139results about "Water acting propulsive elements" patented technology

An outboard motor 10 includes a drive shaft 33, a propeller shaft 35, a worm wheel 66, and a worm 67. The drive shaft is connected to a drive motor 37 via a reduction unit 38. The propeller shaft is connected via a bevel gear unit to intersect the drive shaft. The worm wheel is disposed coaxially with the drive shaft and rotates to turn the propeller shaft around the drive shaft. The worm engages with the worm wheel and is connected to a steering motor. The worm has a torque receiving portion.

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 engine includes a steering mechanism having a pod propulsion device disposed in water outside a hull; a propulsive drive mechanism that is disposed in the hull and gives a propulsive drive force to the pod propulsion device; and a circulation cooling circuit which has an outward flow path that supplies a cooling oil to the steering mechanism and the propulsive drive mechanism, and an inward flow path which recovers the cooling oil from the steering mechanism and the propulsive drive mechanism, in which the inward flow path and the outward flow path of the circulation cooling circuit communicate with each other inside a case body of the pod propulsion device.

A transducer mounting assembly includes a trolling motor including a shaft mounting a propulsion unit, and a transducer mount mounting a transducer on the trolling motor. The propulsion unit is oriented by rotation of the shaft, and the transducer mount is actuatable to orient the transducer independent of rotation of the shaft.

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.

A pedal assembly and steering assembly are disclosed for converting an inflatable, drop stitch paddle watercraft into a pedal watercraft. The pedal assembly includes a mounting plate and mounting bracket for supporting a geared drive shaft in an opening extending through the floor of the watercraft. The steering assembly includes a rudder connected to a tiller through push pull cables.

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.

An outboard motor 10 includes a first drive shaft 26, a second drive shaft 27, and a decelerator 28. The first drive shaft 26 outputs a torque from a drive motor 25. The second drive shaft 27 is disposed parallel to the first drive shaft 26 and transmits the torque to a propeller shaft 31 to which a propeller 32 is connected. The decelerator 28 is disposed between the first drive shaft 26 and the second drive shaft 27 and transmits the torque from the first drive shaft 26 to the second drive shaft 27. The drive motor 25 is disposed below the decelerator 28.

The invention discloses a bionic jellyfish and a use method thereof. Comprising a sealed cabin, an electric control unit and a floating assembly which are arranged in the sealed cabin, swinging elastic pieces circumferentially arranged on the side portion of the sealed cabin, a middle shaft assembly arranged on the lower end face of the sealed cabin, a plurality of Y-shaped connecting rods in one-to-one correspondence with the swinging elastic pieces, and a plurality of memory alloy elastic pieces in one-to-one correspondence with the Y-shaped connecting rods. The memory alloy elastic piece is used for driving the Y-shaped connecting rod to open and close so as to change the radial distance between the swing elastic piece and the center shaft assembly, and the memory alloy elastic piece is electrically connected with the electric control unit. The bionic jellyfish has the advantages that through cooperation of the Y-shaped connecting rod and the memory alloy elastic piece, rapid swinging of the swinging elastic piece can be achieved, the moving stability and the moving speed of the bionic jellyfish in water are improved, and the whole bionic jellyfish is simple and compact in structure and low in cost.

An improved outboard and steering control system that includes a removable lower drive unit with the ability to rotate 360 degrees or more. The embodiments shown herein are also design for electric outboard marine motors with cooling systems connected between the lower drive unit and the upper housing unit. This system allows the ability to configure an upper drive unit with multiple different variations of a lower drive unit and improve the ability to maneuver vessels with the increased 360-degree directional range.

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.

A marine engine assembly has a housing; an internal combustion engine having a crankshaft; and a driveshaft assembly driven by the crankshaft. The driveshaft assembly has: a first driveshaft having a first end operatively connected to the crankshaft; a second driveshaft having a first end connected to a second end of the first driveshaft, the first end of the second driveshaft being rotationally fixed relative to the second end of the first driveshaft, the first and second driveshafts being concentric, one of the first and second driveshafts being disposed at least in part inside another one of the first and second driveshafts, the second driveshaft extending from its first end toward the first end of the first driveshaft; and a third driveshaft having a first operatively connected to the second driveshaft. The marine engine assembly also has a propulsion device operatively connected to a second end of the third driveshaft.

The present application provides a stern structure and a ship, comprising a stern shaft, a water inlet, a first sealing part, a drain and a control part. The water inlet is arranged at one end of the cabin of the stern, and seawater flows in through the water inlet. The first sealing part is arranged at the water inlet, connected between the stern shaft and the hull structure, and the opening and closing of the water inlet is controlled by controlling the opening and closing of the first sealing part. The drain is arranged at the bottom of the other end of the cabin of the stern, and a water pump is arranged at the drain, and the water pump is used to discharge the seawater in the cabin. The control part is respectively connected to the first sealing part and the water pump for communication, and the control part controls the opening and closing of the water inlet and the water pump. The present application effectively solves the problem that the bearings in the stern cabin are difficult to inspect and replace when the ship is sailing, and can provide support and lubrication for the stern shaft, and can facilitate the inspection and maintenance of the stern cabin. The stern structure of the present invention is simple, the bearing is easy to install and use, the use process is safe and reliable, the equipment installation efficiency is improved, the on-site construction risk is effectively reduced, and it is conducive to popularization and use.

An axial flux propulsion system for an electric boat that includes interconnecting subsystems including a mounting system, a traction system, a transmission system, an electrical power distribution system, a control system, and a fluid management system, among other boat systems. The traction system typically is an axial flux motor / generator. Various embodiment of the axial flux propulsion system may include a stern drive embodiment and a jet drive embodiment. Portions of the axial flux propulsion system may be both inboard and outboard. A control system may control the operation of the various boat systems including the axial flux motor / generator, and as a result, control the overall operation of the boat.

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 invention relates to the technical field of underwater vehicles, and discloses an underwater vehicle middle optical fiber outlet mechanism which comprises an underwater vehicle body, a flow guide cover is arranged at the tail end of the underwater vehicle body, a power motor is installed in the middle of the underwater vehicle body, a transmission shaft is arranged in the middle of the power motor, and a propeller is installed at the tail end of the transmission shaft. The device further comprises fixed bearings installed at the two ends of the transmission shaft, a protection tube is installed in the middle of the fixed bearings, an optical fiber body is installed in the middle of the protection tube, the protection tube penetrates through the transmission shaft along the central axis, and fixing frames are installed at the two ends of the protection tube respectively. The two fixing frames are fixed to the power motor shell and the flow guide cover respectively. According to the underwater vehicle, through the arrangement of penetrating the center of the tail end, the possibility that the underwater vehicle is wound by aquatic plants is greatly reduced, and the safety of the underwater vehicle is improved; and through the design of the shaft in the shaft and the internal invisible installation, the appearance is kept tidy, the streamline appearance of the underwater vehicle is ensured, and the advancing accuracy is improved.

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 invention discloses a ship propeller shafting device with a circular magnetorheological damper. The propeller vibration absorption device is mainly suitable for propeller vibration absorption, and the influence of exciting force generated by a propeller on a hull and equipment thereof is reduced. When the magnetorheological damper works, the magnetorheological fluid in the damping channel generates a magnetorheological effect, shear stress is increased, when exciting force is transmitted to the annular piston rod of the magnetorheological damper along the stern shaft, the annular piston rod begins to displace and drives the annular piston to displace, due to the fact that the shear stress is increased, large damping force is generated, and the damping effect is improved. The annular piston rod and the annular piston are prevented from moving, and the vibration absorption effect is achieved. A piston of the magnetorheological damper is divided into two parts, namely an annular piston outer ring part and an annular piston inner ring part; two annular damping channels with different radiuses are respectively formed between the piston outer ring and the lower surface of the cylinder body outer ring and between the piston inner ring and the upper surface of the cylinder body inner ring; the adjustable range of the output damping force can be improved through the two magnetic fields which operate independently.

Axial Flux Outboard Propulsion System for an Electric Boat having a first axial flux motor that is positioned adjacent to a second axial flux motor and the ability to selectively turn each motor on or off via the control system based on the request or need for torque.