Ship group plan scheduling method

Abstract

The invention belongs to the technical field of ship construction, and provides a ship sub-assembly plan scheduling method, which comprises the following steps: dividing sub-assembly products into a plurality of sub-assembly groups, endowing a first identification code and binding corresponding structure type information; on the basis of the segmented objects needing production scheduling, corresponding object products are obtained, and theoretical construction time consumption is calculated; dividing the object products into a plurality of production takt groups according to a preset man-hour fluctuation range, and endowing the production takt groups with second identification codes; and dividing the object product into a plurality of product packages by using the first identification code and the second identification code based on a preset progress check period and the number of working procedure operators, sub-packaging the product packages into a plurality of part packages, and performing production scheduling on the part packages so as to perform a small assembly working procedure on the object product to obtain corresponding small assembly products. By means of the method, the product combination suitable for rhythm production is constructed, the purpose that the same person produces the same product in the same site is achieved, the ship assembly tends to be the standardized operation process, and the ship building efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the shipbuilding technical field, in particular to a ship small assembly planning scheduling method. BACKGROUND

[0002] The ship small assembly is a production stage of the hull assembly in the ship manufacturing process, which is defined as a production process of combining two or more than two parts through processes such as assembly and welding to process into a basic component, such as manufacturing T-shaped material, elbow plate reinforcement, rib plate reinforcement, etc. Due to the huge volume of ship engineering, the ship small assembly product has the characteristics of large quantity and various types, so the large-scale production mode is generally used in the actual production process. This way, multiple small assembly products are laid out on the site, and workers assemble and weld them one by one. After the production of a batch of products is completed, they are transferred.

[0003] At present, the shipbuilding industry generally adopts a three-level planning system, that is, a prior large schedule-middle schedule-small schedule plan is adopted to manage the production progress of the product, and the granularity of the plan can be to the section (large assembly) level or the middle assembly level. Due to the characteristics of large quantity of small assembly and large-scale production, it is difficult to implement fine planning management of small assembly products under the current technical conditions. The internal planning control of small assembly products is generally controlled by the on-site construction personnel. This extensive planning management mode is easy to cause management confusion in the entire small assembly production link, reduces the production efficiency, prolongs the entire shipbuilding cycle, and is not conducive to the rapid construction of the ship. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a ship small assembly planning scheduling method, which can effectively improve the production efficiency of the ship small assembly link.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a ship small assembly planning scheduling method, comprising the following steps:

[0006] According to the structural characteristics of the small assembly product, the small assembly product is classified to obtain a plurality of small assembly groups, and a first identification code is assigned to each small assembly group;

[0007] Obtain the structure type information of the small assembly product and bind it with the corresponding small assembly product;

[0008] Based on the section object that needs to be produced and scheduled, the corresponding object product is obtained;

[0009] According to the structure type information of the object product, the theoretical construction time of the object product is calculated;

[0010] According to the preset time fluctuation amplitude and the theoretical construction time consumption, the production rhythm of the object product is classified to obtain a plurality of production rhythm groups, and a second identification code is given to each production rhythm group;

[0011] According to the preset progress checking period and the number of process operation personnel, the object product is divided into a plurality of product packages by using the first identification code and the second identification code, and a plurality of part packages are obtained by packing parts of each product package;

[0012] The part packages are scheduled for production to obtain corresponding sub-assembly products by sub-assembly process of the object product.

[0013] Optionally, the theoretical construction time consumption of the object product is calculated, including the following steps:

[0014] Obtain the structure type information of the object product;

[0015] According to the structure type information of the object product, the standard operation model of the object product is obtained from the process database;

[0016] According to the standard operation model, the corresponding process parameters are obtained;

[0017] Based on the process parameters, the theoretical construction time consumption of the object product is calculated.

[0018] Optionally, the production rhythm of the object product is classified, including the following steps:

[0019] Obtain the preset time fluctuation amplitude;

[0020] Based on the time fluctuation amplitude and the theoretical construction time consumption of the object product, the maximum construction time consumption and the minimum construction time consumption of each object product are calculated;

[0021] According to the maximum construction time consumption and the minimum construction time consumption, the construction time interval of the object product is determined;

[0022] The construction time interval is taken as the horizontal axis, and the number of object products in the construction time interval is taken as the vertical axis to establish a time consumption distribution histogram;

[0023] The construction time interval is split to obtain a plurality of construction time subintervals;

[0024] According to the construction time subinterval, the object product is divided into a plurality of production rhythm groups.

[0025] Optionally, in the step of splitting the construction time interval, the expected value μ of the i-th construction time subinterval C Ti ​Ti satisfies |x-μ Ti | / μ Ti ≤P;

[0026] wherein, i is a positive integer, x is the theoretical construction time of any object product in the i Ti th construction time sub-interval C

[0027] Optionally, the product package division of the object product is performed to obtain a plurality of product packages, and the part package packaging of each product package is performed to obtain a plurality of part packages, including the following steps:

[0028] The progress inspection cycle, the number of workers in the process operation, and the daily operation time are obtained;

[0029] The daily operation time is divided into n operation time sub-intervals;

[0030] According to the first identification code and the second identification code, the product objects are classified to obtain a plurality of product packages, and each product package is assigned a product package category code;

[0031] The expected value of the theoretical construction time of the object product in each product package is calculated;

[0032] According to the progress inspection cycle, the number of workers in the process operation, and the expected value of the theoretical construction time of the object product in the product package, the target number of objects in each product package is calculated;

[0033] According to the target number, each product package is packaged into a plurality of part packages, and each part package is assigned a part tray code;

[0034] wherein, n is a positive integer, each product package has a plurality of part packages, and the number of object products in the part package is less than or equal to the target number.

[0035] Optionally, the step of packaging each product package into a plurality of part packages further includes:

[0036] The part package is labeled with packaging detail information, and the packaging detail information includes product quantity information and occupancy rate of the part package.

[0037] Optionally, the production scheduling of the part package includes the following steps:

[0038] According to the part tray code, the part package is sent to the corresponding production site;

[0039] The object products in the part package located in the production site are centrally arranged in the production site to perform the sub-assembly process.

[0040] Optionally, after the step of performing part packaging for each product package to obtain a plurality of part packages, the method further comprises the following steps:

[0041] calculating a planned production cycle of the product package

[0042] wherein μ1 is the expected value of the theoretical construction time of the object products in each product package, c is the occupancy rate of the part package, m2 is the actual number of workers, m1 is the number of workers in the process, and H is the target number of parts.

[0043] Optionally, the step of performing production scheduling for the part package further comprises the following steps:

[0044] obtaining a start processing time of the product package;

[0045] calculating a planned completion time of the product package according to the planned production cycle of the product package and the start processing time;

[0046] determining an inspection interval of the product package according to the planned completion time of the product package.

[0047] Optionally, after the step of performing production scheduling for the part package, the method further comprises the following steps:

[0048] obtaining an actual start processing time and an actual completion time of each product package;

[0049] when the current time is in the inspection interval, performing inspection on the actual completion state of the product package in the inspection interval;

[0050] after the inspection on the product package is completed, judging whether the processing time abnormality of the product package that is not completed on time is located in the time range between the start processing time and the planned completion time.

[0051] As described above, compared with the prior art, the ship sub-assembly planning and scheduling method provided by the present application has at least the following beneficial effects:

[0052] In the method, the sub-assemblies are divided into several sub-assembly groups based on the structural characteristics of the sub-assemblies, the required sub-assemblies in the sections are divided into several production rhythm groups according to the theoretical construction time of the target product, the target product is classified through the first identification code and the second identification code, several product packages are obtained, the type information and the production rhythm information of the sub-assemblies are associated with each product package, and then a similar structure product combination capable of being produced in rhythm is constructed, the purpose of producing the same or similar products in the same place by the same or similar personnel is achieved, the sub-assembly link of the ship tends to be a standardized work flow, and the construction efficiency of the ship is effectively improved; and when the actual number of workers is the same as the number of workers in the process, the standard production rhythm of a product package can be completed in one point inspection period, the product scheduling and dispatching are performed in this way, the sub-assembly of the ship can be produced in rhythm, the centralized arrangement of the part packages in the production site is combined, which helps to reduce the idle rate of equipment, reduce material waste and transportation cost, facilitate the plan management, adjustment and improvement of the sub-assembly production link of the ship, and thus the construction efficiency of the ship is improved, the production cost is reduced, and the rapid construction of the ship is realized. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0054] Figure 1 A flowchart of a ship sub-assembly planning scheduling method provided by the embodiments of the present application is shown.

[0055] Figure 2 A flowchart of calculating the theoretical construction time of a target product provided by the embodiments of the present application is shown.

[0056] Figure 3 A flowchart of classifying the target product by production rhythm provided by the embodiments of the present application is shown.

[0057] Figure 4 A flowchart of dividing the target product into several product packages and packing the product packages into several part packages provided by the embodiments of the present application is shown.

[0058] Figure 5 A flowchart of production scheduling of the part packages provided by the embodiments of the present application is shown.

[0059] Figure 6A flowchart schematically showing another ship sub-assembly plan scheduling method provided by the present application is shown.

[0060] Figure 7 A flowchart schematically showing a product package actual completion state inspection process in the ship sub-assembly plan scheduling method shown. Figure 6 DETAILED DESCRIPTION

[0061] In order to make the technical purposes, technical solutions and technical effects of the present application clearer, the technical solutions of the present application will be described clearly and completely in combination with embodiments below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0062] Therefore, the detailed description of the embodiments of the present application below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application. In addition, the terms “first”, “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0063] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] In the description of the present application, unless explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood broadly, for example, can be fixed connection, or can be detachable connection. In addition, the description of the terms “one embodiment”, “some embodiments”, “illustrative embodiment”, “example”, “specific example” or “some examples” means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0065] ​In the ship sub-assembly production stage, due to the large number and variety of sub-assembly products, the whole ship sub-assembly production link lacks a unified planning and scheduling method to plan and control the production and processing of numerous sub-assembly products in the ship sub-assembly production link, which easily leads to low work efficiency of the ship sub-assembly and reduces the production efficiency in the shipbuilding process.

[0066] To solve the above problems in the prior art, the embodiment provides a ship sub-assembly planning and scheduling method for guiding the construction work of sub-assembly products in the ship sub-assembly production stage to improve the shipbuilding efficiency.

[0067] With reference to Figure 1 The ship sub-assembly planning and scheduling method includes steps S1 to S7, specifically including the following steps:

[0068] S1, according to the structural characteristics of the sub-assembly products, classifying the sub-assembly products to obtain a plurality of sub-assembly groups, and giving each sub-assembly group a first identification code;

[0069] S2, obtaining the structure type information of the sub-assembly products and binding with the corresponding sub-assembly products;

[0070] S3, based on the segmented object needing production scheduling, obtaining the corresponding object product;

[0071] S4, according to the structure type information of the object product, calculating the theoretical construction time consumption of the object product;

[0072] S5, according to the preset work time fluctuation range and the theoretical construction time consumption, classifying the object product by production rhythm to obtain a plurality of production rhythm groups, and giving each production rhythm group a second identification code;

[0073] S6, based on the preset progress checking period and the number of process operation personnel, using the first identification code and the second identification code to divide the object product into a plurality of product packages, and packing each product package into a plurality of part packages;

[0074] S7, scheduling the production of the part package to obtain the corresponding sub-assembly product by the sub-assembly process of the object product.

[0075] In this embodiment, based on the structural characteristics of the sub-assembly products, the sub-assembly products are divided into several sub-assembly groups, the required sub-assembly products in each group are divided into several production rhythm groups according to the theoretical construction time of the target product, the target products are classified by the first identification code and the second identification code, several product packages are obtained, and the similar structure product combination capable of rhythm production is constructed, thereby achieving the purpose of producing the same or similar products in the same place by the same personnel or similar personnel, making the ship sub-assembly process close to the standardized operation process, and effectively improving the shipbuilding efficiency; and when the actual operation number is the same as the process operation number, the standard production rhythm of a product package can be completed in one point inspection period, the product scheduling and dispatching are performed, the ship sub-assembly can be produced in rhythm, and the parts package is arranged in the production site, which helps to reduce the equipment idle rate, reduce material waste and transportation cost, facilitate the plan management and improvement of the ship sub-assembly production process, and thus the rapid construction of the ship can be ensured and the production cost can be reduced.

[0076] In step S1, according to the structural characteristics of the sub-assembly products, the sub-assembly products are classified to obtain several sub-assembly groups, and the sub-assembly products in each group have the same or similar structural characteristics.

[0077] In optional embodiments, the several sub-assembly groups may, for example, include "elbow plate", "sheet", "frame", "T section", "other", and the like, the sub-assembly products with single plate and single bar structure can be divided into "elbow plate", the sub-assembly products with single plate and multi-bar single surface structure can be divided into "sheet", the sub-assembly products with single plate and multi-bar surface structure can be divided into "frame", the sub-assembly products with long straight web and surface structure can be divided into "T section", and the sub-assembly products with complex structure can be divided into "other". It should be noted that the above division method is only used to illustrate the scheme of the embodiment, and is not a limitation on the scheme to be protected by the present application. In step S1, the sub-assembly products can also use other suitable division methods.

[0078] In step S1 of the optional embodiment, a first identification code is given to each sub-assembly group. Specifically, for example, the sub-assembly group "elbow plate" can be given a first identification code "A", the sub-assembly group "sheet" can be given a first identification code "B", the sub-assembly group "T section" can be given a first identification code "C", and the sub-assembly group "other" can be given a first identification code "D". Alternatively, other suitable first identification codes can also be used in step S1 of the embodiment, and the embodiment is not limited thereto.

[0079] In step S2, the structural type information of the sub-assembly products is obtained, and the structural type information is bound to the corresponding sub-assembly products.

[0080] In an optional embodiment, in the step of acquiring the structure type information of the small assembly product, a model of the small assembly product can be generated based on the pre-defined structure classification parameters in the production design modeling link of the small assembly product, and the model is bound with the structure type information.

[0081] In an optional embodiment, in the step of acquiring the structure type information of the small assembly product, the structure type information of each small assembly product can be obtained by data analysis on the three-dimensional model of the small assembly product.

[0082] In step S3, based on the segmented (large assembly) object requiring production scheduling, the object product required by the segmented object requiring production scheduling is acquired. Optionally, all object products can be acquired from the BOM according to the segmented object requiring production scheduling. The object product corresponds to the small assembly product and can include one or more small assembly parts. After the small assembly parts of the same object product are subjected to small assembly processes, the corresponding small assembly product is obtained.

[0083] In step S4, the theoretical construction time of the object product is calculated according to the structure type information of the object product. The object product can be composed of one or more small assembly parts, and the one or more small assembly parts form a small assembly product after welding or other required process(es). The theoretical processing time of the object product is the theoretical construction time.

[0084] In an optional embodiment, referring to Figure 2 , the step S4 of calculating the theoretical construction time of the object product includes steps S41 to S44, which are described as follows.

[0085] S41, acquire the structure type information of the object product. The structure type information of the object product is the structure type information of the corresponding small assembly product.

[0086] S42, acquire the standard operation model of the object product from the process database according to the structure type information of the object product. The standard operation model can be understood as the standard operation model of the process involved in the manufacturing link of the object product, such as the standard operation model of welding.

[0087] S43, acquire the corresponding process parameters according to the standard operation model.

[0088] S44, calculate the theoretical construction time of the object product based on the process parameters.

[0089] Further, one of the object products, for example, is the elbow plate sub-assembly product A, according to the structure type information of the object product, it is obtained that the object product includes the rib plate with the material DH32 and the specification FL150*12mm, and the bottom plate with the material DH32 and the specification 738*350*12mm, and a weld with a 4.5m double-sided welding weld leg is generated. Based on the structure type information, the welding process parameters of the material DH32, the thickness of 12mm and the weld leg of 4.5mm are obtained, which can include welding time, welding current, welding speed, etc.; based on the obtained welding process parameters, the theoretical construction time of the object product is calculated.

[0090] In step S5, based on the preset work time fluctuation range and the theoretical construction time calculated in the foregoing steps, the production rhythm of the object product is classified, and the object product is divided into a plurality of production rhythm groups, and each production rhythm group is marked by using a second identification code. Optionally, referring to Figure 3 , the production rhythm classification of the object product in step S5 is performed, including steps S51 to S56, which are specifically described as follows.

[0091] S51, obtain the preset work time fluctuation range. The work time fluctuation range means the maximum difference that can be allowed between the actual construction time and the theoretical construction time of the object product. The work time fluctuation range can be preset, and the specific value can be set according to actual needs.

[0092] S52, based on the work time fluctuation range and the theoretical construction time of the object product, the maximum construction time and the minimum construction time of each object product are calculated. Specifically, the sum of the theoretical construction time of each object product and the work time fluctuation range can be taken as the maximum construction time, and the difference between the theoretical construction time of each object product and the work time fluctuation range can be taken as the minimum construction time.

[0093] S53, determine the construction time interval of the object product according to the maximum construction time and the minimum construction time. Specifically, the time interval between the minimum construction time with the minimum value and the maximum construction time with the maximum value in all object products can be taken as the construction time interval. The construction time interval can also express to what extent the operation time is accurate, for example, "hour", "minute", "second".

[0094] S54, establish a time consumption distribution histogram with the construction time interval as the horizontal axis and the number of object products in the construction time interval as the vertical axis. The horizontal coordinate of the time consumption distribution histogram is time, and the vertical coordinate is the number of object products.

[0095] S55, interval splitting is performed on the construction time interval to obtain a plurality of construction time sub-intervals. Specifically, the construction time interval can be split according to a specific rule according to the minimum value and the maximum value of the construction time interval to obtain a plurality of construction time sub-intervals.

[0096] S56, according to the construction time sub-interval, the object product is divided into a plurality of production rhythm groups. Specifically, the object products in the same construction time sub-interval are taken as a production rhythm group, and then the object products are divided into a plurality of production rhythm groups.

[0097] Further, the step of performing interval splitting on the construction time interval satisfies the following fluctuation amplitude requirement: the expected value μ Ti of the i-th construction time sub-interval C Ti satisfies |x-μ Ti | / μ Ti ≤P, that is, wherein i is a positive integer, x is the theoretical construction time of any object product in the i-th construction time sub-interval C Ti , and P is the fluctuation amplitude of working hours. The calculation method of the expected value μ Ti of the i-th construction time sub-interval C Ti can refer to the calculation method of mathematical expectation in the prior art.

[0098] In an optional embodiment, after the step S5 of performing interval splitting on the construction time interval is completed, the following steps are further included: recording the start value, end value and expected value of each construction time sub-interval C Ti , and all the object products contained therein.

[0099] For actual production management activities, under the condition of satisfying the above fluctuation amplitude requirement, the fewer the number of object products in the construction time sub-interval, the more convenient the management is. Therefore, in step S5, the splitting of the construction time interval can be optimized by using a sliding window or a genetic algorithm. According to the interval splitting of the construction time interval according to the fluctuation amplitude requirement, it is helpful to construct a similar structure product combination that can be produced in rhythm, so as to realize the purpose of producing the same or similar products by the same personnel or similar personnel in the same place, make the shipbuilding small group link approach to the standardized work flow, and facilitate the management in the production process, and improve the shipbuilding efficiency.

[0100] In step S6, according to the pre-set progress checking period and the number of process operation personnel, the product package that can support rhythm production is divided by using the first identification code and the second identification code to obtain a plurality of product packages, and the product package is packed into a plurality of part packages. Optionally, refer to Figure 4The step of performing product package division on the object products in step S6 to obtain a plurality of product packages and performing part package packaging on each product package to obtain a plurality of part packages includes steps S61 to S66, which are described in detail as follows.

[0101] S61, obtain the progress inspection period, the number of process operation personnel, and the daily operation time. The progress inspection period is set according to the daily operation time to divide the daily operation time into an integer number of time intervals, and the number of process operation personnel can be set according to the production personnel arrangement on the day.

[0102] S62, divide the daily operation time into n operation time subintervals. Specifically, n is a positive integer, the daily operation time is for example 8 hours, the progress inspection period can be set to 1 h, 2 h, or 4 h, and other suitable values. The operation time subintervals are denoted as [T k ,T k-1 ), the progress inspection period is denoted as D1, and the non-operation time within the daily operation time is denoted as D2. Then, T k can be expressed as:

[0103]

[0104] wherein T start is the start time of the daily operation time, and k is an integer greater than or equal to 0.

[0105] Further, the daily operation time is for example from 8:00 to 17:00, wherein 11:30-12:30 is the lunch break time, and the progress inspection period D1 is set to 2 h. Then, [T k ,T k-1 ) can be expressed as: [8:00-10:00), [10:00-13:00), [13:00-15:00), and [15:00-17:00].

[0106] S63, classify the product objects according to the first identification code and the second identification code to obtain a plurality of product packages, and assign a product package category code to each product package. The first identification code is a structure category code, and the second identification code is a production rhythm class code. According to the combination of the first identification code and the second identification code, the object products are classified and divided into a plurality of product packages, and a product package category code is assigned to each product package. Each product package is associated with the category information and the production rhythm information of the sub-assembly product, so that the processing process of the product package in the sub-assembly stage is or tends to be rhythmic production.

[0107] S64, calculate the expected value of the theoretical construction time consumption of the object products in each product package. The method for calculating the expected value of the theoretical construction time consumption of the object products can refer to the calculation method of the mathematical expectation in the prior art.

[0108] S65, according to the progress inspection period, the process operation number and the expected value of the theoretical construction time of the object product in the product package, the target number of each object product in the product package is calculated. The target number can be understood as the optimal number of object products in each product package. When the product package has the optimal number of object products, the construction of one product package can be completed within one progress inspection period, so as to ensure the beatification production of the ship block erection stage.

[0109] Further, the target number is denoted as H, the expected value of the theoretical construction time of the object product in the product package is denoted as μ1, the progress inspection period is denoted as D1, and the process operation number is denoted as m1. Then the target number H = m1* D1 / μ1.

[0110] S66, according to the target number, a plurality of parts packages are obtained by packing each product package, and each part package is assigned a part tray code.

[0111] Each product package has a plurality of parts packages, and the number of object products in the parts package is less than or equal to the target number. Specifically, according to the calculated target number, each product package is packed into a plurality of parts packages, and the number of object products in each parts package is the target number or less than the target number.

[0112] Further, the step of packing each product package into a plurality of parts packages further comprises marking the packaging detail information of the parts package; wherein the packaging detail information comprises product quantity information, occupancy rate or other suitable related information of the parts package.

[0113] Further, a product package includes 7 object products, and the calculated target number H is 4. Then the product package is divided into two parts packages, the first parts package includes 4 object products, and the second parts package includes 3 object products. The first parts package can be marked with the packaging detail information "4 / 4 sets (100%)". The second parts package can be marked with the packaging detail information "3 / 4 sets (75%)". The "4 / 4 sets" and "3 / 4 sets" are the product quantity information of the corresponding parts package, and the "100%" and "75%" are the occupancy rate of the corresponding parts package. It should be noted that the packaging detail information can also take other suitable forms, and the embodiment is not limited thereto.

[0114] In an optional embodiment, after performing the step of packing each product package into a plurality of parts packages, the following step is further included: calculating the planned production cycle of the product package Wherein, μ1 is the expected value of the theoretical construction time of the object product in each product package, c is the occupancy rate of the part package, m2 is the actual operation number, m1 is the operation number of the process, and H is the target piece number.

[0115] In step S7, production scheduling is performed on the part packages according to the divided part packages, and the object products are subjected to the sub-assembly process according to the production scheduling to process the sub-assembly products. Optionally, referring to Figure 5 The production scheduling of the part packages includes steps S71 to S72, which are described as follows.

[0116] S71, the part packages are sent to the corresponding production sites according to the part tray codes. Specifically, in the sub-assembly process, the received part tray codes are updated in real time, and the part packages are sent to the corresponding production sites according to the product types of the part packages.

[0117] S72, the object products in the part packages located in the production sites are arranged in the production sites to perform the sub-assembly process. Specifically, for the sub-assembly parts of the object products in the same part package, the sub-assembly parts are arranged in the production sites according to the combination relationship of the sub-assembly products, and the placement sites of different part packages are visually divided, thereby forming the operation sequence of the product packages in the production sites.

[0118] In an optional embodiment, the production scheduling of the part packages further includes steps S73 to S75, which are described as follows.

[0119] S73, the start processing time of the product package is obtained. The start processing time means the time when the sub-assembly process of the corresponding product package is planned to start.

[0120] S74, the planned completion time of the product package is calculated according to the planned production cycle and the start processing time of the product package. Specifically, the planned completion time of the product package is the start processing time plus the planned production cycle.

[0121] S75, the point inspection interval of the product package is determined according to the planned completion time of the product package. Specifically, according to the start processing time and the planned completion time of the product package, the operation time sub-interval corresponding to the product package can be determined, the point inspection interval of the product package is located in the operation time sub-interval corresponding to the product package, the operation time sub-interval corresponding to the product package is determined according to the specific time range of the point inspection interval of the product package, and the point inspection interval is bound to the operation time sub-interval of the corresponding product package.

[0122] In an optional embodiment, referring to Figure 6 , after the production scheduling of the part packages in step S7 is performed, step S8 of inspecting the actual completion state of the product package is further included. Further referring to Figure 7, the actual completion state of the product is inspected, including steps S81 to S83, as described below.

[0123] S81, the actual start time and the actual completion time of each product package are obtained. The actual start time means the actual start time of the sub-assembly process for the corresponding product package, and the actual completion time means the actual end time of the sub-assembly process for the corresponding product package.

[0124] S82, when the current time is in the inspection interval, the actual completion state of the product package in the inspection interval is inspected. Specifically, when the time reaches the inspection interval, all product packages bound to the inspection interval can be queried, and the actual completion state of the product package is determined by on-site inspection at the production site.

[0125] S83, after the inspection of the product package is completed, for the product package that is not completed on time, it is judged whether the processing time abnormality is located in the time range between the start processing time and the planned completion time, to determine whether the abnormality is located in the product package or outside the product package, to facilitate the management, adjustment and improvement of the sub-assembly process.

[0126] In the embodiment, the object product is classified again by the first identification code and the second identification code, a plurality of product packages are obtained, the type information and the production rhythm information of the sub-assembly product are associated with each product package, and a similar structure product combination capable of rhythm production is constructed, the purpose of the same personnel or similar personnel producing the same or similar products in the same place is achieved, the ship sub-assembly link approaches to the standardized work flow, and the ship building efficiency is effectively improved; and when the actual number of workers is the same as the process operation number of workers, the standard production rhythm of a product package can be completed in one inspection period, the product scheduling and dispatching are performed, the ship sub-assembly link can be produced in rhythm, the parts package is arranged in the production site, which helps to reduce the equipment idle rate, reduce material waste and transportation cost, facilitate the plan management, adjustment and improvement of the ship sub-assembly production link, and thus the ship building efficiency is improved, the production cost is reduced, and the rapid ship building is realized.

[0127] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify, change or combine the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed in the present application should be covered by the claims of the present application.

Claims

1. A method for scheduling and planning ship operations, characterized in that, Includes the following steps: Based on the structural characteristics of the individual assembled products, the individual assembled products are classified to obtain several individual assembled groups, and each individual assembled group is assigned a first identification code. Obtain the structural type information of the group stand-up product and bind it to the corresponding group stand-up product; Based on the segmented objects that require production scheduling, obtain the corresponding object products; Based on the structural type information of the object product, calculate the theoretical construction time of the object product; Based on the preset fluctuation range of working hours and the theoretical construction time, the production cycle of the target product is classified to obtain several production cycle groups, and a second identification code is assigned to each production cycle group. Based on the preset progress inspection cycle and the number of workers in each process, the object product is divided into several product packages using the first identification code and the second identification code, and each product package is further divided into several parts packages. Production scheduling is performed on the parts package to perform a small assembly process on the target product to obtain the corresponding small assembled products.

2. The method for scheduling and planning ship crews according to claim 1, characterized in that, Calculating the theoretical construction time for the object product includes the following steps: Obtain the structural type information of the object product; Based on the structural type information of the target product, the standard operating model of the target product is obtained from the process database; Based on the standard operating model, obtain the corresponding process parameters; Based on the process parameters, the theoretical construction time for the object product is calculated.

3. The method for scheduling and planning ship crews according to claim 1, characterized in that, The production cycle time classification of the object products includes the following steps: Obtain the preset working hour fluctuation range; Based on the fluctuation range of the working hours and the theoretical construction time of the object product, the maximum construction time and minimum construction time of each object product are calculated. The construction time interval for the target product is determined based on the maximum construction time and the minimum construction time. A histogram of time consumption distribution is established with the construction time interval as the horizontal axis and the number of object products within the construction time interval as the vertical axis. The construction time interval is divided into several sub-intervals. Based on the construction time sub-intervals, the target product is divided into several production cycle groupings.

4. The ship group planning and scheduling method according to claim 3, characterized in that, In the step of dividing the construction time interval, the i-th construction time sub-interval C Ti Expected value μ Ti Satisfying |x-μ Ti | / μ Ti ≤P; Where i is a positive integer, and x is the value in the i-th construction time sub-interval C. Ti The theoretical construction time for any object product within the range, where P is the fluctuation range of the construction time.

5. The method for scheduling and planning ship crews according to claim 1, characterized in that, The process involves dividing the target product into product packages to obtain several product packages, and then further dividing each product package into parts packages to obtain several parts packages. This includes the following steps: Obtain the progress inspection cycle, the number of workers in the process, and the daily working time; Divide the daily homework time into n homework time sub-intervals; Based on the first identification code and the second identification code, the product objects are classified to obtain several product packages, and each product package is assigned a product package category code; Calculate the expected theoretical construction time for each object product in each product package; Based on the progress inspection cycle, the number of workers in the process, and the expected value of the theoretical construction time of the object products in the product package, the target number of object products in each product package is calculated. Based on the target number of items, each product package is divided into several parts packages, and each parts package is assigned a parts pallet code. Where n is a positive integer, each product package has several parts packages, and the number of object products in each parts package is less than or equal to the target number of pieces.

6. The method for scheduling and planning ship crews according to claim 5, characterized in that, The step of repackaging each product package into several parts packages further includes: The packaging details of the parts package are labeled, including the product quantity and occupancy rate of the parts package.

7. The ship group planning and scheduling method according to claim 5, characterized in that, The production scheduling of the parts package includes the following steps: According to the part pallet code, the part package is delivered to the corresponding production site; The parts packaged products located in the production site are centrally arranged in the production site for small-group assembly.

8. The method for scheduling and planning ship crews according to claim 5, characterized in that, After performing the component packaging process on each product package to obtain several component packages, the following steps are also included: The planned production cycle of the product package was calculated. Where μ1 is the expected theoretical construction time of the object product in each product package, c is the occupancy rate of the parts package, m2 is the actual number of workers, m1 is the number of workers in the process, and H is the number of target parts.

9. The method for scheduling and planning a ship crew according to claim 8, characterized in that, Performing production scheduling for the parts package also includes the following steps: Obtain the start processing time of the product package; Calculate the planned completion time of the product package based on the planned production cycle and the start processing time. The inspection interval for the product package is determined based on the planned completion time of the product package.

10. The method for scheduling and planning a ship crew according to claim 9, characterized in that, After scheduling the production of the parts package, the following steps are also included: Obtain the actual start time and actual completion time for each of the product packages; When the current time is within the inspection interval, the actual completion status of the product package within the inspection interval is inspected. After completing the inspection of the product packages, for product packages that are not completed on time, determine whether the abnormal processing time is within the time range between the start processing time and the planned completion time.

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