EP2578523B1 - Agencement pour le transfert de charges, en particulier des charges allongées, en rapport avec la production de réseaux de fibres - Google Patents

Agencement pour le transfert de charges, en particulier des charges allongées, en rapport avec la production de réseaux de fibres Download PDF

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Publication number
EP2578523B1
EP2578523B1 EP11183680.5A EP11183680A EP2578523B1 EP 2578523 B1 EP2578523 B1 EP 2578523B1 EP 11183680 A EP11183680 A EP 11183680A EP 2578523 B1 EP2578523 B1 EP 2578523B1
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EP
European Patent Office
Prior art keywords
roll
pallet
transfer device
parent
rolls
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.)
Active
Application number
EP11183680.5A
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German (de)
English (en)
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EP2578523A1 (fr
Inventor
Petri Enwald
Teppo Kojo
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Valmet Technologies Oy
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Valmet Technologies Oy
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Publication date
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Priority to EP11183680.5A priority Critical patent/EP2578523B1/fr
Priority to CN2012204738529U priority patent/CN202784974U/zh
Publication of EP2578523A1 publication Critical patent/EP2578523A1/fr
Application granted granted Critical
Publication of EP2578523B1 publication Critical patent/EP2578523B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
    • B65H19/126—Lifting, transporting, or inserting the web roll; Removing empty core with both-ends supporting arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/40—Holders, supports for rolls
    • B65H2405/42—Supports for rolls fully removable from the handling machine
    • B65H2405/422—Trolley, cart, i.e. support movable on floor
    • B65H2405/4228—Trolley, cart, i.e. support movable on floor with air bearing, e.g. Luftkissen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • present invention relates to producing fiber web in a fiber web machine. Specifically, but not exclusively, the invention relates to the transferring of loads, in particular elongate loads, such as reeling shafts, parent rolls, beams of cranes, rolls and machine parts. More especially, but not exclusively the present invention relates to an arrangement according to preamble part of claim 1.
  • a typical production and treatment line comprises a head box, a wire section and a press section as well as a subsequent drying section and a reel-up.
  • the production and treatment line can further comprise, for example, a calender.
  • the production and treatment line also typically comprises at least one slitter-winder for forming customer rolls as well as a roll packaging apparatus.
  • Prior art arrangements for transferring loads were disclosed in EP 1 266 091 B1 as well as DE 20 2010 003 281 U1 .
  • fiber webs such as paper or board webs, are manufactured in machines together forming a fiber web manufacturing line, which may be hundreds of meters long. Modern paper machines may produce more than 450,000 tons of paper per year. The speed of a paper machine may exceed 2000 m/min and the width of a paper web may be more than 11 meters.
  • manufacturing operates as a continuous process.
  • the finished fiber web being output from the machine is wound with a reel-up around a reeling shaft, i.e., a reel spool, into a parent roll (machine roll), the diameter of which may be more than 5 meters and which may weigh more than 160 tons.
  • the purpose of the winding is to transfer the fiber web from its planar manufacturing form into a form in which it can be handled more easily.
  • the continuous process of the machine is interrupted for the first time, after which the process continues in stages. Every attempt is made to interlink these stages as smoothly as possible so that the work already performed would not be wasted.
  • the web of the parent roll generated during manufacture is full-width and even more than 100 km long, so it must be cut into partial webs of a suitable width and length for customers and wound around cores into "customer rolls" before dispatch from the mill.
  • this slitting and winding of the web takes place in a separate machine fitted to the purpose, i.e., a slitter-winder.
  • the parent roll is unwound in the unwinding station and the broad web is slit with the slitting section into a number of narrower partial webs, which are wound with the winding section around winding spools such as cores into customer rolls.
  • the slitter-winder is stopped and the customer rolls, or "set", are removed from the machine. After this, the process continues with the winding of a new set. These stages are repeated periodically until the paper on the parent roll runs out, at which point the parent roll is replaced and the operation restarts with the winding of a new parent roll.
  • the transfer of a parent roll forwards in the process takes typically place rolling along rails either on the basis of gravity (inclined rails) or moved by a separate transfer device.
  • the move forward from the reel-up may also be carried out using a lifting device, such as a hoist.
  • the parent roll is normally conveyed with a hoist to such a slitter-winder that is not connected to the paper machine with transfer rails and lowered to transfer rails.
  • the parent roll is transferred along the transfer rails from the reel-up to the slitter-winder.
  • the parent roll may also be conveyed with a crane directly to an unwinding station.
  • the parent roll is typically conveyed to such unwinding stations that is not connected to the paper machine with transfer rails with a crane and lowered to transfer rails.
  • the parent roll is transferred along the transfer rails from reel-up to the unwinding station.
  • the transfer rails for full parent rolls consist of horizontal or inclined rails with stand-by stations.
  • the parent roll is transferred from one stand-by station to another until the unwinding station is reached.
  • With horizontal transfer rails the parent roll is transferred from one stand-by station to another by means of a transfer device, and with inclined transfer rails, by means of rolling based on gravity and stop and release mechanisms.
  • the parent roll in some cases is also transferred from the reel-up to the unwinding station by a transfer cart and for example in publication EP 1266091 B1 is disclosed a transfer cart supported on a floor, used for transferring parent rolls at the height of transfer rails for parent rolls.
  • An unwinding station of typically comprises an unwind stand which holds the parent roll up during unwinding.
  • the unwind stand comprises a first unwind stand on the driving side and another unwind stand on the tending side.
  • the ends of the parent roll are on these unwind stands during unwinding.
  • Locking arms are fastened to the unwind stand with joints; the arms are used for locking the parent roll in place during unwinding.
  • a parent roll located in an unwinding station is connected to a brake generator, which functions as a drive of the unwinder.
  • a reeling shaft handling apparatus comprises either vertical lifting devices or rotatable lifting arms and return rails for empty reeling shafts, located above the transfer rails for parent rolls, often also above the unwinding station or above the slitter-winder.
  • An empty or nearly empty reeling shaft is lifted with a lifting device or with lifting arms to return rails, which normally have a number of return positions.
  • reeling shaft storage is located above the unwinding station.
  • the reeling shaft is transferred from one station to another either by means of a transfer device or by means of rolling based on gravity using stop and release mechanisms.
  • the empty winding shaft is removed from the return rails by lowering devices and moved to the reel-up of the machine with a crane or by a transfer cart.
  • the return rails may also be connected directly to the reel-up's reeling shaft storage rails, whereby the reeling shaft may be transferred directly from the unwinding station to the reel-up.
  • a parent roll needs to be moved in the lateral direction from a rail line defined by a reel-up to, e.g., another device or to e.g. a storage location, which may be located in an aisle of the building, a transfer cart supported on a floor is typically used for the lateral transfer, in which case the parent roll is loaded from the end of the transfer rails or lifted with a crane.
  • the transfer cart for example as described in the mentioned EP patent 1266091 integrates the functions of a steel structure sufficient for supporting the heavy parent roll, in some cases, an apparatus section necessary for moving the parent roll, an energy transfer/storage arrangement necessary for producing kinetic energy, actuators necessary for receiving and handing over the parent roll and their power supply, and safety devices to secure the automated functions.
  • a transfer cart to move and hand over parent rolls on the rails of the receiving station or to be lifted with a crane.
  • Such transfer carts are provided with fixed rails and so the carts may only operate in a certain area defined by the rails.
  • the driving order of the parent rolls cannot be changed with reel carts; rather, when changing the driving order, parent rolls must be lifted with a crane.
  • the reeling shaft handling solutions implemented in the prior art are complex, inflexible and expensive. For example, it is difficult to make paths of reeling shaft and parent roll transfer carriages, transfer rails, and transfer and conveyance routes of cranes adjust to changing needs. It is difficult to turn winding shafts and parent rolls with transfer carts that are supported on rails and/or wheels. The moving and turning of winding shafts and parent rolls imposes special requirements and takes room with transfer carts that are supported on rails and/or wheels.
  • the handling solutions for reeling shafts require expensive concrete and steel beam structures implemented according to the full parent roll in order to hold up lifting devices, such as cranes. The crane capacity may be reserved, in which case the crane may not be able to respond to transfer needs at a short notice. In some cases the machine hall height is not enough for arranging return rails for reeling shafts above the parent roll transferring rails or for the use of a crane.
  • EP 2116464 A2 discloses a reel vehicle that has a chassis with wheels or an air cushion support provided on a driving surface. On top of the chassis a slidable, rotatable and/or extendable upper holder has been located for holding a reeling shaft, a roll and a customer roll and the holder has variable functional elements for fixing the load.
  • the holder also has multiple drive units and a blocking element that blocks variable paths in a spatial direction and that is coupled with the holder in order to block space formed in an edge area of the chassis.
  • EP 2116495 A2 discloses an adapter for wheel vehicle that has a chassis comprising wheels or an air cushion support provided on a driving surface.
  • the chassis has an upper side-arranged holder for a tambour.
  • a supporting frame is arranged to be supported on the holders for receiving differently dimensioned loads.
  • the supporting frame is detachable connected with the holders.
  • WO 2010125232 discloses a movable support apparatus, supported on a floor and movable between at least two target stations, for receiving, moving and handing over rolls, winding shafts and/or parent rolls intended for the handling of fiber web, the movable support apparatus comprising support members for holding up a load being handled at both its support ends.
  • This prior art movable support apparatus is adapted to be supported on the floor with at least one air cushion element and the movable support apparatus is movable between at least two devices of a fiber web manufacturing process.
  • WO 2010125232 also discloses a handling system for receiving, moving and handing over rolls, winding shafts and/or parent rolls intended for the handling of a fiber web by means of a movable support apparatus supported on a floor and movable between at least two target stations, the movable support apparatus comprising support members for holding up the load being handled at both its support ends and the handling system comprises at least two movable support apparatuses that are movable between at least two devices of a fiber web manufacturing process and that are of the type disclosed in this publication.
  • An object of the present invention is to create a new arrangement for transferring loads in connection with the production of fiber web.
  • an object of the present inventions is create a new arrangement for transferring elongate loads, such as parent rolls and reeling shafts and rolls and beams of cranes and machine parts, in connection with the production of fiber web.
  • an object of the present invention is to achieve simple, flexible and cost effective arrangement for transferring loads in connection with production of fiber webs and especially in connection with transferring of elongate loads in connection with a production line for fiber webs.
  • One object of the present invention is to eliminate or at least minimize disadvantages and problems relating to arrangements according to prior art.
  • One, non-obligatory object is to further improve the in WO 2010125232 disclosed movable support apparatus.
  • the arrangement for transferring loads, in particular elongate loads, such as parent rolls and/or reeling shafts and/or beams of cranes and/or rolls, in connection with production of fiber web comprises at least one transfer device, at least one pallet that is provided for transferring of machine rolls and/or reeling shafts i.e. parent roll pallet, and at least one pallet that is provided for transferring rolls i.e. roll pallet, specially for transfer between a fiber web machine and a roll maintenance location.
  • the pallet for rolls i.e. the roll pallet is rigid such that weight of the load is substantially evenly divided in relation to the transfer device even in situations where dimensions of the elongate load alternate.
  • the roll pallet and the parent roll pallet are supported on the floor and are lifted with the aid of the transfer device off the floor for transferring.
  • the lifting is accomplished by an air cushion provided in the transfer device.
  • At least the parent rolls are transferred with the aid of the parent roll pallet that comprises support structures for supporting the parent roll at its both ends at a height such that the fiber roll surface is at a distance from the pallet surface facing the roll.
  • This pallet can also be used for transporting reeling shafts, reject rolls and partially wound/unwound parent rolls.
  • empty reeling shafts are also meant such reeling shafts that may have layers of fiber web around, for example reject rolls and partially unwound parent rolls
  • the arrangement for transferring loads, in particular elongate loads and as shown the arrangement comprises a movable transfer device 10 that is supported on the floor or corresponding horizontal level of the machine hall of the fiber web production line.
  • the transfer device 10 comprises at least one air cushion for moving the transfer device on the floor in desired directions and for lifting the pallet 11 to a distance from the floor level such that the pallet 11 is not in contact with the floor during the transferring movements.
  • the pallet 11 is a parent roll pallet provided for transferring parent rolls 12 and has support structures 11 A, 11 B for supporting the parent roll 12 from its ends 12A, 12B.
  • the pallet 11 for parent rolls 12 is of U-shape in side view such that the arms of the U create the support structures 11 A, 11 B for the ends 12A, 12B of the parent roll 12.
  • the transfer device 10 is advantageously of the type described in WO 2010125232 but it can also be constructed as devices know from prior art and are as such known to one skilled in the art. For example it can be constructed to be movable on wheels and having a separate mechanism for lifting the pallet for transportation.
  • the parent roll pallet 11 is releasably attached to the transfer device 10 for transportation so that when loading the parent roll pallet 11 with a parent roll 12 on the transfer device 10 the transfer device 10 is moved under the parent roll pallet 11 and then the at least one air cushion lifting effect is activated and thus the transfer device 10 loaded the parent roll pallet 11 with a parent roll 12 is ready for transfer movement to the desired target destination.
  • At least the parent rolls 12 are transferred with the aid of the parent roll pallet 11 that comprises support structures for supporting the parent roll at its both ends at a height such that the fiber web parent roll 12 surface is at a distance from the parent roll pallet 11 surface facing the parent roll 12.
  • This parent roll pallet 11 can also be used for transporting reeling shafts or reject parent rolls partially wound/unwound parent rolls 12 with more or less fiber web still around the reeling shaft.
  • the arrangement further comprises a roll pallet 13 that is provided for transferring rolls 14, especially between a fiber web machine and a roll maintenance or storage location.
  • the roll pallet 13 is releasably attached on the transfer device.
  • the roll 14 is for example of a device of a fiber web machine, for example a calender roll, a suction roll, a press roll, a coater roll, a guide roll etc.
  • This roll pallet 13 for rolls 14 is of a simple construction for example a flat bed on which the roll 14 to be transferred is loaded so that it is laying on the top surface of the roll pallet 13 supported on its mantle.
  • the transfer device 10 is the same than in figures 1 and 3 or in embodiments where the arrangement in connection with the fiber web machine comprises more transfer devices 10 of substantially the same type of transfer device 10 advantageously similar.
  • the arrangement further comprises a roll pallet 13 that is provided for transferring rolls 14 and other elongate loads, especially between a fiber web machine and a roll maintenance or storage location to be releasably attached on the transfer device.
  • the roll 14 is of a device of a fiber web machine, for example a calender roll, a suction roll, a press roll, a coater roll, a guide roll etc.
  • the roll pallet 13 is used for transferring elongate loads excluding parent rolls.
  • the roll pallet 13 is also usable for transferring crane beams, machine parts etc.
  • the transfer device 10 is the same than in figures 1 and 3 or in embodiments where the arrangement in connection with the fiber web machine comprises more transfer devices 10 of substantially the same type of transfer device 10 advantageously similar.
  • the roll pallet 13 is releasably attached to the transfer device 10 for transportation so that when loading the pallet 13 with a roll 14 on the transfer device 10 the transfer device 10 is moved under the roll pallet 13 and then the at least one air cushion lifting effect is activated and thus the transfer device 10 loaded the roll pallet 13 with a roll 14 is ready for transfer movement to the desired target destination.
  • the roll pallet 13 provided for transferring of rolls 14 is rigid such that weight of the load is substantially evenly divided in relation to the transfer device 10 even in situations where dimensions of the elongate loads alternate.
  • the roll pallet 13 is of a simple construction for example a flat bed on which the roll 14 to be transferred is loaded.
  • a roll pallet 13 transferring a roll 14 so that the roll 14 is laying on the top surface of the roll pallet 13 supported on its mantle.
  • This kind of transportation is suitable for example for rolls with hard surface and no special requirements of surface quality.
  • This kind or transportation is also suitable for beams of cranes and for many types of machine parts.
  • a roll pallet 13 transferring a roll 14 so that the roll 14 is supported at its ends on bocks 16.
  • the bocks 16 are as such known to one skilled in the art and are usually of wood and often used also in storage locations for rolls.
  • the bocks 16 may be releasably attached on the pallet 13 or they might be unattached.
  • a roll pallet 13 transferring a short roll 14 so that the roll 14 is supported at its ends on bocks 16.
  • Figure 2D shows schematically a side view of a bock 16 used when transferring a roll supported from its ends in connection with examples shown in figures 2B - 2C .
  • the bocks 16 are as such known to one skilled in the art and are usually of wood and often used also in storage locations for rolls.
  • the bocks 16 may be releasably attached on the pallet 13 or they might be unattached.
  • FIGS. 2A - 2C are shown examples in which only one load is supported on the roll pallet 13.
  • more than one load can be transferred simultaneously on one roll pallet 13.
  • at least two short rolls can be located successively and/or at least two rolls with small diameter juxtaposed on the same roll pallet 13.
  • the load can be dimensioned such that a part of it might exceed an edge of the pallet.
  • loads are supported on the pallet one on the other.
  • the pallets 11, 13 are supported on the floor by support parts 11C, 11 D; 13C, 13D and lifted with the aid of the transfer device 10, advantageously by at least one air cushion off the floor for transferring.
  • the pallets 11, 13 have an opening or a space for the transfer device 10 on the side facing the floor such that the transfer device 10 is movable under the pallet 11, 13 while the pallet 11, 13 is supported on the floor by the support parts 11C, 11 D; 13C, 13D.
  • FIG 5 is shown schematically a layout presentation of an example of utilizing one example of the invention.
  • the transferring arrangement is utilized in connection with finishing end of a fiber web machine.
  • the arrangement is provided for transfers in connection with a reel-up 21, an unwinder 22 of a slitter-winder and a roll storage area 20 and in connection with further devices not shown but are apparent to one skilled in the art.
  • a finished parent roll 12 is loaded on a transferring device 10 on a parent roll pallet 12 and is ready or transfer to the desired location for example to the unwinder 22 of the slitter-winder or to the parent roll storage area 24.
  • a transfer device 10 with a roll pallet 13 is ready for taking over a roll or other load transfer in a waiting position.
  • One pallet 11; 13 is also shown in a storage location.
  • the transfer device 10 is movable on the floor level in desired directions, in X- and Z directions and in all directions in between and it is also usable for turning movements.
  • the arrangement for transferring elongate loads in connection with production of fiber webs comprises a transfer device 10 that is according to the need of production provided for transfer either with a parent roll pallet or a roll pallet.
  • the arrangement comprises at least one transfer device 10 and at least one parent roll pallet 11 and at least one roll pallet 13 but according to the needs of production more transfer devices and more pallets can be provided.
  • the transfer device 10 may be manually driven and/or automatic.
  • the transfer device 10 may be switched to a manual drive mode or an automatic drive mode.
  • An apparatus section necessary for the transfer device 10 may be arranged in the transfer device, such as a drive and wheels, en energy transfer arrangement necessary for producing kinetic energy and/or an energy storage arrangement, such as compressed-air hoses, cables, etc. or batteries.
  • 'floor' refers to such an even support plane on which the movable support apparatus may be moved by means of air cushion technology, such as a machine hall floor, the floors and support planes in the aisles of the building, and the surface of the ground outside the building.
  • the transfer device 10 may be moved over minor unevenness on the support plane.
  • the target station of the transferring arrangement may be a device of the fiber web manufacturing process e.g. a reel-up or an unwinder, a storage area, a storage rail, a transfer rail, a reject location, a location related to roll maintenance, such as a roll grindery.
  • the target stations may be within the area of one or more machine halls and/or within the area of one or more fiber web manufacturing processes and/or within the area of one or more fiber web manufacturing lines.

Landscapes

  • Replacement Of Web Rolls (AREA)

Claims (8)

  1. Agencement pour le transfert de charges, en particulier de charges allongées, telles que des rouleaux parents, des axes de bobine, des rouleaux, des poutres de grues et/ou des pièces de machine, entre au moins deux stations cibles (20 ; 21 ; 22) en connexion avec la production de nappes de fibres, ledit agencement comprenant au moins un dispositif de transfert (10), caractérisé en ce que l'agencement comprend au moins deux types différents de palettes (11, 13) qui sont déplacées par le même dit au moins un dispositif de transfert (10), et en ce qu'au moins une palette (11), c'est-à-dire la palette de rouleau parent (11), est pourvue pour transférer des rouleaux parents (12) et/ou des axes de bobine (15), et au moins une palette (13), c'est-à-dire une palette de rouleau (13), est pourvue pour transférer des rouleaux (14), et en ce que dans l'agencement, la palette de rouleau parent (11) et la palette de rouleau (13) peuvent être échangées sur/depuis le dispositif de transfert (10) et les palettes (11, 13) sont attachées de manière amovible au dispositif de transfert (10).
  2. Agencement selon la revendication 1, caractérisé en ce que, dans l'agencement, le dispositif de transfert (10) comprend au moins un coussin d'air.
  3. Agencement selon la revendication 1, caractérisé en ce que, dans l'agencement, le dispositif de transfert (10) comprend des roues.
  4. Agencement selon la revendication 1, caractérisé en ce que le dispositif de transfert (10) est supporté au sol ou sur un niveau horizontal correspondant de la salle des machines de la ligne de production de nappe de fibres.
  5. Agencement selon la revendication 1, caractérisé en ce que la palette de rouleau (13) est rigide, de telle sorte que le poids de la charge est distribué de manière substantiellement uniforme par rapport au dispositif de transfert (10), même dans des situations où les dimensions de la charge allongée alternent.
  6. Agencement selon la revendication 1, caractérisé en ce que la palette de rouleau (13) et la palette de rouleau parent (11) sont supportées au sol et sont levées à l'aide du dispositif de transfert (10) à une hauteur au-dessus du sol pour être transférées.
  7. Agencement selon la revendication 1, caractérisé en ce que la palette (11) pour rouleaux parents (12) présente substantiellement une forme de U en vue latérale, de telle sorte que les bras du U créent les structures de support (11 A, 11 B) pour les extrémités (12A, 12B) du rouleau parent (12).
  8. Agencement selon la revendication 7, caractérisé en ce que les palettes (11, 13) sont supportées au sol par des pièces de support (11C, 11 D ; 13C, 13D) et en ce que les palettes (11, 13) comportent une ouverture ou un espace pour le dispositif de transfert (10) sur le côté faisant face au sol, de telle sorte que le dispositif de transfert (10) peut être déplacé sous la palette (11, 13) alors que la palette (11, 13) est supportée au sol par des pièces de support (11C, 11 D; 13C, 13D).
EP11183680.5A 2011-10-03 2011-10-03 Agencement pour le transfert de charges, en particulier des charges allongées, en rapport avec la production de réseaux de fibres Active EP2578523B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11183680.5A EP2578523B1 (fr) 2011-10-03 2011-10-03 Agencement pour le transfert de charges, en particulier des charges allongées, en rapport avec la production de réseaux de fibres
CN2012204738529U CN202784974U (zh) 2011-10-03 2012-09-17 与纤维幅材生产关联的转移载物特别是长形载物的设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11183680.5A EP2578523B1 (fr) 2011-10-03 2011-10-03 Agencement pour le transfert de charges, en particulier des charges allongées, en rapport avec la production de réseaux de fibres

Publications (2)

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EP2578523A1 EP2578523A1 (fr) 2013-04-10
EP2578523B1 true EP2578523B1 (fr) 2017-06-28

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CN106185210A (zh) * 2016-08-22 2016-12-07 温州光明印刷机械有限公司 轨道式膜卷推车装置

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CN202784974U (zh) 2013-03-13
EP2578523A1 (fr) 2013-04-10

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