185results about "Propulsive transmission" patented technology

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 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.

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

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

Drive unit for a foil-supported watercraft, comprising a drive motor, a flexible shaft and a propeller unit, characterized in that the drive motor is arranged in the support body and is connected to the propeller unit located outside the support body via the flexible shaft.

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

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

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

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

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

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

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

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

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

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

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

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

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 underwater propeller comprises an outer cylinder, two or more propelling units are coaxially arranged in the outer cylinder in series in the water flow direction, each propelling unit comprises a cylindrical stator located on the outer ring, a cylindrical rotor is rotationally assembled in the stator through bearings arranged at the two ends, and impeller blades are arranged on the inner wall of the rotor; the outer side of each impeller blade is fixed to the inner wall of the rotor, a permanent magnet is attached to the outer wall of the rotor, coils are distributed on the inner wall of the stator and are coreless coils, and the number of turns of the coils of each propelling unit is sequentially reduced from the water inlet end to the water outlet end. The coil is a coreless coil, the coreless coil eliminates iron loss, and under the condition of the same thrust, the needed current is smaller, more electricity is saved, and the efficiency is higher.

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 transmission for a human-powered vehicle. The transmission has a primary system that includes a transmission case, a crankshaft with cog, a pair of receiver cranks, a pair of connecting rods, a pair of oscillating driver cranks, and a pair of pedals. A secondary biasing system is engaged with the primary system to provide a favorable torque around dead centers of the primary system. The transmission 150 may be configured to transmit power by driveshaft, chain, or belt to drive a wheel or propeller. In a watercraft application, an operator alternatingly applies force to a pair of pedals while seated close to the floor of a kayak 145. Power from the transmission is transmitted through a steerable lower gear case 134 via a propeller to propel the craft. The operator maneuvers the craft by means of a control lever 135 operably connected to the lower gear case by cables 136.

Described herein are examples of stiffening shafts, which in some cases are adapted to couple to a marine vessel. An exemplary stiffening shaft can be used to extend a motor from the marine vessel or be used as a shallow water stick anchor. The exemplary stiffening shafts can include a plurality of linked vertebrae stacked to form a column and at least one inelastic tension element threaded longitudinally through the plurality of vertebrae. The shaft can have a flexible configuration when the at least one tension element is released and a stiffened linear configuration when the tension element is tensed to react to torque and bending moments. Alternatively, the stiffening shaft can be used as a shallow water stick anchor for a marine vessel by piercing the bottom of a marine environment (e.g., a sea bed, a lake bed, a river bed, etc.).

Provided is a sealing device with simple pressure control. A sealing device (1) is provided with: a cylindrical body (10) into which a rotating shaft (2) is inserted; a sealing device (1) for sealing a rotating shaft (2) and a cylindrical body (10), the sealing device (1) having at least two sealing spaces (S5, S6) interposed between the sealing ring (25) and the cylindrical body (10), in which a sealing fluid (OL3) is introduced from the outside into one of the sealing spaces (S5), the one of the sealing spaces (S5) and the other of the sealing spaces (S6) being communicated through a flow path (6), and the sealing fluid (OL3) being introduced from the outside into the other of the sealing spaces (S5, S6) through the flow path (6), the sealing fluid (OL3) being introduced into the other of the sealing spaces (S5, S6) being introduced into the other of the sealing spaces (S5, S6) through the flow path (6). The flow path (6) is provided with a pressure adjustment device (30) that adjusts the pressure of the sealing fluid (OL3) introduced into one of the sealed spaces (S5) and introduces the sealing fluid (OL3) into the other sealed space (S6).

The invention relates to the technical field of assault boats, and discloses an assault boat type unmanned ship. Comprising a boat body, a lifting seat is fixedly connected to the side surface of the boat body, an electric steering module, an automatic accelerator power module and an automatic gear engaging module are integrally arranged on the lifting seat, and a control system module and a matched remote control module are further arranged on the boat body. Automatic steering, automatic accelerator and automatic gear engaging are achieved, accurate adjustment of accelerator opening and closing and gearbox gears is achieved through an electric executing mechanism, remote control or system linkage is supported, manual operation is thoroughly replaced, the response speed and accuracy are improved, and the operation safety is improved. Safety, precision, automation and maintainability of assault boat operation are achieved, and task efficiency and adaptability are improved.

The application relates to an underwater robot tail section device and belongs to the technical field of ocean engineering underwater vehicles, which solves the problems of large sealing structure space, high weight and ineffective water leakage monitoring in the prior art. The underwater robot tail section device comprises a tail cabin section; a rudder, a propeller and a control driving module are arranged in the tail cabin section; the rudder and the propeller are electrically connected with the control driving module; the tail cabin section further comprises a sealing assembly which is used for sealing the tail cabin section to prevent water in the external environment from entering the tail cabin section. The application realizes real-time detection of water leakage under the premise of effectively ensuring the sealing of the water-tight tail cabin section, and guarantees the reliable operation of the underwater robot.

Embodiments of jet pump systems are disclosed, some of which include an inlet component, an electronic controller that is cooled via inflow of water through the inlet component, a combined motor impeller system positioned proximate an outflow orifice of the inlet component, and a nozzle pump positioned proximate an outflow orifice of the motor impeller system.

A drive system (12) comprises an electric motor assembly (18) with an electric motor (20), a drive shaft (26), and a disconnecting clutch (30). The disconnecting clutch is designed to couple the drive shaft to a motor output shaft (16). The drive system further comprises a fluid system (40) with a cooling and lubricating fluid circuit (42) which is fluidly connected to a first pump (52), and a clutch actuation fluid circuit (60) which is fluidly connected to a second pump (58). The cooling and lubricating fluid circuit is fluidly connected to the clutch actuation fluid circuit via at least one of the respective pump output lines (62, 66) from the first pump and the second pump, or via the respective pump supply lines (64, 68) to the first pump and the second pump. An associated operating method is also disclosed.

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.