645results about "Transmission with propulsive element synchronisation" patented technology

The invention provides an axially parallel split permanent magnet-water lubricated composite bearing, which belongs to the technical field of bearing design, is applied to a ship propulsion shafting, and comprises a magnetic force bearing module, a magnetic shaft sleeve, a magnet mounting base and a water lubricated bearing. The magnetic force bearing module and the water lubricated bearing are arranged in parallel in the axial direction of the stern shaft. The water-lubricated bearing is arranged on one side close to the propeller and is wholly soaked in a working medium; the magnetic shaft sleeve of a cylindrical structure is installed on a stern shaft, and a stern bearing is attracted under the action of a permanent magnet array in the magnetic force bearing module. And the magnet mounting base is used for supporting the magnetic force bearing module and regulating and controlling the magnetic force. According to the integral permanent magnet-water lubricated composite bearing, the permanent magnets and the water lubricated bearing in the integral permanent magnet-water lubricated composite bearing are structurally split, the mutual restriction of a magnetic force bearing module and a water lubricated bearing module in the aspects of space, size and performance can be effectively eliminated, and the use flexibility is enhanced; the bearing distribution of the shaft system can be optimized, and it is ensured that the tail shaft system has good dynamic stability.

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.

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.

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.

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.

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 invention relates to the technical field of ocean engineering, and particularly discloses a deep-sea pressure-resistant electric thruster which comprises a thruster body, and the inner wall of the thruster body is rotationally connected with a rotating shaft; through the arrangement of the propeller body, the rotating shaft, the oil bag, the oil guide hole and the oil seal, when the propeller is used, silicon-based heat conduction oil is stored in the oil bag, the rotating shaft and related parts are continuously lubricated through the oil guide hole, the rotating smoothness and the durability of the parts are ensured, the internal pressure is balanced, seawater is prevented from permeating due to the pressure difference, and the service life of the propeller is prolonged. The oil seal prevents leakage of the silicon-based heat conduction oil and infiltration of seawater, the stability of the internal environment of the propeller is guaranteed, the mode of the pressure balancing oil bag is adopted, the inner cavity of the motor is filled with the silicon-based heat conduction oil, and the external pressure oil bag can be adjusted along with the change of water pressure, so that the pressure of the inner cavity of the motor and the external water pressure are kept balanced, and the sealing performance is improved; and water cannot enter the motor inner cavity through the sealing element of the rotating shaft, so that the insulating property of the motor is protected.

The invention discloses a magnetic suspension water-lubricated hybrid bearing, which comprises a magnetic suspension bearing and a water-lubricated bearing, the magnetic suspension bearing comprises a stator core, a stator coil and an insulating pouring sealant, the water-lubricated bearing comprises a bushing and a bearing bush, and the magnetic suspension water-lubricated hybrid bearing also comprises an intelligent monitoring and control system consisting of a power amplifier, a controller, a displacement sensor and a circuit thereof; when the magnetic conductive metal material rotating shaft supported by the magnetic suspension bearing and the water lubricated bearing is in working conditions such as starting, stopping, low speed or overload, the controller controls the power amplifier to enable the magnetic suspension bearing to enter a working state to provide main bearing force for the rotating shaft, and friction and abrasion of the bearing bush are effectively reduced; when the rotating shaft is in a high-speed and stable working condition, the controller controls the power amplifier to reduce the current and the electromagnetic force of the magnetic suspension bearing, so that the supporting effect of the magnetic suspension bearing is weakened, the water-lubricated bearing is in a stable hydrodynamic lubrication stage, main bearing force is provided for the rotating shaft, and the power consumption of the magnetic suspension bearing is effectively reduced.

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.

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 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 utility model belongs to the technical field of propellers, and particularly relates to a ship propeller which comprises a propeller body, a propeller, a connecting rod and a wave suppression plate, a flange plate is fixedly connected to the top end of the connecting rod, a through hole is formed in the flange plate, a wiring channel is formed in the connecting rod, and two annular grooves are formed in the top end of the flange plate. The inner walls of the two annular grooves are fixedly connected with rubber sealing rings and annular wrapping bags correspondingly, and the annular wrapping bags are filled with negative thermal expansion filler. The negative thermal expansion filler and the rubber sealing ring are expanded at different temperatures, so that the sealing performance between the flange plate and the ship body flange is improved, and the sealing performance between the flange plate and the ship body flange can always keep stable high sealing performance in different periods; water is prevented from entering the ship body and the wiring channel due to a gap between the flange plate and the ship body flange, and the situation that the line and the propeller body are damaged due to water immersion is prevented.

The present invention provides a container ship stern tube sealing system, including a ship draft gauge pressure monitoring unit, a valve pressure control unit and a stern tube sealing pressure execution unit, the ship draft gauge pressure monitoring unit is connected to the valve pressure control unit, the valve pressure control unit is connected to the stern tube sealing pressure execution unit, the ship draft gauge pressure monitoring unit is used to monitor the draft pressure signal, the valve pressure control unit is used to receive the draft pressure signal and the air pressure signal and control the action of the stern tube sealing pressure execution unit, and the stern tube sealing pressure execution unit controls the air pressure and oil pressure in the system to a preset value through a corresponding valve group. The ship draft indicator adopted by the present invention does not need to be purchased separately, and the cost is low. The stern tube air sealing system dynamically adjusted according to the ship draft pressure controls the air pressure and oil pressure difference and improves the service life of the sealing ring. At the same time, when the air seal fails, the stern shaft seal can still automatically operate normally, which increases the reliability of the system.

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 invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle driving module capable of switching a water propeller and an air propeller, an unmanned aerial vehicle and a switching method.The driving module capable of switching the water propeller and the air propeller comprises the water propeller, the air propeller, a motor, a motor mounting base, a first one-way bearing and a second one-way bearing, and the motor is provided with double output shafts and is mounted on the motor mounting base; inner and outer rings of the first one-way bearing are fixedly connected with an output shaft on one side of the motor and the empty paddle respectively, inner and outer rings of the second one-way bearing are fixedly connected with an output shaft on the other side of the motor and the water paddle respectively, and the water paddle is fixedly connected with the walking wheel; speed reducers with different reduction ratios can be arranged for empty propellers or water propellers according to needs. According to the scheme, the motors are controlled to rotate forwards or backwards to drive the empty propellers or the water propellers / the walking wheels to rotate, air flight, underwater sneaking, land movement and cross-domain movement switching are achieved in cooperation with the variable structure design of the unmanned aerial vehicle, and the integration and control complexity of the triphibian unmanned aerial vehicle is reduced.

The invention discloses an air sealing system for a steering oar, which relates to the technical field of ships and comprises an oar shaft seal, a steering seal, an input shaft seal, an air control unit, an oar shaft seal oil tank, a discharge and collection unit, an oar shaft seal lubricating oil pump unit, an input shaft seal oil tank and an input shaft seal lubricating oil pump unit, the invention discloses a full-rotation steering oar sealing oil tank. According to the air sealing system for the full-rotation steering oar, the sealing performance of the full-rotation steering oar is improved, the service life of the sealing system is prolonged, the risk of lubricating oil leakage is reduced, pollution to the environment is reduced, and the reliability of operation of the full-rotation steering oar in a complex water area is improved.

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 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.

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.

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.