EP2383394A1 - Laserschneider-Saugbagger - Google Patents

Laserschneider-Saugbagger Download PDF

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Publication number
EP2383394A1
EP2383394A1 EP10161424A EP10161424A EP2383394A1 EP 2383394 A1 EP2383394 A1 EP 2383394A1 EP 10161424 A EP10161424 A EP 10161424A EP 10161424 A EP10161424 A EP 10161424A EP 2383394 A1 EP2383394 A1 EP 2383394A1
Authority
EP
European Patent Office
Prior art keywords
cutter
laser
track
head
suction
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.)
Withdrawn
Application number
EP10161424A
Other languages
English (en)
French (fr)
Inventor
Aart Van den Dool
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.)
Castart BV
Original Assignee
Castart BV
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 Castart BV filed Critical Castart BV
Priority to EP10161424A priority Critical patent/EP2383394A1/de
Priority to PCT/EP2011/054938 priority patent/WO2011134733A1/en
Publication of EP2383394A1 publication Critical patent/EP2383394A1/de
Withdrawn legal-status Critical Current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
    • E02F3/8883—Using the force of explosions, e.g. by the use of internal combustion engines
    • 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
    • E02F3/8875—Submerged units pulled or pushed
    • 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
    • E02F3/9243—Passive suction heads with no mechanical cutting means
    • E02F3/925—Passive suction heads with no mechanical cutting means with jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for

Definitions

  • the invention relates to a cutter suction dredger. Dredging is an excavation operation performed underwater. The purpose is to collect bottom sediments and transport them to another location. This is often used to keep waterways at required depths, to build new harbors or to replenish the sand on beaches.
  • bottom sediment If the bottom sediment is already lose it can easily be sucked by a suction dredger. However, if a more rocky bottom is to be excavated, the bottom needs to be cut into pieces, before the bottom pieces can be transported.
  • Cutter suction dredgers operate by swinging the suction tube with cutter head over the bottom. The swinging action is achieved by using winches and cables.
  • cutter suction dredgers A disadvantage of cutter suction dredgers is, that the cutting element are subjected to severe wear and need to be replaced often. This requires to lift the cutter head out of the water. Another disadvantage is that the cutter arm has to be constructed as heavy and as stiff as possible. The weight of the cutter arm will help the cutter teeth to loosen the rock. The overall construction and maintenance costs of cutters is very expensive.
  • Another known technique to loosen the bottom is to drill holes in the bottom and insert explosives. After the explosion, the loose parts can be dredged with a common suction dredger. However, introducing explosive is a time consuming job.
  • CA 2576756 discloses the use of a laser beam to locally heat the rocks of the bottom. Then the rocks are suddenly cooled by the surrounding water, which causes cracks in the rock and loosens the rock. Afterwards, the loosened rock can be sucked away with a common suction dredger.
  • a limitation of using a laser beam is that the laser beam needs to be pointed at a single location for a certain time to have the rock heated sufficiently to get a reliable thermo shock effect. This is not a problem when drilling an oil well. However, when scanning the bottom surface when dredging, this laser beam method from the prior art cannot be used as the laser beam is not kept at a single position long enough to get the desired thermo shock effect.
  • a cutter suction dredger comprising a suction tube with a cutter head, wherein the cutter head comprises:
  • the continuous track provided for a stable base at the bottom. From this stable base, the laser head can be easily directed at a single point of the bottom in order to heat the specific bottom portion.
  • the laser head As the laser head is arranged at the track, the laser head will be stationary relative to the bottom, as long as the part of the track with the laser head is in contact with the bottom.
  • a guide rails is arranged near the continuous track, wherein the laser head is pivotably arranged to the continuous track and wherein the laser head is guided in the guide rails to keep the laser beam directed to the bottom surface.
  • cutter suction dredger comprises a vessel to which the suction tube is arranged, a laser beam generating device arranged at the vessel and a glass fiber for directing the generated laser beam to the laser head at the track.
  • a laser beam generating device is generally quite expensive especially when a high power laser beam is desired.
  • the device By arranging the laser beam generating device on the vessel, the device is arranged in an environment which can rather easily be controlled.
  • the generated laser beam is then guided by an optical fiber to the tip of the cutter head to emit the generated laser beam close to the bottom. Any filtering of the surrounding water is herewith minimized.
  • the continuous track comprises a number of links and the at least one laser head is arranged to a link of the continuous track.
  • a number of laser heads can be arranged at this way to a number of links of the continuous track.
  • the suction mouth of the suction tube is arranged downstream of the continuous track.
  • the downstream arranged suction mouth will clean up the loose parts and transport them to a desired location.
  • the cutter suction dredger of the invention it is also possible to construct a drag head for a hopper dredger provided with the laser cutter head. Because it is no longer necessary to put force on the cutter head/cutter teeth there is no need for a heavy cutter arm and even a hopper can do the same job as a cutter. Due to the much longer arms of hoppers one can even cutter much deeper as before.
  • a vessel 1 is shown having a hull 2.
  • the bridge 6 for controlling the vessel 1 is arranged on top of the deck 5.
  • a suction tube 7 with a suction mouth 9 is arranged on the side of the hull 2 .
  • the suction tub 7 can be lifted up beside the hull 2 for transportation.
  • the suction tube 7 is used for collecting loose pieces from the bottom.
  • a laser cutter 10 Stream upward from the suction mouth 9, in the direction of the arrow M, a laser cutter 10 is arranged.
  • This laser cutter 10 has two parallel continuous tracks 11, 12. In between the two tracks 11, 12 laser heads 13 are arranged. These laser heads 13 are provided with a laser beam by a optical fiber cable 14. The laser beam is generated by a laser beam generating device 15, which is placed on the deck of hull 2.
  • FIG. 2 shows a schematic cross sectional view of the laser cutter 10.
  • the continuous track 11 is build out of a number of links 16.
  • laser heads 13 are arranged. These laser heads 13 are shielded by a shield 17 to minimize influences from outside.
  • a guide rail 18 is arranged, shown schematically. A top part of the laser head 13 is guided in this guide rail 18, which keeps the head 13 in the correct position along the whole track 11.
  • FIG 3 a hopper dredger 20 according to the invention is shown.
  • the dredger 20 is pulled along the bottom 21.
  • the dredger 20 has a continuous track 22 with links 23. Behind the continuous track 22 a suction mouth 24 is arranged to collect the rock particles.
  • Figure 4 shows a detail of a link 23 of the continuous track 22 of figure 3 .
  • the link 23 has a U-shaped frame in which two nozzles 25 are arranged.
  • Each nozzle 25 has a center channel 26, in which an optic fiber 27 is arranged.
  • a second channel 28 Concentric to the center channel 26 a second channel 28 is arranged, which is supplied with fluid from a main pipe 29.
  • This fluid preferably water, is pressurized such that a powerfull jet is created around the laser beam emitted from the optic fiber 27 through the center channel 26.
  • the advantage of using a hopper dredger is that the arms are substantially longer, such that the cutting action can be performed at lager depths.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Laser Beam Processing (AREA)
EP10161424A 2010-04-29 2010-04-29 Laserschneider-Saugbagger Withdrawn EP2383394A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10161424A EP2383394A1 (de) 2010-04-29 2010-04-29 Laserschneider-Saugbagger
PCT/EP2011/054938 WO2011134733A1 (en) 2010-04-29 2011-03-30 Laser cutter suction dredger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10161424A EP2383394A1 (de) 2010-04-29 2010-04-29 Laserschneider-Saugbagger

Publications (1)

Publication Number Publication Date
EP2383394A1 true EP2383394A1 (de) 2011-11-02

Family

ID=42309511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161424A Withdrawn EP2383394A1 (de) 2010-04-29 2010-04-29 Laserschneider-Saugbagger

Country Status (2)

Country Link
EP (1) EP2383394A1 (de)
WO (1) WO2011134733A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100537A (zh) * 2012-12-25 2013-05-15 江苏大学 一种水下激光清洗方法及清洗头
CN104032788A (zh) * 2014-06-30 2014-09-10 程金强 一种河道清淤机
CN104963369A (zh) * 2015-06-05 2015-10-07 长江南京航道工程局 一种用于提高绞吸式挖泥船挖泥效率的控制系统及其控制方法
CN106049660A (zh) * 2016-08-01 2016-10-26 长江勘测规划设计研究有限责任公司 无需中断通水的小污染低成本倒虹吸管清淤装置及方法
CN106157778A (zh) * 2016-07-12 2016-11-23 武汉理工大学 疏浚作业模拟装置
CN111197328A (zh) * 2020-03-03 2020-05-26 无锡东方船研水环境科技有限公司 一种带水刀射流式水底污染物清除装置
CN111677034A (zh) * 2020-06-21 2020-09-18 尼旭东 一种水利工程用可调节清淤设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014005737B3 (de) * 2014-04-16 2015-09-17 Georg Linner Vorrichtung zum Aufnehmen und Entfernen von auf Gewässerböden abgelagerten plastischen, schlammartigen Stoffen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2067797A5 (de) * 1969-11-10 1971-08-20 Deepsea Ventures Inc
US3729137A (en) * 1971-04-12 1973-04-24 Caterpillar Tractor Co Mechanically actuated water cannon
DE2938448A1 (de) * 1979-09-22 1981-04-09 Fried. Krupp Gmbh, 4300 Essen Einrichtung zum gutabbau vom grund eines gewaessers
CA2576756A1 (en) 2005-04-27 2006-11-09 Japan Drilling Co., Ltd. Method and device for excavating submerged stratum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2067797A5 (de) * 1969-11-10 1971-08-20 Deepsea Ventures Inc
US3729137A (en) * 1971-04-12 1973-04-24 Caterpillar Tractor Co Mechanically actuated water cannon
DE2938448A1 (de) * 1979-09-22 1981-04-09 Fried. Krupp Gmbh, 4300 Essen Einrichtung zum gutabbau vom grund eines gewaessers
CA2576756A1 (en) 2005-04-27 2006-11-09 Japan Drilling Co., Ltd. Method and device for excavating submerged stratum
US20090126235A1 (en) * 2005-04-27 2009-05-21 Japan Drilling Co., Ltd. Method and device for excavating submerged stratum

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103100537A (zh) * 2012-12-25 2013-05-15 江苏大学 一种水下激光清洗方法及清洗头
CN103100537B (zh) * 2012-12-25 2014-12-03 江苏大学 一种水下激光清洗方法及清洗头
CN104032788A (zh) * 2014-06-30 2014-09-10 程金强 一种河道清淤机
CN104963369A (zh) * 2015-06-05 2015-10-07 长江南京航道工程局 一种用于提高绞吸式挖泥船挖泥效率的控制系统及其控制方法
CN104963369B (zh) * 2015-06-05 2017-08-11 长江南京航道工程局 一种用于提高绞吸式挖泥船挖泥效率的控制系统及其控制方法
CN106157778A (zh) * 2016-07-12 2016-11-23 武汉理工大学 疏浚作业模拟装置
CN106157778B (zh) * 2016-07-12 2019-01-22 武汉理工大学 疏浚作业模拟装置
CN106049660A (zh) * 2016-08-01 2016-10-26 长江勘测规划设计研究有限责任公司 无需中断通水的小污染低成本倒虹吸管清淤装置及方法
CN111197328A (zh) * 2020-03-03 2020-05-26 无锡东方船研水环境科技有限公司 一种带水刀射流式水底污染物清除装置
CN111677034A (zh) * 2020-06-21 2020-09-18 尼旭东 一种水利工程用可调节清淤设备

Also Published As

Publication number Publication date
WO2011134733A1 (en) 2011-11-03

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