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43results about How to "Improved damping performance" patented technology
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Light-weight concrete, multifunctional protective plate adopting concrete, and preparation method
ActiveCN103922668AGood flexibilityLarge specific surface areaSolid waste managementCeramicwareFiberFoam concrete
The invention belongs to the fields of building materials and construction technology. Light-weight concrete consists of a concrete base layer and waterproof surface layers, wherein the concrete base layer comprises the following components in parts by weight: 100 parts of cement, 0.1-10 parts of chrysotile fibers, 0.01-2 parts of water repellent, 10-30 parts of pulverized fuel ash, 0.1-6 parts of water reducer, 50-200 parts of water, and 1-20 parts of foaming agent or air entraining agent; the upper side and the lower side of the concrete base layer are coated with the waterproof surface layers which comprise the following components in parts by weight: 100 parts of penetrating type organosilicon waterproofing agent, 0.1-20 parts of nano TiO2, 0-2 parts of activity enhancer, 0.01-5 parts of dispersion stabilizer, and 50-200 parts of solvent. Correspondingly, the microporous structure of the foam concrete or air-entrained concrete is uniform, and the mechanical performance is improved.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Transformation strengthened cold-machined high-strength steel, steel tube and manufacturing method thereof
The invention provides a transformation strengthened cold-machined high-strength steel, a steel tube and a manufacturing method thereof. The steel comprises the following chemical components in percentages by weight: 0.11-0.17% of C, 0.1-0.5% of Si, 0.5-2.0% of Mn, 0.01-0.05% of Al, 0.001-0.01% of Ca, less than or equal to 0.015% of P, less than or equal to 0.003% of O, less than or equal to 0.005% of S, less than or equal to 0.004% of N, and the balance of Fe and inevitable impurities, and meanwhile, the following relationship is required to be satisfied: 0.3%<C*Mn+Cr+2Mo<1.1%. The cold-machined high-strength steel tube is prepared by a transformation strengthened and strain strengthened composite process, the yield strength of the steel tube reaches 890 MPa or above, the elongation is greater than or equal to 10%, the structure of the steel tube is deformation ferrite and tempered martensite, and damping performance is excellent.
Owner:BAOSHAN IRON & STEEL CO LTD
Wide-temperature domain high-shock absorbance sports footwear sole rubber material and its preparation method
The invention relates to a wide-temperature domain high-shock absorbance sports footwear sole rubber material and its preparation method. The material is suitable for sports footwear soles with wide temperature domain requirement and high shock absorbance performance requirement. The wide-temperature domain high-shock absorbance sports footwear sole rubber material is composed of brominated butyl rubber, BR, a strengthening agent, a vulcanizing agent and a sulfuration promoter, and petroleum resin. The maximum loss factor value of the wide-temperature domain high-shock absorbance sports footwear sole rubber material is 0.34-0.45, the damping temperature domain (tan delta is greater than or equal to 0.2) is -44-53 DEG C, DIN abrasion is less than or equal to 100mm<3>. The material has the advantage for keeping good shock absorbance performance in wide temperature domain.
Owner:CHINA LEATHER & FOOTWEAR IND RES INST
Magnesium alloy formula of starter housing
The invention relates to a magnesium alloy formula of a starter housing, which contains magnesium, aluminum, zinc, manganese, rare earth, iron, silicon, copper and nickel and does not contain calcium and strontium. AZ91D (magnesium alloy) is used for making a starter front cover, the quality is only 0.4kg, the cutting process is easy, no dust exists, and the labor intensity of workers is low. The starter front cover is made of magnesium alloy materials, thus the weight of each starter can be lightened by 2kg, the cutting process is easy, no dust exists, and the labor intensity of workers is low. The magnesium alloy has very high specific strength and specific stiffness (only inferior to titanium alloy and in the second place in metallic materials), good damping and shock absorption properties, good thermal conductivity, strong electromagnetic shielding capacity and good compatibility with the environment, and can be recovered easily. According to statistics, when the self-weight of an automobile is reduced by 10%, the fuel consumption can be reduced by 5.5%, the fuel economy can be improved by 3%-5%, and simultaneously, the emission can be reduced by about 10%. The invention has practical significance of saving energy sources and reducing environmental pollution.
Owner:无锡市闽仙汽车电器有限公司
Sound insulation coating for building floor and preparation method thereof
InactiveCN112011240AImprove shock absorptionImprove water resistanceFireproof paintsConjugated diene hydrocarbon coatingsPolymer scienceAcrylonitrile
The invention discloses a sound insulation coating for a building floor and a preparation method of the sound insulation coating. The sound insulation coating for the building floor comprises the following components in percentage by weight: 8%-15% of an acrylic emulsion, 5%-7% of floating beads, 38%-45% of stone-free mineral wool, 3%-5% of mica powder, 1%-5% of butadiene-acrylonitrile rubber powder, 30%-35% of water and 1% of auxiliary materials, wherein the acrylic emulsion is a compound emulsion of an acrylic elastic emulsion and an acrylic styrene-acrylic emulsion in a mass ratio of (11-15): (6-9). According to the sound insulation coating for the building floor, the compound emulsion of the acrylic acid elastic emulsion and the acrylic acid styrene-acrylic emulsion is used as a basicglue emulsion of the coating, and the components such as the floating beads, the stone-free mineral wool, the mica powder and the butyronitrile rubber powder are matched for use, so the sound insulation coating has good sound insulation and shock absorption effects and also has excellent water resistance. The preparation method is mild in conditions and low in energy consumption, and can effectively prepare and produce the sound insulation coating for the building floor on a large scale.
Owner:惠州市百胜声学科技有限公司
Rubber-coated ABS thermoplastic elastomer for damping and manufacturing method of elastomer
The invention discloses a rubber-coated ABS thermoplastic elastomer for damping and a manufacturing method of the elastomer. The elastomer is prepared from, by weight, 30-50 parts of thermoplastic polyester elastomers, 20-40 parts of styrene block copolymers, 0-15 parts of extending oil, 5-15 parts of a compatilizer, 0-10 parts of inorganic filler, 0.1-3 parts of a lubricant, 0.1-1 part of an antioxidant and 0.1-1 part of an anti-UV agent. According to the rubber-coated ABS thermoplastic elastomer for damping, by adding the thermoplastic polyester elastomers, the adhesive power of the rubber-coated ABS thermoplastic elastomer to ABS is obviously improved, and accordingly the rubber-coated ABS thermoplastic elastomer more conveniently wraps a grip of an electric tool; by adding the thermoplastic polyester elastomers, the damping and shock absorption effect of the rubber-coated ABS thermoplastic elastomer for damping is obviously improved; by adding the compatilizer, the thermoplastic polyester elastomers are integrally bound, and the separation phenomenon cannot occur.
Owner:中广核高新核材集团(东莞)祈富新材料有限公司
High-foaming reinforcing rubber sheet
ActiveCN111423836AGood compatibilityHigh initial adhesionNon-macromolecular adhesive additivesMacromolecular adhesive additivesPolymer scienceNitrile rubber
In order to solve the problems of fixed thickness and unsatisfactory reinforcing effect of conventional automobile reinforcing rubber sheets, the invention provides a high-foaming reinforcing rubber sheet. The reinforcing rubber sheet is composed of the following substances in parts by mass: 1-10 parts of carboxyl-terminated liquid nitrile rubber, 5-50 parts of calcium carbonate, 10-40 parts of hydantoin epoxy resin, 1-5 parts of a foaming agent, 5-20 parts of dibutyl phthalate, 0.1-1 part of a peroxide vulcanizing agent and 1-10 parts of a curing agent. The reinforcing rubber sheet of the invention has the advantages that the reinforcing rubber sheet is lighter and is beneficial for promoting lightweighting of an automobile; the strength of the reinforcing rubber sheet can be improved through microcellular foaming, and under a foaming condition, reinforcing multiplying power can also reach 5-6 times; meanwhile, due to the existence of a mesoporous structure, damping effect is better,the stress of the reinforcing rubber sheet during epoxy curing can be dispersed due to the existence of micropores; the reinforcing rubber sheet has better conformability during application, and doesnot causes deformation of a steel plate.
Owner:重庆钧业新材料科技股份有限公司
Steel pipe used for shock absorber
InactiveCN105937703AExtended service lifeSimple structureElongated constructional elementsSpringsMetallurgyAlloy coating
The invention discloses a steel pipe used for a shock absorber. The steel pipe comprises a steel pipe body, a first damping shock absorption layer, a Ni-Co alloy coating layer, a second damping shock absorption layer and a Fe-Ni-W alloy coating layer; the first damping shock absorption layer and the Ni-Co alloy coating layer are arranged on the inner surface of the steel pipe body from outside to inside, the second damping shock absorption layer and the Fe-Ni-W alloy coating layer are sequentially arranged on the outer surface of the steel pipe body from inside to outside; and according to the above manner, the steel pipe is simple in structure, good in damping shock absorption performance and capable of prolonging the service life of the shock absorber.
Owner:无锡必胜必精密钢管有限公司
Foam material, ultrathin damping foam material layer for damping of AMOLED module, assembly and preparation method
PendingCN113651995AImproved damping performanceDecreased damping effectFilm/foil adhesivesPolymer scienceIn vehicle
The invention discloses a foam material, an ultrathin damping foam material layer for damping of an AMOLED module, an assembly and a preparation method, the foam material is a foam body material which is prepared from a film-forming polymer and internally provided with a foam structure, and the density of the foam body material is 0.4-0.9 g / cm < 3 >; the foam body material has a loss factor not lower than 0.4 in a temperature interval of 10-30 DEG C; the glass transition temperature Tg of the film-forming polymer is (-10)-30 DEG C, and the film-forming polymer is formed by copolymerizing at least two or more different monomers with the Tg difference larger than 50 DEG C. The foam material prepared by the invention can absorb impact force, has excellent impact resistance, and can be widely applied to mobile phones, tablet personal computers, pen televisions, vehicle-mounted equipment and wearable equipment as a buffer material by utilizing the characteristic.
Owner:上海叹止新材料科技有限公司
Buffer type safe anti-collision street lamp
InactiveCN111750309AGood elastic supportAvoid bendingMechanical apparatusProtective devices for lightingTraffic crashTraffic accident
Owner:杨李强
Automobile shock absorber
InactiveCN106704458APlay a compensatory roleRealize the buffering effectSpringsSprings/dampers manufactureInlet channelCar manufacturing
The invention discloses an automobile shock absorber. The automobile shock absorber comprises a buffer connected with an automobile adapter, wherein the buffer comprises a buffer housing; the buffer housing is provided with a piston cavity; a buffering piston shaft is mounted in the piston cavity in a sliding manner; a damping cylinder is arranged in the piston cavity; a reset spring is arranged in the damping cylinder; a lubricating oil inlet channel is formed in the buffer housing; an oil storage tank is formed in one side located on the lubricating oil inlet channel, of the buffer housing; a plurality of through holes are formed in the damping cylinder; the through holes communicate with the piston cavity and the oil storage tank; a lubricating oil discharging channel is formed in one side, away from the lubricating oil inlet channel, of the buffer housing; and damping channels which are respectively formed in two sides of the piston and communicate with the buffering piston shaft are arranged on the piston of the buffering piston shaft. According to the shock absorber disclosed by the invention, through unique structural design, multiple beneficial effects are archived, so that the shock absorber has good application prospects and latent industrial productive capacity in the automobile manufacturing field and the shock absorber field.
Owner:窦贵昊
Carbon fiber and glass fiber mixed type plane grating rib
InactiveCN104175652AImprove flexibilityImprove bending strengthGlass/slag layered productsEpoxyHybrid type
The invention relates to the technical field of reinforcing materials of concrete structures and in particular relates to a carbon fiber and glass fiber mixed type plane grating rib comprising three carbon fiber bundle layers, wherein alkali-free glass fiber bundle layers are arranged among the three carbon fiber bundle layers. The carbon fiber and glass fiber mixed type plane grating rib comprises the following components in percentage by volume: 20%-35% of carbon fiber, 20%-35% of glass fiber, 40%-45% of epoxy resin, 0.6%-1.5% of curing agent, 1.1%-1.8% of accelerant, 0.8%-1.2% of low shrinkage agent, 0.6%-1.1% of release agent, 0.8%-1.6% of fire retardant, 0.2%-0.8% of antistatic agent and the balance being padding. According to the carbon fiber and glass fiber mixed type plane grating rib, elastic modulus is close to 145GPa, limiting strain achieves 3.5% and is about 2 times that of a common GFRP rib, damping property is good, fatigue resistance is good, and bond durability with concrete is good. The carbon fiber and glass fiber mixed type plane grating rib is widely applied to concrete marine environment structural engineering field and can be used as substitute for a rebar, the service life is prolonged, and designability is strong.
Owner:CHANGZHOU HUIYUN COMPOSITE MATERIALS
High-pulsation-resistance exhaust system design method of piston engine and exhaust system
ActiveCN107327336AWeaken air pulsationImprove carrying capacityExhaust apparatusSilencing apparatusPistonForced induction
The invention provides an exhaust system design method applied to high-pulsation-resistance exhaust of a two-cylinder piston engine, reduces the impact load suffered by a pressurizer during working, prolongs the working reliability of the pressurizer, and prolongs the service life. The method designs two aspects of contents: a pneumatic principle and a structure; the design of pneumatic principle aspect aims to reduce the pressure pulsation of air currents in an exhaust system pipe; the main design method determines structural design parameters of the exhaust system through the pressure wave analysis of the exhaust pipe, and corrects the same; and meanwhile, a high-pulsation-resistance bearing is adopted to reduce vibration under high-temperature and high-speed airflow impact of a turbocharger.
Owner:北京领动国创科技有限公司
Cutting machine
InactiveCN107081798APrecise control of descent heightReduce the temperatureMetal working apparatusElectric machineryEngineering
The invention discloses a cutting machine, which belongs to the technical field of electric machinery. The cutting machine includes a frame, on which a workbench, a cutting mechanism and an automatic lifting mechanism are arranged, the cutting mechanism is arranged above the workbench, and the automatic lifting mechanism is connected with the cutting mechanism through a connecting rod. The lifting cylinder in the automatic lifting mechanism is connected with the cutting mechanism, the air source is turned on, and the lifting cylinder drives the cutting mechanism to move downward along the guide rails on the first support rod and the second support rod in the automatic lifting mechanism. A vertical scale is set on the workbench, a camera is set on the automatic lifting mechanism, and a control device is also set on the workbench. Both the camera and the pressure regulating valve of the lifting cylinder are electrically connected to the control device; Touch screen for cutting depth. The cutting machine of the invention can not only effectively control the cutting depth, but also greatly reduce the vibration of the cutting knife during the working process of the cutting machine, and improve the cutting precision.
Owner:柳州市昌泉贸易有限公司
Damping shock absorption spring for bearing
InactiveCN106151342ASimple structureExtended service lifeShock absorbersEngineeringAbsorption effect
The invention discloses a damping shock absorption spring for a bearing. The spring comprises a spring body, shock absorption blocks are welded to the two ends of the spring body, the width of the shock absorption blocks is larger than that of the spring body, the two ends of the spring body are closed, and the interior of the spring body is filled with a metal wire. The damping shock absorption spring for the bearing is simple in structure and reasonable in design, through filling of the metal wire and use of the end shock absorption blocks, the spring has the transverse and longitudinal dual shock absorption effects, the damping shock absorption performance of the spring is effectively improved, occupied space is not increased, and the damping shock absorption spring can effectively prolong the service life of the bearing and is wide in market prospect.
Owner:SUZHOU CITY HUQIU DISTRICT HUSHUGUAN SPRING FACTORY
Damping spacer with unequal arm lengths
PendingCN108347024ASimple structureEasy to installMaintaining distance between parallel conductorsDevices for damping mechanical oscillationsEngineeringAbsorption effect
The invention discloses a damping spacer with unequal arm lengths. The damping spacer comprises long type fixed arms, short type fixed arms, a base, viscous dampers and a heavy ball; the base is of aregular polygonal shape; the long type fixed arms and the short type fixed arms are alternately arranged on the periphery of the base; the heavy ball is arranged in the center of the base; the heavy ball is connected with the base through the viscous dampers; and one ends of the viscous dampers are fixed on the base while the other ends are fixed on the heavy ball. By adoption of a mode that adjacent split wires have different arm lengths of fixed arms, the adjacent wires can be in heterotopic surfaces in space, the downstream wires can avoid the tail parts of the upstream wires, so that vibration excitation can be reduced; by adoption of the viscous dampers, the damping of the split wire-spacer system is improved, and the damping and shock absorption effect is reinforced; and the components are simply connected and mounted conveniently and efficiently.
Owner:NR ELECTRIC CO LTD +1
EPDM composition for torsional damper
ActiveUS9434836B2Stable temperatureUniform physical propertiesRubber-like material springsVibration suppression adjustmentsPolyolefinPolymer science
An EPDM composition for a torsional damper. The EPDM composition is made of (a) an EPDM polymer, (b) liquid polyolefin oligomer, and (c) carbon black, the EPDM composition containing 100 parts by weight of EPDM polymer that is the EPDM polymer of (a) having a propylene content of 35 to 50 wt % in the total amount of ethylene and propylene, 5 to 30 parts by weight of liquid polyolefin oligomer that is the liquid polyolefin oligomer of (b) having a number average molecular weight Mn within a range of 3,000 to 4,000, and 10 to 120 parts by weight of carbon black that is the carbon black of (c) having a nitrogen adsorption specific surface area within a range of 100 to 150 m2 / g, an iodine adsorption within a range of 110 to 160 mg / g, and a DBP oil absorption within a range of 70 to 135 cm3 / 100 g.
Owner:NOK CORP
Ageing-resistant shock-absorption styrene butadiene rubber material
The invention discloses an ageing-resistant shock-absorption styrene butadiene rubber material. The ageing-resistant shock-shock-absorption styrene butadiene rubber material is prepared from the following various ingredients in parts by weight: 50-65 parts of butadiene-styrene rubber, 40-50 parts of natural rubber, 15-18 parts of carbon black, 100-120 parts of modified light calcium, 80-90 parts of naphthenic oil 4010, 1-1.5 parts of an anti-ageing agent HS 911, 1-1.5 parts of an anti-ageing agent MB, 6-8 parts of zinc oxide, 1.2-1.5 parts of stearic acid, 1-2 parts of microcrystalline wax, 0.6-0.8 part of sulfur and 5-6 parts of an accelerant.
Owner:ANHUI LONGCHUAN RUBBER & PLASTIC TECH CO LTD
A light-weight vibration-isolating metal composite flywheel bracket and its preparation method and application
ActiveCN114060466BReduce weightRaise the first order vibration frequencyAdditive manufacturing apparatusIncreasing energy efficiencyHigh stiffnessMetallic materials
The invention discloses a lightweight vibration-isolating metal composite flywheel bracket, a preparation method and application thereof, and belongs to the technical field of metal material structure design and processing. The metal composite flywheel bracket includes a magnesium alloy base plate with light weight and high damping performance, a titanium alloy lattice sandwich flywheel mounting surface with vibration damping function, and a titanium alloy support beam with high rigidity; 3D printing combined method to fabricate lightweight vibration-isolating metal-composite flywheel brackets. The light-weight vibration-isolating metal composite flywheel bracket and the preparation method of the present invention have the advantages of small weight, high first-order vibration frequency, small magnification of the installation surface, wide applicability, and excellent performance.
Owner:UNIV OF SCI & TECH BEIJING
Environment-friendly flame-retardant ethylene-propylene-diene monomer rubber vibration-absorptive material and preparation method thereof
The invention discloses an environment-friendly flame-retardant ethylene-propylene-diene monomer rubber vibration-absorptive material. The environment-friendly flame-retardant ethylene-propylene-dienemonomer rubber vibration-absorptive material is prepared from the following components in parts by weight: 150 to 220 parts of ethylene-propylene diene copolymer, 10 to 20 parts of carbon black, 10 to 15 parts of a red phosphorus flame retardant RL-EP, 70 to 80 parts of modified magnesium hydroxide powder, 120 to 180 parts of aluminum hydroxide, 10 to 15 parts of white carbon black, 30 to 40 parts of naphthenic oil, 3 to 5 parts of an antiager RD, 8 to 10 parts of zinc oxide, 1.5 to 2.5 parts of zinc stearate, 1 to 2 parts of an active agent PEG-4000, 4 to 5 parts of magnesium oxide, 2 to 3 parts of a release agent L-24, 1 to 2 parts of a release agent KL-3Q, 1 to 2 parts of a vulcanizer S-80 and 3 to 5 parts of an accelerant.
Owner:ANHUI LONGCHUAN RUBBER & PLASTIC TECH CO LTD
A kind of manufacturing method of high-strength steel, steel pipe and steel pipe by phase transformation strengthening cold working
The invention provides a transformation strengthened cold-machined high-strength steel, a steel tube and a manufacturing method thereof. The steel comprises the following chemical components in percentages by weight: 0.11-0.17% of C, 0.1-0.5% of Si, 0.5-2.0% of Mn, 0.01-0.05% of Al, 0.001-0.01% of Ca, less than or equal to 0.015% of P, less than or equal to 0.003% of O, less than or equal to 0.005% of S, less than or equal to 0.004% of N, and the balance of Fe and inevitable impurities, and meanwhile, the following relationship is required to be satisfied: 0.3%<C*Mn+Cr+2Mo<1.1%. The cold-machined high-strength steel tube is prepared by a transformation strengthened and strain strengthened composite process, the yield strength of the steel tube reaches 890 MPa or above, the elongation is greater than or equal to 10%, the structure of the steel tube is deformation ferrite and tempered martensite, and damping performance is excellent.
Owner:BAOSHAN IRON & STEEL CO LTD
A kind of high damping fiber reinforced resin matrix composite material and its preparation method
ActiveCN111334062BImprove mechanical propertiesImproved damping performanceResin matrixResin-Based Composite
The invention belongs to the field of composite materials, and specifically discloses a high-damping fiber-reinforced resin-based composite material and a preparation method thereof. The fiber-reinforced resin-based composite material includes a resin matrix, fibers and a three-dimensional nanostructure, wherein the three-dimensional nanostructure Located at the intersection interface between the resin matrix and the fiber, the three-dimensional nanostructure includes two-dimensional nanomaterials and one-dimensional nanomaterials; The directions are the same; the one-dimensional nanomaterial is grafted on the two-dimensional nanomaterial, and its direction is perpendicular to the fiber direction. The invention introduces a novel three-dimensional nanostructure at the interface between the fiber and the resin, which can not only improve the mechanical properties of the composite material, but also significantly enhance the damping and shock absorption performance, so that it has very broad application prospects in the fields of aerospace, transportation and the like.
Owner:HUAZHONG UNIV OF SCI & TECH
UV-cured silica gel for lead sealing
InactiveCN112724927AGood weather resistanceGood oil resistanceNon-macromolecular adhesive additivesMacromolecular adhesive additivesSilica gelMethyl palmoxirate
The invention relates to the technical field of organic silicon photocuring new materials, and discloses UV curing silica gel for lead sealing, which is composed of the following components: 0 to 15 parts of a component A; 5 to 15 parts of a component B; 70 to 85 parts of a component C; 5 to 15 parts of a component D; 2.5 to 10 parts of a component E; 0.1 to 0.5 part of a component F; 0.2 to 1.0 part of a component G; and 10 to 25 parts of a component H; wherein the component A is methyl vinyl MDT type silicon resin, the component B is methyl vinyl MQ type silicon resin, the component C is high-viscosity (CH3)2(CH2=CH)SiO1 / 2 terminated linear structure polysiloxane, the component D is low-viscosity (CH3)2(CH2=CH)SiO1 / 2 terminated linear structure polysiloxane, the component E is terminal side hydrogen structure polysiloxane, the component F is a photoinitiator, the component G is an inhibitor, and the component H is magnetic powder. The magnetic powder is adopted to increase the bonding force between the lead and the metal surface, so that the silica gel still has higher bonding strength at high temperature, and the practicability of the optical adhesive is enhanced.
Owner:浙江中特化工有限公司
Car shock absorber assembly
InactiveCN106870613APlay a compensatory roleRealize the buffering effectSpringsSprings/dampers design characteristicsInlet channelCar manufacturing
The invention discloses a car shock absorber assembly which comprises a buffer connected with a car through connection disc. The buffer comprises a buffer shell provided with a piston cavity, a buffer piston shaft is installed in the piston cavity in a sliding manner, a damping barrel is arranged in the piston cavity, a reset spring is arranged in the damping barrel, and a lubricating oil inlet channel is formed in the buffer shell; an oil storage groove is formed in the side, provided with the lubricating oil inlet channel, of the buffer shell, a plurality of through holes are formed in the damping barrel, the piston cavity and the oil storage groove are communicated through the through holes, and an lubricating oil outlet channel is formed in the side, far away from the lubricating oil inlet channel of the buffer shell; and a damping channel for communicating the two sides of a piston of the buffer piston shaft is formed in the piston of the buffer piston shaft. According to the shock absorber assembly, through the unique structural design, many beneficial effects are obtained, and the good application prospect and industrial production potential are achieved in the field of car manufacturing and the field of shock absorbers.
Owner:窦贵昊
A planetary gearbox for hydraulic tongs
ActiveCN112696484BImprove carrying capacityImproved damping performanceGear lubrication/coolingGearing controlOil and greaseEngineering
The invention discloses a planetary gearbox for a hydraulic tong, comprising a box assembly, an input shaft, an output shaft, a first planetary gear train, a second planetary gear train and a connecting frame mounted on the box body assembly , low-speed gear clutch and high-speed gear clutch, the box assembly includes an upper end cover fixedly connected, a main box body and a lower end cover; the main box body is provided with a circle of annular protrusions and a radial grease injection hole, and the annular protrusions are located on the main In the middle of the inner wall of the box, the grease injection hole includes a grease injection end and a grease output end, and the grease output end is located in the middle of the inner wall of the annular protrusion; by adopting grease lubrication, the gearbox has a higher carrying capacity and better At the same time, the grease can form a grease ring with a certain sealing effect, which is conducive to the use in the humid and dusty environment of oil drilling; thus ensuring that the dry pneumatic friction clutch can be used in the harsh working conditions of oil drilling in normal use.
Owner:HANGZHOU ADVANCE GEARBOX GRP
Extrusion method for SiC particle enhanced AZ91D magnesium-based composite material tubular product
The invention relates to an extrusion method for a SiC particle enhanced AZ91D magnesium-based composite material tubular product and relates to the technical field of metal-based composite material processing. The extrusion method is to solve the technical problem that the SiC particle enhanced magnesium-based composite material which is extruded is easily cracked. The method comprises the following steps of S1, heating a SiC / AZ91D magnesium-based cast ingot; S2, turning; S3, extruding a SiC / AZ91D magnesium-based ring ingot by way of magnesium-coating extrusion; and S4, solid solution and ageing. The method comprises the step of extruding the SiC / AZ91D magnesium-based ring ingot by way of magnesium-coating extrusion. In the magnesium-coating extrusion process, the SiC / AZ91D magnesium-based ingot blank is free of a cracking phenomenon to obtain the SiC particle enhanced AZ91D magnesium-based composite material tubular product which has the characteristics of being low in density, highin specific strength and specific stiffness, good in isotropism in physical property, good in damping shock absorbing property, excellent in electromagnetic shielding effect and the like. The method provided by the invention is used for obtaining the SiC particle enhanced AZ91D magnesium-based composite material tubular product.
Owner:NORTHEAST LIGHT ALLOY CO LTD
Novel switch cabinet with damping effect
InactiveCN107425445AFree from shockFrom collisionSubstation/switching arrangement casingsAnti-seismic devicesElectric power equipmentEngineering
The invention belongs to the technical field of electric power equipment and provides a new type of switchgear with shock-absorbing effect. The switchgear is assembled from an upper side panel, a lower side panel, a left side panel, a right side panel, a front side panel and a rear side panel , the front side panel is divided into left cabinet door and right cabinet door, and the lower side panel is welded with buffer devices near the ground; the left side panel, right side panel, rear side panel, left cabinet door and right cabinet door are all equipped with protective devices; The four corners on the top of the panel are respectively movable to set the floor support rods. The switchgear is also equipped with an automatic cleaning device. The switchgear can be shockproof and shock-absorbing, maintain the stability of the switchgear, and protect the electrical components therein. At the same time, it also has an automatic cleaning function to keep the switchgear clean and prolong the service life of electrical components.
Owner:HEFEI ANLI ELECTRIC POWER ENG CO LTD
Method and apparatus for producing high porosity through hole multi-hole aluminum alloy
The invention discloses a method for manufacturing a high-porosity through-hole porous aluminum alloy. First, the aluminum alloy is heated to melt, and the temperature of the aluminum alloy melt is kept at 660°C to 750°C. Keep warm at ℃~660℃ until the temperature of the filler particles is uniform, and the balance accounts for 5%~20% of the theoretical aluminum alloy casting amount, then place the mold on the suction cup base of the negative pressure device, and then cast the aluminum alloy melt after heat preservation into the mold, and connect the mold to a negative pressure device with a pressure of -2KPa to -40KPa. After the aluminum alloy is solidified, take out the composite of filler particles and aluminum alloy, and remove the filler particles. The invention also discloses a high-porosity through-hole porous aluminum alloy, the porosity of which is 70%-95%. The invention also discloses a high-porosity through-hole porous aluminum alloy manufacturing device. The through hole of the 70%-95% porous aluminum alloy obtained by the invention reaches 20%-35%.
Owner:SOUTHEAST UNIV
Lightweight concrete, multifunctional protective board using the same and preparation method
ActiveCN103922668BImprove insulation effectImprove sound absorptionSolid waste managementCeramicwareFiberFoam concrete
The invention belongs to the fields of building materials and construction technology. Light-weight concrete consists of a concrete base layer and waterproof surface layers, wherein the concrete base layer comprises the following components in parts by weight: 100 parts of cement, 0.1-10 parts of chrysotile fibers, 0.01-2 parts of water repellent, 10-30 parts of pulverized fuel ash, 0.1-6 parts of water reducer, 50-200 parts of water, and 1-20 parts of foaming agent or air entraining agent; the upper side and the lower side of the concrete base layer are coated with the waterproof surface layers which comprise the following components in parts by weight: 100 parts of penetrating type organosilicon waterproofing agent, 0.1-20 parts of nano TiO2, 0-2 parts of activity enhancer, 0.01-5 parts of dispersion stabilizer, and 50-200 parts of solvent. Correspondingly, the microporous structure of the foam concrete or air-entrained concrete is uniform, and the mechanical performance is improved.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Damping rubber
The invention discloses damping shock absorption rubber which is prepared from the following components in parts by mass: 35-40 parts of rubber nanospheres, 40-65 parts of water-soluble acrylic resin, 5-10 parts of light calcium carbonate, 10-11 parts of water, 2.0-2.6 parts of a foaming agent, 2-3.5 parts of carbon black, 0.2-0.5 part of a tackifier, 5-8 parts of dioctyl terephthalate and / or diisononyl phthalate, 2-8 parts of carbon nanotubes, 1-3 parts of an adhesion promoter, 1-4 parts of a stabilizer and 3-5 parts of a flexibilizer. By adding a certain proportion of rubber nanospheres, the elastic effect of the rubber nanospheres is effectively utilized, and after the rubber nanospheres are adhered to the surface of an automobile through water-soluble acrylic resin, a very good damping effect is achieved; and by adding the light calcium carbonate and the carbon nanotubes, the weight of the coating is greatly reduced while the strength of the coating is ensured, and the light weight of the coating is realized.
Owner:张家港爱科思汽车配件有限公司
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