EP1597188B1 - Klemmvorrichtung für eine einrichtung zur handhabung von elektrolyseelementen bei der produktion von aluminium - Google Patents

Klemmvorrichtung für eine einrichtung zur handhabung von elektrolyseelementen bei der produktion von aluminium Download PDF

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Publication number
EP1597188B1
EP1597188B1 EP04714818A EP04714818A EP1597188B1 EP 1597188 B1 EP1597188 B1 EP 1597188B1 EP 04714818 A EP04714818 A EP 04714818A EP 04714818 A EP04714818 A EP 04714818A EP 1597188 B1 EP1597188 B1 EP 1597188B1
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EP
European Patent Office
Prior art keywords
clamp
locking
lock
stem
gripping
Prior art date
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Expired - Lifetime
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EP04714818A
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English (en)
French (fr)
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EP1597188A2 (de
Inventor
Patrick Delescluse
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Fives ECL SAS
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ECL SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/10—External supporting frames or structures

Definitions

  • the invention relates to aluminum production plants by igneous electrolysis according to the Hall-Héroult process. It relates more particularly handling equipment used in said factories.
  • Aluminum metal is produced industrially by igneous electrolysis, namely by electrolysis of alumina in solution in a bath of molten cryolite, called electrolyte bath, according to the well-known Hall-Héroult process.
  • the electrolyte bath is contained in tanks, called “electrolysis cells”, comprising a steel box, which is coated internally with refractory and / or insulating materials, and a cathode assembly located at the bottom of the tank.
  • Anodes typically of carbonaceous material, are partially immersed in the electrolyte bath.
  • the assembly formed by an electrolytic cell, its anodes and the electrolyte bath is called an electrolysis cell.
  • the plants contain a large number of electrolysis cells arranged in line, in buildings called halls or electrolysis rooms, and connected electrically in series using connecting conductors, so as to optimize the ground occupation of the cells. factories.
  • the cells are generally arranged to form two or more parallel lines that are electrically bonded together by end conductors. The electrolysis current thus cascades from one cell to the next.
  • an electrolysis plant requires interventions on the electrolysis cells including among others the replacement of spent anodes by new anodes, the removal of liquid metal from the cells and the removal or addition of electrolyte.
  • the most modern factories are equipped with a lifting and handling unit with a traveling crane, which can be moved over and along the electrolysis cells, and a truck equipped with several handling devices. and intervention (often called "tools"), such as shovels and hoists.
  • the handling member which is intended for handling and moving loads such as anodes comprises a gripper capable of grasping the load, called “handling tongs". For example, during anode handling operations, this clamp is placed near the stem of the anode to be seized, and then closed on the rod sufficiently to lift the anode. The anode is then moved, then positioned or deposited at the desired location.
  • a handling gripper according to the preamble of independent claim 1 is known from FR-A-1363432 for handling fuel assemblies of nuclear reactors.
  • the subject of the invention is a handling gripper intended for the aluminum production industry by igneous electrolysis, capable of gripping a load by a gripping member (hereinafter called a "rod") fixed to said load, and having locking means adapted to prohibit the opening of the clamp when the load is suspended by it.
  • a gripping member hereinafter called a "rod”
  • the handling gripper according to the invention which is intended to grip a load provided with a rod, comprises the features of claim 1.
  • the Applicant had the idea to provide the clamp with a locking system which is locked or unlocked by the only movement of the rod in the clamp.
  • the locking system blocks the gripping member (s) in the closed position, thereby preventing the opening of the clamp and the release of the rod.
  • the locking is controlled by the presence and position of the rod in the clamp, which prevents untimely falls of the load in the event of failure of the actuating means of the movable or gripping members of the clamp.
  • the subject of the invention is also the use of the handling tongs according to the invention in an igneous electrolysis aluminum production plant, in particular for the handling of anodes made of carbonaceous material or the like.
  • the invention further relates to a lifting and handling unit comprising at least one load handling member (typically anodes) provided with a handling tongs according to the invention.
  • load handling member typically anodes
  • the figure 1 illustrates a typical electrolysis room, seen in section, intended for the production of aluminum.
  • the figure 2 illustrates, in profile, a handling tongs according to the invention.
  • the figure 3 illustrates, in profile, the movable elements of a handling gripper according to the invention.
  • the figure 4 illustrates a handling tongs according to the invention, seen in longitudinal section along two perpendicular planes (planes AA and BB).
  • the figure 5 illustrates the operation of the locking system of the handling gripper according to the invention with the aid of a particular example.
  • Electrolysis plants for aluminum production include a liquid aluminum production zone that includes one or more electrolysis rooms (1).
  • each electrolysis room (1) comprises electrolysis cells (2) and at least one lifting and handling unit, or "service machine", (6, 7, 8, 9, 10).
  • the electrolysis cells (2) are normally arranged in rows or rows (typically side-by-side or head-to-head), each row or line typically having one or more hundreds of cells.
  • the cells (2) comprise a series of anodes (3) provided with a metal rod (4) for fixing and electrically connecting the anodes to a metal anode frame (not shown).
  • the anode rod (4) is typically of substantially rectangular or square section.
  • the lifting and handling unit (6, 7, 8, 9, 10) is used to perform operations on the cells such as anode change or filling of ground bath feed hoppers and ALF 3 electrolysis cells. It can also be used to handle various loads, such as tank elements, pockets of liquid metal or anodes.
  • Said unit (6, 7, 8, 9, 10) typically comprises a crane (6), a carriage (7) adapted to move on the crane (6), and handling and intervention members (often referred to as "tools") (8, 9, 10), such as an operator's cabin (8), a shovel or crust (not illustrated), a breaker (not shown) or a handling member (9) provided with a gripper or handling gripper (10).
  • tools often referred to as "tools”
  • the latter is particularly intended for handling anodes (3), although it can also be used for handling other loads.
  • the crane (6) rests and circulates on raceways (11, 12) arranged parallel to each other and to the main - and typically longitudinal - axis of the hall (and the queue of cells). The crane (6) can thus be moved along the electrolysis room (1).
  • the or the gripping members release sufficient space to allow the insertion of the rod into the clamp.
  • the or each gripping member (100a, 100b) is advantageously pivotable about an axis (105).
  • the clamp (10) typically comprises two gripping members (100a, 100b), which are advantageously pivotable about an axis (105) specific to each gripping member or common to both gripping members.
  • the clamp (10) is then typically symmetrical about an axis C, called "central axis", which may coincide with the axis of the rod (4).
  • the axis or axes (105) are preferably substantially perpendicular to the axis C, so as to be substantially horizontal in use.
  • the connecting means (101a, 101b) of the clamp (10) typically comprise a projection on the or each gripping member (100a, 100b) and the corresponding connecting means (5, 5a, 5b) of the rod ( 4) comprise at least one cavity.
  • the or projections (101a, 101b) of the or each gripping member (100a, 100b) are adapted to cooperate with the corresponding cavity or cavities (5, 5a, 5b) of the rod (4) so as to limit the displacements axial axis of the rod (4) between said low and high positions when the or each gripping member (100a, 100b) is in the closed position.
  • the dimensions of the connecting means (101a, 101b, 5, 5a, 5b) are such that, when they are engaged, the rod (4) can be further moved between the upper position, in which the locking system (120) is unlocked (as shown in Figure 5 (E) ), and the low position, in which the locking system (120) is locked (as illustrated in FIG. Figure 5 (F) ).
  • This can be achieved by arranging one or more cavities (5, 5a, 5b) with enough clearance to allow these displacements.
  • connection means (101a, 101b) of the clamp (10) and the corresponding connecting means (5, 5a, 5b) of the rod (4) are advantageously such that they substantially limit - and possibly prevent - the rotation of the rod (4) about its axis A, which ensures accurate positioning of the load attached to the rod, usually an anode.
  • the clamp further comprises a clamp body (109) and a fastening means (108).
  • the latter allows in particular to fix the clamp (10) to a handling member (9).
  • the locking system (120) of the clamp (10) is locked (or “engaged") when, at the same time, the one or more gripping members (100a, 100b) are in the closed position and the rod (4) is in the down position, which typically occurs when the load is suspended by the clamp (10), and is unlocked when the rod (4) is in the up position, which typically occurs when the clamp ( 10) exerts a push on the rod (4).
  • the clamp (10) according to the invention thus allows locking or unlocking said locking system (120) by a simple relative movement of the rod (4) relative to the clamp (and typically in the clamp).
  • the locking position of the lock (121) is typically a low position and the unlocking position is typically a high position, which is which allows locking of the locking system (120) by the effect of gravity.
  • the lock (121) is advantageously able to be moved along a central axis of symmetry C of the clamp (10).
  • the latch (121) is typically provided with at least one cavity (126a, 126b), such as a notch or a mortise, adapted to cooperate with the or each locking element (102a, 102b) so as to prevent the movement of the or each gripping member (100a, 100b) from the closed position to the open position.
  • the latch (121) has a standby position - which is typically said lock position but which may be different from it - and is located in the clamp so that the rod (4) can move from the standby position to the unlock position when it is inserted into the clamp.
  • the lock (121) may comprise a pushing member (124), such as a pin, and is adapted to be moved from the waiting position to said unlocking position by a thrust of the rod (4). ) - and more precisely the end (4 ') of the rod (4) - on said thrust member (124).
  • Said pushing member (124) is typically located near the end (127) of the latch (121) located on the side of the opening of the clamp.
  • the clamp (10) may further comprise at least one guide piece (122, 123) adapted to guide the movement of the latch (121) during its movements between its different positions.
  • the clamp (10) comprises a first guide piece (122) able to slide inside the lock (121) and a second guide piece (123) able to guide the "low" end (127) of the lock (121).
  • the first guide piece (122) is typically attached to a ball or a transverse or axial axis.
  • the second guide piece (123) also acts as a stop.
  • the locking system (120) further comprises at least one biasing means, such as an elastic member, (125) adapted to cause the lock (121) to move from the unlocking position to the locking position, and able to hold it in the latter position, when the or each gripping member (100a, 100b) is in the closed position and the rod (4) is in the down position.
  • the return means (125) which is typically a spring, is advantageously integrated in the lock (121) in order to isolate it from the environment and, possibly, to lubricate it, in order to maintain its elasticity and to avoid its deterioration.
  • the return means (125) is advantageously located in a recess inside the lock (121) and / or in a recess inside a guide piece (122) of the lock.
  • the return means (125) is located partly in a recess inside the latch (121) and partly in a recess inside a guide piece (122) of the latch.
  • the locking system (120) further comprises at least one means, called locking, adapted to maintain the or each gripping member (100a, 100b) in the open position when the lock (121 ) is in the locked or standby position, as illustrated in Figures 5 (B) , 4 (B) and 4 (C).
  • These locking means make it possible to mechanically prohibit the closing of the clamp when the rod is not placed correctly therein, in particular when the rod is not placed in the clamp so as to allow the engagement of the means of link (101a, 101b, 5, 5a, 5b) between the rod and the clamp.
  • Said locking means are advantageously formed by the latch (121) and the locking elements (102a, 102b) which are then such that said elements rest on the latch when it is in the waiting position (typically the position locking), so as to prohibit the closure of the or gripping members.
  • the clamp (10) may further comprise one or more guide pieces (103, 104) of the rod (4) to ensure a satisfactory positioning thereof between the gripping members (100a, 100b) of the clamp.
  • the depression of the rod (4) in the clamp may optionally be limited by a stop (123).
  • the gripping members (100a, 100b) and / or the guide piece (s) (103, 104) preferably define a cavity which matches the shape of the shank so as to limit or even prevent rotation thereof.
  • the grippers (100a, 100b) of the gripper can be actuated by various means.
  • the figures 3 and 4 illustrate a clamp (10) in which the actuating system (110) comprises two connecting rods (114a, 114b) and an actuator (112), which is typically a jack.
  • the actuator (112) and the connecting rods (114a, 114b) are typically connected by a common actuating pin (113) attached to the actuator rod (111) of the actuator.
  • This variant has the advantage of being simple, reliable and effective.
  • the gripper according to the invention advantageously comprises two movable gripping members (100a, 100b) and the lock (121) is preferably between these two gripping members. This configuration allows a compact construction and protects the shock lock with external elements.
  • the locking system (120) is preferably entirely mechanical, such as that illustrated in FIGS. Figures 3 to 5 , in order to avoid failure modes related to electrical or electromechanical elements.
  • the gripping members (100a, 100b) are pivotable freely about their respective (or common) axis (105) and allow, in particular, positioning of the locking element or elements (102a, 102b) in front of each cavity ( 126a, 126b) and engagement of the connecting means (101a, 101b, 5, 5a, 5b), typically by introducing the projections (101a, 101b) into the corresponding cavities (5, 5a, 5b) of the rod (4).
  • the grippers (100a, 100b) are locked when the gripper (10) is pulled up and the rod (4) descends under the effect of its own weight and that of the load ( Figure 5 (E) ).
  • the descent of the rod (4) is stopped by the connecting means (101a, 101b, 5, 5a, 5b).
  • the one or more locking elements (102a, 102b) are inserted into the corresponding cavity (s) (126a, 126b) and cooperate with the latter to prevent the opening of the latches (126a, 126b).
  • gripping members (100a, 100b) of the gripper (10) ( Figure 5 (F) ).
  • the lock is effective as long as the load is suspended.
  • the locking system is unlocked by raising the rod in the clamp, which is typically achieved by pressing the load.
  • Such a system has the advantage of not requiring additional actuators and thus increase the reliability of the device. It also has the advantage of providing a locking action regardless of the weight of the load and the friction force between the connecting means (101a, 101b, 5, 5a, 5b).
  • the latch (121) has a waiting position ( Figures 5 (A) and 5 (B) ) which merges with the locking position ( Figure 5 (F) ).
  • the locking elements (102a, 102b) cooperate with the latch (121), relying on the latter, so as to prohibit the closure of the clamp as the rod (4) is not sufficient depressed to allow alignment of the projections (101a, 101b) and cavities (5, 5a, 5b).
  • the locking elements (102a, 102b) cooperate with the latch (121) by a camming effect.
  • the invention also relates to a lifting and handling unit (6, 7, 8, 9, 10) comprising at least one load-handling member (such as anodes) (9) provided with a handling tongs (10) according to the invention.
  • a lifting and handling unit (6, 7, 8, 9, 10) comprising at least one load-handling member (such as anodes) (9) provided with a handling tongs (10) according to the invention.
  • the invention avoids dual-control systems. It also has the advantage of being virtually insensitive to acceleration during handling.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Clamps And Clips (AREA)
  • Manipulator (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Claims (23)

  1. Handhabungszange (10) zum Greifen einer Stange (4), welche an einer Last (3) befestigt und mit mindestens einem Verbindungsmittel (5, 5a, 5b) versehen ist, umfassend:
    - mindestens ein bewegliches Greiforgan (100a, 100b), typischerweise eine Backe, mit einer offenen Stellung, die eine im Gebrauch typischerweise nach unten gerichtete Öffnung bildet, in welche die Stange (4) eingeführt werden kann, und einer geschlossenen Stellung zum Festhalten der Stange (4),
    - ein Betätigungssystem (110), um das bzw. jedes Greiforgan (100a, 100b) zwischen der offenen und der geschlossenen Stellung zu bewegen,
    - mindestens ein Verbindungsmittel (101a, 101b), das geeignet ist, mit dem bzw. den entsprechenden Verbindungsmitteln (5, 5a, 5b) der Stange (4) zusammenzuwirken, um die Axialverschiebungen der Stange (4) in der Zange (10) zwischen einer sog. tiefen Stellung und einer sog. hohen Stellung zu begrenzen, wenn sich das bzw. jedes Greiforgan (100a, 100a) in der geschlossenen Stellung befindet,
    - mindestens ein Verriegelungssystem (120), das geeignet ist, das bzw. jedes Greiforgan (100a, 100b) in der geschlossenen Stellung zu blockieren, wenn es verriegelt ist, und das verriegelbar ist, wenn sich die Stange (4) in der tiefen Stellung befindet, und entriegelbar ist, wenn sich die Stange (4) in der hohen Stellung befindet,
    dadurch gekennzeichnet, dass das Verriegelungssystem (120) mindestens ein an jedem Greiforgan (100a, 100b) befestigtes Verriegelungselement (102a, 102b), wie z.B. einen Zahn oder Haken, und mindestens einen beweglichen Riegel (121) mit einer ersten, sog. Verriegelungsstellung und einer zweiten, sog. Entriegelungsstellung umfasst, wobei der Riegel (121) von der Entriegelungsstellung in die Verriegelungsstellung bewegbar ist, wenn sich das bzw. jedes Greiforgan (100a, 100b) in der geschlossenen Stellung befindet und die Stange (4) sich in der tiefen Stellung befindet, mit dem bzw. jedem Verriegelungselement (102a, 102b) zusammenwirken kann, um die Bewegung des bzw. jedes Greiforgans (100a, 100b) zu gestatten, wenn er sich in der Entriegelungsstellung befindet, und das bzw. jedes Greiforgan (100a, 100b) in der geschlossenen Stellung zu halten, wenn er sich in der Verriegelungsstellung befindet, und durch eine Axialverschiebung der Stange (4) von der tiefen Stellung in die hohe Stellung von der Verriegelungsstellung in die Entriegelungsstellung bewegbar ist.
  2. Zange (10) nach Anspruch 1, dadurch gekennzeichnet, dass das bzw. jedes Greiforgan (100a, 100b) um eine Achse (105) verschwenkbar ist.
  3. Zange (10) nach irgendeinem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sie zwei Greiforgane (100a, 100b) umfasst.
  4. Zange (10) nach Anspruch 3, dadurch gekennzeichnet, dass die beiden Greiforgane (100a, 100b) um jeweils eine eigene oder für die beiden Greiforgane gemeinsame Achse (105) verschwenkbar sind.
  5. Zange (10) nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Verbindungsmittel (101 a, 101 b) der Zange (10) mindestens einen Vorsprung an dem bzw. jedem Greiforgan (100a, 100b) aufweisen und dass die entsprechenden Verbindungsmittel (5, 5a, 5b) der Stange (4) mindestens eine Vertiefung aufweisen.
  6. Zange (10) nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Verriegelungsstellung des Riegels (121) im Gebrauch eine tiefe Stellung und die Entriegelungsstellung eine hohe Stellung ist.
  7. Zange (10) nach irgendeinem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Riegel (121) mit mindestens einer Vertiefung (126a, 126b) versehen ist, die geeignet ist, mit dem bzw. jedem Verriegelungselement (102a, 102b) zusammenzuwirken, um die Bewegung des bzw. jedes Greiforgans (100a, 100b) von der geschlossenen Stellung in die offene Stellung zu unterbinden.
  8. Zange (10) nach irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Riegel (121) eine Wartestellung besitzt und so in der Zange gelegen ist, dass die Stange (4) ihn bei ihrer Einführung in die Zange von der Wartestellung in die Entriegelungsstellung bewegen kann.
  9. Zange (10) nach Anspruch 8, dadurch gekennzeichnet, dass die Wartestellung der Verriegelungsstellung entspricht.
  10. Zange (10) nach irgendeinem der Ansprüche 8 bis 9, dadurch gekennzeichnet, dass der Riegel (121) ein Schubglied (124) umfasst, z. B. einen Zapfen, und durch eine Schubwirkung der Stange (4) auf das Schubglied (124) von der Wartestellung in die Entriegelungsstellung bewegbar ist.
  11. Zange (10) nach Anspruch 10, dadurch gekennzeichnet, dass sich das Schubglied (124) in der Nähe des auf der Öffnungsseite der Zange liegenden Endes (127) des Riegels (121) befindet.
  12. Zange (10) nach irgendeinem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie zudem mindestens ein Führungsteil (122, 123) umfasst, das geeignet ist, die Bewegung des Riegels (121) bei seinen Bewegungen zwischen den verschiedenen Stellungen zu führen.
  13. Zange (10) nach irgendeinem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Verriegelungssystem (120) zudem mindestens ein Rückstellmittel (125) umfasst, das geeignet ist, die Bewegung des Riegels (121) von der Entriegelungsstellung in die Verriegelungsstellung herbeizuführen und ihn in der letztgenannten Stellung zu halten, wenn sich das bzw. jedes Greiforgan (100a, 100b) in der geschlossenen Stellung befindet und die Stange (4) sich in der tiefen Stellung befindet.
  14. Zange (10) nach Anspruch 13, dadurch gekennzeichnet, dass das Rückstellmittel (125) ein elastisches Mittel ist, z.B. eine Feder.
  15. Zange (10) nach irgendeinem der Ansprüche 13 oder 14, dadurch gekennzeichnet, dass ein Rückstellmittel (125) in einer Ausnehmung innerhalb des Riegels (121) und/oder in einer Ausnehmung innerhalb des Führungsteils (122) liegt.
  16. Zange (10) nach irgendeinem der Ansprüche 13 bis 14, dadurch gekennzeichnet, dass ein Rückstellmittel (125) zum Teil in einer Ausnehmung innerhalb des Riegels (121) und zum Teil in einer Ausnehmung innerhalb eines Führungsteils (122) liegt.
  17. Zange (10) nach irgendeinem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass das Verriegelungssystem (120) zudem mindestens ein sog. Blockiermittel umfasst, das geeignet ist, das bzw. jedes Greiforgan (100a, 100b) in der offenen Stellung zu halten, wenn sich der Riegel (121) in der Verriegelungsstellung oder in der Wartestellung befindet.
  18. Zange (10) nach irgendeinem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass sie zwei bewegliche Greiforgane (100a, 100b) umfasst und dass der Riegel (121) zwischen diesen beiden Greiforganen liegt.
  19. Zange (10) nach irgendeinem der Ansprüche 1 bis 18, dadurch gekennzeichnet, dass das Betätigungssystem (110) aus zwei Pleueln (114a, 114b) und einem Stellglied (112) besteht und dass das Stellglied (112) und die Pleuel (114a, 114b) durch eine gemeinsame Betätigungsachse (113) verbunden sind, die an der Betätigungsstange (111) des Stellglieds befestigt ist.
  20. Zange (10) nach Anspruch 19, dadurch gekennzeichnet, dass das Stellglied (112) ein Zylinder ist.
  21. Zange (10) nach irgendeinem der Ansprüche 1 bis 20, dadurch gekennzeichnet, dass das Verriegelungssystem (120) voll mechanisch ist.
  22. Hebe- und Handhabungseinheit (6, 7, 8, 9, 10), umfassend mindestens ein Handhabungsorgan (9) für Lasten (3), welches mit einer Handhabungszange (10) nach irgendeinem der Ansprüche 1 bis 21 versehen ist.
  23. Verwendung der Handhabungszange (10) nach irgendeinem der Ansprüche 1 bis 21 in einem Werk zur Herstellung von Aluminium durch Schmelzflusselektrolyse, insbesondere für die Handhabung von Anoden aus kohlenstoffhaltigem Werkstoff oder dgl.
EP04714818A 2003-02-28 2004-02-26 Klemmvorrichtung für eine einrichtung zur handhabung von elektrolyseelementen bei der produktion von aluminium Expired - Lifetime EP1597188B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0302500A FR2851762B1 (fr) 2003-02-28 2003-02-28 Pince de manutention d'une machine de service de cellules d'electrolyse pour la production d'alumunium
FR0302500 2003-02-28
PCT/FR2004/000430 WO2004079046A2 (fr) 2003-02-28 2004-02-26 Pince de manutention d'une machine de service de cellules d'electrolyse pour la production d'aluminium

Publications (2)

Publication Number Publication Date
EP1597188A2 EP1597188A2 (de) 2005-11-23
EP1597188B1 true EP1597188B1 (de) 2008-09-10

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US (1) US7850218B2 (de)
EP (1) EP1597188B1 (de)
CN (1) CN100377985C (de)
AR (1) AR043215A1 (de)
AT (1) ATE407907T1 (de)
AU (1) AU2004217777B2 (de)
BR (1) BRPI0407884A (de)
CA (1) CA2517267C (de)
DE (1) DE602004016465D1 (de)
EA (1) EA007259B1 (de)
FR (1) FR2851762B1 (de)
IS (1) IS7989A (de)
WO (1) WO2004079046A2 (de)
ZA (1) ZA200506334B (de)

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WO2004079046A3 (fr) 2005-05-06
CN100377985C (zh) 2008-04-02
EP1597188A2 (de) 2005-11-23
CN1753829A (zh) 2006-03-29
IS7989A (is) 2005-08-18
EA200501378A1 (ru) 2006-02-24
CA2517267A1 (fr) 2004-09-16
AU2004217777A1 (en) 2004-09-16
US20060290153A1 (en) 2006-12-28
US7850218B2 (en) 2010-12-14
AU2004217777B2 (en) 2008-10-16
EA007259B1 (ru) 2006-08-25
AR043215A1 (es) 2005-07-20
FR2851762A1 (fr) 2004-09-03
ATE407907T1 (de) 2008-09-15
FR2851762B1 (fr) 2006-02-10
WO2004079046A2 (fr) 2004-09-16
CA2517267C (fr) 2011-10-11
BRPI0407884A (pt) 2006-03-01
ZA200506334B (en) 2006-10-25
DE602004016465D1 (de) 2008-10-23

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