Abstract:
Traffic barrier module for protecting workers and/or equipment from errant vehicles and/or for rerouting traffic, wherein the traffic barrier module comprises at least two drives for moving the barrier module along a road surface, wherein each drive unit comprises at least two sets of wheels or tracks, independently drivable for orienting a driving direction of the drive, and a support for supporting the barrier module on the drive, wherein a lift module is provided for each drive to lift the relevant barrier module relative to said drive.
Abstract:
The invention relates to a spud carriage biasing system comprising a first hydraulic tensioning cylinder (10); a first low pressure tensioning accumulator (15) in fluid communication with a first pressure chamber (11) comprised in the first cylinder (10); a second hydraulic tensioning cylinder (20); and a second low pressure tensioning accumulator (25) in fluid communication with a second pressure chamber (21) comprised in the second cylinder (20). The biasing system (1) further comprises two sets of two connected hydraulic cylinders (30, 40, 50, 60). The first set comprises a third hydraulic cylinder (30) and a fourth hydraulic cylinder (40), wherein a piston rod (33) of the third hydraulic cylinder (30) is connected with a piston rod (43) of the fourth hydraulic cylinder (40). The second set comprises a fifth hydraulic cylinder (50) and a sixth hydraulic cylinder (60), wherein a piston rod (53) of the fifth hydraulic cylinder (50) is connected with a piston rod (63) of the sixth hydraulic cylinder (60). Further, a third pressure chamber (31), which is part of the third hydraulic tensioning cylinder (30), and a fifth pressure chamber (51), which is part of the fifth cylinder (50) are in fluid communication with the first pressure chamber (11), which is part of the first cylinder (10), and a fourth pressure chamber (41), which is part of the fourth cylinder (40) and a sixth pressure chamber (61), which is part of the sixth cylinder (60) are in fluid communication with the second pressure chamber (21).
Abstract:
The invention relates to an assembly of a screen panel and a screen driving device for driving the screen panel into the ground, wherein the screen panel comprises parallel coupling edges and a geotextile extending between the coupling edges, wherein multiple screen panels are coupled in series at the coupling edges to form a piping screen, wherein the screen driving device comprises a front plate and a back plate that extend parallel and opposite to each other to form an intermediate space between the facing main surfaces of these plates, and a supply of pressurized water or air to insert water or air into the intermediate space, wherein the screen panel is inserted between the front plate and the back plate with the geotextile in the intermediate space.
Abstract:
Dumping vessel for dumping sinking particles like sand, blocks, rocks or stones onto the bottom of a lake or sea, comprising a floating hull and a fall pipe pending downwards towards the bottom, wherein the fall pipe comprises a lower dumping section, at least two hoisting cables that connect the dumping section with the hull, and a series of fall pipe sections between the hoisting cables that are stacked onto each other on the dumping section, wherein multiple fall pipe sections each comprise a tube and an upper connector and a lower connector at the ends of the tube, wherein the upper connector and the lower connector of subsequent fall pipe sections engage each other, wherein these fall pipe sections comprise at the upper connector a closure for confinement of one of the hoisting cables.
Abstract:
Method for protecting workers and/or equipment from errant vehicles and/or rerouting traffic on a road surface, using a series of connected barrier modules, each barrier module provided with at least one drive, wherein the series of barrier modules are supported on the road surface by their drives only, at least during use as a temporary traffic barrier.
Abstract:
The invention relates to a mining system for mining minerals in a deep sea, wherein the mining system comprises a submerged mining assembly that has a station that is suspended from a vessel, a container for shuttling between the station and the vessel, a mining head for mining minerals, an intermediate frame that hingeably extends between the mining head and the station, and a transport arrangement for transporting mined minerals from the mining head into the container, wherein the station, the intermediate frame and the mining head are arranged in series along a longitudinal axis, wherein the mining head comprises a first propulsion arrangement to move the mining head in a direction transverse to the longitudinal axis, and wherein the mining head comprises a first intake aperture and a second intake aperture that is opposite to the first intake aperture for taking in minerals from the seabed.
Abstract:
The invention relates to a cooling system and a method for cooling the landfall of a continuous subsea power cable, wherein the cooling system comprises a first sleeve for receiving an intermediate section of the continuous power cable, wherein the first sleeve defines a first volume that extends around the intermediate section, wherein the cooling system is provided with a second sleeve that defines a second volume separate from the first volume, wherein the cooling system is provided with a first end sealing member at a first end, wherein the first end sealing member comprises a first sealing part and a second sealing part for sealing the first volume and the second volume, respectively, at the first end, wherein the cooling system further comprises a connector that connects the first volume and the second volume in fluid communication at or near the first end, wherein the second sleeve is arranged to surround the first sleeve about the longitudinal axis, wherein the connector is formed by an aperture in the first sleeve at or near the first end where the second sleeve surrounds the first sleeve, wherein the aperture connects the first volume and the second volume in fluid communication. This ensures that the subsea cable with its double mantel cooling systems does not have any protruding cooling fluid connections so that it can be drawn without any problems through the landfall drill hole.
Abstract:
Cladding element and dam having such cladding element Cladding element for a dam to protect it against erosion by the water against which the water dam forms a barrier, wherein the cladding element comprises a head part, a foot part and, located therebetween, a body part, wherein the head part and the foot part have a non-circular cross-section, viewed in a plane at right angles to a body axis X-X through the cladding element, wherein the or each unround cross section has at least one greatest inscribed dimension or long axis A 1 , and at least one smallest inscribed dimension or short axis A 2 , wherein the head part and the foot part are placed with respect to each other such that viewed in top plan view the long axes A 1 ,A 2 of the respective cross sections include an angle.
Abstract:
Trailing suction hopper dredger, comprising a hopper and a suction pipe extending from the hopper, wherein a suction head is provided at an end of the suction pipe, and an outlet at an opposite end for disposing dredging sludge into the hopper. At least one jet pipe is connected to the suction head for jetting water into a suction chamber of the suction head through at least one jet and a recycle line is provided between the hopper and the suction head for feeding effluent from the hopper to the suction head. The recycle line has at least one outlet at side of, preferably at opposite sides outside the suction chamber, such that effluent flowing out of the said outlet is sucked into the said suction chamber and/or at least one outlet, opening into the suction chamber of the suction head, near a trailing end of the suction head.
Abstract:
The invention relates to a mining system for mining minerals from a seabed of a deep sea, wherein the mining system comprises a vessel floating at the water surface and a submerged mining assembly that is suspended from the vessel, wherein the mining assembly comprises a station above the seabed, a cable that suspends the station from the vessel, a mining head for mining minerals from the seabed, an intermediate frame that extends between the mining head and the station, wherein one end of the intermediate frame is hingeably connected to the station and the opposite end of the intermediate frame is hingeably connected to the mining head, a container that is arranged to shuttle between the station and the vessel, and a transport arrangement between the mining head and the station for transporting the mined minerals from the mining head into the container.