EP0218286B1 - A working method and a device for the removal of growth from constructions under the sea level - Google Patents

A working method and a device for the removal of growth from constructions under the sea level Download PDF

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Publication number
EP0218286B1
EP0218286B1 EP86201578A EP86201578A EP0218286B1 EP 0218286 B1 EP0218286 B1 EP 0218286B1 EP 86201578 A EP86201578 A EP 86201578A EP 86201578 A EP86201578 A EP 86201578A EP 0218286 B1 EP0218286 B1 EP 0218286B1
Authority
EP
European Patent Office
Prior art keywords
disc
growth
removal
under
working method
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
EP86201578A
Other languages
German (de)
French (fr)
Other versions
EP0218286A1 (en
Inventor
Gerrit Broersz
Petrus Nicolaas Henricus De Kuyer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0218286A1 publication Critical patent/EP0218286A1/en
Application granted granted Critical
Publication of EP0218286B1 publication Critical patent/EP0218286B1/en
Expired legal-status Critical Current

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Classifications

    • B08B1/32—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B63B59/08—Cleaning devices for hulls of underwater surfaces while afloat

Definitions

  • the invention relates to a device for the removal of growths on constructions of several origins, which are under the sea water level, such as pillars and other supports of artificial islands for oceanographic investigation and for the winning of raw materials, comprising drilling platforms as well as pipe lines etc.
  • the device described therein has appeared to be particularly appropriate for the removal of crustaceans and other growths from constructions used for the support of artificial islands as well as from floating constructions. It is characterized by a flexible sheet upon which two or more shields are mounted, upon each of which a driving mechanism is attached, which by means of conduit pipes pneumatically or hydraulically can rotate a driving shaft which is perpendicularly mounted upon said flexible sheet and upon which different mutually exchangeable bearing devices with scrubbing means can be fastened.
  • the flexible sheet can be moved around bent curved surfaces.
  • the scrubbing means the growths are removed effectively while no damage of the construction can take place, such as that which is likely to appear by removal of growths with linearly applied hand tools, such as chisels, mallets etc.
  • knives, bristles, teeth and/ or scouring cushions are used as scrubbing means.
  • the apparatus according to the present invention for removal of growth from constructions under the sea water level comprises a flexible sheet which can be positioned around and moved over curved surfaces.
  • the flexible sheet is provided with several shields, each of which carries a shaft-driving mechanism, perpendicularly to the flexible sheet, and each driving mechanism is connected by bolts with a circular disc, upon which six rectangular chisel-shaped scouring elements of steel are positioned in a secant configuration towards the circumference of said disc, under an angle of 30° declining from the radial directions of the circular disc.
  • Each of the chisel-shaped scouring elements extends outside of the circumference of the said disc, and has a bevelled edge at one of its oblong sides.
  • the material and the shape of said chisels are selected according to an assortment, which gives the choice dependent on the kind of the surface to be cleaned and in particular on the nature of the growths to be removed, which may vary from coralline, shell valves, mussels, seaweed, algae, corrosion, to tectonic and chemical crusts and filthiness.
  • this consists of a circular disc upon which rectangular elements or means are welded which are square in cross-section, and which are bevelled along one of the oblong edges in the shape of a chisel.
  • a powerful impulsion is caused, which results in a fast and efficacious crumbling off of the growth or fouling sediment.
  • Other shapes of the scouring elements are used with this device as well, in particular with straight parts, and with parts deflected at the extremities, extending at the outerside of the circular contours of the rotatory disc, said deflected parts reaching upwards or downwards respectively.
  • the invention is further elucidated on the basis of the enclosed figures 1-5.
  • Figure 1 shows a view of one embodiment of the device according to the present invention.
  • Figure 2 shows a view of the underside and a side view of a scouring tool according to the invention.
  • Figure 3 shows schematically the placing of two rotatory scouring devices which rotate in directions opposite to one another.
  • Figure 4 shows a side view of the device according to the invention.

Description

  • The invention relates to a device for the removal of growths on constructions of several origins, which are under the sea water level, such as pillars and other supports of artificial islands for oceanographic investigation and for the winning of raw materials, comprising drilling platforms as well as pipe lines etc.
  • In the British Patent Application 84.25.322 (corresponding to DE-A-3535213) and the Netherlands Patent Application 85.01.089 a device is described for the scrubbing and removal of growths and foulings from structures which are under or above the water level.
  • The device described therein has appeared to be particularly appropriate for the removal of crustaceans and other growths from constructions used for the support of artificial islands as well as from floating constructions. It is characterized by a flexible sheet upon which two or more shields are mounted, upon each of which a driving mechanism is attached, which by means of conduit pipes pneumatically or hydraulically can rotate a driving shaft which is perpendicularly mounted upon said flexible sheet and upon which different mutually exchangeable bearing devices with scrubbing means can be fastened.
  • In this way any profiles, elevations, etc. can be scoured off.
  • The flexible sheet can be moved around bent curved surfaces.
  • By "the scrubbing means the growths are removed effectively while no damage of the construction can take place, such as that which is likely to appear by removal of growths with linearly applied hand tools, such as chisels, mallets etc.
  • Upon the used bearing devices, which have a circular circumference, knives, bristles, teeth and/ or scouring cushions are used as scrubbing means.
  • Surprisingly it now appeared that a considerably improved result with this work can be obtained if the scouring elements will neither be located as a bristle or as a flat circular scrubbing element around the axis of the bearing device nor be fastened in radial direction with regard to the axis of the bearing device.
  • The apparatus according to the present invention for removal of growth from constructions under the sea water level comprises a flexible sheet which can be positioned around and moved over curved surfaces. The flexible sheet is provided with several shields, each of which carries a shaft-driving mechanism, perpendicularly to the flexible sheet, and each driving mechanism is connected by bolts with a circular disc, upon which six rectangular chisel-shaped scouring elements of steel are positioned in a secant configuration towards the circumference of said disc, under an angle of 30° declining from the radial directions of the circular disc.
  • Each of the chisel-shaped scouring elements extends outside of the circumference of the said disc, and has a bevelled edge at one of its oblong sides.
  • The material and the shape of said chisels are selected according to an assortment, which gives the choice dependent on the kind of the surface to be cleaned and in particular on the nature of the growths to be removed, which may vary from coralline, shell valves, mussels, seaweed, algae, corrosion, to tectonic and chemical crusts and filthiness.
  • According to one embodiment of the tool under the invention, to which it is not restricted however, this consists of a circular disc upon which rectangular elements or means are welded which are square in cross-section, and which are bevelled along one of the oblong edges in the shape of a chisel. By the rotatory motion a powerful impulsion is caused, which results in a fast and efficacious crumbling off of the growth or fouling sediment. Other shapes of the scouring elements are used with this device as well, in particular with straight parts, and with parts deflected at the extremities, extending at the outerside of the circular contours of the rotatory disc, said deflected parts reaching upwards or downwards respectively.
  • For the removal of miscellaneous types of growth, which appear in practice, these shapes of elements will be combined with one another.
  • Furthermore they can also be put upon discs provided with bristles, the threads of which being of metal or of polymers, and standing perpendicularly with respect to each disc, such that an action results, which is simultaneously shattering, scouring and wiping off.
  • Practical experiments have been carried out by divers, which showed that sweeping with the described types of the device enables a complete cleansing under severe conditions, such as are appearing in tropical estuaries and at continental shelves along tropical shores.
  • The invention is further elucidated on the basis of the enclosed figures 1-5.
  • Figure 1 shows a view of one embodiment of the device according to the present invention.
  • Therein 1 is the circular disc which is mounted with bolts (2) upon the rotatory means being driven pneumatically or hydraulically at the flexible sheet, and (3) reproduces the rectangular chisel-shaped scouring elements each being placed in a secant configuration, under an angle of 30° with respect to the radius of the disc.
  • Figure 2 shows a view of the underside and a side view of a scouring tool according to the invention.
  • Figure 3 shows schematically the placing of two rotatory scouring devices which rotate in directions opposite to one another.
  • Figure 4 shows a side view of the device according to the invention.

Claims (2)

1. A device for removal of growth from constructions under the sea water level, comprising a flexible sheet (5), which can be positioned around and moved over curved surfaces, said flexible sheet (5) being provided with several shields, each of which carrying a shaft-driving mechanism (4) perpendicularly to said sheet (5), each said driving mechanism (4) being connected by bolts (2) with a circular disc (1), upon which six rectangular chisel-shaped scouring elements (3) of steel are positioned in a secant configuration towards the circumference of said disc (1) under an angle of 30° declining from the radial directions of said disc (1), each of said chisel-shaped scouring elements (3) extending outside of the circumference of said disc (1), and having a bevelled edge at one of its oblong sides.
2. A working method for removing the growth from constructions under the sea level, using a device as described in claim 1.
EP86201578A 1985-09-17 1986-09-13 A working method and a device for the removal of growth from constructions under the sea level Expired EP0218286B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502532A NL191018C (en) 1985-09-17 1985-09-17 Tool for removing fouling on structures below sea level.
NL8502532 1985-09-17

Publications (2)

Publication Number Publication Date
EP0218286A1 EP0218286A1 (en) 1987-04-15
EP0218286B1 true EP0218286B1 (en) 1989-12-20

Family

ID=19846564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201578A Expired EP0218286B1 (en) 1985-09-17 1986-09-13 A working method and a device for the removal of growth from constructions under the sea level

Country Status (3)

Country Link
EP (1) EP0218286B1 (en)
DE (1) DE3667644D1 (en)
NL (1) NL191018C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166342B (en) * 1984-10-06 1988-02-10 Gerritt Broersz Underwater scouring apparatus
US6006391A (en) * 1997-11-10 1999-12-28 Speedfam-Ipec Corporation Workpiece cleaning element with improved rib configuration
CN103213659B (en) * 2013-01-10 2016-07-13 张家港同宇智能机电科技有限公司 Device removed by a kind of barnacle
CN113320663A (en) * 2021-05-28 2021-08-31 飞马滨(青岛)智能科技有限公司 Underwater intelligent cleaning detection robot

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1349167A (en) * 1920-03-23 1920-08-10 William J Pattosien Power ship-cleaning device
US2725907A (en) * 1954-11-17 1955-12-06 William F Hagen Disc cutter
FR1218804A (en) * 1958-03-10 1960-05-12 Simmonds Aerocessories Ltd Cutting, abrasion and similar tool
US3628489A (en) * 1969-11-10 1971-12-21 Global Marine Inc Hull-cleaning brush
US4372242A (en) * 1978-06-01 1983-02-08 Marinkonsult Hans Lundberg Ag Assembly for treating vessel hulls
EP0131987B1 (en) * 1983-07-04 1987-07-08 Boud Van Rompay Apparatus for use by a diver to brush or scrape the walls of structures lying underwater
GB2166342B (en) * 1984-10-06 1988-02-10 Gerritt Broersz Underwater scouring apparatus
BE900965A (en) * 1984-10-31 1985-02-15 Rompay Boud Van Scraper to remove barnacles from surface - has driven disc carrying outwardly projecting contoured tapering cutter blades

Also Published As

Publication number Publication date
NL191018C (en) 1994-12-16
NL8502532A (en) 1987-04-16
EP0218286A1 (en) 1987-04-15
NL191018B (en) 1994-07-18
DE3667644D1 (en) 1990-01-25

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