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531 results about "Inertia force" patented technology

Strong nonlinear simulation method and device suitable for large floating fan

The invention provides a strong nonlinear simulation method and device suitable for a large floating fan, and the method comprises the steps: dividing a target floating fan into a plurality of body structures according to the model parameters of the target floating fan, so as to construct a multi-body model containing a plurality of degrees of freedom, and building a whole machine load and a motion transmission path; the aerodynamic load input of each body structure is calculated, and the nonlinear dynamic response of the blade is calculated according to the aerodynamic load input of each body structure; according to the coordinate transformation relation, the nonlinear dynamic response of the blade is converted into a whole coordinate system and input into a multi-body dynamic model of the whole machine, generalized active force and generalized inertia force of each body structure in the target floating type draught fan are obtained through calculation, and the motion response of each body structure of the target floating type draught fan is obtained through simultaneous solution. According to the scheme, the motion response of each body structure of the target floating fan can be accurately determined, so that the running state of the floating fan in the deep and far sea complex environment can be accurately evaluated.
Owner:POWERCHINA RENEWABLE ENERGY CO LTD +2

Deep underground structure pseudo-dynamic test method and device

The invention belongs to the technical field of underground structure tests, and provides a deep underground structure pseudo-dynamic test method and device.The method comprises the steps that a numerical substructure and a test substructure are constructed, and an interaction boundary is arranged between the numerical substructure and the test substructure; and compensating the boundary prediction data according to the inertia force compensation coefficient based on the numerical sub-structure in each loading process, and loading the compensated prediction data to the test sub-structure, so that the test sub-structure outputs prediction response data and updates the rigidity of the numerical sub-structure, and determining a target balance force according to the prediction response data based on the numerical simulation substructure, driving a next loading process by using the target balance force, and obtaining a dynamic response rule of the soil-structure system when respective boundaries of the numerical simulation substructure and the test substructure meet displacement coordination and force balance. According to the method, the initial stress state of the deep underground structure can be accurately simulated, and the accuracy of obtaining the mechanical response rule of the underground structure is improved.
Owner:HUNAN UNIV

Method for controlling a grass collecting device, control device and electronic device

The application discloses a control method and device of a grass collecting device and electronic equipment. The control method of the grass collecting device comprises the following steps: obtaining a grass unloading instruction; controlling the grass collecting box to move from a first position to a second position in a first direction according to the grass unloading instruction, wherein the first position is a position where the grass collecting box is in a closed state, and the second position is a position where the grass collecting box reaches a maximum opening angle; and controlling the grass collecting box to swing according to swing parameters, wherein the swing parameters comprise a swing angle, and the swing angle is smaller than the maximum opening angle. By using the control method of the grass collecting device, most of the grass clippings can be unloaded after the grass collecting box is lifted, and different direction inertial forces can be generated in the swinging process of the grass collecting box, so that a small amount of residual grass clippings can be removed through vibration, the situation that the grass is not completely unloaded is avoided, the grass unloading efficiency and effect are improved, and manual unloading operation is saved.
Owner:SHENZHEN MAMMOTION INNOVATION CO LTD

Intelligent layered flow guide device for highway tunnel fire smoke and control method

The invention discloses an intelligent layering and guiding device for highway tunnel fire smoke and a control method, and relates to the technical field of tunnel fire safety, a smoke flow Froude number is introduced as a direct control target, the parameter represents the ratio of smoke flow inertia force to buoyancy force, the numerical value directly determines the stability of a layering interface, and the layering interface can be directly controlled. The Froude number of each subarea of the tunnel is calculated in real time through a sensing network and is compared with a critical value calibrated through an experiment, when a real-time value is lower than the critical value, it is indicated that inertia force is relatively insufficient, the buoyancy effect is dominant, and instability and entrainment are likely to happen to an interface between a smoke layer and lower cold air, and then according to a control algorithm, the smoke layer and the lower cold air are controlled. The micro jet fan applies directional inertia force to a smoke layer by adjusting the angle and the speed, the intelligent induction smoke outlet optimizes local pressure difference and flow by adjusting the opening degree and assists in maintaining flowing, the smoke flowing state is actively locked in a stable layered flow interval, and mixing and sedimentation caused by flow state instability are prevented.
Owner:QINGDAO HONGNIUNIU INFORMATION TECHNOLOGY CO LTD

Electric power steering active return control method and system

The invention provides an electric power steering active return control method and system, and belongs to the field of electric power steering systems.The electric power steering active return control method comprises the steps that in the rotating process of a vehicle steering wheel, zone control is conducted with the steering wheel rotating angle as the benchmark, and original request torque is obtained; estimating the inertia moment of the steering wheel in the steering wheel aligning process; and calculating the original request torque and the steering wheel inertia torque to obtain a corrected steering wheel torque, and correcting the steering wheel torque according to the corrected steering wheel torque. According to the technical scheme, the aligning torque error caused by rotating speed fluctuation of the steering wheel is eliminated, and particularly under the working condition that a driver is completely released from the hand, the stability of aligning control is remarkably improved.
Owner:DONGFENG MOTOR GRP

Tuned mass vibration damper with controllable damping

The invention discloses a tuned mass vibration damper with controllable damping, and relates to the field of vibration control of offshore wind power generation equipment structures. The mass damping unit is arranged in a suspended mode, the clamping ring is coaxially arranged, the electromagnetic damping units are evenly distributed in the circumferential direction of the clamping ring, and the electromagnetic damping units are connected with the mass damping unit through winding ropes which are arranged in a radial mode to form a multidirectional synergistic composite damping system; the mass damping unit generates reverse inertia force in vibration to restrain movement of the tower and drives the electromagnetic damping unit to act at the same time, the generator is driven to generate electromagnetic damping through the one-way bearing and the speed increaser, and lossless reset is achieved through the torsion ring. The device is integrated with an energy recovery unit, vibration energy is converted into electric energy to be stored, real-time regulation and control of damping force, omni-directional vibration response and energy feedback are achieved, and the vibration reduction efficiency and the energy utilization rate are remarkably improved.
Owner:XIANGTAN ELECTRIC MFG CORP LTD +1

Tuned mass damping device for controlling low-frequency vertical bending vortex vibration of large-span bridge

The invention belongs to the technical field of vibration control, and discloses a tuned mass damping device for controlling low-frequency vertical bending vortex vibration of a large-span bridge, which consists of a fixed pulley, a mass block, a high-strength light force transmission cable, a spring, a hanging ring and a damper. Fixed pulleys and mass blocks are arranged at the positive and negative maximum displacement positions of a longitudinal bridge direction mode of a main beam respectively, a suspension system is formed by a full-length force transmission cable, and the gravity of the two mass blocks is basically balanced; the mass block is connected through the spring and is close to the bridge vibration control target frequency. When the bridge vibrates, the two mass blocks generate inertia forces which are opposite in direction but overlapped with each other, the driving system and the bridge form resonance, and therefore bridge vibration is effectively restrained. The gravity of the mass block can be self-balanced, the strength and the number of the springs are greatly reduced compared with those of a traditional TMD, any low-frequency tuning can be conducted in a vertical limited space, and the engineering cost is remarkably reduced. The device can be used for controlling vertical bending and torsional vibration of various engineering structures; the damper is replaced by an actuator, so that active control can be realized or the damper can be used as a structural excitation device.
Owner:DALIAN UNIV OF TECH

Intelligent hoisting equipment for suspension bridge truss girder in extreme wind environment and hoisting construction method

PendingCN121948274AEffectively offsets horizontal swingsImprove stabilitySafety gearArchitectural engineeringLattice girder
The invention belongs to the technical field of truss girder hoisting, and particularly relates to intelligent hoisting equipment for a suspension bridge truss girder in an extreme wind environment and a hoisting construction method.The intelligent hoisting equipment comprises a floating crane, and a hoisting tool component is fixedly installed at the lower end of a steel wire rope of the floating crane and comprises a posture adjusting device and an offset adjusting device. According to the intelligent hoisting equipment for the suspension bridge truss girder in the extreme wind environment and the hoisting construction method, by arranging the sling component and integrating the posture adjusting device and the offset adjusting device, multi-degree-of-freedom active adjustment can be conducted on the hoisted truss girder. The offset adjusting device generates reverse inertia force by driving the mass block to move, so that horizontal swinging of the truss girder caused by wind load is effectively counteracted; the posture adjusting device accurately corrects pitching and rolling postures of the truss girder by adjusting the length of the steel wire rope set, and therefore the overall wind resistance stability and posture keeping capacity of the hoisting system are remarkably enhanced in the extreme wind environment.
Owner:CCCC SHEC FIRST HIGHWAY ENG

Critical parameter prediction method for vertical cantilever fluid conveying pipe comprising water injection pump and Y-shaped nozzle

The invention discloses a critical parameter prediction method for a vertical cantilever fluid conveying pipe comprising a water injection pump and a Y-shaped nozzle, and relates to the field of fluid conveying pipe critical parameter calculation. The prediction method is based on an Euler-Bernoulli beam model and a momentum theorem, bending force, centrifugal force, Coriolis force, inertia force, gravity and additional force generated by an elbow are comprehensively considered, and an oscillatory differential equation of the fluid conveying pipe is established. The method comprises the following steps: performing dimensionless processing on an oscillatory differential equation by introducing dimensionless parameters, deducing a characteristic equation, a characteristic function and a characteristic value under a cantilever boundary condition, converting a partial differential equation into an ordinary differential equation set, and performing matrix solution; and finally, accurate prediction values of the critical flow velocity and the critical frequency can be obtained. The method can effectively reflect the influence rule of the nozzle and the concentrated mass on the vibration characteristics of the fluid conveying pipe, and realizes the accurate prediction of the critical parameters of the vertical cantilever containing the concentrated mass belt Y-shaped nozzle fluid conveying pipe.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Hot gas expansion-explosion composite forming method for forming complex deep-cavity thin-wall component

PendingCN121339272APlastic propertyThin walled
The invention belongs to the technical field of material forming and manufacturing, and discloses a hot gas expansion-explosion composite forming method for forming a complex deep-cavity thin-wall component. According to the hot air expansion-explosion composite forming method, a mold unit, an air pressure loading unit and an explosion unit are needed; the method comprises the following steps: mold preheating; feeding and die assembly are carried out; compressed air is filled, and pre-expansion is carried out; fuel is sprayed, and explosion forming is conducted; releasing pressure; and opening the mold and taking the part. The method has the advantages that hot gas bulging forming utilizes metal high-temperature plasticity and evenly-distributed flexible air pressure loading, and the plate forming performance is improved; explosive forming has a very high deformation rate, high plastic deformation can be achieved within a very short time, and the forming performance of the plate can be further improved through the combined action of the strain rate effect and the inertia force. According to the method, the plastic deformation capacity of the material can be remarkably improved by combining the two, and forming of the complex deep-cavity thin-wall component is facilitated.
Owner:DALIAN JIAOTONG UNIVERSITY

Inerter particle type power transmission tower damping device with multidirectional control function

The invention belongs to the technical field of power transmission tower structure damping, and discloses an inerter particle type power transmission tower damping device with a multidirectional control effect. The inerter is introduced into the particle damper, so that the total mass of the damping device is reduced, and the light weight of the device is achieved. And in consideration of the fact that the seismic response of the power transmission tower is multidirectional motion, the arrangement mode of the particles and the inerter is optimally designed, so that the damping effect of the device is further improved. The inerter can generate inertia force opposite to the structural vibration direction, and the dynamic damping effect of the particle damper is guaranteed while the number of particles is reduced. The inerter composed of the gear and the rack is small in dead weight, compact in structure and easy to install, a power transmission mechanism has low energy loss, the gear and the rack are in rigid meshing transmission, rapid rotation of the flywheel can be achieved, the inerter has high sensitivity to sensing of earthquake response of a power transmission tower, and the inerter is suitable for popularization and application. And large rotation inertia force can be generated in a limited space.
Owner:NORTHEASTERN UNIV CHINA

Dynamic compensation detection method for float-type water level gauge

The invention relates to the technical field of measurement, in particular to a float-type water level gauge dynamic compensation detection method which comprises the following steps: collecting float angle sequence data; synchronously acquiring environment disturbance parameters; calculating the floater angle sequence data to obtain a preliminary water level value; constructing a dynamic compensation model, and outputting an inertia force correction term, a fluid damping correction term and a mechanical hysteresis correction term; the inertia force correction term, the fluid damping correction term and the mechanical hysteresis correction term are multiplied by corresponding weight factors respectively, then algebraic sum is solved, a total compensation amount is obtained, and the weight factors are dynamically adjusted and normalized according to the current wave high energy spectral density, the wind speed gradient change rate and the water temperature viscosity correction coefficient; and deducting the total compensation amount from the initial water level value, and outputting a final compensated water level value. According to the method, the problems of poor multi-physical field sensing capability and poor online parameter identification capability of a compensation method in the prior art are solved.
Owner:ANHUI BENGBU HUAIHE SHIPLOCK CO LTD

Active dynamic balance control method and system for tower crane

The invention discloses an active dynamic balance control method and system for a tower crane, and the method comprises the steps: monitoring the vertical state of a tower body or the horizontal state of a working arm in real time, and obtaining an actual posture value; comparing the actual attitude value with a preset standard attitude value, and judging attitude deviation and direction; according to the deviation direction, a balance weight executing mechanism on the balance arm side is directly driven to act so as to change the balance torque, and the specific value of the needed torque is not calculated in advance in the adjusting process; and real-time monitoring is continuously carried out while adjustment is carried out until the attitude deviation is eliminated, and closed-loop control with the vertical tower body as a direct control target is formed. Through attitude feedback closed-loop control, any unbalance disturbance including inertia force can be sensed in real time and directly corrected, the tower body alternating bending moment is fundamentally eliminated, the foundation of tower body shaking is eradicated, the service life of a tower crane is remarkably prolonged, and meanwhile the structure of a control system is simplified.
Owner:陈先凯

Fruit conveying anti-blocking mechanism based on full-connection neural network and control method

The invention discloses a fruit conveying anti-blocking mechanism based on a neural network and a control method. The mechanism comprises a conveying channel, a disturbance disc connected with a motor through a universal joint, a touch sensing array and a gravity self-adaptive floating assembly. According to the mechanism, pressure data of a tactile sensing array on the surface of a disturbance disc are collected through Jetson, and the blockage state is judged in real time through a full-connection neural network; when blockage occurs, the Jetson directly controls the servo motor to change speed, the alternating inertia moment is matched with the gravity of fruits to overcome the resistance of the spring, and the disturbance disc is forced to passively incline around the center of the universal joint, so that the blockage is relieved. By means of the mode of combining motor rotating speed control and mechanical passive inclination, blockage caused by fruit accumulation is effectively damaged, and fruit damage is reduced while rapid dredging is achieved.
Owner:CHINA AGRI UNIV

A walking control method of a stacker

The application provides a walking control method of a stacker, and relates to the technical field of warehouse transportation. The stacker comprises a walking mechanism, a counterweight mechanism, a driving mechanism, a control mechanism and an acceleration sensor. When the acceleration sensor detects that the acceleration of the walking of the stacker is less than zero, the control mechanism controls the driving mechanism to move at least one counterweight unit in the opposite direction of the advancing direction of the stacker. The counterweight mechanism adopts a plurality of counterweight units which can be independently moved relative to the walking mechanism. The center of gravity of the stacker can be accurately and flexibly adjusted according to the load condition, the running state and the like of the stacker. When the stacker is in emergency deceleration, the counterweight unit is moderately moved backward to offset the inertial moment of the forward movement of the center of gravity during deceleration, so that the center of gravity of the stacker is kept as much as possible in the middle, and the forward movement of the center of gravity of the stacker during emergency deceleration is avoided to reduce the ground adhesion force of the rear part of the stacker, thereby enhancing the ground adhesion performance of the stacker, improving the braking performance and stability of the stacker, and shortening the braking distance.
Owner:ZHEJIANG BEITAI INTELLIGENT TECH CO LTD

Rubber coating device for automobile wire harness

The invention relates to the technical field of rubber coating devices for automobile wire harnesses, and discloses a rubber coating device for automobile wire harnesses, which comprises a rotating mechanism, and the rotating mechanism is rotatably connected to the outer wall of a positioning plate and is used for winding a rubber belt on a cable; the pressing wheel mechanism is fixedly connected to the outer wall of the rotating mechanism and used for increasing the tension when the adhesive tape is wound. The compression mechanism is connected to the inner wall of the pressing wheel mechanism in a sliding mode and used for clamping the last roll of adhesive tape, in this way, the situation that when the adhesive tape starts to be wound, the adhesive tape is pulled up due to too large tension, an adhesive coating layer is too thin is prevented, meanwhile, the situation that the number of turns of the adhesive tape is continuously consumed, friction force and inertia force are synchronously reduced, and the adhesive tape cannot be wound easily is prevented. Therefore, the tension of the adhesive tape is reduced, the adhesive tape is attached loosely, the overlapping rate of winding is insufficient, and the adhesive coating quality is influenced.
Owner:CIXI TENGYU ELECTRIC CO LTD

A multi-level interlocking security device

ActiveCN116772667BAmmunition fuzesRelease - actionMissile
This invention discloses a multi-level interlocking security device, including a base, a primary inertial safety mechanism, a secondary launch safety mechanism, a tertiary electromechanical safety mechanism, a first security seat, a second security seat, a PCB circuit board, and a release signal switch. The primary inertial safety mechanism can only release when the missile reaches a predetermined acceleration within the launch tube, achieving the required inertial force. The primary inertial safety mechanism can only release within the launch tube. If the missile does not reach the predetermined acceleration value within the launch tube, the secondary launch safety mechanism locks the primary inertial safety mechanism, preventing further release and preventing the secondary launch safety mechanism from completing its release action. The tertiary electromechanical safety mechanism can only release after the primary inertial safety mechanism and the secondary launch safety mechanism have released; otherwise, it will not release under any circumstances, ensuring the absolute safety of the missile.
Owner:WUHAN TIEDUN CIVIL DEFENCE ENG

Coaxial rotating eccentric vibrator

The invention relates to a coaxial rotating eccentric vibrator. A hydraulic motor drives two groups of eccentric blocks capable of reversely rotating around the same axis to rotate, and inertia force generated by rotation of the eccentric blocks is synthesized to enable a rotating shaft to generate linear vibration in a certain radial direction. The device is composed of a hydraulic motor 1, a flange plate 2, a box body 3 and an internal excitation part. A shaft output spline hole 17 of the hydraulic motor 1 is connected with a shaft head spline of the rotating shaft 5, and the hydraulic motor 1 is fixed to the box body 3. The flange 2 is fixed at the bottom of the box 3. The tool can be installed on the flange plate 2 to form a vibration tool for use. The vibrator can also be installed on other machinery equipment through the flange plate 2 to be used as a vibration source. The machine is compact in structure, easy to manufacture, concentrated in inertia force and suitable for the field with the requirement for linear vibration of inertia.
Owner:王茂胜

An aircraft servo-elastic dynamics model correction method considering actuator gap

The application provides a kind of aircraft servo elastic dynamics model correction method considering operating surface gap, first aircraft structure is divided into substructure, and the aircraft dynamics model containing aileron gap nonlinearity is established according to substructure branch modal;And additional inertia force caused by aircraft operating aileron deflection is introduced in dynamics model, and the aircraft open-loop servo elastic motion equation containing aileron gap nonlinearity under independent generalized coordinate is obtained;According to sensor output equation, rudder transfer function and flight control system equation, the aircraft nonlinear servo elastic closed-loop system model containing aileron gap nonlinearity is established, and the model is corrected based on ground vibration test, rudder frequency response test and gap measurement test result, and the stability of the model is judged based on simulation analysis result and open-loop frequency response test result and is further corrected, which improves the accuracy of gap nonlinearity aircraft aerodynamic servo elastic characteristic evaluation, and is helpful to guide aircraft servo elastic ground test engineering practice.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Safe fuse loading device with improved safety

PCT designated stageWO2026095163A1Time fuzesElectric fuzesDetonatorGear wheel
The present invention allows preemptive prevention of accidents of unintentional fuse detonation by equipping a rotor, which allows a fuse to be ignited by aligning detonation and connection pipes as the rotor rotates, with a double safety pin structure in which the restraint of the rotor is released only under bullet firing conditions that give rise to strong backward inertial force and rotational force. Additionally, unintentional harm to friendly forces area can be prevented by precisely adjusting loading time and increasing fuse safety distance via detent and gears and levers that adjust the rotor rotation time.
Owner:POONGSAN CO LTD

Highway anti-freezing operation machine in high and cold environment

The utility model discloses an anti-freezing operation machine for a highway in a high and cold environment, which relates to the field of road administration, and adopts the scheme that centrifugal fan blades and coaxial fan blades are driven by a motor to synchronously rotate at a high speed, so that opposite convection wind is formed, and air flows in two directions respectively cling to two sides of a spreading wheel and then flow all around; in the falling process of salt particles quantitatively provided by the feeder, the speed is increased along with airflow, the salt particles make contact with the spreading wheel, the salt particles different in thickness are scattered under the inertia force of the spreading wheel, meanwhile, horizontal convection gas on the upper side and the lower side carry small salt particles to be scattered, in the process, coarse salt particles have higher inertia force, and the salt particles are evenly distributed. And the fine salt particles compensate the scattering distance under the action of the airflow, so that the salt particles with different thicknesses can be uniformly scattered in the same area.
Owner:SICHUAN GAOLU INFORMATION TECHNOLOGY CO LTD

Automatic response control equipment and system based on artificial intelligence

The invention relates to the technical field of automatic control, and particularly discloses an automatic response control device and system based on artificial intelligence, and the system comprises a data collection module which is used for collecting the operation state data of a mechanical arm of an automatic robot in the part grabbing process, the data calculation module is combined with the operation state data of the mechanical arm after cleaning in the part grabbing process of the automatic robot, and the data can reflect the load condition of the mechanical arm in each grabbing operation process; due to the fact that the load condition of the mechanical arm can reflect the adaptation condition of the mechanical arm to inertia force generated during grabbing, artificial intelligence can make a decision on whether the grabbing speed of the mechanical arm needs to be adjusted or not on the basis of the data, and therefore the grabbing speed of the mechanical arm is automatically adjusted. And the situation that the service life of the mechanical arm is shortened due to the fact that the mechanical arm generates microcracks under the high-load condition is avoided.
Owner:SHENZHEN YAOKE TECHNOLOGY CO LTD

Electromechanical clutch variable inerter damper

The application belongs to the technical field of structural vibration control, and relates to a mechanical-electrical clutch variable inertial damper, which is a semi-active damping device applicable to civil structures and used for inhibiting the vibration of the structure under the action of an earthquake or wind load. The device is realized by matching a mechanical inertial system, an electrical inertial system, an energy recovery control system and an active inertial mass control system. The application ensures that the device provides an inertial force in the acceleration stage of the structure and does not provide a force in the deceleration stage of the structure. The electrical inertial system can effectively reduce the design capacity of the mechanical inertial system, and in combination with the active inertial mass control system, the semi-active variable inertial control similar to bang-bang control can be realized, and in combination with the energy recovery control system, the kinetic energy of the flywheel can be recovered in the deceleration stage.
Owner:DALIAN UNIV OF TECH

A device for processing plastic parts for automotive interiors

The application discloses a kind of plastic part processing device for automotive interior, it is related to plastic recycling processing technical field, including conveyor, the outer wall of the conveyor is fixedly connected with driving assembly, the bottom of the conveyor is provided with sliding rail, the inner wall of the sliding rail is slidably connected with slider and sliding plate, the bottom of the sliding plate is fixedly connected with the top of slider, the bottom of the slider is provided with clamping mechanism, setting clamping mechanism, by the design of magnetic ball and electromagnetic seat, magnetic ball can be electromagnetically absorbed in the inner wall of electromagnetic seat, the ball is embedded in the inner wall of electromagnetic seat using ball, realize that magnetic ball can freely rotate in the inner wall of electromagnetic seat movement, and the fixed plate connected below magnetic ball and first spring then pull connecting block and arc sleeve, arc moving plate to plastic central control frame synchronous rotation with bend, effectively balance transverse inertia force, avoid internal stress mutation, ensure that plastic central control frame keeps stable during turning process, reduce the risk of deformation.
Owner:CHANGZHOU BAOYUAN AUTO PARTS CO LTD

Deep underground structure pseudo-dynamic test method and device

The application belongs to the technical field of underground structure test, and provides a deep underground structure pseudo-dynamic test method and device, which comprises the following steps: constructing a numerical substructure and a test substructure, and setting an interaction boundary between the numerical substructure and the test substructure; in each loading process, compensating boundary prediction data according to an inertia force compensation coefficient based on the numerical substructure, loading the compensated prediction data to the test substructure, so that the test substructure outputs prediction response data and updates the stiffness of the numerical substructure, determining a target balance force based on the numerical simulation substructure according to the prediction response data, and driving the next loading process with the target balance force, when the respective boundaries of the numerical substructure and the test substructure satisfy displacement coordination and force balance, obtaining the dynamic response law of the soil-structure system. The method can accurately simulate the initial stress state of the deep underground structure, and improves the accuracy of obtaining the mechanical response law of the underground structure.
Owner:HUNAN UNIV

A digital twin-based dynamic performance digital design method of a blower

This invention belongs to the technical field of digital design of Roots blower equipment, specifically involving a digital twin-based digital design method for the dynamic performance of blowers. This method includes constructing a parametric structural model of multiple components of the blower, establishing a multi-physics coupled model encompassing aerodynamics, structure, heat, electromagnetics, and acoustics, applying dynamic boundary conditions such as flow disturbances, inertial forces, and base disturbances, constructing a digital twin model synchronized with the physical blower state, performing a master-slave strongly coupled joint solution, extracting multi-field response indices and performing normalization analysis, and finally outputting optimized design parameters for the blower through a multi-objective optimization feedback mechanism. This invention enables multi-domain balanced design among the blower's structural performance, electromagnetic response, thermal stability, and acoustic characteristics, improving modeling accuracy and parameter optimization capabilities, and is suitable for the digital development of high-reliability Roots blower equipment under complex operating conditions.
Owner:CHANGSHA BLOWER CO LTD

A device for preventing tipping over logistics containers used in logistics transportation

This utility model discloses an anti-tipping device for logistics barrels used in logistics transportation, comprising: a support assembly including a pallet and a placement slot on its top; and a first positioning mechanism, symmetrically arranged in four sets, including a left T-shaped frame and a right T-shaped frame located inside the pallet, and a fixing seat fixed inside the pallet. The clamping ends of the left and right T-shaped frames are each fixedly provided with a first stabilizing plate. A first guide rod is movably arranged inside the fixing seat, passing through the front and rear ends of the left and right T-shaped frames respectively. A first screw is fixedly provided at one end of the first guide rod. This utility model, through the first positioning mechanism, achieves multi-point rigid fixation of the logistics barrel in the horizontal direction, effectively resisting the horizontal inertial force generated when the vehicle turns or brakes, preventing the logistics barrel from shaking, shifting, or tipping over, and avoiding liquid leakage that could lead to cargo loss, environmental pollution, and safety accidents.
Owner:HEBEI BAIHUI YUANDA SUPPLY CHAIN CO LTD

Dynamic modeling method of overwater tilting wing aircraft

The invention belongs to the technical field of flight dynamics modeling in aircraft design, and particularly relates to a dynamics modeling method for an overwater tilting wing aircraft. Comprising the following steps: step 1, modeling a wing section based on a blade element theory, dividing an unmanned aerial vehicle into three parts including a propeller, the wing and a fuselage, and carrying out an experiment or CFD calculation to obtain aerodynamic data; 2, geometric parameters of a wing micro-section, a control surface, a propeller and a wing tilting shaft are obtained; 3, calculating wing aerodynamic force, propeller aerodynamic force and fuselage aerodynamic force according to the aerodynamic force data and the geometric parameters; 4, hydrodynamic force is calculated, and the hydrodynamic force comprises buoyancy, inertia force and wave disturbance force.
Owner:CHINA SPECIAL TYPE FLIER RES INST

Vibration reduction gear of hybrid engine

The vibration reduction gear of the hybrid engine comprises an outer gear ring, and a plurality of outer gear ring radial bosses are arranged on the inner circumference of the outer gear ring; a plurality of inner hub radial bosses are arranged on the periphery of the inner hub, and the inner hub radial bosses and the outer gear ring radial bosses are arranged in a staggered mode; each rubber block is embedded into a space formed by the radial boss of the outer gear ring and the radial boss of the inner hub; the limiting gasket is arranged on one side of the outer gear ring; the connecting piece is used for locking the limiting gasket and the outer gear ring, so that the limiting gasket, the inner hub flange part of the inner hub and the axial limiting flange part of the outer gear ring jointly clamp the rubber block in the axial direction, and when the inner hub does not have the rubber block relative to the outer gear ring, the relative circumferential rotation angle of the inner hub is limited to be 30 degrees. Gear transmission is changed into flexible transmission, torsional vibration and impact in the gear transmission process are subjected to energy absorption through compression of the multiple rubber blocks, torsional vibration and inertia force in the gear transmission process are reduced, gear knocking is avoided, and transmission is more stable.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD

Box-dumping-based vehicle transportation control method and device and electronic equipment

The application provides a box-dumping-based vehicle transportation control method and device and electronic equipment, and relates to the technical field of box-dumping control. A box body and a vehicle are connected through a 360-degree track, and the box body is provided with a box displacement control device. The method comprises the following steps: in response to a direction control operation on a driving direction control operation device, a direction control instruction corresponding to the direction control operation is transmitted to the box displacement control device; based on the direction control instruction, a specified vehicle body weight of the vehicle, and a front road condition image of the vehicle collected by an image collection device, an AI system is used to analyze and predict a to-be-traveled angle of the vehicle and a to-be-moved intensity of the vehicle; and the box displacement control device is used to control the movement and / or rotation of the box body on the track according to the to-be-traveled angle and the to-be-moved intensity, so as to offset the inertia intensity caused by the to-be-moved intensity and the to-be-traveled angle on the box body in advance through a second displacement of the box body relative to the vehicle.
Owner:ZHONGJIE TELECOMM