1259 results about "Windage" patented technology

The invention relates to the technical field of automobile design, and particularly discloses an automobile wind resistance optimization design method based on a machine learning model, and the method comprises the steps: collecting data of different automobile types, and carrying out the cleaning and standardization processing; constructing a wind resistance prediction model, training the model by using the preprocessed data, and minimizing a prediction error by adjusting model parameters; key design variables are selected, the variation range of the key design variables is determined, and a parameterized model is constructed; selecting sample points in a design variable space, generating a corresponding geometric model, calculating a wind resistance coefficient and establishing a sample point database; dividing sample point data into a training set and a test set, optimizing a machine learning model, searching an optimal solution in combination with an optimization algorithm, and iteratively updating the model by increasing sample points until the precision requirement is met; an optimal design variable combination is determined, an optimized automobile geometric model is generated, CFD simulation verification is carried out, and a design scheme containing detailed parameters and optimization results is output.

This application provides a wind-resistant, stable power generation agricultural-solar hybrid system, including pillars, beams, photovoltaic supports, and photovoltaic panels erected in farmland. The photovoltaic panels are equipped with a buffer mechanism and an overload release device. The buffer mechanism effectively absorbs kinetic energy and reduces the swaying amplitude and speed of the photovoltaic panels through its elasticity, and automatically resets the photovoltaic panels after strong winds. The overload release device protects the photovoltaic panels from damage caused by strong winds. This application overcomes the technical defects of existing static wind-resistant systems, reduces system wind resistance, can withstand super typhoons, provide stable power generation and irrigation, and promote agricultural production.

The invention provides a joint prediction method and system for a wind resistance coefficient and a surface pressure field of an automobile, and relates to the technical field of automobile aerodynamics. According to the joint prediction method, the pressure field and the wind resistance coefficient are predicted in the same network in parallel, and the wind resistance coefficient obtained by pressure field integration and derived from the pressure field and the wind resistance coefficient obtained by network direct regression are calibrated by physical consistency constraint. The model has physical confidence and interpretability while ensuring numerical precision, so that a key stress area can be positioned and serves an automobile modeling iteration process.

The utility model relates to an air duct structure and a cabinet machine in the technical field of air conditioners, the air duct structure comprises a main air duct, a fan, an air outlet frame and a grating, the grating is installed between the air outlet end of the main air duct and the air outlet frame, airflow in the main air duct contacts with the grating in the flowing process, the grating scatters eddy current, and the air outlet end of the main air duct is connected with the air outlet frame. Air flow blown out of the main air duct passes through the grille and then is blown to the air outlet frame, the pressure difference between the air flow and the air outlet frame is reduced, air outlet is smoother, and therefore abnormal sound is effectively eliminated. The installation position of the grille can effectively scatter the vortex area, meanwhile, installation operation of the grille is more convenient, the installation position is easy to operate, additional positioning pieces do not need to be added in the air duct to fix the grille, the grille only needs to be directly connected to the lower side of the air outlet frame or the upper side of the air outlet end, and the installation operation is convenient. The additional positioning piece is omitted, so that the smoothness of the air cavity of the main air duct is further improved, and the air resistance of the air cavity is reduced.

The invention discloses a tower crane cluster cooperative control method and system for an intelligent construction site and a medium, belongs to the technical field of tower crane control, and aims to solve the problems that existing cluster control among multiple tower cranes mainly depends on manual control, large potential safety hazards are easily generated in complex tower crane operation, and the working efficiency is high. And intelligent cooperative control of work among a plurality of tower cranes is difficult to realize. The method comprises the steps that track error prediction of a tower crane rope is conducted on current dynamic environment characteristics in a current construction area, and wind resistance-swing angle coupling error data are obtained; track intersection and coincidence judgment is conducted on the tower crane rope moving tracks of the tower crane tasks to be executed in the multiple tower cranes in the future time period, and an abnormal tower crane moving track diagram is predicted and determined; performing optimal path generation processing on the abnormal tower crane moving trajectory diagram under a federated learning framework to obtain an optimized tower crane moving trajectory diagram; and track avoidance execution processing is conducted on the risk tower crane with the track crossing risk, and a tower crane avoidance strategy of the risk tower crane is obtained.

The invention relates to the field of fan operation monitoring, in particular to a dishwasher fan operation state real-time monitoring method and system.The method comprises the steps that a current stabilization sequence and a stabilization starting point moment of a fan are obtained, and a stable current mean value and a stable current standard deviation are calculated; calculating a load intensity index of the fan; fitting according to a least square method to obtain an adjustment index, and calculating an equivalent wind resistance coefficient based on the load intensity index and the adjustment index; acquiring a center line, an upper limit and a lower limit of the control chart, and calculating a current correction value at a target moment by using EWMA; generating and sending an alarm signal in response to that the current correction value is less than the lower limit or greater than the upper limit; and in response to that the current correction value is not greater than the upper limit and not less than the lower limit, calculating the fault probability of the fan to complete monitoring. According to the technical scheme, the precision of the fan monitoring result can be improved.

The invention relates to the technical field of household appliances, and discloses a refrigeration range hood which comprises an air conditioner assembly, a refrigeration assembly and a control assembly. The range hood assembly is arranged below the air conditioner assembly and comprises an air cabinet and a range hood fan, a condensation air opening is formed in the air cabinet, and the condensation fan is connected with the condensation air opening; the range hood fan is arranged in the air cabinet; the flow guide partition plate is arranged in the air cabinet, the flow guide partition plate is matched with the inner wall of the air cabinet to form a flow guide cavity, the air inlet end of the flow guide cavity is communicated with the condensate air opening, the air outlet end of the flow guide cavity is communicated with an air inlet of the range hood fan, and the flow guide partition plate comprises an extension section and an air guide section which are sequentially arranged from top to bottom; the air guide section extends to the side wall of the air cabinet from the bottom edge of the extension section. According to the refrigeration range hood, wind resistance can be reduced, the air volume can be increased, and noise reduction is facilitated.

The invention relates to a bending moment-torque composite loading device for testing the load capacity of a steering engine, and belongs to the technical field of ammunition weapon system testing. In the device, the pressure head, the pressurizing rod and the composite loading slip ring synchronously rotate along with the rotation of the rudder wing, so that the applied pressure can be ensured to be always perpendicular to the rudder surface and is closer to the real wind resistance working condition during flight. The bending moment output device and the torque output device are coupled together through the composite loading slip ring, so that the bending moment and the torque can be loaded at the same time and are closer to the actual flight condition.

The invention belongs to the technical field of vehicle fairing control, and particularly discloses a vehicle fairing control method and system fusing oil consumption and wind resistance, a terminal and a medium. Comprising the steps that the speed, fuel consumption parameters and wind pressure parameters of a vehicle in the running process are obtained, and fuel consumption change parameters and wind pressure distribution characteristic parameters are extracted; a multivariable optimization model with the minimum comprehensive energy consumption as the target is constructed; based on the model, a model prediction control algorithm is adopted to solve the optimal control quantity of the attitude of the fairing in a prediction time domain, and control instructions of the angle and the deflection direction are generated; when environmental disturbance or attitude response deviation is detected, dynamically adjusting a target function weighting coefficient or an input penalty factor to correct control output; and adjusting the posture of the fairing in real time according to the corrected control instruction. Through fusion modeling of fuel consumption parameters and wind pressure characteristic information, predictive control and self-adaptive adjustment of the attitude of the vehicle fairing are realized, and fuel economy and aerodynamic performance can be considered under multiple working conditions.

The invention discloses a bicycle rim and a manufacturing method thereof.The bicycle rim comprises an annular rim body, and the rim body comprises a U-shaped supporting part, a connecting part connected with the two ends of the supporting part and two bead beads arranged at the two ends of the outer side of the connecting part respectively; a semi-closed tire groove used for installing a tire is defined by the connecting part and the two tire beads, the width of each tire bead is 5-10 mm, and the tire beads are provided with lightening holes. According to the bicycle rim and the manufacturing method thereof, the width of the bead of the rim is increased, so that riding resistance can be reduced for a road ring, wind resistance can be reduced for a mountain ring, and the problem of tire biting can be effectively reduced; the lightening holes are formed in the bead position, so that the width of the bead is increased, and the self weight of the rim is basically unchanged; the hollow pipe is pre-buried in the bead and integrally formed with the rim, the lightening hole structure is obtained, the conception is ingenious, and the problem that the dead weight of an existing bicycle rim is increased due to the fact that the bead width is increased is effectively solved.

The utility model relates to a cab, a chassis and a light truck, the cab comprises a driving compartment and a steering mechanism, the driving compartment is provided with a cab, the driving compartment comprises a front portion and side portions located on the two sides of the front portion, wheel openings are formed in the side portions, the wheel openings are used for being matched with front wheels, the wheel openings and the front wheels are concentrically arranged, and the steering mechanism comprises a steering wheel arranged in the cab. In the X direction, the value range of the maximum size L4 of the driving compartment is larger than or equal to 1550 mm and smaller than or equal to 1950 mm, the distance between the center point of the steering wheel and the center point of the wheel opening is L11, and the value range of L11 is larger than or equal to-65 mm and smaller than or equal to 335 mm. Wherein L11 is a negative value when the center point of the steering wheel is located on the side, close to the front portion, of the center point of the wheel opening, and L11 is a positive value when the center point of the steering wheel is located on the side, away from the front portion, of the center point of the wheel opening. According to the cab in the embodiment of the invention, the layout of the cab can be reconstructed, a design space is reserved for forming a streamline structure at the front part of the cab in a limited space, and the design of the low-wind-resistance cab is conveniently realized.

The present invention belongs to the technical field of constant temperature and humidity air-conditioning units, and in particular to a bidirectional energy-saving constant temperature and humidity air-conditioning unit. In view of the problem in the prior art that the fan power will increase once the membrane cloth humidifier is turned on, the following scheme is proposed, including a unit cover with a square tubular structure placed horizontally as a whole, wherein the interior of the unit cover is fixed with a partition frame 1, a partition frame 2 and a sealing baffle with parallel and vertical plate surfaces, an air filter cloth is provided on the surface of the sealing baffle, and an evaporator module is provided in the middle of the partition frame 2, and the space between the partition frame 1 and the partition frame 2 is a humidification space. The present invention can not only allow the airflow to quickly pass through the bell mouth during ventilation and take away the water vapor on the surface of the water-absorbing membrane cloth 1 or the water-absorbing membrane cloth 2 on both sides, but also allow the airflow to quickly and easily pass through the gap between the two adjacent membrane cloths, avoiding the traditional need for pressurization and acceleration to pass through layers of membrane cloth, thereby greatly reducing wind resistance.

The invention provides a gear wind resistance power loss prediction method and system, computer equipment and a medium, and belongs to the field of aero-engine power transmission, and the method comprises the steps: obtaining physical parameters of a to-be-predicted gear; according to the physical parameters of the to-be-predicted gear, gear structure parameters are extracted, tooth surface torque parameters and fluid mechanics parameters are calculated, and the gear structure parameters, the tooth surface torque parameters and the fluid mechanics parameters of the to-be-predicted gear are consistent with the same type of parameters in the sample space in sequence and dimension; the gear structure parameters, the tooth surface torque parameters and the fluid mechanics parameters of the to-be-predicted gear are input into a pre-trained power loss prediction model, the wind resistance power loss of the to-be-predicted gear is obtained, and the power loss prediction model is obtained through a sample space training deep learning model. Compared with numerical simulation, the method has the advantage that the power loss prediction efficiency is remarkably improved.

The invention relates to the field of vehicle control, in particular to a vehicle downhill constant-speed control method and system based on a hydraulic retarder and a storage medium. According to the ramp information and the state information of the vehicle, fitting wind resistance and road resistance coefficients of the vehicle based on a least square method; according to the wind resistance and road resistance coefficient and ramp information of the vehicle, first target brake pressure of a hydraulic retarder controller and second target brake pressure of a hydraulic retarder are calculated; calculating a proportional valve control input value, wherein the hydraulic retarder controls the vehicle speed based on the proportional valve control input value; the first target brake pressure and the second target brake pressure of the hydrodynamic retarder are calculated by fitting the wind resistance coefficient of the vehicle and the road resistance coefficient, the pressure of the working cavity is adjusted through the input value of the pressure closed-loop control proportional valve, and the precision and stability of vehicle downhill constant-speed control are remarkably improved; and it is ensured that the vehicle can still rapidly and stably maintain the target vehicle speed when the gradient changes, and the driving safety and comfort are greatly optimized.

The utility model provides a flexible photovoltaic support structure with wind resistance and shock resistance, which relates to the technical field of photovoltaic supports and comprises a bottom plate, a support body is arranged at the upper end of the bottom plate, a plurality of mounting plates are arranged at the upper end of the support body, shock absorbers are arranged at the bottom of the bottom plate, and a reinforcing device is arranged on one side of the bottom of each shock absorber. The reinforcing device comprises a containing plate, one side of the containing plate is fixedly connected with the shock absorber, expansion bolts are inserted into the two sides of the containing plate in a threaded mode, reinforcing plates are fixedly connected to the two sides of the containing plate, and fixing bolts are inserted into one sides of the reinforcing plates in a threaded mode. According to the photovoltaic support structure, the mounting plate fixed to the photovoltaic panel can be supported and reinforced, the situation that the wind resistance of the upper end, connected with the photovoltaic panel, of the support is large in windy weather, and then the connecting position of the support body and the photovoltaic panel is blown by strong wind to deform is avoided, and therefore the using effect of the photovoltaic support structure can be improved.

The utility model relates to a particulate matter sensor and induced draft equipment, which comprise a shell provided with an air inlet and an air outlet, a detection device arranged in the shell and a drainage air duct arranged in the shell, the drainage air duct comprises a first drainage air duct communicated with the air inlet, and a second drainage air duct communicated with the air outlet. The first drainage air duct is communicated with the air inlet, the second drainage air duct is communicated with the first drainage air duct, the third drainage air duct is communicated with the second drainage air duct and the air outlet, the included angle between the first drainage air duct and the second drainage air duct in the airflow direction is an obtuse angle, and the detection device is used for detecting particulate matter in the second drainage air duct. The problem that light in the external environment enters the second drainage air duct through the first drainage air duct and the detection accuracy is reduced can be avoided, the wind resistance of airflow flowing from the first drainage air duct to the second drainage air duct can be reduced through the arrangement of the obtuse angle, the problem that the airflow suddenly turns is avoided, and then the detection precision of the sensor is guaranteed.

The invention provides a swing wind-resistant stable power generation agriculture and light complementary system. The system comprises a stand column, a cross beam, a photovoltaic support and a photovoltaic panel which are erected in a farmland. The photovoltaic panel is provided with a buffer mechanism and an overload release device, the buffer mechanism can effectively absorb kinetic energy through the elasticity of the buffer mechanism and slow down the swing amplitude and speed of the photovoltaic panel, and the photovoltaic panel can be automatically reset after strong wind; the overload release device can protect the photovoltaic panel from being damaged by strong wind impact. The technical defects of static wind resistance in the prior art are overcome, wind resistance of the system is reduced, super typhoon can be resisted, power generation and irrigation can be stabilized, and agricultural production can be promoted.

The invention discloses a control method and system for an adjustable fairing and a heavy truck in the field of heavy truck driving wind resistance. The method comprises the steps that a real-time inclination angle signal of the fairing is obtained; when the vehicle is in the stable driving working condition, the driving mechanism is controlled to gradually adjust the inclination angle of the fairing according to the preset step length, and vehicle driving power data corresponding to different inclination angle signals are collected; comparing the driving power corresponding to each inclination angle signal, and determining a target inclination angle signal corresponding to the minimum driving power; according to the target inclination angle signal, a driving mechanism is started to adjust the fairing to the target inclination angle; according to the method, the inclination angle of the fairing is adjusted, maximum resistance reduction is achieved for different vehicle speeds, the inclination angle value of the fairing corresponding to the minimum wind resistance under different working conditions is calculated, the wind resistance of the whole vehicle is effectively reduced, the inclination angle of the fairing is changed when the vehicle is at different vehicle speeds, and therefore the energy consumption of the whole vehicle is reduced, and the endurance of the vehicle is improved. The economic value is relatively high.

The invention discloses a design method of an array type silencer adaptive to a main ventilation air path between a stator iron core of a hydraulic generator and an air cooler and the array type silencer, and relates to the technical field of suppression or reduction of noise of the hydraulic generator. The method comprises the steps of S1, obtaining aerodynamic noise data and airflow parameters of a main ventilation air path, S2, determining a silencing thought and a micro-perforated plate array core structure according to broadband vortex, discrete rotation, vortex falling and surge noise, S3, determining the boundary dimension and preliminarily calculating the airflow parameters, S4, designing plate parameters in combination with a micro-perforated resonance formula, and S5, calculating the noise of the micro-perforated plate array. S5, performing simulation optimization and S6, accurately accounting airflow parameters, and locking a scheme meeting requirements; the silencer comprises a shell and a plurality of micro-perforated plates, and the multiple layers of micro-perforated plates are arranged in series. The invention has the advantages of no sound absorption material, low wind resistance (the air volume attenuation is less than or equal to 5%, and the pressure loss is less than or equal to 200Pa), the noise of the main wind path is reduced by 5-7dB (A), the service life is long, the operation and maintenance cost is low, and the requirements of the main wind path are met.

The invention provides zero-leakage low-wind-resistance waste gas collecting and discharging laboratory equipment, and relates to the field of laboratory waste gas treatment.The zero-leakage low-wind-resistance waste gas collecting and discharging laboratory equipment comprises a ventilation cabinet, and an air supply box is fixedly installed in the ventilation cabinet. Flexible regulation and control of the air inlet amount are achieved through the synergistic effect of an adjusting plate and an air inlet plate, an air opening can be closed to block impurities in a non-working state, preliminary air filtering is completed through cooperation with a filtering plate, meanwhile, through the linkage design of a lead screw, a moving block, a spring A and a limiting block, the working stability of an air inlet frame is ensured, and the moving block can be driven by rotating the lead screw to compress the spring A; and convenient maintenance of the air inlet frame is realized. The motor A drives the gear set to drive the fan blades to form an effective air curtain, and the defects that traditional equipment is fixed in air volume and insufficient in leakage prevention are overcome. And finally, the flexibility and the stability of waste gas treatment are improved through deep purification of the filter box and discharge of the exhaust fan.

The invention relates to the technical field of undercarriages, in particular to a folding undercarriage device of a low-altitude aircraft, which comprises an aircraft body, a pesticide spraying mechanism for crop fertilization is arranged on the aircraft body, a height-adjustable undercarriage mechanism is arranged at the lower end of the aircraft body, and a landing buffer mechanism is arranged on the undercarriage mechanism. The landing buffering mechanism is used for reducing impact on the undercarriage mechanism at the moment of landing, a linkage auxiliary mechanism is arranged on the aircraft body, the undercarriage mechanism comprises a fixing plate body, and the fixing plate body is detachably installed on the aircraft body. By arranging the undercarriage mechanism and adopting a dynamic folding design, after taking off, the second-stage frame body retracts to drive the telescopic joint to be shortened, so that the overall height is reduced, air turbulence during flight can be effectively reduced, meanwhile, the first-stage frame body rotates to be parallel to the fuselage, the cross sectional area of the undercarriage mechanism is greatly reduced, and the overall height is reduced. And the wind resistance loss during high-speed flight can be obviously reduced.

The invention discloses a low-turbulence noise-reduction hydro-generator rotor and a hydro-generator, and relates to the technical field of hydro-generators. Inter-pole wind shields are assembled between salient poles of the rotor, the peripheral cambered surfaces of the inter-pole wind shields are consistent with the peripheral radiuses of the poles, and the inner sides of the inter-pole wind shields are attached to magnetic pole transition surfaces, provided with ventilation holes and fixed through tensioning screws; and the fans at the two ends of the rotor adopt wing-shaped fan blades such as NACA0012 / 0016 / 0018 and the like. According to the hydro-generator, a metal micro-perforated plate is assembled on a main ventilation air path between a stator iron core and an air cooler, the array resistance-resistance performance of a non-sound-absorption material conforms to a silencer type silencer, plate bodies are arranged in series, an air inlet / outlet is bent by 45 degrees, and parameters are accurately designed through a resonance formula. Rotor hidden polarization and precise noise elimination of a main air path are achieved, double noise reduction enables the noise of the whole machine to be smaller than or equal to 65 dB (A), the wind resistance is low (the air volume attenuation is smaller than or equal to 5%), heat dissipation reaches the standard, the structure is stable, the operation and maintenance cost is low, and the requirements of a large-capacity and high-rotating-speed unit are met.

The invention relates to the technical field of new energy vehicles, in particular to a new energy passenger vehicle driving range calculation method which comprises the steps that battery management system data, navigation and road condition information, driver behavior data, environment data and vehicle electric accessory data of a vehicle are collected; a vehicle movement energy consumption model and an accessory energy consumption model are established, the vehicle movement energy consumption model comprises wind resistance energy consumption, rolling resistance energy consumption and acceleration energy consumption, and the total energy consumption of the vehicle is calculated; estimating the state of charge of the battery by adopting a Kalman filtering algorithm in combination with the capacity attenuation model, and adopting corresponding correction methods according to different intervals of the SOC; and calculating the driving range of the new energy passenger vehicle according to the total energy consumption and the SOC estimation result, training the LSTM neural network according to the historical data of the driver behavior, and outputting a personalized endurance estimation value. According to the technical scheme, the actual driving range of the new energy passenger vehicle can be estimated more accurately.

The utility model discloses a heat dissipation structure of an energy storage converter, relates to the technical field of energy storage converters, and aims to solve the technical problem of poor heat dissipation of the energy storage converter. Comprising a flowing air duct, the air duct flows through an electric appliance element, heat generated in the working process of the electric appliance element is guided out, an air inlet net plate is arranged at the air inlet end of the air duct, an air outlet net plate is arranged at the air exhaust end of the air duct, at least one air guide plate is arranged in the flowing area of the air duct, and flowing air is accelerated. According to the heat dissipation structure of the energy storage converter provided by the embodiment of the utility model, the heat dissipation of the energy storage converter is optimally designed to meet the heat dissipation and high protection requirements of a product, and the heat export in the sealed cavity is improved through the structural design. Air outlet area is enlarged, air resistance of the air outlet is reduced, hot air gathering is avoided, and heat dissipation is enhanced.

The utility model discloses a severe convection weather early warning detection device, which comprises a detection assembly, a base, a vertical rod, a power distribution piece, a detection piece and a solar piece, the vertical rod is arranged on the outer side of the base, and the power distribution piece is arranged on the outer side of the base. The utility model has the beneficial effects that the worm drives the worm wheel to rotate, the worm wheel drives the gear to rotate, the gear is meshed with the toothed plate, the toothed plate is driven to move in the connecting shell, the toothed plate drives the frame to move, the frame is adjusted to a horizontal position, and the wind area is reduced, so that the wind resistance is reduced; according to the utility model, the air flow can flow away from the air guide plate and the frame through the air guide holes and the through holes, the impact force of wind power on the frame is reduced, rain and snow on the solar panel can be quickly melted and dried through the electric heating metal tubes, melted snow water can be prevented from permeating into the solar panel, and internal elements can be protected.

The invention discloses a stake car wind resistance dynamic optimization method and system based on airflow simulation, and belongs to the field of automobile pneumatic optimization. A stake car three-dimensional structure model is constructed, and spatial distribution parameters and surface roughness parameters of a stake component are extracted; establishing a multi-working-condition external flow field simulation model, and obtaining a unit area wind resistance coefficient distribution diagram; constructing a wind resistance sensitivity matrix, and identifying a high-sensitivity component; performing disturbance modeling on the high-sensitivity component, generating a local deformation configuration sample and establishing a simulation model set; parallel simulation calculation is carried out, and wind resistance coefficient and aerodynamic stress data are extracted; based on a multi-objective optimization algorithm, determining an optimal disturbance configuration; outputting a structure adjustment suggestion for guiding dynamic design optimization; according to the method, collaborative optimization of wind resistance reduction and structure safety can be achieved, and the pneumatic performance and the energy-saving level of the whole stake car are improved.

The invention relates to the technical field of automobiles, in particular to a method for correcting automobile wind resistance through a tire database, and the method comprises the steps: collecting geometric parameters such as the section width, the flatness ratio and the tread pattern of a tire, building a parameterized CAD model, carrying out the refined CFD simulation, and obtaining a wind resistance coefficient difference value of a real tire and a smooth tire. And building a mapping database of tire characteristic parameters and wind resistance correction values based on the data, and training a prediction model by adopting a random forest algorithm. In practical application, the wind resistance correction value can be quickly predicted only by inputting tire geometric parameters, and high-precision correction of a bare tire simulation result is realized. According to the method, the consistency of simulation prediction and experimental data is remarkably improved, reliable support is provided for aerodynamic performance evaluation in the vehicle model development stage, the research and development cost is effectively reduced, and the development period is shortened.

The invention provides a wind load overload automatic protection photovoltaic power generation system, which is characterized in that a photovoltaic panel is arranged on a photovoltaic bracket through a non-fixed mounting structure, and the photovoltaic panel is allowed to swing along with wind relative to the photovoltaic bracket when encountering strong wind; the photovoltaic panel is further provided with an overload release device, the overload release device can be used for limiting the photovoltaic panel in a relatively static state facing the sky when no wind or small wind exists, and the overload release device can be used for automatically releasing the photovoltaic panel when the photovoltaic panel encounters strong wind, so that the photovoltaic panel recovers the freedom of swinging along with the wind, automatic wind load overload protection is carried out, and the photovoltaic panel is prevented from being blown down. The technical defects of static wind resistance in the prior art are overcome, the wind resistance of the system is reduced, super typhoon can be resisted, and stable power generation can be achieved.

The invention relates to the technical field of aircrafts, and discloses a triphibian aircraft and a triphibian form switching method thereof. Comprising an aircraft main body, a left auxiliary body and a right auxiliary body, retractable wings are arranged between the aircraft main body and the left auxiliary body and the right auxiliary body, sliding wheel assemblies are arranged at the bottoms of the three bodies respectively, foldable rotor wing mechanisms are arranged at the tops of the left auxiliary body and the right auxiliary body, a propeller is arranged at the tail of the aircraft main body, and foldable small wings are arranged on the outer sides of the left auxiliary body and the right auxiliary body. During take-off, the wings and the winglets are unfolded, the rotor mechanisms are started, and rising is achieved; during air cruise, the sliding wheel assemblies and the rotor mechanisms are stored, the propellers are started, and smooth flight is ensured; when the unmanned aerial vehicle runs on land, the sliding wheel assemblies are opened, the rotor mechanisms are stored, the wings and the winglets are folded, wind resistance is reduced, and the propellers are started to run; when sailing on the water, the three-body structure ensures buoyancy, and the propeller is pushed to move forwards; through the three-body structure, seamless switching of air, land and water triphibian scenes is achieved, the system adapts to multiple environments, the use flexibility is improved, and the application range is widened.