EP0255845A1 - Suction dredger - Google Patents

Suction dredger Download PDF

Info

Publication number
EP0255845A1
EP0255845A1 EP86111003A EP86111003A EP0255845A1 EP 0255845 A1 EP0255845 A1 EP 0255845A1 EP 86111003 A EP86111003 A EP 86111003A EP 86111003 A EP86111003 A EP 86111003A EP 0255845 A1 EP0255845 A1 EP 0255845A1
Authority
EP
European Patent Office
Prior art keywords
pontoon
excavator
anchor
pile
anchoring
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.)
Granted
Application number
EP86111003A
Other languages
German (de)
French (fr)
Other versions
EP0255845B1 (en
Inventor
Franz Kufner
Johann Fierlbeck
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.)
MAN DWE GmbH
Original Assignee
Deggendorfer Werft und Eisenbau GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8195329&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0255845(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Deggendorfer Werft und Eisenbau GmbH filed Critical Deggendorfer Werft und Eisenbau GmbH
Priority to DE8686111003T priority Critical patent/DE3676201D1/en
Priority to EP19860111003 priority patent/EP0255845B1/en
Publication of EP0255845A1 publication Critical patent/EP0255845A1/en
Application granted granted Critical
Publication of EP0255845B1 publication Critical patent/EP0255845B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/06—Floating substructures as supports
    • E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
    • 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
    • E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes

Definitions

  • the invention relates to a suction excavator according to the preamble of claim 1.
  • Such a suction excavator is known in the form that the anchoring means on both sides consist of regular anchors.
  • the disadvantage here is that these anchors must be relocated after each working cycle of the excavator, in which the available stroke of the pile car or stepping pile has been used up, which, particularly in view of the high holding forces required here, forms a relatively time-consuming work stoppage, and that in some, e.g. due to sedimentary reasons, anchors cannot be supported at all.
  • the invention is therefore based on the object of designing the anchoring means on both sides in such a way that they can be introduced and moved quickly and reliably even with a resilient reason.
  • the design of the anchoring means on both sides as vertical anchor piles similar to the anchoring pontoon of the excavator pontoon enables these anchor piles to be introduced quickly and selectively relatively deep into the ground.
  • the suction excavator shown has an excavator pontoon 2 with a suction pipe conductor 4 which is mounted therein in the longitudinal center thereof so as to be pivotable up and down.
  • the suction pipe conductor 4 carries in the usual way a suction pipe 10 which ends at its free end 6 and in this example ends inside a cutting head 8, in which a centrifugal pump 12 which is still arranged on the suction pipe conductor is provided. To convey its vertical pivoting movement, it is suspended from a lifting gear 14.
  • a pile wagon 20 which can be moved in the longitudinal direction of the excavator pontoon by means of a hydraulic cylinder 18 and in which an anchoring pile 22 for the excavator is mounted so that it can move up and down.
  • This anchoring pole is suspended from the piston rod 26 of a standing hydraulic cylinder 28 via a cable bottle 24.
  • a crosshead 30 is pivoted about the axis of the anchoring pile 22, on the ends of which project beyond the lateral side walls 32 of the excavator pontoon by means of universal joints 34 anchor trees 36 are supported.
  • the anchor booms 36 can be spread out by means of hydraulic cylinders 38 and, if necessary, can also be made up for again. They carry at their free ends, in this Example rigidly connected thereto, each an anchor pontoon 40, in which an anchor post 42 is mounted to move up and down. Similar to the anchoring post 22, this anchor post is suspended from the piston rod 46 of a hydraulic cylinder 48 by means of a cable bottle 44. It is understood that, although not shown here, the supply lines of the hydraulic cylinders 48 will run along the anchor trees 36 to the excavator pontoon 2.
  • a rope 50 engages which runs over a roller 52 at the free end 6 of the suction pipe conductor 4 to a winch 54 arranged on the excavator pontoon 2 .
  • alternating actuation of the two winches 54 can give the excavator pontoon 2 together with the suction pipe conductor 4 a reciprocating pivoting movement around the anchoring pile 22, in which the end 6 of the suction pipe conductor approaches one or the other of the two anchoring piles 42.
  • the pile wagon 20 is moved backwards by the hydraulic cylinder 18 relative to the excavator pontoon, ie the excavator pontoon is moved forward, the cutting head 8 thus always finds new food in the base 56.
  • the anchor booms 36 are folded up against the side walls 32 by means of the hydraulic cylinders 38 or the winches 54 when the anchor piles 42 are retracted (as is also the case in the figures) can be seen on the right-hand anchor tree), and finally the anchoring post 22 is also pulled in.
  • the excavator is now in a transportable condition.

Abstract

The dredger has a dredger pontoon (2), accommodating the drives, operating elements and the like, a suction tube guide (4), articulated to the said pontoon parallel to its longitudinal centre plane in such a way that it can be swung down, a stay pile (22), vertically mounted in a pile carriage (20), which is mounted longitudinally displaceably in the dredger pontoon, or else designed as a walking spud, and able to be lowered onto the ground, as well as anchoring means on both sides, which are connected by means of mechanically swivelling anchor beams (36) and retractable cables (50) to the dredger pontoon and the suction tube guide, respectively, and can be lowered onto the ground, in order to be able to impart on the dredger swivelling movements taking place about the stay pile. To simplify and shorten the relocating operation, as well as for secure fixing in the ground, in this arrangement the anchoring means on both sides comprise stay piles (42) which are in each case mounted vertically in their own anchoring pontoon (40), connected to the anchor beam (36) concerned, and can be lowered. <IMAGE>

Description

Die Erfindung betrifft einen Saugbagger gemäß Gattungsbe­griff des Anspruchs 1.The invention relates to a suction excavator according to the preamble of claim 1.

Ein derartiger Saugbagger ist in der Form bekannt, daß die beiderseitigen Ankermittel aus regelrechten Ankern bestehen. Nachteilig ist dabei, daß diese Anker nach jedem Arbeitszyklus des Baggers, bei dem der verfügbare Hub des Pfahlwagens bzw. Schreitpfahls aufgezehrt wurde, neu gelegt werden müssen, was, zumal im Hinblick auf die hier erfor­derlichen hohen Haltekräfte, eine verhältnismäßig zeit­raubende Arbeitsunterbrechung bildet, und daß in manchem, z.B. sedimentösem Grund Anker überhaupt keinen ausreichen­den Halt finden.Such a suction excavator is known in the form that the anchoring means on both sides consist of regular anchors. The disadvantage here is that these anchors must be relocated after each working cycle of the excavator, in which the available stroke of the pile car or stepping pile has been used up, which, particularly in view of the high holding forces required here, forms a relatively time-consuming work stoppage, and that in some, e.g. due to sedimentary reasons, anchors cannot be supported at all.

Von daher liegt der Erfindung die Aufgabe zugrunde, die beiderseitigen Ankermittel so zu gestalten, daß sie selbst bei nachgiebigem Grund rasch und zuverlässig eingebracht bzw. versetzt werden können.The invention is therefore based on the object of designing the anchoring means on both sides in such a way that they can be introduced and moved quickly and reliably even with a resilient reason.

Diese Aufgabe ist durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved by the characterizing features of claim 1.

Die Ausbildung der beiderseitigen Ankermittel als vertikale Ankerpfähle ähnlich dem Verankerungspfahl des Baggerpontons ermöglicht es, diese Ankerpfähle rasch und gezielt verhält­nismäßig tief in den Grund einzubringen.The design of the anchoring means on both sides as vertical anchor piles similar to the anchoring pontoon of the excavator pontoon enables these anchor piles to be introduced quickly and selectively relatively deep into the ground.

Die Unteransprüche geben darüber hinausgehend vorteilhafte Ausgestaltungsmöglichkeiten der Erfindung an.The subclaims also provide advantageous design options for the invention.

Nachfolgend wird ein entsprechendes Ausführungsbeispiel anhand der begleitenden Zeichnung genauer beschrieben. Dabei zeigt

  • Fig. 1 eine Draufsicht auf den betreffenden Saugbagger im Betrieb und
  • Fig. 2 eine Seitenansicht des gleichen Saugbaggers im Be­trieb.
Below is a corresponding embodiment described in more detail with reference to the accompanying drawing. It shows
  • Fig. 1 is a plan view of the suction excavator concerned in operation and
  • Fig. 2 is a side view of the same suction excavator in operation.

Der dargestellte Saugbagger weist einen Baggerponton 2 mit einer etwa in dessen Längsmitte darin auf- und ab­schwenkbar gelagerten Saugrohrleiter 4 auf. Die Saugrohr­leiter 4 trägt in üblicher Weise ein an ihrem freien Ende 6 endendes und in diesem Beispiel innerhalb eines Schneid­kopfes 8 mündendes Saugrohr 10, in dem eine noch auf der Saugrohrleiter angeordnete Kreiselpumpe 12 vorgesehen ist. Zur Vermittlung ihrer vertikalen Schwenkbewegung ist sie an einem Hebegeschirr 14 aufgehängt.The suction excavator shown has an excavator pontoon 2 with a suction pipe conductor 4 which is mounted therein in the longitudinal center thereof so as to be pivotable up and down. The suction pipe conductor 4 carries in the usual way a suction pipe 10 which ends at its free end 6 and in this example ends inside a cutting head 8, in which a centrifugal pump 12 which is still arranged on the suction pipe conductor is provided. To convey its vertical pivoting movement, it is suspended from a lifting gear 14.

Im rückwärtigen Abschnitt 16 des Baggerpontons 2 befindet sich ein mittels eines Hydraulikzylinders 18 in der Längs­richtung des Baggerpontons verfahrbarer Pfahlwagen 20, in dem ein Verankerungspfahl 22 für den Bagger auf- und abbeweglich gelagert ist. Dieser Verankerungspfahl ist über eine Seilflasche 24 an der Kolbenstange 26 eines stehenden Hydraulikzylinders 28 aufgehängt.In the rear section 16 of the excavator pontoon 2 there is a pile wagon 20 which can be moved in the longitudinal direction of the excavator pontoon by means of a hydraulic cylinder 18 and in which an anchoring pile 22 for the excavator is mounted so that it can move up and down. This anchoring pole is suspended from the piston rod 26 of a standing hydraulic cylinder 28 via a cable bottle 24.

Auf dem Pfahlwagen 20 ist, um die Achse des Verankerungs­pfahles 22 herum schwenkbar, ein Querhaupt 30 gelagert, an dessen über die seitlichen Bordwände 32 des Baggerpon­tons überstehenden Enden mittels Universalgelenken 34 Anker­bäume 36 gelagert sind. Die Ankerbäume 36 sind mittels Hydraulikzylindern 38 abspreizbar und ggf. auch wieder beiholbar. An ihren freien Enden tragen sie, in diesem Beispiel starr damit verbunden, je einen Ankerponton 40, in dem ein Ankerpfahl 42 auf- und abbeweglich gelagert ist. Dieser Ankerpfahl ist, ähnlich dem Verankerungspfahl 22, mittels einer Seilflasche 44 an der Kolbenstange 46 eines Hydraulikzylinders 48 aufgehängt. Es versteht sich, daß, obgleich hier nicht gezeigt, die Versorgungsleitungen der Hydraulikzylinder 48 entlang den Ankerbäumen 36 zu dem Baggerponton 2 verlaufen werden.On the pile wagon 20, a crosshead 30 is pivoted about the axis of the anchoring pile 22, on the ends of which project beyond the lateral side walls 32 of the excavator pontoon by means of universal joints 34 anchor trees 36 are supported. The anchor booms 36 can be spread out by means of hydraulic cylinders 38 and, if necessary, can also be made up for again. They carry at their free ends, in this Example rigidly connected thereto, each an anchor pontoon 40, in which an anchor post 42 is mounted to move up and down. Similar to the anchoring post 22, this anchor post is suspended from the piston rod 46 of a hydraulic cylinder 48 by means of a cable bottle 44. It is understood that, although not shown here, the supply lines of the hydraulic cylinders 48 will run along the anchor trees 36 to the excavator pontoon 2.

An jedem der beiden Ankerpfähle 42 greift, je nach zu erwar­tender Eindringtiefe etwa 2 - 3 m von seinem unteren Ende, ein Seil 50 an, das über eine Rolle 52 am freien Ende 6 der Saugrohrleiter 4 zu einer auf dem Baggerponton 2 ange­ordneten Winde 54 verläuft. In dem gezeigten Betriebszu­stand kann durch abwechselnde Betätigung der beiden Winden 54 dem Baggerponton 2 samt Saugrohrleiter 4 eine hin- und hergehende Schwenkbewegung um den Verankerungspfahl 22 herum vermittelt werden, bei der sich das Ende 6 der Saug­rohrleiter dem einen oder anderen der beiden Verankerungs­pfähle 42 nähert. Während zugleich der Pfahlwagen 20 durch den Hydraulikzylinder 18 relativ zu dem Baggerponton nach rückwärts verfahren, der Baggerponton also nach vorne be­wegt wird, findet der Schneidkopf 8 damit in dem Grund 56 stets neue Nahrung.At each of the two anchor piles 42, depending on the depth of penetration to be expected approximately 2-3 m from its lower end, a rope 50 engages which runs over a roller 52 at the free end 6 of the suction pipe conductor 4 to a winch 54 arranged on the excavator pontoon 2 . In the operating state shown, alternating actuation of the two winches 54 can give the excavator pontoon 2 together with the suction pipe conductor 4 a reciprocating pivoting movement around the anchoring pile 22, in which the end 6 of the suction pipe conductor approaches one or the other of the two anchoring piles 42. While at the same time the pile wagon 20 is moved backwards by the hydraulic cylinder 18 relative to the excavator pontoon, ie the excavator pontoon is moved forward, the cutting head 8 thus always finds new food in the base 56.

Ist der Hub des Zylinders 18 bzw. Pfahlwagens 20 aufge­zehrt, so wird ein unmittelbar in dem Baggerponton 2 auf- und abbeweglich gelagerter zusätzlicher Pfahl, 58, in den Grund abgesenkt, während die drei übrigen Pfähle, 22 und 42, eingezogen werden. Darauf kehrt der Pfahlwagen 20 re­lativ zu dem Baggerponton 2 in seine Ausgangsstellung zu­rück. Sodann werden die Pfähle 22 und 42 erneut abgesenkt, wobei sie sich durch ihr Eigengewicht und die Wucht der Absenkbewegung in den Grund hineinbohren, und schließlich wird der Pfahl 58 wieder eingezogen. Dieser ganze Umsetz­vorgang ist in verhältnismäßig kurzer Zeit zu bewältigen. Danach kann ein neuer Arbeitszyklus beginnen, in dessen Ablauf der Baggerponton 2 mit der Saugrohrleiter 4 wieder zwischen den Ankerpfählen 42 hin- und hergeführt und zu­gleich vermittels des Hydraulikzylinders 18 schrittweise nach vorne bewegt wird.If the stroke of the cylinder 18 or pile wagon 20 is consumed, an additional pile 58, which is mounted directly up and down in the excavator pontoon 2, is lowered into the ground, while the three remaining piles 22 and 42 are drawn in. The pile wagon 20 then returns to its starting position relative to the excavator pontoon 2. The piles 22 and 42 are then lowered again, drilling into the ground due to their own weight and the force of the lowering movement, and finally the pile 58 is retracted. This entire conversion process can be accomplished in a relatively short time. Thereafter, a new work cycle can begin, in the course of which the excavator pontoon 2 with the suction pipe 4 is again guided back and forth between the anchor piles 42 and at the same time is gradually moved forward by means of the hydraulic cylinder 18.

Ist die Arbeit abgeschlossen und soll der Bagger an einen anderen Ort verfahren werden, so werden die Ankerbäume 36 bei eingezogenen Ankerpfählen 42 mittels der Hydraulik­zylinder 38 oder auch der Winden 54 an die Bordwände 32 herangeklappt (wie dies i.ü. auch in den Figuren bei dem rechtsseitigen Ankerbaum zu sehen ist), und zuletzt wird auch der Verankerungspfahl 22 eingezogen. Damit ist der Bagger in transportfähigem Zustand.When the work is complete and the excavator is to be moved to another location, the anchor booms 36 are folded up against the side walls 32 by means of the hydraulic cylinders 38 or the winches 54 when the anchor piles 42 are retracted (as is also the case in the figures) can be seen on the right-hand anchor tree), and finally the anchoring post 22 is also pulled in. The excavator is now in a transportable condition.

Zur Ausbildung der vorausgehend angesprochenen Teile im einzelnen wird hiermit ausdrücklich auf die Darstellung in den Zeichnungen verwiesen.For the formation of the above-mentioned parts in detail, reference is hereby expressly made to the illustration in the drawings.

Es versteht sich, daß an die Stelle des vorausgehend be­schriebenen, in dem Pfahlwagen 20 gelagerten Verankerungs­pfahles 22 auch ein entsprechender Schreitpfahl treten kann, wie dann auch die Ankerpfähle 42 als Schreitpfähle ausgebildet sein können.It goes without saying that, instead of the previously described anchoring pile 22 stored in the pile car 20, a corresponding tread pile can also take place, just as the anchor piles 42 can then be designed as tread piles.

Claims (5)

1. Saugbagger mit einem die Antriebe, Bedienungsmittel und dergl. aufnehmenden Baggerponton (2), einer parallel zu dessen Längsmittelebene herabschwenkbar daran angelenkten Saugrohrleiter (4), einem in einem längsverschiebbar in dem Baggerponton gelagerten Pfahlwagen (20) vertikal gelagerten oder als Schreitpfahl ausgebildeten, auf den Grund (56) absenkbaren Verankerungspfahl (22) und beiderseitigen über mechanisch schwenkbare Ankerbäume und einziehbare Seile (50) mit dem Baggerponton bzw. der Saugrohrleiter verbun­denen, auf den Grund absenkbaren Ankermitteln, um dem Bag­ger um den Verankerungspfahl erfolgende Schwenkbewegungen erteilen zu können, dadurch gekennzeichnet, daß die beiderseitigen Ankermittel aus in jeweils einem eigenen, mit dem betreffenden Ankerbaum (36) verbundenen Ankerponton vertikal gelagerten, absenkbaren Ankerpfählen (42) bestehen.1. suction dredger with an excavator pontoon (2) receiving the drives, operating means and the like, a suction pipe conductor (4) articulated to it parallel to its longitudinal center plane, a piling car (20) mounted vertically in a longitudinally displaceable manner in the excavator pontoon or designed as a stepping pile, anchoring post (22) that can be lowered to the bottom (56) and anchoring means that can be lowered to the bottom via mechanically pivoting anchor booms and retractable ropes (50) connected to the excavator pontoon or the suction pipe ladder in order to be able to impart swivel movements to the excavator around the anchoring post, characterized in that the anchoring means on both sides consist of lowerable anchor piles (42) vertically mounted in their own anchor pontoon connected to the anchor tree (36) in question. 2. Saugbagger nach Anspruch 1, dadurch gekenn­zeichnet, daß die Ankerbäume (36) in dessen der Saugrohrleiter (4) abgewandten, rückwärtigen Abschnitt (16) mit dem Baggerponton (2) verbunden sind.2. Suction dredger according to claim 1, characterized in that the anchor trees (36) in which the suction pipe (4) facing away, rear portion (16) are connected to the excavator pontoon (2). 3. Saugbagger nach Anspruch 2 bei Lagerung des Veranke­rungspfahles (22) in einem Pfahlwagen (20), dadurch ge­kennzeichnet, daß die Ankerbäume (36) an die vorzugsweise über die seitlichen Bordwände (32) des Bagger­pontons (2) überstehenden Enden eines um die Achse des Verankerungspfahles (22) schwenkbar auf dem Pfahlwagen (20) gelagerten Querhaupts (30) angelenkt sind.3. Suction dredger according to claim 2 when storing the anchoring pile (22) in a pile car (20), characterized in that the anchor trees (36) on the preferably over the side walls (32) of the excavator pontoon (2) projecting ends of one around the axis of the anchoring pile (22) are pivotally articulated on the pile carriage (20) mounted crosshead (30). 4. Saugbagger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ankerbäume (36) mittels Hydraulikzylindern (38) ausschwenkbar und über die die Ankerpfähle (42) mit der Saugrohrleiter verbinden­den Seile (50) ggf. in Verbindung mit den gleichen Hydrau­likzylindern, beiholbar sind.4. Suction excavator according to one of the preceding claims, characterized in that the anchor booms (36) can be swung out by means of hydraulic cylinders (38) and can be obtained via the cables (50) connecting the anchor posts (42) to the suction pipe ladder, if necessary in conjunction with the same hydraulic cylinders are. 5. Saugbagger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zur Verankerung des Baggers im eingezogenen Zustand der drei übrigen Pfähle (22, 42) mindestens ein zusätzlicher Pfahl (58) in dem Baggerponton (2) selbst vertikal und auf den Grund (56) absenkbar gelagert ist.5. Suction excavator according to one of the preceding claims, characterized in that for anchoring the excavator in the retracted state of the three remaining piles (22, 42) at least one additional pile (58) in the excavator pontoon (2) itself vertically and on the ground (56 ) is lowered.
EP19860111003 1986-08-08 1986-08-08 Suction dredger Expired - Lifetime EP0255845B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8686111003T DE3676201D1 (en) 1986-08-08 1986-08-08 SUCTION EXCAVATOR.
EP19860111003 EP0255845B1 (en) 1986-08-08 1986-08-08 Suction dredger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19860111003 EP0255845B1 (en) 1986-08-08 1986-08-08 Suction dredger

Publications (2)

Publication Number Publication Date
EP0255845A1 true EP0255845A1 (en) 1988-02-17
EP0255845B1 EP0255845B1 (en) 1990-12-12

Family

ID=8195329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860111003 Expired - Lifetime EP0255845B1 (en) 1986-08-08 1986-08-08 Suction dredger

Country Status (2)

Country Link
EP (1) EP0255845B1 (en)
DE (1) DE3676201D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1016375A5 (en) * 2005-06-06 2006-09-05 Dredging Int Spud for cutter suction dredger ship, has tensioned wires extending between ship and stud pole for absorbing forces from stud carriage
NL2011489C2 (en) * 2013-09-23 2015-03-24 Schrieck Dredging Technology B V V D CUTTER CLEANER WITH STABILIZED CUTTING HEAD.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109730A (en) * 1937-06-30 1938-03-01 Letourneau Inc Dredger
FR1236573A (en) * 1959-06-09 1960-07-22 Improvements made to dredgers
DE1759302A1 (en) * 1968-04-19 1971-06-03 Juergen Mix Floating dredgers (wet dredgers) with feed and swiveling option through a pile anchor system with a bridge
FR2250861A1 (en) * 1973-11-09 1975-06-06 Smith Leward
US3902448A (en) * 1973-10-25 1975-09-02 Carl E Davis Dredge having improved propelling means
US4177585A (en) * 1978-02-08 1979-12-11 Ballast-Nedam Groep N.V., Amsterdamse Ballast Bagger en Grond (Amsterdam Ballast Dredging) B.V. Method and apparatus for dredging
FR2553128A1 (en) * 1983-10-07 1985-04-12 Briand Ets Improvements to dredging barges

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109730A (en) * 1937-06-30 1938-03-01 Letourneau Inc Dredger
FR1236573A (en) * 1959-06-09 1960-07-22 Improvements made to dredgers
DE1759302A1 (en) * 1968-04-19 1971-06-03 Juergen Mix Floating dredgers (wet dredgers) with feed and swiveling option through a pile anchor system with a bridge
US3902448A (en) * 1973-10-25 1975-09-02 Carl E Davis Dredge having improved propelling means
FR2250861A1 (en) * 1973-11-09 1975-06-06 Smith Leward
US4177585A (en) * 1978-02-08 1979-12-11 Ballast-Nedam Groep N.V., Amsterdamse Ballast Bagger en Grond (Amsterdam Ballast Dredging) B.V. Method and apparatus for dredging
FR2553128A1 (en) * 1983-10-07 1985-04-12 Briand Ets Improvements to dredging barges

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1016375A5 (en) * 2005-06-06 2006-09-05 Dredging Int Spud for cutter suction dredger ship, has tensioned wires extending between ship and stud pole for absorbing forces from stud carriage
WO2006130934A2 (en) * 2005-06-06 2006-12-14 Dredging International N.V. Apparatus with flexibly mounted spud carriage
WO2006130934A3 (en) * 2005-06-06 2007-02-08 Dredging Int Apparatus with flexibly mounted spud carriage
EP2233645A3 (en) * 2005-06-06 2010-11-10 Dredging International N.V. Apparatus with flexibly mounted spud carriage
NL2011489C2 (en) * 2013-09-23 2015-03-24 Schrieck Dredging Technology B V V D CUTTER CLEANER WITH STABILIZED CUTTING HEAD.

Also Published As

Publication number Publication date
DE3676201D1 (en) 1991-01-24
EP0255845B1 (en) 1990-12-12

Similar Documents

Publication Publication Date Title
DE2448336C3 (en) Rig with a horizontally arranged, transportable platform
DE1531160C3 (en) crane
DE1258888B (en) Method for the production of multi-span bridges od. Like. And device for this
DE2406590A1 (en) CRANE, IN PARTICULAR TRUCK CRANE WITH A TELESCOPIC BOOM AND A TOP BOOM AND METHOD FOR FIXING THE TOP BOOM TO THE TELESCOPIC BOOM
DE3128399C2 (en)
DE1928421A1 (en) Method and device for underwater leveling
DE2641027A1 (en) CRANE FOR LOADING HANDLING GOODS OF UNIFORM DIMENSIONS
DE2813751C2 (en) Remote-controlled, self-propelled device for the extraction of solid minerals on the sea floor
DE2306722A1 (en) CRANE, ESPECIALLY SHIP UNLOADING CRANE, AND PROCEDURE FOR ASSEMBLING THE CRANE
DE2622991A1 (en) METHOD AND DEVICE FOR DRIVING UNDERWATER POLES
DE2938448A1 (en) Water bed excavating appliance - has digger on column base boom with top bearing permitting float movement of buoyant unit
EP0255845A1 (en) Suction dredger
DE3445062C2 (en)
DE2258807A1 (en) TELESCOPIC BOOM, PREFERABLY A CAR OR MOBILE CRANE
DD250729A5 (en) DEVICE FOR DRIVING FOUNDATION ELEMENTS IN EARTHHOES
DE2328207C3 (en) Road driving machine for underground mining
DE3626785A1 (en) Withdrawal unit for support shields in underground operation
DE1811421A1 (en) Method for laying cables and pipes in the body of the roadway
DE2945625A1 (en) METHOD FOR TOWING LARGE FLOATING MASSES, ESPECIALLY AT SEA
DE3525595C2 (en) Device for sinking shafts, in particular blind shafts and freezing shafts, from solid
DE819392C (en) Loading device, especially for underground drifting
DE3407054A1 (en) Collapsible feed drill
DE2137869C3 (en) Float ram
DE4445165A1 (en) Method of erecting electric grid pylons esp. for HV overhead power lines
DE3145270C2 (en) Device used as an expansion aid for tunneling in mining and tunneling

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19880812

17Q First examination report despatched

Effective date: 19890621

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3676201

Country of ref document: DE

Date of ref document: 19910124

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910726

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910831

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910902

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910904

Year of fee payment: 6

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19911025

Year of fee payment: 6

26 Opposition filed

Opponent name: O & K ORENSTEIN & KOPPEL AKTIENGESELLSCHAFT

Effective date: 19910911

NLR1 Nl: opposition has been filed with the epo

Opponent name: O & K ORENSTEIN & KOPPEL AG

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19920413

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
NLR2 Nl: decision of opposition
BERE Be: lapsed

Owner name: DEGGENDORFER WERFT UND EISENBAU G.M.B.H.

Effective date: 19920831