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39 results about "Fin stabilizer" patented technology

Fin stabilizer, fin or small wing mounted on a ship or aircraft in such a way as to oppose unwanted rolling motions of the vehicle and thus contribute to its stability. The term also refers to the tail protuberances on bombs, artillery shells, and rockets to maintain the stability of these devices in flight.

Ship fin stabilizer

The invention relates to the technical field of marine equipment, and particularly discloses a ship fin stabilizer which integrates bionic resistance reduction, intelligent control and energy recovery functions. The fins are of a layered structure of a flexible silica gel skin and a shape memory alloy wire mesh, V-shaped groove arrays are arranged on the surfaces of the fins, and the fins can be self-adaptively deformed into a U shape to reduce resistance. The driving mechanism realizes high-frequency compensation through cooperation of a hydraulic cylinder and piezoelectric ceramics; the energy recovery module converts mechanical energy into electric energy through a two-way pump-generator. According to the device, the rolling trend is predicted through the LSTM neural network, a Q-learning optimization control strategy is combined, the stabilization efficiency and energy efficiency are remarkably improved, and the device is suitable for stable control of ships under high navigational speed and complex sea conditions.
Owner:GUANGDONG OCEAN UNIVERSITY

Passive locking mechanism for fin stabilizer system and control method of passive locking mechanism

The invention belongs to the technical field of fin stabilizer systems, and particularly relates to a passive locking mechanism for a fin stabilizer system and a control method thereof.The passive locking mechanism comprises a locking pin, an oil cylinder body, a spring, an oil cylinder piston rod and a locking mechanism shell, the shell is installed on an executing mechanism, coaxial installation holes are formed in the two ends of the shell, the cylinder body is arranged in the axial direction of the installation holes, and one end of the cylinder body is sleeved with the spring; the piston rod is fixed in the shell, one end of the piston rod is a piston head and located in the cylinder body, the other end of the piston rod is installed in the installation hole, a sealing structure is arranged between the piston rod and the cylinder body, an oil cavity is formed between the piston rod and the cylinder body, the piston rod is provided with an oil channel, one end of the piston rod is connected with a hydraulic system, and the other end of the piston rod is communicated with the oil cavity. When hydraulic oil is input, the cylinder body is pushed to overcome spring force to pull the locking pin out of the fin handle slot, and when pressure is released, the spring resets to push the locking pin to be inserted into the slot. Automatic unlocking and passive self-locking are achieved, and the problems that manual bolt inserting efficiency is low, potential safety hazards are large, and a contact part is prone to abrasion are solved.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

Fin plate stabilizer

The present invention is a fin stabilizer for reducing shake of a sailing ship, the fin stabilizer being provided with: a fin configured so as to protrude from the hull of the ship; a rotating shaft capable of rotating the fin around the axis so as to accommodate the protruding fin in the hull; a protrusion fixed to the rotating shaft and protruding from the rotating shaft to the outside in the radial direction of the rotating shaft; and a hook including a restricting portion for restricting rotation of the protrusion and having a lower strength than the rotation shaft and the protrusion.
Owner:MITSUBISHI HEAVY IND MARINE MASCH & EQUIP CO LTD

Fin stabilizer

The embodiment of the invention provides a fin stabilizer, and belongs to the field of ship stabilization devices, the fin stabilizer comprises a fin blade made of a flexible material, and at least one hollow cavity is formed in the fin blade; when the fin blades are in the use state, the hollow cavities of the fin blades are filled with fluid through the fluid filling device, so that the fin blades are unfolded; when the fins are not used, fluid in the hollow cavity is discharged through the fluid discharging device, and after the fluid is discharged, the fins can be folded, shrunk and stored in the ship body. And the fin rotating arm is driven by the fin rotating power device to stretch out or retract the fin blades in the unused state into the ship body. The effects that the weight is reduced, and a large amount of occupied ship storage space is reduced can be achieved.
Owner:ZHONGCHUAN CRUISE TECH DEV CO LTD

Fin stabilizer, a vibration damping element and a watercraft

A fin stabilizer is provided for roll stabilization of a watercraft. The fin stabilizer includes a drive unit connected in a vibration-damping manner to a ship's structure. Specifically, a vibration damping element is provided between the drive unit and the hull of the watercraft wall such that a mounting portion of the drive unit is spaced from an attachment portion of the hull wall.
Owner:SKF MARINE GMBH

A passive uplock latching mechanism for a fin stabilizer system and a control method thereof

The application belongs to the technical field of fin stabilizer system, and particularly relates to a passive locking mechanism for a fin stabilizer system and a control method thereof, which comprises a locking pin, a cylinder body, a spring, a cylinder piston rod and a locking mechanism shell, the shell is installed on an actuator, coaxial mounting holes are arranged at two ends of the shell, the cylinder body is arranged axially along the mounting hole, the spring is sleeved at one end of the cylinder body, the other end of the cylinder body is connected with the locking pin, the spring is abutted against a cylinder body step and an inner end surface of the shell at two ends, the piston rod is fixed in the shell, one end of the piston rod is a piston head and is located in the cylinder body, the other end of the piston rod is installed in the mounting hole, a sealing structure is arranged between the piston rod and the cylinder body and an oil cavity is formed, the piston rod is provided with an oil channel, one end of the oil channel is connected with a hydraulic system, and the other end of the oil channel is in communication with the oil cavity, when hydraulic oil is input, the cylinder body is pushed to overcome the spring force to make the locking pin be pulled out of a fin handle insertion slot, and when pressure is released, the spring is reset to push the locking pin to be inserted into the insertion slot. The application realizes automatic unlocking and passive self-locking, and solves the problems of low efficiency, great safety hazards and easy wear of a contact part of manual insertion.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

Power generation buoy capable of converting wave energy through water turbine and mooring method of power generation buoy

The invention relates to the technical field of ocean energy development and utilization, in particular to a power generation buoy capable of converting wave energy through a water turbine and a mooring method thereof.The power generation buoy comprises a floating body, a connecting rod, the mixed-flow water turbine and anti-rolling fins, the floating body is fixedly installed above the connecting rod, and the lower portion of the connecting rod is connected with the mixed-flow water turbine; the anti-rolling fins are circumferentially and evenly distributed and fixed to the surface of the whole power generation buoy, the mixed-flow water turbine is mainly composed of an upper flow guide cylinder, a rotating wheel, an inner sealing cover, an outer sealing cover and a lower flow guide cylinder which are coaxially installed from top to bottom, and the inner sealing cover is fixed to the outer side of the circumference of rotating wheel blades. The upper and lower circumferential surfaces of the inner sealing cover are fixedly connected with the end surfaces of the cylindrical shell of the upper guide cylinder and the cylindrical shell of the lower guide cylinder respectively; the upper and lower mounting end surfaces of the outer sealing cover are fixedly mounted on the upper guide cylinder and the lower guide cylinder through rubber seals. The floating body is of a float type structure, the mixed-flow water turbine is adopted, and the wave energy conversion efficiency is effectively improved through the structures such as anti-rolling fins on the outer surface.
Owner:JIMEI UNIV

Pivot column bearing for pivotable fin stabilizer

To provide a pivot column bearing for a pivotable fin stabilizer of a ship capable of enabling both the automatic compensating for a positional deviation and the reliable operation in the case of the minimum positional deviation or no positional deviation.SOLUTION: The present disclosure is the pivot column bearing for a fin stabilizer of a ship with at least one spherical slide bearing and is a fin stabilizer.SELECTED DRAWING: Figure 4
Owner:AB SKF SKF PATENT DEPARTMENT +1

Drive device and fin stabilizer

A drive device of a fin stabilizer is for pivoting a stabilizer fin about its fin shaft axis. The drive device includes a drive motor with an output shaft and a transmission including an input shaft. A fixing device for fixing the stabilizer fin in a pivot position acts directly on the transmission input shaft. A coupling is for conjoint-rotation connection of the transmission input shaft to the motor output shaft disposed at least sectionally in an interior of the motor output shaft. The coupling is connected to a free end of the transmission input shaft and has a flange connected to an annular end surface of the motor output shaft.
Owner:SKF MARINE GMBH

Integrated large non-retractable fin stabilizer hydraulic system and control method thereof

The application belongs to the field of ship stabilizer fins and hydraulic technology, and particularly relates to an integrated large non-retractable stabilizer fin hydraulic system and a control method thereof. The hydraulic system comprises a main pump, a motor, an auxiliary pump, a reset unlocking and servo valve group and an oil tank. A first shaft end of the motor drives a turning fin pump in the main pump to provide energy for a main circuit, and a second shaft end of the motor drives the auxiliary pump to provide energy for a servo, reset and unlocking circuit. The main pump integrates the turning fin pump, an oil supplement pump, a filter module, an oil supplement module, an overflow flushing module and a short circuit valve group. An output end of the turning fin pump and a turning fin oil cylinder of an actuator constitute a closed hydraulic circuit to realize forward and reverse turning fins. The oil supplement pump is driven by the motor, connected to the main circuit through the filter and the oil supplement module, and connected to a reset oil cylinder through a reset electromagnetic valve. The application realizes integrated lightweight design by integration and optimization, reduces hydraulic components and pipelines, controls oil temperature, improves system stability and reliability, and is suitable for the demand of large ships for high-performance stabilizer fin devices.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

Tandem double-rotor cross-medium unmanned aerial vehicle

The invention belongs to the technical field of cross-medium unmanned aerial vehicles, and discloses a tandem type double-rotor cross-medium unmanned aerial vehicle which comprises a bow part, a middle fuselage and a stern part which are connected into a whole in a sealed mode through end seals. The middle fuselage is formed by longitudinally butting two fuselage sections and penetrates out of the stern end seal after penetrating through the bow end seal, the two fuselage sections and the middle end seal in sequence through a full-length bolt, and the two ends of the middle fuselage are locked through clamping plate nuts respectively. The unmanned aerial vehicle has a high gravity center mode that the motor is higher than the vehicle back and a low gravity center mode that the motor is installed in the vehicle body and provided with the fin stabilizer. The problems that an existing cross-medium unmanned aerial vehicle is low in underwater propulsion efficiency and large in navigation power consumption are solved, the problem that additional airborne equipment influences the gravity center and stability of the unmanned aerial vehicle is solved, good flight performance and underwater navigation capacity are achieved, and the diversified requirements of the civil field are met.
Owner:HARBIN

Integrated large non-retractable fin stabilizer hydraulic system and control method thereof

The invention belongs to the technical field of ship fin stabilizers and hydraulics, and particularly relates to an integrated large non-retractable fin stabilizer hydraulic system and a control method thereof.The hydraulic system comprises a main pump, a motor, an auxiliary pump, a zero resetting unlocking and servo valve set and an oil tank, the first output shaft end of the motor drives a fin rotating pump in the main pump and supplies energy to a main loop, and the second output shaft end of the motor drives a second output shaft of the motor; the second output shaft end drives the auxiliary pump to supply energy to the servo, zero resetting and unlocking loop, the main pump integrates a fin rotating pump, an oil supplementing pump, a filtering module, an oil supplementing module, an overflow flushing module and a short circuit valve set, the output end of the fin rotating pump and a fin rotating oil cylinder of an executing mechanism form a closed type hydraulic loop to achieve forward and reverse fin rotating, and the oil supplementing pump is driven by a motor. And the zero resetting electromagnetic valve is connected to a main loop through a filtering and oil supplementing module and is communicated with the zero resetting oil cylinder. Through integrated optimization, hydraulic elements and pipelines are reduced, the oil temperature is controlled, the stability and reliability of the system are improved, integrated lightweight design is achieved, and the fin stabilizer device meets the requirements of large ships for high-performance fin stabilizers.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

Ship anti-rolling fin variable gain robust control method and system

The present application relates to the technical field of ship control, in particular to a ship fin stabilizer variable gain robust control method and system. It includes: constructing a three-layer nested working condition judgment model based on real-time navigation data, sequentially evaluating the roll energy, resonance risk and actuator capacity to determine whether to start control. The concept of virtual leader is introduced to construct a dynamic topology to coordinate the cooperative control of multiple fin stabilizer units. A multi-objective optimization algorithm is used to set the variable gain robust control parameters to balance the roll reduction effect, energy consumption and robustness. During the control process, a three-level abnormality fusing mechanism is implemented: fine-tune the parameters when there is a slight abnormality, backtrack the working condition judgment when there is a moderate abnormality, and roll back to the historical stable strategy when there is a serious abnormality. Through performance evaluation and intermittent freezing mechanism, the parameter optimization is suspended when the working condition is stable to reduce energy consumption and equipment wear and tear, and quickly recover the response when there is a mutation. The method realizes complete control from working condition identification, cooperative control, parameter optimization to safety guarantee.
Owner:NINGBO YIYUAN SHIP ENGINEERING DESIGN CO LTD

Design method for butt joint structure of fin stabilizer base structure and ship body

The invention relates to the technical field of ships, in particular to a design method for a butt joint structure of a fin stabilizer base structure and a ship body, which comprises the following steps of: drawing a first view of a fin base vertical to a fin base central plane according to the structure of the fin base; according to the first view and the fin base positioning design drawing, the deviation position of the fin base relative to the ship body installation position is obtained; a rib plate is designed to connect the offset position of the fin base with the installation position of the ship body; a first connecting plate is designed, and the first connecting plate is arranged between the ship body and the fin base and used for connecting the ship body with the fin base; a second connecting plate is designed, and the second connecting plate is arranged between the ship body and the fin base and used for connecting the fin base with a rib plate of the ship body; and a connecting panel is designed, and the connecting panel is arranged between the inner bottom plate and the fin base of the ship body and used for connecting the inner bottom plate, the fin base and the second connecting plate. The construction difficulty can be reduced, and the working efficiency is improved.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

Ship fin stabilizer carrying positioning precision control method

The invention belongs to a ship fin stabilizer carrying positioning precision control method in the technical field of ship construction. The intersection point of the cross connecting lines of the line (2) away from the base H1 and the line (4) away from the middle B1 half width is a point C (5), and the intersection point of the cross connecting lines of the line (3) away from the base H2 and the line (19) away from the middle B2 half width is a point D (6); a half-width ground sample point E (8) is determined on the ground (7), a height level mark post (10) is arranged at the position of a ship center point (9), and a height reference point F (20) is arranged on the height level mark post (10); determining a point A (11) and a point B (12) of the fin stabilizer segmented rib plate according to the point C (5) and the point D (6); and a connecting line of the point A (11) and the point B (12) forms a fin stabilizer segmented rib plate mounting angle line (13). According to the ship fin stabilizer carrying and positioning precision control method, the steps are simple, fin stabilizer segmented rib plate carrying and positioning can be conveniently and reliably achieved, the carrying precision meets the standard requirement, and the carrying work efficiency is improved.
Owner:WUHU SHIPYARD CO LTD

Unmanned ship stabilization device

According to the technical scheme, the unmanned ship stabilization device comprises a fin stabilizer, the fin stabilizer comprises a fin head, a fin tail, a fin back and a fin belly, and the fin stabilizer comprises a first fin stabilizer (10) and a second fin stabilizer (11); the fin head of the first fin stabilizer is provided with a rotating axis which is called as a first axis; the fin head of the second fin stabilizer is provided with a rotating axis which is called as a second axis; the first axial lead and the second axial lead coincide on the same straight line; a mirror surface exists between the first fin stabilizer and the second fin stabilizer on the whole, that is, the first fin stabilizer and the second fin stabilizer are in mirror symmetry on the whole relative to the mirror surface, and the same straight line is located in the mirror surface.
Owner:SHANGHAI UNIV

Pivot column bearing for a pivotable fin stabilizer

A pivot column bearing is provided for a pivotable fin stabilizer of watercraft, the stabilizer having a column pivotable about a vertical axis. The pivot column bearing includes an upper bearing and a lower bearing, the upper and lower bearings being configured to mount the pivot column pivotably about the vertical axis. At least one of the upper bearing and the lower bearing has spherical guide surfaces.
Owner:AB SKF SKF PATENT DEPARTMENT +1

A fin stabilizer device

ActiveCN113998065BVessel movement reduction by foilsVessel movement reduction by jets/propellersElectrical controlWater flow
The application provides a stabilizer fin device, which comprises an electric control system, a hydraulic system and a fin base, and further comprises a water spraying system, wherein the water spraying system is composed of a seawater suction port, a seawater conveying pipeline, a motor, a spraying pump, a hollow fin shaft, a fin plate and a water spraying port; the fin plate is a lift force generating part, the water spraying port is installed on the upper and lower panels of the fin plate, and the water flow jetted out of the water spraying port will generate a thrust force on the fin plate in direct proportion to the flow rate and flow speed of the water flow. On the basis of the conventional stabilizer fin device, the water spraying system is additionally arranged, when a fin plate on one side strikes downward, the water spraying port on the lower panel of the fin plate sprays high-speed water flow, the fin plate is subjected to the reaction force of the water flow to generate an upward force, and the upward force is superposed with the upward force generated when the fin plate strikes downward, and vice versa, so that the stabilizing moment of the stabilizer fin can be further enhanced, and the problem of poor stabilizing performance of the conventional stabilizer fin device at low speed can be solved.
Owner:CHINA SHIP DEV & DESIGN CENT

Convertible Magnus fin stabilizer propelling system

The invention provides a convertible Magnus fin stabilizer propulsion system, and belongs to the technical field of ship navigation stabilization and auxiliary propulsion. The problems that in the prior art, a stabilization device and a wind propulsion device are independent of each other and cannot give consideration to each other, extra resistance is brought when the device does not work, and occupied space is large are solved. The device comprises a Magnus device, a mode conversion mechanical arm, a detection system and a control system, one end of the mode conversion mechanical arm is connected with an external ship body, and the other end of the mode conversion mechanical arm is connected with the Magnus device so that the Magnus device can be contained in the external ship body or moved to the two sides of the external ship body and the vertical plane relative to a deck of the external ship body; the Magnus device and the mode conversion mechanical arm execute different working modes respectively, the detection system is installed on an external ship body, electrically connected with the control system and used for collecting and feeding back signals, and the control system is installed on the external ship body, electrically connected with the Magnus device and the mode conversion mechanical arm and used for sending out commands. The method is mainly used for shipbuilding.
Owner:HARBIN ENG UNIV

A retractable loading device and testing method for retractable fin stabilizers

The present application belongs to the technical field of test benches for marine components, and specifically relates to a retractable and deployable fin stabilizer and a testing method thereof. The device comprises a fin handle, an electric cylinder, a telescopic oil cylinder and a slide rail. The fin handle has a central hole, and a rotating shaft is passed through the central hole. The upper end of the rotating shaft is connected to a retractable mechanism, and the lower end of the rotating shaft is rotatably connected to a mounting platform of the retractable and deployable fin stabilizer. An ear shaft mounting seat is provided on one side of the outer periphery of the fin handle, and a roller mounting seat is provided on the other side. The cylinder body of the telescopic oil cylinder is fixed on the mounting platform, and its push rod is rotatably connected to the ear shaft mounting seat. The bottom of the electric cylinder is fixed on the mounting platform, and a slide rail is installed on the top of its push rod. The roller mounting seat is slidably connected to the slide rail. The retractable and deployable fin stabilizer of the present application is based on the fluid resistance and fluid lift experienced by the fin when the fin is deployed outboard during navigation. It simulates the retractable and deployable mechanism overcoming the fluid load experienced by the fin when the fin is deployed outboard during actual navigation, and can truly and effectively verify the structural stability and retractable capacity of the retractable and deployable mechanism.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

A full-speed fin stabilizer that does not occupy cabin space

The present invention relates to a full-speed stabilizer fin that does not occupy cabin space, belonging to the technical field of fin stabilizers. The fin stabilizer comprises a fin angle feedback device, a rotary cylinder, a support seat assembly, a rotating shaft assembly, and a fin. The support seat assembly comprises a support shaft and a first rolling bearing. The support shaft is a hollow shaft structure, one end of which is fixed to the hull, and the other end of the support shaft is fitted with the first rolling bearing and inserted into the fin to connect with the fin. The rotating shaft assembly comprises a rotating shaft, which coaxially passes through the interior of the support shaft, one end of which is coaxially connected to the fin, and the other end is connected to a rotary cylinder mounted on the support shaft. The rotary cylinder drives the fin to rotate coaxially via the rotating shaft. At the same time, the end of the rotating shaft is connected to a fin angle feedback device mounted on the rotary cylinder. The fin angle feedback device is used to detect the angular displacement of the fin and provide feedback to the control system. The present invention integrates the traditional fin seat and actuator support seat and introduces the rotary cylinder, which can meet the requirements of a full-speed stabilizer fin that occupies a small cabin space and has a large rotation angle.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

fin stabilizer, vibration damping element and watercraft

Disclosed are a fin stabilizer for roll stabilization of a watercraft, whose drive unit is connected to a ship structure in a vibration-damping manner, a vibration damping element and a watercraft.
Owner:SKF MARINE GMBH

Ship stabilization control method and system based on multi-layer sliding mode structure

The invention discloses a ship stabilization control method and system based on a multi-layer sliding mode structure, and belongs to the field of aircraft path tracking and attitude control. Firstly, a single-parameter ITTC spectrum model is established, encounter frequency is calculated in combination with the navigational speed and the wave direction angle, and an effective wave inclination angle is obtained; the method comprises the following steps: constructing a ship rolling kinetic equation by adopting a Conoll model, and converting the ship rolling kinetic equation into a state space form containing a composite interference term; a double-layer sliding mode surface is defined, an error fractional order derivative and a nonlinear term are fused in the first layer, and a nonlinear combination function is constructed in the second layer; the control law comprises an equivalent compensation item and a switching item with a parameter adaptive law, and the uncertainty of the model is suppressed by updating an estimated parameter in real time. And finally, the control torque is converted into a fin stabilizer rudder angle to drive an execution mechanism. According to the invention, ship stabilization control under the conditions of uncertain ship parameters and unknown external interference is realized, and the ship stabilization control effect is improved.
Owner:HARBIN ENG UNIV

Fin stabilizer

A fin stabilizer is for the roll-stabilizing of a watercraft in motion, at anchor, or at zero speed, including a shaft on which a stabilizing fin is disposed. The shaft is drivable by a drive unit for changing at least one angle of attack of the stabilizing fin in the water. A cross-sectional geometry of the stabilizing fin is changeable by at least one actuator, and the stabilizing fin forms a closed surface geometry. Due to the hydraulically effective cross-sectional geometry of the stabilizing fin, which cross-sectional geometry is largely changeable by at least one actuator, a significantly increased energy efficiency of the fin stabilizer results with a simultaneously improved stabilizing effect of the fin stabilizer, in particular with respect to suppressing rolling movements of the watercraft.
Owner:SKF MARINE GMBH

Loading hydraulic system and method for fin stabilizer lift and resistance test

ActiveCN120487700AServomotor componentsServomotorsFin stabilizerMechanics
The invention relates to a loading hydraulic system and method for fin stabilizer lift and resistance tests, and belongs to the technical field of ship fin stabilizer tests. The system comprises a hydraulic unit, a lift loading oil cylinder and a resistance loading oil cylinder; the hydraulic unit comprises a lift force loading loop and a resistance loading loop; the lift force loading loop comprises a lift force loading pump with a load sensitive function; the resistance loading loop comprises a resistance loading pump; the lift force loading pump and the resistance loading pump rotate synchronously; two output ends of the lift force loading loop are respectively connected with a rod cavity pipeline and a rodless cavity pipeline of the lift force loading oil cylinder through main pipelines; the lift force loading oil cylinder provides lift force for the fin shaft in a vertical upward posture of a piston rod; two output ends of the resistance loading loop are respectively connected with a rod cavity pipeline and a rodless cavity pipeline of the resistance loading oil cylinder; the resistance loading oil cylinder provides resistance for the fin shaft in the horizontal posture of the piston rod. According to the invention, a lift force and resistance simulation loading test can be simultaneously carried out on the fin stabilizer, the loading force can be controlled in real time, and the system energy consumption is reduced.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

A contactless feedback device and control method for a ship's fin stabilizer system

The present application belongs to the technical field of ship navigation control and attitude stabilization, and specifically relates to a contactless feedback device and control method for a ship fin stabilizer system, comprising a base plate mounted on a rotating shaft; an angle sensor magnet and a sensing column fixedly mounted on the base plate, the magnet moving in a circular motion around the axis of rotation with the base plate; a main structure fixedly connected to a fixed seat, a space for accommodating the angle sensor magnet defined between the main structure and the base plate, the main structure being provided with a first arc opening, the sensing column being arranged therein and moving along a trajectory; a proximity switch and an angle sensor body having a sensing gap opposite to the magnet, the signal transmission interface being electrically connected to both. The present application achieves angle sensing and zero-position recognition in a contactless manner, overcoming the problems of mechanical stagnation and signal drift, and resolving the technical problems of existing fin angle feedback devices, such as complex structures, poor reliability of contact elements, and low zero-position recognition accuracy.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

High-precision fin angle transmission mechanism and fin angle detection method for fin stabilizer

The application relates to a high-precision fin angle sending mechanism and a fin angle detection method of a fin stabilizer, and belongs to the technical field of ship stabilizers. The fin angle sending mechanism comprises a crank, a transmission rod, a feedback rod, a connecting rod, a connecting link and a rocker. One end of the crank is fixedly connected with a fin shaft, and the other end is hingedly connected with the bottom end of the transmission rod. The top end of the transmission rod is hingedly connected with the bottom end of the feedback rod. The top end of the feedback rod is fixedly connected with the bottom end of the connecting rod. The feedback rod drives the connecting rod to move linearly. The top end of the connecting rod is hingedly connected with the top end of the connecting link, the bottom end of the connecting link is hingedly connected with one end of the rocker, and the other end of the rocker is fixedly connected with an angle sensor. The rotating radius of the crank is equal to that of the rocker. The length of the transmission rod is equal to that of the connecting link. The eccentricity of the feedback rod relative to the center of the fin shaft is equal to the eccentricity of the connecting rod relative to the center of the angle sensor. The rotation of the fin shaft is transmitted to the rocker in a 1:1 mode. The fin angle control precision and use efficiency of the fin stabilizer device are improved, and the fin angle sending mechanism can be applied to any type of rotating fin mechanism.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

A large-scale torque loading hydraulic system and method for a passive integrated fin stabilizer

This invention relates to a large-scale integrated active and passive torque loading hydraulic system and method for anti-roll fins, belonging to the field of marine anti-roll fin and hydraulic technology. The first manual directional valve's output port at position A is connected to the first and second oil circuits via parallel 1# and 2# cover-type cartridge check valves, respectively. A cover-type cartridge relief valve is connected to the second and first oil circuits via parallel 3# and 4# cover-type cartridge check valves, respectively. The cover-type cartridge relief valve is connected to the first relief valve and intersects with the output pipeline of the check valve. A second manual directional valve and a second relief valve are connected in parallel and connected to the output port pipeline of the first manual directional valve at position B. The two output ports of the second manual directional valve are connected to the first and second oil circuit pipelines, respectively. A torque loading cylinder drives the loading fin handle to rotate. This invention can perform active and passive torque loading tests on anti-roll fins using a single loading hydraulic system, resulting in high testing efficiency, high reliability, and reduced testing costs.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1

Full-speed electric drive fin stabilizer comprehensive loading test device and test method

The present application relates to a kind of full speed electric drive anti-rolling fin comprehensive loading test device and test method, belong to shipbuilding technical field, comprehensive loading test device includes loading system and monitoring system;Loading system includes universal coupling, rotary vane oil cylinder, loading unit, comprehensive loading controller, control box, start-up box;The fin shaft of the actuator of full speed electric drive anti-rolling fin is connected with rotary vane oil cylinder by universal coupling;The inlet and outlet of rotary vane oil cylinder are connected with loading unit respectively by pipeline;Comprehensive loading controller switches loading mode according to the rotary fin instruction transferred by control box, and corresponding set pressure is exported to loading unit, and loading unit is loaded according to set pressure to rotary vane oil cylinder;Start-up box controls actuator to carry out rotary fin action according to the rotary fin instruction conveyed by control box.The present application can meet the test needs of full speed electric drive anti-rolling fin under normal speed, zero speed condition, and real-time monitoring and recording to the whole process of comprehensive loading test.
Owner:THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP +1