33results about How to "High structural efficiency" patented technology

The invention relates to the technical field of wind power, and discloses a lattice type fan tower which comprises a top tower section, a switching section and a lattice section, the top end of the switching section is fixed to the top tower section, and the top end of the lattice section is fixed to the switching section; the lattice section comprises a plurality of corner columns and a plurality of reinforcing pieces, all the corner columns define a corner column frame, and the top ends of all the corner columns are fixed to the switching section; the reinforcing pieces are connected to the two adjacent corner columns in the side edge direction of the corner column frame. Any corner column is provided with a corner column inflection point, and the corner column is bent towards the outer side of the corner column frame at the corner column inflection point. The height of the corner column inflection point is configured to be lower than or equal to the lowest height of the blade tip of the fan blade, it is guaranteed that the blade does not collide with the tower in the operation process, the taper of the lattice section below the corner column inflection point can be flexibly adjusted, the structural efficiency is higher, and the material consumption is smaller. And the frequency of the tower can be flexibly adjusted by adjusting the conicity of the lattice sections, so that the resonance interval of the fan is avoided, and the safety of the tower is guaranteed.

The invention relates to the technical field of rim manufacturing, in particular to a light-weight rim and an efficient production method thereof. The light-weight rim comprises an upper body, a lower body, a thickening body set and an external whole. The upper body, the lower body and the thickening body are connected into a combined body, and the combined body is integrally wrapped with the outer part; the upper body is formed by laying prepreg and performing compression molding; the thickened body group is subjected to injection molding through a polyurethane foam reaction; and the lower body and the outer whole body are formed in a mode of combining a three-dimensional weaving technology and an HP-RTM (High Pressure-Resin Transfer Molding) forming process. The light-weight wheel rim has the advantage that the light weight of the wheel rim is achieved through the carbon fibers and the rigid polyurethane foam. On the premise that the requirement for the size of the rim structure is not affected, the integrated structure is divided into an upper body, a lower body, a thickening body set and an external whole. The non-bearing position (the thickening body group position), namely the interlayer between the upper body and the outer whole body and the interlayer between the lower body and the outer whole body, are filled with rigid polyurethane foam.

The invention relates to the technical field of unmanned equipment, in particular to a sowing mechanism, a sowing device and unmanned equipment. The sowing mechanism comprises a driving assembly and a throwing disc, and the throwing disc comprises a disc body and blades; the disc body comprises a connecting part and a stirring part, and the connecting part is in transmission connection with the driving assembly so as to drive the throwing disc to rotate around the first axis under driving of the driving assembly; the blades are arranged on the stirring part and are used for stirring materials; wherein the dialing part is arc-shaped and forms a circle with a specific angle on the connecting part, and the specific angle is smaller than 360 degrees. The throwing disc of the sowing mechanism has higher structural efficiency when being used for reciprocating swing in a variable direction, and since only blades at part of angles of the throwing disc can dial materials during reciprocating swing, a complete circle formed by a dialing part is not needed, the size of a disc body can be correspondingly reduced, the weight of the whole throwing disc is reduced, and the cost is reduced. The load of the driving assembly is reduced, the cost for preparing the throwing disc is reduced, and the structural efficiency is improved.

The invention relates to a wing connection device for connecting an outer wing to a central wing and comprising a triple joint comprising a first joint, a second joint and a third joint, wherein the first joint is fixed to a central wing rear spar of the central wing, the second joint is fixed to an outer wing rear spar of the outer wing and the third joint is fixed to a docking rib web of the outer wing, and a rear strut plate fixed to a rear spar frame of the central wing. In this way, by fixing the rear strut plate to the rear spar frame of the central wing, the load from the outer wing can be spread, so that the stress level is reduced, the structural efficiency is improved and the deformation of the connection structure is reduced. For example, the rear strut plate spreads the upward load and spreads the load to the fuselage frame and via the fuselage frame to the fuselage. The invention also relates to an aircraft comprising such a wing connection device and to a method of connecting wings.

This application provides a multi-layer tension cable net floating platform to solve the problems of heavy weight and difficult tensioning construction of existing floating platforms. It includes a central column and pressure rings and buoyancy rings spaced apart from top to bottom, coaxially arranged with the central column. The pressure rings and buoyancy rings are connected by several first support rods. The top of the central column extends beyond the upper surface of the pressure rings, and the bottom of the central column is located between the pressure rings and buoyancy rings. Several first and second cables are respectively arranged between the pressure rings and the top and bottom of the central column, and several third cables are arranged between the buoyancy rings and the bottom of the central column. The first support rods, first cables, second cables, and third cables are all arranged in a circular array along the axis of the central column. By using multiple cables, this application significantly reduces the weight of the floating platform while ensuring its strength, thus saving costs.

The utility model discloses a drying device for cattle bone powder production. The drying device comprises supporting legs, a shell is installed at the top ends of the supporting legs, a stirring mechanism is installed in the shell, a stirring shaft is installed at the top end of a servo motor, a rotating block is installed at the top end of the stirring shaft, and scrapers are installed on the two sides of the rotating block. According to the cattle bone powder drying device, the servo motor is installed at the bottom end of the shell, the servo motor works to drive the stirring shaft to rotate, the stirring shaft rotates to drive the stirring blades to rotate, the stirring blades rotate to stir cattle bone powder in the shell, the cattle bone powder is dried more evenly, the cattle bone powder structure efficiency is higher, and meanwhile, the cattle bone powder drying efficiency is improved. The stirring shaft rotates to drive the rotating block to rotate, the rotating block rotates to drive the scraping plate to rotate, the scraping plate rotates to treat and stir the surface of the screen, the screening effect of the cattle bone powder on the surface of the screen is better, and therefore the purpose that the drying device for cattle bone powder production facilitates improvement of the processing efficiency of the cattle bone powder is achieved.

The application discloses a boride double-scale synergistically reinforced high-manganese steel-based wear-resistant casting and a preparation method thereof, and belongs to the technical field of wear-resistant metal materials and special casting. The casting takes high-manganese steel as a matrix, adopts micron-level TiB2 and nanometer-level ZrB2 to form double-scale boride reinforcing phases, controls the distribution of the reinforcing phases through a powder core wire mesh weaving technology, and forms a metallurgical bonding interface through spray deposition and isothermal annealing. The synergistic improvement of tensile strength, impact toughness and wear resistance is realized. The product is suitable for high-stress wear environments in the mining, metallurgy, building material and other industries, effectively solves the technical pain point that the strength and toughness of traditional high-manganese steel are difficult to be considered, the process is stable and controllable, and differential strengthening can be realized, and the product has industrial application value.

The invention provides a handle fixing assembly for a tool for riding instead of walk and the tool for riding instead of walk. The handle fixing assembly comprises a support part, a tubular handle part, a pressing plate and a fixing piece, the pressing plate comprises a first end and a second end, the first end extends towards the tubular handle part and is inserted into the insertion hole, the second end of the pressing plate extends in the direction away from the tubular handle part, and the first end and the second end have a height difference; the horizontal height of the second end is smaller than that of the first end, the pressing plate is provided with a connecting area located between the first end and the second end, the supporting structure is located below the pressing plate, and the supporting structure provides a supporting face for supporting the second end; the fixing piece fixes the pressing plate and the support part through the connecting area, and the fixing piece applies connecting force which is at least downward in the height direction to the pressing plate. The problem that in the prior art, a handle fixing assembly is poor in reliability is solved.

The invention discloses an aluminum alloy profile for a rocket stringer and a preparation method of the aluminum alloy profile. The aluminum alloy profile for the rocket stringer consists of the following elements in percentage by weight: 2.2-2.4% of Cu, 2.9-3.4% of Mg, 7.3-7.9% of Zn, 0.05-0.15% of Zr, less than or equal to 0.05% of Fe, less than or equal to 0.1% of Si and the balance of Al. The preparation method comprises the steps of extrusion, solid solution heat treatment, stretch straightening, aging heat treatment and the like. The advantages of high purity, high strength, high rigidity, high safety and the like of the 7050-8 aluminum alloy material are utilized, development of the 7050-8 aluminum alloy profile product for the launch vehicle stringer is developed, core technologies such as mold design, extrusion forming, heat treatment strengthening and finishing treatment are overcome in the development process, the launch vehicle structure efficiency in China is improved, and the production cost is reduced. The prepared profile meets the application requirements of a new-generation carrier rocket structure, and application and iteration of a new aluminum alloy material are promoted.

The large-span semi-flexible photovoltaic support comprises a longitudinal beam, a semi-flexible connecting part and support supports arranged at the two ends of the longitudinal beam, one end of the semi-flexible connecting part is fixedly connected with the support supports, and the other end of the semi-flexible connecting part is connected with the support supports on the opposite side through a tension structure. One end of the longitudinal beam supporting piece is fixedly connected with the longitudinal beam, and the other end of the longitudinal beam supporting piece is connected with the semi-flexible connecting part through the connecting node assembly; and pretension is applied to the semi-flexible connecting part through the tension structure, so that axial pressure is provided for the longitudinal beam supporting piece, and the longitudinal beam supporting piece supports the longitudinal beam. According to the large-span semi-flexible photovoltaic support and the connecting node thereof, the bearing capacity of the photovoltaic support is greatly improved, and the large-span semi-flexible photovoltaic support and the connecting node thereof have the advantages of being light in rod piece self weight, large in adaptive span, high in structural efficiency, easy and convenient to construct, capable of being assembled, disassembled and used repeatedly and the like, can be applied to a large-span photovoltaic support system, are not limited by terrains and are high in comprehensive economical efficiency.

The utility model discloses a lattice formula concrete wind power tower column foundation, including a plurality of around wind power tower vertical center line circumferential uniform distribution's foundation structure, the foundation structure includes the foundation main part buried in the foundation and is used for and the wind power tower bottom tower column links the platform column, the platform column is located in the foundation main part, the outer wall of platform column and the inner wall of foundation main part are equipped with a plurality of first connecting plate, and the outer wall between adjacent foundation main part is equipped with the second connecting plate for realizing the connection of adjacent foundation main part. The utility model discloses a lattice formula concrete wind power tower column foundation has the advantages such as light self weight, simple structure, reasonable stress, high anti -pulling bearing capacity, good economy, convenient construction etc.

The present application belongs to the field of microbial technology, and particularly relates to a synbiotic preparation of lactobacillus helveticus, a preparation method and application thereof. The synbiotic preparation of lactobacillus helveticus provided by the present application is a microcapsule preparation prepared by embedding lactobacillus helveticus as probiotics and sialylated human milk oligosaccharide as prebiotics in turn by using sodium alginate and chitosan. The lactobacillus helveticus is lactobacillus helveticus HL88. The lactobacillus helveticus HL88 used in the present application has better lysis activity on sialylated human milk oligosaccharide, and can effectively improve the utilization efficiency of sialylated human milk oligosaccharide. Further, the lactobacillus helveticus and sialylated human milk oligosaccharide are complexly embedded in the present application, which can play a synergistic metabolic role, thereby effectively promoting the brain development process. Therefore, the present application can provide a treatment idea for improving brain development retardation, and can provide a technical basis for developing probiotic drugs for promoting brain development.

The aerosol generating device comprises a first shell structure and a second shell structure, wherein the first shell structure comprises an atomizing space and a first aerosol flow channel communicated with the atomizing space; a second housing structure comprising a chamber containing an aerosol-generating substance, an air inlet for discharging aerosol, and a second aerosol flow channel communicating with the air inlet from the first aerosol flow channel, and detachably coupled to the first housing structure; the core material is located in the atomization space; and an absorbent member including a protruding region protruding from the second housing structure and delivering the aerosol-generating substance from the chamber to the core material. Wherein the first aerosol flow channel may be arranged in a direction around the core material and the protruding region of the absorbent member.

The invention belongs to the technical field of aqueous zinc metal batteries, and particularly relates to a zinc negative electrode protection layer for regulating and controlling zinc ion transmission based on a bimetal MOF channel, a preparation method of the zinc negative electrode protection layer, a composite zinc negative electrode and an aqueous zinc metal battery. Zirconium salt and zinc salt are mixed in a solvent environment, an organic ligand is added, a UiO-10 Zn material is synthesized through a solvothermal reaction, and then the surface of zinc foil is coated with the UiO-10 Zn material to form a protective layer. The transmission of Zn < 2 + > at an electrode-electrolyte interface can be effectively promoted, the migration ability of Zn < 2 + > is improved by Zr-Zn bimetal sites, and the uniform deposition of zinc is guided by three-dimensional ordered pore channels. When the prepared electrode total battery is matched with an NH4V4O10 positive electrode, the specific capacity is kept at 108.8 mAh g <-1 > after 200 cycles under the current density of 1 A g <-1 >.

This invention relates to the fields of microbial fermentation and genetic engineering technology, specifically disclosing a method for preparing human type III collagen fragments. Based on Pichia pastoris, this invention constructs a multidimensional synergistic expression system of "molecular chaperone co-expression - precursor supply - osmotic pressure adaptation regulation," reducing the structural instability of collagen fragments during secretion and post-processing, and constructing an expression system suitable for stable and efficient secretion of collagen fragments. The method described in this invention can achieve efficient extracellular secretory expression of human type III collagen fragments, and the obtained protein has high structural uniformity and stability, with a protein yield of up to 6.55 g / L under 5 L fermenter conditions. The method described in this invention is suitable for the large-scale preparation of human type III collagen fragments and provides a new technical solution for obtaining collagen products with high structural uniformity and good functional activity.

The invention discloses a test method for testing the choked flow characteristic of a pile foundation open type breakwater, and relates to the technical field of breakwater choked flow characteristic tests, and the method comprises the following steps: S1, determining the size of a test water tank and a model scale; s2, configuring a test water tank, and arranging a pile foundation open type breakwater model in the test water tank; s3, determining upstream and downstream water flow stable areas, and respectively selecting a test section in the upstream and downstream water flow stable areas; s4, carrying out a characteristic test experiment, and after the flow field is stable, obtaining the water depth and the average flow velocity of the upstream test section and the downstream test section; and S5, based on the energy equation and the momentum equation, calculating head loss and water flow resistance of a hydrodynamic field caused by the pile foundation open type breakwater model. According to the method, the structural complexity of the pile foundation open type breakwater is fully considered, and the choked flow characteristic test can be rapidly and accurately carried out.

This invention belongs to the field of aerospace technology, specifically disclosing a corrugated plate load-bearing cylinder structure. The cylinder is constructed using corrugated plates, a skin, and annular fasteners. Due to the inherent thickness of the corrugated plates, the resulting cylinder possesses high bending stiffness, thus enabling it to bear significant loads. Furthermore, by fixing the inner wall of the skin to multiple outer ring protrusions of the corrugated plates to form the outer cylinder mounting surface, the connection between each outer ring protrusion of the corrugated plate and the skin is a planar structure. This results in the corrugated plates and skin forming multiple vertically arranged strip-like surfaces after installation, preventing localized instability. Compared to conventional cylindrical structures using rod structures or aluminum alloy skin stringer structures, this invention improves the structural efficiency of the cylindrical structure.

The utility model discloses a wharf bridge -type crane three -span steel truss support optimization structure of mixed constraint adopts three -span continuous steel truss form, and the supporting leg adopts mixed constraint connection mode with main truss, that is, adopts articulated constraint in longitudinal direction, adopts elastic constraint in transverse direction, adopts rigid constraint in vertical direction, and the foundation support adopts combined structure, and the upper part is spherical hinge support, the middle part is shock -absorbing rubber pad layer, and the lower part is anchor bolt group, and stiffened rib plate is arranged at each component connecting joint in structure, and the stiffened rib plate is radially arranged, and the node is provided with stiffened rib plate, the support optimization structure provided by the utility model can combine the constraint characteristics of different directions, improve the stability, the anti -seismic performance and fatigue life of structure, optimize truss stress distribution simultaneously, reduce the material consumption, to adapt to the long -term use demand under the complex working condition of port. It is suitable for large -span port bridge -type crane, and can significantly improve the safety and economy of equipment.

The invention discloses a multi-engine multi-point force transmission structure with an ultra-large-diameter ball bottom and an ultra-close distance. The number of box bottom thrust flanges is consistent with the total number of engines and servo; the box bottom thrust flange is axially and uniformly distributed and fixedly arranged on the box bottom scalloped segment, and an annular rack lower frame is arranged on the box bottom thrust flange; a rack upper frame connected through a rod piece is arranged above the rack lower frame, engines and servo devices are installed on the rack upper frame at intervals, and the installation positions of the engines and the servo devices and the positions of two nearest box bottom thrust flanges below the engines and the servo devices form an isosceles triangle; wherein the thrust of each engine is divided into two paths through two engine thrust rods at the engine mounting position to be connected to the lower frame of the rack on two adjacent box bottom thrust flanges below, and the thrust of each servo is divided into two paths through three servo thrust rods at the servo mounting position; the two outer paths are connected to a rack lower frame connected to two box body thrust flanges below, the middle path is connected to the rack lower frame between the two box body thrust flanges, a servo thrust rod of the middle path is supported by an auxiliary support below the rack lower frame, and an anti-bending cover is fixedly arranged in the box bottom scalloped segment; and the box bottom thrust flange and the box bottom thrust flange are opposite and coaxial.

The utility model discloses a flue gas condensation recovery structure of gas heating water heater belongs to gas heating water heater technical field, including the shell, is equipped with burner in the shell, is equipped with the first heat exchanger on the burner, is equipped with the first heat pipe that passes to the first heat exchanger, is equipped with the fixed clamping edge on the first heat exchanger, installs the tapering channel on the first heat exchanger, and the fixed sleeve is equipped with on tapering channel periphery, and the fixed sleeve periphery is equipped with a plurality of fixed buckles, is equipped with the flow guide channel on tapering channel, and the through groove is seted up on the one side of flow guide channel, and the water diversion groove is welded in the through groove, and the drain pipe is equipped with on the one side second heat exchanger of water diversion groove, is equipped with the second heat exchanger in flow guide channel, and the second heat pipe that passes is equipped with on the second heat exchanger, and the fan is equipped with on the other side of flow guide channel, through the setting of tapering channel and fixed buckle, make the user can stabilize the connecting component and optimize flue gas flow, solve the traditional gas heating water heater flue gas and heat exchanger contact not enough problem.

The application discloses a controllable energy-absorbing CH-type corrugated stand column and an aircraft fuselage structure, and belongs to the technical field of aircraft structures. A H-type corrugated section is arranged in the middle section of the CH-type corrugated stand column, and upper and lower ends are C-type connecting sections, which are connected with a floor beam and a fuselage frame through corner pieces, respectively. The aircraft fuselage structure comprises the CH-type corrugated stand column and the fuselage frame, and a plurality of induction openings are arranged at the upper edge strips of the fuselage frame. Through the combined action of the CH-type corrugated stand column and the fuselage frame, a plurality of plastic hinges are generated at the induction openings, so that stable progressive failure of the CH-type corrugated stand column under pressure is ensured, controllable failure and energy absorption stability of the aircraft fuselage frame section are realized, the energy absorption efficiency of the structure and the landing performance are greatly improved, and the problems of uncontrollable deformation of the thin-walled structure of the aircraft fuselage lower opening section and low energy absorption efficiency are solved.

A two-stage reusable carrier comprises a first stage and a second stage connected in series; the first stage is an axisymmetric thin-walled cylindrical rocket body, and is provided with canards, lift wings and V-shaped tail wings; the lift wings are fixed wings, located at the rear of the rocket body, in the form of delta wings, and provide lift or resistance for the first stage during horizontal return, and elevator ailerons are arranged under the wing body, which can be used for steering or up and down yaw; the canards are single-axis swing wings, the rotation axis is parallel to the arrow axis, and are located at the front of the rocket body; the V-shaped tail wing is a fixed wing, located at the rear of the rocket body, and is in the form of symmetrical double tail wings; the second stage is an axisymmetric thin-walled cylindrical rocket body, and the layout scheme is similar to that of the first stage. The present invention provides a design scheme for the integration of traditional rockets and winged aircraft, which solves the problem that traditional rockets do not have the ability to fly horizontally on the one hand, and on the other hand, takes advantage of the high efficiency of the rocket configuration structure, and realizes the integration of the advantages of the two.

The invention discloses a flash welding method for a wheel rim based on titanium and manganese alloy reinforcement. The flash welding method mainly solves the technical problems that in the welding process of an existing steel wheel rim straight seam based on titanium and manganese alloy reinforcement, the welding seam strength is reduced, and a welding heat affected zone cracks in subsequent machining. According to the technical scheme, the flash welding method for the wheel rim based on titanium and manganese alloy strengthening comprises the steps that (1) a wheel rim blank is prepared, a hot-rolled pickled steel plate with the thickness being 3.0-5.0 mm is rolled to be round and then is in butt joint, and the wheel rim blank is obtained; the metallographic structure of the hot-rolled pickled steel plate is fine grain ferrite and a small amount of pearlite; (2) the wheel rim blank is clamped and fixed; (3) the wheel rim blank is welded; and (4) a welding seam obtained after butt welding of the wheel rim blank is treated. The welding seam gas tightness qualification rate is larger than or equal to 95%, the tensile strength of the welding seam is larger than or equal to 530 MPa, and the welding seam quality is

The utility model discloses a power system and vehicle relates to vehicle body structure technical field, wherein, power system is used to set up between two longitudinal beams of vehicle, power system includes range extender and auxiliary frame, range extender includes engine and generator, and engine and generator are along the extension direction of longitudinal beam arrangement, and the length direction of range extender is identical with the extension direction of longitudinal beam, the auxiliary frame presents the frame structure, and range extender is connected in auxiliary frame through suspension assembly, and the auxiliary frame is used to be connected in longitudinal beam, and supplies the suspension of vehicle installation. The utility model provides technical scheme to reduce the development cost of increasing because of the alteration longitudinal beam span, and guarantees the crash safety performance and the driving stability of vehicle.

The utility model discloses a foaming board for ventilation and heating and a unit shell, the foaming board for ventilation and heating is used for abutting against and sealing a step structure, the step structure is provided with a bottom face and a side face, the foaming board comprises a board body, a protrusion is arranged on the peripheral side of the outer edge of the board body, the protrusion comprises a first end face and a second end face, and the first end face and the second end face are arranged on the board body. The first end face is used for abutting against the bottom face, a strip-shaped elastic sealing piece is arranged on the second end face, the elastic sealing piece is used for extruding the side face, and sealing between the side face and the second end face is achieved by extruding the side face through the elastic sealing piece. The foam board can be installed with the step structure in a matched mode through the protrusions on the outer edge, the side wall of the step structure is completely sealed through the sealing pieces on the protrusions, and due to the fact that the sealing pieces on the periphery of the foam board are in interference fit with the step structure, the sealing pieces are extruded to deform to form a sealing face to achieve the waterproof effect. The structure is higher in efficiency.

The present application relates to a kind of aircraft windscreen frame skeleton assemblies, comprising: window frame skeleton, window frame skeleton includes around the main windscreen of aircraft main windscreen mouth frame and around the side windscreen of aircraft side windscreen mouth frame, and main windscreen mouth frame and side windscreen mouth frame are integrally formed with corresponding main windscreen and side windscreen by the form of tight fit installation cooperation, realize the load transfer of aircraft.Two main windscreen mouth frame directly contact and are connected, and main windscreen mouth frame and side windscreen mouth frame are also directly contacted and are connected.The butt joint design of the mouth frame of four integral window frame skeletons and the use of connecting band plate at mouth frame butt joint section make the force transmission route of window frame at connection section more directly, realize higher transmission efficiency, higher structural efficiency, under the premise of meeting the bearing design demand, since window frame section form is simple, manufacturing difficulty and manufacturing cost are greatly reduced.

The invention discloses an aircraft composite material nacelle air door structure and a forming method, a nacelle air door is of a composite material integral structure and comprises a door body and two side guard plates, the door body is composed of an outer panel, an inner panel, a honeycomb core and a rear inner panel, the curvature of the outer panel meets the aircraft appearance requirement, the honeycomb core is of a wedge-shaped plate-like structure, and the rear inner panel is of a wedge-shaped plate-like structure. The thickness of the rear end of the door body is larger than that of the front end of the door body, the honeycomb core is located between the inner panel and the outer panel, the rear inner panel is arranged at the rear end of the door body and embedded in the groove, the outer panel forms free edges on the two sides of the honeycomb core and the inner panel, and the two side protection plates are of a similar triangular plate-shaped structure. The rear end of the nacelle air door is connected to an aircraft body through a suspension connector, and the middle of the inner side of the nacelle air door is connected with an air door actuator through a control connector.

The invention discloses a forming mold and a preparation method of a composite material structure square tube for a satellite. The forming mold comprises a core mold and a pressing mold, the core mold is provided with four first molding surfaces which are respectively used for molding four inner walls of the square tube; the pressing die comprises an upper pressing strip and a lower pressing strip, and the lower pressing strip is provided with a second forming face and a third forming face which are used for forming the lower outer wall and the right outer wall of the square pipe respectively. The upper pressing strip is provided with a fourth forming surface and a fifth forming surface which are respectively used for forming the upper outer wall and the left outer wall of the square tube; the first end of the lower pressing strip is in beveled fit with the second end of the upper pressing strip, and the second end of the lower pressing strip is in beveled fit with the first end of the upper pressing strip. The method is applied to the field of composite material forming, the winding and mold pressing coupling technology is applied to preparation of simple structural parts such as satellite structure square pipes, and the method has the advantages of being easy to prepare, low in cost, high in product bearing strength, large in structural rigidity, high in integration degree, good in reliability and the like.

The invention discloses a carbon cloth-based composite material, a preparation method and application in a supercapacitor, and belongs to the technical field of supercapacitor electrode materials, and the method comprises the following steps: dissolving nickel nitrate hexahydrate, copper nitrate pentahydrate and an organic ligand containing carboxyl and amino in N-methyl pyrrolidone, adjusting the pH value to 6.07.0, and stirring to form a uniform mixed solution; the preparation method comprises the following steps: carrying out ultrasonic and microwave synergistic activation on pretreated carbon cloth, immersing the carbon cloth in a mixed solution for gradient heating solvothermal reaction to obtain a flexible Ni-Cu bimetal MOF / carbon cloth composite material, immersing the flexible Ni-Cu bimetal MOF / carbon cloth composite material in a composite vulcanizing agent solution prepared from thioacetamide and potassium sulfide, and sequentially carrying out segmented water bath vulcanization and gradient calcination treatment to obtain the flexible Ni-Cu bimetal MOF / carbon cloth composite material. The carbon cloth-based composite material is obtained. The flexible core-shell porous sulfide / carbon cloth composite material with high specific surface area, high specific capacitance, excellent cycle stability and low internal resistance is prepared, the process is mild, the solvent can be recycled, and the composite material has good industrial economy and environmental friendliness.

This invention relates to a composite sodium-replenishing material, its preparation method, an electrode, and a battery. The composite sodium-replenishing material comprises a matrix, a sodium-replenishing agent body, and a conductive reinforcement. The matrix is ​​porous carbon fiber; the sodium-replenishing agent body is distributed on the surface and within the pores of the matrix; the conductive reinforcement is partially embedded within the sodium-replenishing agent body and partially located on its outer surface. The preparation method of the composite sodium-replenishing material includes the following steps: hydrothermal treatment of a dispersion; the dispersion comprises porous carbon fibers, sodium salt, and a conductive reinforcement. The composite sodium-replenishing material of this invention can improve the initial efficiency and capacity retention of sodium-ion batteries.