EP2804991B1 - Saugkopf für eine baggerschiff und entsprechendes verfahren - Google Patents

Saugkopf für eine baggerschiff und entsprechendes verfahren Download PDF

Info

Publication number
EP2804991B1
EP2804991B1 EP13719602.8A EP13719602A EP2804991B1 EP 2804991 B1 EP2804991 B1 EP 2804991B1 EP 13719602 A EP13719602 A EP 13719602A EP 2804991 B1 EP2804991 B1 EP 2804991B1
Authority
EP
European Patent Office
Prior art keywords
suction head
nozzle
suction
dredging
nozzles
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.)
Not-in-force
Application number
EP13719602.8A
Other languages
English (en)
French (fr)
Other versions
EP2804991A1 (de
Inventor
Erik Van Wellen
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.)
Baggerwerken Decloedt and Zoon NV
Original Assignee
Baggerwerken Decloedt and Zoon NV
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 Baggerwerken Decloedt and Zoon NV filed Critical Baggerwerken Decloedt and Zoon NV
Publication of EP2804991A1 publication Critical patent/EP2804991A1/de
Application granted granted Critical
Publication of EP2804991B1 publication Critical patent/EP2804991B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/025—Rotational joints
    • B05B3/026—Rotational joints the fluid passing axially from one joint element to another
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E02F3/9268—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like

Definitions

  • the invention relates to a suction head for a dredging vessel.
  • the invention likewise relates to a dredging device comprising a dredging vessel adapted for movement in a direction of movement, a dredge pump placed on the dredging vessel and having a suction connection, a suction conduit connecting the suction head to the suction connection of the dredge pump, and support means placed between the dredging vessel and the suction head for supporting the suction conduit.
  • the invention further relates to a method for dredging ground using this suction head.
  • Dredging devices of the above stated type are for instance known from EP-A-0892116 .
  • the known suction head comprises a tube construction which can be connected to a suction conduit of a dredging vessel and has side walls, an upper wall and a lower wall directed toward the bottom.
  • the rear wall for instance in the form of a rotatable visor, is further provided with a toothed beam which runs transversely of the direction of movement and which is provided on the bottom side with teeth for dislodging material for dredging from the bottom.
  • a series of wear heel pieces together forming the heel plate are arranged on the underside (the bottom side) of the tube construction at the position of the connection to the visor.
  • Such a suction head is dragged forward over or in the bottom for dredging, wherein the suction head rests via the heel plate on the underwater bottom and wherein the teeth dislodge the bottom and the loosened bottom material is suctioned away via the suction conduit, for instance to a bin present on the dredging vessel.
  • a suction head is therefore also referred to as trailing hopper suction head.
  • an underpressure will be built up in the suction head which depends on, among other factors, the extent of sealing of the suction head.
  • the built up underpressure provides for suction of dredged bottom material, wherein, inevitably, water is likewise suctioned in from the outside.
  • EP 1653010 A1 relates to a drag head with cutting tools for penetrating an underwater bottom according to the preamble of independent claim 1.
  • the described drag head reduces the cutting resistance of the underwater bottom by providing the drag head with nozzles.
  • First nozzles are intended to eliminate the pore pressure of the bottom material, while second nozzles dilute the dislodged bottom material in order to facilitate suctioning thereof.
  • the known suction head has the drawback that the dredging efficiency may decrease during dredging. This is a particular problem in the dredging of underwater bottoms comprising clay, loam and other cohesive materials.
  • DE 4226492 A1 describes a trailing suction hopper dredger for increasing the depth of a relatively hard bottom layer.
  • nozzles which inject water under high pressure into the underwater bottom and thereby weaken it.
  • the nozzles can be situated on a rotatable plate, wherein the axes of the rotating nozzles run parallel to the rotation axis of the rotating plate.
  • the present invention has for its object to provide a suction head for a dredging vessel with which underwater bottoms, particularly bottoms comprising clay, loam and other cohesive materials, can be dredged with an improved efficiency compared to the known suction head.
  • efficiency is understood to mean the volume of bottom material which can be dredged per unit of time and per unit of power.
  • a suction head for a dredging vessel comprising a construction of side walls and a rear wall running substantially transversely of the direction of movement of the suction head, which construction is connectable to a suction conduit of the dredging vessel and is provided with cutting tools for penetrating into an underwater bottom
  • the suction head further comprises at least one nozzle for ejecting a liquid jet under pressure, and the at least one nozzle is rotatable around a rotation axis which does not coincide with the axis of the nozzle (or the liquid jet in stationary position of the nozzle), wherein the at least one nozzle is moreover directed toward the interior of the suction head in order to eject a liquid jet into the interior.
  • the invented suction head has been found able to dredge bottoms with an improved efficiency compared to the known suction head. Good results are achieved particularly in the case of underwater bottoms comprising clay. Providing the suction head with rotatable nozzles achieves that the bottom for dredging or underwater bottom parts already suctioned in and present in the suction head can be cut into smaller portions in efficient manner, whereby the risk of blockage is found to decrease noticeably.
  • the non-coincidence of the rotation axis of the at least one nozzle with the axis of the at least one nozzle does not - according to an embodiment of the invented suction head - preclude the rotation axis and the axis intersecting each other at a point. This creates a cone-like swirling pattern of the ejected liquid jets, so greatly enhancing efficiency.
  • a suction head wherein the rotation axis is eccentric to the axis of the nozzle (or the liquid jet in stationary position of the nozzle).
  • the at least one nozzle can in principle be located in and in the vicinity of the suction head, and the ejected liquid jet can in principle be directed at random.
  • the suction head is characterized in that the at least one nozzle is directed toward the interior of the suction head in order to eject a liquid jet into the interior. Because the at least one nozzle rotates, the ejected liquid jet covers a large part of the interior of the suction head. Due to the action of the liquid jet or jets a large part of the bottom material which may be present in the suction head is cut into smaller portions, which can then be discharged more easily via the suction pipe connected to the suction head.
  • a further embodiment of the suction head according to the invention is characterized in that the nozzles form a series, the series of nozzles being disposed in a straight line running transversely of the direction of movement of the suction head.
  • the bottom material possibly present in the suction head is hereby cut in the transverse direction of the suction head by the action of the liquid jets ejected from the series of nozzles, wherein these liquid jets preferably overlap and reinforce each other.
  • the number of nozzles in the suction head according to the invention can be chosen within broad limits, it is advantageous for the suction head to comprise between two and twenty nozzles, which still more preferably form a series disposed in a straight line running transversely of the direction of movement of the suction head.
  • Yet another embodiment of the suction head according to the invention is characterized in that the cutting tools form a series, the series of cutting tools being disposed in a straight line running transversely of the direction of movement of the suction head, and wherein the nozzles are located above the series of cutting tools. It has been found that such an embodiment can prevent premature damage and/or blockage of the nozzles. The useful life of the cutting tools can also be extended in this embodiment, and time can be saved in that on average fewer broken or blunted cutting tools have to be replaced.
  • the number of cutting tools of the suction head according to the invention can be chosen within broad limits.
  • the number of cutting tools in a series preferably amounts to at least ten, more preferably at least fifteen and most preferably at least twenty.
  • the number of series preferably lies between one and ten, more preferably between one and fifteen, and the number of series most preferably amounts to two. With this preferred variant a good compromise is made between the dredging efficiency and the power required to drag the suction head over and/or in the bottom in the direction of movement.
  • Yet another embodiment according to the invention provides a suction head, wherein it comprises a heel plate which runs substantially transversely of the direction of movement of the suction head and with which the suction head can support on the underwater bottom, and the at least one nozzle is mounted on the heel plate, wherein in a further preferred embodiment this nozzle is directed toward the interior of the suction head in order to eject a liquid jet into the interior.
  • the heel plate is generally located on the upstream side (relative to the direction of movement of the suction head) of the cutting tools, in such an embodiment the liquid jets will be ejected into the suction head substantially in the downstream direction. It has been found that this can bring about more efficient cutting of bottom material possibly present in the suction head.
  • a further embodiment of the suction head according to the invention comprises at least one nozzle which is oriented in the direction of the underwater bottom in order to eject a liquid jet into this bottom.
  • One or more of such nozzles can fluidize or otherwise loosen the underwater bottom at the position of the impact of the liquid jets, whereby the problem of blockage of the suction head could occur less.
  • the suction head with cutting tools in the form of the known teeth
  • other types of cutting tool can if desired be used, such as for instance teeth or tipped bits which are rotation-symmetrical on at least their free outer end.
  • the toothed beam can if desired be provided with coupling means, such as for instance holders in which the cutting tools can be accommodated.
  • the suction head comprises at least one rotating nozzle for injecting a liquid under pressure, preferably water.
  • the nozzles can operate at relatively low pressures, preferably of a maximum of 50 bar, more preferably a maximum of 30 bar, and most preferably a maximum of 15 bar.
  • the liquid jets generated by the nozzles under such pressures are particularly adapted to spray clean the cutting tools and the space in the interior of the suction head, in other words, remove bottom material and other materials therefrom. A good suctioning of dislodged bottom material is hereby achieved.
  • the nozzles can in principle be disposed in front of, behind or at the position of the cutting tools. It is also possible to provide the cutting tools themselves with rotating nozzles.
  • the invention further relates to a dredging device comprising a dredging vessel adapted for movement in a direction of movement, a suction head according to the invention connected to the dredging vessel, a dredge pump placed on the dredging vessel and having a suction connection, a suction conduit connecting the suction head to the suction connection of the dredge pump, and support means placed between the dredging vessel and the suction head for supporting the suction conduit.
  • Bottom material, and particularly bottom material comprising substantially clay can be suctioned up in efficient manner using the dredging device according to the invention.
  • the invention therefore also relates to a method for dredging bottom material under water with a dredging vessel equipped with a suction head according to the invention, wherein the suction head is dragged in a direction of movement over a bottom for dredging, this such that substantially only the cutting tools make contact with the bottom, and wherein the at least one nozzle is set into rotation and a liquid jet is ejected therefrom under pressure.
  • a liquid jet is ejected from the at least one nozzle before the cutting tools make contact with the underwater bottom and/or before the suction head is lowered onto the underwater bottom. Initial blockage of the suction head is hereby at least partially prevented.
  • the suction head according to the invention is particularly suitable for dredging an underwater bottom comprising substantially clay.
  • Figure 1 shows a dredging vessel 1 which is provided with a motor, not shown in the drawing, for driving a propeller 2 via a propeller shaft for the purpose of propelling dredging vessel 1. Also present are devices, not shown in the drawings, for steering dredging vessel 1, such as a rudder and transversely placed propellers for facilitating manoeuvring.
  • a dredge pump is arranged in dredging vessel 1.
  • a suction conduit 3 Arranged against a side wall of the dredging vessel is a suction conduit 3, one end of which is connected to the suction connection of the dredge pump.
  • the suction conduit 3 comprises two members 3a and 3b which are connected to each other by means of a coupling allowing some relative angular displacement.
  • the connection between upper member 3a of suction conduit 3 and the vessel also allows angular displacement in the vertical plane and about the axis.
  • this member is connected to a cable 4a, the other end of which is connected to a winch 5a.
  • a suction head 6 is arranged on the free end of second member 3b of suction conduit 3.
  • Suction head 6 comprises a construction 7 which is connectable to suction conduit 3 and takes the form of a closed tube construction with side walls 7a, 7b (only 7a is visible), an upper wall 7c and a lower wall 7d facing toward the bottom.
  • a visor 8 Arranged at the rear (the downstream side relative to the direction of movement P) of construction 7 is a visor 8 which is open only on the bottom side and which is connected to construction 7 for pivoting around a horizontal axis 9 and can thus be rotated up and downward by a hydraulic piston (not shown).
  • Visor 8 is further provided with a toothed beam 10 running transversely of the direction of movement P and provided on the bottom side with teeth 11 for dislodging material for dredging from the bottom.
  • a series of wear heel pieces Arranged on the underside of construction 7 is a series of wear heel pieces which together form a heel plate 12.
  • suction head 6 can also be provided with a number of lateral, knife-like wear strips 14.
  • visor 8 can rotate independently of construction 7. The desired penetration depth of teeth 11 into the bottom is controlled with the rotation of visor 8.
  • Teeth 11 dislodge the bottom, and the loosened bottom material is suctioned away via suction conduit 3, for instance to a bin present on dredging vessel 1.
  • the visor 8 is positioned independently of construction 7 so that the best possible sealing is achieved between visor 8 and the bottom.
  • suction head 6 is further provided with a series of nozzle units 20.
  • Nozzle units 20 form a series disposed in a straight line transversely of the direction of movement P of suction head 6.
  • the nozzles (20a, 20b) of nozzle units 20 are disposed such that they are directed toward the interior of suction head 6 in order to eject liquid jets 22 into the interior.
  • each nozzle unit 20 comprises two nozzles (20a, 20b) which are rotatable around a rotation axis 21 of nozzle unit 20.
  • Nozzle unit 20 comprises a fixed part 23 with which unit 20 can be fixed to a part of suction head 6, and a part 24 rotatable around rotation axis 21.
  • the rotation option can be embodied in any known manner.
  • Nozzles (20a, 20b) are adapted to eject two liquid jets (22a, 22b) under pressure.
  • the nozzle unit 20 is set into rotation around rotation axis 21, and rotation axis 21 does not coincide with the axes (23a, 23b) of nozzles (20a, 20b), the ejected liquid jets 22 will form a cone-like swirling pattern, as shown for instance in figure 6A . It is noted that the axes (23a, 23b) of nozzles (20a, 20b) coincide with the ejected liquid jets (22a, 22b) when nozzle unit 20 is in stationary position, wherein part 24 is not rotating around rotation axis 21.
  • the hydraulic coupling between fixed part 23 and rotatable part 24 of nozzle unit 20 can be embodied in a manner known to the skilled person, for instance with a swivel.
  • the liquid for liquid jets 22 is indeed preferably supplied via feed conduit 25 from a container (not shown) for the liquid under the required pressure.
  • the embodiment shown in figures 5A and 5B comprise a nozzle unit 20 with two nozzles (20a, 20b) which are arranged diametrically opposite each other and disposed at a peripheral angle 30 of about 170 degrees. Any other angle is however also possible, wherein the angle can for instance be chosen subject to the properties of the underwater bottom for dredging.
  • nozzle unit 20 can if desired also be provided with only one nozzle 20a. All that is necessary here is that rotation axis 21 of nozzle unit 20 does not coincide with axis 23a of the relevant nozzle 20a. As shown in figure 5B , this does not preclude axis 23a and rotation axis 21 intersecting each other at a virtual intersection 31. It is also possible for a nozzle unit 20 to be provided with three or more nozzles (20a, 20b, ).
  • nozzle units 20 are arranged on the likewise transversely extending toothed beam 10, just above teeth 11. It is also possible for the nozzle units to be situated between teeth 11 as seen in transverse direction. Teeth 11 do after all also form a series disposed in a straight line transversely of the direction of movement P of suction head 6.
  • nozzle units 20 are arranged on the likewise transversely extending heel plate 12, wherein the nozzles (20a, 20b) are oriented in the direction of the interior of suction head 6 in order to eject the liquid jets (22a, 22b) into the interior.
  • nozzle units 20 are on the one hand arranged on toothed beam 10 and on the other on the likewise transversely extending heel plate 12, wherein they are however oriented in the direction of the underwater bottom in order to eject a liquid jet 22c into this bottom.
  • Figure 6A shows the pattern of liquid jets (22a, 22b) produced by one nozzle unit 20 as shown in figures 5A and 5B and provided with two diametrically disposed nozzles (20a, 20b). Due to the rotation of nozzle unit 20 around axis 21 the liquid jets (22a, 22b) rotate around each other and form a swirling pattern.
  • Figures 6B and 6C show the pattern of liquid jets (22a, 22b) produced by a series of nine nozzle units 20 as shown in figures 5A and 5B which are disposed in line parallel to the transverse direction 32 and provided with two diametrically disposed nozzles (20a, 20b). Due to the rotation of each nozzle unit 20 around axis 21 the liquid jets (22a, 22b) of the mutually adjacent nozzle units 20 rotate around each other, whereby a fine cutting of the bottom material in suction head 6 can take place.
  • the cutting density can be set as desired by adjusting the number of nozzles per unit of length.
  • an underwater bottom, and particularly an underwater bottom comprising clay, loam and/or other cohesive material can advantageously be dredged, for which purpose the suction head is mounted on suction conduit 3 of dredging vessel 1 and lowered to the bottom and dragged thereover in the dragging direction P, this such that cutting tools 30 make contact with the bottom and nozzles (20a, 20b) are set into rotation around a rotation axis 21 and a liquid jet (22a, 22b) is ejected under pressure therefrom.
  • This achieves that bottom material possibly accumulated in the interior of suction head 6 is cut quickly and efficiently, whereby blockage of suction conduit 3 is substantially prevented, or in any case counteracted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (12)

  1. Saugkopf (6) für ein Baggerschiff (1), das den Saugkopf (6) in einer Bewegungsrichtung über einen Unterwasserboden bewegt, wobei der Saugkopf eine Konstruktion (7) aus Seitenwänden und einer Rückwand (8) aufweist, die im Wesentlichen quer zur Bewegungsrichtung des Saugkopfes (6) verläuft, wobei die Konstruktion mit einem Saugrohr (3) des Baggerschiffs (1) verbindbar und mit Schneidwerkzeugen (11) versehen ist, um in einen Unterwasserboden einzudringen, wobei der Saugkopf (6) weiterhin mindestens eine Düse (20) zum Abgeben eines Flüssigkeitsstrahls (22) unter Druck aufweist, dadurch gekennzeichnet, dass die mindestens eine Düse (20) um eine Drehachse drehbar ist, die nicht mit der Achse der Düse (20) oder des Flüssigkeitsstrahls (22) in einer ortsfesten Position der Düse (20) übereinstimmt, wobei die mindestens eine Düse in das Innere des Saugkopfes gerichtet ist, um einen Flüssigkeitsstrahl in das Innere abzugeben.
  2. Saugkopf nach Anspruch 1, wobei die Drehachse und die Achse der mindestens einen Düse (20) sich an einem Punkt überschneiden.
  3. Saugkopf nach Anspruch 1 und 2, wobei die Düsen eine Reihe bilden, wobei die Reihe der Düsen in einer geraden Linie quer zur Bewegungsrichtung des Saugkopfs angeordnet ist.
  4. Saugkopf nach einem der vorstehenden Ansprüche, wobei der Saugkopf zwischen zwei und zwanzig Düsen aufweist.
  5. Saugkopf nach einem der vorstehenden Ansprüche, wobei die Schneidwerkzeuge eine Reihe bilden, wobei die Reihe von Schneidwerkzeugen in einer geraden Linie quer zur Bewegungsrichtung des Saugkopfs angeordnet ist und wobei die Düsen sich über der Reihe von Schneidwerkzeugen befinden.
  6. Saugkopf nach einem der vorstehenden Ansprüche, wobei der Saugkopf eine Bodenplatte aufweist, die im Wesentlichen quer zur Bewegungsrichtung des Saugkopfes (6) verläuft und mit der der Saugkopf auf dem Unterwasserboden gestützt wird und wobei die mindestens eine Düse auf der Bodenplatte angebracht ist.
  7. Saugkopf nach einem der vorstehenden Ansprüche, wobei der Saugkopf mindestens eine Düse aufweist, die in Richtung des Unterwasserbodens ausgerichtet ist, um einen Flüssigkeitsstrahl in diesen Boden abzugeben.
  8. Baggereinheit, die ein Baggerschiff aufweist, das geeignet ist, um sich in einer Bewegungsrichtung zu bewegen, ein Saugkopf nach einem der Ansprüche 1 bis 7, der mit dem Baggerschiff verbunden ist, eine Baggerpumpe, die sich auf dem Baggerschiff befindet und eine Saugverbindung aufweist, ein Saugrohr, das den Saugkopf mit der Saugverbindung der Baggerpumpe verbindet, und ein Stützmittel, das sich zwischen dem Baggerschiff und dem Saugkopf zum Stützen des Saugrohrs befindet.
  9. Verfahren zum Baggern von Bodenmaterial unter Wasser mit einem Baggerschiff, das mit einem Saugkopf nach einem der Ansprüche 1 bis 7 ausgestattet ist, wobei der Saugkopf in einer Bewegungsrichtung so über einen Boden zum Baggern gezogen wird, dass im Wesentlichen nur die Schneidwerkzeuge den Boden berühren, und wobei die mindestens eine Düse in eine Drehbewegung versetzt wird und ein Flüssigkeitsstrahl unter Druck aus der Düse abgegeben wird.
  10. Verfahren nach Anspruch 9, wobei die Düsen eine Reihe bilden, wobei die Reihe von Düsen in einer geraden Linie quer zur Bewegungsrichtung des Saugkopfes angeordnet ist.
  11. Verfahren nach Anspruch 9 oder 10, wobei ein Flüssigkeitsstrahl aus der mindestens einen Düse abgegeben wird, bevor die Schneidwerkzeuge den Unterwasserboden berühren.
  12. Verfahren nach einem der Ansprüche 9 bis 11 zum Baggern eines Unterwasserbodens, der Ton, Lehm und/oder andere bindige Materialien aufweist.
EP13719602.8A 2012-01-16 2013-01-16 Saugkopf für eine baggerschiff und entsprechendes verfahren Not-in-force EP2804991B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2012/0035A BE1020372A5 (nl) 2012-01-16 2012-01-16 Zuigkop voor een baggerschip en werkwijze voor het baggeren met behulp van zuigkop.
PCT/IB2013/000490 WO2013108131A1 (en) 2012-01-16 2013-01-16 Suction head for a dredging vessel and the related method

Publications (2)

Publication Number Publication Date
EP2804991A1 EP2804991A1 (de) 2014-11-26
EP2804991B1 true EP2804991B1 (de) 2016-12-28

Family

ID=48227340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13719602.8A Not-in-force EP2804991B1 (de) 2012-01-16 2013-01-16 Saugkopf für eine baggerschiff und entsprechendes verfahren

Country Status (3)

Country Link
EP (1) EP2804991B1 (de)
BE (1) BE1020372A5 (de)
WO (1) WO2013108131A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795217A (en) * 1986-03-07 1989-01-03 Hydro-Ergon Corporation System for removing material with a high velocity jet of working fluid
DE4226492A1 (de) * 1991-12-24 1993-07-01 Muesing Anton Gmbh Co Kg Verfahren und vorrichtung zum vergroessern der wassertiefe eines gewaessers
DE4405451A1 (de) * 1994-02-21 1995-08-31 Krupp Foerdertechnik Gmbh Verfahren und Vorrichtung zum Absaugen von Gewässergrund
BE1011285A3 (nl) 1997-07-17 1999-07-06 Dredging Int Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop.
JP4431702B2 (ja) * 1999-09-28 2010-03-17 西鉄テクノサービス株式会社 水中掘削装置
JP2005048756A (ja) * 2003-07-28 2005-02-24 Eibun Amamiya 浚渫ポンプ
PT1653010E (pt) * 2004-10-26 2010-03-22 Oord N V Van Método para realizar uma operação de dragagem submarina e instalação de dragagem
JP2009034653A (ja) * 2007-08-03 2009-02-19 Kazuhisa Kuroda 流体噴射装置
BE1017861A3 (nl) * 2007-11-29 2009-09-01 Dredging Int Sleepkop van een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop.

Also Published As

Publication number Publication date
WO2013108131A9 (en) 2013-11-07
BE1020372A5 (nl) 2013-08-06
WO2013108131A1 (en) 2013-07-25
EP2804991A1 (de) 2014-11-26

Similar Documents

Publication Publication Date Title
EP1851386B1 (de) Schneidkopf zum ausbaggern von erde und verfahren zum ausbaggern mittels dieses schneidkopfs
US7395618B2 (en) Subsea excavation and suction device
EP2376715B1 (de) Saugkopf für einen geschleppten lageraumsaugbagger und verfahren zum baggern unter verwendung des saugkopfs
US9222238B2 (en) Drag head and trailing suction hopper dredger
EP2670921B1 (de) Saugkopf für ein baggerschiff und baggerverfahren mit diesem saugkopf
KR100808243B1 (ko) 준설 장치
EP2852710B1 (de) Saugkopf für ein baggerschiff und baggerverfahren mit diesem saugkopf
EP2855781B1 (de) Baggerkopf für einen hopperbagger und baggerverfahren mittels eines derartigen baggerkopfs
EP2804991B1 (de) Saugkopf für eine baggerschiff und entsprechendes verfahren
US9745715B2 (en) Dredge with water-jet cutterhead
BE1016085A5 (nl) Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop.
EP3259409B1 (de) Saugkopf für ein baggerschiff und verfahren zum baggern mit verwendung des besagten saugkopfs

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160719

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 857420

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602013015864

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170328

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170329

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161228

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 857420

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170428

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602013015864

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170328

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170428

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170801

26N No opposition filed

Effective date: 20170929

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20171117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170328

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228