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Optical lens
The invention provides an optical lens. The optical lens comprises a lens barrel, first to seventh lenses, a third spacing element and a fourth spacing element, wherein the first to seventh lenses, the third spacing element and the fourth spacing element are arranged in the lens barrel; the center thickness CT4 of the fourth lens on an optical axis, the air spacing T34 of the third lens and the fourth lens on the optical axis, and the maximum thickness CP4 of the fourth spacing element meet the following conditions: 1.07 < = (CP4 + CT4) / T34 < = 1.5; the combined focal length f45 of the fourth lens and the fifth lens and the spacing distance EP34 between the third spacing element and the fourth spacing element meet the condition that f45 / EP34 is larger than or equal to 18.82 and smaller than or equal to 24.58. According to the invention, the problem of stray light caused by the optical lens in the prior art in order to meet the assembly stability is solved.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD
Establishment method and system based on aircraft aerodynamic model database
ActiveCN119127839AImprove access speedFully meet the actual needsGeometric CADDesign optimisation/simulationFlight testData set
The invention relates to the technical field of database establishment, in particular to an establishment method and system based on an aircraft aerodynamic model database. The method comprises the following steps: obtaining an aircraft pneumatic data storage demand and an aircraft pneumatic data query demand, and carrying out multi-level storage architecture design to obtain a basic data layer, a processing data layer and a high-level model data layer; the method comprises the following steps: collecting aircraft original aerodynamic data sets of wind tunnel experiments, flight tests and CFD numerical simulation, and transmitting and storing the aircraft original aerodynamic data sets to a basic data layer; carrying out aerodynamic load, flow field parameter and aerodynamic pressure distribution analysis on the original aerodynamic data set of the aircraft in the basic data layer, and transmitting and storing the aerodynamic load, flow field parameter and aerodynamic pressure distribution to the processing data layer; and carrying out aircraft aerodynamic model construction on the data in the processing data layer, transmitting and storing the data to a high-level model data layer, and carrying out R-tree multi-dimensional index connection to obtain an aircraft aerodynamic model multi-level storage database. According to the invention, an efficient and intelligent aerodynamic model database can be established.
Owner:TANGSHAN KUNYI INNOVATION TECH CO LTD
Dry-type brain electrode and electroencephalogram cap
ActiveCN222565818UImprove stabilityGuaranteed structural strengthSensorsDiagnostic recording/measuringAcquisition apparatusScalp
The utility model relates to the technical field of electroencephalogram acquisition equipment, in particular to a dry type brain electrode and an electroencephalogram cap. The dry type brain electrode comprises an electrode needle and a base used for loading the electrode needle. The base is used for being installed on the wearable device. The base is provided with an assembling end face used for installing the electrode needle. And a conductive circuit is arranged in the base. The conductive circuit is connected with the electrode needle. And the plurality of electrode needles are circularly arranged on the assembly end face along the center line of the base to form a detection unit. The electrode needle comprises a connection section and a detection section which are connected in sequence. The connecting section is connected with the assembling end face of the base. The cross-sectional area of the detection section is smaller than that of the connection section. According to the dry type brain electrode, the multiple electrode needles are loaded on the base, the electrode needles penetrate through the hair of the head of the human body, the end of the detection section is made to make contact with the scalp surface, and therefore the function of collecting electroencephalogram signals is achieved, the reliability of contact between the detection section and the epidermis of the head is improved, and the stability of electroencephalogram signal collection is improved.
Owner:SHANGHAI SHULI INTELLIGENT TECH CO LTD
Distributed electric propulsion box type wing ground effect aircraft
PendingCN119389419AGuaranteed structural strengthImprove aerodynamic performanceFuselage framesAircraft controlSwept wingFlight vehicle
The invention discloses a distributed electric propulsion box type wing ground effect aircraft which comprises a main fuselage, the two sides of the main fuselage are connected with one ends of sweepback wing main wings, one ends of two empennages above the tail of the main fuselage are connected with the main fuselage through vertical tails, and the other ends of the two empennages are connected with the other ends of the two main wings through end plates respectively. The empennage is connected with a plurality of high ducted fans directly driven by a motor, an elevator and an aileron are arranged at the rear part of the empennage, a rudder is arranged at the rear part of the vertical fin, and the elevator, the aileron and the rudder are controlled by a flight control system and are mutually independent. The ground-effect aircraft provided by the invention adopts a box-type wing structure formed by combining the sweepback main wing and the sweepforward empennage, has better aerodynamic performance in a take-off and climbing low-speed flight state, and can provide larger lift force and better maneuvering characteristics.
Owner:CHINA SPECIAL TYPE FLIER RES INST
Tight coupling array antenna based on integrated microstrip balun
ActiveCN119297618Aincrease freedomplenty of spaceAntenna supports/mountingsAntenna earthingsAntenna impedanceFeeder line
A tight coupling array antenna based on an integrated microstrip balun is composed of a plurality of polarization units, each polarization unit comprises an antenna floor, a magnetic wave-absorbing material is arranged above the antenna floor, a supporting material is arranged above the magnetic wave-absorbing material, a radio frequency connector is arranged in the antenna floor, the radio frequency connector is connected with one end of a coaxial feeder line, and the other end of the coaxial feeder line is connected with the antenna floor. The other end of the coaxial feeder line sequentially passes through the antenna floor, the magnetic wave-absorbing material and the supporting material; a lower substrate is arranged above the supporting material; a feed balun is printed on the upper surface of the upper-layer substrate, and a multiplexing oscillator arm is printed on the lower surface of the upper-layer substrate; the multi-layer board technology is adopted, the antenna radiator, the coupling body and the feed balun are printed on different copper layers of the multi-layer board respectively, space optimization is achieved, antenna impedance matching is further optimized, and the antenna has the advantages of being excellent in performance and easy to install; according to the invention, the feed balun in the form of the multi-order microstrip transmission line is adopted to optimize all-order microstrip transmission line models, so that the compactness of the antenna unit is effectively improved.
Owner:XIDIAN UNIV
Crawler walking device suitable for seabed thin and soft substrate
InactiveCN119428894AWalking smoothlyIncreased load-bearing capacityAmphibious vehiclesMineral miningDrive wheelVehicle frame
The invention discloses a wide crawler walking device suitable for seabed thin and soft geology, which realizes stable walking of a deep-sea heavy-load mining operation platform on a thin and soft substrate through a high-tooth large-width composite material crawler walking mechanism, and provides a power driving guarantee for later operation of a heavy and heavy collection device. The crawler walking module is used for providing enough traction force for the mining vehicle, so that the mining vehicle can normally run on the complex bottom surface of the seabed. A crawler walking device is located in a chassis, the overall width of a vehicle body is reduced, a main beam of the chassis penetrates through trolley frames on the two sides, chassis secondary beams are welded to outer side panels of the trolley frames, the bearing capacity of the chassis is improved, the trolley frames are of a simple frame structure, and through holes and open grooves are machined in left and right outer side plates of the trolley frames and used for installing driving wheels, guide wheels and bearing wheels. Welding or bolt connection of other wheel train installation type structural parts is omitted, the lightweight design is met, and the structural strength is enhanced.
Owner:CHINA MERCHANTS DEEPSEA RES INST SANYA CO LTD +1
Battery cover plate assembly, battery shell and battery
ActiveCN222530580Ureduce weightminiaturizationSmall-sized cells cases/jacketsLarge-sized cells cases/jacketsElectrical batteryStructural engineering
The utility model discloses a battery cover plate assembly, a battery shell and a battery. The battery cover plate assembly comprises a cover plate body. The cover plate body is a metal piece, the cover plate body is provided with a thinned area and a non-thinned area, the thickness of the thinned area is smaller than that of the non-thinned area, the non-thinned area comprises a first non-thinned area, and the first non-thinned area surrounds the peripheral side of the thinned area and is suitable for being connected with a shell of the battery shell. According to the battery cover plate assembly disclosed by the embodiment of the utility model, the thinning area is arranged and the thickness of the thinning area is smaller than that of the non-thinning area, so that the overall weight of the cover plate body can be reduced, and the light weight of the battery cover plate assembly is facilitated; therefore, the capacity ratio of unit weight of the battery can be improved, and the loading capacity of the battery under the same weight can be improved; moreover, the first non-thinned area surrounds the peripheral side of the thinned area and is suitable for being connected with the shell of the battery shell, and the thickness of the first non-thinned area is relatively large, so that the connection strength of the cover plate body and the shell can be ensured.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
New energy mine truck side battery replacement battery frame
PendingCN119283603Ahigh densityReduce the temperatureCharging stationsElectric propulsion mountingPower exchangeElectrical battery
The invention relates to a new energy mine truck side battery replacement battery frame, which comprises: a frame body comprising an outer frame and at least one bracket, the outer frame is in a cuboid shape, the bracket is connected in the outer frame, and the bracket is horizontally arranged; the skin is arranged outside the outer frame in a wrapping mode and connected with the outer frame, and a ventilation assembly is arranged on the skin; the battery replacement connecting upper seat is arranged on the left side or the right side of the skin; the guide columns are arranged on the left side and the right side of the skin, and each guide column comprises a limiting rod, an adjusting pad, a limiting plate and two roller pins; one end of the limiting rod is connected with the skin, the middle of the limiting rod sinks downwards from the other end to form a horizontal plane, an adjusting pad is arranged on the upper portion of the horizontal plane, and a limiting plate is arranged on the upper portion of the adjusting pad; two semicircular clamping grooves parallel to the axis of the limiting rod are formed in the upper portion of the position, close to the skin, of the limiting plate, and the roller pins are arranged in the clamping grooves; and the limiting plate, the adjusting pad and the limiting rod are connected through bolts.
Owner:INNER MONGOLIA SHENGCHI ENGINEERING MACHINERY CO LTD
Tooth splicing type high-voltage and high-speed motor stator and design method
InactiveCN119628261Asmall torquereduce lossMagnetic circuit stationary partsManufacturing dynamo-electric machinesElectric machineMechanical engineering
The invention discloses a tooth splicing type high-voltage and high-speed motor stator and a design method, the tooth splicing type high-voltage and high-speed motor stator comprises a stator yoke and stator teeth, the stator teeth are uniformly distributed along the inner circumference of the stator yoke, and a stator slot for installing a winding is formed between adjacent stator teeth; the stator teeth are of an axisymmetric structure, the side edge of each stator tooth comprises a first contour molded line, a second contour molded line, a third contour molded line and a fourth contour molded line which are sequentially arranged in the radial direction of the stator, and the first contour molded lines of the adjacent stator teeth form winding installation areas. According to the invention, the stator teeth are designed to be detachable through the splicing structure, the line insertion of the formed winding can be smoothly carried out in the winding installation area formed by the first contour molded line, the groove width of the customized teeth can be ensured, and the stator teeth can be conveniently inserted in the winding installation area formed by the first contour molded line. The cogging torque is reduced, and the rotor eddy current loss of the motor is reduced.
Owner:NANJING CIGU TECH CORP LTD
Construction method of aluminum alloy formwork system for residential building
PendingCN119244000AReduce installation deviationImprove construction qualityForms/shuttering/falseworksAuxillary members of forms/shuttering/falseworksFloor slabConcrete beams
The invention discloses a construction method of an aluminum alloy formwork system for residential buildings. According to the construction method, the difficulty of assembly and disassembly construction and turnover use of aluminum alloy formworks can be reduced, and the construction quality and the construction efficiency of an assembly type structural system are improved. The construction method comprises the following steps: rechecking an axis and a wall line projected by a wall body according to a building design scheme, so that the axis and the wall line meet construction requirements; determining a wall body vertical reference line, and positioning a wall corner; a wall formwork system is installed, and perpendicularity is corrected; a beam formwork system is installed and corrected; a floor formwork system is installed and corrected; wall body concrete, beam body concrete, column concrete and floor slab concrete are poured, so that the wall body, the beam body, the column and the floor slab are connected into an integral structure; and the wall formwork system, the beam formwork system and the floor formwork system are dismantled, and the dismantled wall formwork system, the dismantled beam formwork system and the dismantled floor formwork system are conveyed to an upper-layer building for construction through a feeding opening.
Owner:CCCC FOURTH HARBOR ENG CO LTD
Humanoid robot leg structure
ActiveCN119459921ALow form factor requirementsimprove athletic abilityProgramme-controlled manipulatorJointsHumanoid robot naoPhysical medicine and rehabilitation
The invention relates to a humanoid robot leg structure which comprises thighs, knee joints, shanks, ankle joints and shanks. The thigh part comprises a first joint module motor and a second joint module motor; the knee joint comprises a first pull rod, a second pull rod and a connecting seat; the first joint module motor is connected with the connecting seat through the first pull rod; the shank part comprises a shank pull rod and a third joint module motor; the second joint module motor is connected with the foot through a second pull rod and a shank pull rod; the third joint module motor is connected with the foot through a shank pull rod; the foot part comprises a front support and a rear support which are connected through a foot support rotating shaft. Compared with the prior art, the humanoid robot has the advantages that the second joint module motor and the third joint module motor are located on the thigh portion and the shank portion respectively, symmetrical arrangement is not needed, module motors with larger size and torque can be arranged, and the motion ability of the humanoid robot is enhanced; the foot part comprises a front support and a rear support, and can adapt to different terrains.
Owner:SHANGHAI UNIV
Welding method for nickel-based alloy composite plate
ActiveCN119489243Afirmly connectedLow dilution rateArc welding apparatusAlloy compositeComposite plate
The invention discloses a welding method for a nickel-based alloy composite board. The nickel-based alloy composite board comprises a base material layer and a nickel-based alloy composite material layer, and a transition layer is arranged at the bonding interface of the base material layer and the nickel-based alloy composite material layer. Wherein a trapezoidal groove is machined in the position, corresponding to the base material layer, of the welding section of the nickel-based alloy composite board; a U-shaped groove is machined in the position, corresponding to the transition layer, of the welding section of the nickel base alloy; a groove is not machined in the position, corresponding to the nickel-based alloy composite material layer, of the welding section of the nickel-based alloy composite plate; a nickel-based alloy welding wire matched with the nickel-based alloy composite material layer is used, single argon tungsten-arc welding is adopted for welding the nickel-based alloy composite material layer, and a composite material layer welding seam is formed; a nickel-based alloy welding wire matched with the nickel-based alloy composite material layer is used, the transition layer is welded through single argon tungsten-arc welding, and a transition layer welding seam is formed; and the base material layer is welded to form a base material layer welding seam, and double-tungsten-electrode argon arc welding is adopted for welding the first welding bead of the base material layer.
Owner:BAOSHAN IRON & STEEL CO LTD
Battery
ActiveCN222282134UImprove safety performanceprevent disengagementCell component detailsElectrical batteryStructural engineering
Owner:CALB GROUP CO LTD
Strong friction bionic surface suitable for smooth and rough surfaces and preparation method
The invention discloses a strong friction bionic surface suitable for smooth and rough surfaces and a preparation method, the strong friction bionic surface comprises a rigidity-variable epoxy shape memory polymer, the rigidity-variable epoxy shape memory polymer is structurally divided into three layers, namely a backing layer, an inclined micro-cylinder array and a smaller-size secondary micro-cylinder array from bottom to top, the backing layer is conveniently fixed on a heating substrate and transfers heat, and the inclined micro-cylinder array is low in rubber-state cylinder modulus in a normal contact stage, so that the inclined micro-cylinder array can be in conformal contact with a dual surface better; before sliding friction, the cylinder is switched to be in a glassy state, the modulus is high, deformation is small, the anti-shearing effect can be effectively improved, and damage caused by large deformation is not likely to happen; the second-stage micro-column array has low contact rigidity when being in contact with a smooth surface or a rough surface, can be well adapted to planes with different sizes of roughness, and is embedded with rough peaks to increase the contact area.
Owner:SOUTHWEST JIAOTONG UNIV
Preparation method of long-acting interface lubricating coating
ActiveCN119463591AGood anti-icing effectImprove wear resistancePolyurea/polyurethane coatingsDiluentFirming agent
The invention discloses a preparation method of a long-acting interface lubricating coating, which comprises the following steps: (1) adding 5-7 parts by mass of nano sol, 4-6 parts by mass of micron porous powder, 1.0-1.2 parts by mass of low surface energy substance and 4-6 parts by mass of ammonia water into 80-120 parts by mass of ethanol, and stirring under a water bath heating condition to obtain a modified micron particle suspension, the suspension liquid is dried into powder at high temperature, and modified porous powder is obtained; (2) fully mixing 0.8-1.2 parts by mass of the modified porous powder and 3-5 parts by mass of silicone oil, putting the mixture into a vacuum pump to vacuumize so that the silicone oil can enter the modified porous powder, and after the vacuum state is removed, separating redundant silicone oil to obtain porous powder containing silicone oil; (3) carrying out hole sealing treatment on the porous powder containing the silicone oil, drying at a high temperature, and then mixing with the silicone oil to obtain a mixed solution of the hole sealing powder and the silicone oil; and (4) firstly adding 2.5-4 parts by mass of resin into 2-5 parts by mass of a diluent, then adding 0.5-0.6 part by mass of a silane coupling agent, then adding 0.5-0.8 part by mass of the mixed solution obtained in the step (3), finally adding 0.75-1.2 parts by mass of a curing agent, uniformly mixing, brushing or spraying onto a substrate, and airing to obtain the interface lubricating coating.
Owner:SOUTHEAST UNIV
Air-land amphibious pesticide spraying unmanned aerial vehicle
InactiveCN119190438Aeasy to replaceImprove efficiencyAircraft componentsAircraft convertible vehiclesBrushless motorsControl system
The air-land amphibious pesticide spraying unmanned aerial vehicle comprises a vehicle body, the vehicle body comprises a vehicle head, a vehicle body and a vehicle tail from one end to the other end, and a pesticide box and an energy bag are detachably connected to the vehicle body; the fuselage connecting rods are rotationally connected to the two sides, close to the fuselage head and the fuselage tail, of the fuselage correspondingly. The multiple walking wheel mechanisms are installed at the ends, away from the machine body, of the machine body connecting rods in a one-to-one correspondence mode. The propeller assembly comprises a brushless motor and propeller blades, the brushless motor is fixed to the center of the walking wheel, and the propeller blades are fixedly connected with the output end of the brushless motor. The pesticide spraying tables are arranged on the two sides of the machine body and rotationally connected with spraying heads, and the spraying heads are connected with a pesticide box pipeline. The control system is in electric signal connection with the energy pack, the connecting rod motor, the servo motor, the brushless motor and the water pump, a flight control module for controlling the unmanned aerial vehicle to fly and an operation control module for executing pesticide spraying operation are arranged in the control system, and the unmanned aerial vehicle is efficient in operation, diversified in function and capable of adapting to operation in the environments such as hills and mountains.
Owner:CHONGQING UNIV OF ARTS & SCI
Foundation pit supporting system
InactiveCN119465992AImprove stabilityGuaranteed structural strengthExcavationsBulkheads/pilesSupporting systemBraced frame
The invention provides a foundation pit supporting system, and belongs to the technical field of constructional engineering. According to the structure, an inner supporting frame is located in an outer supporting frame, a rectangular steel column of a bridging frame is located between the outer supporting frame and the inner supporting frame, the two Y-shaped ends of the bridging frame abut against the inner wall of the outer supporting frame and the outer wall of the inner supporting frame respectively, and a connecting disc of the bridging frame abuts against the inner wall of the inner supporting frame; the reinforcing anchor rods extend into the external contact structure, and a plurality of vertical supporting columns are arranged on the outer wall of the outer supporting frame. A frame structure with an inner layer and an outer layer is constructed, on the basis, a whole is formed through the bridging frames, and the reinforcing anchor rods are installed; the reinforcing anchor rod is wedged into the soil layer of the foundation pit and is fixed with the soil layer by using the anchor bolt with the wing plate and the aileron, so that the stability is fully enhanced; meanwhile, the vertical supporting columns are arranged on the outer side of the outer supporting frame, and the structural strength is guaranteed. The supporting structure has better structural strength and is stable and reliable when used for supporting the foundation pit.
Owner:BINZHOU HUITAI CONSTRUCTION & INSTALLATION ENGINEERING CO LTD
Ducted fan structure
PendingCN119142516AImprove aerodynamic efficiencyreduce noiseRotocraftElectric machineMotor vibration
The invention discloses a ducted fan structure and aims to provide a ducted fan structure beneficial to noise reduction, the ducted fan structure comprises a motor base and an annular outer cover, the motor base is located in the outer cover and located in the center of the bottom of the outer cover, a motor and a plurality of guide vanes are arranged on the motor base, one end of the motor is detachably connected with the motor base, and the other end of the motor is detachably connected with the guide vanes. The other end of the motor is an output end and is provided with a fan, the fan is located in the top of the outer cover and detachably connected with the output end of the motor, the multiple guide blades are evenly distributed in the circumferential direction of the motor base, the motor base is detachably connected with the inner side wall of the outer cover through the guide blades, the outer cover is provided with multiple hanging lugs, and the hanging lugs are fixedly connected with the outer side wall of the outer cover. The plurality of hanging lugs form a rectangular force unloading area corresponding to the motor, the left-right width of the force unloading area is larger than the diameter of the motor, and the up-down height of the force unloading area is larger than the height of the motor. The beneficial effects of the invention are that the motor vibration is reduced, and the purpose of reducing noise is achieved.
Owner:ZHEJIANG CHANGKONG POWER TECH CO LTD
Light-weight aluminum support provided with water tank and used for fixing intermediate transmission shaft assembly of four-wheel drive vehicle
ActiveCN222451950UExtended service lifeavoid deformationControl devicesDrive shaftAgricultural engineering
The utility model relates to a light-weight aluminum support with a water tank for a fixed intermediate transmission shaft assembly of a four-wheel drive vehicle, and belongs to the technical field of automobile transmission shafts. Comprising a middle transmission shaft assembly, a middle supporting metal plate support, an aluminum support and a water tank structure, the middle transmission shaft assembly is connected with the middle supporting metal plate support, the water tank structure is arranged at the bottom of the aluminum support, the middle supporting metal plate support is installed above the water tank structure of the aluminum support, and a plurality of through holes are formed in the water tank structure. The intermediate transmission shaft assembly structure is used for filtering sand and soil generated in the running process of a vehicle, so that deformation of the device caused by silt blockage and accumulation is avoided, and the service life of the intermediate transmission shaft assembly structure is prolonged.
Owner:CHERY AUTOMOBILE CO LTD
BIM (Building Information Modeling)-based curtain wall mounting structure and mounting method
PendingCN119593532AGuaranteed structural strengthimprove aestheticsWallsBuilding material handlingArchitectural engineeringCurtain wall
The invention discloses a BIM-based curtain wall mounting structure, and relates to the technical field of curtain wall construction, the BIM-based curtain wall mounting structure comprises a keel frame, a plurality of curtain wall frames, curtain wall plates and aluminum plates, the keel frame is fixedly arranged on a steel net rack, the curtain wall frames are fixedly arranged on the keel frame, placing grooves for placing the curtain wall plates are formed in the curtain wall frames, and the aluminum plates are arranged in the placing grooves. The adjacent curtain wall frames are arranged in a spaced mode, connecting rods are arranged on the keel frame and installed between the adjacent curtain wall frames, the aluminum plates are installed between the adjacent curtain wall frames, locking bolts used for fixing the aluminum plates are arranged on the connecting rods, and installation holes allowing the locking bolts to penetrate through are formed in the aluminum plates. And the aluminum plate is provided with a pressing part for pressing the curtain wall plate. The curtain wall has the advantages that connection between the curtain wall plate and the curtain wall frame can be effectively prevented from loosening, and therefore the overall attractiveness, safety and sealing performance of the curtain wall are improved.
Owner:新疆宏远建设集团有限公司
Straight-up and straight-down quick clamping device of upper die for bending machine
ActiveCN222268436UEfficient use ofLarge operating spaceShaping toolsStructural engineeringIndustrial engineering
The utility model discloses an upper die straight-up and straight-down rapid clamping device for a bending machine, which comprises an upper die body and an upper die holder, and further comprises a driving piece, a clamping piece and a clamping piece, the movable plate is installed on the front side of the upper die base and fixedly connected with the movable end of the driving piece, an obliquely-downward T-shaped hole is formed in the side, back to the upper die base, of the movable plate, and a limiting pin is installed in the T-shaped hole; the pressing and clamping piece is connected with the limiting pin and located between the movable plate and the upper die base, the side, close to the upper die base, of the pressing and clamping piece is provided with a concave pressing and clamping area, the top of the pressing and clamping area is provided with a restraining body, and the pressing and clamping area is used for pressing the upper die body on the upper die base and restraining the upper die body from falling off in the non-pressing state. The device can complete straight-up and straight-down quick assembly and disassembly, and is compact in structure, small in size, low in cost and easy to maintain, disassemble and assemble.
Owner:ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL & PATTERNS MFG
Full-size wind tunnel high-load blade
PendingCN119616921Areduce intensityRealize anti-shedding effectPump componentsWind energy generationFiberCarbon fibers
The invention discloses a full-size wind tunnel high-load blade, which relates to the technical field of wind tunnel equipment and comprises a metal blade root, a hollow main beam and a blade body, a main beam connecting section is arranged at one end of the metal blade root, and the side wall of the main beam connecting section is a first conical side wall surface; the large opening end of the first conical side wall face is closer to the end, provided with the main beam connecting section, of the metal blade root than the small opening end of the first conical side wall face. The hollow main beam is formed by wrapping a carbon fiber cloth layer; a blade root connecting section is arranged at one end of the hollow main beam and fixedly arranged on the main beam connecting section in a sleeving mode. The inner side wall of the blade root connecting section is a second conical side wall face, and the second conical side wall face is attached to the first conical side wall face. The blade body is made of a carbon fiber material; and the blade body is fixedly arranged on the hollow main beam. The lightweight design degree of the blade is improved, and the lightweight effect of the blade structure is achieved.
Owner:AVIC HUIYANG AVIATION PROPELLER
Ribbed composite skirt structure and preparation method thereof
PendingCN119288698AGuaranteed structural strengthGuaranteed structural rigidityRocket engine plantsCombustion chamberUltimate tensile strength
The invention provides a reinforced composite skirt structure and a preparation method, and relates to the technical field of rocket engines, the reinforced composite skirt structure comprises a skirt body, the skirt body is composed of a skirt flange and a skirt side wall, and the skirt side wall is integrally connected to the outer edge of the skirt flange and extends towards the back face of the skirt flange; the plurality of reinforced blocks are arranged on the back surface of the skirt flange; skirt through holes are formed in the skirt flanges and the reinforced blocks in a penetrating mode, and threaded sleeves are fixedly arranged in the skirt through holes. The skirt body and the reinforced blocks are made of carbon fiber composite materials. Compared with a skirt structure of a traditional rocket engine combustion chamber shell, the skirt structure has the advantages that a metal corner box in the prior art is replaced with the stiffened blocks and the threaded sleeves, the skirt body, the stiffened blocks and the threaded sleeves are integrally made of the carbon fiber composite materials and are fixed through glue joint, the procedure of threaded connection is omitted, and the forming difficulty is greatly reduced. The stiffened blocks can ensure the structural strength and rigidity of the skirt body structure, and the weight of a formed product can be reduced by 15% compared with that of a traditional skirt body.
Owner:WEIHAI GUANGSHENG AEROSPACE TECH CO LTD
Hydrogen conveying flexible pipeline and hydrogen leakage detection method
PendingCN119617201AThe hydrogen leakage coefficient is reducedImproved hydrogen barrier performanceCorrosion preventionPipeline systemsMetallic aluminumNew energy
The invention relates to a hydrogen transport flexible pipeline and a hydrogen leakage detection method, the hydrogen transport flexible pipeline comprises a lining layer, an airtight layer, a fiber reinforced layer and an outer protective layer, the lining layer, the airtight layer, the fiber reinforced layer and the outer protective layer are all cylinder structures, the lining layer is made of a non-metal thermoplastic resin material, and the outer protective layer is made of a non-metal thermoplastic resin material. The airtight layer is composed of a graphene / aluminum oxide hydrogen-resistant coating and a metal aluminum layer, the fiber-reinforced layer is made of a non-metal high-strength fiber composite material, the outer protective layer is made of a non-metal thermoplastic resin material, and the fiber-reinforced layer comprises a fiber-reinforced inner layer and a fiber-reinforced outer layer; an airtight layer is wound on the outer side of the lining layer, a fiber reinforced inner layer is wound on the outer side of the airtight layer in the forward direction, a fiber reinforced outer layer is wound on the outer side of the fiber reinforced inner layer in the reverse direction, and an outer protection layer is arranged on the outer side of the fiber reinforced outer layer; a monitoring element is arranged in the outer protection layer and used for monitoring the hydrogen concentration change or the resistance change of the outer protection layer in real time, and the hydrogen protection device can be widely applied to the technical field of new energy development.
Owner:CNOOC GAS & POWER GRP
High-temperature-resistant ceramifiable glass fiber reinforced plastic pipeline and preparation method thereof
PendingCN119613917AGuaranteed structural strengthavoid secondary damageCoatingsTubular articlesEthylene diamineGlass fiber
The invention discloses a high-temperature-resistant ceramifiable glass fiber reinforced plastic pipeline and a preparation method thereof. The pipeline is prepared from a component A and a component B, wherein the component A is prepared from 20-35 parts of phenolic resin, 15-30 parts of bisphenol A epoxy vinyl resin, 15-30 parts of low-temperature glass powder, 1-5 parts of flame retardant, 10-20 parts of fire-resistant filler and 5-10 parts of fluxing agent; the component B is prepared from 50 to 75 parts of glass fiber, 10 to 15 parts of ethidene diamine and 5 to 15 parts of solvent. The specific preparation process of the pipeline comprises the following steps: respectively pre-mixing the component A and the component B in a stirrer, then adding the mixed component A and the mixed component B into vacuum stirring equipment, carrying out closed vacuumizing, slowly stirring, and finally, carrying out centrifugal casting, curing, demolding and cutting to obtain the pipeline. The manufactured glass fiber reinforced plastic pipeline is smooth in inner wall, few in pores and small in internal fluid flow resistance, resin and glass fibers are firmly combined, and a firm ceramic heat insulation layer can be rapidly formed on the surface layer of the pipeline in a fire disaster environment to prevent high temperature from permeating inwards, so that the structural strength of the glass fiber reinforced plastic pipeline is kept, and the fire safety is improved.
Owner:JIANGSU KEHUI ENVIRONMENTAL TECH CO LTD
Integrated front cabin manufacturing method, integrated front cabin structure and lower vehicle body assembly with integrated front cabin structure
PendingCN119501025Aeasy to integratereduce weightSuperstructure subunitsDie castingMechanical engineering
The invention discloses an integrated front cabin manufacturing method, an integrated front cabin structure and a lower vehicle body assembly with the integrated front cabin structure. The integrated front cabin manufacturing method comprises the steps that pouring liquid is poured into a front cabin mold, and vacuumizing operation is conducted on the tops of shock absorption tower molds on the left side and the right side of the front cabin mold, the left side and the right side of the rear portion and the middle portion of the front cabin mold and a feeding pipe of the pouring liquid; and pouring liquid overflowing from the top of the damping tower mold is guided out to a cinder ladle. The front cabin manufactured through integrated die casting is only provided with one part and has high integration, good lightweight performance, good front cabin size precision and excellent collision performance, the vehicle body rigidity and torsional rigidity of the white vehicle body are effectively improved, manufacturing is convenient, and the forming performance is excellent.
Owner:DONGFENG MOTOR GRP +1
Combined fixing device and method for marine LNG fuel C-shaped storage tank
PendingCN119239842AImprove installation stabilityImprove installation speedVessel partsFor bulk goodsEpoxyStructural engineering
The invention discloses a combined fixing device of a marine LNG fuel C-shaped storage tank, belongs to the technical field of ship manufacturing, and solves the problem that an existing marine LNG fuel C-shaped storage tank is easy to loosen. The anti-explosion ship comprises a combined storage tank, an anti-explosion box and a plurality of ship body bases, the anti-explosion box is arranged at one end of the combined storage tank in a sleeving mode, and the anti-explosion box and the combined storage tank are fixed in a welded and sealed mode; a plurality of supporting legs are arranged at the bottom of the combined storage tank and are in lap joint with a plurality of ship body bases in a one-to-one correspondence mode, and each supporting leg is fixedly connected with the corresponding ship body base through a bolt and nut assembly. A glass fiber reinforced plastic layer and an epoxy resin layer are sequentially arranged between each supporting leg and the ship body base from top to bottom. According to the combined fixing device, the mounting stability of the C-shaped LNG fuel storage tank for the ship can be improved. The invention further discloses a combined fixing method of the marine LNG fuel C-shaped storage tank. According to the method, rapid, accurate and stable installation can be achieved.
Owner:GUANGXI GUIJIANG SHIPYARD
Self-adhesive waterproof roll hot-pressing device
The utility model is suitable for the technical field of waterproof coiled material hot pressing, and provides a self-adhesion waterproof coiled material hot pressing device which comprises a base. The first fixing frame and the second fixing frame are arranged at the top of the base, and the first fixing frame is located on one side of the second fixing frame; the first stepping motor and the second stepping motor are both arranged on the outer side wall of the first fixing frame and the outer side wall of the second fixing frame, and the first stepping motor is located above the second stepping motor; the conveying rollers are arranged at the output ends of the first stepping motor and the second stepping motor; the coiled material hot-pressing assembly is arranged at the top of the base; the self-adhesive waterproof coiled material in the hot-pressing process is limited through the hot-pressing base, vertical dislocation of the coiled material in the conveying and hot-pressing processes is avoided, the quality of the self-adhesive waterproof coiled material after hot-pressing is guaranteed, the structural strength of adhesion is also guaranteed, the self-adhesive waterproof coiled material is conveyed in a stepping mode and then is subjected to hot-pressing, the effect after hot-pressing can be guaranteed, and the service life of the self-adhesive waterproof coiled material is prolonged. And hot pressing is more sufficient.
Owner:GUANGDONG HONGYANG WATERPROOF TECH CO LTD
Tower crane pile foundation arrangement structure
ActiveCN222632315UReasonable structureGuaranteed structural strengthFoundation engineeringArchitectural engineeringStructural engineering
The utility model discloses a tower crane pile foundation arrangement structure which comprises a pile cylinder, a pair of first supporting pieces are arranged above the pile cylinder, the first supporting pieces are arranged in parallel at intervals, and a standard frame of a tower crane is fixed above the first supporting pieces; the device further comprises a second supporting piece, and the second supporting piece is arranged above the first supporting piece. A pair of connecting pieces is arranged between the first supporting pieces, and the connecting pieces are arranged in a crossed and spaced mode. The tower crane pile foundation arrangement structure is reasonable in structure and convenient and fast to operate, and the structural strength of the tower crane pile foundation is effectively guaranteed through the supporting pieces and the connecting combination; in addition, the tower crane pile foundation is formed through assembly and has the advantage of being flexible in operation; in addition, most parts of the tower crane pile foundation can be recycled for multiple times, and the construction cost can be controlled easily.
Owner:CHINA CONSTR FIRST DIV GROUP CONSTR & DEV
Battery cell and battery pack
ActiveCN119674420Asmooth exhaustimprove securityCell lids/coversElectrical batteryMechanical engineering
The invention relates to the technical field of batteries, in particular to a battery cell and a battery pack. According to the battery cell, a first cover plate is provided with an exhaust hole and is provided with a convex part protruding towards the interior of the battery cell; the pressure relief piece is mounted in the exhaust hole; the supporting piece is mounted on the convex part, so that the supporting piece and the first cover plate are arranged at an interval, and the projection of the supporting piece on the first cover plate covers the exhaust hole; a first ventilation area is formed on the supporting piece, and gas can flow to the exhaust hole through the first ventilation area; the sizes of the pressure relief piece and the first ventilation area in the first direction are L1 and L2 respectively; the sizes of the pressure relief piece and the first ventilation area in the second direction are W1 and W2 respectively; 1.15 < = L2 / L1 < = 1.3; and 1.15 < = W2 / W1 < = 1.3. According to the invention, even if the interior of the battery cell of the pole group is displaced, the supporting piece can also prevent the pole group from moving towards the direction close to the exhaust hole, so that the condition that the pole group shields or even completely blocks the exhaust hole is avoided.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD