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49results about How to "Control precision" patented technology
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Unmanned aerial vehicle control method and system
InactiveCN119625578AHigh precisioncontrol precisionImage enhancementImage analysisEngineeringTime data
The invention discloses an unmanned aerial vehicle control method and system, relates to the technical field of flight path control, and solves the problems of insufficient image acquisition precision, inaccurate routing inspection path planning and limited real-time data analysis capability. Through an image acquisition and enhancement module, a real-time image enhancement algorithm and a multi-image comparative analysis module, the focal length and exposure parameters of a camera are dynamically adjusted, the image definition in a complex environment is improved in combination with evaluation of an image enhancement effect value Enh and an effect threshold E, and a dimensionless size value Fdz, a position value Fdw and a relative distance value Fjl of a fault point are extracted; the image acquisition quality is effectively controlled; the environment modeling module is used for generating a three-dimensional model containing cable and obstacle information, ensuring that the path coverage value Qcd reaches the standard and avoiding an inspection blind area; and an airborne data processing mechanism is combined with an electromagnetic interference prediction and collision prediction model, so that real-time fault analysis and alarm are realized, the detection efficiency is improved, and the data real-time performance is ensured.
Owner:TONGJIAN ELECTRICAL APPLIANCES MFG BAODING CITY
Data processing method and device based on visual database and electronic equipment
ActiveCN119669345AImprove analysis efficiencyImprove decision-making efficiencySemantic analysisVisual data miningDatasheetData set
The invention discloses a data processing method and device based on a visual database and electronic equipment, and relates to the field of data processing. The method comprises the following steps: acquiring a data processing request of a user; analyzing the data processing request to obtain a corresponding key field and a logic conjunction; according to the key field, performing semantic matching in a preset data model library to obtain a corresponding target data table and a target field; synthesizing the logic conjunction, the target data table and the target field to generate a corresponding database processing statement; executing the database processing statement, and obtaining a result data set generated after the database processing statement is executed; and transmitting the result data set to a visual database terminal, and displaying the result data set on the visual database terminal according to a preset visual template. By implementing the technical scheme provided by the invention, the data query efficiency is improved.
Owner:SAIER DIGITAL (BEIJING) TECH CO LTD
Manufacturing process of high-frequency and high-precision resistance device
InactiveCN119626693Aprecise size controlreduce sizeEnvelope/housing resistor manufactureResistor trimmingElectrical resistance and conductanceManufacturing technology
The invention relates to the technical field of resistor manufacturing, in particular to a manufacturing process of a high-frequency and high-precision resistor device. Comprising the following steps: S1, substrate molding: molding substrate material powder into a required substrate shape through pressing or a mold, and carrying out sintering molding; s2, depositing a conductive thin film: depositing a layer of extremely thin conductive thin film on the substrate, and manufacturing resistive layers with different thicknesses by using a nickel-chromium alloy material to adapt to various resistance values; s3, photoetching and etching: generating a pattern through photoetching or laser trimming, increasing a resistance path and calibrating a resistance value to ensure that the resistance value is within a design range; s4, adjusting a resistance value; s5, surface treatment; and S6, screening and packaging. According to the method, the precision and the performance are controlled through the steps of calibrating the resistance value in the technological process, accurately controlling the resistance pattern through laser energy and accurately controlling the size of the pattern, so that the final product can meet the requirements of high frequency and high precision.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Built-in hydraulic lifting creeping formwork construction method for hollow pier of extra-large cable bent tower bridge
PendingCN119392614AGuaranteed accuracycontrol precisionBridge structural detailsBridge erection/assemblyArchitectural engineeringTower crane
The invention relates to a built-in hydraulic lifting creeping formwork construction method for an extra-large cable tower bridge hollow pier, and belongs to the technical field of creeping formworks. Comprising the following steps: S1, determining the position of a pier body; s2, scabbling the top surface of the base; s3, the side wall of the first-section hollow pier is poured; s4, a hydraulic creeping formwork system is assembled; s5, the inner formwork and the outer formwork are hoisted; s6, outer formwork modules are installed, then assembled backward moving devices are hoisted to the top face of a hydraulic creeping formwork system through a tower crane and connected with the outer formworks, positioning mechanisms are arranged between every two adjacent outer formworks, and the four outer formworks are enclosed through the positioning mechanisms and tightly attached to the outer side wall of the first section of hollow pier; s7, an inner formwork module is assembled; s8, closing the mold and pouring; s9, creeping formwork construction is conducted; s10, circulating construction is conducted; the problems that in a hollow pier built-in creeping formwork construction method, the construction precision of the hollow pier wall is low, and the construction efficiency is low are solved.
Owner:CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP FOURTH ENGINEERING CO LTD +2
Feed-forward suppression method for starting interference of etching machine
InactiveCN119542105Acontrol precisionElectric discharge tubesTemperatue controlRadio frequencyMechanical engineering
The invention provides a feedforward suppression method for starting interference of an etching machine, the control input of the etching machine is a heat source controlled by a heater, the heater is controlled by a feedforward controller, and the suppression method comprises the following steps: determining a disturbance transfer function between measured input disturbance and cavity output; determining a heater transfer function between the heater and the cavity output; measuring actual disturbance introduced to the etching machine when the radio frequency power supply is started; the heater is controlled according to a feed-forward control transfer function in the feed-forward controller, wherein the feed-forward control transfer function is represented by a ratio of the perturbation transfer function to the heater transfer function. According to the invention, the problem of heat source interference caused by etching starting is solved, and the temperature difference in the process cavity before and after starting is within the threshold range.
Owner:SHANGHAI JIYI TECH CO LTD
Weld-neck flange totally-closed rolling forming die and forming process
The invention belongs to the technical field of metal plate non-cutting machining, particularly relates to a welding neck flange totally-closed rolling forming die and a forming process, and aims to solve the problems that an existing process is more in step, low in rolling efficiency and incapable of accurately rolling the appearance. The welding neck flange totally-closed rolling forming die comprises a base, and a box body is fixed to the top of the base; one side of the box body is in sliding fit with two door leaves which are used for sealing the interior of the box body; the movable box slides on the inner wall of the top of the box body, a mandrel penetrates through the bottom of the movable box and is used for punching and rolling blanks, and a rotating ring is rotationally arranged at the top of the base. After punching, the mandrel is matched with the rolling die and the moulding bed to directly conduct rolling operation, the rolling procedures are reduced, and the production efficiency is improved. In addition, in the rolling process, the height of the blank can be limited through cooperation of an air cylinder, a lower moving ring and a conical wheel, and the forming accuracy of the blank is greatly controlled.
Owner:SHANXI YONGXIN FORGING CO LTD
Bag filter with controllable filtering precision for preventing and treating environmental pollution
InactiveCN119633472Aavoid enteringavoid scratchesGravity filtersStationary filtering element filtersWastewaterScrew thread
The invention discloses an environmental pollution prevention and control bag filter with controllable filtering precision, and relates to the technical field of bag filters, the environmental pollution prevention and control bag filter comprises a shell, two groups of support legs are symmetrically mounted outside the shell, a water inlet pipe is connected to the upper part of one side of the shell in a penetrating manner, and a water outlet pipe is connected to the bottom of the shell in a penetrating manner; an end cover is arranged at the top of the shell, a sealing gasket is arranged at the connecting position of the end cover and the shell, the fixing seat is fixedly installed above one side of the shell, a supporting frame is rotationally connected to the top of the fixing seat, a threaded sleeve is fixedly installed at one end of the supporting frame, a threaded rod is in threaded connection with the interior of the threaded sleeve, and the threaded rod is in threaded connection with the threaded rod. Meanwhile, the screw rod is rotationally connected with the end cover; through the arrangement of the filter element, large-size sharp impurities in wastewater can be filtered when the wastewater is filtered, the sharp impurities are prevented from entering a filter bag, the filter bag is prevented from being scratched, the subsequent filtering operation is prevented from being influenced, and the practicability is improved.
Owner:SHANGHAI ZHANJIN FILTER MATERIAL CO LTD
Walking steering device for robot
ActiveCN222554992UImprove precision controlcontrol precisionElectrical steeringMotor depositionSimulationElectric machinery
The utility model discloses a walking steering device for a robot, which comprises a steering part connected to the bottom of the robot, and the bottom of the steering part is connected with a walking part. A joint motor with high-precision control is selected, meanwhile, a spigot assembly structure in the transmission process is designed, mechanical errors are controlled to the maximum degree, and therefore position changes of the robot can be accurately controlled no matter walking or steering is conducted. On the field unmanned plant protection equipment, in cooperation with Beidou navigation and image recognition technologies, the precision of the whole equipment in field operation can be controlled to the maximum extent, the damage rate of crops caused by equipment position deviation is greatly reduced, and meanwhile the operation completion rate is increased. The joint motor is matched with the walking machine frame, the overall width of the walking mechanism can be controlled to be small, and therefore the walking mechanism has better adaptability to different crops with different plant spacing and can be widely used and popularized.
Owner:GANSU JINKEFENG AGRI EQUIP ENG CO LTD
Oxygen mixing proportional valve calibration and control method
The invention provides an oxygen mixing proportional valve calibration and control method which comprises the steps that a current-flow corresponding relation table of an oxygen mixing proportional valve is inquired according to target oxygen flow, and feed-forward opening current of the oxygen mixing proportional valve is obtained; an active-disturbance-rejection controller is adopted, a control loop with an oxygen concentration sensor as a closed loop is adopted, and input current of the oxygen mixing proportional valve is controlled in real time; the current-flow corresponding relation table of the oxygen mixing proportional valve is obtained by performing double-thread calibration on the oxygen mixing proportional valve. The method has the advantages that the oxygen mixing proportional valve is subjected to double-thread calibration, and the processes of oxygen concentration from small to large and from large to small can be accurately controlled; an active-disturbance-rejection control algorithm is adopted, the test process of adjusting PID parameter setting is omitted, and meanwhile the control precision and the measurement precision of a proportional valve-oxygen concentration control system can be met and are both within the error range.
Owner:HEYER MEDICAL CO LTD
Quartz tube end face automatic grouping detection device
ActiveCN119246552Bgood depth of fieldWide field of visionHollow article cleaningPreparing sample for investigation
The invention relates to the technical field of optical end face detection, and discloses an automatic grouping detection device for the end faces of a quartz tube, comprising an operating cabinet, a guide rail is installed on the top of the operating cabinet, a placing table is installed on the top of the guide rail, a detection module is installed on the outer surface of the guide rail, and a dynamic stop detection component for reducing the depth of field effect during the detection process is arranged inside the operating cabinet, the dynamic stop detection component comprises an L-shaped power seat and a power rod for pulling the detection module by rotating itself, thereby reducing the influence of the depth of field effect on the detection accuracy, and the invention introduces a rotation mechanism of the power rod to drive the L-shaped power seat to rotate synchronously, thereby pulling the detection module to move along a specific trajectory, so that the detection module realizes a movement mode of first moving away and then approaching, and then by changing the distance between the detection module and the end face of the quartz tube, the depth of field effect is effectively improved, and in the process of moving away from the quartz tube, the detection module can capture a wider field of view.
Owner:HANGZHOU HONGXIN MICRO SEMICON CO LTD
Turning device for automobile casting parts
ActiveCN119426634Aquick switchImprove processing efficiencyLarge fixed membersTurning machinesTool bitElectric machinery
The invention relates to the technical field of turning devices, and discloses an automobile casting part turning device which comprises a base and a control module, a gas control structure is arranged in the base, the interior of the base is hollow, the gas control structure is composed of a gas storage bag and a gas control valve, a base is fixedly installed at the bottom end of the base, and the control module is fixedly installed on the base. According to the turning machining device for the automobile casting parts, the two pairs of transmission assemblies and driving assemblies are arranged, the transmission assemblies can be driven to rotate through driving of the driving assemblies, and then the tool bit structure is driven to move; in this way, the distance between the machining positions on the two sides is adjusted, inner motors are installed at the positions, located in the moving assemblies, of the bottom ends of the tool bit structures to drive the tool bit structures to rotate, in this way, the different tool bit structures can be rotated to the machining positions, then rapid switching of tool bits of the machining device is achieved, and the machining and using efficiency of the device is greatly improved.
Owner:TAIAN XINXINGDA MASCH MFG CO LTD
Concrete test block anti-counterfeiting system and anti-counterfeiting method
ActiveCN119151564BImprove adaptabilityImprove reliabilityCo-operative working arrangementsCommerceQuality control systemQuality control
The present invention discloses a concrete test block anti-counterfeiting system and anti-counterfeiting method, which belongs to the field of concrete detection technology; it includes an anti-counterfeiting label card, and a sample preparation end and a laboratory end that communicate with a server and identify the anti-counterfeiting label card; the anti-counterfeiting label card includes: a substrate, an identification code and a direction indicator set on the front of the substrate, and a bending foot for fixing the substrate; the laboratory end performs anti-counterfeiting verification by identifying the installation orientation, angle, and distance of the anti-counterfeiting label card. The present invention significantly improves anti-counterfeiting security, enhances reliability, improves verification efficiency, and improves environmental adaptability; at the same time, it is connected to the laboratory and supervision platform to achieve connection and integration with the existing system; in addition, the system is set according to the national building materials management standards, compatible with other quality control systems, and easy to integrate into the existing management system, which promotes the industry standardization process and reduces the implementation cost.
Owner:LUOYANG LINGKE CONSTR ENG QUALITY INSPECTION CO LTD +1
Bus duct production copper bar automatic welding device
This invention provides an automatic copper busbar welding device for busbar trunking production, relating to the field of busbar trunking welding. The automatic copper busbar welding device for busbar trunking production includes two docking components. Each docking component includes a YZ axis assembly, a flipping assembly, a clamping platform, a drive assembly, a fixing assembly, and a preheating assembly. The flipping assembly is mounted on the YZ axis assembly and can automatically move along the Y and Z axes based on the YZ axis assembly. The clamping platform is mounted on the flipping assembly and can switch between horizontal and vertical 90-degree angles. The drive assembly, fixing assembly, and preheating assembly are all mounted on the clamping platform. This automatic copper busbar welding device for busbar trunking production, by setting up the drive assembly and fixing assembly, can clamp copper busbars specifically for busbar trunking. Even with thin copper busbars, drive transmission can be achieved. It is applicable to both long and short copper busbars. The fixing assembly can clamp the copper busbars, facilitating precise welding later.
Owner:GUANGDONG WEIJIE POWER TECH CO LTD
Device for measuring activity of cells in cell culture dish
ActiveCN222556941UGood dispersionreduce pollutionBioreactor/fermenter combinationsBiological substance pretreatmentsPetri dishProcess engineering
The utility model provides a cell viability measuring device in a cell culture dish, which belongs to the technical field of measuring devices and comprises a base, the base is connected with a detection sensor, a humidifier and a display instrument, one end of the detection sensor is provided with a detection head, and the base is connected with a control button, a humidity sensor, a sealing door and a temperature sensor. An electric turntable and a placement table are arranged in the base, an electric heating plate and a culture dish are arranged in the placement table, the placement table is connected with a partition plate, and the culture dish is connected with a connecting ring. The culture dish has the beneficial effects that the culture dish is prevented from being accidentally splashed into other culture dishes to cause pollution through the partition plate; meanwhile, fan blades are driven to rotate in the fixed cylinder while the partition plate rotates, so that air flow is better increased, the diffusion speed of temperature or humidity can be increased during heating or humidifying, efficiency is improved, diffusion uniformity is guaranteed, and detection accuracy is improved.
Owner:ANHUI KANGPULE BIOTECHNOLOGY CO LTD
Quantitative feeding device for solid chemical raw materials
ActiveCN222561106Ushorten the timeIncrease productivitySpecial purpose weighing apparatusData signalElectric machinery
The utility model discloses a quantitative feeding device for solid chemical raw materials. The quantitative feeding device comprises a weighing tank, a pressure sensor is arranged at the bottom of the mounting column; the bottom face of the first connecting end is fixedly connected with a spring. According to the scheme, when raw materials enter the weighing tank, under the action of gravity, the connecting frame located in the mounting column gradually moves downwards, the spring is made to generate tensile deformation, and in the process that the connecting frame gradually moves downwards, the bottom end of the contact rod makes contact with the pressure sensor, so that the pressure sensor can sense gravity data of the weighing tank; when the raw materials in the weighing tank reach the required weight and the control terminal receives a data signal from the pressure sensor, the first motor arranged on the surface of the weighing tank is controlled to drive the sealing partition plate to turn over at the moment, the corresponding amount of the raw materials can be added into processing equipment, and therefore direct weighing and quantitative feeding of the raw materials are achieved. And the time required for transferring the raw materials is saved, so that the production efficiency is improved.
Owner:ANDA HAINA BEIER CHEM CO LTD
Weak plane coring method and system based on CT scanning
PendingCN119574182AMeet the experimental needsmeet visualizationMaterial analysis using wave/particle radiationWithdrawing sample devicesRock coreComputational physics
The invention discloses a weak plane coring method and system based on CT scanning. The method comprises the following steps: obtaining a three-dimensional structure diagram of an original rock core sample; performing weak surface identification on the original rock core sample according to the three-dimensional structure diagram to obtain a weak structural surface and characteristics of the original rock core sample; and marking the coring position, shape and size on the weak structural plane, and coring the original core sample. The weak structural plane of the rock sample can be accurately judged, the coring requirement of an experiment is met, and the sampling precision is effectively improved.
Owner:PETROCHINA CO LTD +1
A special tool for stripping the semi-conductive layer of a cable
ActiveCN118739125Bcontrol speedcontrol precisionApparatus for removing/armouring cablesElectronic waste recycling
Owner:STATE GRID QINGHAI ELECTRIC POWER CO HAINAN POWER SUPPLY CO +1
Distributed collaborative simulation method, device, equipment and medium for satellite system
ActiveCN119358148Bavoid jitterHigh time accuracyGeometric CADInterprogram communicationReflective memoryEngineering
The present application discloses a distributed collaborative simulation method, device, equipment and medium for satellite systems. The method includes: synchronously starting the clock pulse cards of M simulation machines, and transmitting pulse signals through the clock pulse cards; when the synchronized node receives the pulse signal, executing a simulation operation through the synchronized node, and writing the current total simulation steps of the synchronized node into the shared memory corresponding to the corresponding simulation machine; reading the shared memory of the corresponding simulation machine in real time through the distributed simulation node, and when the N current total simulation steps read in the shared memory are consistent, determining that the current one-step simulation operation of the corresponding simulation machine has been completed, and writing the current total execution steps of the corresponding simulation machine into the VMIC reflection memory card through the distributed simulation node; when the M current total execution steps in the VMIC reflection memory card are consistent, determining that the current one-step simulation operation of the distributed simulation system has been completed.
Owner:HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
Arc extinguishing control system and method for relay of emergency power supply
ActiveEP4318840A4low costImprove current carrying capacityHigh-tension/heavy-dress switchesEmergency protective arrangements for limiting excess voltage/current
Disclosed in the present invention are an arc extinguishing control system and method for a relay of an emergency power supply, which relate to the field of power supplies. A relay serves as a main switching circuit for controlling an emergency power supply, and electronic switching tubes are connected in parallel to two ends of the relay, so as to quickly withstand a voltage jump when the relay is switched off, and thus, the relay is prevented from generating an arc spark, the common problems of existing relays, such as arc damage and an internal resistance increase, are solved, and the relay that has a lower cost and a higher current withstand capability and does not need an additional heat sink is used as a device for controlling the switching on and off, such that an emergency start power supply of a vehicle has better safety, durability and market efficiency. Moreover, when the phenomenon of large-current reverse charging occurring after the vehicle is started is faced, a reverse charging sensing circuit and a reverse charging feedback circuit are used, so that a reverse charging current is directly fed back to a control end of an electronic switching tube when a storage battery is reversely charged by a load, thereby realizing the quick switching off of the electronic switching tube.
Owner:SHENZHEN GREPOW BATTERY CO LTD
A retractor for minimally invasive thyroid surgery
InactiveCN115349902Bcontrol precisionImprove ease of useSurgeryMechanical engineeringAbnormal thyroid
The present invention relates to the technical field of thyroid minimally invasive surgery instruments, and discloses a retractor for thyroid minimally invasive surgery, which comprises a handle, on which a rotating shaft rod is provided, one end of the rotating shaft rod is rotatably arranged on the handle, and the other end of the rotating shaft rod is provided with a retractor for thyroid minimally invasive surgery; an operating swing rod, one end of which is rotatably arranged on the handle, and the other end of the operating swing rod extends out of the handle, and the operating swing rod rotates to have a first position biased toward one side of the handle, a second position biased toward the other side of the handle, and an intermediate position between the first position and the second position; and a transmission device for transmission connection between the operating swing rod and the rotating shaft rod. The retractor can rotate quantitatively, which is convenient for medical staff to control the rotation angle of the retractor.
Owner:THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
Method and device for improving mechanical fatigue performance of submarine cable flexible joint
ActiveCN119571045APrevent splash effectEnsure consistencyGeometric CADConfiguration CADComputer control systemClassical mechanics
The invention provides a method and device for improving the mechanical fatigue performance of a submarine cable flexible joint, and relates to the technical field of ocean engineering. The method comprises the following steps: firstly, measuring the surface roughness and the residual stress of the soft joint before treatment to obtain a first measurement value, obtaining the geometric profile precision of the soft joint before treatment, determining the residual stress design value and the surface roughness design value of the soft joint according to a fatigue life target, and determining the geometric profile precision of the soft joint according to the first measurement value and the design value; required laser peening parameters are determined in a second database, and laser peening treatment is carried out on the surface of the flexible joint according to the parameters until the geometric profile precision, the surface roughness and the residual stress of the flexible joint all meet the design requirements; the device comprises a computer control system, a laser power supply, laser shot blasting equipment, a transmitting mirror group, a part clamping robot and a water coating robot, according to the method and the device provided by the invention, the tensile property, the fatigue resistance and the electrochemical corrosion resistance of the flexible joint can be improved.
Owner:GUANGDONG UNIV OF TECH
Hydraulic drive valve element locking and dismounting device
PendingCN119388115AHigh precisionoperational securityMetal working apparatusDiaphragm pumpControl theory
The invention discloses a hydraulically-driven valve element locking and dismounting device, belongs to the technical field of diaphragm pump assembling tools, and particularly relates to a quick locking and dismounting device for a diaphragm pump fluid end valve element. The hydraulic drive valve element locking and dismounting device is convenient to use, reduces the labor intensity and improves the working efficiency. The device comprises a frame and is characterized in that a horizontal moving tray is arranged at the bottom in the frame, and a positioning groove matched with a valve element is formed in the horizontal moving tray; a lifting adjusting support is arranged at the top of the frame, a clamping groove is formed in the middle of the lifting adjusting support, a limiting plate is correspondingly arranged above the clamping groove, a locking mechanism matched with the upper end of the valve element is arranged on the limiting plate, and a power head matched with the locking mechanism is arranged above the locking mechanism.
Owner:NFC SHENYANG PUMP IND
Broaching tool chuck structure of horizontal broaching machine
ActiveCN222552330UImprove versatilityAvoid frequent replacementBroaching machinesInterference fitBroaching
The utility model discloses a broaching tool chuck structure of a horizontal broaching machine. The broaching tool chuck structure comprises a tool clamping body tool apron and a tool jacking block arranged on the tool clamping body tool apron, a tool chamber used for containing a broaching tool is arranged between the tool clamping body tool apron and the tool jacking block, a stop pin is arranged below the tool chamber and on the tool clamping body tool apron, and an adjusting piece used for fixing the broaching tool is arranged above the stop pin. The stop pin is in interference fit with the cutter holder of the cutter clamping body, and the adjusting piece is detachably connected with the top of the stop pin; the adjusting piece comprises an inner hexagon screw capable of adjusting the height of the adjusting piece and a hexagon nut used for fixing the inner hexagon screw. According to the utility model, the adjusting piece composed of the inner hexagon screw with adjustable height and the hexagon nut is arranged to replace a stop pin with a fixed size, so that the problem that the stop pin cannot be shared when parts and broaches with different specifications are replaced is solved, the universality of the stop pin is realized, frequent replacement of the stop pin is avoided, and the processing efficiency is improved.
Owner:CHANGSHA SISHENG INTELLIGENT EQUIP
Anti-deformation machining tool for thin-journal steam turbine rotor
ActiveCN222370919UImprove rigidityImprove anti-deformationPositioning apparatusMetal-working holdersPlanishingSteam turbine rotor
The anti-deformation machining tool for the thin-journal steam turbine rotor comprises a thin-journal connecting sleeve, the thin-journal connecting sleeve is composed of three sections of sleeves, the three sections of sleeves comprise two or three sleeves with different diameters, one to two steps are formed in the sleeves, welding grooves are formed in the three sections of sleeves when the three sections of sleeves are welded, and the welding grooves are connected and fixed through electric welding; the external diameters of the sleeves are the same, and the connection structure of the adjacent sleeves is that the connection parts of the adjacent large-diameter cylindrical sleeves and small-diameter cylindrical sleeves are matched steps, so that a structure with different diameters of sleeves is formed; matched steps are arranged at the joints of the adjacent large-diameter cylinder sleeves and the secondary-diameter cylinder sleeves, steps with square corners matched with square concave parts are arranged at the joints of the secondary-diameter cylinder sleeves and the small-diameter cylinder sleeves, and the joints of the steps are welded and ground to be flat.
Owner:WUXI RUNHE VANE MFG CO LTD +1
A construction engineering technology measuring device
ActiveCN120830792Bprecise level adjustmentcontrol precisionSurveying instrumentsStands/trestlesMeasuring instrumentMechanical engineering
The application discloses a kind of construction engineering technical measuring devices, specifically related to construction engineering measurement technical field, a kind of construction engineering technical measuring device, including connecting seat, supporting foot rest is equipped in the bottom of connecting seat, clamping mechanism is installed in the top of connecting seat, measuring instrument is equipped in the top of clamping mechanism, connecting seat includes fixed base and adjusting base;Clamping mechanism is installed in the top of adjusting base, supporting foot rest is rotatably connected in the bottom of fixed base, adjusting base spherical sleeve is connected in the outside of fixed base;Fixed base is equipped with adjusting ball in, and there is moisture in, adjusting ball outside is from the center of the bottom of fixed base and is equipped with receiving rod, and counterweight is equipped on receiving rod;Adjusting ball outside is from the center of the top of fixed base and is connected with the center of the bottom in adjusting base;Adjusting ball inner wall is equipped with inner connecting rod, and inner connecting rod bottom end is equipped with half-submerged in the water surface below float block.The effect of float block and counterweight can be quickly and accurately corrected horizontally.
Owner:RUZHOU RUICHEN REAL ESTATE CO LTD
A clamping tool for the remelting of billets during the box assembly process
ActiveCN224619997UEasy and safe transferControl precision
This utility model discloses a clamping tool for the packing process of remelted billets, belonging to the field of workshop packing tooling equipment. It includes a hollow cylindrical shell with several lifting lugs on its exterior. Two through holes are formed through the middle of the side wall of the hollow cylindrical shell. A chuck is installed inside each through hole, and a removable plug is installed outside. A spring is installed between the chuck and the removable plug. This utility model allows for convenient and quick transfer of remelted billets, reducing manual labor intensity and improving operational safety and efficiency.
Owner:SINOSTEEL XINGTAI MACHINERY & MILL ROLL
A low-cost soft mold manufacturing method applicable to T-stiffener reinforced skin structure
The application discloses a low-cost soft mold manufacturing method applicable to a T-shaped rib reinforced skin structure, and comprises the following steps: adopting an isolation film and a vacuum bag to integrally encapsulate a laminated plate skin blank body, a T-shaped rib blank body and a T-shaped soft mold on a forming tool; adopting a hot press tank to perform co-curing forming of a "wet" state laminated plate skin and a "wet" state T-shaped rib according to the curing requirements allowed by the material specification of carbon fiber prepreg, and obtaining the T-shaped rib reinforced skin structure; the application has the beneficial effects that: through the structure splitting of step S1, the customization of special tooling (a forming tool, a T-shaped rib pre-compaction tool and a soft mold forming tool), the accurate positioning and cooperation of step S4 and the co-curing forming of the "wet" state laminated plate skin and the "wet" state T-shaped rib of step S6, the defects of poor adaptability of the T-shaped rib to the skin, easy interference of R angles, easy wrinkling of edges and the need of post-grinding in the traditional gluing process are effectively solved.
Owner:SPACE SEAHAWKS ZHENJIANG SPECIAL MATERIAL CO LTD
Plastic mold steel and heat treatment process
The present application belongs to the field of heat treatment technology of plastic mold steel, and the present application discloses a plastic mold steel and a heat treatment process. The heat treatment process of the plastic mold steel in the present application includes the steps of melting and pouring raw materials into steel ingots, performing high temperature diffusion heat treatment on the steel ingots in sequence, hot rolling, annealing, isothermal quenching and air cooling, oil cooling and quenching, and tempering. The present application optimizes the component design and is equipped with an effective heat treatment process, while maintaining the cavity accuracy, finish and roughness, significantly improving the hardness and polishing performance of the mold and extending the service life of the mold.
Owner:RUNDELI METALWARE CO LTD
Pre-tensioning method prefabricated T beam
ActiveCN119434076Aevenly distributedImprove carrying capacityBridge materialsT-beamStructural engineering
The invention discloses a T beam prefabricated through a pre-tensioning method. The T beam prefabricated through the pre-tensioning method comprises a beam body. The beam body extends along a first direction; the first left prestress part and the first right prestress part are symmetrically arranged on the beam body in the first direction, a certain included angle is formed between the first left prestress part and the first direction, one end of the first left prestress part is fixed to the end, in the first direction, of the beam body, and the other end of the first left prestress part is fixed to the bottom of the beam body; the first left prestress part and the first right prestress part at least penetrate through the central cross section of the beam body in the first direction. According to the T beam prefabricated through the pre-tensioning method, the engineering cost is saved, the construction procedure is simplified, the production efficiency is improved, and the bearing capacity and prestress in the midspan of the beam body are improved.
Owner:ROAD & BRIDGE INT CO LTD
A micro-motion slit assembly for a monochromator and the monochromator
ActiveCN224286122UControl adjustment accuracyEnlarge or reduce adjustment accuracyRadiation pyrometrySpectrum generation using diffraction elementsBeam splitterImage resolution
This invention relates to the field of monochromator design technology, specifically providing a micro-motion slit assembly and monochromator for use in a monochromator. The slit plates of the micro-motion slit assembly are connected to a slit mounting plate and slidably connected to a slit base via a guide rail. A micrometer screw converts rotation into linear motion of a gap cone, and the gap cone adjusts the width of the slit between the two slit plates. The micrometer screw and gap cone enable large-range, high-precision adjustment of the slit width. This micro-motion slit assembly serves as both the output and input slit assemblies of the monochromator, and a vacuum transmission environment is provided by the housing. Spectral scanning or fixed-point wavelength output is achieved by rotating the beam splitter. This invention achieves continuous coverage of the entire 100-435nm wavelength band through vacuum design and improves the resolution adjustment accuracy of the monochromator's output light through the micro-motion slit design.
Owner:CHANGCHUN CHANGGUANG DANPU OPTOELECTRONICS TECHNOLOGY CO LTD