Method and device for precision distribution design of ship section modular construction

Abstract

The application discloses a ship section modular construction precision distribution design method and device, and relates to the technical field of ship construction. The method comprises the following steps: determining a closed ring and a component ring according to a ship section modular construction process; establishing a size chain equation according to the closed ring and the component ring; determining a target size chain calculation strategy based on the number of the component ring and the construction process; solving the size chain equation according to the target size chain calculation strategy to obtain a preset component ring precision; and distributing assembly precision according to the preset component ring precision. By respectively establishing axial, transverse and vertical multidirectional closed ring precision distribution models, the difficulty in component ring precision distribution caused by the coupling relationship of the closed ring is systematically solved, the tolerance accumulation problem in the complex size chain of the ship is solved, the docking precision between the modules is significantly improved, and the ship section construction meets the design requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shipbuilding, in particular to a ship section modular construction precision allocation design method and device. BACKGROUND

[0002] Ship section modular construction is a technical mode of dividing a ship into multiple sections that can be independently constructed, and achieving efficient production through parallel manufacturing and integrated assembly. In the process of ship section modular construction, due to factors such as machining equipment precision and size chain length, the actual manufactured modules often deviate from the ideal design, causing multiple directional shifts of the module relative to the section structure during the section welding process, which in turn affects the precise assembly between modules and directly affects the overall quality and performance of the ship. Therefore, it is of great significance to allocate assembly precision in multiple directions before section modular construction, and to control the axial, lateral and vertical shifts of the modules within a reasonable range.

[0003] In the actual precision allocation process, technicians have realized that the head-to-tail multi-directional shift of the modules is common, but mainly control and predict the shift through engineering experience and forward solving of closed loops, resulting in unstable and inaccurate precision control. In the process of assembly precision allocation, as the modules are gradually spliced at different assembly stages, there are multiple levels of deviations such as positioning deviation, part manufacturing deviation and welding deviation, and the errors gradually accumulate under different process links, resulting in a large final assembly precision deviation. This problem not only affects the overall size and strength of the ship section, but also may cause structural deformation or fatigue problems, and in severe cases may even affect the navigation performance and safety of the ship. SUMMARY

[0004] The main purpose of the present application is to provide a ship section modular construction precision allocation design method and device, aiming to solve the technical problem of large assembly precision deviation affecting the overall size and strength of the ship section, and possibly causing structural deformation or fatigue.

[0005] To achieve the above purpose, the present application provides a ship section modular construction precision allocation design method, which comprises:

[0006] determining a closed loop and a component loop according to the ship section modular construction process flow;

[0007] establishing a size chain equation according to the closed loop and the component loop;

[0008] determining a target size chain calculation strategy based on the number of component loops and the construction process flow;

[0009] solving the size chain equation according to the target size chain calculation strategy to obtain a preset component loop precision.

[0010] The assembly precision is allocated according to the preset component ring precision.

[0011] In addition, to achieve the above-mentioned purpose, the application further provides a ship section module construction precision allocation device, which comprises:

[0012] A determination module is configured to determine a closed ring and component rings according to a ship section module construction process;

[0013] A building module is configured to build a dimension chain equation according to the closed ring and the component rings;

[0014] The determination module is further configured to determine a target dimension chain calculation strategy based on the number of the component rings and the construction process;

[0015] A solving module is configured to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring precision;

[0016] An allocation module is configured to allocate assembly precision according to the preset component ring precision.

[0017] In addition, to achieve the above-mentioned purpose, the application further provides a ship section module construction precision allocation device, which comprises:

[0018] In addition, to achieve the above-mentioned purpose, the application further provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program is executed by a processor to implement the steps of the ship section module multi-level assembly precision allocation method.

[0019] In addition, to achieve the above-mentioned purpose, the application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the ship section module multi-level assembly precision allocation method.

[0020] The one or more technical solutions provided by the application have at least the following technical effects:

[0021] 1) By defining the closed loop and the component loop, and establishing the size chain equation based on the construction process, the accuracy requirements of each assembly link can be accurately calculated, ensuring that the accuracy distribution of each link meets the overall assembly target, thereby achieving precise control of the ship section modular construction. According to the number of component loops and the construction process, the target size chain calculation strategy can be formulated to more reasonably arrange the accuracy distribution resources. By solving the size chain equation and obtaining the preset component loop accuracy, the manufacturing error of each link can be effectively predicted and controlled, avoiding the deviation caused by error accumulation in the final assembly, thereby improving the assembly accuracy and quality of the ship section. Through accurate size chain calculation and accuracy distribution, the problem of component loop accuracy distribution caused by the coupling relationship of closed loops is solved, the problem of tolerance accumulation in the complex size chain of the ship is solved, and the docking accuracy between modules is significantly improved, ensuring that the ship section construction meets the design requirements.

[0022] 2) Through the probability calculation strategy, the accuracy distribution of the axial closed loop can be accurately optimized under the influence of multiple variables, ensuring that each link in the ship section modular construction is within the optimal accuracy range. The reliability coefficient obtained by calculation helps to evaluate and enhance the reliability of the process, reduce potential risks in production, and improve production stability. By solving the deviation control target, error sources can be systematically analyzed and optimized to avoid error accumulation in the manufacturing process and improve the quality of the final product. It can be dynamically optimized according to the changes of different variables and conditions in the actual construction process, adapting to different production environments and needs.

[0023] 3) Through multiple calculations and feedback adjustments, the accuracy of the transverse closed loop is effectively controlled, ensuring that each link of the final product meets the design requirements. By introducing a second sensitivity analysis, the complex nonlinear relationship between variables can be effectively considered, providing more accurate basis for accuracy control. Combined with engineering experience and calculation strategy, the accuracy control is more in line with actual production conditions, avoiding deviations that may occur in purely theoretical calculations. Through multiple reverse feedback and adjustments, the deviation can be dynamically optimized to ensure that each variable in the assembly process is within a controllable range. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application together with the specification.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0026] Figure 1The flowchart provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0027] Figure 2 The schematic diagram of a certain type of shafting module structure provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0028] Figure 3 The schematic diagram of a certain type of shafting module X-axis direction component ring provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0029] Figure 4 The schematic diagram of a certain type of shafting module Y-axis direction component ring provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0030] Figure 5 The schematic diagram of the axis distribution provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0031] Figure 6 The schematic diagram of a certain type of shafting module vertical direction component ring provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0032] Figure 7 The schematic diagram of the precision multi-direction allocation process provided by the embodiment one of the ship section modularization construction precision allocation design method of the application;

[0033] Figure 8 The flowchart provided by the embodiment two of the ship section modularization construction precision allocation design method of the application;

[0034] Figure 9 The flowchart provided by the embodiment three of the ship section modularization construction precision allocation design method of the application;

[0035] Figure 10 The brief flowchart of the ship section modularization construction precision allocation design method provided by the embodiment two of the application.

[0036] Explanation of the reference signs:

[0037] Stern shaft 1, rear shaft 2, thrust shaft 3, front shaft 4, thrust bearing 5, clutch 6, power shaft 7.

[0038] The purpose implementation, functional features and advantages of the application will be further explained by combining the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the application, and are not used to limit the application.

[0040] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the drawings of the specification and specific embodiments.

[0041] The main solution of the embodiment of the present application is: determining a closed ring and a component ring according to a modular construction process of a ship section module; establishing a size chain equation according to the closed ring and the component ring; determining a target size chain calculation strategy based on the number of the component rings and the construction process; solving the size chain equation according to the target size chain calculation strategy to obtain a preset component ring precision; and distributing assembly precision according to the preset component ring precision.

[0042] Since the prior art mainly controls and predicts the offset by engineering experience and forward solving of the closed ring, the precision control is not stable and accurate enough. In the assembly precision distribution process, with the gradual splicing of the modules in different assembly stages, there are positioning deviations, part manufacturing deviations, welding deviations and other multi-level deviations, and the errors are gradually accumulated under different process links, resulting in a large final assembly precision deviation. This problem not only affects the overall size and strength of the ship section, but also may cause structural deformation or fatigue problems, and in severe cases, it may even affect the navigation performance and safety of the ship.

[0043] The present application provides a ship section modular construction precision distribution design method, which reasonably distributes the component rings through the size chain relationship, reversely solves the unknown component ring precision in the axial, transverse and vertical multidirectional size chain based on the extremum method and the probability method, and finally establishes the axial, transverse and vertical multidirectional closed ring precision distribution model to realize the distribution of the precision of all component rings.

[0044] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, assembly precision distribution of ship section modular construction, etc. The following will take the assembly precision distribution of ship section modular construction as an example to describe the embodiment and the following embodiments.

[0045] Embodiment one:

[0046] Based on this, the embodiment of the present application provides a ship section modular construction precision distribution design method, which refers to Figure 1 , Figure 1 The flowchart of the first embodiment of the ship section modular construction precision distribution design method of the present application.

[0047] In the embodiment, the ship section modular construction precision distribution design method includes steps S10-S50:

[0048] Step S10: determining the closed loop and the component loop according to the ship block modularization construction process.

[0049] It should be noted that when the ship block modularization construction is performed, the corresponding construction process can be acquired to determine the closed loop and the component loop. The construction process includes the parts for constructing each module and the control object, so as to determine the precision control object and the intermediate process deviation, thereby determining the closed loop and the component loop.

[0050] Specifically, according to the block butt joint process, the key items of the multi-directional precision distribution of the current process can be analyzed, including the manufacturing deviation, the butt joint assembly deviation, the welding deformation deviation, etc. The reference value and the up and down deviation value of each deviation in the axial, transverse and vertical directions of the ship are determined, and the deviation is regarded as each component loop.

[0051] The closed loop includes multi-directional closed loops such as the axial closed loop, the transverse closed loop and the vertical closed loop, and the component loop includes multi-directional component loops such as the axial component loop, the transverse component loop and the vertical component loop.

[0052] In an available implementation, step S10 can include steps A11-A18:

[0053] Step A11: determining a ship preset shafting module according to the ship block modularization construction process;

[0054] It should be noted that the specific requirements of the ship preset shafting module can be determined according to the process of the ship block modularization construction. The block modularization construction process divides the ship into multiple modules, each of which is constructed in the factory and then assembled. The shafting module refers to the preset module of different shafting parts in the ship.

[0055] As shown in FIG. 4, Figure 2 Figure 2 is a structural schematic diagram of a certain type of shafting module, which includes, from left to right, a stern shaft 1, an aft shaft 2, a thrust shaft 3, a fore shaft 4, a thrust bearing 5, a clutch 6 and a power shaft 7. The multi-directional offset of the selected module can be selected according to the specific requirements to determine the closed loop and the component loop, for example, the multi-directional offset of the end of the power shaft is used to determine the closed loop and the component loop.

[0056] Step A12: acquiring the axial offset, the transverse offset and the vertical offset of the ship preset shafting module;

[0057] In a specific implementation, the axial offset, the transverse offset and the vertical offset of the ship preset shafting module can be acquired, for example, the axial offset of the end of the power shaft, the transverse offset from the beginning of the stern shaft to the end of the power shaft and the vertical offset from the beginning of the stern shaft to the end of the power shaft are used as the axial offset, the transverse offset and the vertical offset respectively.

[0058] ​Step A13: According to the axial offset, an axial closed ring is obtained, according to the lateral offset, a lateral closed ring is obtained, and according to the vertical offset, a vertical closed ring is obtained;

[0059] It should be noted that the axial closed ring can be obtained according to the axial offset, that is, the axial offset of the power shaft end is the closed ring X, the lateral offset from the stern shaft end to the power shaft end is the closed ring Y, and the vertical offset from the stern shaft end to the power shaft end is the closed ring Z.

[0060] Step A14: Obtain the axial deviation of multiple variables of the axial closed ring to obtain an axial component ring;

[0061] In specific implementation, as shown in Figure 3 , Figure 3 is a schematic diagram of the axial component ring of a certain type of shafting module, and each axial component ring X i includes axial deviations of multiple variables, specifically including:

[0062] Positioning deviation x1 of the stern shaft reference point, length dimension deviation x2 of the stern shaft, component ring X1=x1+x2;

[0063] Axial deviation x3 of the rear shaft and the stern shaft assembly, length dimension deviation x4 of the rear shaft, component ring X2=x3+x4;

[0064] Axial deviation x5 of the thrust shaft and the rear shaft assembly, length dimension deviation x6 of the thrust shaft, component ring X3=x5+x6;

[0065] Axial deviation x7 of the thrust shaft and the front shaft assembly, length dimension deviation x8 of the front shaft, component ring X4=x7+x8;

[0066] Axial deviation x9 of the thrust bearing and the front shaft assembly, component ring X5=x9;

[0067] Axial deviation x 10 of the thrust bearing and the clutch assembly, component ring X6=x 10 ;

[0068] Axial deviation x 11 of the power shaft and the clutch assembly, length dimension deviation x 12 of the power shaft, component ring X7=x 11 +x 12 .

[0069] Step A15: Obtain the lateral deviation of multiple variables of the lateral closed ring to obtain a lateral component ring;

[0070] In specific implementation, as shown in Figure 4 , Figure 4 is a schematic diagram of the axial component ring of a certain type of shafting module, and each shaft itself may have a centering deflection, as shown inFigure 5 As shown, each transverse component ring Y i The transverse deviation includes a plurality of variables, specifically including:

[0071] The positioning deviation of the stern shaft reference point y1, the centering deviation of the stern shaft θ1, the offset of the stern shaft end caused by the deviation y2=1.8θ1, the component ring Y1=y1+y2, and the length of the stern shaft is 1800mm;

[0072] The transverse offset of the rear axle and the stern axle assembly y3, the centering deviation of the rear axle θ2, the offset of the rear axle end caused by the deviation y4=1.42(θ1+θ2), the component ring Y2=y3+y4, and the length of the rear axle is 1420mm;

[0073] The transverse offset of the thrust shaft and the rear axle assembly y5, the centering deviation of the thrust shaft θ3, the offset of the thrust shaft end caused by the deviation y6=3.5(θ1+θ2+θ3), the component ring Y3=y5+y6, and the length of the thrust shaft is 3500mm;

[0074] The transverse offset of the thrust shaft and the front axle assembly y7, the centering deviation of the front axle θ4, the offset of the front axle end caused by the deviation y8=4.8(θ1+θ2+θ3+θ4), the component ring Y4=y7+y8, and the length of the front axle is 4800mm;

[0075] The transverse offset of the thrust bearing and the front axle assembly y9, the offset of the thrust bearing end caused by the deviation y 10 =1.53(θ1+θ2+θ3+θ4), the component ring Y5=y9+y 10 , and the length of the thrust bearing is 1530mm;

[0076] The transverse offset of the thrust bearing and the clutch assembly y 11 , the offset of the clutch end caused by the deviation y 12 =0.95(θ1+θ2+θ3+θ4), the component ring Y6=y 11 +y 12 , and the length of the clutch is 950mm;

[0077] The transverse offset of the power shaft and the clutch assembly y13, the centering deviation of the power shaft θ5, the offset of the power shaft end caused by the deviation y 14 =3.84(θ1+θ2+θ3+θ4+θ5), the component ring Y7=y 13 +y 14 , and the length of the power shaft is 3840mm.

[0078] Step A16: Obtain the vertical deviation of a plurality of variables of the vertical closed ring to obtain a vertical component ring;

[0079] In specific implementation, asFigure 6 as shown, Figure 6 is a schematic view of vertical component rings of a certain type of shaft module, each component ring Z i Specifically includes:

[0080] Positioning deviation of the stern shaft reference point z1, offset of the stern shaft end generated by deflection z2=1800θ1, component ring Z1=z1+z2;

[0081] Lateral offset z3 of the rear shaft and the stern shaft assembly, offset of the rear shaft end generated by deflection z4=1800(θ1+θ2), component ring Z2=z3+z4;

[0082] Lateral offset z5 of the thrust shaft and the rear shaft assembly, offset of the thrust shaft end generated by deflection z6=3500(θ1+θ2+θ3), component ring Z3=z5+z6;

[0083] Lateral offset z7 of the thrust shaft and the front shaft assembly, offset of the front shaft end generated by deflection z8=4800(θ1+θ2+θ3+θ4), component ring Z4=z7+z8;

[0084] Lateral offset z9 of the thrust bearing and the front shaft assembly, offset of the thrust bearing end generated by deflection z 10 =1530(θ1+θ2+θ3+θ4), component ring Z5=z9+z 10 ;

[0085] Lateral offset z 11 of the thrust bearing and the clutch assembly, offset of the clutch end generated by deflection z 12 =950(θ1+θ2+θ3+θ4), component ring Z6=z 11 +z 12 ;

[0086] Lateral offset z 13 of the power shaft and the clutch assembly, offset of the power shaft end generated by deflection z 14 =3840(θ1+θ2+θ3+θ4+θ5), component ring Z7=z 13 +z 14 .

[0087] Step A17: obtaining a closed ring according to the axial closed ring, the lateral closed ring, and the vertical closed ring.

[0088] It should be noted that the axial closed ring, the lateral closed ring, and the vertical closed ring can be used as the closed ring.

[0089] Step A18: obtaining a component ring according to the axial component ring, the lateral component ring, and the vertical component ring.

[0090] In specific implementations, the axial component ring, the transverse component ring, and the vertical component ring can be component rings.

[0091] Step S20: establishing a dimension chain equation according to the closed loop and the component ring.

[0092] It should be noted that the precision control object equation expressed by the process precision variable can be established according to the determined closed loop and component ring, that is, the dimension chain equation, which is expressed as follows:

[0093]

[0094] In the formula: is the closed loop, that is, the multi-directional offset of the module in the axial, transverse, or vertical direction; is the component ring, that is, the precision variable of each process, subscript is the number of component rings.

[0095] It can be understood that since the direction of the offset is unknown, the component ring can be considered as an augmented ring, and therefore, the dimension chain formula of the axial closed loop X is expressed as follows:

[0096]

[0097] The dimension chain formula of the transverse closed loop Y is expressed as follows:

[0098]

[0099] The dimension chain formula of the vertical closed loop Z is expressed as follows:

[0100]

[0101] Step S30: determining a target dimension chain calculation strategy based on the number of component rings and the construction process flow.

[0102] It should be noted that the target dimension chain calculation strategy can be specifically determined according to the number of component rings and the construction process flow. Since the dimension chain includes multiple directions, the number of component rings and the construction process flow of the dimension chain in different directions are not the same, and different calculation strategies can be used to solve the precision of the position component ring.

[0103] The target dimension chain calculation strategy can include an extreme value method calculation strategy or a probability method calculation strategy. The extreme value method considers the most unfavorable case, and the precision allocation result is relatively strict, which is only applicable to modules with fewer component rings and simple construction process flows. The probability method is based on the principles of probability theory and is suitable for precision allocation calculation of modules with multiple construction links and weak correlation between component rings. Specifically, the target dimension chain calculation strategy can be determined according to the number of component rings and the construction process flow.

[0104] Specifically, for example, when the number of component rings is less than a preset value and the construction process meets preset requirements, the target size chain calculation strategy is determined as an extreme value method calculation strategy, and when the number of component rings is greater than or equal to the preset value and the construction process does not meet the preset requirements, the target size chain calculation strategy is determined as a probability method calculation strategy. The preset value can be set to 4, and the preset requirement is a requirement for a simple construction process. Specifically, the extreme value method is suitable for scenarios where the assembly success rate requirement is 100%, the number of size chain component rings is below 4, or the distribution probability of component ring deviations is difficult to count, and the probability method is generally suitable for scenarios where a small assembly failure risk is allowed, the number of size chain component rings is above 4, or the distribution probability of component ring deviations is consistent and stable and controllable. Therefore, the two calculation methods need to be considered comprehensively, and the appropriate method is selected based on the closed loop to reverse the precision of the unknown component ring in the component ring.

[0105] Step S40: solving the size chain equation according to the target size chain calculation strategy to obtain a preset component ring precision.

[0106] In specific implementation, the corresponding size chain equation can be solved according to the target size chain calculation strategy, so as to obtain the corresponding unknown component ring precision. The preset component ring precision is the unknown component ring precision in the axial, transverse and vertical directions.

[0107] Specifically, the axial size chain equation, the transverse size chain equation and the vertical size chain equation can be solved according to different size chain calculation strategies, so as to obtain the corresponding unknown component ring precision.

[0108] Step S50: performing assembly precision distribution according to the preset component ring precision.

[0109] In specific implementation, the assembly precision distribution can be performed according to the unknown component ring precision, so as to establish an axial, transverse and vertical multi-direction closed loop precision distribution model respectively, and realize the distribution of the precision of all component rings.

[0110] In a feasible implementation, step S50 can include steps A21-A26:

[0111] Step A21: performing first component ring precision distribution based on the axial component ring using the axial component ring precision in the preset component ring precision;

[0112] In specific implementation, the preset component ring precision includes one or more of the axial component ring precision, the transverse component ring precision and the vertical component ring precision. After obtaining the axial component ring precision, first component ring precision distribution can be performed based on the axial component ring using the axial component ring precision, that is, the unknown axial deviation in the axial component ring is distributed in precision.

[0113] Step A22: when the first component ring precision distribution is completed, detecting whether there is unknown component ring deviation in the transverse component ring;

[0114] In a specific implementation, after the first composition ring precision distribution is completed, it can be checked whether there is unknown composition ring deviation in the transverse composition ring, that is, whether there is unknown transverse composition ring deviation.

[0115] Step A23: When there is no unknown composition ring deviation in the transverse composition ring, it is detected whether the transverse composition ring meets the allowance setting requirement.

[0116] It should be noted that when there is unknown composition ring deviation in the transverse composition ring, the second composition ring precision distribution is performed according to the transverse composition ring in the preset composition ring precision.

[0117] In a specific implementation, if there is unknown composition ring deviation in the transverse composition ring, it indicates that there is unknown composition ring in the axial dimension chain that is not involved in the transverse dimension chain. At this time, the first composition ring precision distribution result is regarded as a known quantity, and the second composition ring precision distribution is performed on the unknown composition ring precision, that is, the transverse deviation of the position in the transverse composition ring is distributed in precision using the transverse composition ring in the preset composition ring precision, so as to complete the second composition ring precision distribution.

[0118] In a specific implementation, if there is no unknown composition ring deviation in the transverse dimension chain, it is calculated at this time whether the transverse dimension chain meets the allowance setting requirement.

[0119] It should be noted that the allowance setting requirement can be set according to requirements, for example, set to 10, 20, etc., which is not limited in the embodiment.

[0120] Step A24: When the transverse composition ring meets the allowance setting requirement, it is detected whether there is unknown composition ring deviation in the vertical composition ring.

[0121] It should be noted that if the transverse composition ring meets the allowance setting requirement, for example, the transverse composition ring is greater than or equal to 10, it is not necessary to perform unknown composition ring precision distribution on the transverse composition ring, and it is continued to be detected whether there is unknown composition ring deviation in the vertical composition ring.

[0122] In a specific implementation, when the transverse composition ring does not meet the allowance setting requirement, the known composition ring precision in the transverse composition ring is set as an unknown quantity, and the step of performing the second composition ring precision distribution by the transverse composition ring in the preset composition ring precision is executed.

[0123] If the transverse composition ring does not meet the allowance setting requirement, that is, the transverse composition ring is less than or equal to 10, it indicates that the unknown composition ring precision involved in the transverse dimension chain in the first composition ring precision distribution is an unknown quantity, and the remaining distributed unknown composition ring precision is regarded as a known quantity, and the second composition ring precision distribution is performed. When the second composition ring precision distribution is completed, it is detected whether there is unknown composition ring deviation in the vertical composition ring.

[0124] If the second component ring precision distribution is completed, it is then determined whether there is unknown component ring deviation in the vertical component ring, and whether the third component ring precision distribution is needed.

[0125] Step A25: When there is no unknown component ring deviation in the vertical component ring, it is determined whether the vertical component ring meets the allowance setting requirement.

[0126] In a specific implementation, when there is no unknown component ring deviation in the vertical component ring, it is determined whether the vertical dimension chain meets the allowance setting requirement.

[0127] It should be noted that when there is unknown component ring deviation in the vertical component ring, the third component ring precision distribution is performed according to the vertical component ring in the preset component ring precision.

[0128] In a specific implementation, when there is unknown component ring deviation in the vertical component ring, it is indicated that the unknown component ring in the vertical dimension chain is not involved in the horizontal dimension chain, and it is indicated that the unknown component ring precision of the vertical dimension chain involved in the second component ring precision distribution is an unknown quantity, and the remaining distributed unknown component ring precision is regarded as a known quantity, and the third component ring precision distribution is performed, that is, the unknown component ring deviation of the vertical component ring is distributed, and the third component ring precision distribution is performed using the vertical component ring in the preset component ring precision.

[0129] Step A26: When the vertical component ring meets the allowance setting requirement, the assembly precision distribution is completed.

[0130] It should be noted that when the vertical component ring meets the allowance setting requirement, the unknown component ring precision distribution is not needed for the vertical component ring, and the assembly precision distribution of the multi-directional component ring is completed at this time.

[0131] It should be noted that when the vertical component ring does not meet the allowance setting requirement, the known component ring precision in the vertical component ring is set as an unknown quantity, and the step of performing the third component ring precision distribution according to the vertical component ring in the preset component ring precision is executed.

[0132] If the vertical component ring does not meet the allowance setting requirement, the unknown component ring precision in the vertical component ring needs to be further distributed, and therefore the known component ring precision in the vertical component ring is set as an unknown quantity, and the third component ring precision distribution is performed on the unknown quantity according to the vertical component ring precision in the preset component ring precision.

[0133] As shown in FIG. 7, the assembly precision distribution of the multi-directional component ring is completed. Figure 7 Figure 7 ​For the precision multi-directional allocation process diagram, first, based on the axial size chain, the first component ring precision allocation is performed, and after the allocation is completed, it is detected whether there is unknown component ring deviation in the transverse size chain, if yes, the second component ring precision allocation is performed on the unknown component ring based on the transverse size chain, and after the allocation is completed, it is detected whether there is unknown component ring deviation in the vertical size chain, if yes, the third component ring precision allocation is performed on the unknown component ring based on the vertical size chain; if there is no unknown component ring deviation in the transverse size chain, it is judged whether the transverse size chain meets the requirement of the margin setting, if yes, the step of detecting whether there is unknown component ring deviation in the vertical size chain is executed, if not, the known component ring precision related to the transverse size chain is set as an unknown quantity, and the step of performing the second component ring precision allocation on the unknown component ring based on the transverse size chain is executed; if it is detected that there is no unknown component ring deviation in the vertical size chain, it is detected whether the vertical size chain meets the requirement of the margin setting, if yes, the allocation is completed, if not, the known component ring precision related to the vertical size chain is set as an unknown quantity, and the step of performing the third component ring precision allocation on the unknown component ring based on the vertical size chain is executed, and the component ring precision multi-directional allocation index value is completed.

[0134] The embodiment provides a ship section modular construction precision allocation design method, by defining the closed loop and the component ring, and establishing the size chain equation based on the construction process, the precision requirements of each assembly link can be accurately calculated, ensuring that the precision allocation of each link meets the overall assembly target, thereby realizing accurate control of the ship section modular construction. According to the number of component rings and the construction process, a target size chain calculation strategy is formulated, which can more reasonably arrange precision allocation resources. By solving the size chain equation and obtaining the preset component ring precision, the manufacturing errors of each link can be effectively predicted and controlled, avoiding the accumulation of errors leading to the deviation of the final assembly, thereby improving the assembly precision and quality of the ship section. Through accurate size chain calculation and precision allocation, the difficulty of component ring precision allocation caused by the coupling relationship of the closed loop is solved, the tolerance accumulation problem in the complex size chain of the ship is solved, the docking precision between modules is significantly improved, and the construction of the ship section meets the design requirements.

[0135] Embodiment two:

[0136] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as the above embodiment one can refer to the above introduction, and the subsequent will not be described in detail. On this basis, please refer to Figure 8 , step S40 includes steps S401-S405:

[0137] Step S401: when the target size chain calculation strategy is a probability method calculation strategy, the upper and lower limit deviations of the axial closed loop, the axial closed loop variables and the first sensitivity of each variable to the axial closed loop deviation are obtained.

[0138] It should be noted that the extreme value method can solve for the upper and lower limit deviations of the closed loop of the ship's axial, transverse and vertical directions. The deviations of all component loops simultaneously reach the upper or lower deviation of the accuracy, that is, the accuracy variable of each process is the maximum or minimum value of the deviation, which causes the closed loop to reach the maximum value of the accuracy deviation. Since the direction of offset and skew is unknown, all component loops can be regarded as additional loops.

[0139] Specifically, when the upper and lower limit deviation dimensions of the closed loop Q are satisfied:

[0140]

[0141] The lower limit deviation dimension of the closed loop Q is:

[0142]

[0143] In the formula, To form the ring standard deviation, and They represent the constituent rings respectively The maximum and minimum values ​​of the deviation, For the transmission coefficient, satisfying ,in is the dimension chain equation function in the above formula.

[0144] For probabilistic methods to solve for the vertical and axial deviations of a ship's closed loops, the distribution models of most of the component loops can be described by a normal distribution. For some component loops that are not normally distributed, the relative distribution coefficient and the distribution asymmetry coefficient can be used for correction.

[0145] When the component loops are normally distributed, the relationship between the standard deviation of the closed loop and the standard deviation of the component loops can be expressed as:

[0146]

[0147] When the component rings are non-normally distributed, a reliability factor is introduced. :

[0148]

[0149] The relationship between the standard deviation of the closed loop and the standard deviation of the component loops is as follows:

[0150]

[0151] The upper and lower deviation dimensions of the closed loop are as follows:

[0152]

[0153]

[0154] Wherein, When the composition ring is inversely solved based on the above method , since the closed ring is a multi-directional offset of the module in the axial, lateral or vertical direction, the dimensional chain in each direction is coupled, and therefore the unknown composition ring accuracy can be calculated according to the specific strategy using the above formula.

[0155] In a specific implementation, when the target dimensional chain calculation strategy is a probability method calculation strategy, at this time, the unknown ring composition accuracy needs to be solved for the axial dimensional chain, and if the accuracy is allocated according to the extreme value method, more stringent requirements are proposed for the deviation of each composition ring during construction, which far exceeds the standard and the existing deviation adjustment capability. Therefore, this will bring great burden to the overall design and construction of the ship, causing accuracy waste. In view of the large number of composition rings in the shafting process and the weak correlation between them, the probability method with unclear composition ring distribution is used to allocate and calculate the accuracy.

[0156] The upper and lower limit deviations of the axial closed ring X are set to ±20mm, the axial closed ring variable is composed of 12 variables, the standard deviations of all basic variables xi are equal, the first sensitivity of each variable to the closed ring deviation and the upper and lower limits are equal, each variable is a random variable, each variable is independent and the distribution of each variable is unclear.

[0157] Step S402: determining an axial closed ring deviation control target based on the upper and lower limit deviations of the axial closed ring and the first sensitivity.

[0158] In a specific implementation, the axial closed ring deviation control target can be determined according to the above parameters, as follows:

[0159]

[0160] Wherein, C is a reliability coefficient, is the first sensitivity, is the standard deviation of the composition ring, is the axial closed ring deviation control target.

[0161] Step S403: calculating a reliability coefficient based on the axial closed ring deviation control target, the first sensitivity and the number of axial closed ring variables.

[0162] In a specific implementation, when the axial composition ring is in a non-normal distribution, a reliability coefficient C is introduced, and since there are 12 variables, n=12, the reliability coefficient is represented as follows:

[0163]

[0164] Step S404: solving the axial closed ring deviation control target according to the reliability coefficient to obtain the standard deviation of the axial composition ring.

[0165] The reliability coefficient is substituted into the axial closed loop deviation control target to obtain an axial component ring standard deviation = 3.68 mm.

[0166] Step S405: obtaining a preset axial component ring precision based on the axial component ring standard deviation.

[0167] In a specific implementation, after obtaining the axial component ring standard deviation = 3.68 mm, the final axial component ring precision can be determined according to subsequent component ring standard deviations.

[0168] In a feasible implementation, step S405 can include steps B11-B14.

[0169] Step B11: obtaining an initial component ring axial deviation based on the axial component ring standard deviation.

[0170] In a specific implementation, the axial component ring standard deviation can be taken as the initial component ring axial deviation, that is, x i = ± 3.68 mm, and after rounding, the initial component ring axial deviation x i = ± 3.5 mm.

[0171] Step B12: determining an assembly axial deviation according to engineering experience.

[0172] Step B13: determining a plurality of axial component ring setting deviations in the axial component ring based on the assembly axial deviation.

[0173] It should be noted that, in order to ensure the rationality of the unknown component ring precision distribution, after determining the initial unknown component ring precision, the equipment production unit and the general assembly manufacturing unit can be communicated, and whether the unknown component ring precision distribution is reasonable can be verified according to existing engineering experience, so as to adjust the unknown component ring precision grade. Therefore, the assembly axial deviation can be determined according to engineering experience, for example, the assembly axial deviation is controlled to be ± 1 mm, and therefore the plurality of axial component ring setting deviations x3=x5=x7=x9=x 10 = 11 = ± 1 mm.

[0174] Step B14: returning to the step of calculating the reliability coefficient based on the axial closed loop deviation control target, the first sensitivity, and the number of axial closed loop variables based on the plurality of axial component ring setting deviations to obtain a preset axial component ring precision.

[0175] In a specific implementation, after obtaining the axial composition ring arrangement deviation, the step of inversely solving the axial closed ring deviation control target is returned to, so as to calculate the axial composition ring precision again, obtain the final preset axial composition ring precision, and finally design x1=x4=x6=x8=x 12 =±5mm.

[0176] The embodiment can accurately optimize the precision distribution of the axial closed ring under the influence of multiple variables by the probability calculation strategy, and ensure that each link in the ship section modular construction is in the optimal precision range. The reliability coefficient obtained by calculation helps to evaluate and enhance the reliability of the process flow, reduce potential risks in production, and improve production stability. Through the solution of the deviation control target, error sources can be systematically analyzed and optimized to avoid error accumulation in the manufacturing process and improve the quality of the final product. It can be dynamically optimized according to the changes of different variables and conditions in the actual construction process, and adapt to different production environments and needs.

[0177] Embodiment three

[0178] Based on the first and second embodiments of the application, in the third embodiment of the application, the same or similar contents as the above embodiment one can refer to the above introduction, and the subsequent will not be repeated. On this basis, please refer to Figure 9 , step S40 includes steps S401'~S406':

[0179] Step S401': when the target size chain calculation strategy is the extreme value method calculation strategy, the upper and lower limit deviations of the transverse closed ring, the transverse closed ring variables, and the second sensitivity of each variable to the transverse closed ring deviation are obtained.

[0180] It should be noted that when the target size chain calculation strategy is the extreme value method calculation strategy, the extreme value method is used to calculate the precision distribution because the engineering construction requirements impose more stringent requirements on each composition ring deviation. When the unknown composition ring precision is solved based on the axial size chain, all composition rings related to the transverse size chain are not solved, so the precision of all variables needs to be distributed.

[0181] In a specific implementation, the upper and lower limit deviation control of the transverse closed ring Y is ±20mm, the transverse closed ring is composed of 12 variables, the upper and lower limits of each variable are equal, each variable is a random variable, and the second sensitivity of each variable to the transverse closed ring deviation can be directly set.

[0182] Step S402': determining the transverse closed ring deviation control target based on the upper and lower limit deviations of the transverse closed ring and the second sensitivity.

[0183] In specific implementation, the second sensitivity is determined based on the upper and lower limit deviations of the transverse closed loop, and specifically, the transverse closed loop deviation control target is determined when the upper limit deviation size of the closed loop Y is satisfied:

[0184]

[0185] The lower limit deviation size of the closed loop Y is:

[0186]

[0187] and respectively represent the maximum value and the minimum value of the deviation of the composed ring is the second sensitivity.

[0188] Step S403': the transverse closed loop deviation control target is solved to obtain the transverse composed ring standard deviation.

[0189] In specific implementation, the transverse closed loop deviation control target is solved to obtain the transverse composed ring standard deviation = 0.28.

[0190] Step S404': the assembly transverse deviation is determined according to engineering experience.

[0191] It should be noted that according to engineering experience, the deflection of the shaft per meter is controlled within ±0.1 mm, and thus the assembly transverse deviation is ±0.1 mm.

[0192] Step S405': the multiple transverse composed ring setting deviations in the transverse composed ring are determined based on the assembly transverse deviation.

[0193] Specifically, after obtaining the assembly transverse deviation, the setting deviations of some transverse composed rings in the transverse composed ring are obtained, that is, θ1= θ2= θ3= θ4= θ5= ±0.1 mm.

[0194] Step S406': the step of solving the transverse closed loop deviation control target to obtain the transverse composed ring standard deviation is returned based on the multiple transverse composed ring setting deviations, to obtain the preset transverse composed ring precision.

[0195] In specific implementation, after obtaining the setting deviations of some transverse composed rings, the above formula is solved again, to obtain the preset transverse composed ring precision of the final design, that is, y1= y3= y5= y7= y9= y 11 = ±1.5 mm. 13

[0196] ​​It should be noted that after the accuracy of the unknown composition ring of the transverse size chain is solved, the accuracy of the unknown composition ring of the vertical size chain is solved by the same calculation process as the accuracy of the unknown composition ring of the transverse size chain. When the unknown composition ring accuracy is solved based on the transverse size chain, the composition ring of the vertical size chain involved has been partially solved, so the accuracy of the unsolved variables needs to be allocated.

[0197] Therefore, step S40 further comprises:

[0198] When the target size chain calculation strategy is the extreme value method calculation strategy, the upper and lower limit deviations of the vertical closed loop, the vertical closed loop variables, and the third sensitivity of each variable to the vertical closed loop deviation are obtained. The vertical closed loop deviation control target is determined based on the upper and lower limit deviations of the vertical closed loop and the third sensitivity. A plurality of vertical composition ring setting deviations in the vertical composition ring are obtained, and the vertical composition ring setting deviation is the solved deviation. The vertical closed loop deviation control target is solved according to the plurality of vertical composition ring setting deviations, and a preset vertical composition ring accuracy is obtained.

[0199] It should be noted that the upper limit deviation of the vertical closed loop is controlled within ±15mm, the closed loop is composed of 12 variables, the extreme value method is used, the upper and lower limits of each variable are equal, and each variable is a random variable. Therefore, the vertical closed loop deviation control target can be determined according to the upper and lower limit deviations of the vertical closed loop and the third sensitivity. The final continuous closed loop deviation control target is:

[0200] When the closed loop Z upper limit deviation size is satisfied:

[0201]

[0202] When the closed loop Z lower limit deviation size is satisfied:

[0203]

[0204] By determining the engineering experience, a plurality of vertical composition ring setting deviations θ1=θ2=θ3=θ4=θ5=±0.1mm in the vertical composition ring are obtained. Therefore, the plurality of vertical composition ring setting deviations are substituted into the above formula for calculation. The final designed preset vertical composition ring accuracy z1=z3=z5=z7=z9=z 11 = 13 =±1mm.

[0205] Thus, the accuracy of each unknown composition ring can be obtained, thereby realizing the allocation of the composition ring accuracy.

[0206] As shown in Figure 10 , the target size chain calculation strategy is determined according to the target size chain type and the target size chain calculation strategy type. The target size chain type is determined according to the target size chain type determination strategy. The target size chain calculation strategy type is determined according to the target size chain calculation strategy type determination strategy. Figure 10The flowchart for precision distribution of ship section modular construction first determines the component ring and the closed ring, then establishes the dimension chain equation based on the component ring and the closed ring, simultaneously inversely solves the equation based on the dimension chain equation using the engineering experience method and the numerical analysis method to adjust the deviation of each component ring, distributes the unknown deviation of each component ring, solves the dimension chain equation by the extreme value method or the probability method, and judges whether the limit deviation is less than or equal to the allowable allowance.

[0207] The embodiment effectively controls the precision of the transverse closed ring through multiple calculations and feedback adjustments, and ensures that each link of the final product can meet the design requirements. By introducing the second sensitivity analysis, the complex nonlinear relationship between variables can be effectively considered, providing more accurate basis for precision control. Combined with engineering experience and calculation strategy, the precision control is ensured to be more in line with actual production conditions, avoiding the deviation that may occur in pure theoretical calculation. Through multiple reverse feedback and adjustment, the deviation can be dynamically optimized to ensure that each variable in the assembly process is within the controllable range.

[0208] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the assembly precision distribution method of the ship section modular construction of the present application. More forms of simple transformation based on this technical concept are within the protection scope of the present application.

[0209] The present application also provides a ship section modular construction precision distribution device, which comprises:

[0210] A determination module is configured to determine a closed ring and a component ring according to a ship section modular construction process.

[0211] An establishment module is configured to establish a dimension chain equation according to the closed ring and the component ring.

[0212] The determination module is further configured to determine a target dimension chain calculation strategy based on the number of component rings and the construction process.

[0213] A solving module is configured to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring precision.

[0214] A distribution module is configured to perform assembly precision distribution according to the preset component ring precision.

[0215] The ship section modular construction precision distribution device provided by the application adopts the ship section modular construction precision distribution design method in the above embodiment, and can solve the technical problems that the assembly precision deviation is large, affects the overall size and strength of the ship section, and may also cause deformation or fatigue of the structure. Compared with the prior art, the ship section modular construction assembly precision distribution device provided by the application has the same beneficial effects as the ship section modular construction assembly precision distribution method provided by the above embodiment, and other technical features in the ship section modular construction assembly precision distribution device are the same as the features disclosed in the above embodiment method, and will not be repeated here.

[0216] The application provides a ship section modular construction precision distribution device, which comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the ship section modular construction assembly precision distribution method in the above embodiment one.

[0217] The ship section modular construction precision distribution device provided by the application adopts the ship section modular construction precision distribution design method in the above embodiment, and can solve the technical problems that the assembly precision deviation is large, affects the overall size and strength of the ship section, and may also cause deformation or fatigue of the structure. Compared with the prior art, the ship section modular construction assembly precision distribution device provided by the application has the same beneficial effects as the ship section modular construction assembly precision distribution method provided by the above embodiment, and other technical features in the ship section modular construction assembly precision distribution device are the same as the features disclosed in the above embodiment method, and will not be repeated here.

[0218] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0219] The above is merely specific implementation manners of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0220] The application provides a computer readable storage medium having computer readable program instructions (i.e. computer programs) stored thereon, the computer readable program instructions being used to execute the ship section modular construction assembly precision distribution method in the above embodiment.

[0221] The readable storage medium provided by the application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer programs) for executing the assembly precision distribution method for modular construction of the ship section module, and can solve the technical problem that the assembly precision deviation is large, which affects the overall size and strength of the ship section module, and may also cause deformation or fatigue of the structure. Compared with the prior art, the computer readable storage medium provided by the application has the same beneficial effects as the assembly precision distribution method for modular construction of the ship section module provided by the above-mentioned embodiments, and will not be described here.

[0222] The application further provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the assembly precision distribution method for modular construction of the ship section module as described above.

[0223] The computer program product provided by the application can solve the technical problem that the assembly precision deviation is large, which affects the overall size and strength of the ship section module, and may also cause deformation or fatigue of the structure. Compared with the prior art, the computer program product provided by the application has the same beneficial effects as the assembly precision distribution method for modular construction of the ship section module provided by the above-mentioned embodiments, and will not be described here.

[0224] The above-mentioned is only part of the embodiments of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields made by using the content of the application specification and drawings under the technical concept of the application are included in the patent protection scope of the application.

Claims

1. A method for precision allocation design in modular construction of ship sections, characterized in that, The modular construction precision allocation design method for ship sections includes: The closed loop and constituent loops are determined based on the modular construction process of the ship's main sections; Establish a dimensional chain equation based on the closed loop and the constituent loop; The target size chain calculation strategy is determined based on the number of the constituent rings and the construction process. The dimension chain equation is solved according to the target dimension chain calculation strategy to obtain the preset component loop accuracy; The assembly precision is allocated according to the preset component ring precision. The steps for determining the closed loop and constituent loops based on the modular construction process of ship sections include: The pre-designed shafting modules of the ship are determined based on the modular construction process of the ship's main sections; Obtain the axial offset, lateral offset, and vertical offset of the ship's preset shafting module; An axial closed loop is obtained based on the axial offset, a lateral closed loop is obtained based on the lateral offset, and a vertical closed loop is obtained based on the vertical offset. The axial deviations of multiple variables of the axial closed loop are obtained to obtain the axial component loop; The lateral deviations of multiple variables of the lateral closed loop are obtained to obtain the lateral component loop; Obtain the vertical deviations of multiple variables of the vertical closed loop to obtain the vertical component loop; A closed ring is obtained based on the axial closed ring, the transverse closed ring, and the vertical closed ring; The constituent rings are obtained based on the axial constituent ring, the transverse constituent ring, and the vertical constituent ring; The step of allocating assembly precision according to the preset component ring precision includes: The first component ring precision allocation is performed based on the axial component ring precision in the preset component ring precision. When the first component ring accuracy allocation is completed, check whether there is any unknown component ring deviation in the transverse component ring; When there is no unknown component ring deviation in the horizontal component ring, it is detected whether the horizontal component ring meets the margin setting requirements; When the horizontal component ring meets the margin setting requirements, detect whether there is an unknown component ring deviation in the vertical component ring; When there is no unknown component ring deviation in the vertical component ring, check whether the vertical component ring meets the margin setting requirements; When the vertical component ring meets the allowance setting requirements, the assembly accuracy allocation is completed; The method further includes: When there is an unknown component ring deviation in the transverse component ring, a second component ring accuracy allocation is performed based on the transverse component ring in the preset component ring accuracy. When the horizontal component ring meets or does not meet the margin setting requirements, the known component ring precision in the horizontal component ring is set to an unknown quantity, and the second component ring precision allocation step is performed on the horizontal component ring in the preset component ring precision. When the second component ring accuracy allocation is completed, check whether there is any unknown component ring deviation in the vertical component ring; When there is an unknown component ring deviation in the vertical component ring, a third component ring accuracy allocation is performed based on the vertical component ring in the preset component ring accuracy. When the vertical component ring does not meet the margin setting requirements, the known component ring accuracy in the vertical component ring is set to an unknown quantity, and the step of allocating the third component ring accuracy according to the vertical component ring in the preset component ring accuracy is executed.

2. The method as described in claim 1, characterized in that, The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component loop accuracy includes: When the target dimension chain calculation strategy is a probabilistic calculation strategy, the upper and lower limit deviations of the axial closed loop, the axial closed loop variables, and the first sensitivity of each variable to the axial closed loop deviation are obtained. The axial closed loop deviation control target is determined based on the upper and lower limit deviations of the axial closed loop and the first sensitivity. The reliability coefficient is calculated based on the axial closed-loop deviation control target, the first sensitivity, and the number of axial closed-loop variables. The axial closed-loop deviation control target is solved based on the reliability coefficient to obtain the standard deviation of the axial component loop; The preset axial component ring accuracy is obtained based on the standard deviation of the axial component ring.

3. The method as described in claim 2, characterized in that, The step of obtaining the preset axial component ring accuracy based on the standard deviation of the axial component ring includes: The initial axial deviation of the component ring is obtained based on the standard deviation of the axial component ring. Determine the axial deviation of the assembly based on engineering experience; The deviation of setting multiple axial component rings in the axial component ring is determined based on the assembly axial deviation. Based on the deviation settings of multiple axial component loops, the step of calculating the reliability coefficient based on the axial closed loop deviation control target, the first sensitivity, and the number of axial closed loop variables is returned to obtain the preset axial component loop accuracy.

4. The method as described in claim 1, characterized in that, The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component loop accuracy includes: When the target size chain calculation strategy is the extreme value method calculation strategy, the upper and lower limit deviations of the transverse closed loop, the transverse closed loop variables, and the second sensitivity of each variable to the transverse closed loop deviation are obtained. The target for controlling the deviation of the lateral closed loop is determined based on the upper and lower limit deviations of the lateral closed loop and the second sensitivity. The standard deviation of the lateral component loops is obtained by solving the deviation control target of the lateral closed loop. Determine the lateral deviation of the assembly based on engineering experience; Based on the assembly lateral deviation, the setting deviation of multiple lateral component rings in the lateral component ring is determined; Based on the set deviation of multiple transverse component loops, the step of solving the transverse closed loop deviation control target to obtain the standard deviation of the transverse component loop is returned to obtain the preset transverse component loop accuracy.

5. The method as described in claim 1, characterized in that, The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component loop accuracy includes: When the target size chain calculation strategy is the extreme value method calculation strategy, the upper and lower limit deviations of the vertical closed loop, the vertical closed loop variables, and the third sensitivity of each variable to the vertical closed loop deviation are obtained. The vertical closed loop deviation control target is determined based on the upper and lower limit deviations of the vertical closed loop and the third sensitivity. Obtain the setting deviations of multiple vertical component rings in the vertical component ring, wherein the setting deviations of the vertical component rings are the solved deviations; The vertical closed loop deviation control target is solved by setting deviations for multiple vertical component loops to obtain the preset vertical component loop accuracy.

6. A modular construction precision allocation device for ship sections, used to execute the modular construction precision allocation design method for ship sections as described in any one of claims 1-5, characterized in that, The device includes: The module is used to determine the closed loop and the constituent loops based on the modular construction process of the ship section; A module is established to establish a dimensional chain equation based on the closed loop and the constituent loops; The determining module is also used to determine the target size chain calculation strategy based on the number of the constituent rings and the construction process. The solver module is used to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component loop accuracy; The allocation module is used to allocate assembly precision according to the preset component ring precision.

7. A precision allocation device for modular construction of ship sections, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the modular construction precision allocation design method for ship sections as described in any one of claims 1 to 5.

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