which can be tilted by the adjustment cylinder 3, the hydraulic device 5 which is vertically installed on the vertical fastening stand 4, A slider 8 which is connected to the rod 6 of the hydraulic device 5 and is vertically elevated and supported by the guide 7, and which is connected to the slider 8 as described above and a motor 9 is mounted. A connecting rod 11 having a cylindrical cover 10 formed at a lower end thereof, a spiral screw 12 installed to be rotatably housed in the cover 10 and rotated at a predetermined rotational speed by a motor 9, and Installed at the end of one screw (12) to excavate soil and rock Consists of a drilling edge 13 is formed to be.

특히, 상기한 커버(10)의 상부에는 굴착날(13)에 의해 굴착되고 스크류(12)에 의해 상부로 이동하는 흙이 외부로 배출되도록 토사배출구(14)가 형성되어 있다.In particular, the soil discharge port 14 is formed in the upper portion of the cover 10 is excavated by the excavation blade 13 and discharged to the outside by the screw 12 to the outside.

상기한 수직체결대(4)를 지지하는 힌지축(2)에는 베어링이 설치되어 조절실린더(3)에 의해 수직체결대(4)의 경사를 조절할 때 용이하게 한다.
가이드(7)는 수직체결대(4)에 고정되며 하나 이상의 가이드공(7a)이 구비된 가이드블록(7b), 슬라이더(8)의 하부에 형성되며 가이드블록(7b)의 가이드공(7a)에 슬라이딩 가능하게 관통되어 슬라이더(8)의 승강을 안내하는 하나 이상의 가이드봉(7c)으로 이루어진다.The bearing is installed on the hinge shaft 2 supporting the vertical fastening stand 4 to facilitate the adjustment of the inclination of the vertical fastening stand 4 by the adjustment cylinder 3.
The guide 7 is fixed to the vertical fastening stand 4 and is formed at the lower portion of the guide block 7b having one or more guide holes 7a, the slider 8, and the guide hole 7a of the guide block 7b. It consists of one or more guide rods (7c) slidably penetrating to guide the lifting of the slider (8).

상기한 바와 같은 본 발명의 작용 효과를 설명하면 맨홀을 제작하기 위하여, 맨홀 설치 위치에 이동 장치를 이용할 때에는 조절실린더(3)를 사용하여 수직체결대(4)를 수평 상태로 이동장치에 위치시키게 된다.Referring to the operation and effect of the present invention as described above, in order to manufacture the manhole, when using the moving device in the manhole installation position, to adjust the vertical fastening stand (4) in the horizontal state by using the adjustment cylinder (3) do.

이 상태에서, 상기한 굴착날(13)이 굴착 위치가 되도록 하고, 상기한 조절실린더(3)를 사용하여 수직체결대(4)를 수직으로 세운 후, 상기한 굴착 위치로 굴착날(13)이 수직 상태가 되도록 정렬하게 된다.In this state, the excavation blade 13 is in the excavation position, the vertical fastening stand 4 is set up vertically using the above-described adjustment cylinder 3, and then the excavation blade 13 is in the excavation position. It will be aligned so that it is vertical.

굴착날(13)이 수직 상태가 되면 상기한 유압장치(5)를 작동시켜서 슬라이더(8) 및 연결대(11)가 하향되도록 함과 아울러 굴착날(13)이 지면에 접촉되도록 하는 바, 상기한 슬라이더(8)가 승강할 때 가이드(7)에 의해 안정적인 이동이 가능하게 된다.When the drilling blade 13 is in a vertical state, the hydraulic device 5 is operated so that the slider 8 and the connecting rod 11 are downward, and the drilling blade 13 is in contact with the ground. When the slider 8 moves up and down, the guide 7 enables stable movement.

굴착날(13)이 지면에 접촉되면 모터(9)를 작동시켜 굴착날(13)을 회전시키게 되고, 이와 동시에 유압장치(5)를 연속 작동시켜 굴착날(13)을 지면으로 가압하게 된다.When the excavation blade 13 contacts the ground, the motor 9 is operated to rotate the excavation blade 13, and at the same time, the hydraulic device 5 is continuously operated to press the excavation blade 13 to the ground.

굴착날(13)이 회전하는 상태에서 지면으로 가압되면 지면을 파고 들면서 굴착날(13)이 굴착 작업을 하게 되는 바, 상기한 굴착날(13)에 의해 파여진 흙은 나선상 스크류(12)에 의해 상향 이동하게 된다.When the excavation blade 13 is pressed to the ground in the rotating state, the excavation blade 13 is excavated while digging the ground, and the soil excavated by the excavation blade 13 is screwed into the screw 12. To move upward.

이때, 상기한 굴착 작업중 암반이 나오게 되면 상기한 굴착날(13)이 암반을 뚫고 들어가게 된다.At this time, when the rock comes out of the excavation work, the excavation blade 13 enters through the rock.

스크류(12)에 의해 상향 이동된 흙은 토사 배출구(14)를 통해 지면으로 배출됨으로써, 굴착날(13)이 흙을 파는 것을 보다 용이하게 한다.The soil moved upward by the screw 12 is discharged to the ground through the soil discharge port 14, thereby making it easier for the excavation blade 13 to dig soil.

굴착날(13)에 의해 맨홀 설치용의 구멍(A)이 형성되면 상기한 유압장치(5)를 작동시켜서 슬라이더(8) 및 연결대(11)를 상향시켜 굴착날(13)이 구멍(A)에서 빠져 나오게 함과 아울러 이동장치(1)를 이동시키게 된다.When the hole A for manhole installation is formed by the excavation blade 13, the above-mentioned hydraulic device 5 is operated to raise the slider 8 and the connecting rod 11 so that the excavation blade 13 is removed from the hole A. In addition to moving out of the mobile device (1).

이동장치(1)가 이동하게 되면 작업자가 상기한 굴착 구멍(A)에 콘크리트 타설등을 통해 벽체를 형성하게 되는 바, 상기한 굴착날(13)에 의해 형성된 구멍(A)은 수직으로 비교적 크게 형성되기 때문에 여기에서 작업자가 벽체를 형성하는 작업이 매우 용이하게 된다.When the moving device 1 moves, the worker forms a wall in the above-mentioned excavation hole A through concrete placement, and the hole A formed by the excavation blade 13 is relatively large vertically. Because it is formed, it is very easy for the worker to form the wall here.

이상과 같이 본 발명은 유압장치에 의해 승강됨과 아울러 모터에 의해 강하게 회전하는 굴착날로 맨홀 설치용 구멍을 형성하게 되면, 구멍 뚫는 도중 암반이 나타나도 굴착날이 쉽게 구멍을 뚫을 수 있을 뿐만 아니라 수직으로 깊은 구멍을 쉽게 형성함으로써 작업자가 구멍에서 용이하게 콘크리트 타설 작업등을 할 수 있는 잇점이 있는 것이다.As described above, in the present invention, when the manhole installation hole is formed by an excavation blade which is lifted and lifted by a hydraulic device and is strongly rotated by a motor, the excavation blade can be easily drilled even if a rock appears during drilling. By forming the hole easily, there is an advantage that the worker can easily perform the concrete pouring work in the hole.

Claims (1)

이동장치에 힌지축으로 설치됨과 아울러 조절실린더에 의해 경사 조절 가능한 수직체결대와, 상기한 수직체결대에 수직으로 설치되어 있는 유압장치와, 상기한 유압장치의 로드에 연결되어 수직 승강하도록 구성되는 슬라이더와, 상기한 슬라이더에 연결됨과 아울러 모터가 장착되고 하단에 원통형 커버가 형성된 연결대와, 상기한 커버의 상부에 형성되고 굴착날에 의해 굴착된 흙이 외부로 배출되도록 형성된 토사배출구와, 상기한 커버에 회전 가능하게 수납됨과 아울러 모터에 의해 일정 회전속도로 회전하도록 설치되어 흙을 상향 이동시키도록 형성된 나선상의 스크류와, 상기한 스크류의 종단에 설치되어 흙 및 암반을 굴착할 수 있도록 형성된 굴착날로 구성된 상하수도 맨홀 설치용 굴착장비에 있어서,It is installed to be vertically connected to the moving device by a hinge shaft and vertically adjustable tiltable by an adjustment cylinder, a hydraulic device installed vertically on the vertical fastener, and a rod of the hydraulic device. A slider, a connecting rod connected to the slider and mounted with a motor and having a cylindrical cover formed at the bottom thereof, a soil discharge outlet formed at an upper portion of the cover and excavated by an excavation blade to be discharged to the outside; Spiral screw is installed in the cover to be rotated at a constant rotational speed by the motor and is formed to move the soil upward, and the excavation blade formed at the end of the screw to excavate the soil and rock In the excavation equipment for the installation of water and sewage manhole, 상기 수직체결대에 고정되며 하나 이상의 가이드공이 구비된 가이드블록, 상기 슬라이더의 하부에 형성되며 상기 가이드블록의 가이드공에 슬라이딩 가능하게 관통되어 상기 슬라이더의 승강을 안내하는 하나 이상의 가이드봉으로 이루어진 가이드가 더 구성된 것을 특징으로 하는 상하수도 맨홀 설치용 굴착장비.A guide block fixed to the vertical fastening table and provided with at least one guide hole, and formed at a lower portion of the slider and slidably penetrating the guide hole of the guide block to guide the lifting and lowering of the slider. Water and sewage manhole installation drilling equipment, characterized in that further configured.
KR1020060014465A 2006-02-15 2006-02-15 Drilling machine for water suply and drainage manhole establishment KR100622142B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102649546B1 (en) 2023-08-11 2024-03-20 박정일 Soft ground digging method utilizing precast concrete casing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012948A1 (en) 1989-04-25 1990-11-01 Grenville James David Thomas Mobile drilling rig
JPH04203021A (en) * 1990-11-30 1992-07-23 Tokyu Constr Co Ltd Pile driver
JPH09209676A (en) * 1996-02-01 1997-08-12 Hideaki Watanabe Drilling vehicle
JP2000064756A (en) 1998-08-19 2000-02-29 Kinki Ishiko Kk Excavator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012948A1 (en) 1989-04-25 1990-11-01 Grenville James David Thomas Mobile drilling rig
KR920700343A (en) * 1989-04-25 1992-02-19 그렌빌 제임스 데이빗 토마스 Mobile excavator
JPH04203021A (en) * 1990-11-30 1992-07-23 Tokyu Constr Co Ltd Pile driver
JPH09209676A (en) * 1996-02-01 1997-08-12 Hideaki Watanabe Drilling vehicle
JP2000064756A (en) 1998-08-19 2000-02-29 Kinki Ishiko Kk Excavator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102649546B1 (en) 2023-08-11 2024-03-20 박정일 Soft ground digging method utilizing precast concrete casing

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