US3751854A - Cover lifting-and swinging mechanism for a tiltable furnace - Google Patents

Cover lifting-and swinging mechanism for a tiltable furnace Download PDF

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Publication number
US3751854A
US3751854A US00222562A US3751854DA US3751854A US 3751854 A US3751854 A US 3751854A US 00222562 A US00222562 A US 00222562A US 3751854D A US3751854D A US 3751854DA US 3751854 A US3751854 A US 3751854A
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United States
Prior art keywords
furnace
cover
piston
cam groove
hydraulic cylinder
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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.)
Expired - Lifetime
Application number
US00222562A
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English (en)
Inventor
E Huwyler
H Wenzel
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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BBC Brown Boveri France SA
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Filing date
Publication date
Application filed by BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
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Publication of US3751854A publication Critical patent/US3751854A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like

Definitions

  • ABSTRACT A cover liftingand swinging mechanism for a tiltable crucible smelting or oven-type furnace wherein the cover is first caused to lift and then swing to an open position for completely emptying the furnace pot after the fumace charge has been drawn OK in the usual manner through a pouring spout.
  • the combined lifting and swinging motions imparted to the cover are effected and controlled by means of a hydraulic cylinder secured at the side of the tiltable furnace structure.
  • the piston component of the cylinder is connected to a cylindrical housing having a swing arm that is secured to the cover and the housing is provided with a cam groove associated with a stationary guide-roll so as to exercise positive control over the cover and piston movement.
  • the present invention relates to an improved cover lifting-and swinging mechanism for a crucible smelting or oven-type furnace, whereby the cover is operated through a swinging arm by means of a hydraulic cylinder which is fastened to the furnace.
  • the cover is retained against opening by a movable arrangement at the upper end of the hydraulic cylinder comprising a cylindrical housing which is fixedly connected on one side to the swinging arm and detachably connected on the other side to the piston of the hydraulic cylinder,
  • the outside of said housing being provided with a cam groove which is engaged by a roll that is fastened at the furnace or at a platform connected to the furnace, whereby the upper portion of the cam groove, which actuates the lifting of the cover, inclines slightly relative to the housing axis, gradually merging into a cam portion which inclines steeply relative to the housing axis, the latter cam portion serving to generate the swinging motion of the cover.
  • FIG. 1 shows a crucible smelting furnace in side view, also depicting by means of dot and dash lines the furnace in tilting position (angle of tilt approx.
  • FIG. 2 provides a top view of the tilted furnace
  • FIG. 3 shows a diagram of the housing, with the cam groove illustrated at an enlarged scale.
  • a tiltable crucible smelting furnace 11 is provided with a platform 2, and the melting pot is closed off against the outside by means of a heat-blocking cover 5.
  • This cover 5 is fastened to a supporting arm 6, the arm being welded to a cylindrical housing 7 which is arranged movably at the upper end of a hydraulic cylinder 8 and which is detachably connected with the piston of the hydraulic cylinder.
  • a cam groove 9 At the outer surface of the housing 7 there is provided a cam groove 9, engaged by a roll 10 which is arranged at the furnace platform 2.
  • This roll is balanced by a block 11, provided at the platform 2 which supports the cover 5.
  • the furnace is also equipped with a pouring lip 12 and a hydraulic cylinder 15 which generates the tilting motion of the furnace.
  • Numeral 16 denotes a pan which is suspended from a line 17.
  • the cover liftingand swinging mechanism operates in the following manner:
  • the furnace l is tilted by the hydraulic cylinder 15 in known manner, and the molten metal then flows in accordance with the angle of tilt from the furnace 1 over the pouring lip 12 into the pan to which is suspended from the line 17.
  • the latter is connected in known manner with a, not illustrated, traveling crane which moves along a track across the furnace. Normally, the furnace cover 5 will be closed during this tilting operation.
  • the angle of tilt must be at least close to 100 from the vertical, as depicted in FIG. 1, and it will then be necessary to prevent the cover 5 to open by itself in this specific tilting position through gravitational force as will happen in case of the above discussed conventional cover liftingand swing'ng devices.
  • This is accomplished by the mechanism proposed in accordance with the invention characterized in that due to the small angle of inclination throughout the upper portion of the cam groove 9 a rise in the center of gravity M, of the cover is forcibly accomplished, and the wedging effect, so generated, will thus prevent a forward sliding of cylinder 7 or cover respectively in the direction of arrow P (see FIG. 1).
  • the above described mechanism has the substantial advantage that the furnace cover will be kept closed in a positive manner when the furnace is in its discharge position and will never unseat itself during this position.
  • the housing with this specific cam groove, locking the furnace cover in its closed position can also be used in connection with presently existing furnaces; it is only necessary to provide the hydraulic cylinder which is already present and causes the lifting and swinging of the cover with such a housing 7, and to connect the housing with the arm supporting the cover and with the piston of the hydraulic cylinder.
  • cam groove and the roll can be interchanged as to their position without altering the essence of the invention.
  • hydraulic cylinder which operates the furnace cover can be replaced by a pneumatic lifting device.
  • a combined cover lifting and swinging mechanism for a tiltable crucible smelting or oven type furnace comprising a hydraulic cylinder secured to the tiltable furnace structure, said hydraulic cylinder being located at the side of and parallel with the furnace structure so that the piston thereof extends vertically upward when said furnace structure occupies a vertical position, a movable cylindrical housing connected to the piston of said hydraulic cylinder and with its longitudinal axis parallel to said piston, a swingable arm rigidly connected at the opposite ends thereof to the furnace cover and cylindrical housing respectively, the outer side of said cylindrical housing being provided with a cam groove engaged by a roll secured to the tiltable furnace structure, said cam groove including an upper portion having a slight inclination to the longitudinal axis of said cylindrical housing which serves to impart a lifting movement to said arm and cover from the mouth of the furnace when the piston of said hydraulic cylinder is initially actuated, said upper portion of said cam groove merging with a lower portion having a steep inclination relative to the longitudinal axis of said cylindrical housing and which serves to thereafter impart a swinging movement to

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US00222562A 1971-02-05 1972-10-01 Cover lifting-and swinging mechanism for a tiltable furnace Expired - Lifetime US3751854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH169871A CH527660A (de) 1971-02-05 1971-02-05 Deckelhebe- und Schwenkvorrichtung für kippbare Tiegelschmelz- oder Warmhalteofen

Publications (1)

Publication Number Publication Date
US3751854A true US3751854A (en) 1973-08-14

Family

ID=4216503

Family Applications (1)

Application Number Title Priority Date Filing Date
US00222562A Expired - Lifetime US3751854A (en) 1971-02-05 1972-10-01 Cover lifting-and swinging mechanism for a tiltable furnace

Country Status (5)

Country Link
US (1) US3751854A (de)
CH (1) CH527660A (de)
DE (1) DE2112407C3 (de)
IT (1) IT947226B (de)
SE (1) SE364358B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658404A (en) * 1985-08-27 1987-04-14 Leybold-Heraeus Gmbh Induction furnace with a furnace bottom and a lid
US5011168A (en) * 1989-10-20 1991-04-30 Deamicis Ferdinando Portable garbage container
US5139619A (en) * 1991-03-11 1992-08-18 Atlantic Richfield Company Cover lifting device
US5267259A (en) * 1991-07-30 1993-11-30 Abb Patent Gmbh Induction crucible furnace with sonically uncoupled accessible furnace platform
WO2000077119A1 (en) * 1999-06-11 2000-12-21 Foster Wheeler Corporation Automated coke drum top heading device
CN100587335C (zh) * 2003-02-26 2010-02-03 铂金自控有限公司 炉子及其操作和控制方法
CN103394649A (zh) * 2013-08-21 2013-11-20 无锡蠡湖叶轮制造有限公司 浇冒口自动倾倒装备
US20140015174A1 (en) * 2011-03-29 2014-01-16 Aisin Takaoka Co., Ltd. Cast-steel pouring apparatus
CN104709840A (zh) * 2015-03-25 2015-06-17 中冶建筑研究总院有限公司 一种回转盖安全自锁定装置
CN111266561A (zh) * 2019-10-12 2020-06-12 湖南从义电炉设备有限公司 设置在铸铁浇注用保温浇包上的自动开盖装置
CN111266562A (zh) * 2019-10-12 2020-06-12 湖南从义电炉设备有限公司 保温浇包自动转盖及倾倒装置
CN114939650A (zh) * 2022-05-06 2022-08-26 上海金范机械铸造有限公司 一种铸造浇包

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006019481B4 (de) * 2006-04-26 2012-04-05 Fridolin Ohnemus Abdeckvorrichtung sowie Verfahren zum Montieren und Demontieren der Abdeckvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529319A (en) * 1946-05-18 1950-11-07 Thys Edouard Arc furnace tilting and adjusting mechanism
US3684261A (en) * 1970-10-26 1972-08-15 Lectromelt Corp Electric furnace superstructure swing interlock

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529319A (en) * 1946-05-18 1950-11-07 Thys Edouard Arc furnace tilting and adjusting mechanism
US3684261A (en) * 1970-10-26 1972-08-15 Lectromelt Corp Electric furnace superstructure swing interlock

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658404A (en) * 1985-08-27 1987-04-14 Leybold-Heraeus Gmbh Induction furnace with a furnace bottom and a lid
US5011168A (en) * 1989-10-20 1991-04-30 Deamicis Ferdinando Portable garbage container
US5139619A (en) * 1991-03-11 1992-08-18 Atlantic Richfield Company Cover lifting device
US5267259A (en) * 1991-07-30 1993-11-30 Abb Patent Gmbh Induction crucible furnace with sonically uncoupled accessible furnace platform
WO2000077119A1 (en) * 1999-06-11 2000-12-21 Foster Wheeler Corporation Automated coke drum top heading device
CN100587335C (zh) * 2003-02-26 2010-02-03 铂金自控有限公司 炉子及其操作和控制方法
US9095897B2 (en) * 2011-03-29 2015-08-04 Aisin Takaoka Co., Ltd. Cast-steel pouring apparatus
US20140015174A1 (en) * 2011-03-29 2014-01-16 Aisin Takaoka Co., Ltd. Cast-steel pouring apparatus
CN103394649A (zh) * 2013-08-21 2013-11-20 无锡蠡湖叶轮制造有限公司 浇冒口自动倾倒装备
CN104709840A (zh) * 2015-03-25 2015-06-17 中冶建筑研究总院有限公司 一种回转盖安全自锁定装置
CN104709840B (zh) * 2015-03-25 2017-01-04 中冶建筑研究总院有限公司 一种回转盖安全自锁定装置
CN111266561A (zh) * 2019-10-12 2020-06-12 湖南从义电炉设备有限公司 设置在铸铁浇注用保温浇包上的自动开盖装置
CN111266562A (zh) * 2019-10-12 2020-06-12 湖南从义电炉设备有限公司 保温浇包自动转盖及倾倒装置
CN111266562B (zh) * 2019-10-12 2021-08-17 湖南从义电炉设备有限公司 保温浇包自动转盖及倾倒装置
CN114939650A (zh) * 2022-05-06 2022-08-26 上海金范机械铸造有限公司 一种铸造浇包
CN114939650B (zh) * 2022-05-06 2023-08-29 上海金范机械铸造有限公司 一种铸造浇包

Also Published As

Publication number Publication date
DE2112407C3 (de) 1980-01-17
IT947226B (it) 1973-05-21
SE364358B (de) 1974-02-18
DE2112407A1 (de) 1972-08-24
CH527660A (de) 1972-09-15
DE2112407B2 (de) 1979-05-17

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