17results about How to "Maintain strength" patented technology

This invention relates to the field of zinc alloy surface modification technology, and particularly to a corrosion-resistant medical zinc alloy, its preparation method, and its applications. The preparation method includes the following steps: weighing raw materials according to the chemical composition of the zinc alloy; cleaning the surface of the raw materials; smelting, refining, and casting to obtain an ingot; subjecting the ingot to equal-channel angular extrusion deformation to obtain an extruded zinc alloy; performing high-energy ion implantation on the zinc alloy to obtain a nitrogen-ion-implanted zinc alloy; and preparing a coating on the surface of the nitrogen-ion-implanted zinc alloy to obtain the final product. This invention achieves a high-adhesion, dense, and uniform deposition effect on the alloy surface through the synergistic control of "equal-channel angular extrusion + high-energy nitrogen ion implantation + biomimetic coating deposition," solving the problem of severe galvanic corrosion at localized sites in existing zinc alloys under corrosive environments. Simultaneously, the dense deposition layer helps inhibit rapid dissolution of the zinc alloy surface, significantly reducing the corrosion rate of the zinc alloy in corrosive environments.

This utility model relates to the field of wind turbine technology, and the technical problem it aims to solve is the insufficient fatigue strength. To address this problem, this utility model provides a blade main beam and a wind turbine blade. The utility model includes: an upper blade main beam comprising multiple spliced ​​upper sub-beams; the upper sub-beam includes a C-shaped connecting body and two connecting lugs; the connecting lugs are formed by bending outwards from the end of the connecting body; a lower blade main beam comprising multiple spliced ​​lower sub-beams; the upper and lower blade main beams are joined vertically, and their connecting lugs are fixedly connected; a strength-equalizing connection assembly comprising a C-shaped strength-equalizing connection part and a connecting plate; the connecting plate is connected to the opening of the strength-equalizing connection part; at the splicing position, the strength-equalizing connection assembly is inserted into the interior of the connecting body, and the top wall of the strength-equalizing connection part is fixedly connected to the top wall of the connecting body. The fatigue strength of the blade of this utility model meets the requirements.

The utility model discloses a clutch pressure plate with a good heat dissipation effect, and relates to the technical field of clutch pressure plates, the clutch pressure plate comprises a pressure plate body, the center of the pressure plate body is provided with a center hole, and the pressure plate body comprises an inner plate surface and an outer plate surface; a plurality of rivet holes are formed in the edge of the top of the pressing disc in a circular array mode. A thickening sleeve is arranged on the outer disc surface; a plurality of short protruding edges are arranged on the top of the thickening sleeve in a circular array mode, a plurality of arc-shaped heat dissipation through grooves are formed in the top of the thickening sleeve and the pressure plate body in a circular array mode, and all the short protruding edges are located between every two adjacent arc-shaped heat dissipation through grooves respectively. A long rib is arranged on one side, far away from the short rib, of the arc-shaped heat dissipation through groove; the problem that the clutch pedal makes contact with the clutch plate to slip when the clutch pedal is loosened is solved, the heat dissipation effect is achieved, deformation or cracking caused by temperature changes in the using process is avoided, and the service life of the pressure plate body is prolonged.

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 utility model discloses a grease leakage prevention bearing which comprises an inner ring, an outer ring, a plurality of rolling bodies and a retainer, the rolling bodies and the retainer are arranged between the inner ring and the outer ring, the rolling bodies are installed in a plurality of bags of the retainer in a one-to-one correspondence mode, and the pitch diameter of the bags of the retainer is smaller than that of the bearing. According to the utility model, the sinkage of the retainer is adjusted by adjusting the size difference between the pitch diameter of the pocket of the retainer and the pitch diameter of the bearing, so that the rolling body is firstly contacted with the outer diameter of the retainer, the contact scraping between the inner ring of the retainer and the rolling body is avoided, and the lubricating grease scraped by the mutual operation of the retainer and the rolling body is reduced; a gap between the outer diameter of the inner ring of the bearing and the inner ring of the retainer is adjusted, so that a grease accumulation space at the gap is enlarged, and the accumulation and extrusion height of grease on a rolling body scraped by the retainer is reduced; the cross section area of the retainer is not changed, the strength and the operation stability of the retainer are maintained, and the service life of the retainer and the bearing is prolonged.

This invention discloses a self-expanding, temperature-resistant elastomer plugging agent for drilling fluids and its preparation method. The plugging agent is composed of the following components in parts by weight: 100 parts of temperature-resistant polyolefin elastomer matrix material, 5-20 parts of polymer composite modified water-absorbing reinforcing agent, 5-15 parts of carboxylated carbon nanotube-PEG water-absorbing reinforcing agent, 5-30 parts of reinforcing material, 10-30 parts of superabsorbent resin, and 0.5-1.5 parts of anti-hydrolysis agent. The plugging agent of this invention possesses excellent elasticity and a certain degree of toughness, allowing it to be squeezed into fractures under pressure. After absorbing water, its volume expands, yet it still maintains a certain degree of elasticity and strength. Under its own elasticity, it increases friction with the fracture surface, increasing the elasticity of the entire sealing layer, preventing the plugging material from flowing back or sliding deeper into the fracture, sealing the leakage channels, and achieving effective sealing of wellbore fractures.

The purpose of this invention is to disclose a process for preparing highly absorbent brain cotton pads, relating to the field of brain cotton preparation technology, including the following steps: preparing a hydrophilic spunlace nonwoven fabric layer; mixing sodium polyacrylate superabsorbent resin powder and fluffy cotton fibers in a mass ratio of (3~5):1, and molding them by molding or air-flow web forming process to form a superabsorbent preform layer; laying the mesh layer on the surface of the superabsorbent preform layer; hot-pressing the mesh layer and the superabsorbent preform layer together by a first hot-pressing process to form a superabsorbent composite layer; laying annular development lines around the edge of the superabsorbent composite layer to form a superabsorbent intermediate layer; bonding the superabsorbent intermediate layer and the hydrophilic spunlace nonwoven fabric layers on its two surfaces together by a second hot-pressing process to obtain a brain cotton pad substrate; hot-pressing the edge of the brain cotton pad substrate by a third hot-pressing process to form annular hot-pressing zones. The beneficial effect is that the brain cotton pad can absorb no less than 4.5 times its own weight in blood or body fluids.

The application discloses a kind of childbirth process energy consumption monitoring and individualized energy demand management system, including multimodal perception layer, transmission layer, computing layer and application decision layer, multimodal perception layer includes multimodal data acquisition module and non-invasive metabolism monitoring module, and the physiological sign parameter of pregnant woman is collected using wearable sensor array in multimodal data acquisition module, and non-invasive metabolism monitoring module carries out collection to tissue oxygenation data, body fluid distribution and metabolism data and oxygen consumption and carbon dioxide production data, computing layer establishes individual basal metabolic rate model by intelligent computing module, and calculates total energy consumption of labor, and then balanced state is calculated by dynamic energy demand prediction model, and application decision layer generates individualized nutrition supplement scheme according to the data of computing layer, triggers multi-level early warning and pushes clinical decision suggestion, and the application realizes real-time accurate monitoring of childbirth process energy consumption, individualized energy demand prediction and dynamic nutrition supplement.

The utility model discloses a baby stroller. The baby stroller comprises a rotating joint; the device comprises a push handle, a first supporting leg frame, a second supporting leg frame, a connecting rod group and a mounting structure, and when one of the push handle, the first supporting leg frame and the second supporting leg frame rotates relative to the push handle, at least the other one of the push handle, the first supporting leg frame and the second supporting leg frame can be driven to rotate through the connecting rod group; the installation structure is arranged outside at least two of the push handle, the first supporting leg frame and the second supporting leg frame, and the connecting rod set is installed outside at least two of the push handle, the first supporting leg frame and the second supporting leg frame through the installation structure. And the connecting rod group is mounted outside, so that the internal structure of the frame pipe cannot be damaged, and the integrity and the original strength of parts can be kept. By means of the design, when the stroller frame bears the weight of a baby and various external force, the supporting effect of the stroller frame can be better achieved, the overall bearing capacity and stability of the stroller are improved, and the service life of the stroller is prolonged.

The utility model relates to the technical field of chemical reaction kettles, in particular to a polymerization reaction kettle, which comprises a kettle body, a cavity is arranged on the inner side of the kettle body, a connecting pipe is arranged at the top of the kettle body, the connecting pipe is communicated with the cavity, an observation window is arranged on the connecting pipe, and a valve is arranged between the connecting pipe and the observation window. The problems that when the sight line of the visual window on the reaction kettle is blocked, the visual window is difficult to clean in time, and an operator is difficult to observe the material condition and the equipment operation condition in the reaction kettle through the visual window can be solved.

The application provides a steel structure bridge assembly platform structure and a use method thereof. The steel structure bridge assembly platform structure comprises a horizontal rust-proof steel fixing plate, the upper surface of the horizontal rust-proof steel fixing plate is fixedly connected with an annular protective sleeve, the lower surface of the horizontal rust-proof steel fixing plate is fixedly connected with a horizontal carbon steel clamping type fixing rod, the lower surface of the horizontal carbon steel clamping type fixing rod is fixedly connected with a second I-shaped steel, and the lower surface of the second I-shaped steel is provided with a first I-shaped steel. By using multiple hydraulic devices, the height and position of the platform can be flexibly adjusted to adapt to different bridges and construction requirements. The flexibility enables the platform to be effectively used in various engineering environments. The horizontal carbon steel clamping type fixing rod, the first and second I-shaped steels in the structure. The design of these elements ensures the safety and stability of the platform during construction. The cavity and gap in the annular protective sleeve help to reduce the weight of the overall structure, making the platform more convenient to move and install, while maintaining the required strength and stability.

This invention provides a high-performance copper-phosphorus alloy based on grain optimization and its preparation method. The copper-phosphorus alloy comprises the following components in the indicated mass percentages: Cu 75%-85%, P 10%-15%, Al 2%-5%, Ti 1%-3%, rare earth elements 0.1%-0.5%, and the remainder being Fe; the rare earth elements are one or more combinations of cerium, lanthanum, and dysprosium. The preparation method includes batching, smelting, preliminary cooling, casting and rolling, rapid cooling, heat treatment, machining, and surface treatment. The copper-phosphorus alloy of this invention achieves high performance through grain optimization and is suitable for industrial applications requiring high strength, high hardness, and good plasticity and toughness.

The multifunctional fire rescue waist axe comprises an axe handle and an axe head, the axe handle comprises a first holding portion and a second holding portion, the upper portion of the first holding portion is hinged to the upper portion of the second holding portion, the axe head comprises a claw cone and an axe head body, and the claw cone is connected with the upper end of the first holding portion. The axe main body is connected with the upper end of the second holding part, and locking pliers are formed between the first holding part and the second holding part; the auxiliary tool is installed at the lower end of the axe handle through a detachable structure, the auxiliary tool and the waist axe can be used independently, rescue efficiency can be improved, in addition, when the auxiliary tool is damaged or needs to be replaced with other tools, the auxiliary tool can be directly replaced, the whole waist axe does not need to be disassembled and reformed, tool preparation time is greatly shortened, and work efficiency is improved. And the rescue working efficiency is further guaranteed. The multifunctional tool also has multiple functions of an axe, a wrench, a screwdriver, a claw cone, a lock wrench and the like, and is suitable for different requirements of rescue sites.

The utility model relates to the technical field of wood crushing, and discloses papermaking wood processing equipment which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a discharging frame, the left side of the top end of the bottom plate is fixedly connected with a motor, the driving end of the motor is fixedly connected with a transmission shaft, and the outer portion of the transmission shaft is fixedly connected with a main shaft wheel. The top end of the discharging frame is fixedly connected with a roller frame, the middle of the roller frame is rotationally connected with a driving crushing roller, the end, close to the motor, of the driving crushing roller is fixedly connected with a driven shaft wheel, the end, away from the motor, of the driving crushing roller is fixedly connected with a first face gear, and the middle of the roller frame is rotationally connected with a driven crushing roller. According to the utility model, the crushing rollers are improved to be in differential relative rotation so as to reduce fiber breakage and maintain the length and strength of fibers, and sawdust and wood ash are moved and screened by virtue of inertia swing of the transmission plate, so that blanking blockage is prevented, and the papermaking quality is improved.

The invention relates to the technical field of reinforcing and toughening of high polymer materials, and particularly discloses a high polymer grafted surface thorn-type mesoporous silica nano composite particle as well as a preparation method and application of the high polymer grafted surface thorn-type mesoporous silica nano composite particle. The nano composite particle is specifically characterized in that an inner core is a silicon dioxide nano particle with a center diverging mesoporous structure and a spiny surface; the outer layer is a polymer grafted on the surface of the inorganic core; mesoporous silicon dioxide nanoparticles with spikes on the surface, an amino silane coupling agent, a polymerization initiator and a polymerization monomer are used as raw materials, and the particle size of inorganic core particles and the grafting length of outer-layer macromolecules can be regulated and controlled in the synthesis process. The nano composite particles with the structure are used as polymer filler, the light transmission performance is similar to that of pure macromolecules, and the mechanical property is superior to that of pure inorganic nano particles; compared with traditional nanoparticles grafted with macromolecules, the light transmittance, rigidity and obdurability are comprehensively improved. The nano composite particle can keep excellent light transmission while effectively strengthening and toughening a high-light-transmission polymer matrix.

This utility model discloses a lightweight fiberglass cooling tower support beam with a honeycomb sandwich structure, including a hollow main beam plate. A honeycomb core layer is filled and fixed within the cavity of the hollow main beam plate. The honeycomb core layer is fixedly adhered to the inner top and bottom surfaces of the hollow main beam plate cavity using epoxy structural adhesive. Connecting discs are fixed at both ends of the hollow main beam plate, with the centers of both ends coinciding with the centers of the connecting discs. Several bolt holes are provided on the connecting discs. In this embodiment, a hollow main beam plate with a honeycomb core layer is used as the main body of the cooling tower support beam. The main beam plate and the honeycomb core layer together form a sandwich-like structure. The hollow main beam plate is made of fiberglass, maximizing the advantages of fiberglass's corrosion resistance, lightweight, and high strength. The honeycomb core layer within the cavity of the hollow main beam plate maintains its lightweight advantage while maximizing its bending stiffness, significantly enhancing its bending resistance.

The invention belongs to the technical field of agricultural biology, and particularly relates to a method for improving verticillium wilt resistance of cotton, which comprises the following steps of: constructing a systematic process of disease-resistant single plant screening in a disease place, complex adding generation in south Hainan, disease nursery multi-generation directional breeding and strain double-path identification; physiological index verification and molecular assisted selection are combined, the breeding period is remarkably shortened to 3-5 years, and the cotton line with stable disease resistance and excellent agronomic characters is efficiently obtained.