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30results about How to "Improve the ability to resist instability" patented technology
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Multilayer grating bearing cylinder and preparation method thereof
ActiveCN104608915AImprove stabilityImproves buckling stabilityFuselage framesWeight reductionGratingEngineering plastic
The invention discloses a multilayer grating bearing cylinder and a preparation method thereof. The multilayer grating bearing cylinder is formed by nesting at least two single-layer grating cylinders, and the densities of the meshes of the adjacent single-layer grating cylinders are different. The preparation method for the multilayer grating bearing cylinder made from a composite material comprises the following steps: producing a wood pattern for casting a soft mode, producing a silicon rubber soft mode, assembling a mould, winding the soft mode in an assistance manner, carrying out vacuum bag moulding, demoulding and carrying out after-treatment, and integrally moulding the multilayer grating bearing cylinder; or preparing the single-layer grating cylinders according to the steps, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder. The preparation method for the multilayer grating bearing cylinder made from metal or engineering plastic comprises the following steps: preparing a casting mould for the disassembly components of the single-layer grating cylinders, melting and casting, welding, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder; or moulding in one step by a 3D printing technology. The multilayer grating bearing cylinder has the characteristics of good structural stability, light mass, high mechanical properties, difficulty of structural overall buckling instability, simple and practicable preparation method, and low cost.
Owner:NAT UNIV OF DEFENSE TECH
Crane and super hoisting device thereof
Owner:ZOOMLION HEAVY IND CO LTD
Inner truss type steel tube concrete L-shaped column and construction method thereof
InactiveCN105113717AReduce effective widthImprove bearing capacityStrutsBuilding material handlingSteel platesSteel tube
The invention discloses an inner truss type steel tube concrete L-shaped column and a construction method thereof. The inner truss type steel tube concrete L-shaped column comprises a wrapping steel tube, filling concrete and an inner truss; the inner truss comprises T-shaped steel, inner truss subunits and T-shaped steel web lacing bars; the inner truss subunits are formed by welding the T-shaped steel; the T-shaped steel web lacing bars are longitudinally welded in a T-shaped steel web and the inner truss subunits along the T-shaped steel in a stacked manner; the T-shaped steel and the inner truss subunits are positioned at edges and corners of a quadrangle; the cross section of the wrapping steel tube is inversely L-shaped or n-shaped; and the wrapping steel tube is fixedly welded with flange plates of the T-shaped steel. The inner truss is tensioned at a corner of a special-shaped steel tube, so that effective width of a steel plate is reduced, a fulcrum is provided for deformation of the steel plate out of a plane, anti-unsteady capability of the steel plate can be improved, a hooping effect of the column is improved, and the bearing capacity of a steel tube concrete special-shaped column is improved obviously.
Owner:HOHAI UNIV
Diffusion welding multilayer structure diaphragm capsule
The invention is a diffusion welding multilayer structure diaphragm capsule, belonging to the field of diaphragm capsule manufacturing. By adopting the methods of diffusion welding, machining and shaping, the manufacturing of diaphragm capsule in the invention can be realized. The main procedures include thin wall blank preparation, surface cleaning, surface modified treatment, welding-stopping treatment, diffusion welding, machining, shaping and the like. Compared with the multilayer structure diaphragm capsule manufactured by other methods, the multilayer structure diaphragm capsule manufactured by the invention has the advantages of fine fatigue property (above 1 million times), strong pressurization performance, adjustable rigidity, high compression ratio (higher than 80%), capability of micromation of inner holes, high precision of geometric dimensions, strong destabilization resistance, precise and controllable weldingline profile, adjustable width of weldingline and the like. By using the invention, the diaphragm capsule in the shape of circle, square and other shapes can be manufactured, and can serve as a compensation element of displacement and angle in hydraulic, barometric, transferring pipeline installation, an elastic compensation element and a pore damping element as well as a measuring element for a manometer and an altimeter; besides, the diaphragm capsule can be also used as a heat transferring finned tube for air conditioning, refrigeration and other devices as well as a metal capsule of separating gas or liquid for an accumulator and a storage box. The invention can provide multilayer structure diaphragm capsule products with fine performance for related industries.
Owner:北京智创联合科技股份有限公司
Repairable multistage energy dissipation dry-type mixed fabricated type concrete shear wall
ActiveCN108104308ASimple forceReliable forceWallsProtective buildings/sheltersHigh strength concreteRebar
The invention discloses a repairable multistage energy dissipation dry-type mixed fabricated type concrete shear wall. High-strength steel pipes are embedded in prefabricated concrete shear wall edgecomponents and are filled with high-strength concrete; the concrete shear wall edge components are connected through multistage energy dissipation pieces, the multistage energy dissipation pieces areconnected with the pre-buried high-strength steel pipes through end plate bolts, and middles of concrete shear wall bodies are connected through post-tensioning no-bonding prestress thread rebars; andthe multistage energy dissipation pieces are composed of top plates, bottom plates, steel pipe concrete bar bodies provided with constraint steel pipes, connecting plates and energy dissipation steelplates provided with diagonal stiffening ribs, only the energy dissipation steel plates and the connecting plates are connected through high-strength bolts, and other rod pieces are connected throughwelding. According to the repairable multistage energy dissipation dry-type mixed fabricated type concrete shear wall, dry-type connecting without cast-in-place concrete or grouting construction is achieved, meanwhile, the repairable multistage energy dissipation mixed fabricated type concrete shear wall is built, the working mechanism is clear, anti-seismic performance is good, the technical economic benefits are remarkable, and the repairable multistage energy dissipation dry-type mixed fabricated type concrete shear wall is especially suitable for being applied and promoted in an earthquake fortification area.
Owner:NANJING UNIV OF TECH
Marine composite superstructure bulkhead and preparation method thereof
ActiveCN111791545AHigh strengthLow densityClimate change adaptationSynthetic resin layered productsAdhesive cementGlass fiber
The invention relates to a marine composite superstructure bulkhead, which comprises a protective sandwich structure and a reinforcing structure. The protective sandwich structure comprises a lower-layer skin, an ultra-high molecular weight polyethylene armor plate, a PVC foam layer and an upper-layer skin, which are sequentially arranged from bottom to top, and all layers are bonded into a wholethrough an adhesive. The reinforcing structure comprises a bottom glass fiber reinforced plastic layer, a surface glass fiber reinforced plastic layer, PVC foam reinforced ribs and a glass fiber reinforced skin. The bottom glass fiber reinforced plastic layer is laid on the outer surface of the lower-layer skin of the protective sandwich structure; the surface glass fiber reinforced plastic layeris laid on the outer surface of the upper-layer skin, the PVC foam reinforced ribs are installed on the outer surface of the surface glass fiber reinforced plastic layer, and the glass fiber reinforced skin wraps the surfaces of the PVC foam reinforced ribs. The protective sandwich structure and the reinforcing structure are formed by adopting a vacuum flow guide integrated forming process. The marine composite superstructure bulkhead can meet the requirement on the impact load of splashed water spray, penetration of cubic fragments with a speed of 100-1500 m / s and a mass of 1-20 g can be defended, and the electromagnetic stealth performance is: the reflectivity within a range of 2-8 GHz is lower than -10 dB, and the reflectivity within the range of 8-18 GHz is lower than -18 dB.
Owner:NAVAL UNIV OF ENG PLA
Method and tool for checking forming quality of cementing surface of double-curved-surface variable-thickness aluminum honeycomb
ActiveCN112793193AImprove the ability to resist instabilitySolve the problem of slippageDomestic articlesAluminum honeycombMechanical engineering
The invention relates to a method and a tool for checking the forming quality of a cementing surface of a hyperboloid variable-thickness aluminum honeycomb. The method comprises the following steps: laying a lower skin on a cementing mold; laying a lower plate-core verification film on the lower skin; laying lower woven cloth along the surface of the outer contour of the lower plate-core verification film, laying upper woven cloth on the cementing area of a rear edge strip, a first rib, a second rib, a beam and an upper skin, laying an upper plate-core verification film along the surface of the outer contour of the upper woven cloth, laying the upper skin on the upper plate-core verification film, carrying out vacuum packaging on the whole aluminum honeycomb structural part, putting the aluminum honeycomb structural part into an autoclave, after high-temperature pressurization for a period of time, opening the autoclave, taking out the honeycomb structural part, and separating out the upper plate-core verification film and the lower plate-core verification film; observing the depth degree of extrusion traces on the upper plate-core verification film and the lower plate-core verification film to verify the forming quality of the cementing surface of the aluminum honeycomb, the situation that the skin is damaged due to instability and slippage of the aluminum honeycomb is prevented, and the matching precision and verification comprehensiveness are improved.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST
Vibration active control type axial plunger pump with magnetic bearings
ActiveCN110863965AImprove stabilityImprove the ability to resist instabilityShaftsEngine componentsMagnetic bearingDrive shaft
The invention discloses a vibration active control type axial plunger pump with magnetic bearings. The vibration active control type axial plunger pump with the magnetic bearing comprises a shell, a stepped driving shaft, a swash plate, a plunger moving assembly, a cylinder body, a radial cylinder body magnetic control outer ring, a first radial permanent magnet bearing, a second radial permanentmagnet bearing and an axial positioning magnetic control bearing, wherein the radial cylinder body magnetic control outer ring acquires a vibration signal in real time through a displacement sensor, the radial cylinder body magnetic control outer ring is adjusted according to the vibration, the first radial permanent magnet bearing and the second radial permanent magnet bearing realize a suspension state of the stepped driving shaft through the principle of the same magnetic repulsion, and the axial positioning magnetic control bearing regulates and controls electromagnetic force by controlling the magnitude of current so as to ensure the axial positioning of the driving shaft. According to the vibration active control type axial plunger pump with the magnetic bearings and the control method thereof, the vibration of the cylinder body is monitored and controlled in real time while the driving shaft is suspended, friction among the bearings and the driving shaft is reduced, the dynamicstability of the cylinder body is improved, and the stability and reliability of the axial plunger pump are improved.
Owner:卓为驱动技术(南通)有限公司
Non-Newtonian fluid impregnated grid enhanced hydrogen storage pressure vessel structure and process
ActiveCN112344200AImprove impact resistanceImprove structural stabilityVessel mounting detailsVessel manufacturingGas cylinderResin matrix
The invention discloses a non-Newtonian fluid impregnated grid enhanced hydrogen storage pressure vessel structure and process. The pressure vessel structure comprises a fiber reinforced resin matrixcomposite material, a grid structure reinforcing layer, a fiber protective layer and anti-collision materials arranged at end sockets at the two ends which are sequentially arranged on the outer sidesurfaces of a gas cylinder lining, an open end and a tail end of a metal gas cylinder outwards in a prestress winding mode, wherein the whole gas cylinder container structure is reinforced through thegrid structure reinforcing layer, fibers used for forming the grid structure reinforcing layer are impregnated with non-Newtonian fluid, gum dipping winding forming is carried out after drying treatment, soft grid structure molds at a cylinder body and two ends of the end sockets are molded and manufactured by utilizing a casting molding method, then adhering the soft grid structure molds to theouter surface of a gas cylinder wound with a fiber reinforced resin matrix composite material in a common adhering manner, and then molding a grid structure reinforcing layer. The prepared hydrogen storage pressure vessel has the characteristics of high rigidity, impact resistance, light weight and low cost.
Owner:ZHEJIANG UNIV
Reinforced load-bearing cylinder with open holes in the skin
ActiveCN109080852BIncreased tangential bending stiffnessImprove radial stiffnessCosmonautic vehiclesCosmonautic partsSkin openingStructural engineering
The invention provides a diaphragm opening stiffened bearing cylinder, which comprises a cylinder body and an end frame. The cylinder comprises a lattice rib and an open skin; The end frame comprisesan upper end frame part and a lower end frame part; A lattice rib is arrange on that inner side of the open skin; An upper end frame part is arrange on that top of the cylinder body; The lower end frame part is arranged at the bottom of the barrel. A circular through hole is arranged in the area corresponding to the rhombus area of the open skin, the skin material without radial support area is removed, and a part of the skin is reserved for lifting the tangential bending rigidity of the mesh rib, and the radial rigidity of the mesh rib stiffened bearing cylinder with the mesh rib with a stripsection is improved. The invention can greatly improve the anti-destabilization ability of the diaphragm opening stiffened bearing cylinder, and has strong universality.
Owner:SHANGHAI SATELLITE ENG INST
Multi-layer grid bearing cylinder and preparation method thereof
ActiveCN104608915BImprove stabilityImproves buckling stabilityFuselage framesWeight reductionGratingBuckling instability
The invention discloses a multilayer grating bearing cylinder and a preparation method thereof. The multilayer grating bearing cylinder is formed by nesting at least two single-layer grating cylinders, and the densities of the meshes of the adjacent single-layer grating cylinders are different. The preparation method for the multilayer grating bearing cylinder made from a composite material comprises the following steps: producing a wood pattern for casting a soft mode, producing a silicon rubber soft mode, assembling a mould, winding the soft mode in an assistance manner, carrying out vacuum bag moulding, demoulding and carrying out after-treatment, and integrally moulding the multilayer grating bearing cylinder; or preparing the single-layer grating cylinders according to the steps, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder. The preparation method for the multilayer grating bearing cylinder made from metal or engineering plastic comprises the following steps: preparing a casting mould for the disassembly components of the single-layer grating cylinders, melting and casting, welding, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder; or moulding in one step by a 3D printing technology. The multilayer grating bearing cylinder has the characteristics of good structural stability, light mass, high mechanical properties, difficulty of structural overall buckling instability, simple and practicable preparation method, and low cost.
Owner:NAT UNIV OF DEFENSE TECH
A New Bellows Sealed Ball Valve
ActiveCN105697808BRealize two-way sealingRealize automatic pressure reliefPlug valvesValve housingsVALVE PORTValve seat
The invention discloses a novel sealing ball valve with corrugated pipes. A valve seat assembly A and a valve seat assembly B are arranged on the two axial sides of a valve body respectively and respectively comprise a valve seat body, each valve seat body is provided with a sealing ring forming a sealing pair with a ball body, two corrugated pipes, namely the corrugated pipe I and the corrugated pipe II are installed on the outer ring of each valve seat body in a sectional mode and a sleeving mode and are welded to the two sides of a holder respectively, the other end of each corrugated pipe I is welded to the step surface on the outer ring of the corresponding valve seat body, the other end of each corrugated pipe II is welded to a valve seat check ring, the inner diameters of the corrugated pipe I and the corrugated pipe II of the valve seat assembly A are greater than the inner diameter of the sealing ring of the valve seat assembly A, the inner diameter of the corrugated pipe I of the valve seat assembly B is smaller than the inner diameter of the sealing ring of the valve seat assembly B, and the inner diameter of the corrugated pipe II of the valve seat assembly B is greater than the inner diameter of the sealing ring of the valve seat assembly B. The novel sealing ball valve has the beneficial effect of being applicable to severe working conditions, and valve seats on one side or both sides can realize the bidirectional sealing function.
Owner:JIANGSU SHENTONG VALVE
Local strength-varying design method for automobile parts
ActiveCN108441604AIncrease the level of energy absorptionImprove the ability to resist instabilityFurnace typesHeat treatment process controlLaser quenchingEnergy absorption
A local strength-varying design method for automobile parts includes the steps of: 1) determining the impact direction of an automobile part and calculating the cross section equivalent width, material thickness and base material yield strength, which are vertical to the impact direction, of the part; 2) determining whether the part has a rib being vertical to the impact direction or not, if true,performing laser quenching to the rib; 3) if the part has a rib in parallel with the impact direction, reinforcing the rib, or performing 360-degree laser quenching in a cross section, being verticalto the impact direction, of the part, thus forming a plurality of strength-varying rings, which are distributed on the part at intervals; 4) performing entire tempering thermal treatment to the part.The method can induce elastic-plastic buckling deformation of the part and also improve energy absorption level and anti-instable capability of the part. In the method, an inner-concave-outer-convexperiodical deformation mode is replaced by an all-concave deformation mode, so that axial crushing plastic deformation is more stable.
Owner:易清汽车安全系统(苏州)有限公司
Bellow-type mixed medium vibration isolating and absorbing unit
InactiveCN101701615BLower natural frequencyFix the leakVibration dampersCarrying capacityProduct gas
The invention provides a bellow-type mixed medium vibration isolating and absorbing unit comprising a bellow. Both ends of the bellow are fixedly connected to an upper end plate and a lower end plate to form a bellow container; the bellow container is arranged in a pilot sleeve; the bottom of the bellow container is fixedly connected with the pilot sleeve; a gap is reserved between the side wall of the bellow and the side wall of the pilot sleeve; the bellow container is provided with an opening; a liquid-solid mixed medium which consists of elastic unit bodies and liquid is filled in the bellow container; the top of the pilot sleeve is fixedly connected with a limit disc for preventing the upper end plate from slipping; an upper connecting rod is connected with the upper end plate after passing through the limit disc; and a lower connecting rod is connected with the bottom of the pilot sleeve. By the scheme of the invention, the leakage problem of liquid and gas is thoroughly avoided. The mixed medium vibration isolating and absorbing unit has the advantages that the carrying capacity is high, the natural frequency is low, the structure is simple, the use and the maintenance are convenient and the vibration isolating and absorbing performance can be flexibly regulated by increasing and decreasing the number of the elastic unit bodies.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Stiffening bearing type outer-frame-free construction platform for residential building and construction method
PendingCN112227691ANode structure is simpleImprove construction efficiencyScaffold connectionsScaffold accessoriesSteel tubePipe
The invention discloses a stiffening bearing type outer-frame-free construction platform for a residential building and a construction method. The stiffening bearing type outer-frame-free constructionplatform is mainly composed of a triangular truss bearing structure, high-strength bolts, fixing sleeves, angle steel bearings and triangular stiffening ribs. The protection construction platform isflexible to assemble and disassemble and high in assembling degree, the frame type scaffold can be inserted into the round steel pipe connecting pieces in a construction site, the structure is installed by screwing down the bolts, then the whole protection construction platform is hoisted to a preset position to be inserted into the fixing sleeve, the overall consumable amount is reduced, and safety is high. Meanwhile, the protection construction platform is clear in stress, the bearing capacity is remarkably improved, and the bolt sleeve is creatively welded to the hole opening position of the steel pipe to perform stiffening treatment on the local part of the steel pipe. The construction protection platform is simple in structure assembly, high in construction efficiency, high in safetyand low in construction cost, and is a novel fabricated outer-frame-free protection construction platform suitable for a civil residential building of a current shear wall system.
Owner:CCCC FOURTH HIGHWAY ENG +1
Method for calibrating the quality of the bonding surface of the hyperboloid variable thickness aluminum honeycomb and its calibrating tool
ActiveCN112793193BImprove the ability to resist instabilitySolve the problem of slippageDomestic articlesVariable thicknessAluminum honeycomb
The invention relates to a method and a tool for verifying the forming quality of the glued surface of a hyperboloid variable-thickness aluminum honeycomb. Lay a lower woven cloth on the outer contour surface of the board-core verification membrane, and lay an upper woven cloth on the trailing edge strip, the first rib, the second rib and the gluing area between the beam and the upper skin, along the outer contour of the upper woven cloth Lay the upper plate-core verification film on the surface, lay a skin on the upper plate-core verification film, vacuum-package the aluminum honeycomb structure as a whole and put it into an autoclave. After a period of high temperature and pressure, open the autoclave. Take out the honeycomb structure, disassemble the upper plate-core verification film and the lower plate-core verification film; observe the compression marks on the upper plate-core verification film and the lower plate-core verification film The degree of depth is used to verify the forming quality of the bonding surface of the aluminum honeycomb, to prevent the aluminum honeycomb from slipping and damaging the skin, and to improve the matching accuracy and the comprehensiveness of the calibration.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST
Diaphragm opening stiffened bearing cylinder
ActiveCN109080852AIncreased tangential bending stiffnessImprove radial stiffnessCosmonautic vehiclesCosmonautic partsEngineeringBending stiffness
The invention provides a diaphragm opening stiffened bearing cylinder, which comprises a cylinder body and an end frame. The cylinder comprises a lattice rib and an open skin; The end frame comprisesan upper end frame part and a lower end frame part; A lattice rib is arrange on that inner side of the open skin; An upper end frame part is arrange on that top of the cylinder body; The lower end frame part is arranged at the bottom of the barrel. A circular through hole is arranged in the area corresponding to the rhombus area of the open skin, the skin material without radial support area is removed, and a part of the skin is reserved for lifting the tangential bending rigidity of the mesh rib, and the radial rigidity of the mesh rib stiffened bearing cylinder with the mesh rib with a stripsection is improved. The invention can greatly improve the anti-destabilization ability of the diaphragm opening stiffened bearing cylinder, and has strong universality.
Owner:SHANGHAI SATELLITE ENG INST
A kind of emergency repair tower body of transmission line
The invention provides a transmission line urgent repair tower body which is formed by connecting modularized tower body sections end to end. Each tower body section is formed by splicing corner posts. The transmission line urgent repair tower body is characterized in that each corner post comprises two side boards, wherein an included angle is formed by the two side boards with a post body serving as an axis, bolt holes perpendicular to the post body are formed in the edge of one side board at intervals, and the bolt holes are used for connection between the corner posts. Compared with the prior art, the transmission line urgent repair tower body has the advantages that light weight and modularization are guaranteed, meanwhile the geometric dimension of an urgent repair tower is remarkably increased, the carrying capacity of the urgent repair tower is remarkably improved, the application range is obviously increased, and an effective way is provided for urgent repair of large-load and large-size structures with ultrahigh voltage and the like.
Owner:STATE GRID CORP OF CHINA +2
Process equipment used for large-size bowl-shaped structural part preforming
InactiveCN112453164AImprove the ability to resist instabilityAvoid wrinklingShaping toolsMetal-working feeding devicesMetal forming processStructural engineering
The invention discloses process equipment used for large-size bowl-shaped structural part preforming, and belongs to the technical field of sheet metal forming process equipment. The process equipmentcomprises a hydraulic machine tool, and further comprises a convex die holder, a blank holder, a convex die, a concave die and a material returning device. An upper platform allowing the convex die holder to be fixedly mounted and a lower platform allowing the concave die to be fixedly mounted are arranged on the hydraulic machine tool. The material returning device is arranged in the concave die, the blank holder is arranged beside the convex die holder, an ejector rod for providing pressure for the blank holder is arranged at the top of the blank holder, and a material returning ejector plate used for ejecting a preformed structural part on the material returning device is arranged at the bottom of the material returning device. By means of drawing ribs arranged on the blank holder andthe concave die, flowing materials are delayed to fully release deformation stress, the forming gap between the concave die and the convex die is set to be several times of the thickness of the materials, and wrinkling and cracking of blanks in the forming process can be avoided.
Owner:CAPITAL AEROSPACE MACHINERY
Structure and process of grid-reinforced hydrogen storage pressure vessel impregnated with non-Newtonian fluid
ActiveCN112344200BImprove impact resistanceImprove structural stabilityVessel mounting detailsVessel manufacturingGas cylinderResin matrix
The invention discloses a non-Newtonian fluid impregnated grid reinforced hydrogen storage pressure vessel structure and technology. It includes fiber-reinforced resin-based composite materials that are prestressed and wound on the inner liner of the gas cylinder, the open end of the metal gas cylinder and the outer surface of the tail end, the reinforcement layer of the grid structure, the fiber protection layer and the anti-corrosion protection at the two ends of the head. The entire structure of the gas cylinder container is reinforced with a grid structure reinforcement layer, and the fibers used in the formation of the grid structure reinforcement layer are impregnated with non-Newtonian fluid, dried and then impregnated and wound; firstly, the casting method is used The soft grid structure molds for the cylinder body and the two ends of the head are molded separately, and then bonded to the outer surface of the gas cylinder after winding the fiber reinforced resin-based composite material by joint bonding, and then the grid structure reinforcement layer is formed. The hydrogen storage pressure vessel prepared by the invention has the characteristics of high rigidity, impact resistance, light weight and low cost.
Owner:ZHEJIANG UNIV
Cantilever type river bank bird perching frame and installation and construction method thereof
PendingCN114097655AImprove carrying capacityIncrease the lengthExcavationsBird housingsCantilevered beamEcological environment
A vertical rod is arranged on the basis of the river bank, a left connecting base of the vertical rod is connected with a balance cylinder, a right connecting base of the vertical rod is connected with a frame base of a cantilever beam, a rope tightening bolt of a round pipe joint on the frame base is tied to one end of a steel wire rope, and the other end of the steel wire rope is tied to a hook of a left connector of a trifurcate connector. A lower round pipe joint of the frame base is connected with the end of an oblique curved pipe, the other end of the oblique curved pipe is connected with a lower connector of a three-fork connector, a right connector of the three-fork connector is connected with a straight rod, a steel wire rope is connected with the oblique curved pipe through a supporting rod, and the frame base, the tightened steel wire rope, the upward-warping elastic oblique curved pipe and the supporting rod form a prestressed cantilever beam. And the cable has super-long length, wind load resistance and high bearing capacity. The device has the advantages of being light in structure, attractive in appearance and convenient for water birds to inhabit and feed, and an ecological environment where people and birds are harmonious is created.
Owner:徐紫茜
Inner truss type CFST L-shaped column and its construction method
InactiveCN105113717BReduce effective widthImprove the ability to resist instabilityStrutsBuilding material handlingCarrying capacityFlange
The invention discloses an inner truss-type concrete-filled steel tube L-shaped column and a construction method thereof, wherein the inner-truss-type steel tube concrete L-shaped column comprises outsourcing steel pipes, inner filling concrete and an inner truss; the inner truss comprises T-shaped steel, The inner truss subunit welded by T-shaped steel, and the slivers of the T-shaped steel web in the T-shaped steel web and the inner truss subunit overlapped and welded along the T-shaped steel longitudinally; the T-shaped steel and the inner truss The truss sub-units are located at the corners of the quadrilateral, and the cross-section of the outsourcing steel pipe is Γ-shaped or Π-shaped, and is welded and fixed with the flange plate of the T-shaped steel. In the present invention, the inner truss is tied at the corner of the special-shaped steel pipe, thereby reducing the effective width of the steel plate, providing a fulcrum for the out-of-plane deformation of the steel plate, improving the anti-instability ability of the steel plate and improving the hoop effect of the column, so that the steel pipe The bearing capacity of concrete special-shaped columns is significantly improved.
Owner:HOHAI UNIV
Device based on rubber bladder forming with movable side pressure block and method of use thereof
The invention provides a device with a movable side pressure block based on rubber bladder forming and an application method thereof. The device with the movable side pressure block for a panel veneerand metal plate forming part comprises a base, a mold, a cover plate and a side pressure block. The mold is arranged on the base, the effective mold surface of the mold is consistent to the inner surface of the part, and the cover plate is arranged on the mold to cover the mold so as to clamp a panel veneer; the side pressure block comprises a side pressure block body, a supporting part and a moving part. The upper end surface of the side pressure block is used for overlapping the panel veneer, the supporting part is connected to the side pressure block, the effective molded surface of the supporting part inclines downward to the direction of a bottom plate, the shape of the effective molded surface is matched with the shape of a panel veneer boundary area, and the moving part is connected to the lower end surface of the side pressure block. In a forming process, the side pressure block moves to a direction, far away from the mold, and the panel veneer boundary area is easy to enter into a deformation state as the side pressure block moves, so that the panel veneer is easier to enter into a plastic deformation state, film pasting is facilitated, wrinkling is reduced, and the panelveneer which is formed is pasted fully by a film.
Owner:SHENYANG AEROSPACE UNIVERSITY
Single tooth, biteeth shaped large angle flexible laminated coupler
InactiveCN1287099CReduce stress concentrationImprove the ability to resist instabilityYielding couplingEngineeringMechanical engineering
Owner:王陈彬
Contact integrated buffering and energy absorbing device for rail transit vehicle
ActiveCN114084191AImprove the ability to resist instabilityImprove reliabilityRailway wheel guards/bumpersEnergy absorptionBall bearing
The invention relates to the technical field of passive safety of rail transit vehicles, and in particular relates to a contact integrated buffering and energy absorbing device for a rail transit vehicle. The device comprises a first energy-absorbing mounting seat, a second energy-absorbing mounting seat, a first-stage guide rod, a second-stage guide rod and an energy-absorbing body. A plurality of airbags are evenly arranged on the side wall of the first-stage guide rod, the second-stage guide rod is sleeved with the energy-absorbing body. The guide rods, the airbags and the energy-absorbing mounting seats are matched to realize first-stage buffering and energy absorption, the energy-absorbing body, the second-stage guide rod, the energy-absorbing mounting seats and a steering connecting structure are matched to realize second-stage crushing energy absorption, and meanwhile, the six-degree-of-freedom characteristic of a joint ball bearing is ingeniously utilized; the function that a middle energy-absorbing module moves along with the vehicle in the horizontal direction and the vertical direction is achieved, the longitudinal bearing capacity of the device is effectively enhanced, the anti-instability capacity of the middle vehicle in the train collision process is improved, and the buffering and energy-absorbing device has the advantages of being high in reliability, high in anti-instability capacity and capable of being repeatedly used.
Owner:SOUTHWEST JIAOTONG UNIV
Crane and super hoisting device thereof
Owner:ZOOMLION HEAVY IND CO LTD
A Liquid-Filled Deep Drawing Method for Improving Surface Accuracy of Large Thin-walled Curved Parts
Owner:抚顺三方机械制造有限公司
Single tooth, biteeth shaped large angle flexible laminated coupler
InactiveCN1538084AReduce stress concentrationImprove the ability to resist instabilityYielding couplingMechanical engineeringSingle tooth
Owner:王陈彬
Reinforced composite material fold channel sandwich structure as well as preparation method and application thereof
PendingCN114311873AImprove the ability to resist instabilitySimple structureSynthetic resin layered productsHull panellingsComposite materialCeramic materials
The invention provides a reinforced composite material fold channel sandwich structure and a preparation method and application thereof, and relates to the technical field of composite materials. The coupling enhancement design of the foam and composite material fold channel sandwich structure is adopted, the structure is simple, and preparation is easy; according to the reinforced composite material corrugated channel sandwich structure, the anti-instability capacity of the corrugated core structure is improved in a foam filling mode, meanwhile, the bearing capacity of the reinforced composite material corrugated channel sandwich structure under the unit mass can be remarkably improved by means of the characteristic that foam is light, and the engineering application range and potential of the composite material sandwich structure are improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
A Vibration Actively Controlled Axial Piston Pump with Magnetic Bearings
ActiveCN110863965BImprove stabilityImprove the ability to resist instabilityShaftsEngine componentsMagnetic bearingDrive shaft
The invention discloses a vibration active control type axial plunger pump with a magnetic bearing, which comprises a casing, a stepped drive shaft, a swash plate, a plunger movement assembly, a cylinder body, a magnetically controlled outer ring of a radial cylinder body, a first 1, 2 Radial permanent magnetic bearings, axial positioning magnetic control bearings. The magnetically controlled outer ring of the radial cylinder body collects vibration signals in real time through a displacement sensor, and adjusts the magnetically controlled outer ring of the radial cylinder body according to the magnitude of the vibration. The first and second radial permanent magnetic bearings realize the levitation state of the stepped drive shaft through the principle of magnetic repulsion. The axial positioning magnetic control bearing regulates the electromagnetic force by controlling the magnitude of the current to ensure the axial positioning of the drive shaft. The invention proposes an active vibration control type axial piston pump with magnetic bearing and its control method, while realizing the suspension of the drive shaft, it can monitor and control the vibration of the cylinder body in real time, and reduce the vibration of the bearing and the drive shaft. The friction between them improves the dynamic stability of the cylinder block and improves the stability and reliability of the axial piston pump.
Owner:卓为驱动技术(南通)有限公司
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