Ship block modular construction precision distribution design method and device

Abstract

The invention discloses a ship block modularization construction precision distribution design method and device, and relates to the technical field of ship construction, and the method comprises the steps: determining a closed ring and a composition ring according to a ship block modularization construction technological process; establishing a dimension chain equation according to the closed ring and the composition ring; determining a target dimension chain calculation strategy based on the number of the composition rings and the construction process flow; solving the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset composition ring precision; and assembling precision distribution is carried out according to the preset ring forming precision. By respectively establishing axial, transverse and vertical multi-directional closed ring precision distribution models, the problem of difficulty in precision distribution of composition rings caused by a coupling relationship of closed rings is systematically solved, the problem of tolerance accumulation in a ship complex dimension chain is solved, the butt joint precision between modules is remarkably improved, and the ship block construction is ensured to meet design requirements.

Description

Technical Field

[0001] The present application relates to the field of shipbuilding technology, and in particular to a method and device for designing precision distribution of modular construction of ship sections. Background Art

[0002] Modular ship construction is a technical model that divides a ship into multiple independently constructible sections, achieving efficient production through parallel manufacturing and integrated assembly. During the modular construction of ship sections, the actual manufactured modules often deviate from the ideal design due to factors such as the accuracy of processing equipment and the length of the dimensional chain. This causes the modules to offset in multiple directions relative to the section structure during the welding and assembly process, which in turn affects the precise assembly between modules and directly affects the overall quality and performance of the ship. Therefore, before modular construction of the sections, it is of great significance to distribute the assembly accuracy in multiple directions and control the module's axial, lateral, and vertical offsets to be within a reasonable range.

[0003] During the actual precision allocation process, process engineers have recognized the widespread existence of multi-directional offsets between the ends of modules. However, these offsets are primarily controlled and predicted through engineering experience and forward closed-loop solutions, resulting in unstable and inaccurate precision control. During the assembly precision allocation process, as modules are gradually assembled at different stages, multiple levels of deviations, such as positioning deviations, part manufacturing deviations, and welding deviations, accumulate gradually across different process steps, leading to significant deviations in the final assembly precision. This problem not only affects the overall size and strength of the ship's sections but can also lead to structural deformation or fatigue, and in severe cases, can even affect the ship's navigation performance and safety. Summary of the Invention

[0004] The main purpose of this application is to provide a method and device for designing modular construction precision distribution of ship sections, aiming to solve the technical problem that large deviations in assembly precision affect the overall size and strength of ship sections and may also cause deformation or fatigue of the structure.

[0005] To achieve the above objectives, the present application proposes a method for designing modular construction precision distribution of ship sections, the method comprising: Determine the closed loop and component loops based on the modular construction process of the ship block; Establishing a dimension chain equation based on the closed loop and the component loops; Determining a target dimension chain calculation strategy based on the number of component rings and the construction process flow; Solving the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring accuracy; The assembly precision is distributed according to the preset component ring precision.

[0006] In addition, to achieve the above-mentioned purpose, the present application also proposes a device for allocating precision in modular construction of ship sections, the device comprising: A determination module is used to determine the closed loop and the component loop according to the modular construction process of the ship block; An establishing module, for establishing a dimension chain equation according to the closed loop and the component loops; 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 flow; A solving module, configured to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring accuracy; The allocation module is used to allocate assembly accuracy according to the preset component ring accuracy.

[0007] In addition, to achieve the above-mentioned purpose, the present application also proposes a device for allocating precision in the modular construction of ship sections, which includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for allocating precision in the modular construction of ship sections as described above.

[0008] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the modular multi-level assembly accuracy distribution method of the ship section are implemented as described above.

[0009] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the modular multi-level assembly accuracy allocation method for ship sections as described above.

[0010] One or more technical solutions proposed in this application have at least the following technical effects: 1) By clarifying the definitions of closed loops and component loops and establishing dimensional chain equations based on the construction process, the precision requirements of each assembly link can be accurately calculated, ensuring that the precision distribution of each link meets the overall assembly goals, thereby achieving precise control over the modular construction of ship sections. Formulating a target dimensional chain calculation strategy based on the number of component loops and the construction process can more rationally arrange precision allocation resources. By solving the dimensional chain equation and obtaining the preset component loop precision, manufacturing errors in each link can be effectively predicted and controlled, avoiding deviations in the final assembly due to error accumulation, thereby improving the assembly precision and quality of ship sections. Through precise dimensional chain calculation and precision distribution, the difficulty in allocating component loop precision caused by the coupling relationship between closed loops is resolved, and the tolerance accumulation problem in complex ship dimensional chains is solved. The docking accuracy between modules is significantly improved, ensuring that the construction of ship sections meets design requirements.

[0011] 2) Using a probabilistic calculation strategy, the accuracy distribution of the axial closed loop can be precisely optimized under the influence of multiple variables, ensuring that each link in the modular construction of ship blocks is within the optimal accuracy range. The calculated reliability coefficient helps evaluate and enhance process reliability, reduce potential risks in production, and improve production stability. By solving the deviation control target, error sources can be systematically analyzed and optimized, avoiding error accumulation during the manufacturing process and improving final product quality. Dynamic optimization can be performed based on the changes in different variables and conditions during the actual construction process, adapting to different production environments and requirements.

[0012] 3) Through multiple calculations and feedback adjustments, the precision of the lateral closed loop is effectively controlled, ensuring that every aspect of the final product meets design requirements. The introduction of secondary sensitivity analysis effectively accounts for the complex nonlinear relationships between variables, providing a more accurate basis for precision control. Combining engineering experience with calculation strategies ensures that precision control more closely matches actual production conditions, avoiding the potential deviations associated with purely theoretical calculations. Through multiple reverse feedback and adjustments, deviations can be dynamically optimized, ensuring that all variables in the assembly process remain within controllable limits. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1A flow chart illustrating the first embodiment of the modular construction precision allocation design method for ship sections of the present application; Figure 2 A schematic diagram of a shafting module structure of a certain model provided in accordance with an embodiment of the modular construction precision allocation design method for ship sections of this application; Figure 3 A schematic diagram of the X-axial component ring of a certain type of shafting module provided in accordance with an embodiment of the modular construction precision distribution design method for ship sections of the present application; Figure 4 A schematic diagram of the Y-axis component ring of a certain type of shafting module provided in accordance with an embodiment of the modular construction precision distribution design method for ship sections of the present application; Figure 5 A schematic diagram of axis distribution provided for an embodiment of the modular construction precision allocation design method for ship sections of this application; Figure 6 A schematic diagram of a vertical component ring of a certain type of shafting module provided in accordance with an embodiment of the modular construction precision distribution design method for ship sections of the present application; Figure 7 A schematic diagram of a multi-directional precision allocation process provided for an embodiment of a precision allocation design method for modular construction of ship sections of the present application; Figure 8 A flow chart illustrating the second embodiment of the modular construction precision allocation design method for ship sections of the present application; Figure 9 A flow chart illustrating the third embodiment of the method for designing modular construction precision distribution for ship sections of the present application; Figure 10 A brief flow chart of the precision allocation design method for modular construction of ship sections provided in Example 2 of the present application.

[0016] Description of Figure Numbers: Stern shaft 1, rear shaft 2, thrust shaft 3, front shaft 4, thrust bearing 5, clutch 6, power shaft 7.

[0017] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0019] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The main solution of the embodiment of the present application is: determine the closed loop and the component ring according to the modular construction process of the ship section; establish the dimension chain equation according to the closed loop and the component ring; determine the target dimension chain calculation strategy based on the number of the component rings and the construction process; solve the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component ring accuracy; and allocate assembly accuracy according to the preset component ring accuracy.

[0021] Because existing technologies primarily rely on engineering experience and forward closed-loop solutions to control and predict offsets, precision control is not stable and accurate. During the assembly precision allocation process, as modules are gradually assembled at different stages, multiple levels of deviation, including positioning deviation, part manufacturing deviation, and welding deviation, accumulate across various process steps, resulting in significant deviations in the final assembly precision. This problem not only affects the overall size and strength of the ship's sections but can also lead to structural deformation or fatigue, and in severe cases, even compromise the ship's navigational performance and safety.

[0022] The present application provides a precision allocation design method for modular construction of ship sections. The component rings are reasonably allocated through the dimension chain relationship, and the precision of unknown component rings in the axial, lateral and vertical multi-directional dimension chains are reversely solved based on the extreme value method and the probability method. Finally, the axial, lateral and vertical multi-directional closed loop precision allocation models are established respectively to realize the precision allocation of all component rings.

[0023] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device capable of performing the above functions, or the assembly accuracy distribution of modular ship section construction. This embodiment and the following embodiments will be described below using the assembly accuracy distribution of modular ship section construction as an example.

[0024] Example 1: Based on this, the embodiment of the present application provides a method for designing modular construction precision of ship sections, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the modular construction precision allocation design method for ship sections of the present application.

[0025] In this embodiment, the modular construction precision allocation design method for ship sections includes steps S10 to S50: Step S10: Determine the closed loop and the component loop according to the modular construction process of the ship block.

[0026] It should be noted that when carrying out modular construction of ship sections, the corresponding construction process flow can be obtained first to determine the closed loop and component loop. The construction process flow includes the components for building 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 component loop.

[0027] Specifically, according to the segmented docking process, the key items of multi-directional precision distribution of the current process flow can be analyzed, including manufacturing deviation, docking assembly deviation, welding deformation deviation, etc., and the baseline value and upper and lower deviation values ​​of each deviation in the axial, transverse and vertical directions of the ship can be clarified, and the deviations can be regarded as each component ring.

[0028] The closed ring includes multi-directional closed rings such as axial closed rings, transverse closed rings and vertical closed rings, and the component ring includes multi-directional component rings such as axial component rings, transverse component rings and vertical component rings.

[0029] In a feasible implementation, step S10 may include steps A11 to A18: Step A11: Determine the preset shafting module of the ship according to the modular construction process of the ship section; It should be noted that the specific requirements for a ship's pre-set shafting modules can be determined based on the modular construction process for ship sections. The modular construction process divides a ship into multiple modules, each of which is built in a factory and then assembled. Shafting modules refer to pre-set modules for different shafting sections within a ship.

[0030] like Figure 2 As shown, Figure 2 This is a schematic diagram of the shafting module structure of a certain model. From left to right, it includes: stern shaft 1, rear shaft 2, thrust shaft 3, front shaft 4, thrust bearing 5, clutch 6, and power shaft 7. Based on specific needs, the multi-directional offset of these modules can be selected to determine the closed loop and component loops. For example, the multi-directional offset at the end of the power shaft can be used to determine the closed loop and component loops.

[0031] Step A12: Obtaining the axial offset, lateral offset, and vertical offset of the preset shafting module of the ship; In a specific implementation, the axial offset, lateral offset and vertical offset of the preset shafting module of the ship can be obtained, for example, the axial offset of the end of the power shaft, the lateral offset from the starting end of the stern shaft to the end of the power shaft, and the vertical offset from the starting end of the stern shaft to the end of the power shaft are used as the axial offset, lateral offset and vertical offset respectively.

[0032] Step A13: obtaining an axial closed loop according to the axial offset, obtaining a transverse closed loop according to the transverse offset, and obtaining a vertical closed loop according to the vertical offset; It should be noted that an axial closed loop can be obtained according to the axial offset, that is, the axial offset of the end of the power shaft is the closed loop X, the lateral offset from the starting end of the stern shaft to the end of the power shaft is the closed loop Y, and the vertical offset from the starting end of the stern shaft to the end of the power shaft is the closed loop Z.

[0033] Step A14: obtaining axial deviations of multiple variables of the axial closed ring to obtain an axial component ring; In specific implementation, Figure 3 As shown, Figure 3 This is a schematic diagram of the axial ring components of a certain type of shaft system module. Each axial ring component X i Axial misalignment encompasses several variables, including: Positioning deviation of the stern shaft reference point x1, stern shaft length dimension deviation x2, component ring X1 = x1 + x2; The axial deviation of the rear axle and the stern axle is x3, the length deviation of the rear axle is x4, and the ring X2 = x3 + x4; The axial deviation of the thrust shaft and the rear shaft is x5, the length deviation of the thrust shaft is x6, and the ring X3 = x5 + x6; The axial deviation between the thrust shaft and the front shaft is x7, the length deviation of the front shaft is x8, and the ring X4 = x7 + x8; The axial deviation between the thrust bearing and the front axle is x9, and the ring is X5 = x9; Thrust bearing and clutch assembly axial deviation x 10 , forming a ring X6=x 10 ; Axial deviation of power shaft and clutch assembly x 11 , power shaft length dimension deviation x 12 , forming a ring X7=x 11 +x 12 .

[0034] Step A15: Obtaining lateral deviations of multiple variables of the lateral closed loop to obtain a lateral component loop; In specific implementation, Figure 4 As shown, Figure 4 This is a schematic diagram of the axial ring of a certain type of shaft system module. The axis of each shaft itself may be misaligned. The schematic diagram is as follows Figure 5 As shown, each lateral ring Y i Includes lateral deviations across multiple variables, including: The positioning deviation of the stern shaft reference point is y1, the stern shaft centering deflection is θ1, and the offset of the stern shaft end caused by the deflection is y2=1.8θ1, forming a loop Y1=y1+y2, and 1800mm is the length of the stern shaft; The rear axle and stern axle are assembled with a lateral offset of y3, and the rear axle is skewed θ2. The offset of the rear axle end caused by the skew is y4 = 1.42 (θ1 + θ2), forming a loop Y2 = y3 + y4, and the length of the rear axle is 1420 mm. The thrust shaft and the rear shaft are assembled with a lateral offset of y5, and the thrust shaft is skewed by θ3. The offset of the thrust shaft end caused by the deflection is y6 = 3.5 (θ1 + θ2 + θ3), forming a loop Y3 = y5 + y6. The length of the thrust shaft is 3500 mm. The thrust shaft and front axle are assembled with a lateral offset of y7, and the front axle is skewed by θ4. The offset of the front axle end caused by the deflection is y8 = 4.8 (θ1 + θ2 + θ3 + θ4), forming a loop Y4 = y7 + y8. The length of the front axle is 4800 mm. The thrust bearing is laterally offset from the front axle by y9, and the offset caused by the deflection at the end of the thrust bearing is y 10 =1.53(θ1+θ2+θ3+θ4), forming the ring Y5=y9+y 10 , 1530mm is the length of the thrust bearing; Thrust bearing and clutch assembly lateral offset y 11 , the displacement caused by the deflection at the end of the clutch is y 12 =0.95(θ1+θ2+θ3+θ4), forming ring Y6=y 11 +y 12 , 950mm is the length of the clutch; The power shaft and the clutch assembly are offset y13 laterally, the power shaft is skewed θ5, and the offset caused by the deflection at the end of the power shaft is y 14 =3.84 (θ1+θ2+θ3+θ4+θ5), forming a ring Y7=y 13 +y 14 , 3840mm is the length of the power shaft.

[0035] Step A16: Obtain vertical deviations of multiple variables of the vertical closed loop to obtain a vertical component loop; In specific implementation, Figure 6 As shown, Figure 6 This is a schematic diagram of the vertical rings of a certain type of shafting module. i Specifically include: The positioning deviation of the stern shaft reference point is z1, and the offset of the stern shaft end caused by the deflection is z2=1800θ1, forming a loop Z1=z1+z2; The rear axle and stern axle are assembled with a lateral offset z3. The offset caused by the deflection at the end of the rear axle is z4 = 1800 (θ1 + θ2), forming a loop Z2 = z3 + z4; The thrust shaft and the rear shaft are assembled with a lateral offset of z5. The offset caused by the deflection at the end of the thrust shaft is z6 = 3500 (θ1 + θ2 + θ3), forming a loop Z3 = z5 + z6; The thrust shaft and the front shaft are assembled with a lateral offset of z7. The offset caused by the deflection at the end of the front shaft is z8 = 4800 (θ1 + θ2 + θ3 + θ4), forming a loop Z4 = z7 + z8; The thrust bearing is laterally offset from the front axle by z9, and the offset caused by the deflection at the end of the thrust bearing is z 10 =1530(θ1+θ2+θ3+θ4), forming the ring Z5=z9+z 10 ; Thrust bearing and clutch assembly lateral offset z 11 , the displacement caused by the deflection at the end of the clutch is z 12 =950 (θ1+θ2+θ3+θ4), forming a ring Z6=z 11 +z 12 ; Transverse offset z between power shaft and clutch assembly 13 , the offset caused by the deflection at the end of the power shaft is z 14 =3840 (θ1+θ2+θ3+θ4+θ5), forming a ring Z7=z 13 +z 14 .

[0036] Step A17: Obtaining a closed loop according to the axial closed loop, the transverse closed loop, and the vertical closed loop; It should be noted that the axial closed ring, the transverse closed ring and the vertical closed ring can be used as the closed ring.

[0037] Step A18: Obtain a component ring according to the axial component ring, the transverse component ring, and the vertical component ring.

[0038] In a specific implementation, an axial component ring, a transverse component ring, and a vertical component ring may be used as the component ring.

[0039] Step S20: establishing a dimension chain equation according to the closed loop and the component loops.

[0040] It should be noted that the precision control object equation expressed by the process precision variables can be established based on the determined closed loop and component loop, that is, the dimensional chain equation. The dimensional chain equation is expressed as follows:

[0041] Where: It is a closed loop, that is, the module is offset in multiple directions in the axial, lateral or vertical directions; is the component ring, that is, the precision variable of each process, subscript is the number of rings.

[0042] It is understandable that since the direction of the offset is unknown, all the constituent rings can be considered as incremental rings. Therefore, the dimensional chain formula of the axial closed ring X is expressed as follows:

[0043] The dimensional chain formula of the transverse closed loop Y is as follows:

[0044] The formula for the dimensional chain of the vertical closed loop Z is as follows:

[0045] Step S30: determining a target dimension chain calculation strategy based on the number of component rings and the construction process flow.

[0046] It should be noted that the target dimension chain calculation strategy can be determined based on the number of component rings and the construction process flow. Since it includes multi-directional dimension chains, the number of component rings and the construction process flow of dimension chains in different directions are different, and different calculation strategies can be used to solve the accuracy of the position component rings.

[0047] The target dimension chain calculation strategy may include the extreme value method calculation strategy or the probability method calculation strategy. The extreme value method considers the most unfavorable situation, and the precision allocation result is relatively strict. It is only applicable to modules with a small number of component rings and a simple construction process. The probability method is based on the principle of probability and is suitable for precision allocation calculations with many construction links and weak correlation between component rings. The target dimension chain calculation strategy can be determined specifically according to the number of component rings and the construction process.

[0048] Specifically, for example, when the number of component rings is less than a preset value and the construction process meets the preset requirements, the target dimension chain calculation strategy is determined to be the extreme value method calculation strategy. 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 dimension chain calculation strategy is determined to be the probability method calculation strategy. The preset value can be set to 4, and the preset requirement is that the construction process is simple. Specifically, the extreme value method is suitable for scenarios such as those requiring a 100% assembly success rate, the number of component rings in the dimension chain is less than 4, or the probability of component ring deviation distribution is difficult to calculate. The probability method is generally suitable for scenarios such as those that allow a small risk of assembly failure, the number of component rings in the dimension chain is greater than 4, or the probability of component ring deviation distribution is consistent and stable and controllable. Therefore, it is necessary to comprehensively consider the two calculation methods and select an appropriate method based on the closed loop to inversely calculate the accuracy of unknown component rings in the component rings.

[0049] Step S40: Solving the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring accuracy.

[0050] In a specific implementation, the corresponding dimension chain equation can be solved according to the target dimension chain calculation strategy to obtain the corresponding unknown component ring accuracy. The preset component ring accuracy is the unknown component ring accuracy in the axial, lateral and vertical directions.

[0051] Specifically, the axial dimension chain equation, the transverse dimension chain equation, and the vertical dimension chain equation can be solved according to different dimension chain calculation strategies to obtain the corresponding unknown component ring accuracy.

[0052] Step S50: performing assembly precision distribution according to the preset component ring precision.

[0053] In specific implementation, assembly accuracy can be distributed according to the accuracy of unknown component rings, so as to establish axial, lateral and vertical multi-directional closed ring accuracy distribution models respectively to achieve the distribution of accuracy of all component rings.

[0054] In a feasible implementation, step S50 may include steps A21 to A26: Step A21: performing a first component ring precision allocation based on the axial component ring using the axial component ring precision in the preset component ring precision; In a specific implementation, the preset component ring accuracy includes one or more of the axial component ring accuracy, the lateral component ring accuracy, and the vertical component ring accuracy. After obtaining the axial component ring accuracy, the axial component ring accuracy can be used to perform the first component ring accuracy allocation based on the axial component ring, that is, to allocate the unknown axial deviation in the axial component ring.

[0055] Step A22: After the first component ring accuracy allocation is completed, detect whether there is an unknown component ring deviation in the horizontal component ring; In a specific implementation, after the first allocation of component ring accuracy is completed, it may be checked whether there is an unknown component ring deviation in the horizontal component ring, that is, whether there is an unknown horizontal component ring deviation.

[0056] Step A23: When there is no unknown component ring deviation in the horizontal component ring, detecting whether the horizontal component ring meets the margin setting requirement; It should be noted that when there is an unknown component ring deviation in the horizontal component ring, a second component ring accuracy allocation is performed according to the horizontal component ring in the preset component ring accuracy.

[0057] In the specific implementation, if there is an unknown component ring deviation in the transverse component ring, it means that there is an unknown component ring in the axial dimension chain that does not involve the transverse dimension chain. At this time, the result of the first component ring accuracy allocation is regarded as a known quantity, and the second component ring accuracy allocation is performed on the unknown component ring accuracy, that is, the transverse component ring in the preset component ring accuracy is used to allocate the transverse deviation of the position in the transverse component ring, thereby completing the second component ring accuracy allocation.

[0058] In a specific implementation, if there is no unknown component ring deviation in the transverse dimensional chain, then it is calculated whether the transverse dimensional chain meets the allowance setting requirements.

[0059] It should be noted that the margin setting requirement can be set according to demand, for example, set to 10, 20, etc., and this embodiment does not limit this.

[0060] Step A24: When the horizontal component ring meets the margin setting requirement, detecting whether the vertical component ring has an unknown component ring deviation; It should be noted that if the horizontal component ring meets the margin setting requirements, for example, the margin setting requirements are that the horizontal component ring is greater than or equal to 10, then there is no need to allocate unknown component ring accuracy to the horizontal component ring, and continue to check whether there is an unknown component ring deviation in the vertical component ring.

[0061] In a specific implementation, when the lateral component ring meets or does not meet the margin setting requirements, the known component ring accuracy in the lateral component ring is set to an unknown quantity, and the lateral component ring in the preset component ring accuracy is executed to perform a second component ring accuracy allocation step.

[0062] If the transverse component rings do not meet the allowance setting requirements, that is, the transverse component rings are less than or equal to 10, then the unknown component ring accuracy of the transverse dimensional chain involved in the first component ring accuracy allocation is unknown. The remaining allocated unknown component ring accuracy is considered known, and the second component ring accuracy allocation is performed. After the second component ring accuracy allocation is completed, the vertical component rings are checked for unknown component ring deviations.

[0063] If the second component ring accuracy allocation is completed, the vertical component ring can be further detected to see if there is an unknown component ring deviation, and it can be determined whether a third component ring accuracy allocation is required.

[0064] Step A25: When there is no unknown component ring deviation in the vertical component ring, detecting whether the vertical component ring meets the margin setting requirement; In a specific implementation, if there is no unknown component ring deviation in the vertical component ring, it is calculated whether the vertical dimension chain meets the allowance setting requirements at this time.

[0065] It should be noted that when an unknown component ring deviation exists in the vertical component ring, a third component ring accuracy allocation is performed according to the vertical component ring in the preset component ring accuracy.

[0066] In the specific implementation, if there is an unknown component ring deviation in the vertical component ring, it means that the unknown component ring of the vertical dimension chain is not involved in the horizontal dimension chain, then the unknown component ring accuracy involving the vertical dimension chain in the second component ring accuracy allocation is an unknown quantity, and the remaining allocated unknown component ring accuracy is regarded as a known quantity, and the third component ring accuracy allocation is performed, that is, the unknown component ring deviation of the vertical component ring is allocated, and the vertical component ring in the preset component ring accuracy is specifically used for the third component ring accuracy allocation.

[0067] Step A26: When the vertical component ring meets the margin setting requirements, the assembly accuracy distribution is completed.

[0068] It should be noted that if the vertical component ring meets the margin setting requirements, there is no need to perform unknown component ring precision allocation on the vertical component ring. At this time, the assembly precision allocation of the multi-directional component ring is completed.

[0069] It should be noted that 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 performing a third component ring accuracy allocation based on the vertical component ring in the preset component ring accuracy is performed.

[0070] If the vertical component ring does not meet the margin setting requirements, it is necessary to continue to allocate the unknown component ring accuracy in the vertical component ring. Therefore, the known component ring accuracy in the vertical component ring is set to the unknown quantity, and the unknown quantity is allocated the third time using the vertical component ring accuracy in the preset component ring accuracy.

[0071] like Figure 7 As shown, Figure 7 The figure is a schematic diagram of the multi-directional accuracy allocation process. First, the first component ring accuracy allocation is performed based on the axial dimension chain. After the allocation is completed, the transverse dimension chain is detected to see if there is an unknown component ring deviation. If so, the unknown component ring is allocated for the second time based on the transverse dimension chain. After the allocation is completed, the vertical dimension chain is detected to see if there is an unknown component ring deviation. If so, the unknown component ring is allocated for the third time based on the vertical dimension chain. If the transverse dimension chain does not have an unknown component ring deviation, it is determined whether the transverse dimension chain meets the allowance setting requirements. If so, the step of detecting whether the vertical dimension chain has an unknown component ring deviation is executed. If not, the known component ring accuracy involved in the transverse dimension chain is set to an unknown value, and the step of performing the second component ring accuracy allocation for the unknown component ring based on the transverse dimension chain is executed. If the vertical dimension chain does not have an unknown component ring deviation, it is detected whether the vertical dimension chain meets the allowance setting requirements. If so, the allocation is completed. If not, the known component ring accuracy involved in the vertical dimension chain is set to an unknown value, and the step of performing the third component ring accuracy allocation for the unknown component ring based on the vertical dimension chain is executed to complete the multi-directional accuracy allocation index value of the component ring.

[0072] This embodiment provides a precision allocation design method for modular construction of ship sections. By clarifying the definitions of closed loops and component loops and establishing a dimension chain equation based on the construction process, the precision requirements of each assembly link can be accurately calculated to ensure that the precision allocation of each link meets the overall assembly goal, thereby achieving precise control of the modular construction of ship sections. By formulating a target dimension chain calculation strategy based on the number of component loops and the construction process, the precision allocation resources can be arranged more reasonably. By solving the dimension chain equation and obtaining the preset component loop precision, the manufacturing errors of each link can be effectively predicted and controlled, avoiding deviations in the final assembly due to error accumulation, thereby improving the assembly precision and quality of ship sections. Through accurate dimension chain calculation and precision allocation, the problem of difficult precision allocation of component loops caused by the coupling relationship of closed loops is solved, the problem of tolerance accumulation in the complex dimension chain of ships is solved, the docking precision between modules is significantly improved, and it is ensured that the construction of ship sections meets the design requirements.

[0073] Example 2: Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 8 , step S40 includes steps S401 to S405: Step S401: When the target dimension chain calculation strategy is a probability calculation strategy, obtain 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.

[0074] It should be noted that for the extreme value method, the upper and lower limit deviations of the ship's axial, lateral and vertical closed loops can be solved, and the deviations of all component loops reach the upper or lower deviation of the accuracy at the same time, that is, the accuracy variable of each process is the maximum or minimum value of the deviation, resulting in the closed loop reaching the maximum value of the accuracy deviation. Since the direction of offset and deflection is unknown, all component loops can be regarded as increasing loops.

[0075] Specifically, when the upper and lower limit deviation dimensions of the closed loop Q are met:

[0076] The lower limit deviation size of the closed loop Q is:

[0077] Where, is the standard deviation of the ring, and Represents the components of the ring The maximum and minimum values ​​of the deviation, is the transfer coefficient, satisfying ,in is the function of the dimension chain equation in the above formula.

[0078] For the probability method to solve the upper and lower deviations of the ship's axial, transverse and vertical closed loops, the distribution model of most component loops can be described by normal distribution. When some component loops are non-normally distributed, the relative distribution coefficient and distribution asymmetry coefficient can be applied for correction.

[0079] When the component rings are normally distributed, the relationship between the closed ring standard deviation and the component ring standard deviation can be expressed as:

[0080] When the component rings are non-normally distributed, the reliability coefficient is introduced :

[0081] The relationship between the closed loop standard deviation and the component loop standard deviation is:

[0082] The upper and lower deviation dimensions of the closed ring are:

[0083]

[0084] in, , when the composition ring is reversed based on the above method When the closed loop is a multi-directional offset of the module in the axial, lateral or vertical directions, there is a coupling relationship between the dimension chains in each direction. Therefore, the above formula can be used to calculate the accuracy of the unknown component loop according to the specific strategy.

[0085] In practice, when the target dimension chain calculation strategy is a probabilistic one, the accuracy of the unknown ring components of the axial dimension chain must be calculated. If the extreme value method is used to allocate accuracy, then stricter deviation requirements for each component ring during construction will be imposed, far exceeding the standard and existing deviation adjustment capabilities. This will place a significant burden on the overall design and construction of the ship, resulting in a waste of accuracy. Given the large number of component rings in the shafting process and their weak correlation, a probabilistic method with unclear component ring distribution is used to allocate accuracy.

[0086] The upper and lower limit deviations of the axial closed loop X are set at ±20mm. The axial closed loop variables are composed of 12 variables. The standard deviations of all basic variables xi are equal. The first sensitivity of each variable to the closed loop deviation is The upper and lower limits are equal, each variable is a random variable, each variable is independent and the circular distribution is unclear.

[0087] Step S402: determining an axial closed loop deviation control target based on the upper and lower limit deviations of the axial closed loop and the first sensitivity.

[0088] In a specific implementation, the axial closed loop deviation control target can be determined according to the above parameters, as shown in the following formula:

[0089] in, C is the reliability coefficient, is the first sensitivity, is the standard deviation of the ring, It is the control target of axial closed loop deviation.

[0090] Step S403: Calculating a reliability coefficient based on the axial closed-loop deviation control target, the first sensitivity, and the number of axial closed-loop variables.

[0091] In a specific implementation, when the axial component rings are non-normally distributed, a reliability coefficient C is introduced. Since there are 12 variables, n=12, the reliability coefficient is expressed as follows:

[0092] Step S404: solving the axial closed loop deviation control target according to the reliability coefficient to obtain the axial component ring standard deviation.

[0093] Substitute the reliability coefficient into the above formula for the axial closed loop deviation control target to obtain the axial component ring standard deviation =3.68mm.

[0094] Step S405: obtaining a preset axial component ring accuracy based on the axial component ring standard deviation.

[0095] In a specific implementation, the standard deviation of the axial ring is obtained. =3.68mm, the final axial component ring accuracy can be determined based on the standard deviation of the subsequent component rings.

[0096] In a feasible implementation, step S405 may include steps B11 to B14: Step B11: obtaining the initial component ring axial deviation based on the axial component ring standard deviation; In a specific implementation, the standard deviation of the axial component ring can be used as the axial deviation of the initial component ring, that is, x i =±3.68mm, after rounding to the integer, the initial ring axial deviation x i =±3.5mm.

[0097] Step B12: Determine the assembly axial deviation based on engineering experience; Step B13: determining the setting deviation of multiple axial component rings in the axial component ring based on the assembly axial deviation; It should be noted that in order to ensure the rationality of the accuracy distribution of the unknown component rings, after determining the initial unknown component ring accuracy, communication can be carried out with the equipment production unit and the final assembly manufacturing unit to verify whether the accuracy distribution of the unknown component rings is reasonable based on the existing engineering experience, so as to adjust the accuracy level of the unknown component rings. Therefore, the assembly axial deviation can be determined based on engineering experience. For example, the assembly axial deviation is controlled at ±1mm, so the setting deviation of multiple axial component rings in the axial component ring is x3=x5=x7=x9=x 10 =x 11 =±1mm.

[0098] Step B14: Return 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 deviations set for the multiple axial component rings to obtain a preset axial component ring accuracy.

[0099] In the specific implementation, after obtaining the setting deviations of multiple axial component rings, the step of reversely solving the axial closed loop deviation control target can be returned to calculate the axial component ring accuracy again to obtain the final preset axial component ring accuracy. The final design is x1=x4=x6=x8=x 12 =±5mm.

[0100] This embodiment utilizes a probabilistic calculation strategy to precisely optimize the accuracy distribution of the axial closed loop under the influence of multiple variables, ensuring that each step in the modular construction of ship sections is within the optimal accuracy range. The calculated reliability coefficient helps assess and enhance process reliability, reduce potential risks in production, and improve production stability. By solving the deviation control target, error sources can be systematically analyzed and optimized, avoiding error accumulation during the manufacturing process and improving final product quality. Dynamic optimization can be performed based on changes in different variables and conditions during the actual construction process, adapting to different production environments and requirements.

[0101] Example 3: Based on the first and second embodiments of the present application, in the third embodiment of the present application, the same or similar contents as those in the first embodiment can be referred to the above introduction and will not be described in detail later. Figure 9 , step S40 includes steps S401' to S406': Step S401 ′: when the target dimension chain calculation strategy is the extreme value method calculation strategy, obtain 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.

[0102] It should be noted that when the target dimensional chain calculation strategy is the extreme value method, the extreme value method is used to distribute the accuracy calculation because engineering construction requirements place more stringent requirements on the deviation of each component link. When solving the accuracy of unknown component links based on the axial dimensional chain, all component links involved in the transverse dimensional chain are not solved, so the accuracy of all variables needs to be distributed.

[0103] In the specific implementation, the upper and lower limit deviations of the transverse closed loop Y are controlled at ±20mm. The transverse closed loop is composed of 12 variables, each variable has equal upper and lower limits, and each variable is a random variable. The second sensitivity of each variable to the transverse closed loop deviation can be directly set.

[0104] Step S402 ′: determining a lateral closed loop deviation control target based on the lateral closed loop upper and lower limit deviations and the second sensitivity.

[0105] In a specific implementation, the lateral closed loop deviation control target can be determined based on the upper and lower limit deviations of the lateral closed loop and the second sensitivity. Specifically, when the upper limit deviation size of the closed loop Y is met:

[0106] The lower limit deviation size of the closed loop Y is:

[0107] and Represents the components of the ring The maximum and minimum values ​​of the deviation, The second sensitivity.

[0108] Step S403 ′: solving the lateral closed loop deviation control target to obtain the lateral component loop standard deviation.

[0109] In the specific implementation, the lateral closed loop deviation control target can be solved to obtain the lateral component loop standard deviation =0.28.

[0110] Step S404 ′: determining the assembly lateral deviation based on engineering experience.

[0111] It should be noted that, based on engineering experience, the shaft deflection per meter is controlled at ±0.1 mm, so the assembly lateral deviation is ±0.1 mm.

[0112] Step S405 ′: determining the setting deviations of multiple transverse component rings in the transverse component ring based on the assembly transverse deviation.

[0113] Specifically, after obtaining the assembly lateral deviation, the setting deviation of some lateral component rings in the lateral component ring can be obtained, that is, θ1=θ2=θ3=θ4=θ5=±0.1mm.

[0114] Step S406 ′: returning to the step of solving the lateral closed loop deviation control target to obtain the lateral component ring standard deviation based on the deviations set for the multiple lateral component rings, and obtaining a preset lateral component ring accuracy.

[0115] In the specific implementation, after obtaining the setting deviation of some horizontal component rings, the above formula can be substituted to solve it, so as to obtain the preset horizontal component ring accuracy of the final design, that is, y1=y3=y5=y7=y9=y 11 =y 13 =±1.5mm.

[0116] It should be noted that after solving the accuracy of the unknown component loops of the transverse dimension chain, the accuracy of the unknown component loops of the vertical dimension chain is calculated using the same process as that of the unknown component loops of the transverse dimension chain. When solving the accuracy of the unknown component loops based on the transverse dimension chain, some of the component loops of the vertical dimension chain involved have been solved, so the accuracy of the unsolved variables needs to be allocated.

[0117] Therefore, step S40 further includes: When the target dimension chain calculation strategy is the extreme value method calculation strategy, obtain 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; determine the vertical closed loop deviation control target based on the upper and lower limit deviations of the vertical closed loop and the third sensitivity; obtain multiple vertical component ring setting deviations in the vertical component ring, and the vertical component ring setting deviations are solved deviations; solve the vertical closed loop deviation control target according to the multiple vertical component ring setting deviations to obtain the preset vertical component ring accuracy.

[0118] It should be noted that the upper limit deviation of the vertical closed loop is controlled at ±15mm. The closed loop consists of 12 variables. The extreme value method is used. The upper and lower limits of each variable are equal. Each variable is a random variable. Therefore, the vertical closed loop deviation control target can be determined based on the upper and lower limit deviations of the vertical closed loop and the third sensitivity. The final continuous closed loop deviation control target is: When the upper limit deviation dimension of the closed loop Z is met:

[0119] When the Z lower limit deviation dimension of the closed loop is met:

[0120] By determining the engineering experience, the setting deviation of multiple vertical component rings in the vertical component ring is obtained as θ1=θ2=θ3=θ4=θ5=±0.1mm. Therefore, the setting deviation of multiple vertical component rings is substituted into the above formula for calculation. The final design of the preset vertical component ring accuracy is z1=z3=z5=z7=z9=z 11 =z 13 =±1mm.

[0121] In this way, the accuracy of the unknown component rings in each direction can be obtained, thereby realizing the distribution of the accuracy of the component rings.

[0122] like Figure 10 As shown, Figure 10 This is a flow chart of the precision allocation for modular construction of ship sections. First, the component rings and closed rings are determined. Then, the dimension chain equation is established based on the component rings and closed rings. At the same time, the engineering experience method and numerical analysis method are used to reversely solve the equation based on the dimension chain equation. The deviations of each component ring are adjusted, and the unknown component ring deviations are allocated. The dimension chain equation is solved by the extreme value method or the probability method, and it is judged whether the limit deviation is less than or equal to the allowable margin. If not, the component ring deviation is further adjusted. If so, the precision index value of each component ring is allocated.

[0123] This embodiment effectively controls the accuracy of the transverse closed loop through multiple calculations and feedback adjustments, ensuring that all aspects of the final product meet the design requirements. By introducing a second sensitivity analysis, the complex nonlinear relationship between variables can be effectively considered, providing a more accurate basis for precision control. Combining engineering experience with calculation strategies ensures that precision 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.

[0124] 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 accuracy distribution method for modular construction of ship sections of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0125] The present application also provides a device for allocating precision in modular construction of ship sections, the device comprising: The determination module is used to determine the closed loop and the component loop according to the modular construction process of the ship block.

[0126] An establishing module is used to establish a dimension chain equation according to the closed loop and the component loops.

[0127] The determination module is further used to determine a target dimension chain calculation strategy based on the number of component rings and the construction process flow.

[0128] A solving module is used to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component ring accuracy.

[0129] The allocation module is used to allocate assembly accuracy according to the preset component ring accuracy.

[0130] The device for allocating precision for modular construction of ship sections provided in this application adopts the design method for allocating precision for modular construction of ship sections in the above-mentioned embodiment, which can solve the technical problem that large deviations in assembly precision affect the overall size and strength of ship sections and may also cause deformation or fatigue of the structure. Compared with the prior art, the beneficial effects of the device for allocating precision for modular construction of ship sections provided in this application are the same as the beneficial effects of the method for allocating precision for modular construction of ship sections provided in the above-mentioned embodiment, and the other technical features of the device for allocating precision for modular construction of ship sections are the same as the features disclosed in the above-mentioned embodiment method, and are not described in detail here.

[0131] The present application provides a device for allocating precision in the modular construction of ship sections, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the assembly precision allocation method for modular construction of ship sections in the above-mentioned embodiment one.

[0132] The equipment for allocating precision for modular construction of ship sections provided in this application adopts the design method for allocating precision for modular construction of ship sections in the above-mentioned embodiment, which can solve the technical problem that large deviations in assembly precision affect the overall size and strength of ship sections and may also cause deformation or fatigue of the structure. Compared with the prior art, the beneficial effects of the equipment for allocating precision for modular construction of ship sections provided in this application are the same as the beneficial effects of the method for allocating precision for modular construction of ship sections provided in the above-mentioned embodiment, and the other technical features of the equipment for allocating precision for modular construction of ship sections are the same as the features disclosed in the method of the previous embodiment, and are not described in detail here.

[0133] It should be understood that the various parts disclosed in this application can be implemented using 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.

[0134] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0135] The present application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, and the computer-readable program instructions are used to execute the assembly accuracy distribution method for modular construction of ship sections in the above-mentioned embodiment.

[0136] The computer-readable storage medium provided in this application is a computer-readable storage medium storing computer-readable program instructions (i.e., a computer program) for executing the aforementioned method for allocating assembly precision for modular ship section construction. This method can address the technical issue of large deviations in assembly precision affecting the overall size and strength of ship sections, and potentially causing structural deformation or fatigue. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are similar to those of the method for allocating assembly precision for modular ship section construction provided in the aforementioned embodiments, and are not further elaborated upon here.

[0137] The present application also provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the assembly accuracy allocation method for modular construction of ship sections as described above.

[0138] The computer program product provided in this application can address the technical problem of large deviations in assembly precision affecting the overall size and strength of ship sections, potentially leading to structural deformation or fatigue. Compared to existing technologies, the beneficial effects of the computer program product provided in this application are similar to those of the assembly precision allocation method for modular construction of ship sections provided in the aforementioned embodiments, and are not further elaborated here.

[0139] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for designing modular construction precision distribution of ship sections, characterized by: The assembly accuracy distribution method for modular construction of ship sections includes: Determine the closed loop and component loops based on the modular construction process of the ship block; Establishing a dimension chain equation based on the closed loop and the component loops; Determining a target dimension chain calculation strategy based on the number of component rings and the construction process flow; Solving the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring accuracy; The assembly precision is distributed according to the preset component ring precision.

2. The method according to claim 1, wherein The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component ring accuracy includes: When the target dimension chain calculation strategy is a probability calculation strategy, obtaining 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; Determining an axial closed loop deviation control target based on the axial closed loop upper and lower limit deviations and the first sensitivity; calculating a reliability coefficient based on the axial closed loop deviation control target, the first sensitivity, and the number of axial closed loop variables; Solving the axial closed loop deviation control target according to the reliability coefficient to obtain the axial component ring standard deviation; A preset axial component ring accuracy is obtained based on the axial component ring standard deviation.

3. The method according to claim 2, wherein The step of obtaining a preset axial component ring accuracy based on the axial component ring standard deviation includes: Obtaining an initial component ring axial deviation based on the axial component ring standard deviation; Determine the assembly axial deviation based on engineering experience; determining setting deviations of a plurality of axial component rings in the axial component ring based on the assembly axial deviation; 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 a plurality of axial component ring setting deviations, obtains a preset axial component ring accuracy.

4. The method according to claim 1, wherein The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component ring accuracy includes: When the target dimension chain calculation strategy is the extreme value method calculation strategy, obtaining 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; Determining a lateral closed loop deviation control target based on the lateral closed loop upper and lower limit deviations and the second sensitivity; Solving the lateral closed loop deviation control target to obtain the lateral component loop standard deviation; Determine assembly lateral deviation based on engineering experience; determining a setting deviation of a plurality of lateral component rings in the lateral component ring based on the assembly lateral deviation; The step of solving the lateral closed loop deviation control target to obtain the lateral component ring standard deviation is returned based on the deviation setting of multiple lateral component rings to obtain the preset lateral component ring accuracy.

5. The method according to claim 1, wherein The step of solving the dimension chain equation according to the target dimension chain calculation strategy to obtain the preset component ring accuracy includes: When the target dimension chain calculation strategy is the extreme value method calculation strategy, obtaining 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; Determining a vertical closed loop deviation control target based on the upper and lower limit deviations of the vertical closed loop and the third sensitivity; Acquire multiple vertical component ring setting deviations in the vertical component ring, wherein the vertical component ring setting deviations are solved deviations; The vertical closed loop deviation control target is solved according to the setting deviations of multiple vertical component loops to obtain the preset vertical component loop accuracy.

6. The method according to claim 1, wherein The step of allocating assembly accuracy according to the preset component ring accuracy includes: Performing a first component ring accuracy allocation based on the axial component ring using the axial component ring accuracy in the preset component ring accuracy; When the first component ring accuracy allocation is completed, detect whether there is an unknown component ring deviation in the horizontal component ring; When there is no unknown component ring deviation in the horizontal component ring, detecting whether the horizontal component ring meets the margin setting requirement; When the horizontal component ring meets the margin setting requirements, detecting whether the vertical component ring has an unknown component ring deviation; When there is no unknown component ring deviation in the vertical component ring, detecting whether the vertical component ring meets the margin setting requirement; When the vertical component ring meets the margin setting requirement, the assembly accuracy distribution is completed.

7. The method according to claim 6, wherein The method further comprises: When an unknown component ring deviation exists in the horizontal component ring, a second component ring accuracy allocation is performed according to the horizontal component ring in the preset component ring accuracy; When the horizontal component ring meets or does not meet the margin setting requirement, the known component ring accuracy in the horizontal component ring is set to an unknown value, and the horizontal component ring in the preset component ring accuracy is performed to perform a second component ring accuracy allocation step; When the second component ring accuracy allocation is completed, the vertical component ring is checked for unknown component ring deviations; When an unknown component ring deviation exists in the vertical component ring, a third component ring accuracy allocation is performed according to the vertical component ring in the preset component ring accuracy; When the vertical component ring does not meet the margin setting requirement, the known component ring accuracy in the vertical component ring is set to an unknown value, and a step of performing a third component ring accuracy allocation according to the vertical component ring in the preset component ring accuracy is performed.

8. The method according to claim 1, wherein The steps of determining the closed loop and the component loop according to the modular construction process of the ship section include: Determine the preset shafting module of the ship according to the modular construction process of the ship section; Obtaining the axial offset, lateral offset, and vertical offset of the preset shafting module of the ship; An axial closed loop is obtained according to the axial offset, a transverse closed loop is obtained according to the transverse offset, and a vertical closed loop is obtained according to the vertical offset; Obtaining axial deviations of multiple variables of the axial closed ring to obtain an axial component ring; Obtaining lateral deviations of multiple variables of the lateral closed loop to obtain a lateral component loop; Obtaining vertical deviations of multiple variables of the vertical closed loop to obtain a vertical component loop; Obtaining a closed ring according to the axial closed ring, the transverse closed ring, and the vertical closed ring; A component ring is obtained according to the axial component ring, the transverse component ring and the vertical component ring.

9. A precision distribution device for modular construction of ship sections, characterized in that: The device comprises: A determination module is used to determine the closed loop and the component loop according to the modular construction process of the ship block; An establishing module, for establishing a dimension chain equation according to the closed loop and the component loops; 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 flow; A solving module, configured to solve the dimension chain equation according to the target dimension chain calculation strategy to obtain a preset component ring accuracy; The allocation module is used to allocate assembly accuracy according to the preset component ring accuracy.

10. A precision distribution 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, wherein the computer program is configured to implement the steps of the modular construction precision distribution design method for ship sections according to any one of claims 1 to 8.

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