388results about "Propulsive transmission" patented technology

The present invention discloses a pectoral fin steering bionic fish driven by a dual-half-gear mechanism. The head of the fish comprises an outer shell formed by two interlocking shells, which is an asymmetrical structure with a waterproof cavity formed inside. Pectoral fins are arranged on either side of the outer shell, and a pectoral fin control mechanism for controlling the rotation of the pectoral fins is located within the waterproof cavity. The tail is formed by assembling a multi-section skeleton. A dual-half-gear tail swing mechanism for controlling the swing of the tail fin is located within the skeleton. The skeleton is covered with waterproof fish skin. The dual-half-gear tail swing mechanism includes a main shaft, two spaced-apart half-gears connected to the main shaft, and a rocker arm. The rocker arm has a mating gear, which is connected to a sleeve arm that is inserted into the rocker arm to form a linear bearing structure. The sleeve arm extends rearwardly through a pin to connect to the skeleton. The dual-half-gear mechanism and the linear bearing structure transmit swinging power to control the swing of the fish tail. The present invention utilizes a dual-half-gear tail swing mechanism to control tail swinging, resulting in high mechanical transmission efficiency, high control accuracy, and the ability to perform relatively complex motions.

A marine drive is for propelling a marine vessel. The marine drive has a propulsor configured to generate a thrust force in a body of water; a battery that powers the propulsor; and a supporting frame which supports the marine drive relative to marine vessel. The supporting frame has a monolithic body defining a frame interior, and further has a support leg extending downwardly from the monolithic body and a steering arm extending forwardly from monolithic body. A cowling is fixed to the supporting frame via at least one hidden fastener that extends from the frame interior, through the supporting frame, and into engagement with the cowl body, wherein hidden fastener being accessible during installation.

The invention relates to the technical field of underwater propulsion, and discloses an intelligent control method and system for an underwater magnetic coupling propeller. The method comprises the following steps: detecting a magnetic field of a magnetic coupling unit through a Hall sensor array to obtain magnetic flux density distribution data; permanent magnet array hysteresis characteristics are modeled according to the magnetic flux density distribution data, and hysteresis compensation parameters are obtained; inputting the hysteresis compensation parameter into a magnetic field genetic algorithm to optimize magnetic pole configuration to obtain an optimal magnetic pole phase difference; distributing a torque control instruction according to the optimal magnetic pole phase difference to obtain a target excitation current value; the magnetic field is adjusted through the hysteresis compensation PID controller, and magnetic coupling torque output is obtained. By establishing an intelligent control method of hysteresis characteristic accurate modeling, magnetic field genetic optimization and hysteresis compensation PID control, the control precision and transmission efficiency of the magnetic coupling propeller in a complex marine environment are improved.

A vessel hybrid combined cycle power and propulsion system includes a steam turbine, a gas turbine, an auxiliary generator, an electric propulsion drive system, and an energy storage system, each connected to an AC bus. The system further includes a source of steam for the steam turbine, a control system for controlling operation of the steam turbine, gas turbine, auxiliary generators, electric drive propulsion system and energy storage system. The primary source of steam for the steam turbine is exhaust gas from the gas turbine. The primary source of gas for the gas turbine is boil off gas from the cargo hold. The AC bus includes a plurality of sections of AC bus coupled together by bus ties closed in normal operation forming a closed ring AC bus. The electric propulsion drive system includes a variable speed drive, driving an electric motor coupled through a drive shaft to a propeller.

This present invention relates to an electric fin and a water sports instrument, wherein the electric fin comprises a housing extending along a first direction and having a water inlet cavity; and a propeller and a guide member sequentially arranged in the first direction, wherein the propeller is located in the water inlet cavity, at least part of the guide member is located in the water inlet cavity, the water flow in the water inlet cavity flows out of the guide member; the propeller is provided with a propeller shaft and a plurality of blades, the propeller shaft extends in the first direction, and the plurality of blades are spaced around a circumference of the propeller shaft; the guide member is provided with a guide shaft and a plurality of flow deflectors, the guide shaft extends in the first direction and the plurality of flow deflectors are spaced around a circumference of the guide shaft; the propeller shaft and the guide shaft having an outer contour S with a taper which gradually decreases along a second direction from said second end portion of the propeller shaft toward said flow guide. The electric fin of the present invention has sufficient power and good guiding performance.

A marine drive is for propelling a marine vessel in a body of water. The marine drive comprises a motor housing defining a motor cavity; a motor disposed in the motor cavity; a propulsor shaft extending from the motor housing, wherein the motor is configured to cause rotation of the propulsor shaft; a propulsor which is rotated by the propulsor shaft to create a thrust force in the body of water; and a vent conduit having a first end connected to the motor cavity and a second end which vents the motor cavity to atmosphere.

The invention discloses a ship side thruster and an installation method thereof.The ship side thruster comprises a side thruster body which comprises a barrel, a rotating rod is rotatably arranged in the barrel, propeller blades are arranged at one end of the rotating rod, the other end of the rotating rod is connected with a first gearbox, and one side of the first gearbox is connected with a first input shaft; the base is used for being connected to a ship and provided with a diesel engine, the output end of the diesel engine is connected with a second gearbox, the output end of the second gearbox is connected with a universal shaft, and one end of the universal shaft is connected with the first input shaft; the two guide pipes are arranged on the side pushing main body, the two ends of the cylinder body are welded with the corresponding guide pipes into a whole, and connecting ribs are arranged on the periphery of the cylinder body. According to the ship side thruster of the structure, deformation of cylinder welding is reduced through the connecting ribs, power is transmitted to the first input shaft through the diesel engine, the second gearbox and the cardan shaft, independent operation of a ship power grid is not depended on, and therefore the ship side thruster deals with the complex ship use environment.

The invention discloses a parallel hybrid power ship transient control system which comprises a propeller and a gear box, the gear box is composed of a clutch a, a clutch b and a gear, the clutch a is sequentially connected with an engine and a CAN bus, and the clutch b is sequentially connected with a torque sensor, a shaft tachometer, a reversible motor, an AC / DC device, a storage battery pack and the CAN bus. The system further comprises a cRIO controller with an acquisition card and an upper computer, wherein the cRIO controller is connected with the CAN bus. The invention further discloses a control method. The optimal reversible motor torque and clutch combination pressure are switched in the switching process of different working modes, so that engine speed fluctuation in the switching process of a ship can be reduced, and the working condition of a transmission system can be improved.

The invention discloses a stern shaft sealing device for a ship, and relates to the technical field of ship equipment. The device comprises a tail shaft barrel, a tail shaft, a sediment intercepting assembly, a first sealing unit and a pipeline system. And a sealing structure is arranged in a gap between the stern shaft and the stern shaft barrel. The first sealing unit comprises four sealing leather cups which are arranged in the axial direction and divide the interval into a first installation cavity, a gas cavity, a second installation cavity and a cooling liquid cavity, and the pipeline system is communicated with the gas cavity and the cooling liquid cavity so as to maintain pressure. The core is a buffer structure in the first mounting cavity and the second mounting cavity, and the buffer structure comprises a sealing ferrule, an adjusting assembly and an abutting assembly. When the seawater pressure suddenly increases, the buffer structure converts impact kinetic energy into elastic potential energy and gas compression potential energy through elastic deformation, pressure conduction and the like, pressure buffering is achieved, meanwhile, the sealing performance is dynamically enhanced, seawater backflow is prevented, the ship navigation safety is guaranteed, and the reliability and stability of the sealing device are improved.

The utility model provides a magnetic suspension type ship motor-driven propeller which comprises a rotor, a stator and a flow guide mechanism. The stator comprises a machine shell, a coil fixing frame, a winding coil, a first fixing ring and a first annular magnet. The rotor comprises a magnet fixing frame arranged on the inner side of the coil fixing frame, a rotor magnet arranged on the magnet fixing frame, a propeller fixedly connected to the inner side of the magnet fixing frame, a second fixing ring fixedly connected to one end of the magnet fixing frame and a second annular magnet fixedly connected to the second fixing ring. The first annular magnet and the second annular magnet are opposite in homopolar mode, and the outer wall of the rotor and the inner wall of the stator are both covered with polytetrafluoroethylene films. The flow guide mechanism comprises a water outlet cover fixedly connected to one end of the outlet of the machine shell and a flow guide pipeline fixedly connected to the inner wall of the water outlet cover, flow guide plates are evenly distributed in the flow guide pipeline in the radial direction, the service life can be prolonged, working benefits are improved, and noise is reduced.

An alternating current (AC) propulsion system for a boat. The AC propulsion system includes a trolling motor operably mountable to the boat and an AC power system. The trolling motor has a head and a motor housing secured at upper and lower ends, respectively, to an elongated shaft. An AC motor is disposed in the motor housing and drives a propeller. The AC power system includes a generator and a variable frequency drive (VFD). The VFD includes a VFD AC input and a VFD AC output. The VFD AC input is electrically coupled to an AC output of the generator. The VFD AC output is operably electrically coupled to the AC motor of the trolling motor. In some embodiments a second trolling motor with an AC motor may be electrically coupled to a second VFD AC output of the VFD.

A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

A marine drive is for propelling a marine vessel. The marine drive has a propulsor configured to generate a thrust force in a body of water, an electric motor that powers the propulsor, a battery having a battery port for outputting battery power, a supporting frame that supports the marine drive relative to marine vessel, the supporting frame having a frame interior that retains the battery, and a motor port in the frame interior, wherein inserting the battery into the frame interior engages the battery port with the motor port so that the battery provides electric power to the electric motor. A removable cover is provided on the motor port.

An electric direct-drive motor for an underwater vehicle comprises a fully-encapsulated stator and a rotor. The fully-encapsulated stator may comprise a stator encapsulated in a thermally-conductive and electrically-isolative encapsulant. The encapsulant may be configured to align the rotor within the fully-encapsulated stator. The fully-encapsulated stator may have an internal surface to operate as a bearing surface for the rotor. A radial gap between the rotor and the internal surface may provide a fluid bearing between the rotor and stator. The internal surface of the fully-encapsulated stator operates as a bearing surface for the rotor and the radial gap provides a fluid bearing when operating in a flooded assembly. This allows the electric direct-drive motor to be directly exposed to seawater and the high external water pressure eliminating any need for a pressure compensated housing and dynamic seals and bearings.

The invention discloses a self-deviation-rectifying propelling system which comprises a mounting part connected with a carrier platform of underwater monitoring equipment, an inner propeller assembly arranged at the tail end of the mounting part and an outer propeller assembly arranged at the tail end of the mounting part. The inner propeller assembly comprises a propeller column rotationally connected with the mounting part and a plurality of inner blades which are arranged on the propeller column and are distributed in the circumferential direction; the outer propeller assembly comprises an isolation flow guide cover rotationally connected with the mounting part and a plurality of outer blades which are arranged on the outer wall of the isolation flow guide cover and are distributed in the circumferential direction; the inner propeller assembly is arranged in the isolation flow guide cover, the inner propeller assembly and the outer propeller assembly are coaxially distributed, the rotation state of the propeller column and the rotation state of the isolation flow guide cover are synchronous and reverse, and the inclination directions of the inner blades and the outer blades are opposite. According to the invention, the propulsion direction deviation phenomenon of underwater monitoring equipment due to the reaction force of water flow can be avoided, and the accuracy of the propulsion direction is ensured. The invention further discloses underwater monitoring equipment, and the beneficial effects of the underwater monitoring equipment are as described above.

The present invention discloses an axial flux shaftless rim propeller, comprising a casing, a rotor and two annular stators, wherein the rotor is located inside the casing, the rotor and the casing are connected by a water-lubricated radial bearing, the two annular stators are arranged on both sides of the rotor, and water-lubricated thrust bearings are respectively arranged between the annular stators and the rotor. The shaftless rim propeller reduces the axial size and balances the axial magnetic pull. Compared with the radial flux shaftless rim propeller, it can provide a greater torque output under the same volume, and improves the output power of the motor. In addition, the shaftless motor structure reduces the axial size of the ship propeller, provides ample space for the arrangement of the thrust bearing, significantly reduces friction and wear, reduces noise, effectively improves the performance of the motor, prolongs the life of the motor, and further improves the operating stability and efficiency of the motor.

The present disclosure introduces the concept of multiple electric motors connected in parallel on the same shaft to replace the large engines in marine vessels. Each electric motor has a clutch to engage / disengage the motor from the main propulsion shaft that drives the propellers. By that, the electric motors can run on their optimum points, and when the vessels need to increase their speed, another electric motor can engage to compensated for the needed power so that the electric motors run in a high efficiency in different speeds as well as the high efficiency of the electric motors compared to internal combustion engines. The modular electric motors reduce the installation cost, maintenance cost, and emissions, as well as the risk of vessels stopping due to engine failure.

The invention relates to the technical field of underwater power equipment, in particular to an obliquely and symmetrically distributed underwater propeller which adopts a group of driving assemblies which are obliquely and symmetrically arranged based on the center line of a shell, and the horizontal deflection angles of the two driving assemblies are 8.5 degrees. Comprising a driving motor, a bearing, a bearing oil seal, a bearing seat, a rotating shaft, a rotating shaft oil seal, a gasket and propeller blades, when the water flow is disordered and a leftward or rightward water flow impact resultant force exists in a horizontal plane determined by a connecting line of the driving motors and the propeller blades, a resultant force which is equal to the current water flow impact resultant force in magnitude and opposite to the current water flow impact resultant force in direction is generated in the plane by changing the differential speed of the two driving motors; and the interference of the water flow impact resultant force on the underwater propeller is counteracted. According to the underwater propeller, the static and dynamic underwater stability of the underwater vehicle can be greatly improved, the good anti-interference capability is achieved, meanwhile, the structural arrangement is compact, and the size of the underwater vehicle can be greatly reduced.

The disclosure provides a pod propulsion system including first and second counter rotating propellers for providing thrust to propel a marine vessel. The pod propulsion system includes a first electric motor (i) for rotating the first propeller and (ii) electrically coupled to a first drive, the first drive being configured to control the first motor and a second electric motor (i) for rotating the second propeller and (ii) electrically coupled to a second drive, the second drive being configured to control the second motor. The first and second drives respectively control the first and second motors interdependently.

The purpose of the present invention is to provide a hull-direct-connection-type propulsion device of a contra-rotating propeller and a method for manufacturing the same, the propulsion efficiency of an electrically propelled ship being greatly improved by disposing the contra-rotating propeller attached to the electrically propelled ship so as to be directly connected to the hull. In order to achieve the purpose, the hull-direct-connection-type propulsion device of the contra-rotating thruster according to the present invention comprises: a contra-rotating thruster comprising a front propeller and a rear propeller; a dual-rotor motor for generating respective rotation directions of the front propeller and the rear propeller; and the double shafts are used for connecting the contra-rotating thruster and the double-rotor motor.

A marine propeller propulsion unit has a double-pinion planetary gear for driving a front and a rear propeller by means of an input shaft. A sun gear is adapted to be connected to the input shaft, a ring gear is adapted to be connected to the front propeller, and a planet carrier is adapted to be connected to the rear propeller.

To provide a power transmission device with improved reliability as well as improved engine fuel consumption, and a vehicle engine system.SOLUTION: A power transmission device composed to transmit power of an engine installed on a vehicle travelling at least on water or underwater to a propeller of the vehicle includes: an input shaft composed to input power from the engine; an output shaft composed to output power to the propeller; and a magnetic gear rotary mechanism magnetically coupling the input shaft and the output shaft. The magnetic gear rotary machine includes: a magnetic rotor coupled to the input shaft; a magnetic pole piece rotor coupled to the output shaft; a stator core extending in the peripheral direction outside in the radial direction of the magnet pole piece rotor; and a stator having a stator coil installed in the stator core.SELECTED DRAWING: Figure 1

The utility model relates to a non-contact connection propeller transmission structure of a marine in-cabin machine. The non-contact connection propeller transmission structure comprises a ship body and a power assembly, the ship body is provided with a fixing groove communicated with the outside, a fixing pipe is arranged in the fixing groove, a propeller for bearing power output is arranged in the fixing pipe, a sealing part used for sealing communication between the ship body and the outside is arranged in the fixing pipe, and a sealing gasket is arranged outside the fixing pipe and at least used for filling a gap between the fixing pipe and the fixing groove. One purpose of the utility model is to improve the waterproof performance of the motor so as to prolong the service life of the motor.

The present disclosure relates to a marine propulsion unit, comprising at least one motor for rotating a pitchable propeller around an axis, the pitchable propeller being connected with a first shaft and a second shaft, the first shaft being rotated by a first power way and the second shaft being rotated by a second power way, wherein the first power way and the second power way are controllable independently of each other so that a first rotation speed (rpm) of the first shaft and a second rotation speed (rpm) of the second shaft can vary in relation to each other, wherein a coupling is arranged between the first shaft, the second shaft and the pitchable propeller for changing a pitch angle of the pitchable propeller when the first rotation speed and / or second rotation speed vary in relation to the other.

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 application provides a coaxial double-rotor thrust system based on a magnetic gear, comprising: a power source comprising a power input shaft; a magnetic gear comprising an inner ring, an outer ring and a modulation ring arranged between the inner ring and the outer ring; wherein the power input shaft is connected with the inner ring; an inner thrust output shaft, one end of the inner thrust output shaft being connected with the modulation ring, the other end of the inner thrust output shaft being provided with a rotor or a propeller; an outer thrust output shaft, one end of the outer thrust output shaft being connected with the outer ring, the other end of the outer thrust output shaft being provided with a rotor or a propeller; wherein the rotation direction of the outer ring is opposite to that of the modulation ring; the coaxial double-rotor thrust system based on the magnetic gear can realize co-axial forward and reverse rotation of the rotor / propeller and has a certain reducer function, so that the transmission and power structure are greatly simplified.

The invention discloses an air sealing system for a ship stern shaft sealing device, which relates to the technical field of ship stern shaft sealing and comprises a shaft tube body, a sealing structure is mounted at the end of the shaft tube body, an inlet pressure sensor is mounted at the air inlet end of the sealing structure, and a control mechanism is mounted on the inlet pressure sensor through a pipeline. A front oil tank mechanism is installed at the tail end of the shaft tube body, and the control mechanism comprises a control frame, an air control unit, a discharging and collecting unit, a lubricating oil control unit, a pump body and a master controller. Through the arrangement mode that the sealing mechanism and the control mechanism are matched, the pressure of each cavity is dynamically adjusted in a stepped mode according to the ship draft depth and the working condition, a reliable pressure gradient barrier is constructed, seawater invasion and lubricating oil leakage are effectively prevented, the sealing rings and the shaft necks are in a non-contact or micro-contact state, and the service life of the sealing rings and the shaft necks is prolonged. Therefore, mechanical friction and abrasion are reduced fundamentally, and the service life of the sealing ring is prolonged.

A grounding brush assembly includes a drive shaft seal mount configured to be coupled to a drive shaft seal assembly for a boat. A housing is coupled to the drive shaft seal mount. The housing includes an aperture at a bottom surface of the housing and a slot extending at least partially along a front surface of the housing. A conductive brush is positioned within the housing and extends at least partially through the aperture in the housing. A conductive contact is electrically connected to the conductive brush and extends through the slot in the housing. A biasing element is coupled to the housing and biasing the conductive brush away from a top surface of the housing.

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.

Techniques for controlling operation of a sailing vessel, related to harvesting regenerative braking power, are provided. A control system, configured to control operation of a regenerative braking system of the vessel, receives measurements acquired by a wind sensor coupled to the vessel, to determine a current angle of an apparent wind relative to the vessel; determines a current speed of the vessel; determines, based on the current angle of the apparent wind relative to the vessel and the current speed of the vessel, an amount of regenerative braking power to be applied by a regenerative braking system to an electric propulsion system of the vessel; and automatically controls the regenerative braking system to apply the determined amount of regenerative braking power to the electric propulsion system. The regenerative braking system may be calibrated based on user input.