702results about How to "Avoid it happening again" patented technology

The invention relates to the technical field of biological medicines, in particular to a soluble skin-adhering microneedle for delivering an inactivated enterovirus vaccine as well as a preparation method and application of the soluble skin-adhering microneedle. Sodium hyaluronate is adopted as a film forming material to wrap an enterovirus 71 type (EV71)-coxsackie virus A16 (CA16) type bivalent inactivated vaccine antigen, and a needle body layer of the soluble microneedle is formed; the substrate layer is prepared from a pullulan material, so that the microneedle patch with a stable overall structure is formed. The technology provided by the invention is completed in a clean environment, and the vaccine patch which is qualified through sterility detection is obtained. The soluble microneedle disclosed by the invention has good antigen stability under the condition of 2-8 DEG C. In animal experiments, the microneedle is attached to the skin surface of a mouse for skin-adhering immunization, a strong immune response reaction can be induced, good immunogenicity is shown, and a novel, safe and effective vaccine delivery way is provided for prevention and control of the infantile hand-foot-and-mouth disease.

The invention relates to the technical field of preparation of silicon carbide ceramics, in particular to an in-situ reaction sintered silicon carbide ceramic and a preparation method thereof.The preparation method comprises the following technological stages which are conducted in sequence: S1, preparation of silicon carbide slurry, specifically, organic matter precursor raw materials are weighed according to the mass content percentage to form the silicon carbide slurry; s2, vacuum grouting: injecting the silicon carbide slurry in the vacuum grouting tank into the shaping mold from the bottom of the shaping mold to form a silicon carbide green body; and S3, in-situ reaction sintering is conducted, specifically, the silicon carbide green body is placed in a sintering furnace, heating, heat preservation and cooling are conducted on the silicon carbide green body in the argon atmosphere through a segmented temperature control technology, and the silicon carbide ceramic is obtained. The silicon carbide ceramic prepared by the method disclosed by the invention has relatively high density and excellent mechanical properties.

The invention provides a pipeline welding real-time feedback control method and system based on machine vision. According to the method, multi-modal data such as a three-dimensional point cloud, a temperature field and a welding seam image are synchronously collected, and key characteristics such as a pose deviation gradient, a cooling rate curve and a welding seam size sequence are extracted after time sequence alignment, filtering and correction fusion. And a CNN and LSTM mixed adaptive deep learning model is utilized to analyze the welding quality state in real time, and sub-optimal parameters are dynamically optimized based on a reinforcement learning strategy, or a three-level response mechanism including heat reduction input, expert knowledge base matching and precise repair is triggered to process defect early warning. The system has an incremental learning capability and can be self-optimized along with a control period. The full-flow intelligent monitoring, real-time feedback and self-adaptive accurate control of the welding process are achieved, and the welding quality and the automation level are remarkably improved.

The invention discloses a large-range landslide mass displacement early warning method based on GNSS and radar data fusion, and the method comprises the steps: obtaining GNSS monitoring sequence data in a landslide region based on the position information of a reference station and a GNSS monitoring station in a GNSS monitoring system, and further obtaining the displacement related information of the landslide region; collecting data through a satellite InSAR, and generating deformation field data of a landslide area by comparing radar images at different time points; performing space-time alignment on the obtained data, and performing two types of data fusion S by adopting an adaptive Kalman filtering method after alignment; decomposing time series data of the fused landslide mass displacement by using wavelet transform, and extracting multi-scale features of a time domain and a frequency domain; the proposed features are combined with historical data of landslide mass displacement, a landslide mass displacement trend prediction model using an LSTM method added with a memory decline factor is input, and future trend prediction of landslide displacement is carried out; setting a multi-level threshold value, judging the change trend of the landslide mass displacement according to the displacement rate, the acceleration and the prediction result, and generating a multi-level early warning signal.

This invention provides a synthesis apparatus for phenylhydantoin, a precursor of phenylglycine, belonging to the field of chemical equipment technology. It includes an ammonium bicarbonate solution reaction tank, an intermediate tank, and a phenylhydantoin solution synthesis tank. The ammonium bicarbonate solution reaction tank is equipped with an ammonia inlet pipe and a carbon dioxide gas inlet pipe. The intermediate tank is connected to the ammonium bicarbonate solution outlet at the bottom of the reaction tank via a pipeline. The top of the phenylhydantoin solution synthesis tank is equipped with a sodium cyanide solution inlet pipe, a benzaldehyde solution inlet pipe, and an ammonium bicarbonate solution inlet pipe. The phenylhydantoin solution synthesis tank includes a jacketed synthesis tank body and is equipped with a heating pipe and a discharge pipe connected to the internal cavity of the jacket to provide a suitable temperature for the synthesis of phenylhydantoin. This application can reduce the frequent dumping operations of the batch reactor, realize the continuous reaction of the phenylhydantoin solution, and at the same time, use ammonia to absorb carbon dioxide instead of solid ammonium bicarbonate, reducing the safety hazards and environmental risks caused by leakage and improving production efficiency.

This invention discloses a method for controlling sulfides in sulfur-containing gear steel, belonging to the field of metallurgical technology, including converter, LF refining, RH refining, and continuous casting processes. Converter process: molten steel tapping temperature 1630±20℃, carbon-oxygen product controlled below 0.0020; LF refining process: aluminum content in molten steel controlled at 0.035-0.045%, LF slag composition adjusted to R: 1.5-2.5, FeO+MnO: 1.0-2.0%; RH refining process: ferrotitanium added in one step to adjust the composition appropriately; Continuous casting process: argon-blown stopper rods and submerged entry nozzles are used for continuous casting, and 150-200 kg of low-basicity tundish covering agent is added to the tundish. The sulfur-containing gear steel produced by this invention can be continuously drawn for more than 10 heats, and the level of Class A inclusions can be stably controlled at A coarse ≤ 1.0 grade and A fine ≤ 1.5 grade, with a pass rate of over 99.9%.

This invention relates to a boron-doped multi-element polyanionic sodium-ion battery cathode material and its preparation method, comprising the following steps: [The method involves] mixing Na₄Fe₂O₃ with... 3‑X B X (PO4) 2‑Y (SiO4) Y The stoichiometric ratio of P2O7 is determined by adding ferrous source, boric acid, sodium source, phosphorus source, and silicon source to water, followed by the addition of carbon source and mixing thoroughly to obtain a mixed slurry; wherein 0.2≤X≤0.5, 0<Y≤1; the mixed slurry is then ground to obtain a sand-milled slurry; the sand-milled slurry is dried to obtain precursor powder; under a protective atmosphere, the precursor powder is sintered at 450~550℃ to obtain boron-doped multi-element polyanion sodium-ion battery cathode material. The introduction of boron and silicon elements in this invention helps reduce raw material costs, improve the electrochemical performance of the material, especially enhancing the structural stability, rate performance, and cycle life of the cathode material, and also lowers the sintering temperature, meeting the requirements for cost reduction and efficiency improvement.

The utility model discloses a kind of sinking flow guide scraping wall type stirring oil drum, it is related to stirring oil drum technical field, including support, motor and barrel body, the bracket side surface installs barrel body fixing frame, the barrel body fixing frame is fixed with barrel body, the bracket bottom installs brake universal wheel, the bracket side surface installs sliding rail, the sliding rail side surface installs sliding frame, the sliding frame side surface installs motor, the motor bottom installs stirring rod, the stirring rod side surface installs stirring shaft, the stirring shaft end installs scraper. Without scraping wall mechanism, suspended solid or colloid in the area close to pool wall can deposit, solidify constantly, form thick silt or scale on wall surface in a long time. The utility model passes through the continuous contact of scraper and barrel wall, scrape all adherend in real time to bottom, make wall surface keep neat, avoid the generation of any stationary layer, guarantee that entire barrel body inside always maintains consistent flow field and mass transfer condition.

The present application relates to the field of high-speed spraying technology, in particular to a supersonic flame spraying process for steam turbine blades. The present application overcomes the problems of insufficient coating bonding strength and poor corrosion resistance of the supersonic flame spraying. The present application uses nickel-coated alumina composite sand for sandblasting pretreatment of the blades to achieve micro-implantation of active nickel; adjusts the ratio of NiCr and Cr3C2-NiCr powders by using double powder feeders to build a gradient structure coating with continuous component change; uses a modified sealing agent containing nano-alumina for vacuum impregnation sealing; and finally obtains finished blades through graded vacuum diffusion annealing. Through surface nickel implantation, gradient structure design and diffusion annealing, the present application realizes metallurgical bonding and thermal stress matching between the coating and the substrate, greatly improving the bonding strength; at the same time, the in-situ ceramicization reaction of the sealing agent eliminates micro-pores, significantly enhancing the corrosion resistance of the coating.

The application provides a carbon fiber precursor solution sampling method, which comprises the following steps: S1. providing a sealed container with a sampler inside, wherein the sealed container is a closable sealed container; and S2. placing the sealed container on a displacement assembly at position one. The carbon fiber precursor solution sampling method adopts automatic sampling, greatly reduces the labor intensity, and is safe and reliable. The medium in the reaction kettle is sealed through the closed sealed cavity and the closable channel between the sealed cavity and the reaction kettle, the sealing property of the high-temperature corrosive medium is ensured, air is prevented from entering the reaction kettle and contacting the high-temperature corrosive medium to generate toxic and harmful substances, the air in the sealed cavity is replaced by inert gas, the sealing property of the high-temperature corrosive medium is ensured, and the sealed container can be disassembled to take out the sampler through the setting of the opening and closing assembly and the tightening of the sealed container, so that the leakage of the toxic medium is avoided.

The utility model provides a kind of composite pipeline support structure, including support piece, support piece can be deformed along the length direction parallel to it, support piece includes support outer plate, connecting plate and support inner plate, the number of support inner plate is multiple, and it is interval setting along the length direction of support outer plate, and form the accommodation space for installing cladding between support outer plate, avoid the interference with clamp, so that cladding can realize larger area cladding on pipeline;Connecting plate is located the part between two support inner plates and is provided with notch;Support piece has first state and second state, in first state, support piece is flat type;In second state, the head of support outer plate is connected, to make support piece form closed structure compatible with different pipe diameter, shape pipeline;Limitation groove is set on support outer plate, for installing clamp, to realize the conversion of support piece from first state to second state and fixed closed structure, improve adaptability, flexibility and universality.

This invention discloses a novel, easy-to-use battery top cover structure, comprising: a substrate with terminals at both ends on its inner side, the terminals having injection-molded edging on their outer surfaces; a brake frame disposed on the lower surface of the substrate; an explosion-proof valve plate fixed inside a pressure relief hole in the middle of the inner side of the substrate, the brake frame having a protective mesh plate corresponding to the explosion-proof valve plate on its inner side; and a patch disposed on the upper surface of the substrate to cover the explosion-proof valve plate. This invention, by incorporating terminals, an insulating pad, a second conductive sheet, a first conductive sheet, an adjusting block, and a fixing seat, allows for timely detection of the explosion-proof valve plate before it breaks, facilitating early warning and manual maintenance, thus improving the convenience of repair. By incorporating a limit ring, a ceramic washer, and a connecting ring block, this device significantly improves the contact effect between the terminals and the sealing ring during installation, ensuring a secure seal around the terminals during long-term use.

The application discloses a semi-airborne full-time electromagnetic forward method based on an Octree grid, which performs spatial discretization on time-domain Maxwell equations, thereby effectively reducing unknowns of equations to be solved. For full-time electromagnetic field numerical simulation, the application combines the high calculation precision of the second-order backward Euler method with the high OFF-Time calculation efficiency of the model reduction algorithm, adopts the second-order BDF and the model reduction algorithm to respectively solve ON-Time and OFF-Time time-domain control equations, forms a joint algorithm to realize simulation of semi-airborne time-domain electromagnetic full-time response, and finally completes the forward calculation process. Through numerical simulation verification, in the full-time transient electromagnetic forward process, the application can keep small occupied memory and also has higher calculation efficiency, and the calculation precision is not lower than that of other methods.

The invention discloses a method for preparing nitro-mesitylene through a micro-channel nitration reaction. The method comprises the following steps: respectively conveying mesitylene, fuming nitric acid and sulfuric acid to a micro-channel reaction module through a metering pump, and completing nitration reaction within a retention time of tens of seconds to several minutes. The introduction sequence of nitration reaction materials, the reaction retention time and the reaction temperature are cooperatively controlled, the nitration reaction is completed in the microchannel reactor in a continuous flow mode, operation is easy and convenient, safety is high, efficient continuous production can be achieved, meanwhile, emission of three wastes is reduced, and the industrial application advantages of being environmentally friendly and economical are achieved.

This invention discloses an automatic riveting production system for water heater masks, relating to the field of automated water heater production technology. It includes a material placement platform with riveting equipment on each of its adjacent sides and feeding devices on the other adjacent sides. A manual feeding position is provided between the two feeding devices. Each feeding device includes a support and a positioning fixture. The riveting equipment includes a riveting machine, a material handling robot, and a material handling hand. Through the cooperation of these components, automatic riveting of the water heater masks is achieved. During the riveting operation, only one worker is needed to feed materials to both riveting machines, while also having spare time to arrange the riveted masks on the material placement platform. This enables continuous, seamless, and automated production of water heater masks, greatly improving production efficiency. The operation is simple for workers, effectively preventing the production of defective products.

The utility model provides a kind of current transformer and GIS, belong to high voltage switch field.The current transformer includes mutual inductor cylinder and flange, the outside of flange is equipped with gasket by fastener, the height of mutual inductor cylinder protruding from the outside of flange is greater than the height of fastener and gasket protruding from the outside of flange, one end of mutual inductor cylinder is provided with tangent outside fillet and inside fillet passing through spacer ring, the radius of inside fillet is ten times to fifteen times of the radius of outside fillet, the junction of inside fillet and mutual inductor cylinder inside surface is located between the outside surface and inside surface of flange.The GIS includes the current transformer described above.The utility model dispenses with shielding ring, but by the design and optimization of mutual inductor cylinder structure, the end of mutual inductor cylinder can replace shielding ring and play the role of shielding isolation between conducting rod and gasket, screw.

This invention relates to the technical field of emulsion explosive packaging, and more particularly to a processing device for emulsion explosives. A feeding pipe is located in the middle of the machine body, connecting to an external feeding device. A mounting plate is fixedly connected to the top of the machine body, and a cylindrical block is located at the bottom of the mounting plate. The lower end of the feeding pipe passes through the cylindrical block. Symmetrical sliding blocks are provided on the mounting plate, and clamping arc blocks are slidably connected to the sliding blocks. A bidirectional threaded rod is rotatably connected to the mounting plate, and the bidirectional threaded rod is threadedly connected to the sliding blocks. A dual-axis motor is mounted on the mounting plate, and the dual-axis motor is connected to the bidirectional threaded rod. This solution effectively solves the problem of powder splashing and scattering during existing powder bagging processes, ensuring the health of operators and meeting industrial production safety and environmental protection requirements. The dual-axis motor and bidirectional threaded rod drive the clamping arc blocks to clamp the pre-made bag opening, and in conjunction with a piston rod and air cylinder, inflates the airbag block, sealing the gap between the bag opening and the cylindrical block.

A tractor includes: a hydraulic lifting and lowering drive unit 9 configured to lift and lower a three-point linkage mechanism; a load detector 21 configured to swing according to a traction load of an implement; and a mechanical linkage unit 22 configured transmit a swing amount of the load detector 21 to the lifting and lowering drive unit, in which the mechanical linkage unit 22 includes a first linkage mechanism 45 provided on one side in the right and left direction of a vehicle body frame SF and interlockingly linked with the load detector 21, a second linkage mechanism 46 provided on the other side in the right and left direction of the vehicle body frame SF and interlockingly linked with the lifting and lowering drive unit 9, and an operation cable 47 interlockingly linking the first linkage mechanism 45 and the second linkage mechanism 46.

This invention discloses a tooling mold for manufacturing brake discs and a method for manufacturing brake discs. The tooling mold includes an insertion section whose shape matches the shape of the heat dissipation holes and achieves an interference fit after insertion. The end of the insertion section is fixedly connected to a sliding groove via a connecting rod. A sliding plate, which cooperates with the sliding groove, enables position adjustment of the insertion section. This invention offers flexible overall adjustment and can be used for combined adjustment of the spacing for brake discs of different sizes, facilitating operator operation. The method of manufacturing brake discs using this invention reduces the difficulty of drilling holes in carbon-carbon composite brake disc preforms, reducing processing volume; it reduces the time and material consumption required for brake disc vapor deposition; it improves the smoothness of the inner surface of the heat dissipation holes, reducing processing volume and avoiding dynamic imbalance and airflow velocity uniformity issues caused by rough holes; it promotes uniform product material, ensures uniform expansion coefficient, and reduces the probability of product cracking.

The utility model relates to the technical field of vehicle-mounted electric control cover plate die-casting, and discloses a new energy vehicle-mounted electric control cover plate die-casting device which comprises a die-casting device body, a baffle is fixedly connected to the left side of the top of the die-casting device body, a die-casting mechanism is arranged at the top of the die-casting device body, and a base is fixedly connected to the bottom of the die-casting device body. A collecting mechanism is arranged at the bottom of the die-casting device body, the die-casting mechanism comprises a die-casting assembly and a stirring assembly, the die-casting assembly is arranged at the top of the die-casting device body, and during use, through the arranged die-casting mechanism, when a vehicle-mounted electric control cover plate needs to be subjected to die-casting work, a first servo motor drives a first threaded rod to rotate; the hydraulic cylinder pushes the push plate, raw materials in the conveying pipe stably and accurately enter the first die, the right side of the second die makes close contact with the left side of the first die, and the sealing performance of the dies in the die casting process is guaranteed.

The invention relates to an O2-phase lithium cobalt oxide positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion batteries. The preparation method comprises the following steps: S1, uniformly mixing a doped metal source, a sodium source and a cobalt source, sintering, and cooling to obtain a P2-phase precursor; s2, uniformly mixing the P2-phase precursor, a lithium source A and the coating layer precursor, sintering, and cooling to obtain an intermediate A; s3, uniformly mixing the intermediate A and a lithium source B, sintering, and cooling to obtain an intermediate B; and S4, uniformly mixing the intermediate B and a lithium source C, sintering, cooling, washing and drying to obtain the O2-phase lithium cobalt oxide positive electrode material. The O2-phase lithium cobalt oxide positive electrode material with low residual sodium, high structural stability and excellent interface coating performance is prepared through a method of combining gradient ion exchange, gradient temperature control, gradient atmosphere regulation and control and synchronous in-situ coating.

This invention relates to the field of polyethylene insulation materials and discloses a polyethylene cable insulation material and its preparation method. The method includes: (1) blending an antioxidant, an anti-scorching agent, and low-density polyethylene by gravity metering, extruding, and then water-cooling and pelletizing to obtain granules; (2) preheating the granules by gravity metering and then sequentially mixing and impregnating them with a peroxide; the anti-scorching agent is 1,1-diphenylethylene and / or 2,4-diphenyl-4-methyl-1-pentene. The method provided by this invention can prepare a polyethylene cable insulation material with anti-scorching properties and high cleanliness. Furthermore, the performance of ultra-high voltage polyethylene cables above 110KV produced using the polyethylene cable insulation material provided by this invention is stable, and the scorching time is longer. Therefore, the polyethylene cable insulation material provided by this invention is suitable for the production of long-cycle cables.

The application discloses a bidirectional fixed cross interlocking structure and a rotating disc, wherein the bidirectional fixed cross interlocking structure is suitable for a rotating disc comprising a rotating disc body and a support, and comprises a first connecting piece, a second connecting piece and a fixed shaft. The first connecting piece and the second connecting piece are arranged on the two sides of the rotating disc body, and the first connecting piece and the second connecting piece are connected with each other to clamp the rotating disc body therebetween. The fixed shaft passes through the first connecting piece and the second connecting piece in sequence and is connected with the support. The second connecting piece is provided with a positioning protrusion, and the rotating disc body is connected with the second connecting piece through the positioning protrusion, so that the rotating disc body, the first connecting piece and the second connecting piece form a mutually fixed integrated structure, and the integrated structure can rotate relative to the support around the fixed shaft.

The utility model discloses a kind of pigskin jelly quick freezing forming temperature control equipment, belong to quick freezing temperature control equipment technical field, including refrigerator, the inner wall of refrigerator is fixedly connected with column and guide shaft;Mesh plate, the mesh plate is fixedly connected between column, and the upper of mesh plate is placed with mould basin;Supporting assembly, the supporting assembly includes cross bar, the inner wall of both ends of cross bar is fixedly connected with sliding sleeve, and sliding sleeve is slidably sleeved in the outside of guide shaft, the outer wall of cross bar is fixedly connected with positioning rod, the top of the most upper supporting assembly is connected with the jacking end of electric push rod. Through upper die assembly can be covered to mould basin Protection, to be contacted with pigskin jelly upper surface by lower silica gel plate and pigskin jelly and be pressed tightly, avoid its bubble generation in forming process, cause its volume increase, ensure the compactness after pigskin jelly forming, improve its edible taste, avoid pigskin jelly surface bare simultaneously leading to dry metamorphism.

The application discloses a chemical crystallization granulation coupling membrane interface induced crystallization calcium removal system and a calcium removal method, and belongs to the technical field of water treatment. The system comprises a chemical crystallization granulation unit, a membrane interface induced crystallization unit and a microcrystal separation and recycling unit. After preliminary softening of wastewater to be treated by the chemical crystallization granulation unit, the wastewater enters the membrane interface induced crystallization unit, residual calcium ions in the preliminary softening wastewater are enriched in a hydrophilic microzone of the membrane interface, combined with carbonate ions in an induced crystallization reagent, and calcium carbonate microcrystals are generated, the hydrophobic microzone inhibits continuous spreading of the crystals and promotes peeling of the microcrystals; the calcium carbonate microcrystals are separated and concentrated and then recycled to the chemical crystallization granulation unit for recycling. After treatment by the chemical crystallization granulation coupling membrane interface induced crystallization calcium removal system, the concentration of calcium ions in the wastewater is below 10 mg / L. The application realizes calcium removal by coupling of preliminary softening by chemical crystallization granulation and induced crystallization by a membrane, has the advantages of low reagent consumption, recyclable microcrystals and closed-loop operation.

The application discloses an explosion-proof liquid crystal display screen and relates to the technical field of explosion-proof liquid crystal display screens.The explosion-proof liquid crystal display screen comprises a base, a supporting seat fixed on the top of the base, a screen hinged on the top of the supporting seat, an outer frame fixed on the outer wall of the screen, and a square frame slidingly connected to the inner wall of the outer frame.When the square frame is impacted from the front side, the square frame moves towards the outer frame, and the compression of the return spring drives the square frame to move the transmission rod, further drives the L-shaped plate and the large limiting rod to move away from the outer frame.When the large limiting rod is separated from the rotating rod, the rotating rod and the protection plate are rotated under the return action of the large torsional spring, so that the protection plate is counterclockwise rotated to be parallel to the screen.When the screen is impacted from the front side and is tilted backward, the protection plate shields the screen to prevent sparks caused by secondary damage.

The invention belongs to the crossing field of fine chemical engineering, crystal engineering and continuous production technologies, and particularly relates to a process and a device for continuously preparing 1, 3-cyclohexanedione crystals. The method comprises the following steps: respectively introducing a pre-cooled 1, 3-cyclohexanedione monosodium salt aqueous solution and an acidifying agent into a static mixer through a metering pump for mixing, introducing the materials into an aging tank for aging, and carrying out solid-liquid separation on the aged materials to obtain 1, 3-cyclohexanedione crystals. The invention provides a process and a device for continuously preparing a 1, 3-cyclohexanedione crystal, the process and the device are a brand-new continuous acidification crystallization process and system based on a static mixer, and aims to fundamentally eliminate local supersaturation, realize accurate control of the crystal form and morphology of 1, 3-cyclohexanedione and produce a high-quality flaky crystal form product. And the continuity, the stabilization and the high efficiency of the production process are realized.

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a surface cleaning device which comprises a shell and a dust collecting box, a first through hole penetrating front and back is formed in the middle of the shell, a containing groove is formed in the top of the shell, the dust collecting box is contained in the containing groove, and the outer end of the dust collecting box is hinged to the shell. The inner end of the dust collection box is detachably clamped with the shell through a buckle, the dust collection box is of a hollow structure, the dust collection box is provided with a first air outlet and a filtering part, and a cavity of the dust collection box is in butt joint communication with the middle of a cavity of the first through hole through the filtering part. In addition, the utility model further provides a surface cleaning system, in the dust collection process, even if wind influence exists, the relative position between the dust collection box and the shell is kept fixed, gaps are avoided, and dust collection work is more thorough and efficient. Dust attached and collected to the filtering part of the dust collecting box can be dumped and cleaned by turning over the dust collecting box, and cleaning is convenient.

This utility model relates to the field of road and bridge construction technology, and in particular to a fixing structure for repairing road and bridge cracks. It includes a cylinder and a road surface. A crack groove is provided at the crack in the road surface for placing the cylinder. A top groove is formed above the crack groove. A vertically placed support is slidably installed inside the cylinder. A waterproof plate is fixedly connected to the top of the support after it slides through the cylinder. An inner cavity is formed at the top of the cylinder. Connecting rods are rotatably connected to both sides of a section of the support located in the inner cavity. A pull rod is rotatably connected to the end of the connecting rod away from the support. A fixing rod is provided at the end of the pull rod away from the connecting rod. This application improves construction efficiency and reduces difficulty through convenient adjustment of the fixing structure. Furthermore, the design of barbs and waterproof grooves enhances structural stability and waterproof performance. The mechanical structure under stress also prevents further cracking, ensuring the quality of the repair work in terms of construction efficiency and long-term stability of the repair effect.

The application discloses a method for modifying and adjusting hot-state desulfurization slag of steelmaking, which comprises the following steps: mixing hot-state molten desulfurization slag and casting residue or mixed liquid casting residue in a hot-state adjusting and conditioning pool, and changing the caking and difficult-to-handle characteristics of the molten desulfurization slag into easy-to-handle modified slag for subsequent disposal. The application solves the technical problem of large lumps of slag and iron in existing steel enterprises, and has strong operability and no safety problem.