488results about "Transmission with propulsive element synchronisation" patented technology

The invention discloses a magnetic adjustment water lubricated bearing and a bearing support control method, which are applied to a large ship propulsion shaft system, and comprise a bearing shell, an electromagnetic excitation module, a batten, a sensor module, a power supply driving module and a control system, a plurality of mounting grooves are formed in the bearing shell; an electromagnetic excitation module is arranged in each mounting groove and generates a variable magnetic field with set intensity; a plurality of magnetically soft alloy segments are arranged on the batten, the magnetically soft alloy segments correspond to the electromagnetic excitation modules one to one, and a magnetic field acts on the magnetically soft alloy segments to generate electromagnetic attraction force; the control system independently controls the excitation current of each electromagnetic excitation module according to data of the sensor module, and generates magnetic fields with different intensities to act on soft magnetic alloy areas at corresponding positions, so that precise control of local supporting rigidity and lubricating gaps of the water-lubricated bearing is realized, unbalance loading and abnormal wear risks are effectively reduced, and the service life of the water-lubricated bearing is prolonged. And the adaptive capacity of the bearing under low-speed heavy load and dynamic disturbance is improved.

The invention provides a ship lock shaft device which comprises a brake disc, a lock shaft device body, at least one lock shaft key and a driving component, a plurality of lock shaft key grooves are formed in the circumferential direction of the brake disc, the lock shaft device body is located on the side portion of the brake disc, and the lock shaft keys are installed on the side wall, facing the brake disc, of the lock shaft device body. The driving part is connected with one end part of the lock shaft key; the driving part drives the lock shaft key to extend outwards along the lock shaft device body and to be inserted into the lock shaft key groove in the corresponding position to lock the brake disc; or the driving part drives the lock shaft key to retract into the lock shaft device body and to be separated from the lock shaft key groove in the corresponding position, and the brake disc is unlocked. According to the ship lock shaft device, the operation mode and the maintenance mode of an existing ship lock shaft device are optimized; during operation, an operator does not need to go below a shaft system and can complete shaft locking and unlocking actions only by standing beside the shaft locking device base, and maintenance is very convenient.

The invention relates to a repeatedly detachable magnetic composite water lubricated bearing and a maintenance method thereof.The water lubricated bearing comprises a cylindrical bearing seat surrounding a ship stern shaft and a permanent magnet assembly detachably connected with the bearing seat, a cylindrical sliding bearing is arranged on the inner side of the bearing seat, a notch is formed in the outer side face of the sliding bearing, and the permanent magnet assembly is detachably connected with the bearing seat; the notch penetrates through the sliding bearing in the axis direction of the sliding bearing, a containing groove used for containing the permanent magnet assembly is defined between the notch and the inner side wall of the bearing seat, when the water lubrication bearing is arranged on the outer side of the ship tail shaft in a sleeving mode, the containing groove is located over the ship tail shaft, and the permanent magnet assembly is in sliding fit with the containing groove in the axis direction of the sliding bearing. According to the scheme, the permanent magnet is configured to be in a detachable form, and the permanent magnet can be conveniently maintained after being demagnetized, so that the maintenance cost of the water-lubricated bearing is reduced, and the load of the water-lubricated bearing can be reduced for a long time.

A hydrofoil vehicle comprises a frame and at least one foil. The vehicle comprises a moveable control surface configured to control a pitch of the vehicle, in use. A locking mechanism is provided for restricting movement of the control surface when the vehicle is not foiling, for example during launching. In examples, the locking mechanism activates automatically when the hydrofoil vehicle is not foiling. In examples, the vehicle is human powered.

The batten type water lubricated bearing comprises a shaft sleeve and a plurality of composite battens which are installed on the inner wall of the shaft sleeve at intervals in the circumferential direction of the shaft sleeve, and the composite battens comprise the first battens installed in a bearing area of the bearing and the second battens installed in a non-bearing area of the bearing. A through type variable cross-section groove is formed in the side, away from the ship stern shaft, of the first batten in the length direction of the first batten, and the cross-section area of the variable cross-section groove is gradually increased from the bow to the stern. The invention further discloses an assembly method of the batten type water lubricated bearing. The first batten is arranged in the bearing carrying area and provided with the variable cross-section groove, so that the rigidity of the first batten is gradually reduced in the direction from the bow to the stern, axial gradient rigidity distribution is formed, the low-rigidity area at the stern end can adapt to deformation of the stern shaft to be adjusted in a self-adaptive mode, local stress concentration is reduced, and the stability of the stern end is improved. And a high-rigidity area at the bow end maintains necessary bearing strength, so that the axial load of the bearing is homogenized as a whole.

The utility model discloses a gearbox for an oil-electricity double-engine ship. The gearbox comprises a box body, the diesel oil input component comprises a first input shaft, a first driving gear is sleeved on the first input shaft, and the first input shaft is provided with a first transmission gear and a first clutch; the reversing shaft part comprises a reversing shaft, a second driving gear is sleeved on the reversing shaft, the reversing shaft is provided with a second transmission gear and a second clutch, and the second transmission gear is meshed with the first transmission gear; the motor input component comprises a second input shaft, the second input shaft is sleeved with a third driving gear in an empty mode, the third driving gear is meshed with a first driven gear, the second driving gear is fixedly sleeved with the first driven gear, and the second input shaft is provided with a third clutch; the output shaft component comprises an output shaft and a second driven gear, and the second driven gear is meshed with the first driving gear and the second driving gear. According to the scheme, the diesel engine or the motor is independently used for driving, intelligent switching of the diesel engine and the motor can be achieved at any speed, oil consumption is reduced, and power performance is improved.

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 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 fishing net winding prevention structure of the ship propeller comprises a driving rod, a propeller base is fixedly installed on the left side of the driving rod, a stern shaft box is connected to the right side of the driving rod, and a first cutting mechanism is arranged in the stern shaft box. According to the fishing net winding preventing structure of the ship propeller, by arranging the first cutting mechanism, when a driving rod rotates autonomously, a driving gear fixedly installed on a rod body of the driving rod can drive two driven gears which are connected in a meshed mode to move, and the driven gears move to enable a first transmission rod to rotate; meanwhile, two first bearings connected with the outer wall of the first transmission rod can provide high stability for the rod, then the rod can stably rotate, and a plurality of first cutting blades installed on the rod wall can clean and smash fishing nets or weeds wound on the driving rod through stable rotation of the first transmission rod; therefore, the protection performance of the whole structure is improved, and the operation safety of the ship can be effectively guaranteed.

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

The utility model relates to a high linear speed sealing device which comprises an installation seat body, a spring assembly, a movable ring, a static ring seat and a static ring, the static ring and the movable ring form a sealing pair, a sealing ring is arranged between the static ring seat and the static ring, cooling water channels are respectively arranged on the installation seat body and the static ring seat, and the cooling water channel of the installation seat body is communicated with the cooling water channel on the static ring seat. The cooling water channel on the static ring seat is communicated with the working surfaces of the static ring and the moving ring sealing pair through the water channel of the static ring, so that cooling water can directly reach the working surfaces of the static ring and the moving ring sealing pair and take away friction heat of the sealing pair, and the cooling requirement of high friction heat of the sealing surface of the large-shaft-diameter high-linear-speed sealing device is met. And a displacement sensor and an infrared temperature sensor are arranged on the static ring seat, so that the requirements of sealing pair abrasion loss and sealing pair temperature real-time monitoring data required by fault pre-judgment and service life analysis of the sealing device are met.

The utility model relates to the technical field of sealing devices, and discloses a marine stern shaft sealing device capable of being automatically adjusted, which solves the problems that an existing sealing device cannot be automatically adjusted and compensated according to the axial movement of a stern shaft and is poor in sealing effect, and comprises a sealing end cover, a tail shaft body is rotationally installed in the sealing end cover, a first installation box is fixedly installed on the upper portion of one end of the sealing end cover, a second installation box is fixedly installed on the upper portion of the other end of the sealing end cover, a first disc is fixedly installed on the surface of one end of the tail shaft body, and a second disc is fixedly installed on the surface of the other end of the tail shaft body. A first ring groove is formed in one side of the interior of the sealing end cover, a first hollow sealing ring is fixedly mounted in the first ring groove, a second ring groove is formed in the other side of the interior of the sealing end cover, and a second hollow sealing ring is fixedly mounted in the second ring groove; the sealing device can automatically adjust and compensate the tail shaft according to the axial movement of the tail shaft, so that the sealing effect of the tail shaft is ensured.

The present disclosure relates to a vessel propelling mechanism. In one aspect, a vessel propelling system includes a motor and a waterjet system. The waterjet system is coupled to the motor and includes a stator with a plurality of blades. A first blade of the plurality of blades has a shape that is different than remaining blades of the plurality of blades, the shape of the first blade allowing a driving mechanism of the motor to be coupled to a shaft within the waterjet system.

The invention discloses a shaftless rim propeller with bearing and motor integrated driving steering. The shaftless rim propeller comprises a full-rotation device and a shaftless rim propelling unit. The full-rotation device comprises a main shell assembly and a full-rotation motor, the full-rotation motor is sleeved with the main shell assembly, the full-rotation motor comprises a water-lubricated bearing rotor and a first permanent magnet, and the first permanent magnet is embedded into the water-lubricated bearing rotor; the shaftless rim propelling unit comprises a propeller shell assembly, a spherical driving motor and blades, the propeller shell assembly is arranged on the outer side of the spherical driving motor in a sleeving mode and connected with the main shell assembly, and the spherical driving motor is in transmission connection with the blades. The structure of the full-rotation device is simplified, the structure is compact, a transmission mechanism is omitted, the full-rotation device is driven by the motor, and the full-rotation efficiency of the full-rotation device is improved. The three-degree-of-freedom rotation characteristic of the spherical motor is utilized, the propelling direction of propagation is adjusted in any direction, the propelling efficiency is improved, and the maneuverability of the ship under the non-design working condition is improved.

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 invention relates to a long and thin shafting oil lubrication stern shaft tube and a mounting method thereof, and relates to the field of stern shaft tube structural design, the long and thin shafting oil lubrication stern shaft tube comprises a first stern shaft tube, a middle tube is arranged at the bow end of the first stern shaft tube, the first stern shaft tube extends into the middle tube, the first stern shaft tube and the middle tube are coaxially arranged, and the first stern shaft tube and the middle tube are coaxially arranged. And the end part of the middle tube is fixedly connected with the side wall of the first stern shaft tube. The method has the advantages that the design problem of the stern shaft tubes at the two ends of the controllable-pitch propeller shafting with the thin and long oil lubrication bearings is solved, the safety of ship operation is ensured, construction and installation are convenient, and the construction and installation process meets the requirements of ship specifications.

The utility model relates to the technical field of ships, in particular to a cooling and lubricating water system for a ship tail shaft. The system comprises a machine belt water pump, a main machine cooling heat exchanger, a gearbox cooling heat exchanger, a tail shaft pipe, a cooling water main pipe, an emergency compensation water tank water inlet pipe, an emergency compensation water tank, an emergency compensation water pipe, a residue discharging valve, a flow adjusting valve, a fresh water cooling water pipeline and a fresh water cabinet, one end of the emergency compensation water pipe is connected to the bottom of the emergency compensation water tank, the other end of the emergency compensation water pipe is connected to the upper portion of the emergency compensation water tank and used for feeding cooling water into the emergency compensation water tank, and one end of the emergency compensation water pipe is connected to the bottom of the emergency compensation water tank while the other end of the emergency compensation water pipe is communicated with a tail shaft pipe; and the other end is connected to the fresh water tank on the ship. The system has a multi-path water supply function, multiple insurance is added to a stern shaft sealing assembly, and it is ensured that dry friction does not occur between stern shaft sealing pieces.

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.

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.

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.

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 hybrid power module for ship propulsion relates to the field of marine power technology. To address the problems of existing ship propulsion modules, which often employ electric motors, traditional heat engines, and parallel gearboxes for propulsion, resulting in large, complex systems with low space utilization and poor operational stability, this invention utilizes a highly integrated parallel reduction gearbox, a flexible coupling, and an electric motor. This achieves high power density and reduces the size by half compared to existing ship propulsion modules, improving hull space utilization. Furthermore, it can directly drive the propeller shaft without external power. With increased power, a diesel engine or gas turbine can be introduced to drive the propeller shaft in parallel with this module. The forward and reverse rotation of the propeller shaft can be achieved by engaging or disengaging forward and reverse clutches. This module enables operation and switching of six different main engine modes, providing high redundancy in the power system and ensuring operational stability. It has a wide range of applications. This invention is applicable to ships.

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 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.

A motor assembly includes an electric motor and an overrunning clutch wherein a shaft of the overrunning clutch is adapted to engage with an external engine, the shaft is connected to an inner member of the overrunning clutch, and the outer member of the overrunning clutch is adapted to engage with a rotor shaft of the electric motor.

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

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.