EP0259472B1 - Drague - Google Patents

Drague Download PDF

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Publication number
EP0259472B1
EP0259472B1 EP19870902092 EP87902092A EP0259472B1 EP 0259472 B1 EP0259472 B1 EP 0259472B1 EP 19870902092 EP19870902092 EP 19870902092 EP 87902092 A EP87902092 A EP 87902092A EP 0259472 B1 EP0259472 B1 EP 0259472B1
Authority
EP
European Patent Office
Prior art keywords
scoop
pump
boom arrangement
suction
arrangement
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
Application number
EP19870902092
Other languages
German (de)
English (en)
Other versions
EP0259472A1 (fr
Inventor
Martti Kuusisto
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.)
Lannen Konepaja Oy
Original Assignee
Lannen Konepaja Oy
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 Lannen Konepaja Oy filed Critical Lannen Konepaja Oy
Publication of EP0259472A1 publication Critical patent/EP0259472A1/fr
Application granted granted Critical
Publication of EP0259472B1 publication Critical patent/EP0259472B1/fr
Expired legal-status Critical Current

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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
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • 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
    • 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

Definitions

  • the invention relates to a suction dredger apparatus in which the dredger pump is located in a movable boom mounted on a base.
  • a dredger apparatus of today normally includes a floating base, and a rotating chopper is fastened at the end of a folding boom mounted on the base.
  • the axis of the chopper is essentially vertical.
  • a suction pump is located on the base, and the suction end of its suction pipe is located in the vicinity of the chopper. The material loosened by the chopper is sucked up by the pump, and it is led for instance to a barge or on land.
  • One problem in this kind of apparatus is the fact that besides the material to be dredged, a considerable volume of water has to be transferred which impairs the efficiency of the apparatus and makes the separation of solid material more difficult.
  • Patent publication FI -B- 53 477 discloses also an apparatus in which the chopper is a screw rotating around a horizontal axis and in which a shieldlike plate is placed on the screw in order to lead the loosened material to the mouth of the suction pipe.
  • this apparatus is very complicated and expensive but rather limited in its function.
  • Patent publication US-A- 3 774 323 again discloses dredger apparatus having a base, a movable boom, a pump mounted at the end of the said boom and connected to a discharge pump arrangement and a scoop.
  • the scoop has a lip, sides and a rear plate bent forward at its upper end.
  • the suction pump is rigidly fastened to the end of a boom which moves only in vertical direction, such that the suction direction is always parallel to the boom.
  • the driving engine of the pump is located in the vessel. The efficiency of this apparatus is poor and the apparatus is awkward to use and lacks versatility such that when dredging, the vessel has to be moved forward almost continuously. Even in this way, only a very narrow groove can be dredged.
  • a suction dredger apparatus including a base; a base anchoring equipment, an hydraulic boom arrangement turnable about a vertical axis and mounted on the base; a vertically pivoting scoop fastened to the boom arrangement and having a lip plate, side plates and a rear plate bent forward at its upper part; and a suction device having a discharge pipe arrangement and a dredger pump being a centrifugal pump connected to the discharge pipe arrangement, characterised in that the dredger pump is fixedly mounted on the rear plate of the scoop to be simultaneously rotatable with the scoop relative to the boom arrangement in such a way that the suction opening of the pump is inside the scoop and the suction direction is always changed with any movement of the scoop relative to the boom arrangement; the pump inlet passage in the scoop being convergent towards the pump by means of guide plates and the scoop being provided with water-tight air containers.
  • the dredger pump is located in a scoop movably mounted at the end of a boom arrangement, the suction opening being inside the scoop. In this way, the suction direction of the pump is always changed with any movement of the scoop, relative to the boom arrangement, and unnecessary pumping of water can be avoided.
  • the boom arrangement is preferably a folding boom arrangement so that a fairly long area can be dredged from one anchoring site forward.
  • the boom arrangement is preferably still laterally movable, a fairly wide sectorlike area can be dredged from one anchoring site.
  • the driving motor of the pump is preferably a hydraulic motor which is located with the pump in the scoop.
  • the apparatus now invented can reach good efficiency but still the apparatus is very simple.
  • the apparatus is also flexible in use; it can easily be modified according to different dredging tasks, and also other tools can be connected to it.
  • Fig. 1 shows a side view of a dredger vessel
  • Figs. 2 and 3 show a front view and top view of the scoop of the apparatus
  • Figs. 6 and 7 show the scoop of Figs. 4 and 5 modified into a hoe scoop
  • Fig. 8 shows a dredger excavator.
  • the main parts of the apparatus of Fig. 1 are a floating base 1, a hydraulic boom arrangement 2 mounted on it, a vertically pivoting scoop 3 placed at the end of the hydraulic boom arrangement, and a suction device 4 connected to the scoop.
  • a motor as a power source and necessary controlling and steering devices have been placed in the vessel.
  • the base has a turnable propeller, by means of which it can be moved and steered.
  • the anchoring poles 5 At the other end (rear end) of the vessel, on the sides of the vessel, there are two anchoring poles 5 to be thrusted into the bottom.
  • the anchoring poles can be placed lying on the deck.
  • the support legs are mounted to the barge pivoting vertically. When lowered to the bottom, the support legs give sufficient support to the functioning of the apparatus.
  • Containers increasing the buoyancy can be arranged in the support legs so that it is easier to lift the legs from the bottom mud.
  • the anchoring poles 5 and the support legs 6 are hydraulically driven, and together they form anchoring equipment.
  • the anchoring poles 5 and the support legs 6 together with the excavating device can also be used for moving the vessel.
  • the vessel On land, the vessel lifts itself up on the support legs so that a transport base can be driven directly under the vessel or away from under the vessel. From the loading site, the vessel moves into water and away from water utilizing its support legs and the excavating device.
  • the boom arrangement is folding, and it can be moved both vertically and laterally. In order to move the boom arrangement as far downwards as possible, the front edge 7 of the vessel is made slanting downwards.
  • the scoop is fastened at the end of the boom arrangement by means of fast couplings 8.
  • Two centrifugal pumps 9 are mounted on the scoop, horizontally side by side in such a way that the suction openings of the pumps are located inside the scoop.
  • the outlet openings of the pumps are connected to a discharge pipe 10.
  • Fig. 2 shows a front view of the scoop and suction device of Fig. 1
  • Fig. 3 shows a top view.
  • the scoop is formed by a rear plate 11, a lip plate 12 and two side plates 13.
  • the rear plate and lip plate form a sharp angle inside the scoop.
  • the upper edge 14 of the rear plate is bent forward.
  • the upper part of the scoop is provided with fastening lugs 15 for fastening the scoop to the boom arrangement.
  • Pumps 9 driven by hydraulic motors 16 are placed in the rear plate of the scoop so that the suction openings are directed forwards.
  • a side guide plate 17 is placed in each corner formed by the side plate 13, lip plate 12 and rear plate 11, and centre guide plates 18 are placed in the middle of the scoop, between the lip plate, rear plate and the upper edge 14 of the rear plate in such a way that a convergent inlet passage is formed in front of each pump.
  • the space remaining behind the guide plates is made water-tight. In this way, the buoyancy applied to the scoop has been increased which reduces the force required for moving the scoop in the water.
  • the front edge of the lip plate 12 is provided with claws 19.
  • the pumps 9 are provided in front of their suction openings with shredding blades 20 rotating with rotors.
  • the scoop shown in Figs. 4 and 5 is formed by a rear plate 21, side plates 22 and a lip plate 23.
  • the upper edge 24 of the rear plate is bent forwards and downwards in such a way that a kind of hood is formed.
  • Pumps 25 are similar to the ones in the scoop of Fig. 2 but they are placed in the upper part of the rear plate so that the suction opening is directed downwards, towards the lip plate.
  • a horizontal shaft 26 parallel to the width of the scoop, is journalled in the side plates 22.
  • a pivoting screen having the same width as the scoop and provided at its upper part with a guide plate 27 and at its lower part a grate 28, is fasted on the shart 26.
  • the grate is formed by bars fastened at equal spacings in the guide plate and curving forward.
  • Figs. 6 and 7 show the working of a scoop of the type shown in Figs. 4 and 5, arranged as a hoe scoop.
  • the side plates 22 are still provided with a front stopper 31 and rear stopper 32 which respectively define the front limit and the rear limit of the movement of the plate 27 and grate 28.
  • the guide plate 27 and grate 28 are at the rear position.
  • the guide plate prevents the direct flow of water into the suction openings of the pumps 25.
  • the grate again prevents big stones and other pieces from entering the pump.
  • the grate also cuts and disintegrates ground material. In order to make this more efficient, the front edge can be formed sharp.
  • the scoop is turned into an emptying position (Fig. 7), so that the guide plate and the grate are turned into their front position where the tips of the bars of the grate point directly downwards. In this way, the material remaining on the grate falls easily off.
  • a hoe scoop is particularly suitable for dredging relatively hard ground material.
  • a dipper shovel again is particularly suitable for removing soft or loose material.
  • the apparatus When using the apparatus, it is transported to the site and anchored firmly by means of the anchoring poles 5.
  • the apparatus can be turned around either one of the poles 5, and in this way a sector with a desired area can be dredged from one point.
  • By means of the turning, folding boom arrangement it is also possible to dredge a fairly wide sector at one position of the support legs 6.
  • the scoop When dredging, the scoop is moved with a suitable speed so that the material loosened by the scoop and disintergrated by the claws 19 and the grate 28 is carried to the pumps 9, 25, and further via the discharge pipe 10 to a desired place.
  • the shredding device 20 of the pump disintegrates the material, particularly water plants and the like in it so that no blockages or disturbances are formed in the pump.
  • the bent upper edge 14, 24 of the rear plate of the scoop, and the possible guide plate 27 of the screen prevent pure water from flowing directly to the pumps 9, 25 which makes the suction effect more efficient and improves the efficiency of the dredging.
  • the apparatus can be used for conventional excavating if the material to be removed is too dense for pumping.
  • the scoop and the suction device can be mounted also on a boom arrangement of an excavator travelling on land.
  • a boom arrangement of an excavator travelling on land In this way, shore waters or small subjects, such as canals or basings, can conveniently be dredged.
  • Fig. 8 shows such an embodiment.
  • the base is an excavator 32 travelling on caterpillar bands 31.
  • the boom arrangement 2 corresponds to the one in Fig. 1
  • the scoop 3′ and the suction device 4′ correspond to the ones in Figs. 4 and 5.
  • the scoop can be provided with one pump only, or there can be more than two pumps.
  • the pumps can alse be placed in some other way than side by side.
  • the size and shape of the scoop can be made different according to the requirements of a specific dredging work in each case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Une drague aspirante comprend un godet (3) monté sur un agencement à flèche et un dispositif aspirant (4) se composant d'une pompe de drague (9) montée sur le godet et d'un agencement de conduite d'évacuation (10).

Claims (9)

1. Un appareil de dragage par succion comprenant une base (1/32); un équipement d'ancrage de la base (5, 6/31), un dispositif de bras hydrauliques (2) pouvant tourner autour d'un axe vertical et monté sur la base; une pelle pivotant verticalement (3) fixée au dispositif de bras et ayant une plaque de bec (17/23), des plaques latérales (13/22) et une plaque arrière (11/21) recourbée vers l'arrière à sa partie supérieure; et un dispositif de succion (4) comportant un dispositif de tuyau de décharge (10) et une pompe de dragage (9/25) qui est une pompe centrifuge reliée au dispositif de tuyau de décharge, caractérisé en ce que la pompe de dragage (9/25) est montée de manière fixe sur la plaque arrière (11/21) de la pelle (3) pour pivoter simultanément avec la pelle par rapport au dispositif de bras de manière à ce que l'ouverture de succion de la pompe soit à l'intérieur de la pelle et que le sens de succion suive toujours le mouvement de la pelle par rapport au dispositif de bras; le conduit d'entrée de la pompe dans la pelle étant convergeant en direction de la pompe au moyen de plaques de guidage (17/18/29/30) et la pelle étant pourvue de conteneurs d'air étanches à l'eau.
2. Un appareil selon la revendication 1, caractérisé en ce que la pompe est montée sur la plaque arrière (21) de manière à ce que le sens de succion de la pompe soit essentiellement dirigé vers le bas.
3. Un appareil selon la revendication 1, caractérisé en ce que les conteneurs sont des espaces définis par les plaques de guidage (17/18/29/30), la plaque de bec (17/23), les plaques latérales (13/22) ou la plaque arrière (11/21).
4. Un appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la pelle est équipée d'un écran (27/28) placé au dessus de la plaque de bec et mobile en rotation autour d'un arbre (26).
5. Un appareil selon la revendication 4, caractérisé en ce que l'écran est équipé d'une plaque de guidage (27) à sa partie supérieure.
6. Un appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de bras hydrauliques est un dispositif de bras repliables (2).
7. Un appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif de bras hydrauliques (2) peut tourner latéralement.
8. Un appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la base (1) est flottante et comprend de plus un équipement d'ancrage de la base comprenant des jambes supports pouvant tourner (6).
9. Un appareil selon la revendication 8, caractérisé en ce que des conteneurs ayant une certaine flottabilité sont disposés dans les jambes supports afin de faire en sorte que les jambes supports soient plus facile à remonter.
EP19870902092 1986-03-17 1987-03-17 Drague Expired EP0259472B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI861101 1986-03-17
FI861101A FI81864C (fi) 1986-03-17 1986-03-17 Sugmuddringsanordning

Publications (2)

Publication Number Publication Date
EP0259472A1 EP0259472A1 (fr) 1988-03-16
EP0259472B1 true EP0259472B1 (fr) 1991-09-25

Family

ID=8522309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870902092 Expired EP0259472B1 (fr) 1986-03-17 1987-03-17 Drague

Country Status (5)

Country Link
EP (1) EP0259472B1 (fr)
DK (1) DK156403C (fr)
FI (1) FI81864C (fr)
HU (1) HU201587B (fr)
WO (1) WO1987005649A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6860042B2 (en) * 2002-07-19 2005-03-01 Walker-Dawson Interests, Inc. Excavation system employing a jet pump
KR100457009B1 (ko) * 2002-08-13 2004-11-10 이기호 유압사용 건설기계장비를 위한 윤활유 자동공급장치
FI113846B (fi) * 2003-04-09 2004-06-30 Yhteisviejaet Tamex Oy Menetelmä maa-aineksen seulomiseksi ja seulaväline
ITPR20040041A1 (it) * 2004-06-10 2004-09-10 Zardi Costruzioni Di Zardi Angelo Dispositivo ed apparato draganti.
NL1029765C2 (nl) * 2005-08-18 2007-02-20 Gmb Beheer B V Rioolreinigingsvoertuig en werkwijze om riolering te reinigen.
KR100729864B1 (ko) 2006-05-03 2007-06-21 남선개발 주식회사 준설선
NL1033662C2 (nl) * 2007-01-03 2008-07-04 Martens En Van Oord Groep B V Systeem, inrichting en werkwijze voor verwijdering van bodemmateriaal.
RU172124U1 (ru) * 2016-11-24 2017-06-29 Публичное акционерное общество "Транснефть" (ПАО "Транснефть") Грунтосос
BE1026609B1 (nl) * 2018-09-14 2020-04-14 Van Rompay Boudewijn Gabriel Inrichting voor het verwijderen van slib en/of zand van de bodem van een watergebied
US20200318313A1 (en) * 2019-04-04 2020-10-08 Richard E Asherman Excavator bucket for underwater use

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE107974C (fr) * 1898-09-09
US776051A (en) * 1904-03-09 1904-11-29 Otto Fruehling Adjustable dredger-head for suction-dredges.
US2952083A (en) * 1956-07-27 1960-09-13 John H Forkner Dredge construction
FI47423C (fi) * 1965-09-18 1973-11-12 Mohn Upotettava keskipakopumppu.
DE1929111C3 (de) * 1968-06-17 1979-02-22 Giovanni Florenz Faldi (Italien) Saugbaggervorrichtung
US3774323A (en) * 1971-05-14 1973-11-27 Vaughan Co Composite bucket-hydraulic dredge
FI62885C (fi) * 1978-05-23 1983-03-10 Sah Ko Oy Arbetsponton
SE462289B (sv) * 1982-07-14 1990-05-28 Toyo Denki Kogyosho Co Ltd Muddringsanordning
FR2553128B1 (fr) * 1983-10-07 1986-04-11 Briand Ets Perfectionnement aux barges de dragage
DE3443375C1 (de) * 1984-11-28 1986-05-22 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf Löffel zum Räumen von Kanälen und Gräben
US4631844A (en) * 1985-07-15 1986-12-30 Deal Troy M Hydraulic shovel dredge system

Also Published As

Publication number Publication date
DK156403C (da) 1990-01-02
HUT49660A (en) 1989-10-30
EP0259472A1 (fr) 1988-03-16
FI861101A (fi) 1987-09-18
FI861101A0 (fi) 1986-03-17
FI81864B (fi) 1990-08-31
WO1987005649A1 (fr) 1987-09-24
HU201587B (en) 1990-11-28
FI81864C (fi) 1993-01-13
DK562687D0 (da) 1987-10-27
DK156403B (da) 1989-08-14
DK562687A (da) 1987-10-27

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