110results about "Water acting propulsive elements" patented technology

The invention belongs to the technical field of ship propulsion shafting, and discloses a permanent magnet transmission shafting and a vibration and noise reduction performance evaluation method, the method fully considers each part having great influence on the vibration and noise reduction performance of the shafting in the transverse direction, the vertical direction, the longitudinal direction and the circumferential direction, and arranges acceleration sensors on the corresponding parts; the vibration acceleration response is acquired through the wireless acquisition module, and the device has the advantages of simple operation, convenient measurement and the like. According to the evaluation method, the difference between the coordinate systems where the acceleration sensors on the shaft and the base are located when the shaft system operates is fully considered, and rapid, effective and accurate evaluation of vibration and noise reduction performance of the shaft system in all directions can be obtained by performing coordinate transformation on acceleration responses measured under different coordinate systems; important technical support is provided for initial structural design iteration, vibration and noise reduction performance testing and the like of the permanent magnet transmission shaft system, and the method has good practicability, operability and convenience in practical engineering application.

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.

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 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.

The hydraulic center rotating device comprises a center rotating shell and a center rotating shaft rotationally installed in the center rotating shell, the two ends of the center rotating shaft extend to the outside, and a first connecting hole and a second connecting hole are formed in the top end of the center rotating shell respectively. A first connecting part and a second connecting part are arranged at the bottom end of the center rotating shaft, a first annular channel and a second annular channel are coaxially arranged between the center rotating shaft and the center rotating shell in a sealed mode, a first oil inlet hole and a first oil outlet hole are formed in the center rotating shell, and a second oil outlet hole and a second oil inlet hole are formed in the bottom end of the center rotating shaft. The first oil inlet hole, the first annular channel and the second oil outlet hole form an oil inlet channel, the second oil inlet hole, the second annular channel and the first oil outlet hole form an oil outlet channel, and the oil inlet channel and the oil outlet channel are mutually independent. According to the utility model, rotary transmission of hydraulic power can be realized, meanwhile, higher axial load can be borne, and the use requirements of ship propellers can be better met.

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.

To provide a ship capable of suppressing a load applied to a hull when the ship docks.SOLUTION: A worker transport ship 100 comprises an engine 1 as a propulsion power source, a reduction gear 3 to decelerate the speed of the engines 1, a propeller shaft 4 connected to the reduction gear 3, and a propeller 5 attached to the propeller shaft 4. The worker transport ship 100 moreover comprises a block 6 that is arranged on the forward side of a hull 10 and supports the reduction gear 3, and a fender 7 attached to the block 6 and protruding forward from the forward end of the hull 10. The ship is configured to be docked alongside by pressing the fender 7 against a pair of mooring posts.SELECTED DRAWING: Figure 2

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.

The invention discloses a base deformation self-adaptive transmission device. The base deformation self-adaptive transmission device comprises a rotating motor, a cross universal coupling, a locking nut, a first bearing assembly, a rotating limiting structure, a rotating shaft, a flat key, a supporting shaft and a second bearing assembly. The other end of the cross-shaped universal coupling is connected with the rotating shaft; one end, connected with the cross-shaped universal coupling, of the rotating shaft penetrates through the first bearing assembly and is connected with the locking nut; the other end of the rotating shaft is fixedly connected with a load; the flat key is arranged between the rotating shaft and the load; the first bearing assembly is fixedly connected with the first external base, and the second bearing assembly is fixedly connected with the second external base; one end, close to the rotating shaft, of the supporting shaft is fixedly connected with a load; the rotation limiting structure is used for limiting the rotation angle of the rotation shaft. The transmission device can adapt to the sea surface and underwater environment, deformation generated by the transmission device supporting foundation can be adjusted in a self-adaptive mode, and the rotating function can be normally achieved.

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.

A locking disc assembly structure for power output in the middle of a transmission shaft is characterized in that a locking disc assembly comprises a locking disc inner ring, a locking disc inner ring and a locking disc outer ring, the locking disc inner ring, the locking disc inner ring and the locking disc outer ring are sequentially nested from inside to outside, and conical surfaces are arranged between matching surfaces; the locking disc assembly is arranged in an annular space between the transmission shaft and the power output structural part, a locking disc middle ring is moved through a bolt, the inner diameter of the locking disc middle ring and the outer diameter of a locking disc outer ring are changed at the same time, and therefore fixed connection between the transmission shaft and the power output structural part is achieved. The locking disc inner ring, the locking disc middle ring and the locking disc outer ring are all of a split type structure, during construction, the multiple sections are directly spliced into the complete locking disc inner ring, the complete locking disc middle ring and the complete locking disc outer ring at the set positions of the transmission shaft, and therefore the locking disc inner ring, the locking disc middle ring and the locking disc outer ring cannot be detached in the construction process, and any connecting structure of an original transmission shaft cannot be affected. The device has the advantages of small construction work amount, reliable transmission connection and large output torque.

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.

A marine motor drive comprises an even number (2N) of direct current (DC) electric axial flux motors. The 2N DC axial flux motors are connected along a common input axis to a gearbox. A drive shaft is connected from the gearbox along a drive shaft axis to a propeller. The drive shaft is perpendicular to the common input axis. An adjustment means enables repositioning the output drive shaft for alignment with an existing vessel propellor drive shaft. Ideally electric motors are located on opposite sides of the gearbox and a pump delivers coolant to each electric motor in a closed cycle.

The invention relates to a system for intuitively steering an inflatable stand-up paddle board, comprising a retrofittable rudder device (10) for an underwater drive (12) and a control device (210) which can be coupled to the rudder device. The rudder device (10) comprises a mount (14) which can be engaged with the receptacle (110) and a tiller shaft (22) which comprises an upper limb (24), a connecting limb (26) and a lower limb (28). The rudder device (10) is characterized by a connecting element (16) which is rotatable about an axis of rotation (17) and comprises a first portion (18) and a second portion (20). The first portion (18) is rotatably mounted in the mount (14) and the second portion (20) can be rotationally fixedly connected to a component for controlling the direction of the board (100). The upper limb (24) of the tiller shaft (22) comprises a first end region (22.1) which is connected to the connecting element (16), wherein the lower limb (28) comprises a second end region (22.2) which is connected to a control unit (30). The connecting limb (26) connects the first end region (22.1) and the second end region (22.2) to one another such that, when the tiller shaft (22) is deflected, a steering motion is transmitted via the connecting element (18) to the components for controlling the direction of the board (100).

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 utility model discloses a sealing structure of a tail shaft of a maritime work ship, which relates to the technical field of tail shafts of maritime work ships, is suitable for sealing the tail shaft of the maritime work ship, and comprises a connecting valve I, the sealing unit is arranged on one side of the first connecting valve; the lubricating unit is arranged on the other side of the sealing unit and is used for lubricating; the sealing column is arranged on the other side of the lubricating unit and used for connection, the sealing unit comprises a connecting assembly and a maintenance assembly arranged on the outer surface of the connecting assembly, and the lubricating unit comprises a lubricating assembly arranged in the sealing unit and an oil injection assembly arranged on the outer surface of the lubricating assembly. Internal elements of the sealing structure can be conveniently replaced through mutual cooperation of the connecting pipe, the first fixing ring, the connecting ring and the maintenance assembly, the interior of the ship stern shaft can be conveniently lubricated through mutual cooperation of the lubricating oil pipe, the oil injection pipe and the sealing plug, and then the practicability of the sealing structure is improved.

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.