338 results about "Propulsor" patented technology

The present application relates to the technical field of water unmanned ship, in particular to a barrier propeller, a water monitoring robot and a position switching method of an intercepting net cover. The barrier propeller comprises a propeller body having a water inlet and a water outlet; further comprising an intercepting unit, a guide assembly and a swing arm, the swing arm is used to drive the intercepting unit to reciprocate between the water inlet and the water outlet; in the process of swing of the swing arm, the intercepting unit is in abutment with the guide assembly, so as to force the intercepting unit to overturn relative to the swing arm; the guide assembly further comprises a posture maintaining structure, through cooperation of the swing arm and the guide assembly, a single rotary driving input is converted into a composite action output of displacement, overturning and locking. Compared with the prior art which needs to configure multiple power sources such as lifting motor and overturning motor, the present application can complete the whole cleaning action by only one driving motor.

The application provides a kind of sub-body ROV accurate recovery method and device for sub-mother type AUV, it is related to underwater robot technical field, the method comprises: during the task execution of sub-body ROV in underwater, in response to sub-body recovery instruction, control parent body AUV stay in specified recovery position, and collect the optical image of sub-body ROV;Determine the orientation of sub-body ROV based on optical image;Determine the heading angle of parent body AUV and the initial heading angle of sub-body ROV;Determine the target heading angle of sub-body ROV based on orientation, the heading angle of parent body AUV and the initial heading angle of sub-body ROV;Determine the correction torque required when control cable-releasing mechanism pulls back sub-body ROV based on the heading angle of parent body AUV and the target heading angle of sub-body ROV;Determine the operating parameter of each propeller on sub-body ROV in combination with correction torque;Correspondingly control propeller operation based on operating parameter, to recover sub-body ROV.

FIELD: underwater equipment.SUBSTANCE: invention is intended for precise automatic docking and fixation of autonomous unmanned underwater vehicles (AUVs) using bottom mooring devices (BMDs). For automatic docking and fixation of an autonomous unmanned underwater vehicle on bottom mooring devices, an underwater vehicle is used with the ability to detect bottom mooring devices using a hydroacoustic navigation system installed on it. Using the onboard control system, the underwater vehicle stabilizes its position in the working area of the manipulator with a given orientation to its grip; simultaneously with the last command, a signal is sent using the hydroacoustic navigation system of the underwater vehicle about its arrival in the area of the bottom mooring device. After receiving this hydroacoustic signal from the hydroacoustic navigation system, a machine vision system installed near the manipulator's grip is turned on, and with its help, the spatial location of the clamp of the gripping device located in the bow part of the underwater vehicle’s hull is detected, and then, with the help of the technical vision system and the manipulator control system, its open grip is smoothly moved towards the clamp until the contact sensor, located inside the gripper jaws, is triggered; upon the signal from the contact sensor, the gripper jaws are closed, fixing the underwater vehicle in the water space. Using the manipulator control system, the corresponding control signals are sent to the manipulator drives, smoothly moving the underwater vehicle to the bottom mooring device platform; during this movement, the underwater vehicle’s thrusters maintain its horizontal position; said movement of the underwater vehicle by the manipulator is completed after the activation of the locking devices located, respectively, on the underwater vehicle and the bottom mooring device. After said fixation, using contactless devices located inside the fixing devices, the underwater vehicle's batteries are recharged via a cable-rope, information is exchanged between this underwater vehicle and the accompanying vessel, or the underwater vehicle is quickly lifted onto this vessel using a winch.EFFECT: precise and rapid docking of the AUV with the charging device or with the device for its rapid ascent to the surface, as well as rigid fixation of the AUV at a given point in the water space when the onboard equipment of this apparatus performs arbitrary working operations.1 cl, 1 dwg

This invention relates to the field of underwater propulsion technology, specifically to an array-type disc-shaped underwater propulsion device based on piezoelectric drive, comprising: a shell, disc-shaped, with the axial direction of the shell pointing in the direction of propulsion; an inlet and a rear cover on the shell, the shell and the rear cover forming a receiving cavity; multiple piezoelectric drive units embedded within the shell, each piezoelectric drive unit's jet direction facing the rear of the propulsion device; and a hollow suction channel located within the receiving cavity and correspondingly positioned around each piezoelectric drive unit. The inlet of the suction channel connects to the inlet, and the outlet is arranged around the nozzle of the jet cavity, forming a local negative pressure suction zone. This design enables the propulsion device to provide partial thrust even during low-pressure fluid intake, further enhancing the propulsion performance.

The application discloses a same-rotor double-blade non-through channel lateral propeller based on shaftless driving, which is based on the shaftless rim driving principle, has a same-rotor double-blade structure, has the ability of vector adjusting the propelling direction, and has a non-through annular channel structure. Main structural features of the same-rotor double-blade non-through channel lateral propeller include an annular flow channel shell structure, a blade-rotor-blade structure, a water inlet flow channel, a water outlet flow channel, a pitch angle adjusting mechanism, an azimuth angle adjusting mechanism and the like. The center of the inner blade of the rotor is the water outlet flow channel, and the water inlet flow channel is circularly distributed around the water outlet flow channel. Different from the traditional channel lateral propeller with the flow channel penetrating the inside of the carrier, the water inlet flow channel of the application is collected and turned in the annular flow channel inner shell and becomes the water outlet flow channel; the azimuth angle adjusting mechanism based on the deflection principle of the flow guide vane is designed at the water outlet flow channel outlet of the application, which can adjust the azimuth angle of the wake flow; the pitch angle adjusting mechanism is designed in the annular flow channel shell, which can adjust the pitch angle of the wake flow.

A propulsion system (20) includes a propulsor (26), an engine (22), an electrical assembly (24), and an emergency energy protection assembly. The engine (22) includes a fuel system (38). The fuel system (38) includes a fuel control unit. The electrical assembly (24) includes a battery (66), a motor control unit (64), an electric motor (62), and an electrical distribution system (68). The electrical distribution system (68) includes at least one contactor electrically connected between the battery (66) and the motor control unit (64). The at least one contactor is switchable between a closed state and an open state. The engine (22) and the electric motor (62) are coupled with the propulsor (26). The emergency energy protection assembly includes an emergency actuator. The emergency actuator is actuable in an actuated state to control the at least one contactor to switch to the open state, control the motor control unit (64) to deenergize the electric motor (62), and control the fuel control unit to stop fuel flow for the engine (22).

Aspects described herein relate to flow turning across an aircraft wing. An aircraft may include propulsors configured to propel an airflow across the upper surface of the aircraft wing. Due to the Coandă effect, the airflow may adhere to the upper surface of the aircraft wing. A movable flap may be attached to a trailing edge of the aircraft wing. The flap may be configured to rotate between retracted and rotated positions. The flap may be configured to rotate up to and beyond 90 degrees. During rotation, another flap may pivot to a deployed position to provide a continuous surface between a trailing edge of the aircraft wing and a leading edge of the moveable flap for the airflow to adhere to, which facilitates turning the flow of air across the aircraft wing.

1. Name of the product in this design: Marine propeller head (2). 2. Purpose of this design: For installing batteries and connecting handles and rods. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This invention belongs to the field of ship formation control technology, specifically relating to a neural network-based anti-interference control method for multi-ship formations at sea. It utilizes neural networks to approximate and compensate for uncertainties in the model, while simultaneously constructing a disturbance observer to achieve effective estimation of coupled marine environmental disturbances. To overcome the problem of traditional observers' dependence on accurate models, this method parameterizes the ship motion equations and disturbance terms to establish a canonical model of the disturbance, and uses a disturbance filter to achieve exponential convergence estimation of the disturbance state vector, thus transforming the disturbance suppression problem into an adaptive control problem. Furthermore, this method fully considers input quantization, effectively reducing propeller wear and communication burden by slowing down the rate of change of actuator output. Compared with existing technologies, the anti-interference formation control strategy proposed in this invention can achieve online estimation and suppression of unknown disturbances without relying on any prior model dynamics knowledge.

This application belongs to the field of robotics technology, providing a modular pipeline inspection robot and its control method suitable for pressurized water-filled pipe networks. It includes a head-mounted vision acquisition mechanism, a magnetic flux leakage (MF) detection mechanism, and a propulsion mechanism. The head-mounted vision acquisition mechanism acquires images of the inner surface of the pipe and is rotatably and sealingly connected to the MF detection mechanism. The MF detection mechanism includes a folding mechanism and a MF detection sensor. The folding mechanism is configured to be driven to control the MF detection sensor to be in contact with or away from the inner surface of the pipe. The MF detection sensor is used to acquire pipeline defect data. The MF detection mechanism is rotatably and sealingly connected to the tail-mounted main propeller. The control motherboard adjusts the thrust of each vertical propeller in real time through closed-loop control, controlling the robot to travel along the centerline of the pipe. This robot has a compact structure, flexible movement, can adapt to water-filled and certain pressure environments, and integrates multiple detection methods, improving the reliability and applicability of pipeline inspection.

The application discloses a kind of full-rotation ship decomposed type alternate optimization thrust distribution method, belongs to ship propeller control technical field.This method will full-rotation ship thrust distribution problem be divided into thrust amplitude and azimuth alternate optimization sub-problems, by constructing the augmented Lagrangian function with box constraint, in combination with gradient descent and backtracking line search strategy, give the explicit solution of optimal thrust and azimuth, realize propeller thrust and azimuth collaborative optimization.This method can unify the processing singularity of geometric matrix, thrust and azimuth size, change rate, energy consumption, accuracy and other constraint requirements, with low computational complexity, high efficiency, strong real-time and numerical stability, avoid the mutation phenomenon of traditional algorithm under boundary constraint, suitable for the high-frequency control demand of intelligent tugboat and other full-rotation propelling ships, with good engineering adaptability and popularization value.

This invention relates to the field of marine propulsion technology, specifically to an auxiliary propulsion structure for electric ships. The structure includes a ship hull, a propeller mounted on the bottom of the hull, and rotating rods fixedly connected to both sides of the hull. An auxiliary propeller is mounted on each rotating rod. Through an idling cooling mechanism, when the water inlet is above the water surface, causing the drive rod to drive the auxiliary propeller to idle, the idling cooling mechanism opens an emergency water path. This allows pre-stored cooling water from the tank to be precisely delivered via drip pipes to the junction of the drive rod and the bearing. This directional dripping forms a water film at the friction interface, providing immediate lubrication and drag reduction, as well as rapid heat absorption and cooling, preventing high-temperature wear, deformation, or sintering of components. Compared to traditional unprotected designs, this mechanism is fast-responding and highly targeted, minimizing damage to core components during idling and ensuring reliable operation of the auxiliary propeller in complex waters.

Modular engine (1) for missiles, comprising: an engine inlet (10); a gas turbine (12); a payload turbine (14); at least one propulsor (20) and a nozzle assembly (16), wherein an outlet of the engine inlet (10) is connected to an inlet of the gas turbine (12), and wherein an outlet of the gas turbine (12) is selectively connectable to an inlet of the nozzle assembly (16) and / or to an inlet of the payload turbine (14) for activating and deactivating the payload turbine (14) for driving the at least one propulsor (20), characterized in that the engine (1) is designed to deactivate the payload turbine by jettisoning the payload turbine (14) and / or the at least one propulsor (20).

This invention relates to a fishtail-type propeller propeller, comprising a base for fixing to a hull, a rotating shaft vertically supported on the base and rotatable relative to the base, and a vertically mounted propeller plate. A laterally extending connecting rod is fixed to the rotating shaft. The invention is characterized by: a limiting seat fixed to the connecting rod, the limiting seat having a vertically extending shaft hole in which a pin is installed; the propeller plate being fixed to the pin and located below the limiting seat; a limiting member also being provided on the pin; and an arc-shaped movable space centered on the pin and a limiting part inserted into the arc-shaped movable space between the limiting member and the limiting seat. The propeller plate rotates relative to the limiting seat within the range defined by the arc-shaped movable space via the pin. This invention allows the propulsion of the hull to come from the combined force of the flexible connection between the water flow and the propeller plate and the rigid connection between the rotating shaft and the propeller plate, which, under the same conditions, helps to increase the forward speed of the hull and is easy to operate.

The application relates to a force couple balance and longitudinal array push-pull vertical take-off and landing high-speed aircraft, belonging to the technical field of aircrafts, which comprises a fuselage, a rotor, a fixed wing, a steering controller and a propeller. The rotor is installed at the top of the middle part of the fuselage through a rotor shaft, and a clutch is arranged between the rotor and a power system and / or a transmission system matched with the fuselage, so as to be controlled to be disconnected or to transmit power to the rotor. The steering controller comprises a fixed base and a rotating base, and each of the nose and the tail has a set of the rotating base. The propeller is provided with two propellers which are respectively installed on the rotating bases of the nose and the tail, and are controlled to rotate with the rotating bases relative to the fixed base. The force couple formed by the front and rear thrust vectors is used to balance the reverse torque brought by the rotor. When the propeller is coaxial with the middle axis of the fuselage, the wind area of the single propeller obtains double thrust. The application can improve the energy utilization rate, improve the carrying capacity, improve the flight safety performance and obtain a longer hovering time.

The application discloses a kind of underwater self-explosion barrier robots in the technical field of underwater robot, including fuselage, propeller, mechanical arm, attachment mechanism, observation instrument and charging mechanism;The propeller includes horizontal propeller and vertical propeller, the horizontal propeller and vertical propeller are symmetrically installed in the left and right sides of fuselage, the observation instrument is installed in the grabbing surface of fuselage, the attachment mechanism is installed in one end of horizontal propeller, and with the grabbing surface same direction;The mechanical arm is symmetrically installed in the upper and lower sides of fuselage, the mechanical arm has at least three degrees of freedom, the free end of the mechanical arm is provided with mechanical claw, the mechanical arm can be gripped with pincer type;The charging mechanism is installed in the non-grabbing surface of fuselage.The underwater self-explosion barrier robot provided by the application can be closely adsorbed on the surface of barrier, suitable for a variety of complex shape barriers, high applicability range and high stability, high barrier efficiency and low manufacturing cost.

The utility model discloses an electric decoy duck propeller, including propeller subassembly, timer component, power connection line and battery output line, wherein propeller subassembly connects duck decoy, is placed in water and provides downward propulsion power, controls duck decoy and makes the action of diving in water in water, the output end of power connection line is connected to propeller subassembly, and propeller subassembly is provided with the transmission of underwater signal and electric energy, the output end of timer component is connected to the input end of power connection line, and propeller subassembly is provided with control signal, and the frequency and length of time of duck decoy diving are controlled, and battery output line is connected to the input end of timer component, and propeller subassembly is provided with electric energy. The utility model discloses simple structure, low in production cost, easy operation, high practicality can realize the action of the multiple electric duck to underwater movement to imitate duck natural eating to reach the effect of attracting duck landing water surface, so that better hunting.

This invention discloses a river water ecological restoration and purification device, belonging to the field of river water purification technology. It includes a base plate with an air cushion installed at its bottom. Above the base plate, from front to back, are sequentially arranged an ice-breaking and salvage conveying component, a collection and separation component, a water purification component, and an oxygenation component. The collection and separation component contains a vibrating filter component. A drive component is located between the ice-breaking and salvage conveying component and the collection and separation component. A propeller is fixedly installed at the rear of the base plate, and a power component for unmanned operation is installed on the top of the base plate. This invention, through its integrated ice-breaking and salvage conveying component, collection and separation component, vibrating filter component, water purification component, and oxygenation component, highly integrates multiple functional modules such as ice breaking, salvage, conveying, solid-liquid separation, water purification, and oxygenation, filling the gap left by the inability of most cleaning equipment to be used in winter and achieving uninterrupted river ecological restoration.

A propulsion system includes a propulsor, an engine, an electrical assembly, a controller, and an uncontrollable high thrust (UHT) protection assembly. The engine includes a fuel system. The engine is coupled with the propulsor. The fuel system includes a fuel control unit. The electrical assembly includes an electric motor and a motor control unit. The electric motor is coupled with the propulsor. The motor control unit is electrically connected with the electric motor. The controller includes a first controller channel. operable to control the fuel control unit to direct fuel to the combustor and to control the motor control unit to direct electrical power to the electric motor. The UHT protection assembly includes a first protection circuit operable to identify a presence or an absence of a UHT condition of the propulsor and, in response, generate a shutdown signal for the fuel control unit and the motor control unit.

The utility model relates to a hybrid drive variable gliding wing underwater robot belongs to underwater robot field, including streamline shell, its appearance imitates seat head whale body shape design, surface smooth transition, cross section is oval, variable gliding wing mechanism, relative to the symmetrical surface of shell 1 symmetrical arrangement, including gliding wing, worm, worm wheel and steering wheel, the gliding wing is connected through the meshing of worm wheel and worm, and the worm is driven by the steering wheel, hybrid power system, including propeller and pump jet propeller, and the propeller includes two symmetrical side propellers and a stern propeller, the pump jet propeller is installed in the recess inside the bottom of shell, and the nozzle is rearward and is equipped with a fairing, buoyancy adjusting system, including high-pressure gas cylinder and air release valve, and the robot float center is adjusted through gas charging and discharging, the utility model realizes the efficient cooperation of gliding, propulsion and attitude control, and has good environmental adaptability and recyclability.

This utility model relates to the field of propeller direction control technology, specifically a marine propeller direction control device, including a protective cover, a mounting plate, a rudder stock, and a rudder blade. The marine propeller direction control device has a cylindrical body, and the mounting plate and protective cover are installed inside the cylindrical body. A servo motor is mounted on the top of the mounting plate via a mounting base, and the output shaft of the servo motor is fitted with a driving helical gear. The rudder stock is fitted on one end of the mounting plate via a bearing, and the top of the rudder stock is fitted with a driven helical gear. A positioning bushing is installed at the bottom of the cylindrical body, fitted around the rudder stock, and connected to a flared opening welded to the bottom of the positioning bushing. An inner ring is provided on the top periphery of the sealed chassis, and the inner ring is located inside the flared opening and fits tightly. The marine propeller direction control device automatically controls the rudder blade to change direction, thereby controlling the ship's course, effectively limiting the rudder stock, making it rotate stably, and reducing sway.

The application discloses a foldable water-air-crossing multi-modal robot system, which comprises a body, a motion core module, a modal switching module, a rotor module and a propeller module, a waterproof sealed cabin is arranged in the body, the motion core module is installed in the waterproof sealed cabin of the body, the modal switching module is installed above the body, the rotor module is connected with the modal switching module, and the rotor module is unfolded or folded through the modal switching module, and the propeller module is installed below the body. The whole machine has compact structure and high lightweight degree, the task execution capability and operation dimension of the aircraft in a complex environment are significantly improved, and large-scale engineering application and technology popularization are facilitated.

The utility model relates to a pharmaceutical raw material feeding device convenient to disinfect, including spiral propeller body, cleaning component and disinfection subassembly, the central shaft of spiral propeller body is hollow shaft, one end leads out the side end cover of spiral propeller body and is equipped with first flange plate, its technical key points are: the hollow shaft is passed in and is equipped with infusion tube, the infusion tube one end is closed and is located in the hollow shaft, the other end leads out the hollow shaft and is equipped with second flange plate, the hollow shaft inner wall is connected with the infusion tube outer wall between using key joint, the infusion tube outer wall is along the axial interval and is embedded multiple groups of shower nozzles, the radial through -hole that corresponds with the shower nozzle is equipped on the hollow shaft outer wall, the first flange plate and second flange plate are connected with axial push -and -pull cylinder and return spring, and the disinfection subassembly includes the ultraviolet disinfection lamp of built -in in the conveying cylinder top of spiral propeller body. The device strengthens disinfection effect on one hand, protects cleaning component not to be eroded by pharmaceutical raw material on the other hand.

1. Name of the product in this design: Submersible Propulsion Device (P006-Wearable). 2. Purpose of this design: To provide power to divers underwater. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

The utility model relates to submersible propeller technical field especially for a kind of structure integration's submersible propeller, including control handle, control handle lower end is fixedly installed with propulsion mechanism by bolt, aluminium alloy electrically-controlled heat dissipation shell is installed in the inside of propulsion mechanism by bolt, aluminium alloy electrically-controlled heat dissipation shell side is fixedly connected with connecting mechanism by bolt, connecting mechanism is clamped in power mechanism one end, and propulsion mechanism includes skeg, the inside fixed connection of skeg has motor cover, aluminium alloy motor cover shell is welded in motor cover side, connecting mechanism includes locking cap, locking cap inside is welded with clamping block, and block slot is set in clamping block side, power mechanism includes screw cap, and the inside fixed connection of screw cap has clamping plate, in the utility model, under the premise of compact lightweight easy maintenance, waterproof capacity and structural strength are considered, and the heat dissipation area multiplexing is realized through the connection of each component, the overheat hidden danger of battery and motor is solved.

The present application relates to the technical field of water jet propeller, and discloses a fish environmental protection type water jet propeller based on bionics, which comprises a water inlet pipeline, a water jet assembly is arranged on the water inlet pipeline, and the water jet assembly comprises a main shaft. In order to meet the dual requirements of ship propulsion and water ecological protection, the fish environmental protection type water jet propeller based on bionics is provided with the water jet assembly, the assembly drives the mounting shaft to rotate together with the main shaft, the spherical block and the conical block cooperatively drive the impeller and the propeller to run at high speed, and stable propelling water flow is formed; the straight groove, the connecting groove, the hollow drainage groove and the conical drainage groove of the drainage module constitute a closed loop flow channel, the high-energy water flow downstream of the nozzle is guided back to the inlet edge of the impeller and the propeller through the straight metal pipe and the drainage curved metal pipe, uniform backflow jet flow is formed on the surface of the blade, the bionic vortex screen is generated by the interference of the main flow, the rigid edge of the blade is covered, and small fish are guided to actively avoid.

The utility model discloses a water surface garbage cleaning device with underwater environment detection function, including ship body frame, and the through structure of ship body frame front and back has guaranteed the flow of water body, two buoyancy cabins are symmetrically set up in the both sides of ship body frame, and the propeller propeller of power source drive is set up respectively in two buoyancy cabin rear part, and the power device of two sides has had the function of propulsion and steering, and the collection unit is set up in the rear part of ship body frame, is used for collecting the floating material in the water body of flowing through ship body frame. The utility model has the advantages of controlling propeller propeller through the remote controller, and the ship body is controlled to move to the water surface floating garbage place, and the water surface floating garbage flows through the net bag of the collection and storage in the rear of ship body frame, realizes the water surface garbage cleaning, and the propeller propeller of two sides makes the whole have higher flexibility, and solves the problem that effectively operating is difficult in the narrow water area or near the place of the shore.