43results about How to "Good deformability" patented technology

The invention relates to the technical field of metal materials, in particular to a high-strength steel material for mine roadway support and a preparation method thereof, and the high-strength steel material comprises the following components in percentage by weight: 0.04 to 0.10 percent of C, 0.15 to 0.45 percent of Si, 1.20 to 1.80 percent of Mn, 0.20 to 0.50 percent of Cu, 0.15 to 0.40 percent of Cr, 0.10 to 0.35 percent of Ni, 0.08 to 0.25 percent of Mo, 0.015 to 0.045 percent of Nb, 0.03 to 0.08 percent of V, 0.008 to 0.025 percent of Ti, 0.005 to 0.020 percent of RE and the balance of Fe. The preparation method comprises the steps of smelting and refining, continuous casting, heating, rough rolling, finish rolling, segmented controlled cooling and medium-temperature tempering (450-550 DEG C), R is larger than or equal to 620 MPa, A is larger than or equal to 18%, the yield ratio is smaller than or equal to 0.90, KV at 0 DEG C is larger than or equal to 100 J, and the deep-well high-stress roadway support is suitable for deep-well high-stress roadway support.

This invention relates to the field of solid-state battery technology, and particularly to a composite solid-state electrolyte material, its preparation method, and its application. The composite solid-state electrolyte material contains a crystalline phase substance with the general chemical formula: B%A a RE b X 1 c D g +C%A d M e X 2 f D h Where A represents charge carriers; RE represents rare earth elements; M represents metallic elements; X represents... 1 X 2 D is a halide anion; A is an anion doping element or group; a RE b X 1 c D g and A d M e X 2 f D h It is a crystalline phase substance; B% is A a RE b X 1 c D g The mass fraction of the composite solid electrolyte material; C% is A d M e X 2 f D h The mass fraction of the composite solid electrolyte material is defined as follows: 0 ≤ a ≤ 3, 0 < b ≤ 1, 0.5 < c ≤ 12, 0 < d ≤ 5, 0 < e ≤ 2, 1 < f ≤ 20, 0 ≤ g ≤ 4, 0 ≤ h ≤ 5; 85 < B + C < 98, 10% < B% ≤ 85%; 10% < C% ≤ 85%, 0.2 ≤ C / B ≤ 10. The composite solid electrolyte material of this invention includes crystalline and amorphous phase components, giving it high ionic conductivity. The use of moisture-resistant non-metallic halide components instead of traditional halides and oxyhalides in the raw materials also provides it with good air stability.

The utility model provides a carbonization furnace waste heat recycling device, which relates to the technical field of waste heat recovery and comprises a shell, a water inlet pipe and a water outlet pipe are fixedly mounted at the bottom and the top of one side of the shell in a central symmetry manner, a gas inlet pipe is fixedly mounted at one end of the shell, an exhaust pipe is arranged on the inner wall of the gas inlet pipe, and a gas outlet pipe is fixedly mounted at the other end of the shell. A filter screen plate is installed on the inner wall of the air inlet pipe, one end of the exhaust pipe is connected with one side of the filter screen plate in an abutting mode, and the auxiliary sealing device is connected with the connecting position of the exhaust pipe and the air inlet pipe in an abutting mode through a rubber ring so as to seal the portion between the exhaust pipe and the air inlet pipe. The rubber air bag has good deformability, when the outer surface of the rubber air bag completely abuts against the connecting position of the exhaust pipe and the air inlet pipe, the rubber air bag can seal the portion between the exhaust pipe and the air inlet pipe, and heat waste caused by the fact that high-temperature smoke escapes from the connecting position of the exhaust pipe and the air inlet pipe is prevented.

The utility model discloses a kind of heat exchange plates, including heat exchange plate main body, the heat exchange plate main body is at least partially arranged between the first side of two adjacent battery monomers, the first side is the large face of the battery monomer;The part of the heat exchange plate between the first side is provided with cavity structure, multiple support portions are spaced apart along the height direction of the heat exchange plate, and accommodating cavity is formed between adjacent two support portions, the wall thickness of the accommodating cavity one side is L1, the width of the accommodating cavity is L2, the range of L1 / L2 is 0.1-1.The heat exchange plate of the utility model can not only meet the strength needs of heat exchange plate, but also improve the deformation capacity of heat exchange plate, so that the deformation capacity of heat exchange plate is better, and the damage probability when battery monomer expands is reduced.The utility model further discloses a kind of battery pack.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The present application provides a multi-stage energy dissipation flexible inflatable arch structure with shock wave clipping capability, which adopts a multi-stage energy dissipation mode to enhance the protection performance, and adopts an inflatable structure, thereby being capable of maintaining high mobility while improving the explosion shock protection performance. The multi-stage energy dissipation flexible inflatable arch structure comprises a support arch and an inflatable arch. The support arch is a double-layer arch rod structure comprising two groups of upper and lower arch rods. A plurality of inflatable cells are arranged circumferentially between the two groups of arch rods to form the inflatable arch. The inflatable cells comprise low-pressure cells and high-pressure cells. The low-pressure cells and the high-pressure cells are arranged alternately. The inflatable cells and the double-layer arch rod structure are multiphase composite to form a "rigid-flexible" cooperative resistance mechanism, which can improve the structure collapse threshold. Moreover, the plurality of inflatable cells are arranged between the double-layer arch rod structure to form a non-uniform stiffness arch space. Macroscopically, the shock wave energy is fully consumed in a multi-stage steady state through stiffness regulation, thereby enhancing the protection performance.

The application relates to the technical field of children's products, in particular to a children's carrier. The children's carrier comprises a shoulder strap, the shoulder strap comprises a first shoulder part and a second shoulder part, the first shoulder part is provided with a first connecting piece; the second shoulder part is arranged in parallel with the first shoulder part along a transverse direction, the second shoulder part is provided with a second connecting piece, the second connecting piece is configured to be connected with the first connecting piece, so that the second connecting piece and the first connecting piece have a connected state, and the second connecting piece is configured to be separated from the first connecting piece, so that the second connecting piece and the first connecting piece have a separated state; wherein the first shoulder part and the second shoulder part are close to each other along the transverse direction, so that the first shoulder part and the second shoulder part both have a concave structure. The shoulder strap of the children's carrier provided by the application meets the ergonomic design and has high comfort.

The application discloses a model glue for making a three-dimensional copper relief by forging and a preparation method of the model glue. The preparation method of the model glue is as follows: taking 3-5 parts of paraffin, 2-3 parts of butadiene rubber and 2-3 parts of aluminum silicate fiber as raw materials according to mass fraction; first, 2.2-3.5 parts of paraffin are put into a first working cavity of a mud refining machine and are refined and pressed into flaky particles, and then the flaky particles are put into a second working cavity of the mud refining machine; then, 1.8-2.2 parts of butadiene rubber are put into the second working cavity of the mud refining machine and are refined and kneaded together with the paraffin into a soft paste; after that, 1.8-2.2 parts of aluminum silicate fiber are added into the paste and are refined and kneaded together with the paste until the aluminum silicate fiber is evenly distributed in the asbestos mixed paste; after that, the remaining paraffin, the remaining aluminum silicate fiber and the remaining butadiene rubber are sequentially added into the asbestos mixed paste and are refined and kneaded, and then the model glue is obtained. The model glue has stronger deformation and stretching performance, has a wider use range without any additional conditions, does not need to be heated when being repeatedly used, and has incomparable beneficial effects compared with the prior art.

This invention relates to the field of robotics, and in particular to a multi-segment parallel crawling robot for multi-curvature pipe corridors. The robot comprises at least three segments connected in series, with adjacent segments sharing a platform. Each platform has two symmetrically arranged mechanical legs for gripping pipes. Each segment includes a parallel mechanism connecting two platforms, which drives relative movement between the two connected platforms. This invention employs a multi-segment parallel connection method, increasing the overall structural freedom and reliability. It can flexibly bend according to changes in pipe curvature, thus smoothly passing through continuous curved pipe sections, enabling efficient passage and stable operation of the robot in complex pipeline environments.

The application provides a preparation method of a high-beryllium-content beryllium copper alloy material, which comprises the following steps: melting metal raw materials containing pure copper and a beryllium copper master alloy to obtain an alloy liquid, casting the alloy liquid to obtain an ingot, uniformly treating the ingot to obtain a homogenized casting blank, hot-rolling the homogenized casting blank to obtain a hot-rolled blank, annealing the hot-rolled blank to obtain an annealed blank, performing a cyclic "cold rolling-intermediate annealing" process on the annealed blank, and finally performing finish rolling and product annealing on the alloy strip to prepare the high-beryllium-content beryllium copper alloy material. The method can solve the problems of the second phase component of the high-beryllium-content strip being inconsistent, the strip being cracked, side-bent and wrinkled, and a large number of processing passes in the prior art.

The utility model provides a kind of flexible anti-collision traffic safety facilities, it is related to traffic safety facilities technical field, the flexible anti-collision traffic safety facilities includes buffer assembly, mounting rack plate and support mounting frame;Buffer assembly includes buffer box frame and is installed in the buffer pad of buffer box frame;Buffer box frame and support mounting frame are respectively installed in the two sides of mounting rack plate opposite;Buffer pad exposes buffer box frame in the side of departure mounting rack plate, is equipped with honeycomb hole in buffer pad.In the scene of vehicle collision, due to the comprehensive influence of various factors, the impact intensity of vehicle and the device often presents complex change and inconsistent situation, the flexible anti-collision traffic safety facilities provided by the utility model can protect vehicle from serious loss as far as possible in the moment of vehicle impact, maximum degree guarantees personnel safety and reduces property damage degree.

The utility model relates to a polyurea anti-seepage mask rockfill dam structure which comprises a rockfill dam body, a padding layer and a polyurea anti-seepage structure, the rockfill dam body is provided with an upstream water retaining dam face and a downstream dam face, a toe board is arranged at the bottom of the upstream water retaining dam face, and a wave wall is arranged on one side of the top of the upstream water retaining dam face; the padding layer comprises a transition material area, a padding material area and a protective layer which are sequentially laid on the upstream water retaining dam face, and the protective layer comprises one of rolling mortar, an extrusion side wall or a rollover fixed slope. The polyurea anti-seepage structure is laid on the surface of the protective layer, one side of the polyurea anti-seepage structure is connected with the toe board, the other side of the polyurea anti-seepage structure is connected with the wave wall, the polyurea anti-seepage structure comprises a polyurea anti-seepage layer and geotechnical cloth, and the geotechnical cloth serves as an isolation layer to be laid between the protective layer and the polyurea anti-seepage layer. According to the polyurea anti-seepage face rock-fill dam structure, the problem of seepage prevention of the polyurea application and the face rock-fill dam surface can be effectively solved.

The present application relates to the technical field of fiber reinforced geopolymer, and particularly discloses a fiber reinforced geopolymer and a drainage pipeline prepared from the same. The fiber reinforced geopolymer comprises mineral powder, fly ash, quartz sand, alkali activator, fiber, latex powder and rubber powder. The mineral powder and the fly ash are sequentially added, stirred at low speed, and mixed uniformly. While stirring, the fiber is slowly added and dry-stirred, then the quartz sand and the rubber powder are added, and water is added to stir uniformly. The latex powder is dissolved in water after being added, forms a coating layer to wrap the surface of the fiber or the geopolymer raw material, changes the interface characteristics of the fiber and the geopolymer matrix, slows down the occurrence of the polymerization reaction, makes the mechanical properties of the EGC material decrease, improves the interface bonding between the fiber and the geopolymer matrix, forms a structure of the synergistic effect of the fiber-latex powder-geopolymer matrix, increases the fracture energy of the fiber reinforced geopolymer, and improves the bending toughness of the fiber reinforced geopolymer.

This invention provides a method for optimizing the composition and predicting the mechanical properties of high-strength deformable rare-earth magnesium alloys based on machine learning, as well as a computer-readable storage medium. The method includes the following steps: S1. Collecting magnesium alloy data and corresponding mechanical property data, constructing an alloy database, and cleaning and standardizing the data to construct a feature matrix containing compositional and process characteristics; S2. Based on the feature matrix, analyzing the influence of each compositional and process characteristic on preset mechanical property indicators, and identifying the key influencing factors affecting each mechanical property indicator; S3. Training a machine learning prediction model and performing collaborative multi-objective optimization to obtain an optimized solution set that meets the preset performance objectives; S4. Within a preset compositional range, designing an alloy composition that meets the target mechanical properties based on the above; S5. Based on the prediction model and optimization algorithm, optimizing key process parameters and outputting the design results. This invention can significantly improve the comprehensive performance of rare-earth magnesium alloys.

This invention discloses a layered concrete structure with anti-penetration and filtering properties and its preparation method. It solves the problem in existing technologies where only the composition of the concrete layers is changed without improving the overall filtering performance. This invention has the beneficial effects of improving filtering performance and preventing further crack development. The specific solution is as follows: A layered concrete structure with anti-penetration and filtering properties includes a fiber-reinforced concrete layer and an intermediate composite material layer. The intermediate composite material layer is placed between two fiber-reinforced concrete layers. The fiber-reinforced concrete layer and the intermediate composite material layer are periodically arranged to form a layered concrete structure to enhance the filtering performance and improve the anti-penetration performance. The fiber-reinforced concrete layer contains steel fiber reinforcement to enhance the anti-penetration performance of the layered concrete structure. The wave transmittance in the intermediate composite material layer is different from that in the fiber-reinforced concrete layer, and the intermediate composite material layer is bonded to the fiber-reinforced concrete layer.

The application discloses an anisotropic conductive adhesive and a preparation method and electronic components, and relates to the technical field of packaging. The anisotropic conductive adhesive in the embodiment of the application comprises, in terms of mass fraction, 50-100 parts of epoxy resin, 0.5-30 parts of a curing agent and 10-40 parts of conductive particles with a core-shell structure, wherein the core layer of the conductive particles comprises liquid metal, and the shell layer of the conductive particles comprises a metal layer. In the application, the core-shell structure conductive particles are added to the anisotropic conductive adhesive, so that the conductive particles have good plasticity or deformability, which is beneficial to improving the reliable vertical electrical interconnection of the anisotropic conductive adhesive in the application under a low-pressure bonding scene, and is beneficial to avoiding the problem that the shell layer of the conductive particles in the conductive adhesive in the embodiment of the application is broken when the conductive adhesive is under pressure, the liquid metal in the conductive particles flows out, and the anisotropic conductive adhesive fails.

This utility model relates to the field of cable tray technology, and in particular to a novel trough-type cable tray, comprising a cable tray body, a support member fixed to the bottom of the outer side of the cable tray body, and a movable cable tray rotatably connected to the middle of the inner side of the cable tray body via a connecting screw. A flexible connection mechanism is installed between the movable cable tray and the cable tray body. A rotating groove for cooperating with the rotation of the movable cable tray is opened on one side of the cable tray body. The flexible connection mechanism includes a flexible rod, with rigid connecting rods sleeved at both ends of the flexible rod. A flexible plate is fixed below the flexible rod, and cable clamps arranged in an arc shape are fixedly installed on the inner side of the flexible plate. The cable clamps include a clamping body, and a cable limiting cavity is opened on the outer side of the clamping body. In this utility model, the angle of the movable cable tray can be flexibly adjusted to adapt to different installation environments, while significantly reducing the friction of cable movement, protecting the cables, facilitating operation, and improving wiring efficiency.

This invention discloses a combustion plate mounting structure and its preparation method. The mounting structure includes a flame cap and a combustion plate. The flame cap has a central through hole and an annular gas cavity. Bosses are respectively provided on the outer side of the inner annular wall and the inner side of the outer annular wall of the annular gas cavity. A limiting part facing the interior of the annular gas cavity is provided at the upper inner end of the inner annular wall and / or the upper outer outer end of the outer annular wall. The combustion plate is installed inside the annular gas cavity and is secured between the bosses and the limiting part. This combustion plate mounting structure is simple in structure and easy to manufacture. It can achieve upper and lower limiting of the combustion plate, making the installation of the combustion plate more stable and reliable. Furthermore, by first machining a step and then riveting the vertical edge of the step towards the interior of the annular gas cavity to form the limiting part, defects such as cracking after riveting the vertical edge of the step to form the limiting part can be avoided.

The present application relates to a kind of multifunctional self-adaptive press bonding device for electric field coupling laser brazing, it includes workbench, at least two elastic link mechanisms being set on the workbench, slippable installation in the swing end of the elastic link mechanism and be locked on the elastic link mechanism by fastener on the conductive rod, and soft copper pressure ring being installed on the conductive rod by rotating pair;Wherein, the workbench is provided with the insulating clamping site for installing workpiece, the at least two elastic link mechanisms are arranged at intervals around insulating clamping site, the soft copper pressure ring is provided with several flat parts being arranged relative to workpiece end face, and multiple round parts being arranged relative to workpiece flange and / or recess.The present application is suitable for the scene of small batch laser processing of various kinds in laboratory, with the advantages of meeting the comprehensive needs of electric field coupling laser brazing to conductive stability, topography adaptability, stress buffer for brittle material and operation convenience.

The application discloses a semi-solid thixotropic die casting forming method of a narrow solid-liquid two-phase zone alloy, and comprises the following steps: step one: the narrow solid-liquid two-phase zone alloy is added into a heating device and heated to a superheating temperature, and after complete melting, the alloy is cooled for a certain time to obtain an alloy blank with a cast structure; step two: the alloy blank is added into an extrusion device to complete cold extrusion, and an alloy blank containing high-density dislocations and lattice distortion structures is obtained; step three: the alloy blank is heated for the first time, the heating temperature is set between a recrystallization temperature and a solidus temperature of the alloy, and isothermal heat treatment is carried out to obtain fine and uniform recrystallized grains; step four: the alloy blank is heated for the second time, the temperature is set above the solidus temperature of the narrow solid-liquid two-phase zone alloy, and isothermal heat treatment is carried out to obtain a semi-solid blank; and step five: the semi-solid blank is subjected to die casting forming. The application has the advantages that excellent castings with physical properties are formed.

The present application belongs to the field of intelligent materials, and particularly discloses a temperature-controlled flexible piezoresistive sensing material with piezoresistive performance adaptive to temperature environment changes. The temperature-controlled flexible piezoresistive sensing material comprises a base resin and a conductive foam filler; wherein the weight percentage of the conductive foam filler in the base resin is 1% to 50%, the T g of the base resin is -30 to 35℃, preferably 0 to 33℃, and more preferably 15 to 30℃. The temperature-controlled flexible piezoresistive sensing material is based on its specific T g , and realizes adjustable pressure detection range. The RCR can stably respond to a large pressure of 500kPa to 1500kPa at an ambient temperature lower than T g . After the temperature is raised, the RCR can stably respond to a small pressure, and the pressure detection can be accurate to 10kPa, which is 50 times higher than under the foregoing conditions. The present application also discloses a preparation method and application of the temperature-controlled flexible piezoresistive sensing material. The temperature-controlled flexible piezoresistive sensing material can be used as a component of devices including intelligent, wearable, life monitoring or motion monitoring devices.

This utility model relates to the field of bedding. A waterbed heating blanket includes a flexible tube layer, a blanket surface layer, and a cotton filling layer. The cotton filling layer has two layers, with the flexible tube layer sandwiched between the two cotton filling layers. The blanket surface layer also has two layers, each located outside the two cotton filling layers. This utility model adds a cotton filling layer between the flexible tube layer and the blanket surface layer. This cotton filling layer not only reduces the discomfort caused by the flexible tube but also improves the heat retention effect.

This utility model discloses a frame strip and frame for photovoltaic modules, including a first sidewall, a second sidewall, a third sidewall, a fourth sidewall, a fifth sidewall, and a sixth sidewall connected by sequential bending. The first, second, and third sidewalls enclose a first mounting cavity, and the fourth, fifth, and sixth sidewalls enclose a second mounting cavity. The fourth sidewall fits against the third sidewall, and a teardrop-shaped support beam is formed on the fourth sidewall. A groove is formed between the teardrop-shaped support beam and the fifth sidewall. The teardrop-shaped support beam provides strong deformability and increases the support force on the first mounting cavity. The corner bracket installation and positioning are more convenient and precise, improving the stability of corner bracket assembly, increasing assembly efficiency, reducing the gap between the long and short frame strips, and preventing displacement under wind load vibration, thus ensuring the overall structural airtightness. The raised reinforcing ribs prevent stress concentration and also provide a certain limiting effect for corner bracket installation.

The application provides a photocurable bio-based flame-retardant resin and a preparation method thereof, and belongs to the technical field of bio-based polymer flame-retardant materials. Palm oil and phytic acid are used as raw materials to prepare palm oil-based methacrylate and phytic acid-based methacrylate monomers, respectively. The palm oil-based methacrylate and the phytic acid-based methacrylate are mixed with a photoinitiator through one-pot blending. The preparation method is simple and fast, the obtained bio-based resin is environment-friendly, and a three-dimensional structure material of the environment-friendly bio-based flame-retardant resin can be prepared through ultraviolet light curing by using ultraviolet light 3D printing technology. The bio-based flame-retardant resin has excellent mechanical strength, good deformability and high efficient flame retardancy, is also suitable for photocuring 3D printing, and can solve the technical bottlenecks of insufficient mechanical properties, low anti-deformation capacity and flammability of traditional vegetable oil-based resins.

The utility model discloses a complementary food nutrition bag product foreign matter detection device, including support column, the middle fixed link of two support columns has conveyer, the upper end of two support columns is commonly fixed with X -ray detector, and the end of two support columns is close to each other all fixedly links with the limiting plate, and the upper end of two support columns is commonly fixed with fixed block, and the lower extreme of fixed block is provided with the flattening mechanism, and the lateral wall of two support columns is provided with the extraction mechanism, and the lateral wall of a support column is provided with display screen, alarm and controller. Adopt flattening mechanism and spread nutrition bag, prevent nutrition bag stacking, influence the result of detection, through extraction mechanism, extract the nutrition bag of unqualified. The utility model has the advantages of avoiding the incomplete X -ray scanning range caused by the position deviation of nutrition bag, further guaranteeing the detection accuracy, without manual handling one by one, simplifying the processing flow, improving the processing efficiency of unqualified product.

The invention discloses a modified positive electrode material and a preparation method thereof, a composite positive electrode material and an all-solid-state battery, and belongs to the technical field of batteries. The modified positive electrode material comprises a positive electrode core, a first coating layer and a second coating layer, the surface of the inner core is coated with the first coating layer, and the surface of the first coating layer is coated with the second coating layer; the first coating layer is lithium niobium oxychloride halide, and the second coating layer is lithium zirconium oxychloride halide. The lithium niobium oxychloride halide electrolyte of the inner coating layer of the modified positive electrode material has relatively high ionic conductivity (greater than 10ms / cm), the rate capability of the positive electrode material can be improved, an electrochemical window exceeds 4V, and the modified positive electrode material can be adapted to a high-voltage high-nickel positive electrode material; the material lithium zirconium oxychloride halide of the outer coating layer also has an electrochemical stability window greater than 4V, and has relatively high room-temperature ionic conductivity (greater than 2ms / cm); the modified positive electrode material has relatively low internal resistance and relatively good electrochemical performance.

The invention discloses a manufacturing method of a 6061T6 aluminum alloy rotating shaft die forging, and particularly relates to the technical field of aluminum alloy rotating shaft die forging manufacturing, which comprises the following steps: firstly heating a blank to a first temperature for heat preservation, then heating to a second temperature for heat preservation, and simultaneously heating a die for heat preservation; upsetting, drawing, squaring, chamfering, rolling and pre-forming the homogenized blank, monitoring the temperature of the blank in real time in the process, and carrying out remelting heat preservation control; and the blank obtained after blank making is transferred into a preheating die, closed die forging is conducted at the sectional strain rate under the isothermal condition, and the final forging temperature is controlled. Through cooperation of multiple processes, grain refinement and structure homogenization are achieved, the strength, plasticity and fatigue life of the forged piece are remarkably improved, meanwhile, the material utilization rate and the process stability are greatly improved, and the method is suitable for batch manufacturing of high-performance aluminum alloy rotating shafts in the fields of aerospace, automobiles and the like.

This utility model discloses a running shoe with an elastic spherical sole, belonging to the field of footwear technology. The shoe includes an upper and a sole. The sole includes a midsole and an outsole. The outsole is disposed at the bottom of the midsole, and the upper is connected to the top of the midsole. The midsole includes a base and an elastic mechanism. The elastic mechanism is disposed at the heel of the base and includes a base and an elastic support. The base has a V-shaped opening at the heel, and the elastic support is disposed within the V-shaped opening. This utility model provides deformation space at the heel of the midsole by providing a V-shaped opening at the high point of the heel. By filling the V-shaped opening with an elastic support, the midsole can provide better elasticity at the high point of the heel, giving the sole excellent rebound and shock absorption performance.

The invention provides a crack selective plugging method based on temperature-magnetic field dual response shape memory particles, and relates to the technical field of oil and gas field development. Temperature-magnetic field dual-response shape memory particles with core-shell structures are dispersed in carrier liquid to be injected into a target oil layer, and a particle shell network is converted into a high-elastic state under the action of the in-situ temperature of an oil reservoir, so that adaptive entering and pre-filling of cracks with different sizes are realized; then, an alternating magnetic field is only applied to the target well section, the inner core network is activated and subjected to shape memory recovery through the magnetothermal effect generated by magnetic components in the inner core network, the particles are driven to be subjected to geometric dimension expansion in the crack space, and the plugging structure with the mechanical build-in characteristic is formed. And after the alternating magnetic field is removed, the shape memory recovery structure is fixed, deep, accurate and stable plugging of the crack channeling channel is achieved, and treatment of low-permeability, ultra-low-permeability and unconventional oil and gas reservoir crack channeling channels is achieved.