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Method for calculating thickness and weight of ice coating on overhead transmission line of tangent tower
InactiveCN101907456AReduce in quantitySimple structureWeighing apparatus for materials with special property/formIsolatorVertical plane
The invention discloses a method for calculating the thickness and the weight of ice coating on an overhead transmission line of a tangent tower. The method comprises the following steps of: 1, calculating basic mechanic parameters of a wire at ice coating temperature but without ice coating in a vertical plane according to the design parameters; 2, calculating height difference angle in a wind deviation plane, wire horizontal stress, wire deadweight ratio load in a vertical direction, horizontal span and wire length from the lowest point of a wire of big and small side towers to a main tower according to the wind deviation angle of an isolator string measured by a sensor; and 3, establishing a relation expression between the tilt angle of the isolator string in the wind deviation plane and the wind deviation angle of the isolator string in the wind deviation plane and the tilt angle of the isolator string in the vertical plane, and establishing an equation of load balance in the vertical direction after the ice coating in the wind deviation plane, and calculating the thickness and weight of equivalent ice coating of the wire. The method has the advantages of reducing the equipment quantity, and improving the calculation precision and the accuracy and the reliability of the calculation result.
Owner:SOUTH CHINA UNIV OF TECH +1
Visual detection method of ice coating thickness of overhead lines
InactiveCN101556142AEasy to monitorFacilitate remote processing by the monitoring centerCharacter and pattern recognitionUsing optical meansVisual perceptionComputer science
The invention provides a visual detection method of the ice coating thickness of overhead lines. The method comprises the steps as follows: 1) dividing areas to obtain the area where the overhead line in the picture is located; and 2) carrying out statistics on the pixel number of a single row occupied by a single overhead line in the picture and converting into the thickness of ice coating according to a proportion relation. The invention requires no establishment of precise mathematical model, and can fast and automatically realize the detection of the thickness of the ice coating.
Owner:HUNAN UNIV
Method for measuring arc sag of wire of power transmission line based on image processing
InactiveCN102346014ASimple structureLow costCharacter and pattern recognitionUsing optical meansMathematical modelElectric power
The invention discloses a method for measuring the arc sag of a wire of a power transmission line based on image processing. The method comprises the following steps of: firstly, acquiring an image signal of the power transmission line through a fixed-focus camera, transmitting the acquired image signal of the power transmission line back to a monitoring center in real time in a video stream form, and capturing a digital image of the power transmission line to be monitored from the video stream by the monitoring center so as to acquire a monitored target image; secondly, preprocessing the monitored target image; and finally, calculating data of the preprocessed image, thus obtaining the arc sag of the power transmission line. In the method for measuring the arc sag of the wire of the power transmission line based on image processing, the number of used equipment is small, the structure is simple and the cost is low; an image processing technology and a wireless transmission technology can be used fully; the monitoring center can remotely process the data and globally monitor the condition of the arc sag of a power network conveniently; and furthermore, the data of the arc sag can be acquired only through image processing and simple calculation instead of a precise math model, so the method is extremely simple and convenient to implement.
Owner:XI'AN POLYTECHNIC UNIVERSITY
Dynamic magnetic resistance based equivalent reactance transient state modeling method of magnetically controlled shunt reactor
ActiveCN101719185ANo truncation errorSolve problemsSpecial data processing applicationsShunt reactorMagnetic reluctance
The invention provides a practical decoupling electromagnetic transient state modeling method for describing the nonlinear magnetic saturation property of a super / extreme-high voltage magnetically controlled shunt reactor (MCSR), comprising the steps of: providing a transient equivalent reactance algorithm on the basis of a dynamic magnetic resistance idea under AC / DC mixed excitation; reflecting the real-time dynamic change property of the saturated equivalent reactance under the condition of the AC / DC mixed excitation; accurately describing the magnetizing and demagnetizing effect of network side AC current on a reversely series-wound DC excitation saturation magnetic circuit in two main magnetic circuits of the super / extreme-high voltage magnetically controlled shunt reactor (MCSR); describing nonlinear magnetic circuit property with arc hyperbolic functions; decoupling a coupling magnetic circuit equation; differencing transient equivalent reactance by an implicit trapezoid integration algorithm with damping; and establishing an electromagnetic transient state model. The invention not only accurately reflects the continuously smooth regulation property of the saturated magnetic circuit of the super / extreme-high voltage magnetically controlled shunt reactor (MCSR) and prevents the numerical oscillation of piecewise linearization algorithm, but also can meet the requirements of real-time / faster-than-real-time simulation computation under the condition of large-range continuous regulation.
Owner:CHINA ELECTRIC POWER RES INST +1
Dry sheet type facial mask containing active essence and preparation method of dry sheet type facial mask
ActiveCN111658574AReduce concentrationImprove efficiencyCosmetic preparationsToilet preparationsFiberTextile printer
The invention discloses a dry sheet type facial mask containing active essence and a preparation method of the dry sheet type facial mask, and is characterized in that the facial mask comprises base cloth and solid active essence loaded on the surface of the base cloth, the base cloth is spunlace non-woven fabric containing sodium alginate fibers, and the solid active essence comprises sodium hyaluronate and / or skin care active substances. The facial mask is prepared by adopting continuous production equipment of spunlace non-woven fabric according to the following steps: firstly, compoundingcalcium alginate fibers and hydrophilic fibers to prepare a fiber net, then performing puncturing and reinforcing by adopting a sodium sulfate aqueous solution, and then performing ultrasonic cleaningby adopting absolute ethyl alcohol to prepare the spunlace non-woven fabric; and loading the active essence on the surface of the spunlace non-woven fabric through a printing process, and then performing cutting, folding, disinfection, sealing and packaging to obtain the facial mask. The dry sheet type facial mask containing the active essence is light, thin, breathable, free of preservatives andthickeners, capable of gelating after absorbing water and capable of absorbing water with the amount larger than or equal to 30 g / g, has efficacy, safety and comfort, and is simple in preparation method and appropriate in cost.
Owner:QINGDAO UNIV
A linear target drop point positioning method based on aerial three-dimensional positioning
ActiveCN109903305AImprove applicabilityClever thinkingImage analysisPhotogrammetry/videogrammetryObservational errorStart stop
The invention relates to a linear target drop point positioning method based on aerial three-dimensional positioning. The method is suitable for a linear target drop point positioning system based ondouble-station imaging observation, and can avoid a measurement error caused by inaccurate positioning of a landing pixel point due to target landing explosion. The method comprises the following steps: firstly, carrying out image TopHat transformation, background suppression and filtering enhancement; carrying out Image threshold segmentation, and removing connected regions with weak linear characteristics; Detecting a suspected linear target in the image by adopting a Hough algorithm, carrying out track association, tracking a track conforming to the motion characteristics of the target, positioning a target landing frame, and outputting an azimuth angle and a pitch angle of a start-stop pixel point of the linear target in the image before landing; Finally, based on a double-station direction finding intersection model, carrying out aerial three-dimensional positioning on a target before landing, and establishing a three-dimensional space linear equation of the target; And finally, according to the target GPS information, predicting a target drop point position to realize three-dimensional positioning of a target drop point.
Owner:天津国为信息技术有限公司
Alginate fiber-containing spunlace fabric capable of absorbing water for gelation, and preparation method and application of spunlace fabric
ActiveCN111560708AReduce concentrationImprove efficiencyCosmetic preparationsToilet preparationsFiberPolymer science
The invention discloses an alginate fiber-containing spunlace fabric capable of absorbing water for gelation, and a preparation method and application of the spunlace fabric. The spunlace fabric is characterized in that the spunlace fabric has an interpenetrating network structure and is composed of 20-30% of sodium alginate fibers and other hydrophilic fibers, wherein the content of the sodium alginate fiber is 20-30%; the spunlace fabric is gelatinized after absorbing water, and the water absorption capacity is greater than or equal to 30g / g; the spunlace non-woven fabric is prepared by adopting continuous production equipment of spunlace non-woven fabric, calcium alginate fibers and other hydrophilic fibers are blended and carded to prepare a fiber net with an interpenetrating network structure at first, then a sodium sulfate aqueous solution is adopted for high-pressure jet flow puncture reinforcement, and finally ultrasonic cleaning and drying are conducted to prepare the spunlacefabric containing the alginate fibers. The preparation method of the spunlace fabric containing the alginate fibers is simple and can be realized on existing industrial equipment with high efficiencyand appropriate in cost, the gelation is generated after water absorbing, and the moisturizing time is more than or equal to 40 minutes, so the spunlace fabric can be used for manufacturing high-grade skin care mask base cloth and high-end medical dressings.
Owner:QINGDAO UNIV
Uni-directional optical path data importing apparatus based on data image encoding and decoding technique
InactiveCN101335899AImprove securityEnsuring simplex data transferTelevision systemsDigital video signal modificationComputer hardwareHardware structure
The present invention discloses a unidirectional optical path data importing apparatus based on data image encoding and decoding technique which can automatically, unidirectionally and safely transmit data of external network to the internal network. The invention are achieved by the following technical solutions, the device includes an exterior network terminal, a display, an image acquisition apparatus and an internal network terminal, wherein, the external network terminal is connected to the display through data lines, the image acquisition apparatus is connected to the internal network terminal through data lines, and the display is provided adjacent to the image acquisition apparatus; the exterior network terminal contains a data management module, a data image coding module and an image display module; the internal network terminal includes a video capturing module, an image processing module, a data image decoding module, a verifying and error correction module, and a data frame assembling module. The device has advantages of simple hardware structure, low cost, intuition to inform users whether it is isolated or unidirectional, easy application and significant social and economic benefits.
Owner:MILITARY TRANSPORTATION UNIV PLA
Method for detecting phenolic acid and/or tanshinone ingredient by capillary electrophoresis
ActiveCN104569114AInnovativeClever thinkingMaterial analysis by electric/magnetic meansMicrogramChemistry
The invention relates to a method for detecting a phenolic acid and / or tanshinone ingredient by capillary electrophoresis. According to the method, the capillary electrophoresis separation of different phenolic acid and tanshinone ingredients in salvia miltiorrhiza herbs and biological fluid can be realized, a capillary column is filled with a buffer solution, the buffer solution comprises the following ingredients: graphitization multiwall carbon nanotube with final concentration of 3 to 9 microgram / mL, lauryl sodium sulfate B with concentration of 20 to 50 mmol / L, isopropanol with volume percentage of 7.5 to 15 percent and 5 to 20 mmol / L of sodium borate, the pH value is 7 to 9, the graphitization multiwall carbon nano tube is added in a form of carbon nano tube dispersion liquid, the capillary electrophoresis detection is carried out on a sample, and the content of the phenolic acid and tanshinone ingredient in the sample can be calculated according to a standard curve of a reference product. According to the method, the graphitization multiwall carbon nano tube with functionalized surface active agent is firstly used as a novel fixed phase into the solution to form the buffer solution with good stability and uniformity in dispersion, a good effect for separating the phenolic acid from tanshinone ingredients can be realized, and a remarkable effect on the detection aspect of the salvia miltiorrhiza herbs and biological fluid can be achieved.
Owner:HANGZHOU NORMAL UNIVERSITY
Primary power supply scrambler
InactiveCN101943733AClever thinkingReliable controlCurrent/voltage measurementElectrical testingOvervoltageElectricity
The invention discloses a primary power supply scrambler of which the circuit structure comprises a power supply module A, a power supply module B, a power supply module C, a diode D1, a diode D2, a diode D3, an MOS tube Q1, an MOS tube Q2, an MOS tube Q3, a singlechip control module, a driving module, a potentiometer, an LCD liquid crystal display module and a keyboard. In the primary power supply scrambler, the diodes and electronic switches are respectively connected in series on the output of the power supply modules (A / B / C) to provide power output for an electronic system, the voltage of A / B / C as well as the on / off time of K1 / K2 / K3 are respectively set, so that a voltage jump of which the duration can be set is obtained at the common output end of the two electronic switches, thereby simulating the functions of overvoltage surging, undervoltage surging and micro power-down. The technology has the advantages of skillful consideration, simple circuit and reliable control. At present, the technology is used to produce multiple surge voltage generators meeting the requirements of aerospace military standard and can simulate the functions of overvoltage surging, undervoltage surging, micro power-down and the like.
Owner:NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
Lead-free nuclear radiation protective gloves and preparation method thereof
InactiveCN112662020AAddress health hazardsShield filler highProtective garmentNuclear radiationVulcanization
The invention discloses a pair of lead-free nuclear radiation protective gloves and a preparation method thereof, solves the problems that lead-containing gloves pollute the environment and are harmful to the health of personnel, and belongs to the technical field of nuclear protective materials. The lead-free nuclear radiation protective glove is prepared from the following raw materials in parts by weight: 100 parts of rubber-based material and 200-700 parts of shielding functional filler. The preparation method comprises the following steps: weighing the rubber base material according to the formula ratio, and plastifying the rubber base material adding the rest raw materials, and mixing, calendering and tabletting the mixture to make a rubber sheet; and putting the rubber sheet into a forming mold for vulcanization to obtain the lead-free nuclear radiation protective glove. The lead-free nuclear radiation protection glove is high in shielding filler, can achieve protection of single or comprehensive radiation types of X-ray radiation, gamma-ray radiation and neutron ray radiation, and has good weather resistance and mechanical properties. According to the method disclosed by the invention, the shielding filler can be uniformly dispersed in the rubber-based material, so that the production cost can be effectively reduced, and the yield of products is improved.
Owner:成都盛帮核盾新材料有限公司
Stable butylphthalide sodium chloride injection as well as preparation method and application thereof
PendingCN112386571AImprove solubilityGood water solubilityOrganic active ingredientsInorganic non-active ingredientsSodium Chloride InjectionCyclodextrin
The invention discloses a stable butylphthalide sodium chloride injection as well as a preparation method and application thereof, belongs to the technical field of pharmaceutical preparations, and solves the problems of poor safety and stability of the butylphthalide sodium chloride injection in the prior art. The stable butylphthalide sodium chloride injection comprises a sulfobutyl betacyclodextrin sodium compound, sodium chloride and water. The pH value of the butylphthalide sodium chloride injection is 4.0-5.0. The preparation method comprises the following steps of weighing a prescription amount of sulfobutyl betacyclodextrin sodium, and adding water for dissolving to prepare an auxiliary material solution; weighing a prescription amount of butylphthalide, adding the butylphthalide into the auxiliary material solution, stirring to enable the sulfobutyl betacyclodextrin sodium to include the butylphthalide, and adjusting the pH value of the solution to 4.0-5.0 after the inclusionof the butylphthalide is completed; and filtering, filling and sterilizing to obtain the product. The stable butylphthalide sodium chloride injection as well as the preparation method and applicationthereof are scientific in design and ingenious in thought, and the butylphthalide sodium chloride injection has good stability and safety.
Owner:CHENGDU SHIBEIKANG BIOLOGICAL MEDICINE TECH CO LTD
Safe transportation device for juvenile hairy crabs
The invention discloses a safe transportation device for juvenile hairy crabs. The safe transportation device comprises a box, a water tank is arranged in the box, a box cover is arranged at the upper end of the box in cooperation, a temperature inductor is arranged in the water tank, and a heating pipe and a refrigeration pipe are further arranged in the water tank. A high-speed motor is fixed to the box cover, a driving shaft is located in an aerator pipe, the top end of the driving shaft is fixedly connected with an output shaft of the high-speed motor, handles are arranged on the outer side wall of the box, and the bottoms of the handles are provided with grooves with semicircular sections in the length direction of the handles. Buffer airbags are arranged on the inner walls of the water tank, a shakeproof layer is arranged in the box, the water tank is arranged on the shakeproof layer, and strong springs are arranged between the water tank and the box. The bottom of the box is connected with a bottom plate through a spring buffer mechanism, the spring buffer mechanism comprises spring sleeves and pressing columns, and compression springs are arranged in the spring sleeves. The safe transportation device has the advantages of providing oxygen, adjusting water temperature, reducing shock and achieving buffering, the stability of the box in the transportation process is guaranteed, overall stability is guaranteed, and carrying is more convenient.
Owner:重庆市龙景山农业开发有限公司
Modified urea formaldehyde resin and preparation method thereof
The present invention relates to a modified urea formaldehyde resin preparation method, which comprises: adding a modified layered silicate to a urea formaldehyde resin prepolymer, and polymerizing to obtain the layered silicate-modified urea formaldehyde resin, wherein the modified layered silicate is the layered silicate with the amino functional group on the surface. According to the present invention, the provided urea formaldehyde resin can contain up to 40% of the layered silicate so as to substantially reduce the cost of the urea formaldehyde resin; the morphology is the regular spherical particles, the irregular columnar particles or the irregular ellipsoidal particles, and the thermal stability is good; and the ideal of the preparation method is ingenious, the operation is simple, and the platform is provided for the modification of the urea formaldehyde resin.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Stable chloral hydrate syrup as well as preparation method, quality control method and application thereof
PendingCN112656758ADesign scienceClever thinkingNervous disorderComponent separationSucroseChloral hydrate
The invention discloses stable chloral hydrate syrup as well as a preparation method, a quality control method and application thereof, belongs to the technical field of medicines, and solves the problems that chloral hydrate is poor in stability, harsh in storage condition and short in validity period and needs to be diluted during use in the prior art. The stable chloral hydrate syrup comprises chloral hydrate, cane sugar and water, the mass volume concentration of chloral hydrate is 10%, and the pH value of the chloral hydrate syrup is 2.3-3.0. The chloral hydrate syrup disclosed by the invention also comprises glycerol. The chloral hydrate syrup disclosed by the invention adopts the specification that the concentration of chloral hydrate used clinically is 10%, does not need to be newly prepared when in use, and is accurate in dosage, safe, controllable and stable in property.
Owner:CHENGDU SHIBEIKANG BIOLOGICAL MEDICINE TECH CO LTD +1
All-time automatic target scoring system and ammunition drop point positioning method thereof
PendingCN113126126ALess restrictivePromote generationUsing optical meansSatellite radio beaconingSimulationPositioning technology
The invention relates to an all-time automatic target scoring system and an ammunition drop point positioning method thereof. The invention relates to the technical field of photoelectric measurement, a GPS positioning technology is introduced on the basis of passive cross positioning of an infrared camera, GPS positioning is carried out on an observation station, a target and a reference point, a passive cross positioning model is established on the basis, the limiting conditions of a system for a working environment are reduced, and the applicability of the system is enhanced; a three-dimensional aerial motion track of an ammunition target is generated by performing preprocessing, target detection, track association, space-time calibration, cross positioning and tracking on infrared images of each observation station, and ammunition drop point positioning and target scoring are performed according to target GPS information after ammunition landing explosion, so that measurement errors caused by inaccurate positioning of ammunition drop point pixel points due to landing explosion are avoided. The target scoring system has few working environment limiting conditions, is high in expandability and applicability, facilitates generation of instructive target scoring information, is high in positioning method precision, and is suitable for popularization and application in a target range.
Owner:上海技威光电技术有限公司
Printing module of cigarette making and plug assembling machine
The invention provides a printing module of a cigarette making and plug assembling machine. A flat key is arranged on the outer circumference surface of a steel seal roller transmission shaft; a key groove is formed in the inner circumference surface of a steel seal roller; the flat key is matched with the key groove; the steel seal roller is also provided with a threaded hole penetrating through the inner circumference surface; the threaded hole is matched with a locking screw; and the locking screw is propped against the steel seal roller transmission shaft. The printing module has the advantages that the threaded hole is formed in the steel seal roller and is matched with the locking screw, and the purpose that the steel seal roller is locked is completely achieved, so that a transmission gap between the steel seal roller and the steel seal roller transmission shaft is eliminated, the damage to the steel seal roller transmission shaft and the slot groove is avoided, the phenomenon of steel seal polychrome brand escape is thoroughly solved, the thought is skillful and practical, meanwhile, two steel seal rollers of the printing module share one printing roller, after a steel seal on the left side of cigarette paper is printed, the steel seal on the right side is immediately printed, the distance between the left steel seal and the right steel seal is short, the overlap of steel seals caused by the conveying fluctuation of the cigarette paper is avoided, the steel seal polychrome printing accuracy is high, and the printing module is particularly suitable for the cigarette production with high printing accuracy requirements.
Owner:SHANGHAI TOBACCO GRP CO LTD
Measuring method for soil moisture and electrical conductivity based on vectorial resultant and device thereof
InactiveCN101520426ASimple thinkingClever thinkingResistance/reactance/impedenceMaterial impedanceCapacitanceResistance capacitance
The invention discloses a measuring method for soil moisture and electrical conductivity based on vectorial resultant and a device thereof. Reference signals obtains resistance-capacitance model signals with variable amplitude and phase by a soil signal collection module; similarly, the reference signals is used, amplified and reversed to obtain reverse signals with adjustable gain; and vectorial resultant is carried out on the resistance-capacitance model signals and the reverse signals with adjustable gain by a vectorial resultant module to obtain capacitive component and conductive component, namely obtain the soil moisture and the electrical conductivity of the soil model. The invention provides a soil moisture testing method with simple and smart thought, easy operation and easy realization. The method can eliminate the influence of the electrical conduction in soil, accurately separate the capacitive component of the soil and improve the sensitivity and accuracy of a dielectric method for moisture measurement. By the offset to the electrical conductivity of the soil model, the electrical conductivity of the soil can be obtained; and the electric conductivity is an important parameter for reflecting the soil fertility.
Owner:HENAN AGRICULTURAL UNIVERSITY
Weather-resistant urea formaldehyde resin preparation method
The invention relates to a weather-resistant urea formaldehyde resin preparation method. The method comprises the steps that a modifier is added into urea formaldehyde resin prepolymer, polymerizationis conducted, and urea formaldehyde resin good in weather resistance is obtained, wherein the modifier is acrylate emulsion polymer. The service life of the urea formaldehyde resin is greatly prolonged; the urea formaldehyde resin is shaped like regular spherical particles or irregular cylindrical particles or irregular ellipsoidal particles, and the thermal stability and weather resistance are good; the preparation method is ingenious in idea and easy to operate, and the usage environment of the urea formaldehyde resin is expanded.
Owner:任会平
Measuring method for soil moisture and electrical conductivity based on vectorial resultant and device thereof
InactiveCN101520426BSimple thinkingClever thinkingResistance/reactance/impedenceMaterial impedanceCapacitanceSoil science
Owner:HENAN AGRICULTURAL UNIVERSITY
=Method for calculating elastic modulus of needled C/C composite material
ActiveCN109063280ASolve the characteristicsSolve process problemsSustainable transportationDesign optimisation/simulationFiber bundleMechanical property
A method for calculate elastic modulus of needled C / C composite material belong to that technical field of composite material and mechanical property testing. The method specifically comprises the following steps: step 1, establishing a correction calculation model of elastic modulus of needled C / C composite material; 2, respectively obtaining a stiffness matrix of each fiber bundle layer and a stiffness matrix of each net tire layer; 3, obtain that elastic modulus of a needled C / C composite lay; 4, respectively obtain that elastic modulus of three needled C / C composite layer, substituting theelastic modulus of the three needled C / C composite layers into a finite element calculation model, and obtain the elastic modulus of the needled C / C composite. The calculation method of the inventionimproves the accuracy of the elastic modulus calculation result, reduces the error of the elastic modulus calculation result, and has high versatility.
Owner:BEIHANG UNIV
Stable butylphthalide small squirt, and preparation method and application thereof
PendingCN113662908AImprove stabilityImprove securityOrganic active ingredientsPharmaceutical delivery mechanismCyclodextrinSodium Chloride Injection
The invention discloses a stable butylphthalide small squirt, and a preparation method and application thereof, and solves the problems of poor stability and inconvenience in clinical use of a butylphthalide injection in the prior art. The butylphthalide small squirt is prepared from the following raw materials: butylphthalide, sodium sulfobutyl-beta-cyclodextrin and water, wherein the weight ratio of the butylphthalide to the sodium sulfobutyl-beta-cyclodextrin to the water is 1:(30-35):(40-400). The preparation method comprises the following steps: weighing a prescription amount of sodium sulfobutyl-beta-cyclodextrin, and adding water for injection to dissolve the sodium sulfobutyl-beta-cyclodextrin so as to prepare an auxiliary material solution; adding butylphthalide into the auxiliary material solution, conducting stirring to enable the sulfobutyl beta-cyclodextrin sodium to be clathrated with the butylphthalide, and after the clathration of the butylphthalide is completed, adjusting the pH value of the solution to 4.5-5.5; and conducting filtering, filling and sterilizing to obtain the product. The butylphthalide small squirt has good stability and safety, and is suitable for industrial production. Compared with a butylphthalide sodium chloride injection, the injection provided by the invention has better stability.
Owner:CHENGDU SHIBEIKANG BIOLOGICAL MEDICINE TECH CO LTD
Water filter screen combined structure allowing online cleaning
ActiveCN111905428ASmooth slidingClever thinkingTreatment involving filtrationNature of treatment waterWater filterFiltration
The invention provides a water filter screen combined structure allowing online cleaning, belongs to the technical field of filtration, and improves the use performance of a filter. The sturcture comprises two closing pulleys, two opening pulleys, two A1 ropes, two B1 ropes and a filter screen body; wherein the stretching rope controls the underwater filter to be opened and closed; the filter screen can be opened by pulling two ropes A1 on the platform, and the filter screen can be closed by pulling the two B1 ropes, so that sundries can smoothly slide off when the filter screen is opened or closed. The structure is simple, operation is convenient, and safety is high. In addition, the filter screen adopts a new structural form, so that the impurities on the surface can be removed without being called out by a crane.
Owner:NORTH HUAJIN CHEM IND CO LTD
Feed plate device capable of preventing solder strip accumulation
The invention discloses a feed plate device capable of preventing solder strip accumulation. A wire outlet device is arranged on the left side of an abutting device. The wire outlet device comprises a feed plate. The abutting device comprises a gear-rack mechanism. A rack of the gear-rack mechanism is arranged horizontally. The height of the rack is identical to that of a feed plate shaft. The abutting device is provided with a limiting part which only allows the degree of freedom of the rack in the horizontal direction. The feed plate is driven by a first motor to rotate, so that conveying of copper strips is completed. A feed plate shaft is fixedly connected with a motor shaft of the first motor. A gear shaft is fixedly connected with a motor shaft of a second motor. The first motor and the second motor are switched in a circuit through a bilateral switch. When the first motor is powered on, the second motor is powered off, and when the first motor is powered off, the second motor is powered on. According to the feed plate device, the gear-rack mechanism is arranged on one side of the feed plate, after driving of a feed plate driving mechanism is stopped, the feed plate which still rotates due to inertia can be abutted and pushed away by a certain distance, and in this way, the copper strips can be prevented from being accumulated at the front end of a slitting tool.
Owner:江苏亿欣新材料科技股份有限公司
Implementation method for reducing beam width of heading beacon array antenna
PendingCN112632795AReduced beam widthEliminate the effects ofDesign optimisation/simulationSpecial data processing applicationsSignal beamAntenna array
The invention discloses an implementation method for reducing the beam width of a heading beacon array antenna, and belongs to the technical field of heading beacons. The implementation method comprises the following steps: selecting a course beacon antenna array needing to be optimized, constructing an initial structure model, and generating a navigation channel CSB directional diagram; calculating the beam width according to the channel CSB directional diagram, and taking the fact that the beam width reaches or is smaller than a certain determined value as a target function; defining the interval between the arrays and the feed level amplitude of the arrays as optimization variables, changing the interval between the arrays or the feed level of the arrays, observing the change trend of a channel CSB directional diagram, and defining an initial value, a minimum value and a maximum value for the optimization variables in combination with a target function; submitting design analysis; comparing with a design target to generate an error function; and outputting a result if the error function is smaller than a specified value. By adopting the method provided by the invention, the CSB signal beam width of the heading beacon can be reduced under the condition of not increasing the number of antenna arrays.
Owner:THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
Stacked type pressure maintaining box group
InactiveCN112622320AReduce usageImprove cleanlinessTelephone set constructionsPressesEngineeringRelative motion
The invention provides a stacked type pressure maintaining box group, which comprises at least two box cover bodies of the same structure, and the two box cover bodies of the same structure are arranged to be buckled in a relative movement mode in the same direction or disassembled in a back-to-back mode. By adopting the box cover bodies with the structure, two box cover bodies can be used for maintaining the pressure of one mobile phone, three box cover bodies can be used for maintaining the pressure of two mobile phones, four box cover bodies can be used for maintaining the pressure of three mobile phones, and the like, so that the stacked type pressure maintaining box group provided by the invention has the advantages that the thought is ingenious, and the use number of the box cover bodies is reduced when the pressure of the same number of mobile phones are maintained; a working table top can be kept clean and tidy through a stacking mode, and the occupied area of the working table is reduced; and if the mobile phone to be subjected to pressure maintaining needs to apply pressure to pressure maintaining boxes through special equipment, pressure can be applied to the multiple pressure maintaining boxes at the same time, and the working efficiency is greatly improved.
Owner:深圳市福日中诺电子科技有限公司
Scrap briquetting press discharging mechanism without gate and scrap briquetting press including the same
The invention discloses a scrap briquetting press discharging mechanism without a gate. The discharging mechanism comprises clamping cylinders, an ejector rod and a scrap cake discharging sleeve, wherein the scrap cake discharging sleeve is of a hollow cylindrical shape, the inner diameter of the scrap cake discharging sleeve is equal to the diameter of the pressed cake block, the scrap cake discharging sleeve is composed of a fixed scrap cake discharging sleeve and a movable scrap cake discharging sleeve; the movable scrap cake discharging sleeve is affected by the clamping cylinders and then goes close to the fixed scrap cake discharging sleeve, so that a scrap cake in the scrap cake discharging sleeve is clamped. The ejector rod is arranged between the clamping cylinders and the scrape cake discharging sleeve, the exposed end of a piston rod of the clamping cylinder is hinged to one end of the ejector rod, the other end of the ejector rod is hinged to the arc outer surface of the scrap cake discharging sleeve; a cylinder body of the clamping cylinder is fixed on a support table of a rack of a scrap briquetting press. The invention further discloses the scrap briquetting press comprising the discharging mechanism. The lever principle is adopted, the scrap cake block is clamped by advancing of the clamping cylinders replacing a block pulling cylinder, and when the main cylinder moves forwards and presses the material, the pressed cake block clings to the cake block, the deformation of a block pulling lining plate is avoided, and meanwhile, the machine production efficiency is greatly improved.
Owner:江苏大圣博环保科技股份有限公司
Intelligent parking space information management system and method based on internet of things technology
InactiveCN105931493AEasy to identifyImprove living comfortIndication of parksing free spacesParking spaceGreen-light
The invention discloses an intelligent parking space information management system and a method based on an internet of things technology. Hardware of the intelligent parking space information management system comprises a photosensitive sensor, an MCU, a relay switch, a starting control sensitivity knob, a time delay adjustment knob, a red light, a green light and an LED screen, wherein the photosensitive sensor, the MCU, the relay switch, the starting control sensitivity knob and the time delay adjustment knob are installed on a circuit board, and the circuit board is installed in a hole at the center of a parking space with only the photosensitive sensor being exposed; the red light and the green light are installed at the top part inside a garage above the parking space, light captured by the photosensitive sensor becomes weak after a vehicle parks in the parking space, and he MCU controls the relay switch to turn on the red light and turn off the green light; light captured by the photosensitive sensor becomes strong after the vehicle drives away from the parking space, and the MCU controls the relay switch to turn on the green light and turn off the red light, so that people find a free parking space quickly according to the location of the green light. The LED screen is installed at the entrance of the garage and displays a planimetric map of the whole garage, free parking spaces are displayed as green, and occupied parking spaces are displayed as red, thereby guiding a parking direction for people.
Owner:XIAMEN KINGTOP INFORMATION TECH
Programmable frequency divider for expanding frequency dividing ratio
The invention belongs to the technical field of frequency divider integrated circuits, and specifically relates to a programmable frequency divider for expanding a frequency dividing ratio. The programmable frequency divider comprises n cascaded 2 / 3 frequency dividing units, wherein the previous n-1 levels are 2 / 3 frequency dividing units without frequency dividing ratio expansion bits, the last level is a 2 / 3 frequency dividing unit having a frequency dividing ratio expansion bit; (the formula is as shown in the specification) is a frequency dividing ratio control bit, and the total frequencydividing range after the frequency dividing ratio is expanded is (formula is as shown in the specification); and the last level 2 / 3 frequency dividing unit having the frequency dividing ratio expansion bit adopts a latch with a reset end rst, and a time sequence conversion method is performed on the latch, so that the programmable frequency divider for expanding the frequency dividing ratio can work normally during the switch at the boundary of the frequency dividing ratio. Compared with the prior art, the programmable frequency divider overcomes the problem of frequency dividing ineffectiveness of the traditional programmable frequency divider during the switch at the boundary of the frequency dividing ratio, and has a simple structure and reliable performance; and the programmable frequency divider can be applied to broadband fractional part frequency dividing frequency synthesizer.
Owner:FUDAN UNIV
Battery cover plate pole welding tool
PendingCN114799699AClever thinkingAvoid baroclinic problemsWelding/cutting auxillary devicesAuxillary welding devicesElectrical batteryStructural engineering
The invention discloses a battery cover plate pole column welding tool which comprises a supporting part used for supporting a battery cover plate. The pressing device is matched with the supporting part to press the pole; the pressing device comprises a main body part formed above the supporting part, a pressing driving mechanism used for driving the main body part to move up and down, a mounting hole formed in the main body part and corresponding to the position of the pole mounting groove, and a pole pressing part rotationally arranged in the mounting hole; the pole pressing and holding part is provided with a penetrating space which is vertically through and is used for enabling a welding head to penetrate downwards, and the pole pressing and holding part is provided with a shielding part for shielding the battery cover plate on a horizontal projection plane; and the rotating device is used for driving the pole pressing part to rotate so as to change the position of the shielding part. According to the battery cover plate pole welding tool, the problem of oblique pressing is solved through a simple structure, and the product yield is increased.
Owner:宜宾长盈精密技术有限公司 +1
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