152results 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 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 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 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 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 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.

The utility model discloses a stern shaft bracket fairing, a boat power device and a boat, the stern shaft bracket fairing comprises a main body, the middle part of the main body is provided with a through hole for a stern shaft to pass through, the outer diameter of the main body is gradually increased towards one side of a shaft hub of a stern shaft bracket, the side of the main body towards the shaft hub is provided with a bottom wall, the bottom wall is provided with a fixing hole, and the fixing hole is provided with a through hole. And the shaft sleeve is fixedly connected with the hub. Through the conical structure design that the outer diameter of the main body is gradually increased towards the shaft hub side, a gradually-changed guide surface can be formed in the fluid flowing direction, and the impact resistance between the front end of the shaft hub of the stern shaft bracket and a water body during sailing is remarkably reduced; moreover, the flow guide cover can be rigidly connected with the shaft hub through a mechanical fastener due to the arrangement of the bottom wall fixing hole, so that an integrated protection structure is formed, and the structural deformation and displacement risks generated under the navigation dynamic load are avoided; the three functions of resistance reduction, cavitation corrosion inhibition and foreign matter blocking are integrated on the whole, finally, the power transmission efficiency of the ship is improved, and the service life of the propeller and the service life of the bearing are prolonged.

The utility model discloses a lifting type full-rotation steering oar lifting sealing structure which comprises a sealing seat and a lifting shaft, a sealing cavity is formed in the sealing seat, the sealing cavity penetrates through the sealing seat in the vertical direction, the lifting shaft penetrates through the sealing cavity, and the lifting shaft is in sliding fit with the sealing seat; a first sealing ring, a second sealing ring, a guide ring and a third sealing ring which are sequentially arranged from top to bottom are mounted between the lifting shaft and the sealing seat, the first sealing ring, the second sealing ring, the guide ring and the third sealing ring are mounted on the sealing seat, and the first sealing ring, the second sealing ring, the guide ring and the third sealing ring are in sliding fit with the lifting shaft. In the scheme, the three sealing rings form a triple sealing barrier between the sealing seat and the lifting shaft, so that seawater intrusion can be effectively prevented; the guide ring can play a role in guiding and can also bear thrust generated when the propeller works, and the situation that the sealing effect is affected by displacement of the lifting shaft is prevented.

A 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.

The invention provides an underwater combined sealing type shaftless propeller. The underwater combined sealing type shaftless propeller comprises a machine shell, a split type high-precision rotor, a stator and a combined sealing system. Aiming at the difficulty of underwater sealing, the invention designs a pre-tightening expansion type sealing structure, and a wave spring is utilized to compress a rubber sealing gasket through a rigid gasket, so that the rubber sealing gasket expands in the radial direction to block a shell gap; and meanwhile, dynamic and static ring attached type mechanical sealing is adopted. In order to solve the problem of silt clamping stagnation, a centrifugal sand throwing inclined plane is designed in the device and is matched with an oil storage ring, so that slow permeation lubrication of lubricating grease and adsorption and capture of tiny sand grains are realized. The underwater self-lubricating sealing device is compact in structure, high in sealing reliability, excellent in silt resistance and self-lubricating performance and suitable for various underwater unmanned equipment.

The invention relates to a low-vibration noise water-lubricated bearing bush with a bionic snake scale microstructure and a preparation method thereof, and aims to solve the problem of abnormal friction noise of ship water-lubricated rubber and medium carbon steel bearings in a complex seawater environment. The invention provides a method for preparing a bionic snake-shaped scale skin micro triangular array on the surfaces of rubber and medium carbon steel materials to inhibit friction noise, which mainly comprises the following steps of: 1, performing feature extraction on a snake belly scale skin microstructure, including parameters such as shape, arrangement mode, feature size and the like of the microstructure; 2, performing similarity simplification on the extracted snake abdomen scale epidermis microstructure; and 3, copying the simplified bionic snake scale microstructure to the surfaces of water-lubricated bearing rubber and medium carbon steel bearing bushes through laser etching and hot stamping technologies. The surface of the micro-triangular array displays the indentation modulus and the friction force which are consistent with the topographic features of the micro-triangular array and change periodically, so that viscous sliding is favorably interrupted, friction noise is inhibited, and the micro-triangular array has important significance on ship concealment and safety.

A propulsor assembly for a marine drive has a propulsor, an adapter having a stem which supports the propulsor, a wear resistant snubber on the stem, and an elastomeric member which is sandwiched between the wear resistant snubber and the stem, the elastomeric member being configured to bias the wear resistant snubber radially outwardly into engagement with the propulsor.

The invention belongs to the composite technical field of magnetic field regulation and hydrodynamic force supporting, and discloses a magnetic-water composite vibration reduction bearing based on pole region magnetic field self-adaptive regulation, which comprises a rotor, a stator, a water lubricating film layer and a magnetic field generation assembly coaxially arranged with the stator, the magnetic water composite damping bearing with the self-adaptive magnetic pole distribution further comprises a self-adaptive magnetic pole distribution unit, a distributed sensing unit and a double-loop controller. The magnetic-water composite vibration reduction bearing has the advantages of being high in self-adaptive bearing capacity, excellent in broadband vibration reduction and low-noise performance, high in safety and redundancy, good in engineering adaptability and the like.

The invention belongs to the technical field of ship propulsion system bearing structure design and vibration control, and discloses an isobaric expansion type stern bearing based on a negative Poisson's ratio topological lining structure, and a negative Poisson's ratio topological layer is composed of geometric topological units and generates tangential expansion deformation under the action of radial load. Through the negative Poisson's ratio effect, the radial compression load of the shaft system is converted into circumferential expansion response, isobaric expansion of a shaft-lining contact area is achieved, the effective bearing area is increased, and contact pressure distribution is homogenized. The topology lining is divided into a head end topology area, a transition area, a middle topology area, a transition area and a stern end topology area in the axial direction, and all the areas are matched with non-uniform distribution of shaft system bending, unbalance loading and lubricating states under the low-speed and heavy-load working conditions by regulating and controlling topological unit geometric parameters, equivalent Poisson ratios and negative Poisson ratio topological layer thicknesses. According to the invention, edge high pressure and local wear can be obviously reduced, water film stability is improved, bearing capacity and vibration and noise reduction performance of the stern bearing are improved, and service life is prolonged.

The present application relates to the technical field of the submersible shock absorbing thrust bearing, and particularly relates to a seawater pressure compensation device for a shock absorbing thrust bearing. The seawater pressure compensation device structure can flexibly conduct the external environment water pressure of the submersible to the internal hydraulic system and realize the static water thrust balance of the shock absorbing thrust bearing, which is of great significance to realize the full-depth effective shock absorption of the shock absorbing thrust bearing. The seawater pressure compensation device is provided with displacement monitoring and alarm functions, which can timely and effectively remind the operator to avoid the loss of the compensation device function caused by pipeline corrosion and leakage in the external environment water pressure transmission process. The present application has the self-closing function under the extreme condition of pipeline damage, which can avoid the use safety hazard of the submersible caused by a large amount of water in the extreme condition.

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

The application discloses a water-lubricated cooling circulation system for a ship stern shaft and relates to the technical field of cooling circulation, which comprises a water cooling device, a water tank main body connected to the bottom of a rack, a water supplement tank installed at the top end of the water tank main body, a circulating water pump installed at the top end of the water tank main body, a self-adjusting water pumping device connected to the water inlet of the circulating water pump, and an elastic plugging device installed in the interior of the water tank main body and in communication with the inner cavity of the water supplement tank. The elastic positioning mechanism is limited, so that the plugging head keeps the state of not plugging the inner cavity of the water outlet pipe, the water in the inner cavity of the water supplement tank can flow into the inner cavity of the water tank main body through the elastic plugging device, and the normal operation of the equipment is ensured.

The PTO / PTI device comprises a driving meshing gear sleeve, a front axle driving joint fork, a joint fork shaft and a front axle connecting rocker arm, one end of the front axle connecting rocker arm is fixedly connected with the joint fork shaft, the joint fork shaft is coaxially and fixedly connected with the front axle driving joint fork, an outer ring groove is formed in the outer side of the driving meshing gear sleeve, and the front axle driving joint fork is coaxially and fixedly connected with the joint fork shaft. A fork foot of the front axle driving joint fork extends into the outer ring groove, a spring is installed in an installation hole in the circumference of the splined hub, one end of the spring abuts against the bottom of the installation hole, the other end of the spring abuts against the limiting piece, a first limiting groove and a second limiting groove which are matched with the limiting piece are formed in the inner side of the driving meshing gear sleeve, and an outer spline is arranged on the circumference of the PTO / PTI output gear. The PTO / PTI power transmission device can effectively prevent ship sailing jolting and accidental slippage when the driving meshing gear sleeve is connected with the PTO / PTI output gear, and guarantees the continuity of PTO / PTI power transmission and the stability of the separation state.

The invention discloses a propeller and a ship, and relates to the technical field of ship drive.The propeller comprises a driving device, a support and a power output device.The driving device comprises a shell, a steering driving mechanism, a manpower driving mechanism, a power driving mechanism, a transmission mechanism and a clutch switching mechanism, the manual driving mechanism and / or the power driving mechanism are / is selectively in transmission connection with the transmission mechanism through the clutch switching mechanism, the support is rotationally arranged on the shell and connected with the steering driving mechanism, the power output device is arranged on the support and located outside the shell, and the transmission mechanism is connected with the power output device. The manpower driving mechanism and / or the power driving mechanism can drive the power output device to operate and generate thrust through the transmission mechanism, and the steering driving mechanism is used for driving the support to rotate so as to drive the power output device to rotate and change the orientation of the power output device, so that the flexibility of controlling the ship body is improved.

A communication system for use in monitoring an underwater structure, the communication system having a communication module comprising at least one data input mechanism, a data management mechanism, a wireless communication mechanism, and a power supply, such that, in use, data is input by way of the data input mechanism is provided to the data management mechanism which is operable to output representative data to the wireless communication mechanism for onward transmission.

To simplify and miniaturize a structure for transmitting power of two power sources to a propeller, in a ship propulsion machine having the two power sources for rotating the propeller.SOLUTION: The marine propulsion device includes an engine that is a first power source that rotates the propeller, a motor that is a second power source that rotates the propeller, an engine drive shaft 13 connected to the engine, a motor drive shaft 14 connected to the motor, an upper transmission shaft 17 connected to the propeller shaft, and a dog clutch 40 that switches a connection mode of the engine drive shaft 13, the motor drive shaft 14, and the upper transmission shaft 17 between a mode in which the engine drive shaft 13 and the upper transmission shaft 17 are connected to each other and a mode in which the motor drive shaft 14 and the upper transmission shaft 17 are connected to each other.SELECTED DRAWING: Figure 2

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 utility model discloses a marine propeller gearbox, which belongs to the technical field of marine propellers, and comprises a main box shell, a shaft pipe sleeve is fixedly mounted at the bottom end of the main box shell, a lower box shell is fixedly mounted at the bottom end of the shaft pipe sleeve, a clutch mechanism is arranged in the main box shell, and the lower box shell is fixedly mounted at the bottom end of the shaft pipe sleeve. A gear shifting mechanism is arranged in the main box shell, and a transmission mechanism is arranged in the shaft pipe sleeve and the lower box shell. The clutch mechanism and the gear shifting mechanism are arranged, the wet-type multi-plate clutch is adopted as a core component of the clutch mechanism, the clutch is composed of a plurality of metal friction plates and a pressing device, the metal friction plates are arranged alternately, the friction plates are soaked in lubricating oil, and the lubricating oil not only plays a cooling role, but also can provide a more stable friction coefficient. According to the utility model, the gear shifting mechanism and the transmission mechanism are arranged, and the horizontal shaft design is used, so that the use cost is reduced.

This disclosure provides an installation device and method for a sealing assembly, belonging to the field of mechanical seal technology. The installation device includes an operating member and a positioning ring. Along the axial direction of the positioning ring, the operating member is located on one side of the positioning ring and connected to it. The operating member is used to insert into the gap between the fixed base and the rotating shaft tube. The positioning ring has an annular mounting groove on the side away from the operating member, which is used to accommodate the lip seal ring. This disclosure can improve the installation quality of the sealing assembly and enhance the sealing effect.

The invention discloses a ship stern shaft multistage sealing device capable of preventing oil leakage, and relates to the technical field of sealing devices.The ship stern shaft multistage sealing device comprises a stern shaft tube, a plurality of bearings are arranged in the stern shaft tube, a stern shaft used for driving a propeller to rotate is arranged in the stern shaft tube in a sleeved mode, and sealing mounting shells are arranged at the two ends of the stern shaft tube correspondingly; a sealing device used for sealing the two ends of the stern shaft tube is arranged in the sealing installation shell, a triangular block at one end of a hydraulic push rod drives an extrusion ring to be adjusted in a small range, and the extrusion ring applies radial extrusion force to a spring sealing ring through a first wedge block and a second wedge block; the clamping force between the spring sealing ring and the stern shaft can be automatically adjusted through the hydraulic push rod according to the draft of a ship and the resistance of seawater, the sealing effect can be effectively improved, and lubricating oil is prevented from leaking; meanwhile, after the clamping force is adjusted, the stability of the tail shaft during rotation can be improved according to different resistances borne by the propeller.

The application belongs to the field of vibration isolation and noise reduction equipment, and discloses a variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator and a use method. The variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator comprises a supporting assembly, a positive stiffness assembly and a negative stiffness assembly. The positive stiffness assembly provides static bearing capacity and is composed of an air spring and a linear spring, and the negative stiffness assembly is composed of a magnetic group and a supporting structure thereof, and the purpose of reducing dynamic stiffness is achieved by being connected in parallel with the positive stiffness assembly. The variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator has large static stiffness and small dynamic stiffness, three-way forces generated by the movement between the inner magnetic group and the outer magnetic resistance are used to offset a part of three-way forces generated by the air bag, the function of reducing stiffness is realized, the variable load magnetic gas type three-way high static low dynamic stiffness vibration isolator can adapt to the change of load working conditions, has a wider application scene and better three-way low-frequency vibration isolation performance, a wide vibration isolation frequency band, and stable working performance.