KR100772301B1 - Easy hydaulic drifter system for tunnel - Google Patents

Easy hydaulic drifter system for tunnel Download PDF

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KR100772301B1
KR100772301B1 KR1020060050141A KR20060050141A KR100772301B1 KR 100772301 B1 KR100772301 B1 KR 100772301B1 KR 1020060050141 A KR1020060050141 A KR 1020060050141A KR 20060050141 A KR20060050141 A KR 20060050141A KR 100772301 B1 KR100772301 B1 KR 100772301B1
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South Korea
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bolt
hydraulic
rock drill
shank
force generating
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KR1020060050141A
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Korean (ko)
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이정호
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이정호
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1066—Making by using boring or cutting machines with fluid jets
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)

Abstract

A hydraulic drifter structure for economical tunnel excavation is provided to reduce the number of parts, and to increase perforation accuracy by coupling a flushing head part, a rotation driving part, a connecting block part, and a striking force generating part integrally with a perforation bolt. A hydraulic drifter structure for economical tunnel excavation comprises a hydraulic motor(6), and a perforation bolt(2). The hydraulic motor rotating a shank(1) is installed to a left side or a right side of a rotation driving part(b). The perforation bolt is integrally coupled with a flushing head part(a), a rotation driving part, a connecting block part(c), and a striking force generating part(d). The perforation bolt passes through the edge on a diagonal line from the view of a cross-section of a hydraulic drifter body. The perforation bolt is placed around the diagonal edge on the shank to be passed without intruding a space necessary for the rotation-drive.

Description

경제적인 터널굴착용 유압식 착암기구조{Easy Hydaulic Drifter System For Tunnel}Economical Hydraulic Drilling Machine Structure for Tunnel Excavation {Easy Hydaulic Drifter System For Tunnel}

도 1과 도 2는 종래기술의 예로서 기존의 터널용 유압식 착암기의 외관구조와 회전구동부 내부구조를 나타내는 구조도면.1 and 2 is a structural diagram showing the external structure of the conventional hydraulic rock drill for tunnels and the internal structure of the rotary drive as an example of the prior art.

도 3은 본 발명의 기본구조를 나타내는 도면.3 is a view showing the basic structure of the present invention.

<도면의 주요부분에 대한 부호의 설명>      <Description of the symbols for the main parts of the drawings>

a : 플러싱헤드부(Flushing Head) b : 회전구동부(Rod Rotation Sys.)a: Flushing Head b: Rod Rotation Sys.

c : 연결블록부(Connecting Block) d : 타격력발생부(Hyd. Hammer)c: Connecting Block d: Hammer (Hyd.Hammer)

1 : 생크(Shank) 2 : 관통볼트(Trough Bolt)1: Shank 2: Trough Bolt

3 : 캡너트(Cap Nut) 4 : 인장볼트(Tension Bolt)3: Cap Nut 4: Tension Bolt

5 : 캡너트(Cap Nut) 6 : 유압모터(Hyd. Motor)5: Cap Nut 6: Hydraulic Motor

10 : 드라이버(Driver) 11 : 회전기어(Rotation Gear)10: Driver 11: Rotation Gear

12 : 피니언기어(Pinion Gear)12: Pinion Gear

hu : 상부높이 hl : 하부높이hu: Upper height hl: Lower height

도 4는 본 발명의 관통볼트 구조도면.4 is a structural diagram of a through bolt of the present invention.

본 발명은 터널굴착용 유압식 착암기의 구조에 관한 것이다.The present invention relates to a structure of a hydraulic rock drill for tunnel excavation.

유압식 착암기는 유압동력에 의해서 작동되며 섕크(Shank) 후단을 30~60Hz 의 초고속으로 타격하면서 섕크를 회전시켜 섕크 앞쪽 끝에 조립된 로드(Rod) 및 비트(Bit)를 통하여 암반을 천공하는 장치로 크게 지표 굴착만 가능한 일반 유압식 착암기와 지표 및 터널굴착 모두가 가능한 터널굴착용 유압식 착암기로 나눌 수 있으며 터널굴착용 착암기에 우선 요구되는 특성은 섕크의 중심으로부터 상부 최대 돌출높이 즉 상부높이가 낮아야 하는 것이다.Hydraulic rock drill is operated by hydraulic power and it is a device that drills rock through rod and bit assembled at the front end of the shank by rotating the shank while striking the rear end of the shank at very high speed of 30 ~ 60Hz. It can be divided into general hydraulic rock drilling only for surface excavation and hydraulic rock drilling for tunnel excavation capable of both surface and tunnel excavation. The first characteristic required for tunnel excavation rock drilling is that the upper maximum protrusion height from the center of the shank must be low.

터널굴착시 터널 단면의 최외곽 발파공은 이론상 터널 단면형상과 일치하도록 천공하는 것이 최적이나 착암기 자체가 일정이상의 상부높이를 가질 수밖에 없으므로 상부높이를 보정하기 위하여 착암기를 약간 경사시켜 천공하게 되며 이것은 발파 후 벽면의 요철 즉 여굴(餘堀)로 남게 된다. 만일 여기서 착암기의 상부높이가 더 커진다면 그것을 보정하기 위해 착암기를 더 많이 경사 시켜야 하고 그 결과로 발파 후 터널 벽면에는 더 큰 여굴(餘堀)이 발생하여 터널굴착작업효율이 크게 저하되어 곤란해 진다.In tunnel excavation, the outermost blast hole in the tunnel section is theoretically best to be drilled to match the tunnel cross-sectional shape, but the rock drill itself must have a certain upper height, so the rock drill is inclined slightly to compensate for the upper height. Unevenness, or overhang, on the wall remains. If the upper height of the rock drill becomes larger, the rock drill should be inclined more to compensate for it, and as a result, after the blasting, a large overburden occurs on the tunnel wall, which makes the tunnel excavation work efficiency much lower and difficult. .

따라서 기존의 터널굴착용 유압식 착암기들은 이러한 상부높이를 낮추기 위해 복잡한 형상과 구조로 만들어지고, 상부높이를 낮춤에 따른 하부높이의 증가와 그로 인한 천공정확도 저하까지 감수하고 만들어지고 있다. Therefore, the conventional rock drills for tunnel excavation are made of a complicated shape and structure to lower the upper height, and are made to increase the lower height and lower the process accuracy by reducing the upper height.

도 1은 기존 유압식 착암기의 일반적인 구조를 나타낸 것으로 그 구조는 크게 플러싱헤드부(a), 회전구동부(b), 연결블록부(c), 타격발생부(d)들의 부분조립 체로 구성되고 착암기 앞쪽 끝에는 섕크(1)가 플러싱헤드부(a)를 관통하여 회전구동부(b) 내부까지 들어와 있으며 각각의 부분조립체들은 2 개의 관통볼트(2)와 캡너트(3) 및 4 개의 인장볼트(4)및 캡너트(5)로 상호 체결되며 회전구동용 유압모터(6)는 착암기의 뒤쪽 끝 아래에 조립되어 있다. 여기서 관통볼트(2)는 섕크및 내부 소모성 부품 교환을 위해 수시로 분해조립이 필요함에 따라 개수를 최소화하고 있으며 또 천공시의 고속충격에 대하여 충분한 피로강도를 가질 수 있도록 일정 이상의 길이를 가진 충격볼트 형상으로 되어 있다.1 shows a general structure of a conventional hydraulic rock drill, the structure of which is largely composed of a subassembly of a flushing head part (a), a rotary driving part (b), a connecting block part (c), and a hitting part (d) and the front of the rock drill. At the end, a shank (1) penetrates the flushing head part (a) and into the rotary drive part (b). Each subassembly consists of two through bolts (2), a cap nut (3) and four tension bolts (4). And the cap nut (5) is fastened to each other and the rotary drive hydraulic motor (6) is assembled under the rear end of the rock drill. Here, the through bolt (2) minimizes the number of parts as necessary to disassemble and replace the shank and internal consumable parts from time to time, and the impact bolt shape having a predetermined length or more to have a sufficient fatigue strength against high-speed impact during drilling It is.

도 2는 기존 유압식 착암기의 회전구동부(b)의 내부구조를 나타낸 것으로 착암기 앞쪽 끝단에서 플러싱헤드부(a)를 관통하고 있는 섕크(1)의 스플라인부(s) 앞에는 이동공간(t)을 두고 멈춤 링(13)이 위치하고 있으며 스플라인부(s) 뒷면은 척(14)과 부시(15)가 차례로 지지하고 있고 섕크(1)의 후단에는 램(16)의 앞쪽 끝단이 위치하고 있어 램(16)이 섕크(1)의 후단을 타격하면 섕크(1)는 앞으로 이동공간(t)을 이동하면서 천공하게 된다. 섕크(1)의 과도한 이동이 있을 경우 멈춤 링(13)에 의해 정지되며 이때 발생 되는 충격은 관통볼트(2)에 의해 지지가 된다. 섕크 스플라인부(s)의 측면은 드라이버(10)와 조립되어 있고 드라이버(10)는 다시 회전기어(11)에 스플라인형태로 조립되어 있다. 회전기어(11)는 앞과 뒤의 베어링(19, 20)에 의해 지지가 되고 아래의 피니언로드(12)에 의해 구동되며 피니언로드(12)는 중간연결블록부(c)과 타격력발생부(d)를 관통하여 뒤쪽 아래 끝에 있는 유압모터(6)에 연결되어있어서 유압모터(6)가 회전하면 피니언로드(12), 회전기어(11), 드라이버(10)를 거쳐 섕크(1)가 회전하는 구조로 되어있다.Figure 2 shows the internal structure of the rotary drive part (b) of the existing hydraulic rock drill, the movement space (t) in front of the spline portion (s) of the shank (1) passing through the flushing head (a) at the front end of the rock drill The stop ring 13 is located, and the back side of the spline portion s is supported by the chuck 14 and the bush 15 in turn, and the front end of the ram 16 is located at the rear end of the shank 1 and thus the ram 16. When the rear end of the shank 1 is hit, the shank 1 moves while moving the moving space t forward. If there is excessive movement of the shank (1) is stopped by the stop ring (13) and the impact generated at this time is supported by the through bolt (2). The side surface of the shank spline part s is assembled with the driver 10, and the driver 10 is assembled in the spline form to the rotating gear 11 again. The rotary gear 11 is supported by the front and rear bearings 19 and 20 and driven by the lower pinion rod 12, and the pinion rod 12 is the intermediate connecting block portion c and the striking force generating portion ( d) is connected to the hydraulic motor (6) at the lower rear end. When the hydraulic motor (6) rotates, the shank (1) rotates through the pinion rod (12), the rotary gear (11), and the driver (10). It is structured to.

이상과 같은 기존의 유압식 착암기들의 구조는 낮은 상부높이(hu)를 확보하는 대가로 작동구조가 복잡하고, 각각의 부분조립체들의 하우징(housing)의 형상이 크고 복잡하며, 뒤쪽 아래 끝에 설치된 유압모터를 연결하기 위하여 중간의 부분조립체 전부가 관통되고 하부높이(hl)가 높아져 있어 제작이 어렵고 고장발생요소가 많으며 천공정확도가 떨어지게 된다. 따라서 보다 단순하고도 효과적인 구조로 제작이 쉽고 천공정확도가 높은 유압식 착암기의 발명을 필요로 한다. Existing hydraulic rock drills as described above have a complicated operation structure at the cost of securing a low upper height (hu), a large and complex shape of the housing of each subassembly, and a hydraulic motor installed at the rear lower end. In order to connect, all the intermediate subassemblies are penetrated and the lower height (hl) is high, which makes the manufacturing difficult, causes many failure factors, and reduces the fabrication process accuracy. Therefore, the invention requires a invention of a hydraulic rock drill with a simple and effective structure and easy fabrication and high processing accuracy.

본 발명은 구조가 단순하고 부품 수가 적어 제작이 쉽고 천공정확도가 높은 지하굴착용 유압식 착암기의 구성을 주목적으로 한다.The present invention mainly aims at the construction of a hydraulic rock drill for underground excavation, which has a simple structure and a small number of parts, which is easy to manufacture, and has a high process accuracy.

본 과제를 달성하기 위하여 회전구동용 유압모터의 설치위치가 변경된 새로운 회전구동구조 및 그것에 적합한 관통볼트와 체결구조의 고안을 통하여 각각의 주요부분조립체의 하우징(Housing) 형상을 단순화하고, 전체적인 부품개수를 줄이며, 하부높이를 낮춰서 제작이 쉽고 고장발생률이 낮으며 천공정확도가 높은 유압식 착암기의 제공을 목적으로 한다. In order to achieve this problem, the new rotating drive structure has been changed and the through bolt and fastening structure suitable for the rotary motor hydraulic motor have been changed, and the housing shape of each major subassembly is simplified, and the total number of parts is reduced. It aims to provide a hydraulic rock drill with a low height and easy to manufacture by lowering the lower height and having a low failure rate and high processing accuracy.

본 발명은 도 3에서 보는 것과 같이 플러싱헤드부(a), 회전구동부(b), 연결블록부(c), 타격력발생부(d) 들의 부분조립체로 구성되고 착암기 앞쪽 끝에는 섕크(1)가 플러싱헤드부(a)를 관통하여 회전구동부(b) 내부에 조립되어 있으며 회전구동부(b)의 측면에 회전구동용 유압모터(6)가 조립된다. The present invention is composed of a partial assembly of the flushing head portion (a), the rotary drive portion (b), the connection block portion (c), the impact force generating portion (d) as shown in Figure 3 and the shank (1) at the front end of the rock drill Through the head portion (a) is assembled inside the rotary drive (b) and the rotary drive hydraulic motor (6) is assembled on the side of the rotary drive (b).

각각의 부분조립체들은 착암기 전방에서 볼 때 대각선상의 모서리 2곳에 위 치한 특수한 형태의 관통볼트(2)에 의해 체결된다. 관통볼트(2)는 도 4에서 보는 것과 같이 기존 유압식 착암기의 관통볼트와 인장볼트가 하나로 합쳐진 형태로 볼트 중앙에 나사부 보다 굵은 지름의 단을 만들어 일반볼트에서의 머리역할을 하도록 하고 그 단의 앞과 뒤 모두에 나사부를 두어 단의 앞 부분은 회전구동부(b)와, 플러싱헤드부(a)에 순차적으로 삽입하여 캡너트(3)로 체결하고 단의 뒷부분은 2 개의 인장볼트(4)와 함께 연결블록부(c), 타격력발생부(d) 순으로 조립하여 캡너트(5)로 체결된다.Each subassembly is fastened by a specially shaped through bolt (2) located at two diagonal corners when viewed from the front of the rock drill. The through bolt (2) is a combination of the through bolt and tension bolt of the conventional hydraulic rock drill as shown in Figure 4 in the form of a thicker diameter than the threaded portion in the center of the bolt to act as a head in the general bolt and the front of the stage Screws are placed on both the rear and the rear, and the front part of the end is sequentially inserted into the rotating drive part (b) and the flushing head part (a) and fastened with the cap nut (3). The rear part of the end is provided with two tension bolts (4) and Together with the connecting block portion (c), the strike force generating portion (d) in order to be fastened to the cap nut (5).

회전구동부(b)의 내부에는 '단면 A-A'에서와 같이 생크(1)의 스플라인부를 중심으로 드라이버(10), 회전기어(11)가 각각 스플라인 형태로 상대 조립되고 회전기어의 측면에 피니언기어(12)가 맞물려서 조립되어 피니언기어(12)를 유압모터(6)가 회전시키면 섕크(1)가 회전하게 된다. 관통볼트(2)는 섕크(1)를 중심으로 대각선상의 모서리 부근에 위치하여 회전구동에 필요한 공간을 침범하지 않고 통과하고 있다.Inside the rotary drive part b, the driver 10 and the rotary gear 11 are assembled relative to each other in the form of a spline around the spline portion of the shank 1, as shown in the section A-A, and the pinion is disposed on the side of the rotary gear. When the gear 12 is engaged and assembled so that the pinion gear 12 rotates the hydraulic motor 6, the shank 1 rotates. The through-bolt 2 is located near the shank 1 around the diagonal edge and passes through the space required for rotational driving without invading.

위와 같은 구조로 하여 관통볼트(2)가 충격 피로강도를 얻기 위한 충분한 길이가 확보된 상태에서 유압모터를 착암기 측면에 설치하여 낮은 상부높이(hu)와 함께 낮은 하부높이(hl)를 확보할 수 있고, 각부 단면형상도 사각형을 기초한 단순한 형태가 되었다. 따라서 기존의 유압식 착암기에서의 복잡한 작동구조, 피니언로드의 관통을 위한 관통구멍과 복잡한 단면형상, 높은 하부높이와 그로 인한 천공정확도의 저하 등으로부터 탈피할 수 있게 되었다. With the above structure, a hydraulic motor can be installed on the side of the rock drill in a state where the through bolt 2 has a sufficient length to obtain the impact fatigue strength, thereby securing a low lower height (hl) with a lower upper height (hu). In addition, the cross-sectional shape of each part also became a simple form based on a rectangle. Therefore, it is possible to escape from the complicated operation structure of the conventional hydraulic rock drill, through-hole and complicated cross-sectional shape for penetrating the pinion rod, high bottom height and the resultant decrease in the fabrication process accuracy.

이상에서 설명한 것과 같이 본 발명은 제작이 어려운 기존의 유압식 착암기에 새로운 회전구동구조와 체결구조를 적용 함으로서 내부구조 및 각부 단면형상을 단순화하고 하부높이(hl)를 낮추어 제작이 쉽고, 부품 수가 적으며, 굴착정확도가 높은 유압식 착암기를 제공한다.As described above, the present invention simplifies the internal structure and the cross-sectional shape of each part by lowering the height of the lower part (hl) by applying a new rotary drive structure and a fastening structure to an existing hydraulic rock drill, which is difficult to manufacture, and reduces the number of parts. In addition, it provides a hydraulic rock drill with high drilling accuracy.

Claims (2)

유압식 착암기에 있어서In the hydraulic rock drill 생크(1)를 회전구동하기 위한 유압모터(6)가 회전구동부(b)의 좌측 또는 우측의 어느 한쪽 측면에 설치되고 플러싱헤드부(a)와 회전구동부(b), 연결블록부(c), 타격력발생부(d)를 일체로 체결하기 위한 관통볼트(2)가 착암기 몸체의 횡단면에서 볼 때 대각선상의 모서리 부근을 통과하는 구조를 특징으로 하는 유압식 착암기.A hydraulic motor 6 for rotationally driving the shank 1 is installed on either side of the left or right side of the rotary drive part b, and the flushing head part a, the rotary drive part b, and the connection block part c. , Hydraulic rock drill, characterized in that the through-bolt (2) for fastening the impact force generating portion (d) integrally passes near the diagonal corner when viewed in the cross section of the rock drill body. 청구항 1에 있어서;The method according to claim 1; 플러싱헤드부(a)와 회전구동부(2), 연결블록부(c), 타격력발생부(d)를 일체로 체결하기 위한 관통볼트(2)의 구조에 있어서,In the structure of the through-bolt (2) for integrally fastening the flushing head portion (a), the rotary drive unit (2), the connecting block portion (c), the impact force generating portion (d), 두 개의 볼트를 머리부를 공유하도록 합친 것과 같은 형태로 하여 볼트 중앙에 나사부 보다 굵은 지름의 단을 만들어 일반 볼트에서의 볼트 머리 역할을 하도록 하고 그 단의 앞과 뒤 모두에 나사부를 두어 단의 앞과 뒤의 일측에 플러싱헤드부(a)와 회전구동부(b), 나머지 일측에 연결블록부(c), 타격력발생부(d)를 각각 조립하여 너트로 체결하는 구조를 특징으로 하는 관통볼트(2)를 포함하는 유압식 착암기.The two bolts have the same shape as the head joints, making a thicker end than the thread in the center of the bolt to act as a bolt head in the general bolt. Through bolts (2) characterized in that the assembly of the flushing head portion (a) and the rotational drive portion (b) on one side of the rear, the connecting block portion (c), the striking force generating portion (d) on the other side and fastening with a nut (2) Hydraulic rock drill comprising).
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160074973A (en) 2014-12-19 2016-06-29 장명수 Hitting body for hydraulic percussion apparatus
US9988843B2 (en) 2012-07-03 2018-06-05 Il Jae Lee Impact body for hydraulic impact device
CN109365376A (en) * 2018-12-19 2019-02-22 中铁工程装备集团有限公司 The rotary flushing device of shield machine
CN110056363A (en) * 2019-04-19 2019-07-26 中国矿业大学 A kind of solid rock lane rock tunnel(ling) machine of hobboing cutter active rotation

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JP2000110473A (en) 1998-10-06 2000-04-18 Furukawa Co Ltd Impact drilling device
JP2006068899A (en) 2004-09-03 2006-03-16 Sandvik Tamrock Oy Rock breaking machine and lubricating method

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KR20000010132A (en) * 1998-07-30 2000-02-15 장명수 Strike exercise device
JP2000110473A (en) 1998-10-06 2000-04-18 Furukawa Co Ltd Impact drilling device
JP2006068899A (en) 2004-09-03 2006-03-16 Sandvik Tamrock Oy Rock breaking machine and lubricating method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9988843B2 (en) 2012-07-03 2018-06-05 Il Jae Lee Impact body for hydraulic impact device
KR20160074973A (en) 2014-12-19 2016-06-29 장명수 Hitting body for hydraulic percussion apparatus
CN109365376A (en) * 2018-12-19 2019-02-22 中铁工程装备集团有限公司 The rotary flushing device of shield machine
CN109365376B (en) * 2018-12-19 2023-07-04 中铁工程装备集团有限公司 Rotary flushing device of shield machine
CN110056363A (en) * 2019-04-19 2019-07-26 中国矿业大学 A kind of solid rock lane rock tunnel(ling) machine of hobboing cutter active rotation
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