US3152409A - Dredging equipment - Google Patents

Dredging equipment Download PDF

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Publication number
US3152409A
US3152409A US211493A US21149362A US3152409A US 3152409 A US3152409 A US 3152409A US 211493 A US211493 A US 211493A US 21149362 A US21149362 A US 21149362A US 3152409 A US3152409 A US 3152409A
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US
United States
Prior art keywords
jet
ladder
barge
suction line
pump
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
US211493A
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English (en)
Inventor
Charles D Ramsden
Russell J Robertson
William G Fraser
Ole P Erickson
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.)
PACIFIC COAST ENG CO
PACIFIC COAST ENGINEERING Co
Original Assignee
PACIFIC COAST ENG CO
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
Priority to NL137396D priority Critical patent/NL137396C/xx
Priority to NL295628D priority patent/NL295628A/xx
Application filed by PACIFIC COAST ENG CO filed Critical PACIFIC COAST ENG CO
Priority to US211493A priority patent/US3152409A/en
Priority to GB25776/63A priority patent/GB1000618A/en
Application granted granted Critical
Publication of US3152409A publication Critical patent/US3152409A/en
Priority to NL6705755A priority patent/NL6705755A/xx
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
    • E02F3/8833—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
    • 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
    • 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
    • E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
    • 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
    • E02F3/9231—Suction wheels with axis of rotation parallel to longitudinal axis of the suction pipe
    • 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

Definitions

  • Our invention relates to under Water dredging and more particularly to improved dredging equipment for such purpose.
  • a centrifugal pump for such purposes can be designed and built to produce a discharge pressure which is only limited by practical considerations of cost, power requirements and physical size.
  • a centrifugal pump is limited in its ability to provide suction pressure or vacuum pressure by the fact that the maximum theoreical vacuum pressure is a perfect vacuum of 29 to 30 inches of mercury. Regardless of size, power, or other design considerations in the pump, the suction pressure cannot exceed atmospheric pressure as represented by the creation of a perfect vacuum at the intake or suction side of the pump.
  • a practical design of a dredge pump produce an effective vacuum pressure of the order of 23 to 26 inches of mercury.
  • the velocity of the fluid mixture flowing through the suction pipe to the pump must be sufficiently high to carry and trans port the solid matter such as sand, gravel and rock, usually found in suspension.
  • This suction pipe velocity is normally held at a minimum of 8 to 12 feet per second as a result of both laboratory tests and practical experience.
  • the differential pressure created between the existing atmospheric pressure and the negative suction pressure developed at the suction side of the pump is the only force available to perform two basic functions, namely (1) to overcome frictional losses occurring as the water and solid mixture enters the suction line and is transmitted therealong to the centrifugal pump itself, and (2) to provide power in the form of velocity and pressure to physically elevate the specific weight of solid material from the bottom of the body of the water up to the dredge pump.
  • the conventional centrifugal dredge pump could be made to pump mixtures up to 50 to 60 percent solids as compared to the 15 to 20 percent solids under the previously existing conditions. This could double the output of a given pump, or in the alternative, a comparable output could be realized with a pump of smaller size than previously deemed necessary.
  • FIGS. 1A and 1B together constitute a side view in elevation of dredging equipment embodying the features of the present invention
  • FIGS. 2A and 2B together constitute a plan view of the equipment depicted in FIGS. 1A and 1B;
  • FIG. 3 is a view partly in section, depicting details of a jet pump assembly and associated cutter constituting important features of the dredging equipment of the preceding figures;
  • FIG. 4 is a transverse view taken in the plane 44 of FIG. 3:
  • FIG. 5 is a transverse view taken in the plane 5-5 of FIG. 3:
  • FIG. 6 is a longitudinal view, partly in section, depict ing with greater clarity, jet construction details of the jet pump assembly of FIG. 3;
  • FIG. 7 is a View in section taken in the plane 7-7 of FIG. 6.
  • all the power equipment is installed on a barge 1 having parallel spaced forward extensions 3 and 5, leaving a channel '7 of exposed water between them, for the anchored end of a digging ladder 9, which is hingedly secured to the barge by a hinge mounting, thus permitting of the digging ladder being lowered and raised with respect to a horizontal stored position.
  • This digging ladder in the main, is of girder construction involving four longitudinal corner members 15, 17, 19, 21, inter-connected by a lattice work of angle iron members 25.
  • the ladder At the barge end, the ladder includes tapered side plates 29, with the two upper corner members and 17 extending therealong and terminating in shaft bearing 31 for hingedly securing the digging ladder at the barge.
  • a conventional centrifugal type dredge pump 35 is mounted and powered by a prime mover 37 coupled thereto.
  • This pump is the main pump, there being auxiliary pump equipment involved in the system to which reference will later be made.
  • a suction line 41 connected at one end to this main pump, is formed with an intermediate flexible section 43 to permit the suction line to pass longitudinally into and along the digging ladder and flex with each hinge movement of such ladder, that portion of the suction line Within the ladder being supported therein in any suitable manner.
  • a jet pump assembly 47 Supported within the ladder adjacent the outboard end thereof is a jet pump assembly 47 coupled to the suction line 4-1 of the main centrifugal pump 35 on the barge.
  • This jet pump assembly includes a jet casting 4-9 having a cylindrical interior approaching in diameter, that of the suction line, the casting being formed with a plurality of jet passageways 53 in the wall thereof, at equally spaced points about the periphery of the casting, the passageways being formed to function as jets. Lining the interior of the casting from the discharge lips of the jets is a nickel alloy liner 55 to provide increased wear and durability.
  • the casting is flanged for bolting to the smaller end of a Venturi 57, which, in turn, at its larger end, is bolted to the suction line 41.
  • the opposite end of the jet casting is likewise flanged, and to this end, is bolted a hollow cylindrical mounting 59 for a cutter head 61, such hollow cylindrical mounting including a threaded tip 63 welded at one end within a cylindrical pipe section 65, the other end of which is welded between an outer and inner section 67, 69 respectively of a flange for aflixing the same to the proximate end of the jet pump assembly casting 49.
  • the cutter head mounting is finished 01f by a liner 71 anchored into position by a weld 73 at the tip of the mounting.
  • auxiliary or pressure pump 79 on the barge, preferably one of the centrifugal type, and of a size adapted to handle the requirements of the installation.
  • This latter pump has a suction line 81, with its intake end submerged in the water.
  • the discharge side of this pump is flow connected to a pressure housing 85 surrounding and enclosing that portion of the jet casting 49 in Which the jet passageways are located and forms part of the jet pump assembly.
  • the cutter head 61 With the cutter head 61 supported on the end of its mounting 59, provision must be made for rotating the same in order for the cutter head to function.
  • We provide for such rotational movement of the cutter head by utilizing the suction line 41 of the main pump, as a drive coupling or drive shaft, adapted to be driven from a prime mover 91 on the barge, and through its rotation, cause rotation of the cutter head.
  • the prime mover may be mounted on the ladder itself, preferably in proximity to the hinge line.
  • the flexible section 43 of the main pump suction line is terminated in a thrust box 95 supported within the digging ladder.
  • the initial section of the continuing suction line is rotatably anchored in suitably sealed bearings, and provided externally of the thrust box, with a gear 97 which may be coupled through a suitable drive assembly 99 to the cutter drive engine 91, which, in the embodiment illustrated, is located on one of the forward extensions of the barge alongside the hinged end of the digging ladder.
  • the thrust box serves as an end support for that portion of the suction line extending down through the digging ladder, which at spaced points along the ladder, will be rotatably supported in suitable bearings carried within the ladder for such purpose.
  • suction line as a drive shaft for the cutter head, necessitates construction of the pressure housing of the jet pump assembly, to permit of such rotation, without causing corresponding rotation of the pressure housing and the digging ladder to which it is connected, for such rotation of the digging ladder, not only could not be tolerated, but would create insurmountable problems.
  • the specific construction of the pressure housing 85 is such as will permit rotational movement of the suction line independently of the pressure housing, while maintaining a proper sealed condition between the housing and its mounting, to minimize loss of pressure from the inside of the housing, and the probable entrance of murky water and abrasive from outside the housing, particularly during quiescent periods.
  • a large end wall of substantially rectangular configuration having a large central opening 107, permitting the wall to loosely fit about the jet casting, and a smaller end wall 109 of substantially circular configuration, this smaller end wall also having a central opening 111 therethrough of sufficient size to fit over the cutter head mounting 59.
  • An outer Wall 113 of heavy sheet metal welded at one end to the periphery of the large rectangular wall 105, tapers to closely fit the circumference of the circular end wall 109 to which it is also welded.
  • the jet casting is formed with parallel peripheral ribs 117, 119 adapted to support a bearing ring 121 welded thereto against which an inturned sealing ring 123 may be maintained in relative sliding relationship by supporting it on a flange 12S bolted to the larger end wall about the circumference of the opening therein.
  • a similar flange 129 bolted about the circumference of the opening therethrough carries a bearing housing 131 in which is disposed a plurality of phenolic staves 133 for relative sliding contact with a sleeve 135 surrounding the cutter head mounting cylinder 65 and welded thereto, the sleeve preferably being chrome plated.
  • the bearing housing 131 at its inner end, which brings it within the jet or pressure housing 85, carries a sealing ring 139 in sealing engagement with the sleeve, and exposed to the pressure of water in the pressure housing to maintain sealing. Between this sealing ring 139 and the bearing staves 133 is a chamber 141 exposed to the admission of liquid from the pressure housing through small openings 143 provided in the bearing housing at this region, to effect and maintain water lubrication of the bearing staves at this end thereof.
  • the pressure housing is stabilized as to its location, as previously indicated, by its connection to the end of the digging ladder. Relative to the specific pressure housing under consideration, such connection to the digging ladder is effected by welding the ends of the two lower corner members 19 and 21 of the ladder to the larger end wall at the lower corners thereof, While the twin pressure line members 15 and 17 of the ladder pass through the upper corners of the larger end wall, to which they are welded.
  • the suction line may be rotated and function as a drive shaft, so as to drive the cutter head, and without affecting either the ability of the suction line to function as such, or to interfere with efficient supply of water at high pressure to the jets of the jet pump assembly.
  • the entire system may function for shallow dredging operations with substantially double the capacity of conventional available equipment of corresponding size, at the same time, permitting of dredging to depths far in excess of that capable with present-day conventional equipment.
  • depths of the order of about 140 feet represent the maximum economical capability of comparable present-day equipment, while, with equipment constructed in accordance with the present invention, dredging at depths exceeding 200 feet and more may be readily accomplished.
  • a pair of pontoons 151, 153 of sufiicient displacement to support the outboard end of the digging ladder are disposed, one to either side of the ladder, and are maintained in such spaced relationship by a bridge 155 connecting the two pontoons.
  • the resulting pontoon assembly is maintained at a distance from the barge by a pair of floating booms 157, 159, each connected at one end to the barge, and at its other end to one of the pontoons.
  • Rigidity is secured by means of cross cables 163, each connecting at one end to the anchor point of one of the floating booms, and at its other end to an upper corner of the bridge connecting the pontoons.
  • a sheave 171 constituting a component of a sheave system which includes a power driven winch 175 located on the barge, and a sheave 177 mounted on the digging ladder toward the outboard end thereof.
  • a cable 179 inter-coupling the winch and the aforementioned sheaves,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including at least one jet in the wall thereof,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including at least one jet in the wall thereof,
  • suction line and jet rotating means including a rotatable thrust bearing coupled in said suction line
  • said ladder raising and lowering means including a pair of pontoons one to either side of said ladder,
  • a sheave system including a Winch on said barge, a sheave on said bridge and cables from said winch, about said sheave and to said ladder.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including a plurality of jets in the wall thereof,
  • said suction line and jet rotating means including a rotatable thrust bearing coupled in said suction line, to divide said suction line into a non-rotating portion connecting to said centrifugal dredge pump, and an adjacent portion rotatable with respect thereto and connecting with said cutter head by way of said jet means and said coupling means,
  • said ladder raising and lowering means including a pair of pontoons one to either side of said ladder,
  • a sheave system including a winch on said barge, a sheave on said bridge and cables from said winch, about said sheave and to said ladder.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including a plurality of jets in the wall thereof,
  • said suction line and jet rotating means including a rotatable thrust bearing coupled in said suction line, to divide said suction line into a non-rotating portion connecting to said centrifugal dredge pump, and an adjacent portion rotatable with respect thereto and connecting with said cutter head by way of said jet means and said coupling means,
  • said ladder raising and lowering means including a pair of pontoons one to either side of said ladder,
  • a sheave system including a winch on said barge, a sheave on said bridge and cables from said winch, about said sheave and to said ladder.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • said digging ladder including a pipe line as a longitudinal structural member thereof
  • centrifugal type dredge pump on said barge and having a. suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including at least one jet in the wall thereof,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • said digging ladder including a pipe line as a longitudinal structural member thereof
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including a plurality of jets in the Wall thereof,
  • a pressure housing afl'ixed to said digging ladder with said pipeline terminating therein, said pressure housing surrounding said jet means and enclosing said jets,
  • said cutter head rotating means including a rotatable thrust bearing coupled in said suction line, to divide said suction line into a non-rotating portion connecting to said centrifugal dredge pump, and an adjacent portion rotatable with respect thereto and connecting with said cutter head by way of said jet means and said coupling means,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • said digging ladder including a pipe line as a longitudinal structural member thereof
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including a plurality of jets in the wall thereof,
  • said cutter head rotating means including a rotatable thrust bearing coupled in said suction line, to divide said suction line into a non-rotating portion connecting to said centrifugal dredge pump, and an adjacent portion rotatable with respect thereto and connecting with said cutter head by way of said jet means and said coupling means,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted 10 to be lowered to a depth below the surface of Water on which said barge may be floating,
  • said digging ladder including a pipe line as a longitudinal strutural member thereof,
  • a dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and conmeeting to said suction line, said jet pump assembly including at least one jet,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • said digging ladder including a pipe line as a longitudinal structural member thereof
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line, said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including at least one jet in the wall thereof,
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • said digging ladder being fabricated of longitudinal corner structural members including a pipe line as at least one of said structural members thereof,
  • centrifugal type dredge pump on said barge and having a suction line extending along and supported by said ladder
  • jet pump assembly carried by said ladder and connecting to said suction line
  • said jet pump assembly including jet means of generally cylindrical shape flow coupled to said suction line and including a plurality of jets in the wall thereof and a lining of nickel hardened alloy extending downstream from the lips of said jets,
  • a pressure housing affixed to said digging ladder with each said pipeline terminating therein, said pressure housing surrounding said jet means and enclosing said jets,
  • said cutter head rotating means including a rotatable thrust bearing coupled in said suction line, to divide said suction line into a non-rotating portion connecting to said centrifugal dredge pump, and an adjacent portion rotatable with respect thereto and connecting with said cutter head by way of said jet means and said coupling means.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • a dredge pump on said barge and having a suction line extending along and supported by said ladder
  • said means including a float assembly and means fixedly maintaining said float assembly at a distance from said barge, and
  • a sheave system including a winch on said barge, a sheave carried by said float assembly, and a cable from said winch, about said sheave and to said ladder.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of Water on which said barge may be floating
  • a dredge pump on said barge and having a suction line extending along and supported by said ladder
  • said means including a pair of pontoons one to either side of said ladder
  • said means including a pair of floating booms, each connected at one end to said barge and at its other end to one of said pontoons, and
  • a sheave system including a winch on said barge, a sheave on said bridge and a cable from said winch, about said sheave and to said ladder.
  • Dredging equipment comprising a barge
  • a digging ladder extending from said barge and adapted to be lowered to a depth below the surface of water on which said barge may be floating
  • a dredge pump on said barge and having a suction line extending along and supported by said ladder
  • said means including a pair of pontoons one to either side of said ladder
  • a sheave system including a winch on said barge, a sheave on said bridge and a cable from said Winch, about said sheave and to said ladder.

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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)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US211493A 1962-07-23 1962-07-23 Dredging equipment Expired - Lifetime US3152409A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL137396D NL137396C (xx) 1962-07-23
NL295628D NL295628A (xx) 1962-07-23
US211493A US3152409A (en) 1962-07-23 1962-07-23 Dredging equipment
GB25776/63A GB1000618A (en) 1962-07-23 1963-06-28 Dredging equipment
NL6705755A NL6705755A (xx) 1962-07-23 1967-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US211493A US3152409A (en) 1962-07-23 1962-07-23 Dredging equipment

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US3152409A true US3152409A (en) 1964-10-13

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US211493A Expired - Lifetime US3152409A (en) 1962-07-23 1962-07-23 Dredging equipment

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GB (1) GB1000618A (xx)
NL (3) NL6705755A (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474549A (en) * 1966-09-09 1969-10-28 Ludwig Schnell Apparatus for conveying sand or the like
US3535801A (en) * 1969-05-05 1970-10-27 Shovel Mire Inc Dredge construction
EP0045542A1 (en) * 1980-08-01 1982-02-10 H.A. Kroon Industrieel Reinigingsbedrijf B.V. Method of purifying soil polluted by oil or the like
US20090056173A1 (en) * 2005-02-22 2009-03-05 Dredging International Cutter head for dredging soil and method for dredging by means of this cutter head
EP2034096A1 (en) * 2007-09-06 2009-03-11 IHC Holland IE B.V. Suction dredger with dredging tube of variable length
US20100011627A1 (en) * 2009-06-24 2010-01-21 Richard John Phillips Dredging apparatus
BE1018278A3 (nl) * 2008-09-08 2010-08-03 Ihc Holland Ie Bv Baggerzuiger met baggerbuis met variabele lengte.
WO2012153169A1 (en) * 2011-01-21 2012-11-15 Decomar S P A Apparatus and method for the dredging of sediments from the seabed
CN103205991A (zh) * 2013-04-02 2013-07-17 王国根 河道清淤装置及其方法
US9200427B2 (en) 2012-06-20 2015-12-01 Richard John Phillips Dredging head apparatus
EP3737798A4 (en) * 2018-01-12 2021-10-27 Cashman Dredging & Marine Contracting Co., Llc DRAGUE AND BARGE ARTICULATED IN A CARROUSEL

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN108824527A (zh) * 2018-06-13 2018-11-16 佛山博发智能科技有限公司 一种河道淤泥的清理收集装置

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US632126A (en) * 1899-01-16 1899-08-29 Peter Kirk Hydraulic dredge.
US868774A (en) * 1906-02-05 1907-10-22 Thomas R Goth Dredging apparatus.
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474549A (en) * 1966-09-09 1969-10-28 Ludwig Schnell Apparatus for conveying sand or the like
US3535801A (en) * 1969-05-05 1970-10-27 Shovel Mire Inc Dredge construction
EP0045542A1 (en) * 1980-08-01 1982-02-10 H.A. Kroon Industrieel Reinigingsbedrijf B.V. Method of purifying soil polluted by oil or the like
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
US20090056173A1 (en) * 2005-02-22 2009-03-05 Dredging International Cutter head for dredging soil and method for dredging by means of this cutter head
CN101381997B (zh) * 2007-09-06 2012-09-05 Ihc荷兰Ie公司 具有可变长度采泥管的吸泥船
EP2034096A1 (en) * 2007-09-06 2009-03-11 IHC Holland IE B.V. Suction dredger with dredging tube of variable length
BE1018278A3 (nl) * 2008-09-08 2010-08-03 Ihc Holland Ie Bv Baggerzuiger met baggerbuis met variabele lengte.
US20100011627A1 (en) * 2009-06-24 2010-01-21 Richard John Phillips Dredging apparatus
US8127474B2 (en) * 2009-06-24 2012-03-06 Richard John Phillips Dredging apparatus
WO2012153169A1 (en) * 2011-01-21 2012-11-15 Decomar S P A Apparatus and method for the dredging of sediments from the seabed
US9587372B2 (en) 2011-01-21 2017-03-07 Decomar S.P.A. Apparatus for the dredging of sediments from the seabed
US9200427B2 (en) 2012-06-20 2015-12-01 Richard John Phillips Dredging head apparatus
CN103205991A (zh) * 2013-04-02 2013-07-17 王国根 河道清淤装置及其方法
EP3737798A4 (en) * 2018-01-12 2021-10-27 Cashman Dredging & Marine Contracting Co., Llc DRAGUE AND BARGE ARTICULATED IN A CARROUSEL

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Publication number Publication date
NL295628A (xx)
GB1000618A (en) 1965-08-11
NL6705755A (xx) 1967-07-25
NL137396C (xx)

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