JP3699361B2 - Load management device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to management of cargo work in a distribution warehouse. The present invention rationally and efficiently performs management of a group of articles handled in a warehouse, in particular, management of loading operations such as assortment of goods, movement of articles, etc. that require manual work by an operator. It is related to the technology.
[0002]
[Prior art]
As a load operation in a distribution warehouse, there is an automatic warehouse that performs load storage, picking, assortment, and the like. This management by the automatic warehouse has an advantage that labor saving can be achieved when standardized individual articles or standardized article groups are handled in units of pallets. However, in a distribution warehouse, not only the standard-sized items but also various-sized items and a wide variety of items are handled at the same time. Don't be. For this reason, loading work such as picking, moving, and assorting goods by a person is indispensable. In particular, depending on the article, various kinds of articles having different shapes, sizes, etc. must be picked, moved and packed manually.
[0003]
[Problems to be solved by the invention]
Here, as a manual loading operation, a description will be given of a loading operation in which an article instructed for each destination is taken out from a storage location and brought to a place where a necessary number of items are collected together. With the automatic warehouse, the standardized size of goods is taken out from the automated equipment, and the required quantity of goods is arranged at each destination by using an automated assortment device. Can do.
[0004]
However, when considering manual loading work, the operator takes out the indicated number of items from the storage location for each item, such as a storage shelf or a flat storage location, based on the instructions. Then, it is placed on a cargo cart (cart) for loading work and moved to a place where delivery is carried out, for example, a place where a vertical conveyance facility such as an elevator is located. At this time, for example, in a system that gives a work instruction to a worker from a management device that assigns a higher-level work, the worker takes out the number of articles designated by the management device that manages the work (this is called picking), and the car Store and move them so that they are stacked. However, it is not always possible to store the article as instructed in the cart. Since articles of various sizes are stored in the basket car, the number of articles that can be stored differs depending on how they are stacked, and the number of articles that can be stored in the basket car varies depending on the shape of the article. For this reason, the number of articles that can be stored in the basket car varies depending on the person who works.
[0005]
The need for human loading work is because flexible judgment and processing by humans are possible, and the way to define work that is not mechanically flexible is the smooth flow of goods in the warehouse and the work. Otherwise, efficient work cannot be performed, and there is a risk that logistics may be delayed. In addition, if the upper management apparatus tries to determine whether or not to suspend or cancel the work, the algorithm becomes complicated, and there is a possibility that it cannot cope with the occurrence of an actual complicated event.
[0006]
From the above-mentioned viewpoint, the present invention allows an input to interrupt and stop at the operator's judgment and end the instructed cargo work even if the cargo work instructed by the operator's judgment is incomplete. It is an object of the present invention to propose a method and apparatus that can perform flexible work management by allowing the remaining cargo work instructed in the case to be separately assigned as other work. In addition, when the work is interrupted or stopped, the label printed by the terminal carried by the worker at that time is attached to the article or the storage means, and the load work before the interruption or cancellation in the work is performed. It is an object of the present invention to provide a method and an apparatus capable of transmitting information on the load operation in a subsequent process. It is another object of the present invention to provide a method and apparatus that can reduce the burden on a higher-level management apparatus that assigns work to workers.
[0007]
[Means for Solving the Problems]
Dividing the work of loading work, picking up the goods and transporting them to the designated place, distributing the goods in the designated place to the designated destination storage places, etc. As a unit, the loading process is managed so that a work instruction is given for each work unit. At this time, it is assumed that the operator is instructed from the upper management apparatus for each work unit. Considering the case of picking this work, we gave a work instruction to pick 20 A articles and 20 B articles, put them in one basket car, and move to a designated place. And At this time, when it is judged that 20 items A are picked and put into a cart, and then when the item B is picked up, the cart is full, the operator is allowed to finish the instructed operation and Enter end. The upper management device that manages the load work assigns the remaining finished work to another work unit when recalculating the work assignment. For example, the work instruction is assigned as the work of another worker or a work instruction in which the remaining 20 B articles are picked up in the next work of the worker. In this way, it is possible to flexibly manage the cargo work by allowing the worker to make a determination to determine the end of the work in the management of the cargo work.
[0008]
In other words, the present invention defines a group of cargo operations that can be performed by one worker for each operation process as a cargo operation that is a unit of allocation, and the worker instructs the worker for each operation unit, and the worker performs this operation. When the operator inputs from the terminal owned by the worker that the work unit is to be terminated even if it is in the middle of the work, the management device that gives the work instruction to the worker The remaining work is assigned as another work unit.
[0009]
In addition, when the work instruction of the management apparatus is an instruction to take out the designated number of articles from the storage position of the article, store it in a predetermined storage means, and move it to the designated position, the worker is instructed. If the number of articles does not fit in the storage means, the operator inputs an interruption of work from the terminal, and the management device instructs the load work of the remaining number of pieces of the inputted work to be interrupted. Can be assigned as a separate unit of work.
[0010]
Further, according to the present invention, when the operator takes out the instructed article from the storage location and stacks it in the storage means to which the identification code is attached, and when the designated number is loaded, the identification code of the article is given to the terminal. Then, take the instructed work to take out the next instructed article from its storage location and load it in the storage means, and when the instructed loading operation is completed, the label printed by the terminal is placed in the storage means. A method for managing articles to be affixed to stacked articles, and when an operator determines that the specified number of articles cannot be accommodated in the storage means, he / she performs an input from the terminal to end the loading operation, The operation is completed by attaching a label to be printed by the terminal to the storage means, and then the loading operation instructed by the terminal is performed.
[0011]
Further, the present invention is a warehouse management device that defines a group of work performed by the worker as a unit of work for the worker's cargo work, and issues a work instruction to the worker in this unit of work. When the worker inputs that the work is to be terminated in the middle of the designated work unit, the remaining part of the suspended work includes means for assigning work as another work unit. To do.
[0012]
The management device is a means for instructing a worker to carry out a cargo work by instructing a terminal carried by the worker, as an operation instruction, an article to be picked for the work to be performed by each worker and the number thereof. When the operator inputs that the work instructed via the terminal is to be completed, the remaining part of the work that has been completed as the completion of the work up to the input is assigned as a work unit. be able to.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
FIG. 1 is a diagram for explaining the general flow of goods in a warehouse and the work thereof. FIG. 2 is a diagram showing a flow of storing goods in the warehouse. FIG. 3 is a diagram showing a flow of shipping an article to a delivery destination in a packing unit, FIG. 4 is a diagram showing a work flow of picking a loose article and shipping it to the delivery destination, and FIG. 5 is a movement of the article. FIG. FIG. 6 is a diagram showing the configuration of the upper management system that controls the cargo work in the warehouse. FIG. 7 shows an example of the configuration of a management system for assigning work (the work management CPU and data input / output to / from it). FIG. 8 is a flowchart illustrating an example of picking work.
[0015]
First, the flow of goods in the warehouse and the work in this embodiment will be described.
[0016]
As shown in FIG. 1, an article received from a factory or the like is first inspected and stored in a predetermined storage location based on the inspection. Storage locations include an automatic warehouse, a dangerous goods warehouse, an SA frontage, each floor frontage, and the like, which are transported to and stored in the respective storage locations by the received goods. The articles stored and stored are picked up according to a shipment plan, sorted according to each delivery destination, inspected, and then assorted. The finished goods are loaded into each delivery vehicle based on the shipment plan, and delivered to a store or terminal as a delivery destination. It should be noted that the shipment inspection work does not necessarily have to be performed after sorting, and can be performed simultaneously with or after the assortment, and the sorting, shipment inspection, and assortment can be grasped as simultaneous operations.
[0017]
Next, with reference to FIG. 2, the flow of storing goods in the warehouse will be described. In FIG. 2, the part assigned a number to N indicates the identification number of the work unit instructed to the worker.
[0018]
First, when an article loaded vehicle arrives from a factory or the like, an arrival vehicle arrival registration is performed (N00). Then, inspection is performed based on the arrival schedule and a label indicating the storage destination is attached (N10). Also, expiry date management products and lot management products that are specially handled are temporarily received and a storage location label is attached in accordance with a separate storage instruction (N10). Further, an unscheduled item such as an excessive quantity is returned (N10).
[0019]
As storage storage locations in the warehouse, there are automatic warehouses, SA frontage, dangerous goods warehouses, front entrances to each floor, and other warehouses, and they are sent to the respective storage storage locations by the attached storage destination labels (N01, N50, N60). , N70, N20). When the car is stored in a car, a car basket label is attached to each car. Also, no storage destination label is issued for the articles stored in the automatic warehouse.
[0020]
The frontage refers to a place where articles are laid flat, and the frontage is stored in a state of being stored in a cart or palletized at the frontage on the second to fourth floors. Articles stored at each floor are stored in pallets or carts and transported to each floor by vertical transport equipment, where they are temporarily placed at each floor and stored at each front (N29, N39, N49). The SA frontage is a place where articles are stored in units of pallets, and a forklift is used for the work at this time.
[0021]
Next, an operation for picking and storing articles stored and stored, assembling, assembling, and shipping will be described with reference to FIG. The work shown in FIG. 3 is an example of a work flow in the case of shipping by packing unit for each delivery destination.
[0022]
Pick the items stored in each frontage according to the work instructions. As the picking, an operation of picking an article according to an instruction for the total number of sorts for each product type (K20, K30, K40) and an operation of picking an instructed quantity for each sort destination (K21, K31, K41 is expressed here as picking), and is transported to a temporary delivery place where a vertical transport facility is provided. Apart from this, the goods instructed from the automatic warehouse, the SA frontage, and the dangerous goods warehouse are picked by the shipment plan (K50, K10, K60, K70).
[0023]
The sorting is expressed as “seeding” in FIG. 3, and the picked articles are sorted and collected. At the time of sowing, the products are inspected at the same time (the units of work here are K90, K80, K60, K50, K10). Here, when the assortment is completed for each assortment location, an assortment completion label is attached. Articles that are stocked and delivered directly to each store are stocked by direct delivery minute-unit unit pseudo-stores, and are linked to the direct delivery vehicle and loaded (E90). In addition, what is delivered to the terminal or the like is stocked in units of relays, linked to the relay car, and loaded (E90).
[0024]
FIG. 4 shows a work flow (here, referred to as rose total amount picking) in which goods are picked up in a basket car until the basket car is full and transported to a cart sorting room where the goods are sorted into delivery destination units. In the cart sorting room, like B20, B30, and B40, the items stored in the 2nd, 3rd, and 4th floor entrances are picked up and loaded from the cart, and the carts are sorted into stores for temporary storage. Temporary storage at the storage location, delivery from the storage location in the order of delivery destination in units of delivery vehicles, and pallet stacking (Oricon stacking). Then, it is placed at a predetermined location in the assortment area, and is loaded into the delivery vehicle and delivered together with the bundled shipment. The work unit in this work flow is given an identification number in which a number is assigned to B, such as B20 and B30.
[0025]
FIG. 5 shows a transport mode in the case where a movement instruction is given paying attention to the movement of the article. For example, articles stored in a separate warehouse are moved to each floor frontage, automatic warehouse, SA frontage, and dangerous goods warehouse via a vertical conveyance facility. These are shown in units of work of M29, M39, M49, M51, M61, and M71. Each unit of work is also shown for a return area, temporary storage, and movement from an automatic warehouse.
[0026]
The above is an example of the work flow in the warehouse.
[0027]
FIG. 6 shows a configuration example of an upper management system that manages cargo work in this warehouse. Picking CPU 61 that performs picking management of articles, work management CPU 62 that performs work management by performing work instructions and scheduling of workers, output of work instructions and other data to each worker wirelessly, work A wireless CPU 63 for processing data input from a person is connected by a bus 64. The wireless CPU 63 is connected to a wireless communication network 65 provided in the warehouse. The wireless CPU 63 is connected to a wireless handy terminal (hereinafter referred to as wireless HT) 66 held by an operator via the wireless communication network 65, so that work instructions and data are stored. Input / output is performed using a wireless line. The wireless HT 66 includes a display unit, a printing unit, and a barcode reading unit, and a work instruction or the like from a higher-level management device is displayed on the display unit. The printing unit prints a storage destination label, a car cart label, an assortment completion label, and the like. The barcode reading unit reads a barcode indicating identification of various labels or the like attached to the article or the car. This wireless HT 66 is carried by each worker, and work instructions and data input / output are performed for each worker.
[0028]
Note that a logistics CPU for managing receipt / shipment plans, a CPU for managing articles, and the like are connected to the bus as separate systems.
[0029]
Next, work assignment (scheduling) of workers in the work management CPU will be described with reference to FIGS.
[0030]
FIG. 7 shows a data flow in the management system for assigning work, and has a configuration corresponding to the work management CPU and picking CPU shown in FIG.
[0031]
The work management CPU includes a scheduler 71 that performs worker assignment calculation. The work management CPU and the picking CPU share and use the worker input constraint condition master 73 in the storage device (shared disk), shift work. Workers are assigned using the planner master 74, the worker master 75, and the work definition master 76. The picking CPU is provided with work unit data creating means 72 for creating picking data. The worker uses the data from the logistics CPU, work definition master 76, and inventory data 77 separately connected via LAN. Create unit-of-work picking data for.
[0032]
Here, the work definition master 76 is a file in which work processes are defined for each work unit described above. For each work unit number, a work process name, standard man-hour productivity, work process definition, work unit, and wireless HT screen are displayed. Have data. For example, the work unit N20 has a work process name “bound to each floor for storage”, a standard time productivity “388”, and a work process definition “car inspection vehicle N10, N11 of each floor to carry elevators to the elevator → each floor Data for “To”, “Unit of work” for each car, and “Storing each floor” for the wireless HT screen are defined. These data are set for each unit of work.
[0033]
The worker input restriction condition master 73 is a file having data such as the number of workers that can be input for each work place and qualifications required for the workers, and these data are set for each work unit number. For example, in the work unit N20 “boundary storage for each floor” in the arrival area on the first floor of the warehouse, the handling is “forklift”, the maximum number of people is “10 people”, the minimum number of people is “1 person”, and the fork qualification is “all people need”. Is set. In addition, the unit of work K90 “packing frontage picking 1F assortment” in the assortment area is “handling” for handling, “20 people” for the maximum number of people, “1 person” for the minimum number of people, and “no need” fork qualification. Data is set.
[0034]
Further, the shift-by-shift work schedule master 74 is a work shift work schedule registered for each worker. A shift number is assigned to a set of start time and end time, and this shift number is assigned to each person's work schedule. Set every day. For example, if the worker code A has a start time of 6:00 and an end time of 15:00 on the day of X month and Y, and the shift number “1” is given to this shift, the date of X month and month of A The shift number “1” is set to the data of the shift. In these shift-by-shift work schedule masters, data on these shifts is registered for each person for monthly work.
[0035]
The worker master 75 is set with data of qualification, worker classification, work place priority, and work classification priority for each worker. The priority order data registered in the work master is data indicating which place and which work is preferentially assigned to each worker, and is set in advance according to the worker's qualification and work efficiency. For example, for worker code A, worker category 1F worker 6, forklift qualification, automatic warehouse operation qualification, and rank 1 “arrival”, rank 2 “automatic warehouse”, rank 3 as priority by work place “Dangerous goods warehouse”, rank 4 “SA frontage” are set, and rank 1 “arrival inspection storage”, rank 2 “packed shipment”, rank 3 “total rose amount” are set as priority by work category. In principle, the priority for each work place and the priority for each work category are set for the worker.
[0036]
Here, an example of a work instruction of K20 (performed by bundling picking (total amount of products) at the second floor frontage) for the worker A will be described. The worker A inputs the name code at the start of work and performs worker registration or work completion notification, and obtains the work unit number (K20) of the worker A already set in the work / work process data by worker. To do. As a work instruction for this work unit, a work instruction “Perform bundling picking (total amount of products) at the frontage on the second floor” is displayed on the display unit of the wireless HT of the worker A. When the work unit number is acquired, the specific work content for each work unit set in the work unit data of the picking CPU is acquired. Since the work unit data is created based on the data received from the logistics CPU by the work unit data creation means, the specific contents of the work unit K20 for the worker A are displayed on the wireless HT.
[0037]
The scheduler 71 assigns (schedules) workers based on the data of the worker input restriction condition master 73, the shift-by-shift work schedule master 74, the worker master 75, and the work definition master 76. This will be described.
[0038]
First, the person who is going to work is grasped from the data of the person who is scheduled to work by shift. In addition, even if it is not a person who is going to work, what was registered as a worker from the wireless HT is also handled as a worker target. Further, from the data on the quantity of goods received and the data on the quantity of shipped goods received from the distribution CPU, the quantity of goods to be worked is grasped and the work man-hour is calculated. As a result, it is possible to grasp the number of people that can be put in and the amount of articles to be processed. Here, as grasping of the article quantity, the article quantity handled for each work unit (each work number) is grasped from the work batch data. At this time, the relationship between the pre-process and the post-process is considered. For example, K90 has K20, K21, K30, and K31 as pre-processes, and the articles in the pre-process are handled as post-processes. Then, the work man-hour is calculated for each work unit. The work man-hour is calculated based on the amount of goods and man-hour productivity. The calculation formula is expressed as (amount of work articles for each work unit) / (man-hour productivity for each work unit). Then, the work man-hour is calculated for each floor, and the work man-hour for each flow is calculated by uniting the floor.
[0039]
Next, workers are assigned based on this data.
[0040]
First, the number of workers for each floor is calculated based on the number of people to whom work is assigned, and the number of people is assigned for each work process. At this time, the maximum number of people restriction in the worker input restriction condition master 73 is taken into consideration. Then, workers are assigned at work places and work sections.
[0041]
This worker assignment is performed so that the following conditions are satisfied.
1) Calculate the work man-hours for each work process based on the data of “standard man hour productivity” in the work definition master. At this time, workers are assigned to all work processes in which work is performed. However, the condition of the maximum number of people frame for each floor in the worker input restriction condition master is satisfied. This means that an operator is assigned as long as there is work even in a work process other than the busiest process, and the worker is not assigned only to a place where the work amount is large.
2) Assign the required number of people according to the number of work steps for each work process.
3) The worker is determined in consideration of the constraint condition of the worker input constraint condition master for each work process, the qualification and priority order of the worker master for each worker.
4) The same worker is continuously assigned to the same work.
5) The maximum number of people that can be input is assigned to the priority batch portion.
6) For an operator with a small number of work steps, determine until the next work process so as not to enter a standby state. In this case, however, allocation is made so that movement between floors is minimized.
7) When the number of work man-hours is reduced at the time of batch convergence, do not allocate excessive numbers of people, and for those that have finished work, clean up, tidy up, and clean (3S). Give instructions.
[0042]
In addition, as short-time work correction, if the assignment work is a small number, the assignment is corrected so as to prepare up to 30 minutes ahead work. This is to extract work that will be completed within 30 minutes, and combine the work. The qualification of the worker and the order of movement (first in the same work place, then in the same floor, then in the other floor) Therefore, workers are assigned by combining work.
[0043]
Worker assignment is performed so as to satisfy such a condition, and a work instruction is given to the worker.
[0044]
Here, a description will be given of the end input and the process in the middle of the work assigned to the work.
[0045]
Assume that there is a work instruction to take out 10 articles a, 10 b, and 20 c. Since the shape of an article varies, and it cannot always be done as instructed, the volume (item name, quantity, volume) of the next work is displayed at the end of each work, and whether the worker can load the next product or not Judging. In other words, when the operator determines that it is difficult to take out 10 articles a and load them on the car, and further take out b and load 10 pieces on the car, and load the next article c on the car, Enter the end of work (interruption). The picking CPU completes the work unit instructed by this end input, and assigns the remaining work (work for taking out 20 articles c) to the same worker or another worker as another work unit.
[0046]
This is shown as a work flow in FIG. 8 as an example of work unit B20 (B30, B40). Assume that in work unit B20 (total rose picking), picking of 10 articles a, 10 articles b, and 20 articles c is instructed. As a work, a basket car is prepared for receiving a work instruction (S81, S82). First, since it is instructed to take out 10 articles a, the identification label of the article a is read, the remaining before being displayed on the wireless HT is checked, 10 articles a are taken out, loaded into the car, and loaded into the wireless HT. Check the remaining after the display. Next, in the next work, an indication that 10 articles b are taken out is displayed on the wireless HT, and if continuation is selected, the storage location of the article b is displayed (S83, S84, S85, S86, S87, S88, S89, S90, S91). Similarly, when the article b is taken out, it is displayed that 20 articles c are taken out next (S88). Here, when the worker sees the work instruction and determines that the article c cannot be loaded on the cart, the work end (interruption) is input (S92). By this interruption input, the picking CPU completes the work unit instructed to the worker and performs reassignment calculation so that the rest of the work unit is assigned as another work unit. The picking CPU creates work instruction data for picking the remaining 20 articles c. The picking of the article c is assigned as one work unit. In this case, it is assigned as the next work unit of the same worker or assigned as the work unit of another worker. The worker waits for the next work instruction in response to the work end input (S94).
[0047]
When the operator interrupts the work for a break or for other reasons and terminates the work, by inputting the interruption, the management system instructs the wireless terminal to print the label and sends the printed label to the article. Or it affixes on a storage means and makes the operation | work an interruption process. In this case as well, the work unit is completed as described above, and the remaining work is managed as a new work unit.
[0048]
Since the scheduler 71 recalculates the allocation every time a cargo operation occurs, the scheduler 71 recalculates the allocation of the cargo operation by the operator's interruption input, thereby responding to a change in the allocation of the cargo operation due to the operation interruption. To do. For the work assignment in the post process, the assignment is recalculated in the same manner.
[0049]
【The invention's effect】
In the present invention, when an end is input before the work unit instructed to the worker is not completed, the work unit instructed to work is completed, and the remaining work details are newly given as other work units. Depending on the situation on the spot, it is possible to flexibly change the cargo work by leaving the initiative of the operator whether or not to interrupt the work.
[0050]
In addition, even when an event occurs that requires the worker to interrupt and end the cargo work due to a break or a sudden phenomenon, the host management device can terminate the work by the end input from the worker. Since it is possible to perform subsequent work assignment and picking data correction, it is possible to respond to the event that has occurred and to carry out the loading work all over the place.
[Brief description of the drawings]
FIG. 1 is a diagram showing an outline of an article flow and work in a warehouse.
FIG. 2 is a diagram for explaining a work flow for receiving and storing goods.
FIG. 3 is a diagram for explaining a work flow for package shipment.
FIG. 4 is a diagram illustrating a work flow for bulk shipment.
FIG. 5 is a diagram for explaining a movement work flow;
FIG. 6 is a diagram showing a configuration of a higher-level work management system.
FIG. 7 is a diagram for explaining the flow of data in work management.
FIG. 8 is a work flow diagram illustrating an example of an end in the middle of work.
[Explanation of symbols]
61 Picking CPU
62 Management CPU
63 Wireless CPU
64 bus
65 Wireless communication network
66 Wireless HT
71 Scheduler
72 Unit of work data creation means
73 Worker Input Restriction Condition Master
74 Scheduled work master by shift
75 Worker Master
76 Work definition master
77 Inventory data

Claims (3)

A work management means for performing an operation for assigning the load work of the worker and instructing the worker of the load work; and a portable for carrying the work instruction to the worker from the work management means carried by the worker With a terminal
The work management means includes a work definition file in which work contents in the warehouse are divided along the flow of goods, and a work process is defined with one divided cargo work as a work unit,
Based on the work definition file, a means for performing a work operation assignment operation of the worker via the terminal according to the worker data, the incoming goods data, and the outgoing goods data is performed. The
A load management device,
When the work management means receives an input to interrupt the work instructed by the worker through the terminal, the work management means performs an interruption process for ending the work, and displays a label indicating that the work has been completed at the terminal. A cargo work management apparatus comprising: means for performing a print instruction and performing a work instruction by performing a work assignment process as a new work unit for a work remaining at the end of the work . Article work instruction of the work management unit, indicating an instruction to move to the designated position stored in the predetermined storage means is taken out number who instructed the article instructed from the storage position of the article, indicated finger When the worker inputs the end of the work from the terminal when the number does not fit in the storage means, the work management means performs the instructed load work for the remaining number of load work that has been input. The load work management apparatus according to claim 1 , further comprising means for assigning the work unit as a separate work unit . When the work instruction of the work management means is taken out from the storage location of the instructed article and loaded in the storage means to which the identification code is attached, and the designated number is loaded, the identification code of the article is given to the terminal If the work instruction is to take out the next instructed article from the storage location and stack it on the storage means, the operator determines that the indicated number of articles cannot be accommodated in the storage means. The work management means instructs the terminal to print a label to be affixed to the storage means, and assigns the next cargo work to the terminal and instructs the terminal. The load work management device according to claim 1, further comprising:

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