JP5686072B2 - Warehouse work plan creation device - Google Patents

Description

  The present invention relates to a warehouse work plan creation device for creating a work plan for shipping work for loading products stored in a warehouse onto a ship.

  In shipping operations where products stored in a warehouse composed of multiple buildings are loaded onto a ship, as the product comes closer to the shipping time, the products are transferred from each building to the quay where the ship is anchored for shipping. It is transported to the provided product storage area. And the product conveyed to the product storage place is loaded in the hatch of a ship by the loading crane provided in the quay. Note that the method of transporting the product to the product storage area differs depending on the position of the building where the product is stored and the position of the product storage area. That is, when the product storage is within the movable range of the warehouse crane provided in the building where the product is stored, the product is directly transferred to the product storage using the warehouse crane. On the other hand, when there is a product storage area outside the range of motion of the warehouse crane, the product is delivered to the vehicle loading / unloading entrance of each building using the warehouse crane and then used for transportation equipment such as forklifts and transportation vehicles. Transported to product storage.

  In such shipping work, when the work of transporting products to the product storage area is concentrated in a specific time zone, the workload of warehouse cranes and transport equipment increases, so the arrival time of products at the product storage area is delayed, so-called out-of-load Will occur. In the event that the product is out of stock at the product yard, the product loading operation will be interrupted, resulting in an increase in logistics lead time and vessel berthing time, resulting in lower logistics efficiency and logistics costs. Will increase. For this reason, various methods have been proposed as methods for creating a work plan for shipping work so as not to run out of cargo.

  However, the time it takes to create a work plan for the shipping work depends on the size of the shipping equipment used for the shipping work (for example, the number of products, the number of warehouse buildings, the number of loading cranes, the number of berths where the ship can be anchored, and the Increases as the size increases). In addition, since shipping operations are easily affected by factors such as fluctuations in factory operations, weather, and ship operating conditions, the created work plans cannot be used, and work plans must be recreated. There is.

  Against this background, Patent Document 1 discloses a product distribution control device for reducing the frequency of recreating a work plan for shipping work. This product distribution control device monitors the deviation between the created work plan and the actual shipping work, and predicts that the product will be out of stock at the product yard when the deviation exceeds the reference value. In such a case, an interruption process is performed so that the out-of-loading operation is preferentially executed.

JP-A-11-236105

  However, according to the device described in Patent Document 1, when the shipping facility is large-scale, the interruption processing performed for the occurrence of the out-of-loading affects other operations, and the loading is continued due to a long-time out-of-load. It may be interrupted. In addition, when outages are predicted to occur simultaneously in a plurality of loading cranes due to disturbance, it is difficult to appropriately determine the priority order of interrupt processing. Therefore, according to the apparatus described in Patent Document 1, it is difficult to suppress the occurrence of out-of-load when the shipping facility is large-scale. In order to solve such a problem, it is conceivable to reduce out-of-load and improve work efficiency in the entire shipping facility by performing a plan correction or re-planning over the entire shipping facility. However, since it takes a lot of planning time to create a work plan, it is difficult to execute plan correction or replanning many times in actual operation. Therefore, it is expected to provide a warehouse work plan creation device that can create a work plan for shipping work in a short time.

  The present invention has been made in view of the above problems, and its purpose is a warehouse work plan creation device capable of creating a work plan for shipping work for loading products stored in a warehouse onto a ship in a short time. Is to provide.

  In order to solve the above-described problems and achieve the object, the warehouse work plan creation apparatus of the present invention transports products stored in the warehouse to a product yard provided on the quay, and a loading crane provided on the quay. This is a warehouse work plan creation device that creates a work plan for shipping work to load products transported to the product yard into the hatch of a ship anchored on the quay, where the product yard for transporting the product, the location of the product A leading relationship generating unit that generates leading relationship data indicating a leading and trailing relationship of the loading operation of each product in accordance with a loading crane used for loading, a hatch position of a ship to which products are loaded, and a loading order of products in each hatch; A target shipping time calculating unit for calculating a target shipping operation time of each product using the preceding relationship data generated by the relationship generating unit; A work plan in the warehouse is created so that the product is transported to the product storage area by the target shipping operation time calculated for each product, and the product is transported to the product storage area by the target shipping operation time. A warehouse operation time determination unit that corrects a target loading operation time of a loading operation of the product and a loading operation subsequent to the loading operation using the preceding relation data when there is a product that cannot be used.

  According to the warehouse work plan creation device according to the present invention, the target shipping time of the product is provisionally determined, and the work plan of the work in the warehouse is created based on the temporarily determined target shipping time of the product. It is possible to create a work plan for shipping work for loading stored products on a ship in a short time.

FIG. 1 is a schematic diagram showing a configuration example of a shipping facility that is a target for creating a work plan by the warehouse work plan creation system according to the first and second embodiments of the present invention. FIG. 2 is a block diagram showing the configuration of the warehouse work plan creation system according to the first and second embodiments of the present invention. FIG. 3 is a diagram illustrating an example of a specification information table, a management information table, and an inventory information table. FIG. 4 is a diagram illustrating an example of a warehouse crane work result table, a shipping crane work result table, and a transport work result table. FIG. 5 is a diagram illustrating an example of a vehicle transportation plan table. FIG. 6 is a diagram illustrating an example of a shipping work plan table and a shipping group breakdown table. FIG. 7 is a flowchart showing the flow of the warehouse work plan creation process according to the first embodiment of the present invention. FIG. 8 is a diagram showing an example of shipped product information. FIG. 9 is a diagram illustrating an example of inventory information. FIG. 10 is a diagram illustrating an example of warehousing work information. FIG. 11 is a diagram illustrating an example of emergency shipping plan information. FIG. 12 is a diagram illustrating an example of the shipping plan information. FIG. 13 is a conceptual diagram schematically showing an example of the preceding relationship data. FIG. 14 is a flowchart showing the flow of a warehouse work plan creation process according to the second embodiment of the present invention. FIG. 15 is a diagram illustrating an example of operator allocation plan information. FIG. 16 is a diagram illustrating an example of a building-going product delivery work list. FIG. 17 is a diagram for explaining a method of calculating the start time of the recommended allocation time zone in consideration of the product capacity of the quay. FIG. 18 is a diagram for explaining a method of calculating the end time of the recommended allocation time zone. FIG. 19 is a diagram illustrating an example of load information of a warehouse crane. FIG. 20 is a diagram in which the load information of the warehousing operation is added to the load information of the warehouse crane shown in FIG. FIG. 21 is a diagram for explaining a method for calculating information on the number of surplus operators. FIG. 22 is a diagram for explaining a method for assigning a vehicle shipment work plan.

  The configuration and operation of the warehouse work plan creation system according to the first and second embodiments of the present invention will be described below with reference to the drawings.

[Structure of warehouse]
First, with reference to FIG. 1, the configuration of a shipping facility that is a target for creating a work plan by the warehouse work plan creation system according to the first and second embodiments of the present invention will be described.

  FIG. 1 is a schematic diagram showing a configuration example of a shipping facility that is a target for creating a work plan by the warehouse work plan creation system according to the first and second embodiments of the present invention. The shipping facility shown in FIG. 1 includes a plurality of product warehouses 1a, 1b, and 1c that store products shipped by ships that are anchored in a plurality of berths A, B, and C. Each product warehouse is composed of a plurality of buildings 1a1 to 1a3, 1b1 to 1b3, 1c1 to 1c3. The products manufactured in the factory are packed and then transported to each building by a transport vehicle or a conveyor. Warehouses 2a1 to 2a3, 2b1 to 2b3, and 2c1 to 2c3 are provided in each building for loading and unloading products carried into and out of each building.

  The product can be transported between the ridges and to the berths A to C by the transport vehicle 4 and the forklift 5 in which the cart 4a on which the product 3 is handled and the pulling portion 4b that pulls the cart 4a are separable. When products are transported using the transport vehicle 4, the products 3 stored in the building are placed on the loading / unloading entrances 6 a, 6 b, 6 c that pass through the buildings of the product warehouses 1 a to 1 c, and each building After the product 3 is loaded onto the cart 4a by the warehouse crane, the cart 4a is carried out by the towing unit 4b, so that it is transported to other buildings or berths A to C. The carry-in / out entrances 6 a to 6 c are also used as a passage of the transport vehicle 4.

  The products 3 carried out from the respective buildings by the transport vehicle 4 are the product yards A-1, A-2, B-1, B-2, C- of the berths A to C to which the ships 7a, 7b, 7c are attached. 1 and C-2. Each ship is provided with a plurality of hatches 7a1, 7a2, 7b1, 7b2, 7c1, 7c2 into which the product 3 is loaded. Each berth is provided with a loading crane 8a, 8b, 8c for loading the product 3 placed in the product place into the hatch of the vessel 7a, 7b, 7c. Each loading crane is configured to be movable between a plurality of hatches of the ship.

[Configuration of warehouse work plan creation system]
Next, with reference to FIG. 2, the structure of the warehouse work plan creation system which is the 1st and 2nd embodiment of this invention is demonstrated.

  FIG. 2 is a block diagram showing the configuration of the warehouse work plan creation system according to the first and second embodiments of the present invention. As shown in FIG. 2, the warehouse work plan creation system 10 according to the first and second embodiments of the present invention is configured by an information processing device such as a workstation or a personal computer, and includes a plan target information storage device 11, a shipment. A condition input device 12, an equipment information database (DB) 13, a plan condition input device 14, a plan creation device 15, and a plan output device 16 are provided. The plan target information storage device 11 is configured by a non-volatile storage device such as a hard disk, and stores various types of information necessary for creating a work plan in the shipping facility.

  The plan target information storage device 11 includes a product information database (DB) 11a, a progress situation database (DB) 11b, a vehicle transportation plan information database (DB) 11c, and a shipment plan database (DB) 11d. The product information DB 11a includes a specification information table that indicates specification information for each of a plurality of products, a management information table that indicates information about the packing date / time and the shipping date / time for each of a plurality of products, and information about a storage location in a warehouse for each of the plurality of products. The stock information table shown is stored.

  3A to 3C are diagrams showing examples of the specification information table, the management information table, and the inventory information table, respectively. As shown in FIG. 3A, the specification information table includes unique identification information (product ID) assigned to each product, and the width, outer diameter, weight, type, and delivery destination of the product corresponding to the product ID. It is stored in association with the data related to.

  As shown in FIG. 3B, the management information table has a product ID and a product packaging flag corresponding to the product ID (a value of 1 indicates that the product has been packed and a value of 0). In this case, a flag indicating that the product is not packaged), the packaging date and time (plan / actual result) of the product corresponding to the product ID, and the shipment flag of the product corresponding to the product ID (if the value is 1, the product has been shipped) If the value is 0, the flag indicates that the product has not been shipped), the shipping date and time (planned / actual) of the product corresponding to the product ID, and the shipping operation of the product corresponding to the product ID Data related to equipment used (crane, ship, truck, etc.) are stored in association with each other.

  As shown in FIG. 3C, the inventory information table includes a product ID, unique identification information (building ID) given to a ridge in which a product corresponding to the product ID is stored, and a product corresponding to the product ID. Data relating to the row number in the building that is stored and the column number in the building in which the product corresponding to the product ID is stored is stored in association with each other.

  The progress DB 11b includes a warehouse crane work result table showing work information of the warehouse cranes 2a1-2a3, 2b1-2b3, 2c1-2c3, a loading crane work result table showing work information of the loading cranes 8a, 8b, 8c, and a transport vehicle. 4 is stored.

  4A to 4C are diagrams showing examples of a warehouse crane work result table, a loading crane work result table, and a transport work result table, respectively. As shown to Fig.4 (a), the warehouse crane work performance table respond | corresponds to the specific identification information (warehouse crane ID) and warehouse crane ID which were given to the warehouse cranes 2a1-2a3, 2b1-2b3, 2c1-2c3. The building ID of the building where the warehouse crane is located, the product ID of the product carried by the warehouse crane corresponding to the warehouse crane ID, the date and time when the product carrying work was completed, the row number and column number of the product carrying source (CV is , Indicating that the product transport source is a conveyor, that is, a factory), the row number and column number of the product transport destination, and the type of work (IN for carry-in work, OUT for carry-out work) Is stored in association.

  As shown in FIG. 4 (b), the loading crane work result table includes the unique identification information (shipping crane ID) given to the loading cranes 8a, 8b, 8c, and the loading crane corresponding to the loading crane ID. Unique identification information (berth ID) given to the berth that is being delivered, product ID of the product carried by the loading crane corresponding to the loading crane ID, the date and time when the product carrying work was completed, and the shipping group to which the product to be loaded belongs Data relating to the unique identification information (shipping Gr. No.) is stored in association with each other.

  As shown in FIG. 4 (c), the carrying work result table includes unique identification information (vehicle No.), vehicle No. assigned to the carrying vehicle 4. Unique identification information (transport lot No.) assigned to the lot to which the product transported by the transport vehicle 4 corresponding to the vehicle No. Are stored in association with the product ID of the product transported by the transport vehicle 4, the time when the transport operation is completed, and the data related to the transport source and transport destination of the product transported by the transport vehicle 4.

  The vehicle transportation plan information DB 11c is a vehicle that shows information on product warehousing work to the product warehouses 1a, 1b, and 1c using the transportation vehicle 4 and product warehousing work (emergency shipping work) from the product warehouses 1a, 1b, and 1c. A transportation plan table is stored. FIG. 5 is a diagram illustrating an example of a vehicle transportation plan table. As shown in FIG. 5, the vehicle transport plan table is performed by the product ID of the product, the building ID of the building where the transport vehicle 4 arrives, the scheduled arrival time of the transport vehicle 4 (scheduled arrival time at the loading / unloading entrance), and the transport vehicle 4. Entry / exit type indicating whether the work is a warehousing work or a warehousing work; The data regarding is related and memorized.

  The shipping plan DB 11d stores a shipping work plan table indicating information related to product shipping work, and a shipping group breakdown table indicating the configuration of product groups loaded on the ships 7a, 7b, and 7c. FIGS. 6A and 6B are diagrams showing examples of the shipping work plan table and the shipping group breakdown table, respectively. As shown in FIG. 6 (a), the shipping work plan table includes a shipping Gr. No. , Shipping Gr. No. Unique identification information (carrier ID) given to the ship on which the product group included in the ship is loaded, the loading Gr. No. Specific identification information (hatch No.) given to the hatch where the product group corresponding to the product group is loaded, the loading Gr. No. The shipping start time of the product group corresponding to No. Of the product group corresponding to the berth, the berth ID of the berth where the ship corresponding to the carrier ID is anchored, and the loading Gr. No. Data relating to the loading crane ID of the loading crane used when loading the product group corresponding to is stored in association with each other. As shown in FIG. 6B, the shipping group breakdown table includes the shipping Gr. No. And shipping Gr. No. Is stored in association with data related to product IDs of products included in the shipping group corresponding to.

  The shipping condition input device 12 is configured by a graphical user interface, and is operated when an operator creates and corrects data stored in the planning target information storage device 11. The equipment information database (DB) 13 includes various parameters for creating a warehouse work plan (for example, standard handling time of crane equipment (warehouse cranes and loading cranes), standard transportation time of a transportation vehicle, conditions of preceding and following relationships between operations, etc. ) And facility stop information, information on the arrangement of operators operating the facility, and information on emergency designated materials that need to be prioritized are stored as plan condition data. The plan condition input device 14 is constituted by an information input device such as a keyboard, a numeric keypad, and a mouse pointer, and outputs the operation input information of the operator and the plan condition data stored in the facility information DB 13 to the plan creation device 15.

  The plan creation device 15 is configured such that an operation processing device such as a CPU executes a computer program stored in a storage device such as a ROM, whereby a work creation unit 15a, a preceding relationship generation unit 15b, a target shipping time calculation unit 15c, And warehouse work time determination unit 15d (emergency delivery work assignment unit 15d1, building-over product delivery work assignment unit 15d2, receipt work assignment unit 15d3, direct beaching work assignment unit 15d4). The functions of the work creation unit 15a, the preceding relationship generation unit 15b, the target shipping time calculation unit 15c, and the warehouse work time determination unit 15d will be described later. The plan output device 16 includes an output device such as a liquid crystal display or a printer, and is connected to the plan creation device 15. The plan output device 16 outputs the warehouse work plan created by the plan creation device 15.

[Warehouse work plan creation process]
The warehouse work plan creation system 10 having such a configuration creates a work plan for shipping work for loading products stored in the warehouse onto a ship by executing the following warehouse work plan creation processing. The operation of the warehouse work plan creation system 10 when executing the warehouse work plan creation processing according to the first and second embodiments of the present invention will be described below with reference to the flowcharts shown in FIGS.

[First Embodiment]
First, the warehouse work plan creation process according to the first embodiment of the present invention will be described with reference to the flowchart shown in FIG. FIG. 7 is a flowchart showing the flow of the warehouse work plan creation process according to the first embodiment of the present invention. The flowchart shown in FIG. 7 starts at the timing when the operator inputs a warehouse work plan creation instruction by operating the plan condition input device 14, and the warehouse work plan creation process proceeds to the process of step S1.

  In the process of step S1, the work creation unit 15a refers to the shipping work plan table shown in FIG. 6 (a) and the shipping group breakdown table shown in FIG. 6 (b), and information on products shipped within the planning target period. Is created as shipment product information. FIG. 8 is a diagram showing an example of shipped product information. As shown in FIG. 8, the shipment product information includes a product ID assigned to a product to be shipped, a product storage place on which the product to be shipped is placed, a carrier ID assigned to a carrier ship on which the product is loaded, and when the product is loaded. The loading crane ID assigned to the loading crane used for the inspection, and the hatch number assigned to the hatch of the transport ship for loading the product. , And information regarding the order of loading products onto the carrier (however, the loading order may be specified in units of products without determining the loading order for each product). Note that the order of loading products on the transport ship is determined in advance according to the shape and size of the hatch, the width, outer diameter, and weight of the loaded products. For example, the loading order is determined so that products having a greater weight are loaded first (downward). Moreover, since it is better that the products loaded in the same row have the same width as much as possible, the loading order is determined so as to achieve such a positional relationship. Thereby, the process of step S1 is completed and a warehouse work plan creation process progresses to the process of step S2.

  In the process of step S2, the work creation unit 15a refers to the inventory information table shown in FIG. 3C, and extracts information about products stored in the warehouse as inventory information. FIG. 9 is a diagram illustrating an example of inventory information. As shown in FIG. 9, the inventory information includes the product ID assigned to the product, the ridge ID of the ridge in which the product corresponding to the product ID is stored, and the row in the ridge in which the product corresponding to the product ID is stored. The information regarding the number and the column number in the ridge in which the product corresponding to the product ID is stored is included. Thereby, the process of step S2 is completed and the warehouse work plan creation process proceeds to the process of step S3.

  In the process of step S3, the work creation unit 15a refers to the warehouse crane work performance table shown in FIG. 4 (a) and the vehicle transportation plan table shown in FIG. 5, and is transported from the factory to the product warehouse by the warehouse crane and the transportation vehicle. Information about incoming products is extracted as warehousing work information. FIG. 10 is a diagram illustrating an example of warehousing work information. As shown in FIG. 10, the warehousing work information corresponds to the product ID assigned to the product, the unique identification information (transport lot ID) assigned to the transport lot including the product corresponding to the product ID, and the product ID. The information includes the building ID of the building to which the product is transported and the estimated arrival time (warehouse arrival scheduled date and time) of the product corresponding to the product ID. Thereby, the process of step S3 is completed and a warehouse work plan creation process progresses to the process of step S4.

  In the process of step S4, the work creation unit 15a refers to the vehicle transportation plan table shown in FIG. 5 and urgently sends information related to a delivery plan for products that need to be delivered urgently, such as products that are about to be delivered. Create as shipping plan information. Specifically, the work creation unit 15a creates, as emergency delivery plan information, information related to a work for which the entry / exit type is set to “exit” in the vehicle transportation plan table shown in FIG. FIG. 11 is a diagram illustrating an example of emergency shipping plan information. As shown in FIG. 11, the emergency shipping plan information includes the product ID assigned to the product, the transport lot ID of the transport lot including the product corresponding to the product ID, and the ridge of the ridge in which the product corresponding to the product ID is transported. Information on the ID and the estimated arrival time (warehouse arrival date and time) at the product ridge corresponding to the product ID is included. Thereby, the process of step S4 is completed and the warehouse work plan creation process proceeds to the process of step S5.

  In the process of step S5, the work creation unit 15a refers to the shipping work plan table shown in FIG. 6A and the shipping group breakdown table shown in FIG. Information about the facility to be used and the date and time of loading work is created as loading plan information. FIG. 12 is a diagram illustrating an example of the shipping plan information. As shown in FIG. 12, the shipping plan information includes the carrier ID of the carrier on which the product is loaded, the hatch number of the hatch on which the product is loaded. , Including information on the loading crane ID of the loading crane used to load the product, the product location where the product is placed, the scheduled start time for loading and unloading the product, the scheduled end time for loading and unloading the product, and the earliest possible time for starting loading the product . Thereby, the process of step S5 is completed, and the warehouse work plan creation process proceeds to the process of step S6.

  In the process of step S6, the work creation unit 15a creates, as warehouse work data, information related to the work of collectively transporting the shipped products for one transport vehicle. Specifically, for each product included in the shipped product information created by the process of step S1, the work creation unit 15a plans to store the product storage area where the product is transported and the building or product where the product is stored. Compare the location with the building. Then, if the product storage site where the product is transported is located immediately in front of the building where the product is stored or the building where the product is scheduled to be stored, the work creating unit 15a performs the shipping operation using the warehouse crane (directly on the beach). If it is not, the product is classified as a product to be shipped using the transport vehicle 4 or the forklift 5 (a product delivery work over the building).

  In addition, the work creation unit 15a collects products that satisfy the following cart lot grouping conditions as a lot to be transported by the same cart 4a for the products that are to be delivered from the building. There is an upper limit to the number of products that can be loaded on one carriage 4a. For this reason, the work creation unit 15a collects bogie lots within a range that does not exceed the upper limit. Then, the work creation unit 15a performs a product delivery operation for the product over the building using the transport vehicle 4 for the products collected in the same cart 4a, and performs a product delivery operation for the product over the forklift 5 for products not collected in the same cart 4a. Classify as product. The work creation unit 15a refers to the plan condition data stored in the equipment information DB 13, and creates work information such as cargo handling work of the warehouse crane and the shipping crane and preparation work before cargo handling as warehouse work data. . Thereby, the process of step S6 is completed and the warehouse work plan creation process proceeds to the process of step S7.

[Cargo lot summary conditions]
(1) Carrier ID and hatch No. (2) Same building ID (3) Same product place (4) Difference in loading order below standard value

  In the process of step S7, the preceding relation generation unit 15b indicates a preceding relation indicating the preceding and succeeding relation of each loading operation defined in the shipping plan information created by the process of step S5 according to the following preceding relation generating condition. Generate data. Thereby, the process of step S7 is completed, and the warehouse work plan creation process proceeds to the process of step S8.

[Precedence generation condition]
(1) Two loading operations use the same loading crane (2) Two loading operations use the same ship and the same hatch (3) Two loading operations use the same product yard (4 ) Two loading operations use the same berth and different ships

  Here, an example of the preceding relationship data generated by the process of step S7 will be described. FIG. 13 is a conceptual diagram schematically showing an example of the preceding relationship data. The preceding relationship data shown in FIG. 13 indicates the preceding / following relationship of the shipping operation shown below.

(1-1) Hatch No. of a ship whose carrier ID is “F425”. The carrier ID is “F425” after the loading operation W1 for loading the product placed in the product storage area “A-2” using the “No. 1” loading crane in the hatch with “# 1”. Ship hatch No. A loading operation W4 for loading the product placed in the product storage area “A-1” using the “No. 1” loading crane to the hatch with “# 2”. The preceding relationship data is generated according to the preceding relationship generation condition (1).

(1-2) The hatch No. of the ship whose carrier ID is “F518”. The carrier ID is “F425” after the loading operation W2 in which the product placed in the product storage “B-1” is loaded into the hatch with “# 2” using the “No. 2” loading crane. Ship hatch No. A loading operation W5 is performed in which the product placed in the product storage area “A-2” is loaded into the hatch with “# 1” using the “No. 2” loading crane. The preceding relationship data is generated according to the preceding relationship generation condition (1).

(1-3) Hatch No. of a ship whose carrier ID is “QL35”. The carrier ID is “J321” after the loading work W3 in which the product placed in the product storage location “C-2” is loaded into the hatch with “# 1” using the “No. 3” loading crane. Ship hatch No. A loading operation W6 is performed in which the product placed in the product storage place “B-2” is loaded into the hatch with “# 1” using the “No. 3” loading crane. The preceding relationship data is generated according to the preceding relationship generation condition (1).

(2) Hatch No. of the ship having the carrier ID “F425”. The carrier ID is “F425” after the loading operation W1 for loading the product placed in the product storage area “A-2” using the “No. 1” loading crane in the hatch with “# 1”. Ship hatch No. A loading operation W5 is performed in which the product placed in the product storage area “A-2” is loaded into the hatch with “# 1” using the “No. 2” loading crane. The preceding relationship data is generated according to the preceding relationship generation condition (2).

(3) Hatch No. of the ship whose carrier ID is “F425”. The carrier ID is “F425” after the loading operation W1 for loading the product placed in the product storage area “A-2” using the “No. 1” loading crane in the hatch with “# 1”. Ship hatch No. A loading operation W5 is performed in which the product placed in the product storage area “A-2” is loaded into the hatch with “# 1” using the “No. 2” loading crane. The preceding relationship data is generated according to the preceding relationship generation condition (3).

(4) Hatch No. of the ship whose carrier ID is “F518”. The carrier ID is “J321” after the loading operation W2 for loading the product placed in the product storage site “B-1” using the “No. 2” loading crane in the hatch with “# 2”. Ship hatch No. A loading operation W6 is performed in which the product placed in the product storage place “B-2” is loaded into the hatch with “# 1” using the “No. 3” loading crane. The preceding relationship data is generated according to the preceding relationship generation condition (4).

  In the process of step S8, the target shipping time calculation unit 15c allocates a work plan for each shipping work to the planning target period according to the preceding relation data generated by the process of step S7. Specifically, the target shipping time calculation unit 15c refers to the shipping product information created by the process of step S1, specifies the products included in each shipping operation in order of precedence, and sets the target shipping operation time of the specified products. Will be assigned to the target period. When assigning a work plan for the loading work, the target loading time calculation unit 15c waits for the transporting vehicle 4 in consideration of the capacity limit of the product place (the maximum number of carts 4a that can be placed in the product place). Allocate a work plan for shipping work so that the time will be shortened. In addition, for a time zone in which the work load of the unloading work performed prior to the loading work is high, an idle time may be set between the preceding and following loading work. Thereby, the process of step S8 is completed, and the warehouse work plan creation process proceeds to the process of step S9.

  In the process of step S9, the emergency outgoing work assignment unit 15d1 refers to the emergency outgoing plan information created by the process of step S4, and assigns the work plan of the emergency outgoing work to the planning target period. When assigning an emergency dispatch work plan, the emergency delivery work assignment unit 15d1 restricts the capacity restriction of the loading / unloading entrance (the maximum number of carts 4a that can be arranged) and the number of operators operating the warehouse crane. Assign the work plan for emergency dispatch work as Thereby, the process of step S9 is completed and the warehouse work plan creation process proceeds to the process of step S10.

  In the process of step S10, the building-going product delivery work allocating unit 15d2 assigns the work plan for the delivery work of products classified as products to be delivered by the process of step S6 to the planning target period. Specifically, the building-going product delivery work assignment unit 15d2 performs the work of transporting the empty cart to the loading / unloading entrance (work of the transport vehicle), the work of loading the outgoing product into the empty cart at the warehouse (work of the warehouse crane), the product The work plan for transporting the cart loaded with the cargo to the product site (work of the transport vehicle) and the work of loading the product into the ship at the product site (work of the loading crane) is assigned to the target period. At this time, if the product delivery work assignment unit 15d2 cannot perform the product delivery work prior to the corresponding product shipping work, the target shipping work time of the product and the product loading work The target loading operation time of the subsequent loading operation is shifted backward (to delay the time).

  The building supervision product delivery work assignment unit 15d2 uses the waiting time for the loading work and the minimization (leveling) of the time when the load of each facility exceeds the upper limit value as an evaluation value, and the load of the vehicle shipping work becomes less than the upper limit value. And other equipment and product restrictions (for example, the number of equipment that can be used, etc.) Allocate within the period. Note that the planning problem solved here is a problem of planning under the constraint that there is an upper limit on the equipment that can be used, and can therefore be handled as a project scheduling problem with resource constraints. This kind of problem can be solved in practical time using a solution using metaheuristics such as tabu search. Here, since the solution of the planning problem is known at the time of filing of the present invention, a detailed description is omitted. For more information on solving planning problems, see references (Koji Nonobe and Toshihide Ibaraki, Formulation and tabu search algorithm for the resource constrained project scheduling problem, in Essays and Surveys in Metaheuristics, edited by CelsoC. Rebeiro and Pierre Hansen, KluwerAcademic Publishers, Boston, pp.557-588, 2002). The planning problem solved here can be solved by reducing it to a mixed integer problem. Thereby, the process of step S10 is completed and a warehouse work plan creation process progresses to the process of step S11.

  In the process of step S11, the warehousing work assigning unit 15d3 refers to the warehousing work information created by the process of step S3, and assigns the work plan for the warehousing work to the planning target period. When assigning a work plan, the warehousing work assigning unit 15d3 assigns the work plan with restrictions on the capacity restriction of the loading / unloading entrance (the maximum number of carts 4a that can be arranged) and the number of operators operating the warehouse crane. . At this time, if the warehousing work cannot be started at the desired warehouse arrival date and time defined in the warehousing work information, the warehousing work assignment unit 15d3 shifts the work plan for the warehousing work backward. Thereby, the process of step S11 is completed and a warehouse work plan creation process progresses to the process of step S12.

  In the process of step S12, the direct beach assignment work allocating unit 15d4 assigns the work plan of the product delivery work classified as the product that directly performs the beach removal work in the process of step S6 to the planning target period. Specifically, the direct beach assignment work allocation unit 15d4 (1) assigns work to the free time of the warehouse crane in consideration of the number of products that can be placed in the product storage area, and (2) If the completion time is later than the predetermined time before the product loading start time, the work plan for direct beaching is shifted forward (so that the time is earlier) and the work plan for warehousing work is moved backward as much as necessary. (3) If the completion time of the direct beaching operation is earlier than the time before the predetermined time from the product loading start time, it follows the target loading operation time of the product loading operation and the product loading operation. Shift the target loading operation time of the shipping operation backward. Thereby, the process of step S12 is completed and a warehouse work plan creation process progresses to the process of step S13.

  In the process of step S13, the plan output device 16 outputs information relating to the work plan assigned to the plan target period as warehouse work plan information. Warehouse work plan information includes Gantt chart of plan results, Gantt chart of work results, work precedence relation information (for investigation of cause of work delay), waiting place occurrence information, entry delay occurrence place information, vehicle outing Work occurrence information (the necessary vehicle removal work varies depending on the berth plan, hatch plan, etc.) can be exemplified. By outputting the warehouse work plan information, the operator can predict the work situation in advance and prepare for the response. Thereby, the process of step S13 is completed and a series of warehouse work plan creation processes are completed.

  As is clear from the above description, in the warehouse work plan creation process according to the first embodiment of the present invention, the preceding relationship generation unit 15b uses the product storage location for transporting the product and the loading crane used for product loading. In accordance with the hatch position of the ship to which the product is loaded and the product loading order in each hatch, the preceding relationship data indicating the preceding / following relationship of the loading operation of each product is generated, and the target loading time calculation unit 15c is the preceding relationship generation unit 15b. Is used to calculate the target shipping operation time for each product, and the warehouse operation time determination unit 15d calculates the product by the target shipping operation time for each product calculated by the target shipping time calculation unit 15c. In addition to creating a work plan in the warehouse so that the product can be transported to the product yard, it can be transported to the product yard by the target loading time. If there is no product, it corrects the target shipping work time of shipping operations following the shipping work and shipping operations of the product using the prior relationship data. As described above, in the warehouse work plan creation process according to the first embodiment of the present invention, the target shipping operation time of the product is provisionally determined, and the work plan in the warehouse is determined based on the temporarily determined target loading operation time of the product. Since it is created, it is possible to create a work plan for shipping work for loading products stored in the warehouse onto a ship in a short time.

[Second Embodiment]
The warehouse crane is operated by the operator. At this time, when the number of operators is smaller than the number of warehouse cranes, one operator operates a plurality of warehouse cranes, and the warehouse cranes on which no operators are on cannot handle products. For this reason, the operator's allocation plan for the warehouse crane in each time zone within the planning target period becomes a constraint condition when creating the warehouse work plan. Note that an operator's allocation plan for a cargo handling facility other than a warehouse crane such as a loading crane or a transport facility such as a transport vehicle is also a constraint condition when creating a warehouse work plan. Therefore, the warehouse work plan creation process according to the second embodiment of the present invention creates a warehouse work plan in consideration of the operator's assignment plan for the warehouse crane in each time zone within the planning target period. Hereinafter, with reference to the flowchart shown in FIG. 14, the flow of the warehouse work plan creation process which is the 2nd Embodiment of this invention is demonstrated.

  FIG. 14 is a flowchart showing the flow of a warehouse work plan creation process according to the second embodiment of the present invention. The flowchart shown in FIG. 14 starts when the operator inputs the operator assignment plan information and the warehouse work plan creation instruction by operating the plan condition input device 14, and the warehouse work plan creation process proceeds to the process of step S21. . The processing contents of steps S21 to S29 shown in FIG. 14 are the same as the processing contents of steps S1 to S9 shown in FIG. 7, so that the description thereof is omitted below and the description starts from the processing of step S30. The above-mentioned operator assignment plan information means information indicating the number of operators assigned to each warehouse crane for each time zone.

  FIG. 15 is a diagram illustrating an example of operator allocation plan information. In the operator assignment plan information shown in FIG. 15, the buildings into which products are carried in and out are classified into three groups, and the number of operators assigned to the warehouse cranes provided in each group's building is set for each time period of the planning period. ing. In the present embodiment, as shown in FIG. 1, since each warehouse has one warehouse crane, the maximum number of operators assigned is equal to the number of buildings constituting the group. That is, the operator who can be assigned to each group of group 1 (building 1a1, building 1a2, building 1a3), group 2 (building 1b1, building 1b2, building 1b3), and group 3 (building 1c1, building 1c2, building 1c3) The number of people is 0-3. However, the range of the number of groups and the number of operators assigned varies depending on the equipment and operation method. Moreover, the time zone (for example, 5/7 16: 00-17: 00) when the number of operators is not specified is a break time, and no operator is arranged.

  In the process of step S30, the over-building product delivery work allocation unit 15d2 determines the number of usable transport facilities and cargo handling facilities, the number of operators who operate the transport facilities and the cargo handling facilities, and the transport facilities that can be arranged at the entrances of the respective buildings. Calculate the priority order and assignable time zone of product delivery work over the building using at least one of the number, target loading work time, load of cargo handling work, and already assigned work plan. Allocate the work plan for product delivery work from the building to the target period. The planning problem solved here can be handled as a resource-constrained project scheduling problem by treating the operator as a resource and the workload as an evaluation function, but in the following, the planning problem is defined without defining an evaluation value. Explain how to solve the problem.

  When solving a planning problem without defining an evaluation value, first, the building-going product delivery work assignment unit 15d2 compares the earliest time among the scheduled shipping times of products included in the same transportation lot for each transportation lot. As shown in FIG. 16, an over-compartment product delivery work list in which transport lots as shown in FIG. Next, the building supervision product delivery work allocation unit 15d2 selects the superstructure product delivery work in order from the top of the created supervision product delivery work list, and assigns a time zone for assigning the work plan for the selected superstructure product delivery work. Calculate as the recommended time zone. For example, the building-going product delivery work assignment unit 15d2 calculates the latest time among the following times (1) to (3) as the start time of the recommended assignment time zone.

(1) Unloading completion time of a building-over product delivery operation that is stored in the same building as the product included in the selected building-over product delivery operation and that includes products belonging to the same shipping group and has been assigned a delivery plan 2) Time obtained by subtracting a predetermined time from the target loading time (the limit time that can be preceded by the shipping time from the target loading time). The earliest time

  Note that at time (1), the product delivery completion time is the same in the same building, and among products loaded in the same ship and hatch, the delivery work plan has been assigned, that is, the product with higher priority. This is a restriction not to precede. In addition, time (2) is to prevent excessive work (such as transportation work to return quay products to the warehouse) easily occurring when the operation is changed when the shipping time is too much ahead of the target shipping time. It is a restriction. Time (3) is a time that should be taken into account when performing operations such as unloading from a cart by a forklift on the quay. In this case, the capacity of the quay is a limitation. For example, as shown in FIG. 17, when all the products whose shipping operation time precedes are on the quay, if the number of products before the target loading time exceeds the product capacity of the quay, the target product is put on the quay. I can't. For this reason, the building warehousing work assignment unit 15d2 calculates the earliest time T = t1 when the number of products placed on the quay is equal to or less than the product capacity of the quay, and calculates the travel time from the time T = t1 to the quay. The subtracted time is calculated as time (3). In addition, as shown in FIG. 18, the building-going product delivery work allocating unit 15d2 assigns the time obtained by subtracting the unloading time of the transport vehicle from the quay arrival time of the transport vehicle, with the target shipping work time as the arrival time of the transport vehicle. Calculate as the end time of the recommended time zone (latest shipping time).

  Next, the over-building product delivery work assignment unit 15d2 performs the over-building product delivery work based on the information on the load of the warehouse crane that performs the selected over-building product delivery work and the information on the surplus number of operators operating the warehouse crane. The time zone in which the work plan can be allocated is calculated within the range of the recommended allocation time zone. FIG. 19 is a diagram illustrating an example of information regarding the load of the warehouse crane. In the example shown in FIG. 19, the value of the warehouse crane load in the time zone in which the emergency delivery work and the over-building product delivery work are assigned is set to 1, and the emergency delivery work and the over-building product delivery work are not assigned. The value of the warehouse crane load in the belt is set to zero. Therefore, the over-building product delivery operation can be assigned to a time zone in which the value of the warehouse crane load is set to zero.

  However, warehouse cranes also perform tasks other than emergency shipping work and over-building product shipping work. Therefore, the assignable time zone of the work plan for the product delivery work over the building needs to be determined in consideration of the load of the warehouse crane accompanying the work other than the emergency delivery work and the product delivery work over the building. FIG. 20 is a diagram in which information related to the load of the warehousing operation is added to the information related to the load of the warehouse crane shown in FIG. As shown in FIG. 20, when taking in the warehousing work, the time zone (for example, 5/8 4: 00-5: 00) that can be assigned can be assigned when only the warehousing work is considered. It is no longer in the time zone. For this reason, the building building product delivery work assignment unit 15d2 calculates a time zone in which the work plan for the selected building delivery product delivery work can be assigned based on the information on the load on the warehouse crane shown in FIG.

  On the other hand, the over-building product delivery work allocating unit 15d2 calculates a time zone in which the work plan for the selected over-building product delivery work can be assigned using information on the number of operators who can operate the warehouse crane. Specifically, the building-going product delivery work assignment unit 15d2 calculates the number of operators assigned for each group in the planning target period as shown in FIG. 21A from the operator assignment plan information shown in FIG. FIG. 21A shows the number of operators assigned in the planning target period calculated for group 1 shown in FIG. Further, the building building product delivery work assignment unit 15d2 provides information on the load on the warehouse crane during the planning period as shown in FIG. 21 (b), based on the work plan for the emergency delivery work and vehicle shipment work that have already been assigned. calculate. In addition, FIG.21 (b) has shown the load in the planning object period of the warehouse crane which belongs to the group 1 shown in FIG. Next, the building-going product delivery work allocating unit 15d2 subtracts the information regarding the load on the warehouse crane shown in FIG. 21B from the number of operators assigned as shown in FIG. The information regarding the number of surplus operators within the planning target period as shown is calculated for each group. As a result, the building-based product delivery work allocating unit 15d2 calculates a time zone in which the operator's surplus number of persons is greater than or equal to a predetermined value as a time zone in which the work plan for the building-over product delivery work can be assigned.

  Finally, the building-going product delivery work assignment unit 15d2 has an assignable time zone calculated from information on the load on the warehouse crane and an assignable time zone calculated from information on the surplus number of operators operating the warehouse crane. The overlapped time zone is calculated as the assignable time zone for the building-over product delivery work plan.

  Next, the building-going product delivery work assignment unit 15d2 is assigned to the building within the available time zone as long as it satisfies the building frontage restrictions (not exceeding the maximum number of trucks that can be placed in the frontage) and the number of transport vehicles used. The work plan for the overgoing product delivery work is allocated in front-end, and the bogie movement work plan to the berth and the product loading work plan in the berth are assigned based on the quay margin. Regarding the restriction on the number of transport vehicles used, the building building product dispatching work allocation unit 15d2 calculates the number of used vehicles from the information on the assigned dispatching work plan, so that the number of used vehicles does not exceed the specified number. Allocate the plan from the front. Specifically, as shown in FIG. 22, the building-going product delivery work assignment unit 15d2 calculates the change over time in the number of used vehicles from the assigned work AC. In the example shown in FIG. 22, since the number of used vehicles has reached the prescribed number during the time T = t1 to t2 by the assigned work A to C, the over-building product delivery work assignment unit 15d2 A delivery work plan for a transportation lot with a transportation lot ID = SK0012 is assigned to T = t2. In addition, the minimum required time length is set for the vehicle transportation work, and it is a constraint condition that the work is longer than this set value. Thereafter, the over-building product delivery work assignment unit 15d2 repeatedly executes the same process until work plans are assigned to all the over-building product delivery work listed in the over-building product delivery work list. Thereby, the process of step S30 is completed, and the warehouse work plan creation process proceeds to the process of step S31.

  In the process of step S31, the warehousing work assignment unit 15d3 performs an operator and warehousing work assignment process. Specifically, the warehousing work assignment unit 15d3 divides the planning target period into a plurality of time zones, and selects the first time zone in which the operator's assignment processing is not performed. Next, the warehousing work assigning unit 15d3 calculates the operator margin value Sf in the selected time zone for each warehouse crane in the same group, and assigns the operators in order from the warehouse crane having the smallest operator margin value Sf. In addition, for the time zone in which the work plan for the product delivery work over the building is already assigned, the warehousing work assignment unit 15d3 performs the assignment process of the operator on the assumption that the operator is always assigned to the warehouse crane. Thereafter, the warehousing work allocating unit 15d3 repeatedly executes the same processing until the operator is allocated to all time zones. Finally, the warehousing work allocating unit 15d3 performs warehousing work assignment processing using the operator assignment status, the number of frontage arrangement trolleys, and the facility operational status (not to be assigned during non-working hours) as constraints.

  Here, the operator margin value Sf is a difference value Sf (= Cf−Lf) between the work load value Lf and the operator processing capacity value Cf, and the smaller the value, the greater the work load of the warehouse crane. To do. The workload value Lf depends on the work amount related to only the individual building in the selected time zone and the remaining work amount (details will be described later) in the previous time zone (preceding time zone) of the selected time zone. It is a determined value. The operator processing capacity value Cf is a value determined by the selected time zone, the number of buildings constituting the group, and the amount of work to be dispatched for the assigned vehicle shipping work. The work load value Lf and the operator processing capacity value Cf can be calculated from the linear function or the nonlinear function of the values described above. Further, the remaining work amount in the preceding time zone can be calculated by the following formula. Further, the work amount can be calculated based on the time required for the work or the number of products to be handled. Thereby, the process of step S31 is completed and a warehouse work plan creation process progresses to the process of step S32.

[Remaining work volume in the preceding time zone]
(1) When an operator is assigned to the corresponding building in the preceding time zone (1-1) The operator margin value Sf of the corresponding building is positive: the remaining work amount = 0 (meaning that all work can be processed because there is a margin)
(1-2) Operator margin value Sf of the corresponding building is negative: remaining work amount =-(operator margin value Sf) (calculation of the amount of work that the operator could not process)
(2) When an operator is not assigned to the corresponding building in the preceding time zone Remaining work amount = workload value Lf of the relevant building in the preceding time zone (the operator does not assign the work amount as it is)

  In the process of step S32, the direct beach assignment work allocating unit 15d4 assigns the work plan of the product delivery work classified as the product to be directly subjected to the beach removal work in the process of step S26 to the planning target period. Note that the processing content of step S32 is different from the processing content of step S12 only in that the work plan for the outgoing work is assigned only in the time zone to which the operator is assigned, and thus detailed description thereof is omitted. Thereby, the process of step S32 is completed and the warehouse work plan creation process proceeds to the process of step S33.

  In the process of step S33, the plan output device 16 outputs information relating to the work plan assigned to the plan target period as warehouse work plan information. Since the processing content of step S33 is the same as the processing content of step S13, detailed description thereof is omitted. Thereby, the process of step S33 is completed and a series of warehouse work plan creation processes are completed.

  As is clear from the above description, in the warehouse work plan creation process according to the second embodiment of the present invention, the building-building product delivery work assignment unit 15d2 has the number of usable facilities and the number of operators operating the warehouse crane. Using the information on the number of transportation equipment that can be placed at the entrance of each building, the target loading work time, the load on the cargo handling work, and the work plan that has already been assigned, the priority order of the product delivery work over the building and the assignable time zone And assigns the work plan for product delivery work over the building in order of priority to the assignable time zone in order of priority, so the warehouse work plan taking into account the operator's assignment plan for the warehouse crane in each time zone within the planning target period Can be created.

〔Example〕
Using the warehouse work plan creation processing according to the second embodiment of the present invention, a warehouse work plan was created with the number of buildings: 12 buildings, the number of loading cranes: 7, and the planning period: 24 hours. It was confirmed that the work interruption time (time to wait for delivery from the warehouse) was reduced to less than half compared with the actual results, and that work efficiency could be greatly improved. In addition, since the calculation time is less than 5 minutes, it was confirmed that the plan can be corrected promptly even when there is a gap between the plan and the actual result due to disturbance of actual operation.

  Although the embodiment to which the invention made by the present inventor is applied has been described above, the present invention is not limited by the description and the drawings that form a part of the disclosure of the present invention according to this embodiment. For example, in the present embodiment, the warehouse work time determination unit 15d assigns work plans for four warehouse tasks, that is, an emergency delivery work, a building-over product delivery work, a warehouse work, and a direct beaching work to the planning period. The work plan to be allocated in the target period varies depending on the warehouse and shipping equipment. Specifically, for a warehouse that does not perform direct beaching work, a work plan for three warehouse operations, that is, an emergency shipping operation, a building-over product shipping operation, and a warehousing operation may be assigned to the planning target period. Accordingly, the warehouse work time determination unit 15d targets the work plan for at least one of the emergency work, the product delivery work over the building, the warehouse work, and the direct beaching work according to the warehouse and the shipping equipment. You should assign it to the period. As described above, other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

1a, 1b, 1c Product warehouses 1a1 to 1a3, 1b1 to 1b3, 1c1 to 1c3 Building 2a1 to 2a3, 2b1 to 2b3, 2c1 to 2c3 Warehouse cranes 3 Products 4 Carrying vehicle 4a Dolly 4b Traction unit 5 Forklifts 6a, 6b, 6c Outage port 7a, 7b, 7c Ship 7a1, 7a2, 7b1, 7b2, 7c1, 7c2 Hatch 8a, 8b, 8c Loading crane 10 Warehouse work plan creation system 11 Planning object information storage device 11a Product information database (DB)
11b Progress database (DB)
11c Vehicle transportation plan information database (DB)
11d Shipping plan database (DB)
12 Shipping Condition Input Device 13 Equipment Information Database (DB)
14 Plan condition input device 15 Plan creation device 15a Work creation unit 15b Precedence relationship creation unit 15c Target shipping time calculation unit 15d Warehouse work time determination unit 15d1 Emergency delivery work assignment unit 15d2 Overbuilding product delivery work assignment unit 15d3 Warehousing work assignment unit 15d4 Direct beach assignment work allocation unit 16 Plan output device

Claims (5)

Ship the products stored in the warehouse to the product yard provided on the quay and load the products transported to the product yard using the loading crane provided on the quay into the hatch of a ship anchored on the quay A warehouse work plan creation device for creating a work plan for work,
Precedence data indicating the predecessor relationship of each product's loading operations according to the location of the product yard that transports the product, the loading crane used to load the product, the hatch position of the vessel that loads the product, and the loading sequence of the product in each hatch A predecessor relation generation unit for generating
Using the preceding relationship data generated by the preceding relationship generating unit, a target shipping time calculating unit that calculates a target shipping work time for each product;
A work plan in the warehouse is created so that the product is transported to the product storage by the target shipping operation time of each product calculated by the target shipping time calculation unit, and the product is stored by the target shipping operation time by the target shipping operation time. If there is a product that cannot be transported to the warehouse, a warehouse operation time determination unit that corrects the target shipping operation time of the shipping operation of the product and the shipping operation subsequent to the shipping operation using the preceding relationship data,
A warehouse work plan creation device characterized by comprising: The warehouse work time determination unit
An urgent issue work plan assignment unit that assigns work plans for product issue work with a high processing priority to the target period;
An over-building product unloading work allocating section for assigning a work plan for unloading work of products that need to use a transport facility when transporting a product from a warehouse to a product storage area,
A direct beach assignment work allocating section that assigns a work plan of product unloading work that does not need to use the transport equipment when transporting a product from a warehouse to a product storage area in the planning target period;
A warehousing work allocating unit for allocating a work plan for a cargo handling operation of a product to be delivered to a warehouse during the planning target period, and at least one allocating unit of
When assigning a work plan, the assigning unit determines a start time of each work by correcting a target loading work time of the loading work of the product and the loading work subsequent to the loading work using the preceding relation data. The warehouse work plan creation device according to claim 1, wherein:   The building-going product delivery work allocation section includes the number of usable transportation equipment and cargo handling equipment, the number of operators operating the transportation equipment and cargo handling equipment, the number of transportation equipment that can be placed at the entrance of each building, and the target loading work time. The priority order of the outgoing work and the assignable time zone are calculated using at least one information of the load of the cargo handling work and the already assigned work plan, and the workable time of the outgoing work can be assigned. The warehouse work plan creation device according to claim 2, wherein the warehousing work plan creation device is assigned to the belt in the order of priority.   The warehousing work allocating unit divides the planning target period into a plurality of time zones, and determines whether or not to assign an operator who operates the cargo handling equipment based on the already assigned cargo handling work plan and the load information of the cargo handling work. 4. The warehouse work plan creation according to claim 2, wherein an operator who operates the cargo handling equipment is assigned and a work plan for the cargo handling work is assigned in a time zone in which no cargo handling work is assigned. apparatus.   Shipment condition input for inputting information regarding the position of the product storage site for transporting the product, the loading crane used for loading the product, the hatch position of the vessel for loading the product, and the loading order of the products in each hatch to the preceding relationship generation unit The warehouse work plan creation device according to any one of claims 1 to 4, further comprising a device.

Images