建筑支撑架

洗地机器人基站

建筑幕墙

洗地机器人

建筑石柱

包装盒（柿子）

Suitcase without idler wheels

... 种无滚轮的行李箱，属于旅行装备技术领域，包括拉杆、拉手、伸缩按钮、伸缩外杆、伸缩內杆、拉杆滚轴、圆柱箱体、箱底、箱底脚、拉杆轨道、箱盖、箱盖把手、密码锁、箱体边缘、锁环槽、锁扣开关、活动链接扣、右锁扣、左锁扣、锁扣固定台、箱口、锁扣出口、弹性网带组成；行李箱没有滚轮，箱体全身采用铝基复合材料，强度大，整体气密性好能够防水，拉杆可以伸缩调整，采用密码锁，安全性能强；弹性网带保证行李不在使用过程中在箱中翻滚；本发明结构简单，箱体强度高，防水性好，安全性能强，使用寿命长。 ...

DISPLAY DEVICE AND BRIGHTNESS ADJUSTMENT METHOD THEREOF

Provided are a display device and a brightness adjustment method thereof. The display device comprises a backlight module (10), a display panel (20), a first backlight driver (31), and a second backlight driver (32). The first backlight driver (31) is coupled to a PWM signal generator and configured to drive a backlight source (101) to emit light by the PWM signal output by the PWM signal generator, so that the brightness of the display panel (20) is within a first brightness range. The second backlight driver (32) is coupled to the PWM signal generator and configured to drive the backlight source (101) to emit light by the PWM signal output by the PWM signal generator, so that the brightness of the display panel (20) is within a second brightness range.

METHOD FOR PRODUCING ELECTRICAL STEEL SURFACE SUPER-THICK INSULATING COATING

A method for producing electrical steel surface super-thick insulating coating comprises the following steps: 1) coating solution preparation, comprising fully stirring a coating solution, the duration of the stirring being 0.1-4 hours, and the viscosity of the coating solution being within 10-80S; 2) strip steel coating, comprising using a two-roller or three-roller coating machine, and controlling the coating thickness and uniformity by adjusting different parameters; 3) coating baking, comprising using three-stage heating to bake the coating to form a film, the three stages being a drying stage, a baking stage and a cooling stage, the temperature during the drying stage being 100-400 °C, the temperate during the baking stage being 200-370°C; the whole duration of the drying stage and the baking stage being 33-144 seconds, the wet film drying duration being 9-39 seconds, the baking duration being 24-105 seconds; for the coated strip steel in the coating baking stage, the strip steel being ...

HANDHELD VACUUM CLEANER

Disclosed is a handheld vacuum cleaner (T), comprising a dust cup assembly (T1), a suction nozzle assembly (T2), and a handle assembly (T3). The dust cup assembly (T1) comprises a cup housing (1), and an airflow generation device (2) and a cyclone separation device (3) arranged inside the cup housing (1). The suction nozzle assembly (T2) is mounted on the cup housing (1) and defines an air-suction passage (S1). The handle assembly (T3) is mounted on the cup housing (1) and is used for holding. The handle assembly (T3) comprises a handgrip (4) used for assembling with the cup housing (1), and a power source (5) coupled with the handgrip (4) and used for supplying power to the airflow generation device (2). In the handheld vacuum cleaner (T), a heat-dissipating air passage (S2) is provided for guiding an airflow from the outside of the handheld vacuum cleaner (T) or the inside of the cup housing (1) to the power source (5).

ANAEROBIC CATALYTIC THERMAL CRACKING METHOD FOR SOLID WASTE

An anaerobic catalytic thermal cracking method for solid waste, the steps thereof comprising: waste pre-treatment: putting transported waste into a garbage pool and removing waste water, then implementing in turn coarse breaking, dehydration, and crushing into waste pellets of less than 3 cm; heating the waste pellets using surplus heat and renewable combustible gas and/or external heating; and drying to reduce the water content of the waste particles to 10-30% to obtain dry waste particles. Waste cracking and decomposition: placing the dry waste pellets into a fluidised cracking furnace, and in anaerobic conditions, heating the fluidised cracking furnace using surplus heat and renewable combustible gas and/or external heating, such that the cracking temperature and heating rate meet requirements, and adding a catalyst, such that the organic matter in the dry waste pellets is decomposed into inorganic matter, combustible gas, biochar, and liquid compounds. Post-cracking and post-decomposition ...

Deformable airplane

The invention provides a deformable aircraft, and relates to the technical field of aviation, the deformable aircraft comprises an aircraft body and a tilting frame, the tilting frame is provided with a tension assembly, and the tilting frame is hinged to the aircraft body; an air power assembly is arranged on the machine body and/or the tilting frame; a deformation driving assembly is arranged on the tilting frame and can make the tilting frame tilt relative to the aircraft body, and the tilting angle is larger than or equal to 90 degrees so as to control the flight attitude of the transformable aircraft. The tilting frame has the beneficial effects that the tension assembly is arranged on the tilting frame, and during vertical lifting, wind force formed by the tension assembly is blown downwards, so that lifting force is formed; when the deformable aircraft is in the air, the deformable driving assembly controls the tilting frame to tilt relative to the aircraft body so as to control ...

BIFUNCTIONAL GRAPHENE OXIDE CATALYST, PREPARATION METHOD THEREFOR AND USE THEREOF

Disclosed are a bifunctional graphene oxide catalyst, a preparation method therefor and the use thereof. The preparation method comprises: step I. sulfonating graphene oxide by adding an organic acid to obtain monofunctional graphene oxide with an acid active center; and step II. in situ immobilizing noble metal nanoparticles on carbon nanosheets of the sulfonated graphene oxide. The method is simpler and more convenient than existing bifunctional catalyst synthesis methods. The bifunctional graphene oxide catalyst, which is provided with double catalytic active centers (an acid active center and a noble metal active center), can provide an appropriate acidity and a high-efficiency redox site. In addition to being applied to a reaction for the catalytic conversion of fructose into 2,5-diformylfuran in one pot, the catalyst can also be applied to an etherification-oxidation reaction, a transesterification-hydrogenation reaction and a dehydration-hydrogenation reaction. By regulating and ...

ULTRAVIOLET DETECTOR PROVIDED WITH GAN NANOWIRE ARRAY, AND MANUFACTURING METHOD THEREFOR

Provided are an ultraviolet detector provided with a GaN nanowire array, and a manufacturing method therefor. The detector comprises a substrate (1) and a P-type GaN thin film layer (2), the P-type GaN thin film layer (2) being arranged on the upper surface of the substrate (1), an N-type GaN nanowire array being grown on the P-type GaN thin film layer (2), and a homogeneous PN junction being formed between the N-type GaN nanowires (7) in the N-type GaN nanowire array and the P-type GaN thin film layer (2). The method comprises implementing nanowire gap filling insulation by means of spin-coating glass liquid (4), and implementing electric injection; implementing nanowire array interconnection by means of vapour deposition of a transparent conductive layer (5) to expand the current; and disposing a P-type ohmic electrode (3) on the P-type GaN thin film layer (2) and disposing an N-type ohmic electrode (6) on the transparent conductive layer (5) to thereby make the nanowire array ultraviolet ...

Distilled water kettle

The utility model relates to the technical field of thermos, in particular to a distilled water thermos which comprises a thermos body, a condensation cover and a base. The kettle body, the condensation cover and the base are arranged in a split mode. And a spout and an anti-scald pot handle are respectively arranged on two sides of the pot body. An outer container and an inner container are arranged in the kettle body, and an inner container opening is formed in the inner container. The condensation cover comprises a condensation plate and a cover handle. The vertical projection area of the condensation plate is larger than that of the inner container, and the condensation plate corresponds to the opening of the inner container. The inner container is used for heating water and generating steam. The outer container is mainly used for storing distilled water. The condensation cover is used for condensing steam into distilled water. A cavity is formed in the condensation cover and used for ...

Gate-free ion migration tube with transverse stacking structure

The invention discloses a gate-free ion migration tube with a transverse stacking structure, which comprises a first shielding electrode plate and a second shielding electrode plate which are oppositely arranged along the vertical direction, and a plurality of layers of migration electrode plates are arranged between the first shielding electrode plate and the second shielding electrode plate; and electrode strips are arranged on the upper surface and the lower surface of the migration electrode plate. According to the invention, the overall number of the stacking units is reduced, and the assembly difficulty is reduced; the structure of the entity ion gate is omitted, so that the assembly difficulty of the migration tube is simplified, the migration distance can be adjusted under the condition that the overall structure of the migration tube is not changed, the function that the migration distance is adaptively changed according to application scenes can be achieved, and higher full-spectrum ...

2N+1-axis aircraft

The invention provides a 2N + 1-axis aircraft, which relates to the technical field of spaceflight, and comprises a fuselage, an even number of middle rotors and 2N small rotors, a main shaft is arranged on the fuselage, and the even number of middle rotors are coaxially arranged on the main shaft; and the 2N small rotors are connected to the fuselage and are regularly distributed around the main shaft. The aircraft has the beneficial effects that the aircraft comprises the aircraft body, the even number of middle rotor wings and the 2N small rotor wings, the rotation of the middle rotor wings and the small rotor wings provides lift force, and the even number of middle rotor wings are coaxially arranged on the main shaft, so that the length size of the middle rotor wings can be properly lengthened, and the lift force generated when the middle rotor wings rotate is stronger; the stability is better, and the wind resistance is good; the main shaft is provided with the autorotation rotor wing ...

Chaotic laser ranging device and ranging method based on Kerr optical frequency comb

The invention discloses a chaos laser ranging device and ranging method based on a Kerr optical frequency comb, and the method comprises the steps: a Kerr optical frequency comb generation module transmits pump light to a nonlinear micro-ring resonant cavity, and generates a chaos Kerr optical frequency comb; the Kerr optical frequency comb transmit-receive module divides a chaos Kerr optical frequency comb into two paths of optical frequency comb signals with different powers through a beam splitter, amplifies one path of optical frequency comb signal with high power through a transmitting module, and transmits the amplified optical frequency comb signal to a horizontal direction of a target object through a signal transmitting unit. Receiving an echo optical signal reflected by the target object through an echo signal receiving end, performing photoelectric conversion to obtain an echo electric signal, attenuating the other path of optical frequency comb signal through a reference signal ...

SETTING METHOD AND DEVICE FOR SERVICE FORWARDING TABLE

A setting method and device for a service forwarding table. The setting method comprises: acquiring service forwarding information and TE tunnel information about a network; writing the service forwarding information into the service forwarding table, and setting a label and an index for a main TE tunnel carrying services in the service forwarding table; according to tunnel group information about the main TE tunnel in the TE tunnel information, determining a label switching path (LSP) of the TE tunnel capable of carrying the current service; writing a next jump outlet and an outlet label of the LSP of the TE tunnel into a tunnel information table of the main TE tunnel provided with the index.

Take linear electric motor's annular flat plate blade marine propulsion means

... 种带直线电机的环形平板叶片船舶推进装置，属船舶技术领域，包括主轴、转盘、环形平板叶片、牵引杆、定位杆和外壳。外壳包括左侧板、底板和右侧板。定位杆竖直安装于外壳的底板上靠近左侧板处。环形平板叶片套装在定位杆上，环形平板叶片与外壳的底板垂直。转盘水平布置于平板形叶片的上方，转盘上安装有直线电机。直线电机包括定子和动子。牵引杆的上端安装在动子上，牵引杆竖直布置，牵引杆的下段插入环形平板叶片中。主轴安装在转盘的中心，主轴竖直布置于转盘的上方，并通过轴承安装在支架上。动力驱动转盘转动和直线电机运动带动平板形叶片在外壳内作半周运动，能产生类似昆虫的“急张”和“相扑”运动效果和镜面效果，效率较高。 ...

Pipeline leakage aperture identification method based on improved LCD

The invention relates to the technical field of pipeline leakage, in particular to a pipeline leakage aperture identification method based on an improved LCD (Liquid Crystal Display), which comprises the following steps: collecting pipeline infrasonic wave leakage signal data under different leakage apertures; constructing a difference equation by using prony to calculate a matching coefficient, and performing LCD decomposition on the extension signal to obtain a plurality of ISC components; effective components and invalid components are distinguished through mutual information entropy of adjacent ISC components, and signal reconstruction is carried out; analyzing the reconstructed signal, and extracting dominant characteristic parameters representing the leakage aperture; constructing a pipeline leakage feature vector by using the dominant feature parameters; and calculating the distance between the reconstructed signal leakage feature vector and the to-be-detected leakage signal feature ...

Emergency generator for outdoor engineering

The invention provides an emergency generator for outdoor engineering. The emergency generator comprises a shell, a lifting assembly and an air inlet assembly. According to the emergency generator for outdoor engineering, through cooperation of the lifting assembly and the gradienter, the engine is always kept horizontal on the uneven ground; through cooperation of a wind direction sensor and an electric baffle, the probability that rainwater enters the shell is reduced while the generator sucks air in a rainy environment; the problems that fuel oil leaks when the generator works on the uneven ground and the waterproof shell is overheated when the generator is used in rainy days are solved, the safety in the using process is improved, and the service life of the generator is prolonged.

Physical development tree construction method and system based on deep learning and cluster search

The invention discloses a phylogenetic tree construction method and system based on deep learning and cluster search, and the method comprises the steps: predefining modeling scenes, and setting the evolution parameters of each scene with reference to the biological sequence attributes of a real world, a training set, a verification set and a test set are made according to a preset parameter simulation phylogenetic tree and corresponding multi-sequence comparison data; constructing a deep learning classifier taking the convolutional neural network and the long-short-term memory neural network as the core, training and verifying the deep learning classifier by using the training set and the verification set, and testing the accuracy of the deep learning classifier by using the test set; performing classification prediction on all sub-four-sequence trees of the four-sequence data based on the trained deep learning classifier and a sliding window method; and performing phylogenetic tree reconstruction ...

METHOD FOR ON-LINE MEASURING NON-CHROMIC COATING THICKNESS ON STEEL STRIP SURFACE

A method for on-line measuring non-chromic coating thickness on steel strip surface includes the following steps: selecting two water soluble compounds which contain element P, Ca, Ti, Ba or Sr and which are not reactive with the non-chromic coating liquid; adding the two compounds to the liquid to make a standard sample sheet after stirring evenly the liquid; using an off-line film thickness meter to excite the two compounds by ray to get characteristic spectrum; fitting correction function of the measured thickness and the thickness correction value after numerous experiments, wherein the thickness correction value is difference between the measured thickness which is gotten from the compound with weak characteristic spectrum and the actual thickness which is measured from the compound with strong characteristic spectrum; adding the compound with weak characteristic spectrum to the liquid to get the measured thickness, and to compute the actual thickness by the correction function.

Pouring pipeline system for rolling mill stand and use method of pouring pipeline system

The invention relates to the technical field of pouring of rolling mill stands, and provides a pouring pipeline system for a rolling mill stand and a using method of the pouring pipeline system. The using method comprises the steps that a first pouring pipe section is solidified in a first hard sand layer; placing a model of the rolling mill stand on the first hard sand layer; a second pouring pipe section is placed in the set space; the second pouring pipe section and the model of the rolling mill stand are solidified in a second hard sand layer on the first hard sand layer; the model of the rolling mill stand is taken out from the taking-out part of the surface of the second hard sand layer; a prefabricated sand core is used for sealing and covering the taking-out part; and molten steel is poured into the inlet end of the first pouring pipe section. The purpose of reducing the casting cost of the rolling mill stand is achieved by greatly reducing the use amount of pouring pipelines and ...

HANDHELD VACUUM CLEANER

A handheld vacuum cleaner (T), comprising a dust cup assembly (T1), a suction nozzle assembly (T2), and a handle assembly (T3). The dust cup assembly (T1) comprises a cup housing (1) and an airflow generation device (2) and a cyclone separation device (3) disposed in the cup housing (1). The airflow generation device (2) is disposed on the cyclone separation device (3) and located at a downstream side of the cyclone separation device (3). An air vent (140) is formed in the top of the cup housing (1). The suction nozzle assembly (T2) is mounted on the cup housing (1) and defines an air suction channel (S1). The handle assembly (T3) is mounted on the cup housing (1) and used for holding. By means of the structure, an airflow direction of the air vent (140) is not towards a surface to be cleaned, so as to prevent the air vent (140) from blowing dust on the surface to be cleaned about, and ensure the cleaning effect.

METHOD AND DEVICE FOR CONTROLLING FURNACE TEMPERATURE OF BURNING HEATING FURNACE

A method for controlling furnace temperature of a burning heating furnace includes: monitoring the furnace temperature to attain a feedback value of the furnace temperature; calculating a difference value between the setting value and the feedback value of the furnace temperature as a deviation value DV1; calculating a difference value between the setting value and the feedback value of the furnace temperature in a unit time, i.e. a slope of the variation value of the furnace temperature, as a deviation value DV2; attaining a speed V of the burning heating furnace unit from a speed regulator, and based on that, attaining a first multiple feed-forward output component FFV; attaining a second multiple feed-forward output component FFT according to the deviation value DV1; according to the deviation value DV1 and DV2, searching the PID control parameter based on the fuzzy control rule, and generating an adjusting control parameter OP1 according to the PID control parameter; combining the adjusting ...

Pulse electroplating process and combined liquid

The invention discloses a pulse electroplating process and a combined liquid, and relates to the technical field of electroplating processing, and the pulse electroplating process comprises the following steps: step S01, pretreatment of an electroplating base material; s02, preparing an electroplating combined liquid: connecting a pulse power supply with an electroplating bath to form an electroplating system, and preparing the electroplating combined liquid; s03, parameter setting: evaluating the stability of the pulse power supply and presetting evaluation parameters, and then setting electroplating pulse process parameters; s04, pulse electroplating is conducted under the ultrasonic condition, a nickel plate with the purity being 99% serves as an anode, the pretreated electroplating base material serves as a cathode, the nickel plate and the pretreated electroplating base material are placed in the electroplating combination liquid A to be subjected to pulse electroplating, a prefabricated ...

File naming method based on NLP

The invention discloses a file naming method based on NLP, and belongs to the technical field of CAD file naming. The file naming method comprises the steps that 1, a material adding column is set, and naming materials needing file naming are obtained; step 2, establishing a corresponding identification model based on an NLP algorithm; 3, displaying the CAD files in the named materials in a one-by-one butt joint mode through a material adding column, and recognizing graph names in the displayed named materials based on a recognition model to obtain recognized graph names; 4, drawing up a file name according to the identified graph name, and endowing the drawn-up file name to the corresponding CAD file; by setting the material adding column, batch naming of the CAD drawings is achieved, a user does not need to add the CAD drawings needing to be named one by one, corresponding application functions are not needed to be set for the material adding column, mutual cooperation with various existing ...

COMMON VOLTAGE CONTROL CIRCUIT AND METHOD, DISPLAY PANEL AND DISPLAY APPARATUS

Disclosed are a common voltage control circuit (1) and method, a display panel and a display apparatus. The common voltage control circuit (1) comprises: a temperature-sensing circuit (2) and a voltage regulation circuit (3), wherein the temperature-sensing circuit (2) is configured to sense the ambient temperature; and the voltage regulation circuit (3) is coupled to the temperature-sensing circuit (2) and a common electrode (5), and is configured to provide a corresponding common voltage to the common electrode (5) according to a temperature signal from the temperature-sensing circuit (2). A common voltage can be changed according to the ambient temperature so as to ameliorate the problem of image sticking.

双阀滤池智能化控制水处理系统

... 本发明是双阀滤池智能化控制水处理系统。是由电动与/或气动阀门和虹吸系统组成控制系统管廊，利用滤池的水头损失和运行时间的运行参数来实现双阀滤池智能化控制水处理系统。滤池单元上部设置U形进水虹吸管路和排水虹吸管路，在进水虹吸管路和排水虹吸管路的上部设置触点电极以及并联设置抽真空气动阀和破坏真空气动阀。高低压真空容器的真空按程序形成后，即可使进水虹吸、排水虹吸完成实现滤池的进水和排水的自动控制。无需采用人工手动操作，尤其是大型水厂可分成多个单元滤池的净水厂，既能保证水质安全又无须耗费大量的人力和物力，可广泛的应用双阀滤池。各项指标均符合《室外集水设计规范》GBJ13-86中各项规定指标的要求。 ...

Early warning protection device and method for external force damage of buried cable in square construction area

The invention relates to the technical field of power grid power construction equipment, in particular to a square construction area buried cable external force damage early warning protection device and method.The device comprises a first advancing mechanism used for moving left and right, a second advancing mechanism used for moving front and back and a control device; the first travelling mechanism and the second travelling mechanism can respectively control the device to move left and right or front and back under the control of a lifting motor; a first magnetic field detection sensor and a second magnetic field detection sensor are installed below the first advancing mechanism and the second advancing mechanism respectively, magnetic field intensity values are periodically collected in the moving process of the device, automatic detection of the magnetic field intensity is achieved through movement of the device in a construction area, and then a buried cable distribution path curve ...

Inductor and power control device

The invention provides an inductor and a power control device. The inductor comprises a coil and a magnetic core wrapping the coil. The coil comprises a wire and a composite insulating layer wrapping the wire. The composite insulating layer at least comprises a first insulating layer and a second insulating layer. The first insulating layer wraps the surface of the wire, and the second insulating layer wraps the surface of the first insulating layer. The first insulating layer and the second insulating layer are different in material or structure. According to the inductor, the composite insulating layer wrapping the wire is arranged in the coil, and the composite insulating layer at least comprises two insulating layers, so that the insulating performance between the wire in the coil and the magnetic powder in the magnetic core can be improved, the pressure resistance of the inductor is improved, and the reliability of the inductor is improved.

Model training method and device, storage medium and electronic equipment

The invention discloses a model training method and device, a storage medium and electronic equipment. The method comprises the following steps: acquiring a first target detection algorithm model, and first sizes and a preset threshold value of a defect part of a first printed circuit board in a historical period, and determining a difference value between a minimum value in the clustered first sizes and the preset threshold value; under the condition that the difference value is smaller than zero, a second number of second prediction modules are additionally arranged on a YOLO layer in the first target detection algorithm model to obtain a second target detection algorithm model; and acquiring a plurality of labeled second printed circuit board images, and performing model training and testing on the second target detection algorithm model based on the plurality of second printed circuit board images to obtain a third target detection algorithm model. According to the method and the device ...

Closed -loop type manpower circulating water system

... 一种闭环式人力流动水系统，属流体力学技术领域，包括环形水槽，以及一个或多个划水装置。环形水槽是闭环式的，环形水槽中的水在划水装置的作用下能循环流动。划水装置采用手摇的方式驱动。划水装置包括第一摇柄、第二摇柄、平板叶片、导向框、顶板和底板。顶板和底板都水平布置，顶板和底板安装在环形水槽的外墙上。导向框竖向布置。平板叶片在导向框的长条形方孔中穿过。第一摇柄和第二摇柄分别安装在平板叶片的两端的顶部。在动力的驱动下，平板叶片作半圆周运动向后划水，划水效率很高。所述闭环式人力流动水系统用来养鱼虾，或用于科学实验及科普教育，也可安装于公园供人们体验人工小溪的乐趣。 ...

Image detection method and device and computer readable storage medium

The embodiment of the invention provides an image detection method and device and a computer readable storage medium. The image detection method according to the embodiment of the invention comprises the following steps: acquiring two images to be detected, and acquiring feature maps to be detected respectively corresponding to the two images to be detected; performing clustering processing on each to-be-detected feature map by using a plurality of clustering modules, obtaining a channel weight of each clustering module, obtaining feature vectors according to the channel weights, and forming a feature vector group by using the feature vectors of each clustering module; obtaining feature vector pairs formed by feature vectors of the same clustering module in two feature vector groups corresponding to the two to-be-detected feature maps respectively, and obtaining the weight of each feature vector pair; and performing image detection on the two to-be-detected images at least according to ...

VACUUM CLEANER AND DUST CUP ASSEMBLY THEREOF

Disclosed are a vacuum cleaner and a dust cup assembly (T1) thereof. The dust cup assembly (T1) comprises a cup housing (1), and an airflow generation device (2) and a cyclone separation device (3) arranged inside the cup housing (1), wherein an upstream filtering device (61) is arranged at an upstream side of the airflow generation device (2), and a downstream filtering device (62) is arranged at a downstream side of the airflow generation device (2).

Image processing method and device and storage medium

The invention discloses an image processing method capable of being used for prolonging line segments in an image. The method comprises the following steps: acquiring a target image containing defect features; identifying at least one line segment from the target image; at least one line segment is subjected to extension processing, and the extension processing for a specific line segment in the at least one line segment comprises the steps that the extension direction used for extending the specific line segment is determined based on the main direction and the tangential direction of the specific line segment; determining an extension length for extending the specific line segment based on the length of the specific line segment; and using the extension direction and the extension length to extend the specific line segment to obtain an extended line segment, the extended line segment being related to defect features in the target image.

Automobile B column FPC automatic bending device

The invention relates to the technical field of automobile B column automatic production, in particular to an automobile B column FPC automatic bending device which comprises a positioning mechanism, a pressure resisting mechanism and a bending mechanism, the positioning mechanism comprises a jig and a side positioning assembly, and the pressure resisting mechanism comprises a pressure resisting head and a first driving assembly. The bending mechanism comprises a second driving assembly, a lifting head, an X-direction linear driving pair and a bending assembly. According to the device, the position of an automobile B column can be fixed through the cooperation of the jig, the side positioning assembly and the pressure resisting mechanism, the FPC can be bent through the cooperation of the lifting head and the bending assembly, in this way, manual work is replaced by a machine to bend the automobile B column FPC, it is guaranteed that the bending degree and the bending position of each time ...

Refined ginseng extract and preparation method thereof

The invention provides a preparation method of a refined ginseng extract, and belongs to the technical field of plant pesticide residue removal. The method comprises the following steps: mixing water, a flocculant and a ginseng crude extract, performing flocculation treatment, and collecting a liquid material after solid-liquid separation; loading the liquid material on a macroporous adsorption resin column, then eluting with an alkali solution, water, an acid solution, water and a first ethanol aqueous solution in sequence, and collecting a first ethanol aqueous solution eluent; diluting the first ethanol aqueous solution eluent with water, loading the obtained diluent on a pesticide residue adsorption resin column, collecting column loading effluent, then eluting with a second ethanol aqueous solution, and collecting a second ethanol aqueous solution eluent; and mixing the upper column effluent and the second ethanol aqueous solution eluent, and sequentially concentrating and drying to ...

Electromagnetic equipment efficiency and site selection evaluation method and device and electronic equipment

The invention provides an electromagnetic equipment efficiency and site selection evaluation method and apparatus, and electronic equipment. The method comprises the steps of obtaining a site selection analysis area range and an electromagnetic equipment data chain table; performing efficiency networking evaluation on each established electromagnetic device based on the device data to obtain an efficiency networking evaluation result; determining an electromagnetic uncovered area from the site selection analysis range according to the efficiency networking evaluation result so as to determine pre-site selection point information of the to-be-constructed electromagnetic equipment from the electromagnetic uncovered area; and performing site selection feasibility evaluation on the to-be-established electromagnetic equipment according to the efficiency networking evaluation result and the pre-site selection site information to obtain a site selection feasibility evaluation result. According ...

铜回收的方法

A process for recovering copper from the gel (mud) containing Cu includes such steps as adding the treating agent and/or treating aid, separating out high-molecular coagulant to obtain Cu-contained aqueous solution and oxidizing gas, adding the transforming agent and assistant to said aqueous solution, reaction, solid-liquid separation to obtain copper oxide and another oxidizing gas, and using the separate liquid to saturated said two kinds of oxidizing gas to become strong oxidant. Its advantage is no generation of pollutant.

Method for importing far-field data of HFSS software into CST/FEKO software

The invention discloses a method for importing far-field data of HFSS software into CST/FEKO software, and belongs to the technical field of electromagnetic simulation. The method comprises the following steps: firstly, acquiring a far-field data file corresponding to a simulation project in HFSS software; converting the obtained far-field data file of the HFSS software into an intermediate data format; and then converting the intermediate format data into a far field data file conforming to a CST/FEKO software format. The method is simple, practical and easy to implement, the far-field simulation result obtained by the HFSS software can be imported into the CST/FEKO software, and therefore subsequent simulation work is completed, and great convenience is provided for electromagnetic simulation work.

Method for expanding image feature samples and constructing neural network

The invention provides a method for expanding image feature samples and a method for constructing a neural network for image processing. The method for expanding the image feature samples comprises the following steps: determining a plurality of corresponding auxiliary images for a plurality of target images, and extracting a plurality of target feature samples and a plurality of corresponding auxiliary feature samples from the auxiliary images; for a given auxiliary feature sample, selecting a target feature sample corresponding to the given auxiliary feature sample to form a positive sample pair; based on the similarity between the corresponding auxiliary feature sample of each candidate target feature sample and the given auxiliary feature sample, the target feature samples are selected to form a plurality of negative sample pairs, and the sample pairs are used for training a neural network used for extracting image features. According to the method for expanding the image feature sample ...

Preparation method of high-remanence sintered Sm2Co17 permanent magnet

The invention relates to a preparation method of a high-remanence sintered Sm2Co17 permanent magnet, belongs to the technical field of magnetic material preparation, and solves the technical problems that a single 1: 7H phase is difficult to form during solid solution of the high-Fe-content Sm2Co17 permanent magnet, and the integrity of a cellular organization structure of the magnet is poorer. The preparation method comprises the following steps: S1, preparing samarium-cobalt alloy particles; s2, preparing samarium-cobalt alloy powder; s3, magnetic field orientation forming and cold isostatic pressing are carried out; and S4, sintering solid solution and aging treatment are conducted, and the samarium-cobalt cylindrical magnet with the diameter being 5-8 mm is prepared. Wherein the auxiliary material B and the auxiliary material C are added in the step S2 and are fully mixed. According to the method, the sintering temperature of the samarium-cobalt magnet can be effectively reduced, the ...

Control method and system of autonomous operation equipment, autonomous operation equipment and medium

The embodiment of the invention discloses a control method and system of autonomous operation equipment, the autonomous operation equipment and a medium. The control method of the autonomous operation equipment comprises the steps of obtaining motion data of a target object, obtaining position information of the target object according to the motion data of the target object, and generating safety state information of the target object according to the position information of the target object. According to the technical scheme provided by the embodiment of the invention, the motion state of the autonomous operation equipment is monitored, the motion data is detected according to the motion data when the autonomous operation equipment does not need to move, the position information of the target object is acquired, and the safety state information of the target object is generated according to the position information of the target object. According to the safety state data of the target ...

Multi -functional rechargeable dc -to -ac converter

... 本实用新型公开了种多功能充电式逆变器，其特征在于，包括：DC变换充电识别模块，与所述DC变换充电识别模块连接的USB输出端和输入端，所述输入端连接有电源逆变器和第输出端，所述电源逆变器还连接有第二输出端；其中，所述电源逆变器内设置有报警电路、逆变电路和保护电路。本实用新型将输入DC9～36V电压直接输出成DC9～36V电压供点烟器设备使用，同时通过逆变器原理将输入DC9～36V电压转变为输出AC220V电压，供充电使用，同时增加DC变换充电识别模块连接USB输出端，因此形成了种集充电器、点烟器、逆变器为体的多功能充电式逆变器，具有安全性高、体积小、成本低廉的特点。 ...

Testing device and method for testing anti-seismic property of back-wall grouting layer

The invention relates to the technical field of shield tunnel synchronous grouting, in particular to a testing device and method for testing the anti-seismic property of a backwall grouting layer. The test device comprises a test model, an earthquake load loading system and a monitoring system, the test model comprises a grouting layer model and a tunnel model; the seismic load loading system comprises a counter-force ring and hydraulic oil cylinders, the test model is arranged on the inner side of the counter-force ring, one end of each hydraulic oil cylinder is installed on the inner wall of the counter-force ring, the other end of each hydraulic oil cylinder abuts against the outer wall of the test model, multiple rows of hydraulic oil cylinders are arranged in the axial direction of the counter-force ring, and each row comprises multiple hydraulic oil cylinders; and the counter-force rings are arranged in a circumferential array. The anti-seismic performance of different types of backfill ...

Phase change material-based power beam splitter, design method and image recognizer

The invention belongs to the field of optical devices, and particularly relates to a phase-change material-based power beam splitter, a design method and an image recognizer, the phase-change material-based power beam splitter comprises an input waveguide, a coupling area and two output waveguides which are connected in sequence, the coupling area comprises a phase-change material array area and an optimization area, the two output waveguides are correspondingly connected with the phase change material array area and the optimization area respectively; the optimization area is divided into a plurality of units, each unit has two states, and the state of each unit is determined according to a direct binary search algorithm; according to the invention, the size of the device is obviously reduced, the loss and crosstalk are reduced, and high-precision and wide power distribution is realized.

High-binding-force and low-internal-stress chemical copper plating solution suitable for special substrate

The invention discloses a high-binding-force and low-internal-stress chemical copper plating solution suitable for a special substrate, and the chemical copper plating solution is prepared by the following steps: stirring and dissolving 20g/L of first complexing agent potassium ammonium tartrate and 35g/L of second complexing agent ethylenediamine tetraacetic acid in deionized water according to the proportion, adding 5-12g/L of copper salt while stirring, and stirring for 30-60min; the pH value is adjusted to 11.5-13 after dissolving, the temperature is slowly increased to 50 DEG C, a stabilizer potassium ferrocyanide with the concentration of 4 mg/L and a surfactant polyethylene glycol with the concentration of 50 mg/L are added for stirring and dissolving, a reducing agent glyoxylic acid with the concentration of 3 g/L and a curing agent flexible epoxy resin with the concentration of 1 g/L are added for uniform stirring, and the chemical copper plating solution is obtained.

Ultramicro-bubble large-flux water purification system for cabinet and water purifier thereof

The ultramicro-bubble large-flux water purification system for the cabinet and the water purifier of the ultramicro-bubble large-flux water purification system are used for preparing ultramicro-bubble bubble water and purified water and comprise a tap water source, an air inlet, a PCB composite filter element, an ejector, a self-priming pump and a faucet, and the tap water source is connected with the PCB composite filter element through a pipeline; the self-priming pump is connected with a reverse osmosis (RO) membrane filter element for performing reverse osmosis filtration on water through a water purification pipeline, and the self-priming pump is connected with a bubble generation module, a bubbler and a water faucet; when ultra-micro bubble water needs to be made, the self-priming pump works, the bubble generating module forms a water-gas mixing cavity through the flow limiting aperture and a Venturi tube in the jet device, and the ultra-micro bubble water is formed; moreover, pressure ...

Training method of physical information neural network model

The invention provides a training method of a physical information neural network model. The method comprises the following steps: for a sub-network which is used for performing prediction solution based on a partial differential equation in a physical information neural network model (PINNs: Physical Information Neural Networks), adding an artificial viscosity item in a loss function adopted in the training process of the sub-network; the artificial viscosity item is a multiplication coefficient item additionally increased by an even-order derivative item added by a correction equation compared with an original partial differential equation in the numerical calculation process, and the multiplication coefficient item is generated based on an entropy residual error r output by the physical information neural network model corresponding to the sub-network. According to the method, the precision and the solving stability which can be improved by adding an artificial viscosity item in a traditional ...

Artificial insemination device for waterfowl breeding

The invention discloses an artificial insemination device for waterfowl breeding, and relates to the technical field of waterfowl breeding, the artificial insemination device comprises a connecting frame, an adjusting mechanism, a fixing mechanism and an angle adjusting mechanism, and the fixing mechanism comprises a foot fixing assembly, a connecting sleeve, a connecting rod, an arc plate, a body fixing assembly and a neck fixing assembly. A waterfowl body is supported through an arc plate, the distance between foot fixing assemblies is adjusted through an adjusting mechanism, connecting sleeves are matched with connecting rods to limit the foot fixing assemblies, the foot fixing assemblies fix the feet of a waterfowl, the body fixing assembly fixes the body of the waterfowl, and the neck fixing assembly fixes the neck of the waterfowl. The angle of the adjusting mechanism is adjusted by the angle adjusting mechanism, so that the insemination angle of the waterfowls is adjusted, and the ...

Device for regulating and controlling pore channel structure of carbon microspheres by using supercritical carbon dioxide and preparation method

The invention discloses a device for regulating and controlling a carbon microsphere pore channel structure through supercritical carbon dioxide and a preparation method, and the device comprises a supercritical reactor which is used for injecting supercritical CO2 liquid to act with a microsphere precursor in the supercritical reactor; a carbonization furnace; and the cracking device is used for cracking the microsphere precursor processed by the supercritical reactor. According to the method, high permeability and diffusivity of supercritical CO2 are creatively utilized, so that the supercritical CO2 rapidly permeates into the carbon-containing microstructure, and the CO2 can be forced to rapidly expand and escape by further designing the pressure relief process of the supercritical reactor (mainly by controlling the pressure, temperature and pressure relief speed in the reactor); secondary regulation and control on the carbon-containing microstructure are realized; meanwhile, the super-strong ...

Staged reverse design method of Y-shaped branch optical power beam splitter

The invention discloses a staged reverse design method for a Y-shaped branch optical power beam splitter, and the method comprises the following steps: constructing a first initial structure on an SOI platform, and the first initial structure is composed of a conical waveguide and two S-shaped waveguides; performing iterative optimization on the tapered waveguide by using a shape adjoint optimization algorithm to obtain an optimized Y-shaped branch coupling region; a second initial structure is constructed, wherein the second initial structure is composed of the Y-shaped branch coupling area obtained through optimization in the step S2 and two inclined straight waveguides; performing iterative optimization on the two inclined straight waveguides by using a shape adjoint optimization algorithm to obtain an optimized bent waveguide; and S4, using a DBS algorithm to optimize the surrounding area of the bent waveguide optimized in the step S4, and setting surrounding pixel points. According ...

Composite vertical take-off and landing aerocar

The invention provides a composite vertical take-off and landing aerocar, and relates to the technical field of ground-air amphibious vehicles, the composite vertical take-off and landing aerocar comprises a car body, the car body is provided with a main shaft; at least two power rotor assemblies are coaxially arranged on the main shaft, and the steering direction of at least one power rotor assembly is different from that of the other power rotor assemblies; the power rotor wing assembly comprises a rotor wing head, the periphery of the rotor wing head is connected with fins, and the main shaft is perpendicular to the rotating plane of the fins; movable ailerons are arranged on the two sides of the vehicle body, and a rear pushing assembly is arranged at the tail of the vehicle body. The power rotor assemblies provide lift force, the multiple power rotor assemblies are different in rotating speed and can control the course, and the movable ailerons can control transverse rolling. The device ...

Rendering method, 3D picture control method, electronic equipment and computer readable storage medium

The invention provides a rendering method, a 3D picture control method, electronic equipment and a computer readable storage medium. The 3D display speed and effect can be improved. The rendering method comprises the steps of obtaining model information in a 3D engine; determining rendering information according to the model information; calling a graphic application program interface according to the rendering information; rendering the rendering information to a drawing canvas of a display interface by using the graphic application program interface and the 3D engine; the drawing canvas of the display interface is obtained by packaging the drawing canvas of the 3D engine in an embedded view component of the display interface on the same layer.

Radiator with cover brilliant industrial and mining lamp

... 本实用新型实施例公开了种覆晶工矿灯，所述覆晶工矿灯包括：光学透镜、氮化铝陶瓷支架、FR4线路和散热器，采用新设计理念制作的光源，散热器尺寸相比之前小，且散热器可承受的温度可达70度；覆晶工艺生产的LED光源因其是采用焊接固晶、又无需焊线而且共晶支架与散热器之间是通过回流焊接连接起来的，其抗振稳定性非常好；在芯片封装块的表面设计光学玻璃透镜不仅可保护芯片封装块使胶面不被污染，还能防止水分和空气的渗入，隔绝胶面与环境的直接接触，减缓胶面的老化，使产品的使用寿命得到极大提高。 ...

Non-volatile reconfigurable compact all-optical logic gate based on phase change material Sb2Se3

The invention discloses a nonvolatile reconfigurable compact all-optical logic gate based on a phase change material Sb2Se3, and belongs to the technical field of photon information devices. The all-optical logic gate structure is designed on an insulating substrate silicon wafer and comprises a first input waveguide A, an intermediate control waveguide C, a second input waveguide B, an intermediate design area and an output waveguide Y. The all-optical logic gate device disclosed by the invention has an ultra-small floor area of 2.4 mu m * 2.4 mu m, and the reconfigurable characteristic is realized by fusing the non-volatility of the phase change material; the four all-optical logic gates of NOT, OR, AND and XOR are realized on an insulating substrate silicon wafer through a direct binary search (DBS) algorithm, simulation results show that the designed device has good logic contrast, and the reconfigurable ultra-compact logic gate will become a potential advantage of nano photon integrated ...

Open -type reinforcing bar adds builder's temporary shed and encloses fender

... 种开启式钢筋加工棚围挡，由通过在厂房周围单边的每个钢立柱上部都焊接根牛腿，于牛腿焊接处的上端焊接根斜撑，牛腿与斜撑之间通过竖向支撑管连接，相邻斜撑之间通过若干连接管连接以及连接管上铺设棚顶彩钢板形成的下部空间构成。开启式钢筋加工棚围挡中，每个钢立柱之间在斜撑焊接处上端通过上下两道横梁连接，两道横梁上铺设竖向彩钢板作为遮挡围挡。本开启式钢筋加工棚围挡变进出口空气单向流通为多向流通，大大改善了作业环境，有利于工人身心健康。本实用新型日照光线增强，减少了照明成本，节约了能源。本实用新型的开启式钢筋加工棚围挡内外走行方便，钢筋运输简便快捷，降低了工人劳动强度。 ...

Power box and power box body of uninterruptible power supply

A power supply box body of a power supply box of an uninterruptible power supply comprises a front panel, a rear panel, a battery pack and a box body main body, the box body main body is in a through square cylinder shape, and the front panel and the rear panel are fixedly installed on the box body main body from the front side and the rear side respectively so as to surround the box body main body and define a placement space. The battery pack is placed in the placement space, a bottom air inlet is formed in the bottom of the box body, a plurality of foot pads which are evenly distributed and roughly cylindrical are further fixedly arranged at the bottom of the box body, a plurality of functional components and connectors are arranged on the front panel, and a plurality of connecting pieces are arranged on the inner side wall of the box body. The connecting piece is a hollow long-strip-shaped protrusion formed on the inner side wall of the box body main body, and the front inner plate ...

Be applied to filter circuit , dc -to -ac converter equipment of a plurality of parallelly connected many level modules

... 本实用新型公开了应用于若干并联的多电平模组的滤波电路、逆变器设备。滤波电路包括至少一个滤波支路、与若干多电平模组相对应的若干电感组。每个电感组包括三个单相电感或者包括一个三相电感。每个多电平模组的三相输出端a、b、c分别经过相应电感组汇合到三个节点。每个滤波支路具有三个输出端，三个节点分别与每个滤波支路的三个输出端相连后作为该滤波电路的三路输出。本实用新型既能满足多电平模组并联时的均流问题，又能节省器件，还能做到高效率，减小电抗器。本实用新型还公开了具有该滤波电路的逆变器设备。 ...

DOA-based 5GtoB coverage optimization method and system, and storage medium

The invention discloses a DOA-based 5GtoB coverage optimization method and system and a storage medium, and can be widely applied to the technical field of Internet of Things. Angle quantization is carried out in a coverage angle of a 5G base station, angle quantization lines are obtained after angle edges are enhanced, then angle spectrum characteristics are obtained through calculation according to the angle quantization lines and observation values output by an array, DOA of each angle quantization line is estimated in a serial mode according to the angle spectrum characteristics based on context constraints of an MDP model, and the DOA of each angle quantization line is calculated. And then beam forming is adjusted according to the DOA obtained through estimation, so that subsequent DOA detection in a quantization sequence can be based on the previous DOA value through context constraint, the detection speed and accuracy can be increased, and the angle deviation between the direction ...

Atomization balling reactor with controllable air conditioning flow field, atomization balling method and application

The invention provides an atomization balling reactor with controllable air conditioning and flow field, an atomization balling method and application. The reactor comprises a body and an atomizer, the body is constructed into a cylindrical cavity for accommodating reaction; a conditioning gas flow controller is arranged at the conditioning gas inlet and used for enabling conditioning gas entering the reactor through the conditioning gas inlet to form gas flow with preset flow, and the gas flow cuts in the tangential direction of the cylindrical cavity to form rotational flow, spirally rises in the cylindrical cavity and interacts with liquid drops formed by the atomizer. According to the invention, the tempering air flow rising in a rotational flow manner is introduced from the bottom of the reactor, and the retention time of liquid drops in the furnace body is prolonged by utilizing the lifting effect generated by the tempering air flow; the flexible adjusting modes that the liquid pressure ...

超净直饮水的制取装置及制取方法

... 本发明是超净直饮水的制取装置及制取方法。以净化―生化―氧化―物化的处理条件根据原水的水质变化用或不用膜(或采用任何种类型的膜)―保质―到用户水嘴。是由闪速混合器、兰美拉分离器、臭氧反应器、生化反应池、滤池、膜过滤器组成，通过全封闭的压力管道进入用户厨房水嘴。人们能够直接饮用新鲜、安全的水，让千家万户的饮用水得到安全饮用的保证。本发明技术先进，水质优良，高效封闭，节约洗水，管道输送。无污染，价格低廉，安全方便。节约建设投资和运行能耗，并且管理方便，滤后水质有保证。制取水质符合《生活饮用水卫生标准》GB5749-85和《饮用净水水质标准》CJ94-1999中的规定指标。 ...

Light-viscosity silicon steel environment-friendly insulating paint, silicon steel plate and manufacturing method of silicon steel plate

The invention discloses a light-viscidity silicon steel environment-friendly insulating coating which comprises water and the following effective components: a water-soluble metal inorganic salt A which comprises water-soluble phosphate A1 of at least one of aluminum, zinc, magnesium and manganese; the water-dispersible organic emulsion B comprises at least one of an epoxy emulsion and a curing agent thereof, polyester, polyurethane, polyacrylate and an ethylene-vinyl acetate copolymer; the additive C comprises a structure enhancing additive C1 and a heat-resistant enhancing additive C2, and the structure enhancing additive C1 comprises inorganic nanoparticles; the heat resistance enhancing additive C2 is selected from at least one of boric acid; water-soluble salts of molybdenum, tungsten, vanadium, and titanium; an auxiliary agent D1 and a solvent D2; wherein the solid content mass part ratio of A to B is (35-85): (15-65). Correspondingly, the invention further discloses a silicon steel ...

Infrared radiation system based on wave control adjustment and control method thereof

The invention relates to the technical field of infrared radiation control, in particular to an infrared radiation system based on wave control adjustment and a control method thereof.The infrared radiation system comprises an infrared emission unit used for emitting infrared rays and acting on a receiving object and comprising an emission end, and the emission end is connected to a circuit; the wave control adjusting unit is used for adjusting the wavelength of the infrared rays emitted by the infrared emission unit and comprises a slide rheostat arranged on the circuit, and the slide rheostat is used for adjusting the current on the circuit; the temperature detection unit is used for detecting the temperature of the receiving object; and the feedback unit is used for adjusting the wavelength of infrared rays by detecting the temperature of a received object so as to ensure stable heating of the received object. Through the temperature detection unit and the feedback unit arranged in the ...

Wire end tensioning self-locking clamp

The invention discloses a wire end tensioning self-locking clamp, and belongs to the technical field of tensioning wire clamps, the wire end tensioning self-locking clamp comprises a threading seat and a sliding frame mounted on the threading seat, a wire winding part is rotationally mounted on the sliding frame, and a wire winding block included by the wire winding part is in an elliptic cylinder shape; the threading seat is provided with a height-adjustable blocking piece, the winding block is located between the blocking piece and the inner bottom of the threading seat, and reverse damping parts are installed on the two sides of the winding block. When the winding block rotates anticlockwise to take up the wire, the two reverse damping parts are pushed to contract; when the winding block rotates clockwise, the two reverse rotation damping parts are inserted into the winding block and the blocking piece correspondingly, the winding block is reversely rotated and locked between the winding ...

Land, water and air three way vehicle

... 一种水陆空三用交通工具，属交通运输设备技术领域，它包括器身、尾翼、活动左翼、活动右翼、空气推进器、发动机、水推进器、起落架、操控系统和机载设备。活动左翼和活动右翼结构左右对称布置于器身的左右两侧，且置于器身顶部。尾翼包括垂直尾翼和水平尾翼。起落架采用前三点式轮式结构。机载设备包括导航系统、通信设备、螺陀仪、高度、速度和气象参数采集及显示装备以及台凳、冰箱、空调等家用设备。器身周围配置有多个感应器，便于无人驾驶。所述交通工具运行模式包括陆地用模式，轻载水上用模式，重载水上用模式，低速飞行模式和高速飞行模式。驾驶方式有有人、遥控和无人驾驶方式。用途广泛，节能环保，使用方便。 ...

Method for depositing carbon film on groove type device and groove type device

The invention relates to the field of semiconductor manufacturing, and discloses a method for depositing a carbon film on a groove type device and the groove type device.The method comprises the steps that the surface of a wafer of the groove type device is coated with a photoresist layer in a spinning mode, and a first wafer is formed; performing primary carbon film deposition with the thickness of T1 on the first wafer to form a second wafer; removing the photoresist layer and the carbon film layer deposited on the surface of the second wafer to form a third wafer; the third wafer is subjected to second-time carbon film deposition with the thickness of T2, a target wafer is formed, and c is the step coverage rate of the groove type device. Through the two times of carbon film deposition, the thicknesses of the carbon films on the wafer surface, the side wall of the groove and the bottom of the groove of the groove type device are the same, the same carbon protection capability is achieved ...

Stepping motor torque testing device

The invention relates to the technical field of motor testing tools, in particular to a stepping motor torque testing device. The invention provides a stepping motor torque testing device which can fill a butt joint gap between an output shaft of a stepping motor and a butt joint, reduce abrasion and improve detection stability and efficiency. A stepping motor torque testing device comprises a supporting frame, an installation support, a top cover and the like, the top of the supporting frame is connected with the installation support, and the top of the installation support is connected with the top cover. A connecting rod drives a sliding frame to move leftwards, the sliding frame moves leftwards to drive a rotating disc to move leftwards, and the rotating disc moves leftwards to be in extrusion fit with rotating clamping pieces, so that the rotating clamping pieces get close to each other to conduct operation on a connector and an output shaft of a stepping motor; the effects of filling ...

Traditional Chinese medicine composition for medical treatment period of novel coronavirus infection

The invention relates to a traditional Chinese medicine composition for a novel coronavirus infection medical treatment period, which comprises the following traditional Chinese medicine compositions in parts by weight: 6-15 parts of notopterygium root, 15-30 parts of honeysuckle, 6-15 parts of fructus forsythiae, 6-15 parts of divaricate saposhnikovia root, 15-30 parts of kudzuvine root, 1-5 parts of asarum, 6-15 parts of rhizoma atractylodis, 6-15 parts of angelica dahurica, 6-15 parts of ligusticum wallichii, 6-15 parts of scutellaria baicalensis, 6-15 parts of radix scrophulariae, 3-8 parts of liquorice and 6-15 parts of isatis root. And 6-15 parts of pogostemon cablin. The traditional Chinese medicine has the effects of sweating, eliminating dampness, clearing internal heat and detoxifying with pungent and cool taste. The traditional Chinese medicine composition is used for adults in a novel coronavirus infection medical treatment period to be externally infected with wind-cold damp ...

Grinding and polishing device for stone

The invention relates to the technical field of stone machining, and discloses a stone grinding and polishing device which comprises a base, a plurality of grinding assemblies, a driving motor and a connecting assembly, each grinding assembly comprises a positioning piece, a grinding piece and a limiting piece, the positioning piece is connected with the base, the grinding piece is slidably connected with the positioning piece, and the limiting piece is connected with the base. The limiting part is used for limiting the grinding part to rotate anticlockwise; the driving motor is movably connected with the base; the connecting assembly comprises a plurality of first connecting pieces, a second connecting piece, an elastic clamping piece and a first elastic piece, the first connecting pieces are connected with the polishing piece, at least one clamping groove is formed in the peripheral wall of each first connecting piece, the second connecting piece is connected with an output shaft of the ...

Installation method for foundation lining plate of rolling mill

The invention discloses a rolling mill foundation lining plate installation method. The method comprises the steps that S1, anchoring ribs are additionally welded to the back face of a machined lining plate; s2, replacing a template on one side of the foundation with a first-layer lining plate during foundation construction formwork erecting, then constructing a second-layer lining plate outside the first-layer lining plate, and reserving a gap between the first-layer lining plate and the second-layer lining plate; s3, the flat steel is tightly attached to the inner side of the reserved gap of the lining plate and fixed through spot welding; s4, the lining plate is supported and fixed through a scaffold; s5, foundation concrete is poured; s6, after the strength of the foundation meets the requirement, the scaffold on the outer side is dismantled; s7, the lining plate is welded, and lining plate installation work is completed; according to the method provided by the invention, the problem ...

Intermittent fault diagnosis and residual life prediction method for steer-by-wire system

The invention discloses an intermittent fault diagnosis and residual life prediction method for a steer-by-wire system, and relates to the technical field of fault diagnosis and residual life prediction, and the method comprises the steps: carrying out the modeling, and obtaining a nonlinear bonding graph model of the steer-by-wire system; deducing an analysis redundancy relation of the system according to the model, establishing a fault feature matrix, and isolating elements which may have faults; an improved sea gull optimization algorithm is utilized to estimate intermittent faults, real fault elements are identified from the possible fault element set, and the amplitude, the occurrence time and the disappearance time of each fault of the intermittent fault elements are identified; and constructing frequency characteristics of the intermittent fault according to an estimation result and the observation window, and solving unknown parameters of the degradation model by using the frequency ...

Reduction solution for ion palladium as well as preparation method and application of reduction solution

The invention discloses a reducing solution for ion palladium and a preparation method and application of the reducing solution for ion palladium, and the reducing solution for ion palladium is composed of a dimethylamine borane composite reducing agent based on a boron compound, a stabilizer containing metal ions and other additives, the invention has the following beneficial effects: through at least one boron-based dimethylamine borane and sodium borohydride composite reducing agent and a composition containing a plurality of trace metal element stabilizers and other additives, the long-term problems that a reducing solution is unstable in reducing capacity, easy to decompose and short in service cycle are solved; and excellent stability is maintained for reduction of different types of substrate materials after activation treatment.

Agricultural mechanical weeding device

The invention discloses an agricultural mechanical weeding device which comprises a rack, a control box and a transverse fine adjustment mechanism arranged on the lower side of the rack. A binocular camera is arranged at the top of the control box; the transverse fine adjustment mechanism comprises two transmission shafts, a plurality of connecting seats are fixedly arranged on the transmission shafts at equal intervals, and the bottom end of each connecting seat is connected with a lifting driving mechanism; the lower end of the lifting driving mechanism is fixedly connected with one end of a driving seat; a damping mechanism is connected between the other end of the driving seat and the rack; a servo motor and a weeding tool in transmission connection through a transmission universal joint are arranged at the bottom end of the driving seat; the control box is electrically connected with the binocular camera, the reciprocating driving motor, the lifting driving mechanism and the servo ...

Metal oxide semiconductor field effect transistor and manufacturing method thereof

According to the metal oxide semiconductor field effect transistor and the manufacturing method thereof provided by the invention, the Schottky barrier diode is integrated in the JFET region, so that the silicon carbide bipolar degradation phenomenon is improved, the chip reliability is improved, and the module packaging cost is reduced; according to the Schottky barrier diode of the groove type structure, a JFET region electric field of the metal oxide semiconductor field effect transistor and a Schottky contact electric field of the Schottky barrier diode are effectively protected, and the blocking capacity of the metal oxide semiconductor field effect transistor is improved; the groove-type source electrode structure increases the contact area of a source hole in a three-dimensional space, reduces the influence of source contact resistance on the overall resistance of the device, and facilitates the output of larger current capacity.

Device and method for evaluating cohesive force in soil body

The invention discloses a device and a method for evaluating cohesive force in a soil body, the device comprises a power component and a detection component, the power component comprises a base, a motor is mounted on the base, an output shaft of the motor is fixedly connected with one end of a transmission vertical rod, the other end of the transmission vertical rod is fixedly connected with a plurality of horizontal rods, and the horizontal rods are fixedly connected with the transmission vertical rod. Each horizontal rod is provided with a detection part. The detection part comprises an experiment platform, a soil sample containing barrel is installed on the experiment platform, a plurality of round holes are formed in the wall face of the soil sample containing barrel, a hydraulic oil cylinder is arranged on the upper portion of the soil sample containing barrel, and a gravity sensor is arranged on the lower portion of the soil sample containing barrel; according to the method, the ...

Hydrophobic copper nanocluster colloidal solution with stable surfactant as well as preparation method and application of hydrophobic copper nanocluster colloidal solution

The invention relates to preparation of a hydrophobic copper nanocluster colloidal solution with a stable surfactant and application of the hydrophobic copper nanocluster colloidal solution in detection of Fe < 3 + >, and the hydrophobic copper nanocluster colloidal solution with the stable surfactant is formed by dissolving Cu4I4 in DMSO (dimethylsulfoxide) and then self-assembling with a surfactant Tyloxapol solution. The Tyloxapol-stabilized hydrophobic copper nanocluster colloidal solution prepared by the invention has outstanding optical properties, the stability in a water-containing mixed solvent is greatly improved, and the time of settling for several minutes in the absence of Tyloxapol is greatly improved to the time of settling for more than one week and then the solution begins to slowly settle. The fluorescence of the Tyloxapol-stabilized hydrophobic copper nanocluster colloidal solution is quenched after Fe < 3 + > is added, the detection limit is 77nM, and the Tyloxapol-stabilized ...

SNP (Single Nucleotide Polymorphism) molecular marker related to breast muscle rate of meat type duck and application of SNP molecular marker

The invention relates to the field of biotechnology and poultry breeding, and particularly discloses a molecular marker related to the breast muscle rate of a meat type duck and application of the molecular marker, the molecular marker comprises a G-A single nucleotide polymorphism (SNP) mutation site, and the SNP mutation is located at the 140666858 site of a duck chromosome 1 NC051772.1. The mutation site obviously influences the breast muscle rate of the meat type duck, wherein the breast muscle rate of the AA genotype is obviously higher than the breast muscle rates of the GG genotype and the GA genotype; molecular marker-assisted selection is carried out by utilizing the site, so that the breeding efficiency of the breast muscle rate of the meat duck can be improved, and the breeding process of meat ducks is accelerated.

Method for preparing super-hydrophobic silicon dioxide by using hydrophobic treatment agent

The invention discloses a method for preparing super-hydrophobic silicon dioxide by using a hydrophobic treatment agent, which comprises the following steps of: 1, synthesizing the hydrophobic treatment agent, namely reacting organosiloxane with an amino silane coupling agent for a period of time at a specified temperature under the action of a catalyst, and polymerizing to generate the hydrophobic treatment agent; and step 2, hydrophobic treatment process of silicon dioxide: mixing the silicon dioxide with a hydrophobic treatment agent, adding a proper amount of solvent, stirring for a certain time, uniformly mixing, reacting at a specified temperature, and drying to obtain the hydrophobic silicon dioxide. And reacting the treating agent with silicon dioxide to obtain the super-hydrophobic silicon dioxide. The hydrophobic treatment agent obtained by the invention is high in activity and simple in synthesis process, and can be used for hydrophobic treatment of various silicon dioxide; meanwhile ...

Self-stabilizing flight device

The invention provides a self-stabilizing flight device, and relates to the technical field of aviation, the self-stabilizing flight device comprises a frame body and a support column, and the support column is provided with a rotor assembly and a counterweight assembly; the rotor wing assembly is connected to the upper portion of the supporting column, the counterweight assembly is connected to the lower portion of the supporting column, and the frame body is movably connected between the rotor wing assembly and the counterweight assembly through the movable assembly; and the movable assembly can enable the rotor wing assembly to tilt back and forth and deflect left and right relative to the frame body so as to control the flight attitude of the self-stabilizing flight device. The unmanned aerial vehicle has the beneficial effects that the counterweight assembly is arranged to control the gradient of the lifting surface formed when the rotor assemblies work, the unmanned aerial vehicle ...

High-rise building logistics transportation system based on unmanned aerial vehicle

... 种基于无人机的高层楼宇物流运输系统，属于现代物流技术领域，包括无人机、无人机停放平台、管道机器人、主管道、次级管道和楼宇。无人机停放平台通过皮带运输与主管道的上端口连接，主管道由上至下布置，次级管道与主管道连接。管道机器人在主管道内运行，次级管道内设置有皮带，快件从主管道由管道机器人运送到次级管道与主管道的连接处，再由次级管道经过皮带或滑道运输到次级管道的收件端口。当管道机器人把快件送到次级管道与主管道的连接处放下快件后，返回主管道上端口。本系统克服传统的快递在取件寄件方面浪费的人力物力，效率高，速度快。 ...

Slurry shield under-pressure warehouse entering construction method

The invention relates to the technical field of underground space engineering construction, in particular to a slurry shield under-pressure warehouse entering construction method which comprises the steps that bentonite slurry is prepared and transported to the tail of a shield tunneling machine; the bentonite slurry is pumped to an excavation bin and a bubble bin from the tail of the shield tunneling machine, a new tunnel face mud film is formed at the position of a tunnel face, the tunnel face mud film is used for replacing the mud film during normal excavation, and the density of the tunnel face mud film is larger than that of the mud film during normal excavation; and pressure fluctuation is monitored, the tunnel face mud film is observed, and if the pressure in the bin is kept stable and the mud film does not have obvious cracks, constructors can be organized to enter the bin for operation under pressure. By means of the construction method, the construction difficulty is reduced, ...

Inner gearing flat blade hydroelectric generation device

... 一种内齿啮合平板叶片水力发电装置，属发电设备技术领域，包括主轴、齿轮、带齿环形平板叶片、方管、飞轮、动力传递装置和发电机。齿轮固定安装在主轴上。主轴竖向布置于方管的左侧板的右侧，主轴的上下两端分别通过轴承安装在顶板和底板上。带齿环形平板叶片内周带有一圈能与齿轮相啮合的齿，安装在方管内并套装在主轴上。带齿环形平板叶片两端的半圆弧形体的顶部安装了导轮。方管的顶板下表面安装了导轨，导轨的外周呈半圆形。飞轮固定安装在主轴的上端。主轴和发电机之间靠动力传递装置连接。带齿环形平板叶片在流水的作用下会连续不断地作半圆周运动，从而驱动发电机发电，发电机发出的电经处理后储存、上网或直接供给当地用户使用。 ...

SNP (Single Nucleotide Polymorphism) site related to growth and development of melanmen ducks and application of SNP site

The invention relates to the technical field of biology, and particularly discloses an SNP (Single Nucleotide Polymorphism) site related to growth and development of a melanmen duck and application of the SNP site, the molecular marker is G-C single nucleotide polymorphism (SNP) mutation, and is located at the 100163925th site of a duck chromosome 3 NC040048.1. The mutation site obviously influences the 10-week-old body weight of the melanmen duck, and the 10-week-old body weight of a CC genotype individual is obviously higher than that of a GG genotype individual; molecular marker-assisted selection is implemented by using the site, so that the breeding efficiency of the body weight of the melanmen duck can be improved, and the breeding process of meat ducks is accelerated.

Ventilation structure and air compressor

According to the air exchange structure and the air compressor, the air exchange structure comprises the air exchange box and the air cylinder, the end cover of the piston cylinder is connected with the opening end of the air exchange box in a welded mode, the situation that a stud occupies the space of an air exchange cavity, and consequently the air inlet sound is large is avoided, assembling of the air exchange structure is simplified, and the assembling efficiency is improved; due to the fact that the air cylinder vibrates in the working process, the risk that screws are loosened due to vibration can be avoided through the welding mode, and therefore the air tightness and the ventilation effect are affected, and in addition, the cylinder body is arranged in the ventilation cavity, the volume of the ventilation cavity is increased, the decibel of air inlet sound is reduced, and the service life is prolonged. And heat generated when the air cylinder works can be dissipated in an air exchange ...