EP0427013B1 - Schwimmbagger - Google Patents

Schwimmbagger Download PDF

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Publication number
EP0427013B1
EP0427013B1 EP90119799A EP90119799A EP0427013B1 EP 0427013 B1 EP0427013 B1 EP 0427013B1 EP 90119799 A EP90119799 A EP 90119799A EP 90119799 A EP90119799 A EP 90119799A EP 0427013 B1 EP0427013 B1 EP 0427013B1
Authority
EP
European Patent Office
Prior art keywords
gripper
grippers
rope
floating
dredger according
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
EP90119799A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0427013A1 (de
Inventor
Wolfgang Rohr
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.)
Rohr GmbH
Original Assignee
Rohr GmbH
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 Rohr GmbH filed Critical Rohr GmbH
Publication of EP0427013A1 publication Critical patent/EP0427013A1/de
Application granted granted Critical
Publication of EP0427013B1 publication Critical patent/EP0427013B1/de
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
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/02—Conveying equipment mounted on a dredger
    • E02F7/023—Conveying equipment mounted on a dredger mounted on a floating dredger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/62—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes for actuating grab buckets

Definitions

  • the invention relates to a dredger with a floating body, on which a scaffold is arranged, which is provided with a lifting mechanism, which has two grippers with its own opening and closing mechanism, e.g. drives a motor-hydraulic gripper in an opposite movement.
  • Dredgers are known in which the gripper's own weight is eliminated by the arrangement of counterweights. The disadvantage, however, is that the counterweight has to be moved up and down mechanically. Furthermore, moving the counterweights does not bring any additional funding capacity. Dredgers are also known (DE 36 16 287 A1), in which two grippers are driven in the opposite direction to lifting and lowering movements. These grabs are operated by mechanically coupled hoists, but this is not functional if there are different excavator depths and thus there is no need to compensate for the dead load in some areas. This means that the drives must be designed as usual.
  • the object of the invention is to design a dredger of the type mentioned at the outset in such a way that a different excavator depth resulting from the different slope tendency and possibly slipping material is compensated for by turning off the grab weight.
  • At least one driven traction sheave is provided as the hoist, that the hoist rope is guided over the traction sheave and the grippers provided with rope pulleys and that the hoist rope ends each have one Balancing winches are held, which produce the rope compensation for different excavator depths.
  • An advantageous embodiment provides that the upper end point of a gripper can be detected via limit switches or light barriers.
  • the lower end point of the gripper can be detected by means of initiators, load cells, pressure cells, strain gauges, standstill motors and the like.
  • the lifting rope be guided over rope deflection rollers in order to increase the distance between the grippers.
  • An advantageous embodiment provides that the traction sheave is arranged on the floating body, while the compensating winches and the rope deflection rollers are attached to the scaffold.
  • Another embodiment provides that a movable chute or a bunker wagon can be brought under the grippers in the upper end position.
  • the invention has the advantage that the gripper's own weight is excluded by the two oppositely connected grippers, so that a higher delivery rate can be achieved. With the drive power used for one gripper, two grippers can now be driven. In addition, the energy saving increases by eliminating the dead load. Instead of the previous complex hoists, a simple drive via one or more traction sheaves is possible. The use of such traction sheaves results in significantly less rope wear. According to the invention can be simple means to achieve a depth compensation to adapt to different excavator depths.
  • the drive shown in the drawings is arranged on a dredger with a floating body, namely on a scaffold 1 at a corresponding height above the floating body.
  • a traction sheave 2 which is driven by a motor 3 with a gear 4, serves as the main drive.
  • a lifting rope 5 runs over this traction sheave 2, which is designed as a rope or pulley, on which two grippers 6, 7 are suspended from rope pulleys 8.
  • Each rope end is attached to a balancing winch 9 and 10 and can be wound up.
  • the two grippers 6, 7 are driven in opposite directions by the traction sheave 2.
  • Each balancing winch is provided with a drive motor 11 with gear 12.
  • FIG. 3 shows an embodiment with two traction sheaves 2.
  • Each hoisting rope 5 is guided to the compensating winches 9, 10 via the gripper suspension 8. If several traction sheaves 2 are used, the coefficient of friction and braking is increased, the traction sheaves can be dimensioned smaller and also the hoist rope diameter.
  • Fig. 4 shows the position of the grippers 6, 7 in which the gripper 6 has the upper end point 13, i.e. has not yet reached the emptying position.
  • the gripper 7, however, has the lower end point 14, i.e. not fully reached the bottom.
  • the leveling winch 10 now has the task of compensating for the respective change in the excavator depth, i.e. the compensating winch 10 raises the gripper 7 until the gripper 6 has reached the upper end point 13 with the aid of the traction sheave drive. Only then does the opened gripper 7 touch down on the floor 14 with the help of the winch 10 now working in opposite directions and begins to grip.
  • the gripper 7 has already reached the upper end point 13, while the open gripper 6 located in the water is still arranged above the seabed 14.
  • the balancing winch 9 gives way to the hoist rope until the gripper 6 sits on the ground and begins to grip.
  • the gripper 7 is buried in the lake bed 15.
  • the gripper 6 is located at its upper end point 13.
  • the drive of the traction sheave 2 can be equipped for pure gripper lifting operation, ie with a drive power that is precisely necessary for the low and normal power requirement.
  • the balancing winch 10 can be used to pull out the stuck gripper 7, which then operates at a low speed and correspondingly lower installed power. 5, the gripper 7 is pulled out with the aid of the compensating winch 10.
  • the drive of the traction sheave 2 can also be used to increase the breakaway force.
  • the gripper 7 is spilled and the gripper 6 is supported at the upper end point 13 by means of a holder 16.
  • the gripper 7 can thus be recovered via two compensating winches 9, 10.
  • the drive of the traction sheave 2 can also be used here to increase the breakaway force.
  • the gripper 7 can be dredged with the help of the other gripper 6 by the gripper 6 operating at a slow speed via the compensating winch 9.
  • FIG. 9 shows a possibility for controlling the excavator sequence, the gripper 7 being in the upper end position 13 and being switched off via a rocker 17 with a touch limit switch 18.
  • a light barrier can also be provided.
  • the other gripper 6 is controlled via a depth shutdown when the lower end point is reached, for example an initiator 19 being provided.
  • the shutdown can also be carried out by other known devices, such as load cells, pressure cells, strain gauges or a standstill motor. Shutdown devices such as those described in DE-OS 35 36 472 are also suitable are.
  • the upper and lower shutdown devices, each shown only in the drawings, are provided for both grippers 6, 7.
  • the gripper 6 has not yet reached the seabed 14, so that there is no message from the depth shutdown.
  • the balancing winch 9 therefore releases as much hoist rope 5 until the gripper 6 is seated and can carry out the digging process.
  • the gripper 6 already touches the sea floor 14 while the gripper 7 has not yet reached its upper end position 13.
  • the depth shutdown of the balancing winch 9 gives the command to catch up with the gripper 6 until the gripper 7 has reached its end position.
  • the gripper 6 can then initiate the excavation process.
  • the entire drive technology can be carried out with the well-known slip ring rotor system in combination with a programmable logic controller, with regulated or unregulated DC motors or with frequency-controlled squirrel-cage motors.
  • the latter two systems can also be equipped with computers, so that a fine-tuned control of all movements is guaranteed.
  • sounder systems for function and control can also be integrated into the electrical control system.
  • FIG. 11 For conveying the excavated gravel, it is expedient (FIG. 11) to arrange a movable chute 20 below the filled gripper 7, which brings the material to a material silo 21.
  • This silo 21 can be followed by a drainage device 22, which feeds the material to a material conveyor 23.
  • a movable bunker wagon 24 can be located below the filled gripper 7 be arranged (Fig. 12) or the material can be loaded directly onto slides 25 in ships 26 (Fig. 13).
  • FIG 14 shows an embodiment in which the two grippers 6, 7 are arranged at a greater distance from one another.
  • the traction sheave drive 2, 3, 4 is arranged on a trestle frame 27 and the hoisting rope 5 is guided over additional rope deflection rollers 28, which results in a correspondingly greater distance with excavator points 29 and 30 between the two grippers 6, 7.
  • the traction sheave drive 2, 3, 4 is arranged on the floating body 31, while the compensating winches 9, 10 are attached to the frame 1.
  • rope deflection rollers 28 are again provided, which are arranged on the frame 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Artificial Fish Reefs (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Operation Control Of Excavators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Jib Cranes (AREA)
  • Shovels (AREA)
EP90119799A 1989-11-09 1990-10-16 Schwimmbagger Expired - Lifetime EP0427013B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3937317 1989-11-09
DE3937317A DE3937317C1 (ru) 1989-11-09 1989-11-09

Publications (2)

Publication Number Publication Date
EP0427013A1 EP0427013A1 (de) 1991-05-15
EP0427013B1 true EP0427013B1 (de) 1992-12-09

Family

ID=6393195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119799A Expired - Lifetime EP0427013B1 (de) 1989-11-09 1990-10-16 Schwimmbagger

Country Status (13)

Country Link
US (1) US5179793A (ru)
EP (1) EP0427013B1 (ru)
JP (1) JP2688536B2 (ru)
AT (1) ATE83279T1 (ru)
AU (1) AU628233B2 (ru)
CA (1) CA2028917C (ru)
DE (2) DE3937317C1 (ru)
DK (1) DK0427013T3 (ru)
ES (1) ES2036389T3 (ru)
GE (1) GEP19970811B (ru)
GR (1) GR3007097T3 (ru)
RU (1) RU1838510C (ru)
UA (1) UA15736A (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501887A (zh) * 2020-05-13 2020-08-07 杭州绪原科技有限公司 一种水下淤泥清理小车

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9207647U1 (de) * 1992-06-05 1992-08-27 Rohr GmbH, 6701 Otterstadt Schwimmgreifer für die Beladung von Kiesschiffen oder Klappschuten
BE1006205A3 (nl) * 1992-09-23 1994-06-07 Nagron Mech Handling Werkwijze voor het lossen van een ruimte en inrichting voor het uitvoeren van deze werkwijze.
US5588536A (en) * 1995-03-13 1996-12-31 Rohr; Jochen Dredge with bi-directional grizzly
DE19900279C1 (de) * 1999-01-07 2001-02-01 Wolfgang Rohr Verfahren und Vorrichtung zur Rückgewinnung von Feinsand von einem schwimmenden Gewinnungsgerät
RO119637B1 (ro) * 2002-06-03 2005-01-28 Petru Baciu Procedeu şi instalaţie de extragere a gazului metan de pe fundul mării
US7291244B2 (en) * 2003-09-29 2007-11-06 Weyerhaeuser Company Pulp flaker
US7546880B2 (en) * 2006-12-12 2009-06-16 The University Of Tulsa Extracting gas hydrates from marine sediments
GB2456626B (en) * 2008-12-24 2009-12-23 Inchplate Ltd Winching apparatus and method
DE102009006460A1 (de) * 2009-01-28 2010-07-29 Horst Beyer Verfahren und Vorrichtung zum Transport einer Last
CN102409712B (zh) * 2011-10-21 2013-07-17 浙江省疏浚工程股份有限公司 一种抛泥筑堤船
CN105157749A (zh) * 2015-08-05 2015-12-16 南通力威机械有限公司 一种摩擦式绞车专用传感器装置
IT201900007839A1 (it) * 2019-06-03 2020-12-03 Bartolomeo Mongiardino Sistema per il dragaggio dei fondali sommersi

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE614477C (de) * 1933-04-09 1935-06-08 E H Heinrich Aumund Dr Ing Treibscheibenantrieb mit Aussenantrieb
CH407466A (de) * 1963-08-12 1966-02-15 Mohr & Federhaff Ag Selbsttätig gesteuerter Greiferkran
DE2063968A1 (de) * 1970-12-28 1972-07-13 Schnell, Ludwig Lorenz, 7081 Aufhausen Vorrichtung zum Fördern von Sand, Kies oder anderen Schüttgüten
DE2262920A1 (de) * 1972-12-22 1974-06-27 Weser Ag Schwimmender bagger zur gewinnung von sand und kies
US3975044A (en) * 1973-08-07 1976-08-17 Dravo Corporation Reeving system for a scissor-type clamshell bucket
US3967394A (en) * 1974-09-23 1976-07-06 Kelley Charles S Automatic grab crane
US3949498A (en) * 1974-10-30 1976-04-13 Mitsubishi Seiko Kabushiki Kaisha Grab bucket for dredging sludge
JPS5335926A (en) * 1976-09-14 1978-04-03 Mitsubishi Electric Corp Self exciting inverter control circuit
GB1596352A (en) * 1977-03-21 1981-08-26 Petroles Cie Francaise Excavation systems
JPS5565641A (en) * 1978-11-10 1980-05-17 Iseki Kaihatsu Koki:Kk Vertical hole excavator
DE3116287A1 (de) * 1981-04-24 1982-12-09 Peter 8192 Geretsried König Verfahren und vorrichtung zum verwerten von papier zu heizzwecken
EP0185859A3 (de) * 1984-12-14 1988-01-27 Rohr GmbH Schwimmbagger
DE3531792C1 (de) * 1985-03-07 1986-11-13 Rohr GmbH, 6720 Speyer Schwimmbagger
DE3536472A1 (de) * 1985-10-12 1987-04-16 Rohr Gmbh Tiefenmesseinrichtung fuer krananlagen
DE3616287A1 (de) * 1986-05-14 1987-11-19 Renneisen Wille Gmbh & Co Kg Schwimmbagger mit greifer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501887A (zh) * 2020-05-13 2020-08-07 杭州绪原科技有限公司 一种水下淤泥清理小车

Also Published As

Publication number Publication date
DE3937317C1 (ru) 1991-05-16
CA2028917C (en) 1999-01-19
DK0427013T3 (da) 1993-03-29
US5179793A (en) 1993-01-19
CA2028917A1 (en) 1991-05-10
GEP19970811B (en) 1997-02-10
JP2688536B2 (ja) 1997-12-10
AU628233B2 (en) 1992-09-10
JPH03172418A (ja) 1991-07-25
DE59000573D1 (de) 1993-01-21
ES2036389T3 (es) 1993-05-16
ATE83279T1 (de) 1992-12-15
UA15736A (ru) 1997-06-30
GR3007097T3 (ru) 1993-07-30
EP0427013A1 (de) 1991-05-15
RU1838510C (ru) 1993-08-30
AU6591190A (en) 1991-05-16

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