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605 results about "Structural deformation" patented technology

Structural Deformation. Structural Deformation is the term given to warping, bending, twisting and springiness in structural components of a building.

Hydraulic engineering operation risk monitoring management system based on multi-sensor fusion

The invention relates to the technical field of hydraulic engineering monitoring, and discloses a hydraulic engineering operation risk monitoring management system based on multi-sensor fusion. The system comprises a data acquisition module, a data fusion module, an early warning and instruction generation module, and an instruction distribution and verification and correction module. The data acquisition module acquires structural deformation, water flow pressure and environment temperature and humidity data in real time through multiple types of intelligent sensors; the data fusion module inputs the collected data into a dynamic weighted fusion model, and generates a comprehensive monitoring index in combination with a sensor confidence coefficient weight and a historical data deviation rate; the early warning and instruction generation module triggers multi-stage early warning and generates an equipment regulation and control instruction set according to the comprehensive monitoring index and a preset safety threshold value; the instruction distribution module distributes the instruction to an execution terminal through a distributed message queue; and the verification and correction module checks terminal feedback signals by using a back propagation verification mechanism, and corrects the confidence coefficient weight of the model.
Owner:SHANXI WATER CONSERVANCY CONSTR & DEV CONSULTING CO LTD

Hydraulic synchronous intelligent control system for segmented turnover of overweight steel structure

The invention relates to the technical field of intelligent control of heavy equipment, in particular to a hydraulic synchronous intelligent control system for segmented turnover of an overweight steel structure, and discloses the hydraulic synchronous intelligent control system for segmented turnover of the overweight steel structure. According to the system, full-field strain data of a structure surface is acquired by deploying a flexible grid sensor array, and a deformation gradient topological graph is constructed to identify an instability risk area. And a dynamic fluid network model of the hydraulic system is established, fluid-solid coupling simulation is carried out in combination with deformation characteristics, and pressure pulsation transmission paths under different control instructions are predicted. And the system dynamically optimizes a data sampling strategy and network model parameters according to a prediction path, generates a hydraulic cylinder coordination action instruction subjected to pressure balance verification, and finally drives an execution mechanism to complete turnover operation. According to the scheme, full-field real-time sensing of structural deformation and dynamic coupling prediction control of hydraulic fluid are achieved, and the safety and control precision of the overweight component in the turnover process are improved.
Owner:PENGLAI JUTAL OFFSHORE ENG HEAVY IND CO LTD

Building structure deformation measurement method, system and device

The invention provides a building structure deformation measurement method, system and device, and relates to the technical field of building structure deformation measurement. The measuring method comprises the following steps: acquiring a laser point physical coordinate, an included angle between a laser emission direction and a world coordinate system and a building image; after the building image is preprocessed, laser point pixel coordinates are extracted; after the relative coordinates of the object surface laser points are calculated, solving a homography transformation matrix, carrying out perspective correction on the building image to obtain an orthographic projection image, and solving a conversion coefficient between pixels and an actual distance; inputting the preprocessed building image into a pre-trained semantic segmentation model to obtain a beam body segmentation mask and a beam body edge curve; and the actual span of the beam body is obtained through conversion of the conversion coefficient. According to the scheme, three-dimensional movement is achieved through the electric driving platform, the positioning position of the laser point can be adjusted according to the size and position of the building structure, buildings of different heights and angles are adapted, and the limitation that only building structures of specific types or sizes can be measured in the prior art is solved.
Owner:SHENZHEN YJY BUILDING TECH +1

Concave angle asymmetric double-layer negative Poisson's ratio superstructure and application thereof

The invention relates to a concave angle asymmetric double-layer negative Poisson's ratio superstructure and application thereof. A concave angle asymmetric double-layer negative Poisson's ratio superstructure comprises bearing pressing plates symmetrically arranged at the upper end and the lower end and a plurality of unit cell elements arranged between the two pressing plates, and is characterized in that the unit cell elements are arranged at equal intervals in the transverse direction and the vertical direction respectively to form an m * n array, each unit cell unit comprises a double-layer concave corner body, transverse connecting rods on the two sides and a vertical connecting rod on the upper portion, the lower portion of each double-layer concave corner body is an outer flat plate cell wall, and the ends of the transverse connecting rods between every two transversely adjacent unit cell units are connected into a whole. And the end parts of the vertical connecting rods between the vertically adjacent unit cell elements are connected with the outer flat plate cell walls into a whole. The deformation mode of the superstructure is influenced by the impact speed, when the speed is increased, the deformation mode transits from overall deformation to local deformation, different local deformation zones are generated, the superstructure has different horizontal contraction processes at different impact speeds, the negative Poisson's ratio effect is reduced along with the increase of the speed, and the local deformation zones are reduced. The superstructure can be applied to anti-impact protection parts of automobiles, airplanes and unmanned aerial vehicles and anti-impact protection parts of wearable protection devices.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Deformation monitoring method and device for concrete tower drum

The invention discloses a deformation monitoring method and a deformation monitoring device for a concrete tower drum. The deformation monitoring method comprises the following steps: synchronously acquiring wavelength drift and accompanying temperature of a pre-embedded fiber grating sensor and calibration point coordinates of external visual equipment; carrying out temperature compensation on the wavelength drift to calculate the total mechanical strain; accumulated creep is calculated based on concrete rheological characteristics and stripped from total mechanical strain, and effective elastic strain is obtained; fitting the curvature by using the effective elastic strain and reconstructing the theoretical reference displacement of the tower drum; and inputting the theoretical reference displacement and the calibration point coordinates into a Kalman filter, and outputting a final real deformation amount. According to the method, the creep component is accurately stripped, so that false deformation and false alarm in long-term monitoring are eliminated; and meanwhile, the absolute coordinates of the external visual data and the all-weather characteristics of the internal optical fiber data are combined for fusion correction, so that the problems that a traditional integration method is large in accumulative error and visual monitoring is easily interfered by the environment are solved, and high-precision and high-robustness structural deformation monitoring is realized.
Owner:HUAIBEI HUADIAN WIND POWER CO LTD

Modular self-adaptive robot device for paper folding bionics based on SMA (Shape Memory Alloy) driving

The invention discloses a modular self-adaptive robot device based on SMA driving paper folding bionics. The modular self-adaptive robot device is composed of peak folding rods, valley folding rods, SMA wires, a magnetic attraction connecting structure and a 3D printing bottom plate, and self-adaptive operation is achieved through driving-sensing-structure integrated cooperation. The SMA wires have driving and sensing functions, structural deformation is driven through PWM, resistance change of the structural deformation is measured in real time, and axial telescoping, radial telescoping and bending of the module can be controlled in a closed-loop mode without an external sensor. The device is combined based on the lever amplification principle, tiny deformation of the SMA wire is efficiently converted into large-stroke output of a mechanism, and the problem that the stroke of an SMA driver is limited is solved. A single module has three modes of radial expansion, linear actuation and torsion joint, and complex movement can be completed through combination. A plurality of modules are connected in series with a quick connecting piece through magnetic attraction, and the functions of bionic wriggling, rod cable climbing or multi-section operation arm can be achieved through time sequence programming. And a flexible and reconfigurable robot solution is provided for detection and rescue tasks in a complex environment.
Owner:JILIN UNIVERSITY

New error truncation-inverse finite element deformation reconstruction method based on sparse strain data

The invention discloses a new error truncation-inverse finite element deformation reconstruction method based on sparse strain data, and relates to the technical field of structural deformation shape reconstruction. Through error truncation of a strain missing sampling area, a deformation hypothesis theory is introduced, lateral shear strain is ignored, a conversion matrix between an inverse finite element reconstruction solution and a real structure solution is established, a dummy deformation field function is substituted into a matrix relational expression between the inverse finite element reconstruction solution and the real structure solution, and the transformation matrix is obtained. Establishing a matrix solution equation between an inverse finite element reconstruction solution and a dummy deformation field function coefficient, directly solving according to input sparse strain data to obtain an optimal dummy deformation field function coefficient, and substituting the field function coefficient back into a dummy deformation field function to obtain real deformation of the structure; according to the new error truncation-inverse finite element deformation reconstruction method based on the sparse strain data, the matrix relation between the inverse finite element reconstruction solution and the real solution of the structure is constructed, the theoretical format is simple, and the applicability is high.
Owner:WUHAN UNIV OF TECH

Mass flowmeter measurement compensation method and system combined with pipeline stress sensing

The invention provides a mass flow meter measurement compensation method and system combined with pipeline stress perception, and relates to the technical field of instrument correction. The method comprises the steps that an original stress data set is obtained; constructing a stress characteristic parameter set; constructing a sensor parameter set; based on the stress characteristic parameter set and the sensor parameter set, calculating the stress variation of the pipeline in the axial direction, the radial direction and the torsion direction to obtain a stress variation data set; utilizing the stress change data set and the sensor parameter set to establish a coupling model of the pipeline stress change to the vibration frequency and the phase signal of the sensing pipe, and calculating a corrected mass flow value; according to the comparison result of the corrected mass flow value and the calibration point in the long-term operation process, a parameter optimization algorithm is applied to conduct self-adaptive adjustment on the coupling coefficient, and coupling model optimization is achieved. The technical problem of measurement deviation caused by external stress, structural deformation and dynamic load in the prior art is solved.
Owner:DALIAN METERN MEASUREMENT & CONTROL SYST CO LTD

Intelligent monitoring and early warning method and system for dangerous large project on building construction site

PendingCN121684637AData processing applicationsStructural deformationDensity analysis
The invention discloses an intelligent monitoring and early warning method and system for a dangerous large project on a building construction site, and the method comprises the steps: carrying out the fusion processing of multi-source data, such as displacement, inclination and axial force, collected by edge Internet of Things equipment, extracting the characteristics of structural deformation and load change, and constructing a comprehensive situation representation; a high-risk area and a safety area of a construction site are identified by adopting clustering analysis, a spatial proximity relationship between the areas is established, a risk coupling degree is calculated, and a differentiated monitoring strategy is delimited according to the spatial proximity relationship; performing time sequence density analysis on the abnormal event data, fitting a risk evolution curve, positioning a situation mutation node, and establishing association mapping of construction conditions and risk steps; according to the method, a transmission path is tracked based on a risk attenuation rule, a preliminary early warning sequence is generated, an early warning trigger threshold value is determined through adaptive grading and boundary matching, a graded early warning instruction is output after gradient verification, and timely and accurate early warning information can be provided for safety management and control of dangerous engineering.
Owner:HUAREN CONSTR GROUP

Foundation pit supporting structure deformation real-time early warning method and device

The invention provides a real-time early warning method and device for deformation of a foundation pit supporting structure, and the method comprises the steps: transmitting displacement monitoring data and stress monitoring data, which are collected in real time, to a cloud analysis platform based on a fiber grating sensor group installed at a key part of the foundation pit supporting structure; the cloud analysis platform performs fusion analysis on the displacement monitoring data and the stress monitoring data based on a displacement-stress correlation model to obtain a deformation trend of the foundation pit supporting structure; and when the cloud analysis platform judges that the deformation trend is close to a preset safety limit value, an early warning signal is automatically sent out, and a targeted reinforcement suggestion is generated and pushed to an associated terminal. According to the method, the defects that the accuracy is insufficient and interference is easily caused during current data monitoring, and the deformation prediction is inaccurate are overcome.
Owner:ZHONGCHENG RURAL ECOLOGICAL ENVIRONMENTAL PROTECTION ENG CO LTD

Steel-making converter carbon brick masonry hoisting device and using method thereof

The invention discloses a steelmaking converter carbon brick masonry hoisting device and a use method thereof.The steelmaking converter carbon brick masonry hoisting device cooperates with a steelmaking converter body and a steelmaking converter workshop oxygen lance replacement electric hoist for operation, and comprises a lifting unit, a conveying unit, a construction platform unit and a transportation trolley; the auxiliary function assembly is integrated on all the units to achieve precise limiting, safety protection and automatic control, and the lifting unit is specifically arranged on the outer side area, corresponding to a furnace body gate, of a steelmaking converter platform. The U-shaped limiting assembly is arranged at the top of the lifting unit, the first positioning baffle and the second positioning baffle define the U-shaped groove matched with the transport trolley in width, the length difference value of the first positioning baffle and the second positioning baffle is consistent with the height of the transport trolley, the upper portion and the lower portion of the trolley can be limited, and deviation in the transfer process is avoided; the first buffering protection pad and the second buffering protection pad arranged on the U-shaped limiting assembly can effectively absorb impact force generated when the trolley makes contact with the baffle, and structural deformation and carbon brick collision damage are prevented.
Owner:ANGANG CONSTR CONSORTIUM

Real-time monitoring method and system for deformation of surrounding rock and supporting structure in construction period

The invention discloses a real-time monitoring method and system for deformation of surrounding rock and a supporting structure in a construction period. The method comprises the following steps: acquiring attitude angle change data of a radar platform in pitching and rolling directions in real time through a high-precision tilt angle sensor; calculating an attitude angle variation of the attitude angle change data, comparing the attitude angle variation with a preset threshold value, and if the attitude angle variation is smaller than the preset threshold value, determining that the radar platform is stable; performing time sequence analysis on the initial deformation data by using an LSTM neural network model, predicting a surrounding rock deformation trend, identifying an abnormal deformation mode by using an anomaly detection algorithm, calculating a surrounding rock risk level based on a random forest classifier, generating a displacement cloud picture, calculating a convergence rate and positioning a maximum displacement point; and calculating a convergence rate and positioning the maximum displacement according to the displacement cloud picture to generate a risk prediction report, and triggering a multi-stage intelligent alarm. Dependence on external manual rechecking is reduced, and personal errors and labor intensity are reduced.
Owner:SHANXI PROVINCIAL TRANSPORTATION CONSTR ENG QUALITY INSPECTION CENT (CO LTD) +1

Transmission system and engineering machinery

The invention belongs to the technical field of engineering machinery, and discloses a transmission system and engineering machinery. The transmission system comprises an integrated shell, a motor assembly, a brake assembly and a speed reducer assembly, the motor assembly, the brake assembly and the speed reducer assembly are arranged in the integrated shell and distributed in the first direction, an output piece of the motor assembly is in transmission connection with an input piece of the speed reducer assembly through the brake assembly, and an output piece of the speed reducer assembly is connected with the hub. The integrated shell is provided with a cooling channel set, and the cooling channel set can conduct heat dissipation on the motor assembly, the brake assembly and the speed reducer assembly at the same time. By arranging the integrated shell, the structure of a transmission system can be simplified, the cost can be reduced, the machining consistency is good, the supporting rigidity is better, and transmission errors caused by structural deformation are reduced; the cooling channel group is arranged on the integrated shell, so that the motor assembly, the brake assembly and the speed reducer assembly can be cooled at the same time by only one cooling system, the utilization rate of the cooling system is improved, the cooling efficiency is high, and the service life of the system is prolonged.
Owner:柳工柳州传动件有限公司 +1

Hydraulic engineering safety monitoring method and system

The invention relates to the technical field of fault prediction, in particular to a hydraulic engineering safety monitoring method and system, and the method comprises the following steps: collecting three-dimensional coordinate displacement data of all monitoring points of a hydraulic engineering on a continuous time sequence, and organizing the data of discrete monitoring points distributed on a dam corridor into a spatio-temporal data matrix; according to the method, the three-dimensional coordinate displacement data of all the monitoring points are collected on the continuous time sequence, the discrete monitoring point data distributed on the dam gallery are organized into the spatio-temporal data matrix, and then the spatial correlation feature matrix is constructed, so that the spatial deformation correlation between the monitoring points is systematically quantized, and the accuracy of the spatial deformation correlation between the monitoring points is improved. And the misjudgment risk caused by information splitting in traditional monitoring is reduced. The spatial correlation feature matrix is subjected to eigenvalue decomposition, a deformation mode vector set is established, and eigenvalues are normalized to generate a quantitative deformation mode set, so that the contribution degree of primary and secondary modes of structural deformation is depicted, and the key deformation trend can be identified.
Owner:HUAIAN CHUNXIN ENGINEERING CONSULTING CO LTD

Historical building repairing method and system based on multi-source data fusion and AI diagnosis

The invention discloses a historical building repairing method and system based on multi-source data fusion and AI diagnosis, and belongs to the technical field of historic building repairing. According to the method, the multi-source data of the historical building are integrated, the digital twinborn model of the historical building is constructed, defect identification and state evaluation are performed on the digital twinborn model based on the AI diagnosis algorithm, the repairing scheme of the historical building is generated, the repairing effect is fed back in real time through the digital twinborn model, the multi-source data cover full dimensions, and the repairing efficiency is improved. The model restores details of building components and can simulate structural deformation under the load effect and material attenuation caused by the environment, real-time data mapping enables the model to synchronously reflect the state of a solid building, defect danger coefficients are calculated through multi-parameter fusion, the types and positions of defects such as structural deformation and material degradation can be automatically recognized for generation of differentiated repairing schemes, and the method has the advantages of being high in practicability and easy to popularize. Hidden defects are prevented from being missed in manual detection, risk quantification is achieved by combining defect danger coefficients with weight distribution, and the generated scheme better fits the actual defect condition of historical buildings.
Owner:HARBIN UNIV OF SCI & TECH

Method for synchronously monitoring surrounding rock deformation and supporting structure deformation in tunnel construction

The invention belongs to the technical field of tunnel construction deformation monitoring, and particularly discloses a tunnel construction surrounding rock deformation and support structure deformation synchronous monitoring method, which comprises the following steps of: arranging monitoring point pairs of surrounding rock and support structures on a tunnel physical monitoring section, synchronously acquiring deformation data by using the monitoring point pairs, and then executing graded time synchronous verification; through a dual synchronization verification mechanism, the problem of time misalignment is effectively eliminated, and it is also ensured that data used for collaborative deformation analysis has real and reliable time sequence consistency in the physical sense. Meanwhile, the surrounding rock displacement and support stress response curves of the same monitoring point pair are superposed under a unified time axis on the basis of completing time synchronism verification, the coupling relation between the morphological characteristics and the time sequence is comprehensively analyzed, the deformation cooperation state at the point is accurately judged, refined deformation behavior analysis based on the physical position is achieved, and the accuracy of deformation behavior analysis is improved. The early-stage precursor of collaborative degradation can be captured, and the timeliness of risk early warning is remarkably improved.
Owner:GUANGXI WATER RESOURCES ALLOCATION CO LTD AROUND BEIBU GULF +1

Simulation calculation method for studying influence of pore structure deformation on underground aquifer hydrogen storage efficiency

The invention relates to a simulation calculation method for researching the influence of pore structure deformation on the hydrogen storage efficiency of an underground aquifer, through the combination of a solid mechanical simulation process and a CFD (computational fluid dynamics) simulation process, the simulation system can simulate the influence on the hydrogen storage efficiency of the underground aquifer due to the production of internal fluid and the reduction of pore pressure in the reservoir exploitation process. The process that the original stress balance state of the reservoir is damaged, and consequently the pore structure of the reservoir is deformed is illustrated, and meanwhile, the transportation and storage process of hydrogen in the aquifer under the condition that the pore structure is deformed is illustrated. The distribution condition of the fluid at different time is analyzed by calculating the flowing speed of the fluid and the hydrogen storage amount in the porous medium, and then systematic analysis is carried out on improvement of the underground aquifer hydrogen storage technology. The method is accurate in result, high in convergence, easy to operate and high in reliability, and shows good application value in simulation research of underground aquifer hydrogen storage.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method for compensating influence of net rack deformation on inner molded surface precision

The invention provides a method for compensating influence of net rack deformation on inner profile precision, and belongs to the technical field of wind tunnel body inner profile construction. A minimum dominating set algorithm is adopted to optimize sensor layout to construct a three-dimensional deformation monitoring network, and a pre-arching compensation optimization function is used to calculate a preset elevation compensation value; in the net rack splicing process, splicing errors are corrected in real time through a structural deformation self-adaptive compensation model, displacement synchronization in the lifting process is ensured through a synchronous hydraulic lifting system and a lifting deformation control algorithm, and after a net rack is in place, the actual geometrical shape of an inner molded surface is obtained through a three-dimensional laser scanning technology. According to the deviation value, comprehensive compensation measures of supporting jig frame elevation adjustment, temporary supporting structure arrangement, follow-up construction load distribution control and net rack node position fine adjustment are adopted for deformation compensation, and the technical problem that due to net rack deformation, the geometric accuracy of the inner profile of the lower hanging cast-in-place slab is difficult to control is solved.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Intelligent control method and system for structural deformation of intelligent coal preparation equipment based on dynamic data fusion

The application discloses a kind of intelligent control method and system of structural member deformation of intelligent coal preparation equipment based on dynamic data fusion, specifically related to structural member processing technical field, comprising: step 1: the actual position of the nth structure to be processed when reaching the specified position is recorded in real time;Step 2: whether the nth structure to be processed occurs processing position deviation is judged according to the specified position and the actual position, if no processing position deviation occurs, then n=n+1, and return to step 1;Step 3: the processing data of the mth deformed structural member is obtained, and the actual deformation data of the mth deformed structural member is predicted;Step 4: the correction processing parameter of the mth deformed structural member is obtained, and the mth deformed structural member is processed to the specified position according to the correction processing parameter, m=m+1, and return to step 3;The application can monitor and feedback the state and position change of structural member in real time during processing, to ensure that deviation can be reacted in time during processing.
Owner:YHD

High-altitude in-situ assembly construction method for special-shaped bent and twisted steel columns

The invention relates to the technical field of building construction, and provides a special-shaped bent and twisted steel column high-altitude in-situ assembly construction method which comprises the following steps: mounting a root steel column on a foundation steel column; first supporting jig frames are installed on the two sides of the root steel column, and the first supporting jig frames are fixed to the root steel column; a branch steel column is installed on each of the two sides above the root steel column, each branch steel column is fixed to the corresponding first supporting jig frame, and the lower surface of the outer wall of the top end of each branch steel column is connected with the top end of the corresponding first supporting jig frame in a matched mode; second supporting jig frames are installed on the outer sides of the first supporting jig frames, and the second supporting jig frames are fixed to the corresponding first supporting jig frames; a bent steel column is correspondingly installed at the top end of each branch steel column, and the top end of each second supporting jig frame is connected with the lower surface of the outer wall of the bent part of the corresponding bent steel column in a matched mode; and the cross beam steel column is mounted between the two bent and twisted steel columns. The problems of structural deformation, stress concentration and the like can be effectively avoided, and construction efficiency and construction safety are guaranteed.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD +5

Telescopic discharging platform and using method thereof

The invention discloses a telescopic discharging platform and a using method thereof, and relates to the field of building construction.The telescopic discharging platform comprises a mounting frame unit, a movable frame, a supporting rod unit, an H-shaped steel frame and a supporting unit, the modular H-shaped steel frame and reinforced angle steel cross beam combined design is adopted, dynamic supporting compensation is achieved in cooperation with a damper and a telescopic air cylinder, and dynamic load impact is effectively absorbed; and structural deformation is avoided. The platform adopts a folding movable frame, a plug-in type supporting unit and standardized bolts for connection, field assembly is convenient and fast, various monitoring devices such as a platform pressure sensor, a horizontal sensor and a supporting pressure sensor are integrated, data such as load, inclination angle and supporting state are collected in real time, dynamic safety evaluation is achieved, the system automatically judges the load state, and the safety of the system is guaranteed. Graded early warning is triggered, a locking air cylinder is controlled in a linkage mode, a power source is cut off, and active safety protection is achieved.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP SOUTH CHINA CO LTD

Structural deformation monitoring device and monitoring method

The invention discloses a structure deformation monitoring device and method, and the device comprises a plurality of measurement units which are disposed at different measurement point positions of the surface of a to-be-measured structure, and each measurement unit comprises an angle measurement part used for measuring an angle; the power supply unit is used for supplying power to the plurality of measuring units; the data transmission unit is used for transmitting measurement data of the measurement unit to the data processing unit.
Owner:ROAD & BRIDGE INT CO LTD +1

Dynamic performance testing device and method for electromagnetic shielding cabinet

The invention relates to the technical field of electromagnetic shielding cabinet testing, in particular to a dynamic performance testing device and method for an electromagnetic shielding cabinet, and the device comprises an environment testing cabin which is used for placing a to-be-tested cabinet and providing a controlled electromagnetic background environment; the dynamic load simulation system is mechanically connected with the to-be-tested cabinet and is used for applying physical excitation with preset strength to the to-be-tested cabinet so as to simulate structural deformation of the to-be-tested cabinet in a working state; and the signal transmitting system comprises a transmitting antenna arranged outside the to-be-tested cabinet and is used for generating an electromagnetic signal covering a preset frequency band. The dynamic load simulation system simulates vibration, cabinet door opening and closing and other actual dynamic working conditions, the temperature and humidity adjusting module is combined to simulate different climatic environments, meanwhile, the high-speed synchronous triggering module is used for achieving high-precision synchronization of dynamic load applying, electromagnetic signal transmitting and data collecting, multi-working-condition collaborative simulation and precise synchronous testing are achieved, and the testing efficiency is improved. And the authenticity and the reference value of a test result are greatly improved.
Owner:CHANGZHOU HENGLI ELECTROMAGNETIC SHIELDING EQUIP CO LTD

A subway existing line building waterproof system lap joint construction method

This invention discloses a method for overlapping construction of waterproofing systems in existing subway lines. It relates to the field of underground engineering waterproofing construction technology and includes: Step 1, current status investigation and deformation assessment; Step 2, overlapping structure system design; Step 3, key material selection and process matching; Step 4, refined overlapping construction process; and Step 5, full inspection after each process. This invention's method for overlapping construction of waterproofing systems in existing subway lines, through Step 1, involves structural deformation monitoring and analysis and diagnosis of the existing waterproofing layer; Step 2, involves deformation adaptation structure design and differential deformation compensation design; Step 3, involves material selection and process innovation; Step 4, involves base treatment, interface treatment, expansion joint and node construction, and reinforcement layer construction; and Step 5, involves process inspection. This method, tailored to the characteristics of existing subway lines, enables the effective combination of different waterproofing materials, adapts to continuous deformation, and ensures long-term reliability.
Owner:CHINA RAILWAY 16TH BUREAU GRP CO LTD +2

Bank hidden danger intelligent identification and risk assessment method based on multi-modal perception of walking robot

This invention relates to the field of intelligent technology for identifying hidden dangers on reservoir and river / lake embankments, specifically to a method for intelligent identification and risk assessment of embankment hidden dangers based on multimodal perception using a walking robot. The method involves a quadruped robot equipped with multiple sensor modules autonomously inspecting reservoir and river / lake embankment areas to collect multimodal data from the embankment surface. This multimodal data is then transmitted to a data processing center. Based on this data, the types and locations of hidden dangers on the embankment surface are identified. These hidden danger types include cracks, seepage or piping, settlement, and structural deformation. The types and locations of these hidden dangers are quantitatively analyzed to obtain quantitative results. Based on these results, a risk assessment report, a visual map, and an early warning are generated. This invention improves the spatial coverage accuracy and temporal synchronization of data acquisition, and possesses higher sensitivity and complementarity in identifying hidden danger types such as embankment cracks, seepage, and deformation, providing a perceptual foundation for subsequent analysis.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Battery pack and powered device

The application provides a battery pack and a power utilization equipment, and relates to the technical field of batteries. The battery pack comprises: a battery pack; and a shell comprising: a bottom frame, the bottom frame having a containing cavity, the containing cavity having a bottom opening, a support flange being arranged at the bottom opening of the bottom frame, and the battery pack being arranged in the containing cavity and supported on the support flange; wherein a bearing safety factor S of the support flange satisfies: S <= 1. The battery pack provided by the application has the advantages of light weight, improved structural strength and stability, improved load dispersion capacity, and avoidance of structural deformation caused by stress concentration.
Owner:BYD CO LTD

A method for designing a tuned mass damper structure

The application relates to a design method of a mass-spring damper vibration reduction structure, which can realize accurate and efficient control of specific multi-order and high-order modal responses of the structure, selects relative deformation of a mass-spring system installation position as a main degree of freedom, targets the shape of a structure deformation as a vibration mode of the structure, decouples a multi-degree-of-freedom original structure into a plurality of main degree-of-freedom systems of additional masses, calculates mass-spring system parameters required by a control target mode through an analytical expression, and determines an arrangement position. Compared with the prior art, the application can accurately reduce the response of a target mode without changing the period and vibration mode of other modes, and has the advantages of high precision, low calculation amount and easy realization.
Owner:TONGJI UNIV

Joint correction method and system for GNSS (Global Navigation Satellite System) non-structural deformation and storage medium

The invention discloses a joint correction method and system for GNSS (Global Navigation Satellite System) non-structural deformation and a storage medium. According to the method, GNSS pseudo-range and carrier phase observation data and precise products such as a precise orbit and clock correction are obtained, a three-component displacement time sequence caused by a non-tidal atmospheric load, a non-tidal ocean load and a land hydrological load and a temperature-driven thermoelastic displacement time sequence are constructed, and the three-component displacement time sequence and the temperature-driven thermoelastic displacement time sequence are unified to a reference frame and a time system consistent with GNSS calculation. After interpolating the non-structural displacement vector to an observation epoch according to time, converting the non-structural displacement vector to a geocentric rectangular coordinate system from a site local coordinate system ENU, and projecting the non-structural displacement vector to a sight line direction from a satellite to an observation station reference point to form an equivalent geometric distance correction item; the correction terms are respectively applied to pseudo-range observation and carrier phase equivalent meter domain observation in the form of the same domain as observation, and then GNSS daily arc precise calculation is performed to output a coordinate time sequence, and preferably, the method can be used for a precise single-point positioning integer ambiguity fixing technology.
Owner:WUHAN UNIV

Supporting device and aircraft wing box structure deformation load loading method

The invention discloses a supporting device and an aircraft wing box structure deformation load loading method, and relates to the technical field of aircraft structure design verification. The supporting device comprises a mounting base body; the multiple first driving assemblies extend in the first direction and are arranged on the mounting base body at intervals in the second direction; the multiple load applying assemblies are arranged on the mounting base body in a sliding mode and located above the first driving assembly; the plurality of load applying assemblies are in one-to-one correspondence with the plurality of first driving assemblies and are in transmission connection with the first driving assemblies; the first driving assembly can drive the load applying assembly to move in the first direction; the wing box structure is arranged above the load applying assembly; the multiple load applying assemblies can be detachably connected with the multiple connecting joints of the wing box structure correspondingly and can move to different positions in the second direction so as to apply deformation loads to the wing box structure. The supporting device is used for conveniently applying a deformation load to an aircraft wing box structure in an aircraft movable wing surface load experiment, the test period is shortened, and the test cost is saved.
Owner:SHANGHAI AIRCRAFT MFG

Front plate of clothes treating equipment and clothes treating equipment

The utility model relates to the field of clothes treatment equipment, in particular to a front plate of clothes treatment equipment and the clothes treatment equipment, and aims to solve the problems that when an existing clothes treatment equipment is transported through a trailer, shaking and structural deformation are likely to happen. In order to achieve the purpose, the front plate of the clothes treating equipment comprises a front plate body and an extending edge, the extending edge is formed at the bottom of the front plate body and extends downwards, the extending edge is used for being connected with a bottom plate of the clothes treating equipment, and the extending edge does not protrude out of the bottom plate. As the extending edge does not protrude out of the bottom plate, when the trailer is inserted from the front face of the clothes treating equipment, a stress point is transferred to a large-face area of the bottom plate. The large surface of the bottom plate can disperse external force more uniformly than the extending edge, so that the bottom plate can bear larger pressure without generating local deformation. And the stress distribution of the whole equipment is more uniform, the shaking and inclination of the equipment in the transportation process are reduced, and the equipment is kept stable.
Owner:QINGDAO HAIER DRUM WASHING MACHINE CO LTD