321results 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.

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 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.

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 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.

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 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.

The present application relates to a kind of support structures for rim propeller, flange plate is used as the force element of support structure for rim propeller, the outer side ring of flange plate and flange hole are directly connected with the motor shell of rim propeller, for transmitting the thrust load on the support structure for rim propeller to motor shell;Radial bearing sliding assembly and top wheel sliding assembly are connected on the flange plate by multiple sets of limiting blocks, thrust pad is installed on the inner side ring of flange plate, to provide axial support for rim propeller.The present application can provide radial, axial and starting auxiliary support for rim propeller, overall installation is convenient, can effectively avoid the problem of difficult starting of rim propeller;According to the wear condition of tile, the clearance between friction pair can be compensated in real time, so that the lubrication clearance is kept in a reasonable range, to ensure the stability of lubrication performance, without entering the dock to disassemble whole machine for replacement, in addition, the compensation method can maximize the use of tile, without causing material waste, reduce maintenance and use cost.

To provide a hull direct connection type propulsion device for a reciprocal rotation propeller greatly improving propulsion efficiency of an electric propulsion vessel by being composed so that the reciprocal rotation propeller loaded on the electric propulsion vessel is directly coupled to a hull, and a manufacturing method of the same.SOLUTION: A hull direct coupling propulsion device includes: a relative rotation propeller composed of a front propeller and a rear propeller; a double rotor electric motor generating respective rotational directions in a front propeller and a rear propeller; and a double shaft coupling the relative rotation propeller and the double rotor electric motor.SELECTED DRAWING: Figure 1

A marine drive assembly has a housing extending along a central axis and defining a gearbox section and a driveshaft section. A bevel gear assembly is housed in the gearbox section and has a first bevel gear rotatable about a central axis, a second bevel gear rotatable about the central axis, and a third bevel gear rotatable about a radial axis and operatively engaging the first bevel gear and the second bevel gear. A mounting flange is connected to and extends around at least part of the gearbox section. An inner shaft extends along the central axis and is operably connected to the first bevel gear for rotation in a first rotational direction about the central axis. An outer shaft is coaxially arranged with the inner shaft and operably connected to the second bevel gear for rotation in an opposite second rotational direction about the central axis.

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.

A control unit (230, 700) for monitoring a multi-propeller drive unit (110, 200, 300) of a marine vessel (100), the drive unit (110, 200, 300) comprising a first propeller (210), a second propeller (220) and a drive shaft (310) arranged to be driven by a motor (320, 330), where the drive shaft (310) is arranged to drive the first propeller (210) and the second propeller (220) via a differential gear arrangement (370),where the control unit (230, 700) is arranged to obtain data indicative of a rotation speed of the first propeller (ωp1) and of a rotation speed of the second propeller (ωp2),where the control unit (230, 700) is arranged to obtain data indicative of a torque (M) applied to the drive shaft (310) by the motor (320, 330) and to determine respective propeller accelerations (αp1, αp2) in response to the torque (M) based on the rotation speeds (ωp1, ωp2),where the control unit (230, 700) is arranged to determine a difference between the determined propeller accelerations (αp1, αp2) and expected propeller accelerations in response to the torque (M), and to detect anomaly in the multi-propeller drive unit (110, 200, 300) in case the difference does not meet an acceptance criterion.

A shaft seal includes a shaft engaging portion configured to couple to a shaft extending through a wall. The shaft seal includes a flange configured to sealingly engage the wall. The shaft seal includes a body extending between the shaft engaging portion and the flange. The seal is configured to allow radial and axial movement of the shaft relative to the wall while maintaining a seal between the flange and the wall.

The invention relates to a transmission and a power system.The transmission comprises a first input shaft, a second input shaft, a transmission structure and a clutch, the first input shaft and the second input shaft are both used for transmitting power for rotation, and the transmission structure is used for enabling the first input shaft and the second input shaft to form transmission connection; the transmission structure is located between the first input shaft and the second input shaft, and when the clutch enables the first input shaft to be connected with the transmission structure, the first input shaft is selectively in power coupling or power decoupling with the second input shaft. According to the technical scheme, the first input shaft and the second input shaft output power through the transmission structure in a transmission mode, power convergence is achieved through the transmission structure, and therefore the speed changer can achieve the charging effect while achieving the driving effect, and the space occupied by the speed changer can be reduced.

The purpose of the present disclosure is to provide a hull-directed propulsion system of a contra-rotating propeller and a method for manufacturing the same, in which the contra-rotating propulsion unit mounted on an electric propulsion vessel is directly connected to the hull, thereby significantly improving the propulsion efficiency of the electric propulsion vessel. In order to achieve the purpose, the present disclosure provides a hull-directed propulsion system of a contra-rotating propulsion unit, comprising: a contra-rotating propulsion unit including a front propeller and a rear propeller; a dual-rotor electric motor configured to generate rotational directions of the front propeller and the rear propeller, respectively; and a dual shaft connecting the contra-rotating propulsion unit and the dual-rotor electric motor.

The technical scheme of the invention discloses a compact comprehensive electric power system suitable for a high-speed working boat, which is characterized in that a direct current networking scheme is adopted, main loads are all mounted on a direct current busbar, and three layers of voltage levels are set for loads with different power levels, namely direct current (DC) 440V, direct current (DC) 24V and alternating current (AC) 220V; comprising a 1 # rectification generator set, a 2 # rectification generator set, a main distribution board, a charging and discharging board, a larboard propulsion inverter, a starboard propulsion inverter, a larboard propulsion motor and a starboard propulsion motor. The invention provides a technical scheme of a compact integrated power system suitable for a high-speed working boat, which is beneficial for solving the problem that an existing ship power system technical system is lack of integrated power technical design of a small ship in a compact space.

The disclosure concerns a method and marine vessel (1) with a reciprocating propulsion arrangement (10), comprising a pressurised air chamber (11) arranged along a lower surface (12) of the vessel's hull (13), the lower surface (12) comprising an opening (14) extending in an elongated form in a transverse direction across the hull (13); a foil module (16) comprising a foil (161) arranged outside the lower surface (12); a shaft assembly (162) extending from the foil (161) and towards an upper end of the chamber (11); and a foil motor (163) connected to the shaft assembly (162) towards the upper end of the pressurised air chamber (11), a displacement mechanism (17) arranged to linearly displace the foil module (16) along the length of the opening (14), and a sliding water seal (15) covering the opening (14) and configured to allow linear displacement of the foil module (16).

The present invention relates to the field of ship engineering technology and discloses an underwater inboard engine assembly and a method for processing an underwater housing cover thereof, comprising an underwater housing, a drive shaft assembly disposed inside the underwater housing, and a propeller assembly disposed on one side of the underwater housing; the drive shaft assembly comprising a drive shaft, a nylon bushing sleeved on the bottom surface of the drive shaft, a needle bearing sleeved on the bottom surface of the drive shaft, a drive gear sleeved on the bottom surface of the drive shaft, a drive shaft nut threadedly connected to the bottom of the drive shaft, and a positive gear engaged on the left end of the drive gear. The method for processing an underwater inboard engine assembly and an underwater housing cover device thereof, by changing the processing technology to a one-cut processing, relatively increases the service life of the underwater housing cover, reduces the eccentric wear of the propeller shaft, reduces propeller swing, reduces dynamic balance, reduces water resistance, and increases ship speed.

The invention discloses a double-flow gearbox and a steering method thereof, the double-flow gearbox comprises a driving transmission output mechanism and a steering power input mechanism, the driving transmission output mechanism comprises a power input shaft, a clutch, a power intermediate shaft, a walking 90-degree bevel gear set, a left walking differential mechanism, a right walking differential mechanism, a left walking power output shaft and a right walking power output shaft; the steering power input mechanism comprises a steering shaft, a right steering disc brake, a left steering disc brake, a left steering 90-degree bevel gear set, a right steering 90-degree bevel gear set, a left steering differential mechanism, a right steering differential mechanism, a steering power input gear, a left steering power distribution gear, a right steering power distribution gear and a steering forward and reverse rotation gear set. Walking and turning functions are achieved through the engine, double-flow turning is adopted, turning is achieved through the rotating speed difference of the two crawler belts, turning is flexible, abrasion of the crawler belts is small, turning energy loss is small, and the two crawler belts can be driven to rotate forwards and backwards to turn around in situ.

A computer implemented diagnostics system for a marine propeller drive unit is provided. The diagnostics system comprising processing circuitry connected to a speed sensor system and to a control unit associated with the electric machine. The speed sensor system is arranged in connection to the differential arrangement to provide propeller speed data to the processing circuitry indicative of a speed of rotation of at least one of the propeller axles of the self-balancing propeller drive unit. The control unit is arranged to provide motor current data to the processing circuitry indicative of a motor current drawn by the electric machine. The processing circuitry is arranged to monitor the motor current data from the control unit, and the propeller speed data from the speed sensor system, and to classify a state of the self-balancing propeller drive unit into a pre-determined number of states comprising one or more fault states, based on the motor current data and on the propeller speed data. The processing circuitry is arranged to trigger an action by the diagnostics system in case the state of the self-balancing propeller drive unit is classified as a fault state.