960results about How to "Increased durability" patented technology

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

The application relates to the technical field of polished rod sealing devices of sucker rod wells, in particular to a combined intelligent adjusting flexible polished rod wellhead sealing device, which comprises an air charging sealing device clamped on a flexible polished rod; the air charging sealing device comprises an air charging and discharging pump, a hard outer wall and an annular air bag; the annular air bag is arranged between the hard outer wall and the flexible polished rod; the air charging and discharging pump is arranged outside the hard outer wall and is used for controlling air charging and discharging of the annular air bag, so that the annular air bag tightly holds or releases the flexible polished rod. The air charging and discharging of the annular air bag is controlled by the air charging and discharging pump, the tightly holding and releasing of the annular air bag to the flexible polished rod can be flexibly realized, the state can be adjusted according to actual working conditions, and the convenience and adaptability of sealing and clamping operations are improved.

The utility model discloses a vehicle front end connecting module and vehicle with it, include: left front connecting beam and right front connecting beam, left front connecting beam and right front connecting beam are suitable for installing in the frame and along the width direction arrangement of frame, left front connecting beam front end and the front end of right front connecting beam are suitable for installing front anti -collision pole, left front connecting beam front end and right front connecting beam front end between suitable for accommodating cooling module, front crossbeam subassembly, one end of front crossbeam subassembly is connected in left front connecting beam's front end and is connected in the front end of right front connecting beam with another end, strengthen crossbeam, strengthen crossbeam is connected in left front connecting beam and the bottom of right front connecting beam, wherein, left front connecting beam and right front connecting beam and strengthen crossbeam are all castings, and the distance between left front connecting beam front end and right front connecting beam front end is 1050mm~1150mm. According to the vehicle front end connecting module of utility model embodiment, can accommodate greater cooling module, has the advantages such as high integrity, promotes structural strength, light weight.

The basement outer wall crack controllable induction structure device disclosed by the utility model has the advantages that the L-shaped wall-hanging frame and the side frame are combined and fixed, stable constraint is formed on the wall body, the crack is guided to generate in the preset area, and the crack direction is accurately controlled through the angle adjustment of the crack induction mechanism.

This invention belongs to the field of health pillow technology, and specifically provides an adaptive height-adjustable support frame and the adaptive height-adjustable sleep health pillow constructed therefrom. The support frame includes a base plate, a compensation edge plate, and a support panel. These three plates form an approximate "Z" structure under the action of a reset elastic element and a hinge element. The support panel is configured as a support surface that can switch between an inclined position and a flat position relative to the base plate. The health pillow includes a pillow cushion, a pillowcase, and the aforementioned support frame. The pillow cushion is installed on the support panel of the support frame, and the pillowcase is placed over the pillow cushion and the support frame. This health pillow structure can not only automatically adjust its vertical displacement according to the pressure of the head and neck, but also adaptively adjust the support surface according to the sleeping posture to ensure that it is continuously and closely fitted to the physiological curve of the human head and neck, improving the support force for the neck and head, maintaining the physiological curvature of the neck, and relieving shoulder and neck pain with long-term use, reducing the probability of stiff neck, neck fatigue, and chronic strain.

This utility model relates to a cutting blade, belonging to the technical field of ultrasonic probe manufacturing equipment. The cutting blade is disc-shaped and used for rotary cutting of an ultrasonic probe to form piezoelectric array elements. The cutting blade includes a blade body and multiple gradient layers disposed on the outer side of the blade body. The multiple gradient layers are connected sequentially along the radial direction of the blade body, and the thickness of each gradient layer gradually decreases radially outward. Adjacent gradient layers are connected in a stepped manner, and the outer edge of each gradient layer away from the rotation center axis of the cutting blade forms a cutting edge, so that the cutting blade has multiple annular cutting edges arranged at radial intervals. The array elements of the probe cut by this cutting blade are pyramid-shaped, with narrow ends and wide bottoms, which ensures that the formed ultrasonic probe piezoelectric array elements are uniform in size, neatly arranged, and have better stability; effectively improving the resolution and stability of probe imaging.

The utility model belongs to the technical field of bedding, specifically discloses a combined quilt, which comprises at least two quilt bodies from top to bottom, and the edges of the quilt bodies are provided with zippers, the quilt bodies are detachably connected through the zippers to form a combined quilt, a shielding edge is arranged around the uppermost quilt body, and the zipper on the uppermost quilt body is located between the shielding edge and the quilt body, when the quilt bodies are connected through the zippers to form the combined quilt, the shielding edge naturally falls to cover the side edges of the quilt bodies and the zippers of the combined quilt, the zippers are completely hidden, and the feeling of a standing quilt is presented, which not only makes the appearance of the quilt more neat and beautiful and the visual effect better, but also effectively prevents dust from entering the gaps of the zippers, reduces the jamming problem caused by dust accumulation of the zippers, and further improves the integrity, durability and protection performance of the product.

The utility model discloses a curtain wall glass anti -impact buffer device, including glass mounting structure and keel connecting plate, glass mounting structure includes the fixed frame, the fixed frame rear side is provided with the sliding part, the buffer support subassembly is fixedly installed on the front side surface of keel connecting plate, the buffer support subassembly includes horizontal guide rail, the sliding part sliding installation is in horizontal guide rail, the horizontal guide rail front end is provided with vertical guide rail, the vertical guide rail between slidingly is provided with the support wedge, the fixed frame rear side surface bottom integral arrangement has the linkage wedge, the linkage wedge with support wedge is respectively provided with the inclined plane structure of mutual adhesion, the support wedge is connected with horizontal guide rail through the elastic buffer reset piece, through the inclined plane cooperation structure of linkage wedge and support wedge, the glass gravity is converted to vertical and oblique support transmission from traditional side connection transmission, realizes glass gravity sharing, realizes buffer and gravity sharing function.

This invention discloses a preform for the hot top of a crystallizer specifically for semi-continuous casting of aluminum-lithium alloys and its manufacturing method. Addressing the problems of severe interfacial reactions between existing refractory materials and molten aluminum-lithium alloys, resulting in poor forming quality of semi-continuous casting ingots, this invention employs a gradient composite structure design: lithium aluminate is introduced into the working layer to thermodynamically suppress interfacial reactions by increasing the intrinsic lithium chemical sites; the insulation layer contains β-lithium nepheline and lithium aluminate to improve the insulation performance and thermal shock resistance of the hot top. Furthermore, by using a gradient distribution of lithium compound concentrations and types, combined with a multi-stage sintering process, the interlayer bonding strength is improved. Results show that this invention not only significantly reduces the interfacial reaction between the molten aluminum-lithium alloy and the hot top during semi-continuous casting, improving the forming quality of aluminum-lithium alloy ingots, but also extends the service life of the preform.

The application discloses a quaternary solid waste-based soil stabilizer (GSCP) for a base layer, which is composed of slag (GGBFS), steel slag (SSA), calcium carbide slag (CS) and phosphogypsum (PG) and has a weight ratio of GGBFS:SSA:CS:PG=56:24:12:8. The stabilizer forms C-S-H colloid and ettringite (AFt) through alkaline activation and sulfate activation, does not need to add cement or chemical activator, is used for stabilizing silty clay and steel slag mixed soil, and significantly improves the unconfined compressive strength, splitting tensile strength, water stability and freeze-thaw resistance. Compared with a traditional cement-based stabilizer, the application reduces carbon emission by 82% and cost by 31.25%, provides a low-carbon and economical solution for road engineering, and is suitable for the base layer and the subbase layer of a secondary road or above.

This application provides a self-healing polyurethane material, its preparation method, and its applications, relating to the field of polymer materials technology. The material uses a polyurethane matrix constructed from polyols and polyisocyanates, and introduces aromatic polyaldehyde compounds to form reversible dynamic bond structures with hydrazine compounds, thereby endowing the material with excellent self-healing properties. By controlling the type of chain extender and the melt blending process conditions, the material can achieve crack healing and restore mechanical properties after damage, while also possessing good flexibility, processability, and stability. The preparation process of this application is simple and the conditions are mild. The resulting material can be widely used in coatings, seals, and elastomers, significantly improving material service life and reliability.

The utility model discloses a dual -purpose screwdriver with detachable cutter cover, including screwdriver body and detachable connection setting the cutter cover unit on screwdriver body, the both ends of screwdriver body are provided with torque adjusting assembly and rigid output assembly respectively, torque adjusting assembly includes: torque cavity, axial opening is in screwdriver body, elastic part is set up in torque cavity, torque joint, part extends to screwdriver body outside, and its outer wall is equipped with spiral guide portion, guide column is fixed in torque cavity inner wall, and is rotatably connected with spiral guide portion, the cutter cover unit detachable cover is combined in torque adjusting assembly or the end of rigid output assembly, the utility model discloses structure design is reasonable, is provided with torque adjusting assembly and rigid output assembly through setting, has realized the diversification of screwdriver function, has met the demand of different tightening operation to torque, and cutter cover unit detachable is convenient for user to hold operation, and the use experience is promoted.

The utility model provides a kind of sandwich waterproof thermal insulation structure of outdoor stair, not only ensure the continuity of outdoor stair insulation layer and waterproof layer laying, effectively protect the working performance of structure layer, also improve construction efficiency, avoid the construction cycle extension problem possibly caused by complex due to height difference change. The leveling layer is fixed on the upper surface of roof panel, and the stair surface layer plate is fixed on the upper surface of stair tread plate;The waterproof layer and the insulation layer are arranged between the leveling layer and the stair tread plate, the waterproof layer is fixed on the upper surface of the leveling layer, the insulation layer is fixed on the upper surface of the waterproof layer, and the stair tread plate is fixed on the upper surface of the insulation layer;It further includes vertical planting, vertical planting is sequentially implanted roof panel, leveling layer, waterproof layer, insulation layer and stair tread plate;Longitudinal reinforcement is embedded in the insulation layer, and the longitudinal reinforcement is fixed with the vertical planting in the insulation layer;Bidirectional steel mesh is embedded in the stair tread plate, and the bidirectional steel mesh is fixed with the vertical planting in the stair tread plate.

The utility model discloses a purpose lies in providing a kind of side hanging type guide rail conveying assembly of mute low abrasion's clothing assembly line, by the way of setting elastic material layer between hanging guide rail part on supporting guide rail and walking roller, to greatly reduce the abrasion between components, the durability and reliability of conveying system are promoted, while the noise that can be more fully absorbed when roller under external load state is supported is produced when moving or jumping collision occurs. The component contains supporting guide rail, drive chain and lateral mounting rack;Supporting guide rail contains main body supporting part and hanging guide rail part, walking roller is provided on lateral mounting rack, the walking roller can be rotated and walked along the hanging guide rail part;Elastic material layer is also covered and set on the hanging guide rail part;The lateral mounting rack local with the link of drive chain is connected and fixed, so that drive chain moves and can drive the lateral mounting rack moves relative to supporting guide rail.

This invention provides a QPQ surface strengthening method for flexible and rigid wheels in harmonic reducers, comprising the following steps: after machining the flexible or rigid wheel, it is sequentially degreased, cleaned, dried, and preheated; the preheated flexible or rigid wheel is nitrided to form a nitrided layer on its surface; the surface of the flexible or rigid wheel is treated mechanically or by tumbling; the polished flexible or rigid wheel is placed in molten oxide salt for oxidation treatment to form an oxide layer on the surface of the nitrided layer; after the oxidized flexible or rigid wheel is air-cooled, it is immediately rinsed with clean water and dried with hot air, and then coated with anti-rust oil. Compared with the prior art, this invention uses low-temperature salt bath nitriding and oxidation treatment, the QPQ process is short, has fewer process steps and is easy to control, and the salt bath can be recycled. The surface hardness of the workpiece reaches 800-850 HV, and the wear rate is reduced by more than 70% compared with the traditional tempering process, significantly extending the service life of the workpiece.

The application discloses a kind of deep melting interlayer development area rigid pile composite foundation structure design method, it is related to rigid pile composite foundation field, including the following steps: step one, in the existing rigid pile bearing capacity calculation process, front-end increase subgrade-ground temperature field analysis;Step two, increase groundwater analysis;Step three, determine the compression modulus of the soil layer of seasonal freeze-thaw layer, (water-rich) melting interlayer, permafrost layer, bearing capacity characteristic value, check the single pile bearing capacity characteristic value of different positions in the cross section of roadbed using different pile length, pile diameter, pile body stiffness material;Step four, carry out zoned unequal design, adjust pile length, pile diameter, pile body stiffness, so that the range of all pile single pile bearing capacity characteristic values in cross section is lower than design allowable value.The application effectively optimizes pile foundation design, reduces material waste, reduces engineering cost, while ensuring the safety and stability of structure.

The application belongs to the technical field of proton exchange membrane fuel cell, and relates to a hydrophobicity-adjustable alloy nanotube array electrode for fuel cell and preparation and application thereof. Specifically, the application comprises preparation of metal nanotube array, alloying and hydrophobization of the metal nanotube array, and assembly of the membrane electrode. First, a metal nanotube array is constructed on a substrate surface through a two-step hydrothermal method; then, a hydrophobic substance is introduced into the metal nanotube array by means of immersion or ultrasonic spraying; then, pyrolysis is performed to realize alloying and hydrophobization of the nanotube array; finally, the nanotube array is transferred to a proton membrane, and the membrane electrode is cleaned. The membrane electrode can be applied to a proton exchange membrane fuel cell. The hydrophobicity-adjustable nanotube array electrode prepared by the application has the advantages of high catalyst activity and stability, low platinum loading, good water management, and easy scaling-up.

A tool integrated cabinet for rail transit vehicles includes a shell, a pullable support frame, a damping universal roller and a folding seat storage cabin. The support frame is linearly guided through the sliding cooperation of a T-shaped guide rail and a clamping block. The stability of the support frame in a vehicle vibration environment is improved by the antiskid rubber material and damping design of the roller. The inside of the support frame adopts a modular partition structure. A fire extinguisher is fixed through the placement grooves of first and second support plates. The bottom plate cooperates with a guide groove to realize the quick taking and placing of an escape ladder. A groove is internally provided with a slide rail type folding seat storage cabin. The folding seat storage cabin is linked with a storage guide plate through a handle passage to realize the vertical partition management of emergency equipment and auxiliary tools. In addition, the conical self-locking structure and spring elastic pre-tightening mechanism of the plug rod and plug plate can effectively prevent the accidental sliding of the support frame. The combination innovation of the T-shaped guide rail, damping roller and folding cabin integration significantly enhances the safety and convenience of rail transit emergency equipment management.

This application provides a seated forward flexion measuring device, relating to the field of seated forward flexion measurement technology. The device includes a base and a support rod above the base. Two protective members are provided on the base, each with a first receiving groove at its top. A sliding groove is formed at the top of the support rod, and two measuring rods are placed on top of the support rod. One measuring rod has a threaded groove at its end, and the other measuring rod has a threaded rod fixedly connected to its end, with the threaded rod and threaded groove threaded together. This application uses two measuring rods as measuring rods, and both measuring rods are detachably mounted on the top of the support rod. When not in use, they can be removed from the top of the support rod and stored in the first receiving groove, thus protecting the measuring rods during transportation and storage, greatly reducing damage caused by impacts, and improving the durability and reliability of the device.

The utility model discloses a kind of metal composite material walkway plates, comprising: footpath cantilever support, footpath cantilever support is spacedly arranged multiple along the length direction of prefabricated beam, the fixed end of multiple footpath cantilever support is fixedly connected with prefabricated beam;Steel grating frame, steel grating frame is multiple, the length direction of each steel grating frame Two ends are respectively overlapped and fixed on adjacent two footpath cantilever supports;Continuous no-alkali glass fiber felt reinforced polyurethane rigid foam plate, polyurethane rigid foam plate is multiple, and it is flatly fixed on multiple steel grating frames;Guardrail, guardrail is fixed on the cantilever end of footpath cantilever support.The footpath step plate is combined use by steel grating frame and polyurethane rigid foam plate, can greatly improve the durability of footpath step plate, and has the advantages of light weight, high strength.

A drawer includes a front panel (4), a bottom panel, a rear wall, and two side frames (3) forming an interior space of the drawer, the interior space being open at the top and closed at the bottom by the bottom panel, wherein the side frames (3) and the front panel (4) are connected to each other by respective mounting devices (1), wherein the side frames (3) include, at least in the area facing the front panel (4), a bottom channel (32) for receiving the bottom panel, wherein the bottom channel (32) includes at least one generally horizontal upper portion (321) parallel to the bottom panel and a generally vertical portion (322) arranged perpendicularly thereto, wherein each The assembly device (1) includes at least one fixing device (11) fixed to the side frame (3) and a support device (12) fixed to the front panel (4). The support device (12) includes a locking portion (124) and at least one support surface (121). Each assembly device (1) includes a locking first position (P1) in which the fixing device (11) or the support device (12) is fixed or locked together, and includes a pre-locking second position (P2) in which the fixing device (11) and the support device (12) can be separated from each other or locked together. At least one support surface (121) is supported on a support surface (31) formed by the upper part (321) of the bottom channel (32) in both the first position (P1) and the second position (P2).

This invention discloses a self-cleaning radiative cooling coating based on biomass carbon quantum dots, its preparation method, and its application. The coating comprises a polymer film-forming resin, carbon quantum dots, and hollow glass microspheres; wherein the mass ratio of the polymer film-forming resin to the filler is 1:(0.1-0.5), and the mass ratio of the hollow glass microspheres to the carbon quantum dots is 1:(0.05-0.2). This invention synergistically enhances solar reflectivity through the photoluminescence properties of carbon quantum dots and the scattering properties of hollow glass microspheres, while simultaneously utilizing the synergistic effect of fluorinated resin and modified hollow glass microspheres to endow the coating with superhydrophobic self-cleaning function. A single layer of this coating can achieve a solar reflectivity >92%, mid-infrared emissivity >94%, and contact angle >150°, possessing both efficient daytime radiative cooling and long-lasting self-cleaning performance. It is particularly suitable for passive heat dissipation of outdoor equipment such as new energy vehicle charging piles, and features simple process, environmental friendliness, and excellent performance.

The invention relates to a detection method of a medicine for dispelling wind and eliminating dampness. The detection method comprises the following steps: thin-layer identification of a notopterygium root medicinal material, thin-layer identification of a radix angelicae pubescentis medicinal material, thin-layer identification of a radix saposhnikoviae medicinal material, thin-layer identification of ligusticum and ligusticum wallichii medicinal materials, and thin-layer identification of a honey-fried licorice root medicinal material. Through methodological investigation, the detection method has the effects of strong specificity, good durability, clear spots after thin layer expansion, satisfactory separation degree and the like, can effectively control the product quality condition, improves the product quality detection standard, and ensures the product quality.

The utility model belongs to the technical field of geotechnical construction device, especially relate to a geotechnical seepage prevention device. The geotechnical seepage prevention device, characterized by: including warp knitting grid, warp knitting grid is woven by a plurality of longitudinal grey cloth arranged in sequence and a plurality of horizontal grey cloth arranged in sequence, horizontal grey cloth is woven together with optical fiber, and horizontal grey cloth or longitudinal grey cloth surface is sprayed with polyurea resin layer. The utility model has the beneficial effects that: adopt warp knitting grid and resin combination as seepage prevention layer, have higher anti -aging ability and durability, and the optical fiber is implanted in the seepage prevention layer, can be positioned the damaged position when the seepage prevention layer appears the damage, and carries out the quick repair.

This invention discloses a concrete mix design and manufacturing method for underground engineering concrete in a coupled environment of underground environment and load, relating to the field of underground engineering concrete technology. It aims to address the problem that traditional concrete mix design does not fully consider the coupling effect of underground environment and load. The underground environment includes groundwater erosion, wet-dry cycle, and temperature fluctuation; the load includes stress ratio. α s Dynamic load frequency and dynamic load amplitude α d This leads to technical problems such as insufficient erosion resistance, crack resistance, and mechanical stability of concrete, resulting in a short service life. This mix design is based on quantitative analysis of coupled environmental parameters. With cement, composite admixtures, recycled aggregates, modifiers, water, and additives as core components, the basic mix proportion is determined through a mapping model between "environment-load" coupled parameters and component content. The target mix proportion is then obtained through orthogonal experimental optimization. The manufacturing method includes four core steps: raw material pretreatment, graded mixing, gradient curing, and coupled environmental simulation curing.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

This invention provides an operating device for welding the upper chord members of a hollow ball net frame. Installed on the diagonal web members of the net frame, it includes a support component, scaffolding boards, and a safety rope. The support component comprises multiple hook-type suspension members made of threaded steel, with both ends bent in the same direction to form a hook structure. The hook-type suspension members are initially placed on the chord members and slide along them under gravity and pressure, entering the intersection area between the chord member and the ball joint, where they are constrained by the geometry of this area, achieving stable support. The scaffolding boards are installed on the support component and include at least two parallel planks. One end of the safety rope is connected to the worker's safety belt, and the other end is fixed to a transverse chord member of the ball net frame. This invention is easy to install, structurally stable, and improves the safety and construction efficiency of high-altitude operations on ball net frames.

The utility model discloses a kind of high-strength framework structures of solid wood composite door, including door body, upper frame and lower frame are separately provided on door body, outer frame and inner frame are separately provided on the both sides of door body, rectangular tubular crosspiece is equipped in the middle of outer frame and inner frame, fixed block is equipped in the middle of crosspiece, threaded hole is vertically equipped in the middle of fixed block, main support rod is equipped in threaded hole, a plurality of I wheels are equipped on the main support rod of crosspiece up and down, vice support rod connection inner frame and outer frame are equipped on the both sides of I wheel.The utility model has the beneficial effects that: the high-strength framework structure of solid wood composite door of the utility model utilizes the design of advanced metal and wood combination, guarantees the appearance and firmness of door body, provides excellent compression resistance, corrosion resistance and deformation resistance performance;The utility model improves the strength and stability of door body in compression resistance, bending resistance, tensile resistance and other aspects by optimizing internal support frame, reasonably distributing stress, selecting high-strength material and strengthening connecting part.