793results about How to "Solve the blockage" patented technology

The invention discloses an accompanying robot path planning method and system based on obstacle virtual expansion. The method includes a step of constructing an environment map, namely a step of constructing a two-dimensional occupancy grid map according to an actual scene, with each grid being labeled as an obstacle zone or a walkable zone; a step of setting initial coordinate positions of an accompanying robot and a movable target in the grid map; a step of constructing a sliding window for the robot; a step of subjecting the obstacle zones to expansion processing, namely a step of performing initial expansion on grids where an obstacle is according to a shortest distance between the center of the robot and a body edge, determining the number of grid layers expanded on the basis of the minimum impassable zone, adopting the grids in the expanded zones as obstacle virtual expansion grids, and labeling the grade of danger of obstacle influences on the obstacle virtual expansion grids; and a step of planning a path for the accompanying robot based on an A* algorithm and an incremental path planning process. Incremental path updating is performed by adopting a path of the last moment,thus saving path planning time and increasing the response speed of the accompanying robot.

A hardware/software architecture and process methodology are disclosed by which mobile payment platforms are enabled in an existing payment processor's merchant base at their point of sale system (“POS”) without the necessity of implementing new hardware or software at the merchant level and for each of said merchant's POS system.

The invention provides an integrated automatic control system for underground dripping irrigation water, fertilizer and medicine and a method thereof, which belongs to the water saving irrigation field, wherein, the system comprises a data input system, a sensor device, a master control device and an output device; the method comprises the following steps: A. initialization data of crops is set; B. a plurality of parameters related to cropland irrigation are acquired; C. a plurality of acquired parameters related to cropland irrigation are combined with the initialization data, and irrigation decision-making software is used for analysis and calculation; D. instructions are executed according to analysis and calculation results. The invention utilizes modern information technologies to grasp mutation of cropland environmental parameters, and has the advantages of high automatic control degree of scientific irrigation and drip irrigation and effective lightening of labor intensity.

The gaseous effluent to be treated is contacted in C1 with an absorbent solution selected for its property of forming two separable phases when it has absorbed an amount of acid compounds and when it is heated. The absorbent solution laden with acid compounds is then heated in E1 and E3 so as to separate two fractions in BS1: a first absorbent solution fraction depleted in acid compounds and a second absorbent solution fraction enriched in acid compounds. The second fraction is regenerated in C2 so as to release part of the acid compounds, and the first absorbent solution fraction and the regenerated absorbent solution are recycled as absorbent solution.

According to the invention, an absorbent solution portion circulating in C1 is cooled in E2 in order to prevent demixing of the solution in column C1.

The invention discloses a method for treating waste incineration fly ash by using plasmas. The method comprises the following steps of: regulating the weight ratio of CaO to SiO2 in waste incineration fly ash; then granulating and compressing into blocks for pretreatment; sending the treated fly ash into a metal melting pool in a plasma reaction furnace through a dividing wheel and quenching fly ash melts into granules through water; and harmlessly treating tail gas in the furnace through a treatment system. The invention solves the problem of molten glass during treating the waste incineration fly ash by adopting plasma equipment, the problem of bridging in a feeding process, the problem of jamming of a feeder, the problem of pipeline blockage caused by the diffusion of the fly ash alongwith the tail gas, the problem of obtaining glass harmless to the environment by retreating the melts and the problem of tail gas innocent treatment.

A solid electrolyte membrane for solid polymer fuel cells, or the like is provided that is chemically stable in a strong acid atmosphere, and has low methanol cross-over as well as high proton conductivity. The solid electrolyte membrane is manufactured, using an electrolyte composition comprising a sulfonic acid group-containing polymer having a specific triazine structure. This polymer can be synthesized, for example, from a sulfonic acid group-containing dihydroxy compound having a triazine structure, and a difluoride.

The invention discloses a preparation method of hollow fiber in coaxial electrostatic spinning. The method includes a first step of selecting synthetic macromolecule and enabling the synthetic macromolecule to be solved in solution and stirred until the synthetic macromolecule is completely solved according to prepared final fiber, and a second step of using the solution obtained in the first step as outer pipe spinning liquid which is injected into an outer pipe of a coaxial spinning nozzle, ventilating air into an inner pipe and conducting the coaxial electrostatic spinning under the condition of room temperature. The prepared fiber is in an obvious hollow structure and can be applied to the medical field of drug carriers, artificial dialysis and the like. The preparation method of the hollow fiber in the coaxial electrostatic spinning has the advantages of being simple and convenient to operate, temperate in reaction condition, low in cost, and capable of being completed just by one step without need of using inner layer materials and subsequent processing, greatly saving time and material cost, meanwhile avoiding influences of the remained inner layer materials on the hollow fiber and having good application prospect.

The invention relates to a steam stripping method of process condensate in CO conversion. The invention is characterized in that the process condensate firstly enters the upper part of a carbon dioxide steam stripping tower for flashing evaporation; secondary steam from the upper part of an ammonia-evaporated steam stripper tower enters the bottom part of the carbon dioxide steam stripping tower and steam strips carbon dioxide by countercurrent contacting with the process condensate after flashing evaporation; the process condensate after flash evaporation and the steam stripped carbon dioxide carry out countercurrent contact; the process condensate after flash evaporation and steam stripping enters the upper part of the ammonia-evaporated steam stripper tower from the bottom part of the carbon dioxide steam stripping tower and is steam-stripped by low-pressure steam entering from a kettle of the ammonia-evaporated steam stripper tower; gas phase is treated by secondary condensation to obtain non-acid-coagulated gas and condensate sewage; and steam stripping water is obtained from the bottom part of the ammonia-evaporated steam stripper tower. The invention carries out steam stripping on the upper and lower towers to carbon dioxide and ammonia in the process condensate respectively, thus avoiding the possibility of coexistence of carbon dioxide and ammonia in a condensing system, effectively solving the problem that the steam stripping system of the process condensate in the conversion procedure occurs ammonium salt crystallization blockage and prolonging the period of stable operation of a conversion device.

The invention provides a device for improving the quality of the coal by pyrolysis, comprising a rotary drier, a pyrolyzer and a heating rotary kiln. The rotary drier is used for receiving and drying raw coal with granularity being less than and equal to 30mm, and is provided with a sleeve structure to directly change heat between the raw coal and the hot flue gas and indirectly change heat between the raw coal and hot semicoke; the pyrolyzer receives mixture of the dried raw coal and the high-temperature semicoke by a feed line of solid material, directly changes heat between the raw coal and the hot semicoke, pyrolyzes the mixture, and is further provided with a heat clamping sleeve accompanied with high-temperature flue gas; and the heating rotary kiln is used for receiving the hot semicoke from the pyrolyzer and processing the hot semicoke by the means of heating. The device for improving the quality of the coal by pyrolysis has flexible operation, good quality of the generated semicoke and the generated tar, high cascade utilization of energy and high system thermal efficiency, properly solving the technical problems such as dust and tar blocking, high dust content in the tar, etc.

A bonding wire comprising a core and a coating layer formed on the core, wherein the coating layer is formed from a metal having a higher melting point than the core, and further has at least one of the following characteristics; 1. the wet contact angle with the coating layer when the core is melted is not smaller than 20 degrees; 2. when the bonding wire is hung down with its end touching a horizontal surface, and is cut at a point 15 cm above the end and thus let drop onto the horizontal surface, the curvature radius of the formed arc is 35 mm or larger;

3. the 0.2% yield strength is not smaller than 0.115 mN/μm² but not greater than 0.165 mN/μm²; or 4. the Vickers hardness of the coating layer is 300 or lower.

A medicinal solution injection apparatus 10 includes a composite needle 12 including a needle base portion 12c, an injection needle 12d, and an adjustment needle 12e, a pressure generating portion 13 configured to discharge a compressed air, a measuring portion 14 configured to measure a filling amount and a filling speed of a medicinal solution by measuring a position of a gasket 17a of a syringe 17, and a control portion 15 configured to control the pressure generating portion 13 and the measuring portion 14. The compressed air is introduced into a vial container 16 through an edge 12h of the adjustment needle 12e located above a liquid surface 16a of the medicinal solution in the vial container 16 (outside the liquid surface) to press the liquid surface 16a of the medicinal solution downward, so that a medicinal solution 16b is injected into the syringe 17 through an edge 12i of the injection needle 12d in the medicinal solution 16b. The medicinal solution injection apparatus 10 can accurately and efficiently inject the medicinal solution 16b of the vial container 16 into the syringe 17 while suppressing the medicinal solution 16b from foaming.

The invention discloses a quadruped robot path planning method and system based on an improved A* algorithm. The method comprises the steps of constructing an environment raster map,and representing aquadruped robot and a target position through raster coordinates; on the basis of the smallest distance between the edge of a robot body and the center of the quadruped robot,performing initial expansion on the raster where a barrier is located,and enabling the barrier and the raster obtained after initial expansion to jointly form the minimum impassable region; according to the the safe distanceneeded by actual operation of the quadruped robot,determining the outward expansion raster layer number on the basis of the minimum impassable region,and adopting the raster obtained after outward expansion inside the region as a barrier virtual expansion raster; utilizing the improved A* algorithm for determining a passing price value from the initial raster and the target raster,and determiningthe corresponding path obtained when the passing price value from the initial raster point to the target raster point is minimum is determined as the optimal path. The problem that a narrow channel is blocked can be avoided while the quadruped robot is driven to move away from the barrier.

The invention discloses a multi-beam ad hoc network channel access control method, aiming at providing an access control method which has a high channel utilization rate and can improve the network performance. The method of the invention is implemented through the following technical scheme: for a distributed multi-beam scene, combining the characteristics of multi-beams, utilizing the broadcastchannel characteristics of an omni-directional network and the high bandwidth and high directivity characteristics of a directional network, using the short message protocol interaction between nodes,and assisting to complete the high-rate parallel transmission of multiple nodes on a directional link; using space division multiplexing among the nodes to achieve the concurrent communication between multiple transmission nodes and multiple receiving nodes; when a network cluster head node receives RTS frames of all other nodes, running a multi-beam ad hoc network channel access allocation algorithm; and searching an optimal transceiving node pair set in each time slot, finding an edge set with the maximum network capacity as a channel access allocation result of each node in the next directional link time slot, and further implementing the simultaneous multi-transmission and multi-reception of the multiple nodes at the same frequency.

The invention provides a distributed type caching method and system. The method comprises the steps of configuring backstage cache management strategies on backstage cache management configuration, wherein the backstage cache management strategies comprise the step of setting server nodes in which service data are stored correspondingly, calling the service data in a database according to the backstage cache management strategies at service data generation time, and sending the service data to corresponding service nodes according to a unique primary key value of the service data. The method and system realize distributed cache of the service data, greatly reduce pressure of server nodes, and avoid loss of the service data and blocking of service nodes I/O.

Disclosed is a method for acquiring nuclear fuel assembly resonance parameters. The method includes the following steps: building a commonly-used nuclide multi-group database and a changing curve of resonance peaks along with energy; distinguishing isolated peaks and dense peaks, wherein the interval where the isolated peaks are located is a resonance energy region low energy section with obvious resonance interference, and the interval where the dense peaks are located is a resonance energy region high energy section without obvious resonance interference; solving a subgroup total cross section, a subgroup partial cross section, subgroup probability and corresponding multi-group data coupling in the resonance energy region high energy section by using a subgroup method; coupling calculation of the resonance energy region high energy section and calculation of the resonance energy region low energy section through inter-group scattering from the high energy section to the low energy section, acquiring the resonance parameters of the high energy section, and then calculating a scattering source and a fission source from the high energy section to the low energy section; acquiring a multi-group neutron energy spectrum in a low energy region by using a wavelet expansion method; and merging and continuing the total cross section and the partial cross section by using the multi-group neutron energy spectrum of the resonance region low energy section to acquire the nuclear fuel resonance parameters of the low energy section. By means of the method, resonance parameters of nuclear fuel assemblies with any resonance material composition, any geometry and any quantity of resonance regions can be effectively acquired.

The invention relates to a polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent and a blockage removal technology. The polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent is prepared by mixing the following compositions in percentage by mass: 0-30% of alcohol substances, 0-10% of polyethylene glycol, 1-40% of organic solvents, 0-20% of alkyl sulfonate, 0-20% of alkyl sulfobetain, 0-20% of polyoxyethylene ether, 0-20% of sorbitan monstearate, 0-20% of ammonium fluoride, 0-20% of organic acid, 0-20% of organic phosphonic acid, 0.5-2% of acidizing corrosion inhibitor, and the balance of industrial hydrochloric acid, then performing high-temperature high-speed stirring, adding other treating agents and evenly stirring; the blockage removal technology comprises the following steps: performing sand removal, injecting prepad fluid, then sequentially firstly injecting high-concentration polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent solution and low-concentration polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent solution, then injecting displacement fluid, finally injecting water to be filled in an oil pipe, reacting, and restoring the water injection. The blockage removal success rate is high.

The invention discloses a smoke denitration device for preventing a catalyst from being plugged by popcorn ash. The device comprises a smoke inlet (1), a horizontal connecting flue (2), a vertical connecting flue (5), a denitration reactor (7), an outlet flue (9) and a smoke outlet (10) which are communicated in sequence, wherein an ammonia spraying grating (4) is arranged in the vertical connecting flue (5); and a rectifying device (6) and a plurality of layers of catalysts (8) are arranged in the denitration reactor (7) along the smoke flowing direction. The device provided by the inventionis characterized in that a metal screen (3) is arranged on the upstream of the ammonia spraying grating (4) in the vertical connecting flue (5). The smoke denitration device for preventing the catalyst from being plugged by the popcorn ash provided by the invention can be used for efficiently intercepting the 'popcorn ash' with a large grain size in the coal-fired smoke, separating the 'popcorn ash' from the smoke, and solving the problem that the catalyst is brushed and plugged by the 'popcorn ash'.

The invention relates to a sample pretreatment integrated chip which comprises a cover plate and at least one layer of structure plate, wherein the structure plate is provided with micro grooves and at least three holes communicated with the micro groove; and the micro grooves are at least two of the following grooves: a separation groove having a micro structure of cross-flow separation or cross-flow filtration, a purifying groove having a solid phase extraction micro structure and a mixed groove formed by converging at least two secondary grooves. The sample pretreatment integrated chip has the pretreatment functions of separation, filtration, mixing, purifying, and the like, is used for the pretreatment of samples of blood, urine, and the like and gains analysis samples of DNA, protein, amino acid, and the like which satisfy the follow-up detection need. The sample pretreatment integrated chip separates or filters granules or cells on the basis of the principle of cross-flow separation or cross-flow filtration, ruptures cells on the basis of the principle of a chemical method and purifies target molecules on the basis of the principle of solid phase extraction. The invention develops the integrated micro-fluidic chip for the pretreatment of multiple samples by adopting the micro-electromechanical system technology, has at least two sample pretreatment functions and has continuous and efficient sample pretreatment effect.

The invention discloses a method for continuously preparing white carbon black and ammonium fluoride by carrying out fluosilicic acid ammoniation, which relates to a chemical production method, in particular to a method for preparing the white carbon black and the ammonium fluoride. The method comprises the following steps: (a) at a temperature between minus 5 and 30 DEG C, starting a stirrer and an air compressor, blowing compressed air into an outlet pipe of a reactor by the air compressor and adding fluosilicic acid and ammonia into the reactor simultaneously; (b) when the fluosilicic acid and the ammonia are added to the position of an overflow pipe in the reactor, opening an emptying valve to continuously feed and discharge materials and controlling a PH value of the reaction, wherein the period of the continuous reaction is 24 hours; (c) in the reaction process, filtering the materials discharged by the step (b) to obtain a white carbon black filter cake and filtrate of ammonium fluoride, and washing and drying the white carbon black filter cake to obtain a white carbon black finished product, wherein the filtrate is ammonium fluoride solution; and (d) after performing a reaction for 24 hours in the reactor, emptying the materials, cleaning the reactor to be used next time and producing the white carbon black finished product by using the materials according to the step (c), wherein the ammoniation yield of the process can reach 99.99 percent. The method of the invention effectively overcomes the defects of the existing intermittent technology and has the advantages of continuous, stable and simple process and long operation period.

The invention discloses an ultrasonic atomization assisted electrospinning technique and belongs to the field of preparation and applications of nano materials. According to the technique, prepared graphene, graphene oxide, carbon nano tubes and other nanoparticles are dispersed in a storage tank of an ultrasonic atomizer, atomization spraying of the nanoparticles is realized, and the problem of nanoparticle blocking caused with a conventional mixing method is solved. Ultrasonic atomization and electrospinning techniques are combined for use, a prepared nanoparticle polymer composite film has uniformly mixed nanoparticles, and agglomeration is not easily caused. The polymer fiber film prepared with the technique has high separation efficiency, good strength and excellent water resistance, and the physical and chemical properties of the composite film material are improved. Compared with a conventional electrospinning technique, graphene and the carbon nano tubes can be mixed in any ratio, the conventional blocking problem of an electrospinning sprayer is solved, and the technique has important application prospect in environment treatment and electrode material preparation.

The invention discloses an on-line calibrating method of inertia/astronomy combination system error. According to the method, prior attitude information provided by strapdown inertial navitation is used to obtain a prediction coordinate of a fixed star coordinate at a star sensor image, a star atlas identification algorithm is used for realizing coupling of star point position through practical shooting and the predicted coordinate, accurate connection of deviation of a star point prediction image position coordinate and the practical star point image coordinate as well as error with inertialnavitation attitude, error with the star sensor internal and external parameters and the amount of dispersion with the star point coordinate can be established, and the estimation and compensation ofthe inertial navitation and the star sensor error can be realized by using a Kalman filtering algorithm. The method can realize global calibration on all error factors, increases the comprehensive performance of an inertia/astronomy combination navigation system, and can reach optimum combination. The method can avoid an attitude solving method of the star sensor, normal work of a filter in a viewfiled under less available star numbers (if the star number is less than 3), the effective rate of the observation information is increased, and the algorithm reliability is increased.

The invention discloses a dry-process deslagging fluidized bed gasification reaction device which comprises a reactor body, a multi-stage cyclone separating device, an air distribution device, a feed system and a return system. The dry-process deslagging fluidized bed gasification reaction device disclosed by the invention adopts a circulating fluidized bed reactor as a gasification reaction body, realizes the dry-process deslagging by adopting medium-high temperature gasification, achieves the purpose of improving carbon transformation rate and cooled coal gas efficiency by adopting two-stage type graded gasification, enhances the operation and running stability by combining a simplified deslagging device and an air distribution plate design, is suitable for the gasification transformation of various carbon-containing solid fuels and has large-scale popularization and application prospect.

The invention relates to a demand response type bus scheduling method. The method comprises the following steps: S1, defining an operation mode of a demand response type bus; S2, based on the operation mode, establishing a demand response type bus deep reinforcement learning model; S3, obtaining training data, and training the demand response type bus deep reinforcement learning model by using thetraining data to obtain a demand response type bus deep reinforcement learning optimization model; and S4, scheduling the demand response type bus based on the demand response type bus deep reinforcement learning optimization model. Compared with the prior art, the modeling and solving process is simple, and the model is easy to migrate and generalize.

The invention discloses a method for extracting an active ingredient from maca. The method comprises the following steps of: performing vacuum drying on roots and stalks of the maca which are taken as a raw material, breaking walls, crushing, performing wet granulation, performing supercritical carbon dioxide extraction, separating to obtain a fat-soluble active substance in the maca, and extracting maca polysaccharide from maca extract residue by a hot water extraction method. According to the method, a functional active factor in the maca is extracted by a supercritical carbon dioxide extraction technology, and then the maca polysaccharide in the extract residue is extracted by the hot water extraction method; and the high-efficiency extraction and comprehensive utilization of the active ingredient in a maca raw material are realized by a separation and screening combination method from a crude extract to an effective part and the active ingredient.

The invention provides a slurry stirrer having pulverizing and vibration resisting functions, and relates to the technical field of batteries. The slurry stirrer having pulverizing and vibration resisting functions comprises a slurry stirrer body, a pulverizing bin and a fixing base, the fixing base is located below the pulverizing bin, and the center of the top of the slurry stirrer body is fixedly connected with the pulverizing bin. The slurry stirrer having pulverizing and vibration resisting functions is provided with a second fixing sleeve, an auxiliary pulverizing block and a pulverizing blade, so that the slurry stirrer has the pulverizing function, the problem of the current slurry stirrer that the quality of the stirred product is poor as added materials are condensed to blocks after being placed for a long period of time is effectively solved, due to the arrangement of a damping cylinder, a spring, a bumper post and a movable plate, the slurry stirrer have the vibration resisting effect, and the problems that strong vibration of high-speed stirring on the ground surface affects the moods of staffs and surrounding residents and the loss rate of the slurry stirrer is also accelerated are effectively solved.

The invention discloses a method for extracting dimethyl sulfoxide. The method comprises the following steps: inputting a raw material which contains dimethyl sulfoxide into a first evaporator, heating, partially evaporating, then carrying out vapor-liquid separation, and inputting an obtained vapor phase into a rectifying tower; inputting an obtained liquid phase into a second evaporator, heating, partially evaporating, then carrying out the vapor-liquid separation, inputting the obtained vapor phase into the rectifying tower, and inputting an obtained liquid phase into a wiped-film evaporator; extracting a dimethyl sulfoxide crude product from the tower kettle of the rectifying tower, inputting the dimethyl sulfoxide crude product into a third evaporator, heating, partially evaporating, then carrying out vapor-liquid separation, inputting the liquid phase into the wiped-film evaporator, and inputting the obtained vapor phase used as a heating medium back to the first evaporator, and naturally condensing to obtain purified dimethyl sulfoxide. The method disclosed by the invention can be used for greatly reducing the energy consumption in the recovery process of the dimethyl sulfoxide, preventing the problem of blockage of solid materials inside the rectifying tower and obtaining a dimethyl sulfoxide product with high quality and high recovery rate.

The invention relates to a synchronous fluorine-calcium removal treatment process for the reverse osmosis concentrated liquor of waste water from lead-zinc smelting. The process comprises the following steps: firstly, removing fluorine by virtue of oxidation and precipitation, secondly, removing calcium by precipitating, thirdly, removing fluorine by virtue of adsorption, next, sequentially regenerating activated aluminum oxide, removing fluorine from the generated mixed liquor, removing calcium from the generated mixed liquor and treating the generated mixed liquor, and finally, removing fluorine by precipitating, wherein the precipitation sludge generated in the calcium removal process is gathered and dehydrated by virtue of filter pressing, the water obtained by filter pressing is returned to a reverse osmosis concentrated liquor collecting tank for circular treatment, and the mud cake is subjected to unified disposal. After the oxidization, precipitation and adsorption treatment processes are adopted, the fluorine content and the calcium content of the reverse osmosis concentrated liquor are lower than 3mg/L and 50mg/L, respectively, and the problems of scaling and blockage caused by fluorine ions and calcium ions in the subsequent evaporation and concentration process of the reverse osmosis concentrated liquor are solved.

The invention relates to a vacuum system which comprises a plurality of drainage sources, a plurality of vacuum conveying pumps, a sewage collecting part and a control center. Each sewage source comprises a drainage pool with a sewage outfall, a vacuum release valve, a vapor integrated double electromagnetic valve and a control device; and the sewage outfall of the drainage pool is connected with a discharge pipe of the sewage source by the vacuum release valve. The discharge pipe of the sewage source is connected with a sewage suction pipe by an isolation ball valve; the sewage suction pipe is connected with an inlet pipe of each vacuum conveying pump; and an outlet pipe of each vacuum conveying pump is connected with a sewage discharge pipe which is connected to the sewage collecting part. A pressure detection device in electric connection with the control center is arranged on the sewage suction pipe; and the vacuum conveying pump and the control center are in electric connection. In the vacuum system, the control center carries out intelligent control that one or a plurality of the vacuum conveying pumps are opened according to the detected vacuum degree of the sewage suction pipe; the vacuum system can ensure the vacuum degree of the sewage suction pipe to make sewage discharging smooth, effectively saves energy, has simple control, reduces cost, improves the reliability of the system and is convenient to maintain.

A wrapping member for wrapping a glass substrate to be used in production of a FPD such as a liquid crystal display and a plasma display and a method of transferring a glass substrate for FPD, in which the wrapping member for wrapping either one or both of the surfaces of the glass substrate for FPD before transfer is made of a water-soluble film material dissolved in water, so that preprocessing of each of the glass substrates in the production line of the FPD may be simplified and so that the outer shape of a package formed by packing the glass substrates in a transfer box and a lid for closing the transfer box is reduced to an extent enabling a plurality of the glass substrates to be transferred at a high efficiency.

The invention relates to a crossroad without traffic light, which comprises crossed longitudinal and horizontal roads, which are solid crossed, and one of them is extended to the horizontal road at the back of another road via the horizontal road at the front of cross part; the longitudinal or horizontal roads of horizontal plane have right bend channel at the crossed part to connect the vertical road and a passage horizontal channel near the crossed rod. The invention can improve the traffic efficiency, to separate the crosswalk and the vehicle channel, to confirm the safety.