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132 results about "Ship master" patented technology
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A sea captain, ship's captain, captain, master, or shipmaster, is a high-grade licensed mariner in ultimate command of the merchant vessel.
Quick estimation method for gyro errors in ship-borne master/sub inertial navigation transfer alignment process
InactiveCN103047999AFast alignmentNavigation by speed/acceleration measurementsConstant errorShip master
The invention discloses a quick estimation method for gyro errors in a ship-borne master / sub inertial navigation transfer alignment process, and catering to transfer alignment of ship master / sub combinations, designs a quick estimation method for the gyro errors, which is suitable for mooring / constant-speed direct flight conditions and is used for quickly estimating constant errors of sub inertial navigation gyros. Under the support of a real-time multiple task operating system, a sub inertial navigation system implements the circular navigation resolving and the information fusing for one group of data; and the high-speed performance of a computer is fully used to quickly finish the estimation of the gyro constant errors in the transfer alignment process. The method dose not change the existing algorithm of navigation resolving, dose not change the filter structure and the information matching mode in the transfer alignment information fusing algorithm, fully uses the redundant resources of the existing navigation computer, and quickens the gyro error estimation speed in the transfer alignment process.
Owner:SOUTHEAST UNIV
Long shafting arranging and installing method of platform work ship
InactiveCN103587648AHigh precisionSolve the technical problem of easy deformation of row assemblyVessel partsMarine engineeringDrive shaft
The invention discloses a long shafting arranging and installing method of a platform work ship. The long shafting arranging and installing method of the platform work ship includes the following steps that a base line of a ship body is assigned, and other auxiliary lines which are parallel to the base line are pulled out; axis centering is performed with an irradiation method, an irradiation datum point of a shafting theory center line is determined, and a shafting primary pulling line and a tail shaft irradiation datum point are determined; a dummy shaft is used for simulating a tail shaft to perform primary shafting arranging and installing; the position of a reduction gearbox is determined according to a shafting positioning datum line, the dummy shaft and the reduction gearbox are centered, and the position of a high-speed transmission shaft and the position of a main machine are determined in the direction from the gearbox to a ship head; the high-speed transmission shaft is centered and installed; the main machine is centered and positioned, the position of the main machine is accurately adjusted, axial, radial and zigzag numerical values of a flange of the high-elastic and high-speed transmission shaft of the main machine conform to specified values. The long shafting arranging and installing method of the platform work ship is reliable, easy to perform, and capable of improving the installation efficiency and improving the shafting installing precision.
Owner:JIANGSU ZHENJIANG SHIPYARD GROUP
Lashing bridge structure of large container ship
InactiveCN111098982AEasy to operateImprove binding work efficiencyAccommodation for deck loadsHull structureMechanical engineering
The invention provides a lashing bridge structure of a large container ship and relates to the technical field of ship equipment design. The device comprises a plurality of horizontal platforms, a plurality of stand columns, a plurality of binding eye plates and a plurality of shear walls, wherein the horizontal platforms are arranged in the ship width direction of a large container ship, the stand columns are vertically arranged on two sides, in the ship length direction of the large container ship, of each horizontal platform and fixedly connected with the horizontal platform, the stand columns comprise a plurality of cabin cover guide stand columns, a plurality of first stand columns and a plurality of second stand columns, bottom ends of the cabin cover guide stand columns are supported on a ship body cabin coaming structure of the large container ship, bottom ends of the first stand columns are supported on a ship body structure of the large container ship, bottom ends of the second stand columns are not connected with the ship body structure of the large container ship, the binding eye plates are arranged on the stand columns, and the shear walls are arranged among the standcolumns in the ship width direction, and the shear walls are longitudinally arranged between the third horizontal platform and the ship body cabin coaming structure. The lashing bridge structure is advantaged in that a lashing bridge is light in weight, construction cost is saved, and operation of wharf workers is facilitated.
Owner:708TH RES INST OF CSSC
Liquid cargo tank arrangement form capable of effectively reducing 20000-30000 m<3> liquefied gas carrier cost
InactiveCN110712712AReduce initial investment costReduce evaporation rateHull interior subdivisionFor bulk goodsEngineeringOperational safety
The invention discloses a liquid cargo tank arrangement form capable of effectively reducing 20000-30000 m<3> liquefied gas carrier cost. The number of liquid cargo tanks is only two, the two liquid cargo tanks include the first liquid cargo tank near a bow and a second liquid cargo tank near a stern, a first transverse bulkhead and a second transverse bulkhead are arranged between the first liquid cargo tank and the second liquid cargo tank, the first transverse bulkhead is close to the first liquid cargo tank, and the second transverse bulkhead is close to the second liquid cargo tank; a non-cargo loading tank is formed between the first transverse bulkhead and the second transverse bulkhead, the distance between the first transverse bulkhead and the second transverse bulkhead is Lvoid,the Lvoid is larger than or equal to L<2 / 3> / 3-L1-L2, wherein L is the length of a liquefied gas carrier, L1 is the distance from the tail of the first liquid cargo tank to the first transverse bulkhead, and L2 is the distance from the head of the second liquid cargo tank to the second transverse bulkhead. The liquid cargo tank arrangement form can reduce the ship initial investment cost, can alsoeffectively simplify the operation process of the liquefied gas carrier and improves the operational safety of the liquefied gas carrier.
Owner:SHANGHAI MERCHANT SHIP DESIGN & RES INST
Boat safety system
A safety system for a boat, watercraft or other vehicle includes a kill switch connected to the motor for preventing the motor from running under dangerous circumstances. The system includes a fob that wirelessly communicates with the kill switch, so that the motor only runs when the fob is within a predetermined distance from the captain's console. Other sensors communicate with the kill switch, either hard-wired together or wirelessly, upon detection of dangerous situations, including proximity sensors to detect if a swimmer is near the propeller or if the captain is not in position at the helm, gate sensors to detect when gates on the boat are in an open position, and ladder sensors to detect when a ladder is in a down position. The system may also include an alarm emitting a visual or audible warning to the boat captain based on input from the sensors.
Owner:TROTTER DANIEL SCOTT
Marine traffic flow basic diagram drawing method based on AIS data
The invention discloses a marine traffic flow basic diagram drawing method based on AIS data. The method comprises the following steps of: selecting a research channel and establishing a channel coordinate system; acquiring and cleaning AIS data; converting longitude and latitude coordinates of ships; determining the average ship length and the average ship width of the ships in the channel, and calculating horizontal coordinate values of the ships entering the channel; performing channel subdivision; drawing a space-time trajectory diagram of the ships in the channel; calculating maritime traffic flow characteristic parameters; determining key characteristic parameters of marine traffic flow; and drawing a maritime traffic flow basic diagram. According to the method, construction of the maritime traffic flow basic diagram based on the large amount of AIS data is achieved, a new way is provided for port and navigation departments or related researchers to analyze and manage maritime traffic, and specific practical application of the method is carried out in maritime traffic flow research.
Owner:SHANGHAI MARITIME UNIVERSITY
Method and system for recognition of objects near ship by using deep neural network
ActiveUS20200365035A1Easy constructionReduce collision accidentsNavigational aid arrangementsCharacter and pattern recognitionObject motionCCTV - Closed circuit television
The present invention relates to a method and a system for recognition of objects near a ship by using a deep neural network to prevent a collision with the object by recognizing a neighboring object that may be risky to the ship sailing in a restricted condition such as a foggy environment. All object movements within a predetermined radius are detected and recognized so that collision accidents with objects on the sea in an environment such as fog caused by bad weather at sea can be prevented, and a risk alarm is notified to a captain when the object is detected so that collision accidents can be remarkably reduced. In addition, peripheral environments are detected by only installing a CCTV camera so that expenses can be reduced, human negligence can be prevented, and the system can be easily constructed to prevent collisions.
Owner:HOSEO UNIV ACADEMIC COOP FOUND
Fishing weight with swivel, "rock skipper"
A round, globe like weight made of alcryn or similar rubber like material with a swivel which is embedded in the body during the injection molding process.
Owner:ROWE WAYNE +1
Method for determining pressure booster distribution machine parameter under marine diesel ISO condition
ActiveCN101329221AImprove calculation accuracyAccurate measurement dataEngine testingGas compressorDiesel engine
The invention relates to a measuring method of the matching supercharger parameters of a shipborne diesel engine under ISO condition, which comprises the following steps: the parameters of the diesel engine with 100 percent load under real condition are measured; air consumption under real condition is calculated according to the measured parameters and then converted into air consumption J46 under ISO condition; the absolute value of scavenging air pressure under the real condition G41 is converted into the absolute value J41 of scavenging air pressure under the ISO condition; the pressure ratio K11 of a gas compressor that is corresponding to the running parameters of the diesel engine under ISO condition is calculated; airflow rate J14 and the pressure ratio K11 of the gas compressor that are corresponding to each load of the diesel engine under ISO condition (such as 90 percent, 75 percent and 50 percent) are calculated; matching supercharger points are depicted on a gas compressor property curve according to J14 and K11 and connected into a matching line, and a surge margin Delta is calculated by comparing with the matching line with a surging line 2. The measuring method of the invention can obtain the matching supercharger parameters under ISO condition and provide reference for ship masters and scientific researches, and is easy to determine the matching degree between the supercharger and the diesel engine.
Owner:HUDONG HEAVY MACHINERY
Auxiliary power system for starting and stopping of ship
InactiveCN106143857AControl outputSolve matching problemsPropulsion power plantsPropulsive elementsCapacitanceFrequency changer
The invention provides an auxiliary power system for starting and stopping of a ship. As shown in a first figure, a ship master control system 1 is in charging of controlling work of a diesel engine 2 and work of a speed changing system 4. According to the auxiliary power system for starting and stopping of the ship, a system processor 3, a frequency converter 5, a large-torque alternating current motor 6 and a super-capacitor energy storage system 7 are introduced. The system processor 3 is in charge of monitoring a speed changing command sent by the ship master control system 1 to the speed changing system 4, identifying the current work state of a ship main machine, sending a command to control the frequency converter 5 according to obtained starting and stopping information and the power, rotation speed and torque of the diesel engine so as to drive the large-torque alternating current motor 6 connected to a drive spindle in series. After supplementing the power and torque to the spindle, the large-torque alternating current motor 6 drives a propeller 8. The power requirement of the large-torque alternating current motor 6 is met through the super-capacitor energy storage system 7. In a stable running period, the large-torque alternating current motor 6 is controlled by the system processor 3 to charge the super-capacitor energy storage system 7.
Owner:刘云
Push rod clamping type rope towing system and working method thereof
ActiveCN108901334ASolve the problem that the floating ball cannot be hooked smoothlySolve the ropeClimate change adaptationHarvestersTransmission beltElectro hydraulic
The invention relates to a push rod clamping type rope towing system. An electro-hydraulic push rods I, an electro-hydraulic push rod II and an electro-hydraulic push rod V which are vertically telescopic are arranged in series along the inner side or outer side of the ship; an electro-hydraulic push rod III and an electro-hydraulic push rod IV are arranged at a position between the electro-hydraulic push rod II and the electro-hydraulic push rod V; each electro-hydraulic push rod extends support arm outwardly; a first support arm is provided with a guiding limit frame at the end part; a second support arm, a third support arm and a fifth support arm are provided with clamps with openings facing upward, and the fourth support arm end is provided with a clamp with an opening facing downward; the guide limit frame is provided with a shift lever that divides the limit frame into two, and one end of the shift lever and the limit frame are hinged by an elastic reset hinge. The invention solves the problems that the claw or the hook mounted on the conveyor belt / chain cannot smoothly take off the floating ball or the ropes, the seedling ropes, and the floating balls are damaged due to theforce.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
Large ocean sea channel surveying vessel
PendingCN112937779AReasonable layout designVersatileCargo handling apparatusVessels for aircraftMeasurement deviceOcean sea
The invention relates to a large ocean sea channel surveying vessel which carries various high-performance specialized ocean surveying equipment systems, and comprises a manned measurement boat, an unmanned measurement boat, an autonomous unmanned underwater vehicle release and recovery system, a pull-type measurement device, a navigation type multi-element measurement system, a thermohaline depth gauge detector, an underwater fixedly-mounted acoustic device and a measurement winch device. The measurement operation deck area comprises a tail operation area and a broadside operation area, and the multi-point putting and recycling requirements of measurement equipment can be met; the underwater fixedly-mounted acoustic device is mounted at the bottom of the ship in front of 1 / 3 of the length of a midship of the ship through a bow hoisting appendage; a stabilizer adopts a retractable fin stabilizer and a passive controllable anti-rolling tank, and two types of stabilizer equipment are intelligently and automatically controlled through a combined control system; the surveying vessel is further provided with a DP-2-level dynamic positioning system, and the surveying precision, continuity and reliability in the long-period gridding surveying operation and fixed-point surveying operation process in the deep sea and the far sea can be guaranteed.
Owner:708TH RES INST OF CSSC
Power generation device for ship by utilizing wave energy
PendingCN111472922ASolve the problem that it is difficult to use wave energyReduce fuel consumptionMachines/enginesEngine componentsOn boardGenerating capacity
The invention discloses a power generation device for a ship by utilizing wave energy. The device mainly comprises a wave energy collecting device and a hydraulic system. The device is symmetrically installed on a larboard and a starboard of the ship, the wave energy of the left and right sides of the ship is utilized by the wave energy collecting device and converted into pressure energy in hydraulic oil, and then the pressure energy is converted into electric energy through the hydraulic system to provide part of power for the ship, so that the effective utilization of the wave energy in thesailing process of the ship is realized. In addition, the existence of an energy collecting plate in the device plays a role in buffering the impact of waves, and the rolling degree of the ship can be properly reduced; more importantly, the ship length of the ship is long, the area of the left and right sides impacted by the waves is large, multiple sets of devices can be installed on the ship, and larger power generation quantity can be generated; and the device is simple in method and wider in application range.
Owner:QINGDAO UNIV OF SCI & TECH
Intelligent auxiliary berthing system for three-purpose working ship
InactiveCN112820149AThere will be no blind spotsAccurate detectionMarine craft traffic controlAlarmsData acquisitionComputer science
The invention provides an intelligent auxiliary berthing system for a three-purpose working ship, and relates to the technical field of ship navigation. The intelligent auxiliary berthing system for the three-purpose working ship comprises a command base and the three-purpose working ship, wherein the command base and the three-purpose working ship each comprise a data acquisition module, a parameter preprocessing module and a wireless connection module, and the three-purpose working ship further comprises an expelling module, a data analysis processing module, an alarm module and a display terminal. By arranging the data acquisition module on the three-purpose working ship, image data information acquisition can be carried out on overwater and underwater environments near a command base, image data information acquisition can be carried out on the overwater and underwater environments near the three-purpose working ship during berthing by arranging the data acquisition module on the command base, and then, a three-dimensional image between the command base and the three-purpose working ship is generated in real time, so that a captain can clearly know complex environments on water and under water during berthing, and the system is worthy of vigorous popularization.
Owner:天津中海油能源发展油田设施管理有限公司
Method and system for reducing vessel fuel consumption
PendingUS20220194533A1Low costMinimal timeWatercraft hull designNavigational aid arrangementsIndustrial engineeringShip master
A method for the reduction of ship fuel consumption through the optimisation of vessel draft, speed and trim using historical vessel data. Historical global, online data, is collected for multiple vessel operating parameters associated with its previous voyages. After initial filtering and cleaning of the gathered data, a process of analysing the data to determine the optimum draft, speed and trim for the vessels' given speed is described. The determined optimum draft, speed and trim values are then presented to the Captain or an automatic draft and trim optimisation system for the current draft and trim to be adjusted. This application therefore discloses a method for analysing historical vessel data to provide advice on optimum draft, trim and speed. A method for predicting the achievable fuel savings and recording the fuel savings achieved is also disclosed.
Owner:SHELL OIL CO
Protective liquid tank structure for resisting underwater explosion high-speed fragments
ActiveCN114212194AChange trajectoryAvoid damageHull bulkheadsFor bulk goodsUnderwater explosionDetonation
The invention discloses a protective liquid tank structure for resisting underwater explosion high-speed fragments, and belongs to the technical field of ship structure protection. The problem that an existing protective liquid tank is poor in protective performance is solved. The protective liquid tank is filled with absorption liquid and provided with a plurality of inner partition plates and a plurality of reinforcing ribs, the inner partition plates and the reinforcing ribs are arranged in the length direction of the ship, the inner partition plates are sequentially arranged from top to bottom, the reinforcing ribs and the inner partition plates are arranged in a staggered mode, and the two sides of each inner partition plate are fixedly connected with the liquid tank outer plate and the liquid tank inner plate respectively. And the two ends of each reinforcing rib are fixedly connected with the transverse bulkhead respectively. The multiple sets of reinforcing ribs and the inner partition plates are arranged in the length direction of the ship, the motion trails of detonation products and fragments can be changed, the detonation products and the fragments are made to deflect, meanwhile, shock waves generated when the fragments penetrate the liquid tank can be reflected, and therefore damage generated when the fragments penetrate the inner plate and the defense longitudinal wall of the liquid tank subsequently is reduced.
Owner:HARBIN ENG UNIV
Inter-ship relative field acquisition method based on ship cluster situation
ActiveCN110796142ACharacter and pattern recognitionMarine craft traffic controlClassical mechanicsShip safety
The embodiment of the invention relates to an inter-ship relative field acquisition method based on a ship cluster situation. The inter-ship relative field acquisition method comprises the following steps: dividing an interest perception area of a target ship into a plurality of interest perception subareas according to a ship safety meeting distance; according to the navigational speeds and the navigational directions of the target ship and the interference ship, the relative directions of the target ship and the interference ship, and the collision avoidance response time, in combination with the ship length of the target ship and / or the interference ship, calculating to obtain inter-ship variable advancing distances of the target ship under different meeting situations; determining a weight factor of the inter-ship variable carry distance in the plurality of interest perception sub-regions; calculating to obtain an inter-ship variable path distance according to the inter-ship variable advance distance and the weight factor; and obtaining a plurality of boundary points according to the inter-ship variable path distances of the interest perception sub-regions, and fitting to obtain the inter-ship relative field based on the ship cluster situation. According to the inter-ship relative field acquisition method, the inter-ship variable pitch is calculated according to the inter-ship variable pitch under different meeting types of the target ship and the interference ship in combination with the weight factor, and the inter-ship relative field based on the ship cluster situation is established in real time.
Owner:QINGDAO UNIV OF SCI & TECH
Light-weight lashing bridge structure of ultra-large container ship
InactiveCN111098983AReduce in quantityReduce installation processAccommodation for deck loadsHull structureMechanical engineering
Owner:708TH RES INST OF CSSC
Unmanned ship system based on RTK technology
InactiveCN108287538AImprove the level of intelligenceImprove stabilityPosition/course control in two dimensionsControl signalExternal reference
The invention provides an unmanned ship system based on RTK technology. The system comprises an external reference station and a driving ship. The reference station is used for sending RTK differencedata. The driving ship is provided with a GNSS receiver used for collecting locating information of the driving ship; a radio module used for carrying out precision calculation according to the locating information and the RTK difference data sent by the reference station; a data acquisition module used for collecting driving data of the driving ship; a communication module used for receiving a remote control command of an external remote controller; a data fusion module used for fusing the driving data, the locating information and the RTK difference data obtained after precision calculationto obtain fused data; a ship master control unit used for receiving the fused data sent by the data fusion module and the remote control command of the external remote controller and generating a control signal; and a ship execution unit connected with the ship master control unit and used for responding to the control signal of the ship master control unit and controlling a sounding boat to carryout corresponding operation. The system greatly improves intelligence level and stability of the unmanned ship.
Owner:SHANGHAI HUACE NAVIGATION TECH
Garbage salvage catamaran
ActiveCN112591020AEasy to operateImprove fishing efficiencyWater cleaningHydrodynamic/hydrostatic featuresRefuse collectionChain link
The invention provides a garbage salvage catamaran, and belongs to the technical field of garbage salvage equipment. The garbage salvage catamaran comprises a first ship body, a second ship body, a first chain conveying belt, a second chain conveying belt and a fishing device, a collecting box is fixedly connected between the first ship body and the second ship body, and the first chain conveyingbelt is arranged on the side wall, close to the second ship body, of the first ship body in the ship length direction; the second chain conveying belt is arranged on the side wall, close to the firstship body, of the second ship body in the length direction of the ship, the second chain conveying belt and the first chain conveying belt are symmetrically arranged, and the fishing device is arranged between the first chain conveying belt and the second chain conveying belt. When the first chain conveying belt and the second chain conveying belt rotate in the same direction at the same time, thefishing device can salvage garbage between the first ship body and the second ship body into the collecting box. Garbage in different water areas can be rapidly collected, different kinds of garbageare stored in a classified mode, and the garbage collection efficiency is improved.
Owner:ZHEJIANG OCEAN UNIV
Catamaran sheet body design method and catamaran produced by using same
InactiveCN103770902AReduce frictional resistanceInduced uninstallWatercraft hull designVessel partsHullShip master
The invention provides a catamaran sheet body design method relating to the technical field of ship equipment and a catamaran produced by using the same. The design method comprises the following steps: symmetrically arranging two separate sheet bodies relative to the vertical center plane of the catamaran body along the length direction of the catamaran; setting the sheet body contour line of each separate sheet body encircled in a horizontal direction to be composed of a first sheet body arc and a second sheet body arc connected with each other and to be spindle-shaped; setting two sharp ends of the sheet body contour line to sequentially be a sheet body head end and a sheet body tail end from front to back along the length direction of the catamaran, and connecting the sheet body head end with the sheet body tail end by a straight line to form a sheet body head end and tail end connecting line; making the first and second sheet body arcs to be asymmetrically arranged relative to the sheet body head end and tail end connecting line. The catamaran provided by the invention can be used as scientific surveying ships, unmanned surface vehicles, passenger ships and the like; the catamaran can be ensured to have small unit area drainage frictional resistance and small unit area drainage residual resistance at low and high navigational speeds.
Owner:SHANGHAI JIAO TONG UNIV
Ship probability conflict detection method based on minimum safe distance model
PendingCN113536544AAccurate understandingQuick understandingDesign optimisation/simulationProbabilistic CADNormal densityAlgorithm
The invention discloses a ship probability conflict detection method based on a minimum safe distance model. The method comprises the following steps: S1, obtaining ship information of a ship and surrounding target ships; s2, calculating the relative direction and the relative distance of the target ship relative to the ship; s3, screening the minimum safe distance between the ship and the surrounding target ship in the specified azimuth interval within the preset time period; s4, performing data point denoising on the screened minimum safety distance; s5, constructing a mathematical model of the MSD, the ship length, the navigational speed and the relative orientation; s6, generating random sampling points according to the probability density function of the ship speed based on the Monte Carlo thought, inserting each random sampling point into the ship uncertainty motion equation model, and solving the conflict probability by using a deterministic solver. According to the method, a ship driver can be helped to discover ships with high conflicts in time in the sailing process, the sailing risk can be known more accurately and rapidly, so that a control decision for avoiding the risk is made, and the sailing safety is improved.
Owner:WUHAN UNIV OF TECH
Water traffic risk dynamic test method, medium and system
PendingCN113469504ARealize quantitative descriptionDesign optimisation/simulationResourcesEnvironmental resource managementDynamic testing
The invention discloses a water traffic risk dynamic test method, medium and system, and the method comprises the steps of building an internal information set of a water traffic system through the export of ship equipment, the collection of a maritime department, and the consultation, investigation and extraction of information of a captain, wherein the information set comprises navigation environment information, man-machine interaction information and ship-shore communication information; extracting and measuring non-uniform characteristics of internal information transmission of a water traffic system in combination with an information flow theory, and realizing water traffic risk dynamic characteristic extraction and analysis modeling by utilizing wavelet transform and spectral analysis; using a data driving method to construct a water traffic risk dynamic test model; and finally, inputting the abnormal characteristic value of the water traffic system information of the test water area into the risk dynamic test model to obtain a risk calculation value of the water area. According to the invention, the dynamic test of the water traffic risk can be rapidly realized, and the efficiency and pertinence of water traffic safety supervision are improved.
Owner:CHONGQING JIAOTONG UNIVERSITY
Ship navigation feature and preference analysis method based on AIS data
ActiveCN111583722AImprove targetingImprove efficiencyCharacter and pattern recognitionMarine craft traffic controlEngineeringManagement efficiency
The invention discloses a ship navigation feature and preference analysis method based on AIS data and belongs to the field of ship traffic. The ship navigation characteristic and preference analysismethod based on the AIS data, the static information and the dynamic information contained in the ship AIS data are combined, in the navigation operation process of the ship in the navigation channel,the ship speed characteristics of different types of ships in different time periods and the navigation preferences of different types of ships with different ship lengths are explored, the parameters required by the navigation channel and anchorage ground trafficability simulation dynamic simulation research are determined, the pertinence of maritime affair management in ship navigation is enhanced, and management efficiency is improved.
Owner:DALIAN UNIV OF TECH
Pre-assembly construction and turnover hoisting method for rudder horn block of large ship
InactiveCN112193386AImprove matchImprove work efficiencyWaterborne vesselsAssembly (construction)Rudder
The invention discloses a pre-assembly construction and turnover hoisting method for a rudder horn block of a large ship. The pre-assembly construction and turnover hoisting method comprises the following steps: step 1, a block division method and a construction method for the rudder horn block: A1, a division method for the rudder horn block; A2, a segmented construction method of the rudder hornblock; A3, a block construction method of the rudder horn block; step 2, an inverse pre-assembly construction method; step 3, a pre-assembly turnover method: A1, the length direction of the pre-assembly is consistent with the length direction of a ship in a dock; A2, the ship length direction of the pre-assembly is perpendicular to the length direction of the ship in the dock. High-altitude operation of a lower deck and a lower structure is flattened, high-altitude positioning, assembling, welding and coating difficulties are avoided through flat ground operation, the safety risk is reduced,the total assembly operation efficiency is improved, a time period foundation is laid for rudder system boring operation after block completion, and the method is universal for various ship types, particularly for simultaneously building various large ships in large docks.
Owner:SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
Transverse arc-shaped bulkhead anti-explosion protection structure for broadside of ship
InactiveCN113879457AImprove anti-knock and anti-shock performanceHigh deformation energy absorption efficiencyHull bulkheadsExplosion protectionStructural engineering
The invention provides a transverse arc-shaped bulkhead anti-explosion protection structure for the broadside of a ship, belonging to the field of ship protection. The structure of the invention overcomes the problems that an existing bulkhead protection structure is insufficient in protection optimization and poor in protection capacity. The structure comprises a liquid tank inner plate, a watertight bulkhead and a plurality of arc-shaped plates, wherein the liquid tank inner plate, the watertight bulkhead and the arc-shaped plates are arranged between and connected with bulkheads, the arc-shaped plates are welded between the wired liquid tank inner plate and the watertight bulkhead and transversely arranged in the length direction of the ship, the ends of the arc-shaped plates are connected with a transverse bulkhead, the liquid tank inner plate and the watertight bulkhead are integrally welded to a liquid tank outer plate, the liquid tank outer plate and tank section outer plates are connected through a plurality of rib plates, and a plurality of explosion venting holes are formed in the rib plates. The structure is mainly used for protection of the broadside of a large ship.
Owner:HARBIN ENG UNIV
Ship collision risk assessment method and device and storage medium
PendingCN114595776AEfficient analysisCharacter and pattern recognitionResourcesAlgorithmIntelligent management
The invention provides a ship collision risk assessment method and an application method thereof, which are used for dynamically assessing ship collision risks under different conditions. According to the frame, collision results are identified under different conditions according to the experience of a ship captain, collision parameters are evaluated, and the importance of each collision parameter is weighted. According to the method, information is summarized by using an evidence reasoning method, real-time collision risk assessment is allowed to be performed on collision results, collision parameters of each ship are assessed under different collision conditions, and scientific and effective analysis and intelligent management of ship traffic are realized.
Owner:JIMEI UNIV
Method for conducting linkage transportation on ship master segment through flat cars
InactiveCN109625170AImprove the construction processReduce construction costsVessel partsShip masterLinkage concept
The invention relates to a method for conducting linkage transportation on a ship master segment through flat cars. The method includes the following steps that according to the line type of the integrally-assembled ship master segment, serial-connection linkage or parallel-connection linkage is determined to be adopted; the two flat cars are driven to a transport starting point and are within a master segment crane transporting range, according to needs, the two flat cards are connected in parallel or in series to be placed, and linkage debugging is conducted; sole timbers are placed in advance at the corresponding positions of the flat cars or sole timbers and auxiliary supports are placed after a portal is placed on piers; the master segment is transported through a crane to the flat cars, and it is ensured that the master segment is stably placed on the flat cars; according to a set route, the two flat cars are adopted for transporting the ship master segment to a construction scene through linkage. According to the method for conducting linkage transportation on the ship master segment through flat cars, the situation is reduced greatly that there are no or few integral assembly places, and as a result the period of integral assembly is insufficient, the construction cost is lowered, and production efficiency is improved.
Owner:SHANGHAI JIANGNAN CHANGXING SHIPBUILDING
Collision avoidance auxiliary decision-making method based on ship driver preference
PendingCN113032896AIn line with the habitReduce work intensityGeometric CADMarine craft traffic controlDriver/operatorClassical mechanics
The invention discloses a ship driver preference-based collision avoidance aid decision-making method. The scheme comprises the following steps of S1, collecting position, speed, course and captain information of a ship and surrounding ships; S2, a target ship ship domain model is established according to ship domain parameters input by a driver, and the invasion degree and invasion time of the target ship ship domain are calculated through analytic geometry to serve as a basis for judging whether potential ship collision danger exists or not; S3, when the potential collision danger exists, judging the meeting situation according to the side angle of the target ship and the side angle of the ship relative to the target ship, generating a collision avoidance steering search range, and calculating a non-inferior solution front through an improved NSGA II multi-target algorithm; S4, performing trial operation on the collision avoidance scheme on the non-inferior solution frontier through the ship control model and the ship movement model of the ship, and recording trial operation track information; And S5, displaying the trial operation track and related information of the collision avoidance scheme to a driver, and providing reference for the driver to select the collision avoidance scheme.
Owner:WUHAN UNIV OF TECH
Method for swash suppression of adjustable liquid tank
PendingCN113772021ADissipate sloshing energyReduce shock pressureFor bulk goodsStiffness coefficientEngineering
The invention discloses a method for swash suppression of an adjustable liquid tank. One or more longitudinal partition plates distributed discontinuously are arranged at the bottom of the liquid tank in the length direction of the ship, a plurality of sliding rails are arranged in the transverse direction, and the longitudinal partition plates are connected with the sliding rails to move in the width direction of the ship. The longitudinal partition plate is connected with the bulkhead through a spring and a damper. The stiffness coefficient of the spring and the damping coefficient of the damper can be adjusted in real time, parameters of the spring and the damper are adjusted according to the liquid carrying rate of the liquid tank and monitoring of external excitation, the actual first-order resonance frequency of liquid in the tank is made to be far away from the external excitation frequency, and resonance is prevented. Meanwhile, when the liquid in the tank sloshes, the energy of liquid sloshing can be absorbed and dissipated under the combined action of the longitudinal partition plate, the spring and the damper, so that the impact pressure borne by the whole wall face of the liquid tank is reduced, and the service life of the longitudinal partition plate is prolonged. Therefore, according to the scheme, the probability of safety accidents caused by sloshing of the liquid tank is reduced, and the ship traveling safety is guaranteed.
Owner:JIANGSU OCEAN UNIV
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