20results about How to "Increase mechanical bite force" patented technology

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

A kind of UHPFRC combined steel bridge deck panel using burl cold connection key, comprising the following construction steps: S1, prefabricated cold connection key;S2, using high-pressure air gun to carry out dust removal, cleaning to steel bridge deck top plate;S3, set cold connection key on steel bridge deck top plate, the longitudinal distance between adjacent cold connection key is 30-50cm, the transverse distance is 30-50cm;S4, pours the layer of ultra-high performance cement-based composite material on steel bridge deck top plate and cold connection key;The combined steel bridge deck panel of the application is simple in structure, and the force is clear, burl cold connection key is used in steel-mix combined structure, increases the contact area of connection key and concrete, can significantly reduce the stress concentration between connection key and concrete, while connection key has 360 degrees universal shear resistance, and shear resistance adaptability is good, and has good tensile performance, reliable connection and other advantages, is used with copolymerized formaldehyde fiber or hybrid fiber UHPFRC, can significantly improve the combined stiffness of combined structure, improves the fatigue performance of steel bridge deck panel.

This application discloses a method for printing copper-based liquid cooling components via grafting, and the copper-based liquid cooling component itself. The method includes: providing a base plate; machining positioning grooves on the base plate according to its external dimensions; etching the inner walls of the positioning grooves; sandblasting the upper surface of the base plate; embedding the sandblasted base plate into the positioning grooves; selectively laser melting the base plate; sequentially printing the bonding surface layer and the heat dissipation fin body layer using different printing strategies to obtain a blank; removing the blank from the positioning grooves and polishing it to obtain the copper-based liquid cooling component. This method solves the technical problems of base plate warping, low internal density, loose structure, and poor bonding surface strength in traditional laser additive manufacturing of copper-based liquid cooling components, achieving stable manufacturing of high-precision, high-performance copper-based liquid cooling components.

The invention discloses a steel spring floating slab track structure which comprises a base, a plurality of floating slab units are arranged at the top of the base and connected end to end, and each floating slab unit comprises floating slab end plates located at the two ends and a floating slab middle plate located between the two floating slab end plates. A wet joint is arranged between the floating slab end plate and the floating slab middle plate, and the end faces, facing the wet joint, of the floating slab end plate and the floating slab middle plate are designed to be concave and rough. The multiple floating slab end plates and the multiple floating slab middle plates are longitudinally connected through the wet joints to form the floating slab units, the adjacent floating slab units are connected through the second connecting pieces and the square shared vibration isolators, the smoothness and coordination of the adjacent slab bodies are effectively guaranteed, the driving safety and stability are greatly improved, and the service life of the floating slab units is prolonged. And the service life of rail structure components such as the plate end fastener, the second connecting piece and the like is ensured.

The utility model discloses a prefabricated assembled bridge pier grouting joint structure which comprises a bearing platform and a prefabricated pier column section, reserved through holes which are longitudinally communicated are formed in the bearing platform and the prefabricated pier column section, reinforcement cages are arranged in the reserved through holes, a prefabricated groove hole matched with the prefabricated pier column section is formed in the top end of the bearing platform, and the prefabricated groove hole is communicated with the prefabricated pier column section. Positioning connection structures which are embedded with each other are prefabricated at the joints of every two adjacent prefabricated pier column sections; the positioning conical grooves in the two ends of the prefabricated pier column section and the conical surface of the pressing connecting conical head are designed in a self-locking mode, the pressing connecting conical head is arranged to be a rectangular pyramid, instant guiding and positioning of hoisting of the prefabricated pier column section are achieved, the time consumed for adjusting the reserved through hole is shortened, the pressing connecting conical head is pressed to generate radial separation, and the positioning accuracy of the prefabricated pier column section is improved. The shear bearing capacity of the joint is improved; the connecting spiral convex ribs are arranged on the inner wall of the reserved through hole to form a continuous thread-shaped interface, so that the mechanical meshing force between the grouting material and the hole wall is improved, and the interface is prevented from sliding.

The invention relates to the technical field of iron tower construction, and discloses an anti-loose composite nut structure for an iron tower and a construction method.The anti-loose composite nut structure for the iron tower comprises connecting plates arranged on an iron tower connecting part and used for connection, a bolt penetrates through the position between every two adjacent connecting plates, and a screw of each bolt is sleeved with a first flat washer and a second flat washer; the first flat washer and the second flat washer are distributed on the sides, away from each other, of the two connecting plates and located between the head of the bolt and the adjacent connecting plate. Through the inclined washer between the lower nut and the upper nut, the friction coefficient between the upper nut and the lower nut is reduced and stabilized, a thread difference is formed between the upper nut and the lower nut, synchronous rotation of the upper nut and the lower nut is prevented, and the site construction management difficulty is reduced; a plurality of contact surfaces are formed between a nut thread and a bolt thread, so that the anti-loosening performance of the nut is improved; a plurality of reverse contact surfaces of threads of the upper nut and the lower nut abut against each other, so that the anti-loosening performance is further enhanced; a reliable double-nut self-locking anti-loosening structure is formed only through the inclined gasket, special assemblies and machining processes are avoided, and the anti-loosening cost is low.

The invention relates to the technical field of high-pressure grouting, and discloses a bottom plate high-pressure jet grouting device which comprises a grouting pipe and a self-rotating spray head and further comprises a connecting mechanism and a variable-diameter cutting mechanism, the variable-diameter cutting mechanism comprises an inner sleeve rotating synchronously with the self-rotating spray head, and the inner sleeve is sleeved with an outer sleeve; a plurality of equidistant cutting main cutters are hinged to the outer part of the outer sleeve, and the plurality of cutting main cutters can realize radial external expansion and internal shrinkage along with the reciprocating sliding of the outer sleeve. By means of the actions that the grouting pipe and the self-rotating spray head rotate in the same direction at the differential speed and gradually retreat from a drill hole, the multiple cutting main cutters rotate for cutting, the cutting radius changes in a reciprocating mode, irregular hole walls are cut out, follow-up high-pressure grout and a rock stratum are promoted to be meshed in a staggered mode, and an irregular consolidation body is formed; through staggered adhesion between the edge of the irregular consolidation body and the rock stratum, the mechanical occlusal force of the consolidation body and the rock stratum can be greatly enhanced, so that the stress change of the floor rock stratum is effectively resisted.

This invention provides a high-strength, anti-segregation self-compacting concrete, its preparation method, and its application, belonging to the field of tunnel and underground engineering technology. This invention utilizes steel fibers to prevent aggregate settlement, while polymer fibers tend to distribute in the upper slurry. Simultaneously, the surface structure of both steel and polymer fibers increases the mechanical interlocking force between the fibers and the slurry, effectively resisting the settling tendency of fibers and coarse aggregates. A cationic viscosity modifier imparts excellent thixotropic properties to the concrete, effectively locking in aggregates and moisture, preventing segregation, and achieving high flowability and high stability. Water glass reduces the impact of hardening shrinkage on concrete performance, improving its crack resistance and durability. Water glass also enhances the compatibility of aggregates with other raw materials. The "discontinuous gradation" strategy reduces the mechanical interlocking force of particles during mixing, causing a sharp drop in resistance during concrete flow, and then maintaining uniformity through frictional self-locking when stationary, thus improving its stability.

This utility model discloses a high-brightness Micro-LED lamp bead, comprising: a base, an LED chip substrate, a light-transmitting component, and a conductive component. The LED chip substrate is disposed within the inner cavity of the base; the light-transmitting component is disposed on the top of the base and serves to protect the LED chip substrate from light transmission; the conductive component serves to conduct electricity to the LED chip substrate and includes multiple pads disposed at the positive and negative ends of the LED chip substrate; multiple sets of pins are symmetrically disposed at the bottom of the base, and locking parts for connecting the pads are provided at the bottom of the pins; this utility model uses locking parts at the connection between the pins and the pads to fix the pins and pads. Compared with the direct planar contact solder bonding of the pins and pads, the locking parts of this design increase the welding surface area between the pins and the pads, allowing the solder to wet the interface between the pins and the pads, thereby improving the mechanical bonding force of the pins and reducing the possibility of the solder joint falling off due to vibration.

The utility model provides a structure for optimizing ohmic contact on the back surface of a GaN device through a sin insertion layer, which belongs to the technical field of GaN devices, and comprises a GaN substrate and a sin layer arranged on the back surface of the GaN substrate, the sin layer is provided with a concave-convex structure, and the concave-convex structure is provided with a concave-convex groove. The GaN substrate is provided with a concave-convex structure, the concave-convex structure is specifically protrusions formed on the surface of the sin layer, the GaN substrate is further provided with a metal contact layer, the metal contact layer makes contact with the concave-convex structure, the metal contact layer is provided with structures matched with the protrusions on the surface of the sin layer, and the sin layer and the metal contact layer are physically interlocked through the concave-convex structure. According to the utility model, the peeling phenomenon of the contact layer under the condition of high temperature or high pressure is solved, and the long-term reliability of the device is improved.

The utility model discloses surface treatment equipment for automobile seat processing, which comprises a surface paint spraying mechanism and a quick-drying mechanism, the quick-drying mechanism is fixedly connected to the front surface of the surface paint spraying mechanism, the quick-drying mechanism comprises a quick-drying box, and the bottom of the left side of the back surface of an inner cavity of the quick-drying box is fixedly connected with a motor assembly. The output end of the motor assembly is fixedly connected with a first gear, the back face of an inner cavity of the quick-drying box is movably connected with a second gear through a bearing, the bottom of the second gear is meshed with the first gear, the top of the left side of the front face of the second gear is fixedly connected with a rotating pin assembly, and the surface of the rotating pin assembly is sleeved with a vertical frame assembly. According to the surface treatment equipment, the phenomenon that a traditional workpiece cannot be quickly dried after paint spraying is changed, the quick drying fan is adopted for quickly drying the workpiece body, the workpiece does not need to be naturally dried, the drying efficiency cannot be affected, and the overall machining progress cannot be affected.

This application relates to the field of building materials, specifically disclosing a high-ductility basalt fiber concrete and its preparation method, comprising cementitious materials, fiber mixtures, water, and admixtures. The fiber mixture includes polyethylene fibers and modified basalt fibers. The modified basalt fibers are prepared by the following method: basalt fibers are soaked in a calcium solution, and carbonates are added dropwise under alkaline conditions for in-situ mineralization to generate nano-calcium carbonate whiskers. These whiskers are then deposited by electrophoresis in a first suspension and then in a second suspension to obtain modified basalt fibers. The preparation method includes the following steps: mixing the cementitious materials and the fiber mixture to obtain a preliminary mixture; mixing water and admixtures and adding the preliminary mixture; stirring to obtain high-ductility basalt fiber concrete. This application has the characteristics of improving the interfacial bonding strength between basalt fibers and the concrete matrix, resulting in a high-performance concrete material with better ductility and strength.

The invention relates to the technical field of preparation of foam glass, in particular to high-strength and low-heat-conductivity foam glass and a preparation method thereof. The problems that existing foam glass is low in strength and high in heat conductivity are solved. According to the foam glass, waste glass and glass fibers are used as raw materials, silicon carbide is used as a foaming agent, borax is used as a fluxing agent, trisodium phosphate dodecahydrate is used as a foam stabilizer, modified polyurethane and silicon dioxide aerogel are used for modifying the foam glass, the porous structure advantage of the aerogel enables heat to be transmitted along a slender framework of the aerogel, the heat transfer flux is low, and the foam glass has good heat transfer performance. The heat loss in the transmission path is large, and due to the existence of the aerogel particles, the solid-phase transmission path of heat in the foam glass is more complex, the CF3 group low surface energy reduces the heat convection path and inhibits the solid-phase heat conduction, so that the foam glass has a lower heat conductivity coefficient, and the mechanical strength of the material is improved. Therefore, the durability and thermal insulation performance of the foam glass are enhanced.

The utility model belongs to the technical field of wall angle beads, and provides a novel pre-embedded clamping piece type prefabricated wall angle bead device which comprises a glass fiber reinforced plastic angle bead strip, a glass fiber grid bonding belt, a pre-embedded clamping piece type plastic expansion pipe and a self-bottom-expanding groove type lock key bolt, the glass fiber reinforced plastic angle bead strip is attached to a wall corner, and the glass fiber grid bonding belt is attached to the bottom of the pre-embedded clamping piece type plastic expansion pipe and the self-bottom-expanding groove type lock key bolt. The glass fiber grid bonding belt is attached to the outer side face of the glass fiber reinforced plastic corner bead, the number of the embedded clamping piece type plastic expansion pipes is two, the two rows of the embedded clamping piece type plastic expansion pipes are embedded in the portions, on the two sides of a wall corner, of a wall body respectively, and the self-bottom-expanding groove type locking key bolts can be inserted into the embedded clamping piece type plastic expansion pipes. The device is high in bonding strength with the wall body, high in construction efficiency, convenient to install and long in service life, reduces the construction and later maintenance cost, and can improve the flatness of the corners of the wall body so as to achieve the purposes of protecting and decorating wall corners.

This utility model discloses a cable guide hole protective gasket with an embedded nut, comprising a gasket body composed of a first half-gasket and a second half-gasket. The first half-gasket has multiple fixing holes integrally formed on one side, each containing a nut. The second half-gasket has multiple mounting holes integrally formed at its top and bottom, corresponding one-to-one with the fixing holes and penetrating the second half-gasket. Bolts are inserted into these mounting holes, and the bolts are threadedly connected to the nuts. This utility model not only effectively prevents the cable from rubbing against the nut during operation, reducing the risk of cable wear and breakage and significantly improving safety, but also eliminates the need for additional positioning operations, significantly improving installation efficiency, facilitating on-site maintenance and replacement, reducing labor costs, and enhancing the mechanical interlocking force between the nut and the composite material, preventing rotation or detachment, and improving the stability of the nut installation.

The invention relates to the technical field of metal corrosion prevention, in particular to a sand blasting coating for a camera shell and a preparation process of the sand blasting coating. A preparation technology of a sand blasting coating for a camera shell comprises the following steps that a pretreated camera shell die casting is subjected to sand blasting treatment through an abrasive material, the camera shell die casting is soaked in phosphoric acid treatment liquid to be treated, a layer of organic coating is sprayed to the surface after the camera shell die casting is taken out, and a protective coating is formed; and finally, the sand blasting coating is formed through water vapor and curing treatment. According to the invention, sand blasting treatment and phosphoric acid treatment are combined, tiny pits and bulges formed by sand blasting increase the surface roughness and enhance the mechanical occlusal force, and an aluminum phosphate conversion film generated by phosphoric acid treatment fills surface micropores and cracks to form a large number of hydroxyl groups and other active sites which can react with functional groups in the organic coating, so that the organic coating has a good anti-corrosion effect. Covalent bonds or hydrogen bonds are formed, and the adhesive force between the organic coating and a base material is improved, so that the problems of surface defects and surface tension change are solved.

The invention provides a biologically active component modified veneer based on a molecular nest technology and a production process thereof, and the production process comprises the following steps: mixing eucalyptus wood shavings and an active modified adhesive, paving, pre-pressing, and hot-pressing and curing to obtain an active plain board; the preparation method comprises the following steps: pretreating decorative base paper by using a folium artemisiae argyi extract, impregnating by using an impregnating solution containing modified molecular nests, and drying to obtain active impregnated paper; and spraying an interface treating agent on the surface of the active plain board, drying with hot air, covering the active impregnated paper on the active plain board, and carrying out hot pressing, cooling and edge cutting to obtain the product. The invention provides a veneer modified by bioactive components based on a molecular nest technology. The mechanical property, antibacterial durability and fragrance retention time of the veneer are improved; the interface bonding force between the adhesive and the plant fibers is improved, the problem that active ingredients break out and release too early is solved, and the interface bonding strength between the plain board and the impregnated paper is enhanced.

The utility model relates to the technical field of building construction, and disclose a cast -in -place pipe gallery bottom plate anti -floating anchor rod's pre -buried fixed structure. This cast -in -place pipe gallery bottom plate anti -floating anchor rod's pre -buried fixed structure, including pre -buried pipe, the top fixed connection of pre -buried pipe has the cone head socket tube that adapts to anchor rod reinforcement, the top of cone head socket tube is established to have the contraction gap that is annular array distribution and extends downward, the outside of cone head socket tube is connected with the cone head nut that adapts to anchor rod reinforcement and adapts to its upper end with screw thread, the inside of pre -buried pipe is established to have the receiving hole that is vertical equidistance distribution and extends to its left and right side, the device has the advantages such as the mechanical bite force of reinforcing anchor rod and concrete, the installation operation of convenient and reliable locking mechanism, solveed the problem that the conventional anchor rod only relies on the cohesive force between steel bar and grouting body to resist the pullout force, and under the long -term groundwater buoyancy effect, prone to slippage phenomenon.

This invention relates to the field of concrete reinforcing fiber technology, and particularly to a bamboo powder-reinforced polypropylene composite fiber for concrete crack resistance and its preparation method. Through an integrated process of surface chemical modification (introducing bifunctional groups), melt grafting (forming chemical anchoring), and multi-stage stretching (forming a rough structure in situ), the strong interfacial bond between bamboo powder and polypropylene and the simultaneous construction of fiber surface functions are fundamentally achieved. This method not only solves the global problem of bamboo powder easily detaching from the polymer matrix, but also ensures good rheological properties of the melt due to the minimal damage to the polypropylene backbone caused by chemical grafting. This makes it possible to subsequently prepare fine denier fibers (with diameters as low as 30 μm) through high-ratio multi-stage stretching, overcoming the technical bottleneck of traditional modification methods that struggle to balance strong interfacial bonding and high spinnability.