37results about How to "Reduced durability" patented technology

The invention relates to the technical field of fiber fabrics, in particular to a negative ion antibacterial polyester fiber fabric and a preparation method thereof. The problems that a polyester fiber fabric is low in mechanical strength and poor in lasting antibacterial performance are solved. Synthetic raw materials of the anion antibacterial polyester fiber fabric comprise composite anion powder, a composite antibacterial agent, an improved dispersing agent, a coupling agent mixture, terephthalic acid, ethylene glycol and a catalytic promoter. Negative ions of the fabric can be continuously released by controlling the proportion and the particle size of the components in the composite negative ion powder; the continuous antibacterial ability of the fabric is improved by changing the dosage of the composite negative ion powder and the composite antibacterial agent; the bursting strength of the fabric is improved by preparing the mixture of the improved dispersing agent and the coupling agent; the wear resistance of the fabric is improved by controlling the parameter conditions of synthesizing the ethylene glycol terephthalate and the time and temperature of polycondensation; the elongation at break of the fabric is improved by controlling parameter conditions in the spinning process.

This invention relates to machining tools and surface finishing methods using the DL (deep-drilling) method, the tools comprising ceramic-metal composites with uniformly polished surfaces. In some embodiments, the machining tool exhibits compressive stress less than -500 MPa after polishing, or equal to or greater than 40% of the compressive stress generated during the grinding process. In some embodiments of the invention, the machining tool has a uniformly polished surface along the cutting edge, i.e., perfect flatness between the metal and ceramic components of the tool, such that the roughness of the cutting edge is in the sub-micron range. In some cases, the machining tool has a roughness variation along the cutting edge and adjacent surfaces along the tool's uniform or regular cutting edge.

The utility model discloses an industrial waste residue composite cementing material preparation system which comprises a first calcining furnace, a kaolin feeding hole and a bauxite feeding hole are formed in the first calcining furnace, the first calcining furnace is connected with a first mixing kettle, and a coal ash feeding hole and a 10% sodium hydroxide solution feeding hole are formed in the first mixing kettle; the outlet end of the second calcining furnace is connected with the inlet end of the dehydrating tower, the outlet end of the dehydrating tower is connected with the inlet end of the second calcining furnace, the second calcining furnace is provided with a sodium dihydrogen phosphate feed port and a urea feed port, and the second calcining furnace is connected with the second mixing kettle; the second mixing kettle is provided with a red mud feeding hole, a coal gangue feeding hole, a metallurgical slag feeding hole and a glass water feeding hole; and the second mixing kettle is sequentially connected with the air furnace, the grinding kettle and the finished product bin. According to the utility model, the stockpiling of industrial solid wastes can be reduced, the environmental pollution can be effectively reduced, and the problem of infrastructure material shortage can be effectively relieved on the premise of ensuring the engineering quality.

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The invention discloses a preparation method of a pavement material based on an alkali-activated fly ash glass body, and relates to the technical field of road engineering materials and hazardous waste treatment. The method comprises the following steps: mixing fly ash with water, removing soluble ions, mixing with a nano material, carrying out melting treatment, and rapidly cooling in a magnetic field environment to obtain a fly ash glass body; performing heat treatment on the sintered red mud to obtain heat activated red mud; preparing a dry material comprising a gel material and aggregate, wherein the gel material is composed of a fly ash glass body and thermally activated red mud; mixing the alkali activator, the water reducer and the nanofiber, and uniformly stirring to obtain a homogeneous solution; and adding the homogeneous solution into the dry material, and uniformly mixing to obtain the pavement material slurry. According to the invention, deep dissolution and recombination of the fly ash vitreous body and the thermally activated red mud are promoted by using an alkali excitation technology, elements are promoted to be rearranged on a molecular level, an aluminosilicate network structure with high strength and durability is formed, heavy metals are effectively fixed, and reduction and recycling of the fly ash and the red mud are realized.

The application belongs to the technical field of excavator accessories, and provides a hidden lock buckle bucket tooth, which comprises a plurality of tooth seats, the tooth seats are detachably connected to a lip, and a locking assembly is arranged between the tooth seats and the lip; a tooth tip is detachably connected to one end of the tooth seat away from the lip, and a hidden lock buckle is arranged on the tooth seat, and the tooth tip is detachably connected with the tooth seat through the hidden lock buckle. The bucket tooth can be conveniently and quickly replaced.

The utility model relates to bridge engineering technical field, and disclose a kind of steel box girder and concrete pier column consolidation structure, including steel box girder, concrete pier column, shear nail and the adjusting member for adjusting the elevation of steel box girder installation, concrete pier column top is reserved with shear key, steel box girder bottom is equipped with for with concrete pier column top socket joint connection's notched, concrete pier column top outer circumferential wall is equipped with the slope of being inserted easily, concrete pier column top is inserted in the inside of notched, adjusting member includes jacking corbel and jack, jacking corbel is connected by bolt with the reserved planting bar on the outer wall below concrete pier column, jack is installed in jacking corbel top, jack top and steel box girder bottom are abutted. The present application is simple in structure, high in precision of factory prefabrication, force transmission is direct in socket design, stress concentration is small, and the elevation of section member is accurately adjusted, convenient for construction, applicable to complex environment and large-span bridge.

The utility model relates to the technical field of desulfurizing towers, and discloses a combined type glass fiber reinforced plastic columnar desulfurizing tower which comprises a desulfurizing module, a liquid box module is fixedly connected to the surface of one side of the desulfurizing module, and the desulfurizing module comprises a desulfurizing tower body. The surface of the side, away from the upper end of the center, of the inner wall of the desulfurizing tower body is fixedly connected with a gas-liquid separation cooler, and the surface of the side, close to the lower end of the center, of the inner wall of the desulfurizing tower body is fixedly connected with a filter screen plate; a second water pump is fixedly connected to the front side surface of the bottom end in the liquid box body, and the output end of the second water pump is fixedly connected with a second conveying pipeline. According to the utility model, under the mutual cooperation of the second water pump and the second conveying pipeline, a desulfurizing agent is conveyed to the ejector, so that the desulfurizing agent is combined with sulfides in waste gas, a desulfurizing effect is achieved, and then under the mutual cooperation of the demister and the gas-liquid separation cooler, flue gas is discharged.

The utility model discloses a novel protection layer structure of a prefabricated vertical component, which relates to the field of concrete structure construction, the cross section of the structure is a component main body of a rectangular cylinder, a main framework support is arranged in the component main body, a groove is arranged on the side surface for accommodating a transverse steel bar, a curved surface reed is arranged at the opening of the groove, and U-shaped hooks inclined inwards are arranged at the two ends of the component main body. Materials of the main framework are selected according to the thickness of a vertical component, and a component body is filled with fine aggregate concrete or high-strength mortar. The working mechanism is as follows: firstly prefabricating the tire membrane, installing the main framework and the hook during cast-in-place, and pouring the filler. The structure can effectively avoid many defects caused by the fact that the protective layer is too thick or too thin, and compared with the prior art, the structure has the remarkable beneficial effects of guaranteeing structural stability, preventing steel bar corrosion, improving construction quality and structural performance and the like.

The invention provides a relay device for a vehicle, which can restrain a movable member from shaking at a standby position of the movable member pressed by a return spring. A relay device (4) for a vehicle is provided with: a movable member (11) having a conductor (13); electrode relays (14, 15) which are brought into a conductive state by bringing the conductor (13) into contact with the electrode relays (14, 15) by the movement of the movable member (11); an elastic member (17) that presses the movable member (11) in a predetermined direction; and a housing (8) that accommodates the movable member (11), in which a recess (19) into which the movable member (11) is fitted when the movable member (11) is pressed by the elastic member (17) is formed in the housing (8), and the recess (19) is provided with an inclined surface (19a) that is inclined with respect to the movement direction of the movable member (11) and that is in contact with the movable member (11).

The invention provides a steel slag-based building material and a preparation method thereof. The steel slag-based building material comprises a steel slag matrix, and a micro-dot array layer, a nano rough layer and a fluoride-free low-surface-energy interface layer are sequentially formed on the surface of the steel slag matrix; the micro-dot array layer comprises bulge structures which are distributed on the surface of the steel slag matrix in an array manner. According to the steel slag-based building material provided by the invention, the convex structures distributed in the micro-dot array layer in an array manner are compounded with the nano rough units in the nano rough layer, so that double-scale rough is formed, the surface layer adopts a low-interface-energy interface, the interface free energy and adhesion work of the surface of the building material are reduced, the friction performance of the building material is guaranteed, and the service life of the building material is prolonged. And low adhesion, hydrophobicity and durability of the steel slag-based building material are realized.

There is provided a woven fabric that can suppress a thickness reduction due to abrasion even under high-load and high-speed sliding conditions, has an excellent tribological property when used as a sliding material, hardly causes play between members, and can be used by being bonded to the base material; and also provided a woven fabric and a sliding material in which at least one of warp yarns and weft yarns includes doubled and twisted yarns of fluororesin fibers and para-aramid fibers, and the roughness on at least one surface where the doubled and twisted yarns are exposed is 1150 µm or less.

This invention relates to the field of mechanical assembly tooling technology, specifically to an installation device for a double-layer filter screen of a crusher. The device includes a hollow shaft. Through the cooperation of variable-diameter positioning components at both ends of the hollow shaft and a guiding installation component, a stable coaxial reference can be established using the center hole of the crusher rotor. The connecting rod between the second and first connecting rods drives the contact block to expand radially synchronously, causing the arc-shaped friction block to conform to the hole wall and complete the tooling positioning. No modification to the crusher body structure is required. An auxiliary handle drives the threaded rod to rotate, and the guide diameter formed by the guide frame is adjusted via a pull rod transmission. The adjustment size can be intuitively controlled using a scale and indicator needle. The auxiliary rollers on the guide frame reduce the pushing resistance of the filter screen cylinder, minimizing scratch damage to the inner wall and effectively improving the alignment efficiency and installation accuracy of the inner filter screen cylinder. It can adapt to reference center holes of different diameters and cylindrical workpieces of different specifications, helping to improve the tediousness of manual alignment and enhance the consistency of installation quality.

The invention provides fluorine-containing copolymer powder, a preparation method of the fluorine-containing copolymer powder, a fluorine-containing copolymer powder-based super-hydrophobic and oleophobic coating and a preparation method of the fluorine-containing copolymer powder-based super-hydrophobic and oleophobic coating, and belongs to the technical field of super-hydrophobic materials. The preparation method of the fluorine-containing copolymer powder comprises the following steps: step S10, dissolving a fluorine-containing monomer and a non-fluorine monomer in DMF and / or DMAC according to a ratio of (2-30) wt%: (2-30) wt%, adding (0.5-3) wt% of AIBN, and carrying out a polymerization reaction at 50-90 DEG C for 1-12 h to obtain a fluorine-containing copolymer solution; step S20, pouring the fluorine-containing copolymer solution into water, precipitating and filtering to obtain a precipitate; step S30, repeatedly washing the precipitate with alcohol, and filtering; and step S40, carrying out vacuum drying on the washed precipitate, grinding into powder, and sieving with a 400-mesh sieve to obtain fluorine-containing copolymer powder which does not remain any hydrophilic substance influencing the durability of the coating.

The present invention addresses the problem of suppressing any lowering of durability in a carrier of a catalyst layer. This electroconductive titanium oxide has an electroconductivity of 0.1 S / cm or greater as measured under a pressure of 10 MPa.

The invention relates to the technical field of railway subgrade engineering, in particular to a high-speed railway subgrade filler parameter optimization method and system. The method comprises the following steps: acquiring to-be-detected high-speed railway data; carrying out roadbed surface multi-frequency electromagnetic wave scanning on the to-be-detected high-speed railway data to obtain original filler electromagnetic response signal data; response signal space-time registration is carried out on the original filler electromagnetic response signal data, roadbed filler physical feature extraction is carried out, and roadbed filler physical feature data are generated; performing abnormal region spatial feature statistics according to the roadbed filler physical feature data, setting a partition filler construction scheme, and generating intelligent partition filler construction scheme data; and according to the intelligent partition filling construction scheme data, subgrade filling parameter ratio adjustment is carried out, so that high-speed railway subgrade filling parameter optimization operation is achieved. According to the method, accurate optimization of filler parameters is realized through railway roadbed filler partition defect evaluation, and the roadbed construction efficiency and quality are remarkably improved.

The high-altitude unmanned aerial vehicle power supercharger lubricating device comprises a supercharger body, the supercharger body comprises a shell, the shell comprises an air compression wheel chamber and a turbine chamber which are integrally formed, and the air compression wheel chamber and the turbine chamber are connected with an air inlet pipe and a waste gas pipe correspondingly; by introducing an innovative lubricating mechanism and a waste gas heat energy utilization system, multiple technical breakthroughs are realized. Specifically, the annular oil chamber wrapping the transmission shaft is designed, the efficient circulating pump and the efficient lubricating oil tank are matched, and it is ensured that lubricating oil continuously flows and is updated in a circulating pipeline. More importantly, part of the waste gas is introduced into the sealing shell through the connecting pipe, and the circulating pipeline is heated by utilizing waste heat carried by the waste gas, so that the lubricating oil is effectively prevented from being solidified under high-altitude and low-temperature conditions, and the problem that the lubricating oil easily loses flowability in a high-altitude environment in the prior art is solved; and the operation efficiency and reliability of the supercharger are improved.

The application discloses an engine control method and related equipment, and relates to the technical field of new energy vehicles, and the method comprises the following steps: in the case that the duration that a target vehicle meets a preset starting condition reaches a first preset duration based on vehicle state data and driver demand data, starting the engine of the target vehicle; determining a target idle speed of the engine based on a temperature correlation parameter and a shutdown history parameter; after the engine runs at the target idle speed for a preset stable duration, determining a target operation mode according to driver operation data and a state of charge of a power battery of the target vehicle; controlling the engine to adjust from the target idle speed to a target dynamic speed; in the case that the duration that the target vehicle meets a preset shutdown condition reaches a second preset duration, shutting down the engine. The application can improve the engine start-stop stability, speed transition smoothness and operation mode matching, and reduce engine mechanical impact and energy loss.

A nonaqueous electrolyte secondary battery in which: a positive electrode active material includes first and second composite oxide particles each having a Ni proportion in metal elements other than Li of 50 at.% or more; the first and second composite oxide particles respectively have average particle diameters D1 and D2 satisfying 1 µm ≤ D1 ≤ 6 µm and 8 µm ≤ D2 ≤ 20 µm; a negative electrode active material includes a graphite material, and a Si-containing material; the graphite material includes first and second graphite particles having first and second internal void percentages P1 and P2, respectively, satisfying P1 < P2; when the negative electrode mixture layer is divided into first and second regions having the same thickness, and the first region is closer to the positive electrode than the second region, the first graphite particles are contained more in the first region than in the second region; and average values Pf (14% or less) and Ps of internal void percentages of the graphite material contained respectively in the first and second regions satisfy Pf < Ps.

An X-ray image acquisition device includes a pixel unit having M pixel arrays each including N pixel portions (N and M are integers of 2 or more), M circuit units, and a control unit. Each circuit unit includes T (T is an integer of N or more) adding sections that sequentially add electrical signals corresponding to output signals from the N pixel portions and a switch section for switching connection states between the N pixel portions and the T adding sections. The control unit switches the connection states in synchronization with the transportation of an object along a first direction so that the electrical signals corresponding to the output signals output from the pixel portions by detecting X-rays transmitted through the same region of the object are added by the same adding sections.

This disclosure relates to a control device for all-wheel-drive vehicles. While ensuring power performance in a differential limiting state of the power distribution device, it suppresses a decrease in the durability of the power transmission path on the front wheels. When the power distribution device is set to a differential limiting state and wheel braking torque is applied to both the front and rear wheels, torque limiting control is performed, setting the upper limit of the power source torque to a smaller value when the wheel braking torque is high compared to when the wheel braking torque is low. Therefore, for example, when a large accelerator and a large brake operation are performed in the differential limiting state of the power distribution device, it is easier to limit the torque of the power source, so it is less likely to transmit high torque to the power transmission path on the front wheels. Furthermore, for example, when the braking operation gradually decreases while the accelerator operation gradually increases in the differential limiting state of the power distribution device, the torque limitation of the power source is gradually released, so the torque of the power source increases when the rear wheels are less prone to slight slippage.

The invention discloses a non-Van der Waals artificial solid material as well as a preparation method, a thin film, a dispersion liquid and application of the non-Van der Waals artificial solid material. According to the preparation method, effective stabilization and structural transformation of a conventional MXene material are realized through a two-step method of first zinc vapor electron injection stabilization and then metal vapor bonding transformation, irreversible transformation of MXene to a rock salt structure at a high temperature can be prevented, the MXene can react with various active metal vapor, and the performance of the MXene material is improved. The invention provides a general way for controllably synthesizing a series of ultrathin non-Van der Waals artificial solid materials, solves the problem that the conventional MXene is unstable at high temperature, can be used for preparing a series of ultrathin layered materials including Al-Ti3C2 and large-area flexible films thereof, and the obtained material has high conductivity, mechanical flexibility and high-temperature oxidation resistance, and has a wide application prospect. The method has a wide application prospect in the fields of flexible electronics, high-temperature electromagnetic shielding and infrared stealth.

The invention discloses municipal sludge incineration ash comprehensive utilization equipment which comprises a rectangular shell, a mixing barrel, a conical grinding sleeve, a conical grinding head, a lifting mechanism, a water injection mechanism, an extrusion mechanism and a discharging mechanism. The water injection mechanism uniformly adds water to the bottom of the mixing barrel through a U-shaped pipe and a sprinkler head, the stirring effect of a stirring rod is matched, it is ensured that the ash is fully mixed with water and other additives, and the comprehensive utilization effect of the sludge incineration ash is improved; according to the method, automatic extrusion forming of the sludge incineration ash is achieved, the production efficiency and the yield are improved, the resource utilization rate of the sludge incineration ash is increased, the production cost is reduced, environmental pollution is reduced, and the method has important significance in promoting green buildings and sustainable development.

A membrane electrode assembly includes: a polymer electrolyte membrane; a pair of electrode catalyst layers in contact with the surfaces of the polymer electrolyte membrane with the polymer electrolyte membrane therebetween; and a gas diffusion layer laminated on each of the pair of electrode catalyst layers. Each electrode catalyst layer includes catalytic substances, carbon particles, polymer electrolyte aggregates, and fibrous substances, and the gas diffusion layer has a Gurley value, which represents the air permeability in the thickness direction, of 1.0 second or more and 3.0 seconds or less.

The invention relates to the technical field of metal composite plates, in particular to a ship metal composite plate structure and an operation method.The ship metal composite plate structure comprises a first metal plate, the inner wall of one side of the first metal plate is fixedly connected with side plates, the outer walls of the upper side and the lower side of the first metal plate are fixedly connected with top plates, and the opposite sides of the two side plates are fixedly connected with a second metal plate; the opposite sides of the two top plates are fixedly connected with the upper side and the lower side of a second metal plate. The first metal plate and the second metal plate form a tight whole through mechanical locking of the inserting rod and the cavity, when external force is borne, stress can be evenly distributed in the connecting area between the inserting rod and the metal plates instead of being concentrated on an adhesive layer interface, the bearing capacity of the structure is remarkably improved through the overall stress mode, and the service life of the structure is prolonged. The situation that the overall mechanical property and durability of the material are reduced due to the fact that the adhesive layer is prone to being influenced by factors such as environment temperature and humidity and aging and layering or debonding is generated at an interface is avoided.

An X-ray image acquisition device includes a pixel unit having M pixel arrays each including N pixel portions (N and M are integers of 2 or more), M circuit units, and a control unit. Each circuit unit includes T (T is an integer of N or more) adding sections that sequentially add electrical signals corresponding to output signals from the N pixel portions and a switch section for switching connection states between the N pixel portions and the T adding sections. The control unit switches the connection states in synchronization with the transportation of an object along a first direction so that the electrical signals corresponding to the output signals output from the pixel portions by detecting X-rays transmitted through the same region of the object are added by the same adding sections.

The present application discloses a stepped pinion capable of making the engagement of tooth surfaces appropriate regardless of the direction of the transmitted torque and simple in structure. In the stepped pinion, a large-diameter gear portion and a small-diameter gear portion are arranged at a prescribed interval in the axial direction of a rotation shaft. The large-diameter gear portion has a disc portion and a rim portion extending from the outside in the radial direction of the rotation shaft. A reinforcing member is arranged in the rim portion to support the portion extending from the disc portion toward one side in the axial direction. The reinforcing member is fixed in a state of extending to the outside in the radial direction of the rotation shaft. The inner peripheral surface of the rim portion is brought into abutment with the front end portion to limit the first inclination of the rim portion and allow the second inclination of the rim portion in the direction opposite to the first inclination in which the inner peripheral surface of the rim portion is separated from the front end portion.

This invention provides a front structure of a vehicle that offers good operability when installing and removing high-voltage wiring harnesses relative to high-voltage components located in the front region of the vehicle, and effectively protects the live parts and wiring harness connections when impact loads are applied from the front of the vehicle. In this invention, an electric compressor fixed to the front of the vehicle's engine E has a live part inside. A wiring harness connection for connecting a high-voltage wiring harness is provided in the outer peripheral region on the left side of the electric compressor in the vehicle width direction. The protective member includes: a first cover that covers the area corresponding to the live part from the front of the vehicle; and a second cover that is continuous with the first cover and located at a certain interval from the wiring harness connection to the front of the vehicle, covering the wiring harness connection from the front of the vehicle. A low-rigidity section with lower rigidity than the first and second covers is provided at the continuous portion between the first and second covers.

The present application relates to a garment processing device comprising: a drum comprising a drum body for providing a garment storage space, a front cover forming the front surface of the drum body, a rear cover forming the rear surface of the drum body, and a drum introduction opening provided through the front cover; a fixed panel positioned to be spaced apart from the rear cover and provided with a guide hole; a mounting body inserted into the guide hole to be able to reciprocate in a direction perpendicular to the fixed panel, the mounting body being divided into a first area facing in a direction in which the rear cover is positioned with reference to the fixed panel and a second area positioned opposite to the first area; a head provided in the first area to prevent the mounting body from being separated from the fixed panel; a power transfer portion comprising a housing fixed in the second area, an input shaft having one end positioned outside the housing and having the other side positioned inside the housing, an output shaft having one end fixed to the rear cover through the fixed panel and having the other end positioned inside the housing, and a gear unit positioned inside the housing so as to transfer rotational movements from the input shaft to the output shaft; a stator fixed in the second area or the housing so as to form a rotating field; a rotor, to which one end of the input shaft is fixed, and which is rotated by the rotating field; and a first displacement limiter provided in the second area to be positioned between the fixed panel and the housing, thereby limiting the displacement of the housing toward the fixed panel.

An embodiment of the present disclosure relates to a spectacle lens including an antifouling layer which is a condensate of an antifouling agent composition containing: 10 to 70 mass% of a compound (A) having a silyl group and a fluorinated alkyl group; and 30 to 90 mass% of a compound (B) having a silyl group at one end, a reactive group at the other end, and a polysiloxane chain structure.