109results about How to "Reduce total time" patented technology

The invention relates to a manufacturing method of a small-caliber nickel-copper alloy seamless heat exchange tube. The manufacturing method comprises the steps that S1, a UNS N04400 round steel material is subjected to peeling, PT inspection, shearing, centering, grinding, heating, perforating, water cooling and inspection; s2, a hot-punched blank is only cleaned, and inspection is conducted after point grinding is conducted after internal and external polishing; s3, the obtained pipe blank is subjected to first-pass intermediate product cold rolling, deoiling, straightening, pipe cutting, grinding, inspecting and cleaning; s4, second-pass intermediate product cold rolling, deoiling, heat treatment, straightening, pipe cutting, grinding, inspection and cleaning are conducted; S5, finished product cold rolling is conducted; s6, deoiling a finished product; s7, heat treatment of a finished product; s8, straightening a finished product; s9, performing ultrasonic vortex treatment, water pressure treatment and pipe cutting on a finished product; and S10, finished product surface inspection, size inspection, cleaning, mark spraying and finishing procedures are carried out. The method has the advantages of high one-time inspection qualification rate, yield and dimensional precision of products, good inner and outer surface quality, stable structure performance and high practicability.

The invention relates to the technical field of computer-aided engineering, in particular to a nonlinear efficient iterative solving method for thermal strain load, which is used for solving an obtained finite element equation by using a modified Newton-Raphson method and comprises the following steps of: firstly, establishing a geometric model to be analyzed and performing grid division; the method comprises the following steps: firstly, setting a model to be analyzed, then setting boundary conditions and temperature field change conditions of the model to be analyzed, finally, inputting the conditions into an algorithm solver, solving a nonlinear equation set, iteratively inputting a load continuously according to a modified Newton-Raphson method in the solving process, calculating node displacement until convergence, and solving stress-strain conditions in the welding process according to a material constitutive relation. In the solving process, by judging the size of the two norms of the displacement increment obtained in the adjacent increment step heuristic stage, the convergence of nonlinear solving of the structure is enhanced through the calculation mode, and the solving speed of the nonlinear problem in the thermal elastic-plastic constitutive structure is increased.

The invention relates to the technical field of robots, and provides a Robomaster multi-sensor fusion decision-making-based sentry robot which comprises a chassis, a holder, an actuator module, a sensing module, a lower computer and an upper computer. The lower computer comprises a receiving module, a decision module, a distribution module and a motion control module; the upper computer comprises a laser radar navigation module and an image recognition processing module; the decision-making module is used for performing corresponding processing on the received data fusion robot according to the situation faced by the robot; and the distribution module is used for directly sending the received sensing data of the sensing module and the data of the judgment system to the laser radar navigation module and the image recognition processing module. According to the scheme, through multi-sensor fusion and a low-computing-power control system, a complex environment can be sensed more comprehensively, low-delay image processing and path planning are achieved, multiple independent and mutually decoupled modules are integrated, and high expansibility and stability are achieved.

The present invention provides a method for preparing monascus cheese, which includes improving a preparation apparatus, optimizing a ripening environment, and optimizing the quality of cheese. Compared with the prior art, the monascus cheese produced by the present invention has a shorter ripening period, the problem that monascus is easily contaminated by fungi such as penicillium is solved without additives, the problem that soft / semi-soft monascus cheese is prone to produce unpleasant and irritating taste and odor is improved, the production cost is saved, and the turnover rate of the production enterprise is improved.

The invention discloses a thin-wall three-period minimal curved surface lattice structure laser additive manufacturing method, which relates to the field of additive manufacturing, and comprises the following steps: (1) according to a three-period minimal curved surface implicit function and additive manufacturing layer thickness, obtaining a single-channel contour path of each layer through direct slicing; (2) generating parallel filling lines in each layer, and intersecting the parallel filling lines with the combination of the contour paths of the layer and the higher layer; (3) combining every two intersection points to form a line segment, and taking the line segment as a filling path if sampling points of the line segment meet the conditions of a functional expression, an inclination angle and a length; (4) taking the filling path of the layer as a supporting layer, and moving the filling path upwards by one layer to form a filling layer; and (5) all the paths are input into additive manufacturing equipment, and different machining parameters are set for manufacturing. The laser path of the thin-wall three-period minimal curved surface lattice structure can be efficiently generated, only one melting channel is contained in the thickness direction of the structure, the wall thickness is smaller than 200 micrometers, and the cavity defect generated in the slicing process can be overcome.

The invention discloses a metal plate defect imaging method based on laser ultrasound and surface wave number filtering analysis, and aims to position defect positions and invert defect shapes by using metal plate surface wave echoes. The position of detection light of a laser vibration meter is determined on the surface of a fixed metal plate, and multiple groups of ultrasonic data are obtained by performing field scanning on the surface of the same side of the metal plate through a field scanning system. Performing wavelet transform on the obtained surface wave data to remove a low-frequency component in the signal, and performing Fourier transform on a time component to obtain a frequency spectrum; and then extracting signal data of a specific frequency and carrying out two-dimensional Fourier transform to obtain a wave number spectrum. And finally, filtering and inverse Fourier transform are carried out on the wave number spectrum to obtain a defect image, and defect positioning and defect shape imaging are realized.

The present invention relates to a method for establishing a topological structure of a multi-layer low-orbit giant constellation, comprising: S100, for any two satellites in the multi-layer low-orbit giant constellation, which are respectively a first satellite and a second satellite, calculating whether the first satellite and the second satellite meet the topological relationship establishment rule; S200, when the first satellite and the second satellite meet the topological relationship establishment rule, establishing a topological relationship between the first satellite and the second satellite; S300, repeating steps S100 to S200 until a topological relationship is established between any two satellites in the multi-layer low-orbit giant constellation that meet the topological relationship establishment rule; wherein the topological relationship establishment rule is: when the orbital plane angle between the first orbital plane of the first satellite and the second orbital plane of the second satellite is less than a threshold angle, the topological relationship establishment rule is met. Thus, while ensuring the stability of the topological structure of the giant constellation, the scale and time of topological structure calculation are greatly reduced.

The invention discloses a pavement water damage and anti-permeability performance simulation test device, and belongs to the field of pavement performance test. A pavement water damage and anti-permeability performance simulation test device comprises a test board, the top of the test board is fixedly connected with a mounting rack, the top of the test board is provided with a liquid collecting tank, the test device further comprises a reciprocating screw rod, the reciprocating screw rod is rotatably connected between the inner walls of the two sides of the mounting rack, and the reciprocating screw rod is sleeved with a moving plate in a threaded mode. The top of the moving plate and the bottom of the mounting frame slide in an attached mode, the bottom of the moving plate is provided with a rolling part and a spraying assembly, the rolling part is used for conducting pressure simulation on the road surface, and the spraying assembly is arranged on the mounting frame and used for conducting a water flow scouring simulation test on the road surface; through the arrangement of the rolling roller, the vibration plate, the water spraying box and other structures, rolling, water spraying and vibration effects are generated on the surface of the pavement sample, so that the real pavement condition is simulated, and the accuracy of the test result is improved.

The utility model provides a standardized cupboard system which comprises a standard kitchen cabinet, a standard cupboard module is arranged on one side of the standard kitchen cabinet, and a standard cupboard is arranged on the other side of the standard kitchen cabinet; a standard stove cabinet table is arranged on the top wall of the standard stove cabinet, a standard cabinet table is arranged on the top wall of each standard cabinet module, and a standard cabinet table is arranged on the top wall of each standard cabinet; vertical standard supporting tables are arranged above the two side edges of the standard kitchen range table, and a U-shaped structure is formed among the standard cupboard table, the standard kitchen range table, the vertical standard supporting tables and the standard cupboard table. The top wall of the standard cupboard module is flush with the top wall of the standard cupboard and is higher than the top wall of the standard kitchen cabinet, so that the height of operations such as vegetable cutting can be met, and the height of cooking operation can also be met; all parts can be standardized, the adaptive standard cabinet module is selected according to the actual size of a kitchen, the cabinet body installation efficiency is improved, the waiting period of a user is shortened, and the problem that an existing cabinet is long in customization period is solved.

The utility model discloses a double eccentric arc surface processing and polishing device of a contact type backstop, which relates to the technical field of processing and polishing devices and comprises a working base station, two longitudinal positioning plates are mounted on the working base station along the length direction of the working base station, two transverse sliding frames are arranged on the working base station along the width direction of the working base station, and polishing rolling shafts are arranged in the transverse sliding frames. Workpiece bodies are arranged between the two longitudinal positioning plates, the length of the polishing rolling shaft is matched with the length of the workpiece bodies, and eccentric blocks are arranged between the longitudinal positioning plates and the workpiece bodies. Aiming at the grinding process of the special-shaped wedge block in the contact type backstop, the whole process only comprises a single rotating process, the rotating center of the special-shaped wedge block takes one circle center point in the special-shaped wedge block as a rotating point, and then the two groups of grinding rolling shafts are matched with the rotating process in a motion form; the method specifically comprises a static linear motion mode and a dynamic linear motion mode, and aims to simplify the polishing process and shorten the consumed time in the single polishing process.

The invention discloses a transformer substation inspection path two-stage planning method based on an improved gold washing algorithm, and belongs to the technical field of transformer substation operation maintenance, and the method comprises the steps: constructing the improved gold washing algorithm based on the free exploration behavior of a gold washing person and based on a convergence factor in a cosine form; constructing a multi-team travel model and a single-team travel model based on the multiple patrol scenes; respectively optimizing the multi-team travel model and the single-team travel model based on the improved gold washing algorithm, and screening out a reference travel model; and carrying out travel mode optimization on each route of the reference travel model, and screening out an optimal inspection path of the transformer substation. After the free exploration behavior and the convergence factor based on the cosine form are introduced, the earlier-stage search efficiency of the gold washing algorithm is improved, and the global optimization ability is improved to a certain extent.

The invention provides an online optimal guidance method and device based on secondary rectification and electronic equipment, and the method comprises the steps: converting a first optimal control problem containing a process constraint into a second optimal control problem not containing the process constraint, solving the second optimal control problem through a model prediction static planning method, and solving the second optimal control problem through a model prediction static planning method. According to the method, a control quantity updating equation of an analysis iteration form is obtained, iteration correction is performed on a control quantity guess value based on the control quantity updating equation, an optimal guidance instruction is obtained, namely, a general solving algorithm with the analysis iteration form is realized, the form is simple, the time consumption of single iteration is extremely low, the total time consumption is relatively low, and the solving efficiency is greatly improved; and the first optimal control problem containing the process constraint is converted into the second optimal control problem without the process constraint, so that the solving accuracy is improved in a mode of solving the second optimal control problem through the model prediction static planning method, and the universality is good.

The invention relates to the technical field of electric power inspection and maintenance robot control, and discloses a power transmission line crawling robot lifting self-adaptive shake suppression control method and system. The method comprises the following steps: acquiring three-axis acceleration and three-axis angular velocity data of a robot platform, calculating a yaw angle and an angular velocity of the robot platform relative to a vertical balance position, and constructing an evaluation index representing the shaking strength of the platform; according to the shake strength evaluation index, driving parameters of a lifting motor are dynamically adjusted through a nonlinear mapping relation; and the swing period and phase of the robot platform are monitored, and when the platform swings to a specific phase point, an instantaneous driving pulse is applied to a lifting motor to consume swing energy. By means of the method, the maximum swing angle of the robot platform can be reduced by 60% or above, the static time after the robot platform reaches the target position is shortened by 70% or above, and the working efficiency is remarkably improved.

The invention discloses a continuous printing and wet printing digital printing machine which comprises a machine frame, a driving roller and a driven roller are installed at the two ends of the machine frame, a guide belt is connected between the driving roller and the driven roller, a pressing roller and a pressing seepage part are arranged on the two sides above the guide belt, and a sizing part and an X-direction moving linear motor guide rail are arranged between the pressing roller and the pressing seepage part. A Y-direction lead screw is arranged at the bottom of the X-direction moving linear motor guide rail, a trolley Z-direction lead screw is arranged on the side of the X-direction moving linear motor guide rail, a printing trolley is connected to the trolley Z-direction lead screw, and an ink scraping mechanism and a moisturizing mechanism are arranged on the front portion, away from the printing trolley, of the rack. The method has the advantages that the technological process is simplified, indentations are reduced, the delivery time is shortened, and cost is saved.

The utility model discloses a novel color printing film applied to a membrane switch panel, which comprises a protective layer, an adhesive layer, a second functional coating, a color pattern printing layer, a first functional coating and a printing material layer, the protective layer, the adhesive layer, the second functional coating layer, the colored pattern printing layer, the first functional coating layer and the printing material layer are sequentially arranged from top to bottom. By adopting the digital printing technology, the color printing effect of the color pattern printing layer can be achieved through the one-time transfer printing technology, registration printing is avoided, the printing technology is simplified, the product delivery time is shortened, the production cost is reduced, the color pattern printing layer solves the original problem that the color is single, the effect is more vivid, and the product quality is improved. And use requirements are met.

This invention provides a conflict-aware transactional reconstruction method and apparatus for vehicular networks, belonging to the field of vehicular network configuration and scheduling control technology. It solves problems such as multi-node time slot conflicts, cross-device submission asynchrony, and inability to quickly roll back after update failures in existing vehicular network transactional reconstruction processes. The method includes: upon receiving a reconstruction request, generating a set of scheduling update operations based on the reconstruction request and the latest scheduling status table of each device node in the vehicular network; establishing a conflict graph and a dependency graph based on the scheduling update operation set; determining a set of transaction execution layers and the corresponding hierarchical execution sets for each transaction execution layer based on the conflict graph and dependency graph; and performing transactional reconstruction on each device node based on the set of transaction execution layers and the corresponding hierarchical execution sets, including differential patch pre-writing, atomic pointer switching triggered by a unified timestamp, and distributed consistency monitoring.

The invention discloses a portable car coupler reconnection simulation test device and a control method, a main control module in the device is internally provided with control logic in a test process, and the main control module comprises a priority hierarchical scheduling mechanism, a dual mutual exclusion lock mechanism and a state real-time synchronization mechanism. The control method comprises the following steps: configuring a GPIO (General Purpose Input / Output) interface, UART communication and a mutual exclusion lock of the main control module; triggering an operation instruction based on the instruction interaction module, and performing priority division on the triggered operation instruction; based on the double interlocking safety state, performing mutual exclusion judgment on an operation instruction being executed; constructing a real state mirror image, and synchronously updating the physical control point and the virtual control point which are subjected to state change; input acquisition and output control of reconnection train level signals are executed based on the acquisition output module, and state information display is synchronously performed on the HMI serial port screen module. The device is portable, easy to use and low in operation threshold, and the efficient and safe debugging requirements of the rail transit vehicle are comprehensively met.

This invention discloses Ni2Fe(SO4) 0.5 (OH)6(H2O) 3.85 This paper discusses / NF catalysts, their preparation methods, and applications, belonging to the field of catalyst synthesis technology. Using large-size nickel foam as a substrate, Ni₂Fe(SO₄) is directly prepared through one-step in-situ microwave-driven growth. 0.5 (OH)6(H2O) 3.85 The nanosheet array eliminates the need for subsequent loading or additional processing, simplifying the process and enhancing the bond between the catalyst and the substrate. This catalyst exhibits excellent performance in hydrogen production via water electrolysis, particularly in seawater electrolysis.

The present invention relates to a buffer device for a bar steel dropping machine and a buffer method thereof, and belongs to the technical field of small bar steel rolling finishing in the metallurgical industry. The technical solution is: a pair of retaining fingers are arranged in a U-shaped collecting trough (26) and located at the upper part of the U-shaped collecting trough (26): a left retaining finger (6) and a right retaining finger (7), wherein the left retaining finger (6) and the right retaining finger (7) are long strips, and one end of the left retaining finger (6) and the right retaining finger (7) are respectively rotatably connected to the two corresponding side walls of the U-shaped collecting trough (26), and the other end of the left retaining finger (6) and the right retaining finger (7) are respectively connected to the piston rod of the retaining finger driving cylinder (9). The beneficial effects of the present invention are: reducing the drop of the bar, and preventing the bar from bending excessively, bumping and scratching due to the crossing and winding of the bar during the collection process.

The application provides a steel structure calculation scheduling method and system based on dependency coding, and relates to the technical field of building engineering structure calculation and information processing. The calc_dependency and knowledge_code fields are extended on the basis of the standard MCP protocol, which are used for coding the data dependency, state dependency and trigger dependency relationship between calculation functions, and binding the corresponding specification clauses. The dependency relationship is analyzed to construct a directed acyclic graph, the dynamic priority combining in-degree and depth is calculated, the nodes without dependency are executed in parallel, the nodes with dependency are executed in series and the data is transmitted. The calculation results are checked in two dimensions through the specification review and logical consistency review driven by the knowledge base, and when the check fails, the feedback correction mechanism is formed by automatically searching for correction suggestions. Through the Prompt engineering injection protocol rule, the LLM can generate standard messages without retraining, and the automatic scheduling and compliance guarantee of the steel structure multi-function collaborative calculation are realized.

This invention belongs to the field of structural optimization design, and specifically discloses a topology optimization method and system for accurately and efficiently controlling structural deformation characteristics. The method includes: performing finite element mesh generation on the structure to be optimized, which exhibits spring deformation characteristics, and defining design variables corresponding to the mesh; determining the total strain energy constraint of the structure based on the spring constant and maximum deformation, and establishing a first topology optimization model with the goal of minimizing the total structural volume; performing topology optimization based on the first topology optimization model to obtain the structural configuration and its total volume; setting an upper limit for the total structural volume constraint based on this total volume to construct the total structural volume constraint, while simultaneously using the total strain energy constraint of the first topology optimization model, and establishing a second topology optimization model with the goal of minimizing the p-norm of the local deformation error under external force; and performing topology optimization based on the second topology optimization model to obtain the final structural configuration. This invention is highly versatile, functionally diverse, and precise and efficient.

The utility model discloses a current sampling circuit with a protection trigger function, which relates to the technical field of current sampling circuits, and comprises an inversion module, a load module, a current analog signal sampling module and a chip Core module, the inversion module is connected with the load module and supplies power to the load module; the current analog signal sampling module is connected with the inversion module, and the current analog signal sampling module is used for carrying out current signal sampling on each phase of current after inversion, filtering the sampled current signals after isolation and amplification, and transmitting the filtered current signals to the chip Core module; and the chip Core module is used for processing the received current signal and then displaying the processed current signal on a display terminal or executing an overcurrent protection action, so that the problems that the time for executing the protection action is prolonged and the device cost is increased due to the fact that an existing current sampling circuit needs a comparison and judgment circuit are solved.

The utility model discloses a batch test tool for testing the performance of an angular displacement sensor, which comprises supporting columns, a driving seat, a driving motor, a driving gear, a driven gear, a mounting plate and a compression bolt, the driving seat is mounted at the upper parts of a plurality of supporting columns, and a shaft of the driving motor is connected with the driving gear through a shaft sleeve; the multiple driven gears are connected with the multiple connecting shafts respectively, the shaft sleeve and the connecting shafts are connected with the driving base through bearings respectively, the multiple driven gears are connected with the driving gear in a meshed mode respectively, positioning holes are formed in the middles of the upper faces of the driven gears, multiple installation sinking grooves are formed in the upper face of the installation plate, and sinking groove through holes are formed in the middles of the bottoms of the installation sinking grooves. The plurality of sinking groove through holes are respectively positioned above the plurality of positioning holes, and the plurality of compression bolts are respectively mounted on the mounting plate. According to the utility model, the rotating shafts of a plurality of angular displacement sensors are driven to rotate at a time so as to realize batch testing, the testing efficiency is improved, and the testing cost is reduced.

This application discloses a method for dispensing samples and reagents, comprising: controlling a first element to perform a sample dispensing action, dispensing a sample to be tested into a reaction vessel, the sample dispensing action including at least a sample input action and a sample output action; while controlling the first element to perform the sample dispensing action, controlling a second element to perform a reagent dispensing action, dispensing a detection reagent into the reaction vessel, the reagent dispensing action including at least a reagent input action and a reagent output action; wherein the sample output action and the reagent output action are executed asynchronously. This method achieves parallel dispensing of samples and reagents, shortens the time consumed in the sample / reagent dispensing stage during sample detection, and improves the operating efficiency and sample detection speed of automated sample dispensing equipment.

This application discloses an application installation method and apparatus, belonging to the field of computer technology. The application installation method includes: receiving an installation instruction for a target application; responding to the installation instruction, receiving a first data stream sent by a server and creating a first session; writing the first data stream to a target directory according to the first session; and installing the target application after all its installation files have been written to the target directory; wherein the first data stream is the data stream corresponding to the installation files; the first session includes write permissions to the target directory; and the target directory is located in the internal storage space of a target electronic device.

The invention discloses a CNC automatic machining system and a control method, the CNC automatic machining system comprises an automatic feeding and discharging robot, a workpiece warehouse and a plurality of CNC machine tools, the workpiece warehouse is used for providing workpieces for the automatic feeding and discharging robot, and the automatic feeding and discharging robot is used for installing the workpieces for the CNC machine tools and taking down the workpieces from the CNC machine tools; the CNC machine tools comprise the first type of CNC machine tools and the second type of CNC machine tools, the first type of CNC machine tools are provided with first type tool magazines used for machining first workpieces, the second type of CNC machine tools are provided with second type tool magazines used for machining second workpieces, and tools of the first type tool magazines are not completely the same as tools of the second type tool magazines. The first type of CNC machine tool and the second type of CNC machine tool can machine workpieces of different types respectively, when special workpieces are machined, only the workpieces need to be installed on the CNC machine tool capable of machining the workpieces of the types to be machined, tools do not need to be replaced, and therefore the production and machining efficiency is improved, the delivery time is shortened, and the machining cost is saved.

The present application discloses a transparent film antenna and a method for manufacturing the same. The method comprises: providing a substrate substrate and a conductive substrate layered on the substrate substrate; performing laser controlled deep cutting on the conductive substrate to process the conductive substrate into an antenna pattern layer having a plurality of grooves, wherein the grooves define the routing distance of the antenna pattern layer, and the portion between two adjacent grooves forms the routing of the antenna pattern layer; covering the antenna pattern layer with a transparent substrate, and the transparent substrate fills each groove; peeling off the substrate substrate, and the antenna pattern layer and the transparent substrate form a transparent film antenna. The present application does not require additional molds, can get rid of the dependence on high-precision imprinting molds, reduce costs and shorten delivery time; in addition, copper foil can be used in combination with laser controlled deep cutting process to manufacture the antenna pattern layer, with low material cost, small square resistance and good conductivity; and the laser controlled deep cutting process does not cut through the conductive substrate, which can prevent the transparent substrate from solidifying with the substrate substrate, and avoid the inability to peel off the substrate substrate.

The invention discloses a self-drilling anchor rod capable of achieving double-rotation-direction drilling and a manufacturing process thereof.The self-drilling anchor rod comprises an anchor rod body, and double-rotation-direction threaded sections are arranged at the two ends of the anchor rod body correspondingly; the right-handed threads rotate clockwise along the whole periphery of the two ends of the anchor rod body, the left-handed threads rotate anticlockwise along the whole periphery of the two ends of the anchor rod body, and the right-handed threads and the left-handed threads are machined independently, so that the right-handed threads and the left-handed threads are mutually crossed and overlapped. According to the self-drilling anchor rod, the large-diameter anchor rod and the small-diameter anchor rod can meet the adaptation of anchoring drilling machines with different thread rotating directions without distinguishing left-hand threads and right-hand threads, the universality of the self-drilling anchor rod is achieved, stock management of factories is facilitated, the delivery date of products is shortened, in addition, the self-drilling anchor rod meets the fastening performance of assembly connection, and the service life of the self-drilling anchor rod is prolonged. The stress can be uniformly dispersed and well transmitted, and the anchoring strength can be effectively improved.

The application relates to a distributed optical fiber sensing system and discloses a fast measurement BOTDA sensing device based on chaotic light polarization orthogonal detection, which comprises a narrow-line-width laser; signals output by the narrow-line-width laser are divided into two paths: one path is used as injection light to enter a chaotic light generation module to make the module output chaotic light with a wide spectrum, the chaotic light is used as detection light and sequentially connected with one end of a sensing optical fiber after passing through an optical isolator, an electro-optic modulator, a polarization maintaining optical fiber and an erbium-doped fiber amplifier; the other path is used as pump light and sequentially connected with the other end of the sensing optical fiber after passing through a semiconductor optical amplifier and a first circulator; after polarization orthogonal detection light is transmitted to the other end of the sensing optical fiber, the polarization orthogonal detection light is output through a first circulator output end and is coherently detected and data processed by a coherent detection module to obtain a Brillouin gain spectrum of the sensing optical fiber along a line. The application can realize Brillouin gain sweep-free measurement and improve the measurement speed.

The invention relates to the technical field of automatic drawing, in particular to a method and system for automatically generating AutoCAD drawings of chemical equipment, and the method comprises the steps: a data input part which comprises the input of design data and the strength check calculation data; drawing components, including which components of the drawing are determined, and the positions of all the components are determined; the drawing code generation part is used for generating codes of all the parts according to the structural data and the position data of all the drawing components and by combining national standards, industrial standards and enterprise regulations related to chemical drawing; in the drawing part, an AutoCAD secondary development program is automatically operated, codes generated by the drawing code generation part are read in, and a complete drawing is automatically generated and stored; in the drawing modification part, if the engineering project is a new engineering project, parameters in the engineering project can be directly modified by selecting an engineering project of a similar type; if the engineering project is a completed engineering project, the AutoCAD can be opened for modification; and the drawing database is a link of each part. Manual drawing is replaced by automatic drawing of the chemical equipment drawing, the drawing drawing workload is reduced, and the drawing drawing period is shortened.