EP0404273B1 - Vessel with unloading device - Google Patents
Vessel with unloading device Download PDFInfo
- Publication number
- EP0404273B1 EP0404273B1 EP90201693A EP90201693A EP0404273B1 EP 0404273 B1 EP0404273 B1 EP 0404273B1 EP 90201693 A EP90201693 A EP 90201693A EP 90201693 A EP90201693 A EP 90201693A EP 0404273 B1 EP0404273 B1 EP 0404273B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grab
- hold
- vessel
- chassis
- hoisting
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/22—Arrangement of ship-based loading or unloading equipment for cargo or passengers of conveyers, e.g. of endless-belt or screw-type
Definitions
- the invention relates to a vessel comprising a hold for bulk material and an unloading device.
- a vessel is disclosed in GB-A-19 425 - A.D. 1909 and in DE-A-2 144 865.
- the invention provides a vessel of the type mentioned in the preamble which has the feature that the unloading device comprises a chassis movable in lengthwise direction of the hold and guided by means of rails, which chassis bears via hoisting means a grab which has a length which is greater than half the breadth of the hold.
- the cargo can be removed per layer in parallel bites.
- the following layer then presents itself as uniform, parallel transverse waves which allow of easy taking up by the grab. This manner of unloading furthermore lends itself well to an automatic process because of the regular presentation of material.
- the invention also relates to and provides a method as formulated in claim 8.
- the vessel 1 comprises a hold 2 for receiving bulk material 3, in particular gravel, although sand, coal, grain and other bulk materials are also conceivable.
- the vessel 1 has an unloading device 4 comprising a chassis 5 which is guided along rails 6 in lengthwise direction of the hold 2.
- the wheels 7 are driven by electromotors or hydromotors (not drawn).
- a hoisting frame 8 is connected pivotally to the chassis 5 about a horizontal axis 9 and is swivelled with hydraulic cylinders 10 between a grabbing position drawn in fig. 3 with full lines and a release position drawn in fig. 3 with dashed lines.
- the grab 15 has a length k which is greater than half the breadth 1/2 b of the hold 2.
- k is greater than 1/2 b , preferably greater than 3/4 b and for example at least 6/7 b .
- the grab 15 is located above receiving means 16 arranged on the chassis 5 consisting of an elongate trough 17 positioned transversely to the hold 2 which debouches onto a cross conveyor 18 which discharges the material via a discharge chute 19 onto a lengthwise conveyor 20 disposed alongside the hold.
- this discharge conveyor 21 is swivelled on board about a shaft 23 into the position drawn in fig. 1 with dashed lines and then rests on a support 24.
- An upper beam 25 of the grab 15 bears a number of ultrasonic pick-ups 26 which signal when the distance of the opened grab 15 to the material 3 has reached a certain minimum distance.
- the grab 15 is suspended on four cables 14 arranged at a considerable mutual distance the grab 15 remains properly positioned in transverse direction of the hold 2.
- the material 3 is picked up from the hold 2 in layers wherein an elongate bite 28 extending in a transverse direction is picked up each time, which bite has a part cylinder-shaped bottom surface 29 and two part cylinder-shaped upper surfaces 30.
- the grab 15 has a well-presented bite to handle with each following layer because the chassis 5, and therewith the biting grab 15, is disposed each time staggered a half bite 28 relative to the previous layer.
- the unloading method controlled by a computer, is carried out automatically.
- the chassis 5 is hereby displaced each time a bite breadth c after each bite 28 and in each case only one bite 28 is taken up and unloaded above the receiving means 16. After taking the bite 28, during the raising thereof and during the swivelling of the hoisting frame 8, the chassis 8 is already being moved a step in the length of the bite breadth c so that the opened grab 15 immediately comes to lie at the correct position for the following bite 28.
- the reciprocal swivelling of the hoisting frame 8 also takes place automatically. Paying out of the closing and hoisting cables is stopped at the correct moment by the ultrasonic pick-ups 26. The end of the layer is signalled by limit switches (not drawn) on the chassis when the head end walls 38 of the hold 2 are approached.
- the chassis 5 is displaced a half bite breadth c back at the first bite 28 from a following layer.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Control And Safety Of Cranes (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Refuse Receptacles (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Description
- The invention relates to a vessel comprising a hold for bulk material and an unloading device. Such a vessel is disclosed in GB-A-19 425 - A.D. 1909 and in DE-A-2 144 865.
- With vessels it is important that they are unloaded as quickly as possible. To this end the invention provides a vessel of the type mentioned in the preamble which has the feature that the unloading device comprises a chassis movable in lengthwise direction of the hold and guided by means of rails, which chassis bears via hoisting means a grab which has a length which is greater than half the breadth of the hold.
- The cargo can be removed per layer in parallel bites. The following layer then presents itself as uniform, parallel transverse waves which allow of easy taking up by the grab. This manner of unloading furthermore lends itself well to an automatic process because of the regular presentation of material.
- From US-A-3 362 546 a barge unloading device is known having in stead of a grab three digging rotors, which together have a breadth which is substantially equal to the breadth of the hold. This unloading device does not form part of the vessel, which means that a vessel can only be unloaded at the location comprising such unloading device.
- The invention also relates to and provides a method as formulated in
claim 8. - Mentioned and other features of the invention will be elucidated in the description following hereinafter with reference to a drawing, in which:
- fig. 1 shows a perspective view of a preferred embodiment of a vessel according to the invention;
- fig. 2 shows on a larger scale portion II from fig. 1;
- fig. 3 shows on a larger scale portion III from fig. 2; and
- fig. 4 shows on a larger scale portion IV from fig. 2.
- The vessel 1 comprises a
hold 2 for receivingbulk material 3, in particular gravel, although sand, coal, grain and other bulk materials are also conceivable. The vessel 1 has an unloading device 4 comprising achassis 5 which is guided alongrails 6 in lengthwise direction of thehold 2. The wheels 7 are driven by electromotors or hydromotors (not drawn). A hoistingframe 8 is connected pivotally to thechassis 5 about a horizontal axis 9 and is swivelled with hydraulic cylinders 10 between a grabbing position drawn in fig. 3 with full lines and a release position drawn in fig. 3 with dashed lines. - In the grabbing position the
winches closing cables 13 and the hoisting cables 14 suspended at the upper end of the hoisting frame are located at the side of thechassis 5 so that thegrab 15 suspended thereon can be lowered into thehold 2. Thegrab 15 has a length k which is greater than half the breadth 1/2 b of thehold 2. Example: b = 7m and k = 6m. In any case k is greater than 1/2 b, preferably greater than 3/4 b and for example at least 6/7 b. - In the release position the
grab 15 is located above receivingmeans 16 arranged on thechassis 5 consisting of anelongate trough 17 positioned transversely to thehold 2 which debouches onto across conveyor 18 which discharges the material via adischarge chute 19 onto alengthwise conveyor 20 disposed alongside the hold. This pours the material via adischarge chute 22 onto an outboard transportingdischarge conveyor 21 for carrying the material ashore. During passage thisdischarge conveyor 21 is swivelled on board about ashaft 23 into the position drawn in fig. 1 with dashed lines and then rests on asupport 24. - An
upper beam 25 of thegrab 15 bears a number of ultrasonic pick-ups 26 which signal when the distance of the openedgrab 15 to thematerial 3 has reached a certain minimum distance. - Because the
grab 15 is suspended on four cables 14 arranged at a considerable mutual distance thegrab 15 remains properly positioned in transverse direction of thehold 2. - The
material 3 is picked up from thehold 2 in layers wherein anelongate bite 28 extending in a transverse direction is picked up each time, which bite has a part cylinder-shaped bottom surface 29 and two part cylinder-shapedupper surfaces 30. Thegrab 15 has a well-presented bite to handle with each following layer because thechassis 5, and therewith thebiting grab 15, is disposed each time staggered ahalf bite 28 relative to the previous layer. The unloading method, controlled by a computer, is carried out automatically. - The
chassis 5 is hereby displaced each time a bite breadth c after eachbite 28 and in each case only onebite 28 is taken up and unloaded above thereceiving means 16. After taking thebite 28, during the raising thereof and during the swivelling of the hoistingframe 8, thechassis 8 is already being moved a step in the length of the bite breadth c so that the openedgrab 15 immediately comes to lie at the correct position for the followingbite 28. - The reciprocal swivelling of the hoisting
frame 8 also takes place automatically. Paying out of the closing and hoisting cables is stopped at the correct moment by the ultrasonic pick-ups 26. The end of the layer is signalled by limit switches (not drawn) on the chassis when thehead end walls 38 of thehold 2 are approached. - At the end of a layer the
chassis 5 is displaced a half bite breadth c back at thefirst bite 28 from a following layer.
Claims (10)
- Vessel (1), comprising a hold (2) for bulk material (3) and an unloading device (4), characterized in that the unloading device (4) comprises a chassis (5) displaceable in lengthwise direction of the hold (2) and guided by means of rails (6), which chassis via hoisting means (11, 12, 13, 14) bears a grab (15) which has a length (k) which is greater than half the breadth (b) of the hold (2).
- Vessel (1) as claimed in claim 1, characterized in that the grab (15) is suspended on a hoisting frame (8) which is connected to the chassis (5) for pivoting about a horizontal axis (9) and can be swivelled between a grabbing position wherein the grab (15) can be lowered at the side of the chassis (5) into the hold (2) and a release position wherein the grab (15) is located above receiving means (16) arranged on the chassis (5).
- Vessel (1) as claimed in claim 1 or 2, characterized in that the grab (15) is suspended on a hoisting frame (8) by means of at least two hoisting cables (14) disposed at a considerable mutual distance in lengthwise direction of the grab (15) and at least two closing cables (13).
- Vessel (1) as claimed in any of the foregoing claims, characterized in that the grab frame (25) is provided with at least one ultrasonic material pick-up (26) for determining the distance of the grab (15) to the material (3) present in the hold (2).
- Vessel (1) as claimed in any of the foregoing claims, characterized in that the collecting means (16) comprise a cross conveyor (18) which transports material (3) onto a lengthwise conveyor (20) arranged at the side of the vessel (1) and that the lengthwise conveyor (20) discharges the material (3) onto a discharge conveyor (21) to be carried outboard.
- Vessel (1) as claimed in any of the foregoing claims, characterized by a computer which controls the unloading process, in particular the step-wise movement of the chassis (5), the swivelling movement of the hoisting frame (8), the descending and lifting movement of the grab (15) and the opening and closing movement of the grab (15).
- Vessel (1) as claimed in any of the foregoing claims, characterized in that the winches (11, 12) of the hoisting and closing cables (13, 14) and/or the wheels of the chassis (5) are driven by electro- or hydromotors.
- Method for unloading the hold (2), characterized in that the material (3) is removed in layers in parallel transverse bites (28) of a length (k) which is greater than half the breadth (b) of the hold (2).
- Method as claimed in claim 8, characterized in that the unloading takes place automatically controlled.
- Method as claimed in claim 8 or 9, characterized in that the hold (2) is emptied with a grab (15) the length (k) whereof is greater than 3/4 of the breadth (b) of the hold.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8901691 | 1989-07-03 | ||
NL8901691A NL8901691A (en) | 1989-07-03 | 1989-07-03 | VESSEL WITH UNLOADING EQUIPMENT. |
SG28894A SG28894G (en) | 1989-07-03 | 1994-02-23 | Vessel with unloading device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0404273A1 EP0404273A1 (en) | 1990-12-27 |
EP0404273B1 true EP0404273B1 (en) | 1992-11-11 |
Family
ID=26646550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90201693A Expired EP0404273B1 (en) | 1989-07-03 | 1990-06-26 | Vessel with unloading device |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0404273B1 (en) |
DE (1) | DE69000455T2 (en) |
DK (1) | DK0404273T3 (en) |
ES (1) | ES2035700T3 (en) |
HK (1) | HK35994A (en) |
NL (1) | NL8901691A (en) |
SG (1) | SG28894G (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH075116B2 (en) * | 1992-05-29 | 1995-01-25 | 小松ドレッジシステム株式会社 | Ship tank unloading device |
BE1006205A3 (en) * | 1992-09-23 | 1994-06-07 | Nagron Mech Handling | Method for discharging a room and a device for carrying out this process. |
EP2184407A1 (en) * | 2008-11-06 | 2010-05-12 | Spauwer Dredging BV | Suction Dredger |
CN116281267B (en) * | 2023-01-20 | 2023-12-05 | 山东开元重型机械有限公司 | Two-way bucket wheel ship unloader |
CN117698929B (en) * | 2024-02-05 | 2024-04-19 | 安徽建筑大学 | Transportation ship with hoisting function |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190919425A (en) * | 1909-08-24 | 1910-08-18 | James Edwin Richards | A New or Improved Loading and Un-loading Device for Ships and the like. |
US3362546A (en) * | 1965-11-24 | 1968-01-09 | Atkinson Guy F Co | Barge unloading device |
DE2144865A1 (en) * | 1971-09-08 | 1973-03-15 | Krupp Gmbh | BULK GOODS SHIP WITH AN UNLOADING DEVICE |
-
1989
- 1989-07-03 NL NL8901691A patent/NL8901691A/en not_active Application Discontinuation
-
1990
- 1990-06-26 ES ES199090201693T patent/ES2035700T3/en not_active Expired - Lifetime
- 1990-06-26 DE DE9090201693T patent/DE69000455T2/en not_active Expired - Fee Related
- 1990-06-26 EP EP90201693A patent/EP0404273B1/en not_active Expired
- 1990-06-26 DK DK90201693.0T patent/DK0404273T3/en active
-
1994
- 1994-02-23 SG SG28894A patent/SG28894G/en unknown
- 1994-04-14 HK HK35994A patent/HK35994A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0404273A1 (en) | 1990-12-27 |
DE69000455D1 (en) | 1992-12-17 |
NL8901691A (en) | 1991-02-01 |
DK0404273T3 (en) | 1993-01-25 |
DE69000455T2 (en) | 1993-06-09 |
ES2035700T3 (en) | 1993-04-16 |
HK35994A (en) | 1994-04-22 |
SG28894G (en) | 1994-11-25 |
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