Control method of display device of work machine

Abstract

To intuitively and easily recognize an operation method of resetting use information of consumables of a work machine.SOLUTION: A control method of a display device 10 of a work machine 1 includes: notifying a user of arrival of a maintenance timing of consumables of a work machine 1 requiring maintenance; displaying the consumables requiring the maintenance as a function setting item on a display 13 of the display device 10; receiving selection of the function setting item of resetting integral time used for the consumables stored in the work machine 1; and displaying a reset setting screen 60a capable of setting whether or not to reset the integral time on the display 13.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for controlling a display device provided on a work machine such as a construction machine. [Background technology]

[0002] Conventionally, work machines such as construction machines are equipped with display devices that display various information. Furthermore, work machines are equipped with consumables that require maintenance depending on their use. By monitoring the cumulative time that the consumables have been used, the work machine can detect when the time for maintenance of the consumables has arrived and notify the operator of the arrival of the time for maintenance of the consumables via the display device.

[0003] For example, the display device of a work machine disclosed in Patent Document 1 displays a maintenance mark on the display screen of the display device when the time for maintenance arrives for any of a plurality of parts that require periodic maintenance. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-327467 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional work machines, when maintenance is performed on a consumable item, the accumulated usage time of that consumable item must be measured from the beginning, and so the stored accumulated time must be reset. However, because work machines have multiple functions and multiple setting means for setting each function, there is a problem in that it is difficult to intuitively understand how to operate the setting means for resetting usage information such as the accumulated usage time of the consumable item.

[0006] An object of the present invention is to provide a control method for a display device of a work machine that makes it possible to intuitively understand the operation method for resetting usage information for consumables of the work machine. [Means for solving the problem]

[0007] In order to solve the above problems, the control method of the display device of the work machine of the present invention is to of Displaying the function setting items on the display unit of the display device , and The above function setting items includes the consumables whose maintenance time has not yet arrived, and displays the function setting items of the consumables whose maintenance time has arrived in a manner different from that of the consumables whose maintenance time has not yet arrived. .

[0008] In the control method of the present invention, The display unit can display information about the function setting items and notification of the arrival of the maintenance time for the consumables. .

[0009] In the control method of the present invention, The home screen displayed on the display unit and capable of transitioning to a function setting screen including the function setting items is capable of displaying the information. .

[0010] In the control method of the present invention, The home screen is displayed together with the information in a visually perceptible manner to guide the user to the function setting screen. .

[0011] In the control method of the present invention, After selecting the function setting item, a reset setting screen is displayed on which it is possible to set whether or not to reset the accumulated time used for the consumable item, and then the accumulated time used for the consumable item can be reset. . [Effects of the Invention]

[0012] According to the present invention, a control method for a display device of a work machine is provided that makes it possible to intuitively understand the operation method for resetting usage information of consumables of the work machine. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a block diagram of a work machine according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view showing an example of a home screen on the display device of the work machine according to the embodiment of the present invention. [Figure 3] 3 is a plan view showing an example of a first selection screen on the display device of the work machine according to the embodiment of the present invention. FIG. [Figure 4]FIG. 4 is a plan view showing an example of a second selection screen on the display device of the work machine according to the embodiment of the present invention. [Figure 5] FIG. 10 is a plan view showing an example of a third selection screen on the display device of the work machine according to the embodiment of the present invention. [Figure 6] FIG. 4 is a plan view showing an example of a reset setting screen, which is a function setting screen on the display device of the work machine according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] A work machine 1 and a display device 10 according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing a work machine 1 equipped with a display device 10 according to this embodiment.

[0015] The work machine 1 is a construction machine (e.g., a hydraulic excavator) used, for example, at construction sites, demolition sites, mines, etc., and performs civil engineering work, building construction work, etc. in response to operation by a worker. The work machine 1 includes, for example, an engine 2, an engine control unit 3, a hydraulic mechanism 4, and a display device 10.

[0016] The engine 2 transmits power to each part of the work machine 1. The engine 2 uses engine oil 2a for lubrication to ensure smooth operation of each part of the engine 2. The engine 2 is also provided with an engine oil filter 2b that removes impurities from the engine oil 2a. The engine oil 2a and engine oil filter 2b are consumable items whose lifespan shortens depending on the use (cumulative time used) of the work machine 1 (engine 2), and are maintained by being replaced.

[0017] The engine control unit 3 controls the operation of the engine 2 and is configured by an engine ECU etc. The engine control unit 3 also measures the rotation speed of the engine 2 and outputs it to the display device 10.

[0018] The hydraulic mechanism 4 performs work such as civil engineering work and construction work, and has hydraulic members (not shown) such as a boom, arm, and bucket, and a hydraulic actuator (not shown) that drives the hydraulic members. The hydraulic mechanism 4 has a hydraulic pump (not shown) that pressurizes hydraulic oil 4a using power generated by the engine 2, and drives the hydraulic actuator using the pressurized hydraulic oil 4a as a power transmission medium.

[0019] The hydraulic mechanism 4 is also configured to return hydraulic oil 4a from the hydraulic actuator to a hydraulic tank (not shown) via a return flow path (not shown), and the return flow path is provided with a hydraulic oil return filter 4b that removes impurities from the hydraulic oil 4a. The hydraulic mechanism 4 is configured to supply hydraulic oil 4a from the hydraulic tank to the hydraulic pump via a supply flow path (not shown), and the supply flow path is provided with a hydraulic oil supply filter 4c that removes impurities from the hydraulic oil 4a. The hydraulic oil 4a, hydraulic oil return filter 4b, and hydraulic oil supply filter 4c are consumables whose lifespans become shorter depending on the use (cumulative time of use) of the work machine 1 (hydraulic mechanism 4), and are maintained by being replaced.

[0020] The hydraulic mechanism 4 detects the driving of each part of the hydraulic mechanism 4, for example, the driving of the hydraulic actuator and the driving of the return flow path and the supply flow path, and outputs, as the detection result, for example, an on or off driving signal to the display device 10.

[0021] The display device 10 displays various information about the work machine 1. The display device 10 includes, for example, a display control unit 11, a storage unit 12, a display unit 13, and an operation unit 14.

[0022] The display control unit 11 is composed of a monitor ECU and the like, and controls the operation of each unit of the display device 10. The memory unit 12 is a storage means composed of storage media such as ROM and RAM, and stores various information for the display device 10. For example, the memory unit 12 stores in advance the lifespans (lifetime usage) of various consumables of the work machine 1. The memory unit 12 also sequentially stores usage information such as the accumulated time that each consumable has been used by the work machine 1.

[0023] The display unit 13 is composed of, for example, a liquid crystal monitor or the like, and displays a screen according to the control by the display control unit 11. The operation unit 14 is composed of, for example, a plurality of function keys, and accepts operations corresponding to the screen displayed on the display control unit 11.

[0024] The display control unit 11 controls the display unit 13 to display various screens on the display unit 13. The display control unit 11 switches between various screens to be displayed on the display unit 13 in response to operation of the operation unit 14. The display control unit 11 also displays a menu bar 13a having multiple selection items and an alarm display field 13b that notifies of abnormalities that have occurred in the work machine 1 on various screens of the display unit 13. The operation unit 14 has multiple function keys provided corresponding to the multiple selection items on the menu bar 13a, and the display control unit 11 accepts selection of each selection item in response to operation of each function key.

[0025] For example, when the work machine 1 (engine 2) is operated, the display control unit 11 causes the display unit 13 to display a home screen 20 as a basic screen (see FIG. 2). The display control unit 11 also causes the display unit 13 to display a function setting screen 60 having a plurality of function setting means for setting a plurality of functions of the work machine 1 (see FIG. 6). For example, the display control unit 11 causes the display unit 13 to display a reset setting screen 60a as the function setting screen 60, the reset setting screen 60a having, as the function setting means, a reset setting means for resetting usage information such as the accumulated time of each consumable of the work machine 1. The home screen 20 has a selection means for selecting one of the plurality of function setting means. Furthermore, the display control unit 11 causes the display unit 13 to display selection screens 30, 40, and 50 having selection means for selecting one of the plurality of function setting means, on the way from the home screen 20 to the function setting screen 60 (see FIGS. 3, 4, and 5). In other words, the display control unit 11 and the display unit 13 function as function setting means and selection means.

[0026] The display control unit 11 also manages the multiple functions of the work machine 1 in a tree-like hierarchical structure. For example, the display control unit 11 classifies the multiple functions of the work machine 1 into first tier groups for each rough type (hereinafter referred to as the first tier type). The display control unit 11 also classifies each first tier group into second tier groups for each type more specific than the first tier type (hereinafter referred to as the second tier type). The display control unit 11 further classifies each second tier group into third tier groups for each type more specific than the second tier type (hereinafter referred to as the third tier type). The display control unit 11 then classifies each third tier group into each type more specific than the third tier type (hereinafter referred to as the function type), thereby classifying the multiple functions. The display control unit 11 accepts selection of the first tier group, second tier group, and third tier group via selection means provided on the home screen 20, selection screens 30, 40, 50, and function setting screen 60. In other words, the display control unit 11 configures a selection means by hierarchizing the procedure leading to the function setting means.

[0027] The display control unit 11 displays a fuel gauge 21, a hydraulic oil temperature gauge 22, a radiator water temperature gauge 23, a work status display (not shown), various warning lamps (not shown), etc. on the home screen 20. Furthermore, the display control unit 11 displays each of the above-mentioned first layer groups selectably on the menu bar 13a on the home screen 20 as a selection means for reaching one of a plurality of function setting means.

[0028] For example, the display control unit 11 classifies the multiple functions of the work machine 1 into first layer groups of "various settings," "crane," "mode," "camera," and "PTO," and displays the names of the first layer groups, which are options, in the selection items of the menu bar 13a. In this way, the display control unit 11 accepts the selection of a first layer group in response to the operation of the operation unit 14. Note that the selection of the first layer group "various settings" displayed in the menu bar 13a of the home screen 20 is a selection means that leads to a reset setting means.

[0029] When a first tier group is selected on the menu bar 13a of the home screen 20, the display control unit 11 causes the display unit 13 to display a first selection screen 30 related to the selected first tier group. At this time, the display control unit 11 displays, on the first selection screen 30, each second tier group classified from the first tier group in a selectable manner as a selection means for reaching one of a plurality of function setting means.

[0030] For example, the display control unit 11 classifies the first layer group "Various Settings" into second layer groups, "Monitor Settings," "Vehicle Body Settings," "PTO Settings," "Monitoring Settings," "Operation Management," "Maintenance," "Error History," and "Filter Regeneration," and displays the names of each second layer group, which are options, on the first selection screen 30, as shown in FIG. 3 . The display control unit 11 may also display an identification mark, such as an icon, for identifying each second layer group on the first selection screen 30. The menu bar 13a of the first selection screen 30 displays an option for returning to the home screen 20 and an option for moving a cursor to select and confirm one of the second layer groups. The cursor indicating the selection candidate for the second layer group is displayed differently from the other options, and is indicated by hatching in FIG. 3 . In this way, the display control unit 11 accepts the selection of the second layer group in response to the operation of the operation unit 14. The selection of the second layer group "Maintenance" displayed on the first selection screen 30 is a selection means leading to the reset setting means.

[0031] When a second tier group is selected on the first selection screen 30, the display control unit 11 causes the display unit 13 to display a second selection screen 40 related to the selected second tier group. At this time, the display control unit 11 displays, on the second selection screen 40, each of the third tier groups classified from the second tier group in a selectable manner as a selection means for reaching one of a plurality of function setting means.

[0032] For example, the display control unit 11 classifies the second tier group "Maintenance" into three tier groups, "Cumulative Usage Time" and "Maintenance History," and displays the names of the respective third tier groups as options on the second selection screen 40, as shown in FIG. 4. The display control unit 11 may also display an identification mark, such as an icon, for identifying each third tier group on the second selection screen 40. The menu bar 13a of the second selection screen 40 displays an option for returning to the first selection screen 30 and an option for moving a cursor to select and confirm one of the third tier groups. The cursor indicating the selection candidate for the third tier group is displayed differently from the other options, and is indicated by hatching in FIG. 4. In this way, the display control unit 11 accepts the selection of the third tier group in response to the operation of the operation unit 14. The selection of the third tier group "Cumulative Usage Time" displayed on the second selection screen 40 is a selection means leading to the reset setting means.

[0033] When a third tier group is selected on the second selection screen 40, the display control unit 11 causes the display unit 13 to display a third selection screen 50 relating to the selected third tier group. At this time, the display control unit 11 displays, on the third selection screen 50, selectable items for setting each function classified from the third tier group (hereinafter referred to as function setting items) as selection means for reaching one of a plurality of function setting means.

[0034] For example, the display control unit 11 classifies the third tier group of "cumulative usage time" into function setting items of "hydraulic oil," "hydraulic oil return filter," "hydraulic oil supply filter," "engine oil," and "engine oil filter," and displays the names of each function setting item as options on the third selection screen 50, as shown in FIG. 5. Here, the function setting items of "hydraulic oil," "hydraulic oil return filter," "hydraulic oil supply filter," "engine oil," and "engine oil filter" are function items for resetting the cumulative usage time of each consumable item of the work machine 1. The third selection screen 50 for the third tier group of "cumulative usage time" lists the lifetime usage time and cumulative usage time of each consumable item of the work machine 1, namely, "hydraulic oil," "hydraulic oil return filter," "hydraulic oil supply filter," "engine oil," and "engine oil filter." The display control unit 11 may also display an identification notation, such as an icon, for identifying each consumable item on the third selection screen 50. The menu bar 13a on the third selection screen 50 displays an option for returning to the second selection screen 40 and an option for moving a cursor to select and confirm one of the function setting items. The cursor indicating the function setting item selection candidate is displayed differently from the other options, and is shown by hatching in Fig. 5. In this way, the display control unit 11 accepts the selection of the function setting item in response to the operation of the operation unit 14. Note that the selection of each function setting item displayed on the third selection screen 50 is a selection means leading to the reset setting means. In other words, the reset means is provided for each type of consumable at the lowest layer of the selection means.

[0035] When a function setting item is selected on the third selection screen 50, the display control unit 11 causes the display unit 13 to display a function setting screen 60 having a function setting means for setting the function of the selected function setting item. For example, when a function setting item of the third hierarchical group "accumulated usage time" is selected on the third selection screen 50, the display control unit 11 causes the display unit 13 to display a reset setting screen 60a as the function setting screen 60, on which the user can set whether to reset the accumulated usage time of the consumable corresponding to the selected function setting item, as shown in FIG. 6. Note that the menu bar 13a of the reset setting screen 60a displays a selection item for selecting whether to reset the accumulated time. When resetting the accumulated time is selected on the reset setting screen 60a, the display control unit 11 resets the accumulated time stored in the memory unit 12 for the corresponding consumable, i.e., sets it to 0.

[0036] Furthermore, as described above, the display control unit 11 acquires usage information such as the accumulated time used for the consumables of the engine 2 (for example, the engine oil 2a and the engine oil filter 2b) and the accumulated time used for the consumables of the hydraulic mechanism 4 (for example, the hydraulic oil 4a, the hydraulic oil return filter 4b, and the hydraulic oil supply filter 4c), and sequentially stores the information in the memory unit 12. The display control unit 11 updates the accumulated time of the consumables stored in the memory unit 12 according to the use of the engine 2 and the hydraulic mechanism 4.

[0037] For example, the display control unit 11 receives data on the rotation speed of the engine 2 from the engine control unit 3, and when the rotation speed exceeds a predetermined rotation speed threshold, starts measuring the operating time of the engine 2, and when the rotation speed falls below the rotation speed threshold, ends measuring the operating time of the engine 2. The display control unit 11 adds the measured operating time of the engine 2 to the cumulative usage time of consumables of the engine 2 (for example, engine oil 2a, engine oil filter 2b), and stores the result in the memory unit 12.

[0038] The display control unit 11 also receives a drive signal from the hydraulic mechanism 4 and measures the operating time of the hydraulic mechanism 4 while the drive signal is on. The display control unit 11 adds the measured operating time of the hydraulic mechanism 4 to the cumulative usage time of consumables of the hydraulic mechanism 4 (for example, the hydraulic oil 4a, the hydraulic oil return filter 4b, and the hydraulic oil supply filter 4c), and stores the result in the memory unit 12.

[0039] Furthermore, the display control unit 11 detects the arrival of the time for maintenance of the consumables when the accumulated time reaches the life usage time or the difference between the accumulated time and the life usage time becomes equal to or less than a predetermined life threshold, based on the accumulated time of use of the consumables of the engine 2 or the hydraulic mechanism 4. When the display control unit 11 detects the arrival of the time for maintenance of the consumables, it functions as a notification means for notifying the arrival of the maintenance time. For example, the display control unit 11 as a notification means displays a maintenance notification such as the text "Maintenance" or an image urging other maintenance in the warning notification field 13b displayed on the display unit 13. (Information regarding notification of the arrival of the maintenance period for consumables) The display control unit 11 displays an identification notation such as the name or icon of the consumable item whose maintenance time has come in the warning notation field 13b. As information to notify you when it is time to perform maintenance on consumables It may be displayed.

[0040] Incidentally, when the display device 10 notifies the worker on the home screen 20 that the maintenance period for the consumables has arrived as described above, a worker who sees the notification will stop the engine 2 and perform maintenance such as replacing the consumables of the work machine 1. Thereafter, when the worker restarts the engine 2 and the display device 10 displays the home screen 20, if the accumulated time stored in the memory unit 12 has not been reset, the display control unit 11 will detect the arrival of the maintenance period for the consumables based on the relationship between the accumulated time and the life usage time, and will notify the worker of the arrival of the maintenance period for the consumables on the home screen 20. Therefore, in order to prompt the worker to reset the accumulated time, when notifying the worker of the arrival of the maintenance period, the display device 10 provides a visually recognizable display that allows the worker to visually recognize the procedure leading to the reset setting means for the consumables that are due for maintenance, using the selection means on the home screen 20, first selection screen 30, second selection screen 40, and third selection screen 50 described above.

[0041] At this time, the display control unit 11 displays, as a visually perceptible display, the notation related to the selection means leading to the reset setting means on the home screen 20, the first selection screen 30, the second selection screen 40, and the third selection screen 50 in a different color from other notations. For example, the display control unit 11 displays the names and identification notations of the selection items of the first layer group "various settings" displayed on the menu bar 13a of the home screen 20 in a different color from other selection items. (Different aspects) In addition, the display control unit 11 displays the names and identification symbols of the selection items of the second layer group "Maintenance" displayed on the first selection screen 30 in a color different from that of the other selection items. (Different aspects) The names and identification symbols of the selection items of the third layer group "cumulative usage time" displayed on the second selection screen 40 are displayed in a different color from the other selection items. (Different aspects) Furthermore, the display control unit 11 displays the name and identification marking of the function setting item corresponding to the consumable item for which the arrival of the maintenance time has been detected among the function setting items displayed on the third selection screen 50 in a color different from that of the other function setting items. (Different aspects) Display as.

[0042] When the cumulative times of all consumables for which the arrival of the maintenance time has been detected is reset by the reset setting means of the reset setting screen 60a, the display control unit 11 cancels the notification of the arrival of the maintenance time and cancels the maintenance notation in the warning notation field 13b. The display control unit 11 also cancels the visual recognition display by the selection means on the home screen 20, the first selection screen 30, the second selection screen 40, and the third selection screen 50. Note that if the arrival of the maintenance time has been detected for two or more consumables, the display control unit 11 may cancel the visual recognition display on the third selection screen 50 for each consumable for which the cumulative time has been reset.

[0043] As described above, according to this embodiment, the display device 10 of the work machine 1 is equipped with a memory unit 12 (storage means) that stores the cumulative time used for consumables of the work machine 1 that require maintenance depending on usage. The display control unit 11 and display unit 13 provided in the display device 10 also function as notification means that notifies the user of the arrival of maintenance time for the consumables based on the cumulative time. Furthermore, the display control unit 11 and display unit 13 function as multiple function setting means for setting multiple functions of the work machine 1, respectively, and selection means for selecting one of the multiple function setting means. The multiple function setting means have a reset setting means that resets the cumulative time. The selection means provides a visually recognizable display that allows the user to visually recognize the procedure leading to the reset setting means for the consumables that are due for maintenance.

[0044] As a result, display device 10 allows a worker performing maintenance on a consumable item that is due for maintenance to visually recognize the procedure for resetting the accumulated time for which the consumable item has been used. This makes it possible to make the worker aware that the accumulated time for the consumable item needs to be reset, and further makes it possible for the worker to intuitively understand how to reset the accumulated time. Furthermore, by resetting the accumulated time after maintenance on the consumable item, the accumulated time for the consumable item after maintenance can be measured more accurately, and therefore more appropriate use of consumable items allows for more appropriate use of the work machine 1.

[0045] Furthermore, the selection means of the display device 10 is configured in a hierarchical structure in which the procedure leading to the reset setting means is hierarchically structured. As a result, the display device 10 can reach the reset setting means by selecting stepwise in a hierarchical structure in which a plurality of function setting means are selected. Therefore, the reset setting means can be selected from a large number of function setting means without hesitation, and the operating method for resetting the accumulated time of the consumables can be intuitively and easily understood by the operator.

[0046] Furthermore, the selection means of the display device 10 is configured to provide a visually recognizable display for each layer. As a result, in the hierarchical structure for selecting one of a plurality of function setting means, the display device 10 provides a visually recognizable display successively at each layer up to the reset setting means, making it possible for the operator to intuitively understand the operation method for resetting the accumulated time of the consumables.

[0047] Furthermore, the reset setting means of the display device 10 is provided for each type of consumable at the lowest level of the selection means. This makes it easy for the worker to intuitively identify, from among the multiple consumables of the work machine 1, consumables that are due for maintenance and require the reset of their accumulated time.

[0048] Furthermore, the selection means of display device 10 includes an identification marking for identifying the options, and is configured to display the identification marking for the option leading to the reset setting means in a color different from that of the other options as a visually recognizable display. As a result, display device 10 displays the options of the selection means leading to the reset setting means in a way that distinguishes them from the other options, thereby making it easier for the worker to intuitively understand how to operate to reset the accumulated time of the consumables.

[0049] Furthermore, the selection means of the display device 10 is configured to cancel the visually perceptible display after the reset setting means resets the accumulated time, thereby enabling the display device 10 to make it easy for the worker to intuitively understand that the accumulated time for the consumable item for which maintenance has been performed has been reset.

[0050] Furthermore, according to this embodiment, the control method of the display device 10 of the work machine 1 includes notifying the arrival of the time for maintenance of consumables of the work machine 1 that require maintenance, displaying the consumables that require maintenance as function setting items on the display unit 13 of the display device 10, and, when a selection of a function setting item that resets the accumulated time used for the consumables stored in the work machine 1 is accepted, displaying on the display unit 13 a reset setting screen 60a that allows the user to set whether or not to reset the accumulated time.

[0051] In this control method, as shown in Fig. 6, a reset setting screen 60a is displayed superimposed on the function setting items. The reset setting screen 60a is also displayed together with a selection item for selecting whether or not to reset the accumulated time. This selection item is also displayed below the function setting items.

[0052] This control method notifies the user that the maintenance time has arrived and, after displaying the function setting items, causes the display unit 13 to display a visual recognition display that shows the procedure leading to the display of the reset setting screen 60a. This control method also has the steps of causing the display unit 13 to display a selection means for selecting one of a plurality of function setting means for setting each of a plurality of functions of the work machine 1, and causing the visual recognition display to change the display state of the selection means (for example, displaying a notation related to the selection means differently from other notations).

[0053] In the above embodiment, an example has been described in which the display control unit 11 measures the operating time of the engine 2 based on the rotation speed of the engine 2, but the present invention is not limited to this example. For example, in other embodiments, the display control unit 11 may measure the operating time of the engine 2 based on the amount of fuel consumed or other information.

[0054] Furthermore, in the above embodiment, an example has been described in which the display control unit 11 measures the operating time of the hydraulic mechanism 4 based on the detection results of the drive of each part of the hydraulic mechanism 4, but the present invention is not limited to this example. For example, in other embodiments, the display control unit 11 may measure the operating time of the hydraulic mechanism 4 based on the oil pressure of the hydraulic oil in the hydraulic actuator, the flow rate of the hydraulic oil in the return flow path or the supply flow path, or other information.

[0055] In the above embodiment, an example has been described in which the display control unit 11 measures the cumulative usage time of the hydraulic oil 4a, the hydraulic oil return filter 4b, and the hydraulic oil supply filter 4c based on the operating time of the hydraulic mechanism 4, but the present invention is not limited to this example. For example, in other embodiments, the display control unit 11 may measure the cumulative usage time of each consumable item from factors related to the consumable item, such as measuring the cumulative usage time of the hydraulic oil 4a based on the drive of the hydraulic actuator and the hydraulic oil pressure, measuring the cumulative usage time of the hydraulic oil return filter 4b based on the drive of the return flow path and the flow rate of the hydraulic oil, and measuring the cumulative usage time of the hydraulic oil supply filter 4c based on the drive of the supply flow path and the flow rate of the hydraulic oil.

[0056] In the above embodiment, an example has been described in which the display device 10 classifies the multiple functions (function setting means) of the work machine 1 into a first tier group hierarchy, a second tier group hierarchy, and a third tier group hierarchy, but the present invention is not limited to this example. For example, in other embodiments, the display device 10 may classify the multiple functions of the work machine 1 into two or fewer tiers, or into four or more tiers. Furthermore, the display device 10 may classify the multiple functions of the work machine 1 into different numbers of tiers depending on the type of function.

[0057] In the above embodiment, an example has been described in which the display device 10 displays, as a visual recognition display, a notation related to the selection means leading to the reset setting means in a color different from other notations. However, the present invention is not limited to this example. For example, in another embodiment, the display device 10 may display, as a visual recognition display, the background of the notation related to the selection means leading to the reset setting means in a color different from other notations. Furthermore, in another embodiment, the display device 10 may display, as a visual recognition display, a notation related to the selection means leading to the reset setting means by adding characters related to resetting the accumulated time to the name of the notation, thereby making it different from other notations. Alternatively, in another embodiment, the display device 10 may display, as a visual recognition display, a notation related to the selection means leading to the reset setting means by flashing it, thereby making it different from other notations.

[0058] In the above embodiment, an example has been described in which the display device 10 displays the reset setting screen 60a from the home screen 20 via the first selection screen 30, the second selection screen 40, and the third selection screen 50, but the present invention is not limited to this example. For example, in another embodiment, the display device 10 may display on the home screen 20 an operation key that displays the reset setting screen 60a with a single operation when notifying the user on the home screen 20 that maintenance is due.

[0059] In the above embodiment, the operation unit 14 of the display device 10 is configured with a plurality of function keys. However, the present invention is not limited to this example. For example, in another embodiment, the operation unit 14 may be configured with a touch panel together with the display unit 13. In this case, selection is made in response to touch operation of an item displayed corresponding to the operation function (e.g., a selection item in the menu bar 13a). Alternatively, in another embodiment, the operation unit 14 may be configured with a jog dial. In this case, selection options for the item displayed corresponding to the operation function (e.g., a selection item in the menu bar 13a) are changed in response to rotation of the dial, and the selection of the selection option is confirmed in response to operation of the confirmation button on the dial. It is preferable that the selection options are highlighted differently from the other items.

[0060] In the above embodiment, an example has been described in which the display device 10 monitors the cumulative usage time of the consumables of the work machine 1 as usage information and is reset in response to maintenance, but the present invention is not limited to this example. For example, in other embodiments, the display device 10 may monitor other information, such as the amount of consumables used, as usage information of the consumables of the work machine 1 and may be reset in response to maintenance.

[0061] The present invention can be modified as appropriate within the scope of the claims and the entire specification without going against the gist or concept of the invention, and a control method for a display device of a work machine that involves such modifications is also included in the technical concept of the present invention. [Explanation of symbols]

[0062] [Appendix to the invention] The following will provide an outline of the invention extracted from the above-described embodiment. Note that the configurations and processing functions described in the following supplementary notes can be selected and combined as desired.

[0063] <Appendix 1> A method for controlling a display device of a work machine, comprising: Consumables for the work machine that require maintenance as a function setting item on the display unit of the display device, the function setting items include the consumables whose maintenance period has not yet arrived, The function setting items of the consumables whose maintenance time has come are displayed in a different manner from the function setting items of the consumables whose maintenance time has not come. , a method for controlling a display device of a work machine.

[0064] <Appendix 2> The control method according to claim 1, wherein the display unit can display information regarding notification of the arrival of maintenance time for the consumables together with the function setting items.

[0065] <Appendix 3> The home screen displayed on the display unit and capable of transitioning to a function setting screen including the function setting item can display the information. The control method described in

[0066] <Appendix 4> The home screen is displayed together with the information to visually recognize the function setting screen. The control method described in

[0067] <Appendix 5> After selecting the function setting item, a reset setting screen is displayed on which it is possible to set whether or not to reset the cumulative time used for the consumable item, and then the cumulative time used for the consumable item can be reset. The control method described in

[0068] 1. Work machinery 2 engines 4 Hydraulic mechanism 10 Display device 11 Display control unit 12 Storage section 13 Display section 14 Control section 2a engine oil 2b Engine oil filter 4a Hydraulic oil 4b Hydraulic oil return filter 4c Hydraulic oil supply filter

Claims

1. A method for controlling a display device of a work machine, comprising the steps of: displaying consumables of the work machine requiring maintenance as function setting items on a display unit of the display device; the function setting items include the consumables whose maintenance period has not yet arrived, A control method for a display device of a working machine, which displays the function setting items of the consumables whose maintenance time has arrived in a manner different from the function setting items of the consumables whose maintenance time has not arrived.

2. A control method as described in claim 1, wherein the display unit is capable of displaying, together with the function setting items, information regarding notification of the arrival of the maintenance time for the consumable.

3. A control method as described in claim 2, wherein a home screen displayed on the display unit and capable of transitioning to a function setting screen including the function setting items is capable of displaying the information.

4. A control method as described in claim 3, wherein the home screen is displayed together with the information in a visually perceptible manner to guide the user to the function setting screen.

5. A control method described in any one of claims 1 to 4, wherein after selecting the function setting item, a reset setting screen is displayed in which it is possible to set whether or not to reset the accumulated time used for the consumable, and then the accumulated time used for the consumable can be reset.

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