KR100673501B1 - Display apparatus of construction machine - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a monitor provided in a cab of a construction machine in which a water temperature meter and a fuel residual meter are fixedly displayed and an area to be displayed in another area is arbitrarily set.

The screen portion 13A of the construction machine is provided as a fixed display area in which the area B on which the water temperature meter is displayed and the area C on which the fuel residual meter is displayed are fixed, but the area A on which the oil temperature meter is displayed is arbitrarily selected as information to be displayed. It is provided as a variable display area which can be set. In addition, an area D provided above the areas A, B and C is also provided as a variable display area, which is divided into a plurality of areas according to the number of information to be displayed.

Monitor, display unit, display control unit, area, icon, compartment forming unit

Description

Display device of construction machine {DISPLAY APPARATUS OF CONSTRUCTION MACHINE}

1 is an overall configuration diagram of a construction machine.

2 is a schematic configuration diagram of an interior of a cab.

3 is a configuration diagram of a monitor.

4 is a schematic configuration diagram of a display control device.

Fig. 5 is a flowchart for explaining the flow of processing of the display control method.

Fig. 6 is a screen diagram of a first setting screen.

7 is a screen diagram of a second setting screen;

Fig. 8 is a screen diagram of a first setting screen in the first embodiment.

Fig. 9 is a screen diagram of a second setting screen in the first embodiment.

Fig. 10 is a screen diagram of a first setting screen in the first embodiment.

Fig. 11 is a screen diagram of a monitor after setting in the first embodiment.

Fig. 12 is a screen diagram of a first setting screen in the second embodiment.

Fig. 13 is a screen diagram of a second setting screen in the second embodiment.

Fig. 14 is a screen diagram of a monitor after setting in the second embodiment.

Fig. 15 is a screen diagram of a monitor after setting in the third embodiment.

<Explanation of symbols for the main parts of the drawings>

13: monitor

13A: Screen

20: display control device

A, B, C, D, E: area

D1, D2, D3, D4, E1, E2, E3: Partition

IC1 to IC7: Icon

IF1 to IF7: compartment forming portion

[Document 1] Japanese Patent Laid-Open No. 2002-121776

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device arranged in a cab of a construction machine such as a hydraulic shovel.

For example, construction machines, such as a hydraulic excavator, drive a hydraulic pump by an engine, and the pressure oil output from this hydraulic pump is supplied to the hydraulic cylinder or hydraulic motor attached to each operation part. An operator rides in this cab and is operated by an operation means such as an operation lever to carry out work such as excavation of earth and sand.

In the cab of the construction machine, various instruments are installed for the operator to check the operation status of the construction machine. As indicated by such instruments, there are, for example, a water temperature gauge of cooling water, an oil temperature gauge of working oil, a residual fuel gauge, an engine rotational gauge, and the like. In addition, it is also possible to appropriately display an hourmeter indicating the time that the construction machine is running, information on whether the gate lock lever is in the normal position, and the like.

As described above, various information about the construction machine is collectively displayed by a monitor such as a liquid crystal display. By the way, it is preferable that such a monitor is as compact as possible from the viewpoint of ensuring the field of view of an operator. Therefore, in the case of using a monitor having such a limited display area, it is not possible to display all the above-mentioned information easily so that it is necessary for the operator to appropriately select and display the necessary information in this display area. In particular, since recent construction machinery tends to be multifunctional, the information to be displayed also follows the tendency to increase, and therefore, information to be displayed within a limited display area must be appropriately selected. In this case, the machine status screen including the temperature of the cooling water (hereinafter referred to as water thermometer), the oil temperature gauge of the working oil (hereinafter referred to as oil temperature meter), and the fuel remaining meter (hereinafter referred to as fuel residual meter) is usually displayed. When other information is displayed, this screen is switched to display.

Incidentally, the above-described water thermometer, oil thermometer and fuel residual meter are displayed in analog format in which the inclination angle of the gauge changes according to the values thereof, and is displayed in a relatively large display area. Here, the display needs high for the water thermometer and the fuel residual meter, but the display needs less for the oil thermometer compared to these two types of information.

Therefore, when the area in which the oil temperature meter is displayed can be displayed with other information, a new area for displaying information is generated, and this area can be effectively used. Thus, it is conventionally known to display a caution mark when the battery voltage, engine oil pressure, operating oil temperature, etc. become an abnormal value instead of the area where the oil temperature meter is displayed (see Patent Document 1, for example).

By the way, as the various information that can be displayed on the monitor as described above, for example, there is information as instruments such as a water thermometer, oil thermometer, fuel residual meter, etc., the information of the instrument is other than the remaining amount of cooling water (hereinafter, cooling water level) The remaining amount of engine oil (hereinafter referred to as engine oil level), the remaining amount of battery (hereinafter referred to as battery level), the engine speed, and the like. In addition, image information such as a back monitor and an excavation position image, time information such as a clock, an hour meter, and usage time of an accessory, information on whether the security function is turned ON, information on an accessory type, and the like And additional information. Also, for example, the ML (Moment Limiter) function to limit baggage to prevent the fall of construction machinery normally used for excavation work, to prevent the front work machine from crashing into the cab when using offset construction machinery. Various kinds of information, such as function information such as an interference prevention function, a mail function used when communicating with a management company managing a construction machine, and a setting function for performing various settings.

As described above, since there is a variety of information about the construction machinery to be displayed on the monitor, it is necessary to select and display the information to be displayed on the monitor having a limited display area among these various information. At this time, the monitor is provided with an area for fixedly displaying information that needs to be displayed, such as a water thermometer and a fuel remaining meter, and freely selects information to be displayed in other areas according to the operation, and displays information to be displayed again. If it can be arrange | positioned according to preference, operator's visibility will become high and work efficiency will improve.

However, in the above-described invention of Patent Document 1, although other information can be displayed in the region where the oil temperature meter is displayed, only predetermined information can be displayed as this information. For example, in the invention of Patent Literature 1, only the predetermined information such as a caution mark displayed when a change occurs in the state of a construction machine can be displayed as this information.

Even though other information can be displayed instead of the oil thermometer in this manner, it is not preferable from the viewpoint of smoothness, efficiency, safety, and the like that only predetermined information can be displayed.

Accordingly, an object of the present invention is to provide a display device for a construction machine that can freely select information to be displayed in an area other than the area fixedly displayed on a monitor provided in the construction machine.

The display device of the construction machine of the present invention is provided in the cab of the construction machine, and mainly comprises a screen unit for displaying a machine state screen having information of the instruments of the construction machine, and operation of display setting of the screen displayed on the screen unit. And a display control section for performing display control of the screen section, wherein the screen section is divided into a plurality of regions so that one to a plurality of regions among the plurality of divided regions are previously displayed. A fixed display area for displaying predetermined information, wherein the other area is a variable display area in which selectable information is displayed among information input to the display control unit, and a screen to be displayed on the screen unit is created.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a hydraulic excavator as an example of a construction machine applied to the present embodiment. The construction machine of the present embodiment includes a crawler type lower traveling body 1, an upper swinging structure 2, excavating work means, and the like. It consists of the front work machine 3 which is provided roughly. In addition, an upper cab 2 is provided with a cab (cab) 4 for the operator to ride and operate the machine, and the interior of the cab 4 is driven and lowered by the lower travel body 1. Operation lever for operating the boom 3a, arm 3b, bucket 3c, etc. which constitute the front work machine 3 for turning, turning by the swinging body 2, and excavation of earth and sand. Operation means including a is provided.

Moreover, the counterweight 5 of the position of the rear part of the upper revolving structure 2 of this construction machine is equipped with the monitoring camera 10 for ensuring a rear view, and the arm 3b in the front work machine 3 is attached. The camera 11 for confirming an excavation state is attached to the vicinity of the front-end | tip of (). In addition, an upper portion of the cab 4 is provided with an antenna 12a for communicating with the outside.

Inside the cab 4, a monitor 13 is provided as shown in Fig. 2, and various information is displayed on the monitor 13, so that the operator can recognize various information. In general, a construction machine used for the purpose of an excavation work, in particular a hydraulic excavator, needs to be compact in order to ensure sufficient visibility for the excavation work. Such a monitor 13 is assumed to be attached to the filler 7, for example, as shown in FIG.

Next, the monitor 13 will be described. The monitor 13 is composed of a liquid crystal screen and the like, and as shown in Fig. 3, a screen 13A for displaying various kinds of information and a button which can be operated by a person (hereinafter, an operator) who performs operations such as an operator or a manager. It is comprised with the part 13B. Although the screen portion 13A is divided into a plurality of display areas, in the example as shown in FIG. 3, the first display area FA and the second display area SA having areas A, B, C, and D are shown. The first display area FA occupies most of the screen portion 13A, and the second display area SA is formed as a strip-shaped area below the screen portion 13A. The strip-shaped area is divided into a plurality of sections. As shown in Fig. 3, the second display area SA is divided into seven sections, and each partition divided into these sections is formed as the partition forming sections IF1 to IF7. On the other hand, the first display area FA is divided into four areas A, B, C and D, and the areas A, B and C and the area D are divided into two up and down in the first display area FA and thus the first display area. Regions other than the region D of the region FA are divided into regions A, B, and C, respectively.

These areas A, B and C are basically areas for displaying an oil thermometer, a water thermometer and a fuel residual meter, and the area D is an area capable of displaying arbitrary information. In this way, the first display area FA is divided up and down by the areas A, B and C and the area D. However, in the areas A, B and C, the oil temperature meter, the water temperature meter and the fuel residual meter are determined according to their values. Areas A, B, and C are configured to some extent so that the angle of inclination is displayed in a changing analog format so that the operator can easily see them.

Here, the areas B and C of the display areas A, B and C are provided as fixed display areas in which the water temperature meter and the fuel residual meter are fixedly displayed. Here, the fixed display area refers to an area in which information to be displayed on the machine status screen as shown in FIG. 3 cannot be set. That is, since the determined information is always displayed in the fixed display area on the machine status screen, it is not possible to freely select the information to be displayed. However, on a screen other than the machine status screen, for example, the first and second setting screens described later, other information is displayed in this fixed display area. In contrast, an oil temperature meter is basically displayed in the area A. However, the area A is provided as a variable display area in which an operator can freely select information to be displayed. Here, the information that can be displayed in the variable display area is assumed to be information that can be acquired by the display control device 20 described later. In addition, although the clock and the hour meter are normally displayed also in the area D, the area D is also provided as a variable display area in which information to be displayed can be freely selected.

Also, the area D is usually divided into two areas of the divided area D1 and the divided area D2 in order to display two pieces of information, a clock and an hour meter. If it is desired to display other information besides a clock and an hour meter in this area D, the area D is divided according to the number of information to be displayed.

The button portion 13B is a button pressed by the operator, and is configured with nine buttons F1 to F9 in this embodiment as shown in FIG. That is, the buttons F1 to F7 are arranged in a line directly below the screen portion 13A, and the buttons F8 and F9 are arranged in a line directly below the button portions F1 to F7. Among these, button F8 is a button for activating a function for initial setting, and button F9 is a button for illuminating an image installed to secure a rear view of the construction machine.

On the other hand, the buttons F1 to F7 are provided so as to correspond to the partition forming portions IF1 to IF7 directly above the buttons F1 to F7, respectively. Here, the icons for operating the screen are displayed in the partition forming units IF1 to IF7. For example, the icon IC7 called "batch setting" displayed in the partition forming unit IF7 in Fig. 3 is an icon for calling up a setting screen for selecting the information to be displayed on the screen unit 13A and determining the arrangement. to be. The operator can perform an operation based on the icon by pressing the buttons F1 to F7 immediately below the icon displayed in the partition forming units IF1 to IF7. In the present embodiment, since the second display area SA is divided into seven sections, the other seven icons IC can be displayed at the same time.

In Fig. 3, the second display area SA is divided into seven partition forming parts IF1 to IF7, and buttons F1 to F7 are provided so as to correspond directly to these partition forming parts IF1 to IF7, respectively. The second display area SA can be divided into any number of partitions. However, when the number of divided partitions is small, there are fewer kinds of icons for operation. On the other hand, when divided into many compartments, the number of icons that can be displayed increases, so that complicated operations are possible. However, the number of buttons increases depending on the number of compartments, and the operator may press a button that the operator does not intend. That is, when an operator is an operator, since the operator of a construction machine normally operates with gloves, when many buttons are installed in the small monitor 13, it is preferable to install many buttons because an adjacent button may be pressed accidentally. Not. In the present embodiment, the second display area SA is divided into seven partition forming sections IF1 to IF7 in this respect, and buttons F1 to F7 are provided so as to correspond to these partition forming sections IF1 to IF7, but the present invention is not limited thereto.

And the monitor 13 of this embodiment is provided with the display control apparatus 20 for performing display control of the screen part 13A. This display control device 20 is a control device for controlling what information is displayed on each display area of the screen portion 13A. However, since the information displayed on the screen portion 13A includes a variable display area, Information to be displayed on the variable display area is obtained from a sensor or a detector connected to the display control device 20. As shown in Fig. 4, the display control device 20 of the present embodiment includes a read only memory (ROM) 21, a central processing unit (CPU) 22, a random access memory (RAM) 23, and the like. Button input control unit 24, screen unit output control unit 25, vehicle body communication unit 26, icon display position storage unit 27, display screen creation unit 27, item setting information storage unit 28 and setting screen storage The unit 29 is connected via the bus 30. The coolant sensor 41, the hydraulic oil sensor 42, the fuel remaining amount sensor 43, the engine oil sensor 44, and the engine speed sensor 45 are connected to the bus 30, and the coolant sensor 41 is connected to the bus 30. The temperature and amount of the coolant, the hydraulic oil sensor 42 is the temperature and amount of the hydraulic oil, the fuel residual amount sensor is the fuel residual amount, the engine oil sensor 44 is the residual amount of engine oil, the engine speed sensor 45 is the engine The battery residual amount sensor 46 always transmits the number of revolutions of the battery to the display control device 20 as digital data. In addition to the sensors described above, the construction machine is provided with various sensors, detectors and the like.

The ROM 21 is a storage device for storing a program for display control of the present embodiment, the CPU 22 is a processing device for executing a program stored in the ROM 21, and the RAM 23. Is a storage device used as a work area at the time of execution of a program. The button input control unit 24 is a control unit that outputs the fact to the CPU 22 when the buttons F1 to F7 are pressed. The screen part output control part 25 is a control part for controlling the screen displayed on the screen part 13A. The body communication unit 26 is an information recording device 51 for storing a state of an engine or a hydraulic mechanism, etc. via the body network 60, an engine control device 52 for controlling the rotation speed of the engine, for example an electromagnetic valve. Communication unit for controlling the transmission and reception of information to be performed between the hydraulic control unit 53 and the display control unit 20 for performing control and the like. The display screen creation unit 27 is a creation unit for creating a layout (including display of scales, needles, numbers, characters, etc.) of the screen displayed on the screen unit 13A based on the contents set by the operator. to be. The item setting information storage section 28 is a storage section for storing information on whether or not to display each item and setting contents on which area. The setting screen storage unit 29 is a storage unit for storing first and second setting screens for making display settings.

Next, the display control of this embodiment is demonstrated using the flowchart of FIG. Initially, as shown in FIG. 3, basically, the first display area of the monitor 13A has an oil thermometer in the area A, a water temperature meter in the area B, a fuel residual meter in the area C, and a clock in the divided area D1 of the area D. The hour meter is displayed in the divided region D2. In the division forming unit IF7 of the second display area SA, an icon IC7 for setting the screen is displayed.

In the monitor 13 displayed as mentioned above, an operator presses the button F7 just under the icon IC7 initially (step S1). When the button F7 is pressed, a signal to that effect is output to the CPU 22, and the CPU 22 reads from the setting screen storage unit 29 the first setting screen as shown in FIG. By controlling (25), the first setting screen is displayed on the screen portion 13A (step S2).

In the first setting screen of Fig. 6, a screen for selecting an item to be set for display is displayed on the first display area FA. The display item is an item for which the operator is to set the display. The presence or absence of the display indicates whether or not to display for each item, and the display position indicates in which area of the screen portion 13A to display each item. Here, as shown in Fig. 6, two additional items are installed in addition to the three items of the oil thermometer, the clock, and the hour meter. That is, the area B is provided as a fixed display area for displaying the water thermometer and the area C fixedly, and the areas A and D are provided as variable display areas in which the operator can freely select the information displayed. Therefore, the items that can be set in FIG. 6 are basically an oil thermometer displayed in the area A, a clock or an hour meter displayed in the area D, and the water temperature meter and the fuel remaining meter are displayed in the fixed display area. , Is outside the target of the setting item. In addition, in the case where no setting is made in particular, a setting is shown in the area A in which an oil thermometer is displayed. That is, since basically three types of information such as a water thermometer, an oil thermometer, and a fuel residual meter need to be displayed as the instrument, the oil thermometer is set to be displayed in the area A in the initial setting. In addition, since the oil thermometer has a high level of importance in setting, the items of the area A are provided at the head of the first setting screen.

Here, the additional items include, for example, the amount of coolant detected by the coolant sensor 41, the amount of hydraulic oil detected by the hydraulic oil sensor 42, the amount of engine oil detected by the engine oil sensor 44, and the engine speed sensor. Engine speed detected by 45, battery remaining amount detected by battery remaining amount sensor 46, and the like. In addition, in addition, when the sensor which detects fuel economy, the sensor which detects the oil pressure of a brake, etc. are provided, the value which these sensors detect can also be provided as an additional item. That is, as long as information can be input to the display control apparatus 20, arbitrary things can be installed as a candidate of an additional item.

The operator then selects an item for setting on the first setting screen. Selection of this item is made by a cursor (the part of which the background is oblique in FIG. 6). Here, as shown in Fig. 6, the icon IC4 called "upper" is shown in the partition formation part IF4 of the second display area SA, the icon IC5 called "lower" in IF5, and the icon IC6 called "change" in IF6. In this IF7, the icon IC7 called "confirmed" is newly displayed. Among them, the icon IC4 called "up" moves the cursor up one place, the icon IC5 called "down" moves the cursor down one place, and the icon IC6 called "change" changes the display setting of the screen. The icon IC7 called "confirm" is for determining and returning to the screen reflecting the setting contents.

The operator moves the cursor to the position of the item to be set by pressing a button F4 or F5 immediately below the icon IC4 or IC5 (step S3), and presses the button F6 at the position of the item to set the setting. The item to be performed is determined (step S4).

When a signal indicating that the button F6 is pressed is input to the CPU 22, the CPU 22 reads the second setting screen from the setting screen storage unit 29 and controls the screen unit output control unit 25 to display the screen unit ( 13A), a 2nd setting screen is displayed (step S5). The presence or absence of the display on the second setting screen indicates whether to display an item to be set, and the display position indicates whether to display in the area A or the area D.

In this second setting screen, the operator determines the presence or absence of the display of the selected item and the area to be displayed. At this time, in the second setting screen, the icon IC2 called "left" is shown in the partition forming part IF2 of the second display area SA, the icon IC3 called "right" is shown in IF3, and the icon IC4 called "up" is shown in IF4. In IF5, an icon IC5 called "low" is displayed, an icon IC6 called "change" is shown in IF6, and an icon IC7 called "return" is newly displayed in IF7. Among these icons, icons IC2 to IC5 move the cursor left and right, up and down, icon IC6 is to confirm the setting contents on the second setting screen, and icon IC7 is to confirm the first setting contents without confirming the setting contents on the second setting screen. To return to the setting screen.

The operator moves the cursor by pressing buttons F2 to F5 directly below the icons IC2 to IC5 to set the presence or absence of the display and the display position, and confirm the setting contents by pressing the button F6 (step S6). .

At this time, when a signal indicating that the button F6 is pressed is input to the CPU 22, the CPU 22 stores in the item setting information storage unit 29 the presence or absence of display of each set item and the setting contents for the area to be displayed. do.

Thereafter, the CPU 22 reads the first setting screen from the setting screen storage unit 29 and controls the screen output control unit 26 to display the first setting screen on the screen unit 13A (step S7). ). The operator continues the operation after step S3 when setting the presence or absence of the display and setting the area to be displayed for another item (step S8). On the other hand, when the setting for other items is not made (step S8), button F7 is pressed (step S9). When this button F7 is pressed, the CPU 22 instructs the display screen creation unit 27 to create a layout of the screen displayed on the screen unit 13A. The display screen creation unit 27 creates a layout of a screen to be displayed on the screen unit 13A based on the setting contents of each item stored in the item setting information storage unit 28, and the same as the screen unit 13A. The screen output control unit 27 is controlled to display the layout. At this time, when the oil thermometer is displayed in the area D instead of the area A, the display area becomes small, so that the screen is reduced and displayed, or a screen converted to, for example, a digital format or a bar format is created. In addition, when displaying a clock, an hour meter, or the like in the area A instead of the area D, the display area is enlarged, so that the display is enlarged or a screen converted into an analog format is created.

As described above, in the present embodiment, it is also possible to display the oil temperature system in the region A in which the oil temperature system is normally displayed as it is, and to display other items instead of the oil temperature system. In addition, the items to be displayed can also be freely set for the area D other than the area A, B, or C on which instruments such as an oil thermometer, a water thermometer, or a fuel residual meter are displayed. This item is not limited to information such as a clock or an hour meter, and may be information that can obtain the display control device 20. Therefore, information about the mechanism is not only applied to the mechanism currently equipped in the construction machine but also to the newly added mechanism. Can be displayed in the area A instead of the oil thermometer.

In the present embodiment, the button F7 is used to transition from the machine status screen to the first setting screen. For example, when the button F8, which is a menu button, is pressed, the machine status screen transitions to the first setting screen. In the status screen, the second display area SA may also be allocated to the areas A, B, and C, or may be provided as a new area for displaying other information. That is, by pressing the button F7 corresponding to the icon IC7 called "batch setting" displayed on the partition forming unit D7 of the second display area SA on the machine state screen, the machine state screen is set to transition to the first setting screen. For example, if button F8, which is a menu button, is assigned to transition from the machine status screen to the first setting screen, there is no need to display an icon in the second display area SA. You can assign it to C, or display other information.

In addition, as an selectable item, an oil thermometer, a clock, an hour meter, and two additional items were added, but more items may be provided. Thus, by providing many items, the selection which an operator can display in area | region A becomes wider.

In addition, although the area B and the area C are provided as a fixed display area in which the water thermometer and the fuel residual meter are fixedly displayed, respectively, but it is not necessary to display the water thermometer or the fuel residual meter, the operator arbitrarily sets the display of the area B or the area C. It may be provided as a variable display area capable of performing the operation.

In addition, although area | region A was made into the variable display area, and area | region B and area | region C were made into the fixed display area | region, either or both of area | region A, B, or C was made into the fixed display area on which a water thermometer and a fuel residual meter are displayed, One area may be a variable display area.

In addition, although the screen portion 13A is divided into four areas of areas A, B, C, and D, the shapes of these four areas are not necessarily fixed, and may be configured to be stretchable.

Further, although buttons F1 to F7 are provided directly below the partition forming units IF1 to IF7 so that the icons IC1 to IC7 and the buttons F1 to F7 displayed in the partition forming units IF1 to IF7 correspond, the icons IC1 to IC7 and the buttons F1 to F7 As long as an operator can grasp | ask the correspondence, you may install in arbitrary positions of the monitor 13, for example, the position just above the screen part 13A, the adjacent left-right position, etc.

<First Embodiment>

Next, the first embodiment will be described. In this embodiment, it is assumed that four items can be selected: an oil thermometer, an engine rev counter, a fuel economy, and an accessory hour meter. Among these, the fuel economy is for indicating the state of fuel economy of the current construction machine, and the accessory hour meter is for indicating the use time of the accessory. In the present embodiment, in order to display the fuel economy and the accessory hour meter as described above, a mechanism for newly obtaining fuel economy and a mechanism for acquiring the attachment time of the accessory are added to the vehicle body network 60.

In addition, the area D is assumed to be divided into four areas of the divided areas D1, D2, D3, and D4. In the present embodiment, among the divided regions D1 and D2, the clock and the hour meter are fixedly displayed, and three regions of the region A, the divided regions D3 and D4 are arbitrarily selected. In the region A, the oil thermometer is set to be displayed, but the divisions D3 and D4 are set to be not displayed.

In this embodiment, the operator sets the oil thermometer to be in a non-display state, sets the engine rotation water system in the region A, sets the accessory hour meter in the divided region D3, and displays fuel economy in the divided region D4.

Initially, pressing the button F7 immediately below the icon IC7 called "arrangement setting" on the screen as shown in FIG. 3 displays the first setting screen as shown in FIG. To hide the oil thermometer, the operator presses button F4 under the icon IC4 called "up" or button F5 under the icon IC5 called "lower" to move the cursor to the item of the oil thermometer. Move the cursor and select the item by pressing the button F6 under the icon IC6 called "Change".

When button F6 is pressed, a second setting screen as shown in Fig. 9 is displayed (step S5). The operator “does not display” the display by pressing the button F2 corresponding to the icon IC2 called “left” or the button F3 corresponding to the icon IC3 called “right” to make the oil thermometer non-displayed. Move the cursor to. As a result, since the oil thermometer is in a non-display state, the oblique line, which is the background representing the cursor, may be eliminated at the display position, and the cursor cannot be moved at the display position. In this state, when the button F6 just below the icon IC6 called "change" is pressed, the information that the item of the oil thermometer is not displayed is stored in the item setting information storage unit 28.

Since the screen transitions from the second setting screen to the first setting screen, the operator performs the same operation so that the engine rotation counter is displayed in the area A, the accessory hour meter in the divided area D3, and the fuel consumption divided area. Set to display on D4. In setting each of these items, the engine speedometer is displayed in the area A, the accessory hour meter is displayed in the divided area D3, and the fuel consumption is displayed in the divided area D4. The item setting information storage unit 28 Remember).

After all the items are finished, when the button F7 immediately below the icon IC7 called "confirm" is pressed on the first setting screen, the display screen creating unit 27 returns the display of each item from the item setting information storage unit 28. The information related to this is read out to create a layout of a screen in which the engine rotational speed is displayed in the area A, the accessory hour meter is displayed in the divided area D3, and the fuel economy is displayed in the divided area D4. At this time, since the water temperature meter in the area B, the fuel remaining meter in the area C, the clock in the partition area D1, and the hour meter are fixedly displayed in the partition area D2, these fixed display areas are collectively combined. The screen output controller 25 is controlled to display the layout of the screen displayed in the first display area FS of the unit 13A, and to display it according to the layout of the screen as shown in FIG.

As described above, in the present embodiment, a water thermometer is provided in the region B, a fuel residual meter in the region C, a clock in the divided region D1, and an hour meter is fixedly displayed in the divided region D2. Since the divided area D3 and the divided area D4 are provided as variable display areas which can be arbitrarily set by the operator, the items to be displayed in these areas can be freely set. Therefore, when the engine speed is important to the operator, the engine speed can be easily checked by displaying the engine speed gauge in the area A having a certain size. In addition, by displaying the accessory hour meter and fuel economy in the area D, the use time of the accessory and the fuel efficiency of the current construction machine can be grasped.

Second Embodiment

Next, a second embodiment will be described. In this embodiment, the clock is not displayed in the divided area D1 of the area D and the hour meter is not fixedly displayed in the divided area D2, and the operator can freely select the area to be displayed for these clocks and the hour meter. In addition, when the clock displayed in the digital format in the area D is normally displayed in the area A, it is assumed that the clock is displayed in the analog format. In addition, it is assumed that the oil temperature meter, which is displayed in the analog format in which the inclination angle of the gauge changes in accordance with the value measured by the operating oil thermometer 42 in the area A, is displayed in the bar format.

In this embodiment, the operator displays a clock in the area A, an accessory hour meter in the partition area D1, an hour meter in the partition area D2, an excavation hour meter in the partition area D3, and an oil thermometer in the partition area D4. Here, the excavation hour meter refers to the time provided by the construction machine for the excavation work, and refers to measuring the time when the bucket is attached as an accessory.

In the present embodiment, in the screen as shown in Fig. 3, the operator makes a transition to the first setting screen by pressing the button F7 immediately below the icon IC7 called "distribution setting". In the first setting screen, as shown in Fig. 12, the oil thermometer is divided into the divided region D4, the clock is set into the region A, the accessories are divided into the divided region D2, the accessory hour meter is divided into the divided region D1, and the excavated hour meter is divided into the divided region D3. The setting is made to be displayed.

In order to make the above settings, the buttons F2 to F7 are operated on the first and second setting screens to set the respective items. When the setting of one item is completed, the setting content is stored in the item setting information storage unit 28. Here, in this embodiment, in order to be able to set all four regions of the divided regions D1, D2, D3, and D4 of the region D, the position of the display can be selected from five regions as shown in FIG. At this time, it may not be possible to select a region that has already been selected by another item. For example, when the clock is already displayed in the area A, the cursor may not move to the area A when setting other items on the second setting screen. In addition, although the cursor can be moved, an error message may be displayed to notify the operator when the button F6 for confirming the setting contents is pressed.

When the setting of the display for all items is finished and the operator presses the button F7 on the first setting screen to confirm, the item setting information storage unit 28 storing the setting contents of each item is read out, and the display screen creating unit (27) creates a layout of the screen to be displayed on the screen unit 13A, and controls the screen unit output control unit 25 to be displayed according to the created layout, thereby displaying the screen as shown in FIG. Mark on. At this time, the display screen creation unit 27 displays the clock in an area A having a certain size, in an analog form that is easy for the operator to check, not in a digital form, and the oil thermometer displayed in the divided area D4, which is a relatively small area, A screen is displayed, which is displayed in a bar format as shown in FIG. 14, for example, rather than an analog format in which the inclination angle of the gauge changes. At this time, the oil thermometer may be displayed in a digital format instead of a bar format. In other words, it is displayed in a format that can be displayed in the divided area D4 which is a small area.

Incidentally, in the first embodiment and the present embodiment, engine rotational speed, fuel economy, accessory hour meter, and excavation hour meter are mentioned as additional items, but the present invention is not limited thereto. For example, the time when the breaker is attached as an accessory. An breaker hour meter or the like may be provided. In addition, the remaining operable time of a construction machine may be calculated from the fuel residual meter 43 and the mechanism which detects fuel economy, and this time may be made into an additional item.

As an additional item, information about a function provided in the construction machine may be displayed. This function has a function called an ML function. Construction machinery is normally used for excavation work, but crane work can be performed by replacing the accessories with a bucket with a hook. When carrying out this crane work, it is necessary to display the rated load which is a limit of baggage and the actual load which is an actual load in order to prevent a construction machine from falling over. Such rated load and actual load information may be provided as additional items and displayed in the area A or the area D which is a variable display area.

Moreover, as a function, there exists a function called an interference prevention function. When using an offset construction machine, the operating range of the front work machine should be set so that the front work machine does not collide with the cab. It is necessary to display the information necessary for setting at this time, so it may be displayed in the area A or the area D which is a variable display area.

Moreover, the information for using the mail function for communicating with the management company which manages a construction machine, and the setting function for setting various settings may be provided as an additional item, and may be displayed in area | region A or area | region D which is a variable display area.

Third Embodiment

Next, a third embodiment will be described. In the present embodiment, the monitoring camera 10 for securing the rear view or the camera 11 for confirming the excavation state is controlled to be displayed on the screen portion 13A.

In this embodiment, the image of the camera 10 or 11 is displayed in the area A, the clock is displayed in the partition area D1, the hour meter is displayed in the partition area D2, the excavation hour meter is displayed in the partition area D3, and the oil thermometer is displayed in the partition area D4. Let's choose. When the selection of all items is finished, the operator presses the button F7 to confirm the setting on the first setting screen, and the display screen creating unit 27 reads the setting contents of each item from the item setting information storage unit 28 and The layout of the screen to be displayed on the screen portion 13A is created.

At this time, since the image of the camera 10 or 11 must be displayed in a large area, the areas A, B and C are one area E in this embodiment. At this time, since the area A has one area A, B, and C, the water temperature meter and the fuel residual meter must be displayed in the area E. However, it is preferable to hold the image area of the camera 10 or 11 as large as possible, so that the area E2 displaying the water thermometer and the area E3 displaying the fuel remaining meter are arranged in a minimum size that can be checked by the operator as shown in FIG. Display screen creation unit 27 creates a screen allocated as an image area of the camera 10 or 11 other than the areas E2 and E3 as the area E1.

In this embodiment, the water temperature meter is displayed in the region E2 and the fuel residual meter is displayed in the region E3, but the present invention is not limited thereto. The fuel residual meter may be displayed in the region E2, and the water temperature meter may be displayed in the region E3. In short, most of the area E may be controlled to be divided into an area for displaying an image from the camera 10 or 11 and an area for displaying a water thermometer and a fuel remaining meter.

According to the present invention, arbitrary information is displayed on the variable display area of the monitor screen unit provided in the driver's cab of a construction machine according to the purpose of the work, the operator's preference, and the like, thereby improving workability and ensuring smooth operation and safety.

Claims (5)

A button provided in the cab of a construction machine and having a screen portion for displaying a machine state screen mainly having information of the instruments of the construction machine, and a plurality of buttons for operating display setting of the screen displayed on the screen portion. And a display control unit for controlling display of the screen unit, The screen unit is divided into a plurality of areas, wherein one to a plurality of areas of the divided areas are fixed display areas for displaying predetermined information, and other areas are selectable information from information input to the display control unit. And a screen to be displayed on the screen unit as a variable display area where is displayed. The display device of a construction machine according to claim 1, wherein the fixed display region displays at least one of a water thermometer or a fuel residual meter which is at least the temperature of the engine cooling water, or two informations of the water thermometer and the fuel residual meter. . The display apparatus of claim 1, wherein one or more pieces of information input to the display control unit are displayed in the variable display area. 2. The display unit according to claim 1, wherein when the two fixed display areas are defined as an area B and an area C, and the two variable display areas are an area A and an area D, the area D is formed on the upper portion of the screen portion. The region A, the region B and the region C are formed in a horizontal arrangement A water temperature meter is displayed in said area B, and a fuel residual meter is displayed in said area C. The display device of a construction machine. The display device of a construction machine according to claim 4, wherein the area D is further divided into a plurality of areas, and each of the plurality of divided areas is configured as a variable display area capable of selecting information to be arbitrarily displayed.

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