JP2018092259A - Selection support system for repair parts of working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve rapidness of maintenance work by improving appropriateness of selection of parts necessary for repair of a working machine and suppressing occurrence of parts returning process.SOLUTION: A selection support system for repair parts of a working machine includes a first parts memory unit 21 for memorizing components of the working machine, a second parts memory unit 22 for memorizing related parts associated with each of the components, a component reading unit 46 for reading and displaying information in the first parts memory unit 21, a related parts reading unit 47 for reading and displaying information in the second parts memory unit 22, a selection parts memory unit 48 for memorizing selection parts selected among at least one of the components and related parts, an order processing unit 49 for outputting an order list, an order history memory unit 23 for memorizing the order list, a return history memory unit 24 for memorizing returned parts, and an information updating unit 31 for cumulatively calculating a relation degree α defined with a probability of parts that have not been returned in ordered parts for each of the selection parts and updating the information in the second parts memory unit 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a part selection support system used for repairing work machines represented by hydraulic excavators, wheel loaders, cranes and the like.

  As an example of using association analysis in the field of manufacturing, there is one that specifies suitability determination conditions for optional parts based on analysis of past results (see Patent Document 1, etc.).

JP 2014-126902 A

  For example, the use of automobiles is limited to traveling, and the conditions of traveling roads, etc., vary depending on whether the road is paved with asphalt or unpaved roads such as mines. Generally determined. For this reason, there are many cases in which failures that occur in the same part have commonality, and it is relatively rare that a long time is required for the selection of parts necessary for repair.

  On the other hand, work machines represented by hydraulic excavators, etc. are not only for civil engineering construction, but also for resource development, building and car dismantling, separation of industrial waste, etc. Can be used universally. Due to these operational specialities, even with the same model, the load conditions vary, and there are a wide variety of events that can cause failure. In many cases, the parts required for repair are not well understood unless work such as disassembly is actually performed. . In addition, since the operation machine stoppage period is directly related to the work delay at the operation site, a rapid response is strongly required to deal with the work machine failure. For this reason, when there is a rough idea of the failure situation, it is often performed that extra parts are ordered, repair work is performed, and unused parts are returned.

  However, useless time and labor required for obtaining and returning unnecessary parts lead to a decrease in efficiency of maintenance work, and if the process of obtaining and returning unnecessary parts becomes normal, it may affect the speed of failure handling. However, the selection of repair parts required for restoration is a highly difficult task requiring abundant experience, and in some cases, it takes a long period of several weeks. This is because it is necessary to find out necessary parts dispersed one by one in a vast amount of information published in a plurality of materials such as a parts catalog of hundreds or thousands of pages in total. In recent years, the number of parts of work machines has been increasing more and more as the structure becomes more complex and multifunctional, and it is not uncommon to find models with more than 10,000 parts.

  The object of the present invention is to support the selection of repair parts for work machines that can increase the validity of the selection of parts necessary for repair of work machines and can improve the speed of maintenance work by suppressing the occurrence of the part return process. To provide a system.

  In order to achieve the above object, according to the present invention, in a selection support system for a repair part of a work machine provided with a main body and a work machine attached to the main body, a first part for storing information on components of the work machine A storage unit; a second component storage unit that stores information of at least one related component associated with each component; and the work machine from the first component storage unit in response to an operation signal input from an operating device. A component reading unit that reads information on the component and outputs the information to the display device, and the second component in response to an operation signal input from the operation device in response to a selection operation of the component displayed on the display device. A related component reading unit that reads information on a related component associated with the selected component from the component storage unit and outputs the information to the display device; and at least one of the component and the related component A selected part storage unit that stores a selected part selected from the ordering list, and the selected part stored in the selected part storage unit in accordance with an operation signal input from the operating device in response to the part ordering operation. An order processing unit that outputs the order, an order history storage unit that stores the order list input from the order processing unit, a return history storage unit that stores return parts for each order list, and the order history storage unit Based on the information stored in the return history storage unit, the degree of relevance defined by the probability of being ordered and not returned is cumulatively calculated for each selected component and stored in the second component storage unit And an information updating unit for updating information on related parts.

  ADVANTAGE OF THE INVENTION According to this invention, the validity of selection of components required for repair of a working machine can be improved, and the quickness of a maintenance work can be aimed at by suppressing generation | occurrence | production of a component return process.

It is a perspective view showing the external appearance of the working machine used as the object of repair work using the repair parts selected with the selection support system concerning one embodiment of the present invention. 1 is a block diagram schematically illustrating an overall configuration of a repair part selection support system for a work machine according to an embodiment of the present invention. It is the flowchart showing the outline | summary of the ordering process procedure accompanying the user's parts ordering operation by the terminal provided in the selection support system of the repair parts of the working machine which concerns on one Embodiment of this invention. It is the flowchart showing the outline | summary of the information update procedure by the server with which the selection support system of the repair parts of the working machine which concerns on one Embodiment of this invention was equipped. It is the figure which represented typically an example of the selection screen of the key parts displayed on the display apparatus with which the selection support system of the repairing parts of the working machine which concerns on one Embodiment of this invention was equipped. It is the figure which represented typically an example of the selection screen of the related components displayed on the display apparatus with which the selection support system of the repairing parts of the working machine which concerns on one Embodiment of this invention was equipped. It is the figure which represented typically an example of the other selection screen of the related components displayed on the display apparatus with which the selection assistance system of the repairing parts of the working machine which concerns on one Embodiment of this invention was equipped. FIG. 7 is a diagram showing a state in which parts are added to the order list on the related parts selection screen shown in FIG. 6. It is a schematic diagram of an example of a component database stored in a first component storage unit provided in a repair part selection support system for a work machine according to an embodiment of the present invention. It is a schematic diagram of an example of the database of the related components memorize | stored in the 2nd components memory | storage part with which the selection assistance system of the repair parts of the working machine which concerns on one Embodiment of this invention was equipped. It is a schematic diagram of an example of the database of the order list memorize | stored in the order history memory | storage part with which the selection assistance system of the repair parts of the working machine which concerns on one Embodiment of this invention was equipped. It is a mimetic diagram of an example of a database of return parts memorized by a return history storage part provided in a selection support system for repair parts of a work machine concerning one embodiment of the present invention. It is a schematic diagram of an example of the database of the ID evaluation value memorize | stored in the ID evaluation memory | storage part with which the selection assistance system of the repair parts of the working machine which concerns on one Embodiment of this invention was equipped. It is a schematic diagram of an example of a database of excluded parts stored in an excluded part storage unit provided in a repair part selection support system for a work machine according to an embodiment of the present invention. It is a schematic diagram of an example of a parts kit database stored in a kit storage unit provided in the repair part selection support system for a work machine according to an embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

1. FIG. 1 is a perspective view showing an appearance of a work machine that is a target of repair work using repair parts selected by the selection support system according to the embodiment of the present invention. In the present embodiment, a hydraulic excavator equipped with a bucket as an attachment of a front work machine will be described as an example of a work machine. However, the present invention can also be applied to assisting selection of repair parts for other types of work machines such as hydraulic excavators having attachments other than buckets and other wheel loaders.

  A work machine 100 illustrated in FIG. 1 includes a main body 110 and a work machine 120. In this example, the case where the main body 110 includes the traveling body 111 and the revolving body 112 and has a self-propelling function is illustrated, but the main body 110 may be a fixed type that does not have a self-propelling function. is there. The turning body 112 is provided on the traveling body 111 so as to be turnable via a turning device (not shown). A driver's cab 114 is provided at the front portion of the revolving unit 112 (upper left side in the figure). A power chamber 115 containing a prime mover, a hydraulic drive device, and the like is disposed on the rear side (lower right side) of the cab 114 in the revolving structure 112. The work machine 120 is a device for performing work such as excavation of earth and sand, and is provided at the front part of the swivel body 112 (in the present embodiment, on the right side of the cab 114). The work machine 120 is an articulated work device including a boom 121, an arm 122, and a bucket 123. The boom 121 is rotated by the boom cylinder 131, the arm 122 is rotated by the arm cylinder 132 with respect to the boom 121, and the bucket 123 is rotated by the bucket cylinder 133 with respect to the arm 122.

2. System Configuration FIG. 2 is a block diagram schematically illustrating the overall configuration of a repair part selection support system for a work machine according to an embodiment of the present invention.

  A work machine repair part selection support system (hereinafter simply referred to as a system) exemplified in the present embodiment includes a server 10 and a terminal 40 connected via a network 70 such as the Internet or a LAN. However, the mode of the system is not limited to the illustrated one, and the function of the server 10 can be distributed to a plurality of servers, and the server 10 can have the function of the terminal 40. When the server 10 functions as a plurality of servers, the plurality of servers may be connected via a LAN, or may be connected via the Internet or the like. When connecting via the Internet, each server may be installed in a remote area within the same country or in different countries. Below, the structure of the server 10 and the terminal 40 is demonstrated.

2-1. Server The server 10 is assumed to be installed in, for example, a company, business office, agency, or the like (hereinafter referred to as a parts management company or the like) that manages parts. The server 10 includes a storage unit 20 and a processing unit 30. The storage unit 20 is a storage device that stores various types of information, and the processing unit 30 is an arithmetic processing unit (such as a CPU) that executes various types of arithmetic processing. The storage unit 20 includes a first component storage unit 21, a second component storage unit 22, an order history storage unit 23, a return history storage unit 24, an ID evaluation storage unit 25, an excluded component storage unit 26, and a kit storage unit 27. It is. The processing unit 30 includes an information update unit 31, a first relevance evaluation unit 32, a second relevance evaluation unit 33, an ID evaluation unit 34, and a kit setting unit 35.

First component storage unit The first component storage unit 21 is a storage device or a storage area that stores information on components of the work machine 100. The first component storage unit 21 stores a database of components of the work machine 100 for each model.

  FIG. 9 is a schematic diagram illustrating an example of a component database stored in the first component storage unit 21. In the database illustrated in the figure, data such as model 21a, part name 21b, order frequency evaluation 21c, drawing 21d, reference numeral 21e, memo 21f, part number 21g, quantity 21h, price 21i, weight 21j, and the like are stored in work machine 100. Are organized by component part.

  The model 21a is a model (for example, model, model code) of a work machine to which each component belongs. For example, component parts are listed and registered for each model. The part name 21 b is a name of a component part of the work machine 100. The component whose name is registered in the part name 21b corresponds to a repair target part (referred to as key part as appropriate) in the work machine 100. The key parts are listed from relatively large units such as booms and arms to components such as cylinders constituting these units, and further components such as cylinders. The order frequency evaluation 21c is identification information given to key parts that are particularly frequently ordered when repairing a model. Drawing 21d is an assembly drawing including key parts, an exploded view, etc., and is drawing data that can grasp the structure of key parts or the relationship with peripheral parts, etc., and image data, design data (CAD data), etc. can be used. (See the drawing display section 55 in FIG. 5). Reference numeral 21e is a key part code described in the drawing data (same as above). The memo 21f is supplementary information for key parts, and includes, for example, information on the amount of oil required for key parts of a hydraulic system and information on a battery to be used for key parts of an electric system. In addition, useful information fed back from actual repair work can be included in the memo 21f. The part number 21g is a unique number given to the key part. The quantity 21h, the price 21i, and the weight 21j are data of the quantity, price, and weight of the key parts, respectively. FIG. 9 shows an example of a database related to key parts, and items can be appropriately selected or added.

Second component storage unit The second component storage unit 22 is a storage device or a storage area that stores information on at least one related component associated with a key part. Related parts are, for example, parts that are candidates for ordering along with repair of the key part A, and include parts of the key part A and peripheral parts related to the key part A. In addition, the key part A itself may be included. good. Information on related parts is updated sequentially every time a part is ordered, as will be described later.

  FIG. 10 shows a schematic diagram of an example of a database of related parts stored in the second part storage unit 22. In the database illustrated in the figure, data such as key parts 22a, part names 22b, relevance 22c, drawing 22d, reference 22e, memo 22f, part number 22g, quantity 22h, price 22i, weight 22j, etc. are stored. Grouped by related parts.

  The key part 22a is information (for example, name, part number) of a key part to which each related part is associated. The part name 22b is a name of a related part. The relevance level 22c is a relevance level of the related parts with the associated key parts. In the present embodiment, for example, assuming that the related part B is associated with the key part A, the probability (cumulative value) that the related part B is ordered and not returned when placing an order for repairing the key part A is obtained. The degree of relevance of the related part B to the key part A is handled. The drawing 22d is an assembly drawing or an exploded view including related parts, and is drawing data that can grasp the structure of the related parts or the relationship with peripheral parts. Image data, design data (CAD data), etc. can be used. Yes (see the drawing display unit 65 in FIG. 7). Reference numeral 22e is a reference numeral of the related component described in the drawing data (same as above). The memo 22f is supplementary information on related parts (similar to the memo 21f). The part number 22g is a unique number given to the related part. The quantity 22h, the price 22i, and the weight 22j are data of the quantity, price, and weight of the related parts, respectively. FIG. 10 is an example of a database related to related parts, and items can be appropriately selected or added.

Order history storage unit The order history storage unit 23 is a storage device or storage area that stores an order list input from an order processing unit 49 (described later) of the terminal 40. One order list includes at least one part selected from the key parts and the related parts (hereinafter referred to as a selected part).

  FIG. 11 is a schematic diagram illustrating an example of an order list database stored in the order history storage unit 23. In the database illustrated in FIG. 10, data such as order list numbers 23a, IDs 23b, key parts 23c, part names 23d, part numbers 23e, quantities 23f, and order date / time 23g are collected in units of order lists. The order list number 23a is literally a unique identification number given to the order list. The ID 23 b is a unique identification number given to the user who has output the order list at the terminal 40. Since the part ordering procedure is performed by logging in to the system using an ID or the like, the user ID can be included in the order list data. The key part 23c is information (name, part number, etc.) of the key part specified when selecting the selected part. The part name 23d and the part number 23e are the name and part number of the selected part included in each order list. The quantity 23f is the order quantity of the selected part included in each order list. The selected parts of the order list include ordered key parts. The key parts are registered in the key part 23c, the part name 23d, the part number 23e, and the quantity 23f when ordered, but are registered only in the key part 23c when not ordered. The order date and time 23g is data of the date and time when the order list was output. FIG. 11 is an example of a database related to an order list, and items can be appropriately selected or added.

Return History Storage Unit The return history storage unit 24 is a storage device or a storage area that stores return parts for each order list. The selected parts listed in the order list are shipped from a parts management company or the like to a designated destination and used for repair work of the work machine 100. As a result, selected parts that are not used for repair work are parts management companies or the like. Returned to. A parts management company or the like performs a return procedure for selected parts (return parts) returned for each order list. In this embodiment, the return procedure data is stored in the return history storage unit 24.

  FIG. 12 shows a schematic diagram of an example of a database of return parts stored in the return history storage unit 24. In the database illustrated in FIG. 10, data such as order list numbers 24a, ID 24b, key parts 24c, part names 24d, part numbers 24e, quantities 24f, order dates 24g, return dates 24i, and the like are collected for each order list. Yes. The order list number 24a, ID 24b, key parts 24c, and order date 24g are the same as the order list number 23a, ID 23b, key parts 23c, order date 23g in FIG. The part name 24d and the part number 24e are the name and part number of the return part included in each order list. The quantity 24f is a return quantity of return parts included in each order list. The return date and time 24i is, for example, the date and time when the return procedure is completed. FIG. 12 shows an example of a database related to returned parts, and items can be appropriately selected or added.

ID Evaluation Storage Unit The ID evaluation storage unit 25 is a storage device or a storage area that stores an evaluation value (described later) of an ID evaluated by the ID evaluation unit 34.

  FIG. 13 shows a schematic diagram of an example of a database of ID evaluation values stored in the ID evaluation storage unit 25. In the database illustrated in the figure, data such as ID 25a and evaluation value 25b are collected in ID units. ID 25a is a registered user ID. The evaluation value 25b is an evaluation value for each ID. FIG. 13 is an example of a database related to ID evaluation, and items can be appropriately selected or added.

Excluded component storage unit The excluded component storage unit 26 has a low degree of association with the associated key parts, and is excluded from the list of the second component storage unit 22 by the first association degree evaluation unit 32 and the second association degree evaluation unit 33. It is a storage device or storage area for storing the related parts.

  FIG. 14 shows a schematic diagram of an example of a database of excluded parts stored in the excluded part storage unit 26. In the present embodiment, the excluded component stored in the excluded component storage unit 26 is, for example, the data of the related component stored in the second component storage unit 22 is moved, and the database items are shown in FIG. Is equal to In other words, items denoted by reference numerals 26a-26j in FIG. 14 correspond to items denoted by reference numerals 22a-22j in FIG. FIG. 14 is an example of a database regarding excluded parts, and items can be appropriately selected or added.

Kit Storage Unit The kit storage unit 27 is a storage device or a storage area that stores kit information set by the kit setting unit 35. In this embodiment, a combination of parts that are frequently ordered together (a certain level or more) is treated as a kit.

  FIG. 15 shows a schematic diagram of an example of a kit database of parts stored in the kit storage unit 27. In the database illustrated in the figure, data such as a kit number 27a, a part name 27b, a part number 27c, and a quantity 27d are collected in units of kits. The kit number 27a is a unique identification number given to each kit. The part name 27b, the part number 27c, and the quantity 27d are the name, number, and quantity of a plurality of parts included in each kit. FIG. 15 is an example of a database related to kit contents, and items can be appropriately selected or added.

Information Update Unit The information update unit 31 accumulates the degree of association defined by the probability of being ordered and not returned based on the information stored in the order history storage unit 23 and the return history storage unit 24 for each selected part. It is a calculation device or a calculation area that calculates the relevant parts and updates the information of the related parts stored in the second part storage unit 22. The degree of association with the associated key part is reduced if there is no ordering, and is zero (0) or no data if there is no ordering in the past. The degree of relevance also decreases when an order is placed but then returned. For example, when a part B is ordered for repair of the key part A, the relevance of the part B to the key part A increases, and when the part B is returned, the relevance of the part B to the key part A is descend. As long as the degree of association varies in this manner, the method of calculating the degree of association is not limited. To give a simple example, the degree of association α (%) of the part B with respect to the key part A can be calculated as follows.

α = {(Nb−Nc) / Na} × 100
Here, Na is the total number of times that parts have been ordered for repair of key parts A, Nb is the number of times that parts B have been ordered out of the total number Na, and Nc is the parts B of Na orders that have been returned. The number of times Na and Nb can be specified based on the storage information of the order history storage unit 23, and Nc can be specified based on the storage information of the return history storage unit 24. The information updating unit 31 calculates the degree of association α for each selected part based on Na, Nb, and Nc, and sequentially updates the degree of association 22c (FIG. 10) in the second part storage unit 22. The calculation and update of the degree of association α is performed when, for example, a new order list is registered in the order history storage unit 23 when a part is ordered from the terminal 40 or a new return is performed in the return history storage unit 24 according to the above-described reversal procedure. When information is registered, it can be in real time. It is also possible to perform the calculation at regular time intervals (for example, at a fixed time every day).

-1st relevance evaluation part The 1st relevance evaluation part 32 is the said key parts A about the selection components B with low relevance degree (alpha) in relation with the key parts A which were related in the memory | storage information of the 2nd component memory | storage part 22. It is a computing device or a computing area that cancels the association with. Here, for example, a setting value α1 is set in advance for the degree of association α, and for each related component B, the degree of association α is less than the setting value α1 by comparing the degree of association α with the setting value α1. It can be determined that the degree of association with the associated key part A is low. The release of the association of the related part B with the key part A is to exclude the part B from the related parts of the key part A. In this embodiment, the data string of the part B stored in the second part storage unit 22 ( This corresponds to moving the data of one line in FIG. However, this is an example of an association cancellation method. When the excluded component storage unit 26 is omitted, the corresponding storage information in the second component storage unit 22 is simply deleted, or the degree of association with the corresponding storage information is low. It can be replaced by adding information to that effect.

  In the example of the key parts A and the related parts B, the reliability of the value of the degree of association α calculated under the condition that the number of orders Na is not more than a certain value (a certain value is set) is insufficient. Therefore, under the condition that the number of times of order Na is equal to or less than a predetermined value, it is not preferable to immediately cancel the association with the key part A on the condition that the degree of association α of the component B is below the set value α1.

Second relevance evaluation unit The second relevance evaluation unit 33 uses the key parts for the related parts B that are estimated not to be used for repairing the key parts A for a long time in the storage information of the second parts storage unit 22. This is a computing device or computation area that cancels the association with A. Here, for example, a set value T1 is set for the elapsed time T from the last opportunity that was ordered and repaired for the associated key part A. Accordingly, by comparing the elapsed time T with the set value T for each related part, it is determined that the related part B whose elapsed time T exceeds the set value T1 has not been used for repairing the key part A for a long time. be able to. The cancellation of the association of the related part B with the key part A is the same as that described in the description of the first relevance evaluation unit 32.

ID Evaluation Unit The ID evaluation unit 34 is a calculation device or calculation area that evaluates the reliability of the user specified by the ID based on the validity of component selection. Here, for example, a set value M1 is set for the number M of other order lists having the same combination of selected parts. Thereby, based on the storage information of the order history storage unit 23, the evaluation value is calculated for the ID for which the order list is selected by comparing the number M of other order lists with the same combination of selected parts with the set value M1. Can do. The calculated evaluation value is stored in the ID evaluation storage unit 25. As the evaluation value to be calculated, information indicating that it is highly evaluated may be added to an ID that is selected with a large value of M with respect to the set value M1, or stepwise from high evaluation to low evaluation. An evaluation value may be calculated. When performing stepwise evaluation, a plurality of set values M1 are set.

  In addition, for example, an evaluation method of lowering the evaluation of an ID whose probability of making a misplaced order that selects a related part B that cannot be used for repair of the key part A exceeds a certain value can be applied. In addition, IDs that set the minimum required essential parts for each key part, and the probability of making a misplaced order that the required related parts are missing for repair of the selected key part exceed a certain value An evaluation method such as lowering the evaluation of can also be applied. ID evaluation information (FIG. 13) by the ID evaluation unit 34 is stored in the ID evaluation storage unit 25. However, for the probabilities exemplified in this paragraph, only those having a denominator of a certain value or more may be validated and reflected in the ID evaluation.

  The ID evaluation may be simply stored as information, but can be added to the calculation of the degree of association α, for example. In this case, the information in the ID evaluation storage unit 25 is read into the information updating unit 31 when calculating the degree of association α, and the degree of association α including selection by a low evaluation ID, for example, is constant for each selection by the ID. For example, the degree of relevance α may be decreased by a percentage (for example, 1%). On the other hand, regarding the degree of association α including selection by a highly evaluated ID, the degree of association α can be increased by a certain percentage (for example, 1%) for each selection by the ID.

Kit Setting Unit The kit setting unit 35 is a calculation device or calculation area that sets a certain order list item as a kit based on the storage information of the order history storage unit 23. Here, a setting value M2 is set for the number M of other order lists having the same combination of selected parts, and the selected parts of the order list where M> M2 is set as a kit by comparing M with M2. Information relating to the contents of the set kit (FIG. 15) is stored in the kit storage unit 27.

2-2. Terminal The terminal 40 is used by the user, and only one terminal is shown in FIG. One terminal 40 may be used, but a plurality of terminals 40 are assumed. As the terminal 40, a fixed terminal such as a desktop personal computer, a portable terminal such as a notebook personal computer or a tablet personal computer, or the like is used. The user who uses the terminal 40 is, for example, an employee who is in charge of after-sales service such as a service engineer in a parts management company or the like. The terminal 40 includes a calculation unit 41, an operation device 42, a display device 43, and a selected component storage unit 48. The operation device 42 is for a user to perform various input operations (keyboard, mouse, touch panel, etc.). The display device 43 displays information output from the calculation unit 41 (a monitor or the like) according to the display signal from the calculation unit 41. The calculation unit 41 includes a component reading unit 46, a related component reading unit 47, and an order processing unit 49.

Component reading unit The component reading unit 46 is a calculation device or calculation region that causes the display device 43 to display the key parts selection screen 50 (FIG. 5). For example, the component reading unit 46 reads information on key parts of the work machine from the first component storage unit 21 in accordance with an operation signal input from the operation device 42. Then, a display signal is output based on the information read from the first component storage unit 21 and the key parts selection screen 50 is displayed on the display device 43.

  Here, FIG. 5 is a diagram schematically illustrating an example of a key parts selection screen. As shown in the figure, on the key parts selection screen 50, an order list confirmation button 52, an order list deletion button 53, a tree display section 54, a drawing display section 55, a key parts list 56, and the like are displayed. The selection screen 50 shown in the figure is displayed by operating a model selection unit 51 that is an input area for selecting a model of the work machine 100, for example. The model selection unit 51 can use a pull-down list or a search window. The models that can be selected by the model selection unit 51 are the models registered in the model 21a of the database in FIG.

  The order list confirmation button 52 on the selection screen 50 is a button for confirming the current order list, and a confirmation screen (not shown) is displayed by operating this button. The order list deletion button 53 is a button for canceling the current order list, and the order list is cleared by operating this button.

  The tree display unit 54 is a display unit that displays the elements of the work machine 100 in a tree format, and the dependency relationships between components are arranged hierarchically. The tree display unit 54 is displayed based on the database shown in FIG. The drawing display unit 55 is a display area for displaying a drawing including the element selected by the tree display unit 54, and the user appropriately uses this drawing display for reference of component selection. The data displayed on the drawing display unit 55 is data registered in the drawing 21d of the database in FIG. As shown in the figure, the drawing display unit 55 includes an operation unit that can perform operations such as enlargement, reduction, movement, and rotation of the drawing.

  The key parts list 56 is a list of parts constituting the element selected in the tree display unit 54, and the user selects a key part from the list. The key parts list 56 is displayed based on the database of FIG. The key parts list 56 includes display fields for a check box 56a, a selection button 56b, an order frequency 56c, a code 56d, a memo 56e, a part number 56f, a quantity 56g, a part name 56h, a price 56i, and a weight 56j. The selection button 56b is a button for selecting a key part, and the selection status can be confirmed by a check box 56a. This selection can be canceled by a selection cancel button 56k. When the add button 56l is operated, the selected key part is added to the order list. Order frequency 56c, reference numeral 56d, memo 56e, part number 56f, quantity 56g, part name 56h, price 56i, and weight 56j are displayed based on the corresponding information in the database of FIG. When the button in the memo 56e column is operated, a supplementary information confirmation screen (not shown) is displayed. Further, the value displayed in the quantity 56g is not a fixed value, but can be specified at the time of ordering procedures. When the data of the order list is accumulated, a quantity with a lot of track record is adopted by the information update unit 31 in combination with the key parts, and this is reflected on the display of the quantity 56g.

Related Component Reading Unit The related component reading unit 47 is a calculation device or calculation region that outputs a related component selection screen 60 (FIG. 6) to the display device 43. For example, the related component reading unit 47 is selected from the second component storage unit 22 in accordance with an operation signal input from the operation device 42 in accordance with a key part selection operation on the selection screen 50 displayed on the display device 43. Read the related parts information related to the key parts. Then, a display signal is output based on the information read from the second component storage unit 22 and the related component selection screen 60 is displayed on the display device 43.

  FIG. 6 is a diagram schematically showing an example of a related parts selection screen. As shown in the figure, on the related parts selection screen 60, a related parts list 61, a relevance degree selection button 62, a related parts list 61, a selection release button 63, an add button 64, and the like are displayed.

  The related parts list 61 is a list of related parts constituting the key part selected in the key parts list 56, and the user selects a related part used for repairing the key parts from the list. The related parts list 61 is displayed based on the database of FIG. The related parts list 61 includes display fields for a check box 61a, a simultaneous purchase rate 61b, a memo 61c, a part number 61d, a quantity 61e, a part name 61f, a price 61g, and a weight 61h. In the related parts list 61, related parts are arranged and displayed in descending order of relevance, but can be rearranged.

  The check box 61a is an operation unit for selecting and confirming related parts. The relevance level selection button 62 is a button for simultaneously selecting related parts having a corresponding relevance level. In this example, when the relevance level selection button 62 labeled “75%” is operated, related parts having a relevance level of 75% or more are simultaneously selected as shown in FIG. When the relevance level selection button 62 labeled “50%” is operated, the related parts having a relevance level of 50% or more and less than 75% are operated. When the relevance level selection button 62 labeled “25%” is operated, the relevance level is 25. % Or more and less than 50% of related parts are selected simultaneously. However, the degree of association and the number of divisions are examples, and the design can be changed as appropriate.

  The selection of related parts can be canceled with a selection cancel button 63. When the add button 64 is operated, the selected related parts are added to the order list. The simultaneous purchase rate 61b, the memo 61c, the part number 61d, the quantity 61e, the part name 61f, the price 61g, and the weight 61h are displayed based on the corresponding information in the database of FIG. The degree of relevance 22c corresponds to the simultaneous purchase rate 61b. Further, the value displayed in the quantity 61e is not a fixed value, and can change as the order list data is accumulated, as in the selection screen 50. Further, when a part number is operated (clicked or the like), a drawing display unit 65 that shows how a related part with the part number is used is displayed as shown in FIG. In the example of FIG. 7, a list 66 of related parts shown in the drawing is displayed together with the drawing, and the related parts can be selected here.

-Selected part memory | storage part The selected part memory | storage part 48 is a calculating device or a calculation area | region which memorize | stores the selected part selected from at least one of a key part and a related part. For example, when a part is selected from at least one of the key parts and the related parts on the key parts selection screen 50 and the related parts selection screen 60, an operation signal input from the operation device 42 in accordance with the selection operation of the selected parts is displayed. Based on this, the selected component storage unit 48 stores the selected component.

  For example, as shown in FIG. 6, when one of the key parts and two selected parts from the related parts are selected and the add buttons 56l and 64 are operated, a total of three selected parts are added to the order list. FIG. 8 is a diagram showing this state, and the number representing the number of selected parts displayed after “Cart” on the order list confirmation button 52 is changed from 0 to 3. The item item and quantity data added to the order list in this way is temporarily stored in the selected part storage unit 48.

Order processing unit The order processing unit 49 outputs a selected part stored in the selected part storage unit 48 as an order list in response to an operation signal input from the operating device 42 in response to the part ordering operation. Or it is a calculation area. For example, when the order list confirmation button 52 is operated in a state where parts are added to the order list, the screen transits to a screen (not shown) for confirming the order procedure. When the confirmation button is operated on the screen after the transition, for example, the order processing unit 49 transmits the order list to the server 10. The selected selected part is registered in the part name 23 d of the database shown in FIG. 11 stored in the order history storage unit 23.

3. Ordering Procedure FIG. 3 is a flowchart showing an outline of the ordering processing procedure of the terminal 40 accompanying the user's part ordering operation. The calculation unit 41 of the terminal 40 executes the following steps S101 to S115 in accordance with the user part ordering procedure.

START-Step S102
The flow in FIG. 3 starts by starting an application installed in the terminal 40, for example, and is repeatedly executed while the application is starting. First, the calculation unit 41 determines whether or not there is a login to the system in step S101, and if there is no login, the flow of FIG. 3 ends. When the user logs in to the system by entering an ID or the like, the calculation unit 41 displays an interface (FIG. 5 and the like) on the display device 43 and moves the procedure to step S102. In step S102, the calculation unit 41 determines whether or not the user continues to log in. If the user has logged out, the flow of FIG. 3 ends. If the user continues to log in, the calculation unit 41 moves the procedure to step S103.

Steps S103-S107
In subsequent step S103, operation unit 41 determines whether or not a work machine to be repaired is selected, and if a model is not selected, the procedure returns to step S102. For example, if a model is selected by the model selection unit 51 (FIG. 5 or the like), the calculation unit 41 moves the procedure to step S104 and instructs the component reading unit 46 to select a key part selection screen 50 of the model selected. (FIG. 5) is displayed on the display device 43 as described above. In subsequent step S105, the calculation unit 41 determines whether or not a key part has been selected. If no key part has been selected, the procedure returns to step S102. For example, if a key part is selected in the key parts list 56 (FIG. 5 or the like), the calculation unit 41 moves the procedure from step S105 to step S106, and selects the key part selected by the add button 56l (FIG. 5 or the like) in the order list. It is determined whether or not an operation to be added to has been performed. When the operation is performed, the calculation unit 41 moves to step S107, adds the selected key part to the order list (stores it in the selected component storage unit 48), and moves the procedure to step S108. When the operation of adding the selected key part to the order list is not performed, the calculation unit 41 skips the procedure of step S107 and moves the procedure from step S106 to step S108. If no key parts are selected, for example, a button (not shown) indicating “not select key parts” is prepared, and the process proceeds to S102 without selecting the key parts by pressing the button. . Further, as another example, the transition destination may be changed depending on the user's convenience, for example, the process proceeds to step S115 when the “do not select key parts” button is pressed.

Steps S108-S111
In the subsequent step S108, the calculation unit 41 instructs the related component reading unit 47 to display the selection screen 60 (FIG. 6) of the related component of the key part selected and displayed on the display device 43 as described above. In subsequent step S109, the calculation unit 41 determines whether or not a related part has been selected. If no related part has been selected, the procedure returns to step S102. For example, if the related part is selected on the selection screen 60 (FIG. 6 etc.), the calculation unit 41 moves the procedure from step S109 to step S110, and the related part selected by the add button 64 (FIG. 6 etc.) is added to the order list. It is determined whether an operation to be added has been performed. When the operation is performed, the calculation unit 41 moves to step S111, adds the selected related part to the order list (stores it in the selected part storage unit 48), and moves the procedure to step S112. When the operation of adding the selected related part to the order list is not performed, the calculation unit 41 skips the procedure of step S111 and moves the procedure from step S110 to step S112. In the case where only the key parts are selected and the related parts are not selected, for example, a button indicating “not select related parts” (not shown) is prepared, and the process goes to step S102 without selecting the related parts by pressing the button. You may make it move. Further, as another example, the transition destination may be changed depending on the user's convenience, such as when the “do not select related parts” button is pressed, the process proceeds to step S105.

・ Step S112-END
In step S112, the calculation unit 41 determines whether or not there is an operation for adding or deleting key parts or related parts to or from the order list by using the selection screens 50 and 60 or the like. When an order list change operation is performed, the calculation unit 41 proceeds to step S113 to change the order list stored in the selected component storage unit 48 and shifts the procedure to step S114. When the operation for changing the order list is not performed, the calculation unit 41 skips the procedure of step S113 and moves the procedure from step S112 to step S114. In step S114, the calculation unit 41 determines whether or not there is an operation for confirming the order list described above. When the operation for determining the order list is not performed, the calculation unit 41 returns the procedure from step S114 to step S102. When an operation for confirming the order list is performed, the calculation unit 41 moves the procedure to step S115, outputs the order list stored in the selected part storage unit 48 by instructing the order processing unit 49 to the server 10, and outputs the order list shown in FIG. End the procedure.

4). Information Update Procedure FIG. 4 is a flowchart showing an outline of the information update procedure of the server 10. The processing unit 30 of the server 10 executes the following steps S201 to S213. The flow shown in the figure can be started when a new order list is registered in the order history storage unit 23 or when a return part is newly registered in the return history storage unit 24. Here, an example in which the flow of FIG. 4 is executed at a set time or at set time intervals will be described.

START-Step S202
For example, when the flow of FIG. 4 is started at the set time, the processing unit 30 causes the information update unit 31 to read the storage information of the order history storage unit 23 and the return history storage unit 24 in step S201. In the subsequent step S202, the processing unit 30 instructs the information updating unit 31 to determine whether or not there is a new order history and a new return history for the parts. If there is no new history, the flow of FIG. Move procedure.

Step S203
In step S203, the processing unit 30 instructs the information updating unit 31 to calculate the relevance α of each component included in the new history. The calculation of the degree of association α is as illustrated above. For example, the total number of parts ordered for the key part A is 100 times, and the order for the part B newly made by repairing the key part A is 60th. If so, the degree of association α of the part B with the key part A is calculated to be 60%. In this case, the value is updated (increased) from 59/99 × 100≈59.6% to 60/100 × 100 = 60%. However, when the part B ordered for the 60th time is returned, the degree of association α decreases to (60-1) / 100 × 100 = 59%.

Step S204
When the procedure moves to step S204, the processing unit 30 instructs the ID evaluation unit 34 to perform the evaluation on the ID related to the new history as described above, and store the ID in the ID evaluation storage unit 25. For example, an evaluation is raised for an ID in which the number M of other order lists having the same combination of selected parts exceeds the set value M1. In addition, for an ID whose number of misselected component selections exceeds a certain value, the evaluation is lowered.

Step S205
In step S205, the processing unit 30 instructs the first relevance evaluation unit 32 and the second relevance evaluation unit 33 to evaluate the relevance α calculated by the information update unit 31 as described above. Run. Here, for example, the degree of association α for each component included in the new history is compared with the set value α1. At this time, the degree of association α to be compared with the set value α1 may be a value that is raised or lowered in consideration of the result of the ID evaluation as described above. Further, for all the related components stored in the second component storage unit 22, the elapsed time T described above is compared with the set value T1.

Step S206
When the procedure is moved to step S206, the processing unit 30 instructs the kit setting unit 35 to make a kit of a combination of parts having a high degree of association α such that the number M exceeds the set value M2, and stores it in the kit storage unit 27. Remember me.

Step S207
When the procedure moves to step S207, the processing unit 30 updates the storage information in the second component storage unit 22. As a result, the relevance of the part included in the new history with the key part is updated. Further, as described above, the association of the related parts with low evaluation by the first relevance evaluation unit 32 and the second relevance evaluation unit 33 is released from the key parts. The information on the related parts whose association with the key parts is released is deleted from the second part storage unit 22 and stored in the excluded part storage unit 26. When the information on the related parts in the second part storage unit 22 is updated in this way, the processing unit 30 ends the flow of FIG.

5. Effect (1) In the present embodiment, the information update unit 31 cumulatively calculates the degree of association of related parts with respect to key parts based on the order history and return history of the parts, and the association associated with the key parts. Update component information. Therefore, when a certain key part A is to be repaired, the user can check and refer to parts that are frequently used in the repair of the key part A, and the user can select parts with high validity. Can support. Since the degree of relevance decreases for the returned parts, it is difficult for the user to select a part with a high return frequency. Thereby, it is possible to suppress the ordering of unnecessary parts and the omission of ordering of necessary parts, and it is possible to reduce the wasteful time and labor required for ordering and returning unnecessary parts and reordering of ordering missing parts. Therefore, it is possible to improve the efficiency of maintenance work, and in turn, the speed of failure response.

  In particular, in the maintenance work of work machines where it is difficult to select repair parts because the same model can be used universally in various places and scenes, unlike cars with limited use for traveling, etc. Improvement is very significant.

  In addition, the items of necessary parts are fluid even in the same key part. For example, if it was previously necessary to replace only the seal, replacement of the seal is not sufficient in the subsequent repair opportunities, and the necessary parts may increase. In addition, the repair work becomes more efficient with the accumulation of repair cases, and the tendency of selected parts may change accordingly. That is, there are cases where combinations of highly-relevant parts that are frequently selected change sequentially. In the case of this embodiment, information on related parts is sequentially updated each time repairs are made. Therefore, the degree of relevance of parts that are included in a highly relevant combination increases, and the combination becomes highly valid. The relevance of parts that are no longer included decreases. Accordingly, the degree of relevance presented by the system also reflects changes in repair work over time and updates of repair work. This point can also greatly contribute to improving the validity of the user's part selection.

  (2) In the present embodiment, the function of the first relevance level evaluation unit 32 excludes those whose relevance level is lower than the set value from the related parts of the key parts. Thereby, for example, the excluded related parts are not displayed in the related parts list 61 (FIG. 6) of the selection screen 60, and the validity of the entire list of related parts is increased, and at the same time, display of unnecessary candidate parts is omitted. This makes it easier for the user to select parts.

  (3) Also, the response may change even with the same failure as the operation period after the vehicle is delivered. For example, for an aircraft that has a long remaining life, for example, in a repair situation where the boom cylinder is a key part, the boom cylinder itself is ordered together with peripheral parts in anticipation of the remaining operating period, and the boom cylinder is new. May be replaced. On the other hand, there is a case where the boom cylinder with a short remaining life is not replaced with a new boom cylinder, and the current boom cylinder is repaired by replacing components. In this case, when the number of repair work such as the latter increases, the degree of relevance decreases with a decrease in the order frequency in the repair work for the boom cylinder, and the boom cylinder itself is deleted from the related parts. There is also. However, when the past adoption record of the boom cylinder is very high, the degree of relevance does not decrease easily, and it seems that the degree of relevance is still high even though it has not been adopted for a long time.

  Therefore, in the present embodiment, the second relevance evaluation unit 33 is provided. If the related parts that have not been ordered for a long time due to the repair of the key parts as described above are excluded from the related parts of the key parts, the trend of repair work is reflected in the list of related parts, The validity of the list of related parts is further improved.

  (4) The selection of repair parts for work machines originally requires advanced knowledge and abundant experience, and it is difficult to eliminate variations in the user's part selection skills. Therefore, some of the user's parts selection may be appropriate for many scenes, and others may not be useful for reference. Therefore, by evaluating the user's ID by the ID evaluation unit 34, for example, by distinguishing the evaluation of the user who frequently makes a highly valid selection from the evaluation of other users, the validity of the relevance of the related parts is updated. Can be expected. For example, there is a reflection method in which the degree of association is increased for a selection made by a user with a high ID evaluation and the degree of association is lowered for a selection made by a user with a low ID evaluation. In this way, even when the total number of orders Na used for calculating the degree of association is small, the validity of the degree of association can reach a certain level in a short time by adding an ID evaluation parameter.

  (5) By providing a kit with a combination of parts that are frequently ordered at the same time by the kit setting unit 35, it is possible to provide repair parts useful for customers (buyers of work machines) by set sales at low cost. it can. Moreover, the efficiency in parts production can be improved by making a kit.

6). In the above, the case where the first relevance evaluation unit 32 is provided to obtain the effect (2) has been illustrated. However, as long as the essential effect (1) is obtained, the first relevance evaluation unit 32 The function is not necessarily required, and the first relevance evaluation unit 32 can be omitted. Moreover, although the case where the 2nd relevance evaluation part 33 was provided in order to obtain said (3) was illustrated, the 2nd relevance evaluation part 33 is also omissible for the same reason. Although the case where the ID evaluation part 34 was provided in order to acquire the said effect (4) was illustrated, the ID evaluation part 34 is also omissible for the same reason. Although the case where the kit setting unit 35 is provided in order to obtain the effect (5) is illustrated, the kit setting unit 35 can be omitted for the same reason.

  Moreover, although the case where the information of the parts subjected to the reversing process is stored in the return history storage unit 24 as the return part information has been exemplified, for example, invoice data is stored in the return history storage unit 24 as the return part information. You may let them. In this case, since the returned parts (that is, parts that were not used for repair) are not included in the invoice data, the returned parts are identified by checking the invoice data for each order list and taking the difference. Can do.

  Further, the second relevance evaluation unit 33 may perform processing for lowering the degree of relevance for a part that has not been used for repair for a long period of time, instead of the process of omitting from the list of related parts.

  In addition, although an example in which a combination of parts that have been ordered together with high performance has been described as a kit, selected parts having a certain degree of association (for example, 90%) or more are made into a kit by the kit setting unit 35. Is also possible.

DESCRIPTION OF SYMBOLS 21 ... 1st components memory | storage part, 22 ... 2nd components memory | storage part, 23 ... Order history memory | storage part, 24 ... Return history memory | storage part, 25 ... ID evaluation memory | storage part, 27 ... Kit memory | storage part, 31 ... Information update part, 32 ... 1st relevance evaluation part, 33 ... 2nd relevance evaluation part, 34 ... ID evaluation part, 35 ... Kit setting part, 42 ... Operation apparatus, 43 ... Display apparatus, 46 ... Component reading part, 47 ... Related part Reading unit 48 ... Selected part storage unit 49 ... Order processing unit 100 ... Working machine 110 ... Main body 120 ... Working machine M ... Number of other ordering lists with the same combination of selected parts M1, M2 ... Setting Value, T ... elapsed time, T1 ... set value, α ... relevance, α1 ... set value

Claims (5)

In a selection support system for repair parts of a work machine including a main body and a work machine attached to the main body,
A first part storage unit for storing information of components of the work machine;
A second component storage unit that stores information on at least one related component associated with each component;
A component reading unit that reads information on components of the work machine from the first component storage unit according to an operation signal input from the operation device and outputs the information to a display device;
In response to an operation signal input from the operation device in response to a selection operation of the component displayed on the display device, information on related components associated with the selected component is read from the second component storage unit. A related component reading unit for outputting to the display device at
A selected component storage unit that stores a selected component selected from at least one of the component and the related component;
In accordance with an operation signal input from the operation device in response to an ordering operation of parts, an order processing unit that outputs the selected parts stored in the selected part storage unit as an order list; and
An order history storage unit for storing the order list input from the order processing unit;
A return history storage unit for storing return parts for each order list;
Based on the information stored in the order history storage unit and the return history storage unit, the degree of association defined by the probability of being ordered and not returned is cumulatively calculated for each selected component, and the second component An information update unit that updates information on related parts stored in a storage unit. In the selection support system of the repair parts of the working machine according to claim 1,
In the storage information of the second part storage unit, the degree of association is compared with a set value for each related part, and the related part whose degree of association is lower than the set value in relation to the associated component is A repair support component selection support system for a work machine, comprising a first relevance evaluation unit for canceling the association. In the selection support system of the repair parts of the working machine according to claim 1,
In the storage information of the second component storage unit, the elapsed time from the last opportunity that was selected and returned with the associated component is compared with a set value for each related component, and the elapsed time is set to the set value. A repair part selection support system for a work machine, comprising: a second relevance evaluation unit that cancels the association between the related parts and the component parts. In the selection support system of the repair parts of the working machine according to claim 1,
Based on the storage information of the order history storage unit, the number of other order lists with the same combination of the selected parts is compared with a set value, and the order list is determined by comparing the number of the other order lists with the set value. An ID evaluation unit for changing an evaluation value for the selected ID;
A repair parts selection support system for a work machine, comprising: an ID evaluation storage unit that stores an evaluation value of an ID evaluated by the ID evaluation unit. In the selection support system of the repair parts of the working machine according to claim 1,
Based on the storage information of the order history storage unit, the number of other order lists having the same combination of selected parts is compared with a set value, and the items of the order list in which the number of other order lists is higher than the set value. A kit setting section for setting the
A repair support part selection support system for a work machine, comprising: a kit storage unit that stores kit information set by the kit setting unit.

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