37results about How to "Work around limited usage" patented technology

The invention discloses a preparing method of a metal magnetic powder core. The preparing method includes the following steps that (1) master alloy is melt through a vacuum induction furnace, and an alloy thin belt is obtained through a quick quenching device; (2) ball milling is conducted on the thin belt; (3) annealing is conducted on powder; (4) particle size distribution is conducted on the annealed powder; (5) passivant is added into the distributed powder to conduct passivating on the powder, and then a binding agent and an insulating agent are added into the powder to conduct insulating bonding and wrapping on the powder; (6) a lubricating release agent is then added, the mixture is mixed, and compression moulding is conducted; (7) annealing is conducted on a sample obtained through compression moulding, and the sample is cooled along with the furnace, and spraying and coating are conducted to obtain the target product. According to the preparing method, the master alloy contains an appropriate number of alloy elements, so that the alloy processing performance is improved; the alloy powder and an insulating medium are mixed and pressed to be the magnetic powder core, so that eddy-current loss under a high frequency can be greatly reduced; meanwhile, the problem that alloy materials are limited in use due to single shapes is solved through shape diversity of the magnetic powder core.

The invention provides a nonlinear aircraft flight path control method. A flight path instruction generator sends a flight path instruction signal to an outer ring flight path controller; the outer ring flight path controller receives the flight path instruction and the aircraft position, the velocity, the flight path inclination and the flight path azimuth signals measured by the sensor, and calculates and sends an engine throttle instruction signal to an aircraft platform and sends an attack angle instruction, a sideslip angle instruction and a rolling around velocity vector roll angle instruction signal to an inner ring attitude controller; the inner ring attitude controller receives the attack angle instruction, the sideslip angle instruction, the rolling around velocity vector roll angle instruction signal and the aircraft attack angle, the sideslip angle, the rolling around velocity vector roll angle and the angular velocity signals measured by the sensor, and a rudder surface deflection instruction is calculated and sent to the aircraft platform; through measurement, the sensor acquires the aircraft parameter signals and feeds the signals back to the outer ring flight path controller and the inner ring attitude controller; and the aircraft receives a rudder deflection instruction to complete a corresponding rudder deflection action and receives a throttle control instruction to realize a corresponding thrust.

The invention relates to an ionization-irradiation-resistant active optical fiber for space. The ionization-irradiation-resistant active optical fiber comprises an active fiber core, an inner cladding layer, an outer cladding layer and a coating layer; the materials of the active fiber core comprise active reactive ions and silicon dioxide of a co-doping agent, wherein the active reactive ions are one or more of halides or oxides of rare-earth elements of which the atomic number is from 57 to 71, and the co-doping agent is one or more of germanium compounds, phosphorus compounds, aluminum compounds and fluorine compounds; cerium compounds are doped in the material of the active fiber core and the dosage concentration of the cerium compounds is between 2,000 and 10,000ppm; and cerium or fluorine can be also doped in the material of the inner cladding layer, wherein the dosage concentration of cerium ions is between 0 and 8,000ppm, and the dosage concentration of fluorine ions is between 0 and 1,000ppm. In the invention, the ionization-irradiation-resistant characteristics of the active optical fiber can be greatly improved according to test verification because the cerium is doped in the fiber core of the ionization-irradiation-resistant active optical fiber, and the problem of application restriction of the current active optical fiber in an irradiation environment is solved.

The embodiment of the invention provides die-cast aluminum alloy. The die-cast aluminum alloy comprises the following components of, in percentage by mass, 0.1%-7% of magnesium, 7%-35% of zinc, 0.2%-0.8% of manganese, 0.1%-0.7% of iron, 0.07%-0.2% of titanium and / or zirconium, less than or equal to 0.3% of inevitable impurities and the balance aluminum. The die-cast aluminum alloy has the advantages of high strength, high toughness and excellent liquidity, and can be suitable for forming a complex thin-walled part product. The embodiment of the invention also provides a preparation method of the die-cast aluminum alloy and a communication product structural member prepared by the die-cast aluminum alloy.

The invention belongs to the technical field of remote sensing application, and particularly relates to a method for converting microwave remote sensing surface temperature to thermal infrared remote sensing land surface temperature. A physical method suitable for a bare-ground area is provided based on a soil heat conduction equation. The method comprises the steps of data preprocessing; GLDAS data calibration; equivalent temperature generation; conversion from microwave remote sensing surface temperature to thermal infrared remote sensing land surface temperature, wherein land surface temperature which has the same physical significance as thermal infrared remote sensing land surface temperature is generated through passive microwave remote sensing data. The method can be universally applied to existing passive microwave remote sensing inversion land surface temperature algorithms. By the adoption of the method, the precision of the algorithms in inversion of bare-ground area surface temperature is improved.

The invention relates to the field of turbine / punching or rocket / punching combination engines, and discloses an oil cooling turbine moving blade. The technical problem that using of an air turbine is limited under the high mach number flight condition needs to be solved. A system comprises a fuel tank, a fuel pump, a hollow shaft and an air turbine. A hollow tubular structure in the hollow shaft is a cooling channel. A rotor part of the air turbine is composed of a turbine disc and a blade body. A cooling channel is distributed in the turbine disc and the blade body. According to the oil cooling turbine moving blade, fuel carried by an aircraft serves as a cooling agent to cool the turbine blade, and the problem that under the high mach number flight condition, the air temperature is too high, and consequently using of the air turbine is limited is solved.

The invention discloses a dual-purpose tool for screwing studs through interference threads or an unthreaded hole. The dual-purpose tool is composed of a screw sleeve, a connecting pin, a screw rod and a handle, the handle is arranged at the upper end of the screw rod, the outer portion of the screw rod is movably connected with the screw sleeve through the connecting pin, a threaded hole is formed in the bottom end of the screw sleeve, and the connecting pin and the screw sleeve are in transition fit. The jerk value of the outer circle of the screw sleeve relative to the threaded hole is not larger than 0.5. The roughness value of the surface of the outer circle of the screw sleeve is not smaller than Ra3.2. When the tool is used for screwing the stud through the interference threads, the stud is screwed into the threaded hole of the dual-purpose tool, and the stud is manually screwed into a workpiece to the needed size. When the tool is used for screwing the stud through the unthreaded hole, the handle of the dual-purpose tool is taken down; a standard drill chuck is arranged in a taper hole of a drill machine spindle; the dual-purpose tool is arranged in the standard drill chuck and is screwed tightly; the stud is screwed into the threaded hole of the dual-purpose tool (3E), and the work stroke of a drill machine is adjusted; the rotating speed of the drill machine is adjusted to be between 50 r / min and 100 r / min, and the stud is screwed into the workpiece to the needed size.

The invention relates to a half-hot-melting motorcycle tyre and a preparation method of the half-hot-melting motorcycle tyre. The half-hot-melting motorcycle tyre is prepared by mixing and vulcanizing the raw materials comprising synthetic adhesive, solution polymerized styrene butadiene rubber, carbon black N339, aromatic hydrocarbon oil, zinc oxide, stearic acid, an anti-ozone age resister, protective wax, sulfur, an accelerant and a scorch retarder. Compared with the prior art, the half-hot-melting motorcycle tyre effectively solves the problem that the use of the conventional full-hot-melting tyre is limited, the road holding of the tyre is improved, the tyre is prevented from adsorbing too many foreign objects such as gravel and dust as a result of soft and sticky tyre surface, the phenomena of out of control of the tyre and excursion at a corner cannot occur frequently, so that the operation safety of vehicles is greatly improved, sufficient guarantee is provided for high road holding, operability and safety of vehicles. The half-hot-melting motorcycle tyre is suitable for being popularized and applied to tyres of motorcycles and the like.

A high-strength steel elastic ductility control structure comprises stand columns made of a high-strength steel material and a structural body composed of beams horizontally arranged among the stand columns at intervals. The beams and the stand columns are connected through semi-rigid joints or hinge joints. The structural body is divided by the beams into at least one anti-seismic energy-consuming area. An anti-seismic energy-consuming device is arranged in each anti-seismic energy-consuming area. By means of the high-strength steel elastic ductility control structure, it is ensured that a high-strength steel component is in an elastic state in normal use under the effect of an earthquake, the problem that a traditional high-strength steel structural system is limitedly used in an anti-seismic fortification area due to the ductility problem is solved, the application range of the high-strength steel structure is expanded, and the advantages of the high-strength steel can be more sufficiently and effectively brought into play.

The invention relates to a connecting piece, a transmission unit and a transmission device which use the connecting piece. The connecting piece comprises a first connecting rod a, a first connecting rod b, and a second connecting rod, wherein the first connecting rod a and the first connecting rod b are arranged in a mutual crossing manner; the included angle between the first connecting rod a andthe first connecting rod b is adjustable; one end of the second connecting rod is movably connected to one end of the first connecting rod a; and the other end of the second connecting rod moves up and down along a straight line along with the change of the included angle between the first connecting rod a and the first connecting rod b. When the vertical angle of a transmission platform and a support changes, the connecting piece does not give thrust to the support, so that the support can be kept moving vertically.

The invention provides a network communication-based central-system network early warning alarm system and method. The system comprises an early warning alarm data processing center, a mobile terminal, a security and Internet-of-Things alarm device, an early warning publishing terminal, a short message receiving terminal, a network alarm receiving platform and a police distribution mobile terminal, wherein the early warning alarm data processing center, the mobile terminal, the security and Internet-of-Things alarm device, the early warning publishing terminal, the short message receiving terminal, the network alarm receiving platform and the police distribution mobile terminal can constitute a central-system early warning alarm network by means of the Internet. With the network communication-based central-system network early warning alarm system and method of the invention adopted, the problem that an existing domestic decentralized-mode network alarm system is limited by regions, police situations and equipment is solved; a security and protection system-equipment-Internet of Things unified networked automatic alarm function is realized; early warning information can be timely and accurately sent to people who should obtain early warnings in disaster, accident and event early warning; and the technical blank that no advanced application examples and methods can be used for reference at home and abroad at present is filled up.

The invention belongs to the field of auxiliary transport vehicles for coal mines and provides a double-stage parallel-connection rigid power transmission system for an auxiliary transport vehicle under a low type coal mine in order to solve the problem of use limitation of the transport vehicle under the low coal mine. The system comprises a drive axle main body and two groups of wheel side brakes, wherein the two groups of wheel side brakes are connected in parallel to two sides of the rear of the drive axle main body respectively through transmission mechanisms in a transmission ratio being 1; each transmission mechanism comprises two transmission cases rigidly connected through a transmission shaft, one transmission case is connected with a middle half axle of the drive axle main body, and the other transmission case is connected with the corresponding wheel side brake. According to the system, a conventional wet type drive axle is effectively separated, so that the drive axle main body moves forwards and is closer to the hinged position of the vehicle while the tire installation positions are not changed, original drive axle installation space is saved for goods loading, more loading space is saved for a rear rack, and the problem of use limitation of the transport vehicle under the low type or ultra-low type coal mine is solved.

The invention discloses a method for establishing a prediction model of moisture absorption capacity of a composite stiffened plate and a prediction method thereof. The method comprises the steps of:firstly, dividing a moisture absorption process of an I-shaped rib composite material stiffened plate in a certain humid and hot environment into a first moisture absorption stage and a second moisture absorption stage according to the structure of the I-shaped rib composite material stiffened plate, and acquiring demarcation moisture absorption capacity of the two moisture absorption stages; secondly, based on a traditional Fick moisture absorption model, considering the side edge moisture absorption capacity of the I-shaped rib composite material stiffened plate in the two moisture absorption stages to obtain the moisture absorption capacity of the I-shaped rib composite material stiffened plate in the first moisture absorption stage and the second moisture absorption stage; and acquiring a prediction model of the moisture absorption capacity of the I-shaped rib composite material stiffened plate in the humid and hot environment by combining the demarcation moisture absorption capacity of the I-shaped rib composite material stiffened plate in the first moisture absorption stage and the second moisture absorption stage and the moisture absorption capacity of the I-shaped rib composite material stiffened plate in the first moisture absorption stage and the second moisture absorption stage, and predicting the moisture absorption capacity by utilizing the prediction model. By adopting the method, the prediction result is more accurate and the prediction precision is higher.

The invention relates to a tandem type solar hot water device. A plurality of vacuum heat-absorbing tubes are connected in series through a connecting pipeline to form a water circulation loop, a plurality of water tanks are connected to the connecting pipeline of the water circulation loop in parallel, and circulating water pumps used for forcing water in the pipeline to circulate are connected to the connecting pipeline between the water tanks and the vacuum heat-absorbing tubes; each water tank is provided with a water inlet pipe and a water outlet pipe, magnetic valves are connected between each water inlet pipe and the connecting pipeline and between each water outlet pipe and the connecting pipeline respectively, and a magnetic valve is connected to the portion, between the two magnetic valves, of the connecting pipeline. According to the tandem type solar hot water device, the connecting mode of the vacuum heat-absorbing tubes is changed based on a common household solar water heater, the tandem type structure is adopted, and the water tanks and the vacuum heat-absorbing tubes are designed into standard individual parts, so users can match the vacuum heat-absorbing tubes and the water tanks according to water consumption of the users and local weather conditions each year. Therefore, water can be heated to the sufficient temperature even on a cloudy day so as to reduce extra power consumption due to switching of electric heating.

The invention discloses a safety valve for low-temperature and low-pressure working conditions. The safety valve comprises a valve body, a valve seat, a diaphragm, a valve clack, a spring and an upper spring seat, the valve body is of a cavity structure with the two ends being solid parts and the middle being hollow, one end of the valve seat is connected with the solid parts of the valve body, the other end of the valve seat is in contact with one end of the diaphragm, the other end of the diaphragm is fixedly connected with the valve clack, the spring is arranged at the end, away from the diaphragm, of the valve clack, and the spring is arranged between the valve clack and the upper spring seat. When a system pressure reaches the set pressure, the valve clack drives the spring to move towards the side away from the valve body, the diaphragm is separated from the valve body, sealing of the cavity structure is relieved, and therefore a medium is discharged from an outlet of the valve body. When the system pressure is reduced to a return pressure, the valve clack drives the spring to move towards one side of the valve body, and the diaphragm makes contact with the valve body so as to seal the outlet of the valve body. The purpose that the whole valve is free of leakage under the low-temperature and low-pressure working conditions can be achieved.

The invention discloses an industrial robot based on an AGV, and belongs to the field of industrial robots. The industrial robot comprises an AGV trolley, a control unit, two clamping mechanisms and atransport cleaning brush track set, wherein the two clamping mechanisms are installed on two sides of the AGV trolley correspondingly, and the transport cleaning brush track set is arranged between the two clamping mechanisms; and a clamping part is arranged at the two ends of each clamping mechanism, the two clamping parts located at one end of the transport cleaning brush track set clamp an object and place the object at the end of the transport cleaning brush track set, the object is brushed by the transport cleaning brush track set and is transported to the other end, and then the objectis clamped by the two clamping parts located at the other end of the transport cleaning brush track set and is placed at a designated position. According to the industrial robot based on the AGV, operations such as turning, turning back and the like of the AGV trolley are reduced and even eliminated; and the surface of the object is cleaned while the object is conveyed from the front end to the rear end through the transport cleaning brush track set, the function integration degree is high, and the procedures of cleaning the surface of the object independently are saved.

An embodiment of the invention discloses a signal processing method and device for an earphone and the earphone. The signal processing method for the earphone comprises the following steps: when the electric quantity of a built-in battery in the earphone is larger than an electric quantity threshold value, the earphone is connected with a mobile device through a wireless network to receive audio digital signals transmitted by the mobile device through the wireless network and converts the audio digital signals into analog signals for earphone earpieces to play; and when the electric quantity of the built-in battery in the earphone is equal to or smaller than the electric quantity threshold value, the earphone is connected with the mobile device through a data line to receive the audio digital signals transmitted by the mobile device through the data line, and converts the audio digital signals into analog signals for the earphone earpieces to play. According to the signal processing method for the earphone, the earphone can be connected with the mobile device through the data line and the wireless network two modes; and a wired mode and a wireless mode can be supported simultaneously.

The invention provides a soluble fiber, which mostly adopts K2O with a lower melting point. When the K2O with the lower melting point is co-melted with other components according to a certain matchingratio, the use temperature of the prepared soluble fiber is effectively improved. Compared with the prior art, MgO with a higher melting point is omitted, so that the obtained soluble fiber has a remarkably higher eutectic point temperature, the remarkably higher use temperature is obtained, and the problem that the soluble fiber is limited in use in a high-temperature environment is solved. Meanwhile, the soluble fiber provided by the invention has a better mechanical property at high temperature, while a dissolving property of the soluble fiber is not affected. The obtained soluble fiber isapplied to a soluble fiber board, so that the prepared soluble fiber board has the higher use temperature and the better mechanical property at high temperature, while a dissolving property of the soluble fiber board is not affected at the same time.

The invention discloses an Hibiseu manihot selenium-enriched chewable tablet and a preparation method thereof. The Hibiseu manihot selenium-enriched chewable tablet comprises the following components in percentage by mass: 4.9-7.2% of povidone, 1.1-1.5% of magnesium stearate, 0.7-3.1% of stevioside, 2.9-5.2% of anhydrous citric acid, 6.2-8.3% of orange essence and 73.6-83.6% of Hibiseu manihot powder. The method includes: preparing a soft material, and performing granulating and tabletting to obtain a finished product. According to the Hibiseu manihot selenium-enriched chewable tablet, the selenium content in a single chewable tablet is increased, the selenium-enriched health-care effect of the Hibiseu manihot selenium-enriched chewable tablet is better reflected, and the Hibiseu manihot selenium-enriched chewable tablet is very suitable for special crowds such as diabetes and obesity patients. After being fully chewed, the absorption of the medicinal components is facilitated.

The invention discloses an okra and turmeric orally disintegrating tablet and a preparation method thereof, and relates to the technical field of health-care medicines. The okra and turmeric orally disintegrating tablet is prepared from the following components in parts by mass: okra and turmeric powder, silicified microcrystalline cellulose, matcha powder, mannitol, stevioside and cooling alcohol. The okra and turmeric powder comprises okra powder and turmeric powder. According to the okra and turmeric orally disintegrating tablet provided by the invention, under the combined action of the parts, the okra and turmeric orally disintegrating tablet which melts in the mouth, is cool, refreshing and tasty, tastes good and is suitable for various people to eat is obtained.

The embodiment of the invention provides a drift diagnosis method and device of a sensor, electronic equipment and a storage medium, and relates to the technical field of air conditioners. The method comprises the following steps: respectively acquiring a true value of a to-be-diagnosed sensor and a pre-established initial virtual value of a virtual sensor corresponding to the to-be-diagnosed sensor; calculating an error between the true value and the initial virtual value; judging whether the error is greater than a preset threshold value or not; if yes, taking the true value and the initial virtual value as input, and calculating an associated virtual value of an associated sensor related to the to-be-diagnosed sensor; and judging whether the associated virtual value is greater than a sensitivity error or not so as to determine whether the sensor to be diagnosed and the characteristic parameters of the corresponding part drift or not, and providing a general judgment method for the drift of the characteristic parameters of the sensor and the part. Therefore, the problem that use is limited due to the fact that a general method cannot be used for judgment in an existing method is solved.

The invention relates to a surface temperature generation method, in particular to an all-weather surface temperature generation method having a spatial resolution of 1 km. The method of the inventionhas the advantages that the bottleneck of acquiring all-weather surface temperature under the spatial resolution of 1 km traditionally can be broken through; the passive microwave surface temperatureunder the spatial resolution of 1 km is acquired directly from the passive microwave brightness temperature by considering the correlation of temporal and spatial dimensional changes of surface temperature and brightness temperature; from the aspect of decomposing surface temperature-time components, three components of the surface temperature are formed by extracting from both thermal infrared and the passive microwave remote-sensing surface temperature, the components are effectively combined by means of the spatial correlation of the surface temperature, and the integrated all-weather surface temperature under the spatial resolution of 1 km is acquired accordingly. Compared with traditional experiential methods, the method of the invention has the advantages that the method is better in precision, popularization and transplantability, the traditional plaque effect integrated with surface temperature images can be maximally weakened, and image quality can be improved.