KR200361250Y1 - a coupler for rockbolt - Google Patents
a coupler for rockbolt Download PDFInfo
- Publication number
- KR200361250Y1 KR200361250Y1 KR20-2004-0014896U KR20040014896U KR200361250Y1 KR 200361250 Y1 KR200361250 Y1 KR 200361250Y1 KR 20040014896 U KR20040014896 U KR 20040014896U KR 200361250 Y1 KR200361250 Y1 KR 200361250Y1
- Authority
- KR
- South Korea
- Prior art keywords
- lock bolt
- plate
- hole
- tube
- convex portion
- Prior art date
Links
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
본 고안은 압력부재인 플레이트에 누두형상의 지지관체를 용접하여 플레이트와 지지관체를 일체화시킴으로써 이의 제조효율을 크게 향상시킴은 물론이고, 지지관체에 플레이트를 정확하게 위치하고 있기 때문에 록크볼트가 지지관체에 삽입된 튜브의 정중앙으로 위치하여 시멘트접합 액상 모르타르를 균일하게 분포, 경화함으로써 록크볼트의 결합강도를 더욱 강화할 수 있도록 한 록크볼트용 체결장치에 관한 것으로서,The present invention not only greatly improves the manufacturing efficiency by welding the nipple-shaped support tube to the plate, which is the pressure member, but also integrates the plate and the support tube, and the lock bolt is inserted into the support tube because the plate is accurately positioned. It is located in the center of the tube, and evenly distributed and hardened cement-bonded liquid mortar by the lock bolt fastening device to further strengthen the bond strength of the lock bolt,
특히, 본 고안은 그 중앙에 상부로 다소 솟은 볼록부가 형성되며, 상기 볼록부의 정중앙에 록크볼트가 관통되는 관통공이 형성되고, 상기 관통공의 일측에 모르타르관이 삽입되는 주입공이 형성되며, 상기 관통공의 다른 일측에 천공 내부의 공기를 외부로 배출하는 공기배출공이 형성되어진 원판상의 플레이트와; 상기 플레이트의 볼록부의 저면에 용접설치되면서 그 하단부에 록크볼트의 외주연으로 설치되어진 튜브가 밀폐가능하게 설치되는 누두 형상의 지지관체와; 상기 플레이트의 관통공 상부로 관통된 록크볼트에 체결되는 체결너트; 등으로 구성된 것을 특징으로 한 것이다.Particularly, the present invention has a convex portion that is formed to rise slightly in the center thereof, a through hole through which the lock bolt is formed in the center of the convex portion is formed, and an injection hole through which a mortar tube is inserted is formed at one side of the through hole. A disc-shaped plate on which the other side of the ball is formed an air discharge hole for discharging the air inside the perforation; A nut head-shaped support tube which is welded to the bottom surface of the convex portion of the plate and is installed to seal the tube installed at the lower end of the plate with the outer circumference of the lock bolt; A fastening nut fastened to the lock bolt penetrated through the upper portion of the through hole of the plate; It is characterized by consisting of.
Description
본 고안은 록크볼트용 체결장치에 관한 것으로서, 더욱 상세하게는 록크볼트에 체결장치를 효과적으로 체결할 수 있도록 한 록크볼트용 체결장치에 관한 것이다.The present invention relates to a fastening device for a lock bolt, and more particularly to a fastening device for a lock bolt to enable fastening the fastening device to the lock bolt.
주지된 바와 같이, 터널내 등에서 록크볼트에 의해 영구적 안전조치를 취할 때, 부식방지가 요구된다. 이를 위해 시멘트접합 액상 모르타르(cementing grout) 가압주입 또는 시멘트 액상 모르타르 주입(cement grouting)에 의해 완전히 몰드 처리할 수도있다. 볼트는 통상적으로 고온아연도금하거나 분체도장한다.As is well known, corrosion protection is required when taking permanent safety measures by lock bolts in tunnels and the like. For this purpose, it may be completely molded by cement-bonded liquid mortar (cementing grout) injection or cement liquid mortar (cement grouting). Bolts are typically hot galvanized or powder coated.
부식방지에 관한 어떤 요건이 없을 경우, 작업장 안전에 이용되는 볼트의 사용과 고착력(fastening)을 높이고 부식방지를 확실히 하기 위해 뒤따르는 시멘트 접합을 조합시키는 것이 바람직하다.In the absence of any requirements on corrosion protection, it is desirable to combine the use of bolts used for workplace safety with the subsequent cement joints to increase fastening and ensure corrosion protection.
이를 위해 내측단부에 확장 부싱(expansion bushing)을 가지는 튜브형 볼트가 사용되어 왔다. 문제점에 대한 이러한 해결책은 추후에 시멘트접합을 해도 되지만, 튜브형 볼트의 가격이 강철볼트의 대략 2배이므로 비용이 비싸다. 이에 더하여, 이 해결책은 부정확한 액상 모르타르 점도(grout consistency)에 대해 민감하다 (불안정하다).For this purpose tubular bolts with expansion bushings at the inner ends have been used. This solution to the problem may be cemented later, but the cost is high because tubular bolts are approximately twice the price of steel bolts. In addition, this solution is sensitive (unstable) to inaccurate liquid mortar consistency.
시멘트 주입호스와 배기튜브를 사용하여 강철로드를 후처리하는 것이 제안되어 있다. 이 강철로드는 확장 부싱에 의해, 또는 예를 들어 폴리에스터 통 (cartridge)과 같은 플라스틱 모르타르 주입에 의해 그 내측단부가 고정된다. 아울러, 구멍의 바닥부까지 배기튜브가 삽입되는 한편 시멘트 주입호스가 구멍속으로 대략 25cm 삽입된다. 다음으로, 구멍의 외측부분은 시멘트접합 액상 모르타르를 주입하기 전에 밀봉기포(sealing foam)에 의해 밀봉된다. 그리고, 구멍내의 공기는배기튜브를 통해 배출된다.Post treatment of steel rods using cement injection hoses and exhaust tubes has been proposed. This steel rod is fixed at its inner end by expansion bushings or by injection of plastic mortar, for example a polyester cartridge. In addition, the exhaust tube is inserted to the bottom of the hole while the cement injection hose is inserted into the hole approximately 25 cm. Next, the outer part of the hole is sealed by a sealing foam before injecting the cement bonded liquid mortar. And, the air in the hole is discharged through the exhaust tube.
이러한 시멘트접합은 추가적인 체결시간를 필요로 하고, 밀봉기포를 사용하는 불량밀봉에 의해 약화된다. 이로 인해 구멍이 채워지기 전에 누설(leakage)이 일어나고, 볼트의 일부가 시멘트접합 액상 모르타르에 의해 덮여지지 아니한다.Such cement bonding requires additional fastening time and is weakened by poor sealing using sealing bubbles. This causes a leak before the hole is filled and some of the bolts are not covered by the cemented liquid mortar.
그래서, 근자에 보다 값싼 장비를 사용하여 록크볼트를 체결할 수 있도록 하고, 불량고착 작업에 의해 야기된 볼트결함에 따른 파손을 방지할 수 있는 록크볼트용 체결기구(대한민국 특허 등록번호 311357호)가 개발되었던 바, 상기 체결기구의 구성을 도 1 및 도2에 의거하여 상세히 설명하면 나사산 부분(13)위의 확장 부싱(14) 및 암벽(19)에 밀어붙이기 위해 외측단부에 형성된 와셔 형상의 압력부재(18)와 같은 고정부재와, 외측나사산부분(15)에 끼워져 고착력증대 및 부식방지를 목적으로 암벽과 록크볼트 사이의 공동을 채우기 위한 시멘트접합 액상 모르타르 공급용 위한 개구부를 가지는 지지요소(17)에 대해 밀어붙여 지는 너트(16)를 포함하는 체결기구에 있어서, 상기 록크볼트(12)에 적어도 그 자유장(free length)의 최대치를 초과하여 뻗어 있으며, 암벽구멍의 내측단부에 시멘트접합 액상 모르타르를 공급하고 암벽구멍으로부터 공기를 배출하기 위한 튜브(23)가 구비된 것이다.Therefore, a lock bolt fastening mechanism (Korea Patent Registration No. 311357) that can lock bolts using cheaper equipment to the roots and prevent damage caused by bolt defects caused by bad fixing operations As described above, the structure of the fastening mechanism is described in detail with reference to FIGS. 1 and 2. The pressure in the form of a washer is formed at the outer end to push against the expansion bushing 14 and the rock wall 19 on the threaded portion 13. A support element having a fixing member such as member 18 and an opening for supplying cement-bonded liquid mortar for filling the cavity between the rock wall and the lock bolt for the purpose of increasing adhesion and preventing corrosion by being fitted to the outer threaded portion 15 ( 17. A fastener comprising a nut 16 pushed against 17, wherein the rock bolt 12 extends at least beyond the maximum of its free length and is a rock wall. Is supplied to the liquid cement mortar joint in the inner end portion of the yoke and provided with a tube 23 for discharging the air from the rock hole.
그리고, 압력부재(18)를 마주보는 구형표면이 있는 지지요소(17)를 가지며, 상기 지지요소(17)는 시멘트접합 액상 모르타르용 공급라인과 튜브의 내측단부 사이의 연결을 제공하고, 상기 지지요소(17)가 구형조개 형상이고 상기 튜브(23)용나사산 개구부(23)를 가지며, 상기 튜브(23)의 적어도 외측단부에 외측나사산이 형성되고, 상기 지지요소(17)가 시멘트접합 액상 모르타르의 공급을 위해, 나사산이 형성될 수도 있는, 구멍(27)을 가진 것이다.And a support element 17 having a spherical surface facing the pressure member 18, said support element 17 providing a connection between the supply line for cement-bonded liquid mortar and the inner end of the tube, The element 17 has a spherical clam shape and has a threaded opening 23 for the tube 23, an external thread is formed at at least an outer end of the tube 23, and the support element 17 is cement-bonded liquid mortar. For the supply of, with a hole 27, threads may be formed.
그러나, 종래의 록크볼트의 체결기구는 압력부재(18)와 대응되는 지지요소(17)가 구형표면을 가지고 있기 때문에 상기 지지요소(17)의 제작이 극히 번거로울 뿐만 아니라, 압력부재(18)와 지지요소(17)의 틈새로 시멘트접합 액상 모르타르가 누설되며, 구형상의 지지요소(17)에 압력부재(18)를 정확하게 위치시키기가 어려워 록크볼트(12)가 지지요소(17)에 삽입된 튜브(23)의 정중앙으로 위치하지 못하고 튜브(23)의 일측으로 치우침으로써 시멘트접합 액상 모르타르의 불균일로 록크볼트의 결합강도가 크게 감소되는 등의 많은 문제점이 있었다.However, in the conventional lock bolt fastening mechanism, since the support element 17 corresponding to the pressure member 18 has a spherical surface, the manufacturing of the support element 17 is extremely cumbersome, and the pressure member 18 and The cement-bonded liquid mortar leaks through the gap of the support element 17, and it is difficult to accurately position the pressure member 18 in the spherical support element 17, so that the lock bolt 12 is inserted into the support element 17. There is a lot of problems, such as the bond strength of the lock bolt is greatly reduced due to the non-uniformity of the cement-bonded liquid mortar by being biased to one side of the tube (23) rather than located in the center of the (23).
따라서, 본 고안은 상기와 같은 문제점을 감안하여 안출한 것으로서 압력부재인 플레이트에 누두형상의 지지관체를 용접하여 플레이트와 지지관체를 일체화시킴으로써 이의 제조효율을 크게 향상시킴은 물론이고, 지지관체에 플레이트를 정확하게 위치하고 있기 때문에 록크볼트가 지지관체에 삽입된 튜브의 정중앙으로 위치하여 시멘트접합 액상 모르타르를 균일하게 분포, 경화함으로써 록크볼트의 결합강도를 더욱 강화할 수 있도록 한 록크볼트용 체결장치를 제공함에 그 목적이 있다.Therefore, the present invention has been made in view of the above problems, and welds a nutshell-shaped support tube to a plate which is a pressure member to integrate the plate and the support tube to greatly improve its manufacturing efficiency, as well as the plate to the support tube. Since the lock bolt is located at the center of the tube inserted into the support tube, the lock bolt is fastened to uniformly distribute and cure the cement bonded liquid mortar, thereby providing a locking device for the lock bolt to further strengthen the bond strength of the lock bolt. There is a purpose.
도 1은 종래 기술에 따른 록크볼트와 체결장치의 결합상태를 보인 단면도,1 is a cross-sectional view showing a coupling state of the lock bolt and the fastening device according to the prior art,
도 2는 도 1의 요부를 발췌도시한 단면도,2 is a cross-sectional view showing the main portion of Figure 1;
도 3은 본 고안에 따른 체결장치의 분해사시도,3 is an exploded perspective view of a fastening device according to the present invention,
도 4는 본 고안에 따른 록크볼트와 체결장치의 결합상태를 보인 단면도,Figure 4 is a cross-sectional view showing a coupling state of the lock bolt and the fastening device according to the present invention,
도 5는 본 고안에 따른 록크볼트와 체결장치의 요부 단면도.Figure 5 is a cross-sectional view of the main part of the lock bolt and the fastening device according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
100:체결장치 110:플레이트100: fastening device 110: plate
111:볼록부 112:관통공111: Convex part 112: Through hole
113:주입공 114:공기배출공113: injection hole 114: air discharge ball
120:지지관체 121:이음관120: support pipe 121: joint pipe
200:천공 300:록크볼트200: perforation 300: lock bolt
400:모르타르관400: mortar tube
상기와 같은 목적을 달성하기 위한 본 고안은 암벽의 천공에 설치되어진 록크볼트에 체결되어 시멘트접합 액상 모르타르를 튜브로 주입함과 동시에 천공 내부의 공기를 외부로 배출하는 록크볼트용 체결장치를 형성함에 있어서, 그 중앙에 상부로 다소 솟은 볼록부가 형성되며, 상기 볼록부의 정중앙에 록크볼트가 관통되는 관통공이 형성되고, 상기 관통공의 일측에 모르타르관이 삽입되는 주입공이 형성되며, 상기 관통공의 다른 일측에 천공 내부의 공기를 외부로 배출하는 공기배출공이 형성되어진 원판상의 플레이트와; 상기 플레이트의 볼록부의 저면에 용접설치되면서 그 하단부에 록크볼트의 외주연으로 설치되어진 튜브가 밀폐가능하게 설치되는 누두 형상의 지지관체와; 상기 플레이트의 관통공 상부로 관통된 록크볼트에 체결되는 체결너트; 등으로 구성된 것을 특징으로 한다.The present invention for achieving the above object is fastened to the lock bolt installed in the rock wall perforations to form a lock bolt fastening device for injecting cement-bonded liquid mortar into the tube and at the same time to discharge the air inside the perforation In the center, a convex portion which rises slightly upward is formed in the center thereof, a through hole through which the lock bolt penetrates is formed in the center of the convex portion, and an injection hole into which a mortar tube is inserted is formed at one side of the through hole, and the other of the through hole. A plate-shaped plate on which one side of the air discharge hole for discharging the air inside the perforation is formed; A nut head-shaped support tube which is welded to the bottom surface of the convex portion of the plate and is installed to seal the tube installed at the lower end of the plate with the outer circumference of the lock bolt; A fastening nut fastened to the lock bolt penetrated through the upper portion of the through hole of the plate; And the like.
이하, 본 고안의 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.
도 3은 본 고안에 따른 체결장치의 분해사시도이고, 도 4는 본 고안에 따른 록크볼트와 체결장치의 결합상태를 보인 단면도이며, 도 5는 본 고안에 따른 록크볼트와 체결장치의 요부 단면도이다.Figure 3 is an exploded perspective view of the fastening device according to the present invention, Figure 4 is a cross-sectional view showing a coupling state of the lock bolt and the fastening device according to the present invention, Figure 5 is a cross-sectional view of the main part of the lock bolt and the fastening device according to the present invention. .
암벽의 천공(200)에 설치되어진 록크볼트(300)에 체결되어 시멘트접합 액상 모르타르를 튜브(130)로 주입함과 동시에 천공(200) 내부의 공기를 외부로 배출하는 록크볼트용 체결장치(100)를 형성함에 있어서,Fastening device for lock bolts 100 that is fastened to the lock bolts 300 installed in the perforation 200 of the rock wall and injects cement-bonded liquid mortar into the tube 130 and simultaneously discharges the air in the perforations 200 to the outside. In forming),
먼저, 상기 천공(200)을 차단하는 플레이트(110)는 그 중앙에 상부로 다소 솟은 볼록부(111)가 형성되며, 상기 볼록부(111)의 정중앙에 록크볼트(300)가 관통되는 관통공(112)이 형성되고, 상기 관통공(112)의 일측에 모르타르관(400)이 삽입되는 주입공(113)이 형성되며, 상기 관통공(112)의 다른 일측에 천공(200) 내부의 공기를 외부로 배출하는 공기배출공(114)이 형성된다.First, the plate 110 for blocking the perforation 200 is formed in the center of the convex portion 111 is somewhat raised to the upper portion, the through hole through which the lock bolt 300 is penetrated in the center of the convex portion 111 An injection hole 113 in which a mortar tube 400 is inserted is formed at one side of the through hole 112, and air in the perforation 200 is formed at the other side of the through hole 112. The air discharge hole 114 for discharging the outside is formed.
그리고, 상기 플레이트(110)의 볼록부(111)의 저면에 용접설치되는 지지관체(120)는 그 상단부가 확개된 깔때기 형상이고, 그 하단부의 이음관(121)에는 록크볼트(300)의 외주연으로 소정 간극을 유지하면서 설치되어진 튜브(130)의 상단부가 밀폐가능하게 설치된다.In addition, the support pipe 120 welded to the bottom surface of the convex portion 111 of the plate 110 has a funnel shape with its upper end expanded, and the outer side of the lock bolt 300 is connected to the joint pipe 121 at the lower end thereof. The upper end of the tube 130, which is installed while maintaining a predetermined gap around the periphery, is installed to be sealed.
한편, 상기 플레이트(110)의 관통공(112) 상부로 관통하여 돌출된 록크볼트(300)에 체결너트(140)가 체결되어 록크볼트(300)로부터 플레이트(110)가 이탈하는 것을 방지하게 된다.On the other hand, the fastening nut 140 is fastened to the lock bolt 300 protruding upward through the through hole 112 of the plate 110 to prevent the plate 110 from being separated from the lock bolt 300. .
미설명 부호 500은 록크볼트(300)를 천공(200)에 고정시키기 위한 고정구이다.Reference numeral 500 is a fixture for fixing the lock bolt 300 to the perforation 200.
이하, 상기와 같이 구성된 록크볼트용 체결장치(100)의 작용효과를 설명하면 다음과 같다.Hereinafter, the operational effects of the locking device for the lock bolt 100 configured as described above are as follows.
먼저, 암벽에 소정 깊이의 천공(200)을 형성한 다음, 상기 천공(200)에 록크볼트(300)를 삽입하게 되는데, 이때 상기 록크볼트(300)의 끝단부에는 고정구(500)가 설치되어 천공(200)에 장착된다.First, a perforation 200 having a predetermined depth is formed in the rock wall, and then the lock bolt 300 is inserted into the perforation 200. In this case, the fixing part 500 is installed at the end of the lock bolt 300. It is mounted to the perforation 200.
그런 다음, 도 4와 같이 상기 록크볼트(300)의 외주연에 튜브(130)을 설치하고, 상기 록크볼트(300)에 체결장치(100)인 플레이트(110)의 관통공(112)을 관통시킨 다음, 상기 플레이트(110) 하부로 용접된 지지관체(120)의 이음관(121)을 록크볼트(300)의 외주연으로 설치되어진 튜브(130)의 상단부와 밀폐가능하게 결합한다.Then, a tube 130 is installed on the outer circumference of the lock bolt 300 as shown in FIG. 4, and passes through the through hole 112 of the plate 110, which is the fastening device 100, to the lock bolt 300. After that, the joint pipe 121 of the support pipe body 120 welded to the bottom of the plate 110 is coupled to the upper end of the tube 130 installed in the outer circumference of the lock bolt 300 to be sealed.
상기 이음관(121)과 튜브(130)가 결합되면, 상기 플레이트(110)의 관통공(112) 상부로 관통하여 돌출된 록크볼트(300)에 체결너트(140)를 체결하여 록크볼트(300)로부터 플레이트(110)가 이탈하는 것을 방지한다.When the joint pipe 121 and the tube 130 are coupled to each other, the locking nut 140 is fastened to the lock bolt 300 protruding through the upper portion of the through hole 112 of the plate 110 to lock bolt 300. To prevent the plate 110 from detaching.
그런 다음, 상기 플레이트(110)의 주입공(113)을 통해 모르타르관(400)을 삽입하여 그 하단부가 지지관체(120)의 내부에 위치토록 한 후 시멘트접합 액상 모르타르를 주입하게 되는데, 상기 시멘트접합 액상 모르타르는 지지관체(120)의 이음관(121)을 거쳐 튜브(130)로 주입되며, 상기 튜브(130)를 거친 시멘트접합 액상 모르타르는 록크볼트(300)의 단부가 깊이 설치된 천공(200)의 내측부터 서서히 채워지면서 튜브(130)와 천공(200) 사이가 채워짐과 동시에 천공(200) 내부의 공기가 밀려 나와 플레이트(110)의 공기배출공(114)으로 배출되며, 이와 동시에 상기 공기배출공(114)을 통해 시멘트접합 액상 모르타르가 배출되는 순간 시멘트접합 액상 모르타르의 주입을 차단한다.Then, the mortar tube 400 is inserted through the injection hole 113 of the plate 110 so that the lower end thereof is positioned inside the support tube 120, and then cement cement liquid mortar is injected. The bonded liquid mortar is injected into the tube 130 via the fitting pipe 121 of the support pipe body 120, and the cement bonded liquid mortar having passed through the tube 130 is deeply provided with an end portion of the lock bolt 300. ) Is gradually filled from the inner side of the tube 130 and the perforation 200 is filled and at the same time the air inside the perforation 200 is pushed out and discharged to the air discharge hole 114 of the plate 110, at the same time the air As soon as the cement bonded liquid mortar is discharged through the discharge hole 114, injection of the cement bonded liquid mortar is blocked.
그리고, 소정의 시간이 경과하면 시멘트접합 액상 모르타르가 경화하여 록크볼트(300)가 단단히 고정된다.Then, when a predetermined time elapses, the cement-bonded liquid mortar hardens and the lock bolt 300 is firmly fixed.
따라서, 본 고안은 압력부재인 플레이트(110)에 누두형상의 지지관체(120)를 용접하여 이들을 일체화시킴으로써 체결장치(100)의 제조효율을 크게 향상시킴은 물론이고, 지지관체(120)에 플레이트(110)를 정확하게 위치하고 있기 때문에 록크볼트(300)가 지지관체(120)에 삽입된 튜브(130)의 정중앙으로 위치하여 시멘트접합 액상 모르타르를 균일하게 분포, 경화함으로써 록크볼트(300)의 결합강도를 더욱 강화할 수 있도록 한 매우 유용한 효과가 있다.Therefore, the present invention significantly improves the manufacturing efficiency of the fastening device 100 by welding the nut head-shaped support tube 120 to the plate 110, which is a pressure member, and integrates them, as well as the plate on the support tube 120. Since the lock 110 is accurately positioned, the lock bolt 300 is positioned at the center of the tube 130 inserted into the support tube 120 to uniformly distribute and cure the cement-bonded liquid mortar to bond strength of the lock bolt 300. There is a very useful effect that can be further enhanced.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2004-0014896U KR200361250Y1 (en) | 2004-05-28 | 2004-05-28 | a coupler for rockbolt |
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| Application Number | Priority Date | Filing Date | Title |
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| KR20-2004-0014896U KR200361250Y1 (en) | 2004-05-28 | 2004-05-28 | a coupler for rockbolt |
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| KR200361250Y1 true KR200361250Y1 (en) | 2004-09-07 |
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| KR20160011927A (en) * | 2014-07-23 | 2016-02-02 | 주식회사 가포드 | Bulbed cable bolt |
| WO2023019307A1 (en) * | 2021-08-18 | 2023-02-23 | Willcox Tim | Rock bolt and method of installing same |
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| US4188158A (en) * | 1978-05-15 | 1980-02-12 | Waiamea Company, Inc. | Mine roof bolt hole seal |
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