KR20020050968A - protrusion part excavate removal apparatus - Google Patents

protrusion part excavate removal apparatus Download PDF

Info

Publication number
KR20020050968A
KR20020050968A KR1020000080281A KR20000080281A KR20020050968A KR 20020050968 A KR20020050968 A KR 20020050968A KR 1020000080281 A KR1020000080281 A KR 1020000080281A KR 20000080281 A KR20000080281 A KR 20000080281A KR 20020050968 A KR20020050968 A KR 20020050968A
Authority
KR
South Korea
Prior art keywords
protrusion
excavation
hole
protrusion part
excavating
Prior art date
Application number
KR1020000080281A
Other languages
Korean (ko)
Inventor
안광석
남복용
Original Assignee
이구택
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이구택, 주식회사 포스코 filed Critical 이구택
Priority to KR1020000080281A priority Critical patent/KR20020050968A/en
Publication of KR20020050968A publication Critical patent/KR20020050968A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1518—Tapholes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)

Abstract

PURPOSE: An apparatus for removing the protrusion part by excavating a protrusion part of the tap hole is provided to easily remove the protrusion part by excavating the protrusion part inside a junction surface of a tap hole to which it is difficult for a worker to approach due to high heat the same as the junction surface thereof. CONSTITUTION: In excavating thus removing a protrusion part inside a junction surface of a tap hole, the apparatus for removing the protrusion part by excavating the protrusion part of the tap hole is characterized in that a body part(12) to which a blocking plate(10) is adhered is connected to the outer part of the apparatus, a compression part(18) on which a discharge hole(19) is formed is connected to the end part of one side of the apparatus, a piston(14) and a cylinder onto which a spring(15) is mounted, a fixed ring(13), a rotation ring(16) and a ball bearing(17) are adhered onto a main body part(22) inside the apparatus, an excavation blade(27-1), a blower hole(9) and an excavation part(27) on which a discharge hole(20) is formed are connected to the end part of one side of the apparatus, and a tap hole opener is mounted on an iron rod(8) which is connected to the main body part(22), and on which a groove is formed so that the inner part of the apparatus is rotationally advanced with the outer part of the apparatus being fixed using power.

Description

돌출부 굴삭 제거 장치{protrusion part excavate removal apparatus}Protrusion part excavate removal apparatus

본 발명은 용광로의 출선구 접합면 내부의 돌출부를 굴삭하여 제거하는 장치에 관한 것으로, 특히 고열에 의하여 작업자의 접근이 어려운 출선구 접합면 내부의 돌출부를 접합면과 같게 굴착하여 제거가 용이하도록 한 돌출부 굴삭 제거장치에 관한 것이다.The present invention relates to an apparatus for excavating and removing protrusions inside the junction of the exit of the blast furnace, and particularly, to facilitate removal by excavating the projection of the junction of the exit of the exit, which is difficult for workers to access due to high heat, as the joint. It relates to a protrusion excavation removal device.

도 1 은 종래의 출선구 측단면도와 개공 작업도로써, 이를 참조하여 설명하면 다음과 같다.1 is a side view and a opening diagram of a conventional exit port, which will be described with reference to the following.

일반적으로 용광로의 출선구(1)는 둥근원 형태에 외부에는 지름이 크고 둥근 결합면(2)이 단단하게 형성되고 내부는 접착성이 좋은 흙으로 채워진다.In general, the exit port 1 of the furnace has a round circle shape and a large diameter and a round coupling surface 2 is formed firmly on the outside, and the inside is filled with good adhesion.

통상 용광로의 용융물을 외부로 배출하는 작업은 출선구(1)의 접합면(2) 내부를 개공기(5)를 이용하여 굴착봉(5)으로 내부까지 관통하여 둥근구멍(4-1)을 형성시킨 다음 용융물을 대탕도(6)에 안착시킨다.In general, the work of discharging the melt of the blast furnace to the outside penetrates the inside of the joining surface 2 of the exit port 1 with the excavation rod 5 to the inside by using the opening machine 5 to open the round hole 4-1. After the formation, the melt is placed on the bath 6.

용융물의 배출이 완료된 출선구(1)의 구멍(4-1)을 막기 위하여 접착성이 좋은 흙이 다량 충진된 밀봉기기를 접합면(2)에 압착시킨 다음 밀폐 흙을 구멍(4-1)으로 밀어넣어 밀봉시킨다.In order to block the hole 4-1 of the exit port 1 in which the melt is discharged, a sealing device filled with a large amount of good adhesive soil is pressed onto the joint surface 2, and then the sealed soil is inserted into the hole 4-1. To seal.

그러나, 상기와 같은 출선구(1)에 개공과 밀봉이 장기간 반복되는 과정에서 출선구(1)의 구멍(4-1)과 접합면(2)의 사이에는 대탕도(6)의 고열에 의한 기기 내부에서 흙이 굳은 다음 접합면(2)의 내부에 접착되어 돌출부(3)을 형성한다.However, due to the high temperature of the large hot waterway 6 between the hole 4-1 of the tap opening 1 and the joining surface 2 in the process of opening and sealing the tap opening 1 for a long time as described above. Soil is hardened inside the device and then bonded to the inside of the joining surface (2) to form a protrusion (3).

상기 돌출부(3)는 강도가 약하여 굴착봉(4)으로 개공 작업시 충격으로 접합면(2)과 함께 탈락하는데, 이러한 돌출부(3)의 탈락은 용융물의 배출이 대탕도(6)의 정면으로 되지않고 측면으로 유로가 형성되어 용융물이 대탕도(6) 외부 유실로 인한 측면부위의 각종 설비의 손상 및 작업자의 화상 등의 안전사고의 위험이 높다.The protrusions 3 are weak in strength and drop off together with the joining surface 2 due to the impact during the opening of the excavation rods 4, and the dropping of the protrusions 3 causes the discharge of the melt to face the front of the large bath 6. However, the flow path is formed on the side, and the melt is highly risky for safety accidents such as damage to various equipments and burns of the workers due to the external loss of the large bath (6).

또한, 용융물의 배출 완료후 출선구(1)의 구멍(4-1)을 밀봉하는 경우 접합면(2)과 기기와의 사이에 공간이 생겨 밀봉 흙이 용융물과 함께 외부로 유출되어 안전 사고 및 설비 사고의 위험이 있어 돌출부(3)를 제거하여야 한다.In addition, in the case of sealing the hole 4-1 of the outlet 1 after completion of discharging the melt, a space is formed between the joining surface 2 and the device, and the sealing soil flows to the outside together with the melt. The protrusion (3) must be removed as there is a risk of an equipment accident.

그러나, 돌출부(3)의 제거작업시 작업자가 망치와 철봉에 의한 출선구(1)의 정면에서 타격하여 제거하는 경우 대탕도(6)의 상부 비산열과 출선구(1)측에서 발생하는 고열과 화염으로 인한 화상의 위험이 있고, 작업조건의 불량으로 인한 육체적 작업부담이 증가하며, 돌출부(3)의 제거가 어렵고 접합면(2)을 손상시키는 문제점이 있다.However, when the worker removes the projecting part 3 by hitting it from the front of the tapping opening 1 by a hammer and an iron rod, the upper scattering heat of the large hot water supply 6 and the high heat generated at the taping opening 1 side and There is a risk of burns due to flames, physical workload due to poor working conditions, difficulty in removing the protrusions 3 and damage to the joint surface 2.

따라서, 본 발명은 상기 종래의 문제점을 해결하고자 창안된 것으로서, 접합면의 손상없이 돌출부를 굴삭하여 제거하도록 하는데 그 목적이 있다.Therefore, the present invention was devised to solve the above-mentioned problems, and an object thereof is to excavate and remove the protrusion without damaging the joint surface.

도 1 은 종래의 출선구 측단면도와 개공 작업도.1 is a side cross-sectional view and opening work drawing of a conventional exit port.

도 2 는 본 발명 돌출부 굴삭 제거 장치의 측단면도.Figure 2 is a side cross-sectional view of the protrusion excavation removal device of the present invention.

도 3 은 본 발명 동체부와 압착부의 분해 사시도.Figure 3 is an exploded perspective view of the present invention body portion and the crimping portion.

도 4a 및 도 4b 는 본 발명 몸통부와 굴삭부의 분해 사시도.Figure 4a and 4b is an exploded perspective view of the body portion and the excavator portion of the present invention.

도 5 는 본 발명 돌출부 굴삭 제거 장치의 설치 사용도.5 is an installation use of the present invention protrusion excavation removal device.

도 6 은 본 발명 돌출부 굴삭 제거 장치의 작업 완료도.Figure 6 is a work complete view of the present invention protrusion excavation removal device.

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

1 : 출선구 2 : 접합면 3 : 돌출부 4 : 굴착봉DESCRIPTION OF SYMBOLS 1 Outlet port 2 Bonding surface 3 Protruding part 4 Excavation bar

5 : 개공기 6 : 대탕도 7 : 체결홈 8 : 철봉5: Opening machine 6: Large bath 7: Fastening groove 8: Iron bar

9 : 블로어 구멍 10 : 동체 차단판 11 : 차단판 체결구9 blower hole 10 fuselage block plate 11 block plate fastener

12 : 동체부 13 : 고정링 14 : 피스톤 15 : 스프링12 Body part 13 Fixing ring 14 Piston 15 Spring

16 : 회전링 17 : 볼 베어링 18 : 압착부 19 : 방출구DESCRIPTION OF SYMBOLS 16 ROTATING RING 17 BALL BEARING 18 CRIMPING PART 19 DISCLOSURE

20 : 배출구 21 : 샤프트 스크류 22 : 몸통부 23 : 렌지 볼트20 Outlet 21 Shaft Screw 22 Body 23 Torque Bolt

24 : 차단판 체결볼트 25 : 철봉 스크류 26 : 고정링 체결구24: Block plate fastening bolt 25: Iron bar screw 26: Fixing ring fastener

27 : 굴삭부27: excavator

이하, 첨부도면을 참조하여 본 발명에 따른 바람직한 실시예에 대하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명 돌출부 굴삭 제거 장치의 실시예는,Embodiment of the present invention protrusion excavation device,

출선구(1) 접합면 내부의 돌출부(3)를 굴삭 제거하는데 있어서,In excavating and removing the protrusion part 3 inside the tap-hole 1 joining surface,

외부에는 차단판(10)이 부착된 동체부(12)가 체결되고 일측단부에는 방출구(19)가 가공된 압착부(18)가 체결되며, 내부에는 몸통부(22)에 스프링(15)을 장착한 피스톤(14) 및 실린더(14-1)와 고정링(13), 회전링(16) 및 볼 베어링(17)이 부착되고 일측단부에는 굴삭날(27-1) 및 블로어 구멍(9)과 배출구(20)가 가공된 굴삭부(27)가 체결되며, 상기 몸통부(22)에 체결되고 홈이 형성된 철봉(8)에 개공기(5)를 장착하여 동력으로 외부를 고정하고 내부를 회전하며 전진함이 바람직하다.The outer body 12 with the blocking plate 10 is fastened to the outside, and one side end is fastened to the crimping unit 18, the discharge port 19 is processed, the spring 15 to the body 22 inside The piston 14 and the cylinder 14-1, the fixed ring 13, the rotary ring 16 and the ball bearing 17 are mounted, and at one end thereof, the excavation blade 27-1 and the blower hole 9 ) And the excavation part 27 in which the discharge port 20 is processed are fastened, and the opening machine 5 is mounted on the iron rod 8 fastened to the body part 22 and the groove is formed to fix the outside with power and the inside. It is preferable to rotate and advance.

도 2 는 본 발명 돌출부 굴삭 제거 장치의 측단면도이고, 도 3 은 본 발명 동체부와 압착부의 분해 사시도이며, 도 4a 및 도 4b 는 본 발명 몸통부와 굴삭부의 분해 사시도이고, 도 5 는 본 발명 돌출부 굴삭 제거 장치의 설치 사용도이며, 도 6 은 본 발명 돌출부 굴삭 제거 장치의 작업 완료도로써, 이를 참조하여 설명하면 다음과 같다.Figure 2 is a side cross-sectional view of the present invention protrusion excavation removal apparatus, Figure 3 is an exploded perspective view of the body and the compression portion of the present invention, Figures 4a and 4b is an exploded perspective view of the body portion and the excavation portion of the present invention, Figure 5 is the present invention FIG. 6 is a view illustrating the installation and use of the protrusion excavation removing apparatus. Referring to FIG.

접합면 내부의 돌출부 굴삭 제거 장치는 중앙이 넓은 원통형의 둥근 동체부와 압착부가 연결된 내부에 몸통부 및 굴삭부가 조립된다.Protrusion excavation removal device inside the mating surface is the body portion and the excavation portion is assembled in the center connected to the large round cylindrical body and the compression portion.

돌출부 굴삭 제거 장치의 압착부(18)는 단면이 두꺼운 원통형에 한 일측단부는 압착부(18) 중앙보다 통이 좁은 원형으로 외부에 스크류(22)가 가공되고 한 방향의 단면은 수직으로 된다.The crimping part 18 of the protrusion excavation removal apparatus has a cylindrical section with a thick cross section, and one end is a circular cylinder narrower than the center of the crimping part 18, and the screw 22 is machined on the outside, and the cross section in one direction is vertical.

또한, 원통의 양방향 중앙에는 내부에서 외부로 배출구(19)가 수직으로 가공되고, 동체부(12)는 단면이 두꺼운 원통형으로 한 일측단부의 수직 단면에는 볼트(24)의 체결이 가능한 통이 적은 둥근홈의 체결구(11)가 가동되며, 다른 한 일측단부는 동체부(12)보다 통이 좁고 단면이 넓은 원통이 내부에 삽입된 형태로 형성되며, 내부의 수평 단면에는 스크류(12-1)가 가공되고, 내부 수직의 단면에는 둥근 반원의 구멍이 둥글게 가동된다.In addition, the discharge port 19 is vertically processed from the inside to the outside in the bidirectional center of the cylinder, the body portion 12 is a cylindrical having a thick cross-section in one of the vertical end of the one end portion of the cylinder that can be fastened bolts 24 The fastener 11 of the round groove is movable, and the other one end is formed in a shape in which a cylinder is narrower than the body portion 12 and a wide cross section is inserted therein, and the screw 12-1 is disposed in a horizontal cross section of the inside. ) Is processed, and a round semicircular hole is rounded at the inner vertical cross section.

또한, 압착부(18)는 스크류(18-1)에 의해 동체부(12)의 내부 스크류(12-1)에 삽입되어 체결되고, 몸통부(23)는 중앙에 홈이 가공된 통이 두꺼운 봉으로 한 일측단부의 단면 중앙에 큰 스크류(23-1)의 구멍이 가공되며, 한 일측단부에는 체결구(26)가 가공되고, 단면에는 반대측의 구멍보다 작은 스크류(23-2)의 구멍이 가공되어 몸통부보다 작고 중앙에 홈이 가공된 철봉(8)에 가공된 스크류(25)에 의해 체결되며, 철봉의 한 일측단면에는 측부에서 중심까지 사각의 홈(7)이 가공된다.In addition, the crimping portion 18 is inserted into and fastened to the internal screw 12-1 of the body portion 12 by the screw 18-1, and the body portion 23 has a thick tube having a groove formed at the center thereof. A hole of a large screw 23-1 is machined in the center of the cross section of one end of the rod, and a fastener 26 is machined at one end of the rod, and a hole of the screw 23-2 smaller than the hole of the opposite side in the cross section. This processing is fastened by a screw 25 machined to the iron bar 8 is smaller than the body portion and the groove is processed in the center, the square groove 7 is machined from one side to the center of one side of the iron bar.

상기 몸통부의 중앙에 홈이 가공되고 한 측단면(큰 스크류측)의 안측 단면에는 볼 베어링(17)이 삽입되어 동체부(12)의 한 일측단부의 반원이 가공된 홈에 삽입되고, 반대측은 한면이 반원의 홈이 가공된 회전링(16)에 삽입된다.A groove is machined in the center of the body portion, and a ball bearing 17 is inserted into the inner end surface of one side surface (large screw side) so that a semicircle of one side end of the body portion 12 is inserted into the machined groove, and the opposite side is One side is inserted into the rotating ring 16 in which the groove of the semicircle is machined.

상기 회전링(16)에는 내부에 스프링(14)이 삽입된 실린더(14-1)가 볼트로 체결되고, 실린더(14-1)의 한 일측단면에는 피스톤(14)이 내부에 삽입된 후 고정링(13)에 볼트에 의해 체결된다.The rotating ring 16 is fastened to the cylinder 14-1 having a spring 14 inserted therein by bolts, and fixed to one side surface of the cylinder 14-1 after the piston 14 is inserted therein. It is fastened to the ring 13 by bolts.

또한, 상기 고정링(13)의 측면에는 4개의 구멍이 가공되어 렌지볼트(23)에 의해 몸통부(22)에 고정된다.In addition, four holes are processed in the side surface of the fixing ring 13 and fixed to the trunk portion 22 by the range bolt 23.

그리고, 굴삭부(27)는 중앙에 블로어 구멍(9)이 가공된 통이 굵은 봉의 한 일측단부는 여러개의 굴삭날(27-1)중 중앙의 날은 블로어 구멍(9)이 가공되고, 외부의 날은 배출구(20)가 가공된 굴삭날(27-1)이 부착되며, 한 일측단부에는 굴삭부(27)보다 통이 작은 철봉(27-2)이 부착되고, 한 일측단부에는 스크류(21)가 가공되어 몸통부(22)의 큰 스크류(23-1)에 삽입되어 체결된다.And the excavation part 27 is a blower hole 9 is processed at the center of one of the plurality of excavating blades 27-1 at one side end of the thick rod where the blower hole 9 is processed at the center. The blade is equipped with an excavation blade (27-1), the discharge port 20 is processed, one side end is attached to the iron bar (27-2) smaller than the excavation portion 27, and one side end is a screw ( 21 is processed and inserted into the large screw 23-1 of the trunk portion 22 to be fastened.

그리고, 개공기(5)에 철봉(8)을 체결하고 홈(7)에 핀으로 고정한 후 개공기(5)를 이동시켜 출선구(1)의 전방에 정지시키는데, 이때 압착부(18)는 출선구(1)의 접합면에 접착되고, 개공기(5)의 전진 기계를 작동하면 몸통부(22)의 전진으로 굴삭부(27)는 돌출부(3)에 압력을 받은 상태로 고정되며, 압착부(18)는 몸통부(22)의 스프링(15) 수축에 의해 접합면(2)에 압착된다.Then, the iron rod 8 is fastened to the opening machine 5 and fixed to the groove 7 with a pin, and then the opening machine 5 is moved to stop in front of the outlet opening 1. When the adhering surface of the tap hole 1 is bonded, and the operating machine of the opening machine 5 is operated, the excavation part 27 is fixed in the state of being pressed by the protrusion part 3 by the forward of the trunk part 22, The crimping portion 18 is crimped to the joint surface 2 by contraction of the spring 15 of the trunk portion 22.

상기 굴삭부(27)는 돌출부(3)에 고정되고, 압착부(18)는 접합면(2)에 고정된 상태에서 기계를 작동하여 전진과 회전을 하며, 블로어 구멍(9)으로 압축공기를 주입하면 돌출부(3)는 굴삭되어 배출구(20)에서 방출구(19)를 통하여 외부로 이송된다.The excavation part 27 is fixed to the protrusion part 3, and the crimping part 18 moves forward and rotates by operating the machine in a fixed state to the joint surface 2, and the compressed air is blown by the blower hole 9 When injected, the protrusions 3 are excavated and transported from the outlet 20 through the outlet 19 to the outside.

또한, 동체부(12)의 고정링(13)과 회전링(16)의 사이에 설치된 피스톤(14)과 스프링(15) 및 실린더(14-1)의 힘이 회전하며, 볼 베어링(17)을 통하여 동체부(12)에 힘을 가하면 압착부(18)는 접합면(2)에 움직임 없이 고정된다.In addition, the force of the piston 14 and the spring 15 and the cylinder 14-1 installed between the fixed ring 13 and the rotary ring 16 of the body portion 12 rotates, the ball bearing 17 When the force is applied to the body portion 12 through the crimping portion 18 is fixed to the joint surface (2) without movement.

상기와 같이 굴삭작업이 완료되면 피스톤(14)이 전진하여 실린더(14-1) 내부 회전링(16) 부위에 접촉되어 몸통부(22)와 굴삭부(27)가 전진되지 않고 돌출부(3)는 접합면(2)과 같이 평평하게 되어 작업이 완료된다.When the excavation work is completed as described above, the piston 14 moves forward to contact the inner ring 14 of the cylinder 14-1, so that the trunk portion 22 and the excavation portion 27 do not move forward, and the protrusion portion 3 does not move forward. Is flattened like the joint surface 2, and the operation is completed.

이상에서 설명한 바와 같이 본 발명에 의하면, 작업자가 출선구에 근접하지않고 기계장치에 의한 작업으로 돌출부를 정밀하게 굴삭 제거가 가능하고, 작업자의 수작업을 배제하므로 고열로부터 보호하여 화상재해를 방지하는 효과가 있다.As described above, according to the present invention, the operator can excavate and remove the protrusions precisely by working with the mechanical device without being close to the exit port, and excludes the manual work of the worker, thereby protecting from high heat and preventing burn injury. There is.

Claims (1)

출선구(1) 접합면 내부의 돌출부(3)를 굴삭 제거하는데 있어서,In excavating and removing the protrusion part 3 inside the tap-hole 1 joining surface, 외부에는 차단판(10)이 부착된 동체부(12)가 체결되고 일측단부에는 방출구(19)가 가공된 압착부(18)가 체결되며, 내부에는 몸통부(22)에 스프링(15)을 장착한 피스톤(14) 및 실린더(14-1)와 고정링(13), 회전링(16) 및 볼 베어링(17)이 부착되고 일측단부에는 굴삭날(27-1) 및 블로어 구멍(9)과 배출구(20)가 가공된 굴삭부(27)가 체결되며, 상기 몸통부(22)에 체결되고 홈이 형성된 철봉(8)에 개공기(5)를 장착하여 동력으로 외부를 고정하고 내부를 회전하며 전진하는 것을 특징으로 하는 돌출부 굴삭 제거 장치.The outer body 12 with the blocking plate 10 is fastened to the outside, and one side end is fastened to the crimping unit 18, the discharge port 19 is processed, the spring 15 to the body 22 inside The piston 14 and the cylinder 14-1, the fixed ring 13, the rotary ring 16 and the ball bearing 17 are mounted, and at one end thereof, the excavation blade 27-1 and the blower hole 9 ) And the excavation part 27 in which the discharge port 20 is processed are fastened, and the opening machine 5 is mounted on the iron rod 8 fastened to the body part 22 and the groove is formed to fix the outside with power and the inside. Protrusion excavation removal device, characterized in that to move forward.
KR1020000080281A 2000-12-22 2000-12-22 protrusion part excavate removal apparatus KR20020050968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000080281A KR20020050968A (en) 2000-12-22 2000-12-22 protrusion part excavate removal apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020000080281A KR20020050968A (en) 2000-12-22 2000-12-22 protrusion part excavate removal apparatus

Publications (1)

Publication Number Publication Date
KR20020050968A true KR20020050968A (en) 2002-06-28

Family

ID=27684625

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000080281A KR20020050968A (en) 2000-12-22 2000-12-22 protrusion part excavate removal apparatus

Country Status (1)

Country Link
KR (1) KR20020050968A (en)

Similar Documents

Publication Publication Date Title
KR20140079377A (en) Mechanical System Comprising A Device For Connection Between A Wearing Part And The Support Therof, Heavy-Construction Machine Bucket, And Method For Implementing Said System
KR20060048188A (en) Removing work device for mounting on cantilever
KR20020050968A (en) protrusion part excavate removal apparatus
KR101013397B1 (en) Rivet cutting tool and rivet disassembly apparatus
CA3051970A1 (en) Injection tool and a method for injection
KR100419771B1 (en) A supplementary device for closing the tap hole of the blast furnace
KR100429155B1 (en) Apparatus for sticking refractory onto the surface of the tap hole of the blast furnace
KR101542086B1 (en) Safe lock
CN110130841A (en) With the safe by-pass collar of brill
KR20020048161A (en) Making apparatus of protective wall for tapping hole
KR101203643B1 (en) Removing apparatus for pin
KR101271813B1 (en) Tap hole excavation apparatus
CN205349227U (en) Nozzle rotary mechanism of little efflux of high pressure prevention and cure coal and gas outburst device
KR100711770B1 (en) Apparatus for sticking refractory onto the surface of the tap hole of the blast furnace
KR950005285Y1 (en) Tapping hole of blast face
KR970002049Y1 (en) Repairing device of tapping hole with blast furnace
CN217537111U (en) High-wear-resistance dozer blade
KR101008108B1 (en) An apparatus for forming the center of tapping hole of blast furnace
KR101161995B1 (en) Surface of tap hole making apparatus
KR100423515B1 (en) Digging and shutting apparatus of blast furnace main iron through
CN216205726U (en) Static force blasting device for directional crack expansion
KR950007179Y1 (en) Opening bit of blast f&#39;ce tap hole
KR101115629B1 (en) construction method of scatter prevention cover
JP2004308774A (en) Uninterrupted-water branch joint and branching method of copper pipe
KR101896529B1 (en) Apparatus for changing mud gun nozzle tip

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination