US3896566A - Submarine digging wheel which discharges material in an air chamber - Google Patents

Submarine digging wheel which discharges material in an air chamber Download PDF

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Publication number
US3896566A
US3896566A US444387A US44438774A US3896566A US 3896566 A US3896566 A US 3896566A US 444387 A US444387 A US 444387A US 44438774 A US44438774 A US 44438774A US 3896566 A US3896566 A US 3896566A
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US
United States
Prior art keywords
water
submarine
hood
hopper
buckets
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
US444387A
Other languages
English (en)
Inventor
Der Gaag Cornelis Van
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 NV
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
Application granted granted Critical
Publication of US3896566A publication Critical patent/US3896566A/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
    • 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
    • E02F3/8858—Submerged units
    • E02F3/8866—Submerged units self propelled
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • 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
    • E02F3/9218—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with jets
    • 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
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements

Definitions

  • a submarine dredge comprises a rotatable bucket wheel surmounted by a hood. Compressed air is fed beneath the hood so that the water level beneath the hood is maintained a substantial distance below the high point of the path of the buckets. As a result, the buckets discharge into air much more readily than they would discharge if totally submerged.
  • the solids discharged from the bucket are caught in a hopper within the wheel, and means are provided to supply water to the hopper so that a water-soil mixture can be removed by suction. Water jets are played into the buckets to assist discharge therefrom and the jets are controlled visually either remotely or directly.
  • the present invention relates to submarine dredges, more particularly of the type in which a rotary bucket wheel digs submarine soil and discharges the same into a suction tube for conveyance to the surface.
  • Known submarine dredges of this type suffer from the disadvantage that the submarine soil does not readily discharge from the buckets. In part, this is due to the fact that the difference between the specific gravity of the submarine soil and the specific gravity of the water in which the buckets operate, is not sufficiently great to promote rapid and easy discharge.
  • Another object of the present invention is to provide a submarine dredge which will be relatively simple and inexpensive to manufacture, easy to operate, maintain and repair, and rugged and durable in use.
  • a submarine dredge comprising a digging wheel I mounted for rotation about its horizontal axis on a conventional horizontal shaft (not shown), at the lower end of a vertically swinging arm (not shown) which is pivotally secured at its upper end to a floating device such as a barge (not shown) to receive the evacuated submarine soil.
  • Wheel 1 has a plurality of digging buckets 2 about its periphery, which buckets open radially inwardly toward the axis of rotation of wheel 1 so that they discharge submarine soil toward the center of the digging wheel when they are about at the zenith of their orbit.
  • the submarine soil is indicated in the drawing at 3 and the surface of the body of water in which the dredger is submerged, is indicated at 4.
  • Hopper 5 Disposed in the center of the wheel is an upwardly opening collecting hopper 5 which is nonrotatably carried by the digging wheel shaft and the dredger arm.
  • Hopper 5 has a conventional suction pipe 6 whose inlet end opens into the bottom of hopper 5.
  • Pipe 6 extends up the dredger arm to the barge or other collector for the evacuated submarine soil, on which a conventional suction pump (not shown) is provided for creating suction in pipe 6 to draw a mixture of water and submarine soil in hopper 5 through pipe 6 and up to the surface.
  • Water is supplied to hopper 5 through a water supply pipe 7 so as to provide sufficient water in hopper 5 to maintain a mixture that will flow readily through pipe 6.
  • hood 8 which preferably extends on all sides of wheel 1 at least as far down as the axis of rotation of wheel 1 and preferably farther.
  • Hood 8 is closed on all sides except the bottom and compressed air is supplied to the underside of hood 8 by a conventional compressed air supply 8' whose inlet beneath hood 8 is shown in the drawing.
  • a conventional compressed air supply 8' whose inlet beneath hood 8 is shown in the drawing.
  • the source of compressed air may be from a conventional air compressor (not shown) on the barge or other floating base of the dredge.
  • the dredging operation is monitored visually from a chamber 9 mounted on an upper rear portion of hood 8 and including a control panel 9' having viewing means thereon. Monitoring thus may be remote, by television camera, or direct, by an operator in chamber 9. Either way, water jet nozzles 10 are controlled so as to direct water into the buckets 2 thereby to control emptying of the buckets into hopper 5.
  • the same water pump (not shown) that supplies water to pipe 7 may supply water to nozzles 10.
  • the compressed air supply to the underside of hood 8 forces the water down to a level 11 such that the buckets discharge into hopper 5 from a distance substantially above the water level beneath hood 8.
  • the marine soil discharged from buckets 2 falls through the air and lands in the water in hopper 5, the water level 11 being preferably below the upper edges of hopper 5.
  • the difference in specific gravity between the dredged marine soil and the air through which it falls is so great as to promote its rapid fall; and the viscosity of air is so much less than that of water that the discharge from buckets 2 to hopper 5 is still further promoted.
  • the water level may vary over a considerable range, for example from 12 to 12', and is maintained by further additions of water from pipe 7, because the water outside hopper 5 is at a lower level than the upper edges of hopper 5 and so does not supply to hopper 5 the water necessary to maintain a flowable mixture in pipe 6.
  • a device according to the present invention is also amphibious and can be used both above and below water, as is sometimes necessary when excavating a talus which extends both above and below water.
  • a submarine dredge comprising a bucket wheel rotatable about a horizontal axis, a hood surmounting the bucket wheel, means to inject compressed air beneath the hood to drive the water level beneath the hood below the top of the bucket wheel so that the buckets discharge submarine soil into open air beneath the hood, a hopper within the wheel to catch submarine 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
US444387A 1973-02-21 1974-02-21 Submarine digging wheel which discharges material in an air chamber Expired - Lifetime US3896566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7302421,A NL168289C (nl) 1973-02-21 1973-02-21 Graafinrichting.

Publications (1)

Publication Number Publication Date
US3896566A true US3896566A (en) 1975-07-29

Family

ID=19818279

Family Applications (1)

Application Number Title Priority Date Filing Date
US444387A Expired - Lifetime US3896566A (en) 1973-02-21 1974-02-21 Submarine digging wheel which discharges material in an air chamber

Country Status (7)

Country Link
US (1) US3896566A (de)
JP (1) JPS5529214B2 (de)
BE (1) BE811291A (de)
DE (1) DE2408626A1 (de)
FR (1) FR2218437B1 (de)
GB (1) GB1423812A (de)
NL (1) NL168289C (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002679A1 (fr) * 1984-10-31 1986-05-09 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Procede pour l'abattage de la vase dans un bassin portuaire
US4903419A (en) * 1988-05-25 1990-02-27 Toa Corporation Method of and apparatus for dredging sludge in high density
NL8902253A (nl) * 1988-09-21 1990-04-17 Toa Corp Werkwijze en inrichting voor het transport van mengsels van grond en water.
WO2010075928A1 (de) * 2008-12-08 2010-07-08 ThyssenKrupp Fördertechnik GmbH Schutzeinrichtung für einen schaufelradbagger
CN104250983A (zh) * 2014-09-19 2014-12-31 卜建余 清淤机用滚吸式清淤头

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473228A1 (fr) * 1980-01-08 1981-07-10 Tim Tech Ind Minieres Dispositif de pose de cables sous-marins
US4397106A (en) * 1982-02-08 1983-08-09 Ellicott Machine Corporation Dredge bucket wheel structure
JPS63134721A (ja) * 1986-11-25 1988-06-07 Toa Harbor Works Co Ltd 高濃度浚渫装置
DE3710283C2 (de) * 1987-03-28 1998-04-16 Zueblin Ag Einrichtung zum Abbau und Abtransport von kontaminiertem Erdreich
JPH0637082Y2 (ja) * 1988-06-21 1994-09-28 鹿島建設株式会社 カッタ−ドラムの付着土砂除去装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US532182A (en) * 1895-01-08 Device for washing ores in river-bottoms
US708583A (en) * 1901-12-11 1902-09-09 George G Powell Dredging apparatus.
US719567A (en) * 1902-09-05 1903-02-03 John J Conlin Dredging and excavating machine.
US867984A (en) * 1906-12-21 1907-10-15 Simon Lake Dredging apparatus.
US1106038A (en) * 1911-12-14 1914-08-04 Otto Fruehling Cutter for suction-dredgers.
US2801479A (en) * 1954-09-03 1957-08-06 Charles W Brauer Excavating and loading device
US3480326A (en) * 1968-12-18 1969-11-25 Bethlehem Steel Corp Mechanical deep sea nodule harvester
US3614837A (en) * 1968-06-13 1971-10-26 Toshinobu Araoka Apparatus for dredging and sifting mud sands or gravel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US532182A (en) * 1895-01-08 Device for washing ores in river-bottoms
US708583A (en) * 1901-12-11 1902-09-09 George G Powell Dredging apparatus.
US719567A (en) * 1902-09-05 1903-02-03 John J Conlin Dredging and excavating machine.
US867984A (en) * 1906-12-21 1907-10-15 Simon Lake Dredging apparatus.
US1106038A (en) * 1911-12-14 1914-08-04 Otto Fruehling Cutter for suction-dredgers.
US2801479A (en) * 1954-09-03 1957-08-06 Charles W Brauer Excavating and loading device
US3614837A (en) * 1968-06-13 1971-10-26 Toshinobu Araoka Apparatus for dredging and sifting mud sands or gravel
US3480326A (en) * 1968-12-18 1969-11-25 Bethlehem Steel Corp Mechanical deep sea nodule harvester

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002679A1 (fr) * 1984-10-31 1986-05-09 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Procede pour l'abattage de la vase dans un bassin portuaire
US4903419A (en) * 1988-05-25 1990-02-27 Toa Corporation Method of and apparatus for dredging sludge in high density
NL8902253A (nl) * 1988-09-21 1990-04-17 Toa Corp Werkwijze en inrichting voor het transport van mengsels van grond en water.
WO2010075928A1 (de) * 2008-12-08 2010-07-08 ThyssenKrupp Fördertechnik GmbH Schutzeinrichtung für einen schaufelradbagger
CN104250983A (zh) * 2014-09-19 2014-12-31 卜建余 清淤机用滚吸式清淤头

Also Published As

Publication number Publication date
DE2408626A1 (de) 1974-08-22
FR2218437A1 (de) 1974-09-13
FR2218437B1 (de) 1978-08-11
GB1423812A (en) 1976-02-04
BE811291A (nl) 1974-08-20
NL168289B (nl) 1981-10-16
NL168289C (nl) 1982-03-16
AU6571074A (en) 1975-08-21
JPS5529214B2 (de) 1980-08-01
JPS49114241A (de) 1974-10-31
NL7302421A (de) 1974-08-23

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