EP2233592A2 - Stichlochbohrmaschine - Google Patents

Stichlochbohrmaschine Download PDF

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Publication number
EP2233592A2
EP2233592A2 EP10150985A EP10150985A EP2233592A2 EP 2233592 A2 EP2233592 A2 EP 2233592A2 EP 10150985 A EP10150985 A EP 10150985A EP 10150985 A EP10150985 A EP 10150985A EP 2233592 A2 EP2233592 A2 EP 2233592A2
Authority
EP
European Patent Office
Prior art keywords
pivot
drill
link
taphole
arm
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP10150985A
Other languages
English (en)
French (fr)
Other versions
EP2233592A3 (de
EP2233592B1 (de
Inventor
Ian Mcdonald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Ltd
Original Assignee
Siemens VAI Metals Technologies Ltd
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 Siemens VAI Metals Technologies Ltd filed Critical Siemens VAI Metals Technologies Ltd
Publication of EP2233592A2 publication Critical patent/EP2233592A2/de
Publication of EP2233592A3 publication Critical patent/EP2233592A3/de
Application granted granted Critical
Publication of EP2233592B1 publication Critical patent/EP2233592B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • 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
    • 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
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools

Definitions

  • This invention relates to a taphole drill for opening a blast furnace taphole.
  • a taphole is provided which is sealed and un-sealed as the furnace is operated to release molten metal from the furnace.
  • the hole is sealed with clay which hardens with the heat of the furnace and this has to be drilled using a large pneumatic or hydraulically powered rotary percussion drill when sufficient metal has gathered at the furnace bottom.
  • blast furnaces are large items of equipment (a typical blast furnace might produce tens of thousands of tonnes of metal per week).
  • the furnace is housed in a correspondingly large building or complex of buildings.
  • the floor space about a furnace is often constrained as it will include troughs and runners for receiving the molten metal when the furnace is tapped.
  • a taphole drill is itself a very large item of equipment which requires a substantial support structure which also allows movement of the drill by a foundry worker from a "parked" position to a drilling position where the drill bit is centred on the taphole.
  • There are two current arrangements for mounting a taphole drill In a first arrangement, a slewing jib arm is provided having a parallel linkage connected to a control arm. The jib slews (rotates) about a primary pivot.
  • a second arrangement does not have a control arm but a single linkage to a drill guide. Both arrangements occupy a large area of the foundry workshop floor and hamper access to the taphole.
  • the present invention arose from a desire to provide a taphole drill which permits good access to the taphole when the drill is placed in a stowed (parked) position.
  • a taphole drill comprising a primary pivot to which a jib arm is mounted at a first end which jib arm divided into a first and a second part at a pivot point, a drill guide fixed to an end of the second part; a control arm link connect to the second part of the jib arm at a position intermediate the pivot point and the end to which the drill guide is fixed wherein the other end of the control arm is connected to a dual position pivot point which is moveable from a first pivot position when the drill is in a parked position to a second pivot position different to the first when the drill is in the drilling position.
  • This arrangement is compact and allows good access to the taphole when the drill is in the parked position.
  • the first pivot position is located at a first distance from the primary pivot and the second pivot position is located at a second distance greater than the first distance from the primary pivot.
  • control arm is pivotably connected to a link by a control arm pivot which link being connected to the primary pivot by a second pivot such that as the jib arm is rotated about the first pivot the link pivots about the second pivot to move the control arm pivot from the first pivot position to the second pivot position.
  • the primary pivot has a stop to limit the motion of the link and thus to set the second position.
  • the link comprises a rear and a front wherein the front abuts a second stop to define the first pivot position and rear abuts the first stop to define the second position.
  • a taphole drill 1 in accordance with the invention comprises a drill motor 2, a drill guide 3 and a drill bit shaft 4 fixed to the end of a jib arm 5.
  • the jib arm 5 has a jib arm pivot 6 at an intermediate position.
  • the arm may therefore be considered to be formed of a first limb 5a and a second limb 5b.
  • the limb 5b extends a primary pivot 7 to which it is mounted to allow rotational movement thereabout.
  • the taphole drill 1 is able to be rotated or slewed about the primary pivot 7.
  • the taphole drill 1 also includes a control arm 8 which is attached to the first limb 5a at a position intermediate the jib arm pivot 6 and the other end to which the drill motor 2 is mounted.
  • the control arm 8 is fixed by means of a pivot 9.
  • the other end of the control arm 8 is attached to a link 10 by means of a link first pivot 11.
  • the link 10 is attached to the primary pivot 7 by means of a link second pivot 12. This is more clearly shown in figure 2 .
  • the primary pivot 7 includes a radial extension 13 welded to its surface which includes a hole through which a pivot pin for the pivot 12 is located.
  • the link 10 moves from a parked drill position shown in broken outline to the drilling position shown in solid outline. Both positions are defined by the link abutting respective shim stops 13a and 14 carried on the pivot surface. It will be seen that a radial distance A of the pivot 11 to the axis of the pivot 7 in the stowed or parked position is shorter than the radial distance B when the pivot 11 is in the drilling position.
  • the link has the indicated trajectory 15 as movement about the pivot 7 occurs leading to the pivoting of the link 10 about the pivot 12.
  • the link 10 is shown in greater detail in figure 3 . It can be seen that it comprises an upper and lower plates 15 and 16 which have a generally triangular shape when viewed in plan. Each plate is provided with holes that are aligned with corresponding holes in the other which accept the pivot pins. The plates are held in spaced-apart alignment by a central body 17.
  • Figure 4 shows in a schematic way the taphole drill slew trajectory as movement occurs between the drill parked position of figure 4a , to an intermediate position of figure 4b and then to the drilling position of figure 4c . It will be seen that as the drill is slewed about the primary pivot 7 the distance between the primary pivot 7 to pivot 11 is increased causing an extension in the radial distance C1 to C2 between the pivot 7 and the drill guide 4. Movement in the opposite direction results in the arrangement folding in on itself to provide a more compact footprint than is possible with other prior art arrangements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Earth Drilling (AREA)
  • Surgical Instruments (AREA)
EP10150985.9A 2009-03-27 2010-01-18 Stichlochbohrmaschine Active EP2233592B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0905254A GB2468910B (en) 2009-03-27 2009-03-27 A taphole drill

Publications (3)

Publication Number Publication Date
EP2233592A2 true EP2233592A2 (de) 2010-09-29
EP2233592A3 EP2233592A3 (de) 2011-02-16
EP2233592B1 EP2233592B1 (de) 2018-05-30

Family

ID=40671798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10150985.9A Active EP2233592B1 (de) 2009-03-27 2010-01-18 Stichlochbohrmaschine

Country Status (2)

Country Link
EP (1) EP2233592B1 (de)
GB (1) GB2468910B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112432506A (zh) * 2020-11-25 2021-03-02 商都中建金马冶金化工有限公司 一种用于矿热炉的开堵眼机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201373A (en) 1978-06-01 1980-05-06 Paul Wurth-S.A. Guiding and positioning mechanism for a plugging or drilling device
US6086816A (en) 1997-05-08 2000-07-11 Pohang Iron & Steel Co., Ltd. Tap hole drilling machine for blast furnace, drill bit for use in tap hole drilling machine, and tap hole drilling method
US6251338B1 (en) 1997-07-09 2001-06-26 Paul Wurth, S.A. Pivoting device with arm and control rod

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1174536A (en) * 1967-09-11 1969-12-17 Dango & Dienenthal Kg Apparatus for Opening and Closing Tap Holes of Shaft Furnaces
LU78209A1 (de) * 1977-09-30 1978-01-23
DE3044087A1 (de) * 1980-11-24 1982-06-16 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Stichlochbohrmaschine
DE19630078C2 (de) * 1996-07-26 2003-03-27 Dango & Dienenthal Maschbau Hubvorrichtung für Stichloch-Bohrmaschinen
LU90093B1 (de) * 1997-07-16 1999-01-18 Wurth Paul Sa Schwenkvorrichtung mit Ausleger
KR100856278B1 (ko) * 2001-12-13 2008-09-03 주식회사 포스코 용광로 출선구 관리가 용이한 굴삭장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201373A (en) 1978-06-01 1980-05-06 Paul Wurth-S.A. Guiding and positioning mechanism for a plugging or drilling device
US6086816A (en) 1997-05-08 2000-07-11 Pohang Iron & Steel Co., Ltd. Tap hole drilling machine for blast furnace, drill bit for use in tap hole drilling machine, and tap hole drilling method
US6251338B1 (en) 1997-07-09 2001-06-26 Paul Wurth, S.A. Pivoting device with arm and control rod

Also Published As

Publication number Publication date
EP2233592A3 (de) 2011-02-16
EP2233592B1 (de) 2018-05-30
GB0905254D0 (en) 2009-05-13
GB2468910B (en) 2011-05-11
GB2468910A (en) 2010-09-29

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