EP1857598A1 - Saugbagger mit verbesserter Saugleitungsstruktur - Google Patents

Saugbagger mit verbesserter Saugleitungsstruktur Download PDF

Info

Publication number
EP1857598A1
EP1857598A1 EP06114238A EP06114238A EP1857598A1 EP 1857598 A1 EP1857598 A1 EP 1857598A1 EP 06114238 A EP06114238 A EP 06114238A EP 06114238 A EP06114238 A EP 06114238A EP 1857598 A1 EP1857598 A1 EP 1857598A1
Authority
EP
European Patent Office
Prior art keywords
frame
tube
pivot
suction dredger
suction
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.)
Withdrawn
Application number
EP06114238A
Other languages
English (en)
French (fr)
Inventor
Willem Groen
Eric Henricus Nicolaas Hooijschuur
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.)
IHC Holland lE BV
Original Assignee
IHC Holland lE BV
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 IHC Holland lE BV filed Critical IHC Holland lE BV
Priority to EP06114238A priority Critical patent/EP1857598A1/de
Publication of EP1857598A1 publication Critical patent/EP1857598A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • E02F3/8833—Floating installations
    • E02F3/8841—Floating installations wherein at least a part of the soil-shifting equipment is mounted on a ladder or boom
    • 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
    • E02F3/8833—Floating installations
    • E02F3/885—Floating installations self propelled, e.g. ship
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/02—Conveying equipment mounted on a dredger
    • E02F7/023—Conveying equipment mounted on a dredger mounted on a floating dredger
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/10—Pipelines for conveying excavated materials

Definitions

  • the invention is related to a suction dredger, comprising a dredging tube which at one end carries a suction head and which at the other end is connected to the suction dredger hull through a hull pivot with her pivot axis which extends transverse with respect to said hull, said dredging tube comprising a tube and a frame which carries an upper tube part of the tube and which is connected to the hull pivot through a first frame pivot the pivot axis of which is transversely oriented with respect to the hull pivot axis of the hull pivot, a lower tube part of the tube being connected to the frame through a second frame pivot which is opposite the first frame pivot and the pivot axis of which is transversely oriented with respect to the first frame pivot axis, a motor driven suction pump being provided for transporting dredged material through the tube, said frame having a cross-sectional contour defined by a heigth dimension and a transverse dimension.
  • the upper tube part is at some distance away from the neutral line of the frame, said upper tube part is subjected to tensile or compression forces, depending on the flexing direction of the frame.
  • tensile or compression forces can lead to overloadings.
  • the upper tube part is completely filled with a relatively stiff column consisting of water and dredged material. Under those conditions, any loading which tends to change the length of the upper tube part, would lead to an acceleration or deceleration of the moving mass of water and dredged material.
  • the upper tube part with its contents then behaves as a very stiff component, which would lead to appreciable load increases.
  • the mountings by means of which the upper tube part is mounted onto the frame are heavily loaded as well which in the end can lead to rupture.
  • the object of the invention is to provide a suction dredger of the type described before, which is less vulnerable with respect to overloading of the frame and upper tube part. Said object is achieved in that the upper tube part over at least portion of its length is positioned fully within the cross-sectional contour of the frame.
  • the above addressed problems are solved completely or at least to a large extent.
  • the tube part in question is now positioned closely to or at the position of the neutral line of the frame, which means that said tube part will only be subjected to flexing loadings, and not to tensile or compression loadings.
  • the structure of the dredging tube is less prone to failure; the internal loads can remain limited. Stress concentrations at the mountings between the upper tube part and the frame are prevented.
  • a further important advantage of the dredging tube according to the invention is the relatively low weight thereof.
  • a low weight of the dredging tube in turn also influences in a positive way the construction of the cranes and cables, by means of which the dredging tube is positioned outside the vessel hull.
  • the construction of those elements can be lighter as well, leading to a further load and cost saving.
  • the upper tube part and the lower tube part are expendable components which from time to time have to be replaced.
  • the inner wall of the tube wears down which means that after a certain service time, the tube has reached its maximum useful life.
  • the upper tube part may comprise interconnected tube sections, and the frame may comprise at least one access opening the length of which is larger than the length of at least one of the tube sections so as to allow insertion or extraction of such tube section into respectively out of the frame.
  • the frame of the dredging tube according to the invention can be carried out in several ways.
  • the frame can be assembled from plates provided with openings, which open plates are welded together. This means that such frame would not comprise closed chambers, which makes the process of welding the frame less complicated.
  • the prior art frame described before consist of a multitude of closed chambers, which are indeed difficult to manufacture.
  • such chambers should be designed with sufficient resistance to withstand the external overpressure which is developed when submerging the frame.
  • such closed chambers provided a frame with a buoyant force, which may hamper the proper operation of the dredging tube. All these conditions make the prior art frames with closed chambers expensive.
  • the frame comprises at least three longitudinal frame elements which are interconnected through truss members.
  • a spatial truss-like structure on the one hand provides a strong and stiff support for the tube, while on the other hand the upper tube part can be fully accommodated within the internal open space of such structure. It is important to note that similar spatial truss-like structures can be obtained in many different ways, at relatively low cost due to their relatively simple production process.
  • the spatial truss-like structure comprises four longitudinal frame elements which define a cross-sectional contour.
  • This contour may have any suitable shape, such as a rectangular or square shape. Other shapes, e.g. a parallellogram shape, are possible as well...
  • the respective neighbouring pairs of longitudinal frame elements are interconnected through truss members. With the aim of removing or replacing tube sections, at least one of the longitudinal sides of the frame has a side section where truss members are lacking for providing the access opening.
  • the spatial truss-like structure can be carried out in several ways, but preferably the lower and transversal sides of the frame are provided with slantingly oriented truss members.
  • the remaining side which usually is the top side of the frame, is preferably provided with transversely oriented truss members, the access opening being defined between two of said transversely oriented truss members.
  • a proper of support of the upper tube part can be obtained by providing a first bulkhead near the first frame pivot, the upper tube part emanating through said first bulkhead.
  • a second bulkhead can be provided near the second frame pivot, the upper tube part emanating through said second bulkhead as well.
  • the suction pump and the drive train are accommodated in the frame.
  • the cross-sectional dimensions of the frame at or near the location of the suction pump and the drive train can be larger than the cross-sectional dimensions of the frame at a distance from said location.
  • a pressure line can be provided for feeding a pressurised fluid towards the suction head, said pressure line being supported by the frame.
  • the frame comprises at least one pipe shaped longitudinal frame element, said pipe shaped frame element forming part of the pressure line.
  • the pressure line which now forms part of the frame structure itself, despite the fact that it is not near the neutral line of the frame, is not adversely affected by any flexing or our correctional movement of the frame, having regard to the fact that the longitudinal frame elements in question are designed to carry such loads.
  • the invention is also related to a dredging tube for a suction dredger as described before, said dredging tube comprising a tube and a frame which carries an upper tube part of the tube, a first frame pivot having a first frame pivot axis, a lower tube part of the tube being connected to the frame through a second frame pivot which is opposite the first frame pivot and the pivot axis of which is transversely oriented with respect to the first frame pivot axis, a motor driven suction pump being provided for transporting dredged material through the tube, said frame having a cross-sectional contour defined by a height dimension and a transverse dimension.
  • the upper tube part over at least part of its length, is positioned fully within the cross-sectional contour of the frame.
  • the invention is also related to a frame for a dredging tube addressed before, said frame comprising a spatial truss-like structure provided with a first frame pivot having a first frame pivot axis and an opposite second frame pivot having a second frame pivot axis which is transversely oriented with respect to the first frame pivot axis, said spatial truss-like structure comprising at least one access opening the length of which is larger than the length of all the other openings in said structure.
  • the dredging tube 3 also carries a pressure line 35.
  • said pressure line 35 is to a large extent formed by one of the lower longitudinal frame elements 18.
  • the upperside 20 of the frame 8 has a relatively large opening 40, defined between two transversely oriented truss members 25.
  • the length of this opening 40 is somewhat larger than the length of the largest upper tube part section 28.
  • the frame 8 comprises a prismatic part 39 of a constant cross-section and contour, and also a widened part 41 for accommodating the motor and pump unit 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP06114238A 2006-05-19 2006-05-19 Saugbagger mit verbesserter Saugleitungsstruktur Withdrawn EP1857598A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06114238A EP1857598A1 (de) 2006-05-19 2006-05-19 Saugbagger mit verbesserter Saugleitungsstruktur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06114238A EP1857598A1 (de) 2006-05-19 2006-05-19 Saugbagger mit verbesserter Saugleitungsstruktur

Publications (1)

Publication Number Publication Date
EP1857598A1 true EP1857598A1 (de) 2007-11-21

Family

ID=37102421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114238A Withdrawn EP1857598A1 (de) 2006-05-19 2006-05-19 Saugbagger mit verbesserter Saugleitungsstruktur

Country Status (1)

Country Link
EP (1) EP1857598A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012158028A1 (en) 2011-05-13 2012-11-22 Ihc Holland Ie B.V. Dredger provided with a remotely operable dredging vehicle, and method for dredging using such a dredger system
CN103587955A (zh) * 2013-11-22 2014-02-19 裘尧云 深水采矿环形管道提升输送装置
CN109469139A (zh) * 2018-11-08 2019-03-15 马鞍山沐及信息科技有限公司 一种清淤船

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB657289A (en) * 1949-01-27 1951-09-12 Chantiers De Bretagne Anciens Improvements in suction-tubes for suction dredges of the centre-sump type
NL7903974A (nl) * 1979-05-21 1980-11-25 Hollands Aannemersbedrijf Zane Demonteerbaar baggervaartuig.
US4295286A (en) * 1980-04-08 1981-10-20 Ihc Holland N.V. Support frame for motor, pump and suction tube of a suction dredger
NL8502544A (nl) * 1985-09-17 1987-04-16 Stevin Volker Dredging Sleepcutterzuiger.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB657289A (en) * 1949-01-27 1951-09-12 Chantiers De Bretagne Anciens Improvements in suction-tubes for suction dredges of the centre-sump type
NL7903974A (nl) * 1979-05-21 1980-11-25 Hollands Aannemersbedrijf Zane Demonteerbaar baggervaartuig.
US4295286A (en) * 1980-04-08 1981-10-20 Ihc Holland N.V. Support frame for motor, pump and suction tube of a suction dredger
NL8502544A (nl) * 1985-09-17 1987-04-16 Stevin Volker Dredging Sleepcutterzuiger.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012158028A1 (en) 2011-05-13 2012-11-22 Ihc Holland Ie B.V. Dredger provided with a remotely operable dredging vehicle, and method for dredging using such a dredger system
CN103587955A (zh) * 2013-11-22 2014-02-19 裘尧云 深水采矿环形管道提升输送装置
CN109469139A (zh) * 2018-11-08 2019-03-15 马鞍山沐及信息科技有限公司 一种清淤船

Similar Documents

Publication Publication Date Title
CN111587305A (zh) 分段式吸力桶
US4660491A (en) Double hull ship without reinforcing transverse members between the inner and outer hull platings
EP1857598A1 (de) Saugbagger mit verbesserter Saugleitungsstruktur
US4674430A (en) Ship without transverse reinforcing members between the inner and outer hull plating
CA1197385A (en) Buoyancy-supported struts for ocean platforms
CN112722178A (zh) 一种减摇型uhpc管-箱体组合漂浮结构及其建造方法
FI79269C (fi) Fartyg utan tvaerbalk.
KR890003113Y1 (ko) 선체구조
US4688669A (en) Elevator bucket for high speed operation
JP3426916B2 (ja) コンクリート構造物
EP3294459B1 (de) Flotationsanlage und dessen verwendungen, verfahren zur änderung eines flotationstanks in einem tankmodul und verfahren zur änderung eines moduls
KR930001086Y1 (ko) 선체구조
EP1072505A1 (de) Schiff mit trogförmiger Versteifung
JP6813424B2 (ja) 船体構造及び船舶
GB2037929A (en) Joint for a truss
FR2719545A1 (fr) Double coque allégée pour navire et sa méthode économique de fabrication.
US6202586B1 (en) Anchor
EP4331966A1 (de) Vertäuungsboje
JP2624454B2 (ja) 没水体装備船舶の連結体先端部構造
CN221278712U (en) Counter weight buttress for salt pan shore base
CN215904679U (zh) 一种水域抢险平台艏艉箱结构
CN115613628A (zh) 沉放驳及沉管浮运方法
JPS6175091A (ja) 可変容量はしけ及びはしけ容量を増大する方法
KR101757276B1 (ko) 유조선의 화물창 구조
EP3862259A1 (de) Schwimmendes trockendock

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080522