20 results about "Fin stabilizer" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention relates to the technical field of ocean engineering and unmanned systems, and discloses a wave power unmanned ship and an intelligent control method thereof. The wave power unmanned ship comprises a ship body, a self-adaptive wave energy vector propulsion system, a collaborative anti-overturning stabilization system, a sea condition prediction feedforward control system, a navigation state global optimization control system and a central controller. Wherein the propulsion system adopts a variable cross-section hydrofoil array capable of being controlled by independent vectors, and has the functions of energy capture and attitude control; the stability system integrates hydrofoil differential control, an active fin stabilizer and rapid transverse mass adjustment, and layered collaborative anti-overturning is achieved. According to the invention, a hierarchical intelligent control architecture integrating sea condition feedforward prediction, global optimization and real-time feedback is constructed, and the central controller is used for unified coordination, so that efficient utilization of wave energy, intelligent stability control and multi-target performance optimization are realized, and the propulsion efficiency, the navigation stability and the task adaptability under complex sea conditions are remarkably improved.

The invention relates to a gearless fin stabilizer for stabilizing the position of a ship, having an electric motor as a drive unit, which is detachably connected to a fin shaft in a gearless manner by means of a coupling.

The application relates to a full-waves-direction fluid momentum wheel roll-reducing device, a floating platform and a roll-reducing control method thereof. The application is suitable for the technical field of ocean engineering. The technical scheme comprises a supporting base arranged on a floating platform; a fluid momentum wheel assembly arranged on the supporting base through a mounting piece, comprising a plurality of flexible pipe sections spliced with each other, the flexible pipe sections being arranged to form an annular circulation channel, and water inlet and outlet structures being arranged on the flexible pipe sections; a plurality of active precession telescopic assemblies arranged between the top of the floating platform and the bottom of the supporting base and arranged in a ring shape along the bottom of the supporting base, the telescopic assemblies being capable of being jointly controlled through differential telescopic strokes to drive the supporting base and the fluid momentum wheel assembly to perform a precession motion of full-directional tilting rotation; and a circulation driving assembly arranged in the inside of the annular circulation channel and used for driving the fluid in the annular circulation channel to flow in a ring shape along the channel.

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.

The invention provides an array plane antenna device arranged on a vertical fin stabilizer of an airplane and a design method. The array plane antenna device comprises a vertical fin stabilizer connecting piece, an array plane mounting platform, a front and rear array plane antenna mounting bracket, a side array plane antenna mounting bracket, a front and rear array plane antenna, a side array plane antenna and a connecting assembly, the lower end of the vertical fin stabilizer connecting piece is attached to the appearance of an airplane vertical fin stabilizer. The vertical fin stabilizer connecting piece is fixedly connected with an airplane vertical fin stabilizer through a connecting assembly. The array plane mounting platform is fixed at the upper end of the vertical fin stabilizer connecting piece; the array plane mounting platform is fixedly connected with the vertical fin stabilizer connecting piece; and the front and back array plane antenna mounting bracket and the side array plane antenna mounting bracket are connected with the vertical fin stabilizer connecting piece and the array plane mounting platform. The front and back array plane antennas and the side array plane antennas are respectively used for receiving radiation of antenna array planes at the front and back and two sides of an airplane. The array plane antenna is arranged at the top of the vertical fin of the aircraft, so that the shielding of the fuselage to the array plane is reduced.