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59 results about "Centripetal force" patented technology

A centripetal force (from Latin centrum, "center" and petere, "to seek") is a force that makes a body follow a curved path. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path. Isaac Newton described it as "a force by which bodies are drawn or impelled, or in any way tend, towards a point as to a centre". In Newtonian mechanics, gravity provides the centripetal force responsible for astronomical orbits.

Machining and positioning tool for thin-wall annular workpiece

A placing seat is fixed to the upper portion of a base through a plurality of supporting columns in a suspended mode, a plurality of linear sliding grooves distributed in an annular array mode are formed in the placing seat, and an inner supporting piece and an outer pressing piece are installed in each linear sliding groove; a clamping push plate is connected between the multiple supporting columns in an up-down sliding and sleeving mode, a plurality of pushing pieces are installed on the clamping push plate, the pushing pieces are in sliding connection with the inner supporting piece and the outer pressing piece, and a plurality of position adjusting mechanisms distributed in an annular array are installed below the containing base in a sliding mode; a plurality of inner supporting pieces and outer pressing pieces which are distributed in an annular array mode are arranged above the containing base, two positioning rollers on the inner supporting pieces and the outer pressing pieces can synchronously move in the opposite directions from the inner side and the outer side, the inner wall and the outer wall of a workpiece are clamped at the same time, clamping force appears in pairs, radial force is offset, the workpiece mainly bears uniform centripetal force, and the deformation risk is greatly reduced.
Owner:SHUIXING TECHNOLOGY (JIANGSU) CO LTD

Metal radial elastic sheath for ceramic sliding bearing under high-temperature working condition

The invention belongs to the technical field of sliding bearings and protection thereof, and discloses a metal radial elastic sheath for a ceramic sliding bearing under a high-temperature working condition, and the sheath comprises an inner sheath and an outer sheath; the inner sheath sleeves the periphery of the ceramic bushing, is a thin-wall metal sleeve, and is provided with a plurality of spiral openings in the circumferential direction, so that the inner sheath generates elastic bending when being stressed in the radial direction and disperses stress in the annular range; the outer sheath is sleeved on the periphery of the inner sheath, helical teeth are uniformly distributed on the inner circumferential surface of the outer sheath, and the helical teeth apply centripetal acting force to the inner sheath through radial elastic deformation under assembly and high-temperature working conditions. Through flexible deformation of the spiral opening of the inner sheath and radial elastic pre-tightening fit of the helical teeth of the outer sheath, fastening fit can be maintained when a thermal expansion difference exists between the metal bearing seat and the ceramic bushing, stress concentration of the ceramic bushing is reduced, and the risk of axis drift is reduced.
Owner:DALIAN LUOLAN PUMP MFG

Centripetal force sensor and use method thereof

The invention discloses a centripetal force sensor and a using method thereof, and belongs to the field of sensors. According to the technical scheme, the centripetal force sensor comprises a fixed part and a rotating part, the rotating part comprises a sensor shell, the sensor shell is hollow, a center signal column is fixedly installed in an inner cavity of the sensor shell, a plurality of notches are formed in the outer circumferential face of the center signal column, and mass blocks are placed in the notches; piezoelectric ceramics are arranged on the outer side of the mass block, and the piezoelectric ceramics and the mass block are clamped between the inner wall of the sensor shell and the outer wall of the center signal column. The sensor is directly installed at the rotation center of a detected object, additional centrifugal force generated by the mass of the sensor approaches to zero, the authenticity of the detection result is greatly improved, meanwhile, the sensor is in direct conductive contact with the signal output structure through the center signal column, the mouthpiece does not rotate along with the detected object, and the detection accuracy is improved. The winding and pulling faults of the mouthpiece and an external pipeline are completely eradicated, and the durability of the sensor is improved.
Owner:SHANDONG LIANS INTELLIGENT TECH CO LTD

Method for coating products

A method for coating products is provided. The method includes the steps of applying a coating liquid to a product and removing excess coating liquid from the product. It is desirable to provide a method for efficiently and reliably coating delicate or easily deformable products, such as products molded from a pulp fiber slurry. The method includes fixing the product to a receiving portion of a product carrier that is configured in the same shape as the product, such that an exterior surface of the product abuts the interior concave surface of the receiving portion of the device. A coating liquid is applied to the product in the product carrier. The product carrier is affixed to a centrifuging device and the coating liquid is dispersed over the surface of the product using centripetal force.
Owner:PAPACKS SALES GMBH

An ultra-high energy density superconducting flywheel energy storage system with additional centripetal force device

The application belongs to the field of flywheel energy storage, and particularly relates to a super-high energy density superconducting flywheel energy storage system containing an additional centripetal force device, aiming at solving the problem that the flywheel rotation speed is limited by the strength of the material itself. The application comprises a vacuum cavity, a driving device, a flywheel, an additional centripetal force providing device and a high-temperature superconducting magnetic suspension bearing. The driving device is in transmission connection with the flywheel, and the additional centripetal force providing device is arranged outside the flywheel. The additional centripetal force providing device can provide additional centripetal force to the flywheel, so that the rotation speed of the flywheel can be higher than the limit rotation speed determined by the limit strength of the flywheel material itself, thereby breaking the problem that the flywheel rotation speed is limited by the material strength, and enabling the superconducting flywheel energy storage system to realize super-high energy density energy storage.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Distributed high-fidelity simulation system for large-scale high-speed AUVs based on real disturbance data

A distributed high-fidelity simulation system for large-scale high-speed AUVs based on real disturbance data is proposed. Through a large-scale AUV virtual test vehicle subsystem, the system simulates the motion state of a real large-scale high-speed AUV physical prototype under the interaction of rigid body inertia, gravity, buoyancy, inertial hydrodynamic forces, centripetal force, Coriolis force, drag, thrust, rudder force, and external environmental disturbances. Collision attributes are added to the prototype through a physics engine. The system also utilizes an underwater 3D virtual environment subsystem to render a large-scale underwater environment, build dynamic and static obstacle visualization models, and simulate the generation of realistic ocean currents and wave disturbances with high fidelity. The simulation presents a realistic underwater environment for a large, high-speed AUV. A motion solution subsystem describes the transformation relationships between the fixed coordinate systems of all objects in the underwater virtual environment and solves the motion equations of the large AUV, synchronously updating its pose and velocity states. A data management subsystem manages various data generated during the simulation, supporting write and read data operations, and also manages and coordinates data communication between nodes, supporting receive and send data operations. A visualization subsystem loads and dynamically displays the underwater 3D environment and the large AUV virtual test vehicle model, synchronously updating real-time data curves and visualizing the AUV's motion trajectory.
Owner:SHANGHAI JIAOTONG UNIV

Modularized middle school physical mechanics experiment measurement and control system and centripetal force experiment method

The invention discloses a modularized middle school physical mechanics experiment measurement and control system and a centripetal force experiment method, and belongs to the technical field of middle school physical experiment teaching equipment. The measurement and control system comprises a rotation and speed measurement module and a tension measurement module which can work independently and can also be combined flexibly, the rotation and speed measurement module takes an STM32 single-chip microcomputer as a core, and accurate measurement and control of the rotation speed are realized through Hall encoder orthogonal pulse acquisition, quadruplicated frequency processing and M-method speed measurement; the tension measurement module realizes accurate acquisition of tension through a tension sensor and a 24-bit high-precision AD conversion chip. Modularization and modularization design is adopted in the core of the device, the two modules can independently adapt to various mechanical experiments and can also be integrated to build a centripetal force experiment platform, and verification of a centripetal force formula is completed through a matched experiment method. The problems that traditional experimental equipment is poor in universality and complex in operation are solved, the scheme is simplified and focused, and extremely high practicability and patent authorization are achieved.
Owner:陈志杰

Magnetorheological fluid joystick system for work vehicles capable of operating in modified centripetal mode

The present disclosure relates to a work vehicle magnetorheological fluid joystick system that can operate in a modified centripetal mode. The work vehicle magnetorheological fluid (MRF) joystick system includes: a joystick device, an MRF joystick resistance mechanism, and a controller architecture. The joystick device further includes: a base housing, a joystick movably mounted to the base housing, and a joystick biasing mechanism, which is connected to the joystick and applies a centripetal force to urge the joystick to return to the neutral position when the joystick is moved away from the neutral position. The controller architecture is capable of operating in a modified centripetal mode, wherein the controller architecture: (i) determines when the joystick begins to return toward the neutral position due to the centripetal force applied to the joystick by the joystick biasing mechanism; and (ii) when so determined, issues a command to the MRF joystick resistance mechanism to modify the rate at which the joystick returns to the neutral position by changing the MRF resistance applied to the joystick.
Owner:DEERE & CO

Spinning Toy That Contains Dissimilar Fluids

PendingUS20260001003A1TopsRotational axisPhysics
A spinning device, such as a top, that can selectively spin about a central axis of rotation. The spinning device has a body that contains a fluid chamber that is visible through at least part of the body. A plurality of liquids are held within the fluid chamber. Some solid objects can also be mixed within the liquids. At least some of the plurality of liquids have different densities. Accordingly, when the spinning device spins about a central axis of rotation, centripetal forces are generated that cause at least some of said plurality of liquids to migrate to different distances from the central axis of rotation. At least some of the liquids are different colors and are insoluble with one another. Accordingly, the liquids produce a pattern of separate bands that can be seen through the body of the device.
Owner:GOLIATH IP STICHTING

Method for rotating and displacing a framed building

The application discloses a kind of frame structure building rotation displacement method, it is related to civil construction technical field, construction circular arc-shaped displacement track in the two sides of frame column along displacement direction, the displacement track of far side from rotation center is outside track, the displacement track of near side to rotation center is inside track, support plate is respectively laid on the top surface of inside track, outside track, and several rollers are placed on the top surface of support plate along the displacement direction of building;Connecting is implanted with insert reinforcement in the two sides of frame column perpendicular to displacement direction;First, the concrete of underpinning beam perpendicular to displacement track direction is poured, then the concrete of underpinning beam parallel to displacement track direction is poured;Frame column between the bottom of underpinning beam and the top of foundation is cut off;Pushing system is set in each displacement track, and building is moved to predetermined position by pushing system.The application utilizes outside inclined displacement track to provide centripetal force to realize building frame displacement rotation, meet the demand of changing building orientation, and displacement process is stable and controllable.
Owner:SHANDONG JIANZHU UNIV

Teaching experiment teaching aid for centripetal force influence factors

The utility model discloses a teaching experiment teaching aid for centripetal force magnitude influence factors, and relates to the technical field of experiment teaching aids, the teaching experiment teaching aid comprises a bottom plate, four vertical rods, four cross rods and fixing columns, the vertical rods are fixedly installed at four corners of the top surface of the bottom plate, the cross rods are fixedly installed between the top ends of the vertical rods which are opposite in pairs, and the fixing columns are fixed on the bottom plate. A driving assembly is fixedly connected to the center of the top face of the bottom plate, and the fixing column is fixedly installed on the top face of a transverse rod. The speed regulation motor is used for stabilizing the rotating speed to improve unstable rotating speed caused by using hands, the rotating speed can be adjusted through the numerical control module, the movement radius is changed by adjusting the height of the force measurement module, operation is simple and visual, and the principle is easy to understand; experimental phenomena of the same mass and different rotating speeds, the same rotating speed and different radiuses, and the same mass and the same rotating speed radius are obvious, so that students can intuitively and quantitatively understand the influence factors of the magnitude of centripetal force.
Owner:YUNNAN NORMAL UNIV

Turning conveyor for full-body marble tile production line

The utility model relates to the technical field of tile production equipment, in particular to a whole-body marble tile production line turning conveyor which comprises a rack, a U-shaped conveying frame and a fine adjustment mechanism, and a plurality of material guide rollers are rotationally arranged on the U-shaped conveying frame in the conveying direction of the U-shaped conveying frame; the two ends of the U-shaped conveying frame are rotationally connected with the rack through a first rotating shaft and a second rotating shaft correspondingly. Through the rotary connection mode, the contact surface of the U-shaped conveying frame and the product can incline relative to the horizontal plane. Through the design of the mechanism, the resultant force of the gravity of the product and the supporting force of the material guide roller can provide additional centripetal force for the product so as to offset part of centrifugal force, and it is ensured that the product cannot generate large deviation when passing through the device. The inclination angle of the U-shaped conveying frame can be accurately adjusted through the fine adjustment mechanism so as to meet different production line speeds, and through the design of the mechanism, the influence of centrifugal force can be reduced, the production efficiency can be improved, and potential safety hazards can be reduced.
Owner:GUIZHOU YATAI CERAMICS CO LTD

Kitchen waste crushing treatment device capable of preventing cutter from being stuck

The kitchen waste crushing treatment device is characterized in that upper cutting blades are arranged on the two circumferential sides of a barrel connecting piece respectively, each upper cutting blade is sequentially provided with a point position a, a point position b, a point position c and a point position d from outside to inside, and the point position d to the point position c extend in the direction away from the center of a rotating shaft body to form a section cd; the point c to the point b extend towards the center of the rotating shaft body to form a bc section, the point b to the point a extend towards the center of the rotating shaft body to form an ab section, and the cd section is provided with at least one arc-shaped cutting surface. When the movable cutter assembly rotates, centripetal force is applied to clustered or caked kitchen garbage through the arc-shaped cutting face of the upper cutting blade, and when the kitchen garbage far away from the rotating shaft body cannot be crushed, the kitchen garbage moves towards the rotating shaft body under the action of the centripetal force, so that the force arm is reduced, the cutting force is improved, and the crushing effect is improved; and the phenomenon that the cutter is stuck is avoided.
Owner:BIGLAND ELECTRIC APPLIANCE

Balance-free fan blade and fan device

The invention provides a balance-free fan blade and a fan device, and relates to the technical field of fans, the balance-free fan blade comprises an annular sealing structure and a fan blade body, the annular sealing structure is embedded in the fan blade body, and the annular sealing structure is filled with high-density liquid. The annular sealing structure is an annular hollow closed pipe with two closed ends. And the hollow closed pipe and the fan blade body are molded. After the fan runs, the mass ratio of the high-density liquid at different positions is automatically adjusted through the rotating centripetal force of the fan, and therefore the dynamic balance of the fan blades under high-speed movement is achieved. According to the fan blade, the high-density liquid is filled in the hollow closed pipe, so that when the fan runs, the mass ratio of different positions is automatically adjusted, and the fan blade automatically reaches the balance state.
Owner:SHENZHEN STONEPLUS THERMAL MANAGEMENT TECHNOLOGIES LIMITED

Robotic high-efficiency automated welding structure and apparatus thereof

PendingCN122274530APhysicsWeld bead
This invention provides a highly efficient automated welding structure for robots, relating to the field of welding equipment technology. It includes: a main frame structure with a slide rail at its bottom; a support and pressure application component slidably mounted on the slide rail for supporting and clamping a cylindrical workpiece from both sides and applying a centripetal force to the workpiece to cause radial contraction; a positioning support component mounted on the main frame structure, including a liftable calibration plate for insertion into the weld gap of the cylindrical workpiece before welding to calibrate and position the weld; and a welding execution component located above the positioning support component and connected to the main frame structure for automated welding of the calibrated weld after the calibration plate is withdrawn. This invention, through the mechanical alignment of the calibration plate and the centripetal pressure of the support and pressure application component, can automatically eliminate weld gaps and ensure weld alignment accuracy, thereby improving welding quality and automated operation efficiency.
Owner:ZHEJIANG QIHUA HOME FURNISHING TECH CO LTD

Double-blade opposite axial flow fan blade and air supply device using same

The utility model relates to the technical field of fan blades, and discloses a double-blade opposite axial flow fan blade and an air supply device using the same, the double-blade opposite axial flow fan blade comprises a hub and a plurality of blade groups annularly and uniformly distributed on the peripheral surface of the hub, each blade group comprises a front bent blade and a rear bent blade, and the front bent blades and the rear bent blades are respectively and obliquely arranged relative to the axis of the hub. By means of the front bent blades and the rear bent blades which are alternately arranged, the centripetal force of the front bent blades and the centrifugal force of the rear bent blades can be integrated by means of the opposite bending directions of the front bent blades and the rear bent blades; therefore, the problems of noise and energy loss caused by airflow path extension due to centripetal airflow gathering caused by unidirectional forward bending inertia force and centrifugal airflow dispersion caused by unidirectional backward bending are solved.
Owner:GUANGDONG HOMERIT HLDG LTD

Powerful turbofan and propelling mechanism

The utility model discloses a powerful turbofan and a propulsion mechanism, and relates to the technical field of power propulsion, the powerful turbofan comprises a rotor part and a stator part which can rotate relatively, the stator part is sleeved outside the rotor part, and the rotor part comprises an inner ring and a plurality of permanent magnet rotors arranged around the inner ring. The stator component comprises a plurality of coil stators arranged on the periphery of the permanent magnet rotor, fan blades are connected to the inner wall of the inner ring, and the stator component is connected with the rotor component through a bearing. The motor has the beneficial effects that a central motor is changed into the peripheral motor, centrifugal force of the motor for driving the fan blades is completely eliminated, centripetal force is generated, all the fan blades and the rotor part are integrally arranged, the technical problem that the fan blades shake due to the centrifugal force when the motor rotates at a high speed in the prior art is solved, the energy efficiency is remarkably improved, and noise is reduced; the flow speed of fluid is increased through the airflow gathering part, the fluid area is increased through the airflow diffusion part, and therefore the fluid propelling efficiency of the fan blades is improved.
Owner:李焰 +1

Force focusing device

A device is provide comprising: a first rotatable component for rotation in a first direction; a second rotatable component for rotation in a second direction; one or more first weights for movement along one or more first weight paths using the first rotatable component; and one or more second weights for movement along one or more second weight using the second rotatable component, wherein upon substantially synchronised rotation of the first rotatable component in the first direction and the second rotatable component in the second direction: the one or more first weights follow the one or more first weight paths, wherein the one or more first weights pass between one or more first weight minimum centripetal force positions, wherein centripetal force on the one or more first weights is at a minimum, and one or more first weight maximum centripetal force positions, wherein centripetal force on the one or more first weights is at a maximum, and the one or more second weights follow the one or more second weight paths, wherein the one or more second weights pass between one or more second weight minimum centripetal force positions, wherein centripetal force on the one or more second weights is at a minimum, and one or more second weight maximum centripetal force positions, wherein centripetal force on the one or more second weights is at a maximum, wherein during the synchronised rotation of the first component in the first direction and the second component in the second direction, centripetal force on the one or more first weights and centripetal force on the one or more second weight results in overall or net directional force on the device. Related methods and equipment are also provided.
Owner:GREEN GREGORY JOHN

Rotary motion device in space capsule and operation method

The invention discloses a device for passengers to rotate in a space capsule. The device comprises a supporting part on the space capsule, a supporting shaft, a crankshaft or a crank fixedly or movably connected with the supporting shaft, an elastic device and a loader capable of carrying people to rotate, wherein one end of the elastic device is movably connected with the crank pin or the crank pin, and the other connecting end of the elastic device is connected with the supporting part or other fixing devices; the loader is formed by connecting a suspension pull part and a manned part; the suspension pull part is directly or indirectly fixedly connected with the crankshaft or the crank, and swinging or rotating of the suspension pull part enables the linked crankshaft pin or crank pin to be subjected to correspondingly changed force of the elastic device; the manned part bears the body of a passenger or provides centripetal force required by circular motion of the passenger; the operating method of the device comprises the steps that the moving direction of the mass center of a passenger relative to the suspension pull part is preferably consistent with the direction of torque which is borne by the suspension pull part and transmitted by a crankshaft or a crank through an elastic device, or the movement in the direction is carried out when the torque borne by the suspension pull part is large or maximum; the swing amplitude or the rotation speed of the loader can be increased through repeated operation, and the effects of feeling the artificial gravity and building the body are achieved.
Owner:刘二中

Electric tool capable of supplementing oil

The invention discloses an electric tool capable of supplementing oil, the electric tool capable of supplementing oil comprises a tool shell, an impact mechanism, a transmission mechanism and an oil supplementing mechanism, the transmission mechanism comprises an intermediate shaft, a swing rod bearing and a clutch set, and the intermediate shaft comprises a shaft body and a belt rotating part; the oil supplementing mechanism is provided with at least one drainage channel, at least one inlet and at least one outlet, the portion, participating in forming of each drainage channel, of the oil supplementing mechanism forms an arc wall, and the arc wall bends and extends in the outward direction of the rotating center of the oil supplementing mechanism in the mode that the tangent line tangent to the arc wall is arranged outside the drainage channel. The oil supplementing mechanism rotates to drive gas in the tool shell and arranged on the periphery of the oil supplementing mechanism to flow, and centripetal force is formed under the guiding effect of the arc wall to guide grease to be guided into the drainage channel through the inlet and then discharged to the side wall of the shaft body through the outlet. Grease permeates into a gap between the swing rod bearing and the shaft body along the side wall of the shaft body.
Owner:YONGKANG MINGPU IND & TRADE CO LTD

A wind turbine variable pitch gear ring collision control method, device, equipment and medium

The application discloses a wind turbine variable pitch gear ring collision control method, device, equipment and readable storage medium. The method comprises the following steps: judging whether the variable pitch bearing gear ring and the variable pitch pinion of the wind turbine collide; if the collision occurs, judging whether the wind turbine is in a power generation state; if the wind turbine is in the power generation state, increasing the rotating speed of the wind wheel; and if the wind turbine is in a non-power generation state, collecting the blades to an angle greater than or equal to a preset angle. When the variable pitch bearing gear ring and the variable pitch pinion collide, if the wind turbine is in the power generation state, the rotating speed of the wind wheel is increased to increase the centripetal force of the blades, so that the variable pitch bearing gear ring is tightly attached to the tooth surface of the variable pitch pinion, thereby effectively avoiding the collision between the variable pitch bearing gear ring and the variable pitch pinion. If the wind turbine is in the non-power generation state, the blades are collected to a large angle to reduce the rotation of the wind wheel, thereby effectively reducing the collision frequency of the variable pitch bearing gear ring and the variable pitch pinion per unit time.
Owner:CSIC HAIZHUANG WINDPOWER CO LTD

A new type of welding auxiliary device for quick-opening pressure vessel

The utility model belongs to pressure vessel welding field, concretely is a kind of novel quick-acting door type pressure vessel welding auxiliary device, including fixed base, the fixed base is welded in the middle position of spherical cap head, and with centripetal ball bearing, center seat realizes coaxial stable connection. The center seat is connected with connecting rod by fixed bolt, the connecting rod is welded with balance adjusting seat integrally. The balance adjusting seat and length adjusting screw rod are fixed by adjusting nut, the length adjusting screw rod is welded together with automatic submerged-arc welding trolley. The utility model structure design is reasonable, by rotating center seat and connecting rod, balance adjusting seat, length adjusting screw rod connection, under the centripetal force provided by the automatic welding submerged-arc trolley fixed in the front end of length adjusting screw rod, make it carry out circumferential motion, make automatic welding submerged-arc trolley can better carry out welding to the group of the circumferential weld of spherical cap head and upper flange, compared with the welding of manual arc welding, the design improves the forming and welding speed of weld, improves work efficiency, reduces cost.
Owner:LIAONING CONSTR INSTALLATION GRP

Anti-deviation device for small-radius plane turning belt conveyor

The invention belongs to the technical field of belt conveyors, and particularly relates to an anti-deviation device for a small-radius plane turning belt conveyor, which comprises a rack, a roller frame is arranged at the top of the rack, a driving gear is rotatably mounted in the middle of the top of the rack, a rack is arranged at the bottom of the roller frame, and a gear support is arranged at the bottom of the driving gear support. A sliding seat is arranged on the side, away from the diagonal draw bar, of the roller frame in a sliding mode, the top of the sliding seat is hung on the roller frame through a hanging spring, a pressing roller is arranged on the inner side of the sliding seat, an upward jacking assembly is arranged on the sliding seat and connected with the gear through a transmission assembly, and when the roller frame deflects, the driving gear drives the upward jacking assembly to downwards press the sliding seat through the transmission assembly; and when the roller frame stops deflecting, the upward jacking assembly relieves the pressure on the sliding seat, so that the edge of the conveying belt is tightly pressed on the carrier roller by the pressing roller, and when the roller frame stops deflecting, the upward jacking assembly relieves the pressure on the sliding seat. The anti-deviation device has the advantages that the influence of centripetal force on the conveying belt can be effectively reduced, and the anti-deviation performance of the conveying belt is improved.
Owner:CHINA COAL TECH & ENG GRP SHANGHAI

Folding propeller with conformal propeller blades and propeller hub

PendingCN121871765APropellersFolding propellerFlight vehicle
The invention belongs to the technical field of aircrafts, and particularly relates to a folding propeller with conformal propeller blades and propeller hubs, which is characterized in that the center-of-gravity position of each propeller blade is set, and the mass of each single propeller blade and the distance from the center-of-gravity of each propeller blade to the rotation center are designed; the aerodynamic force thrust and the component force in the negative direction of the normal of the centripetal force of the propeller blade are equal and opposite in direction, so that the blade deformation caused by the thrust is compensated, the center line of the propeller blade can coincide with the rotating plane, and at the moment, the propeller blade and the propeller hub form a complete integrated propeller. According to the folding propeller, the appearance and the structure of the propeller blades are designed, so that the gravity center deviates from a rotating plane and deviates towards the thrust direction by a certain distance, the axial aerodynamic force and the axial component force of centrifugal force borne by the propeller blades during rotation are balanced, the folding propeller is in a design point state during working, the efficiency of the propeller is improved, and the propeller is more stable during rotation.
Owner:ANHUI XUANYU AVIATION TECHNOLOGY CO LTD

Robot adaptive neural optimal tracking control method and device considering dynamic constraints

ActiveCN119805928BAdaptive controlRobotic systemsNetwork approach
An adaptive neural optimal tracking control method and device for robots considering dynamic constraints are disclosed. The method includes: establishing a dynamic model of the robot in joint space, considering the robot system's input torque, inertia matrix, centripetal force, Coriolis force matrix, and gravitational torque; mapping the robot system's dynamics to Cartesian space, defining position and velocity vectors, and establishing a state-space model of the robot system; and designing an adaptive optimal neural tracking controller based on the optimal backstepping method and the "actor-critic" neural network method to handle dynamic constraints and achieve optimal tracking performance under dynamic constraints. This invention enables the robot to track the desired trajectory more accurately under dynamic constraints while ensuring motion safety.
Owner:ZHEJIANG UNIV OF TECH

Cast-in-place pile pore-forming perpendicularity detection device

ActiveCN224281391Uguaranteed projectionFoundation testingLaser lineProjector
The utility model discloses a cast-in-place pile pore-forming perpendicularity detection device, belongs to the technical field of building construction, and solves the problem that the perpendicularity of a cast-in-place pile is difficult to detect. The device comprises a suspended outer cage and a vertical self-balancing cage, the vertical self-balancing cage is connected to the center of the suspended outer cage, a gravity balance hammer is arranged in the vertical self-balancing cage, and a laser demarcation device is arranged on the upper surface of the gravity balance hammer; the bottom of the gravity balance weight is higher than that of the suspension outer cage. The vertical self-balancing cage is designed by applying the centripetal action theory of gravitational attraction, and the vertical self-balancing cage is provided with an X and Y bidirectional suspension mechanism, so that the laser demarcation instrument arranged in the vertical self-balancing cage can be kept in a vertical state by virtue of the self weight of the gravity balance hammer even if the suspension outer cage is skewed due to the uneven bottom of a pile hole, and the vertical self-balancing cage has the advantages of simple structure and low cost. Therefore, it is guaranteed that the laser demarcation device projects a cross perpendicular line upwards vertically all the time, and the perpendicularity deviation of the pile hole can be known according to the deviation between the intersection point position of the cross perpendicular line projected to the upper opening of the pile hole and the actual center point of the pile hole.
Owner:GANSU NO 1 CONSTR ENG GRP

Axial flux machine rotor

A rotor for an axial flux machine, where the rotor is formed of a disc shaped rotor body, a magnetic sub-assembly and an inner ring structure. The magnetic sub-assembly comprises a plurality of permanent magnets, a compression ring structure and a support ring structure. The magnetic sub-assembly is bonded to a first face of the disc shaped rotor body, and the inner ring structure bonded to a support ring structure of the magnetic sub-assembly. The compression ring structure provides a radially inward force that acts in opposition to the centripetal force exerted on the permanent magnets when the rotor is spinning. The support ring structure reacts the compressive loads of the compression ring structure, in particular when the rotor is at rest or non-operation, which is when the compressive forces on the permanent magnets are at their greatest.
Owner:EVOLITO LTD

Quality detection equipment for inner wall and outer wall of annular metal part

The invention relates to the technical field of detection equipment, in particular to annular metal part inner and outer wall quality detection equipment which comprises a detection table, a conical seat used for bearing an annular metal part is fixedly installed in the detection table, a plurality of rectangular sliding holes are evenly formed in the surface of the conical seat in the circumferential direction, and the rectangular sliding holes are annularly distributed. According to the device, the conical seat is arranged, and the geometrical characteristic that the diameter of the conical surface continuously changes is utilized, so that the annular metal part automatically slides to a stable position along the conical surface under the action of the gravity of the annular metal part; therefore, centripetal force evenly distributed in the whole circumferential direction is formed under the condition that no extra drive or complex adjusting mechanism is needed, it is guaranteed that the circle center of the annular metal part naturally coincides with the axis of the device, and the positioning precision and axis consistency are remarkably improved.
Owner:HUNAN KAIZHUO INTELLIGENT TECH CO LTD

Environment-independent propulsion device

A self-contained propulsion device is developed. The self-contained propulsion device includes at least one oscillating section comprising an axial rod connected to an arm connected to at least one counterweight, and a stabilizing component positioned within a stabilizer hole, and at least one fixed section comprising a motor and a power transmission mechanism from the motor to the axial rod. The self-contained propulsion device utilizes centripetal force to generate thrust, independent of external mediums such as air or water, etc. Compared with traditional propulsion systems, this self-contained propulsion device is suitable for aerospace, ocean engineering and ground transportation industries, providing improved stability, higher energy efficiency and sustained thrust generation. The symmetrical design of the self-contained propulsion device further enhances performance by balancing counteracting forces and amplifying net thrust, making it highly adaptable to complex environments.
Owner:萨达尔·马赫穆迪 +1

majority V-belt pulley Taper bush Motor Ultra-High engine

PendingKR1020260113545AAir velocityElectric machine
In this invention, the output of the natural law of this invention is smallest at the center and largest at the tip of the blade. That is, the centrifugal force of 1 / 6 of the diameter including the central axis (12e) of the multiple tapered bush pulley V-belts (12) with low output; the centripetal force of 1 / 3 of the diameter of the circumference of the multiple V-belt drive (13) with high output on the outer circumference; and when the diameter of the centripetal force is twice the diameter of the centrifugal force, the output is proportional to the cube of the wind speed. That is, the output increases eightfold when the speed is doubled. That is, 8 times × 4 times for front-back-left-right = 32 times, and when electricity is supplied to the motor including the motor of the above V-belt drive (13), the potential momentum energy of the centripetal force in the front-back-left-right direction of the V-belt drive (13) with a large output and diameter is converted into super-maximized energy, and when the central centrifugal force tapered bush pulley V-belt (12) with a small output and diameter is concentrated, the momentum energy of the generator rotor (14b) is proportional to the square of the blade length. In actual cases, or in the operation and power generation process of the above V-belt drive, etc., the invention is characterized by a source invention for creating pure surplus energy after offsetting the amount of electricity supplied at 25% loss and 75% efficiency.
Owner:박재원