NO20170883A1 - Device for gripping an anode for lifting operations and method for operating same - Google Patents

Device for gripping an anode for lifting operations and method for operating same Download PDF

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Publication number
NO20170883A1
NO20170883A1 NO20170883A NO20170883A NO20170883A1 NO 20170883 A1 NO20170883 A1 NO 20170883A1 NO 20170883 A NO20170883 A NO 20170883A NO 20170883 A NO20170883 A NO 20170883A NO 20170883 A1 NO20170883 A1 NO 20170883A1
Authority
NO
Norway
Prior art keywords
gripping device
anode rod
locking elements
gap
bolt
Prior art date
Application number
NO20170883A
Other languages
Norwegian (no)
Other versions
NO343337B1 (en
Inventor
Per Johnny Teigen
Original Assignee
Norsk Hydro As
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 Norsk Hydro As filed Critical Norsk Hydro As
Priority to NO20170883A priority Critical patent/NO343337B1/en
Priority to PCT/EP2018/059241 priority patent/WO2018219538A1/en
Publication of NO20170883A1 publication Critical patent/NO20170883A1/en
Publication of NO343337B1 publication Critical patent/NO343337B1/en

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Classifications

    • 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
    • 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
    • C25C3/12—Anodes
    • 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
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof
    • C25C7/025—Electrodes; Connections thereof used in cells for the electrolysis of melts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/08—Gripping heads and other end effectors having finger members
    • 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
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The invention relates to a gripping device (21) for mating an anode rod (1) having a recess (9) between two legs (2, 3) at its top end, and further having a bolt (6) securely fixed in the legs. The invention also relates to a method for operating the gripping device. The gripping device (21) has an overall frame structure (15, 15') provided with two locking elements (7, 8) pivotably arranged in supports (9, 10). The locking elements (7, 8) are allowed to rotate from a fixed position to provide a gap between them as the lifting device (21) and the top end of the anode rod (1) are mated. The locking elements (7, 8) are rotated back to the fixed position after the bolt (6) has passed the gap thereby locking the lifting device (21) to the anode rod. The anode rod (1) can be released from the gripping device (21) by moving at least one support (9, 10) apart from the other, and thereby forming a gap between the locking elements (7, 8) allowing the bolt (6) to pass in a reverse direction through said gap.The invention relates to a gripping device (21) for feeding an anode rod (1) having a recess (9) between two legs (2, 3) at its top end, and further having a bolt (6) securely fixed in the legs . The invention also relates to a method for operating the gripping device. The gripping device (21) has an overall frame structure (15, 15') provided with two locking elements (7, 8) pivotably arranged in supports (9, 10). The locking elements (7, 8) are allowed to rotate from a fixed position to provide a gap between them as the lifting device (21) and the top end of the anode rod (1) are mated. The locking elements (7, 8) are rotated back to the fixed position after the bolt (6) has passed the gap thereby locking the lifting device (21) to the anode rod. The anode rod (1) can be released from the gripping device (21) by moving at least one support (9, 10) apart from the other, and thereby forming a gap between the locking elements (7, 8) allowing the bolt ( 6) to pass in a reverse direction through said gap.

Description

Device for gripping an anode for lifting operations and method for operating same
The present invention relates to a device for gripping a prebaked anode for an electr cell for production of aluminium of the Hall-Héroult type and a method for operating gripping device. Such gripping devices are used for lifting and transporting preba anodes and butts (worn out anodes) in various operations in a smelter plant.
In particular, the invention relates to a so-called “lifting bell” and a method f connecting/releasing same at the top end of an anode rod, and one intended use handling anode butts (used anodes) in a rodding shop where the butts can be trans between various stations hanging in a conveyor.
Conventionally prebaked anodes comprise an anode rod that consist of a rod or a ste aluminium attached at its upper end to the anode beam in the superstructure of the c a clamping device, its other end is connected to an anode yoke, often via a bimetallic where the yoke is made out of steel. The yoke comprises one or more studs or stubs th are integrated with bores in the top part of an anode carbon block. The connectio secured by means of cast iron poured into an annular space between the stud and the The anode rods are commonly of a rectangular / square cross-section and provided wit transversal through going bore close to its top end that forms a “lifting eye”.
Gripping devices for handling anodes as mentioned above are commonly attached lifting arrangement such as one manipulator arm arranged in a crane or Pot Tend Machine (PTM). Gripping devices complementary to this type of anode rod interface can provided with two bolts that are entered from opposite sides of the bore. The bolts can moved along their axis into the bore, each by an actuator. One example of this kind of de can be found in US 4,032,020 A.
US 7,850,218 B2 discloses one device for the same type of interface, where the grippin device consist of two hinged jaws each having one pin, where the jaws are moved towa each other to enter the pins in the bore formed in the top end of the anode rod.
According to the present invention, it is achieved to a new lifting device that is easy to e onto the top end of the anode rod, as it has guiding elements, it is self-locking after b lowered onto the end of the anode rod, and it is steady in use. It locks automatically, bringing two levers apart from each other is needed to release the lifting device from anode rod.
The gripping action can easily be carried out by an operator in a PTM due to its self-loc system. The releasing action can either be done manually, by an integrated actuator some external system being able to move certain parts that will release the lock.
These and further improvements and advantages can be achieved with the pre invention as defined in the accompanying claims.
The invention shall be further described by examples and figures where;
Fig. 1 discloses in perspective a top part of an anode rod, with a bolt,
Fig. 2 illustrates a gripping device with locking elements, seen in perspective,
Fig. 3 illustrates a gripping device in perspective where a top of an anode rod has been introduced and push on two locking elements with a bolt,
Fig. 4 illustrates a gripping device in perspective where the bolt has passed a gap between the two locking elements,
Fig. 5 illustrates a gripping device in perspective where a top of an anode rod has been introduced and where the bolt is fixed by locking elements.
The new gripping device 21 (Fig. 2) is intended to work on a design of the top end of anode rod 1 as shown in Fig. 1. Here the top end of the anode rod is provided with a ce arranged top-down recess 9. At each side of the recess 9 there are two legs 2, 3 havin each a transversally oriented bore 4, 5, where the bores are made in-line allowing a b to be securely fixed in the legs 2, 3. The part of the bolt accessible in the area of the rec will represent the lifting point for this anode rod. This design necessitates an amen gripping device as former mentioned gripping devices will not be compatible with modifications.
In Fig. 2 some main components of a gripping device are shown, with locking elements 8, guiding skirts 16,16', releasing handlebars, and a lifting eye 100.
Fig. 5 shows a gripping device 21 attached to an anode rod 1 that is provided with a re 9 at its the top end. To enable the illustration of the function of the gripping device, so parts are cut out of in the Figure. Here only one leg 2 is shown as the other leg is remo for illustrative purposes. The Figure further shows a bolt 6 attached to the leg 2.
The gripping device 21 as shown has conical guiding skirts 16, 16’ that facilitates th entering of the gripping device at the top of the anode rod.
Main parts for enabling the gripping and locking action of the device are two lock elements 7,8 pivotably arranged by respective axles (not shown) arranged in correspon supports 9,10. The locking elements 7, 8 are allowed to rotate upwards as the lifting devic is entered onto the top end of the anode 1, see Fig. 3 and 4. Consequently, the bol allowed to pass through a gap formed between the locking elements 7, 8 as they are pushed into a rotational movement upwards by the bolt 6. In Fig. 3 there is shown a between the locking elements 7, 8 as the anode rod with the bolt 6 enters the grip device. In Fig. 4 the bolt has been moved so far into the gripping device that the lock elements are allowed to rotate downwards and close the gap between them.
As shown in Fig. 4, the locking elements 7, 8 can be secured or fixed in a horizontal positi by abutting against supporting parts 7’, 8’ of the supports 9, 10, and thereby locking t lifting device to the anode rod.
As shown in Fig.5, the supports 9,10 including the two locking elements 7, 8 are supporte in the overall frame structure 15, 15’ of the gripping device 21 in a manner that allow th supports to be moved outwardly. This sliding support can be of a linear bearing type kn to the skilled man (not shown).
Handles 13, 14 are connected with the respective supports 9, 10 and can be operated release the locking function of the locking elements in case the gripping device shall separated from the anode rod.
The function of this is that by moving the supports 9 ,10 outwardly, the locking elements 7 8 are separated by an outwardly movement forming a gap between them, thus allowing bolt 6 to pass through the gap in a reverse action. This is not shown in the Figures but be understood by the skilled person.
The gripping device 21 is a semi-automatic construction, which will clip on to the anode r when lowered on to the rod or when the rod is raised in to the gripping device. Once lo in the gripping device, the rod will not be released until the mechanism is released eith manual force or by an actuator (not shown) or other means.
This gripping device can be applied either in existing rodding shops or in the electrol production areas where there is a need for mowing an anode assembly with the lifting cr
The release mechanism can be modified slightly to make an operator able to release hanger from floor level in the production area.
The gripping device has one HSE aspect as it can eliminate the need for using Polyes round sling or other lifting equipment that will require the operator to climb to the top o anode rod to release it.

Claims (9)

Claims
1. A gripping device (21) mating an anode rod (1) that is provided with a recess (9) between two legs (2, 3) at its top end, and further provided with a bore in each leg, where a bolt (6) is securely fixed in the legs and thus representing a lifting point for the anode rod,
c h a r a c t e r i s e d in t h a t
the gripping device (21) has an overall frame structure (15, 15’) provided with two locking elements (7, 8) pivotably arranged in supports (9, 10) wherein the locking elements (7, 8) are allowed to rotate from a first fixed position to provide a gap between them as the lifting device (21) and the top end of the anode rod (1) are mated, wherein the locking elements (7, 8), after the bolt (6) has passed the gap, are rotated back to the fixed positon, thereby locking the lifting device (21) to the anode rod (1).
2. A gripping device (21) in accordance with claim 1,
c h a r a c t e r i s e d i n t h a t
the locking elements (7, 8) are fixed by abutting on supporting parts (7 ’ 8’) of the support (9, 10).
3. A gripping device (21) in accordance with claim 1,
c h a r a c t e r i s e d i n t h a t
the locking elements (7, 8) are pivotably arranged in the support (9, 10) by means of axles.
4. A gripping device (21) in accordance with claim 1,
c h a r a c t e r i s e d i n t h a t
the supports (9, 10) are arranged for outwardly linear movement in the overall structure (15, 15’) of the gripping device, for release.
5. A gripping device (21) in accordance with claim 1,
c h a r a c t e r i s e d i n t h a t
it comprises guiding skirts (16, 16’) to facilitate the entering of the gripping device (21) at the top of the anode rod (1).
6. A method for operating a gripping device (21) for an anode rod (1) provided with a recess (9) between two legs (2, 3) at the top end, and provided with a bore in each flank, where a bolt (6) is securely fixed in the legs and represents the lifting point for the anode rod,
c h a r a c t e r i s e d i n t h a t
the gripping device (21) and the top of the anode rod (1) are positioned relatively to each other, and where said parts are mutually approaching each other, where the bolt (6) pass through a temporary gap formed by rotation of two locking elements (7, 8) pivotably arranged in a support (9 ,10) wherein, after the bolt has passed the gap, the locking elements are rotated back to a position fixed by abutments (7’, 8’) of the support (9, 10) and thereby closing the gap and locking the lifting device to the anode rod.
7. A method in accordance with claim 6,
c h a r a c t e r i s e d in t h a t
the anode rod (1) can be released from the gripping device (21) by moving at least one support (9, 10) apart from the other, and thereby forming a gap between the locking elements (7, 8) allowing the bolt (6) to pass in a reverse direction through said gap.
8. A method in accordance with claim 6,
c h a r a c t e r i s e d in t h a t
the supports (9, 10) are arranged for linear movement in an overall frame structure (15 ,15’), and can be moved manually by means of handles (13,14).
9. A method in accordance with claim 8,
c h a r a c t e r i s e d i n t h a t
the supports (9, 10) are arranged for linear movement in an overall frame structure (15, 15’), and can be moved by an actuator via means of handles (13, 14) or two actuators, one for each support.
NO20170883A 2017-05-29 2017-05-29 Device for gripping an anode for lifting operations and method for operating same NO343337B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO20170883A NO343337B1 (en) 2017-05-29 2017-05-29 Device for gripping an anode for lifting operations and method for operating same
PCT/EP2018/059241 WO2018219538A1 (en) 2017-05-29 2018-04-11 Device for gripping an anode for lifting operations and method for operating same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20170883A NO343337B1 (en) 2017-05-29 2017-05-29 Device for gripping an anode for lifting operations and method for operating same

Publications (2)

Publication Number Publication Date
NO20170883A1 true NO20170883A1 (en) 2018-11-30
NO343337B1 NO343337B1 (en) 2019-02-04

Family

ID=62143107

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20170883A NO343337B1 (en) 2017-05-29 2017-05-29 Device for gripping an anode for lifting operations and method for operating same

Country Status (2)

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NO (1) NO343337B1 (en)
WO (1) WO2018219538A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3093736B1 (en) * 2019-03-14 2021-02-19 Rio Tinto Alcan Int Ltd Intervention tool for the operation of an electrolysis cell
WO2021184132A1 (en) * 2020-03-17 2021-09-23 New Tech Copper Spa Pivoting anode trap
CN115890728B (en) * 2023-02-24 2023-06-02 长沙亨特科技有限公司 Rod piece grabbing mechanical arm

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862307U (en) * 1971-11-19 1973-08-08
US4032020A (en) * 1974-04-05 1977-06-28 Sumitomo Chemical Company, Limited Article exchanging apparatus
SU470185A1 (en) * 1970-12-18 1979-01-30 Всесоюзный научно-исследовательский и проектный институт алюминиевой, магниевой и электродной промышленности Device for transposing anode pins of aluminium electrolyzer
SU981457A1 (en) * 1981-05-08 1982-12-15 Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности "Вами" Device for gripping anode holder
US20100172544A1 (en) * 2006-06-09 2010-07-08 E.C.L. Method of measuring, on the fly, the height of an electrolysis anode
US7850218B2 (en) * 2003-02-28 2010-12-14 E.C.L. Handling clamp for a machine designed for tending an electrolytic cell used for the production of aluminium
WO2012032234A1 (en) * 2010-09-08 2012-03-15 E.C.L. Handling tool, for secure handling of connectors of electrolysis cells intended for aluminium production
AU2011273335A1 (en) * 2010-06-28 2013-01-31 Rio Tinto Alcan International Limited Device for extracting short-circuiting wedges when switching in an electrolysis cell for the production of aluminium
WO2016130014A1 (en) * 2015-02-13 2016-08-18 Norsk Hydro Asa An anode for use in an electrolysis process for production of aluminium in cells of hall-heroult type, and a method for making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60023530D1 (en) * 2000-12-19 2005-12-01 Reel Saint Cyr Au Mont D Or Lifting device for the anode support in electrolysis furnaces for aluminum production

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU470185A1 (en) * 1970-12-18 1979-01-30 Всесоюзный научно-исследовательский и проектный институт алюминиевой, магниевой и электродной промышленности Device for transposing anode pins of aluminium electrolyzer
JPS4862307U (en) * 1971-11-19 1973-08-08
US4032020A (en) * 1974-04-05 1977-06-28 Sumitomo Chemical Company, Limited Article exchanging apparatus
SU981457A1 (en) * 1981-05-08 1982-12-15 Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности "Вами" Device for gripping anode holder
US7850218B2 (en) * 2003-02-28 2010-12-14 E.C.L. Handling clamp for a machine designed for tending an electrolytic cell used for the production of aluminium
US20100172544A1 (en) * 2006-06-09 2010-07-08 E.C.L. Method of measuring, on the fly, the height of an electrolysis anode
AU2011273335A1 (en) * 2010-06-28 2013-01-31 Rio Tinto Alcan International Limited Device for extracting short-circuiting wedges when switching in an electrolysis cell for the production of aluminium
WO2012032234A1 (en) * 2010-09-08 2012-03-15 E.C.L. Handling tool, for secure handling of connectors of electrolysis cells intended for aluminium production
WO2016130014A1 (en) * 2015-02-13 2016-08-18 Norsk Hydro Asa An anode for use in an electrolysis process for production of aluminium in cells of hall-heroult type, and a method for making same

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Publication number Publication date
WO2018219538A1 (en) 2018-12-06
NO343337B1 (en) 2019-02-04

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