51 results about "Propeller" patented technology

An electric, inductively-energized, multi-bladed, controllable-pitch propeller hub is configured with an internal battery, electronic control unit and electric internal reversible hubmotor, when energized by a voltage inducted across an air gap into an annulus of receiver coils that is mounted onto said propeller hub and when said propeller hub is attached to and operated with complementary electrical, electronic and mechanical components that enable wireless command signals, together forming a novel and versatile device whose operation can provide near-instantaneous modulation of aircraft thrust, lift and drag by the action of said propeller hub to actuate precise and equal changes to the pitch of each propeller blade through a full range of useful pitch settings, both during rotation of said propeller hub and when said propeller hub is stationary, with an innovation including a coaxial driveshaft that facilitates the removal and installation of said propeller hub from a propmotor.

A near space propeller comprises propeller blades and propeller hub. Two propeller blades are connected through the propeller hub to form an integral structure; and the propeller blades have the following structure: chord length of 160-180mm and angle of attack beta of 31-34 degree at 0.3 elongation position; chord length of 140-160mm and angle of attack beta of 25-28 degree at 0.35 elongation position; chord length of 115-135mm and angle of attack beta of 18-21 degree at 0.45 elongation position; chord length of 95-110mm and angle of attack beta of 16-18 degree at 0.6 elongation position; chord length of 85-95mm and angle of attack beta of 14-16 degree at 0.7 elongation position; chord length 65-75mm and angle of attack beta of 13-14 degree at 0.75 elongation position; and chord length of 45-55mm and angle of attack beta of 12-13 degree at 0.9 elongation position.

The invention discloses an amphibious power propulsion device suitable for sea and air, comprising a frame type retainer, a tilting motor, a power motor fixedly arranged at the middle part of the retainer, as well as propellers for air and propellers for sea, which are coaxially and rotatably arranged at a certain interval, wherein the propellers for air are in driving connection with the power motor through a unidirectional rotation mechanism, the propellers for sea are in driving connection with the power motor, a rotating shaft of the tilting motor is fixed at the outer side of the retainer through a connecting plate, and the rotating axis of the tilting motor is perpendicular to the rotating axis of the propellers for air and the propellers for sea. The invention also provides an amphibious multi-axis aircraft suitable for sea and air. According to the amphibious power propulsion device and the amphibious multi-axis aircraft, the same motor is adopted to simultaneously adapt to two different working environments, namely in the air and under the water, thereby reducing the weight of the amphibious aircraft for sea and air and simplifying the structure of the aircraft; and meanwhile, the tilting motor is used for controlling the direction of power output, thereby increasing the maneuverability of the amphibious aircraft and strengthening the capability of the amphibious aircraft for finishing complex tasks.

The invention relates to a control method and a system of a helicopter rotor, which belongs to the technical field of helicopter operation. The control method is characterized in that the distance changing of a blade is realized by adopting an actuator positioned on the stinger of each propeller boss to drive a flap positioned at the rear edge of the blade, so as to realize the control of a rotor system. The system comprises a demountable flap (1) installed at rear edge of the blade, torque soft propeller bosses (14), an actuator (13) installed on the stinger of torque soft propeller bosses, a flap control mechanism (1) with one end being connected with actuator (13) and the other end thereof being connected with the flap (1), and a test control system (59). The control method and the system have the advantages that the screw piston of each blade can be independently controlled, the structure is simple, the weight is light, the controllability is good, and the reliability and the security are high.

The invention discloses a supporting device and a supporting method for machining a propeller blade. The supporting device consists of a base and a vacuum sucker component positioned on the base, wherein the base comprises a bottom vacuum sucker, a chassis, a hydraulic cylinder and a piston rod, the middle of the bottom of the chassis is connected with the bottom vacuum sucker, the middle of the top of the chassis is provided with the hydraulic cylinder, the bottom end of the piston rod extends into the hydraulic cylinder, and the vacuum sucker component comprises a limiting switch, a spring, a support, a mandril, a positioning screw and a top sucker. The propeller blade is analyzed and calculated to determine the area in which the supporting device is positioned. For the propeller blade with the diameter less than 4 meters, supporting points of the supporting device are distributed at five positions of the propeller blade; and for the propeller blade with the diameter more than 4 meters, the supporting points of the supporting device are distributed at seven positions of the propeller blade. According to the invention, supporting can be quickly completed, and the stiffness of the supporting device and a supporting effect of the propeller blade can be improved.

The invention provides a new method for automatically measuring the screw pitch of propeller blades, which takes an image as a basis to carry out non-contact automatic measurement of the screw pitch of the propeller blades. The method comprises the following steps: firstly, collecting the images of the propeller blades by utilizing equipment such as a computer, a projector, a camera and the like; acquiring a coordinate of a two-dimensional image coordinate system of all the projective points of the blades by taking a digital image processing technology as a basis; calculating a coordinate of a three-dimensional real-world coordinate system of all the projective points of the blades by utilizing a camera calibration model; and finally calculating the screw pitch of the propeller blades by utilizing the computer.

An enhanced counter-rotating electric motor and an associate propulsion system for use with a water-vehicle includes a motor housing, a stator within the housing that rotates about a central axis in one direction, an armature within the stator that rotates about the central axis in an opposite direction from the stator, a first axel that is secured to the stator and extends out from the housing, a second axel that is secured to the armature and extends out from the housing, water-tight rotational seals about each of the two axels, a centrifugal-force-balancing electrical connection mechanism that supplies functioning electrical communication between the motor and external electrical circuitry while operating the motor, and a propeller secured to each said axel.

The invention discloses an automatic throttle system of a screw propeller type transport aircraft. The system is cross-linked with an automatic pilot system and a mechanical engine control system, thus the control over the flight speed is realized, and requirements for control over speed stability and track angles during automatic flight especially in the low dynamic pressure situation are met. The system comprises a throttle servo controller, throttle actuators, a display control board, a quick break switch and the like. The system is simple, reliable, and convenient to operate.

The invention discloses an electric drive lifting unmanned flying platform. The electric drive lifting unmanned flying platform is characterized by comprising an electric drive lifting unmanned machine, wherein the electric drive lifting unmanned machine is connected with a ground power supply device through a transmission cable and is driven by the ground power supply device in a power-supply mode. Preferably, the ground power supply device is a power supply vehicle with a vehicle power supply. Continuous power supplying is conducted to the electric drive lifting unmanned machine through a ground power supply, and thus the power and the duration time of power supplying are guaranteed, and heavy articles can be lifted by relying on the lift force of a propeller. Moreover, the unmanned machine can conduct lifting operation within the length scope of the transmission cable, and can be flexibly applied to various occasions.

The invention discloses a net anchoring drill carriage which comprises a lower carriage frame and an upper carriage frame arranged on the lower carriage frame and further comprises a net anchoring mechanism. The upper carriage frame is provided with a drill arm seat, a drill arm arranged on the drill arm seat, and a drill rod propeller arranged on the drill arm. The net anchoring mechanism comprises a supporting arm assembly and a hanging net assembly. According to the net anchoring drill carriage, the net anchoring mechanism is arranged on the drill carriage, thus, when an net anchoring support needs to be arranged at the top of a roadway, the end of a steel wire net volume is connected with a horizontal support, and then the position of the horizontal support is adjusted through the supporting arm assembly to enable a steel wire net on the horizontal support is located at the top of the corresponding roadway; then the drill rod propeller is controlled by the drill carriage to conductdrilling among steel wire net holes; and finally, through the drill rod propeller, the drill rod is inserted into a drill hole, and the steel wire net is fixed to the top of the roadway through the anchor rod. According to the net anchoring drill carriage, the drill carriage is driven to travel along the roadway, thus, net anchoring operation is repeatedly conducted so that the net anchoring support can be quickly arranged in the roadway, the operation efficiency is high, and safety is good.

Provided is a six-rotor-wing agricultural plant protection unmanned aerial vehicle with propellers distributed in a cambered mode. An inner co-pole reversing-propeller part and an outer co-pole reversing-propeller part are formed by two pairs of rotor wings, the four rotor wings are distributed in a cambered mode and in mirror symmetry, and the rotating axes of the rotor wings are coplanar; a co-shaft reversing-propeller part is composed of a pair of rotor wings; a six-rotor-wing unmanned aerial vehicle structure with the left and right sides being in mirror symmetry and the front and rear sides being asymmetrical is formed through several carbon fiber pipes and connecting and fixing components, and rods are perpendicular to shafts; the direction of downwash airflow is regarded as the outward normal direction of cambered surfaces. Compared with a six-rotor-wing unmanned aerial vehicle with propellers distributed on a plane and arranged in a central symmetry structure in the market, the flow speed of the downwash airflow is effectively reduced, the area of the downwash airflow is enlarged, crops are protected, and operation efficiency is improved.

The invention discloses a chemical industry mechanical stirrer based on paddle wing barbs for organic silica gel. The chemical industry mechanical stirrer structurally comprises a gear box, a shaft driving motor, a conveying wheel belt, a cover balancing weight, a propeller stirring tank groove, a hydraulic cylinder rod and a material loading cylinder groove. According to the invention, the propeller stirring tank groove is matched with the material loading cylinder groove, so that the hook end block and the barb corn bending plate are matched to work to form linear rotary wire drawing; by matching with the twisting and hinging operation of the propeller, the granular sensation and the forming quality of the whole treated organic silica gel are high, the whole small fragments are uniform,the effect of rotary wire drawing is achieved, centripetal force operation is diffused, and the rotary floating action effect of the wire edge is formed; and the annular cutting effect is achieved through the bent knife supporting rod frame on the edge, so that the sealed rotary work of the isolation cover at the cap end of the axis rod is also guaranteed, the work rotary stirring efficiency is continuously guaranteed, the smooth annular track machining effect of chemical industry machinery is driven, and the high-performance machining effect of bottom loss is achieved along the inner tank barrel structure.

The invention relates to a high-intensity high-speed informationization manned spacecraft manufactured by new graphene materials and belongs to the technical field of applications of new materials and new energies. A propelling module, a propeller, a re-entry module, an orbital module, a butt joint mechanism, an egress hatch and a porthole of the manned spacecraft are manufactured by the new graphene materials, the strength of graphene mechanical parts is higher than that of titanium structure parts, small celestial bodies in the space and space junk are prevented from hitting against the spacecraft, and the surfaces of the graphene mechanical parts can inhibit bacteria; a conductor wire, a camera, a storage battery, a first graphene computer system, a first graphene communication system, a second graphene computer system and a second graphene communication system which are manufactured by the new graphene materials are capable of accelerating moving speeds of electrons in electric components and obviously improving working efficiencies of the electric components when compared with those manufactured by existing conducting materials. When the sun irradiates a graphene solar battery in the space, electricity currents are generated and rapidly and continuously transport the electricity to the graphene manned spacecraft through the graphene conductor wire.

The invention provides an intelligent underwater search and rescue robot which comprises an annular waterproof base. A rubber air bin is arranged on the waterproof base. A plurality of cameras are arranged on the circumferential outer wall of the waterproof base. Connecting rod structures are connected with the two sides of the base of the waterproof base respectively. Each connecting rod structure comprises a fixed rod. A connecting rod is hinged to the lower end of each fixed rod. A kinetic driving device is hinged to each connecting rod. Each kinetic driving device comprises a cylindrical cylinder. A rib plate is arranged on each cylinder and hinged to the corresponding connecting rod. A lithium ion battery and a propeller are arranged in each cylinder. A central controller and an air pressure adjusting device are arranged at the bottom of the waterproof base. The air pressure adjusting device is connected with a rubber air bin. Near-drowning situations are monitored through the cameras, once a near-drowning event happens, by adjusting the kinetic driving devices, the robot can rapidly reach the place below a drowner and rapidly adjust the air pressure value in the rubber air bin, the drowner is lifted according to the buoyancy principle, and the personal safety of tourists is guaranteed.

The invention discloses a full-revolving tugboat with a stern roller. The full-revolving tugboat with the stern roller comprises a boat body, a water distribution hammer, a full-revolving propeller, a crank arm telescopic crane and a towing engine, wherein the water distribution hammer is arranged at the center of the bottom of the boat body and is through longitudinally, the full-revolving propeller is positioned below a stern, the crank arm telescopic crane is arranged on a cabin of the boat body, the towing engine is arranged in the middle of a deck of the boat body, the stern roller is arranged in the middle of the stern, and rope blocking devices are arranged on two sides of the stern. When the full-revolving tugboat tows an oil platform or underwater anchor chain, one end of a steel wire rope on the towing engine is connected with the oil platform or underwater anchor chain under the guide of the stern roller. The stern roller having a guide function is additionally arranged in the middle of the stern, therefore, the structure is simple, the operation is convenient, and the application range of the full-revolving tugboat is enlarged. The stern roller is arranged on the inner side of a rubber fender of the stern, therefore, rigid collision between the stern roller and other objects is avoided, and the rope blocking devices can prevent the steel wire rope from sliding to the stern to damage the boat structure when the boat swerves.

The invention relates to the technical field of fishery culture, and specifically discloses an automatic feeding device for fishery culture, wherein the automatic feeding device includes a support box, a foodstuff box, a stirring device, a two-shaft extension motor, conveying cylinders, screw conveying propellers, a swinging conveying cylinder, a blast blower, a driving motor and a swinging sleeverod. Two conveying cylinders are equipped with the screw conveying propellers, and the feeding end of each conveying cylinder is connected with the discharge end of the foodstuff box through a material dropping port, and the discharge end of each conveying cylinder is connected with the top of a hollow support rod; the middle of the swinging conveying cylinder is connected with the bottom end ofthe hollow support rod, the outer end of the swinging conveying cylinder is provided with a spray port, and the other end of the swinging conveying cylinder is internally provided with a gas jet nozzle; the driving mechanism is also arranged in the support box. High-speed airflow continuously blows foodstuff out, and the material scattering is achieved; through the arrangement of the driving mechanism, the uniformity of the material scattering is greatly improved, the effect of fishery culture is ensured, the manual labor intensity is reduced, and the device is suitable for promotion and use.

The invention discloses textile cloth integrated bleaching equipment. The textile cloth integrated bleaching equipment comprises a bleaching tank, a bleaching chamber, a washing chamber, a drying chamber and a blower, wherein the bleaching tank is mounted in the bleaching chamber, a cloth guide barrel is mounted in the bleaching tank, a cloth inlet is formed in the portion, on one side of the bleaching tank, of the outer wall of the bleaching chamber, and the washing chamber is formed in the side, away from the cloth inlet, of the bleaching chamber; a booster pump is mounted in a top plate ofthe washing chamber, a sprayer is mounted at a water outlet end of the booster pump through a water spray pipe, electric propellers are mounted on the inner walls of the two sides of the washing chamber, the drying chamber is formed in the outer side, away from the cloth inlet, of the washing chamber, and a cloth outlet is formed in the side, away from the cloth inlet, of the drying chamber. According to the equipment, through the installed cloth guide barrel and the bleaching tank, the damage to the human body caused by direct contact between workers and a bleaching agent is avoided; the whole bleaching process of textile cloth is completed at a time, so that the manpower cost is greatly reduced, and the working efficiency is improved.

The invention discloses an energy-saving filling machine based on Internet of Things and capable of realizing uniform filling. The energy-saving filling machine comprises a storage barrel, wherein a liquid separation mounting table is fixedly connected with the bottom side of the storage barrel and connected with a filling valve through a clamping mechanism; the side, deviated from the storage barrel, of the liquid separation mounting table is fixedly connected with a main support rod; the end, away from the liquid separation mounting table, of the main support rod is fixedly connected with afilling platform; the side, deviated from the main support rod, of the filling platform is fixedly connected with a base; traveling mechanisms are symmetrically arranged on the bottom side of the base; mounting grooves are symmetrically formed in the base. A first rotating shaft is driven by a drive motor to rotate, so that a first gear drives second gears on two sides to enable second rotating shafts to rotate, third rotating shafts start to rotate under transmission of transmission devices, propellers are driven to rotate by rotation of the second rotating shafts and the third rotating shafts and stir raw materials on the bottom layer continuously, so that raw material density is more uniform, and quality of filled products is improved.

The invention discloses an unmanned aerial vehicle. The unmanned aerial vehicle comprises a main rack, an upper driving mechanism, a lower driving mechanism and an angle adjusting mechanism, wherein the upper driving mechanism is arranged on the upper portion of the main rack and is provided with a first propeller; the lower driving mechanism is arranged on the lower portion of the main rack and is provided with a second propeller, and the second propeller and the first propeller are of a forward and reverse paddle structure; the angle adjusting mechanism is arranged in the main rack and movably connected with the lower driving mechanism, and the axial angle of the lower driving mechanism is adjusted so as to change the air blowing direction of the second propeller. The unmanned aerial vehicle has the advantages that hovering, steering and forward acceleration flying can be realized, and the flying action is flexible; the horizontal width of the unmanned aerial vehicle is small, and the unmanned aerial vehicle can fly in a narrow area.

The invention relates to a small mounted-type underwater robot platform device which is a high-controllability external mounted-type small underwater platform device, and belongs to the field of underwater defect detection, submarine cable damage detection, detection of underwater pipeline damage specific positions and the like of an offshore oil platform. According to the technical scheme, the platform device is composed of a turtle-like shell, an underwater propeller, a function mounting system, a camera shooting system and a signal processing and analyzing transmission system, wherein the turtle-like shell is connected with a main body support through a semi-spherical shell and screw holes C, and an internal umbilical cord thread is led out through a flange head of the main body support; a main signal processing and transmission system is arranged inside the semi-spherical shell of the underwater robot platform, a slave signal processing and transmission system A is arranged insidean external mounting part A, and a slave signal processing and transmission system B is arranged inside an external mounting part B. The platform device is simple in structure and easy to maintain; and due to the external mounting type design and miniaturization design of the function mounting system, the applicability of equipment is improved.

A gulf stream electric generator including a first funnel, a second opposite funnel, a propeller, and an electric turbine. The first funnel is a funnel and is placed such that the narrow end connects to an elongated tube. The second funnel is connected to a second end of the elongated tube such that the narrow end is connected to the tube. A propeller is placed within the elongated tube. The propeller is operable coupled to an electric turbine generator. The electric turbine will create an electric charge and send it to a power station for distribution.

The invention belongs to the technical field of ships, and particularly relates to a water surface floating oil recovery ship which comprises a deck. A baffle is arranged at the upper end of the deck,a storage plate is fixed at the lower end of the deck, a buoyancy device is fixedly connected to the lower end of the storage plate, a water pump is fixedly connected to the middle of the storage plate, an inlet of the water pump communicates with an oil inlet pipe, and an outlet of the water pump communicates with an oil outlet pipe. A storage tank is arranged on the storage plate, the storage tank can move on the storage plate, a sliding groove is formed in the storage plate, a sliding block is arranged in the sliding groove, the sliding block is fixedly connected with a sliding plate, thestorage tank is arranged on the upper portion of the sliding block, a propeller is arranged at one end of the storage plate, and the propeller is driven by a driving device on the storage plate. Floating oil on the water surface can be well collected.