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Structure capable of controlling large-volume water gate crack and construction method thereof
ActiveCN119640749Areduce maximum stresscrack controlBarrages/weirsHydro energy generationArchitectural engineeringRebar
The invention provides a structure capable of controlling a large-volume water gate crack and a construction method thereof, and belongs to the technical field of water gates. The structure comprises a gate bottom plate and a gate pier which are formed by pouring concrete, and the gate pier is arranged above the gate bottom plate; hole cavities are at least formed in the gate piers and reserved in the concrete pouring process. The hole cavity is used as a self-constrained stress hole; and the tough material is used for absorbing stress, is filled in the pore cavity and is connected with the inner wall of the pore cavity. The method comprises the steps of S1, construction preparation; s2, foundation treatment; s3, gate bottom plate construction; s4, gate pier construction: S41, construction lofting; s42, gate pier reinforcing steel bars are bound and installed; s43, a gate pier formwork is erected above the gate bottom plate; s44, a hole forming device is installed at the designed position; s45, concrete pouring, vibrating and curing are conducted; and S46, after initial setting of the concrete, the hole forming device is pulled out of the pipe, and a formed hole cavity is filled with a tough material. The sluice pier crack can be effectively controlled, and the use durability and safety of the sluice are improved.
Owner:SHANDONG JIAOTONG UNIV +4
Immersed rotary ceramic membrane aeration device
ActiveCN119638091AGuaranteed uniformityUniform air distributionWater aerationSustainable biological treatmentElectric machineryCeramic membrane
The invention discloses an immersed rotary ceramic membrane aeration device. The immersed rotary ceramic membrane aeration device comprises a base, a waterproof rotary motor, a rotary ceramic membrane component and a rotary joint, an internal air channel of the rotary ceramic membrane comprises an inner ring air collection cavity, a plurality of air flow channels with the same size and structure and an outer ring aeration cavity, the inner ring air collection cavity is communicated with air outlet holes corresponding to the rotary ceramic membrane where the inner ring air collection cavity is located and is communicated with the outer ring aeration cavity through the air flow channels, and different air flow channels distribute air independently. The inner ring gas collection cavity carries out secondary distribution on inlet gas, so that gas distribution is more uniform, the gas subjected to secondary distribution passes through the gas flow channels to be uniformly aerated, and meanwhile, the outer ring aeration cavity at the tail ends of the gas flow channels communicates all the gas flow channels, so that the aeration uniformity in each gas flow channel is further ensured. The whole device can be submerged in water for use, and installation, maintenance and application are all relatively flexible, simple and convenient.
Owner:SUNTAR MEMBRANE TECHNOLOGY (XIAMEN) CO LTD
Rolled extra-thick stainless steel composite plate and production method thereof
PendingCN119615014AGuaranteed StrengthGuaranteed impact toughnessArc welding apparatusFurnace typesCrazingSS - Stainless steel
The invention discloses a rolled extra-thick stainless steel composite plate and a production method thereof. Base layer steel comprises the following chemical components in percentage by weight: 0.12-0.16% of C, 0.18-0.30% of Si, 1.30-1.50% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.02-0.04% of Alt, 0.15-0.25% of Cr, 0.50-0.60% of Mo, 0.55-0.65% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.02% of Nb, less than or equal to 0.0010% of B and the balance of Fe and inevitable impurity elements. The cladding stainless steel comprises the following chemical components in percentage by weight: less than or equal to 0.03% of C, less than or equal to 0.75% of Si, less than or equal to 2.00% of Mn, less than or equal to 0.035% of P, less than or equal to 0.015% of S, 8.0-12.0% of Ni, 18.0-20.0% of Cr, less than or equal to 0.10% of N and the balance of Fe and inevitable impurity elements; the process route comprises the steps of blank welding compounding, vacuumizing, controlled rolling and quenched-tempered heat treatment. The SA533B CL1 + SA240304L stainless steel composite plate with the thickness of 62-69 mm is produced, the inspection yield strength is larger than 345 MPa, the tensile strength is larger than 550 MPa, the impact energy at the temperature of 10 DEG C is larger than or equal to 200 J, the shear strength is larger than 310 MPa, and the intergranular corrosion crack rate is 0.
Owner:HUNAN VALIN XIANGTAN IRON & STEEL CO LTD
Vector propulsion system of low-altitude airship
PendingCN119637061Aeasy to controlImprove the rotation effectRigid airshipsControl systemThree-dimensional space
The invention provides an innovative vector propulsion system of a low-altitude airship, aims to provide accurate attitude adjustment and path planning capabilities for the low-altitude airship in a complex space environment, and consists of a plurality of key components, comprising an executing mechanism, a power driving module, a vector rotating mechanism, a propeller connecting mechanism, a detecting module and a propeller control system. The core characteristic of the airship is that adjusted vector thrust can be applied to any direction in a three-dimensional space so as to respond to real-time attitude adjustment and control requirements, so that accurate vertical rising, lateral flying and rotating operation of the airship in a limited space are realized; due to the unique design, the influence of the thrust direction change on the gravity center of the airship is reduced to the maximum extent, and therefore it is ensured that the low-altitude airship keeps the stable posture, and meanwhile fine control is achieved; the system is further integrated with a set of independent control system so as to guarantee accurate output of thrust angles, meanwhile, the overall structure is light and handy, the system particularly meets the requirements of low-altitude small airships, and the maneuverability and adaptability of the system in a narrow space are enhanced.
Owner:BEIHANG UNIV
Cultivation work ship with openable and closable ship body
PendingCN119659863AGuaranteed StrengthAffect sailing speedHull interior subdivisionClimate change adaptationWater netFishery
The invention discloses a cultivation work ship with a ship body capable of being opened and closed, and relates to the technical field of cultivation work ships, the cultivation work ship comprises the ship body, a plurality of permeable nettings and a sealing assembly, a containing cavity is formed in the ship body, openings communicated with the containing cavity are formed in the two sides of the ship body, and the multiple permeable nettings divide the containing cavity into a plurality of cultivation areas; the sealing assembly is rotatably mounted to the hull for opening or sealing the opening. The water-permeable netting is arranged to divide the containing cavity into a plurality of culture areas, so that different types of fishes can be cultured, frequent water change between seawater and the plurality of culture areas can be achieved through the opening in the culture mode, the culture effect is guaranteed, automatic water change is achieved through the seawater, and the culture efficiency is improved. The breeding cost is reduced; the opening is sealed by driving the sealing assembly to rotate, so that the integrity of the appearance of the ship body is improved, the sailing resistance can be reduced, and the sailing speed is increased.
Owner:SOUTHERN MARINE SCIENCE & ENGINEERING GUANGDONG LABORATORY (ZHANJIANG)
Preparation method and application of high-strength wear-resistant heat-conducting composition and silica gel sheet
PendingCN119613967Aincrease elasticityImprove wear resistanceCooling/ventilation/heating modificationsPolymer sciencePtru catalyst
The invention relates to the technical field of silica gel sheets, in particular to a high-strength wear-resistant heat-conducting composition and a preparation method and application of a silica gel sheet. The invention discloses a high-strength wear-resistant heat-conducting composition which comprises the following components in parts by weight: 1-5 parts of methyl vinyl silicone rubber; 15 to 20 parts of vinyl silicone oil; 2-10 parts of white carbon black; 0.5-1 part of a first coupling agent; 50-70 parts of a heat conducting filler; 0.1 to 0.2 part of a chain extender; 5-10 parts of a cross-linking agent; 0.01 to 0.02 part of a catalyst; and 0.01 to 0.05 part of a polymerization inhibitor. According to the silica gel sheet provided by the invention, the binding force between the filler and the silica gel matrix is enhanced through the high heat conduction characteristic of the heat conduction filler powder and the treatment of the coupling agent, so that the overall heat conduction performance of the material is improved. Meanwhile, by controlling the particle size and the shape of the filler and adopting methods such as ball milling treatment, the mechanical property of the material is ensured, and the stable performance can be kept in long-time use.
Owner:DONGGUAN YIBEI NUCLEAR TECH CO LTD
Parking space lock
ActiveCN222632105UAvoid damage and deformationGuaranteed StrengthTraffic restrictionsParkingsLinear motionParking space
The utility model belongs to the field of parking space locks, and discloses a parking space lock which comprises a blocking piece, a locking piece and a locking piece. A driving unit; a transmission mechanism; a linear track; a substrate; when the driving unit drives the transmission part to move, the transmission part drives the moving part to slide along the linear rail and drives the connecting arm to slide along the linear rail and rotate relative to the moving part at the same time, so that the connecting arm drives the blocking part to turn over. When the blocking piece is subjected to external impact force in the open state, the blocking piece drives the connecting arm to move, the connecting arm drives the moving piece to slide relative to the linear rail, and the linear rail limits displacement of the moving piece in the direction perpendicular to the sliding direction of the moving piece. Power transmission is achieved through the transmission mechanism, the linear rail and the connecting arm are arranged independently, and the strength of the connecting arm and the transmission stability are guaranteed while the connecting arm moves; the linear track can assist the moving part in linear motion and can offset external impact force, so that the moving part is protected and prevented from being deformed and damaged; all the components can be integrated on the base plate, and therefore a user can conveniently install the parking space lock.
Owner:GUANGXUN INTERCONNECTION TECHNOLOGY (SHENZHEN) CO LTD
Large-gap MIG welding method for aluminum alloy
PendingCN119609304Aincrease the speed of solidificationreduce splashWelding accessoriesFillet weldWeld seam
The invention discloses an aluminum alloy large-gap MIG welding method which comprises the following steps: firstly, determining the thickness position and the welding direction of a fillet weld of a to-be-welded workpiece, determining welding current according to the thickness of the to-be-welded workpiece, and continuously heating a molten pool by adopting a delay staying method in an arcing stage; s2, in the welding stage, switches of the robot and the MIG welding machine are turned on, and a MIG welding gun walking path program carried by the welding robot is compiled; an MIG welding gun carried by the robot swings in a Z shape and swings back and forth, a double-pulse scheme is adopted in the welding process specification, according to the welding current scheme, the welding current is determined according to the thickness of the aluminum alloy, the welding parameter of welding swing in the forward direction is small current, and the welding parameter of welding swing in the backward direction is large current; and after swinging of the welding gun is finished, the welding gun continuously moves for a certain distance, and the welding gun moves to a welding end point. Effective welding can be achieved under the working conditions of different thicknesses and large gaps, and the welding quality is improved.
Owner:NINGBO HONGJU INTELLIGENT EQUIP CO LTD
Rapid ejection mechanism and ejection method for injection molding car lamp mold
The invention discloses a quick ejection mechanism and an ejection method for an injection molding car lamp mold, and relates to the technical field of plastic injection molding, the ejection mechanism comprises: an ejector pin which is arranged in a lower mold and can move up and down, one end of the ejector pin facing a cavity is provided with a sleeve head, and the sleeve head is made of a heat insulation flexible material; a gap is formed between the upper mold core and the upper mold plate, the upper mold plate is provided with a positioning pipe, the upper mold core is provided with a sleeve, the positioning pipe extends into the sleeve, the outer wall of the end, extending to the sleeve, of the positioning pipe is spherical, a supporting piece is arranged in the upper mold plate, and the supporting end of the supporting piece makes contact with the upper mold core and changes the deviation angle of the upper mold core relative to the axis of the injection molding opening. When an injection molding part is ejected, the problem that traces appear on the surface of a vehicle lamp due to the fact that the ejection force of the ejector pin is large is avoided, when demolding ejection is conducted, the ejection force applied to the surface of the vehicle lamp by the ejector pin is reduced, and clamping swing on the top of the vehicle lamp is combined.
Owner:HANGZHOU KAIMEI MOLD
Buffering parking lock movement and parking lock
The utility model belongs to the field of parking space locks, and discloses a buffering parking space lock movement and a parking space lock. The utility model discloses a buffering parking lock movement which comprises a transmission mechanism and a buffering mechanism. A driving unit; a supporting seat; a movement cover; when the driving unit drives the screw rod to rotate, the screw rod drives the nut to move along the linear track; when the nut is subjected to external impact force in the first direction, the nut drives the screw rod to move in the first buffer gap along the linear track relative to the supporting seat; the parking space lock comprises any one of the buffering parking space lock movement, a connecting arm and a blocking piece. According to the buffering parking lock machine core, power transmission is achieved through the transmission mechanism, so that the nut, the screw rod and the driving unit are subjected to buffering protection through the first buffering gap, and deformation and damage of the nut, the screw rod and the driving unit when the nut, the screw rod and the driving unit are subjected to external impact force are reduced; according to the parking lock, the buffering parking lock movement is adopted, the linear track and the connecting arm are arranged independently, and the whole structure is stable in movement.
Owner:GUANGXUN INTERCONNECTION TECHNOLOGY (SHENZHEN) CO LTD
High-strength composite corrugated board and preparation process thereof
InactiveCN119663686Ahigh strength bearing capacityhigh strengthWater-repelling agents additionSpecial papercardboardPolyurethane adhesive
The high-strength composite corrugated board is characterized by comprising an inner paper layer, a flexible composite layer, an adhesive paper layer, a paper core, a buffer foam board, a reinforced composite layer and a surface paper layer which are sequentially arranged from top to bottom, the upward waveform of the paper core is of a parabola-shaped top structure, and the downward waveform of the paper core is of a triangular vertex angle structure. The corrugated board has the beneficial effects that the compression resistance and the strength of the outer side and the stress buffering performance of the inner side are guaranteed, the overall strength and the bending resistance of the corrugated board are enhanced, the bonding strength is guaranteed by providing a new formula of the flame-retardant polyurethane foam and the waterproof polyurethane adhesive and a combined use method, and the service life of the corrugated board is prolonged. The toughness and the buffering effect are enhanced, the toughness and the pressure bearing capacity of the paperboard are enhanced, and meanwhile the excellent waterproof and flame-retardant effects are guaranteed.
Owner:宿迁科佳环保科技有限公司
Civil engineering crack detecting and repairing device
InactiveCN119615720AGuaranteed StrengthGuaranteed efficiencyMeasurement devicesRoads maintainenceArchitectural engineeringStructural engineering
The invention discloses a civil engineering crack detecting and repairing device, and belongs to the technical field of road construction, the civil engineering crack detecting and repairing device comprises a moving device, a crack width detector mounted on the front side of the moving device, a hopper arranged on the moving device, and a mixed discharging assembly arranged at the bottom of the hopper, and the moving device can drive the hopper to move linearly; a baffle is arranged in the middle of the hopper and divides the hopper into an asphalt storage cavity and an aggregate storage cavity, a first discharging hole and a second discharging hole which are communicated with the asphalt storage cavity and the aggregate storage cavity are formed in the bottom of the hopper respectively, and control valves are installed in the first discharging hole and the second discharging hole respectively. The crack width detector is used for measuring the civil engineering surface crack width L. According to the device, civil engineering cracks can be repaired in time after being detected, and the measurement and maintenance efficiency of the civil engineering cracks can be improved.
Owner:CHONGQING JIAOTONG UNIV
Small photoelectric pod equipment based on optical super-resolution technology
ActiveCN222616447Ureal-time outputreduce weightAircraft componentsStands/trestlesEngineeringImage pair
The utility model relates to the technical field of optoelectronics, in particular to a small photoelectric pod device based on the optical super-resolution technology, which comprises an azimuth base, a pitching frame and a photoelectric mechanism, the pitching frame is arranged on the surface of the bottom end of the azimuth base, and the photoelectric mechanism is arranged on the inner side of the middle of the surface of one side of the pitching frame. According to the device, the nacelle supports seamless switching between daytime work and night work through three kinds of photoelectric equipment, images can be collected remotely, interest point targets can be positioned, and visible light and infrared videos can be output in real time through full-high-definition videos; and unnecessary weight is reduced while strength is guaranteed, so that the pod is smaller in size and lighter in weight compared with products of the same type, light weight is achieved to the maximum extent under the condition that three kinds of optical equipment are carried, the discovery and recognition accuracy of a time-sensitive target can be improved, cost is reduced, and the pod is suitable for popularization and application. And a certain help is also provided for reducing the overall weight.
Owner:CHANGSHA ZHURONGZHITONG TECHNOLOGY CO LTD
Vehicle body structure and railway vehicle
PendingCN119590459AGuaranteed stiffnessGuaranteed StrengthRailway roofsUnderframesStructural engineeringMechanical engineering
Owner:BAOTOU NORTH VENTURE
Circular saw blade base body provided with vibration reduction inner cavity and method
The invention discloses a circular saw blade base body provided with a vibration reduction inner cavity and a method, solves the problem that the rigidity of a saw blade is reduced due to the arrangement of a vibration reduction groove of the saw blade in the prior art, and has the beneficial effects of effectively absorbing vibration and improving the rigidity of the saw blade. Comprising a first saw blade body and a second saw blade body, the inner side face of the first saw blade body is connected with the inner side face of the second saw blade body, and a damping groove is formed in the inner side face of at least one of the first saw blade body and the second saw blade body so that a circular saw blade base body can be provided with a damping inner cavity; the depth of the vibration reduction grooves is smaller than the thickness of the first saw blade body or the second saw blade body, and when the first saw blade body and the second saw blade body are provided with the vibration reduction grooves, the shapes of the vibration reduction grooves are the same or different, and the arrangement modes of the vibration reduction grooves are the same or different. The first saw blade body and the second saw blade body are both provided with vibration reduction grooves, and when the first saw blade body and the second saw blade body are in butt joint, the vibration reduction grooves are arranged in a staggered mode.
Owner:山东大学日照研究院
Permanent and temporary combined assembly type underground structure plate wall connecting joint
ActiveCN224213363UGuaranteed Strengthensure safetyArtificial islandsUnderwater structuresSlurry wallArchitectural engineering
The utility model discloses a permanent and temporary combined assembly type underground structure plate wall connecting node which comprises an assembly type underground diaphragm wall, a full-length steel plate is installed on the side wall of the assembly type underground diaphragm wall, and a prefabricated structure plate is hoisted on the full-length steel plate. The gap between the prefabricated structural slab and the fabricated underground diaphragm wall is filled with ultra-high-performance concrete, and a steel bar structure is arranged in the ultra-high-performance concrete. According to the utility model, the rigid connection between the two prefabricated parts is realized, the integrity of the structure is improved, and the safety and durability of the underground structure are fully ensured; an underground diaphragm wall which is usually used as a temporary structure is changed into a permanent structure, so that the construction period is shortened, and the investment is saved; the ultra-high performance concrete poured in the joint can greatly shorten the anchoring length of the steel bars, enlarge the arrangement distance of the steel bars, obviously reduce the using amount of the steel bars on site and the binding workload, is convenient to install and simple in process, obviously improves the construction efficiency, and has high popularization and application value.
Owner:CHINA RAILWAY DESIGN GRP CO LTD
Slide rail mounting structure of airplane trunk
ActiveCN119659949Aeffective installationRealize regulationAircraft crew accommodationTrunk compartmentStructural engineering
The invention provides an aircraft trunk sliding rail installation structure, and belongs to the field of aircraft passenger cabin structural design, the aircraft trunk sliding rail installation structure comprises a top sliding rail, a back sliding rail, a top sliding block and a back sliding block, the top sliding rail and the back sliding rail are fixedly arranged on a passenger cabin structure, and sliding grooves extending in the length direction are formed in the top sliding rail and the back sliding rail; the top slide rail is provided with a plurality of top slide rail notches in the length direction, and the back slide rail is provided with a plurality of back slide rail notches in the length direction and mounting holes in the bottoms of the slide grooves; the luggage case comprises a plurality of luggage case bodies, the two sides and the back of each luggage case body are fixedly connected with a pull rod assembly and a vibration reduction assembly respectively, a top sliding block is fixedly connected with the pull rod assembly and slides into a top sliding rail through a top sliding rail notch, and a back sliding block is fixedly connected with the vibration reduction assembly and slides into a back sliding rail through a back sliding rail notch. The back sliding block is provided with a locking stud penetrating through the mounting hole, and the locking stud is matched with a nut to lock the back sliding block and the back sliding rail.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Giant modular wind power system
ActiveCN119616754Aso as not to damageGuaranteed StrengthMachines/enginesWind energy generationWind power systemFan blade
A giant modular wind power system comprises a wind wheel, and the wind wheel comprises at least two sets of stacked blades. Each group of stacked blades comprises at least two blades which are arranged up and down, and the upper and lower blades form a truss structure through a supporting body, so that the bending resistance of the stacked blades is more than three times higher than that of a single blade. The strength, the bending resistance and the fatigue resistance of the stacked blades can be greatly improved, the stacked blades cannot be damaged even if strong wind is encountered, then the safety of the whole wind wheel and the tower is protected, and economic losses are reduced; the wind power system can emit green electricity everywhere globally without going uphill and downsea, when the fan blades are made of aluminum materials, the service life can reach at least 60 years, and the fan blades can be recycled after being abandoned and cannot pollute the environment; and all parts can be delivered according to the size of a container, so that global barrier-free and low-cost transportation is realized.
Owner:BROAD BSB CO
Multi-density one-step molded cross-linked foaming boots
The utility model discloses a multi-density one-time forming cross-linked foaming boot, and relates to the technical field of shoes, the multi-density one-time forming cross-linked foaming boot comprises a boot sole, a boot vamp and a boot leg, the boot sole, the boot vamp and the boot leg are all made of EVA materials and are integrally formed in the same mold cavity in a cross-linked foaming mode, and the material density of the boot sole is higher than that of the boot vamp and that of the boot leg; a plurality of vertically-arranged supporting ribs are arranged on the inner wall of the boot leg. The method has the effect of improving the wearing comfort of the cross-linked foaming boots.
Owner:CIXIAN BAODAO PLASTIC & RUBBER SHOES CO LTD
Battery system and vehicle
PendingCN119601872Areduce weightIncrease energy densityCell component detailsGlass fiberButadiene Dioxide
The invention provides a battery system and a vehicle, the battery system comprises a first box body, a second cover body, a battery cell support and a battery cell, the first box body and the second cover body are matched to form a battery cell accommodating space, the battery cell is installed on the battery cell support, and the battery cell support is installed in the battery cell accommodating space; the first box body and the second cover body are prepared by taking resin as a base material and taking continuous glass fibers as a reinforcing material; the battery cell bracket is prepared from a polycarbonate material and a terpolymer of acrylonitrile, butadiene and styrene. The battery system disclosed by the embodiment of the invention is relatively light in weight and relatively high in energy density.
Owner:CHERY AUTOMOBILE CO LTD
Impregnation liquid for iron-based alloy magnetic powder core and impregnation method based on impregnation liquid
ActiveCN119588928AImprove the wrapping effectImprove permeabilityTransportation and packagingMetal-working apparatusNano siliconOrganic solvent
The invention discloses an impregnation liquid for an iron-based alloy magnetic powder core and an impregnation method based on the impregnation liquid. The impregnation liquid is prepared from the following components in percentage by mass: 5-15% of a metal organic compound, 5-20% of resin and 65-90% of an organic solvent. The impregnation method comprises the following steps that (1) iron-based alloy powder before insulation is put into impregnation liquid to be soaked, drying is conducted after soaking, and impregnated iron-based alloy powder is obtained; (2) carrying out insulation treatment on the iron-based alloy powder by using the nano silicon oxide dispersion liquid, and preparing an iron-based alloy magnetic powder core by using a powder metallurgy process after the insulation treatment, so as to obtain the iron-based alloy magnetic powder core; the obtained iron-based alloy magnetic powder core is cleaned and dried, and a to-be-impregnated iron-based alloy magnetic powder core is obtained; (3) completely immersing the iron-based alloy magnetic powder core into the impregnation liquid for soaking, and cleaning after soaking; and (4) heating and curing the cleaned iron-based alloy magnetic powder core, and naturally cooling to obtain the impregnated iron-based alloy magnetic powder core.
Owner:JIANGSU RED-MAG CO LTD +1
Positioning device for reserved steel bars of prefabricated reinforced concrete column
PendingCN119616142AGuaranteed vertical settingGuaranteed StrengthBuilding material handlingBuilding reinforcementsReinforced concrete columnRebar
The invention relates to a positioning device for reserved steel bars of a prefabricated reinforced concrete column, which comprises a positioning plate, a plurality of reinforcing steel bar positioning grooves, a plurality of reinforcing steel bar positioning plates, a plurality of reinforcing steel bar positioning plates and a plurality of reinforcing steel bar positioning plates, and is characterized in that the positioning plate is internally provided with a setting space and the periphery is provided with a plurality of reinforcing steel bar setting grooves; the fixing plate is arranged on the side portion of the positioning plate in a sleeving mode, a plurality of reinforcing steel bar mounting grooves are formed in the fixing plate corresponding to the reinforcing steel bar arranging grooves, and the reinforcing steel bar arranging grooves and the reinforcing steel bar mounting grooves are spliced to form reinforcing steel bar positioning holes; and the supporting columns are arranged at the bottom of the fixing plate, the structure is simple, and use is convenient.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD
Production method of steel bar for heavy-load automobile half shaft
PendingCN121874660AImprove purityimprove performanceElectric furnaceProcess efficiency improvementNon-metallic inclusionsMechanical engineering
The invention belongs to the technical field of bar production, and particularly relates to a production method of a steel bar for a heavy-load automobile half axle, and the steel bar comprises the following chemical components in percentage by mass: 0.39-0.42% of C, 0.25-0.35% of Si, 1.45-1.70% of Mn, less than or equal to 0.013% of P, less than or equal to 0.006% of S, less than or equal to 0.25% of Cr, less than or equal to 0.25% of Ni, 0.15-0.20% of Mo, 0.06-0.10% of V, less than or equal to 0.15% of Cu and the balance of Fe and inevitable impurities. The method has the advantages that high-performance, high-purity and low-cost production of the steel bar for the heavy-duty automobile half shaft is realized through green short-process production of'ecological electric furnace + LF + RH + continuous casting 'in combination with low-carbon component design and a controlled rolling and controlled cooling process. And macrostructures and non-metallic inclusions of the finished steel meet the requirements of high-end products.
Owner:BENGANG STEEL PLATES CO LTD
Supercritical carbon dioxide foaming rubber material and preparation method thereof
PendingCN119613824AGuaranteed StrengthUniform cell distributionBulk chemical productionRubber materialPolymer science
The invention discloses a supercritical carbon dioxide foamed rubber material and a preparation method thereof, and belongs to the technical field of foamed rubber. The foaming rubber is prepared from the following raw materials in parts by weight: 70 to 80 parts of natural rubber, 20 to 30 parts of chloroprene rubber, 20 to 30 parts of white carbon black, 4 to 5 parts of plasticizer, 1 to 1.5 parts of activating agent, 1 to 1.5 parts of coupling agent, 2 parts of anti-aging agent, 1.8 parts of sulfur, 3 to 4 parts of accelerant, 0.2 part of scorch retarder, 1 to 1.5 parts of potassium adipate, 5 parts of zinc oxide, 2 parts of magnesium oxide, 2 parts of stearic acid and 3.5 to 3.65 parts of supercritical carbon dioxide fluid. The continuous production of the rubber physical foaming sole can be realized, the foaming rubber vulcanization and foaming process can be completed by a one-time process, the size is basically stable after mold stripping, the sole can be used for subsequent shoemaking production without further processing, and the sole with relatively complex appearance size can be produced. The method is suitable for preparing the foamed rubber sole.
Owner:JIHUA 3514 LEATHER & FOOTWARE
A lightweight variable-luffing cylinder
The present invention discloses a lightweight variable-length oil cylinder, wherein the cylinder body comprises a tail, a connecting part and a head, wherein the diameter of the tail is smaller than the diameter of the connecting part; a plurality of first longitudinal grooves are provided around the outer wall of the tail, wherein each first longitudinal groove is provided with a reinforcing plate; two annular grooves are provided around the outer wall of the tail, wherein each first longitudinal groove is respectively located between each annular groove, wherein each annular groove is sleeved with a reinforcing ring; the diameter of the second longitudinal groove is smaller than the connecting part and larger than the diameter of the tail; the structure in the second longitudinal groove is the same as the structure in the first longitudinal groove; and anti-collision reinforcement units are provided around the center lines of the tail and the head. The present invention can ensure the strength of the overall structure while reducing the thickness of the cylinder, and at the same time, by providing the anti-collision reinforcement unit, further improve the structural strength, thereby avoiding damage caused by external force impact, and also has the beneficial effects of simple structure and long service life.
Owner:HUZHOU HUANFENG MACHINERY
Road and bridge anti-collision pier
ActiveCN222594575UEasy to installImprove energy absorptionClimate change adaptationBridge structural detailsReinforced concreteEnergy absorption
The utility model discloses a road and bridge anti-collision pier, and relates to the technical field of anti-collision piers. Comprising anti-collision frames, the number of the anti-collision frames is at least two, the two anti-collision frames are fixed, a plurality of inner frames are installed in the anti-collision frames, a plurality of anti-collision plates are further fixed outside the anti-collision frames, each anti-collision frame comprises a patch and an outer blocking piece, and the patch and the two ends of the outer blocking piece are fixed through connecting plates. The surface of the patch is arc-shaped and is attached to the surface of the road pier. Through the arrangement of the anti-collision frame, the inner frame, the anti-collision plate and the like, compared with a traditional construction method, installation of the anti-collision pier is simpler, after the anti-collision frame is installed and fixed through the screw rods, reinforced concrete is poured into the inner frame, a formwork does not need to be erected and then disassembled, and the construction cost is reduced. In addition, the anti-collision pier has good energy absorption and buffering effects, and compared with a traditional anti-collision pier, the anti-collision pier has a good protection effect on the vehicle.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD
Fire grate segment, fire grate frame and small garbage incinerator
ActiveCN222597742UImprove cooling effectAvoid partial wearStructural engineeringMechanical engineering
The utility model discloses a fire grate segment, a fire grate frame and a small garbage incinerator, and belongs to the technical field of environmental protection. The fire grate segment comprises a fire grate segment cover plate, a fixed shaft position and a plurality of parallel rib plates are arranged at the lower end of the fire grate segment cover plate, and vent holes are formed in the side end of the fire grate segment cover plate. A vent groove is formed in the upper surface of the fire grate segment cover plate; the fire grate segments are fixed through the fixing shaft positions, the heat dissipation performance of the fire grate segments is improved through the rib plates, and the ventilation capacity of the fire grate segments is increased through the ventilation holes and the ventilation grooves. According to the fire grate segment disclosed by the utility model, the plurality of rib plates are longitudinally arranged in the fire grate segment cover plate, so that the strength is ensured, and the heat dissipation performance of the fire grate is improved; by arranging the first axial position and the second axial position, the fire grate segment is prevented from eccentric wear and tilting to a certain extent, the use requirement of the garbage incinerator can be met, the structure is simple, and meanwhile the production and maintenance cost is reduced by adopting an integrated casting.
Owner:JIANGSU NUOLAN ENVIRONMENTAL PROTECTION TECH CO LTD
Lightweight floor structure
ActiveCN222610647UGuaranteed StrengthImprove carrying capacityLamination ancillary operationsLaminationAluminum honeycombStructural engineering
The utility model provides a light-weight floor structure, and relates to the technical field of light-weight plates. The device comprises an aluminum plate, the plurality of supporting bodies are arranged in sequence and are pressed between the two groups of aluminum plates which are arranged in parallel, and the supporting bodies are arranged to be in a circular truncated cone shape. The supporting body is in a circular truncated cone shape, the bearing capacity is greatly improved, the aluminum plate and the supporting body are pressed and formed, the strength of the floor material can be guaranteed, meanwhile, manufacturing is convenient and fast, cost is low, and the floor material is a novel material replacing an aluminum honeycomb plate or a foaming material and an aluminum plate.
Owner:HANGZHOU ALAIXIAO MASCH MFG CO LTD
A high-plasticity 1500MPa grade ultra-high strength steel and its preparation method
ActiveCN117344201Bunique designImprove strong plasticityTemperature control deviceFurnace typesStringerReaction zone
A high-plasticity 1500MPa grade ultra-high strength steel and a manufacturing method thereof, wherein the weight percentage of the components is: C 0.35-0.40%, Si 1.0-1.8%, Mn 1.5-2.0%, Cr 0.3-0.6%, Al 0.02-0.05%, Ti 0.02-0.05%, B 0.002-0.02%, and the balance includes Fe and other inevitable impurities; and at the same time, the carbon equivalent C of the peritectic reaction zone is satisfied. eq1 >0.17%, C eq1 =C-0.03Mn-0.06Si-0.222S-0.04P; welding carbon equivalent C eq2 ≤0.56%, C eq2 =C+Mn / 20+Si / 30+2P+4S. The ultra-high strength steel of the present invention has a yield strength of 1000-1300 MPa, a tensile strength of ≥1500 MPa, an elongation at break of ≥18%, and good surface quality, and is particularly suitable for manufacturing vehicle structural parts and safety parts with complex shapes and high requirements on forming performance, such as A / B pillars, door anti-collision bars, longitudinal beams, bumpers, etc.
Owner:BAOSHAN IRON & STEEL CO LTD
Heat treatment process for high-strength aluminum alloy
PendingCN119615022AQuality assuranceGuaranteed StrengthFurnace typesHeat treatment furnacesSolution treatmentSilumin
The invention provides a high-strength aluminum alloy heat treatment process which comprises the following steps: firstly, performing two-stage homogenization treatment: firstly, heating an aluminum bar to 400-420 DEG C, preserving heat for 4-10 hours, then transferring to 420-480 DEG C, and preserving heat for 10-20 hours; then, the aluminum bar is subjected to solution treatment, specifically, the aluminum bar is subjected to heat preservation for 1-4 h at the temperature of 360-420 DEG C; then, in the extrusion process, an extrusion die is preheated, the temperature is kept at 360-380 DEG C, the extrusion speed is 2-5 m / min, and the temperature of an extrusion outlet is 380-420 DEG C; then, on-line solution treatment and on-line quenching are conducted, specifically, after extrusion forming is conducted, the formed material is heated to 450-480 DEG C on line, heat preservation is conducted for 0.5-4 h, and then on-line water spraying quenching is conducted immediately to the room temperature; then, multi-stage aging is conducted, specifically, in the first-stage aging, heat preservation is conducted for 12-18 h at the temperature of 110-130 DEG In the second-stage aging, the temperature of-80 DEG C to-180 DEG C is kept for 2 And in the third-stage aging, the temperature of 160-220 DEG C is kept for 6- By means of the high-strength aluminum alloy heat treatment process, the alloy structure homogenization of the forming material can be effectively improved, and the strength, hardness and elongation of the forming material are improved.
Owner:GUANGDONG XINGFA ALUMINUM +1