297results about How to "Guaranteed life" patented technology

The invention discloses a method for testing mechanical property and reliability of a thin film material of a micro-electromechanical system (MEMS) and a testing device thereof. A thin film testing structure with a suspended membrane is fixed on a sample platform with a gas passage and a differential pressure is imposed on one side of the suspended membrane to cause the other side of the suspended membrane to be deformed and heave; the deflection at the center of the membrane under the impressed pressure is measured, namely the maximum deflection of the membrane and the pressure is gradually increased to cause the suspended membrane to fracture; such parameters related to the mechanical property and reliability of the tested thin film material as plane strain modulus, Young modulus, Poisson ratio, residual stress, rupture strength and the like are extracted and obtained with the measurement of a pressure-deflection change curve and in accordance with a theory calculating model. The invention adopts a non-contact optical method, utilizes a data acquisition and control unit to automatically implement the measurement of the deflection and is characterized by simple sample preparation and testing, high measurement accuracy, convenient and flexible operation and high testing efficiency.

The invention provides a deep sea optical cable and producing method thereof, relating to a deep sea optical cable with a tension-resistant compact composite structure and producing method thereof. The structure of the deep sea optical cable comprises a plurality of full chromatogram high-strength optical fibres, high-strength anti-corrosion stainless steel tubes, ointment exclusive for sea cable optical fibre, special-high-strength armouring wires with three diversified diameters, a heavy viscous waterproof agent, metallic conductor brass pipes, organic plastic composite materials, and a polythene insulation material protective layer. High-strength anti-corrosion stainless steel tubes are sleeved on several full chromatogram high-strength optical fibres, ointment exclusive for sea cable optical fibre is filled into the high-strength anti-corrosion stainless steel tubes, special-high-strength armouring wires with three diversified diameters are inlaid on the outside of the high-strength anti-corrosion stainless steel tubes and are filled with heavy viscous waterproof agent of sufficient amount, the special-high-strength armouring wires are covered with the metallic conductor brass pipes, so that special tension-resistant compact composite structure is formed. Organic plastic composite materials are added on metallic conductor brass pipes, and then an insulation material protective layer is extruded thereon.

The invention discloses a graphene-bismuth oxide composite material. The graphene-bismuth oxide composite material comprises graphene as well as bismuth oxide loaded on a graphene sheet layer, wherein the mass ratio of bismuth oxide to graphene is (0.005-0.25):1. The invention also discloses a preparation method of the composite material as well as lead carbon battery cathode diachylon comprising the composite material as well as a preparation method of the lead carbon battery cathode diachylon and a lead carbon battery cathode plate. According to the invention, the generation of hydrogen on the surface of graphene is inhibited by loading bismuth oxide on the sheet layer of graphene, so that the hydrogen evolution phenomenon of the lead carbon battery cathode plate is inhibited; the reduction of lead carbon battery current efficiency and the battery water loss phenomenon are prevented effectively; the service life of the lead carbon battery is ensured.

The invention relates to a building material and a method for preparing the same, in particular to a glass fiber reinforced cement board and a method for preparing the same. The glass fiber reinforced cement board comprises the following components in weight portion: 100 portions of Portland cement, 13.6 to 15 portions of high alumina cement, 3.1 to 3.4 portions of fly ash, 5.7 to 6.3 percent of plaster stone powder, 120 to 132 portions of ceramsite, 6.5 to 7.1 percent of foaming agent, 74.5 to 81.3 percent of dispersing agent, 53 to 58.7 portions of pure water and 3.6 to 4 portions of plastic-coated glass fiber grid cloth. The preparation method sequentially comprises the following steps: mixing weighed-up solid materials, adding weighed-up liquid materials in the previous step, cavity forming, roll extruding, vibration, cutting and curing. The invention has the advantages that: the glass fiber reinforced cement board has advantages of light volume weight, high strength, low dry shrinkage wet swelling coefficient, no after expansion and shrinkage, corrosion resistance, sound insulation, heat insulation, fire resistance and non-combustion; the preparation method has the characteristics of scientific and reasonable method, continuous production, high efficiency and low cost, flat board surface, convenient in-site mounting and the like; the glass fiber reinforced cement board is good in water resistance, and particularly applied to the finishing of internal and external walls and ceilings of various buildings in wet environments; moreover, the glass fiber reinforced cement board and a method for preparing the same have the advantages of ensuring the strength and service life of cement due to the adoption of the plastic-coated anti-alkali glass fiber grid cloth, along with reasonable blending ratio and reduced alkalinity.

The invention discloses a coupler synchronous type double-horizontal shaft vibration stirring machine, which comprises a machine frame and a vibration stirring device installed on the machine frame. Stirring drive and transmission devices are arranged at the left end of the vibration stirring device. Vibration drive and transmission devices are arranged at the right end of the vibration stirring device. The stirring drive and transmission devices and the vibration drive and transmission devices are installed on the machine frame. The vibration stirring device comprises a stirring cylinder and two stirring mechanisms. Both the two stirring mechanisms comprise hollow stirring shafts and a plurality of stirring units. The two stirring drive and transmission devices are respectively installed at the left ends of the two hollow stirring shafts. Synchronous couplers are installed between the two stirring drive and transmission devices. The two vibration drive and transmission devices are respectively installed at the right ends of the two hollow stirring shafts and respectively and fixedly connected with two vibration shafts. The coupler synchronous type double-horizontal shaft vibration stirring machine disclosed by the invention is simple and rational in structure and convenient for use; and mixed materials can be uniform in macroscopic and microscopic manners during a short time, thus, the stirring quality and the stirring efficiency are increased.

The invention discloses a closed oil film visualization device capable of measuring leakage of a reciprocating sealing piston. The device comprises a tabletop visualization mechanism and an oil supply system, wherein the tabletop visualization mechanism comprises a top plate, a base frame, a linear actuator, a pull pressure sensor, a piston and a transparent cylinder; lower leaked liquid detecting components are arranged around the bottom of the piston; an upper leaked liquid height detecting component and a microscope observation component are arranged on the side wall of the base frame; a vertical oil way and a horizontal oil way are arranged in the piston; the two ends of the horizontal oil way penetrate through the side wall of the piston; the vertical oil way is connected and communicated with the upper leaked liquid height detecting component; an annular groove is peripherally formed in the middle part of the piston to serve as an oil closed cavity to be connected to the oil supply system; and gaps are formed in the side surface of the piston and the inner wall of the transparent cylinder. The device solves the technical difficulties in a traditional device, supplies stable liquid pressure, guarantees the bearing capacity and the service life of a glass cylinder, and detects the sealing leakage quantity or the magnitude of pumping back quantity.

The invention discloses a recovery method of blast furnace slag water residual heat and method thereof. The recovery system of resudual heat includes a blast furnace slag system, a sedimentation tank, a hydrocyclone separator, a water pump, a heat exchanger, a steam turbine, a refrigerant condenser, a refrigerant pump. The recovery method is that applying bicirculating low temperature hot water generation system to recovery residual heat and penerating power. The specific process is: guiding the blast furnace slag water into the heat exchanger after preprocessing of impurity precipitation and transmitting heat to low boiling refrigerant; the low boiling refrigerant absorbing heat in the heat exchanger and entering the steam turbine for expansion of doing work; the refrigerant after doing wirk changing into low-pressure superheated steam, the low-pressure superheated steam entering the concenser to releast heat and changing into liquid refrigerant of low-temperature and low-pressure, then being sent to the heat exchanger by the refrigerant pump for absorbing heat, becoming the superheated steam again to push the steam turbine to do work. The invention can recovery residual heat of the blast furnace slag water and generate power, and reduce energy consumption in steel production; and reduce temperature of blast furnace slag water which is benefit to improve quality of blast furnace water slag and reduce discharge of sulphide in slag washing process.

The invention discloses a foaming type polyurethane wave-absorbing material and a preparation method thereof. The foaming type polyurethane wave-absorbing material is prepared in the way that a wave-absorbing material, a fire retardant and an additive are directly added to semi-rigid foam and rigid foam polyurethane which serve as carriers. The preparation method comprises the steps of: firstly, dividing the polyurethane raw material into a component A and a component B, wherein the component A is diisocyanate or a derivative of diisocyanate, the component B is polyether glycol or polyester polyol; adding the additive into the component B, mixing and stirring uniformly for later use, adding the fire retardant and the wave absorbing material in the component A or B in any proportion, respectively pouring the prepared components A and B which are uniformly mixed into two material tanks of a low-pressure polyurethane pouring machine, then pouring the prepared material into a mould by using the pouring machine, foaming for 6-8min and then opening the mould, taking a product out, curing the product for 0.5-2 days, and finishing to obtain the foaming type polyurethane wave-absorbing material. The foaming type polyurethane wave-absorbing material has the advantages of strong wave absorbing property and stable reflectivity, and is suitable for mass production.

The invention discloses a sliding bearing with micro holes on the inner wall thereof, which is prepared through the steps of welding a bearing bush and a bearing lining the surface of which is uniformly provided with micro through holes; and then rolling, wherein the bearing lining is arranged in the bearing bush; the total area of the micro through holes on the surface of the bearing lining accounts for 10 to 20 percent of the surface area of the inner wall of the bearing lining; and the ratio of depth to diameter of the micro through holes on the surface of the bearing lining is 0.05 to 0.2. The sliding bearing disclosed by the invention has the advantages that the micro through holes on the bearing lining form micro grooves on the inner wall of the sliding bearing, and the micro grooves are used for storing the lubricating oil, and when sufficient lubricating oil is stored in the micro grooves, a dynamic pressure oil film is formed between the bearing bush of the sliding bearing and an axle journal rubbing pair, thereby reducing the rubbing wear; the elastic deformation of the bearing lining is enlarged, the rubbing pair is in an elastic hydrodynamic lubrication state, and the bearing is good in abrasion resistance and obvious in lubrication effect; and the bearing is simple in processing and easy to manufacture.

The present invention relates to a driving method and device of an AMOLED panel. The driving method of the AMOLED panel comprises a step 10 of detecting the temperature of a detection point of a display panel; a step 20 of calculating a driving current corresponding to the temperature according to a preset function relationship of the temperatures of the display panel and the driving currents; a step 30 of comparing the driving current and a preset threshold current to obtain the compensation gain of the driving current; a step 40 of adjusting a data signal and a gamma signal for driving the display panel according to the compensation gain of the driving current; a step 50 of real-timely detecting the brightness of the display panel, when the brightness attenuates to a preset threshold value, compensating the brightness to the initial brightness by improving the driving current. The present invention also provides the corresponding device. According to the driving method and device of the AMOLED panel provided by the present invention, under the premise that the driving current of the panel is constant, by an OLED service life promotion algorithm, the service life of the OLED panel can be prolonged, and further the accuracy of a service life promotion model of an OLED device is guaranteed.

The invention discloses a vehicle-mounted intelligent charging system and method. The method includes the steps that S1, needed charging parameters are obtained; S2, remaining essential charging time and remaining charging time are calculated in real time according to the obtained charging parameters; S3, whether the remaining charging time is longer than the remaining essential charging time is judged, if yes, a low-price stage is started and the step S4 is executed at the moment, and if not, a capacity expansion stage is started and a power grid is forced to charge a battery; and S4, whether the current real-time electricity price is lower than a set electricity price threshold value is judged, if yes, the power grid is made to charge the battery until the electricity quantity reaches set target electricity quantity of the low-price stage, and if not, charging of the battery is suspended until the next electricity price judging moment; the set target electricity quantity of the low-price stage is within the healthy capacity range of the battery. The vehicle-mounted intelligent charging system and method have the advantages of being comprehensive, reliable and high in intelligence degree, and can be widely applied to the technical field of charging.

The invention discloses a blast furnace stemming for repairing and protecting an iron notch, which belongs to the field of refractory materials. According to the invention, the blast furnace stemming comprises the following components in parts by weight: 10-20 parts of corundum, 5-15 parts of homogenizing material, 10-20 parts of coal gangue, 10-25 parts of pyrophyllite, 10-20 parts of composite clay, 10-35 parts of composite powder, 5-20 parts of vanadium-titanium-iron powder, 1-8 parts of silicon nitride iron, 0.1-0.5 parts of wetting agent and 15-22 parts of addition bonding agent, whereinthe composite powder is the mixture of oxide and nonmetal carbide. The blast furnace stemming for repairing and protecting the iron notch, disclosed by the invention, has the advantages of no generation of toxic black smoke, no fractured iron, strong slag resistance, particular suitability for being used in the blast furnace in the later stage and capability of obviously prolonging the service life of the blast furnace; and problems of the traditional stemming, like poor adaptability, large quality fluctuation, short service life, serious pollution and the like, are effectively solved.

The invention relates to a longitudinal dual clutch automatic transmission device with a direct gear. The device comprises a first clutch, a second clutch, and two input shafts which are fixedly connected with the clutches and are coaxial to each other, wherein a first input shaft gear is arranged on the first input shaft; a fifth synchronizer and an output shaft are arranged at an outward extending end of the first input shaft; a first reverse gear driven gear, a second and third gear driven gear and a fourth and fifth gear driven gear are arranged on the output shaft in sequence; a first intermediate shaft, a second intermediate shaft and a reverse gear shaft are respectively parallel to the output shaft; a first intermediate shaft gear, a fourth gear driving gear, a third synchronizer, a first synchronizer, a second gear driving gear and a reverse gear driving gear are arranged on the first intermediate shaft in sequence; a second intermediate shaft gear, a fifth gear driving gear, a fourth synchronizer, a second synchronizer, a third gear driving gear and a first gear driving gear are arranged on the second intermediate shaft in sequence; and a reverse gear intermediate gear is arranged on the reverse gear shaft. The longitudinal dual clutch automatic transmission device comprises the direct gear and has high transmission efficiency; and a gear is shared by a plurality of gears, and the axial length is short.

The invention belongs to the field of medical and molecular imaging, and relates to a universal automated synthesizer of an <18F>-marked PET (positron emission tomograph)/CT (computerized tomograph) molecular image probe. The automated synthesizer comprises cylinders having different specifications and being positioned at different positions, a reagent bottle, a reaction bottle, a heating/cooling module, a control electromagnetic valve, a PTFE pipe, an N2 pipe and a vacuum pipe, the synthesizer can separate the opened/atmospheric chemical treatment from closed/high-temperature chemical treatment process in the same reaction bottle at different positions, so that corrosion of high-temperature solution to various control elements can be avoided. Various common <18>F-marked PET/CT molecular image probes can be synthesized and comprise <18>F-FDG, <18>F-FLT, <18>F-FES, <18>F-FMISO, <18>F-FHBG, <18>F-FET, <18>F-FAC, <18>F-FeCH, <18>F-FCH and <18>F-marked intermediate <18>F-SFB and <18>F-FBEM. The synthesizer is simple in structure, stable in performance, convenient to use, and suitable for synthesis, research and development of various <18>F-marked PET/CT molecular image probes.

The invention discloses a display panel and a manufacturing method thereof, and a display device. The display panel comprises an installation hole and a packaging area surrounding the installation hole. The packaging area comprises a substrate base plate and an isolation structure arranged on the substrate base plate. The isolation structure comprises an isolation column and gentle layers formed behind the isolation column and located on two sides of the isolation column. Each gentle layer comprises a filling part making contact with a side wall of the isolation column, and a surface of one side, deviating from the substrate base plate, of the filling part is gradually away from the substrate base plate in a direction from a position away from the isolation column to the position close tothe isolation column. By using the display panel, a sharp surface located at a bottom of the side wall of the isolation column is eliminated so that the surface of the bottom of the side wall of the isolation column is gentle, a film thickness of an inorganic packaging layer can be more uniform, packaging failure is avoided, a packaging effect is guaranteed, and a service life of a display area OLED is ensured.

The invention discloses an optical fiber sensing device based on optical fiber bending deformation. The sensing device is characterized by comprising a baseplate I, wherein at least one of the baseplate I, a fish back I and a fish back II arranged on the baseplate I or at least one part of three is composed of a function material, and the fish back I is provided with a deformation teeth I; the fish back II is provided with a deformation teeth II, the deformation teeth I and the deformation teeth II are corresponding in a staggered manner, the deformation teeth II is provided with a signal optical fiber, and the signal optical fiber is a of multiturn surrounding shape and clamped between the deformation teeth I and the deformation teeth II; and the signal optical fiber is connected with a prolonging optical fiber, the prolonging optical fiber is connected with a testing unit, and the testing unit is connected with a processing unit. The sensing device provided by the invention has the advantages of being capable of carrying out amplification on the collected physical quantity, improving the accuracy of the sensing device combine and prolonging the service life of the signal optical fiber; and the structure is simple, and the sensing device is convenient to use and convenient to popularize and use.

The invention relates to an illumination driving device. The illumination driving device comprises an alternating current power supply, a rectifier module, a voltage boosting module, a constant current module, a first voltage detecting module, a second voltage detecting module, an electric current detecting unit and a control module, wherein the alternating current power supply is used for providing input current, the rectifier module is used for converting the input current to direct current and supplying power for the control module, the voltage boosting module is used for increasing input voltage, the constant current module is used for outputting constant voltage to a load according to the input voltage, the first voltage detecting module detects voltage output to the constant current module, the second voltage detecting module detects voltage output by the voltage boosting module, the electric current detecting unit detects load current, and the control module is used for outputting a first control signal to drive the voltage boosting module when a detecting value of the first voltage detecting module is smaller than a first preset value, outputting a second control signal to switch off the voltage boosting module when a detecting value of the second voltage detecting module is larger than a second preset value, starting the constant current module and outputting a third control signal to switch off the constant current module when a voltage value detected by the electric current detecting unit is larger than a third preset value. The illumination driving device ceaselessly provides power for the load, so that the problem that the load is burnt out due to discontinuous current is prevented.

The invention discloses a novel liner plate structure used for a large autogenous mill. The novel liner plate structure comprises a feeding end liner plate, a cylinder liner plate, a discharging end liner plate and a filling ring. The feeding end liner plate comprises a feeding end inner ring liner plate body, a feeding end middle ring liner plate body and a feeding end outer ring liner plate body, all of which are sequentially connected. The cylinder liner plate comprises a feeding end cylinder liner plate body, a middle section cylinder liner plate body and a discharging end cylinder liner plate body. The discharging end liner plate comprises a grid plate, an insensate stone window, an external ore pulp elevator, a discharging end middle liner plate body, a middle ore pulp elevator, an inner ring ore pulp elevator, a material discharging device and the like. A flat-head bolt hole is formed in the material discharging device, and an anti-loosening structure is further arranged at the position, corresponding to the flat-head bolt hole, on the material discharging device. The anti-loosening structure comprises a flat-head bolt, an anti-loosening steel bowl, a large gasket, a lock nut, an anti-loosening bolt, an anti-loosening nut and the like. The problems that during running of the mill, ore pulp circular flow scours an end cover, the filling ring falls, the service life of the cylinder liner plate bodies is not equal, discharging cannot be conducted in time through a discharging opening, the flat-head bolt loosens, and insensate stone is not discharged smoothly can be effectively solved.

A five-axis NC machine tool for carving and processing false teeth fixed in human oral cavity. For solving the problems that during the cutting operation, generated cutting scraps generated in the machine tool and cutting cooling fluid required to be added both can enter screw and guide rail transmission systems of three linear shafts to cause abrasion even damage on the transmission system, the NC machine tool is designed in the manner that three linear shafts are all arranged at one side while a processed work piece and a rotary shaft are arranged at the other side, wherein a separation structure made of elastic materials arranged in the middle, so that the problem of invasion on all transmission shaft due to dust and cooling fluid during operation of the machine tool.

The invention discloses a cleaning method and device for an engine. The cleaning method comprises the steps for cleaning a combustion chamber of the engine, specifically, an appropriate number of cleaning agents are added into the combustion chamber; ultrasonic waves are transmitted to the cleaning agents through an energy-concentrating-type ultrasonic amplitude transformer, so that the cleaning agents vibrate, and then carbon deposits on the inner wall of the combustion chamber fall off; the cleaning agents and the fallen-off carbon deposits are sucked out of the combustion chamber through amaterial suction pipe; and the fallen-off carbon deposits remaining in the combustion chamber are blown out through a blower gun, and the combustion chamber is blow-dried. The invention further discloses the ultrasonic cleaning device for the engine. The ultrasonic cleaning device comprises the energy-concentrating-type ultrasonic amplitude transformer matched with the combustion chamber of the engine and provided with a specific structure. According to the technical scheme, the cleaning agents do not need to be heated up and do not need have the high PH value, then the car engine can be effectively cleaned, and corrosion of cleaning liquid to the car engine can further be effectively avoided.

The invention relates to a filter core management method. The filter core management method comprises the following steps: acquiring water quality information of a waterway of a water purification device and matching a filter core for the water purification device according to the water quality information. According to the technical scheme of the embodiment, each water purification device can be provided with the filter core in a matched manner according to the water quality information, the water purification quality of the water purification device is ensured, the water quality safety of different regions is ensured and the life of the filter core is well guaranteed.

The invention discloses a linear compressor which comprises an exhaust mechanism and a compressor assembly. The exhausting mechanism comprises an exhaust valve disc, an exhaust valve plate, a pre-tightening spring and an exhaust cavity cover; the exhaust valve plate is arranged at the end part of a cylinder; both an exhaust hole and the exhaust valve disc are arranged on the exhaust valve plate; the exhaust cavity cover is fastened on the wall surface of the outer end of the cylinder to form a closed cavity which is used as an exhaust cavity of the compressor; the pre-tightening spring is arranged in the exhaust cavity. The linear compressor successfully solves the problem of a harsh result that when the linear compressor operates abnormally, a piston or the exhaust valve plate is damaged or both the piston or the exhaust valve plate are damaged due to cylinder collision. When the compressor operates normally, a pre-tightening force provided by the pre-tightening spring of the exhaust mechanism are sufficient to counteract a pressure applied to the exhaust valve plate by gas compression. The exhaust mechanism can effectively ensure operation stability of the compressor, guarantees service life of the compressor, is beneficial to regulation of a control system and ensures implementation of accurate control. The spring is additionally arranged, and thus, the size of the exhaust cavity is increased and exhaust noise can be reduced.

The invention belongs to the technical field of electric vehicles, and particularly discloses an electric vehicle thermal management system and an electric vehicle, and the electric vehicle thermal management system comprises a battery control loop and a power system control loop. The battery control loop is coupled to a battery pack of the electric vehicle; the power system control loop comprisesa main path, a first branch path and a second branch path, heat transfer fluid in the power system control loop can flow into the first branch path and the second branch path from the main path and finally flows back to the main path, a radiator is arranged on the main path, the first branch path is coupled to at least one power system component of the electric automobile, and a switch valve is arranged on the second branch path. A first valve assembly which can couple the second branch path with the battery control loop, and the second valve assembly which can disconnect or connect the radiator with the main path are also included. The battery pack is heated by utilizing the waste heat of the power system component to ensure the low-temperature discharge power of the battery; the power system and the battery pack share the radiator for heat dissipation, the starting time of a cooling device of the battery pack is shortened, and energy consumption is reduced.

The invention discloses a projector and a control method of the running state of a cooling fan of the projector and is characterized in that temperature of essential parts in heat dissipation areas inside a case is detected, the corresponding cooling fan starts to run or keeps running when the detected temperature is higher than or equal to the given temperature while the corresponding cooling fan stops running when the detected temperature is lower than the given temperature. By detecting the temperature of selected corresponding essential parts inside the case of the projector, the control method of the invention controls the running states of corresponding cooling fans, optimizes the running time of the fans, ensures the service life of the machine, saves the energy and reduces the consumption at the same time.

The invention discloses cathode salt, a preparation method thereof, a barium-tungsten cathode containing the cathode salt and a preparation method of the barium-tungsten cathode. The cathode salt contained in the cathode comprises BaCO3, CaCO3 and Al2O3, the substance amount ratio among the BaCO3, the CaCO3 and the Al2O3 is 4-5:0.4-0.7:1, and the preparation method of the cathode salt includes the steps of weighing, ball milling, briquetting and sintering. The preparation method of the barium-tungsten cathode containing the cathode salt includes: preparing a cathode substrate, preparing the cathode salt, dipping the cathode salt, lathing the cathode and laminating the emitting surface of the cathode. The barium-tungsten cathode prepared by the cathode salt is resistant to ion bombardment, the service life of microwave tubes is long, and each technical index can meet design requirements.

The invention discloses a backlight module and a liquid crystal display device. According to the backlight module, a fluorescent powder layer and a luminescent device are respectively arranged on two substrates which are oppositely arranged, and the fluorescent powder layer and the luminescent device are separately arranged, so that, compared with the prior art that fluorescent powder is directly coated on the luminescent device, the back module has the advantage that the effect on the fluorescent powder due to the heat of the luminescent device when the backlight module emits light can be lowered, so as to ensure the service life of the backlight module. The fluorescent powder layer is evenly coated on the second substrate; each point on the fluorescent powder layer can be bombarded by electrons from an array of the luminescent device and photons generated by holes in the compound process to emit light; the uniformity of the luminous surface is improved to the greatest extent; the light emitted by the luminescent device is evenly emergent through the fluorescent powder layer, thus the arrangement of a light guide plate and an optical diffusion sheet in the prior art can be omitted; the thickness of the backlight module is lowered; the structure of the backlight module is simplified.

The invention relates to a ball screw transmission device and belongs to the technical field of machines. The ball screw transmission device comprises a screw and a transmission assembly. The transmission assembly comprises a nut sleeve and a holder. The inner surface of the nut sleeve is machined to be a smooth surface. A through hole is formed in the holder. After the holder is unfolded, the corresponding through hole center distance is an integral multiple of a screw pitch. The smooth surface of the nut sleeve is connected with the upper surface of the holder and then fixed, a steel ball is arranged in the through hole, the through hole and a roller path of the screw are identical in position in a circulatory mode and then the transmission assembly is formed. A transmission gear is arranged on the transmission assembly. The screw penetrates through the holder and is connected with the steel ball through a roller path on the screw. By the adoption of the ball screw transmission device, switching between rotation motion and linear motion of the transmission assembly and the screw can be achieved, friction force is small, the transmission efficiency is high, noise is low, the service life is prolonged, cost is reduced, the applicability is high, labor is greatly liberated, and production efficiency is improved.

The invention relates to a field patching method after damage of a zinc coating of an in-service power transmission tower. The field patching method comprises the following steps of: (1) surface polishing treatment of using an angle grinder to oxidize a surface of angle steel which damages the zinc coating and removing a corrosive layer, rusty spots and oxidized spots to expose metallic luster of a metal material; (2) surface refining treatment of using an abrader to grind the surface gradually with abrasive paper from coarse to fin until the surface is like a mirror surface; (3) surface cleaning and drying of cleaning the surface by using a cotton ball containing absolute ethyl alcohol to remove sand particles and dust on the surface, then using acetone to wipe the surface, and removing oil grease to enable the surface to be dried rapidly; (4) spraying Subaru cold galvanized coating until a thickness of a film is up to 80-100 microns; and (5) finishing drying. As the method is used for dealing with the damaged zinc coating, good film-forming effects of the Subaru cold galvanized coating, strong adhesive force and no aging and fracturing phenomenon are achieved, and an original service life of a lightning rod tower is kept.

An electronic device connected with external equipment through a transmission line to transmit data and receive power comprises a data processing unit for transmitting data with the external equipment through the transmission line; a charging circuit for charging a battery by using power received through the transmission line; and a charging selection unit for generating a charge instruction according to user input, wherein the charging circuit starts to charge the battery by using the received power based on the charge instruction. In the electronic device and the charging method thereof, the charge operation of the battery is started by the user's operation, thereby achieving charge in the case of insufficient voltage, obviating frequent charging operation during each data transmission, and ensuring the service life of the battery. The invention also provides the electronic device charging method.

The invention discloses a steel-composite material wind-driven generator tower cylinder, which comprises an internal steel pipe and an external composite material pipe, a plurality of conical steel pipe sections are connected to form the internal steel pipe, and the external composite material pipe comprises a plurality of glass fiber composite material pipe sections; corrosion-resistant E-glass fiber cloth is stuck on the surface of each internal steel pipe, so that the steel-composite material combination section is formed; the steel-composite material combination section is circumferentially divided into two pieces; longitudinal reinforcing ribs are arranged along the longitudinal direction of each piece; each two pieces of steel-composite material combination sections are connected together by adopting high-strength bolts, so that a steel-composite material tower cylinder section is formed in the end; and each two steel-composite material tower cylinder sections are connected together through flanges, so that the steel-composite material tower cylinder for on-site installation is formed. Compared with conventional steel wind-driven generator tower cylinders, the steel-composite material wind-driven generator tower cylinder can effectively resist the hit of wind-blown sand and stormy waves, fatigue and corrosion, so that the life of the tower cylinder can be guaranteed.