31 results about "Dry dock" patented technology

The present application relates to a semi-prefabricated construction method for large deep-water caissons in a shallow dock. Concrete for a caisson base slab is poured in a dry dock, prefabricated slabs and steel trusses are mounted around the base slab to form an open box structure, then a box is towed to a bridge site, the construction of the caissons is completed by means of cast-in-place concrete pouring on the water, and finally the caisson is filled with water and sinks into place. The present application can greatly reduce the requirements for the excavation depth of the dry dock, and decrease the dredging workload of an undocking and floating channel, thereby reducing construction costs, and also facilitating shortening the construction period of the caissons.

This invention relates to the technical field of construction engineering, and in particular to a prefabrication and installation method for a dry dock entrance, comprising the following steps: Step A, construction of an underground anti-seepage wall in the dry dock entrance area, layered and segmented construction of the dry dock entrance concrete, one-time pouring of concrete for the lower part of the dock sill and one-time pouring of concrete for the main body of the dock pier; Step B, design and prefabrication of dock sill stones and prefabricated dock pier stones; Step C, installation of the prefabricated dock sill stones and prefabricated dock pier stones. This invention features prefabricated dock sill stones and dock pier stones used in the construction of the dry dock entrance. The layered and segmented pouring method during construction effectively controls temperature cracks in the main concrete of the dry dock entrance; the stainless steel panels inlaid on the contact surfaces of the prefabricated dock sill stones and prefabricated dock pier stones with the dock gate greatly improve the flatness of the sealing surface; furthermore, the prefabricated structure effectively simplifies the construction process and reduces construction costs.

This invention discloses a method for ship cutting and water-based docking, comprising the following steps: marking a cutting baseline on the hull to be modified in a dry dock; cutting the hull according to the cutting baseline and inspecting the cutting quality of the hull; pre-cutting the intermediate half of the hull and inspecting the pre-cut parts; simulating the joining of the cut hull and the intermediate half; marking joining reference marks on the cut hull and the intermediate half based on the joining reference marks; adjusting the buoyancy of the bow half and the intermediate half after cutting based on the joining reference marks; controlling the intermediate half's support on the corresponding support in the dry dock after adjusting the buoyancy of the bow half and the intermediate half; and controlling the bow half's support on the corresponding support in the dry dock after the intermediate half has been controlled. This invention improves the control level of ship cutting and joining, shortens the joining construction time, and improves efficiency.

This invention relates to a graded trigger-type crash barrier and crash prevention method for dry dock boarding ramps, belonging to the technical field of dry dock boarding ramps. The crash barrier includes uprights and crossbeams. A crash prevention structure is installed on the crossbeams, comprising: a mounting plate with a locking part on the back for locking onto the crossbeam; an outer airbag connected to the front of the mounting plate, which is inflated under normal conditions to form a first-level crash buffer; an inner airbag connected to the front of the mounting plate and located inside the outer airbag, which is deflated under normal conditions; and a high-pressure gas cylinder installed at the locking part, which is connected to the inner airbag via a pipeline. A pressure switch is installed on the pipeline, and the pressure detection end of the pressure switch is located inside the outer airbag. When the outer airbag is impacted and the internal pressure rises to the trigger threshold of the pressure switch, the pressure switch opens the pipeline, and the high-pressure gas cylinder inflates the inner airbag, causing the inner airbag to expand and form a second-level crash buffer.

The invention relates to the technical field of dry dock water stopping, in particular to a two-way water stopping structure, a dock entrance water stopping system and a using method. The second vertical grooves are formed in the two ends of the dock gate, and the second vertical grooves and the first vertical grooves are oppositely arranged; and the water stop gate is located between the first vertical groove and the second vertical groove, and the water stop gate is used for abutting against the side wall of the first vertical groove and the side wall of the second vertical groove. The dock gate and the docking block can be subjected to water stopping when water is dry in the dock and water is stored in the dock, the two-way water stopping effect is achieved, compared with a traditional mode that four water stopping steel gates need to be arranged, only two water stopping gates need to be arranged, the number of water stopping parts is reduced, the operation process is simplified, and the construction operation efficiency is improved.

The application discloses a digital half-ship closing control system, which comprises a dry dock support system, a data acquisition module and a central control system, the data acquisition module is in electrical connection with the central control system through a communication network; the central control system comprises a data input module, a data processing and analysis module and an output module; the data input module is used for receiving real-time data collected by the data acquisition module; the data processing and analysis module is used for calculating deformation error and stress distribution of a half-ship and generating adjustment instructions based on the calculation results; and the output module is used for outputting the adjustment instructions to the dry dock support system and transmitting adjusted data to the data input module. The digital half-ship closing control system and the closing method realize real-time monitoring, dynamic feedback and automatic adjustment of a closing process.

The present application relates to the technical field of immersed tube tunnel, and particularly relates to a large-scale immersed tube in-dock turning method, which comprises the following steps: S1: water is poured into a dry dock to make a large-scale immersed tube float up, and a large-scale immersed tube is subjected to a cable operation; S2: the large-scale immersed tube is subjected to a first transverse movement to move from a shallow dock area to a deep dock area turning position; S3: the large-scale immersed tube is subjected to turning and movement at multiple different point positions in the deep dock area, and is subjected to cable adding, cable changing and cable releasing to complete a turning operation of the large-scale immersed tube; and S4: the large-scale immersed tube is subjected to transverse movement to a dock-out axis after turning. Through the turning operation at multiple different point positions in the deep dock area, the turning of the large-scale immersed tube in the deep dock area is completed without the need of expanding the deep dock area, and the problem that a large-scale immersed tube is extremely difficult to turn in a dock due to the fact that a conventional dry dock does not reserve enough space for the large-scale immersed tube to turn in the dock during construction design is solved.

The application discloses a ship undocking control device and method based on digital twinning, equipment and medium, and belongs to the field of ship launching, towing out or entering a dry dock. The device comprises a digital twinning image construction module, which is used for acquiring a dock model and constructing a digital twinning image of the dock according to the dock model; a water level data acquisition module, which is used for acquiring water level data in the dock through a sensor during the process of water filling or water draining of the dock; and a dynamic digital twinning effect drawing generation module, which is used for combining the water level data into the digital twinning image to obtain a dynamic digital twinning effect drawing in the process of water filling or water draining and displaying the dynamic digital twinning effect drawing. According to the technical scheme, the dynamic digital twinning effect drawing can be made according to the real-time water level in the dock, the process of water filling or water draining of the dock can be observed in real time through the displayed dynamic digital twinning effect drawing, the process of water filling or water draining of the dock is more directly displayed, and the control efficiency of the ship entering or leaving the dock is improved.

The invention provides a bonding method and tool for a sealing ring of a sealing device and application, and relates to the field of structural sealing, and the bonding method comprises the following steps that S1, a bonding surface is pretreated; s2, assembling a tool; s3, a heating sealing ring assembly is installed; s4, a sealing ring is fixed; s5, a sealing ring is pressed in and fixed; and S6, carrying out heat vulcanization bonding. Two groups of clamping plates and two groups of heating plates are fixed on the bottom plate, and heating holes and detection holes are formed in the heating plates. The bonding tool and method for the sealing device sealing ring are applied to bonding of a ship stern shaft sealing device, the stern shaft sealing ring can be accurately positioned and installed under the condition that no ship accessories are disassembled, operation can be conducted under the condition that a ship berths and does not enter a dock, huge cost can be saved, and the bonding tool and method are economical and practical. According to the method, the bonding efficiency and reliability are greatly improved, and the overall maintainability of the stern shaft sealing device is improved.

The application provides a cofferdam type construction structure of a conical prefabricated caisson foundation and a construction method thereof. The conical prefabricated caisson foundation comprises a conical bottom caisson constructed in a dry dock, and a conical side wall coaxially arranged in a central region and constructed in a wet dock. A water stop connecting member is arranged on the top of the conical bottom caisson and surrounds the periphery of the conical side wall. A cofferdam main body is arranged on the top of the water stop connecting member, and the cofferdam main body comprises a bottom initial section which is installed in the dry dock. By using the construction scheme of sitting on the bottom and increasing the height in the wet dock, the safety risks of overturning, failure of mooring system and damage of facilities during the construction of the traditional floating pouring method in the typhoon period are fundamentally solved, and the stability and safety of the caisson height increasing process are significantly improved. By arranging the cofferdam main body which is installed in stages, the stability of the caisson during the two floating processes of floating to the wet dock and floating to the pier position is ensured, and a whole-process dry operation environment is provided for the caisson sitting on the bottom and increasing the height in the wet dock.

The invention discloses a grouting method for a reserved water stop groove of a force transfer plate of an immersed tube bottom plate, and belongs to the technical field of immersed tube tunnel construction. The method comprises the steps that before dry dock irrigation, a plurality of Q-type water stop belts are arranged on a force transmission plate in the transverse direction of a pipe joint, the Q-type water stop belts are sequentially arranged in parallel in the axial direction of the pipe joint, and a reserved water stop groove is formed between every two adjacent Q-type water stop belts; each reserved waterstop groove is transversely divided into at least one grouting subarea along the pipe joint, a grouting pipe is correspondingly arranged in each grouting subarea, and an embedded section of the grouting pipe is fixed on the force transmission plate and is parallel to the Q-shaped waterstop belt; after the final joint end pipe joint is installed, a gas injection test is conducted on the grouting pipe, and permeability is ensured; and grouting is conducted in sequence according to the preset grouting sequence of the reserved water stop grooves, and grouting is completed in sequence according to the preset grouting subarea grouting sequence in each reserved water stop groove. According to the grouting method for the reserved water stop groove of the force transfer plate of the immersed tube bottom plate, the waterproof reliability can be improved, and the long-term waterproof durability and the construction quality are guaranteed.

The invention relates to the technical field of dry dock construction, in particular to a dock entrance cofferdam structure, a dry dock system and a construction method.The cofferdam structure comprises an earth rock cofferdam arranged in a shallow water area, a prefabricated caisson arranged in a deep water area and a dock gate, one end of the earth rock cofferdam is connected with a revetment, and the other end of the earth rock cofferdam is connected with the prefabricated caisson; the end, away from the earth rock cofferdam, of the prefabricated caisson abuts against the dock gate, the end, away from the prefabricated caisson, of the dock gate abuts against the retaining dam, the earth rock cofferdam is used in a shallow water area to reduce the cost, the prefabricated caisson is used in a deep water area to reduce the amount of earth and stones in the deep water area, the cost is reduced, and the ecological influence is relieved. The original dock gate is utilized, normal use of the dock entrance is achieved by opening or closing the dock gate, the requirement for recovery after the dock entrance is widened is met, further, the waterproof curtain blocks the water seepage path of water in the earth rock cofferdam, the waterproof effect of the earth rock cofferdam is improved, and the water stop performance of the cofferdam structure is guaranteed.

The present application belongs to the technical field of immersed tunnel engineering, and particularly relates to a soft stratum immersed tunnel dry dock foundation pit anchor cable force prediction method and system, comprising the following steps: S1: collecting relevant data of dry dock soft stratum, anchor cable and pumping and storage water circulation effect; S2: deriving a soft stratum creep model based on a nonlinear generalized Kelvin body model; S3: simulating and establishing an anchor cable axial force relaxation model according to the coupling effect of the anchor cable and the soft stratum; S4: constructing an anchor cable axial force evolution calculation equation according to the anchor cable axial force change under the pumping and storage water circulation effect; and S5: fitting and optimizing inherent coefficients in the axial force relaxation model according to test monitoring data. Through the anchor cable axial force change under the pumping and storage water circulation effect, an anchor cable axial force curve of the pumping and storage water disturbance process is established, which more truly reflects the actual stress condition of the anchor cable; and then the inherent coefficients in the axial force relaxation model are fitted and optimized through the monitoring data under the pumping and storage water circulation effect.

This invention relates to a floating barge loading and undocking method. By adjusting the draft of the wind turbine foundation, the draft of the first corner is made deeper than that of the two second corners, and the drafts of the two second corners are balanced. The draft of the first corner is higher than the top surface elevation of the support pier. This ensures that during the ascent of the semi-submersible barge, the first corner contacts the corresponding support pier on the semi-submersible barge first than the two symmetrical second corners, thus ensuring stress safety. When the corresponding support pier on the semi-submersible barge contacts the first corner, the ascent speed of the semi-submersible barge is reduced. The semi-submersible barge is controlled to rise at the reduced ascent speed until the other two second corners simultaneously contact the support pier at the widened stern of the semi-submersible barge. This further reduces the stress generated by the second corners when they subsequently contact the corresponding support pier on the semi-submersible barge, making the stress safety even better. This ensures the overall lateral balance of the semi-submersible barge and the wind turbine foundation after floating barge loading, and improves the stability control and safety of subsequent semi-submersible barge undocking and transport.

This invention discloses a multi-functional robot for ship maintenance and anti-piracy defense, belonging to the field of marine special robots and intelligent ship operation and maintenance technology. This multi-functional robot comprises two types of isomorphic modular robots: one type is a ship maintenance robot, equipped with underwater visual recognition, hull rust and dirt removal, flexible grinding, and localized spot coating functions, used for routine underwater anti-corrosion and anti-fouling maintenance of ships; the other type is a cutting and welding anti-piracy defense robot, integrating underwater cutting and welding mechanisms, capable of completing underwater damage repairs of ships, while simultaneously using the cutting mechanism to cut and stop pirate boarding boats, external components, and climbing devices, thus possessing both maintenance and anti-piracy defense functions. This invention adopts a robot division of labor and collaborative design. The maintenance end adopts a multi-machine collaborative operation mode, which is highly compatible with the self-developed multi-machine collaborative anti-corrosion and anti-fouling process. The maintenance and defense end realizes the integration of cutting, welding and anti-piracy functions. It has a reasonable structure, strong practicality and easy deployment. It can complete the entire process of underwater operation and maintenance and offshore security operations without stopping the ship or entering the dry dock. It is applicable to underwater maintenance and security defense of military and civilian ships throughout the entire life cycle and has significant market application value and creativity.

The invention relates to a dry dock for building and / or dismantling a navel structure, including a substantially horizontal floor that is located below a predetermined top level, dock side walls extending from the floor to the top level, a closable access being provided in a said side wall for moving a navel structure into the dock

The invention discloses a self-preloading dock entrance supporting system and a construction method thereof, and belongs to the technical field of engineering supporting. According to the technical scheme, a steel pipe main support, a steel enclosing purlin and a latticed column form an assembly type frame structure, one end of the steel pipe main support is a fixed end, the other end of the steel pipe main support is a movable end, the movable end uses an intelligent pressurization node, and a sliding type support and an automatic prestress applying system are integrated. The sliding support achieves axial telescopic adjustment through a sliding guide rod and a limiting device, and the automatic prestress applying system comprises an intelligent control unit, a hydraulic module and a stress sensing system. The construction method comprises the steps of concrete support pouring, steel enclosing purlin and latticed column mounting, prefabricated support unit hoisting, prestress applying and monitoring, multi-layer support arrangement and the like. The temporary supporting device has the beneficial effects of being reasonable in structure, convenient to install, safe, efficient and suitable for temporary supporting in complex environments such as dry docks and foundation pits, and the construction efficiency and the structural safety are improved.

The invention discloses an ultra-deep water immersed tube tunnel tube joint active supporting and leveling construction method which comprises the following steps: before an immersed tube joint sinks, active supporting and leveling systems are symmetrically arranged at the vertex angle of the inner side of the immersed tube joint, a reserved pit hole is dug in a dry dock in advance to serve as an operation space for mounting a cushion block, and the immersed tube joint sinks after the cushion block is mounted; an active supporting and leveling system is used for automatically adjusting the posture of the immersed tube joint to a design value, mechanical operation and automatic control of the whole immersed tube installation process are achieved, manual diving operation is not needed, the construction efficiency and the installation precision are remarkably improved, meanwhile, cost and labor intensity are reduced, and then a permanent foundation is backfilled and constructed. The part, exceeding the bottom plate of the immersed tube section, of the active supporting and leveling system is removed, waterproof grease is replaced with waterproof mortar, and finally pressure bin concrete is laid on the bottom plate in the immersed tube tunnel, so that immersed tube installation is completed, the method is suitable for the water depth of more than 100 m, and the application range of post-laying method construction is expanded.

This application discloses a method for replacing the main hinge bearing of a stern door of a ship docked at a wharf, comprising the following steps: S1 Support positioning: A support platform is set up in the area corresponding to the stern door of the ship docking position, and the ship's stern door is opened and smoothly placed on the support platform; S2 Reference locking: A limiting support fixture is installed at the hull end of the main hinge of the stern door; S3 Pre-processing disassembly and inspection: The peripheral auxiliary structures of the main hinge are removed; S4 Non-destructive disassembly: After calibrating the coaxiality of the main hinge hole, the main shaft and the old bearing to be replaced are sequentially pushed out and removed from the hinge eye plate; S5 Bearing reinstallation: The new bearing is smoothly pressed into the designed installation position of the hinge eye plate using a special pressing fixture in conjunction with a hydraulic jacking fixture; S6 Reset and acceptance: The main shaft is inserted into the inner hole of the new bearing, and the bushing, sealing structure, and peripheral auxiliary structures of the main hinge are sequentially reset and installed. This method eliminates the reliance on dry docks and large-tonnage floating cranes, significantly reducing maintenance costs.

The present application relates to a kind of inland river immersed tube prefabricated dry dock dock mouth combination system dismantling construction method, belong to dry dock construction technical field.The dismantling construction method includes the following steps: from bottom to top, gradually fill water in the dock, gradually remove support structure in the process of gradually filling water;Boat side is equipped with the barge of rotary drilling, and it is parked near the mixing pile support wall outside the dock, the side of barge equipped with rotary drilling is towards mixing pile support wall, and rotary drilling equipped with barge is used to break mixing pile support wall and plastic concrete impervious wall;Backfill sand and super high concrete in each steel pipe pile in steel pipe pile support wall are taken out using rotary drilling equipped with barge, and steel pipe pile is cut underwater at gravel bed construction elevation, and the cut part of steel pipe pile is lifted away using crane ship.The dismantling construction method realizes the efficient, low-risk, low-cost dismantling of complex dock mouth combination system.

The invention relates to the field of marine technical industry, in particular to a floating type draught fan foundation launching platform and a floating type draught fan foundation launching method. The floating type draught fan foundation launching platform comprises a bearing base, a launching floating platform and a driving unit, the driving unit comprises a first control component, a second control component and a third control component, the first control component comprises a bearing sliding way and a transmission assembly, and the second control component comprises a connecting pulley and a tail pulley. And the third control component comprises a bearing guide rail and a guide wheel, and the floating type fan foundation is converted into a floating state from a supporting state through the first control component, the second control component and the third control component. In the launching process of the floating type draught fan foundation, controllable progressive load transfer is achieved, posture constraint is standardized, constraint of the deployment period of a dry dock or a large semi-submerged ship is avoided, the construction period flexibility and the parallel construction capacity are improved, and the method is suitable for deployment of a large-scale offshore wind plant.

The present application relates to an on-water cast-in-place construction method for a large deepwater caisson, comprising: first casting a caisson bottom slab in a dry dock, and mounting a double-wall steel cofferdam on the bottom slab; then injecting water into the dock to float the bottom slab and tow same to a pier site; using the steel cofferdam as a temporary water blocking structure, and using a cast-in-place method to construct a caisson; and once the construction of the caisson is completed, sinking and seating the caisson in place by means of water injection. The present application can greatly reduce the requirement on the excavation depth of a dry dock, and can also reduce the dredging workload of an undocking and floating-towing channel, thereby reducing construction costs, and shortening the construction period of a caisson.

This invention relates to the field of shipbuilding and marine engineering equipment manufacturing technology, and discloses a modular transfer tooling for ultra-large ship sections in a dry dock. The tooling includes a connecting platform, a support plate fixedly connected to the outer side of the connecting platform, multiple wheels rotatably connected to the bottom of the support plate, a slide rail fixedly connected to the top of each wheel, a slider slidably connected to the outer side of the slide rail, and a splicing assembly fixedly connected to the outer side of the support plate. The splicing assembly is used to achieve rapid docking and separation between multiple devices, guide and align adjacent devices, and limit and constrain the connection position during the splicing process. A support assembly is fixedly connected to the outer side of the slider, and the support assembly is used to support the ship sections. This invention achieves rapid docking and mechanical locking of multiple connecting platforms through the splicing assembly. During the docking process, docking posts are used for initial guidance and positioning, and the first splicing block, second splicing block, extrusion block, and locking plate work together to achieve this.

The invention relates to a hydrometer type in-service floating dock gate sealing surface on-site maintenance method, which belongs to the technical field of dock gate maintenance, and comprises the following steps of: pumping water in a dock, manufacturing a leaning grid, a support frame, a support seat and a wood joist in the dry dock, and placing the leaning grid, the support frame, the support seat and the wood joist at appointed positions in the dry dock; water is injected into the dry dock, the in-service hydrometer type floating dock gate is detached from a dock entrance and dragged into the dock through a tug, and the in-service hydrometer type floating dock gate is made to be located above the designated position and berthed; the other dock gate is installed at the dock entrance of the dock; water in the dock is drained, so that the hydrometer type floating dock gate sinks and is piled on the supporting frame, the supporting seat and the wood joists, and the hydrometer type floating dock gate leans against the leaning grid; the water in the dock is pumped out again, and then the maintainer conducts on-site maintenance on the sealing face of the hydrometer type floating dock gate in the dock; checking whether the sealing surface is repaired or not by using a simulation tool; and the dock gate installed at the dock entrance of the dock is withdrawn, and the hydrometer type floating dock gate with the repaired sealing face is installed at the dock entrance of the dock again.

This invention discloses a grouting method for pre-reserved water-stop grooves in the force transmission plate of an immersed tunnel base plate, belonging to the field of immersed tunnel construction technology. The method includes: before filling the dry dock with water, multiple Q-shaped waterstops are installed transversely along the tunnel section on the force transmission plate. These Q-shaped waterstops are arranged parallel to each other along the tunnel section's axial direction, forming pre-reserved water-stop grooves between adjacent Q-shaped waterstops; each pre-reserved water-stop groove is divided into at least one grouting zone along the tunnel section's transverse direction, and a grouting pipe is installed correspondingly in each grouting zone. The pre-embedded section of the grouting pipe is fixed to the force transmission plate and is parallel to the Q-shaped waterstops; after the final joint end tunnel section is installed, an air injection test is performed on the grouting pipe to ensure permeability; grouting is performed sequentially according to the preset grouting sequence of the pre-reserved water-stop grooves, completing the grouting in each pre-reserved water-stop groove according to the preset grouting zone grouting sequence. The grouting method for pre-reserved water-stop grooves in the force transmission plate of an immersed tunnel base plate provided by this invention can improve waterproofing reliability and ensure long-term waterproofing durability and construction quality.

The invention discloses a caisson dry dock structure and a construction method, and relates to the related field of caisson dry docks, the caisson dry dock structure comprises a caisson dry dock structure main body and a drainage system arranged on one side of the caisson dry dock structure main body, the caisson dry dock structure main body comprises a caisson dry dock wall body poured on a foundation, and a dock gate is arranged on one side of the caisson dry dock wall body in a lifting mode; the drainage system comprises a water storage part fixedly installed on the top of the dry dock chamber, the top of the water storage part is connected with a sewer pipe through a conveying pump, and a plurality of sets of water suction pipes are arranged on the outer side of the upper end of the water storage part and used for absorbing and discharging water seepage in the dry dock chamber. According to the caisson dry dock structure and the construction method, the caisson dry dock wall body and the dry dock chamber form a stable main body, the dock gate, the crawling frame and the lifting piece meet the construction requirement, the 1-degree to 2-degree inclined top face of the dry dock chamber is matched with the water accumulation ditch to achieve efficient water collection, the sand layer and the geomembrane layer achieve the dual-enhanced anti-seepage effect, the water seepage and sand carrying amount is reduced, and the overall structure stability is high.

The invention discloses a prefabricated structure and method for a caisson in a dry dock, and relates to the field of caissons in the dry dock. A middle ring wall assembly is arranged at the middle end of a bottom pouring base layer; a positioning column assembly is arranged on the outer side of the bottom pouring base layer, and an outer partition wall assembly is installed on the outer side of the positioning column assembly. According to the prefabricated structure and method for the caisson in the dry dock, the process of pouring the surface of the top layer of the caisson in the whole dry dock is achieved by firstly assembling the laminated slab assemblies along the upper ends of the outer partition wall assemblies and then pouring the surfaces of the assembled laminated slab assemblies after stable bearing and butt joint. The step-shaped inclined structure at the upper end of the positioning column assembly is matched for effective sealing pouring bearing treatment, integral pouring is achieved through the laminated slab assembly and the pouring layer, meanwhile, the technical effect of no construction joint is guaranteed, the defect that follow-up dismantling of traditional all-round scaffold bearing pouring is difficult and tedious is overcome, and the construction efficiency is improved. And in the process of top plate pouring, the supporting stability of the side is guaranteed.

The application discloses a maintainable pod structure, which comprises a pod, inner cavity sealing assemblies arranged at a driving end and a non-driving end of the pod respectively, a bearing assembly, an outer cavity sealing assembly and an outer cavity air bag assembly arranged at the driving end of the pod, and a sealing maintenance guarantee assembly, which can realize the limiting of a stator and a rotor when the outer cavity sealing assembly is extracted for maintenance, and can provide the extraction and plug-in recovery function of the outer cavity sealing assembly and the bearing assembly; the structure of the application can guarantee the replacement and maintenance of the rotating sealing of a propelling module of the pod at sea, saves the cost of the ship in the dry dock for maintenance, and improves the maintainability of the pod.

The utility model discloses a multifunctional tension leg deepwater wind power platform, and relates to the technical field of floating type offshore wind power generation platforms. Comprising a multifunctional caisson fixing foundation, multifunctional elastic mooring tension legs and a multifunctional floating foundation. The multifunctional elastic mooring tension leg comprises a multifunctional elastic mooring support, a tension leg middle connector, a self-floating mooring steel pipe and a tension leg fixing connector. The multifunctional caisson fixing foundation comprises three ballast tanks and tension leg fixing joint supporting beams. The multifunctional floating foundation comprises three floating boxes, two ballast tanks, a truss tower, a lifting type stand column, a lifting type wind driven generator tower column and a multifunctional elastic mooring support supporting beam. Various prefabricated parts can be divided into two groups to be assembled in the same dry dock and then are towed out of the sea in a self-floating mode, only three tugs, an air lift mud suction tool, an air compressor and common construction equipment of a high-pressure water pump are needed in the offshore installation period, and therefore engineering investment can be greatly reduced while safety and reliability are improved.

The invention belongs to the technical field of ship engineering, and particularly discloses a novel efficient dry dock ship guiding system which comprises ship guiding systems arranged on dock walls on the two sides of a dock, the ship guiding systems are symmetrically arranged relative to the center line of the dock, rails are arranged below the ship guiding systems, the number of the ship guiding systems on each side is two, and the two ship guiding systems share one rail. Each ship guiding system comprises a winch, a driving ship guiding trolley, a follow-up ship guiding trolley, a guide wheel system, a steel wire rope body and a tensioning device, the ship pulling efficiency is doubled, meanwhile, one box-shaped beam track is shared, the ship guiding system is suitable for a large dock, two ships can be controlled to enter and exit from the dock in the same tide period, the time for carrying cables twice between a towing hook and a ship cable is omitted, and the ship pulling efficiency is improved. And the docking speed of front and rear ships can be independently controlled, so that the docking frequency is greatly improved.