EP0532490B1 - Dredger for removing mud without stirring up sludge and/or other sediments - Google Patents

Dredger for removing mud without stirring up sludge and/or other sediments Download PDF

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Publication number
EP0532490B1
EP0532490B1 EP19920870146 EP92870146A EP0532490B1 EP 0532490 B1 EP0532490 B1 EP 0532490B1 EP 19920870146 EP19920870146 EP 19920870146 EP 92870146 A EP92870146 A EP 92870146A EP 0532490 B1 EP0532490 B1 EP 0532490B1
Authority
EP
European Patent Office
Prior art keywords
dredger
funnel
sludge
sediments
stirring
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.)
Expired - Lifetime
Application number
EP19920870146
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0532490A1 (en
Inventor
Luc De Ryck
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.)
Dredging International NV
Original Assignee
Dredging International 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 Dredging International NV filed Critical Dredging International NV
Publication of EP0532490A1 publication Critical patent/EP0532490A1/en
Application granted granted Critical
Publication of EP0532490B1 publication Critical patent/EP0532490B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
    • E02F5/282—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with rotating cutting or digging tools
    • 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
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/081—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain mounted on floating substructures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/005—Equipment for conveying or separating excavated material conveying material from the underwater bottom

Definitions

  • the invention relates to a dredger equiped with at least one funnel which is adjustable under an arbitrary angle which contains a scraper belt for digging up sludge and other light sediments.
  • An object of the invention is therefore to design a dredger which provides a solution for the just sketched problems and which enables to remove the sludge and/or other sediments from watercourses without stirring this material up in the water and this, as already mentioned hereinabove, while adding a minimum amount of water during the vertical transport.
  • the scraper belt is extending up to the lowermost part of said funnel which lowermost part of the funnel ends in a scraper blade, so that sludge and other slight sediments can be transported along said funnel.
  • Figure 1 is a schematical side elevation view of a dredger according to the invention.
  • Figure 2 is a schematical top plan view of the dredger according to the invention.
  • Figure 3 is, on a larger scale, a schematical longitudinal section of the ladder together with the funnel and the scrape belt moving therein.
  • Figure 4 is a section according to line IV-IV of figure 3.
  • Figure 5 is a section according to line V-V of figure 3.
  • Figure 6 relates to a detail of the invention.
  • Figure 7 relates to a variant of the embodiment according to figure 6.
  • Figure 8 is, on a still larger scale, a cross-section through three funnels near the drive means of the ladders of the dredger according to the invention.
  • the dredger shown in these figures consists of a pontoon 1 comprising a funnel-shaped dump space 2.
  • the hold 3 is provided for mounting components which do not belong to the essence of the invention.
  • a set of, in this case and by way of example, three ladders 4 in such a manner that they can be adjusted between an angle of about 45° and the horizontal plane.
  • a funnel 5 wherein scraper belts 6 are rotatably mounted.
  • the scraper belts 6 carry transverse upright scrapers 7 (more details of these scrapers are shown in figures 3, 4 and 5).
  • the length and the size of the funnel are calculated in such a manner that it allows to dredge or scrape up to a sufficient depth and to transport the dredged mud within each funnel by each set of scraper belts and scrapers cooperating therewith.
  • each funnel 5 is delimited in the longitudinal direction by a top plate 8 and by a supporting plate comprising upright walls 9'. On the frontside, this is at the bottom of the funnel 5, where the sludge is dug up, the lowermost plate 9 ends in the shape of an either or not adjustable knife 9" which is an extension of the lowermost extremity of the lowermost plate 9.
  • funnels 5 When use is made, as in the described embodiment, of three funnels 5 disposed next to one another, they can preferably be mutually connected by crossbeams 10 which connect the longitudinal beams 11 of different ladders, locally to one another.
  • the scraper belts 6 are guided around gear wheels 12 at the upper and lower extremity of the longitudinal beams 11.
  • the dredger Since the dredger according to the invention should not be equipped with propellers because they would inevitably stir up the water in the small water courses and in the case that the use of anchor cables on winding drums is for example not flexible or desired, the dredger is moved forwards by means of one or more drive wheels 13.
  • These drive wheels 13 are equipped with radial pins or blades 14, the length of which may possibly be adjustable. In this way, they grip easily into the submerged bottom which is to be dug up and ensure the displacement of the dredger.
  • These wheels 13 can be driven preferably independent from one another so that they can rotate each separately in different directions and/or at different speeds.
  • an adjustable arm 15 mounted onto the stern of the dredger, which arm is provided on its free extremity with at least one drive wheel 16 which is preferably also provided with similar radial pins 17 or blades.
  • the drive wheels 13 at the bottom of the ladders 4 for the propulsion of the dredger it can therefore be moved forward by means of one or more drive wheels 16 on the lower extremity of the arm 15.
  • the ladders 4 can be adjusted under the desired angle, usually in function of the thickness and the level of the sludge layer or submerged bottom to be dug up, by making use of the structure which is shown in figures 6 and 7.
  • Figure 6 shows guiding profiles 18 which are bent downwards above the stam of the dredger and which are fixed on shores 19.
  • Preferably two of such guiding profiles and in particular the two middle most profiles carry a rack, indicated schematically by reference 20 in figure 6, the gear wheels 21 fixed on axles 22 cooperate with.
  • the axles 22 are driven by a motor 23 in one direction or the other in such a manner that the ladders can be disposed in positions which vary between the horizontal position, shown in mixed line in figure 1, and the position under an angle of about 45° as shown in full lines in the same figure 1 and further in figure 6.
  • the axles 22 driven by a motor are mounted in pieces 24 belonging to one of the transverse beams 10.
  • the outermost ladders are only provided with free running wheels 25 (figures 6 and 7).
  • a variant embodiment of the device for pulling up the ladders as shown in figures 6 and 7 is represented finally in figure 8.
  • the ladders 4 or at least the two outer ladders can be provided sideways with a U-shaped gutter profile 26, while two or more support plates 27 are mounted on the dredger which are each provided with a pivot 28. This pivot fits in the U-shaped gutter profile 26.
  • the ladders can be pulled up through a cable 29 upto a position which corresponds substantially to the horizontal plane.
  • the dredger In view of the very particular tasks for which the dredger according to the invention is designed, it is finally further provided with at least two but preferably four horizontally displacable arms 30 which serve as so-called "fenders” and which are provided hereto with wheels 31.
  • the arms 30 can be displaced hydraulically, mechanically through a rack or manually and can be brought in this way in a predetermined position in order to block the dredger in its correct position. Thanks to said arms 30 provided with wheels 31, the dredger can also be displaced laterally either between two banks or two embankments or between walls, when the watercourse flows through a built-up area, such as a city.
  • the dredger By operating the displacable arms 30, the dredger can also be positioned in its correct position on a minimum distance from a bank, an embankment or a wall.
  • the advantages of the dredger are very clear.
  • the dredger can be maintained in its correct position under very particular circumstances without requiring the use of anchors, howsers or piles. Due to the scraping in the closed funnel, very little mud arrives in the surrounding water so that the desired result, i.e. a reduced or nearly unexisting stirring up and no dilution of the mud with water, is obtained. Due to their concept, the scraper belts can be moved in their funnels in either one of both directions. Notwithstanding the limited dimensions of the dredger, it has a very large dredging or scraping capacity because the amount of transported water is insignificant compared to the displaced amounts of sludge and/or other sediments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Sludge (AREA)
EP19920870146 1991-09-11 1992-09-11 Dredger for removing mud without stirring up sludge and/or other sediments Expired - Lifetime EP0532490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100846A BE1005307A5 (nl) 1991-09-11 1991-09-11 Baggertuig voor het zonder opwoeling van slib en/of andere sedimenten verwijderen van baggerspecie.
BE9100846 1991-09-11

Publications (2)

Publication Number Publication Date
EP0532490A1 EP0532490A1 (en) 1993-03-17
EP0532490B1 true EP0532490B1 (en) 1997-03-12

Family

ID=3885699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920870146 Expired - Lifetime EP0532490B1 (en) 1991-09-11 1992-09-11 Dredger for removing mud without stirring up sludge and/or other sediments

Country Status (4)

Country Link
EP (1) EP0532490B1 (es)
BE (1) BE1005307A5 (es)
DE (1) DE69218083T2 (es)
ES (1) ES2099244T3 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9300482A (nl) * 1993-03-18 1994-10-17 Boer Holding Baggerbedrijf De Baggermolen met morsopvangmiddelen.
KR20010002989A (ko) * 1999-06-19 2001-01-15 김복중 하상 오니 수거장치
KR100775467B1 (ko) * 2001-09-27 2007-11-12 주식회사 포스코 석탄 수거차의 방향 전환장치
CN101942847B (zh) * 2009-07-10 2012-06-20 北京中矿环保科技股份有限公司 一种清挖输送机
CN102172440B (zh) * 2010-12-22 2013-12-18 深圳市中邦(集团)建设总承包有限公司 搅拌刮泥独立机
CN102191782B (zh) * 2011-03-28 2012-07-04 宝钢发展有限公司 一种冶炼废水综合池污泥清理专用工具
CN102606204A (zh) * 2012-03-31 2012-07-25 苏国安 矿用水仓清仓机
BE1020785A5 (nl) * 2012-07-06 2014-05-06 Baggerwerken Decloedt En Zoon Inrichting en werkwijze voor het baggeren van bodemmateriaal onder water.
US10519625B2 (en) 2013-10-09 2019-12-31 Heriberto Floridor QUIDIANTE DIAZ Dredger actuated from land
CN105887958B (zh) * 2016-04-14 2019-03-22 西安科技大学 煤矿井底水仓淤泥清理方法
CN110583562A (zh) * 2019-10-22 2019-12-20 东阳面世建筑工程有限公司 一种用于渔业水利工程的池塘底部清淤装置
CN111173065A (zh) * 2020-01-19 2020-05-19 岭南生态文旅股份有限公司 一种黑臭水体污泥挖掘收集设备
CN111519683B (zh) * 2020-04-28 2021-03-26 宁夏晟博建工有限公司 一种河道治理淤泥清理处理方法
CN113107041B (zh) * 2021-03-31 2023-06-16 湖北振兴港航工程有限公司 一种河道清淤装置
CN113550366B (zh) * 2021-07-26 2023-06-20 江西昌丰建筑工程有限公司 一种水利工程清淤装置
CN115949112B (zh) * 2023-02-16 2023-05-16 桐庐富春水利水电建筑有限公司 一种河道清淤辅助装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL97743C (es) *
DE33455C (de) * 1900-01-01 J. PARKER in Hull, Yorkshire, England Neuerung an Grabemaschinen
GB690275A (en) * 1948-11-23 1953-04-15 Scottish Seaweed Res Ass Improvements in or relating to apparatus for harvesting under-water seaweed
NL6907346A (es) * 1969-05-13 1970-11-17
NL144011B (nl) * 1971-04-15 1974-11-15 Konijn Machinebouw Nv Baggervaartuig dat een kraan draagt en over land verrijdbaar is.

Also Published As

Publication number Publication date
ES2099244T3 (es) 1997-05-16
BE1005307A5 (nl) 1993-06-22
EP0532490A1 (en) 1993-03-17
DE69218083T2 (de) 1997-08-14
DE69218083D1 (de) 1997-04-17

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