2017results about How to "Improve structural stability" patented technology

This invention discloses a double-layer fully automatic opening and closing roller beam device for subway rail transportation, including an upper roller beam, a lower roller beam, a drive column, and side columns corresponding to the drive column. The horizontally transverse upper roller beam is rotatably mounted on the drive column at one end and rests on the side column at the other end. It also includes an automatic control mechanism and a roller beam rotation support mechanism on the same longitudinal line as the drive column. The automatic control mechanism includes a control host and several position sensors installed on the side columns and the roller beam rotation support mechanism to transmit the position information of the upper roller beam. The position sensors feed back signals to the control host to automatically control the opening and closing of the upper roller beam. It is installed on an adjustable height support beam, which includes a support beam, crossbeam support feet, and a crossbeam height adjustment mechanism. It has the advantages of fully automatic opening and closing of the roller beam, simple operation, time and labor saving, high personal safety factor, and high overall structural stability.

The utility model discloses a material conveying mechanism for laser welding. The material conveying mechanism comprises an adjusting clamp set, a driving motor and a conveying assembly. The adjusting clamp set comprises a fixed seat, a guide seat, a first clamping flap and a second clamping flap, and the guide seat is in sliding connection with the clamping flaps through guide pins and used for driving the clamping flaps to be opened and closed and adjusting the clamping distance; the driving motor comprises a driving motor body and a lead screw, the lead screw is sleeved with the guide base through a screw hole, and automatic adjustment of the clamping structure is achieved; the conveying assembly comprises peristaltic petals installed at the ends of the clamping petals and eccentric wheels, the eccentric wheels are driven by the output shaft sleeve to rotate, and materials are clamped and conveyed in a peristaltic mode. The mechanism can realize self-adaptive clamping and stable propelling of welding materials with different specifications, has the advantages of compact structure, stable transmission, high universality and the like, and is suitable for material precision conveying requirements in automatic laser welding equipment.

The utility model provides a battery and electric equipment. The battery comprises a shell, a terminal, an insulating part and a gasket, the terminal is arranged at the position of the shell, the insulating part is arranged between the terminal and the shell, the insulating part is used for separating the terminal from the shell, and the gasket is arranged between at least part of the insulating part and the terminal. According to the battery disclosed by the invention, the direct stress of the insulating part is reduced, the insulating part is prevented from being damaged, and the structural stability of the insulating part is improved.

According to the special-shaped FPC and the manufacturing method thereof, the pre-formed special-shaped flexible base material layer is arranged, the shape of the pre-formed special-shaped flexible base material layer is directly matched with the special-shaped surface of a target installation space, and a circuit layer, an insulation covering layer and a special-shaped supporting layer are all attached to the special-shaped surface of the special-shaped flexible base material layer, so that the FPC does not need to be forcibly bent, twisted or stretched subsequently, and the production efficiency is improved. The problems of circuit breakage and delamination caused by stress concentration are fundamentally avoided, the structural stability of the FPC is improved, and the service life of the FPC is prolonged. The flexible circuit board is used for solving the technical problem that in order to achieve special-shaped layout, the plane of an existing flexible circuit board generally needs to be forcibly bent, twisted or stretched.

The invention relates to an S-doped g-C3N4 coated modified graphite material, a preparation method thereof and a lithium ion battery negative electrode. The method comprises the following steps: mixing a g-C3N4 precursor with a sulfur source, and then carrying out heat treatment under the condition of shielding gas to obtain sulfur-doped graphite phase carbon nitride S-g-C3N4; carrying out plasma modification treatment on the surface of the graphite material by adopting plasma reaction gas to obtain modified graphite; mixing S-g-C3N4 with the modified graphite to obtain a mixed material; and calcining the mixed material in a protective gas environment to obtain the S-doped g-C3N4 coated modified graphite material. The invention also provides the graphite material prepared by the method and a lithium ion battery negative electrode prepared from the graphite material. The graphite material has relatively high conductivity, interface compatibility and structural stability.

The invention discloses a preparation method and application of a bimetallic phosphate oxygen evolution electrode. The preparation method of the bimetallic phosphate oxygen evolution electrode comprises the following steps: cleaning a nickel substrate in an alkaline solution to remove oil, and cleaning the nickel substrate with pure water; soaking the cleaned nickel substrate in an acid solution, cleaning the nickel substrate with pure water, and placing the nickel substrate in the pure water for later use; the nickel substrate placed in the pure water serves as a cathode, two pure nickel materials are placed on the two sides of the nickel substrate to serve as two anodes, and electro-deposition is conducted on the nickel substrate in a bimetallic phosphate solution; and washing an electrode obtained after electrodeposition of the nickel substrate, and drying to obtain the bimetallic phosphate electrode. According to the preparation method, the adsorption free energy of a catalytic layer on the surface of the bimetallic phosphate oxygen evolution electrode on a reaction intermediate is optimized through the synergistic electronic effect of two metals, so that the intrinsic activity of oxygen evolution reaction is improved, meanwhile, a relatively stable catalytic layer structure is formed, and the stability of the bimetallic phosphate oxygen evolution electrode in the oxygen evolution process is improved.

The invention discloses a self-powered flexible sensor and a preparation method thereof, and belongs to the field of electronic skin, man-machine interaction, flexible electronic devices and sensors. The invention relates to a cellulose acetate-based ionic gel self-energized flexible sensor which is prepared from cellulose acetate, ionic liquid, a polymer monomer, a cross-linking agent and an initiator and has good mechanical property and antibacterial property, the cellulose acetate enhances the mechanical property of the gel through non-covalent crosslinking, and the ionic liquid plays a conductive role. The flexible sensor has good conductivity, high sensitivity and stability, and can be stretched, twisted and bent. Meanwhile, the high transparency and excellent biocompatibility can be realized, so that the electronic skin can be used as the electronic skin for multifunctional perception and integrated application. The material is environment-friendly, the preparation method is simple, the operability is high, the application field is wide, and the prospect is wide.

The invention relates to the technical field of photocatalytic processes, in particular to a catalyst for preparing methanol through photocatalytic reduction of CO2 as well as a preparation method and application of the catalyst. The catalyst comprises a composite carrier and active sites dispersed on the surface or in pores of the composite carrier, the composite carrier is of a heterojunction composite structure formed by a hollow TiO2 sphere and MCN, the hollow TiO2 sphere comprises a shell layer and a spherical cavity structure located in the shell layer, the shell layer is formed by TiO2 nanoparticles, and the MCN has a mesoporous pore structure; a II-type or Z-type heterojunction interface is formed between the hollow TiO2 spheres and the MCN through physical contact and chemical action; the active sites comprise copper nano species, sulfur vacancy defects and amino groups; the copper nano species are copper nano particles or clusters, and the valence state of copper is 0 and / or + 1 valence amino is grafted on the surface of the composite carrier through an organic long chain. The catalyst provided by the invention can greatly improve the yield and selectivity of methanol prepared by photocatalytic reduction of carbon dioxide.

The invention discloses an anti-deformation high-strength inspection well prefabricating mold which comprises a base, an outer mold assembly is slidably mounted on a top plate of the base, an inner mold assembly is mounted at the position, in the center of the outer mold assembly, of the base, a demolding assembly is mounted in the inner mold assembly, sliding assemblies are mounted on the two sides of the bottom of the outer mold assembly, and sliding ways are mounted at the positions, corresponding to the sliding assemblies, of the base. The sliding assembly is slidably arranged on the slide way. Through the longitudinal reinforcing ribs and the transverse reinforcing ribs, a stable net-shaped reinforcing structure is formed, side pressure generated on the arc-shaped outer formwork in the concrete pouring process can be effectively dispersed, damage such as bending, deformation and cracking caused by uneven stress of the arc-shaped outer formwork is avoided, the structural stability and deformation resistance of the mold are remarkably improved, and the service life of the mold is prolonged. The reinforcing rib forming grooves which are perpendicularly crossed are formed in the inner side wall of the arc-shaped outer formwork, corresponding outer wall reinforcing ribs can be formed on the outer wall of the inspection well during concrete pouring, and the structural strength of the formed inspection well is effectively enhanced.

The utility model relates to the field of protective film discloses a kind of hot-press processing device of household electrical appliance protective film, including workbench, the top of the workbench is fixedly connected with support, the inner wall top of the support is fixedly installed with hydraulic cylinder, the output end bottom of the hydraulic cylinder is fixedly connected with hot-press plate, the top of the workbench is provided with fixed mechanism, the fixed mechanism includes placing seat, the placing seat is fixedly connected in the top of workbench, the front of the placing seat is provided with recess.This utility model, through the cooperation of first electric push rod, push plate, moving rod and fixed clamp, combined with the second electric push rod driving articulated rod, slide base drives fixed clamp to adjust spacing, realize the automatic pressure fixation of different size protective film, the stress is uniform during fixing process, effectively avoid the displacement and wrinkle of protective film when hot-pressing, significantly improve the close tightness, solve the problem of poor fixing effect of prior art.

The utility model relates to the technical field of elevator derricks, in particular to an inward bending steel structure derrick for installing an elevator, which comprises a base, a derrick I and a plurality of derricks II, the derrick I is fixedly arranged at the top of the base, and the plurality of derricks II are fixedly arranged at the top of the derrick I in sequence. A plurality of stand columns and cross beams are arranged in the base, the first derrick and the second derrick, four stand columns distributed in a rectangular shape are arranged in the base, the first derrick and the second derrick, and the cross beams are connected between every two adjacent stand columns through bolts. The stand column is formed by inwards folding a steel plate to form a first bending piece and a second bending piece, the end, away from the second bending piece, of the first bending piece is inwards folded to form a third bending piece, and the end, away from the first bending piece, of the third bending piece is inwards folded to form a first bending connecting piece. According to the utility model, the problems of single structure, insufficient performance and stress concentration of connecting nodes of an elevator derrick upright post additionally arranged in an old community are solved, and the overall strength, stability and safety of the derrick are improved.

The utility model relates to sofa manufacturing technical field especially is involved in the enhancement design of packing and transportation of sofa, a full dismounting sofa bed, including support base and sofa cushion subassembly, its characterized in that: support base includes support frame, support bottom plate and is located at the detachable supporting leg of support frame four corners, sofa cushion subassembly includes seat cushion, back cushion and side stop pad, seat cushion is detachably connected with support bottom plate through magnetic connection component, and the detachable connecting component is equipped between side stop pad and support bottom plate, back cushion and support bottom plate.

The application relates to the technical field of eyeglass frames, in particular to a clamping type eyeglass frame which comprises a front frame assembly, a temple assembly and a clamping locking assembly. The front frame assembly is provided with a mounting groove, the temple assembly is quickly assembled by being matched with the limiting groove through an elastic buckle, the guide block and the limiting groove ensure accurate positioning, and the reset spring and the unlocking button realize a quick disassembly function. The positioning column and the positioning hole are matched to enhance the connection stability, and the annular groove and the elastic protrusion provide a anti-disengagement function. The application can simplify the assembly process, improve the structural stability, meet the modular design requirement, facilitate users to replace the temples or maintain, meanwhile, the traditional structure loosening problem is avoided, and the use reliability is improved.

The invention provides a method and system for determining the track of a ground reverse inclined shaft of a steeply inclined seam, and relates to the technical field of steeply inclined seam mining and ground drilling engineering. A wellbore trajectory design basic model is established based on coal seam boundary elevation, coal seam inclination angle, effective thickness and roof mechanical parameters; constructing a rectangular plane coordinate system on the top plate side of the goaf to obtain a space coupling relation between a shaft track and a rock stratum structure; smooth transition of a wellbore track is achieved through segmented arrangement of a vertical well section, a deflecting section and a reverse inclining section; determining a rock stratum movement line and calculating an included angle by combining ground surface movement monitoring, and delimiting a safety protection zone between the rock stratum movement line and a roof fracturing target layer; and finally, a trajectory equation of each well section is established with the safety protection zone, the rock stratum movement line intersection point and the rock stratum movement influence boundary as constraints, and a reverse inclined shaft trajectory meeting the requirements for interference avoidance safety and fractured layer coverage precision is obtained.

The utility model relates to the technical field of engine oil pan, especially a leakage-proof structure of in-line piston engine, an engine and an aircraft, including setting in the oil pan of engine crankcase body subassembly lower part, the oil pan forms a basin -like structure of one inner bottom surface basically level, the inner bottom surface of oil pan is concave downward and forms the oil storage groove that the structure is further outward protruding relative to the outer bottom surface of oil pan, the outer bottom surface of oil pan and the outside wall between oil storage groove smooth transition, the sealing edge contact surface of oil pan and engine crankcase body subassembly connection is wide side design, and is installed on the sealing edge contact surface with wide -side sealing pad, and the width of wide -side sealing pad is greater than the width of sealing edge contact surface, the utility model simplifies the structure, makes can adapt to the large inclination angle of aircraft ±45 DEG movement, greatly reduces the oil leakage risk simultaneously.

The application relates to the technical field of carbon dioxide electro-reduction catalysts, and discloses a preparation method of a supported copper nitride catalyst, which comprises the following steps: mixing copper cyanamide and conductive carbon material and performing ball milling; the rotating speed of the ball milling is 500 r / min-5000 r / min, and the ball milling time is 1h-24h; the mass ratio of the copper cyanamide and the conductive carbon material is 1-10:1-10. The catalyst obtained by the method has better stability, selectivity and activity in a carbon dioxide electro-catalytic reduction reaction, and the addition of the conductive carbon improves the conductivity of the catalyst, so that the overpotential of the catalyst in the carbon dioxide electro-reduction is significantly reduced.

The utility model relates to the field of controller silica gel button, disclose silica gel button edge anti -warp reinforcing edge structure, including silica gel base plate, the top fixedly connected with silica gel button of silica gel base plate, the outside fixedly connected with anti -warp reinforcing mechanism of silica gel base plate, the outside fixedly connected with antiskid protection mechanism of silica gel button, the anti -warp reinforcing mechanism includes reinforcing tensile edge, the outside fixedly connected in the outside of silica gel base plate of reinforcing tensile edge, the outside of reinforcing tensile edge is equipped with metal protective cover edge. In the utility model, through fixing reinforcing tensile edge outside silica gel base plate, then the metal protective cover edge is connected with the inside of shell simultaneously, and the precise positioning and locking are realized by using anti -shift joint convex point, positioning recess, extension locking boss and fitting groove, form stable connection, in this way can effectively enhance silica gel base plate edge tensile strength, resist external collision scratch, restrain edge warping deformation.

The utility model belongs to cigarette production equipment technical field discloses a kind of tipping paper curling device.The tipping paper curling device includes rack, guide plate component, paper scraping component and adjusting roller component, guide plate component is fixedly installed on rack, for guiding tipping paper;Paper scraping component is set in the downstream of guide plate component, and paper scraping component includes cutter shaft and doctor blade, cutter shaft is fixedly arranged on rack, and doctor blade is arranged along the axial direction of cutter shaft, and doctor blade is used to scrape tipping paper;Adjusting roller component includes fastening ring, connecting shaft and first paper guide roller, fastening ring is rotatably arranged on cutter shaft and is fixedly connected with connecting shaft, first paper guide roller is sleeved on connecting shaft and is rotatably connected with connecting shaft, and first paper guide roller is located between guide plate component and paper scraping component, and it can make the included angle between tipping paper and cutter shaft be acute, to solve the roughness of tipping paper surface processing effect, enhance the bonding firmness of tipping paper and glue.

The utility model relates to the technical field of passage control equipment, and disclose a vertical non -inductive passage device, including box, identification subassembly, gate and buried part: the lower surface of box and the upper surface of buried part are pasted, the lower surface middle position of box is installed with male block through bolt, is set up in the insertion slot on buried part, the both sides of insertion slot all are set up with lateral groove. This kind of vertical non -inductive passage device, through setting the positioning post on the lower surface of the box, the positioning slot is correspondingly set up on the buried part, the quick accurate positioning of the box and the buried part can be realized by the plug-in cooperation, and the installation process is greatly simplified. At the same time, after the male block of the box bottom inserts the insertion slot of the buried part, the spring in the lateral groove pushes the convex side of the limiting block and the male block to closely adhere, forms effective limiting, and the guiding effect of connecting rod no.

The application relates to the technical field of batteries, in particular to a positive electrode material, a preparation method thereof, a positive electrode sheet and a battery. The positive electrode material comprises: an inner core, wherein the inner core comprises a high-nickel ternary positive electrode material; a first coating layer coated on the surface of the inner core, wherein the first coating layer comprises an oxide of cobalt, an oxide of titanium and an oxide of aluminum; and a second coating layer coated on the surface of the first coating layer, wherein the second coating layer comprises an oxide of selenium; wherein the surface of the high-nickel ternary positive electrode material is treated by an organic acid. The technical scheme can reduce the residual alkali on the surface of the material, effectively improve the structural stability and interface stability of the material in the long-term cycle process, and thus realize excellent cycle life and capacity retention rate.

The utility model relates to the technical field of household appliances, and provides a bottom plate structure and cooking equipment, the bottom plate structure is used for the cooking equipment, the cooking equipment comprises a heating cavity, a drainage structure is arranged on a cavity base of the heating cavity, the bottom plate structure comprises a bottom plate, the bottom plate is arranged below the cavity base, and a water storage structure is arranged on the bottom plate. The water storage structure is arranged below the drainage structure, the water storage structure comprises a water storage tank, the water storage tank is used for receiving water vapor overflowing from the drainage structure, and a reinforcing structure is arranged on the peripheral side of the water storage tank. According to the bottom plate structure, the water storage structure is arranged below the water drainage structure, so that water vapor is accumulated in the water storage tank when permeating into the bottom plate through the water drainage structure, and the situation that the water vapor overflows out of a table top through the bottom plate and influences the cleanliness of the table top is prevented; the reinforcing structure is arranged on the peripheral side of the water storage tank, the structural strength and stability of the water storage structure are enhanced, and therefore the structural strength of the bottom plate is enhanced.

The application belongs to the field of new materials, and discloses a lead-free perovskite X-ray shielding composite material and a preparation method and application thereof, and comprises the following steps: mixing ANF / DMSO dispersion liquid with ethanol to obtain re-protonated ANF dispersion liquid; mixing the re-protonated ANF dispersion liquid, CsI powder and ethanol, and stirring to obtain two portions of the same CsI / ANF dispersion liquid; mixing re-protonated ANF, Cs3Bi2I9 powder and ethanol, and stirring to obtain Cs3Bi2I9 / ANF dispersion liquid; sequentially filtering the first portion of CsI / ANF dispersion liquid, the Cs3Bi2I9 / ANF dispersion liquid and the second portion of CsI / ANF dispersion liquid by using a gel-gel method, and vacuum hot-pressing to obtain a composite gradient film with a biomimetic symmetrical structure, which is used as a lead-free perovskite X-ray shielding composite material; and the application realizes continuous and efficient X-ray shielding effect, and can improve the mechanical flexibility and thermal stability of the material.

This invention relates to the field of secondary battery technology, specifically to a silicon-carbon composite material, its preparation method, and a lithium-ion battery. The preparation method of the silicon-carbon composite material includes: reacting an organometallic framework ZIF-8 in a saturated metal salt solution and then evaporating and crystallizing it to obtain a metal salt-coated organometallic framework Salt@ZIF-8; pulverizing a silicon-copper alloy precursor and the Salt@ZIF-8 at a mass ratio of 1:0.05-0.7 to obtain a mixed powder; and subjecting the mixed powder to a pyrolysis reaction and acid leaching treatment to obtain the silicon-carbon composite material. The silicon-carbon composite material obtained by this invention exhibits excellent structural stability and electrochemical performance, effectively mitigating the volume expansion of the silicon anode and improving cycle performance and rate performance.

This invention relates to the field of biopharmaceutical manufacturing technology, and discloses a BCMA-targeting nanobody, its preparation method, and its application. The nanobody comprises a heavy chain single-domain binding domain, a helical conformation-constrained peptide chain, and an amphiphilic self-assembled polypeptide sequence. The helical conformation-constrained peptide chain forms a steric barrier between the binding domain and the polypeptide sequence through physical length, maintaining the monomeric conformation of the polypeptide sequence in a free state. When the binding domain is anchored at the receptor binding interface, the conformation-constrained peptide chain increases the local effective concentration of the polypeptide sequence within the confined space, inducing intermolecular topological assembly. This invention utilizes a kinetic phase transition mechanism to generate a binding state jump, maintaining the conformational activity of the composition in the circulatory system, reducing off-target toxicity, and prolonging the residence time at the receptor interface.

This utility model discloses an integrated transition yaw connection system for wind turbines, belonging to the technical field of wind power generation equipment. The system includes a wind turbine tower, a slewing bearing, a short-section cylinder, and a lower platform. The wind turbine tower has a truss-type hollow structure. The short-section cylinder is vertically arranged and its top is welded to the lower platform as a whole. Its bottom is connected to the top of the tower through the slewing bearing. This utility model uses a hierarchical structure of truss tower-slewing bearing-short-section cylinder-platform. It utilizes the short-section cylinder to distribute the nacelle load and compensate for installation errors. Combined with the slewing bearing, it achieves low-friction and stable yaw. This structure effectively solves the problems of heavy self-weight, obvious yaw vibration, complex assembly, and easy wear of connection parts of traditional wind turbine towers. It has the advantages of lightweight, stable yaw, convenient installation, and long service life.

The application provides an automatic rod changing device for a down-the-hole drill, and belongs to the technical field of the down-the-hole drill. The automatic rod changing device comprises a hanging arm, a driving mechanism, a lifting clamp plate, a reverse clamping mechanism and a moving and overturning mechanism. At least one group of clamping jaws is slidably arranged on the hanging arm, and each group of clamping jaws comprises two clamping jaws arranged horizontally opposite to each other. The driving mechanism is used for driving the clamping jaws in the same group to move horizontally close to or away from each other. The lifting clamp plate is slidably arranged below the clamping jaws in the vertical direction, and the lifting clamp plate has a freedom degree of moving downward on the hanging arm. The reverse clamping mechanism is arranged on the hanging arm and corresponds to each group of clamping jaws one by one. The moving and overturning mechanism is arranged on the main drill frame and connected to the hanging arm, and is used for driving the hanging arm to move and overturn to the drill rod warehouse. The application integrates the hanging arm, the clamping jaws, the driving mechanism, the lifting clamp plate, the reverse clamping mechanism and the moving and overturning mechanism, discards the complicated process of manually installing and dismounting the supporting plate in the traditional rod changing, and realizes the full-process automation of the drill rod changing of the down-the-hole drill.

The invention relates to a high-entropy ceramic capacitor, a ceramic dielectric material for the high-entropy ceramic capacitor and a preparation method, the raw material composition of the ceramic dielectric material comprises NaNbO3, (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, by controlling the raw material ratio and preparation process parameters of sodium niobate and adopting a multi-step grinding synthesis method, NaNbO3-based high-entropy ceramic is designed, so that the insulation resistance of the high-entropy ceramic capacitor is effectively improved; on the other hand, chemical modification treatment is carried out by introducing (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, so that the structural stability of an antiferroelectric phase is enhanced, the compactness of the material is improved, and finally, the energy storage performance of the material is optimized and improved.

This utility model discloses a support system for an integrated sloping roof and courtyard, and a residential photovoltaic power station. The system includes a roof support and a courtyard support. The roof support comprises several horizontally spaced inclined beams on a first sloping roof, several horizontally spaced back braces on a second sloping roof, and short column support assemblies installed on both the first and second sloping roofs to support the inclined beams and back braces. The back braces are correspondingly positioned to the inclined beams, with their upward-sloping ends connected to the beams. The inclined beams extend downwards along the first sloping roof to above the courtyard. The courtyard support includes columns installed within the courtyard, with their upper ends connected to the inclined beams. A reinforcement structure is provided between the columns and the inclined beams, and / or between the columns themselves. The roof support and courtyard support can be designed as a single unit, forming a unified slope above the first sloping roof and courtyard for installing photovoltaic modules, increasing the number of photovoltaic modules installed and expanding the power generation area.

The utility model discloses a high pressure jet formula impact head, including sinking pipe, impact head and support plate, the support plate is two, two the support plate radial setting at sinking pipe bottom end export place, be equipped with rotating shaft between the support plate, the rotating shaft is hinged with first closed door and second closed door, first closed door and second closed door are hinged respectively in rotating shaft both sides, the bottom port of sinking pipe is equipped with two with first closed door and second closed door cooperation's first bevel and second bevel that lean to upwards. The utility model has the beneficial effects that: guarantee the penetration ability to the stratum, have promoted the structural stability and durability of impact head, have improved construction efficiency.