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147 results about "Technical Guide" patented technology

A document that provides basic information or instruction related to performing a specialized skill or task.

Construction method of guiding informationization prefabricated member based on BIM (Building Information Modeling)) technology

The invention provides a construction method of guiding an informationization prefabricated member based on a BIM (Building Information Modeling)) technology. The construction method comprises the following steps: step 1, carrying out three-dimensional modeling; step 2, detecting collision and optimizing adjustment; step 3, carrying out production construction simulation; step 4, generating a detail list; step 5, generating construction cost information; step 6, performing information statistics; step 7, prefabricating and machining; step 8, manufacturing a two-dimensional code label; and step 9, marking the prefabricated member with a two-dimensional code. The BIM technology and a two-dimensional code technology are combined in house industrialization and the two-dimensional code label is stuck to the prefabricated member; when a two-dimensional code instrument is used for scanning the two-dimensional cod, construction cost information and material utilization conditions can be known and the production of the informationization prefabricated member can be realized; and personnel allocation of three major parts including member design, member configuration and member production is clear and a production process is reasonable.
Owner:四川蓝本数字建造科技有限公司

Aggregation air conditioning load scheduling method based on temperature set value adjustment

The invention discloses an aggregation air conditioning load scheduling method based on temperature set value adjustment. The method comprises the following steps: (1) acquiring the temperature set value and outdoor temperature prediction value of each air conditioner aggregation group through a bilateral information channel; (2) adjusting and estimating the load increase / decrease scheme of each air conditioner aggregation group based on the temperature set values; (3) acquiring a load increase / decrease target issued by a superior scheduling department; (4) establishing an aggregation air conditioner scheduling decision model, and solving; (5) issuing an air conditioner control command through the bilateral information channel. By adopting the aggregation air conditioning load scheduling method, load increase / decrease service can be provided for electric power system scheduling on the premise of not influencing the user comfort by using air conditioning equipment of a user, so that the user turns from an electric energy user to a participant of an electric power system and participates in running of the electric power system; meanwhile, by using the method, technical guidance can be provided for the innovation of the scheduling mode of a power grid scheduling department.
Owner:SOUTHEAST UNIV

Remote internet technical guidance/education distribution system using practitioner's vision, and guidance system using communication network

There is disclosed a system of providing technical guidance and instruction by utilizing two zoom lens equipped auto focus CCD cameras placed directly in front of the instructor's left and right pupils and communication networks, such as internet. More specifically, a business system is disclosed which distributes technical guidance and instruction on medical surgeries and other highly precision oriented technical work performed in person, and / or an education guidance system which a specific client performs a medical surgery or other highly precise and technical work. In addition, the business system will have the capability of settling tuition / instruction fees which arise from providing the technical guidance and instructions, recruiting potential students, and settlement of payments to the instructors.
Owner:TAKAHASHI ATSUSHI

Parallel pipe jacking construction simulation device

InactiveCN102278117ARealize laboratory researchPipe laying and repairTunnelsEngineeringTechnical Guide
The invention discloses a parallel pipe jacking construction simulation device, belonging to the technical field of constructional engineering. The simulation device comprises a simulation box, connecting pipe junctions, a support mechanism, a construction simulation mechanism and a testing module, wherein a simulation soil body is arranged in the simulation box; a plurality of connecting pipe junctions are inserted in parallel into the simulation box; the support mechanism and the construction simulation structure are arranged at the two ends of each connecting pipe junction respectively; and the testing module is connected with the simulation box. By adopting the simulation device, parallel pipe jacking construction of various different parameters can be simulated and tested under the conditions of large diameters, long distances, complex stratums, river minimum over-burden, and the like, technical guidance is provided for field construction, and experience is provided for the research of future pipe jacking construction under similar conditions.
Owner:SHANGHAI JIAO TONG UNIV

Thermal power generation boiler intelligent combustion optimizing system and realizing method thereof

The invention aims to provide a thermal power generation boiler intelligent combustion optimizing system and a realizing method thereof, belonging to the relevant technical fields of energy sources, environmental protection, software information, and the like. The system mainly comprises a human-computer interface module and an intelligent algorithm subsystem, wherein a boiler operator can configure relevant parameters of coal species, and the like by the human-computer interface module, and the human-computer interface module can provide an optimized target for the whole system and clearly display an optimized model predicted by the system; and the intelligent algorithm subsystem generates a combustion optimizing model under the guide of the human-computer interface module according to information provided by a distributed control system (DCS) and an environmental pollutant monitoring module. The invention can provide the boiler performance optimized real-time online analyzing function for a front-line staff of a power plant, analyze the optimized parameter and the optimized target of a boiler system by the system and provide a concrete performance optimizing measure and a technical guide.
Owner:陶晓鹏 +1

CATIA (Computer-graphics Aided Three-dimensional Interactive Application) three-dimensional model establishing method for railway simple-support bridge

ActiveCN104778334AFacilitate management inquiriesAvoid duplication of numbersBridgesSpecial data processing applicationsQuality by DesignComputer module
The invention relates to a three-dimensional modeling technology and discloses a CATIA (Computer-graphics Aided Three-dimensional Interactive Application) three-dimensional model establishing method for a railway simple-support bridge, for a purpose of improving the design quality and the design efficiency. The CATIA-based three-dimensional model establishing method comprises the following steps: firstly, formulating a data naming rule for completely eradicating number repetition of parts, and carrying out distinct data structure division for a purpose of better design after the strict data naming rule is formulated; then, erecting a framework to provide accurate reference information for subsequence design; then, establishing corresponding parameters and functions and making templates of various parts and various types by using the established framework information, then calling the templates to finish establishment of the model, measuring work amounts and sizes of various parts and hanging information of the work amounts and sizes of various parts under the corresponding templates, and finally finishing two-dimensional drawing output under a CATIA engineering drawing module. The CATIA-based three-dimensional model establishing method is applicable to rapid and accurate establishment of the three-dimensional model of the railway simple-support bridge, and provides a technical guidance for actual construction.
Owner:CHENGDU XIMENG TEKE TECH DEV CO LTD

Pig-keeping system capable of intelligently monitoring environments, and monitoring method thereof

The invention provides a pig-keeping system capable of intelligently monitoring environments, and a monitoring method thereof. The pig-keeping system comprises a microcontroller in connection with a clock module; the microcontroller is in connection with temperature and humidity sensors for monitoring pig house environments, and ammonia gas, hydrogen sulfide and concentration detection sensors; the microcontroller is also in connection with a drawing fan, a purge valve, an infrared lamp, and forage feed and drinking-water valve control relays. Each relay is in connection with associated facilities. The monitoring method comprises: the microcontroller storing ammonia gas, hydrogen sulfide and carbon dioxide content set values, temperature and humidity set values, cleaning time, and feeding and water supply time; and starting associated relays to perform cleaning, exhausting, heating, humidification, food and water supply, etc. according to set parameters. The pig-keeping system can monitor independently, operate efficiently, save manpower and resources, guarantee sanitation, reduce costs, and improve farming efficiency; a plurality of systems are in wireless connection with a host computer to accept technical guidance and to boost a management level; set parameters of each system can be automatically adjusted, or controlled by the host computer.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Production line monitoring method, remote client, server and upper computer

The invention provides a production line monitoring method, a remote client, a server and an upper computer. The method comprises the following steps that: S200, the remote client sends a monitoring request message to a server; step S300, the server obtains a response message corresponding to the monitoring request message according to the monitoring request message and based on the result of information interaction between the server and the upper computer; and the server sends the response message to the remote client. With the production line monitoring method, the remote client, the server and the upper computer provided by the invention adopted, professional and technical personnel or operating personnel can conveniently carry out remote monitoring and remote control on a production line and can timely provide technical guidance for a site through the remote client, and therefore, centralized maintenance can be realized, and the security of the operation of a system can be improved, the work efficiency and operation condition of factories can be improved, and social economic benefits can be increased.
Owner:BEIJING NEW BUILDING MATERIALS PLC

Method for evaluating high-temperature softening-melting dropping properties of iron-bearing burden

The invention relates to a method for evaluating high-temperature softening-melting dropping properties of iron-bearing burden and provides a novel evaluation way for high-temperature softening-melting dropping properties of the iron-bearing burden. The evaluation comprises evaluation of lump ore, pellet, sintering ore, comprehensive burden and metalized iron-bearing burden. The method comprises division of iron-bearing burden softening-melting dropping temperature regions, a calculation method of property characteristic value in the regions, and evaluation of iron-bearing burden softening-melting dropping properties, and provides technical guide and support for evaluating the high-temperature softening-melting dropping properties of the iron-bearing burden. By the method, the size of the iron-bearing burden regions, and the pressure difference and shrinkage rate of material columns can be intuitively reflected, evaluation on the softening-melting dropping properties of the novel blast furnace burden and the influence of the softening-melting dropping properties on a softening-melting zone is facilitated, and significance for guiding the regulation of the upper part of the blast furnace is made.
Owner:UNIV OF SCI & TECH BEIJING

Energy management system

The invention relates to an energy management system which comprises an energy meter connected with an energy supplying system and a data acquisition controller connected with the energy meter and further comprises an energy management main station, an energy management sub station and an energy management server, wherein the data acquisition controller is connected with the energy management sub station, the energy management sub station is connected with the energy management main station, and the energy management main station is connected with the energy management server. By acquiring energy consumption data of an onsite device, accurate operation conditions of the device can be obtained, the energy consumption data can be converted into graphical statements in various forms, the obtained energy consumption data are analyzed according to requirements, energy planning management and tracking are conducted, technical guide can be provided for optimal economical operation of the device, and the aims of saving energy and improving energy utilization efficiency can be achieved.
Owner:SHANGHAI NENGYU TECH DEV

Underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system

ActiveCN104878701AWith automatic aiming functionAvoid manual aiming errorsBridge erection/assemblyLaser targetSynchronous control
The invention provides an underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system which comprises a rearview prism, a laser target unit, a laser total station, a synchronous controller, a hydraulic jacking system and a main control computer. The initial posture and a theoretical design axis of a jacking bridge and culvert are determined through rearview orientation; the laser total station conducts tracking measurement on a target prism; the main control computer analyzes collected data and determines the real-time posture of the jacking bridge and culvert. When the horizontal deviation of the jacking bridge and culvert reaches an early warning value, the main control computer sends out a command, and deviation is corrected by adjusting the hydraulic jacking system. The underneath pass existing railway bridge and culvert jacking horizontal guiding and deviation correcting system is a laser guide and deviation correcting system and comprehensively utilizes the surveying and mapping technology, the laser sensing technology, the computer technology and the mechanical-electronic technology to guide jacking construction of the bridge and culvert, an advanced technological tool and an operation means are provided for mechanical construction of jacking of the bridge and culvert, the traditional operation mode is greatly changed, and favorable conditions are created for modern, automatic and digital development of measurement.
Owner:SOUTHEAST UNIV

Urban traffic health index system and evaluation method

The invention provides an urban traffic health index system and an evaluation method, and the method comprises the following steps of 1, determining a seepage critical point through the analysis of the change relation between an urban traffic congestion rate and a traffic macroscopic operation level, and determining an early warning index according to the seepage critical point; 2, determining urban traffic jam propagation indexes; 3, drawing a change curve of the urban traffic system macroscopic operation level, the urban congestion time-space subgraph size and the operation level of each road along with time, and determining the elastic indexes of the urban traffic system at different scales according to the change curve. Through the above steps, a set of complete urban traffic system health assessment index system is established, the proposed method can provide the theoretical and technical guidance for the comprehensive and comprehensive management and regulation of the urban traffic system, and also has the enlightenment and guidance effects on the alleviation of urban traffic congestion phenomena, construction of an intelligent traffic system and the like.
Owner:BEIHANG UNIV

Multi-interlayer rock salt geological condition simulated cavity construction model test device

The invention discloses a multi-interlayer rock salt geological condition simulated cavity construction model test device, which comprises a round barrel, an annular heating cushion, cavity construction intermediate casings, a pressure plate, a temperature controller, an ultrasonic energy exchanger and a data processor. The outer periphery of the annular heating cushion is attached to the inner wall of the round barrel, the annular heating cushion is controlled by the temperature controller, the pressure plate is arranged at the top of the round barrel, a transmitting probe and a receiving probe on the ultrasonic energy exchanger are abreast placed on the outer wall of the round barrel, a signal output end of the ultrasonic energy exchanger is connected with the data processor, and the bottoms of the cavity construction intermediate casings penetrate through the pressure plate and extend into a cavity of an interlayer rock salt test piece. Using the device for a cavity construction simulated test of the interlayer rock salt test piece can guarantee similar model tests of geological environments and salt bed occurrence conditions, and the cavity construction process of multi-interlayer rock salt can be better observed and analyzed to provide more real theoretical support and technical guidance for avoidance of cavity construction failure and design of cavity reconstruction technological parameters.
Owner:CHONGQING UNIV

Business model based on animal husbandry industry chain Internet of things service platform

The invention relates to a business model based on an animal husbandry industry chain Internet of things service platform, which comprises an animal husbandry Internet of things management center, a breeding field group, a cloud memory, a livestock veterinarian diagnosis and treatment service management system, a food safety information management system, an epidemic situation early warning information management system, an online transaction service management system, a service station group, a supply and marketing cluster and a platform supply and marketing window, wherein the breeding field group is used for acquiring information of a plurality of fields, the acquired information is interacted with the livestock veterinarian diagnosis and treatment service management system, and the acquired information is transmitted to the online transaction service management system and the service station group. The business model based on the animal husbandry industry chain Internet of things service platform has the advantages that based on the breeding field information, by means of the cloud memory and the big data Internet of things service, the livestock veterinarian diagnosis and treatment service is integrated, technical guidance is given to the livestock farm, timely diagnosis and treatment is carried out, the epidemic situation can be found timely, an operation mode in which the livestock transaction safety information can be queried can be realized, and traceability of the livestock can be realized.
Owner:辽宁智深农业科技有限公司

Civil aircraft fault remote transmission and intelligent analysis support system

The invention provides an aircraft remote diagnosis real-time tracking system for transmitting video / audio data in real time, realizing real-time seamless link between an aircraft site and a base technical center, acquiring an out-field aircraft running state, and tracking a troubleshooting process and receiving a troubleshooting solution in real time. An expert cooperation troubleshooting system with a dispersed structure is adopted to collect multiple aspects of information including field maintenance personnel, MCC, maintenance experts, a safety monitoring department and the like; a dispersed structure network cooperation technology is used to provide conclusive reference information to the front-line maintenance personnel, and the maintenance level and troubleshooting efficiency are favorably improved. By an aircraft maintenance assisting and training system achieved by using AR intelligent glasses and a software algorithm, a maintenance solution is formed by iteration, and a maintenance job instruction is automatically generated, and the professional maintenance troubleshooting solution and technical guidance of the experts are provided for the field maintenance personnel, what you see is what you get is realized in aircraft maintenance work, human errors are reduced, the labor cost is reduced, and the aircraft maintenance work efficiency is improved.
Owner:YANTAI NANSHAN UNIV

Remote internet technical guidance/education distribution system using practitioner's vision, and guidance system using communication network

InactiveCN1426564AShow popularity in real timeObjective Judgment CriteriaTelevision system detailsDiagnosticsGuidance systemTransport system
There is disclosed a system of providing technical guidance and instruction by utilizing two zoom lens equipped auto focus CCD cameras placed directly in front of the instructor's left and right pupils and communication networks, such as internet. More specifically, a business system is disclosed which distributes technical guidance and instruction on medical surgeries and other highly precision oriented technical work performed in person, and / or an education guidance system which a specific client performs a medical surgery or other highly precise and technical work. In addition, the business system will have the capability of settling tuition / instruction fees which arise from providing the technical guidance and instructions, recruiting potential students, and settlement of payments to the instructors.
Owner:高桥淳

Method estimating hot-working performance of metal material

The invention discloses a method estimating hot-working performance of a metal material. The method comprises the following steps: (1), subjecting the metal material to high-temperature compression testing under designed thermal deformation conditions so as to obtain tree-true strain data; (2), establishing a modified hyperbolic sine constitutive model for describing high-temperature flow stress of a metal material, through programming; (3), establishing a hot-working dissipation efficiency estimation model and an instability judging module of the metal material, through programming; (4), using a high temperature flow stress prediction model established in steps (2) and (3), hot-working dissipation efficiency estimation model and instability judging model to predict flow stress of the metal material, hot-working dissipation rate and instability coefficient under any condition so that hot-working performance of the metal material is comprehensively estimated under any deformation condition. The method enables the hot-working performance of the metal material to be accurately and quickly estimated, and significant technical guidance is provided for reasonable arrangement of the-working process of the metal material is reasonably formulated.
Owner:CENT SOUTH UNIV

AAO process optimization operation method based on WEST model in sewage treatment plant

The invention belongs to the technical field of sewage treatment process optimization, and particularly relates to an AAO process optimization operation method based on a WEST model in a sewage treatment plant. The method comprises the following steps: 1) performing investigation and survey to obtain various parameters in the sewage treatment plant; 2) performing a technological process and constructive simulation in the sewage treatment plant by using the WEST model; 3) based on the established WEST process simulation model of the sewage treatment plant, performing control strategy simulation, simulating optimization operation, and obtaining optimization operation parameters; 4) applying the optimization operation scheme to the sewage treatment plant to optimize sewage treatment process operation; and 5) in the optimization operation stage, monitoring quality of inlet and outlet water of a sewage treatment system, and adjusting operation parameters to realize energy saving and consumption reduction of sewage treatment. The method provided by the invention provides technical guidance for process optimization operation in a township sewage treatment plant, greatly reduces workload of experimental research, and reduces energy consumption of the sewage treatment.
Owner:SOUTHEAST UNIV

Application of BIM technology to CRTSIII plate type ballastless track construction of high-speed railway

The invention discloses an application of a BIM technology to CRTSIII plate type ballastless track construction of high-speed railway. The application comprises the following steps of calculating related spatial technology parameters of a CRTSIII plate in a section according to a curve element table provided by a project; establishing a parameterized civil work and rebar model of the CRTSIII plate in the section according to a design drawing by utilizing a CATIA modeling platform, and finishing extraction of related parameters; performing site construction and design drawing check; performing three-dimensional technology disclosure of the site construction by cooperation of a project department to obtain related information of each construction section; performing construction progress management and material management by cooperation of the project department; assisting the project department to calculate a project amount based on BIM; and guiding the site construction based on a DELMIA construction simulation technology. According to the application, the BIM technology is applied to the plate type ballastless track construction management process of the high-speed railway for the first time, so that the design optimization, the construction process simulation, the three-dimensional technology disclosure and the like are realized, the working efficiency is improved, and the cost is reduced.
Owner:SHAANXI RAILWAY INST

Calculation method for electric aircraft propeller noise

The invention puts forward a calculation method for electric aircraft propeller noise. The method comprises the following steps that: according to the structure parameter of an electric aircraft propeller, establishing a three-dimensional geometric model of the propeller; adopting a finite element method to carry out mesh generation on the flow field area of the three-dimensional geometric model of the propeller to obtain a propeller flow field subjected to the mesh generation; adopting a large eddy simulation calculation model to carry out unsteady pressure pulsation solving on the circulation area of the propeller flow field subjected to the mesh generation to obtain the transient pressure distribution of a paddle surface; and adopting an acoustic boundary element method to carry out acoustic field simulation on an acoustic mesh model to obtain the radiation noise distribution of the propeller. The method comprehensively considers each influence factor of noise, and therefore, a calculation result is accurate and reliable. The method can be used for aerodynamic noise frequency domain analysis and the like, and a theoretical basis and technical guidance are provided for effectively lowering the propeller noise.
Owner:SHENYANG AEROSPACE UNIVERSITY

Power supply grid load predicting method based on geographic information system

InactiveCN107067104AImprove planning qualityStrong gridForecastingGeographical information databasesSelf-healingGuideline
Provided is a power supply grid load predicting method based on a geographic information system. A grid planning concept is introduced based on a power geographic information system. By combining the municipal planning and construction scheme and the distribution network planning technical guideline and according to the characteristics, a power supply area is divided in a scientific and reasonable manner based on the idea of large-to-small and divide-and-rule to form a plurality of relatively independent power supply grids with clear grid structure and self-healing potential. A strong support is provided for power demand prediction, distribution network status analysis, planning project scheme drafting, planning effect evaluation and investment decision making.
Owner:KUNMING ENERSUN TECH +1

Line transformation relation abnormity judgment method based on correlation between electric quantity and line loss

The invention discloses a line transformation relation abnormity judgment method based on correlation between electric quantity and line loss. The line transformation relation abnormity judgment method includes a data acquisition module which is used for acquiring electric quantity information, a data processing module which is used for analyzing correlation between electric quantity and line loss, and a data display module which is used for displaying abnormal line transformation relations, wherein the data acquisition module, the data processing module and the data display module are sequentially connected. The line transformation relation abnormity judgment method utilizes power consumption, voltage, current and other data of a line and a transformer provided by a power consumption information acquisition system, and utilizes a big data analysis technology and a transformer area line loss non-linear correlation analysis method to construct the line transformation relation error correction model independent of the local communication relation and find out the line transformation relation with statistical errors, so as to improve the accuracy of topological information of the power transmission line and provide technical guidance for conducting line transformation relation on-site troubleshooting, so that the calculation precision of line loss is improved, and technical support is provided for lean marketing management.
Owner:STATE GRID ZHEJIANG HAIYAN POWER SUPPLY

Suspension protection structure and method of cable box culvert pipeline

The invention discloses a suspension protection structure and a method of a cable box culvert pipeline. The structure comprises two parallel shelving girders, a plurality of top section steel, a plurality of bottom section steel and a plurality of suspension mechanisms, wherein the two shelving girders are arranged above the tops of piles on the two sides of a cable box culvert in a longitudinal direction of the cable box culvert; the top section steel is arranged on the two shelving girders at intervals; the bottom section steel is arranged below the cable box culvert via the suspension mechanisms; and the top section steel and the bottom section steel are correspondingly arranged vertically and are perpendicular to the longitudinal direction of the cable box culvert. The structure is provided with the shelving girders, the top section steel, the bottom section steel and the suspension mechanisms, so that suspension protection can be performed on the cable box culvert, early relocation of the pipeline is avoided, the construction period of a project is saved, the cost of the project is lowered, the safety of the pipeline is ensured, the influence of construction on the society is reduced, and a technical guide can be provided for a future similar project.
Owner:SHANGHAI MECHANIZED CONSTR GRP

Method for analyzing genetic diversity of Amomum tsao-ko by using inter simple sequence repeat (ISSR) reaction system

The invention belongs to the field of molecular biology DNA marker technique and application. The invention discloses a method for analyzing genetic diversity of Amomum tsao-ko by using inter simple sequence repeat (ISSR) reaction system. The ISSR reaction system comprises (per 25 muL) Mg<2+>-free 10*PCR buffer 3.0 muL, Taq DNA polymerase 1.5 U, Mg<2+> 1.5 mmol / L, dNTP 0.25 mmol / L, primers 0.3 mumol / , and template DNA 50 ng. The reaction mixture is amplified by the following procedures: pre-degeneration at 95 DEG C for 5 min, degeneration at 95 DEG for 1 min, annealing at 50-58 DEG C for 1 min, extension at 72 DEG C for 1 min, after 35 cycles, extension at 72 DEG C for 10 min, and storage at 4 DEG C. The method of the invention provides technical guide and theoretical support for Amomum tsao-ko resource identification, genetic diversity analysis and other scientific researches.
Owner:HONGHE COLLEGE

Fine breeding management application system

The invention discloses a fine breeding management application system. The system comprises poultry breeding internet of things, a cloud data center, a breeding system, video equipment, collecting equipment, breeding equipment and power distribution equipment and is characterized in that the breeding system, the video equipment, the collecting equipment, the breeding equipment and the power distribution equipment are connected with the poultry breeding internet of things separately, and the breeding system can control the video equipment, the collecting equipment, the breeding equipment and the power distribution equipment through the poultry breeding internet of things. The fine breeding management application system can conduct dynamic monitoring and trend analysis on the growth trends of poultry and growth potential and appearance of the poultry at various growth and development stages, provide quick and efficient remote guidance for poultry breeding, shed management, epidemic prevention and slaughtering, and improve the capabilities of fine breeding and shed management; the problems existing during breeding are timely found, and a technical strategy for poultry breeding and shed management is made; opinions or suggestions on poultry breeding and shed management are put forward, technical guidance is better carried out, and the yield increase of the poultry is promoted.
Owner:安徽润航农业科技开发有限公司

Kinetic model-based design method for fit clearance of machine tool spindle bearing

The invention provides a kinetic model-based design method for a fit clearance of a machine tool spindle bearing. The method comprises the steps of 1) simplifying the structure of a machine tool spindle into a bearing-rotor system; 2) establishing a kinetic model of the machine tool spindle; 3) based on the kinetic model, calculating a radial displacement and vibration response of a spindle rotor for a bearing outer ring and a bearing seat of the spindle under different fit clearances; 4) drawing a polar coordinate diagram of a radial displacement and vibration signal of the spindle rotor and balancing a radial rotating error of the spindle rotor by using a least square circle method; and 5) according to a relationship curve of the different fit clearances of the bearing outer ring and the bearing seat of the spindle and the radial rotating error of the spindle rotor, guiding design of the fit clearance of the bearing outer ring and the bearing seat of the spindle. According to the method, the influence of a fit clearance value of the bearing outer ring and the bearing seat of the spindle on the radial rotating precision of the spindle rotor is quantitatively considered, the technical guide is provided for installation and matching of the machine tool spindle, and an effective technology is provided for improving the rotating precision of the machine tool spindle.
Owner:XI AN JIAOTONG UNIV

Computer aided system and method of clothing function design

The invention relates to a computer aided system of clothing function design. The system comprises a database platform (20), a user platform (30) and a background operating platform (10), wherein the user platform (30) and the background operating platform (10) are independently connected with the database platform (20); the database platform (20) comprises a textile material module (201), a clothing design and template module (202), a 3D human body module (203) and a user data module (204). The invention also provides a computer aided method of the clothing function design. The computer aided system comprises the following steps: A) setting the basic information of a first draft pattern; B) setting the standard and the detail size of a 3D human body model; C) setting a clothing size corresponding to the size of the model; D) selecting a clothing template, and setting the information of textile material functionality; and E) sewing clothes, displaying a process document, and displaying a 3D practical effect of the designed clothes on the human body model. The computer aided system and method of the clothing function design has a clothing 3D visualization function combined with the 3D human body model, and provides scientific theoretical analysis and technical guide for design personnel.
Owner:THE HONG KONG RES INST OF TEXTILES & APPAREL

Testing device for simulating process of triggering trip by transmission line forest fire

InactiveCN103969558AStudy on discharge breakdown characteristicsTesting dielectric strengthCombustionEngineering
The invention discloses a testing device for simulating the process of triggering trip by transmission line forest fire. The testing device for simulating the process of triggering the trip by the transmission line forest fire comprises a voltage regulator (1), a voltage booster (2) and a current protector (7). The output end of the current protector (7) is connected with the input end of the voltage regulator (1). The output end of the voltage regulator (1) is connected with the input end of the voltage booster (2). The output end of the voltage booster (2) is connected with a wire (6). A first insulator string (3) and a second insulator string (4) are in radial parallel between the wire (6) and a metal rod (5). The testing device for simulating the process of triggering the trip by the transmission line forest fire can be used for researching the discharge breakdown feature of a 220 kV transmission line under a multi-point combustion condition, can simulate an onsite forest fire environment to reproduce the process of triggering the trip by the 220 kV transmission line forest fire and can provide theoretical support and technical guidance for the design of a transmission line and forest fire preventing work.
Owner:STATE GRID CORP OF CHINA +2
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