3DEXP platform modeling method based on manhole cover two-dimensional arrangement diagram

Abstract

The invention provides a 3DEXP platform modeling method based on a manhole cover two-dimensional arrangement diagram. According to the technical scheme, the method comprises the following steps that firstly, the information requirement of a 3DEXP platform for manhole cover model arrangement is analyzed, the manhole cover specification standard and the corresponding model specification are determined, and a model library is established in a three-dimensional software platform; then, manhole cover positioning information is read from the two-dimensional arrangement diagram, the manhole cover positioning information is determined one by one in the drawing process of the manhole cover two-dimensional arrangement diagram, dynamic blocks are arranged on the manhole covers in the two-dimensional manhole cover arrangement diagram, and corresponding positioning information is set through adjustable attribute blocks, read and transmitted to a three-dimensional software platform. According to the method, the manhole cover is taken as a target, manhole cover three-dimensional modeling based on the 3DEXP platform is driven through the manhole cover two-dimensional arrangement diagram, the modeling efficiency is improved, the uniqueness of a data source is realized, and human errors are avoided.

Description

Technical Field

[0001] The present application belongs to the field of ship technology, and in particular relates to a 3DEXP platform modeling method based on a two-dimensional layout diagram of a manhole cover. Background Art

[0002] The manhole cover configured in the ship is a device used to close the manhole on the ship deck. It is usually made of metal materials and has functions such as waterproof, fireproof and explosion-proof. The main function of the ship manhole cover is to prevent water from entering the interior of the ship and maintain the sealing of the deck. At the same time, it is easy to open in an emergency to facilitate personnel escape and rescue, and protect the normal operation of ship equipment and the safety of personnel on board.

[0003] As a professional outfitting part with a large number of models, manhole covers usually require a large workload to sort out their models and quantities. If the 3D model is arranged manually based on the 2D drawings, they need to be placed one by one manually, and the model inspection process also needs to switch back and forth between the 2D drawings and the 3D model, which causes great inconvenience to the design and is prone to operational errors, affecting the construction progress and delivery. Therefore, it is necessary to provide an efficient, convenient and accurate sorting method for the complicated number of manhole covers. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a 3DEXP platform modeling method based on a two-dimensional layout diagram of a manhole cover, so as to better solve the above-mentioned technical problems encountered in the design of ship drawings.

[0005] A 3DEXP platform modeling method based on a two-dimensional layout diagram of a manhole cover comprises at least the following steps:

[0006] S100: Classify the types and specifications of manhole covers, and edit the two-dimensional layout drawings of manhole covers of different types and specifications to form CAD adjustable blocks;

[0007] S200: setting an editable attribute block for the positioning information of the two-dimensional layout diagram of the manhole cover, and associating the two-dimensional layout diagram of the manhole cover with the type and specification of the manhole cover for subsequent information reading;

[0008] S300: merging the CAD adjustable block and the editable attribute block of the manhole cover, and assigning the rotation of the manhole cover with a rotatable attribute, so as to obtain the model specification and positioning information of the manhole cover that can be read;

[0009] S400: The manhole cover model is set in the manhole cover model library of the 3DEXP platform, and the manhole cover model name in the manhole cover model library is consistent with the manhole cover specification name of the editable attribute block of the corresponding manhole cover two-dimensional layout diagram;

[0010] S500: forming a two-dimensional layout diagram of the manhole cover based on the CAD adjustable blocks and editable attribute blocks of the manhole cover, extracting the model specifications and positioning information of the manhole cover in the two-dimensional layout diagram of the manhole cover, and forming a manhole cover information table;

[0011] S600: Based on the two-dimensional layout diagram of the manhole cover, the model specification and positioning information of the manhole cover are read and written into an information table to obtain an operation workbook;

[0012] S700: Based on the model specifications and positioning information of the manhole cover, the required parameters are extracted and imported into the 3DEXP manhole cover operation workbook to complete the model layout of the manhole cover.

[0013] In an optional implementation, in step S100, the naming elements of the manhole cover classification include the manhole cover type code, the manhole cover specification and the manhole cover plate thickness.

[0014] In an optional implementation, in step S200, during the process of forming a CAD adjustable block, manhole covers of the same type but with different physical parameters are set as a dynamic block, and visibility selection is performed according to the required physical parameters to complete the two-dimensional plane layout of the manhole cover. At the same time, the current visibility status of the dynamic block and the type and specifications of the manhole cover are read to associate the two-dimensional layout drawing of the manhole cover with the specification model of the manhole cover.

[0015] In an optional implementation manner, the physical parameters include: specifications of the manhole cover, thickness of the manhole cover plate, and sealing material of the manhole cover.

[0016] In an optional implementation, in step S300, the positioning information and orientation information of the manhole cover are determined by setting an adjustable attribute block of CAD, wherein the adjustable attribute block includes rib position marks of the manhole cover, spatial positioning XYZ coordinate parameters required for manhole cover modeling, and long axis orientation required for manhole cover modeling, so as to arrange the manhole cover modeling based on the coordinates of the entire ship.

[0017] In an optional implementation, in step S400, a two-dimensional layout diagram of the manhole cover is formed based on the manhole cover dynamic block and the adjustable attribute block, which includes the manhole cover type, specification, sealing, positioning information and long axis orientation information, and based on the above information, three-dimensional modeling of the manhole cover is performed through the manhole cover model library.

[0018] In an optional implementation, in step S500, the name of the manhole cover in the manhole cover model library includes the corresponding specifications, manhole cover models, and specifications, and is kept consistent with the name of the manhole cover dynamic block in the manhole cover two-dimensional plan view. The manhole cover model library and the manhole cover information table are set based on the 3DEXP platform, thereby realizing the retrieval function for the manhole covers in the model library after data extraction.

[0019] In an optional implementation, in step S700, the manhole cover model is arranged by selecting the model according to the extracted manhole cover specification and model, and then positioning and arranging it according to the extracted positioning coordinates, and finally determining the layout direction of the manhole cover according to the direction of the long axis in the positioning information, thereby completing the model layout of the manhole cover.

[0020] In an optional implementation manner, it also includes:

[0021] S800: After completing the model layout of the manhole cover, the model and number of the manhole cover are extracted into a table and compared with the two-dimensional layout diagram of the manhole cover to ensure the integrity of the number and specifications of the manhole cover model.

[0022] Compared with the prior art, the technical solution provided by this application has the following beneficial effects:

[0023] The technical solution provided in this application is based on the 3DEXP platform modeling of the two-dimensional layout diagram of the manhole cover, and applies two-dimensional driven three-dimensional modeling to meet the needs from detailed design to production design, and realizes intelligent modeling of components. In addition, through two-dimensional driven three-dimensional modeling, the uniqueness of the data source from top to bottom is achieved, ensuring that the data is unified and without deviation, thereby greatly improving the work efficiency of drawing design reviewers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A method step diagram showing the technical solution provided by this application;

[0025] Figure 2 Displays a table of commonly used manhole cover types and specifications;

[0026] Figure 3 Shown is an example of a dynamic block for a manhole cover plane;

[0027] Figure 4 Shown is an example diagram of a manhole cover location information attribute block;

[0028] Figure 5 Displays a library of manhole cover models;

[0029] Figure 6 Displays the automatic layout table for manhole covers. DETAILED DESCRIPTION

[0030] In the prior art, the drawings currently submitted for review and delivered are still mainly two-dimensional drawings, but most production designs in the industry have already implemented three-dimensional design software. Therefore, it is necessary to consider the method of driving three-dimensional modeling with two-dimensional drawings to improve the efficiency and accuracy of three-dimensional production design modeling. Since different drawing design elements have different design principles, the implementation methods of two-dimensional driving three-dimensional are also different. Therefore, this application takes manhole covers as the target, and realizes the three-dimensional modeling of manhole covers based on the 3DEXP platform driven by the two-dimensional layout of manhole covers, which improves the modeling efficiency while realizing the uniqueness of the data source and avoiding human errors.

[0031] The following describes the implementation methods of the present application through specific examples. Those skilled in the art can easily understand other advantages and principles of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this patent, so they have no substantial technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by this patent, should still fall within the scope of the technical content disclosed by this patent. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this patent. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of this patent without substantial change in the technical content.

[0033] This embodiment provides a 3DEXP platform modeling method based on a two-dimensional layout diagram of manhole covers. The two-dimensional layout diagram of manhole covers mainly includes the specifications and standards of manhole covers and the corresponding model specification information, manhole cover positioning information, manhole cover opening size, etc. Most ship types have a large number of manhole covers. For example, the number of manhole covers on a 14,000TEU container ship can reach more than 400. The sorting of manhole cover models and positioning information is a large workload. If the information sorted out in the two-dimensional layout diagram can be accurately inherited in the three-dimensional software, it is bound to be possible to achieve the effect of unifying the drawing model by only maintaining the information of the two-dimensional layout diagram, and improve the efficiency and accuracy of model building.

[0034] For a large number of ship manhole covers, if the specifications and models are sorted out again during the 3D modeling process, errors due to human factors are inevitable. Therefore, based on the above, it is necessary to study how to realize the rapid manhole cover model layout in the 3DEXP platform according to the 2D layout diagram of the manhole cover.

[0035] First, the information requirements for manhole cover model layout on the 3DEXP platform are analyzed. The manhole cover specifications and corresponding model specifications need to be determined. This is achieved by establishing a model library in the 3D software platform. Secondly, the manhole cover positioning information needs to be read from the 2D layout drawing. The 2D layout drawing of the manhole cover will determine the positioning information of the manhole cover one by one during the design process. Therefore, the manhole cover setting dynamic block and the corresponding positioning information in the 2D manhole cover layout drawing can be set and read through the block and passed to the 3D software platform to achieve this.

[0036] The following combination Figures 1 to 6 The 3DEXP platform modeling method provided in this embodiment is described in detail step by step.

[0037] S100: Classify the types and specifications of manhole covers, and edit the two-dimensional layout drawings of manhole covers of different types and specifications to form CAD adjustable blocks.

[0038] Specifically, see Figure 2 First, the commonly used manhole cover models and types are sorted out according to the ship manhole cover standards, which are used in the next step to organize and associate the plan drawings of different types of manhole covers with the corresponding specifications of each model. Figure 2 The display shows the types and specifications of manhole covers shown in the marine manhole cover standard CB / T 4392-2014, which includes 14 types, and each type includes 1 to 6 types and specifications of manhole covers. Due to the large number of types and specifications of manhole covers, considering the marking methods of different types and specifications, the marking method of manhole covers in CB / T 4392-2014 is referenced and set to a three-element naming method including manhole cover type code + manhole cover specification + manhole cover cover plate thickness. For example, a flat oblong manhole cover with a specification of 600X400 and a manhole cover cover plate thickness of 10mm can be marked as CB / T 4392-2014BA-600X400-10.

[0039] S200: Setting an editable attribute block for the positioning information of the two-dimensional layout diagram of the manhole cover, and associating the two-dimensional layout diagram of the manhole cover with the type and specification of the manhole cover for subsequent information reading.

[0040] Specifically, the two-dimensional layout diagram positioning information of common manhole covers is sorted out in editable attribute blocks, and the rationality of the combined layout of the two-dimensional layout and the manhole cover adjustable blocks is considered. The positioning information contained in the editable attribute blocks meets the needs of model layout, which is convenient for reading the manhole cover positioning information later. Figure 3Considering the two-dimensional layout of the manhole cover, different types of manhole covers need to be arranged in the deck structure background of each layer of the ship with manhole covers. Therefore, if the manhole cover plan and model specification marks are associated with each other, it will certainly be beneficial to read the specifications and models according to each manhole cover plan in the later stage. Therefore, by using the visibility set function of the CAD dynamic block, the manhole covers of the same type with different physical parameters are set as a dynamic block, and the visibility is selected according to the required physical parameters to complete the two-dimensional plane layout of the manhole cover. At the same time, the current visibility status of the dynamic block and the type and specifications of the manhole cover are read to associate the two-dimensional layout of the manhole cover with the specifications and models of the manhole cover. Furthermore, the physical parameters include: the specifications of the manhole cover, the thickness of the manhole cover plate, and the sealing material of the manhole cover. Continue to see Figure 3 , the three commonly used manhole cover types with enclosure, flat type and embedded type and the commonly used specifications of 600x400 with different plate thicknesses are made into three types of manhole cover dynamic blocks considering the difference between watertightness and oiltightness of manhole covers. Here, the same type of manhole covers with different specifications, different plate thicknesses and different sealing materials can be made into the same dynamic block. In this way, when arranging the manhole covers in two-dimensional plane, when a certain type of manhole cover is required, you only need to copy this type of manhole cover dynamic block, and then select the visibility according to the required specifications and sealing type to complete the layout. At the same time, you can adjust the current visibility status and Figure 3 The manhole cover type and specification markings shown are read, that is, the two-dimensional layout of the manhole cover and the specification model of each manhole cover are associated and synchronized, laying a good foundation for the next step of reading and modeling.

[0041] S300: merging the CAD adjustable block and the editable attribute block of the manhole cover, and assigning the rotation of the manhole cover with a rotatable attribute, so as to obtain the model specification and positioning information of the manhole cover that can be read.

[0042] Specifically, after the association between the two-dimensional layout and the model of the manhole cover is completed in step S200, the manhole cover modeling needs to determine the positioning and orientation of the manhole cover in addition to the model specifications. This is achieved by using the adjustable attribute block of CAD, and the adjustable attribute is named manhole cover positioning. Then, the rib position marks that are often required for the two-dimensional layout of the manhole cover, the spatial positioning XYZ coordinate parameters required for manhole cover modeling, and the long axis orientation required for manhole cover modeling are set, so that the manhole cover modeling and layout can be accurately performed based on the coordinates of the entire ship, such as Figure 4The figure shows an adjustable attribute block that can contain the positioning information of the manhole cover, and the red cross in the figure indicates the center of the manhole cover. When the manhole cover is arranged in the two-dimensional layout diagram of the manhole cover, it can be arranged one by one in combination with the visible dynamic blocks of the manhole cover in step S200, and the positioning information of each manhole cover is determined and input in the attribute block. In this way, in the design process of the two-dimensional layout diagram of the manhole cover, the input of the positioning information of each manhole cover is completed, and the positioning information of the manhole cover can be obtained by reading the adjustable attribute block later.

[0043] S400: The manhole cover model is set in the manhole cover model library of the 3DEXP platform, and the manhole cover model name in the manhole cover model library is consistent with the manhole cover specification name of the editable attribute block of the corresponding manhole cover two-dimensional layout diagram.

[0044] Specifically, the manhole cover dynamic block and adjustable attribute block formed according to the above steps are used to make a two-dimensional layout diagram of the manhole cover, which contains the manhole cover type, specification, sealing, positioning information and long axis orientation information. Based on the above information, the manhole cover three-dimensional selection layout modeling can be accurately performed through the manhole cover equipment model library. Use a suitable programming language to read the above dynamic block attribute information, and extract the serial number of the manhole cover in the manhole cover plan layout diagram and its corresponding specification model and positioning information. For example, the VBA selection primitive program can select to read the attribute. The VBA selection CAD primitive code example is as follows:

[0045] Public Sub demo()

[0046] Dim objEntity As AcadEntity

[0047] Dim ptpicked As Variant

[0048] ThisDrawing.Utility.GetEntity.objEntity,ptpicked,"selected"

[0049] MsgBox objEntity.EntityName

[0050] End Sub

[0051] After the manhole cover information is extracted, it is written into a formatted Excel table to prepare for the next step of 3D modeling of the manhole cover. The Excel table that needs to be written here should be consistent with the Excel template imported for 3D manhole cover modeling.

[0052] S500: forming a two-dimensional layout diagram of the manhole cover based on the CAD adjustable blocks and editable attribute blocks of the manhole cover, extracting the model specifications and positioning information of the manhole cover in the two-dimensional layout diagram of the manhole cover, and forming a manhole cover information table.

[0053] Specifically, a manhole cover equipment model library and an automatic layout module based on an Excel table are set up based on the 3DEXP platform. The manhole cover model library is as follows: Figure 5 As shown, the table for automatically arranging manhole covers based on Excel is as follows Figure 6 As shown, the name of the manhole cover in the manhole cover equipment model library should include its corresponding standard, manhole cover model, and specification, and should be consistent with the name of the manhole cover dynamic block in the aforementioned manhole cover two-dimensional plan layout diagram, so that the retrieval function can be realized for the manhole covers in the model library after data extraction.

[0054] S600: Based on the two-dimensional layout diagram of the manhole cover, the model specification and positioning information of the manhole cover are read and written into an information table to obtain an operation workbook.

[0055] Specifically, the manhole cover specifications, models, positioning and other information extracted from the plan layout completed by the dynamic block are written into the manhole cover model and imported into the Excel table. The writing method can be based on the program calling the Excel template. The writing program is shown as follows:

[0056] import xlrd xlwt

[0057] ws = xlrd.open_workbook('workbook name.xls').sheet_by_name('worksheet name')

[0058] nws.write(1,2,'Information to be written')

[0059] nwb.save('workbook.xls')

[0060] The second line of the program opens the template Excel and then writes information to it. The numbers in the third line are the cell row and column information. Here, you can use a loop to loop and write to the specified row or column. Finally, save the operation workbook as the information table for the manhole cover model import.

[0061] S700: Based on the model specifications and positioning information of the manhole cover, the required parameters are extracted and imported into the 3DEXP manhole cover operation workbook to complete the model layout of the manhole cover.

[0062] Specifically, according to step S600, data is extracted according to the two-dimensional layout diagram of the manhole cover, and the Excel table of the completed information is updated to perform automatic model layout of the manhole cover. The layout method of the manhole cover model selects the model according to the extracted manhole cover specification and model, and then positions and arranges it according to the extracted positioning coordinates. Finally, the layout direction of the manhole cover is determined according to the direction of the long axis in the positioning information, thereby completing the model layout of the manhole cover. The main thing is that the serial number of the manhole cover that has been arranged must be consistent with the serial number of the two-dimensional manhole cover layout diagram to facilitate data inspection and comparison.

[0063] S800: After completing the model layout of the manhole cover according to step S700, the model and number of the manhole cover are parameter extracted to form a table, and compared with the two-dimensional layout diagram of the manhole cover to ensure the integrity of the number and specifications of the manhole cover model.

[0064] Specifically, after completing the model layout of the manhole cover, data extraction is performed in reverse. The specifications and positioning information of the model are extracted into an Excel table and compared with the final two-dimensional extracted table at any time to ensure the accuracy of the manhole cover model, specifications and positioning information and the consistency of the number of manhole covers.

[0065] In summary, the 3DEXP platform modeling method based on the two-dimensional layout of manhole covers provided by this application uses two-dimensional driven three-dimensional modeling to meet the needs from detailed design to production design, realize intelligent modeling of components, and through two-dimensional driven three-dimensional modeling, realizes the uniqueness of data sources from top to bottom, ensures that data is unified and without deviation, and greatly improves the work efficiency of drawing design reviewers. Therefore, this application effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A 3DEXP platform modeling method based on a two-dimensional layout diagram of a manhole cover, characterized in that: At least the following steps are included: S100: Classify the types and specifications of manhole covers, and edit the two-dimensional layout drawings of manhole covers of different types and specifications to form CAD adjustable blocks; S200: setting an editable attribute block for the positioning information of the two-dimensional layout diagram of the manhole cover, and associating the two-dimensional layout diagram of the manhole cover with the type and specification of the manhole cover for subsequent information reading; S300: merging the CAD adjustable block and the editable attribute block of the manhole cover, and assigning the rotation of the manhole cover with a rotatable attribute, so as to obtain the model specification and positioning information of the manhole cover that can be read; S400: The manhole cover model is set in the manhole cover model library of the 3DEXP platform, and the manhole cover model name in the manhole cover model library is consistent with the manhole cover specification name of the editable attribute block of the corresponding manhole cover two-dimensional layout diagram; S500: forming a two-dimensional layout diagram of the manhole cover based on the CAD adjustable blocks and editable attribute blocks of the manhole cover, extracting the model specifications and positioning information of the manhole cover in the two-dimensional layout diagram of the manhole cover, and forming a manhole cover information table; S600: Based on the two-dimensional layout diagram of the manhole cover, the model specification and positioning information of the manhole cover are read and written into an information table to obtain an operation workbook; S700: Based on the model specifications and positioning information of the manhole cover, the required parameters are extracted and imported into the 3DEXP manhole cover operation workbook to complete the model layout of the manhole cover.

2. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S100, the naming elements of the manhole cover classification include the manhole cover type code, the manhole cover specification and the manhole cover plate thickness.

3. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S200, during the process of forming a CAD adjustable block, manhole covers of the same type but with different physical parameters are set as a dynamic block, and visibility selection is performed according to the required physical parameters to complete the two-dimensional plane layout of the manhole cover. At the same time, the current visibility status of the dynamic block and the type and specifications of the manhole cover are read to associate the two-dimensional layout drawing of the manhole cover with the specification model of the manhole cover.

4. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 3 is characterized in that: The physical parameters include: the specifications of the manhole cover, the thickness of the manhole cover plate and the sealing material of the manhole cover.

5. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S300, the positioning information and orientation information of the manhole cover are determined by setting the adjustable attribute block of CAD. The adjustable attribute block includes the rib position mark of the manhole cover, the spatial positioning XYZ coordinate parameters required for manhole cover modeling, and the long axis orientation required for manhole cover modeling, so as to arrange the manhole cover modeling based on the coordinates of the entire ship.

6. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S400, a two-dimensional layout diagram of the manhole cover is formed based on the manhole cover dynamic block and the adjustable attribute block, which includes the manhole cover type, specification, sealing, positioning information and long axis orientation information. Based on the above information, the manhole cover is three-dimensionally modeled through the manhole cover model library.

7. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S500, the manhole cover name in the manhole cover model library includes the corresponding specification standards, manhole cover models, specifications, and is kept consistent with the name of the manhole cover dynamic block in the manhole cover two-dimensional plan layout diagram. The manhole cover model library and the manhole cover information table are set based on the 3DEXP platform, so that the manhole cover in the model library can be retrieved after data extraction.

8. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1 is characterized in that: In step S700, the layout of the manhole cover model is to select the model according to the extracted manhole cover specifications and models, and then locate and arrange it according to the extracted positioning coordinates, and finally determine the layout direction of the manhole cover according to the long axis direction in the positioning information, thereby completing the model layout of the manhole cover.

9. The 3DEXP platform modeling method based on the two-dimensional layout diagram of manhole covers according to claim 1, characterized in that: Also includes: S800: After completing the model layout of the manhole cover, the model and number of the manhole cover are extracted into a table and compared with the two-dimensional layout diagram of the manhole cover to ensure the integrity of the number and specifications of the manhole cover model.

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