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Method and apparatus for simulating vehicle end sensor data based on roadside sensors
The application relates to the technical field of vehicle control, in particular to a method and device for simulating vehicle end sensor data based on roadside sensors, wherein the method comprises the following steps: generating roadside three-dimensional scene data of roadside sensors based on roadside sensor data of the roadside sensors; generating vehicle body roadside three-dimensional scene data of the roadside three-dimensional scene data in a vehicle body coordinate system based on the roadside three-dimensional scene data and a vehicle body coordinate system of vehicle end sensors; and rendering the vehicle body roadside three-dimensional scene data to obtain simulation data of the roadside sensors simulating the vehicle end sensors. Thus, the problems in the prior art, such as high difficulty, high cost, complex installation, difficult maintenance and the like of data collection and processing, and the difficulty in meeting the increasing demand for vehicle end sensor data, are solved.
Owner:TSINGHUA UNIVERSITY
Purification method for bamboo fiber reinforced natural polymer composite material
The present application relates to the technical field of bamboo fiber composite material, in particular to a purification preparation method of bamboo fiber reinforced natural polymer composite material. The bamboo raw material is crushed and treated by steam explosion to obtain primary bamboo fiber; the primary bamboo fiber is sequentially subjected to organic solvent dewaxing treatment and oxidation system selective delignification treatment to obtain purified bamboo fiber; the purified bamboo fiber is treated in a tannin acid solution to form a polyphenol interface layer on the surface thereof; and a solution containing polyvalent metal ions is added to the treated bamboo fiber to form a coordination cross-linking interface layer on the surface of the bamboo fiber. The present application constructs a stable interface layer between the fiber and the natural polymer matrix. The interface layer can effectively transfer stress, significantly improve the tensile strength, bending strength and shear strength of the composite material, and solve the problem of weak interface and easy delamination of traditional natural composite materials.
Owner:JINNADUO BIOENGINEERING (SHANDONG) CO LTD
Electronic cigarette battery short circuit troubleshooting tool
ActiveCN224287082Ueasy to startconvenient stopShort-circuit testingMeasurement instrument housingComputer hardwareElectrical battery
This utility model discloses a short-circuit troubleshooting tool for electronic cigarette batteries. It relates to the field of electronic cigarette testing technology and includes a testing component. The testing component has a replacement component at its bottom. The testing component includes a handle, a connecting part at its bottom, a mounting block at the bottom of the connecting part, and a connection hole at the bottom of the mounting block. The replacement component includes a replacement head, a mounting slot at its top, and a connection plug fixedly installed inside the mounting slot. The mounting block is inserted into the mounting slot, and the connection plug is inserted into the connection hole. The replacement head has a testing head at its bottom, a positioning head at its bottom, and an electrode contact at its bottom. This utility model allows for convenient replacement of the replacement component according to the electronic cigarette battery to be tested, facilitating short-circuit troubleshooting and possessing high practical value.
Owner:DONGGUAN SIDI ELECTRONICS CO LTD
A band saw with a tension display device
ActiveCN224275423Ucontrol tightnesseasy to operateApparatus for force/torque/work measurementBand sawsDisplay deviceControl theory
This utility model discloses a band saw with a tension display device, including a sliding potentiometer. One end of the sliding potentiometer is electrically connected to a digital display screen. A threaded plate is slidably connected to the bottom of the sliding potentiometer, and a potentiometer bracket is fixedly connected to the upper end of the threaded plate. A slider is slidably connected to the top of the sliding potentiometer. An upper wheel shaft is fixedly installed at the center end of one side of the slider, and a hanging plate is fixedly connected to one side of the slider. A groove is opened on the surface of the hanging plate. The band saw with the tension display device of this utility model can control the tension of the saw blade through the rebound force of the spring, thus better controlling the tension of the saw blade. At the same time, the potentiometer push rod can move with the hanging plate through the groove, and the value on the digital display screen changes accordingly. The tension value is displayed in real time by adjusting the position of the upper wheel, making the adjustment more accurate and convenient for customer operation.
Owner:青岛金岭电器有限公司
Photovoltaic production organic adsorption box
The utility model discloses a photovoltaic production organic matter adsorption box, including adsorption box body, the adsorption box body is equipped with the air inlet and the air outlet who arranges relatively, still include adsorption filter component and fire control subassembly, the utility model discloses adsorption filter component adopts the secondary processing structure of filtration and adsorption to improve the purification precision in coordination, the filter first pretreats particulate matter and other impurities in flue gas, reduces the subsequent active carbon filling's jam risk, active carbon filling places in layers through the spacing arrangement of filler frame, has increased the contact area with flue gas, has prolonged the adsorption path, has improved organic matter adsorption efficiency significantly. The spray pipe of fire control subassembly is arranged accurately between adjacent filler frame, cooperates interval setting and sprays, can carry out directional spraying to active carbon filling gathering area, and the fire extinguishing range covers the key fire risk point, compares integral type spray structure and extinguishes fire more accurate, responds more quickly.
Owner:VAN-E
A municipal engineering cable threading device
ActiveCN224472966USave disassembly timeImprove construction efficiencyArchitectural engineeringStructural engineering
This utility model discloses a cable insertion device for municipal engineering, including a tracked walking mechanism, a frame, a drive mechanism, and a cable frame. A pair of rotating shafts are rotatably mounted on the top of the frame, one of which is connected to the output end of the drive mechanism. The side wall of the rotating shaft is provided with a fastening assembly for supporting the cable frame. The fastening assembly consists of a support plate and a cover plate. A U-shaped rod is movably mounted on the side wall of the rotating shaft via an elastic member. The support plate and cover plate are respectively provided with insertion holes for accommodating the U-shaped rod, so that the U-shaped rod can be inserted into the insertion holes and, in conjunction with the elastic member, the support plate and cover plate are locked together. Through the cooperation of the U-shaped rod, support plate, cover plate, and elastic member, the cable frame can be installed and disassembled without the use of additional tools. The U-shaped rod, in conjunction with the elastic member, allows the support plate and cover plate to tightly clamp the square tube at the end of the cable frame. Compared with the traditional bolt fastening method, this significantly shortens the installation and disassembly time of the cable frame and improves the efficiency of cable construction.
Owner:WENZHOU LONGSHANG CONSTR CO LTD
Dust prevention device for tea packaging equipment
This utility model discloses a dustproof device for tea packaging equipment, including a packaging box. A filter box is fixedly connected to one side of the packaging box, and a feed pipe is fixedly connected to the top of the packaging box. A lifting frame is movably connected inside the packaging box. A vacuum cleaner is fixedly installed on one side of the packaging box via a connecting plate. A dust suction hood is fixedly connected to the output end of the vacuum cleaner, and one end of the dust suction hood is connected to the filter box. A filter screen is slidably connected inside the filter box. A dust suction plate is fixedly connected to the inner wall of one side of the packaging box, and the dust suction plate is connected to the filter box. The dustproof device for tea packaging equipment of this utility model adopts a closed negative pressure dust removal system, which captures the dust generated by the tea in real time during the feeding process, realizing "dust control at the source," effectively preventing dust from accumulating inside the equipment, reducing dust residue in the tea, and achieving effective dust prevention.
Owner:FUJIAN MINDONG BLACK TEA TECHNOLOGY CO LTD
A transfer rack for easy placement of finished doors and windows
ActiveCN224277188UAvoid breakage etc.Reasonable structureHand carts with multiple axesHand cart accessoriesBrakeCaster
A transfer rack for conveniently placing finished doors and windows includes a base, side frames, and a support frame. The base is W-shaped and includes a walking groove and V-shaped seats symmetrically arranged on both sides of the walking groove. Casters are installed at the bottom of the base. The side frames are fixed to the top of one side of the base, and the support frame is fixed to the top of the base. The walking groove in this invention allows personnel to easily walk to the inside of the transfer rack and place the finished doors and windows on it without having to lift their feet to step over the base, saving effort and ensuring safety, preventing tripping injuries and damage to the finished doors and windows. The W-shaped base and the gradually decreasing width of the V-shaped seats, along with the gradually decreasing width of the walking groove, allow multiple transfer racks to be nested together, saving space. The omnidirectional brake casters facilitate directional changes during use and accurate positioning when stacking adjacent transfer racks, improving work efficiency.
Owner:SUQIAN GENERAL GLASS CO LTD
An edge server, an edge computing system and a communication method thereof
The application discloses an edge server, an edge computing system and a communication method thereof. The method comprises the following steps: periodically acquiring, by the edge server, communication state information of each edge computing node in a topological network structure and edge computing nodes within a preset distance range around the edge computing node, inputting the acquired communication state information into a pre-established node connection decision model to obtain a real-time decision result, dynamically adjusting, based on the real-time decision result, a connection relationship of each edge computing node in the topological network structure and edge computing nodes within the preset distance range around the edge computing node to form an adaptive topological network structure, and performing data transmission by the edge server based on the adaptive topological network structure and each edge computing node. The topological network structure can be dynamically adjusted, and data can be stably and efficiently transmitted in a dynamically changing network environment.
Owner:RICHFIT INFORMATION TECH +1
A method for rapid high strength microwave bonding of ceramics to cemented carbide
This invention discloses a rapid, high-strength microwave bonding method for ceramics and cemented carbide, belonging to the field of ceramic material bonding technology. The method includes the following steps: preparing a metal solder; grinding, polishing, and cleaning the bonding surfaces of the ceramic and cemented carbide respectively; loading the prepared metal solder into a mold and pressing it under uniaxial pressure to obtain a metal solder sheet; placing the ceramic, metal solder sheet, and cemented carbide in a stacked structure in a microwave sintering furnace for microwave sintering to achieve the bonding of the ceramic and cemented carbide. Compared with traditional brazing and diffusion welding, this ceramic-cemented carbide microwave bonding method increases the heating / cooling rate by 6-10 times, improves the single-furnace bonding efficiency by 5-9 times, allows for mass production, and yields ceramic-cemented carbide bonding interfaces with high strength. This invention significantly improves production efficiency, reduces energy consumption, and has widespread application value.
Owner:NANJING UNIV OF SCI & TECH
A flexible material support and conveying device
ActiveCN224279197UGuaranteed continuous deliveryImprove efficiencySevering textilesArticle deliveryMaterials processingMechanical engineering
This utility model relates to the field of flexible material processing technology, and discloses a support and conveying device for flexible materials, including a housing; the housing is equipped with a conveying mechanism, which includes a transmission module, a guide module, and a support module; the support module includes several mounting parts and several multi-pronged parts that provide point support for the flexible material, with the multi-pronged parts located on top of the corresponding mounting parts, and the mounting parts arranged side by side at equal distances on the transmission module; the transmission module drives the mounting parts to move according to the transmission trajectory of the transmission module, and the transmission module supports and conveys the flexible material through the mounting parts and the multi-pronged parts. This utility model can ensure continuous conveying of flexible materials while allowing the cutting blade to perform cutting work normally, without stopping the conveying of flexible materials to wait for the cutting to complete, thereby ensuring the efficiency of cutting and conveying, and thus improving the efficiency of the entire processing flow.
Owner:武汉佰汇自动化科技有限公司
Inserting sheet frame capable of effectively protecting LOW-E surface of glass
ActiveCN224278949UImprove loading efficiencyeasy to useCharge manipulationConveyor partsStructural engineeringMechanical engineering
Owner:SUQIAN GENERAL GLASS CO LTD
A prefabrication device for low T-beam components using table formwork
ActiveCN224275530Uhigh utility valueEasy demoulding processDischarging arrangementMouldsClassical mechanicsMechanical engineering
This utility model relates to a prefabrication device for low-profile T-beam components using a formwork platform, comprising a platform, a bottom mold, and side molds. Lifting devices are provided on both sides of the bottom of the platform, and the bottom mold is installed in the center of the top of the platform. An anti-arch adjustment device is installed at the bottom of the bottom mold, and tensioning devices are installed on both sides of the top of the platform. These tensioning devices are horizontally connected to the side molds. By installing the anti-arch adjustment device at the bottom of the bottom mold, the device allows for height adjustment based on the longitudinal placement of the low-profile T-beam. The tensioning devices on both sides of the top of the platform are horizontally connected to the side molds, allowing for left-right adjustment of the tensioning dimensions according to the width of the low-profile T-beam component. This prefabrication device can both cast low-profile T-beam components and facilitates subsequent demolding, possessing high practical value.
Owner:JIANGSU XINGOU INTELLIGENT MFG TECH CO LTD
An optimization method for stabilizing photovoltaic power generation fluctuations based on scenario sets and distributed energy storage
ActiveCN114977244BMinimize securitystable powerGeneration forecast in ac networkSingle network parallel feeding arrangementsPower gridSolar Resource
An optimization method for stabilizing photovoltaic (PV) power generation fluctuations using distributed energy storage based on scenario sets is proposed. This method establishes a dispatchable capacity model for distributed energy storage based on its physical characteristics; establishes node voltage constraints and branch transmission capacity constraints for the distribution network; introduces reactive power regulation equipment to establish a dispatchable reactive power support range; and maintains power and voltage stability through distributed energy storage and various reactive power regulation devices while considering branch transmission capacity constraints. Finally, a coordinated optimization model for distributed energy storage based on PV power generation prediction scenarios is established. This invention prioritizes the basic safety of the distribution network and can be well applied to cities with abundant solar resources. By equipping distributed energy storage and certain reactive power regulation devices, it alleviates power and voltage fluctuations caused by intermittent PV power generation, thereby improving grid operational stability, reducing economic costs, and conserving resources.
Owner:JIANGSU OLITER ENERGY TECH CO LTD
Highly conductive thermoset resin-based composite material and method of making same
The application relates to the technical field of composite materials, in particular to a high-conductivity thermosetting resin-based composite material and a preparation method thereof, which contains the following components in parts by weight: 50-80 parts of epoxy resin, 10-30 parts of conductive carbon nanotubes, 20-40 parts of nano silver particles, 10-20 parts of functionalized polyurethane prepolymer, 5-15 parts of polyamine curing agent, 2-8 parts of organic silane coupling agent, 5-15 parts of graphene nanosheet, 5-15 parts of aluminum borate whisker, 5-15 parts of barium titanate nanoparticles, 2-10 parts of conductive polymer microspheres, 1-5 parts of nano zinc oxide; wherein the conductive polymer microspheres comprise a core composed of polyaniline or polypyrrole, and polyurethane polymer or polyacrylate polymer wrapped outside the core; the core surface is modified by nano silver particles and gamma-aminopropyl triethoxysilane; the conductive polymer microspheres are used for providing a long-range conductive path, the nano silver particles are used for providing short-range conductive connection, and the conductive polymer microspheres and the nano silver particles form a multi-level conductive network.
Owner:GONGSHENG (TIANJIN) NEW MATERIAL TECH PARTNERSHIP (LLP)
A method for quickly adjusting the conditions of a depletion furnace
This invention discloses a method for rapidly adjusting the furnace conditions of a lean-burn electric arc furnace, belonging to the field of pyrometallurgical nickel smelting technology. The method includes: measuring the height of the frozen layer inside the lean-burn electric arc furnace; when the frozen layer height is greater than 650 mm, simultaneously implementing coordinated control operations to reduce the slag oxidation depth (making the converter slag magnetic iron content <25%) and increase the reducing agent addition rate of the lean-burn electric arc furnace; after adjustment, measuring again, if the frozen layer height is less than 600 mm, restoring to normal process parameters; otherwise, repeating the adjustment until the target is met. This invention establishes a rapid response and upstream-downstream coordination mechanism based on the frozen layer as a criterion, which can effectively reduce the magnetic iron content in the slag, quickly eliminate excessively thick frozen layers, significantly improve slag fluidity, and ensure the stable and efficient operation of the lean-burn electric arc furnace system.
Owner:JINCHUAN GROUP NICKEL COBALT CO LTD
A magnetic template quick mold changing device
This utility model discloses a magnetic template quick-change device, which relates to the technical field of template changing devices. It includes a fixing component, a template component at the top of the fixing component, the template component comprising a module, a second permanent magnet block fixedly installed at the bottom of the module, and locking grooves at both ends of the module. The fixing component includes a housing, a lifting cavity inside the housing, a partition fixedly installed in the middle of the lifting cavity, a lifting plate slidably connected inside the lifting cavity, a first permanent magnet block fixedly installed at the top of the lifting plate, wedges fixedly installed at both ends of the lifting plate, and limit grooves inside both ends of the housing. Locking blocks are slidably connected inside the limit grooves, with one end of the locking block located inside the locking groove, and a wedge groove at the bottom of the locking block. This utility model can stably fix the template component when power is off, preventing loosening and detachment, and has high practical value.
Owner:GUANGDONG SHICHENGFU TECH CO LTD
A screening device and method for materials of different diameters
ActiveCN117244783Bwill not cause interferenceImprove work efficiencyGradingProduction lineControl cell
A radial material screening device and method are disclosed, relating to the technical field of material screening devices. The device includes a primary screening mechanism, a secondary screening mechanism, a screening channel, and a screening aperture control unit. The secondary screening mechanism includes a wheel-type sieve aperture inner diameter control unit, which is equipped with an elastic mimicry insert. The method includes screening out waste materials exceeding the upper and lower limits, and directionally dropping materials that meet the specified dimensions. This invention effectively solves the problem of poor adaptability of existing radial screening devices, which cannot be matched with automated production lines and affect subsequent processes. Through this invention, radial screening of materials can be achieved, removing waste materials exceeding the upper and lower limits, ensuring that the screened materials are fully free of impurities. Therefore, it will not interfere with subsequent automated production lines and can greatly improve the working efficiency of the entire production line.
Owner:QINGDAO CHOHO IND CO LTD
Optical fiber grinding jig for ferrule
ActiveCN224390778UEasy to fixEasy to insert and fixLapping machinesWork carriersRubber ringAnnular array
The utility model discloses a kind of optical fiber grinding fixtures of ferrule, the utility model relates to the technical field of grinding fixture, including installation component, the installation component includes mounting disc, the mounting disc top is equipped with a plurality of positioning slots, the positioning slot is annular array arrangement, the positioning slot inside is equipped with fixed component, the fixed component includes mounting block, the mounting block top is equipped with fixed block, the mounting block is engaged with positioning slot and is connected, the fixed block both ends top is equipped with first clamping block, the fixed block one end bottom is equipped with second clamping block, the first clamping block is engaged with second clamping block and is connected, the mounting block top end middle part is equipped with ferrule fixing seat, the ferrule fixing seat top is equipped with rubber ring;The utility model, different models of optical fiber ferrule can be fixed, with higher practical value.
Owner:DONGGUAN CHENGSHUO HARDWARE CO LTD
An ultramicro spectrophotometer cuvette detection structure
The utility model discloses a kind of ultramicro spectrophotometer cuvette detection structure, including operation platform, the rotating seat on the top of operation platform is rotatably connected with flip cover, main road optical fiber is equipped on the operation platform, the bottom of operation platform is also installed with cuvette placing box.The utility model passes through adopting double optical path design, pedestal and cuvette light path are independent, integrated design, without physical replacement spare part, by software selection "pedestal" or "cuvette card slot" mode, can effectively avoid cross contamination, when cuvette detection, directly cuvette is placed in the fixed slot beside pedestal, light path passes through incident optical fiber, aligns cuvette light transmission hole, the utility model structure is simple, without complex light path switching system, effectively solve the positioning problem and light energy loss problem of physical switching, improve the range of measurement, accuracy and reliability of equipment, convenient operation, convenient to carry, with higher practical value.
Owner:SHANGHAI MAPADA INSTR CO LTD
A device for controlling the spacing of reinforcing bars and the thickness of a concrete cover in a slip-form construction
ActiveCN224395564UAvoid CatonPrecise control of spacingFoundation engineeringBuilding material handlingBall bearingDesign standard
A kind of sliding formwork steel bar spacing and concrete cover thickness control device, belong to the technical field of water conservancy and hydropower engineering construction, including positioning angle steel, the positioning angle steel is fixedly connected on jack crossbeam, several positioning blocks evenly arranged are connected on the positioning angle steel along its length direction, positioning hole is opened in the positioning block, the hole wall of the positioning hole is recessed to form recess, several ball bearings are arranged in the recess along its circumferential direction.The positioning angle steel and the positioning hole in the utility model are arranged to accurately control the steel bar spacing and the concrete cover thickness, at the same time, the setting of ball bearing also avoids the steel bar that is inserted into positioning hole from being jammed, to ensure that the quality of sliding formwork construction concrete meets the design standard.
Owner:中国水利水电第七工程局有限公司
A rotatable and retractable air tube with connector
This utility model provides a rotatable and retractable trachea with connectors, belonging to the field of tracheal tube technology. It includes a trachea body and trachea connectors. The trachea body includes a corrugated trachea with connectors at both ends, each connector being threaded to the trachea connector. The trachea connector includes a first connector and a second connector. The first connector has a first connecting sleeve at its tail end, with a first threaded groove inside. The first connector has a retractable first sealing plug inside, and the second connector also has a retractable second sealing plug inside. Both the first and second sealing plugs have sealing layers on their outer sides.
Owner:WEIHAI SHENGFENG PLASTIC PROD CO LTD
A pressure gauge device of a liquid crystal combination instrument production equipment
ActiveCN224303974UAchieve front and rear positioningAchieve centering clampingVibration suppression adjustmentsNon-linear opticsMechanical engineeringLiquid crystal
The utility model provides the pressure gauge device of liquid crystal combination instrument production facility belongs to production facility technical field. Including main part mechanism, elevating system and positioning mechanism, the main part mechanism includes base, the base upper end is erected with the frame, the frame four struts inside all are equipped with the slide bar, the base lower extreme is equipped with four groups of support leg, the frame is installed with elevating system, the elevating system includes upper connecting plate and lower connecting plate, upper connecting plate and lower connecting plate four ends all are equipped with the sliding block and slide bar sliding connection, the positioning mechanism includes the mobile tray, the base upper end is equipped with the slide rail, the slide rail with mobile tray sliding connection.
Owner:CHONGQING PAIZE MOTORCYCLE PARTS CO LTD
Automatic conveying and testing integrated device for high-voltage electrical boxes
ActiveCN224278530UImprove stabilityGuaranteed accuracyConveyorsConveyor partsProduction lineProcess engineering
This utility model relates to the technical field of high-voltage electrical box testing equipment, and more particularly to an integrated automatic conveying and testing device for high-voltage electrical boxes. It includes a conveying unit with two parallel roller conveyor belts for transport and multiple lifting devices; a testing fixture module located above the conveying unit, which includes a testing platform, multiple quick-connect test interfaces surrounding the testing platform, and a clamping and positioning module. The beneficial effects of this utility model are: this technical solution significantly improves the stability of the high-voltage electrical box during the testing process by integrating the clamping and positioning module and the testing station module, and ensures the accuracy of the test data. At the same time, the device has good compatibility, can meet the flexible production needs of multiple varieties and small batches, and greatly improves the automation level and operating efficiency of the production line, thus possessing high practical value.
Owner:昆山仲聚新能源科技有限公司
A positive and negative rotation elastic cord device
This invention relates to the field of daily necessities technology and discloses a reversible rope tightening and loosening device, including a knob, a ratchet disc, a wheel chamber, a clutch, and a reel. The invention, through the assembly of the knob, ratchet disc, wheel chamber, clutch, and reel, allows for tightening and loosening of the rope by rotating the knob in either direction. After the two ends of the rope are wound into the groove through the rope threading hole from the threading platform, the tightening and loosening states can be switched by rotating the knob in either direction. When the knob is rotated in the forward direction, the clutch engages with the reel, thus driving the reel to rotate in the forward direction to establish a tightened state. When the knob is rotated in the reverse direction, the elastic deformation of the clutch causes the wedge-shaped stop of the clutch to disengage from the inner circumference of the reel, allowing the reel to rotate freely and establishing a loosened state. This device has tightening, loosening, and rewinding states, making it convenient for daily use and possessing high practical value.
Owner:河源市大邦科技有限公司
一种管道直连多通阀及医疗阀岛
Owner:SHANGHAI HAIZHI IND TECH CO LTD
Air pump double piston
ActiveCN224282866UClear air intakeClearly venting angerPositive displacement pump componentsPositive-displacement liquid enginesRubber ringAir pump
This utility model provides a bidirectional piston for an air pump, including a piston body. An air pump body is provided on the outside of the piston body, dividing the air pump body into an upper air chamber and a lower air chamber. An inner cylinder is provided at the center of the piston body, and an outer cylinder is sleeved on the outside of the inner cylinder. The inner cylinder is connected to the inner tube of the air pump, and the outer cylinder is connected to the outer tube of the air pump. Multiple sets of reinforcing members are arranged around the outer wall of the outer cylinder. The piston outer wall is provided on the outside of the reinforcing members. A groove is provided on the lower part of the piston outer wall and the reinforcing members. A sealing rubber ring is provided inside the groove. The lower end of the inner cylinder is connected to a first air guide channel. The outlet end of the first air guide channel is connected to the groove. An upper valve port and a lower valve port are symmetrically opened at the upper and lower centers of the piston body. The outer cylinder and the inner cylinder form a third air guide channel. The lower end of the third air guide channel is connected to a second air guide channel. The second air guide channel is located inside the piston body and is used to connect to the upper valve port and the lower valve port respectively.
Owner:WEIHAI SHENGFENG PLASTIC PROD CO LTD
An airport pavement panel testing machine
ActiveCN224317460UThe detection method is close to realityhigh utility valueInvestigating abrasion/wear resistanceMarine engineeringAirplane
This utility model discloses an airport pavement panel testing machine, relating to the field of abrasion resistance testing technology. The testing machine includes a base with a specimen fixing groove at its upper end; a support frame including a first support plate and a second support plate located at the left and right ends of the upper surface of the base; an aircraft take-off and landing simulation mechanism located between the first and second support plates; an aircraft simulation device connected to the aircraft take-off and landing simulation mechanism, with rubber wheels at the bottom of the aircraft simulation device for contacting the specimen surface; and a specimen, which is an airport pavement panel specimen with an abrasion-resistant layer on its surface. This utility model can perform multi-mode testing of the abrasion resistance performance of the specimen surface, providing data reference for pavement panel improvement and aircraft flight safety.
Owner:AIRPORT CONSTR ENG CO LTD
A transformer on-line fault diagnosis and early warning method based on transformer transformation ratio
The application relates to a transformer on-line fault diagnosis and early warning method based on transformer transformation ratio, which comprises the following steps: collecting primary side and secondary side voltages of the transformer in real time, and calculating corresponding real-time voltage transformation ratio; comparing the real-time voltage transformation ratio with the rated transformation ratio of the transformer to determine whether the transformer is faulty and the fault type; based on the real-time voltage transformation ratio, transformation ratio prediction is carried out to obtain a transformation ratio prediction value; the transformation ratio prediction value is compared with the rated transformation ratio of the transformer to determine whether early warning is needed; if early warning is needed, the transformation ratio prediction value is compared with the rated transformation ratio of the transformer to determine whether the transformer is faulty and the fault type. Compared with the prior art, the application directly uses voltage parameters to diagnose the transformer fault, can comprehensively, accurately and quickly identify the transformer fault, and simultaneously adopts a prediction algorithm, can realize timely fault early warning by transformation ratio prediction of the transformer.
Owner:浙江交投高速公路运营管理有限公司 +2
A communication base station antenna angle adjusting device
The utility model discloses a kind of communication base station antenna angle adjusting devices, belong to communication base station technical field.This kind of communication base station antenna angle adjusting device, including base, the top of base is equipped with first angle adjusting mechanism, the output end of first angle adjusting mechanism is equipped with stand, the outside of stand is equipped with connecting sleeve, one side of connecting sleeve is equipped with cross bar, one end of cross bar is equipped with second angle adjusting mechanism, the output end of second angle adjusting mechanism is equipped with connecting rod, one end of connecting rod is equipped with antenna mounting plate, first angle adjusting mechanism includes first machine case, the bottom of first machine case and the top of base are fixedly connected, the top of first machine case is equipped with first turntable, the top of first turntable and the bottom of stand are fixedly connected, the inside bottom of first machine case is rotatably connected with first rotating shaft, the utility model can effectively realize two-way angle adjusting function, improve angle adjusting range, with higher practical value.
Owner:DONGGUAN TOGE MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD