51 results about "Tonnage" patented technology

The invention relates to the technical field of port operation state sensing and monitoring, and particularly discloses a port operation state sensing and monitoring system based on a data center, which monitors a wind speed value and a visibility value at each current time point in real time through a micro weather station array, and synchronously obtains tidal phase data of an observatory. Comprehensively generating multi-dimensional meteorological data in a set time period; dynamically calculating the berthing safety coefficient of the target ship through a multi-dimensional constraint condition in combination with the load tonnage of the target ship; according to the target ship berthing safety coefficient, a dynamic ship berthing strategy of the target ship is generated; through comprehensive application of multi-dimensional meteorological data acquisition, berthing safety coefficient calculation, dynamic ship berthing strategy generation and a feedback terminal, a port manager can monitor and optimize the ship berthing process in real time. Therefore, the operation safety and efficiency of the port are improved, a more scientific and flexible berthing scheme is provided for the ship, and the sustainability and economic benefits of port operation are ensured.

The invention relates to an intelligent ship repair business opportunity prediction method and system based on multi-source data fusion, and the method comprises the steps: collecting multi-source data including ship basic data, market dynamic data and enterprise internal data; automatically screening out business opportunity ships with high potential ship repairing business opportunities by setting multi-dimensional screening rules such as a special inspection window rule, a geofence rule and a tonnage limitation rule; data of multiple dimensions including historical ship repair record scores, historical common route record scores, customer level scores, to-be-detected approaching time scores, company affiliated country scores, ship type scores, ship size scores and the like are constructed; dynamically calculating the total score of each business opportunity ship in the initial business opportunity list by combining a static weight and a dynamic adjustment mechanism; and finally, automatically converting a natural language query request input by a user into a structured format query condition by utilizing a natural language processing technology in combination with a knowledge base and an intention recognition conversion method so as to screen out a ship matching result, thereby realizing prediction of ship repair business opportunities.

The invention provides a gear and rack climbing type ship lift adopting a balance winding drum for safe fortification and an operation method of the gear and rack climbing type ship lift, relates to the field of ship lifts, and aims to solve the problems of main engine arrangement and water leakage safety fortification of a high-water-head large-tonnage ship lift. The ship lift comprises a self-bearing ship chamber structure, gear and rack driving mechanisms distributed on side wing platforms, a balance winding drum device at the top of a tower column, a balance weight system and a butt joint locking / jacking device. The ship chamber driving mechanism is driven to ascend and descend through meshing of a gear and a rack, the balance winding drum device is connected with the ship chamber and the balance weight system through a steel wire rope, weight balance is achieved, and locking is achieved through an accident brake during water leakage. The butt joint device resists loads through frictional contact and mechanical self-locking. According to the invention, the manufacturing and mounting problems of the super-large winding drum are avoided, space conflicts are solved, a three-level protection mechanism is constructed, the braking response time is less than or equal to 0.5 second, the locking reliability is 100%, and the device is suitable for navigation of ships with 200m-level water heads and 5000 tons.

The application provides a container liner shutdown and short-time capacity abnormality identification method and system, voyage dynamic data is calculated based on AIS data of a container ship, port data and berth data, average berthing operation time and average anchoring operation time of each port for each ship type are calculated according to ship type in the AIS data and the port data, and a specific judgment method is used to judge that the current and historical state of the container ship is in the sailing state or the shutdown state, then the number of container ships in the shutdown state of different ship companies is counted according to the container ship belonging to the ship company, the container ship shutdown and short-time capacity abnormality of different ship companies is analyzed and counted according to the number of container ships in the shutdown state and the deadweight tonnage data in the AIS data and is displayed. The application can effectively identify and distinguish the sailing or shutdown state of the container liner, and can effectively improve the accuracy of the ship company capacity comparison and monitoring.

The present application relates to the technical field of shipbuilding plant, especially to large tonnage ship, ship modularization, digital construction technology, in particular to a kind of support frame structure of shipyard load floor;Including the support rod of section being "T" shape, also include the connecting rod or connecting plate being arranged in the both sides of support rod.The above-mentioned "T" shape support rod and its accompanying connecting rod structure proposed in the present application are easy to mass production and have guaranteed quality, at the same time, I-beam or rail is used as support rod, which has stronger load capacity, and avoids the quality risk of thick plate welding, at the same time, the load floor proposed in the present application connects support member with floor reinforcement during manufacturing process, so that after concrete pouring and solidification, higher "integrity" and bearing capacity can be realized, and the problems of floor collapse and cracking caused by long-term load in later period are avoided.

The present application relates to ship lift anti-collision technical field, specifically is a kind of ship lift anti-collision device and method based on water power energy dissipation.The device includes lifting system, docking locking system and hydraulic energy dissipation system, lifting system is connected with arresting cable through lifting reversing device, and arresting cable end is hinged energy dissipation flap.The method includes: ship enters compartment before lifting and locking arresting cable, and according to the ship displacement adjustment the opening and closing state of energy dissipation flap on overflow hole;When ship impact, arresting cable drives energy dissipation flap to rotate, and the kinetic energy is consumed by water body work and gravity lifting;When not completely stopped, provide rigid support redundancy by energy dissipation flap.The present application realizes flexible blocking and short braking, and the structure is simple, self-adapting, and suitable for different tonnage ship anti-collision protection.

The embodiment of the invention discloses a method and equipment for determining ship-collision-resistant fortification ship type parameters of a bridge and a medium, and relates to the technical field of bridge risk assessment. The method comprises the steps that a ship-to-bridge collision model is constructed, and the ship-to-bridge collision model is used for reflecting the relation among ship-to-bridge displacement, mass and rigidity; determining a calculation formula of a net displacement ratio and an energy ratio of the ship and the bridge according to the ship-bridge collision model; according to the calculation formula and the law of conservation of energy, determining an expression of the initial navigational speed of the ship about the energy absorbed by the pier; determining a navigational speed threshold expression for preventing the bridge from collapsing under different ship tonnages according to the expression and the maximum threshold of the bridge pier displacement; and according to the ship speed threshold expression, determining fortification ship type parameters of the bridge pier. According to the embodiment, fortification ship type parameters can be determined according to bridge pier structure characteristics and service stages.

The invention provides a large-tonnage air floating structure grouping method. Firstly, a semi-submersible barge is subjected to bottom sitting operation and berthed to a designated position on the shore; and then a modular transport vehicle is adopted as transfer equipment, and the multiple large-tonnage air floating structures are stably transported to the deck bearing face of the semi-submersible barge from the shore-based transport platform in sequence. In the arrangement process, a preset spacing distance is kept between the large-tonnage air flotation structures, and a shock insulator with a buffering protection function is regularly laid between every two adjacent structure units. The large-tonnage air floatation structures are provided with axially-through prestress holes in advance, during construction, high-strength pre-tightening cables penetrate through the prestress holes of the structures in sequence, hydraulic tensioning devices are installed at the two ends of the pre-tightening cables finally, and tensioning of the pre-tightening cables is achieved by controlling force application parameters of the tensioning devices. Therefore, a plurality of independent large-tonnage air floatation structures are firmly connected to form an integral transportation unit. According to the method, the problem that the efficiency is low when a large-tonnage air flotation structure is transported is effectively solved through a grouping process.

A structure and method for salvaging and relocating marine anchorage foundations are disclosed. The structure includes a powered floating barge and at least one set of synchronous lifting components installed on its deck. Each component consists of a synchronous hydraulic control device, a laterally arranged traction rail, a hydraulic telescopic rod, a traction block slidably mounted on the traction rail, and a polymer cable. The method includes: in the connection step, pushing the traction block to the side of the barge and connecting it to the anchorage foundation; in the lifting step, retracting the hydraulic telescopic rod towards the centerline and horizontally pulling the anchorage foundation away from the seabed via the cable; in the transportation step, towing the anchorage foundation suspended underwater to the target location by the powered floating barge; and in the release step, extending the hydraulic telescopic rod to the side of the barge and lowering the anchorage foundation to the seabed. This invention utilizes seawater buoyancy to reduce the lifting load, eliminates the need for large crane vessels, is low-cost, provides stable operation, and enables precise underwater relocation and reuse of large-tonnage anchorage foundations.

The application discloses a hierarchical ship collision prevention device and a design method, and relates to the technical field of bridge structure protection. The hierarchical ship collision prevention device comprises a steel floating box capable of self-floating and movably sleeved on a pier; a plurality of air bags capable of being inflated and deflated are divided into two groups and are respectively attached to two collision surfaces of the steel floating box; the top of each air bag is provided with a safety valve in a normally closed state; the safety valve is opened when the bearing capacity of the air bag reaches the limit bearing capacity; and two outer protective plates are respectively arranged on the collision sides of the two groups of air bags. The application also discloses a design method of the hierarchical ship collision prevention device. The air bags completely absorb the collision energy of small typical tonnage ships, and the air bags and the steel floating box 1 jointly absorb the collision energy of large typical tonnage ships. The hierarchical ship collision prevention device and the design method can have strong energy absorption capacity and can avoid the situation that the ship collision prevention device is destroyed after collision.

The utility model discloses a guide pile tip for a large-tonnage sea pile, which comprises a guide pile tip and a guide pile, the guide pile tip is positioned at the bottom of the guide pile, a connecting component is arranged between the guide pile tip and the guide pile, and the top of the guide pile tip is sleeved at the bottom of the guide pile through the connecting component. The connecting assembly comprises a connecting plate and a connecting sleeve, the connecting plate is fixedly installed at the bottom of the guide pile, the connecting sleeve is fixedly installed at the top of the pile tip of the guide pile, a limiting connecting base is fixedly arranged on the connecting plate, and the connecting sleeve is arranged on the limiting connecting base in a sleeving mode. According to the utility model, the connection between the guide pile tip and the guide pile is more stable and reliable, and the stability and the bearing capacity of the whole structure are effectively improved.

The invention discloses a multifunctional integrated oceanographic engineering super-tonnage lifting hook, and relates to the technical field of offshore lifting hooks, the multifunctional integrated oceanographic engineering super-tonnage lifting hook comprises a lifting hook main body structure, the lifting hook main body structure comprises a hook body assembly, a plurality of hook claw components and a heavy-load hook tip, and the plurality of hook claw components are welded on the outer circular wall surface of the hook body assembly; through mutual cooperation of a sliding connecting seat, a load-bearing supporting seat, a trigger rigging, an intelligent control box, a sliding connecting seat, a lifting hook main body structure, a central load-bearing lifting rod and a steering guide wheel, goods in the lifting hook main body structure can be blocked, and the goods are prevented from falling off from the lifting hook main body structure; through mutual cooperation of a main reset spring assembly, a driving push rod, a limiting fixing plate, a wedge-shaped driving block, an auxiliary reset spring assembly, a linkage mounting rod, a clamping lock column, an intelligent control box, a bearing supporting seat, a sliding connecting seat and an anti-off-load steel cable, automatic unhooking operation can be achieved, and the automatic unhooking effect on the lifting hook main body structure is achieved.

The invention discloses a ship actual load ton continuous dynamic measurement system, which comprises a plurality of measurement devices, a cable, a pulley, a data collector and a data center, and is characterized in that an ultrasonic device and a pressure sensor are integrated in each measurement device. Core measurement components of the device are only an ultrasonic device, a pressure sensor and conventional data collector equipment; the overall cost is low and the economical efficiency is remarkable. According to the invention, the measurement device can be manually and directly controlled to be retracted and released from the ship deck without underwater operation or special hoisting equipment; the folding and unfolding operation is convenient, and the adaptability is high. Data can be collected in real time in the whole cargo loading and unloading process, real-time data support is provided for dynamic regulation and control of loading and unloading operation, and economic losses caused by loading and unloading weight deviation are avoided. According to the invention, a plurality of measuring devices are deployed along the transverse direction of the ship, the data center synthesizes the measurement data of each position, each subtle change of the real load ton is accurately captured, and the accuracy of the measurement data of the real load ton change is improved.

This invention discloses a safety early warning method and system based on port monitoring data analysis, relating to the field of port safety monitoring technology. The method identifies human figures and mobile work equipment in the land-based work area from port monitoring videos and maps them onto a land-based work area plan. Simultaneously, it acquires data on ship entry and exit and cargo loading / unloading in the port's water-based work area, determining the tonnage and cargo volume of each berthed ship to form a ship / cargo parameter group. The land-based work area plans corresponding to ship / cargo parameter groups with a similarity greater than or equal to preset values ​​are integrated and categorized, and the performance characteristics of the human figure and mobile equipment mapping points are analyzed to derive characteristic parameters. These characteristic parameters are then mapped back to the land-based work area plan to form a plan template for analyzing real-time port monitoring data and issuing safety early warnings based on the analysis results. The above technical solution of this invention achieves port safety early warning and improves the safety of port operations.

The invention discloses a ship hydrostatic performance prediction large model training, deployment and implementation method based on a large model technology. Training a ship hydrostatic performance prediction learning large model according to real sample data of various types, main scales, tonnages and other real ship completion technical data; on the basis of the trained ship hydrostatic performance prediction learning large model, a model structure is adjusted, and a ship hydrostatic performance prediction large model is constructed for deployment; and inputting ship design elements and variable prediction tasks into the ship hydrostatic performance prediction large model to predict ship hydrostatic performance indexes. According to the method, designers can be replaced to complete ship hydrostatic performance estimation work, the working efficiency and level are improved, and basic service is provided for a ship concept designer (intelligent agent) based on artificial intelligence.

The application provides a ship collision arc gate failure risk method, system, device and medium, and relates to the field of water conservancy engineering safety evaluation. The method comprises the following steps: constructing an index system for evaluating the failure risk of the arc gate; simulating the dynamic response of the arc gate after being hit by ships under different ship tonnages and ship speeds according to a finite element model, so as to extract actual values of various evaluation indexes; sending the actual values of the various evaluation indexes into a forward cloud generator model to generate corresponding cloud droplets, so as to calculate the membership degrees of the various evaluation indexes under different risk levels; calculating the combined weight values of the various evaluation indexes by using an entropy weight method and a variation coefficient method, and combining the membership degrees to obtain corresponding basic probability assignment functions; and fusing the basic probability assignment functions of the different evaluation indexes according to a Dempster combination rule, so as to determine the final failure risk evaluation grade of the arc gate under the ship collision. The technical scheme can accurately measure the failure risk of the gate under the dynamic load.

This invention relates to a pier / platform anti-collision device. The device includes: a main energy-dissipating structure comprising a steel casing that surrounds the pier / platform, and isolation components arranged on the outer wall of the inner side of the steel casing; an auxiliary energy-dissipating structure comprising a flexible bladder surrounding the steel casing, energy-dissipating particles filled in the cavity inside the flexible bladder, and a diffusion block adhering to the surface of the flexible bladder facing away from the steel casing; and a locking device for fixing the steel casing to the pier / platform. The auxiliary energy-dissipating structure of the device can withstand multiple impacts from small-tonnage vessels while protecting the main energy-dissipating structure from damage. After being impacted by small-tonnage vessels, the auxiliary energy-dissipating structure can be easily maintained or replaced, thereby reducing the repair or replacement costs during the use of the pier / platform anti-collision device and extending its service life.

The application discloses a risk monitoring and control method for offshore construction, and particularly relates to the technical field of collision control of offshore construction. The method comprises the following steps: obtaining real-time position, speed, heading, tonnage, wind speed, wind direction, wave height, wave direction, flow rate, ship type, ship historical trajectory and ship behavior mode of a ship, preprocessing the obtained data, inputting the preprocessed multi-source data into a ship trajectory prediction model, outputting multiple possible trajectories and trajectory probabilities of a future time window, calculating collision probability and dynamic safety distance, improving the closeness between collision probability and real collision probability, improving the accuracy of collision probability analysis, quantifying the safety boundary of the ship and the construction area in real time, avoiding the failure of a fixed threshold in a complex environment, providing a dynamic judgment benchmark for risk level classification, improving the risk identification accuracy, and further more accurately matching response instructions to further reduce collision hazards.

The application discloses a novel large-tonnage lifting system and method for offshore structures, three lifting arms are arranged on the left and right sides of the ship width direction and form a group, each lifting arm comprises a lifting beam and a Y-direction rectangular track, a main oil cylinder and an auxiliary oil cylinder are arranged at the inner end of the lifting beam, three corner points of a triangular lifting lever are hingedly connected with the lifting beam, the bottom of a longitudinal lifting support and the output end of the main oil cylinder, the output end of the auxiliary oil cylinder is connected to the triangular side between the main oil cylinder and the first lifting beam, six auxiliary oil cylinders are started, the triangular lifting lever of the first group obtains a clockwise upward force, the triangular lifting lever of the second group obtains a counterclockwise upward force, and active wave compensation is realized; when the upward force applied to each lifting arm reaches 80%, six main oil cylinders are started to lift the structure; the application guarantees that the upper end surface of the platform is effectively close to the bottom of the platform under the influence of the ship roll and pitch caused by the sea wave, and reduces the occurrence of the sliding phenomenon.

The invention relates to an underwater controllable buoyancy zero-contact frame combining magnetic levitation force, water buoyancy and water impact force and a generator, which can be widely applied to the fields of offshore island building, offshore road and bridge building, high-speed rail and other transportation hubs, hydroelectric power generation, ship cabin bodies and the like. The problems that sea filling and island building are slow and limited and the like can be solved, and sea island building is fast and unlimited; a bridge and a high-speed rail can be built on the sea, and a normal running channel of the icebreaker is laid in a frozen water area of the public sea; the problems of limited ship tonnage, difficulty in launching, low running speed, easiness in bumping and instability, high energy consumption and the like can be solved, and the problems that the ship tonnage is infinitely expanded, the ship is directly built in water without launching, the running speed is high, the ship is relatively stable in the sea, and zero-energy-consumption infinite continuous running is realized are solved. And the system can be fully distributed in rivers and seas in the whole world without dead angles for hydraulic convenient power generation. And marine resources are further developed, and global regional conflicts are relieved. The country needs to quickly pass the patent, which is of great significance to the development of the country.

The invention relates to an auxiliary berthing system for a large-tonnage ship. The auxiliary berthing system comprises a support component, a first adjusting component, a second adjusting component, a mounting component, a buffering component, an adsorption component, a third adjusting component, a distance measuring component and a control component. The ship berthing device has the advantages that the horizontal position and the height position of the adsorption component on the support component can be adjusted by arranging the first adjusting component and the second adjusting component, so that the adsorption component can be aligned with a ship body of a ship, and the ship berthing efficiency is effectively improved; in addition, by arranging the buffer components on the mounting component and the adsorption component, the berthing ship can be buffered, the ship is prevented from directly colliding with the revetment of the port, and the situation that the ship body or the revetment of the ship is damaged can be reduced; moreover, the distance measuring part is installed on the third adjusting part, so that the height position of the distance measuring part on the support part can be adjusted, the system can be suitable for ships with different ship body heights, and the applicability of the whole system is improved.

The invention discloses a ship flow metering device which comprises a protection box body, an ultrasonic detector is installed at the center position of the lower surface of the protection box body, and a wireless transmitting antenna is installed on one side of the lower surface of the protection box body. A ship identification module, an ultrasonic image acquisition unit, a data coding module, a single-chip microcomputer and a wireless transmitting module are arranged in the protection box body, and the ship identification module, the ultrasonic image acquisition unit, the data coding module, the single-chip microcomputer and the wireless transmitting module are sequentially arranged from left to right. According to the invention, the ships in the channel can be metered, and the approximate daily conveying tonnage can be obtained, so that a basis is provided for the management and construction of a river channel, the flow of the ships in the channel can be managed in real time through the metering of the ships, and the condition of congestion in the channel caused by excessive ships in the same channel can be avoided; according to the invention, large ships can be managed, and the safety of ship driving is improved.

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 application provides a method for predicting the overall strength and plasticity of a high-strength steel thick plate. The method comprises the following steps: performing original plate thickness tensile tests and small-size tensile tests on a plurality of high-strength thick plates, performing correlation analysis on the test results of the two tests, and establishing a prediction model. The method can predict the mechanical properties of the original plate thickness of the thick plate through a standard-size sample in the subsequent design process. The prediction structure is accurate and reliable. After the prediction model is established, a large-tonnage tensile testing machine is not required in the subsequent prediction process. Therefore, the corresponding test and prediction can be performed in a conventional laboratory, the test difficulty and cost are significantly reduced, and great convenience is provided for the use and design of high-strength thick plates in application scenarios such as ships, offshore platforms and polar equipment.

The utility model discloses a marine cement conveying device, which relates to the technical field of mechanical equipment, and comprises a bearing vertical arm, a material storage box body and a servo motor, the outer side of the bearing vertical arm is symmetrically provided with guide grooves, the outer side of the bearing vertical arm is provided with a lifting mechanism, the lifting mechanism adjusts the conveying height according to the use requirement, and the servo motor is connected with the material storage box body. And the conveying mechanism stirs and discharges the cement continuously injected into the material storage box body, the positions of the material storage box body and the cross beam are adjusted according to the sizes of the ships, and the uniformity of material injection is improved. In the using process, the height of the cross beam and the height of the material storage box arranged below the cross beam are adjusted according to the tonnage of a ship, then the height of a feeding pipe arranged at the bottom end of the material storage box is adjusted conveniently, and materials are conveyed into a ship cabin.

This invention relates to the field of port operation status perception and monitoring technology, specifically disclosing a port operation status perception and monitoring system based on a data platform. It uses a micro-weather station array to monitor wind speed and visibility values ​​at various current times, simultaneously acquiring tidal phase data from an astronomical observatory, and comprehensively generating multi-dimensional meteorological data for a set time period. Combined with the target vessel's tonnage, it dynamically calculates the target vessel's berthing safety factor through multi-dimensional constraints. Based on the target vessel's berthing safety factor, it generates a dynamic berthing strategy for the target vessel. Through the integrated application of multi-dimensional meteorological data acquisition, berthing safety factor calculation, dynamic berthing strategy generation, and feedback terminals, port managers can achieve real-time monitoring and optimization of the vessel berthing process. This not only improves the safety and efficiency of port operations but also provides vessels with more scientific and flexible berthing solutions, ensuring the sustainability and economic benefits of port operations.

The application discloses a semi-submersible ship berth ship moving device, which comprises a sliding support, a segmented blocking part and a slow release part. The sliding support comprises a support table, a ball distance maintaining part and a sliding seat. The support table is arranged on the ground, and the ball distance maintaining part is arranged on the support table to assist in supporting the sliding seat. The segmented blocking part comprises a telescopic blocking part, a blocking power part and a blocking lubricating part. The telescopic blocking part, the blocking power part and the blocking lubricating part are arranged on the support table to segmentally block the sliding seat on which a ship to be moved is fixed. The slow release part comprises a release fixing part and a pulley winding and unwinding part. The release fixing part is arranged on the ground, and the pulley winding and unwinding part is connected to the release fixing part to release the slow sliding of the sliding seat along the support table. The application has the advantages of high automation, high safety, fast ship moving speed, high reuse rate, controllable ship moving process speed and the ability to meet the needs of safe ship moving of ships with different tonnages.

The invention relates to the technical field of ship stowage, in particular to a new general cargo ship stowage assisting system which comprises a ship cargo system used for storing and managing stowage information, identifying and classifying cargos into common general cargos and packaging dangerous cargos according to cargo professional names, uploading the common general cargos to cargo boarding and isolation judgment, and sending the cargo boarding and isolation judgment information to the ship cargo system; verifying according to the isolation requirements of the mutually-abutted grocery, associating the packaging dangerous goods with the standard related information, judging the isolation level, and if the requirement is not met, prompting that the loading is not allowed; the stowage operation system is used for receiving voyage number plan information input by a user, generating a stowage scheme and performing compliance verification; the accounting and result output system is used for carrying out data accounting on the stowage scheme and outputting an accounting result and a visual stowage graph, and an accounting module can dynamically calculate the gravity center of irregular cargoes and calculate a general stowage stability algorithm of the cross-tonnage general cargo ship based on ship stability reference parameters and cargo hold space characteristic parameters. According to the invention, scientificity, operability and safety of stowage work are improved.

The application discloses a kind of electric steering row wheel special transport platform, it is related to ship transport equipment technical field, the transport platform includes multiple steering row wheel platforms, steering row wheel platform is connected with the aperture character groove of the bottom of the buoyancy tank to be moved by being matched with the aperture character boss being set on bearing table;The bearing table of each platform is equipped with row wheel walking unit, straight drive unit and steering drive unit, and row wheel walking unit can realize positive and negative rotation and rotate around its axis ± 90 ° under driving, realize the front and rear, left and right and oblique omnidirectional movement of platform;Multiple steering row wheel platforms cooperate, so that the buoyancy tank realizes efficient, safe, flexible omnidirectional movement in ship;The application has the advantages of simple structure, high reliability, high automation, high safety, etc., is suitable for efficient movement operation of large-tonnage buoyancy tank;Solve the technical problems that existing buoyancy tank moving device structure is complex, efficiency is low, automation is low, movement and steering flexibility is low and operation safety is low.

The application discloses a method for constructing a prediction model of a critical wind speed of a ship navigation tunnel fire, which comprises the following steps: drawing a basic structure drawing of a ship tunnel by using drawing software, obtaining a structure model of the ship tunnel by adjusting size parameters of the basic structure drawing of the ship tunnel, confirming a maximum tonnage of a ship that can navigate in the tunnel and constructing a fire source ship model based on the structure model of the ship tunnel; confirming a range of fire source characteristics of the ship according to the maximum tonnage of the ship that can navigate in the tunnel, selecting different fire source working condition parameters according to the range of the fire source characteristics, importing the structure model of the ship tunnel and the fire source ship model into a fire simulation software, respectively performing fire simulation based on the different fire source working condition parameters to obtain a critical wind speed simulation data set, performing correlation analysis on the critical wind speed simulation data set and size parameters of the ship tunnel, screening out factors with a correlation coefficient greater than a set threshold value, and performing formula fitting on the critical wind speed simulation data set and the factors to obtain a critical wind speed prediction model. The prediction accuracy is effectively improved.