79results about "Water acting propulsive elements" patented technology

An outboard motor includes a steering mechanism including a pinion located in a central portion of an outboard motor body in a right-left direction and operable to rotate together with the outboard motor body, a rack operable to linearly move to rotate the pinion, and a rack position detector on a first side of the rack opposite to the pinion to detect a position of the rack.

The invention relates to the technical field of ship shafting measurement, and discloses a polar region ship shafting comprehensive measurement system and method, and the system comprises a data collection module, a preprocessing module, a data processing module, and an evaluation module. The data acquisition module acquires a strain signal, a vibration acceleration signal, a temperature signal, an axial displacement signal and a radial displacement signal of a shaft system through a sensor group, and the preprocessing module performs wavelet packet decomposition and adaptive threshold denoising, mean filtering and triple standard deviation criterion abnormal value elimination processing on the signals. The data processing module fuses the data of the same physical quantity based on an improved Kalman filtering algorithm and dynamically adjusts the weight of the fused data to obtain final optimized data, and the improved Kalman filtering algorithm comprises the step of introducing a temperature drift compensation factor into a state transition equation, and the evaluation module predicts potential fault types and development trends through an operation state evaluation model based on the optimization data.

The present disclosure provides an information interaction method, system, and apparatus, a storage medium, and an electronic device. The method includes: obtaining a type of a target environment in which a target robot currently operates, where the type of the target environment includes an underwater environment and a non-underwater environment; determining a target communication mode based on the type of the target environment, where the target communication mode is used to indicate a communication mode between the target robot and a charging station; and controlling the target robot to establish a communication connection with the charging station in the target communication mode and controlling the target robot to perform information interaction with a target terminal via the charging station.

Drive unit for a foil-supported watercraft, comprising a drive motor, a flexible shaft and a propeller unit, characterized in that the drive motor is arranged in the support body and is connected to the propeller unit located outside the support body via the flexible shaft.

A marine propulsion system, supported by a strut, which comprises an inner propeller shaft supporting a first propeller adjacent a trailing end thereof, and the inner propeller shaft is connected to the drive shaft for receiving and supplying a first portion of torque to the first propeller as well as transfer thrust, generated by the first propeller, along the inner propeller shaft back to the drive shaft. An outer propeller shaft supports a second propeller adjacent a trailing end thereof, and the outer propeller shaft surrounds the inner propeller shaft. A planetary gear assembly receives a second portion of the torque and supplies the torque to the outer propeller shaft so that the second propeller rotates in an opposite direction to the first propeller. A portion of the planetary gear assembly is accommodated vertically above a flat end face of the strut for reducing hydrodynamic drag of the strut.

The utility model discloses a stern shaft bracket fairing, a boat power device and a boat, the stern shaft bracket fairing comprises a main body, the middle part of the main body is provided with a through hole for a stern shaft to pass through, the outer diameter of the main body is gradually increased towards one side of a shaft hub of a stern shaft bracket, the side of the main body towards the shaft hub is provided with a bottom wall, the bottom wall is provided with a fixing hole, and the fixing hole is provided with a through hole. And the shaft sleeve is fixedly connected with the hub. Through the conical structure design that the outer diameter of the main body is gradually increased towards the shaft hub side, a gradually-changed guide surface can be formed in the fluid flowing direction, and the impact resistance between the front end of the shaft hub of the stern shaft bracket and a water body during sailing is remarkably reduced; moreover, the flow guide cover can be rigidly connected with the shaft hub through a mechanical fastener due to the arrangement of the bottom wall fixing hole, so that an integrated protection structure is formed, and the structural deformation and displacement risks generated under the navigation dynamic load are avoided; the three functions of resistance reduction, cavitation corrosion inhibition and foreign matter blocking are integrated on the whole, finally, the power transmission efficiency of the ship is improved, and the service life of the propeller and the service life of the bearing are prolonged.

The invention belongs to the technical field of marine propellers, and particularly discloses a marine controllable-pitch propeller, a ship and a method. The marine controllable-pitch propeller comprises a hub cap, a balance block, a blade assembly, a propeller shaft, a driving inner shaft and a driving mechanism. According to the controllable-pitch propeller for the ship, the ship and the method, the blades can be driven to swing forwards or backwards to the set pitch angle by driving the handle to swing forwards or backwards by the set angle, and the controllable-pitch propeller is simple in structure, safe, reliable and low in cost; by adjusting the propeller of the ship to different pitch angles, the propeller can be matched with the low-navigational-speed or high-navigational-speed navigation working condition of the ship, the power of a main engine of the ship can be fully exerted, the operation requirement of the trawler can be effectively met, and the propeller is suitable for being applied and popularized on the trawler.

Systems and methods for utilizing nuclear-based marine craft to generate electricity for external or grid usage are disclosed. In accordance with some embodiments, the system may include a nuclear-based marine craft having a propeller shaft and an electrical generator coupled external to the marine craft and configured to transmit generated electricity. In accordance with some other embodiments, the system may include a nuclear-based marine craft having a nuclear reactor and a turbine, a dock or barge having its own turbine and electrical generator, a steam outlet pipe connecting the nuclear reactor to the dock or barge turbine, and a steam inlet pipe connecting the dock or barge turbine back to the nuclear reactor, whereby heated steam from the nuclear reactor spins the dock or barge turbine, which then powers the electrical generator on the dock or barge to generates electricity.

The present invention relates to a shaft epoxy resin forging and a shaft forging epoxy coating method, comprising a shaft forging, wherein the surface of the shaft forging is coated with a bottom adhesive resin layer, a bottom spiral glass fiber reinforced plastic reinforcement tape is provided on the bottom adhesive resin layer, the bottom spiral glass fiber reinforced plastic reinforcement tape surface is impregnated with adhesive resin to form a second adhesive resin layer, the second spiral glass fiber reinforced plastic reinforcement tape is wrapped around the second adhesive resin layer, the second spiral glass fiber reinforced plastic reinforcement tape surface is impregnated with adhesive resin to form a third adhesive resin layer, the third spiral glass fiber reinforced plastic reinforcement tape is wrapped around the third adhesive resin layer, the third spiral glass fiber reinforced plastic reinforcement tape surface is impregnated with adhesive resin to form a fourth adhesive resin layer, the fourth spiral glass fiber reinforced plastic reinforcement tape is wrapped around the fourth adhesive resin layer, and a fifth adhesive resin layer (10) is coated on the fourth spiral glass fiber reinforced plastic reinforcement tape (9). Advantages: The coating layer produced by this method is uniform and dense, with no defects such as bubbles and protrusions on the surface. It can completely isolate the shaft from contact with seawater or seawater vapor, achieving the purpose of corrosion and rust prevention.

The utility model provides a split type generator rotor expansion support for a ship transmission shaft, relates to the technical field of ship power generation, and is mainly used for solving the problem that a locking ring cannot form a complete inner conical surface after being assembled in the prior art. The split type generator rotor expansion support for the ship transmission shaft comprises a power output ring and a locking ring. The locking ring is composed of a split body A and a split body B, two I-shaped grooves are formed between the split body A and the split body B, I-shaped key strips are installed in the I-shaped grooves, and the split body A and the split body B are connected into an annular body through the I-shaped key strips. When the expansion bracket is assembled, the split body A and the split body B can be connected into an annular body through the two I-shaped key strips, so that the influence of the kerf width on the assembly is eliminated, a complete inner conical surface can be formed after the locking ring is assembled, the tightening force applied to the power output ring by the locking ring is improved, and the service life of the power output ring is prolonged. And the output torque of the whole expansion bracket is increased.

The utility model discloses a lifting type full-rotation steering oar lifting sealing structure which comprises a sealing seat and a lifting shaft, a sealing cavity is formed in the sealing seat, the sealing cavity penetrates through the sealing seat in the vertical direction, the lifting shaft penetrates through the sealing cavity, and the lifting shaft is in sliding fit with the sealing seat; a first sealing ring, a second sealing ring, a guide ring and a third sealing ring which are sequentially arranged from top to bottom are mounted between the lifting shaft and the sealing seat, the first sealing ring, the second sealing ring, the guide ring and the third sealing ring are mounted on the sealing seat, and the first sealing ring, the second sealing ring, the guide ring and the third sealing ring are in sliding fit with the lifting shaft. In the scheme, the three sealing rings form a triple sealing barrier between the sealing seat and the lifting shaft, so that seawater intrusion can be effectively prevented; the guide ring can play a role in guiding and can also bear thrust generated when the propeller works, and the situation that the sealing effect is affected by displacement of the lifting shaft is prevented.

The utility model provides a bionic robot based on a jellyfish movement mechanism. The bionic robot comprises a driving module, M mouth tentacles and an umbrella structure composed of N umbrella tentacles. Each mouth tentacle is in transmission connection with the driving module through a tentacle swinging transmission mechanism, so that the rotation of the driving module is converted into the swinging motion of the mouth tentacles around the own axis; the umbrella tentacles are in transmission connection with the driving module through the umbrella opening and closing mechanism so that rotation of the driving module can be converted into opening and closing movement of the umbrella structure, and therefore the umbrella tentacles can swing. The bionic robot is simple in structure, cooperative movement of opening and closing of the umbrella portion and swinging of the mouth tentacle can be achieved, and movement energy consumption is effectively reduced.

Described herein are examples of stiffening shafts, which in some cases are adapted to couple to a marine vessel. An exemplary stiffening shaft can be used to extend a motor from the marine vessel or be used as a shallow water stick anchor. The exemplary stiffening shafts can include a plurality of linked vertebrae stacked to form a column and at least one inelastic tension element threaded longitudinally through the plurality of vertebrae. The shaft can have a flexible configuration when the at least one tension element is released and a stiffened linear configuration when the tension element is tensed to react to torque and bending moments. Alternatively, the stiffening shaft can be used as a shallow water stick anchor for a marine vessel by piercing the bottom of a marine environment (e.g., a sea bed, a lake bed, a river bed, etc.).

The application relates to a synchronous automatic clutch full disengaging device and method, and relates to the technical field of a marine synchronous automatic clutch. The application solves the problem that the existing synchronous automatic clutch cannot complete the single test run of a marine power main engine when the ship is stationary at a wharf. A pressing block is coaxially inserted into a pressing block assembly hole of an output part, the upper end of a gear sleeve is coaxially inserted into a gear sleeve assembly hole of the pressing block, a driving screw sleeve end is provided with a transmission gear, the transmission gear is meshed with a lower end connecting gear of the gear sleeve, a locking sleeve is coaxially inserted into a gear sleeve hole, a center rod is coaxially inserted into a center rod assembly hole of the locking sleeve, a tail end of the center rod is provided with a step, a spring is sleeved on the tail end step of the center rod, the upper end of the spring is in contact with a step surface of the center rod assembly hole, and the head of the center rod is in contact with a sliding part. The application is used for realizing the single test run of the power main engine when the ship is stationary at the wharf.

This invention discloses a biomimetic jellyfish robot, comprising a base, a drive cam, a water-repelling structure, a sliding structure, and a tensioned integral structure. The base has a sliding hole; the drive cam, driven by a motor, is mounted on the base via a rotating shaft; the water-repelling structure is rotatably connected to the base; the sliding structure is installed within the sliding hole; the sliding structure corresponds in position to the drive cam; the water-repelling structure and the sliding structure are connected via a transmission connection through the tensioned integral structure, and the tensioned integral structure is rotatably connected to a support plate on the base. This invention combines a tensioned integral structure with a biomimetic jellyfish, utilizing the adaptive characteristics of the tensioned integral structure to make the mechanical motion efficiency of the biomimetic jellyfish more efficient, simplifying the underwater robot structure, resulting in smooth movement, more closely resembling the jellyfish's rapid contraction and slow expansion characteristics, and improving transmission efficiency.

The invention provides a carbon fiber composite material thrust shaft which comprises cylindrical composite material shaft bodies on the two sides, and the two cylindrical composite material shaft bodies are coaxially and oppositely arranged. The composite thrust rings are connected between the cylindrical composite shaft bodies on the two sides and connected with the ends, close to each other, of the cylindrical composite shaft bodies on the two sides respectively. And the metal flanges at the two ends are arranged at the other end of the cylindrical composite shaft body. Through the cylindrical composite shaft body made of the carbon fiber composite and the composite thrust ring, the technical problem of eccentricity can be solved under the condition of large load.

The invention discloses a large-span complex molded line bracket and a casting method thereof, belongs to the technical field of casting, and solves at least one of the problems that a large-span complex molded line bracket casting is easy to deform, a molded line is not easy to control and the size precision is low in the prior art. The casting method of the large-span complex molded line bracket comprises the following steps: designing a casting lacing wire during casting, welding the lacing wire before heat treatment, cutting off the welding lacing wire after heat treatment, scribing and detecting after 24 hours, and re-welding the lacing wire after scribing. The large-span complex molded line support prepared through the casting method is good in size control, and the actual casting size is within the size tolerance range.

The invention discloses a marine permanent magnet thrust bearing device which comprises a thrust shaft, and flange assemblies are arranged at the two ends of the thrust shaft. And the permanent magnet module assembly is arranged on the thrust shaft in a sleeving mode, and the permanent magnet module assembly generates a magnetic field and is used for preventing axial movement of the thrust shaft. According to the permanent magnet module assembly, a multi-layer nested permanent magnet stator assembly and a multi-layer nested permanent magnet rotor assembly are stacked in a crossed mode to form a crossed and stacked permanent magnet arrangement structure, a hybrid Halbach array magnetized magnetic circuit design structure is adopted to generate a magnetic field, and when the thrust shaft axially moves, the thrust shaft is driven to rotate by the magnetic circuit design structure. The multi-layer nested permanent magnet stator assembly and the multi-layer nested permanent magnet rotor assembly generate magnetic force for preventing the thrust shaft from moving. The single-layer permanent magnet rotor assembly and the single-layer permanent magnet stator assembly achieve radial suspension through magnetic force to form an air gap, the stator assembly and the rotor assembly are not in physical contact, the friction loss of the thrust bearing under the working conditions of starting and stopping, large thrust, high rotating speed and the like is reduced, the vibration isolation performance of the thrust bearing is improved, and the service life of the thrust bearing is prolonged.

The present invention relates to an autonomous water vehicle for collecting and separating waste from aquatic environments, thereby enabling the efficient extraction of algae from water bodies. The autonomous water vehicle comprises a floating body, a driving unit, a conveyor unit, a scraping assembly, a first capturing unit, a second capturing unit, and a control unit. The autonomous water vehicle reduces operational costs while being adaptable for lakes, rivers, and small water bodies, making it ideal for environmental clean-up projects. The autonomous water vehicle is continuously monitored by a user, thereby improving efficiency and convenience. The autonomous water vehicle utilizes capturing units and GPS tracker for enabling precise navigation, real-time detection of floating waste, and obstacle avoidance. This integration ensures efficient route optimization for enhanced cleaning performance.

The invention discloses a ship stern shaft multistage sealing device capable of preventing oil leakage, and relates to the technical field of sealing devices.The ship stern shaft multistage sealing device comprises a stern shaft tube, a plurality of bearings are arranged in the stern shaft tube, a stern shaft used for driving a propeller to rotate is arranged in the stern shaft tube in a sleeved mode, and sealing mounting shells are arranged at the two ends of the stern shaft tube correspondingly; a sealing device used for sealing the two ends of the stern shaft tube is arranged in the sealing installation shell, a triangular block at one end of a hydraulic push rod drives an extrusion ring to be adjusted in a small range, and the extrusion ring applies radial extrusion force to a spring sealing ring through a first wedge block and a second wedge block; the clamping force between the spring sealing ring and the stern shaft can be automatically adjusted through the hydraulic push rod according to the draft of a ship and the resistance of seawater, the sealing effect can be effectively improved, and lubricating oil is prevented from leaking; meanwhile, after the clamping force is adjusted, the stability of the tail shaft during rotation can be improved according to different resistances borne by the propeller.

The utility model discloses a tail shaft of an emergency engineering ship. The tail shaft comprises a main body assembly, wherein the main body assembly comprises a tail shaft body and a mounting groove; the mounting groove is formed in the tail shaft body; the mounting assembly comprises a mounting disc, a rotating ring, a bolt, a clamping groove, a plug and a penetrating groove; the mounting disc is mounted at one end of the tail shaft body, the rotating ring is rotationally connected to the exterior of the mounting disc, the bolt is in threaded connection to the outer end of the rotating ring, the clamping groove is formed in the inner side wall of the mounting groove, the plug is fixedly connected to the center of the bottom end of the mounting disc, and the penetrating groove is formed in the exterior of the plug. The mounting assembly further comprises a movable rod, a clamping plate, a guide disc, a rotating gear and a threaded groove. The problems that when an existing tail shaft is installed by a worker, a large number of accessories need to be used for auxiliary installation, gaps are likely to be generated at the installation position after installation, the installation position of the tail shaft is likely to loosen after long-time use, and therefore normal use of the tail shaft is affected are solved.

The application belongs to the field of vibration isolation and noise reduction equipment, and discloses a variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator and a use method. The variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator comprises a supporting assembly, a positive stiffness assembly and a negative stiffness assembly. The positive stiffness assembly provides static bearing capacity and is composed of an air spring and a linear spring, and the negative stiffness assembly is composed of a magnetic group and a supporting structure thereof, and the purpose of reducing dynamic stiffness is achieved by being connected in parallel with the positive stiffness assembly. The variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator has large static stiffness and small dynamic stiffness, three-way forces generated by the movement between the inner magnetic group and the outer magnetic resistance are used to offset a part of three-way forces generated by the air bag, the function of reducing stiffness is realized, the variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator can adapt to the change of load working conditions, has a wider application scene and better three-way low-frequency vibration isolation performance, a wide vibration isolation frequency band, and stable working performance.

The present application relates to the water surface unmanned ship hybrid power series propulsion system and switching control method, the propulsion system includes propulsion device and propulsion monitoring system, the propulsion device adopts series arrangement to realize transmission connection, including diesel engine, gear box, motor, thrust bearing, shafting and propeller which are arranged in the order from bow to stern; the propulsion monitoring system includes central monitoring station, control box, power management system. The propulsion system makes the unmanned ship meet the high and low speed requirements, realizes the diesel engine as the power source propulsion in high speed working condition, and realizes the motor as the power source propulsion in low speed working condition, which meets the requirement of long time low speed sailing; the propulsion monitoring system automatically controls the diesel engine, propulsion motor and gear box, realizes the switching of propulsion mode, simplifies the complexity of remote control console control, avoids the adverse effect of communication delay on propulsion mode switching, and improves the efficiency of unmanned ship propulsion mode state switching.

The utility model relates to the technical field of input shafts of steering oars, and discloses a sealing structure for an input shaft of a steering oar, which comprises an upper gearbox shell, an input shaft bushing is arranged outside one end of the input shaft, and an input shaft sealing seat is arranged outside the input shaft bushing. A first input shaft sealing ring and a second input shaft sealing ring are arranged in the input shaft sealing seat, a distance ring is arranged between the first input shaft sealing ring and the second input shaft sealing ring, one end of the distance ring is connected with an input shaft sealing pipe connector through an oil groove, and the input shaft sealing pipe connector is connected with a gravity oil tank through an oil pipe. By arranging the gravity oil tank, original oil injection lubrication is changed into oil immersion lubrication, the working condition of the sealing ring is improved, the service life of the sealing ring is prolonged, meanwhile, a single-channel sealing ring is changed into a double-channel sealing ring, the risk of sealing failure is reduced, pollution to the environment is reduced, maintenance is convenient, the maintenance period is shortened, and the service life of the sealing ring is prolonged. And the economic loss caused by maintenance is reduced.

The invention relates to the technical field of ship propeller shaft systems, in particular to a ship outboard tail shaft sinkage measuring method. According to the invention, the sinkage of the ship outboard tail shaft is measured based on an electromagnetic ultrasonic measurement scheme, and continuous measurement and monitoring of the abrasion loss of a tail shaft tube bearing batten can be realized, so that the abrasion condition of a tail shaft tube bearing can be mastered in real time, the safety and reliability of shaft system operation are improved, sudden failures are avoided, and the service life of the bearing is prolonged; the ship outboard tail shaft sinkage can be continuously measured, a frogman does not need to dive into the ship to conduct manual measurement close to the bottom of the tail, the labor cost is greatly saved, and the measurement safety and accuracy are improved; according to the invention, the distance measuring sensor is not in direct contact with seawater, the environmental adaptability is good, the adverse consequences of measurement errors, corrosion and aging of test elements, short service life and the like caused by direct contact between the sensor and the seawater environment are avoided, the reliability of a measurement system can be greatly improved, the application prospect is wide, and the popularization is easy.

The invention relates to a stern form for a ship propeller, applicable to the hull of single- and multi-propeller ships with a central propeller, characterized in that the cross- sections of the ship's hull, referenced as sections 8, ½, and 9, are modified in the parts between the reference lines A and B of the lines plan, shifting aft of the propeller the bulge necessary to house a shaft and a supporting bearing for the propeller itself, allowing a reduction of the hull's wetted surface, a decrease in fuel consumption, and an improvement in overall propulsive efficiency.

The application discloses a retractable four-blade wheel driving device of a vector propulsion ship and a control method, relates to the technical field of ship propulsion, and specifically relates to a retractable four-blade wheel driving device of a vector propulsion ship and a control method. The device comprises an engine, a gearbox, a gear box, a transmission rod and four groups of independently controllable blade wheels. The power of the engine is transmitted to the blade wheels through the gearbox and the gear box and the transmission rod. Each group of blade wheels is arranged on an independent telescopic support arm, the blade wheels are retracted and expanded and the angle of the blade wheels is adjusted through a rack, a telescopic shaft and a pull rod, and vector thrust is formed. The support arm adopts a guide rail type lifting mechanism, universal joints and multi-stage waterproof sealing structures are used between transmission components. The control method comprises the modes of berthing, sailing and turning in place: when berthing, part of the blade wheels are retracted, and the ship is accurately berthed by using the vector thrust; when sailing, all the four blade wheels are fully opened, and turning and oblique driving are realized through differential control; and 360-degree rotation in place is realized by reversely rotating the left and right blade wheels.

The present invention relates to the technical field of marine equipment and provides marine equipment, a ship shaft system, and a method for controlling transverse vibration thereof. The ship shaft system comprises a propeller shaft assembly and a stern shaft assembly. The propeller shaft assembly comprises a thrust shaft extending to the stern shaft assembly. The stern shaft assembly comprises a stern tube and an outer cylinder. The stern tube is sleeved on the outer surface of the thrust shaft. The outer cylinder is sleeved on the outer surface of the stern tube. A friction damping energy dissipation structure is provided between the outer cylinder and the stern tube. The friction damping energy dissipation structure comprises a friction damping sleeve and a friction damping ring. The friction damping sleeve is provided with a pre-tightening portion. The friction damping rings are sleeved on the pre-tightening portion at intervals. The friction damping rings are further provided with an array of stacked piezoelectric ceramics. When the ship shaft system is subjected to transverse vibration, the stacked piezoelectric ceramics apply a pre-tightening force, causing the outer surface of the stern tube to rub against the inner surface of the friction damping sleeve, generating energy loss and suppressing the transverse vibration of the ship shaft system.

The utility model discloses a connecting structure for connecting a tail shaft and an intermediate shaft or a short shaft of a ship, which comprises a body part, a connecting part, a connecting part and a connecting part, and is characterized in that the body part comprises a tail shaft shell and a short shaft shell; the protection part comprises a first anti-corrosion ring, a second anti-corrosion ring, a fixed insertion block, a mounting disc and a fixed insertion groove; the outer end of the tail shaft shell and the outer end of the short shaft shell are both connected with the mounting disc, the first anti-corrosion ring and the second anti-corrosion ring surround the outer surface of the mounting disc, fixing inserting grooves are symmetrically formed in one end of the first anti-corrosion ring, and fixing inserting block parts are symmetrically connected to one end of the second anti-corrosion ring. The problems that when an existing ship is connected with a tail shaft and a middle shaft or a short shaft in actual use, the tail shaft and the middle shaft or the short shaft are usually installed and fixed through a fastener, the tail shaft and the middle shaft or the short shaft are soaked in water for a long time, so that the surface of the fastener is corroded by water, the detached fastener cannot be continuously used, and the service life of the tail shaft and the middle shaft or the short shaft is influenced are solved. And even the fastening piece is difficult to disassemble when the fastening piece is serious.