347results about "Rotary propellers" patented technology

The invention provides a water-air two-domain self-adaptive state switching efficient propelling folding propeller, which comprises a propeller hub, a propeller blade, a propeller blade, a propeller blade and a propeller blade, the N fixed paddles are uniformly distributed on the side wall of the cylinder in the circumferential direction; the inner sides of the fixed paddles are fixedly connected with the outer surface of the side wall of the cylinder; the fixed blades are arranged along the water pushing direction; the outer side of the fixed paddle is bent upwards, and a connecting plate is arranged at the end part of the outer side; the N folding and unfolding paddles are correspondingly mounted at the outer ends of the fixed paddles, and each folding and unfolding paddle comprises a blade and a root ring fixedly connected with the root of the blade; the N rotating joints comprise pin shafts, and the pin shafts penetrate through the connecting holes and the root ring; wherein N is greater than or equal to 3; when the propeller hub rotates and is located above the water surface, the folding and unfolding blades are unfolded under the action of centrifugal force; and when the paddle is located below the water surface, the folding and unfolding paddle is folded under the action of water resistance. The efficient propelling folding paddle has sufficient propelling power in water and is high in water-air transition efficiency. The invention also provides an unmanned aerial vehicle equipped with the efficient propelling folding paddle.

The invention relates to an array type underwater propeller with high maneuverability and low energy consumption, a pump jet generating device and a flow divider jointly form a propeller front end, an intelligent fluid director forms a propeller rear end, and the pump jet generating device drives an impeller through a rotating motor to drive surrounding water flow to rotate to generate a main jet flow; an isolation structure is arranged in the flow divider and used for evenly dividing the main jet flow into multiple strands of independent sub jet flows, and all the sub jet flows form propelling power after entering the intelligent flow guider to be guided. The intelligent fluid directors are connected with the flow channels of the flow divider in a one-to-one correspondence mode and used for converting fluid flowing out of the flow divider and out of the jet flow face into effective action jet flow with the adjustable flow speed. The intelligent fluid director comprises a jet flow end regulation and control mechanism and a pressure relief end regulation and control mechanism, and the jet flow end regulation and control mechanism is used for independently regulating the flow speed of effective jet flow ejected from the fluid director; and the pressure relief end regulation and control mechanism is used for maintaining the constant flow velocity at the inlet of the fluid director by releasing part of water flow when the effective jet flow velocity is regulated.

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 provides a blade-fused full-rotation shaftless rim propeller, and relates to the technical field of propellers, the blade-fused full-rotation shaftless rim propeller comprises a propeller body, the propeller body comprises a propeller shell, a first driving mechanism and a blade assembly, and the propeller shell is provided with a cylindrical mounting shell and a containing space located on the inner side of the mounting shell; the first driving mechanism comprises a stator assembly and a rotor assembly which are coaxially arranged on the inner side of the accommodating space; the paddle assembly comprises a plurality of main paddles and a plurality of auxiliary paddles, the main paddles are evenly distributed along the inner circumference of the rotor assembly, the guide edges of the main paddles are of zigzag bionic structures, the auxiliary paddles are located between the adjacent main paddles, the chord length of the auxiliary paddles is 30%-50% of the chord length of the main paddles, and the front edges of the auxiliary paddles are arranged close to the guide edge sides of the main paddles. Through the collaborative design of the main paddle and the auxiliary paddle, the sawtooth-shaped guide edge is used for damaging the vortex continuity, the auxiliary paddle guides secondary flow and inhibits pressure fluctuation, and the technical problems that a traditional propeller is high in noise, low in efficiency and disordered in flow field in a closed flow channel environment are solved.

The invention provides a flap propeller which comprises a propeller hub, a propeller shaft connected with one end of the propeller hub and a plurality of blades arranged on the propeller hub and evenly arranged at intervals in the circumferential direction of the propeller hub, a mounting groove is formed in the side, facing the adjacent blade, of each blade, and a flap is arranged in each mounting groove. The flaps are rotationally connected with the corresponding blades and / or the propeller hubs; the flap propeller further comprises a rotation driving assembly, and the rotation driving assembly is arranged on the propeller hub and connected with the flap so as to drive the flap to rotate relative to the propeller blades. The device can adapt to various navigation working conditions, reduces the loss of ship energy and inhibits the cavitation phenomenon.

The shaftless propeller comprises a motor shell, a rotating cylinder, the hub-free guide vane, a steering nozzle and a sealed bearing assembly, the motor shell coaxially sleeves the rotating cylinder, an annular motor used for driving the rotating cylinder to rotate is arranged between the motor shell and the rotating cylinder, and the hub-free guide vane is arranged between the motor shell and the rotating cylinder. The rotating cylinder comprises a plurality of blades arranged on the inner wall of the rotating cylinder and a distance adjusting mechanism used for changing the pitch of the blades in the operation process, and the hub-free guide vane is fixedly arranged at a water inlet in the front end of the rotating cylinder and used for conducting pre-rotation rectification on water flow entering the rotating cylinder so as to counteract the circumferential induced speed generated by the rotating cylinder. The steering nozzle is arranged at the outlet end of the rotating cylinder and can be driven to deflect around the axis so as to change the jet flow direction, and the sealing bearing assembly is arranged between the motor shell and the rotating cylinder and used for supporting the rotating cylinder and preventing fluid from invading the interior of the motor shell; the propulsion efficiency can be improved, the vibration noise can be reduced, and the steering function can be integrated.

The invention discloses a ship propeller energy-saving rectifying device with diversion wings, and particularly relates to the technical field of ships, the ship propeller energy-saving rectifying device comprises a ship body, a driving rod is arranged at the rear end of the ship body, a propeller is arranged at the rear end of the driving rod, and a plurality of diversion wings are fixedly installed on the outer wall of the driving rod in an annular array mode. An L-shaped fixing support is arranged above the driving rod, the L-shaped fixing support is installed on the rear side of the ship body, a rectifying mechanism is installed at the bottom end of the vertical position of the L-shaped fixing support, the rectifying mechanism comprises an annular flow guide cover, and the propeller is located on the inner side of the annular flow guide cover. According to the ship propeller energy-saving rectifying device with the flow guide wings, through the synergistic effect of the flow guide wings and the rectifying mechanism capable of being dynamically adjusted, the inflow condition of the disc face of the propeller is improved, pre-rotation and non-uniformity of water flow are effectively weakened, and therefore the propelling efficiency of the propeller is improved, and fuel consumption and operation cost are reduced.

The variable-configuration multi-purpose robot comprises a robot body and the wheel-claw-paddle composite mechanism, the robot body comprises a robot body, an upper cover plate and two side plates, the upper cover plate is fixed to the robot body, and the two side plates are rotatably arranged on the two sides of the cover plate through two hinges correspondingly; the hinge is a rotary damping adjustable hinge; the wheel-claw-paddle composite mechanism is allowed to be switched between a wheel-claw-paddle state and a wheel-type state, the wheel-claw-paddle composite mechanism is arranged on the side plate so that the side plate can rotate and be locked relative to the upper cover plate within a set angle range, and then the whole machine can be switched among a flight mode, a ground mode and a water surface mode. The device can adapt to water, land and air triphibian environments at the same time and is integrated with light-weight design.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

A ship propulsion machine (1) includes a propeller (2), an engine (4) configured to rotate the propeller (2), the engine (4) serving as a first power source, a motor (17) configured to rotate the propeller (2), the motor (17) serving as a second power source, an inverter (19) configured to control driving of the motor (17), an engine drive shaft (21) connected to a crank shaft (6) of the engine (4), a motor drive shaft (22) connected to an output shaft (18) of the motor (17), a transmission shaft (23) connected to a propeller shaft (3) provided with the propeller (2), and a power switching mechanism (24) configured to switch a connection mode of the engine drive shaft (21), the motor drive shaft (22), and the transmission shaft (23) to switch a power source for rotating the propeller (2) between the engine (4) and the motor (17).

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.

An end cap for guiding an exhaust gas flow of a boat engine. The end cap is configured to be attached onto a propeller nut of the boat engine. The end cap including: a base body having a bottom surface, a lateral surface and a tip, the tip and the bottom surface being spaced apart from each other in a longitudinal direction of the base body. The lateral surface extends from the bottom surface and converges in the tip. The bottom surface having a recess for receiving the propeller nut; and at least one exhaust gas-guiding structure extends helically along the lateral surface.

A variable toroidal propeller (10) is proposed, comprising a hub (12) and toroidal propeller blades (14) connected to the hub (12). The hub (12) is configured to operably couple the blades (14) to an actuator (44), and the blades (14) are configured to deform when the actuator (44) is operated.

The utility model discloses a quickly fixed paddle board propeller which comprises a driving motor, a rotating seat is arranged on an output shaft of the driving motor, a plurality of paddles are movably connected to the rotating seat, and a quick fixing assembly is arranged at the rear end of the driving motor. The rapid fixing assembly comprises a fixing base fixed to the rear end of the driving motor, a clamping plate arranged behind the fixing base at intervals, and an elastic belt connected between the fixing base and the clamping plate. The utility model has the advantages that the installation is simple and convenient, and the resistance in a non-propulsion state can be effectively reduced.

A kind of assembly method of paddle hub, the method includes the following steps: first step: repair sliding block inner hole, the gap value of the outer circle of crank pin on crank disc and inner hole meets the inspection standard;Second step: repair sliding block and the sliding block groove on piston rod, so that it meets the requirement;Repair groove sliding block or sliding block groove until the gap value meets the inspection standard;Third step: the paddle shell is connected with hollow support, then install crank disc, fix the crank pin on the upper end of crank disc, then sliding block is sleeved on the outer circle;Fourth step: piston rod drops into the paddle shell, after sliding block enters sliding block groove, make the vertical movement stroke of sliding block and crank pin be synchronous with piston rod drop, piston rod stops descending after descending to appropriate position, then fix crank disc;Fifth step: other parts in the assembly of paddle hub.The design sets the test index between crank pin, sliding block and piston rod to improve the operation accuracy of mechanism.Therefore, the assembly quality of the paddle hub of the design is high.

The utility model discloses an offset type propeller front energy-saving device which comprises an offset type circumferential guide vane and a plurality of radial guide vanes, the offset type circumferential guide vane is provided with an offset circle center, the offset circle center deviates from the axis of a propeller, and the radial guide vanes are arranged at intervals in the circumferential direction and fixedly connected with a ship body. The offset type circumferential guide vane is located above the horizontal plane where the axis of the propeller is located and does not exceed the boundary swept by the outer edge of the rotating propeller; when the propeller is a right-handed propeller, the offset circle center is located on the upper left portion of the axis of the propeller, and the offset type circumferential guide blades are arranged in the mode that the whole offset type circumferential guide blades deflect towards the upper left portion. Or when the propeller is a left-handed propeller, the offset circle center is located on the upper right portion of the axis of the propeller, and the offset type circumferential guide blades are arranged in the mode that the whole offset type circumferential guide blades deflect to the upper right portion; the left upper direction and the right upper direction are defined by the view angle of the ship advancing direction. The device acts on water flow and adjusts the direction of the water flow to reduce eddy current and energy loss, so that the propeller can operate under more ideal conditions.

The application provides a scalable propeller hub cap fin for a ship, and belongs to the field of ship propulsion. The application solves the problem of poor energy-saving effect of a traditional cap fin in the whole voyage. The application comprises a propeller hub, a plurality of blades which are uniformly distributed on the propeller hub, a propeller hub cap which is arranged at the rear end of the propeller hub, a plurality of fin blades which are arranged one by one and correspond to each blade, all the fin blades are in sliding connection with the propeller hub, and a hydraulic adjusting device which is arranged in the propeller hub cap and is used for driving each fin blade to extend out of the propeller hub or retract. The application is mainly used for changing the running state of the propeller.

The utility model discloses a surfboard high-speed paddle structure, which belongs to the technical field of surfboard paddles, and comprises a shaft connecting sleeve, three groups of paddles are arranged on the outer side surface of the shaft connecting sleeve in an annular array manner, and drainage grooves are formed in the upper and lower sides of the connecting surfaces of the three groups of paddles and the shaft connecting sleeve; the front end of each drainage groove extends out of the front end of the corresponding paddle by one section, and the rear end of each drainage groove is flush with the rear end of the corresponding paddle. The drainage grooves can overflow a part of vortex rotating along with the blades, so that the resistance of the blades during rotation is reduced, the rotation speed of the blades is higher, the drainage grooves are arranged on the three groups of blades, the mutual influence among the blades is effectively reduced, the rotation of the blades can break through the original speed limitation, and the rotation speed of the blades is improved. And a faster speed is provided for the surfboard.

The utility model discloses a paddle antifouling device based on an ultrasonic module, which comprises a double-paddle propeller and an ultrasonic cleaning device arranged in a ship body, two symmetrical direction adjusting blades swinging independently are arranged at the tail end of the double-paddle propeller, and a swinging antifouling blade is further arranged at the tail end of the ship body. The top of the antifouling blade is linked to an ultrasonic cleaning device in the ship body through a rotating shaft, a cavitation groove and an impact groove which are symmetrical are formed in the two side faces of the antifouling blade, an electrically-controlled rotating paddle is arranged in the cavitation groove, and an ultrasonic generator is arranged in the impact groove. After the ultrasonic cleaning device is improved, the damage to the propeller is reduced; ultrasonic waves are transmitted into water by taking the rotating paddle on the antifouling blade as a medium to cause vibration, so that a cavitation phenomenon is generated, bubbles after being buffered are broken and attached to the surface of the propeller, and the damage is smaller; the antifouling blades can also play a certain role in propelling and redirecting the ship body; and the propeller is additionally cleaned under the assistance of direct-flushing sound waves or high-pressure water flow.

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

The application discloses a longitudinally foldable water-air dual-purpose propeller, and belongs to the technical field of cross-medium aircraft propulsion, comprising a new-configuration hub, a longitudinal folding mechanism, a limiting structure and a down-bending propeller blade with a preset down-bending angle; the configuration of the propeller enables the down-bending propeller blade to be completely unfolded to form a first working configuration through centrifugal force in air, and the down-bending propeller blade to be passively folded and limited to form a second working configuration through hydrodynamic lift in water; the longitudinally foldable water-air dual-purpose propeller can automatically complete mode switching according to the difference between working media without any active control mechanism, and can maintain high efficient propulsion performance in both media.

Described herein is a rotor blade assembly (100) and a method for generating a lift in a fluid installation. The rotor blade assembly includes an arcuate rotor blade (102) that is configured to be rotated about its axis Y. One or more motion transmitting members (106, 114, 116) are provided that connect the arcuate rotor blade with at least one power generating member (104) for transmitting torque from the arcuate rotor blade to the at least one power generating member (104). The fluid incident on the arcuate rotor blade is caused to flow over a first leading edge L1 of a rotor blade towards a central rib R of the rotor blade (102). This fluid flow is then caused to flow along the central rib R of the rotor blade towards a stem section of the rotor blade from where the fluid exits, thereby causing rotation of the rotor blade.

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.

The invention discloses a propeller hub of a marine water-based hydraulic controllable-pitch propeller device. The propeller hub is fixedly connected with a propeller shaft through a shaft flange bolt and is fixedly connected with an oil cylinder through a propeller hub body and an oil cylinder screw; the pistons are connected with propeller shafts through piston rods; the blades are fixedly connected with the crank disc through blade root screws; a cavity A is formed between the left side of the piston and the oil cylinder, a cavity B is formed between the right side of the piston and a supporting base of the propeller hub body, a cavity C is formed between a sliding block disc of the piston rod and a propeller shaft, a blade root bearing is arranged on the blade, the crank disc and a blade root hole part of the propeller hub body and is made of a water-lubricated composite material, and the end face, matched with the propeller hub body, of the crank disc is subjected to ceramic spraying cladding. The piston and the oil cylinder are sealed by adopting a GSF glyd ring adaptive to a water medium; a reversing stop device is arranged in the piston; and discharge holes are respectively formed in the propeller hub body and the crank disc. The device is applied to a water medium hydraulic controllable-pitch propeller device, pollution caused by leakage of a mineral hydraulic oil controllable-pitch propeller device is thoroughly solved, and the sealing requirement of the device is lowered.

A marine vessel and a method of operating the marine vessel. The marine vessel comprises a power generation system comprising a nuclear reactor and a generator. The nuclear reactor is coupled with the generator to generate electricity. The marine vessel may also include a propulsion system including an engine and a propeller that receives torque from the engine to move the hull through a body of water surrounding the hull. The marine vessel may be part of a temporary power system having a cable that electrically connects the generator with an onshore power distribution system. A plurality of buoys may support the cable between the marine vessel and the onshore power distribution system. A method of operating the marine vessel may include starting the nuclear reactor while the marine vessel is sailing and maintaining the nuclear reactor in a standby state.

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 utility model relates to the technical field of underwater robots, in particular to a propeller composite wheel with a convertible underwater motion state for an observation and maintenance robot. A propeller outer wheel is installed outside the pressure-resistant hub, a buoyancy adjusting device is installed between the propeller outer wheel and the pressure-resistant hub, a sealing partition plate is installed in an inner cavity of the pressure-resistant hub, air holes are formed in the surface of the pressure-resistant hub, the buoyancy adjusting device is communicated with the first sealed cabin through the air holes, and an exhaust pump is installed in the first sealed cabin; a driving motor is mounted in the second sealing chamber, gas between the buoyancy adjusting air bag and the first sealing chamber in the pressure-resistant hub is exhausted through the exhaust pump, the size of the buoyancy adjusting air bag is changed, and rapid and repeated adjustment of'zero buoyancy-negative buoyancy 'of the propeller composite wheel is achieved. The underwater robot can be used as a propeller, a roller and a walking foot so as to adapt to a complex underwater operation environment, so that underwater observation and maintenance operation are completed, and the environment adaptability is high.

The present invention relates to propeller systems that may be used to move fluid / gas masses in a certain direction and to levitate air vehicles by way of employing the vector force occurring meanwhile and to move in every direction, to move marine vessels in every direction and to carry fluid / gas masses from a point to another point. It relates to an electromagnetic propeller system and operation thereof, which does not comprise carrying or power transferring components such as shaft or bearing at the center of the propeller, in which the propeller blades are placed towards the propeller center from outside to inside, has an opening in a variable size at the propeller center and can move more fluid / gas masses by consuming less energy by way of employing the drag force of the fluids such fluid / gas by means of said opening at the propeller center.

The utility model provides a new energy leisure ship, which is characterized by comprising a ship body, a ship body, a ship body and a ship body, the ship body is made of light materials and comprises a cabin bottom and a deck, and at least part of the cabin bottom and at least part of the deck define a containing space. The power system comprises an oar and a motor which are arranged in the containing space, the oar is provided with a rotatable oar blade, the oar blade is located on the outer side of the cabin bottom, and the motor is in transmission connection with the oar to drive the oar blade to rotate; the energy system comprises a power supply arranged in the accommodating space and a power generation device arranged on the deck, and the power generation device is electrically connected with the power supply; the power generation device is configured to generate power using natural resources including light energy and / or wind energy. By arranging the power generation device, natural resources can be utilized to generate power, electric energy is supplemented in real time during sailing, the cruising ability is further improved, and meanwhile carbon emission is avoided.

The invention relates to a water sport device, in particular a foilboard, comprising a floating body (4), preferably in the form of a floating board, and a foil device (6) which is secured to the floating body (4) by means of a retaining device (8), wherein the foil device (6) arranged on a link (10) of the retaining device (8) has at least one, preferably at least two foils (16), and the foil device can be transferred via the retaining device (8) from an idle and / or starting position close to the floating body (4) into an operating position below the floating body (4), wherein, in the operating position and during a forward movement, due to an uplift force caused by the foil device (6), the floating body (4) can be transferred into a position in which it is spaced apart from the surface of the water, wherein at least one propulsion device (50) is provided which has at least one motor designed preferably as an internal rotor, which can be controlled by means of a control unit and which is provided for propelling the water sport device and designed in particular at least partially as part of the foil and / or retaining device (6, 8) or arranged on one of these or between these.