EP0557619A1 - Dispositif de coupe monté sur l'éline d'une drague suceuse - Google Patents

Dispositif de coupe monté sur l'éline d'une drague suceuse Download PDF

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Publication number
EP0557619A1
EP0557619A1 EP92203801A EP92203801A EP0557619A1 EP 0557619 A1 EP0557619 A1 EP 0557619A1 EP 92203801 A EP92203801 A EP 92203801A EP 92203801 A EP92203801 A EP 92203801A EP 0557619 A1 EP0557619 A1 EP 0557619A1
Authority
EP
European Patent Office
Prior art keywords
cutter
knives
cutter assembly
ladder
apron
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
EP92203801A
Other languages
German (de)
English (en)
Other versions
EP0557619B1 (fr
Inventor
Johannes Van Den Elshout
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 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 IHC Holland NV filed Critical IHC Holland NV
Publication of EP0557619A1 publication Critical patent/EP0557619A1/fr
Application granted granted Critical
Publication of EP0557619B1 publication Critical patent/EP0557619B1/fr
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
    • 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

Definitions

  • the invention relates to a cutter assembly which is mountable to the ladder and/or the suction pipe of a suction dredger, which cutter assembly comprises a rotatably mounted, motor-driven and cage-shaped cutter with a number of knives arranged around the axis of rotation and with at least their ends connected to each other and an apron being fixedly arranged within the cutter and extending opposite the cutter knives and being shaped as a body of revolution, which apron has been connected to an end plate running radially and being positioned near the suction pipe.
  • Such a cutter assembly is known from NL-A-7013543 and has the disadvantage, that there is the possibility of not all loosened dredgings ending up in the suction pipe.
  • the object of the invention is to improve the cutter assembly described above in such a way, that said disadvantages are removed as much as possible.
  • the wall of the apron facing the cutter knives is at some distance from the knives and that on said wall, there is a guiding blade being substantially square to the wall and extending up to the knives, which blade runs such that the sludge loosened by the knives is transported to the suction opening situated in the end plate of the apron, with a cover having been fitted around part of the cutter, the cover extending at some distance from the knives and seen in direction of rotation thereof in such a way that only the part of the cutter where the material to be cut enters, is open.
  • the guiding blade will run spirally under such an angle that the direction of movement of the sludge supplied thereto by the cutter knives is deflected into the direction of the suction opening.
  • the outer edge of the knives leads in relation to the inner edge and that a substantially flat part connects to the inner edge, which part extends against the direction of rotation and runs almost tangential in relation of the body of revolution described by the inner edge of the cutter knives.
  • the cutter will have a conical shape, such as is the case with the known device, the cutter can also be made cilindrical. However, this will need no further explanation.
  • the cross-plates will have a part facing inwardly, which forms a cutting device together with the cutter knives.
  • plants such as for example reed, can be cut through and the danger of the cutter getting blocked by such plants is almost excluded.
  • the cutter assembly In working with the cutter assembly, it will be moved across the bottom substantially square to the axis of rotation of the cutter, and that in both directions. Herein, the cutter will always keep rotating in the same direction. In moving the cutter assembly in the direction in which the cutter also rotates near the bottom, the sludge can be brought into the enclosed space directly. When, however, the cutter assembly is moved across the bottom in opposite direction, with the one cross-plate approximately sliding across the bottom, the loosened sludge will first have to get past the open space between the opposing cross-plate and the bottom. Through this, functioning of the assembly would be adversely affected. In order to prevent this, it can be provided for, that the cover is pivotable around the longitudinal axis of the cutter assembly, or has a pivotable portion.
  • the cross-plates of the cover always connect to the bottom in the best possible way.
  • the cutter assembly has been pivotably connected to the ladder by means of a substantially horizontal shaft and that means are present for bringing the assembly to a desired position and for keeping it therein and means for remote determination of the position of the assembly.
  • FIG. 1 indicates a part of a suction dredger provided with a ladder 2, which in relation to the suction dredger 1 is pivotable around a horizontal axis not further indicated.
  • a suction pipe 3 has been connected to the ladder 2, which pipe has one side extending to a pump mounted on the suction dredger and not further indicated and has the other side connected to the cutter assembly 5 by means of the flexible pipe 4.
  • This cutter assembly 5 has been pivotally connected to a portion 7 protruding from the ladder 2, by means of the horizontal shaft 6, see also fig. 2, and is kept in the desired position by means of the hydraulic cylinder 8.
  • the ladder 2 can be brought to the desired height in a known way by means of a cable and winch not further indicated, the cutter assembly 5 then being in the operating position.
  • the cutter assembly 5 will now be described by way of the figures 2, 3 and 4 and comprises a bracket 9 connected to the end plate 10.
  • the suction opening 11 is present, which connects to the part 12 of the suction pipe, which part has the other side connected to the flexible pipe 4.
  • the end plate 10 has been provided with a bracket 13 representing the point of connection 14 for the hydraulic cylinder 8, while an opening not further indicated can be provided in the bracket.
  • the cutter assembly 5 can be almost fixedly connected to the ladder 2 by means of some bow shackles, for example when the assembly 5 is put out of operation and the hydraulic cylinder 8 has been disconnected.
  • a pipe 15 has been mounted in the end plate 10, which pipe serves for supporting the shaft 16, which can be driven by means of the hydraulic motor 17.
  • the bearing 18 is situated between the pipe 15 and the shaft 16.
  • the end plate 10 has also been connected to the conical apron 19 on which the guiding blade 20 has been mounted.
  • the blade is almost square to the plate 19 and extends across this plate in a helical shape such that it ends at the end plate 10 just after the suction opening 11, as seen in the direction of rotation V of the cutter 21 to be described hereinafter.
  • the cutter 21 comprises the hub 22, which has been mounted on the shaft 16 and has been secured on it by way of a key and nut not further indicated. From the part running radially, the knives 23 extend towards the supporting ring 24, which is situated near the end plate 10.
  • the outer edge 25 of the cutter knives 23 runs ahead of the inner edge 26 as seen in the direction of rotation V of the cutter 21 and a substantially flat part 27 connects to the inner edge 26. It was found, that in this way, the radially inward flow of sludge loosened by the cutter knives 23 is improved. The sludge gets into the space 28 between the cutter and the apron 19 and is guided to the suction opening 11 in the plate 10 by the guiding blade 20 present in said space.
  • the cover 29, which is substantially in the shape of a conical plate 30, extends around a part of the cutter 21.
  • the plate 30 has at one end been provided with a ring 31, which has been secured to the end plate 10 by means of bolts not further indicated.
  • the cover has been closed by a disc 32, which is situated near the end of the cutter 21.
  • the plate 30 lies at some distance from the cutter knives 23 and each of the longitudinal edges 33 of the plate 30 has been provided with a cross-plate 34.
  • the cross-plates 34 are supported by a U-shaped bent pipe 35, the part 36 of which lies in front of the disc 32, as appears in particular from fig. 4.
  • the pipe 35 can then serve as buffer when an object would be present under water.
  • the pipe parts situated near the longitudinal edges 33 have further been supported by means of the plates 37.
  • edges of the cross-plates 34 facing the cutter 21 have been cut obliquely, like the edges of the cutter knives 23, so that these edges can cooperate for cutting through plants or the like.
  • the cross-plates 34 will be at such height in relation to the cutter 21, that they determine the thickness of the layer of sludge to be loosened.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Harvester Elements (AREA)
EP19920203801 1992-02-28 1992-12-08 Dispositif de coupe monté sur l'éline d'une drague suceuse Expired - Lifetime EP0557619B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200368 1992-02-28
NL9200368A NL9200368A (nl) 1992-02-28 1992-02-28 Cutter-samenstel zoals voor montage aan de ladder van een baggerzuiger.

Publications (2)

Publication Number Publication Date
EP0557619A1 true EP0557619A1 (fr) 1993-09-01
EP0557619B1 EP0557619B1 (fr) 1995-12-13

Family

ID=19860492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920203801 Expired - Lifetime EP0557619B1 (fr) 1992-02-28 1992-12-08 Dispositif de coupe monté sur l'éline d'une drague suceuse

Country Status (3)

Country Link
EP (1) EP0557619B1 (fr)
DE (1) DE69206778T2 (fr)
NL (1) NL9200368A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712963A3 (fr) * 1994-11-21 1996-05-29 Ballast Nedam Baggeren B.V. Dispositif et procédé pour enlever des matériaux dragués
WO2004111354A1 (fr) * 2003-06-12 2004-12-23 Baggerwerken Decloedt En Zoon N.V. Dispositif et procede de dragage et de recuperation de materiaux de dragage
WO2006089866A1 (fr) * 2005-02-22 2006-08-31 Dredging International Tete a defoncer pour dragage de sol, et procede correspondant
WO2015160255A1 (fr) 2014-04-18 2015-10-22 Ihc Holland Ie B.V. Couvercle universel pour tête de coupe
CN108166550A (zh) * 2017-12-23 2018-06-15 郑州国知网络技术有限公司 一种带预绞碎的加压抽泥装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004442C2 (en) 2010-03-22 2011-09-23 Baggerwerken Decloedt & Zn N V Cutter suction dredger for dredging ground and method for dredging using this cutter suction dredger.
CN111255000A (zh) * 2020-01-21 2020-06-09 武汉澄川朗境环境科技有限公司 一种绞吸式挖泥船绞刀装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7013543A (fr) * 1970-09-14 1972-03-16
US3807066A (en) * 1972-11-29 1974-04-30 N Proehl Cutter head for suction dredge
FR2282036A1 (fr) * 1974-08-16 1976-03-12 Tax Hans Installation pour l'extraction des nodules de minerai situes au fond de la mer
NL7812140A (nl) * 1978-12-13 1980-06-17 Reba Bv Zuigkop voor een sleepzuiger.
EP0430316A2 (fr) * 1990-11-02 1991-06-05 Baggermaatschappij Boskalis Bv Tête coupant pour un outil de dragage, notamment pour dragues suceuses coupantes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7013543A (fr) * 1970-09-14 1972-03-16
US3807066A (en) * 1972-11-29 1974-04-30 N Proehl Cutter head for suction dredge
FR2282036A1 (fr) * 1974-08-16 1976-03-12 Tax Hans Installation pour l'extraction des nodules de minerai situes au fond de la mer
NL7812140A (nl) * 1978-12-13 1980-06-17 Reba Bv Zuigkop voor een sleepzuiger.
EP0430316A2 (fr) * 1990-11-02 1991-06-05 Baggermaatschappij Boskalis Bv Tête coupant pour un outil de dragage, notamment pour dragues suceuses coupantes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712963A3 (fr) * 1994-11-21 1996-05-29 Ballast Nedam Baggeren B.V. Dispositif et procédé pour enlever des matériaux dragués
NL9401939A (nl) * 1994-11-21 1996-07-01 Ballast Nedam Baggeren Bv Inrichting voor het verwijderen van baggermateriaal, alsmede werkwijze voor het bedrijven daarvan.
WO2004111354A1 (fr) * 2003-06-12 2004-12-23 Baggerwerken Decloedt En Zoon N.V. Dispositif et procede de dragage et de recuperation de materiaux de dragage
BE1015566A5 (nl) * 2003-06-12 2005-06-07 Decloedt & Zoon Baggerwerken Inrichting en werkwijze voor het losmaken en winnen van baggermateriaal.
WO2006089866A1 (fr) * 2005-02-22 2006-08-31 Dredging International Tete a defoncer pour dragage de sol, et procede correspondant
BE1016461A3 (nl) * 2005-02-22 2006-11-07 Dredging Int Snijkop voor het baggeren van grond en werkwijze voor het baggeren met behulp van deze snijkop.
US7647712B2 (en) 2005-02-22 2010-01-19 Dredging International Cutter head for dredging soil and method for dredging by means of this cutter head
WO2015160255A1 (fr) 2014-04-18 2015-10-22 Ihc Holland Ie B.V. Couvercle universel pour tête de coupe
CN108166550A (zh) * 2017-12-23 2018-06-15 郑州国知网络技术有限公司 一种带预绞碎的加压抽泥装置

Also Published As

Publication number Publication date
DE69206778D1 (de) 1996-01-25
DE69206778T2 (de) 1996-06-05
NL9200368A (nl) 1993-09-16
EP0557619B1 (fr) 1995-12-13

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