EP1544358A1 - Machine for use underwater - Google Patents
Machine for use underwater Download PDFInfo
- Publication number
- EP1544358A1 EP1544358A1 EP04077662A EP04077662A EP1544358A1 EP 1544358 A1 EP1544358 A1 EP 1544358A1 EP 04077662 A EP04077662 A EP 04077662A EP 04077662 A EP04077662 A EP 04077662A EP 1544358 A1 EP1544358 A1 EP 1544358A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine according
- frame
- top frame
- pin
- bottom frame
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
-
- 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
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/04—Walking gears moving the dredger forward step-by-step
- E02F9/045—Walking gears moving the dredger forward step-by-step for moving on the underwater bottom
Definitions
- the invention relates to a machine, such as a dredger for setting up on a substrate, such as the bed of a body of water, comprising a top frame and a bottom frame, each of which is provided with legs for supporting the frame concerned on the substrate, which legs of the top frame have a variable length, bearing means that allow rotational and translational movements of the top frame and bottom frame over one another, as well as drive means for rotational and/or translational movement of the top frame and the bottom frame over one another.
- a machine such as a dredger for setting up on a substrate, such as the bed of a body of water, comprising a top frame and a bottom frame, each of which is provided with legs for supporting the frame concerned on the substrate, which legs of the top frame have a variable length, bearing means that allow rotational and translational movements of the top frame and bottom frame over one another, as well as drive means for rotational and/or translational movement of the top frame and the bottom frame over one another.
- Such a machine is disclosed in GB-A 1 328 264.
- This known machine is constructed as a dredger that has a ladder mounted on the top frame with a cutting head at the free end.
- This top frame has a live ring, while the bottom frame has a linear roller track.
- the bottom ring of the live ring joined to the top frame is supported on the roller track, such that the top frame is able to execute both rotational and translational movements with respect to the bottom frame.
- the disadvantage of this known machine is that the construction thereof is complex.
- the live ring and the roller track, which are operated underwater, are, moreover, vulnerable components that have to be protected well against the ingress of water, in particular sea water.
- the aim of the invention is, therefore, to provide a machine of the abovementioned type that does not have these disadvantages. Said aim is achieved in that one of the frames has a pin and the other frame has an elongated track along which the pin can be slid and with respect to which the pin can be rotated.
- the track can comprise a slot-shaped opening in one of the frames, such that the pin protrudes with respect to, and is fixed to, the other frame, in which slot the pin is accommodated such that it can be slid and rotated.
- the slot can be defined between two longitudinal elements permanently joined to one of the frames.
- the pin can have a collar that extends over said longitudinal elements on the side thereof that faces away from the frame that has the pin. In this way the relationship between the frames is ensured in a simple manner.
- the pin is fixed to the bottom frame and the track is accommodated on the top frame.
- the bearing means comprise at least sliding bearings.
- the bottom frame can have supporting surfaces that are oriented upwards when the machine is in use, whilst the top frame can have bearing surfaces that are oriented downwards and bear on the supporting surfaces when the machine is in use.
- the supporting surfaces are made of stainless steel and the bearing surfaces of polyethylene. The water from the surroundings can then act as lubricant.
- the legs of the top frame can already be lengthened and shortened, the legs of the bottom frame can be fixed.
- both frames are provided with three legs.
- the top frame can then, for example, comprise three girders that define an equilateral or essentially equilateral triangular shape.
- the bearing surfaces are then preferably close to the comers of the top frame.
- the bottom frame can comprise three beams, one end of which, in each case, is joined to a core and the other, free end of which is oriented away from the core, which free ends are essentially equal distances apart.
- the supporting surfaces are then preferably close to the free ends of the beams.
- a dredging device such as a ladder that at one end is coupled to the top frame in a movable manner and that has dredging means, such as a dredging wheel, at the other end, can be mounted on the top frame.
- the top frame and the bottom frame can be joined to one another by at least two hydraulic piston/cylinder devices for executing the mutual translational and rotational movements of said frames.
- Fig. 1 shows a perspective view of a first embodiment of a machine according to the invention.
- Fig. 2 shows, diagrammatically, a plan view of the machine in Fig. 1.
- Figs 3A-F show, diagrammatically, successive positions when moving the two frames relative to one another in a specific direction.
- Fig. 4 shows a perspective view of a bottom frame of a second embodiment of the machine according to the invention.
- Fig. 5 shows a bottom perspective view of the top frame associated with the bottom frame according to Fig. 4.
- Fig. 6 shows a plan view of the top frame according to Fig. 5.
- the machine shown in the figures comprises a top frame 1 and a bottom frame 2.
- the top frame 1 is provided with legs 3, the length L of the portion of these legs 3 that extends below the top frame being variable. Movement of the legs 3 can take place with the aid of cylinders containing pressure medium.
- Three bearing surfaces 4 of the top frame 1 are in contact with supporting surfaces 5 of the bottom frame 2, which is provided with the legs 6.
- the bottom frame 2 is arranged such that it can rotate on a hinge pin 7 that is fixed to a carriage 8 that is supported by the top frame 1 such that it can be moved in the direction indicated by the double-headed arrow P.
- the top frame 1 is made up of three girders 9 serving to support the legs 3 and guides that support the carriage 8.
- the bottom frame 2 is formed by three beams 10, which extend from the hinge pin 7 and are provided at their ends with the supporting surfaces 5.
- the cylinders 11 are symmetrically arranged with respect to the direction of movement P of the carriage 8.
- the top frame 1 has a dredge 12 that in a known manner is constituted by a ladder 13, which is connected to the top frame 1 such that it can pivot and slew.
- a dredging wheel 14 that can be driven is fitted at the end of the ladder 13.
- the material sucked up is pumped to a vessel, which is not shown, via a line 17.
- the machine is lowered down onto the bed, and the entire machine is operated, from this vessel.
- Fig. 3A shows a ladder 13 in the central, operating position.
- the top frame 1 When the ladder 13 has executed its slewing movement, for example through approximately 90°, as indicated in Figure 2, the top frame 1 will be moved, for which purpose the ladder 13 is brought into the position shown in Figure 3B.
- the legs 3 of the top frame 1 are now retracted, so that this frame comes to bear on the bottom frame 2 as shown in Figure 3C.
- the top frame 1 is then slid over the bottom frame 2 with the aid of the cylinders 11 into the position in Figure 3D.
- the legs 3 are pushed downwards again as shown in Figure 3E and further downwards into the position in Figure 3F, in which the bottom frame 2 has been moved again with respect to the top frame 1.
- the dredge 12 can then be used again.
- the legs 6 of the bottom frame 2 can also be made adjustable with respect to this frame. This can be advantageous when the machine has to be moved on a bed that is not uniform.
- FIG. 4 Another construction where the hinge pin 7 is now fixed to the top frame 1 as shown in Figures 5 and 6 is shown in the embodiment in Figures 4, 5 and 6.
- An elongated track 8 in which the pin 7 can be accommodated has been cut out in the bottom frame 2, as shown in Figure 4.
- the collar 18 shown in Figure 5 is fixed to the free end of the pin.
- the frames 1, 2 are secured with respect to one another, but are able to perform translational and rotational movements.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
- Movable Scaffolding (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
- The invention relates to a machine, such as a dredger for setting up on a substrate, such as the bed of a body of water, comprising a top frame and a bottom frame, each of which is provided with legs for supporting the frame concerned on the substrate, which legs of the top frame have a variable length, bearing means that allow rotational and translational movements of the top frame and bottom frame over one another, as well as drive means for rotational and/or translational movement of the top frame and the bottom frame over one another.
- Such a machine is disclosed in GB-A 1 328 264. This known machine is constructed as a dredger that has a ladder mounted on the top frame with a cutting head at the free end. This top frame has a live ring, while the bottom frame has a linear roller track. The bottom ring of the live ring joined to the top frame is supported on the roller track, such that the top frame is able to execute both rotational and translational movements with respect to the bottom frame.
- The disadvantage of this known machine is that the construction thereof is complex. The live ring and the roller track, which are operated underwater, are, moreover, vulnerable components that have to be protected well against the ingress of water, in particular sea water.
- The aim of the invention is, therefore, to provide a machine of the abovementioned type that does not have these disadvantages. Said aim is achieved in that one of the frames has a pin and the other frame has an elongated track along which the pin can be slid and with respect to which the pin can be rotated.
- With the machine according to the invention the mutual movements of the frames are made possible by relatively simple means, which can be exposed to water without any problem. In particular, the track can comprise a slot-shaped opening in one of the frames, such that the pin protrudes with respect to, and is fixed to, the other frame, in which slot the pin is accommodated such that it can be slid and rotated.
- The slot can be defined between two longitudinal elements permanently joined to one of the frames. The pin can have a collar that extends over said longitudinal elements on the side thereof that faces away from the frame that has the pin. In this way the relationship between the frames is ensured in a simple manner.
- According to a preferred embodiment the pin is fixed to the bottom frame and the track is accommodated on the top frame.
- A very simple embodiment is obtained if the bearing means comprise at least sliding bearings. In this context the bottom frame can have supporting surfaces that are oriented upwards when the machine is in use, whilst the top frame can have bearing surfaces that are oriented downwards and bear on the supporting surfaces when the machine is in use. Preferably, the supporting surfaces are made of stainless steel and the bearing surfaces of polyethylene. The water from the surroundings can then act as lubricant.
- Since the legs of the top frame can already be lengthened and shortened, the legs of the bottom frame can be fixed.
- In one embodiment of the machine according to the invention that can be placed on the substrate in a very stable position, both frames are provided with three legs. The top frame can then, for example, comprise three girders that define an equilateral or essentially equilateral triangular shape. The bearing surfaces are then preferably close to the comers of the top frame.
- Furthermore, the bottom frame can comprise three beams, one end of which, in each case, is joined to a core and the other, free end of which is oriented away from the core, which free ends are essentially equal distances apart. The supporting surfaces are then preferably close to the free ends of the beams.
- A dredging device, such as a ladder that at one end is coupled to the top frame in a movable manner and that has dredging means, such as a dredging wheel, at the other end, can be mounted on the top frame.
- The top frame and the bottom frame can be joined to one another by at least two hydraulic piston/cylinder devices for executing the mutual translational and rotational movements of said frames.
- The invention will be explained in more detail with reference to a few illustrative embodiments shown in the drawing.
- Fig. 1 shows a perspective view of a first embodiment of a machine according to the invention.
- Fig. 2 shows, diagrammatically, a plan view of the machine in Fig. 1.
- Figs 3A-F show, diagrammatically, successive positions when moving the two frames relative to one another in a specific direction.
- Fig. 4 shows a perspective view of a bottom frame of a second embodiment of the machine according to the invention.
- Fig. 5 shows a bottom perspective view of the top frame associated with the bottom frame according to Fig. 4.
- Fig. 6 shows a plan view of the top frame according to Fig. 5.
- The machine shown in the figures comprises a
top frame 1 and abottom frame 2. Thetop frame 1 is provided withlegs 3, the length L of the portion of theselegs 3 that extends below the top frame being variable. Movement of thelegs 3 can take place with the aid of cylinders containing pressure medium. - Three bearing
surfaces 4 of thetop frame 1 are in contact with supportingsurfaces 5 of thebottom frame 2, which is provided with thelegs 6. Thebottom frame 2 is arranged such that it can rotate on ahinge pin 7 that is fixed to acarriage 8 that is supported by thetop frame 1 such that it can be moved in the direction indicated by the double-headed arrow P. - The
top frame 1 is made up of threegirders 9 serving to support thelegs 3 and guides that support thecarriage 8. Thebottom frame 2 is formed by threebeams 10, which extend from thehinge pin 7 and are provided at their ends with the supportingsurfaces 5. - Two
cylinders 11 containing pressure medium, the one end of which cylinders is connected to thetop frame 1 such that it can pivot and the other end of which is connected to thebottom frame 2, serve for movement of theframes cylinders 11 are symmetrically arranged with respect to the direction of movement P of thecarriage 8. - In the embodiment shown in the drawing the
top frame 1 has adredge 12 that in a known manner is constituted by aladder 13, which is connected to thetop frame 1 such that it can pivot and slew. A dredgingwheel 14 that can be driven is fitted at the end of theladder 13. At the dredgingwheel 14 there is asuction line 15 that is connected to twopumps 16 that are supported by thetop frame 1. The material sucked up is pumped to a vessel, which is not shown, via aline 17. The machine is lowered down onto the bed, and the entire machine is operated, from this vessel. - Fig. 3A shows a
ladder 13 in the central, operating position. When theladder 13 has executed its slewing movement, for example through approximately 90°, as indicated in Figure 2, thetop frame 1 will be moved, for which purpose theladder 13 is brought into the position shown in Figure 3B. Thelegs 3 of thetop frame 1 are now retracted, so that this frame comes to bear on thebottom frame 2 as shown in Figure 3C. Thetop frame 1 is then slid over thebottom frame 2 with the aid of thecylinders 11 into the position in Figure 3D. Thelegs 3 are pushed downwards again as shown in Figure 3E and further downwards into the position in Figure 3F, in which thebottom frame 2 has been moved again with respect to thetop frame 1. Thedredge 12 can then be used again. - When the
top frame 1 is moved from the position shown in Figure 3C into the position in Figure 3D, the piston rods of thecylinders 11 are moved over identical distances and thetop frame 1 is slid relative to thebottom frame 2 in the direction of the arrow P in Figure 2. When the piston rods are moved over unequal distances, thetop frame 1 will slew with respect to thebottom frame 2. As a result of such slewing, the point where the dredge is connected to the top frame is moved sideways as seen in Figure 2. In this way the equipment is thus able to perform a course correction and the dredge can start to work an area of ground that is alongside the previously worked area. - As already stated above, the
legs 6 of thebottom frame 2 can also be made adjustable with respect to this frame. This can be advantageous when the machine has to be moved on a bed that is not uniform. - Another construction where the
hinge pin 7 is now fixed to thetop frame 1 as shown in Figures 5 and 6 is shown in the embodiment in Figures 4, 5 and 6. Anelongated track 8 in which thepin 7 can be accommodated has been cut out in thebottom frame 2, as shown in Figure 4. After thepin 7 has been inserted in thetrack 8, thecollar 18 shown in Figure 5 is fixed to the free end of the pin. As a result, theframes - It is clear that only a few possible embodiments of a machine according to the invention have been shown in the drawing and described above and that numerous modifications can be made without going beyond the inventive concept as specified in the claims.
Claims (20)
- Machine, such as a dredger for setting up on a substrate, such as the bed of a body of water, comprising a top frame (1) and a bottom frame (2), each of which is provided with legs (3, 6) for supporting the frame (1, 2) concerned on the substrate, which legs (3) of the top frame (1) have a variable length, bearing means that allow rotational and translational movements of the top frame (1) and bottom frame (2) over one another, as well as drive means for rotational and/or translational movement of the top frame (1) and the bottom frame (2) over one another, characterised in that one (2) of the frames (1, 2) has a pin (7) and the other frame (1) has an elongated track (8) along which the pin (7) can be slid and with respect to which the pin (7) can be rotated.
- Machine according to Claim 1, wherein the track comprises a slot-shaped opening (8) in one (1) of the frames (1, 2), and the pin (7) protrudes with respect to, and is fixed to, the other frame (2), in which slot (8) the pin (7) is accommodated such that it can be slid and rotated.
- Machine according to Claim 2, wherein the slot (8) is defined between two longitudinal elements permanently joined to one (1) of the frames (1, 2) and the pin (7) has a collar (18) that extends over said longitudinal elements on the side thereof that faces away from the frame (2) that has the pin (7).
- Machine according to Claim 3, wherein the longitudinal elements are constructed as structural girders, such as an I-beam or a T-beam.
- Machine according to one of the preceding claims, wherein the pin (7) is fixed to the bottom frame (2) and the track is accommodated on the top frame (1).
- Machine according to one of the preceding claims, wherein the bearing means comprise at least sliding bearing means (4, 5).
- Machine according to Claim 6, wherein the bottom frame (2) has supporting surfaces (5) that are oriented upwards when the machine is in use, and the top frame (1) has bearing surfaces (4) that are oriented downwards and bear on the supporting surfaces (5) when the machine is in use.
- Machine according to Claim 7, wherein the supporting surfaces (5) are made of stainless steel.
- Machine according to Claim 6 or 7, wherein the bearing surfaces (4) are made of polyethylene.
- Machine according to one of the preceding claims, wherein the legs (6) of the bottom frame (2) are fixed.
- Machine according to one of the preceding claims, wherein both frames (1, 2) are provided with three legs (3, 6).
- Machine according to one of the preceding claims, wherein the top frame (1) comprises three girders (9) that define an isosceles or essentially equilateral triangular shape.
- Machine according to Claim 12 in combination with one of Claims 7 - 9, wherein the bearing surfaces (4) are close to the corners of the top frame (1).
- Machine according to Claim 12 or 13, wherein the bottom frame (2) comprises three beams (10), one end of which, in each case, is joined to a core and the other, free end of which is oriented away from the core, which free ends are essentially equal distances apart.
- Machine according to Claim 14, wherein the supporting surfaces (5) are close to the free ends of the beams (10).
- Machine according to Claim 14 or 15, wherein the pin (7) is fixed to the core of the bottom frame (2).
- Machine according to one of the preceding claims, wherein a dredging device is mounted on the top frame (1).
- Machine according to Claim 17, wherein the dredging device comprises a ladder that at one end is coupled to the top frame (1) in a movable manner and that has dredging means, such as a dredging wheel (14), at the other end.
- Machine according to Claim 18, wherein the ladder is connected to the top frame (1) via a universal joint.
- Machine according to one of the preceding claims, wherein the top frame (1) and the bottom frame (2) are connected to one another by at least two hydraulic piston/cylinder devices for executing the mutual translational and rotational movements of said frames.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1025032 | 2003-12-16 | ||
NL1025032A NL1025032C2 (en) | 2003-12-16 | 2003-12-16 | Tool, such as a dredging tool, for installation on a submerged soil. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1544358A1 true EP1544358A1 (en) | 2005-06-22 |
EP1544358B1 EP1544358B1 (en) | 2009-06-17 |
Family
ID=34511339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077662A Not-in-force EP1544358B1 (en) | 2003-12-16 | 2004-09-27 | Machine for use underwater |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1544358B1 (en) |
AT (1) | ATE434089T1 (en) |
DE (1) | DE602004021548D1 (en) |
NL (1) | NL1025032C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018117842A1 (en) | 2016-12-23 | 2018-06-28 | Carpdredging Ip B.V. | Rectangular frame |
CN109501880A (en) * | 2018-12-18 | 2019-03-22 | 罗厚博 | Single wheel two leg walking robot |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3218739A (en) * | 1963-05-13 | 1965-11-23 | Ellicott Machine Corp | Dredge |
GB1328264A (en) * | 1971-05-17 | 1973-08-30 | Hollandsche Aannemings Mij Nv | Apparatus for performing dredging and other underwater operations |
GB2064624A (en) * | 1979-11-01 | 1981-06-17 | Koninkl Volker Stevin Nv | Apparatus for Performing Work Under Water |
GB2151671A (en) * | 1983-12-21 | 1985-07-24 | Komatsu Mfg Co Ltd | Levelling apparatus |
SU1266941A1 (en) * | 1985-06-20 | 1986-10-30 | Красноярское Производственное Объединение Тяжелых Экскаваторов "Крастяжмаш" | Rail-mounted walking mechanism |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60104474A (en) * | 1983-11-09 | 1985-06-08 | Nippon Kokan Kk <Nkk> | Walking device |
-
2003
- 2003-12-16 NL NL1025032A patent/NL1025032C2/en not_active IP Right Cessation
-
2004
- 2004-09-27 EP EP04077662A patent/EP1544358B1/en not_active Not-in-force
- 2004-09-27 AT AT04077662T patent/ATE434089T1/en not_active IP Right Cessation
- 2004-09-27 DE DE602004021548T patent/DE602004021548D1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3218739A (en) * | 1963-05-13 | 1965-11-23 | Ellicott Machine Corp | Dredge |
GB1328264A (en) * | 1971-05-17 | 1973-08-30 | Hollandsche Aannemings Mij Nv | Apparatus for performing dredging and other underwater operations |
GB2064624A (en) * | 1979-11-01 | 1981-06-17 | Koninkl Volker Stevin Nv | Apparatus for Performing Work Under Water |
GB2151671A (en) * | 1983-12-21 | 1985-07-24 | Komatsu Mfg Co Ltd | Levelling apparatus |
SU1266941A1 (en) * | 1985-06-20 | 1986-10-30 | Красноярское Производственное Объединение Тяжелых Экскаваторов "Крастяжмаш" | Rail-mounted walking mechanism |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section PQ Week 198724, Derwent World Patents Index; Class Q42, AN 1987-169163, XP002289324 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018117842A1 (en) | 2016-12-23 | 2018-06-28 | Carpdredging Ip B.V. | Rectangular frame |
CN109501880A (en) * | 2018-12-18 | 2019-03-22 | 罗厚博 | Single wheel two leg walking robot |
CN109501880B (en) * | 2018-12-18 | 2021-07-13 | 罗厚博 | Single-wheel biped walking robot |
Also Published As
Publication number | Publication date |
---|---|
ATE434089T1 (en) | 2009-07-15 |
NL1025032C2 (en) | 2005-06-20 |
DE602004021548D1 (en) | 2009-07-30 |
EP1544358B1 (en) | 2009-06-17 |
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