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High-strength ultraviolet / moisture dual-curing PUR hot melt adhesive as well as preparation method and use method thereof
PendingCN121991623AIncrease crosslink densityImprove toughnessPolyureas/polyurethane adhesivesPolymer scienceUltraviolet
The invention discloses a high-strength ultraviolet / moisture dual-curing PUR (Polyurethane) hot melt adhesive as well as a preparation method and a use method thereof. The adhesive is prepared from the following raw materials in parts by weight: 60 to 75 parts of isocyanate-terminated polyurethane prepolymer, 10 to 20 parts of polyurethane acrylate, 10 to 30 parts of reactive diluent, 1 to 5 parts of photoinitiator, 0.1 to 0.5 part of filler, 0.5 to 2 parts of silane coupling agent and 5 to 20 parts of tackifying resin. Wherein the isocyanate-terminated polyurethane prepolymer is obtained through a reaction of dihydric alcohol and isocyanate, the polyurethane acrylate is obtained through a reaction of the isocyanate-terminated polyurethane prepolymer and an acrylate monomer, and the adhesive disclosed by the invention has the dual advantages of rapid positioning in ultraviolet curing and high strength and durability in moisture curing; the adhesive has the advantages of high adhesive strength, good process adaptability, ultrahigh bonding strength, excellent heat resistance and aging resistance, and is especially suitable for assembly line rapid bonding and assembly of precise parts such as electronic components and optical elements.
Owner:NANTONG GAOMENG NEW MATERIAL
Method for constructing regulatory network of potato ja pathway response to cd stress
ActiveCN121565316BOvercome the modal aliasing problemAchieve high-precision separationNeural learning methodsChemical machine learningPlant hormoneNetwork model
The application provides a method for constructing a regulation network of a potato JA pathway in response to Cd stress. The method relates to the technical field of data processing, and comprises the following steps: obtaining multi-omics time series data of potatoes under the conditions of cadmium stress and methyl jasmonate treatment; performing signal decomposition and feature purification on the multi-omics time series data by using a weak stationary signal decomposition method based on sequence patterns to obtain a plurality of intrinsic mode components; constructing a dynamic regulation network model to capture multi-scale change patterns of response characteristics in the time dimension and the concentration dimension, thereby extracting deep features; inputting the intrinsic mode components into the trained dynamic regulation network model to output an attention weight matrix, thereby forming a regulation network representing the dynamic regulation intensity of the jasmonic acid pathway; and solving the optimal exogenous methyl jasmonate concentration for promoting biomass and inhibiting cadmium accumulation by optimizing an objective function. The application provides a high-precision model tool for analyzing the regulation mechanism of plant hormone signals under heavy metal stress.
Owner:GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
900MPa-grade Sn-Sb composite acid and chloride ion corrosion resistant steel plate as well as manufacturing method and application thereof
PendingCN119571191AMeet lightweight requirementsachieve strengthLarge containersHeat treatment process controlWeather resistanceChloride
The invention discloses a 900MPa-grade Sn-Sb composite acid and chloride ion corrosion resistant steel plate and a manufacturing method and application thereof.Through single Ti strengthening, the yield strength is larger than or equal to 800MPa, the tensile strength is larger than or equal to 900MPa, A is larger than or equal to 18%, the weather resistance index I is larger than 6.0, the steel plate is subjected to a periodic infiltration corrosion test according to a TB / T 2375-93 Railway Weathering Steel Periodic Infiltration Corrosion Test Method, the test time is 72 h, and the tensile strength is larger than or equal to 900MPa. And compared with common weathering resistant steel SPA-H, the corrosion rate is less than 85%, and the weathering resistant steel has better atmospheric corrosion resistance. Meanwhile, Sn-Sb composite addition is adopted, and the corrosion weight loss rate of the steel plate is smaller than 5.50 g / m < 2 >. H according to a test method specified by JB / T 7901 under the conditions that the temperature is 70 DEG C and a corrosion solution is 50% H2SO4 + 3 * 10 < 4 > mg / L Cl <->.
Owner:МААНЬШАНЬ АЙРОН ЭНД СТИЛ КО ЛТД
A motorcycle engine crankcase
The utility model discloses a motorcycle engine crankcase belongs to motorcycle engine technical field, and one kind of motorcycle engine crankcase, including crankcase main part, the crankcase main part upper end surface center one side place is equipped with crankshaft accommodating cavity, the crankcase main part upper end surface center leans to the side and is equipped with the variable speed gear installation cavity, the inboard wall of crankshaft accommodating cavity is equipped with the protection structure, the crankcase main part lower end surface center place is equipped with the reinforcing structure, in addition, the utility model discloses, through the combination design of protective layer, T type sliding block and sliding slot, through the radial limit and prevent the deviation and fall of protective layer because of crankshaft high -frequency vibration, also keep the axial trace sliding space to adapt the thermal expansion and contraction when the engine works, solved the problem that rigid protection structure is easy to produce stress cracking because of temperature change, simultaneously, the direct contact of protective layer and crankshaft part realizes wear and tear isolation, and cooperates slidable type assembly structure, and the durability and adaptability of protection have been greatly improved.
Owner:GUANGDONG RUIZHEN TECH CO LTD
Method for manufacturing high-purity rare earth weathering bridge steel
The application discloses a kind of high-purity rare earth weathering bridge steel manufacturing method, comprising the following steps: S1, preparing raw materials;S2, impurity analysis and preparation;S3, vacuum induction furnace initial refining N;S4, vacuum induction furnace first material and refining;S5, vacuum induction furnace second material and charging adjustment;S6, vacuum induction furnace temperature adjustment and Ce;S7, cooling to form alloy ingot.The application uses vacuum electromagnetic induction melting process, improves alloy purity through high-purity raw materials and reasonable preparation process and process parameter control, and adds rare earth elements, and then significantly improves the strength, tensile and weathering performance of bridge steel.
Owner:ZHEJIANG METALLURGICAL RES INST
Magnesium-lithium alloy cabin structure member and forming method thereof
This invention discloses a magnesium-lithium alloy cabin structure component and its forming method, belonging to the field of magnesium-lithium alloy forming technology. The method includes the following steps: S1. Pre-treatment of the magnesium-lithium alloy ingot, followed by free forging or extrusion to obtain a billet; S2. Die forging the billet and air-cooling it to room temperature to obtain a forging; S3. Holding the forging at 270~290℃ for 4~6 hours, then quenching it in cold water and performing T5 heat treatment; finally, aging strengthening by holding it at 180~220℃ for 8~12 hours. The forming method of this invention improves product uniformity through pre-treatment and enhances product strength and toughness through heat treatment. This forming method has broad application prospects and is expected to be industrialized.
Owner:CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
Knee joint movement rehabilitation training device
ActiveCN222426573Uachieve strengthChiropractic devicesPhysical medicine and rehabilitationElectric machinery
The utility model discloses a knee joint movement rehabilitation training device, and particularly relates to the technical field of knee joint movement training, which comprises a bottom plate, a backrest fixed on one side of the top of the bottom plate, a rear support plate fixed on one side of the bottom of the bottom plate, a front support plate fixed on the other side of the bottom of the bottom plate, and two connecting plates fixed between the front support plate and the rear support plate, and two sliding rods are arranged between the two connecting plates. The motor drives the lead screw to rotate, the lead screw drives the connecting rod to move, the connecting rod drives the two sliding rods to move, the sliding rods drive the rectangular blocks to slide in the rectangular grooves, the sliding rods can drive the sliding blocks to slide in the sliding grooves, and meanwhile the rotating plate can drive the rotating blocks to rotate. The legs of the patient can rotate along with the rotating plate, so that the function of performing activity training on the knee joints of the patient is realized, and meanwhile, the strength of the activity training of the knee joints can be adjusted by adjusting the rotating speed and the rotating time of the motor.
Owner:TIANHUA COLLEGE OF SHANGHAI NORMAL UNIV
A high-wear-resistance extrusion-resistant hydraulic oil pipe strength testing device
ActiveCN120253496Bachieve strengthRealize the effect of extrusion testing
The application belongs to the technical field of hydraulic oil pipe strength testing, and relates to a high-wear-resistance and extrusion-resistant hydraulic oil pipe strength testing device, which comprises a base frame, a connecting frame, door plates, a connecting mechanism, a liquid injection mechanism and an extrusion testing mechanism. The connecting frame is connected to the top of the base frame. The door plates are rotatably connected to the two sides of the connecting frame. The connecting mechanism and the extrusion testing mechanism are arranged on the connecting frame. The liquid injection mechanism is arranged on the base frame. The liquid injection mechanism can inject liquid into the hydraulic oil pipe. The extrusion testing mechanism is used for extruding the hydraulic oil pipe. When the strength of the hydraulic oil pipe is tested, the device can inject water with a certain pressure into the hydraulic oil pipe, so as to test the pressure inside the oil pipe. When the testing is performed, the extrusion column can apply pressure from the outside to the inside of the oil pipe, so as to simulate the impact generated outside in the testing process. The device can simultaneously realize the effects of strength testing and extrusion testing of the hydraulic oil pipe, and the testing effect is better.
Owner:TAICANG LIANHUI HYDRAULIC PRESSURE EQUIP CO LTD
Single-exposure compressive ultrafast coherent modulation imaging device
The application discloses a single-exposure compressed ultrafast coherent modulation imaging device. By combining coherent modulation imaging and compressed ultrafast imaging technology, a sample to be measured is illuminated by coherent light, after the sample diffracts the light wave, the phase modulation of a random phase modulation plate is carried out, the integral intensity distribution of the modulated wave front is recorded by deflection on a detection plane by using a slit fully opened stripe camera, a single compressed diffraction pattern is obtained, a spatial two-dimensional to space-time three-dimensional image reconstruction algorithm based on a plug-and-play framework and a depth image priori is developed, and data recovery is carried out on the collected image by using the algorithm. Compared with traditional ultrafast optical imaging and phase imaging technology, the application can quantitatively obtain complete intensity and phase information of a transient scene in a single measurement process, has the characteristics of picosecond time resolution and real-time quantitative intensity-phase imaging capacity in single-exposure phase imaging, and can be widely applied to various ultrafast phenomena requiring phase observation.
Owner:EAST CHINA NORMAL UNIV
Trolley for moving door-shaped pier of movable formwork
ActiveCN222513119Uachieve regulationachieve stiffnessBridge erection/assemblyArchitectural engineeringSlide plate
According to the movable door type pier trolley for the movable formwork, in the mold opening state before the movable formwork moves longitudinally, when fine adjustment needs to be conducted on the left-right direction of a main beam, a trolley driving device drives the trolley to move left and right relative to a base, and the trolley slides relative to the base through a sliding device, so that adjustment of the left-right position of the main beam is achieved. When the movable formwork moves longitudinally, the main beam slides relative to the sliding plate, the structure that the trolley slides on the base is adopted, the vertical layered design in the height direction is achieved, and enough clearance is provided for the foundation meeting the rigidity and strength of the main beam under the condition that the special space of the pier of the door-shaped pier structure is limited.
Owner:SHANDONG SHIDAI STRESS ENG TECH CO LTD
Rotatable light emitting diode
ActiveCN222377893Uaccurate angleachieve strengthLight fasteningsSemiconductor devices for light sourcesEngineeringLight-emitting diode
The utility model discloses a rotatable light emitting diode, which comprises a first sleeve plate, a second sleeve plate, a diode body, a rotation adjusting assembly, a positioning assembly and mounting sleeves, rotating shafts are arranged at two ends of the diode body, bearings are sleeved on the rotating shafts, two mounting sleeves are respectively sleeved on the two bearings, and the rotating shafts are completely sleeved by the mounting sleeves. A first sleeve plate and a second sleeve plate are respectively sleeved on the two mounting sleeves, a positioning assembly is arranged in the mounting sleeve sleeved by the first sleeve plate, a rotary adjusting assembly is arranged in the mounting sleeve sleeved by the second sleeve plate, and a plurality of groups of light emitting diode arrays are arranged on the periphery of the side wall of the diode body. According to the utility model, through the positioning assembly on the first sleeve plate and the rotation adjusting assembly on the second sleeve plate, the diode body can be accurately rotated to reach an accurate angle, so that the light-emitting diodes in the corresponding rectangular grooves emit light, and desired irradiation light color and intensity are realized.
Owner:SHENZHEN NEW SPECTRUM LIGHTING CO LTD
A tensioning end mechanism for a linear cross-belt sorting machine
ActiveCN111661570Bresolve resistanceachieve strengthConveyorsPlastic recyclingLogistics managementDrive shaft
The present invention relates to the technical field of equipment in the logistics industry, and specifically to a tensioning end mechanism of a linear cross-belt sorting machine, comprising a driven shaft and a driven disk installed on the driven shaft for being driven by the driving chain, and also comprising a driven frame, wherein the driven frame comprises an inner frame and an outer frame, wherein the inner frame comprises a left inner plate and a right inner plate which are relatively arranged on the left and right sides of the driven disk, and the parts of the driven shaft located on the left and right sides of the driven disk are respectively installed on the left inner plate and the right inner plate, and the outer frame comprises a left outer frame and a right outer frame which are respectively arranged on the left side of the left inner plate and the right side of the right inner plate, and front and rear adjustable tensioning devices are arranged between the left inner plate and the left outer frame and between the right inner plate and the right outer frame, so that the adjustment is more convenient and reliable.
Owner:ZHEJIANG DAMON TECH CO LTD
一种蜂窝芯复合碳纤维板
Owner:SHENZHEN XINXINGCHENG CARBON FIBER TECH CO LTD
Roller hearth type heating furnace
The utility model provides a roller hearth type heating furnace, and belongs to the technical field of heating furnaces. The roller hearth type heating furnace comprises a box body, a transmission roller, a supporting plate, a connecting cylinder, a connecting shaft, a first bearing, a supporting seat and a limiting screw, the connecting shaft is sleeved with the first bearing, and the first bearing is placed in the supporting groove of the supporting seat, so that the supporting seat supports the connecting shaft, the connecting cylinder and the transmission roller through the first bearing, and the transmission stability of the transmission roller is improved. The supporting base, the first bearing and the connecting shaft are all located on the outer side of the box body, compared with the mode that the first bearing is embedded into the box body, the situation that the first bearing is damaged due to the fact that the first bearing is heated too high can be avoided through the heat insulation assembly arranged in the box body, and therefore the product quality is improved.
Owner:CHONGQING RELIAN INTELLIGENT TECHNOLOGY CO LTD
Environment-friendly systematic furniture capable of improving space utilization rate and construction performance and construction method of environment-friendly systematic furniture
PendingCN122004595AImprove space utilizationImprove constructabilityServing tablesFeetWorking environmentWorkspace
The space utilization rate, the constructability and the environmental protection property of existing furniture can be improved at the same time. In particular, a cooling system based on Peltier elements may be mounted within the top plate to maintain comfort of the user's workspace and to cool the desktop surface without separate cooling equipment. By installing the Peltier element and the coolant chamber in the top plate, the temperature of the surface of the top plate can be reduced. In this way, the table top can be kept dry, extra cooling is not needed, and a user can work in a more comfortable working environment. By integrating the cooling device into the top plate member and the head member, the efficiency of the power supply device can be improved, and the cooling function can be integrally provided without installing additional equipment. This improves the ease of installation and maintenance. By using the skin-core-skin carbon fiber composite material, the weight and the strength of the office table can be realized at the same time, and the office table has excellent heat conductivity and excellent cooling and heat diffusion effects.
Owner:西斯株式会社
High-activity and high-strength bio-based composite membrane and preparation method thereof
The invention belongs to the technical field of composite membrane manufacturing, and discloses a high-activity and high-strength bio-based composite membrane and a preparation method thereof. The invention discloses a high-activity and high-strength bio-based composite film. Raw materials of the high-activity and high-strength bio-based composite film comprise bio-based macromolecules with good film-forming property, plant polyphenols with a plurality of phenolic hydroxyl groups, a reinforcing modifier, an interface compatibilizer and a plasticizer which are mixed according to the weight ratio of 100: (2-10): (0.5-1.0): (0.5-5): (10-30), wherein the enhanced modifier comprises at least one of bio-based aldehyde and multivalent metal ions. According to the invention, biomass is taken as a main raw material, and a functional component is introduced to construct a multi-multipoint cross-linked network, so that the strength improvement and functionalization of the bio-based composite film are realized, the application potential of the bio-based composite film in the fields of food packaging, biological medicine and the like is expanded, and good economic benefits are achieved.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Environment-friendly paperboard service cycle detection device
ActiveCN224216446UQuick cutting and dividingImplement bursting strength testPreparing sample for investigationMaterial strength using tensile/compressive forcesPaperboardStructural engineering
The utility model relates to the technical field of paperboard detection, and discloses an environment-friendly paperboard use cycle detection device which comprises a workbench, a support is arranged on the workbench, a pressurizing assembly is arranged on the support and comprises an upper die plate capable of moving up and down along the Z axis, an adjustable lower die is arranged on the lower side of the upper die plate on the workbench, and the adjustable lower die is arranged on the lower side of the upper die plate. The adjustable lower die comprises two lower die plates capable of moving oppositely or oppositely, and the two lower die plates are attached to form a male die with the center protruding. Through cooperative use of the pressurizing assembly, the adjustable lower die, the sample cutting assembly and the control panel, the two lower die plates are utilized to form the separable lower die, a convex die with the center protruding is formed by separating clamping and die assembly which can be used for carrying out edge pressure testing on a paperboard, bursting strength testing and edge pressure strength testing can be achieved, and the production efficiency is improved. The paperboard sample can be rapidly cut and separated through the movable cutting knife, other tools are used, and the effects of being convenient to use and diverse in function are achieved.
Owner:ZHEJIANG JINYIJIA PACKAGING CO LTD
Steel ladder surface tiling structure
ActiveCN222525728UReduce hardening shrinkageEasy to installTreadsTread-and-riser unitsBrickCement mortar
The utility model discloses a steel ladder surface tiling structure which comprises a steel ladder, reinforcing ribs, a galvanized steel wire mesh, positioning ribs, connecting ribs and anti-skid bricks, the positioning ribs and the connecting ribs are fixedly arranged on the stepping plane of the steel ladder, the positioning ribs are arranged close to the internal corner and the external corner of the steel ladder, and the connecting ribs are arranged between the front positioning rib and the rear positioning rib; the galvanized steel wire meshes are laid on the stepping plane and the stepping vertical face of the steel stair and connected with the positioning ribs and the connecting ribs, the reinforcing ribs are installed on the portions, on the outer sides of the galvanized steel wire meshes, of the stepping vertical face and connected with the galvanized steel wire meshes, the cement mortar base layers are poured on the stepping plane and the stepping vertical face, and the anti-skid bricks are pasted on the cement mortar base layers. The positioning ribs, the connecting ribs, the reinforcing ribs and the galvanized steel wire gauze are installed in the cement mortar base layer, hardening shrinkage of cement mortar can be reduced, integrity and strength of the base layer are achieved, the hard and flat base layer is provided for tiling, the construction method is simple, and the integrity of the base layer is good.
Owner:BEIJING CONSTRUCTION ENGINEERING GROUP CO LTD
Multi-angle rotary milling head
This utility model relates to the field of milling machine processing technology and discloses a multi-angle rotating milling head, including a spindle connected to the milling machine to realize the milling work of the milling head. The spindle includes a columnar support cylinder with multiple positioning grooves evenly formed circumferentially inside the support cylinder. The support cylinder is integrally formed from high-strength aluminum alloy material with a tensile strength of not less than 500MPa and a yield strength of not less than 450MPa. A reinforcing mechanism is detachably assembled inside the spindle. The reinforcing mechanism includes a central connecting column, and multiple curved panels are embedded and fixedly arranged circumferentially on the outer surface of the connecting column. The multiple curved panels are distributed at a 120° angle to each other. This utility model uses high-quality materials and a reasonable structure, resulting in high strength, light weight, stable multi-angle operation, convenient disassembly and maintenance, reduced costs, and improved component recycling rate and equipment service life.
Owner:SHAANXI AVIATION VOCATIONAL & TECH COLLEGE
A gutter cover handling device
The utility model discloses a kind of water ditch cover plate handling devices, it is related to water ditch cover plate handling appliance technical field, including circular tube, hinged seat being installed in the middle part of the lower end of circular tube and the frame for supporting device, frame is welded by multiple steel pipes, the upper end of frame is equipped with bearing seat, the upper end of bearing seat is fixed with the lower end of hinged seat, the inside of one side of circular tube is slidably equipped with extension pipe, the sidewall of the lower end of extension pipe is provided with guide slot, both ends of guide slot are equipped with limit plate, the inside of two limit plates is slidably equipped with adjusting assembly, the lower end of the other side of circular tube is equipped with lifting hook, the lower end of lifting hook is equipped with clamping assembly;The utility model is cooperated by upper arm and lower arm, clamp, realizes reliable clamping function;Length adjusting function is realized by the cooperation of extension pipe and circular tube, adjusting assembly;Convenient movement and stable operation function are realized by the cooperation of frame and moving wheel, fixed chain.
Owner:YUWU COAL CO LTD OF SHANXI LUAN GRP
T-shaped sealing structure with spanwise variable stiffness connection and optimization method
ActiveCN119429083Aavoid damageReduced risk of breakageFuselagesGround installationsClassical mechanicsStrength design
The invention belongs to the technical field of airplane wing strength design, and particularly relates to a spanwise variable stiffness connection T-shaped sealing structure and an optimization method, the spanwise variable stiffness connection T-shaped sealing structure comprises a sealing structure, a connection corner box and a support structure; the supporting structure comprises a plurality of supporting partition plates distributed in the spanwise direction and wall plates fixedly installed above the supporting partition plates, honeycomb sandwich cores are arranged at the positions, between the adjacent supporting partition plates, of the wall plates, and the rear edges of the wall plates are fixedly connected with a plurality of connecting corner boxes in the spanwise direction. The sealing structure comprises a sealing plate and a vertical rib, the sealing plate is divided into a front fixed section and a rear cantilever section, and the vertical rib is located between the fixed section and the cantilever section; the fixing section is fixedly connected with the upper surface of the connecting angle box and the supporting partition plate, the vertical rib is fixedly connected with the vertical face of the rear end of the connecting angle box, the T-shaped sealing structure and the wall plate form an integral structure, the relative deformation is reduced, the strain level of the sealing structure is effectively reduced, and the service life of the sealing structure is prolonged.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Rim drop hammer impact testing machine
The utility model relates to the field of tire detection devices, and discloses a rim drop hammer impact testing machine which comprises a long plate, a motor is fixedly connected to the right side of the long plate, a base is fixedly connected to the lower end of the long plate, a metal plate is fixedly connected to the right end of the upper portion of the base, and a rotating rod is rotationally connected to the top end of the metal plate. The right side of the rotating rod is rotatably connected with a placing plate, the lower end of the placing plate is fixedly connected with a second adjusting rod, the right side of the second adjusting rod is fixedly connected with a supporting rod, the end, away from the second adjusting rod, of the supporting rod is slidably connected with a first adjusting rod, and the lower portion of the first adjusting rod is fixedly connected with a sliding block; and the middle side in the sliding block is in threaded connection with a threaded rod. According to the utility model, through mutual cooperation of the metal rod, the thin shell, the spring, the small baffle plate, the shifting piece rod, the handle, the clamping groove and the telescopic rod structure, the phenomenon that the height of the magnetic block cannot be adjusted during a rim drop hammer impact test is realized.
Owner:TAISHAN SPORTS IND GRP CO LTD +2
Method for preparing fine-grain TC32 titanium alloy rod material with high impact toughness
The application provides a preparation method of TC32 titanium alloy fine-grain rod material with high impact toughness, and relates to the technical field of metal material hot working, and comprises the following steps: step one, selecting a TC32 titanium alloy ingot; step two, high-temperature beta zone cogging forging; step three, alpha+beta two-phase zone intermediate forging; step four, multi-pass radial forging; and step five, double annealing heat treatment. The application provides the preparation method of the TC32 titanium alloy fine-grain rod material with high impact toughness, and through the whole-process collaborative control of "high-temperature beta zone cogging, two-phase zone forging, multi-pass radial forging, furnace heat supplement, and controlled slow cooling double annealing", primary alpha phase fine-grain (2-5 microns) and secondary alpha phase homogenization are realized; while the tensile strength is ensured to be not lower than 950 MPa, the impact toughness is stably improved to be higher than 90 J / cm2, and the highest impact toughness is 110 J / cm2, which is greatly improved compared to the prior art with the impact toughness of 80 J / cm2; the method takes into account high strength and excellent impact resistance, and has uniform structure and controllable process.
Owner:BAOJI YONGSHENGTAI TITANIUM IND
Vibration device for enhancing the strength and plasticity of laser additive manufacturing alloys using multilayer piezoelectric ceramics
PendingCN122077014Ahigh strengthImprove plasticityAdditive manufacturing apparatusIncreasing energy efficiencyAlloyActuator
This invention discloses a multilayer piezoelectric ceramic vibration device for improving the strength and plasticity of alloys manufactured by laser additive manufacturing. Belonging to the field of electrical ceramic materials technology, it includes a vibration platform, a function amplifier, a power amplifier, and a multilayer piezoelectric ceramic actuator adapted to the vibration platform. The vibration platform supports a metal substrate and transmits the vibration of the multilayer piezoelectric ceramic actuator to the molten pool during the laser additive manufacturing process. Through the high-frequency stable vibration output by the multilayer piezoelectric ceramic actuator, a strong acoustic flow effect and mechanical disturbance effect are formed in the molten pool region. On the one hand, this accelerates the escape of gas from the molten pool, completely eliminating porosity defects such as pores and shrinkage, solving the problems of incomplete fusion and uneven interface bonding in traditional laser additive manufacturing. On the other hand, it breaks up the coarse dendrites growing in the molten pool, increases the nucleation core, and achieves significant refinement of grains and the second phase structure, ultimately achieving a synergistic improvement in alloy strength and plasticity.
Owner:GUIZHOU WANHE PRECISION ELECTRONICS CO LTD
Steel structure building connecting piece for building
ActiveCN222435546UAchieve positioningavoid misalignmentBuilding constructionsClassical mechanicsWeight machine
The utility model relates to the technical field of steel structures, and discloses a steel structure building connecting piece for buildings, which comprises a first steel beam and a second steel beam, one side of the first steel beam is attached to the end face of the second steel beam, the bottom of a limiting plate is fixedly connected with the upper end of the second steel beam, and the side face of the limiting plate abuts against the side face of a plate body. The top of the plate body is fixedly connected with a block body, the upper portion of the block body is rotationally connected with a straight rod through a pin shaft, and one end of the straight rod is fixedly connected with an arc-shaped plate movably connected with the arc-shaped groove in the top of the limiting plate. Through the cooperation of the plate body, the straight rod and the spring, the second steel beam is positioned, the situation that in the bolt welding or connecting process, the second steel beam deviates to generate gaps or bolt holes are staggered is avoided, and the problems that in the connecting process of an existing connecting piece, deviation is prone to occurring due to the fact that only a weightlifting machine is used, and the connecting quality is poor are solved. And the subsequent welding work is further influenced.
Owner:SHENYANG ZHONGCHEN STEEL STRUCTURE ENG
A slope protection structure for waterway slopes
Owner:YANGTZE RIVER YICHANG WATERWAY ENG BUREAU
High-stress soft rock stratum anchor rod supporting device
The utility model relates to the technical field of anchor rod supporting equipment, in particular to a high-stress soft rock stratum anchor rod supporting device. According to the technical scheme, the fixing device comprises an outer fixing part and an inner fixing part, wherein the inner fixing part is sleeved with the outer fixing part; the outer fixing part comprises an outer sleeve rod, the bottom of the outer sleeve rod is rotationally connected with a plurality of auxiliary supporting rods, and the top of the outer sleeve rod is further fixedly connected with a rotating disc; the inner fixing part comprises an inner rod rotationally connected with the inner wall of the outer sleeve rod in a threaded mode, the outer ring of the bottom end of the inner rod is fixedly connected with a fixing clamping ring in a sleeving mode, a plurality of fixing blocks are connected to the lower portion of the fixing clamping ring in an array mode along the outer ring of the fixing clamping ring, and a fixing rod is arranged between every two adjacent fixing blocks; the outer ring of the top end of the outer sleeve rod is sleeved and connected with an anchoring connecting disc. Anchoring force is improved, initial anchoring force is provided through reverse wedge block mechanical meshing, the stability of the anchor rod is enhanced in all directions, the anchor rod adapts to high-stress soft rock stratums, engineering safety is guaranteed, and maintenance cost is reduced.
Owner:GUIZHOU ZHENGLI MINING CO LTD
Organic waste gas treatment device and system based on multi-stage coordination
The application discloses a kind of organic waste gas treatment device and system based on multistage coordination, it is related to waste gas treatment technical field, including condensation compensation module, for collecting the real-time temperature and heat tracing power output value of the inner wall of heat tracing pipeline each position point, in combination with preset boiling point threshold value, condensation distribution data are extracted;The concentration value of high-boiling component in waste gas is collected, in combination with condensation distribution data and waste gas residence time value;The application is based on temperature difference and power difference calculation condensation risk coefficient and is aggregated as risk area, realizes the space position positioning of condensate accumulation area and condensation intensity quantification, solves the problem that condensation risk identification in prior art relies on single temperature threshold value, cannot locate condensate accumulation area spatial distribution, provides spatial reference for subsequent microbial metabolism risk accurate identification of carbon source supply.
Owner:ZHEJIANG YAOLAN ENVIRONMENTAL PROTECTION EQUIP CO LTD
A method, medium, and system for establishing a grid-based hazardous chemicals knowledge base
ActiveCN120633795BImplement automated hierarchical analysisachieve strengthCheminformatics data warehousingCheminformatics programming languagesChemical riskQuality data
This invention provides a method, medium, and system for establishing a gridded hazardous chemicals knowledge base, belonging to the technical field of knowledge base establishment methods. First, data is collected and high-quality data is filtered through a recognition index. Then, an accuracy evaluation model is constructed to automatically label various types of knowledge and form a knowledge association matrix to quantify the association strength. Next, a gridded knowledge mapping structure is established, knowledge grid units are divided, and grid centrality is calculated to determine the weight of knowledge points. Subsequently, a minimum spanning tree is automatically constructed to handle knowledge conflicts, and a matrix completion algorithm is applied to handle defective knowledge. Then, a chemical risk association network is constructed, and a hazardous chemicals grid index is calculated to quantify the hazard level. Next, a knowledge reasoning mechanism is designed, and a grid knowledge compression function is used to handle excessively long knowledge. Finally, an adaptive optimization algorithm is implemented to dynamically adjust the grid structure, forming a gridded hazardous chemicals knowledge base that reduces manual dependence and enhances the expression of associations.
Owner:INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Functional gradient polishing pad and preparation method and application thereof
PendingCN121756228Aachieve strengthRealize material propertiesGrinding devicesLapping toolsPolishingUltimate tensile strength
The invention provides a functional gradient polishing pad. The functional gradient polishing pad is characterized by comprising a polishing layer and a supporting layer which are integrally formed and have no gap; the polishing layer has a discrete gradient decreasing modulus from the support surface to the contact surface, or the polishing layer has a discrete or continuous gradient decreasing modulus from the center to the edge; the modulus range of the supporting face or the center is 250-680 Mpa, and the modulus range of the contact face or the edge is 50-450 Mpa. The invention further relates to a preparation method of the functionally gradient polishing pad, and functionally gradient distribution is achieved through the additive manufacturing thinking similar to 3D printing and the combination of the pouring position of the polishing layer and materials with different strength proportions. The functional gradient polishing pad provided by the invention can solve the problems of surface defects such as scratches, residues and the like or saucer-shaped recesses, dielectric layer erosion and the like caused by consistent removal rates in the whole polishing space.
Owner:HUBEI DINGHUI MICROELECTRONICS MATERIALS CO LTD +2