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137results about How to "Guarantee safe and reliable performance" patented technology
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Method for constructing Y shape pillar and suspended declined beam
A construction method for Y-shaped column and overhung great inclined beam features that the Y-shaped column and the overhung great inclined beam are segmented and each segment is constructed along with its connected floor slab, beam, column and other concrete structure by concreting at same time to integrate them as a whole to bear the axial pressure and horizontal push force generated by the dead weight of said great inclined beam. Its scaffold is the combination of multifunctional one and ordinary one.
Owner:中国建筑第八工程局中南公司
Lateral girder erection and construction method for truss double-girder type bridge girder erection machine
ActiveCN104878693AReduce duplicationReduce entry and exitBridge erection/assemblyButtressEngineering
The invention belongs to a precast girder mounting construction method, in particular to a lateral girder erection and construction method for a truss double-girder type bridge girder erection machine. A lateral girder erection structure of the truss double-girder type bridge girder erection machine comprises two transverse moving tracks, wherein the two transverse moving tracks are respectively arranged on the tops of bent caps at two ends of a to-be-erected hole; two ends of each transverse moving track are suspended out of the bent caps; outer suspended ends of each transverse moving track are supported on temporary buttresses; a high-position gantry crane structure is arranged on the tops of the two transverse moving tracks; and a transverse moving wheel box serves as a walking system of the high-position gantry crane structure. The construction method comprises the following steps of mounting the temporary buttresses; mounting and reinforcing the transverse moving tracks; mounting main longitudinal girders; and assembling, examining and receiving the bridge girder erection machine. The lateral girder erection method of the truss double-girder type bridge girder erection machine comprises the following steps of girder conveying, girder feeding, girder lifting, transverse moving, girder falling, temporary reinforcing and welding of crossbeams among girders. By the lateral girder erection and construction method for the truss double-girder type bridge girder erection machine, the construction cost is reduced effectively, and construction safety is ensured.
Owner:CHINA RAILWAY SIXTH GROUP
Numerical control machine tool motion control card based on WIFI communication
InactiveCN109062145AImprove real-time performanceGuaranteed real-timeNumerical controlSource Data VerificationData verification
The invention discloses a numerical control machine tool motion control card based on WIFI communication. The motion control card uses an ARM chip as a main controller and uses an FPGA chip as a hardware architectural structure of a coprocessor. A peripheral circuit of the ARM chip includes a reset circuit, a real-time clock circuit, an SDRAM, a FLASH storage module and various communication interfaces, needs to complete a communication task with a host computer, calculates motion codes and instructions transmitted by the host computer and finally process and form interpolation data and IO logic data to transmit to an FPGA for execution. According to the numerical control machine tool motion control card based on the WIFI communication, the advantages of a novel numerical control system mode are compared with that of a traditional numerical control system mode, the feasibility of using a WIFI wireless communication mode is analyzed from the perspective of real-time control and safety reliability, the wireless communication data frame format design and detailed semantic definition are achieved, and the data verification is based on reliable hardware CRC in order to improve the real-time communication.
Owner:大古智能科技(上海)有限公司
New energy power tracing method and system based on block chain
PendingCN112270550AEasy to sharePromote collaborationFinanceDatabase distribution/replicationNew energyUnique identifier
The invention discloses a new energy power tracing method and system based on a block chain, and the method comprises the steps of storing an electricity purchasing transaction contract, a new energyscheduling plan curve and a new energy power consumption order in the block chain, analyzing, obtaining the key field information format data, scheduling and correlating the curve hash data and the order information format data to generate a green electricity token with a unique identifier, storing the green electricity token on the block chain, and tracing by tracing a digital identifier. According to the invention, based on the mechanisms, such as a distributed account book of the block chain, data privacy security, data precision authentic right, etc., the information barriers of a transaction center, scheduling and power utilization sides are broken through, and data sharing and cooperation are promoted; the working efficiency is improved efficiently through a distributed data accountbook, the storage safety and transmission reliability of data are guaranteed through the non-tampering performance of the block chain, and the generation and distribution of large-scale green electricity tokens of a user side are effectively supported through a high-availability block chain bottom layer platform, and the transparency of a service execution process is ensured through the intelligent contract.
Owner:北京电链科技有限公司
System and method for monitoring and acquiring power distribution station environment
InactiveCN103941784AGuarantee safe and reliable performanceEnsure power supply reliabilityFire alarmsSimultaneous control of multiple variablesWater flowFire - disasters
The invention discloses a system for monitoring and acquiring the power distribution station environment. The system for monitoring and acquiring the power distribution station environment comprises a sensor, a monitoring, measuring and control device and a communication module, wherein the sensor is arranged in a power distribution station and used for acquiring power distribution station environment information in real time and uploading the power distribution station environment information; the monitoring, measuring and control device is connected with the output end of the sensor through a circuit and receives the power distribution station environment information acquired by the sensor; the communication module is in bidirectional connection with the monitoring, measuring and control device through a circuit and outputs the acquired power distribution station environment information outwards in a communicating mode. The system is provided with a temperature and humidity collector, a water sensor and a point-type smoke sensor, so that the temperature, the humidity, the condition whether water flows into the power distribution station or not and the condition whether a fire disaster occurs or not are detected by the temperature and humidity collector, the water sensor and the point-type smoke sensor respectively, if abnormality occurs, an alarm is given in real time, corresponding information is uploaded outwards, the power distribution station environment is monitored in all directions, and therefore power grid safety and power supply reliability are guaranteed.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Power supply device and power supply system
PendingCN107046144AImprove performance and longevityEnsure the stability, safety and reliability of power outputFinal product manufactureSecondary cells manufactureElectrical batteryElectric energy
The embodiment of the invention provides a power supply device and a power supply system, and relates to the technical field of battery thermal management. The power supply device comprises a liquid-cooling plate, heat dissipation plates and a battery module, wherein the liquid-cooling plate comprises a passage, the passage is used for a liquid to pass through and penetrates through a first side surface and a second side surface, which are opposite to each other, of the liquid-cooling plate, the heat dissipation plates are arranged on a third side surface of the liquid-cooling plate at equal intervals, the battery module comprises a plurality of single batteries, each single battery is arranged among the heat dissipation plates arranged at equal intervals, and heat of the single batteries is dissipated by the heat dissipation plates and the liquid-cooling plate. The power supply device and the power supply system can be used for rapidly dissipating heat of the battery module, so that the battery module works in a relatively excellent charge-discharge state, the service lifetime of the battery is further prolonged, the performance of the battery is further improved, and electric energy output stability, safety and reliability of the battery are ensured.
Owner:HUATING HEFEI POWER TECH
Energy supply system of stratosphere solar energy airship and control method thereof
InactiveCN107979157AEliminate performance differencesFlexible control on-offBatteries circuit arrangementsSingle network parallel feeding arrangementsStratosphereEnergy supply
The present invention discloses an energy supply system of a stratosphere solar energy airship and a control method thereof. The system comprises an energy monitoring unit and a solar generation unitand an energy storage unit which are connected with the energy monitoring unit. The solar generation unit is connected with a power supply bus in an airship through the energy storage unit, the energymonitoring unit comprises multiple generation paths, each generation path comprises one solar cell array, one MPPT module and one control switch module which are connected in order, and the energy monitoring unit controls output of each MPPT module and charge and discharge of the energy storage unit according to the power required by a load, and controls on-off of each control switch module according to the residual energy of the energy storage unit. The control method is configured to control the system mentioned above. The energy supply system of the stratosphere solar energy airship and the control method thereof are simple in structure, low in cost and high in energy supply efficiency and utilization rate, can meet the long-term continuous power supply demand of the stratosphere airship, and are stable and reliable, etc.
Owner:48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
Solid rocket engine elasticity weak constraint test rack
PendingCN112610364AStable dynamic characteristicsGuaranteed positioning accuracyRocket engine plantsSlide plateControl theory
The invention relates to a solid rocket engine test, in particular to a solid rocket engine elasticity weak constraint test rack. The solid rocket engine elasticity weak constraint test rack comprises ground guide rails, fixed frames, a movable frame, a test engine and adjusting devices, wherein the ground guide rails are fixed on a concrete base, and are connected through a bottom frame of the fixed frames so as to fix the bottom frame; support flat plates of the fixed frames are connected with a connecting bottom plate of the adjusting devices, a sliding plate bearing of the adjusting devices supports the test engine, and a limiting frame limits the test engine; and a connecting disc of the movable frame is connected with the test engine, and the test engine is tested through a sensor arranged in the device. Mutual interference between constraints is small, and the measurement accuracy is improved. Under the constraint effect, the rack has high inherent frequency, and it is guaranteed that the dynamic characteristic of the engine is stable in the working process.
Owner:内蒙航天动力机械测试所
Filtrating device and filtrating method for metal 3D (Three-dimensional) printer
PendingCN109248508AImprove efficiencyGuaranteed stabilityAdditive manufacturing apparatusDispersed particle filtrationMeasuring instrumentEngineering
The application discloses a filtrating device and a filtrating method for a metal 3D (Three-dimensional) printer. The device comprises the following components: an inert gas source (1), a filter (2),a metal 3D printer (3) and a vortex fan (4) which are communicated by adopting pipelines. The device also comprises a measuring instrument and a controller (5). According to the filtrating method, theinert gas source is taken as a protective medium in the processes of metal 3D printing and filtrating and de-dusting; an inerting agent is set in a filter to serve as a pre-coating, so that the riskof fire or even explosion during metal 3D printing and filtrating and de-dusting is reduced; in addition, the purified inert airflow can be directly returned to the metal 3D printer for recycling, andthereby high efficiency, stability, safety and reliability of the metal 3D printing process are ensured.
Owner:BEIJING CLEAN AIR TECH INNOVATION
Inner water circulation copper block forced cooling device for steel structure box-type column electroslag welding
InactiveCN104785979AAccelerate the lossShort residence time at high temperatureWelding/cutting auxillary devicesAuxillary welding devicesHeat-affected zoneRetention time
The invention provides an inner water circulation copper block forced cooling device for steel structure box-type column electroslag welding. The device comprises two water collection tanks, a water pump, a water valve, a water pressure gauge, a water pipe, a copper block and a U-shaped pipeline. The copper block is tightly attached to the outer surface of an electroslag welding member joint; two drainage channels are formed inside the copper block along the thickness direction; and a water inlet channel is formed close to the electroslag welding member side, and a water outlet channel is formed on the other side. The water inlet channel and the water outlet channel are communicated at one end of the copper block by virtue of the U-shaped pipeline; the water inlet channel at the other end of the copper block is connected with the water collection tank I; the water outlet channel is connected with the water collection tank II; inner water circulation of the copper block is realized under the action of the water pump, and forced cooling in the electroslag welding is realized. According to the device, a too wide heat affected zone, extremely long time Deltat 8 / 5 and high-temperature retention time generated by the electroslag welding joint can be avoided, so that the mechanical property, particularly breaking tenacity, of the electroslag welding joint is improved, the device can be used for improving the microstructure and mechanical property of the building steel structure box-type column electroslag welding joint, and the shock resistance of the structure is improved.
Owner:CHONGQING UNIV
Separable obstacle-crossing mechanical arm applied to overhead high-voltage transmission line
ActiveCN107086489AGuarantee safe and reliable performanceEnsure safety and stabilityApparatus for overhead lines/cablesElectric power systemLocking mechanism
The invention, which relates to the field of the power system maintenance and high-voltage line inspection robot technologies, is a separable obstacle-crossing mechanical arm applied to an overhead high-voltage transmission line. The separable obstacle-crossing mechanical arm comprises a cross locking mechanism, a gear pair wire holding mechanism, a slope adapting guide mechanism, a push rod brake mechanism and a gear rack mechanism. The cross locking mechanism is used for realizing locking and separation of a locked groove and a lock cylinder. The gear rack mechanism is used for realizing opening and closing of support arms at the two sides. The gear pair wire holding mechanism is used for keeping stability of the robot during a walking process. The push rod brake mechanism is used for realizing clamping and loosening of a walking wheel. The slope adapting guide mechanism is used for realizing adaptation to the slope and realizing an anti-overturning effect.
Owner:WUHAN UNIV OF TECH
Data backup method and device, server and storage medium
ActiveCN110209528AGuaranteed validityGuarantee safe and reliable performanceRedundant operation error correctionTemporal databaseDependability
The invention discloses a data backup method and device, a server and a storage medium, and belongs to the technical field of databases. According to the embodiment of the invention, on the basis of the temporal database, the backup method based on the temporal data is put forward to take multiple flexible modes for data in any state in the full-state data to achieve backup, such as a logic mode or a physical mode and a logic and physical combination mode, and effective storage, safety and reliability of the temporal data are effectively guaranteed.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Heat management device and power supply device
PendingCN106876825AExtended service lifeEasy to useSecondary cellsCell component detailsHeat managementLiquid circulation
The invention relates to the technical field of battery heat management, in particular to a heat management device and a power supply device. The heat management device is applied to the power supply device comprising a plurality of battery modules. The heat management device comprises a liquid inlet pipe, a liquid outlet pipe and a plurality of heat management assemblies with sealed cavities. The two adjacent heat management assemblies are connected; the liquid inlet pipe and the liquid outlet pipe are arranged at the heat management assembly; a roundabout liquid circulation passage is arranged in each sealed cavity; the liquid circulation passages are formed through separation by a plurality of water passage separation plates arranged in the sealed cavities; the liquid inlet pipe communicates with the liquid outlet pipe through the liquid circulation passages; liquid flows into the liquid circulation passage through the liquid inlet pipe, and then flows out through the liquid outlet pipe for performing heat management on each single battery in each battery module. Through the arrangement, each battery module in the power supply device works in a relatively good charging and discharging temperature state; the service life of the power supply device is prolonged; the performance of the power supply device is improved; the electric energy output stability and the safety reliability of the power supply device are ensured.
Owner:HUATING HEFEI POWER TECH
Multi-energy virtual power plant regulation capability calculation method considering quick start-stop equipment
ActiveCN112234607AGuarantee safe and reliable performanceGuaranteed economySingle network parallel feeding arrangementsInformation technology support systemElectricity systemIntegrated energy system
The invention provides a multi-energy virtual power plant regulation capability calculation method considering quick start-stop equipment and belongs to the technical field of operation control of comprehensive energy systems. The method comprises the following steps of firstly, establishing a multi-energy virtual power plant regulation capability calculation model composed of an objective function and constraint conditions, and converting the model into a matrix form; and solving the multi-energy virtual power plant regulation capability calculation model in the matrix form by using an improved nested column constraint generation algorithm to obtain a multi-energy virtual power plant regulation capability calculation result. The virtual power plant regulation capacity calculated by the method comprises the power reference value and the maximum upward and downward regulation capacities at each scheduling moment, the calculated power reference and regulation capacities ensure that the cost of the multi-energy virtual power plant is minimum, the method can ensure that the calculated regulation capacity is robust and feasible, and secondary scheduling of a power system is avoided. Themethod aims to calculate the regulation capability of the virtual power plant in the peak regulation auxiliary service market and improve flexibility of the power system.
Owner:STATE GRID JILIN ELECTRIC POWER COMPANY LIMITED +1
Battery bionic heat dissipation and heat recovery system and implementation method thereof
ActiveCN111129662AReduce volumeReduce weightBatteries circuit arrangementsSecondary cellsThermodynamicsHeat management
The invention discloses a battery bionic heat dissipation and heat recovery system. The system comprises a porous medium module containing a porous medium composite phase change material, ultra-thin gravity assisted heat pipe heat dissipation modules arranged in a honeycomb shape, a root-like heat transfer and collection module, a thermoelectric conversion module based on a Seebeck effect, a capillary-like micro-channel radiator and a charging energy storage module. According to the invention, the battery can be effectively ensured to be in an ideal working temperature range, the temperature uniformity of each single battery can be maintained, the heat dissipation loss can be reduced, the heat dissipation efficiency can be improved, and the safe and reliable performance can be ensured; thesize and the weight of the radiator can be effectively reduced; the purposes of reducing adverse effects of the heat dissipating capacity of the battery pack on other assemblies and recycling waste heat are achieved, a new way is developed for lithium battery heat management, creative attempts are made for combination of lithium battery heat management and thermoelectric conversion, and references are provided for the fields of lithium battery safety heat management and thermoelectric conversion research.
Owner:GUANGDONG UNIV OF TECH
Method for controlling intelligent control device for power distribution station environment
InactiveCN103941785AGuarantee safe and reliable performanceEnsure power supply reliabilitySimultaneous control of multiple variablesWater immersionFire - disasters
The invention discloses a method for controlling an intelligent control device for the power distribution station environment. The method comprises the steps that temperature and humidity information, the water immersion condition and the fire disaster condition in a power distribution station are detected in real time and uploaded to a master control module and a monitoring center; according to the temperature and humidity information, the monitoring center or the master control module sends control instructions, and an air conditioner and a fan in the power distribution station are controlled by an air conditioner controller and a fan controller so that the power distribution station environment can be adjusted; when water immersion or a fire disaster occurs, the monitoring center or the master control module gives an alarm. Through temperature and humidity collection, water immersion detection and fire disaster detection, the temperature, the humidity, the condition whether water flows into the power distribution station or not and the condition whether the fire disaster occurs or not can be detected respectively, if abnormality occurs, the alarm is given in real time, corresponding information is uploaded outwards, the power distribution station environment is monitored in all directions, and therefore power grid safety and power supply reliability are guaranteed.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Anti-misoperation interlocking device for low-voltage cabinet electric operation switch drawer unit
PendingCN112349529AImprove securityImprove reliabilitySwitchgear with withdrawable carriageElectric switchesElectromagnetic lockElectrical connection
The invention provides an anti-misoperation interlocking device for a low-voltage cabinet electric operation switch drawer unit and the low-voltage cabinet electric operation switch drawer unit. The anti-misoperation interlocking device comprises an interlocking mechanism and a locking circuit which are installed on the drawer unit. The locking circuit comprises an electromagnetic lock, an electric operating mechanism and a plastic shell switch with a closing auxiliary contact, the electromagnetic lock comprises a lock cylinder, the plastic shell switch is electrically connected with the electromagnetic lock and can supply power to or cut off power from the electromagnetic lock through opening and closing of the closing auxiliary contact, and therefore the lock cylinder of the electromagnetic lock stretches out or draws back. The electric operating mechanism is electrically connected with the plastic shell switch; the interlocking mechanism comprises a mechanical unlocking button, an unlocking push rod, an interlocking mechanism protection plate, a reset spring, a transmission gear, a gear rigid connection shaft, a drawer locking bolt and a limiting structure. By means of the interlocking mechanism and the locking circuit, misoperation interlocking of the low-voltage cabinet electric operating switch drawer is reliably prevented, the drawer is prevented from being pulled out orinserted when loaded, and personal safety and operation reliability are guaranteed.
Owner:CHINA IPPR INT ENG
Lithium battery protection system and lithium battery
ActiveCN112821497AMeet feature requirementsGuaranteed stabilityParameter calibration/settingElectric powerThermodynamicsVoltage regulation
The embodiment of the invention discloses a lithium battery protection system and a lithium battery, the lithium battery protection system comprises a filter circuit, a switch circuit, a temperature detection circuit and an overcurrent protection circuit, the overcurrent protection circuit comprises a current generation circuit, a voltage regulation circuit and a comparison circuit, the temperature detection circuit is used for detecting the temperature of the lithium battery and adjusting self resistance according to the detected temperature; the voltage regulation circuit is used for adjusting the voltage of the first input end of the comparison circuit according to the current output by the current generation circuit; and the comparison circuit is used for controlling the switch-on or switch-off of the switch circuit according to the magnitude relationship between the voltage of the first input end and the voltage of the second input end of the comparison circuit. According to the technical scheme provided by the embodiment of the invention, the over-current value of the protection system can be adjusted by detecting the temperature of the lithium battery, so that the over-current value changes along with the temperature change of the lithium battery, the characteristic requirements of the lithium battery at different temperatures are met, and the working stability, safety and reliability of the lithium battery are further ensured.
Owner:SUZHOU XYSEMI ELECTRONICS TECH CO LTD
Composite-material plate joint
InactiveCN104832507AApplicable connectionVersatileSheet joiningUltimate tensile strengthStructural safety
Disclosed in the invention is a composite-material plate joint comprising a composite-material plate, a metal wedge block, and connecting plates. Connecting holes are formed in corresponding parts of the end portion of the composite-material plate, the metal wedge block, and the connecting plate. A gap is processed in the edge of the composite-material plate; and the metal wedge block is wedged into the gap. One side, has the same gradient as the metal wedge block, of each connecting plate is buckled at each of the two sides of the composite-material plate; and the connecting plates and the composite-material plate wedged into the metal wedge block are fixedly connected by bolts and nuts. The composite-material plate joint has the following advantages: the joint can be applied to connection between the composite-material plates with different materials and different heights and between the composite-material plate and other metal components and has high universality, economy, and adaptability. Moreover, the process is simple; the implementation is flexible; the mounting and dismounting become convenient; and the tensile strength is high and the structure is safe and reliable.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Amphibious bicycle
InactiveCN101623990AEasy to operateControllable foldingAmphibious vehiclesAquaculture industryVehicle frame
The invention relates to an amphibious bicycle comprising a bicycle frame, a front fork, a seat saddle, a spigot, a front wheel, a rear wheel, a main chain wheel and a rudder arranged on the bicycle frame and behind the rear wheel, wherein an auxiliary chain wheel is arranged between the main chain wheel and the front wheel and is connected with the main chain wheel by a chain, and a detachable quick-remove foot crutch is arranged on the main chain wheel or the auxiliary chain wheel; a detachable front air chamber is respectively arranged on both sides of the front wheel, and a dismountable rear air chamber is respectively arranged on each of both sides of the rear wheel; and the rim of the rear wheel is provided with a dismountable horseshoe paddle board. The amphibious bicycle is not only applicable for transition and amphibious work in rivers, lakes, reservoirs and on nearby islands, and is a competent transportation tool for workers of culture fishery and water operation and fieldworkers.
Owner:邓淮斌 +1
Automatic adhesive tape bonding system and method
ActiveCN109958690AReduce mistakesImprove controllabilityMaterial gluingControllabilityTemporary storage
The invention provides an automatic adhesive tape bonding system and method. The automatic adhesive tape bonding system comprises a control device, a robot device used for grabbing parts to drive theparts to move, an adhesive tape temporary storage device used for temporarily storing and conveying adhesive tapes and an adhesive tape bonding device used for bonding the adhesive tapes to the parts,wherein the control device is used for storing and checking production information of vehicle door bonding, and controls the operating state of the robot device, the adhesive tape temporary storage device and the adhesive tape bonding device according to a checking result. According to the automatic adhesive tape bonding system, the robot device, the adhesive tape temporary storage device and theadhesive tape bonding device are controlled to operate through the control device, automatic bonding of the adhesive tapes on the parts to be bonded can be realized, fault of personnel can be reduced, the controllability in the production process and the production flexibility are increased, and thus, improvement of the production efficiency is facilitated.
Owner:精诚工科汽车系统有限公司
Passive power supply method and power supply system for vanadium cell emergency power supply
InactiveCN102664279AGuarantee stabilityGuarantee safe and reliable performanceFuel cells groupingRegenerative fuel cellsElectrical batteryStandby power
The invention relates to a passive power supply method and a power supply system for a vanadium cell emergency power supply. According to the passive power supply method and the power supply system for the vanadium cell emergency power supply, by the aid of the height position difference between a vanadium solution and an electric pile, the vanadium solution is enabled to flow into the electric pipe due to the gravity effect to achieve electricity generation. The passive power supply system for the vanadium cell emergency power supply comprises a vanadium solution supply end and the electric pile, wherein the vanadium solution supply end is located above the electric pile. According to the passive power supply method and the power supply system for the vanadium cell emergency power supply, the technical problems in prior art are effectively solved, any additional device is not required for assisting power supply, and only by means of the height position difference between the vanadium solution and the electric pile, the vanadium solution flows into the electric pile due to the gravity effect to achieve the electricity generation, so that other power consumption devices are driven to work, and the stability and the safe reliability of main and standby power source stations are effectively guaranteed.
Owner:深圳市金钒能源科技有限公司
Retracting and releasing limiting device for outer adjustment sheets of adjustable nozzle of aero-engine
PendingCN113530705AGuarantee safe and reliable performanceReliable Maximum Diameter Orifice StatusJet propulsion plantsStructural engineeringMechanical engineering
The invention discloses a retracting and releasing limiting device for outer adjustment sheets of an adjustable nozzle of an aero-engine. The device comprises a plurality of outer upper adjustment sheets circumferentially distributed and fixed on a supporting ring at intervals, wherein an outer lower adjustment sheet covers the space between every two adjacent outer upper adjustment sheets, the front end of the outer lower adjustment sheet is fixed on the supporting ring, and the outer lower adjustment sheet covers the gap between every two adjacent outer upper adjustment sheets; a partial surface of the outer upper adjustment sheet is arranged below the gap between the two adjacent outer lower adjustment sheets; the device further comprises a limiting component for expanding the outer upper adjustment sheets and the outer lower adjustment sheets in the radial maximum diameter state, and the limiting component can guarantee that the outer lower adjustment sheets cannot be disengaged from existing limiting gaps between the outer upper adjustment sheets in the expanding movement process of the adjustable nozzle from the minimum diameter state to the maximum diameter state. The outer lower adjustment sheets and the outer upper adjustment sheets always form a complete enveloping surface to obtain a reliable maximum-diameter nozzle state, so that the safe and reliable performance of the adjustable nozzle in the working process is ensured.
Owner:中国航发贵阳发动机设计研究所
Construction method of rear-embedded pile foundation
InactiveCN102817381APrevent collapseImprove carrying capacityFoundation repairBulkheads/pilesSocial benefitsEconomic benefits
The invention relates to a construction method of a rear-embedded pile foundation. By utilizing an original building foundation, an embedded pile foundation is added on the original building foundation, and the construction method comprises the following steps of: (1) digging a hole on the outer side of the original building foundation, and digging and embedding a pile hole according to design; (2) embedding the pile hole when digging at every 0.5-1.0 meter, and carrying out once retaining wall support by utilizing concrete; (3) hacking the bottom of the original building foundation, lowering a reinforcing steel bar, binding a reinforcing steel bar cage in the formed hole, and lowering a grouting pipe; (4) pressing the concrete into a base expanding pier by a concrete conveying pump and maintaining; and (5) after pouring the concrete for 40-60 hours, flushing the grouting pipe by water, and carrying out pressure grouting, wherein the ratio of water to ash of slurry is 1 to 0.4. According to the invention, through hole introduction at the outer side of the original building foundation to dig the hole, the concrete is poured to the formed hole to form the pile, the bearing capacity of the original building foundation is effectively improved, a space of the original building is fully utilized, and the construction method has good economic benefit and social benefit.
Owner:河北省建筑科学研究院有限公司
Ultrathin refined ceramic high-thermal-conductivity heating plate and manufacturing method thereof
InactiveCN102427615ASimplify processing stepsHigh capacity power densityOhmic-resistance heatingFar infraredNanotechnology
The invention relates to an ultrathin refined ceramic high-thermal-conductivity heating plate. The ultrathin refined ceramic high-thermal-conductivity heating plate comprises a plate-shaped heating core and protective layers arranged on two sides of the heating core respectively, wherein a heating component comprises a heating skeleton and a heating wire embedded into the heating skeleton; and the protective layers are far infrared radiation and high-temperature-resistant waterproof layers. The ultrathin refined ceramic high-thermal-conductivity heating plate has the advantages of high admissible power density, thinness, light weight, high heat-dissipating efficiency and the like. The invention also discloses a manufacturing method for the ultrathin refined ceramic high-thermal-conductivity heating plate.
Owner:北京桑普电器有限公司
Positioning system and method for automatic driving vehicle
ActiveCN112558087AAvoid frequent switchingGuaranteed driving comfortInternal combustion piston enginesNavigation by speed/acceleration measurementsRadarPositioning system
The invention discloses a positioning system and method for an automatic driving vehicle, belongs to the technical field of automatic driving of automobiles, and aims to provide a vehicle positioningresult by using an integrated navigation module in a place with a good GPS signal so as to ensure that the vehicle can normally run along a preset track. When the integrated navigation state is not good, a multi-angle coverage laser radar SLAM positioning algorithm is used for providing vehicle state information; when the method is used in a scene with poor integrated navigation and laser SLAM states, short-distance positioning is carried out through lane line information obtained through current data; three positioning schemes are adopted for safety redundancy, and vehicle positioning safetyand positioning reliability are fully guaranteed.
Owner:DONGFENG MOTOR CORP HUBEI
Pile driving mechanism for pile sinking at overwater contracted shallow water area
ActiveCN103437356AGuarantee safe and reliable performanceMeet pile sinking constructionBulkheads/pilesBlock and tackleShallow water area
The invention relates to a pile driving mechanism for pile sinking at an overwater contracted shallow water area. The pile driving mechanism comprises a hull and a pile frame, wherein the pile frame is hinged to the front end of the hull; the hull is provided with a steady derrick mast behind the pile frame; a first pulley block for reversely rotating the pile frame is connected between the top of the steady derrick mast and the pile frame; a second pulley block for forwardly rotating the pile frame is connected between the hull and the pile frame. According to the pile driving mechanism, the steady derrick mast is additionally arranged on the hull and the first pulley block and the second pulley block are matched for use as a lifting system, so that the forward and reverse rotation of the pile frame are driven, the safety reliability of a pile lifting system can be guaranteed, low-inclination pile sinking construction is met, inclined pile construction of various inclinations are conveniently adapted, the application range of a pile driving boat is expanded, the flexibility for use is improved, and the application range is not limited. The pile driving mechanism can be applied to pile driving construction of the contracted shallow water area.
Owner:CHINA RAILWAY GUANGZHOU ENG GRP CO LTD +1
Method for bonding and reinforcing of partition wall through dry method
ActiveCN107762008AConsistent and reliable bonding qualityInhibit the displacement and deformation of the partition wallWallsBuilding repairsFilling materialsWall plate
The invention discloses a method for bonding and reinforcing of a partition wall through a dry method. The method for bonding and reinforcing of the partition wall comprises the following steps that prefabricated wall plates, special-purpose binders and special-purpose bonding and reinforcing members are prepared; the multiple prefabricated wall plates are spliced into the partition wall one by one by using temporary jacking and fixing pieces such as soil wedges in advance; grouting holes for grouting of the special-purpose binders are formed along splicing seams of the partition wall at certain intervals; when the splicing seams of the partition wall are greater than 3 mm, the splicing seams are filled with the bonding and reinforcing members matched with the special-purpose binders for bonding and reinforcing at certain intervals; in the grouting mode, the special-purpose binders are grouted in the grouting holes of the splicing seams and the parts filled with the bonding and reinforcing members for bonding and reinforcing; after solidifying, the jacking and fixing pieces used for temporary jacking and fixing are taken out; and gaps which are not bonded and reinforced in all thesplicing seams of the partition wall and the interior of concave positions on the surfaces of the two sides of the splicing seams of the partition wall are filled with filling materials, the surface of the partition wall is filled in, and assembling, bonding and reinforcing of the partition wall are finished.
Owner:DONGGUAN CAILI BUILDING MAINTAIN TECH
Truss double-girder bridge erecting machine side feed beam erection structure, construction method of the erection structure, and side feed beam erection method based on the erection structure
Owner:CHINA RAILWAY SIXTH GRP CO LTD
Non-contact weighing and deviation warning device for belt conveyor
ActiveCN106989803ARealize real-time weighingLess componentsControl devices for conveyorsWeighing apparatus for continuous material flowFailure rateEngineering
The invention belongs to the technical field of transmission bands and particularly relates to a non-contact weighing and deviation warning device for a belt conveyor. The device comprises the following components: a sensing device used to obtain contour information data of a belt and a material on the belt in a direction vertical to the belt conveying direction, a data processing device used to obtain the cross section area of the material on the belt according to the contour information data, to obtain the mass of the material conveyed by the belt in the corresponding operation time with combination of the conveying speed and the operation time of the belt and the material density, to compare contours of the belt obtained in different periods, and to send an alarm signal when the difference between the contours of the belt obtained in different periods reaches a set value, and a synchronizer used to enable the sensing device to work with the belt at the same time. The non-contact weighing and deviation warning device is advantaged by few components and low cost, is not contacted with the belt in measurement, and is high in measurement precision and low in failure rate.
Owner:ANHUI UNIV OF SCI & TECH
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