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139results about How to "Improve structural mechanical properties" patented technology
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Acellular biological patch, preparation method and apparatus thereof
The invention relates to an acellular biological patch, a preparation method and an apparatus thereof. In the invention, small intestines of pigs are taken as raw materials, which are subjected to a series of decellularization treatment by means of an acid, hydrogen peroxide, a mixed solution of high salt and alkali so as to obtain the acellular biological patch. According to the preparation method, after treatment by the hydrogen peroxide, the mixed solution of high salt and alkali can be employed to conduct twice recycling treatment, thus reaching the effects of thorough decellularization and antigen removal. The employment of a transverse and longitudinal alternating laying way maintains uniformity of the patch's mechanical properties, the tensile strength, suture tear force, tear strength and other mechanical indexes can well meet clinical demands, thus facilitating surgical suture operation. The employed drying mode has no need of any adhesive and suture line for fixation, so that a natural three-dimensional support structure of the product is maintained, and after implantation into the human body, no strong inflammatory response and immunological rejection response can occur. The patch has no toxicity on cells, so that infection and adhesion cannot occur in a repair process. The acellular biological patch provided in the invention is suitable for repair of body tissue defects and soft tissue injuries, and also can be used in the bioengineering field to serve as the tissue for reinforcing repair of membranous defects and infected wounds and serve as a biological scaffold material, etc.
Owner:SHAANXI BIO REGENERATIVE MEDICINE CO LTD
Laser auxiliary pre-stress shot blasting forming-strengthening composite process
The invention discloses a laser-assisted prestressed composite method for shot blasting, forming and strengthening. The method is as follows: firstly, a workpiece is deformed as expected in an elastic range through a mechanical preloading method; secondly, the elastic energy concentration region of a part is scanned with a laser beam; thirdly, shot blasting is carried out to the workpiece along a laser scanning path. When the method is adopted for forming, the thermal effect of the interaction between the laser and a material can reduce the deformation resistance (elastic modulus and yield strength) of the material in a laser action region, and can assist the part in shaping through an inhomogeneous thermal stress field established in the thickness direction of the part, thereby the compression bending forming amount, forming efficiency and forming precision of a shaped part can be remarkably improved; moreover, the shot blasting immediately carried out later can strengthen the strain of a heat action region, so as to improve structural mechanical property.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI
Construction method for strengthening concrete floor
ActiveCN103321444ALittle change in stressReduce the main tensile stressBuilding repairsShotcreteHigh pressure
The invention discloses a construction method for strengthening a concrete floor. The method is characterized by including the steps of firstly, drilling slots on the concrete floor; secondly, stripping off a main reinforcement protecting layer of the concrete floor, welding embedded iron parts to main reinforcement of the concrete floor, and welding a steel turning block to each embedded iron part; thirdly stripping off a concrete column longitudinal reinforcement protecting layer of a concrete column, and welding bearing steel plates to concrete column longitudinal reinforcement; fourthly, cleaning concrete floor scraps, and spraying concrete between each two steel turning blocks under the concrete floor; fifthly, mounting a guide plate in each slot of the concrete floor; sixthly, tensioning prestress stranded steel wires with an electrothermal method one day after concrete spraying is completed; seventhly using high-pressure grouting to grout high-strength cement paste into holes, penetrated by the prestress stranded steel wires, in the concrete floor; eighthly, setting cement mortar at the bottom of the concrete floor to serve as a protecting layer.
Owner:SHANGHAI XIANDAI ARCHITECTURE ENG & CONSULTING CO LTD
Topological optimization design method considering self-supporting constraints of additive manufacturing structure
ActiveCN111428397ALow costImprove structural mechanical propertiesDesign optimisation/simulationTotal factory controlMathematical modelProcess engineering
The invention discloses a topological optimization design method considering self-supporting constraints of an additive manufacturing structure, and belongs to the technical field of structural optimization design. Based on an SIMP method and a structure self-supporting mathematical model, the self-supporting characteristic of the structure is represented through a penalty function and serves as adisplay constraint condition, self-supporting constraint sensitivity filtering is adopted to promote evolution of the supporting structure, and the topological optimization design method consideringthe self-supporting constraint of the additive manufacturing structure is obtained. According to the method, structural self-supporting of a final topological optimization result is realized through progressive evolution of the supporting structure, and adding of the supporting structure through secondary design is avoided, so that the material cost is saved, and the design period is shortened. Besides, the method is completely suitable for continuum structure topology optimization, is high in flexibility and low in calculation cost, and can be implanted into an existing topology optimizationframework as an extended function.
Owner:CIVIL AVIATION UNIV OF CHINA
Structurally ordered chitosan/nanocellulose composite aerogel and preparation method thereof
ActiveCN111195508AImprove mechanical propertiesGood heat insulationAerogel preparationColloidal chemistry detailsFreeze-dryingThermal insulation
The invention discloses a structurally ordered chitosan / nanocellulose composite aerogel and a preparation method thereof. The preparation method comprises the following steps of: mixing a chitosan solution with a cross-linking agent, heating to form hydrogel, and carrying out oriented freezing on the chitosan hydrogel until the chitosan hydrogel is completely solid, then, performing drying to obtain chitosan aerogel, and soaking the chitosan aerogel in the nano-cellulose dispersion liquid, and carrying out freeze drying to obtain the chitosan / nano-cellulose composite aerogel constructed by a long-range ordered structure and a honeycomb structure. The chitosan / nanocellulose composite aerogel has an ordered structure combining long-range ordering and a honeycomb network, has the properties of small density, low thermal conductivity, excellent compression resilience and the like, belongs to the field of aerogel material preparation, and can be applied to the fields of thermal insulation,tissue engineering and the like.
Owner:DONGHUA UNIV
Novel large-span load-bearing prestress double-T plate construction method
ActiveCN104453229AImprove structural mechanical propertiesIncreased load-bearing capacityFloorsBuilding material handlingPre stressRebar
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD
Forecasting method for transmission intermediate shaft limit bearing capacity
ActiveCN111898218AHigh precisionReduce development costsGeometric CADDesign optimisation/simulationGear wheelIndustrial engineering
The invention belongs to the technical field of automobiles, and particularly relates to a forecasting method for transmission intermediate shaft limit bearing capacity. According to the invention, the method includes defining material nonlinearity and contact nonlinearity of parts; defining boundary conditions on a bearing outer ring; loading the gear meshing force to the gear meshing node; trulyreproducing the stress state of the intermediate shaft; obtaining a high-precision intermediate shaft gear engagement node rotation angle and intermediate shaft transmission torque relation curve; onthe basis, the curve slope ratio is adopted to accurately forecast the fracture limit bearing torque of the intermediate shaft, the simulation replacement test of the fracture limit bearing torque ofthe intermediate shaft is realized, the product development cost is reduced, and the problem of obtaining the limit bearing capacity of the intermediate shaft of the transmission at present is solved.
Owner:CHINA FIRST AUTOMOBILE
Combined bridge deck of arched corrugated steel plates and concrete
InactiveCN102121227AIncreased bending stiffnessImprove adhesionBridge structural detailsBridge materialsBridge deckStructural engineering
The invention discloses a combined bridge deck of arched corrugated steel plates and concrete, and the combined bridge deck comprises a bridge deck substrate consisting of a plurality of rows of arched corrugated steel plates arranged in parallel, a bridge deck bottom supporting structure for supporting and fixing the bridge deck substrate, and a concrete top layer formed on the bridge deck substrate in a pouring manner; the bridge deck bottom supporting structure is formed by assembling a plurality of beams which comprise a plurality of rows of lower vertical beams arranged in parallel and a plurality of lines of lower beams arranged in parallel; each row of arched corrugated steel plates are all fastened between two rows of lower vertical beams; arch springings on the left and right of the corrugated steel plates are fixedly arranged on the two adjacent rows of lower vertical beams respectively; the corrugation of each corrugated steel plate is in the transverse direction; and the rows of lower vertical beams and the rows of corrugated steel plates form a formed bottom template for pouring the formed concrete top layer. The combined bridge deck of arched corrugated steel plates and concrete is simple in structure, convenient to manufacture and construct and good in structural mechanical property, and can be used for effectively solving the problems existing in the existing bridge deck structure.
Owner:CHANGAN UNIV +1
High-bearing capacity prestressed tubular pile and its production method
ActiveCN1799802AIncrease the bearing areaImprove structural mechanical propertiesShaping reinforcementsEngineeringPre stress
The invention discloses a high bearing capacity prestressed pipe pile and relative producing method. The invention can overcome the thickness limit of wall of present technique via a plurality of filling and de-centering concrete to produce practical pipe pile even sincere post. With the increase of wall thickness of post, the forced surface of pipe pile and the structure mechanical property are improved. The tests prove that: the bearing ability of single post is improved significantly, with strong penetrate ability to rigid stratum and reduced post-explosion condition. The invention has simple process, reliable quality, and better market prospect.
Owner:姜中云
Method for forecasting ultimate bearing capacity of transmission shell under impact actoin of engine
ActiveCN111914358AAccurate Ultimate Carrying CapacityQuickly identify weak spotsGeometric CADDesign optimisation/simulationElement analysisElastic plastic
The invention discloses a method for forecasting the ultimate bearing capacity of a transmission shell under the impact action of an engine, which fully utilizes the advantages of short linear elasticfinite element analysis and calculation period, accurate static safety coefficient prediction structure fracture position and the like to quickly determine a plurality of strength weak positions of the transmission shell. Through elastic-plastic finite element analysis, plastic strain of multiple strength weak positions of the transmission shell is calculated, the minimum torque in the multiple strength weak positions when the plastic strain is equal to the elongation of a material serves as a transmission shell fracture criterion, and the ultimate bearing capacity of the transmission shell is forecasted; due to the fact that the material elongation is plastic strain during structural fracture and has strong correspondence with structural fracture, the limit bearing capacity of the transmission shell is evaluated more accurately and more precisely by adopting the material elongation.
Owner:CHINA FIRST AUTOMOBILE
Sleeve connecting method and product
The invention relates to a sleeve connecting method. A continuous fiber reinforcement fabric sleeve is arranged on components needing to be connected in a sleeving manner, then resin is coated or a resin coating is pasted so that the fabric sleeve is soaked with the resin, or a continuous fiber reinforcement fabric resin prepreg sleeve is arranged on the components needing to be connected in a sleeving manner, and finally a vacuum bag or a plastic sleeve contracting after heating is used for solidification so as to enable the connecting position of the components needing to be connected to be covered with a continuous fiber reinforcement composite material. The invention further discloses a connecting product which is obtained through the above sleeve connecting method and is at least provided with the connecting position covered with the continuous fiber reinforcement composite material. According to the sleeve connecting method and the product, the components needing to be connected serve as mandrels of the final product, the development cost for dies is saved, the advantage that the fabric sleeve is deformable is sufficiently used, connection between the different components can be good, and the components can be connected in a clamping manner; and a load-carrying structure of the composite material of the sleeve acts and can serve as a main load-carrying structure, so that the production cost is reduced, and the process of the product is simplified.
Owner:良程(北京)科技有限公司
Adjustable reinforcing and deviation rectifying method and structure for reducing differential settlement of building
ActiveCN107044142ADelay uneven settlementDesign scienceFoundation engineeringArchitectural engineeringStructural engineering
The invention discloses an adjustable reinforcing and deviation rectifying method and structure for reducing differential settlement of a building. On the basis of reinforcement of the settling building, differential settlement of the building is adjusted by mounting rubber supports in different thicknesses, the method and the structure are scientific in design, reasonable in planning, easy to realize and high in reliability, the structure is excellent in mechanical property, differential settlement of the building can be effectively reduced, adjustment can be performed, that is, in the later building monitoring process, when the condition of differential settlement of the building occurs again, deviation rectification can be performed again by changing the rubber supports.
Owner:NANJING UNIV OF TECH
Box-type lower floating body multi-stand-column-type semi-submersible platform
InactiveCN104029799ACompact structureReasonable structureFloating buildingsAnchoring arrangementsMarine engineeringLarge size
The invention relates to a box-type lower floating body multi-stand-column-type semi-submersible platform. The box-type lower floating body multi-stand-column-type semi-submersible platform comprises a lower floating body. The upper portion of the lower floating body is connected to an upper platform through multiple stand columns. The lower floating body is parallel to the upper platform. The lower surface of the upper platform is parallel to the water surface. The upper surface of the upper platform is provided with a superstructure. A helicopter take-off and landing area is arranged on a deck located on the upper platform. An anchoring system is arranged on the platform. The box-type lower floating body multi-stand-column-type semi-submersible platform is compact and reasonable in structure, convenient to manufacture and install, suitable for deep and far sea environment, and applicable to the large size due to the facts that the lower floating body box-type through and multi-stand-column-type semi-submersible platform is adopted, and the lower floating body is a box-type body and is connected with the upper platform through the stand columns.
Owner:中国船舶重工集团公司第七〇二研究所
Preparation method of anti-seepage water delivery tank of channel
ActiveCN103896521AUniform qualityFlat surfaceConstructionsCeramic shaping apparatusWater deliverySmooth surface
The invention provides a preparation method of an anti-seepage delivery water of a channel, relates to the preparation method of a U-shaped / rectangular water tank for water delivery in irrigation and water conservancy, and is used for solving the problems of rough surface, poor freezing resistance and poor durability of a U-shaped tank and a trapezoid tank which are obtained by the existing preparation method. The preparation method provided by the invention comprises the following steps: 1, preparing raw materials; 2, evenly stirring the raw materials in a stirrer and then pouring into a mould; vibrating the mould of the anti-seepage water delivery tank on a suspension-type vibration platform for finishing the material distribution vibration moulding of the concrete raw materials; 3, transporting the mould carried with a concrete water tank into a curing kiln for steam curing and then transferring the mould from the curing kiln; and 4, demoulding the anti-seepage water delivery tank, thus finishing the preparation of the anti-seepage water delivery tank of a channel. According to the method, the overall vibration treatment of the concrete raw materials in the mould is carried out by adopting the vibration platform, so that the concrete has the advantages of uniform quality, smooth surface and good structural mechanical property and the concrete parameter of the concrete can reach a C50F300 level.
Owner:黑龙江省三北水利科技开发有限责任公司
Fabricated specially-shaped roof structural system and construction method thereof
PendingCN109098338AImprove construction efficiencyGuarantee the quality of the projectBuilding roofsEngineeringStructural system
The invention discloses a fabricated specially-shaped roof structural system and a construction method thereof. The fabricated specially-shaped roof structural system comprises multiple prefabricatedassembling units of independent structures, wherein the multiple prefabricated assembling units are disposed according to a predetermined order; two adjacent prefabricated assembling units are connected in a fabricated manner; each of the prefabricated assembling units comprises a polygonal-structured frame body; a first connection plate and a second connection plate are respectively arranged on apair of opened surfaces of the frame body; the first connection plate and the second connection plate are fixedly connected with the frame body respectively; a filling body is arranged among the first connection plate, the second connection plate and the frame body; the frame body comprises multiple assembling ribbed plates connected end to end; and mounting holes for connection are formed in theassembling ribbed plates. The fabricated specially-shaped roof structural system is reasonable in structural stress and high in structural rigidity; a node can be simplified; an internal force is uniformly distributed, and a spatial effect is obvious; the construction period can be shortened; the weight of the structure is reduced; materials and energy are saved, so the whole construction cost isreduced; and the fabricated specially-shaped roof structural system is high in practicability and worthy of being popularized.
Owner:洪成 +1
Preparation device and preparation method of directional steel fiber reinforced concrete prefabricated component
ActiveCN112025924AEliminate bending resistanceEliminate DirectionalityCeramic shaping apparatusFiber-reinforced concreteSteel fibre
The invention relates to the field of prefabricated type concrete structures, and particularly discloses a preparation device of a directional steel fiber reinforced concrete prefabricated component.The preparation device comprises a bottom supporting frame, the supporting frame is a rectangular metal frame, two first sliding rails in the horizontal direction are arranged on the upper surface ofthe supporting frame, and the two first sliding rails are symmetrically arranged; a coil is arranged on the first sliding rails, pulleys are fixed to the bottom of the coil, and the coil is slidably connected to the first sliding rails through the pulleys; two symmetrically-arranged steel supports are placed at the bottom of the supporting frame, the upper surfaces of the steel supports are located in the internal space of the coil, the steel supports are located between the two first sliding rails, a non-metal formwork is placed on the steel supports and penetrates through the coil, and vibrating rods are arranged on the coil; and a current exchanger is further arranged beside the supporting frame and electrically connected with the coil. The preparation device aims to solve the problem that tensile strength of a concrete matrix is insufficient due to steel fiber random distribution and low unidirectional reinforcement efficiency in an existing steel fiber concrete component.
Owner:TAIZHOU UNIV
Modular space truss structure light semi-submersible suspension cable deep sea net cage
ActiveCN111758641ADiluted unit usage costPossess the function of actively approaching and retractingClimate change adaptationPisciculture and aquariaMarine engineeringStructural engineering
The invention discloses a modular space truss structure light semi-submersible suspension cable deep sea net cage. The net cage is characterized in that a net cage framework is modularly constructed and expanded by truss nodes and truss rod pieces, and comprises a top surface truss, a semi-submersible truss arranged on the top surface truss, and a bottom surface truss; the top surface truss and the bottom surface truss are multilayer trusses in the inner and outer directions and comprise buoyancy adjustable layers and buoyancy non-adjustable layers; the semi-submersible truss comprises a buoyancy adjustable layer; and a plurality of groups of suspension cables are included and are arranged between the top surface truss and the bottom surface truss. The net cage framework is constructed ina modular design mode, the multi-layer truss structure meets the requirement for good strength and safety, the unit use cost of equipment is greatly reduced, and a road is laid for large-scale offshore culture; through active adjustment of buoyancy adjustable points, the top surface truss and the bottom surface truss have the active approaching and folding functions, rapid contraction of the netting and the culture space is achieved, rapid fish collection or transfer is achieved in cooperation with pumping, and external disasters such as storms are avoided.
Owner:深圳埃吉尔海洋科技有限公司
Manufacturing method for ribbed FRP members
InactiveCN103643633AEasy to make and constructFast constructionBridge structural detailsEngineeringUltimate tensile strength
The invention discloses a manufacturing method for ribbed FRP members. The method comprises the following steps: manufacturing basic FRP splicing blocks; forming bolt holes in the basic FRP splicing blocks; placing the basic FRP splicing blocks according to a certain sequence, and mounting bolts or end bolts in the bolt holes of the adjacent basic FRP splicing blocks; regularly arranging glue injection nozzles in gaps between the adjacent basic FRP splicing blocks, and performing edge sealing processing for the peripheries of the gaps at splicing positions of the adjacent basic FRP splicing blocks; injecting glue into the gaps in the splicing positions of the adjacent basic FRP splicing blocks through the glue injection nozzles; after the glue is solidified, dismantling or retaining the bolts and end bolts; after the glue is fully solidified and reach a certain strength, forming horizontal through holes in FRP longitudinal plate ribs formed by the adjacent basic FRP splicing blocks. The ribbed FRP members in size is not limited by sizes of the basic FRP splicing blocks, and can be freely spliced according to the actual size required by the construction site, so that the advantages that manufacturing and construction are simple and convenient, the construction speed is fast, the structural mechanics performance is excellent and the economic performance is considerable are achieved.
Owner:黄海林
Multifunctional protective material for space environment of space station and preparation method thereof
InactiveCN103774066AImprove mechanical propertiesImprove structural mechanical propertiesSpace environmentCarbon nanotube
The invention discloses a multifunctional protective material for a space environment of a space station. On the basis of a carbon nano tube array, the protective material is heated and melted through a metal material placed on the surface of the array or liquid metal or a liquid polymer base material is fully filled into a gap between carbon nano tubes by an infiltrating liquid polymer material poured on the surface of the array and using capillary action and then solidified. In addition, a preparation method of the protective material is also disclosed. The multifunctional protective material has high mechanical property on the basis of a single carbon nano tube, and the carbon nano tubes are oriented in the same direction, so that the simultaneously filled metal or polymer material plays a role of enhancing structural mechanical properties. The composite material has high mechanical property, and is a good material for preventing fragments, and a high-radiation protection material which is subsequently filled into the carbon nano tube also can play a good role of preventing high-energy particle radiation in a space. Thus, the material has the function of simultaneously protecting a plurality of space environments.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
Propeller blade with piezoelectric damping function for ship and preparation method thereof
ActiveCN108466686AWith piezoelectric damping functionImprove structural mechanical propertiesRotary propellersDomestic articlesComposite propellerDamping function
The invention discloses a propeller blade with a piezoelectric damping function for a ship and a preparation method thereof. The propeller blade is prepared from, by mass, 80-120 parts of piezoelectric damping composite cores and 120-200 parts of fiber-reinforced thermoplastic composite prepreg coating layers; and the piezoelectric damping composite cores are prepared from, by mass, 5-8 parts of piezoelectric ceramic powder, 0.05-0.09 part of carbon nanotube and 100 parts of thermoplastic polymers which are heated, mixed, and then demoulded at the normal temperature. Through the co-curing forming process of the piezoelectric damping composite cores and the fiber-reinforced thermoplastic composite prepreg coating layers, the composite propeller has the piezoelectric damping function and excellent overall structure mechanical performance, the vibration-reducing and noise-reducing performance of the composite propeller can be remarkably improved, and the problem that due to the underwateradded mass inertia force effect, vibration noise of a stern flow field of an existing marine composite propeller is large can be effectively solved.
Owner:HARBIN INST OF TECH AT WEIHAI
Parallel type underwater vectored thruster
InactiveCN105836081AIncrease flexibilityIncrease stiffnessUnderwater vesselsUnderwater equipmentUnderwaterEngineering
A parallel type underwater vectored thruster mainly comprises a machine frame, a turning machine and three movement branch chains for connecting the machine frame with the turning machine. Each movement branch chain is composed of a lower connection rod, a middle connection rod and an upper connection rod, wherein the lower connection rod and the machine frame are connected through a rotary pair or a sphere pair; the lower connection rod and the middle connection rod are connected through a rotary pair or a sphere pair; the middle connection rod and the upper connection rod are connected through a rotary pair; and the upper connection rod and the turning machine are connected through a rotary pair or a sphere pair. The three movement branch chains are connected with one another through three coupling connection rods and one center connection rod, one end of each coupling connection rod is fixedly connected with the middle connection rod of the corresponding movement branch chain, and the other end of each coupling connection rod is connected with the center connection rod through a rotary pair. Two-freedom-degree rotation of the turning machine relative to the machine frame can be achieved, the parallel type underwater vectored thruster has the advantages of being small in size, large in rigidity, high in precision, large in rotary working space and the like, and the parallel type underwater vectored thruster can be widely applied to ship thrust systems.
Owner:褚宏鹏
Barrel type paper folding rebounding mechanism containing interval structure
InactiveCN111173870AIncrease elasticityImprove structural resilienceLow internal friction springsStructural engineeringMechanical engineering
The invention discloses a barrel type paper folding rebounding mechanism containing an interval structure. The barrel type paper folding rebounding mechanism is formed by folding planar materials according to specifically-designed folds and has certain rigidity and elasticity, and when the barrel type paper folding rebounding mechanism is axially extruded, the barrel type paper folding reboundingmechanism generates compression deformation in the axial direction, and meanwhile generates rebounding force. The rebounding mechanism is novel in structure, easy and convenient to manufacture, low incost, good in mechanical performance and convenient to transport.
Owner:ZHEJIANG UNIV
PBL stiffening rectangular steel tube concrete space truss
InactiveCN103726612ASimple structureReasonable designLoad-supporting elementsMechanical propertySteel tube
The invention discloses a PBL stiffening rectangular steel tube concrete space truss. The concrete space truss comprises a top bracing and a bottom bracing arranged just below the top bracing, wherein the top bracing and the bottom bracing are distributed in parallel; the top bracing comprises a plurality of top chords and a plurality of upper connection rods connected with each two adjacent top chords; the bottom bracing comprises a plurality of bottom chords and a plurality of lower connection rods connected with each two adjacent bottom chords; the plurality of top chords and the plurality of bottom chords are distributed in a staggered manner; each bottom chord is fixedly connected with two top chords at the left side and the right side above through a plurality of web members; the plurality of top chords and the plurality of bottom chords are PBL stiffening chords; each PBL stiffening chord comprises a square steel tube I, four PBL stiffening plates and an inner-pipe concrete structure. The concrete space truss is simple in structure, convenient to process, fabricate and construct and excellent in structural mechanical property, and has a good using effect, and a plurality of problems of an existing truss structure can be effectively solved.
Owner:CHANGAN UNIV
Pre-tensioning method broken-line reinforcement idler wheel bending device shaped like Chinese character ''fei''
ActiveCN108643581AIncrease bend radiusAvoid inflection point kink effectBuilding material handlingChinese charactersPre stress
The invention relates to a pre-tensioning method broken-line reinforcement idler wheel bending device shaped like a Chinese character ''fei''. The pre-tensioning method broken-line reinforcement idlerwheel bending device comprises an idler wheel bending device shaped like the Chinese character ''fei'', a mounting base, an anchor bolt and a connecting device connecting the idler wheel bending device shaped like the Chinese character ''fei'' with the mounting base, wherein the idler wheel bending device shaped like the Chinese character ''fei'' comprises a supporting pipe, idler wheels and fixing bolts; the supporting pipe is a round pipe, a base mounting blind hole connected with the upper end of a connecting rod is formed in the bottom of the supporting pipe, and a row of n mounting holesthrough which screws of the fixing bolts penetrate are formed in the upper part of the supporting pipe; and grooves are formed in the middles of the idler wheels, circular holes are formed in the centers of the cross sections of the idler wheels, and idler wheel spacer bushes are installed in the circular holes in a sleeved mode. In the state of installation and use, the screws of the fixing bolts penetrate through the mounting holes in the round pipe, and the idler wheels are installed at the two ends of the screws correspondingly in a sleeving mode. The idler wheels are locked by the head portions of lock nuts and the fixing bolts, and the round pipe and the two rows of idler wheels form a shape like the Chinese character ''fei''. The bending device can avoid the bending point and breaking point effect, protects pre-stressed ribs from being bitten or indented, has convenient construction and good structural mechanical properties, and can prevent the pre-stressed ribs from slipping out.
Owner:LIUZHOU OVM MASCH CO LTD
Hip joint replacement prosthesis
ActiveCN106913398AAvoid waste of failurePrevents sinking and spinningJoint implantsTissue regenerationFemoral stemFemoral neck
The invention relates to a hip joint replacement prosthesis. The hip joint replacement prosthesis comprises a femoral stem (1) and a femoral neck (2). The hip joint replacement prosthesis is characterized in that the tail end of the lower part of the femoral neck (2) is formed by two parts, one part is an elastic barb (4) and the other part is a cylindrical object (5), and an interval gap (6) is arranged between the elastic barb (4) and the cylindrical object (5). The head of the femoral stem (1) is internally provided with an L-shaped hole (7). The lower part of the femoral neck (2) is plugged in the L-shaped hole (7), and the elastic barb (4) is hooked and clamped in a horizontal hole (9) of the L-shaped hole (7). The surface of the lower part of the femoral stem (1) is attached with raised edges (11) made of a hierarchical porous material. The hip joint replacement prosthesis is reasonable in structure design, and has relatively high connection stability and biocompatibility after being implanted.
Owner:CHONGQING RUNZE PHARM CO LTD
Modularized lifting transverse-moving type parking equipment
InactiveCN103590639AImprove structural mechanical propertiesEasy to assembleParkingsElectric machinerySecondary layer
The invention discloses modularized lifting transverse-moving type parking equipment which comprises a framework structure. The framework structure is provided with a plurality of layers of car carrying spaces, a car carrying plate is arranged at the bottom of each layer of car carrying space, lifting devices for enabling the car carrying plates to ascend and descend are arranged on the second layer of car carrying space and the spaces above the second layer of car carrying space, the first layer of car carrying space is composed of cross beams, longitudinal beams and foundation segmented columns, and cross beam and longitudinal beam connecting seats A are arranged on the rod bodies A of the foundation segmented columns. The second layer of car carrying space and the spaces above the second layer of car carrying space are respectively composed of cross beams, longitudinal beams and standard segmented columns, and cross beam and longitudinal beam connecting seats B are arranged on the rod bodies B of the standard segmented columns. Connecting sleeves B are arranged on the two end portions of each standard segmented column, and connecting sleeves A matched and connected with the connecting sleeves B are arranged on the upper end portions of the foundation segmented columns. Transverse-moving systems enabling the car carrying plates to move transversely are arranged in all the car carrying spaces of the framework structure. The modularized lifting transverse-moving type parking equipment can assemble the body framework structure in a modularized mode, motors needed in the lifting and transverse-moving movement are reduced, and the structure is more reasonable.
Owner:SICHUAN XINGSHIFA NEW BUILDING MATERIALS
Heat-insulation weather-resistant coextru-lamination totally-coated metal profile biomimetic material
ActiveCN105569494AImprove mechanical propertiesEasy to useWindow/door framesWing framesCo extrusionBiomimetic materials
The invention discloses a heat-insulation weather-resistant coextru-lamination totally-coated metal profile biomimetic material. The material comprises a metal bone profile, a main material composite inner layer and a main material weather-resistant skin layer; the main material composite inner layer is arranged outside the metal bone profile in a totally-coating mode, and the main material weather-resistant skin layer is integrally formed outside the main material composite inner layer in a co-extrusion mode; the cross section of the metal bone profile comprises a metal frame and a metal cover plate, and the metal frame is composed of a rectangular cavity and at least one special-shaped cavity in the middle; full filling is conducted on the exterior of the main material composite inner layer and the exterior of the metal bone profile, and multiple dovetail compomers are formed by the main material composite inner layer and the metal bone profile; the main material composite inner layer is provided with a composite material cover plate, a composite material frame body and a composite material baffle. According to the heat-insulation weather-resistant coextru-lamination totally-coated metal profile biomimetic material, the metal bone profile is totally coated with a composite material in an extruded mode, the heat insulation property reaches the level 6-11, the structural mechanical property is improved by multiple times, the slow fading or even unfading time is 10 years or above, and the linear expansion coefficient reaches 23*10<-5> mm / mm DEG C.
Owner:CCLINK MATERIALS INC
Artificial shoulder joint prosthesis
InactiveCN106880424AMeet a variety of functional needsLose weightJoint implantsShoulder jointsBiocompatibility TestingShoulder joint prosthesis
The invention relates to an artificial shoulder joint prosthesis. The artificial shoulder joint prosthesis comprises a humeral head (1) and a humeral handle (2), and is characterized in that a round hole (3) is arranged at the upper part of the humeral handle (2), wherein the lower handle body of the humeral handle (2) is composed of a body (4) and a coating layer (5) arranged at the outer layer of the body (4), and the coating layer (5) is made of a multi-level-hole material; through holes (6) are arranged in the handle body. The artificial shoulder joint prosthesis is reasonable in structural design, the selected materials are suitable and controllable and are uniform in height, after being implanted into the human body, the artificial shoulder joint prosthesis is high in connection stability and biocompatibility, and thus the postoperative quick recovery is facilitated.
Owner:CHONGQING RUNZE PHARM CO LTD
High-strength electromagnetic pulse protection structure material
PendingCN112318950AImprove structural mechanical propertiesControllability of strong electromagnetic absorption performanceLamination ancillary operationsSynthetic resin layered productsHoneycombEngineering
The invention relates to a high-strength electromagnetic pulse protection structure material which is composed of an electromagnetic protection layer and skin layers covering the upper surface and thelower surface of the electromagnetic protection layer. The electromagnetic protection layer is obtained by superimposing multiple layers of lattice structure electromagnetic protection layers; each lattice structure electromagnetic protection layer is composed of a lattice structure material obtained by honeycomb lattice distribution of structure units with tip protrusions and an electromagneticabsorption loss coating layer coating the lattice structure material, and the mass percentages of the electromagnetic absorption loss coating layer in the lattice structure electromagnetic protectionlayers are gradually increased from top to bottom and are distributed in a gradient mode. An internal gap of the interior of the electromagnetic protection layer is filled with a light high-wave-transmission resin-based reinforcing material. According to the high-strength electromagnetic pulse protection structure material provided by the invention, the thickness / total thickness of each electromagnetic protection layer is easier to accurately control under the room temperature curing condition, the controllability of the electromagnetic absorption performance is stronger, and meanwhile, the structural mechanical property of the material is improved by pouring the light high-wave-transmission resin-based reinforcing material.
Owner:CHINA SHIP DEV & DESIGN CENT
Buckling restrained brace provided with embedded steel reinforcement bars and wrapped with fiber pipes
InactiveCN105672511ASimple structureEasy to manufacture and installShock proofingFiberBuckling-restrained brace
A buckling-constrained support with embedded steel bars and outer-wrapped fiber tubes belongs to a new type of energy-dissipating shock-absorbing component, which can be applied to structural shock absorption and engineering reinforcement. In the present invention, a plurality of light round steel bars are straightened, aligned at both ends, combined into a certain cross-sectional shape, fiber cloth is wound around the end of the combined steel bar, and the outer surface of the combined steel bar between the fiber cloths is coated with silica gel material, and after the silica gel material is dried, Penetrate the constraining fiber tube, put the end reinforcement tube on the constraining fiber tube, and fix the two ends of the composite steel bar on the two end plates. Among them, at one end of the support, the constrained fiber tube is bonded to the end reinforcing tube through structural glue; at both ends of the support, two end reinforcing tubes are welded to the two end plates respectively. A buckling-constrained support with embedded steel bars and outer-wrapped fiber tubes has the advantages of strong energy dissipation, small cross-sectional size, light weight, flexible cross-sectional form, simple structure, convenient processing, and less waste, and has a wide range of applications, which can effectively solve the current structural problems There are many problems in shock absorption and engineering reinforcement.
Owner:HENAN POLYTECHNIC UNIV
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