EP0882847A3 - Method of measuring the trailing force exerted on a dredging arm during operation of a floating dredge and in particular a hopper suction dredge. - Google Patents

Method of measuring the trailing force exerted on a dredging arm during operation of a floating dredge and in particular a hopper suction dredge. Download PDF

Info

Publication number
EP0882847A3
EP0882847A3 EP98201377A EP98201377A EP0882847A3 EP 0882847 A3 EP0882847 A3 EP 0882847A3 EP 98201377 A EP98201377 A EP 98201377A EP 98201377 A EP98201377 A EP 98201377A EP 0882847 A3 EP0882847 A3 EP 0882847A3
Authority
EP
European Patent Office
Prior art keywords
dredge
dredging
force exerted
trailing force
measuring
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.)
Ceased
Application number
EP98201377A
Other languages
German (de)
French (fr)
Other versions
EP0882847A2 (en
Inventor
Cornelis De Keizer
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
Publication of EP0882847A2 publication Critical patent/EP0882847A2/en
Publication of EP0882847A3 publication Critical patent/EP0882847A3/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2045—Guiding machines along a predetermined path
    • 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
    • E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors
    • 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
    • E02F9/26—Indicating devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

Method of measuring the trailing force exerted on a dredging arm during operation of a floating dredge, in which said trailing force is derived from an algorithm using process data being measured during dredging. The following data can be applied as process data, either individually or in combination:
  • a) the concentration of the mixture brought up by dredging, in the suction tube;
  • b) the velocity of the dredged mixture in the suction tube; and
  • c) the pressure difference over the suction head.
    • With the use of a Kalman filter the relation between the actual trailing force exerted on the dredging arm and the measured pressure difference over the suction head is estimated continuously, so that the actual trailing force can be calculated.
    EP98201377A 1997-06-04 1998-05-06 Method of measuring the trailing force exerted on a dredging arm during operation of a floating dredge and in particular a hopper suction dredge. Ceased EP0882847A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    NL1006223A NL1006223C2 (en) 1997-06-04 1997-06-04 Method for measuring the tensile force exerted on a dredging arm thereof during operation of a dredging vessel.
    NL1006223 1997-06-04

    Publications (2)

    Publication Number Publication Date
    EP0882847A2 EP0882847A2 (en) 1998-12-09
    EP0882847A3 true EP0882847A3 (en) 1999-09-29

    Family

    ID=19765094

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98201377A Ceased EP0882847A3 (en) 1997-06-04 1998-05-06 Method of measuring the trailing force exerted on a dredging arm during operation of a floating dredge and in particular a hopper suction dredge.

    Country Status (3)

    Country Link
    EP (1) EP0882847A3 (en)
    NL (1) NL1006223C2 (en)
    NO (1) NO982128L (en)

    Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JPS6275104A (en) * 1985-09-30 1987-04-07 Komatsu Ltd Controlling method of hydraulic actuation type working machine
    GB2204291A (en) * 1987-04-27 1988-11-09 Amtel Inc Lightweight transfer referencing and mooring system
    GB2242788A (en) * 1990-03-29 1991-10-09 Eca System for laying cables or pipes on the sea bed
    US5321637A (en) * 1991-01-10 1994-06-14 Indresco, Inc. Method for measuring the weight of a suspended load
    JPH07260482A (en) * 1994-03-17 1995-10-13 Penta Ocean Constr Co Ltd Dredge positioning method for dredger ship
    JPH0914962A (en) * 1995-06-28 1997-01-17 Komatsu Ltd Instrument for measuring position of construction vehicle
    JPH0934544A (en) * 1995-07-20 1997-02-07 Shinko Electric Co Ltd Controller for submarine work wagon

    Patent Citations (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JPS6275104A (en) * 1985-09-30 1987-04-07 Komatsu Ltd Controlling method of hydraulic actuation type working machine
    GB2204291A (en) * 1987-04-27 1988-11-09 Amtel Inc Lightweight transfer referencing and mooring system
    GB2242788A (en) * 1990-03-29 1991-10-09 Eca System for laying cables or pipes on the sea bed
    US5321637A (en) * 1991-01-10 1994-06-14 Indresco, Inc. Method for measuring the weight of a suspended load
    JPH07260482A (en) * 1994-03-17 1995-10-13 Penta Ocean Constr Co Ltd Dredge positioning method for dredger ship
    JPH0914962A (en) * 1995-06-28 1997-01-17 Komatsu Ltd Instrument for measuring position of construction vehicle
    JPH0934544A (en) * 1995-07-20 1997-02-07 Shinko Electric Co Ltd Controller for submarine work wagon

    Non-Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 011, no. 272 (M - 622) 4 September 1987 (1987-09-04) *
    PATENT ABSTRACTS OF JAPAN vol. 096, no. 002 29 February 1996 (1996-02-29) *
    PATENT ABSTRACTS OF JAPAN vol. 097, no. 005 30 May 1997 (1997-05-30) *
    PATENT ABSTRACTS OF JAPAN vol. 097, no. 006 30 June 1997 (1997-06-30) *

    Also Published As

    Publication number Publication date
    NO982128L (en) 1998-12-07
    NL1006223C2 (en) 1998-12-16
    NO982128D0 (en) 1998-05-11
    EP0882847A2 (en) 1998-12-09

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