摘要:
A crane (16) for upending an elongate structure such as a monopile (28) supports elongate rigging elements that are connected to the structure at respective connection axes spaced longitudinally along the structure. At least one of those elements, of fixed length (36), extends to a first connection axis and at least one other of those elements, of variable length (34), extends to a second connection axis. A frame (24) suspended from the crane (16) supports a winch (46) that pays out the variable-length element (34) of the rigging to lengthen that element. This lowers the second connection axis relative to the first connection axis, which serves as a pivot axis about which the structure is upended.
摘要:
The present invention relates to a support structure for supporting a top structure, in particular a wind turbine, above the ground or a seabed, the support structure comprising: one single support pile having a length and a first outer diameter, the one single support pile comprising an upper part configured and intended to extend above the ground or the seabed, wherein the upper part of the support pile is configured to be connected to the top structure; a lower part configured to be in contact with the ground or seabed, wherein the support pile is configured to exert an upward vertical force on the top structure in order to carry the top structure; a plurality of foundation guides connected to the lower part of the single support pile, each foundation guide having an opening extending in a direction of the support pile.
摘要:
This invention relates to an immersion process for structures whereby the structure to be immersed is equipped with at least two groups of floats each comprising at least two individual floats in which, by using elongated floats attached vertically to the structure to be immersed and capable of being ballasted or unballasted by the filling or emptying of a central compartment forming the principal ballast, an operation is carried out alternately on each one of the floats in each group consisting either in the ballasting of the said float followed by unballasting and by the simultaneous release of a given length of the chain or cable connecting the structure to the float, or solely in the release of a given length of the chain or cable, the associated float being empty and its position in relation to the structure being fixed during this operation, and in which this operation is carried out simultaneously or alternately on each group of floats until the structure is immersed in the proper position. Both the safety and the performance of the immersion system are thus improved.
摘要:
The invention relates to reversible air-punching mechanisms for making holes in soil by compaction. According to the invention, the mechanism comprises a hollow housing in which a striker reciprocated by compressed air, strikes the housing and thus moves it through the ground. The compressed air is delivered into the working chambers through an air-feed bushing which is provided with two rows of ports getting alternately in line with the corresponding rows of ports in the hollow slide valve accommodated in the bushing as said slide valve turns around its longitudinal axis. For turning the slide valve, it is connected with the bushing by a projection which moves along an enclosed shaped recess during the reciprocating motion of the slide valve when the mechanism is reversed by cutting off momentarily the supply of compressed air to the mechanism.
摘要:
A method of installing a structure on a bed of a sea, estuary or river from a floating installation vessel is described. In such a method a plurality of attachment piles and corresponding installation rigs are attached to the structure prior to deployment of the structure. In addition, respective umbilical control cables are connected to the installation rigs prior to deployment of the structure. The structure is deployed from a floating vessel to a bed of a sea, estuary or river, such that, when the structure is located on the bed, the umbilical control cables do not support the structure or installation rigs. A single installation operation for each attachment pile is performed, in which operation an installation rig is activated so as to install fully the corresponding attachment pile in the bed, without removal of the umbilical control cable or the installation rig therefrom.
摘要:
For driving of ramming parts under water, a first ramming device is suspended on the supporting element and a second ramming device is suspended on a further supporting element, a submergible electrohydraulic drive unit is located laterally near or under one of the ramming device and connected with both ramming devices by hose conduits, the ramming devices with the drive unit are lowered so that at least one ramming device is placed on one ramming part and after driving it in over a predetermined path it is transferred to another ramming part, while the other ramming device drives further the first ramming part or a further ramming part, and both ramming devices are driven one after the other or simultaneously with one another by the same drive unit.
摘要:
A rotary engine including a housing having a special planetary curved surface opening and including a drive shaft interconnected with a belt by a plurality of drive rollers. Chambers are formed between rotating planetary rollers which move within the opening and the belt. The belt has segmented lobes formed thereon which are moved about the drive rollers to compress the fluid in the chambers cyclically to perform work. An internal combustion rotary engine is disclosed in which a spark plug is secured to the housing at the point in the cycle where maximum pressure is developed in the chambers.
摘要:
An installation for the release of floats supporting by individual cables a structure submerged in an aqueous medium, comprising attachment means fixed on the structure and co-operating with one end of said cable, the other end carrying the float, liberating means co-operating with said attachment means, and a control station for said liberating means, wherein the first of said liberating means is connected to a principal control line connected to the control station, the subsequent liberating means being connected together in such manner that they are automatically and successively actuated after said first liberating means has been actuated via the principal control line, the principal control line and the connections between successive liberating means consisting of fluid pressure lines or electric cables.
摘要:
A pile loading system for piles which are driven into the earth under a body of water wherein a buoyant vessel such as a barge or system of barges, is pinned to at least one spud positioned in the earth below the water and a rigid jacking frame is mounted on the vessel to extend above a pile. The vessel is ballasted, as by flooding, to impose a compressive load on the spud and a jack is then positioned between the pile and the frame and is actuated to transfer the load from the spud to the pile. The load may be applied for the purpose of testing the pile or for driving it further into the earth.