• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An apparatus (1) for laying a cover layer (2) of loose material on a subsea ground (3) is described, wherein the apparatus (1) comprises: - a pipe (200), with a longitudinal axis (L), for guiding the loose material from a loose material storage and to the subsea ground (3), the pipe (200) having an outlet portion (206) from which the loose material leaves the pipe (200); and - a damping device (207) arranged in connection with the outlet portion (206) of the pipe (200) for damping the vertical fall of the loose mass before the loose mass is supplied to the subsea ground (3). A barge (300) is also described which comprises the apparatus (1)
    公开号:DK201901401A1
    申请号:DKP201901401
    申请日:2019-11-29
    公开日:2020-07-13
    发明作者:Dale Bjørn
    申请人:Moi As；
    IPC主号:
    专利说明:

    The invention relates to an apparatus for laying a cover layer of loose material on a submarine ground. - The invention relates to an apparatus for laying a cover layer of loose material on a submarine ground. More particularly, the invention relates to a paving apparatus suitable for bringing a loose material from a loose landfill or storage facility above the water surface and to a relevant area of the subsea ground. The invention also relates to a barge comprising said apparatus. Background | Contaminated harbor basins, lakes, rivers and canals can be contaminated with polluted masses on the bottom, referred to herein as subsea soil. The purpose is to prevent the spread of environmental toxins and to prevent organisms in the water from coming into contact with the contaminated masses. Large areas of Norwegian fjords have polluted seabeds that are, or will be, covered with suitable loose materials. Loose materials in this context mean suitable, clean materials such as gravel, crushed stone, shell sand and the like.
    With covering, a new seabed is established over the contaminated sediments. Sometimes, in order to prevent the cover layer from sinking into the contaminated masses, a non-woven fabric, or geotextile, is first laid over the contaminated subsea. Known technology and issues The loose materials that are to be placed on the subsea ground can, when dropped, easily spread over a larger area than intended. This can lead to loss of loose material, uneven thickness of the cover layer, and thus more work and greater use of resources. There are several known ways to lay out a cover layer. The cover layer can, for example, be laid out by means of a bottom tray barge. This is, as the name suggests, a barge where the masses can be released from the bottom of the barge. The purpose is to get the least possible turbulence of particles in the 2 - water. It is nevertheless a challenge to get close enough to the bottom for the placement of the material to be accurate. The use of bottom battens is best suited for large amounts of material and where even thickness of the cover layer is not important.
    , DK 2019 01401 A1 Another known method is to use a pipe system connected to a laying head. The pipe system is connected at one end to a large vessel carrying the bulk material, and at the other end, to the laying head, connected to a small vessel, such as a water drone, which is used for positioning. The laying head can be lowered towards the bottom for the best possible placement of the loose materials. A disadvantage of this system is that it is resource-intensive as the loose materials must be pumped through a long pipe system. When pumping, seawater is added, which can contribute to an inaccurate deposition of the loose materials. The invention and its object The object of the invention is to remedy or reduce at least one of the disadvantages of the prior art, or at least to provide a useful alternative to the prior art. The object is achieved by the features stated in the description below and in the following patent claims. The invention relates to an apparatus for laying covering loose material on a subsea ground, where the apparatus can be used from land or from a water-going vessel, such as a barge. The invention is defined by the independent claims. The dependent claims define advantageous embodiments of the invention. In a first aspect, the invention more specifically relates to an apparatus for laying a cover layer of loose material on a subsea ground, the apparatus comprising: 2 X-one pipes, with a longitudinal axis, for guiding the loose material from a loose material storage and to the subsea the ground, the pipe having an outlet portion from which the loose material leaves the pipe; and - a damping device arranged in connection with the outlet portion of the pipe to dampen the vertical fall of the loose mass before the loose mass is supplied to the subsea ground. By submarine ground is meant herein, as mentioned above, the seabed, typically in a harbor basin 2, as well as the bottom of a lake, river or canal. The term pipe can in this connection be understood as any enclosed channel or hose which is suitable for transporting loose materials. The device is designed to be able to lay out both fine-grained and coarse loose materials, such as sand, gravel and crushed stone.
    The invention according to the first aspect solves the problem of turbulence of contaminants
    2 DK 2019 01401 A1 masses from the seabed, by laying the cover mass down as carefully as possible. The damping device will dampen a vertical drop, so that the mass that comes down into the pipe does not fall straight out on the subsea ground, but has the speed adjusted. This avoids the mass penetrating into the ground uncontrolled, and the risk of turbulence of soil sediments s - is reduced. The damping device can be a mechanical obstacle at the outlet of the pipe. The damping device can be an inclined shaft arranged to guide the loose material away from the outlet part of the pipe.
    The oblique shaft can have different lengths depending on the desired damping and desired range away from the pipe. | In one embodiment, the oblique shaft may be provided with a vibrator. This is particularly relevant in cases where the fall in the pipe is small or in cases where the oblique shaft is long and slack to obtain a long range. The vibrator can then be used to drive the loose materials forward in the oblique hunt and out onto the subsea ground.
    The oblique shaft may comprise a profiled inner portion arranged to give the oblique shaft increased strength and to give a more even distribution of the loose materials. The inclined shaft can be rotatable about the longitudinal axis of the pipe. A rotatable oblique shaft can give the device greater range. The inclined shaft can be rotatable 360% about the longitudinal axis of the pipe. The inclined shaft can be rotatable about an axis perpendicular to the longitudinal axis of the pipe. By making the sloping shaft rotatable, the damping effect can be increased or decreased as desired. | In addition, a rotatable inclined shaft has the effect that in the event of variations in the topography of the ground, the inclined shaft can be tilted up or down so that the height from which the loose materials are released is optimal. The apparatus may comprise two inclined shafts mounted diametrically opposite each other at the outlet portion of the pipe. In an alternative embodiment, the apparatus comprises one inclined shaft which is connected to the pipe in such a way that the loose masses come down approximately in the middle of the inclined shaft and that the inclined shaft 2 can then be tilted in one or the other direction, depending on where the loose masses are desired to be located. An effect of two inclined shafts, possibly one inclined shaft that can be rotated to two different sides, is that the inclined shaft does not have to be rotatable 360 degrees about the longitudinal axis of the pipe, then 180 degrees is enough, and this simplifies the construction of the device.
    The scrap hunt can be provided with a spreading device.
    1 DK 2019 01401 A1 The spreading device can be arranged so that it spreads the loose material over a large area, for example by the spreading device being arranged to distribute the loose material from the oblique hunt in several smaller runs. The device may further comprise a sonar.
    s Sonar is advantageous to use to measure distance and water depth in order to obtain as accurate an application of loose material as possible. In this type of work, it is more advantageous to use sonar than, for example, a camera, which is otherwise common, due to particles in the water that obscure the view. In an advantageous embodiment, the apparatus may comprise two sonar. One sonar can then be used to measure the thickness of the already laid cover layer, and the other - the sonar can be used to measure the distance from the pipe, damping device, inclined shaft or spreading device and to the subsea ground. Sonar is an example of a type of sonar that is suitable for this use.
    The sonar may advantageously be located on the damping device, more advantageously on the inclined shaft in the embodiments comprising an inclined shaft, and even more advantageously on the spreading device in the embodiments comprising a spreading device.
    The effect of having the sonar as close as possible to the place where the loose materials leave the device is that the bottom level can be calculated continuously before laying the cover masses for more accurate adjustment of the device's spreading device, inclined shaft and / or damping device. The tube can be telescopic.
    2 Telescopic tubes make the device more flexible so that it can be adapted to different water depths. The apparatus may further comprise a hydraulic winch for lengthening and shortening the telescopic tube.
    Hydraulic winch makes the work of hoisting and lowering, ie shortening and lengthening, the telescopic tube, easier. | In an advantageous embodiment, the apparatus may comprise two winches arranged diametrically opposite each other about the pipe, in order thereby to give a more even load on the pipe.
    The apparatus may further comprise a belt feeder for feeding loose material into the pipe. In its simplest variant, loose material can be fed into the pipe with an excavating device, such as an excavator, which has access both to the loose material storage and to an opening in the pipe, typically in the upper end portion of the pipe, in the position of use. To provide the apparatus with a tape
    ; DK 2019 01401 A1 feeder has the effect that the feeding becomes more continuous and even. An excavator can be used to lay loose material on the belt which then leads the loose material to the pipe.
    The belt feeder may be telescopic. By making the belt feeder telescopically, the range of the device is increased. If the device is s - placed on a barge, an additional effect will be that the barge can lie still longer. With increased reach on the belt feeder, it is not necessary to move the barge as often. The belt feeder may further be arranged to be able to move in a path along the long side of the barge or along a quay, with the effect that the range is increased in another direction. With telescopic belt feeders which preferably project perpendicularly from the long side of the barge, or from a quay or the like, which can additionally move in a direction parallel to the long side of the barge or the quay, a large, rectangular area of the subsea ground can be covered before is necessary to move the barge. For example, a barge can have a length of 60 meters. The belt feeder can, for example, have a telescope of ten meters. With a rotatable damping device, the apparatus will be able to cover an area of approximately 700 square meters without the barge having to be moved. The apparatus may further comprise a programmable logic control (PLC) system for controlling amounts of loose material laid out on the subsea ground, by controlling the movements of the apparatus and measuring how much mass is fed into the apparatus. In a second aspect, the invention more specifically relates to a barge comprising the apparatus 2 - according to the first aspect of the invention. When the device is mounted on a barge, it has a greater range and is more mobile than if it is mounted on land. This is an advantageous embodiment of the invention. The barge can further be provided with four positioning propellers for propulsion and positioning.
    2 - Positioning propellers, often referred to by professionals as thrusters, are advantageous means of propulsion for the barge. The positioning propellers can be fixedly mounted on the barge in a static, non-rotatable manner. The positioning propellers may be of a special type, described in more detail herein, which are rigidly attached to the outside of the barge and which are held in a fixed position relative to the barge during use.
    . DK 2019 01401 A1 The positioning propellers can be placed in connection with each of the corners of the barge.
    By placing the positioning propellers in each corner, the barge will be able to be driven in all four directions.
    Positioning propellers that are not swivel can be advantageous to use because they are simpler and more reliable than swivel thrusters.
    The positioning propellers can be operated individually.
    Two of the propellers can push while the other two pull.
    Furthermore, it is very advantageous to use such positioning propellers in connection with the laying of cover layers because they are suitable for keeping the barge still so that no anchoring is necessary.
    Furthermore, when the day's work is done, it is not necessary to tow the barge ashore, as it can provide for its own machine using the four positioning propellers.
    The positioning propellers can be inclined relative to each other for the best possible effect.
    The positioning propellers can be attached slightly from the corners, into the short sides of the barge, to prevent collisions with, for example, the quay edge.
    A barge is rectangular in shape and a greater pushing force is required on the long side than on the 1 - short side.
    The positioning propellers can be angled so that the pushing force is approximately equal to whether the barge is moved longitudinally or transversely.
    The apparatus may further comprise a GPS-based positioning system according to the prior art, wherein the positioning system is connected to a control system for the positioning propellers.
    The positioning system can be connected to the device and / or the damping device so that - the position of the damping device can be registered.
    The apparatus may be arranged to be able to move along one of the long sides of the barge.
    The barge may be provided with a carriageway at the edge of one long side.
    The device, which for example can be provided with wheels or belts to be able to drive on a track, on a track or on a surface, can then move along the long side of the barge while laying 2 - release mass on the subsea ground.
    If the apparatus comprises a telescopic belt feeder, then the belt feeder may be extended further before the apparatus is driven back along the long side of the barge, so as to lay overlapping strips of cover material on the subsea bottom while holding the barge in position by the positioning propellers.
    A positioning propeller is also described herein, the positioning propeller comprising a propeller; a motor connected to the propeller via a drive shaft; a gear; and
    , DK 2019 01401 A1 a fastening device for fastening the positioning propeller on a vessel, for example a barge. The positioning propeller can be without a pivoting device, ie the propellers can be mounted at a fixed angle in relation to the vessel's hull.
    The positioning propeller may be equipped with an electronic Global Positioning System (GPS). The fastening device of the positioning propeller can be arranged for quick connection to a vessel, for example in the form of hooks or hooks which are arranged to engage with suitable counterparts with barbs which can be mounted on the outside of, for example, a barge. The counterparts may comprise a plurality of barbs so that the depth of the positioning propeller can be - adjusted. In this way, the depth of the propeller can be adapted to the ground conditions. A significant advantage of the positioning propeller described herein over a prior art positioning propeller / thruster is that the positioning propeller can be easily mounted and disassembled from the barge or vessel to which it is mounted when the barge is in the water. This is particularly beneficial when servicing and maintaining the positioning propeller. The positioning propeller can be equipped with a knife for automatic cutting of ropes that enter the propeller, thereby making the propeller more reliable. The position of the positioning propeller can be of such a dimension that when the positioning propeller is mounted on the barge, the propeller can be in the water, at the same time as the upper part of the positioning propeller, where the motor can be placed, is above the upper edge of the barge and is accessible from the barge deck. The positioning propeller can preferably be provided with a cylinder head which can be easily gripped with, for example, an excavator for quick replacement of the positioning propeller, for example during necessary maintenance. A belt feeder is also described, wherein the belt feeder comprises: - a conveyor belt; and - a chassis placed under a portion of the conveyor belt, the chassis being provided with wheels or belts to be able to move the conveyor belt. The belt feeder may further be provided with a support device arranged below a portion of - the conveyor belt projecting from the chassis, where the support device is arranged to slide
    9 DK 2019 01401 A1 or roll along a surface. In one embodiment, where a portion of the conveyor belt projects beyond the edge of a vessel, for example a barge, the support device may be arranged to roll along an outer edge of the barge.
    The conveyor belt can be telescopic. That is, the belt feeder may be provided with two s or more conveyor belts which are arranged so that they can be placed overlapping one another, so that the conveyor belt is thereby extended. Also described is a method of holding a barge stably in position. The method comprises the step of placing a fixed corner propeller in or near each corner of the barge. Furthermore, the method may comprise the step of placing the corner propellers at an angle in relation to each other, i.e. inclined at the corners of the barge. Still further, the method may comprise the step of placing all four corner propellers on the short sides of the barge, two on each short side, near their respective corners. In the following an example of a preferred embodiment is described which is illustrated in the accompanying drawings, in which: FIG. 1 shows a perspective view of an apparatus for laying a cover layer of loose material on a subsea ground; FIG. 2 shows a side view of the apparatus of figure 1; FIG. 3 shows a side view of the telescopic tube; 2 FIG. 4 shows the apparatus seen from above; FIG. 5 shows a perspective view of a barge with the apparatus for laying a cover layer; FIG. 6 shows an alternative embodiment of the damping device of the apparatus; FIG. 7 is a side view showing the apparatus for laying cover layers under a jetty edge; FIG. 8a and 8b show, on a larger scale and in perspective, a positioning propeller seen from two different angles;
    o DK 2019 01401 A1 Fig. 9 is a schematic diagram of a barge mounted on four positioning propellers; and FIG. 10 is a principle sketch showing an example of how the cover layer can be laid out.
    It should be noted that all of the above embodiments illustrate the invention, but do not limit it, and those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. | the requirements, reference numbers in parentheses shall not be construed as limiting. To make the reading of the figures as simple as possible, not all reference numbers are included in all the figures.
    Reference is first made to Figure 1 which illustrates an apparatus 1 for laying a cover layer 2 (shown in Figures 7 and 10) on a subsea ground 3 (shown in Figures 7 and 10). The apparatus 1 comprises a pipe 200 for guiding the loose material from a loose material warehouse (not shown) which may for example be located on land or on a vessel, for example a barge 300. The pipe 200 has a longitudinal axis L. Furthermore, the pipe 200 has a outlet portion 206 from which the loose material leaves the pipe 200. Furthermore, the apparatus 1 comprises a damping device 207 arranged in connection with the outlet portion 206 of the pipe 200 to damp the vertical fall of the loose mass before the loose mass is discharged on the subsea ground 3. The damping device 207 is as illustrated an inclined shaft arranged to guide the loose material away from the outlet portion 206 of the pipe 2006. The inclined shaft may be rotatable about the longitudinal axis L of the second pipe 200. Furthermore, the inclined shaft, as illustrated here, can be rotated about an axis A perpendicular to the longitudinal axis L. of the pipe 200. may comprise one inclined shaft which is mounted so that the pipe 200 opens into an end portion of the inclined shaft. Alternatively, one of the inclined shafts can be mounted so that the pipe 200 opens into a central portion of the inclined shaft, where the inclined shaft can be rotated optionally in one or the other direction. The apparatus 1 may comprise two inclined shafts mounted diametrically opposite each other about the pipe 200, both inclined shafts being rotatable about an axis A which is perpendicular to the longitudinal axis L of the pipe 200. The damping device 207, for example in the form of the inclined shaft, may be provided with a spreading device 210 which has the function of spreading the loose masses when they come out of the scratch shaft. In the embodiment shown, the inclined shaft is shown with support 211 for attachment to the outside of the pipe 200 and with hydraulic cylinders 212 for controlling the rotational movement of the inclined shaft. It must be understood that a professional in the field will be able to attach the oblique shaft to the pipe
    0 DK 2019 01401 A1 200 also in other ways. The apparatus 1 may further comprise a sonar, for example an echo sounder. This is not illustrated. The sonar may be attached to the tube 200, to the damping device 207, for example to the oblique shaft, or to the spreading device 210.
    s - The tube 200 may be telescopic. That is, the tube 200 as illustrated herein may comprise two or more tubes, such as an upper tube 202, a central tube 203 and a lower tube 204. The tube 200 may further be provided with buoyancy bodies 205. Such buoyancy bodies 205 may for example, be located in the transition between the tubes 202, 203, 204.
    The apparatus 1 may further comprise a hydraulic winch 215 for lengthening and / or shortening the telescopic tube 200. The winch 215 may typically be attached to the upper tube 202 and a wire 216 may be attached to the middle tube 203 and the lower tube. 204. The apparatus 1 is shown here installed on a barge 300. | Figure 1 shows only a portion of the barge 300. The device 1 can also be installed, for example, on land, near the sea, a river, a canal, or a lake, for example on a quay. The apparatus 1 is arranged on the deck 310 of the barge 300. The apparatus 1 is shown here comprising a belt feeder 100. The belt feeder 100 comprises a chassis 110 which is provided with wheels or, as in the example shown, belts so that the belt feeder 100 can be moved along, for example, a long side of the barge 300. The belt feeder 100 is provided with one or more conveyor belts 104. The belt feeder 100 is arranged so that 2 reading masses can be loaded on the belt feeder 100, for example by means of an excavator. The mass can be laid on the conveyor belt 104, for example via a hopper 101 as shown in the figure. The belt feeder 100 may be provided with a telescopic frame 102 so that the range can be increased. The conveyor belt 104 can be terminated so that the pulp falls into a drain 103 and from there down into a hopper 201 and down into the pipe 200. The belt feeder 100 may further be provided with a control center 105 for monitoring and controlling the feeding of pulp to the pipe 200. | In the embodiment shown, the belt feeder 100 is provided with a support device 108 which supports a portion of the conveyor belt 104 projecting from the barge 300. The support device 108 may be provided with a wheel 107, or another sliding or rolling device, for guiding the support device 108 along a side edge of the barge 300. The barge 300 may be provided with corresponding wheel support 311 to receive the wheel 107. The barge may further be provided with an outer edge support 312 and an inner edge support 313 to guide the chassis 110 as it moves along the long side of the barge 300.
    DK 2019 01401 A1 The barge 300 may further be provided with fasteners 315 for positioning propellers 330, see fig. 9. In the figure, one positioning propeller 330 is shown mounted in a corner of the barge 300. The positioning propeller 330, which is also illustrated in detail in Figures 8a and 8b, is provided with a frame 331 with coupling brackets 332 for easy connection to the position of the barge 300. ring propeller mount 315. The positioning propeller 330, commonly referred to as a thruster by those skilled in the art, is provided with a propeller 335 for propulsion, a motor 333 for driving the propeller 335 and a drive shaft 338 connecting the propeller 335 and the motor 333. The positioning propeller 330 may further be provided with a gear 337. In order to be able to easily lift the positioning propeller 330 off the barge 300, the positioning propeller 330 may be provided with lifting ears 334.
    - These can be easily gripped with, for example, an excavator, to lift the positioning propeller 330 of the apparatus 1. This is useful when replacing or repairing the positioning propeller 330. Furthermore, the propeller 335 can be provided with a knife 336 for cutting for example ropes entering the propeller 335 (shown in Figure 8a).
    Reference is now made to Figure 2 which shows a side view of the apparatus 1 as shown in Figure 1. The barge 300 is placed in the water, and the dashed line in the figure indicates the water surface 99. The propeller 335 of the positioning propeller 330 is placed in the water. The tube 200 is shown in a contracted state, so that the buoyancy bodies 205 lie together. These are not in contact with the water in this position. The figure illustrates the range of motion of the damping device 207 as it is rotatable about an axis perpendicular to the longitudinal axis L of the tube 200.
    2 - Figure 3 illustrates the range of the device 1 in a longitudinal direction | and a depth d. The tube 200 is shown in a first position P1 of greatest length | and a minimum depth d, and in a second position P2 with a minimum length | and a greatest depth d. | the first position P1, the tube 200 is shown contracted. In the second position P2, both the upper tube 202, the middle tube 203 and the lower tube 204 are shown in full length. The buoyancy bodies 205 help to stabilize the barge 300. The effect of the buoyancy bodies 205 increases with the distance of the pipe 200 | to the barge 300 and is largest when the pipe is in the first position P1. Figure 4 shows a section of the barge 300 seen from above, where the spreading device 210 of the apparatus 1 clearly emerges. Furthermore, the figure illustrates an example of how a positioning propeller 330 can be mounted to avoid coming into conflict, for example with the quay when the barge 300 is to be moored. The positioning propellers 330 in Figure 4 are not pivotable. The positioning propellers 330 can therefore, as illustrated here, be mounted at an angle and at an angle to each other. Experiments performed by the viewfinder show that the optimal angle is between 35 and 55 degrees in relation to the short side of the barge 300. In the figure, the positioning propellers 330 are shown at an angle of 55 degrees to the short side of the barge.
    2 DK 2019 01401 A1 Figure 5 is a perspective drawing of the apparatus 1 mounted on the barge 300. Here is also shown an excavator 400 which loads loose materials into the belt feeder 100 funnel 101. As appears from the drawing, the conveyor belt 104 here comprises two conveyor belts 104 which are arranged overlapping one another so that the belt feeder 100 is telescopic and the tube 200 s can therefore be extended further out of the barge 300, and reach a larger area, since the underlying conveyor belt 104 is extended further out. | in an alternative embodiment, the conveyor belt 104 may be continuous.
    Furthermore, an example is shown that the damping device 207 can be an inclined shaft which can be rotated 360 degrees about the longitudinal axis L of the pipe 200, and which is rotatable about an axis A which is perpendicular to the longitudinal axis L.
    The pipe 200 opens into an end portion of the sloping shaft.
    Figures 6 and 7 show an embodiment where the apparatus 1 is adapted for use in shallow water.
    Here the tube 200 is very short and the damping device 207 which dampens the vertical drop of the loose masses is long.
    This embodiment can furthermore, as illustrated in figure 7, be particularly well suited for placing cover layers under jetties and quaysides, or other 13 places close to land.
    The damping device 207 is shown telescopically in this embodiment.
    Furthermore, the damping device 207 is here provided with a vibrator 208 to give the loose masses propulsion.
    Figure 6 shows a water hose 217 arranged to lead water down into the pipe 200. The water helps to carry the mass out of the damping device 207 when it has a very small angle 2 - and / or if the vibrator 208 alone cannot give the loose masses enough progress.
    Figures 8a and 8b show, as discussed above, the positioning propeller 330, in the technical language referred to as a thruster.
    The positioning propeller 330 comprises a propeller 335 for propulsion, a motor 333 for driving the propeller 335 and a drive shaft 338 connecting the propeller 335 and the engine 333. The positioning propeller 330 may further be provided with a gear 337. In order to be able to easily lift the positioning propeller 330 of the barge 300, the positioning propeller 330 may be provided with lifting lugs 334. These can be easily gripped with, for example, an excavator, to lift the positioning propeller 330 of the barge 300. This is useful when replacing or repairing the positioning propeller 330. Furthermore, the propeller can 335 be provided with a knife 336 for cutting, for example, ropes entering the propeller 335 (shown in Figure 8a). Figure 9 is a schematic diagram showing the barge 300 seen from above.
    Four positioning propellers 330 are mounted on the barge 300. The positioning propellers 330 are shown attached to the barge 300 by means of the coupling brackets 332. This is a preferred embodiment where two
    19 DK 2019 01401 A1 of the positioning propellers 330 are mounted on each of the short sides of the barge 300. The positioning propeller brackets 315 of the barge 300 are inclined relative to the barge 300 to obtain the desired angle of the positioning propellers 330. Because the barge 300 is rectangular, it will move more easily in a longitudinal axis direction A than in a transverse axis direction B. To provide a almost equal to the thrust force regardless of the axis direction, A, B, the positioning propellers 330 are angled so that they give a greater thrust force F in the axis direction B than in the axis direction C. In the figure, the positioning propellers 330 are angled 55 degrees relative to the longitudinal axis direction A and 35 degrees in relation to the transverse axis direction B. If the barge 300 had been square, the positioning propellers 330 would advantageously have been - angled 45 degrees. Figure 10 illustrates a laying pattern, where the apparatus 1 has started in its most retracted position at one end of the long side of the barge 300. The cover layer is first laid out in a strip closest to the barge 300. At the other end of the long side of the barge 300, the telescopic conveyor belt 104 is extended so that a second strip of the cover layer is laid out adjacent or slightly overlapping the first strip. If the long side of the barge 300 is 60 meters and the conveyor belt 104 can be telescoped up to ten meters from the edge of the barge 300, an area of 600 square meters can be covered before it is necessary to move the barge 300 itself. If the apparatus 1 is further provided with a long oblique hunt, this will contribute to further increased range.
    - The use of the verb "a include" and its various forms does not exclude the presence of elements or steps not mentioned in the claims. The indefinite articles "en", "ei" or "et" in front of an element do not exclude the presence of several such elements. The fact that certain features are listed in mutually dependent claims does not indicate that a combination of these features cannot be used to advantage.
    权利要求:
    Claims (16)
    [1]
    Apparatus (1) for laying a cover layer (2) of loose material on a subsea ground (3), the apparatus (1) comprising: - a pipe (200), with a longitudinal axis (L), for guiding the loose material from a loose material storage and to the subsea ground (3), the pipe (200) having an outlet portion (206) from which the loose material leaves the pipe (200); and - a damping device (207) arranged in connection with the outlet portion (206) of the pipe (200) for damping the vertical fall of the loose mass before the loose mass is supplied to the subsea ground (3).
    [2]
    Apparatus (1) according to claim 1, wherein the damping device (207) is an inclined shaft arranged to guide the loose material away from the outlet portion (206) of the pipe (200).
    [3]
    Apparatus (1) according to claim 2, wherein the inclined shaft is rotatable about the longitudinal axis (DL) of the pipe (200).
    [4]
    Apparatus (1) according to claim 2 or 3, wherein the inclined shaft is rotatable about an axis (A) perpendicular to the longitudinal axis (L) of the pipe (200).
    [5]
    Apparatus (1) according to any one of claims 2-4, wherein the apparatus (1) comprises two inclined shafts mounted diametrically opposite each other at the outlet portion (206) of the pipe (200).
    [6]
    Apparatus (1) according to any one of claims 2-5, wherein the inclined shaft is provided with a spreading device (210).
    [7]
    Apparatus (1) according to any one of the preceding claims, wherein the apparatus (1) further comprises a sonar.
    [8]
    Apparatus (1) according to claim 7, wherein the sonar is arranged on the attenuator (207).
    [9]
    Apparatus (1) according to any one of the preceding claims, wherein the tube (200) is telescopic.
    [10]
    The apparatus (1) of claim 9, further comprising a hydraulic winch (215) for lengthening and shortening the telescopic tube (200).
    [11]
    Apparatus (1) according to any one of the preceding claims, wherein the apparatus (1) further comprises a belt feeder (100) for feeding loose material into the pipe (200).
    DK 2019 01401 A1
    [12]
    The apparatus (1) of claim 11, wherein the belt feeder (100) is telescopic.
    [13]
    A barge (300) comprising the apparatus (1) according to any one of claims 1-12.
    [14]
    The barge (300) of claim 13, wherein the barge (300) is further provided with four positioning propellers (330) for propulsion and positioning.
    [15]
    A barge (300) according to claim 14, wherein the positioning propellers (330) are arranged in connection with each of the corners of the barge (300).
    [16]
    A barge (300) according to any one of claims 13-15, wherein the apparatus (1) is adapted to be able to move along one of the long sides of the barge (300).
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    同族专利:
    公开号 | 公开日
    NO20181539A1|2020-06-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3761852D1|1986-06-19|1990-04-12|Hollandsche Betongroep Nv|DEVICE FOR COVERING AN UNDERWATER PIPE WITH LOOSE MATERIAL, LIKE AN OIL PIPELINE AND / OR SIMILAR OBJECTS.|
    JP2779185B2|1988-11-19|1998-07-23|株式会社熊谷組|Underwater casting equipment for dry mix materials|
    KR100712372B1|2006-09-08|2007-05-02|주식회사 유일종합기술단|Base sand dropping machine for protecting underwater building|
    CN206143780U|2016-10-19|2017-05-03|中交天津港航勘察设计研究院有限公司|Closed diffusion formula water conservancy sanding device under water of environmental protection|
    法律状态:
    2020-07-13| PAT| Application published|Effective date: 20200530 |
    2021-09-17| PHB| Application deemed withdrawn due to non-payment or other reasons|Effective date: 20210417 |
    优先权:
    申请号 | 申请日 | 专利标题
    NO20181539A|NO20181539A1|2018-11-29|2018-11-29|Apparatus for laying a cover layer of loose material on an underwater ground, as well as a barge comprising said apparatus|
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