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 discloses a clamping size radially-adjustable fixture, and aims to solve the problem that a conventional fixture can only be used for clamping a workpiece with a fixed size and the use of the fixture is limited. The clamping size radially-adjustable fixture comprises a base, wherein a sliding chute is formed in the base; a plurality of positioning holes and inserted pins which can be inserted into the positioning holes for positioning are arranged at the bottom of the sliding chute; two opposite clamping tables are arranged on the sliding chute; the opposite ends of the two clamping tables form a V-shaped clamping part; a first upright post is arranged on one clamping table, and a jacking block capable of radially sliding along the first upright post is arranged above the first upright post; a second upright post is arranged on the other clamping table, and a pressure plate is hinged to the second upright post; a first inclined surface is arranged on the end part of the jacking block; a second inclined surface is arranged on the end part of the pressure plate; the first inclined surface can be pressed against the second inclined surface to enable the pressure plate to move downwards. The fixture can be used for clamping shaft workpieces with various radial sizes.

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 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 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 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.

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.