EP0622139A2 - Système d'entraînement pour un obtinateur du tron de coulée d'un conteneur métallingique - Google Patents

Système d'entraînement pour un obtinateur du tron de coulée d'un conteneur métallingique Download PDF

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Publication number
EP0622139A2
EP0622139A2 EP94102681A EP94102681A EP0622139A2 EP 0622139 A2 EP0622139 A2 EP 0622139A2 EP 94102681 A EP94102681 A EP 94102681A EP 94102681 A EP94102681 A EP 94102681A EP 0622139 A2 EP0622139 A2 EP 0622139A2
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
valve
drive device
cylinder unit
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.)
Withdrawn
Application number
EP94102681A
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German (de)
English (en)
Other versions
EP0622139A3 (fr
Inventor
Urs Basler
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.)
Stopinc AG
Original Assignee
Stopinc AG
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 Stopinc AG filed Critical Stopinc AG
Publication of EP0622139A2 publication Critical patent/EP0622139A2/fr
Publication of EP0622139A3 publication Critical patent/EP0622139A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment

Definitions

  • the invention relates to a drive device for a closure member on the spout of a metal-containing container, with a piston / cylinder unit attached to the latter, the closure member being controllable via a linkage, and with a valve block which has a control valve and a short-circuit valve serving for manual actuation of the closure member .
  • a stopper as a closing member is controlled by means of an actuating cylinder.
  • the stopper is either controlled via a servo valve connected to it or moved manually by interposing a short-circuit valve.
  • This servo valve and the short-circuit valve can be firmly connected as a structural unit to the actuating cylinder designed as a differential cylinder.
  • this differential cylinder has a short construction, this plays a subordinate role in the circumstances, for example in distributors with plugs as a closing member, since the space available for this Arrangement of the cylinder are not problematic.
  • a disadvantage of such a differential cylinder is that the cross-sectional areas of the two cylinder chambers separated by the piston are different in size, making the control of the actuating cylinder more complicated on the one hand and, on the other hand, when the pressure medium lines are short-circuited, excess pressure medium arises from one chamber to the other, which a return of the medium from the larger chamber to the pressure medium collecting container is necessary.
  • the servo valve and the short-circuit valve can be firmly connected as a structural unit to the actuating cylinder. However, this causes an undesirable increase in the weight of the actuating cylinder, which often has to be removed from the container containing the molten metal during operation.
  • the present invention is based on the object of further developing the generic drive device in such a way that it achieves optimum control and optimal behavior in the event of short-circuiting for manual actuation of the closure member and, in addition, its piston / cylinder unit is as light as possible should.
  • the piston / cylinder unit is designed as a synchronous cylinder, the cylinder of which has a cylinder part forming the working chamber for the piston sliding therein and a cylinder part connected to it and containing the valve block. Because the piston / cylinder unit is designed as a synchronous cylinder, there are significant advantages with regard to the control and in particular also when the two chambers separated from the piston are short-circuited, because when the piston is displaced, their volume increases or decreases. lose weight.
  • the piston rod forming the valve block and the piston rod arranged therein preferably have a stroke displacement sensor, while the piston rod opposite the piston is coupled to the linkage for moving the closure member.
  • the two cylinder parts are advantageously made of aluminum.
  • the overall design of the piston / cylinder unit is very light, and the unit that is often removed from the container in steelworks practice does not exceed the maximum weight that can still be lifted by hand.
  • Fig. 1 shows the structure of a conventional discharge control of molten metal 15 from a container 10, which is preferably designed as a so-called distribution vessel.
  • the molten metal 15 flows from the spout 14 of this distribution vessel into a continuous casting mold, not shown, in which a constant bath level must be maintained during operation.
  • This is accomplished with the stopper 20 arranged in the container 10 as the closure member which can be regulated as the outflow quantity of the melt.
  • This stopper 20 is actuated by a drive device 30 which is removably fastened to the container 10 and has a linkage 16 which can be moved up and down automatically either by hand via a lever 12 or else via a piston / cylinder unit 40.
  • a lifting rod 32 connected to the linkage 16 is guided in a height-adjustable manner in bearings 34 contained in the housing 36, this lifting rod 32 being at the lower end in a steering connection with the lever 12 provided for manual operation and also with a connecting element 35 engaging on it the piston rod 42 of the piston / cylinder unit 40 is coupled.
  • the latter is other end releasably attached to the housing 36 of the drive device 30 via a coupling element 44, not explained in detail.
  • the piston / cylinder unit 40 is shown in FIG. 2. It consists essentially of a two-part cylinder, a piston 45 guided therein with a piston rod 42, 42 ', a valve block 50 and a sensor 60.
  • the two-part cylinder consists of an actual cylinder part 46, in which the piston 45 and the piston rod 42 are guided longitudinally, and of a cylinder part 48 which extends this and into which the piston rod 42 'extends.
  • This cylinder part 48 likewise forms the valve block and, in addition, the measuring transducer 60 is contained in it coaxially with the aforementioned piston rod 42 '.
  • the piston / cylinder unit 40 is designed according to the invention as a synchronous cylinder and its piston 45 therefore has a piston rod 42 or the same diameter on both sides. 42 ', each of which is sealingly guided in a guide bush 46' provided in the cylinder part 46 and thus the chambers formed on both sides of the piston undergo an equally large volume change when it is displaced longitudinally. Together they form a working chamber 49 and the piston 45 is guided longitudinally with almost no play.
  • both the cylinder part 46 and the cylinder part 48 detachably connected to it are made of aluminum and the former is hardened on its inner surface in contact with the piston 45 in a known manner so that the cylinder is not prematurely worn out.
  • the working chamber 49 is divided into two chambers by the piston itself, each of these chambers being assigned a line 51, 52 at the end, which are integrated in the cylinder and extend into the cylinder part 48, from where they then lead to the valves are.
  • a stroke displacement sensor 60 which is also integrated in the cylinder part 48, has a measuring piston 61 which projects into the piston rod 42 'with a bore and which, in a manner known per se, determines the respective position of the piston rod 42' and thus of the piston 45 in the cylinder via an electronic signal evaluation.
  • the cross-section of the cylinder part 48 is advantageously square or rectangular. The valves can be attached tightly to the resulting flat surfaces and without special training of their contact surfaces.
  • the outputs 51 ', 52' of the lines 51, 52 connected to the chamber 49 are connected to a control valve 55 which is in a indicated protective hood is housed and by means of which the actual control of the piston 45 takes place.
  • the control valve 55 is connected to a displacement encoder 56, which indicates its piston position at all times.
  • outlets 57, 58 are provided from the lines 51, 52 perpendicular to the image plane, which are also integrated in the cylinder part 48 and lead to pressure relief valves, by means of which the pressures in the chambers can be limited.
  • additional line outlets 66, 67 connected to the lines 51, 52 are provided, which are guided via the control valve 55 into a pressure generating unit (not shown) or into a collecting tank.
  • the cylinder part 48 is made of aluminum or a similar light material and that the lines mentioned and thus the valve block are integrated in them holistically results in the considerable advantage over the known solutions that this piston / cylinder unit 40 is very light overall and also very compact and therefore very small in size.
  • the cylinder part 48 is also still part of the synchronous cylinder and several functions are thus solved in one.
  • the functioning of the valves in cooperation with the piston / cylinder unit 40 is illustrated in the hydraulic diagram according to FIG.
  • the control valve 55 is a 4/3-way valve with a built-in measuring sensor 56, by means of which a position feedback 56 ′ of the respective position of the control valve 55 and thus an internal position control loop of this valve is achieved.
  • a position feedback 56 ′ of the respective position of the control valve 55 and thus an internal position control loop of this valve is achieved.
  • it is connected on the one hand to a pressure container and on the other hand to a collecting container with a check valve 64 connected therebetween. With the latter it is achieved that in the short-circuit position 55.1 of the control valve 55 shown, the medium cannot flow back into the collecting container, only if a pressure set at this, for example 1 bar, is exceeded can the medium flow back.
  • This control valve 55 communicates with the chamber 49 of the synchronous cylinder via two separate lines 51, 52.
  • pressure peaks originating from the stopper 20 designed as an actuator are compensated, ie if this stopper has to be closed quickly in a specific case, then to protect it with the valves 63, when an adjustable maximum pressure occurs, the two lines 51, 52 short-circuited and the force acting on the stopper is instantly reduced.
  • the piston 45 moves to the right or to the left, however, in position 55.3 in between, it remains in the rest position. Its current position is detected by the already mentioned measuring sensor 60, which delivers a feedback signal 60 'to the controller. This is explained in more detail below.
  • FIG. 4 shows an alternative exemplary embodiment with a control valve 70, in which only the features which differ from those according to FIG. 3 are discussed below.
  • This is a 4/3-way valve with three positions 70.1, 70.2 and 70.3, in which the short-circuit position is not included.
  • a separate shut-off valve 77 is provided with which the lines 51, 52 can be short-circuited manually and / or in a controlled manner for the manual actuation of the piston 45.
  • a control signal is supplied to the control valve 55 via an amplifier 59.
  • the stroke position sensor 60 reports the respective piston position of the unit 40 in a feedback signal 60 'to the actual controller 80, which then responds in a corresponding manner.
  • a bath level of the molten metal in a mold can be achieved with an accuracy of a few millimeters.
  • a stopper has been shown as a closure member. However, it can also be a closure member, as shown and described in various variants, for example in DE-A1 37 31 600. This drive device could of course also be applied to other similar actuators.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
EP94102681A 1993-04-13 1994-02-23 Système d'entraînement pour un obtinateur du tron de coulée d'un conteneur métallingique. Withdrawn EP0622139A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1104/93 1993-04-13
CH01104/93A CH687959A5 (de) 1993-04-13 1993-04-13 Antriebseinrichtung fuer ein Verschlussorgan am Ausguss eines Metallschmelze enthaltenden Behaelters

Publications (2)

Publication Number Publication Date
EP0622139A2 true EP0622139A2 (fr) 1994-11-02
EP0622139A3 EP0622139A3 (fr) 1996-10-16

Family

ID=4202576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102681A Withdrawn EP0622139A3 (fr) 1993-04-13 1994-02-23 Système d'entraînement pour un obtinateur du tron de coulée d'un conteneur métallingique.

Country Status (7)

Country Link
US (1) US5421559A (fr)
EP (1) EP0622139A3 (fr)
JP (1) JP3002910U (fr)
CN (1) CN1096575A (fr)
CA (1) CA2121008A1 (fr)
CH (1) CH687959A5 (fr)
TW (1) TW266171B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20042301A1 (it) * 2004-11-30 2005-02-28 Danieli Off Mecc Dispositivo di comando di un'asta-tampone
KR100807669B1 (ko) * 2006-12-26 2008-02-28 주식회사 포스코 쌍롤식 박판 주조기의 턴디쉬 스토퍼 조절 장치
CN101456072B (zh) * 2007-12-11 2010-08-25 贵阳铝镁设计研究院 控制抬包抽吸口开闭的装置
US8210402B2 (en) * 2009-02-09 2012-07-03 Ajf, Inc. Slag control shape device with L-shape loading bracket
ITMI20121914A1 (it) * 2012-11-09 2014-05-10 Danieli Off Mecc Dispositivo di comando per asta tampone
DE102013218345B4 (de) * 2013-09-12 2021-02-04 Sms Group Gmbh Vorrichtung zum Verschließen einer Abflussöffnung in einem metallurgischen Gefäß
CN103486092B (zh) * 2013-09-14 2016-04-20 中国重型机械研究院股份公司 一种塞棒液压控制系统
CN104162654B (zh) * 2014-06-30 2019-04-02 富士和机械工业（湖北）有限公司 一种浇注机自动浇注系统
CN104550897A (zh) * 2014-12-15 2015-04-29 余姚市庆达机械有限公司 一种塞杆机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832110A (en) * 1951-11-01 1958-04-29 Blaw Knox Co Ladle stopper control apparatus
FR1442566A (fr) * 1965-05-13 1966-06-17 Senssenbrenner Gmbh C Dispositif de commande hydraulique pour la quenouille de poches de coulée
FR2184520A1 (en) * 1972-05-19 1973-12-28 Siderurgie Fse Inst Rech Casting nozzle stopper rod - with reduced wear from repeated movement
DE2603003A1 (de) * 1975-01-28 1976-07-29 Metacon Ag Schieberverschluss fuer fluessigmetallbehaelter
DE3041788A1 (de) * 1979-11-07 1981-06-04 Metacon AG, Zürich Antriebsvorrichtung fuer den schieberverschluss eines metallurgischen gefaesses
DE3135048A1 (de) * 1981-09-04 1983-03-31 SMS Schloemann-Siemag AG, 4000 Düsseldorf Giessspiegelregelung fuer den fuellstand der schmelze in stranggiesskokillen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2085260B1 (fr) * 1970-04-02 1973-07-13 Pont A Mousson
DE3731600A1 (de) * 1987-09-19 1989-04-06 Didier Werke Ag Drehschiebeverschluss fuer ein metallurigsches gefaess sowie rotor und/oder stator fuer einen solchen drehverschluss
US5312090A (en) * 1992-12-14 1994-05-17 Cmi International Apparatus and method for controlling a stopper rod of a bottom pouring vessel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832110A (en) * 1951-11-01 1958-04-29 Blaw Knox Co Ladle stopper control apparatus
FR1442566A (fr) * 1965-05-13 1966-06-17 Senssenbrenner Gmbh C Dispositif de commande hydraulique pour la quenouille de poches de coulée
FR2184520A1 (en) * 1972-05-19 1973-12-28 Siderurgie Fse Inst Rech Casting nozzle stopper rod - with reduced wear from repeated movement
DE2603003A1 (de) * 1975-01-28 1976-07-29 Metacon Ag Schieberverschluss fuer fluessigmetallbehaelter
DE3041788A1 (de) * 1979-11-07 1981-06-04 Metacon AG, Zürich Antriebsvorrichtung fuer den schieberverschluss eines metallurgischen gefaesses
DE3135048A1 (de) * 1981-09-04 1983-03-31 SMS Schloemann-Siemag AG, 4000 Düsseldorf Giessspiegelregelung fuer den fuellstand der schmelze in stranggiesskokillen

Also Published As

Publication number Publication date
TW266171B (fr) 1995-12-21
US5421559A (en) 1995-06-06
CN1096575A (zh) 1994-12-21
EP0622139A3 (fr) 1996-10-16
CH687959A5 (de) 1997-04-15
CA2121008A1 (fr) 1994-10-14
JP3002910U (ja) 1994-10-11

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