JP5277444B2 - Work machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display both of a state display mark and a state change display mark on the same display screen with a limited area, without reducing the size of the individual mark, even when the number of the state display marks and that of the state change display marks are increased. <P>SOLUTION: An engine water temperature display mark 21 is displayed in a display location 20 on the display screen 2; a hydraulic fluid temperature display mark 31 is displayed in a display location 30; and a fuel amount display mark 41 is displayed in a display location 40. In the case where the state of a working machine changes at this stage, the display states of the state display marks 21 and 41 displayed in the display locations 20 and 40 are maintained on the occurrence of an abnormality such as a reduction in battery voltage and an abnormality such as a decrease in oil pressure of an engine. However, the hydraulic fluid temperature display mark 31 displayed in the specified display location 30 is put into an undisplayed state. A battery caution mark 33 indicating the abnormality as the reduction of the battery voltage, and an engine oil pressure caution mark 34 indicating the abnormality as an increase of the oil pressure of the engine are displayed in the specified display location 30. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a display device that is provided in a cab or the like of a work machine and displays a state and a change of the work machine.

  A display device is provided in the cab of the construction machine to display the state of the construction machine such as the cooling water temperature and an abnormality such as a decrease in engine oil pressure. A conventional display device will be described with reference to FIG.

  On the display screen 81 of the display device 80, a state display mark 82 (bar graph) for displaying the state of the construction machine and a state change display mark 83 for displaying a change occurring in the work machine are displayed. For example, a state display mark 82 indicating the temperature of the engine cooling water and the remaining amount of fuel as a bar graph, and a caution mark 83 indicating that the battery voltage, engine hydraulic pressure, hydraulic oil temperature, cooling water temperature, etc. have become abnormal values The same display screen 81 is displayed separately.

  The operator can recognize the current fuel remaining value and the temperature of the cooling water from the display content of the state display mark 82 displayed on the display screen 81 of the display device 80. Also, the type of abnormality currently occurring can be recognized from the lighting state of the caution mark 83.

  Recent construction machines have many functions, and accordingly, the number of state display marks 82 and caution marks 83 to be displayed on the same display screen 81 of the display device 80 is increasing.

  In the conventional display device 80, the status display mark 82 and the caution mark 83 are displayed at independent display locations on the display screen 81.

  Therefore, when the number of the status display marks 82 and the caution marks 83 is increased, the size of the individual marks of the status display marks 82 and the caution marks 83 is reduced in order to display all within the limited area of the display screen 81. There must be. When the size of each of the status display mark 82 and the caution mark 83 is reduced, there arises a problem that the visibility of each mark is lowered.

  Conversely, if the size of each mark of the status display mark 82 and the caution mark 83 is kept the same as the conventional size and the increase in the number of marks is dealt with, the area of the display screen 81 must be made larger than before. This leads to an increase in the size of the display device 80.

  However, since the space in the cab of the construction machine is generally limited, it is not preferable to increase the size of the display device 80.

  As described above, the conventional display device 80 has a problem that the visibility of the mark is unavoidable in order to cope with the increase in the number of marks without increasing the size.

  On the other hand, in Japanese Patent Laid-Open No. 9-78636, when there is no abnormality in the construction machine, information necessary for operating the construction machine, such as the remaining amount of fuel, cooling water temperature, engine oil pressure, etc. is displayed as a status display mark. An invention is described in which, when an abnormality occurs in a construction machine that is displayed on a screen, the state display mark currently displayed is hidden and only the caution mark is displayed on the display screen.

  In this way, only one of the status display mark and the caution mark is selectively displayed on the display screen, and both the status display mark 82 and the caution mark 83 are displayed on the same screen as in the display device 80 of FIG. There is no need to display. Therefore, even if the number of marks increases, the marks can be arranged within a limited display area without reducing the size of each mark, and visibility can be prevented from being lowered.

JP-A-9-78636

  However, according to the invention described in Japanese Patent Application Laid-Open No. 9-78636, when an abnormality occurs in the construction machine, the state display mark is hidden. For this reason, there is a problem that the operation of the construction machine becomes difficult for the following reasons.

  The operator can grasp the abnormality that will occur in the construction machine at an early stage by looking at the status display mark.

  According to the invention of the above publication, when an abnormality occurs in the construction machine, the state display mark is hidden and only the caution mark is displayed on the display screen. Alternatively, it is possible to alternately repeat a state in which the state display mark is not displayed on the display screen and only the caution mark is displayed and a state in which the caution mark is not displayed and only the state display mark is displayed.

  In any case, however, the operator cannot see the status display mark. Therefore, if the state display mark is set to the non-display state, an abnormality that may occur in the remaining fuel amount, the coolant temperature, the engine oil pressure, or the like cannot be grasped at an early stage. Furthermore, even if an abnormality such as the remaining amount of fuel, cooling water temperature, engine oil pressure or the like occurs while the caution mark is displayed, the abnormality cannot be grasped.

  In addition, some caution marks display a serious anomaly that needs to be promptly dealt with by stopping the driving operation when lit, and even if it is lit, it is not always necessary to take immediate action There are caution marks that display minor abnormalities. For example, a rise in hydraulic oil temperature is a mild abnormality.

  Even when a caution mark indicating a slight abnormality is lit on the display screen, the operator often continues the operation of the construction machine and continues the operation of the traveling machine and the work machine of the construction machine.

  According to the invention described in the above publication, when a slight abnormality occurs in the construction machine, the display screen is switched from the display of the state display mark to the display of the caution mark, as in the case of a serious abnormality. Therefore, the operator is forced to continue the driving operation while only the caution mark is displayed on the display screen and the state display mark is not displayed. Some of the state display marks display information important for a driving operation for displaying the traveling state of the traveling device and the working state of the working device. For example, a status display mark that displays the speed setting (high speed (Hi), medium speed (Mi), low speed (Lo)) of the hydraulic motor, and the currently selected work mode (heavy excavation, excavation, adjustment, fine operation) This corresponds to the status display mark for displaying.

  When the state display mark for displaying the speed setting of the hydraulic motor is not displayed, the operator must operate the traveling operation lever while estimating the speed setting. For example, if the operator mistakenly assumes that the speed setting of the hydraulic motor is actually “high speed” and the operator has made a large operation of the travel control lever, the crawler May rotate at high speed.

  In addition, when the state display mark for displaying the work mode is not displayed, the operator must operate the operating lever for the work implement while estimating the currently selected work mode. For example, if the currently selected work mode is actually “heavy excavation” and a large flow rate can be supplied to the hydraulic cylinder for work equipment, the operator erroneously estimates that the work mode is “fine operation”. When the machine operating lever is largely operated, the work machine (boom, arm, bucket) may be largely operated at high speed against the intention of the operator.

  The present invention has been made in view of such a situation, and even if the number of state display marks and state change display marks is increased, both are displayed on the same display screen with a limited area without reducing the size of each mark. It is possible to display the display device without causing an increase in the size of the display device and a decrease in the visibility of the display mark, and without causing trouble in the operation of the work machine such as a construction machine. It is a problem to be solved.

  Further, there are cases where numerical values and characters are displayed on the display screen of the construction machine for work at the construction site, and the operator performs lever operation and pedal operation while looking at these numerical values and characters. For example, when a material or the like is lifted by an arm crane having a hook attached to a bucket portion of a hydraulic excavator, a status display mark indicating a work radius, a stroke, a rated load, and an actual load is displayed on the display screen.

  However, a plurality of status display marks are displayed on the display screen, and on the display screen of a limited area, the numerical values and characters themselves are small and the visibility is poor. Therefore, the operator has to stare at these numerical values and letters, and there has been a problem that the operator cannot concentrate on the operation of a work machine such as a construction machine.

  The present invention has been made in view of such a situation, and improves the visibility of a specific state display mark indicated by numerical values or letters so as not to hinder the operation of a work machine such as a construction machine. This is the second problem to be solved.

  In the display device 80 of FIG. 8, for example, when a plurality of caution marks 831,... 83n are already lit, even if another caution mark is lit, the operator lights another caution mark 83n + 1. You may not notice that. In such a case, the operator does not grasp the exact state of the construction machine.

  For this reason, even if the caution mark 83n + 1 indicates that the construction machine must be stopped immediately, the operator may continue the work and may damage the construction machine.

  Even if the operator mistakenly performs a switch operation and changes to an undesired hydraulic motor speed setting, work mode, or the like, the operator may not notice that the operator has performed the wrong operation. In such a case, the operator does not grasp the accurate speed setting or work mode of the hydraulic motor.

  For this reason, for example, when the operating speed of the hydraulic motor is actually "high speed" but the operator has assumed that the speed has been changed to "low speed" and the control lever for driving is operated greatly, the crawler track is at high speed against the operator's intention. There is a risk of rotating. Also, for example, if the currently selected work mode is actually “heavy excavation” and a large flow rate can be supplied to the work machine hydraulic cylinder, it is assumed that the operator has changed to “fine operation”. When the lever is operated largely, the work implement (boom, arm, bucket) may operate greatly at high speed against the operator's intention.

  The present invention has been made in view of such a situation, and it is possible to call the operator's attention when the display contents of the state display mark are changed and displayed and when the state change display mark is displayed. Is the third problem to be solved.

The first invention is
A status display mark indicating the state of the work machine is displayed on the display screen, and a state change display mark indicating a change in the state of the work machine is changed from the non-display state to the display state when a change occurs in the state of the work machine. In the display device of the work machine that displays on the display screen,
When there is no change in the state of the work machine, a status display mark indicating at least each of the engine water temperature and the fuel amount is displayed on the display screen.
When a change occurs in the state of the work machine, a specific state display mark indicating a state other than the engine water temperature and the fuel amount displayed at a specific display position among the display positions on the display screen is not displayed. And the state change display mark is displayed at the specific display location.

The second invention is
A status display mark indicating the state of the work machine is displayed on the display screen, and the state change display mark indicating a change in the state of the work machine is changed from the display state to the non-display state when a change occurs in the state of the work machine. In the display device of the work machine that displays on the display screen,
When there is no change in the state of the work machine, the state change display mark is displayed at a specific display location among the display locations on the display screen, and at least the engine is displayed at a display location other than the specific display location. Displays status indication marks indicating the water temperature and fuel amount status,
When a change occurs in the state of the work machine, the state change display mark displayed at the specific display location is hidden and a specific status display mark is displayed at the specific display location. It is characterized by that.

The third invention is the first invention or the second invention,
The specific status display mark displayed at the specific display location is a status display mark having the lowest priority for display among the status display marks displayed at each display location on the display screen. And

4th invention is 1st invention or 2nd invention,
The working machine is provided with a traveling device and a working device,
A status display mark indicating a traveling state of the traveling device of the work machine and a state display indicating a working state of the working device of the working machine at display portions other than the specific display portion among the display portions on the display screen. Either or both of the marks are displayed.

The fifth invention is the first invention or the second invention,
A specific state change display mark is associated with the specific state display mark,
When a change corresponding to the specific state change display mark occurs while the state change display mark is displayed at the specific display location, the specific display location is displayed together with the currently displayed state change display mark. The state change display mark is displayed.

The sixth invention
In a display device of a work machine that displays a plurality of marks on a display screen,
When a predetermined signal is input, the specific status display mark indicating a state other than the engine water temperature and the fuel amount displayed on the display screen is hidden and the specific status display mark is displayed. A predetermined mark corresponding to the predetermined signal is displayed at a location.

  The first invention will be described with reference to FIG.

  A display screen 2 when there is no change in the state of the work machine is shown in FIG.

  When there is no change in the state of the work machine, an engine water temperature display mark 21 indicating the engine water temperature is displayed at the display location 20 of the display screen 2, and a hydraulic oil temperature display mark 31 indicating the hydraulic oil temperature is displayed at the display location 30. Then, a fuel amount display mark 41 indicating the fuel amount is displayed at the display location 40. An operation time display mark 51 indicating the operation time is displayed at the display location 50, a work mode display mark 61 indicating the currently selected operation mode is displayed at the display location 60, and the current speed setting is indicated at the display location 70. A traveling speed display mark 71 is displayed.

  Here, when a change occurs in the state of the work machine, for example, when an abnormality in which the voltage of the battery decreases and an abnormality in which the hydraulic pressure of the engine decreases, the display screen 2 is changed from the state shown in FIG. It is switched to the state shown in 1 (b).

  As shown in FIG. 1B, the state display marks 21, 41, 51, 61, 71 displayed in the display locations 20, 40, 50, 60, 70 maintain their display states. However, the hydraulic oil temperature display mark 31 displayed at the specific display location 30 is not displayed. The specific display location 30 displays a battery caution mark 33 indicating an abnormality such as a decrease in battery voltage, and an engine hydraulic caution mark 34 indicating an abnormality such as an increase in engine oil pressure.

  Therefore, the operator can acquire information necessary for the driving operation from the display of each of the state display marks 21, 41, 51, 61, 71 while recognizing the abnormality currently occurring from the lighting display of the caution marks 33, 34. . Moreover, since the caution marks 33 and 34 are displayed instead of the specific status display mark 31 not being displayed at the specific display location 30 in the display screen 2, even if the number of the status display marks and the caution marks is increased, the display is performed. Both the status display mark and the caution mark can be displayed in the limited space of the screen 2 without reducing the size of each mark.

  As described above, according to the first invention, when there is no change in the state of the work machine, the state display marks 21, 31, 41, 51, 61, 71 are displayed on the display screen 2, and the caution marks 33, 34 are displayed. Is displayed and caution marks 33 and 34 are displayed instead of the specific display location 30 that displayed the specific status display mark 31 when a change occurs in the state of the work machine, for example, when an abnormality occurs. Therefore, even if the number of status display marks and status change display marks increases, the status display marks and status change display marks can be displayed on the same display screen 2 with a limited area without reducing the size of each mark. Both can be displayed simultaneously. For this reason, the enlargement of the display apparatus 1 and the fall of the visibility of a mark are not caused. In addition, even if the state changes, the state display marks 21, 41, 51, 61, 71 are reliably displayed, so that there is no trouble in operation with a work machine such as a construction machine.

  The second invention will be described with reference to FIGS.

  When the work machine is turned on, a pilot display mark 35 indicating that the engine is being preheated as shown in FIG. 7 is displayed at the display location 30 of the display screen 2. Here, when the preheating is completed and the preheating function is stopped, the pilot display mark 35 at the display location 30 is not displayed. When the other state change display marks are also hidden, the display screen 2 is switched to the state shown in FIG. 1A, and the hydraulic oil temperature display mark 31 is displayed at the display location 30.

  In this way, the specific status display mark 31 and the pilot display mark 35 are switched and displayed at the specific display location 30 in the display screen 2. Therefore, even if the number of status display marks and pilot display marks increases, both the status display marks and pilot display marks can be displayed in the limited space of the display screen 2 without reducing the size of each mark. It becomes possible. Therefore, the same effect as the first invention can be obtained.

  According to the third invention, the specific display location 30 includes the status display mark 31 (hydraulic oil temperature) having the lowest priority for display among the status display marks 21 to 71 displayed in the display locations 20 to 70. When the display mark 31) is displayed and the state changes, the state display mark 31 having the lowest priority displayed in the specific display portion 30 is not displayed. Therefore, when the state changes, the other high-priority state display marks 21, 41, 51, 61, 71 remain displayed, and information necessary for driving operations such as construction machinery is obtained from these displays. The driving operation can be continued.

  According to the fourth aspect of the present invention, the display locations 60 and 70 excluding the specific display location 30 out of the display locations 20 to 70 on the display screen 2 have the work state (work mode) of the work machine of the work machine such as a construction machine. ) Or state display marks 61, 71 (work mode display mark 61, travel speed display mark 71) indicating the travel state (speed setting) of the travel device is displayed. Therefore, when an abnormality occurs, only the specific status display mark 31 (hydraulic oil temperature display mark 31) displayed at the specific display location 30 is not displayed, and these status display marks 61 and 71 (work mode) are displayed. The display mark 61 and the traveling speed display mark 71) maintain the display state. Therefore, even when a minor abnormality occurs, information necessary for the driving operation can be acquired from the display of the status display marks 61 and 71 on the display screen 2, and the driving operation can be continued without causing any trouble.

  The fifth invention will be described with reference to FIG.

  According to the fifth aspect of the invention, the specific state display mark 31 (hydraulic oil temperature display mark 31) is associated with the specific state change display mark 32 (hydraulic oil temperature caution mark 32). When the state change display mark is displayed on the display screen, for example, when an abnormality occurs, the specific state display mark 31 (hydraulic oil temperature display mark 31) and the specific state change display mark 32 (displayed at the specific display location 30) are displayed. The hydraulic oil temperature caution mark 32) is not displayed, and state change display marks 33 and 34 are displayed instead. When a change corresponding to the specific state change display mark 32 (hydraulic oil temperature caution mark 32) occurs while the state change display marks 33 and 34 are displayed at the specific display location 30, the specific display is performed. A specific state change display mark 32 (hydraulic oil temperature caution mark 32) is displayed at the location 30 together with the state change display marks 33 and 34 currently displayed.

  According to the fifth aspect, even if the specific state change display mark 32 (hydraulic oil temperature caution mark 32) is in the non-display state at the specific display location 30, a corresponding change (hydraulic oil temperature rise) occurs. Then, the specific state change display mark 32 (hydraulic oil temperature caution mark 32) indicating this change is displayed again in the specific display location 30. Therefore, the change that has occurred can be reliably recognized from the display screen 2.

  The sixth invention will be described with reference to FIG.

  When a predetermined signal, for example, an abnormal signal detected by a sensor, is input to the display device 1, a specific mark (hydraulic oil temperature display mark) 31 among a plurality of marks displayed on the display screen 2 is not displayed. Then, a predetermined mark corresponding to a predetermined signal, for example, a caution mark 33 is displayed at the display location 30. The predetermined signal is not limited to the abnormal signal, and may be an operation signal generated by operating the switches 3 to 15.

  According to the sixth aspect, the same effect as in the first aspect can be obtained.

FIG. 1A is a diagram illustrating an appearance of a display device when no abnormality occurs in the hydraulic excavator, and FIG. 1B is a diagram illustrating an appearance of the display device when abnormality occurs in the hydraulic excavator. FIG. 2 is a diagram showing a state in which the display location of the caution mark moves. FIG. 3 is a diagram showing the appearance of the display device when an abnormality such as battery voltage abnormality and engine oil pressure increase occurs in the hydraulic excavator and abnormality such as hydraulic oil temperature increase occurs. FIG. 4 is a diagram showing a display screen in which only the hydraulic oil temperature display mark is not displayed and the caution mark is lit. FIG. 5A is a diagram showing an outline of a display device having a display screen for displaying a status display mark and a display screen for displaying four caution marks. FIG. 5B is a fifth abnormality in the hydraulic excavator. It is a figure which shows the display screen when it generate | occur | produces. FIG. 6A is a diagram showing a display screen on which a status display mark and four caution marks can be displayed at the same time, and FIG. 6B is a diagram showing a display screen when a fifth abnormality occurs in the hydraulic excavator. is there. FIG. 7 is a diagram showing a display screen on which a caution mark and a pilot display mark are displayed. FIG. 8 is a view showing the appearance of a conventional display device. FIG. 9A is a diagram showing a display screen before the switch pressing operation, and FIG. 9B is a diagram showing the display screen after the switch pressing operation. FIG. 10A is a diagram showing a display screen before a predetermined abnormality occurs, and FIG. 10B is a diagram showing a display screen after a predetermined abnormality occurs. FIG. 11A is a diagram showing a display screen before a predetermined abnormality occurs, and FIG. 11B is a diagram showing a display screen after a predetermined abnormality occurs. FIG. 12A is a diagram showing a display screen before the switch pushing operation, FIG. 12B is a diagram showing a display screen immediately after the switch pushing operation, and FIG. It is a figure which shows the display screen after predetermined time progress since pushing operation. FIG. 13A is a diagram showing a display screen before the switch pushing operation, FIG. 13B is a diagram showing the display screen immediately after the switch pushing operation, and FIG. 13C is a diagram showing the switch screen. It is a figure which shows the display screen after predetermined time progress since pushing operation. FIG. 14A is a diagram showing a display screen before a predetermined abnormality occurs, FIG. 14B is a diagram showing a display screen immediately after a predetermined abnormality occurs, and FIG. It is a figure which shows the display screen after predetermined time progress since a predetermined | prescribed abnormality generate | occur | produced.

  Hereinafter, in the first embodiment, a display device for a work machine according to the present invention will be described with reference to the drawings using a monitor panel used in a hydraulic excavator according to an embodiment.

  In addition, the state change display mark displayed on the display screen in the present embodiment is a caution mark displayed when an abnormality occurs as a preferred example.

  The hydraulic excavator includes a traveling device including a traveling operation lever, a traveling hydraulic motor, and a crawler belt. That is, when the travel operation lever is operated, the travel hydraulic motor is driven in accordance with the operation of the travel operation lever, and the crawler belt connected to the travel hydraulic motor is rotated in accordance with the drive of the travel hydraulic motor. The hydraulic excavator is provided with a working device including a working machine operating lever, a working machine hydraulic cylinder, a working machine (boom, arm, bucket) and the like. In other words, when the work implement operating lever is operated, the work implement hydraulic cylinder is driven according to the operation of the work implement control lever, and the boom, arm, and bucket connected to the work implement hydraulic cylinder drive the work implement hydraulic cylinder. Operates according to.

  1A and 1B show the appearance of the display device 1 of the embodiment. The display device 1 is provided with a display screen 2 and switches 3 to 15. That is, the display device 1 has a display function based on the display screen 2 and an input operation function for inputting operation contents by pushing the switches 3 to 15.

  Each state of the coolant temperature of the hydraulic excavator engine, the temperature of the hydraulic oil, the amount of fuel, and the operating time is detected by each sensor. A detection signal is input to the display device 1 via a controller (not shown), and the current state of the hydraulic excavator is displayed on the display screen 2 of the display device 1 based on the detection signal of each sensor.

  Further, by operating the switches 3 to 15 provided on the display device 1, a control signal corresponding to the operation content is output to a controller (not shown) that controls the traveling device and the working device of the hydraulic excavator, so that the working mode, the traveling speed, etc. The working state and the running state are controlled. By appropriately operating the switches 3 to 15, the engine speed and the capacity of the hydraulic pump are controlled, and the flow rate of the pressure oil supplied to the working machine hydraulic cylinder is controlled. For this reason, the relationship between the operation amount of the operating lever for the work implement and the operation amount of the work implement (boom, arm, bucket), that is, the work mode is “heavy excavation”, “excavation”, “adjustment”, You can choose either. Further, by appropriately operating the switches 3 to 15, the capacity of the hydraulic pump and the capacity of the traveling hydraulic motor are controlled. Therefore, the traveling speed can be selected from “high speed (Hi)”, “medium speed (Mi)”, and “low speed (Lo)”. The display screen 2 displays the currently selected work mode and the currently selected speed setting (traveling speed) as will be described later.

  The display screen 2 is constituted by a liquid crystal display screen, for example.

  The display screen 2 displays state display marks 21, 31, 41, 51, 61, 71 indicating the state of the hydraulic excavator, and caution marks 22, 32, 42, 33, 34 indicating abnormality occurring in the hydraulic excavator. The

  That is, the display screen 2 is divided into display locations 20, 30, 40, 50, 60, and 70.

  An engine coolant temperature display mark 21 and an engine coolant temperature caution mark 22 are associated with the display location 20, and a fuel amount display mark 41 and a fuel amount caution mark 42 are associated with the display location 40. 50 is associated with an operation time display mark 51. A work mode display mark 61 is associated with the display location 60, and a traveling speed display mark 71 is associated with the display location 70.

  On the other hand, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are associated with the specific display location 30, and for example, the battery caution mark 33 and the engine hydraulic caution mark 34 are associated with each other. .

  The engine water temperature display mark 21 has a gauge for instructing the coolant temperature of the engine, and the inclination angle of the gauge changes according to the detected water temperature value of the corresponding sensor to indicate the current water temperature value. When the temperature detection value of the engine cooling water rises and reaches an abnormal value, the engine water temperature caution mark 22 is lit red, for example.

  Similarly, the hydraulic oil temperature display mark 31 has a gauge that indicates the hydraulic oil temperature of hydraulic oil such as a hydraulic cylinder, and the inclination angle of the gauge changes according to the detected hydraulic oil temperature value of the corresponding sensor, Indicates the hydraulic oil temperature value. When the temperature detection value of the hydraulic oil rises and reaches an abnormal value, the hydraulic oil temperature caution mark 32 is lit yellow, for example.

  Similarly, the fuel amount display mark 41 has a gauge that indicates the amount of fuel in the fuel tank. The inclination angle of the gauge changes according to the detected fuel amount of the corresponding sensor, and the current fuel amount (remaining amount) ) When the fuel amount detection value falls below a certain value, the fuel amount caution mark 42 lights up in red, for example.

  The operating time display mark 51 displays the operating time of the engine as a numerical value.

  The work mode display mark 61 displays the currently selected work mode as a pictograph, and the display mode changes according to the selected work mode.

  Similarly, the traveling speed display mark 71 displays the currently selected traveling speed stage (speed setting of the traveling hydraulic motor) with a pictogram, and the display mode changes according to the selected traveling speed stage. .

  The battery caution mark 33 indicates an abnormality in the battery voltage. When the detected battery voltage value of the corresponding sensor increases or decreases to reach an abnormal value, the battery caution mark 33 is lit in red, for example. Similarly, the engine hydraulic caution mark 34 indicates an abnormality of the engine. When the engine hydraulic pressure value of the corresponding sensor decreases and reaches an abnormal value, the engine hydraulic caution mark 34 is lit in red, for example.

  The information displayed by the engine water temperature display mark 21, the fuel amount display mark 41, the operating time display mark 51, the work mode display mark 61, and the traveling speed display mark 71 is information necessary for operating the hydraulic excavator. It is necessary to always display on the display screen 2. The work mode and travel speed information displayed by the work mode display mark 61 and the travel speed display mark 71 are particularly important for driving operation.

  On the other hand, the contents displayed by the hydraulic oil temperature display mark 31 include other state display marks, that is, the engine water temperature display mark 21, the fuel amount display mark 41, the operation time display mark 51, the work mode display mark 61, and the traveling speed display. Compared with the mark 71, the display has the lowest priority. Even if the temperature of the hydraulic oil temperature reaches an abnormal value, there is no particular problem in continuing the operation of the work machine by continuing the operation of the hydraulic excavator.

  Therefore, in this embodiment, when an abnormality occurs in the hydraulic excavator, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 having the lowest priority are hidden, and a caution mark 33, 34 is lit and displayed. Hereinafter, the operation of the display device 1 of FIG. 1 will be described.

  When no abnormality has occurred in the hydraulic excavator, an engine water temperature display mark 21 indicating the engine water temperature and an engine water temperature caution mark 22 are displayed at the display location 20 of the display screen 2, and the operation indicating the hydraulic oil temperature is displayed at the display location 30. An oil temperature display mark 31 and a hydraulic oil temperature display mark 32 are displayed, and a fuel amount display mark 41 indicating a fuel amount and a fuel amount caution mark 42 are displayed at a display location 40. An operation time display mark 51 indicating the operation time is displayed at the display location 50, a work mode display mark 61 indicating the currently selected operation mode is displayed at the display location 60, and the current speed setting is indicated at the display location 70. A traveling speed display mark 71 is displayed. When no abnormality has occurred, the engine water temperature caution mark 22, the hydraulic oil temperature display mark 32, and the fuel amount display mark 42 are not lit.

  Here, when an abnormality occurs in the hydraulic excavator, for example, when an abnormality in which the voltage of the battery decreases and an abnormality in which the hydraulic pressure of the engine decreases, the display screen 2 changes from the state shown in FIG. ).

  As shown in FIG. 1B, the status display marks 21, 41, 51, 61, 71 and the caution marks 22, 42 displayed in the display locations 20, 40, 50, 60, 70 indicate the display status. maintain. However, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 displayed at the specific display location 30 are not displayed. The specific display location 30 is lit and displayed with a battery caution mark 33 indicating an abnormality such as a decrease in battery voltage and an engine hydraulic caution mark 34 indicating an abnormality such as a decrease in engine oil pressure. If any one of the abnormalities is detected, either the battery caution mark 33 or the engine hydraulic caution mark 34 is lit.

  Therefore, the operator can acquire information necessary for the driving operation from the display contents of the state display marks 21, 41, 51, 61, 71 while recognizing the abnormality currently occurring from the lit display of the caution marks 33, 34. The driving operation can be continued. Alternatively, the driving operation can be stopped and appropriate measures can be taken. In addition, since the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are not displayed at the specific display location 30 in the display screen 2, the caution marks 33 and 34 are displayed. Even if the number increases, both the status display mark and the caution mark can be displayed in the limited space of the display screen 2 without reducing the size of each mark.

  As described above, according to the present embodiment, when no abnormality has occurred, the status display marks 21, 31, 41, 51, 61, 71 and the caution marks 22, 32, 42 are displayed on the display screen 2. The caution marks 33 and 34 are not displayed, and when the abnormality occurs, the caution marks 33 and 34 are displayed instead of the specific display location 30 where the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are displayed. Therefore, even if the number of status display marks and caution marks increases, both the status display marks and the caution marks are displayed on the same display screen 2 having a limited area without reducing the size of each mark. Can be displayed simultaneously. For this reason, the enlargement of the display apparatus 1 and the fall of the visibility of a mark are not caused. In addition, even when an abnormality occurs, the state display marks 21, 41, 51, 61, 71 necessary for the driving operation are displayed, so that the driving operation of the hydraulic excavator is not hindered.

  In the present embodiment, the state display mark with the lowest priority for display is the hydraulic oil temperature display mark 31. However, the present invention is not limited to this, and it is also possible to make the status display mark other than the hydraulic oil temperature the lowest priority and make it non-displayed when an abnormality occurs. For example, when an abnormality occurs, the engine water temperature display mark 21 and the engine water temperature caution mark 22 may be hidden, and a battery caution mark 33 or an engine hydraulic caution mark 34 indicating an abnormality may be displayed at the display location 20.

  In the present embodiment, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are completely hidden while the abnormality is occurring in the hydraulic excavator. However, the present invention is not limited to this, and the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 may be displayed intermittently even while an abnormality occurs. For example, when an abnormality occurs, an engine water temperature display mark 21, an engine water temperature caution mark 22, a hydraulic oil temperature display mark 31, and a hydraulic oil temperature caution mark 32 may be alternately displayed on the display location 20. Further, the display location 20 is changed from the display of the engine water temperature display mark 21 and the engine water temperature caution mark 22 to the display of the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 according to the operation of the switch. You may make it switch from the display of the temperature display mark 31 and the hydraulic oil temperature caution mark 32 to the display of the engine water temperature display mark 21 and the engine water temperature caution mark 22.

  Further, even during the occurrence of an abnormality, the display of the display location 30 is changed from the lighting display of the caution marks 33 and 34 to the display of the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 according to the operation of the switch. You may make it switch. When an abnormality occurs, the display screen 1 is in the state shown in FIG. Here, when the switch for switching the screen is operated, the battery caution mark 33 and the engine hydraulic caution mark 34 that are lit and displayed at the display location 30 are not displayed. Then, a hydraulic oil temperature display mark 31 and a hydraulic oil temperature caution mark 32 are displayed at the display location 30, and the state shown in FIG. In this case, the display 30 may be switched again from the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 to the battery caution mark 33 and the engine hydraulic caution mark 34 after a predetermined time. Further, when the switch is operated or when a new abnormality occurs, the display of the display location 30 is changed from the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 to the battery caution mark 33 and the engine hydraulic caution mark 34 again. You may make it switch.

  In this embodiment, the battery caution mark 33 and the engine hydraulic caution mark 34 are fixedly displayed at a specific display location 30, but as shown in FIG. Alternatively, the places 20, 30, and 40 may be lit and displayed alternately. This will be described below with reference to FIG.

  When an abnormality occurs in the hydraulic excavator, for example, when an abnormality that the voltage of the battery decreases and an abnormality that the engine hydraulic pressure decreases, the display screen 2 is changed from the state shown in FIG. 1A to the state shown in FIG. Switch to state. The engine water temperature display mark 21 and the engine water temperature caution mark 22 displayed at the display location 20 are not displayed. A battery caution mark 33 and an engine hydraulic caution mark 34 are lit on the display location 20.

  The display screen 2 is switched from the state shown in FIG. 2A to the state shown in FIG. 2B after a predetermined time from when the battery caution mark 33 and the engine hydraulic caution mark 34 are lit on the display location 20. The hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 displayed at the display location 30 are not displayed. A battery caution mark 33 and an engine hydraulic caution mark 34 are lit on the display location 30. On the other hand, the battery caution mark 33 and the engine hydraulic caution mark 34 displayed at the display location 20 are not displayed. An engine coolant temperature display mark 21 and an engine coolant temperature caution mark 22 are displayed at the display location 20.

  The display screen 2 is switched from the state shown in FIG. 2B to the state shown in FIG. 2C after a predetermined time since the battery caution mark 33 and the engine hydraulic caution mark 34 are lit on the display location 30. The fuel amount display mark 41 and the fuel amount caution mark 42 displayed at the display location 40 are not displayed. A battery caution mark 33 and an engine hydraulic caution mark 34 are lit on the display location 40. On the other hand, the battery caution mark 33 and the engine hydraulic caution mark 34 displayed at the display location 30 are not displayed. Then, a hydraulic oil temperature display mark 31 and a hydraulic oil temperature caution mark 32 are lit on the display location 30.

  The display screen 2 is switched from the state shown in FIG. 2C to the state shown in FIG. 2A a predetermined time after the battery caution mark 33 and the engine hydraulic caution mark 34 are lit on the display location 40.

  As described above, the display locations of the caution marks 33 and 34 are sequentially moved from the display location 20 to the display location 30, from the display location 30 to the display location 40, and from the display location 40 to the display location 20 every predetermined time.

  Moreover, you may make it switch the location where the caution marks 33 and 34 are displayed according to operation of a switch. Alternatively, the place where the caution marks 33 and 34 are displayed first may be the display place 30 having the lowest priority.

  However, it is desirable that the work mode display mark 61 and the traveling speed display mark 71 are always displayed on the corresponding display locations 60 and 70 even when an abnormality occurs.

  When an abnormality occurs, as long as at least the operation mode display mark 61 and the traveling speed display mark 71 are displayed on the display screen 2, information necessary for driving operation can be acquired for the time being from these display contents. Driving operation can be continued without causing any major problems.

  Further, in the present embodiment, the hydraulic oil temperature caution mark 32 displayed at the specific display location 30 when the abnormality occurs is described as being completely hidden. However, the abnormality corresponding to the hydraulic oil temperature caution mark 32 that is not displayed is displayed. When (hydraulic oil temperature rise) occurs, the hydraulic oil temperature caution mark 32 indicating the abnormality may be lit together with the other caution marks 33 and 34 at a specific display location 30. This will be described with reference to FIG.

  As described with reference to FIG. 1B, when an abnormality such as an abnormal battery voltage or an increase in engine oil pressure occurs, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 displayed at the specific display location 30 are not displayed. Instead, the battery caution mark 33 and the engine hydraulic caution mark 34 are lit and displayed. Therefore, when the battery caution mark 33 and the engine hydraulic caution mark 34 are lit and displayed at the specific display location 30, an abnormality (hydraulic oil temperature rise) corresponding to the non-displayed hydraulic oil caution mark 32 occurs. The display screen 2 is switched as shown in FIG. That is, the hydraulic oil temperature caution mark 32 is lit on the specific display location 30 together with the currently displayed battery caution mark 33 and engine hydraulic caution mark 34.

  Thus, according to the embodiment shown in FIG. 3, even if the hydraulic oil temperature caution mark 32 is in a non-display state at the specific display location 30, if a corresponding abnormality (hydraulic oil temperature rise) occurs, The hydraulic oil temperature caution mark 32 indicating this abnormality is lit again at the specific display location 30. For this reason, it is possible to reliably recognize from the display screen 2 all abnormalities currently occurring.

  Further, when an abnormality occurs in the hydraulic excavator, only the hydraulic oil temperature display mark 31 at the display location 30 may be in a non-display state as shown in FIG. At this time, a battery caution mark 33 is lit on the display location 30 and a hydraulic oil temperature caution mark 31 is displayed.

  In the case of the embodiment shown in FIG. 4, when an abnormality such as a rise in hydraulic oil temperature occurs, the hydraulic oil temperature caution mark 31 is lit on the display location 30 together with the battery caution mark 33. For this reason, an abnormality such as a rise in hydraulic oil temperature can be grasped instantaneously.

  FIG. 5A shows a display device in which a display screen for displaying a status display mark and a caution display screen for displaying a caution mark are provided separately.

  According to the embodiment shown in FIG. 5A, when an abnormality occurs in the hydraulic excavator, for example, when an abnormality occurs in which the battery voltage decreases, the battery caution mark 33 is displayed at the display location 2'a of the caution display screen 2 '. Is displayed. Since the caution display screen 2 'is provided with display locations 2'a, 2'b, 2'c and 2'd, up to four caution marks can be lit and displayed.

  Here, it is assumed that five abnormalities occur simultaneously in the hydraulic excavator. For example, when an abnormality such as an increase in engine oil pressure occurs as the fifth abnormality in the hydraulic excavator, as shown in FIG. 5B, the hydraulic oil temperature display mark 31 and the hydraulic oil displayed at the display location 30 of the display screen 2 are displayed. The warm caution mark 32 is not displayed. An engine hydraulic caution mark 34 is lit on the display portion 30.

  FIG. 6 shows a display screen on which a status display mark and four caution marks can be displayed simultaneously.

  According to the embodiment shown in FIG. 6 (a), when an abnormality occurs in the hydraulic excavator, for example, when an abnormality occurs in which the battery voltage decreases, the battery caution mark 33 is lit on the display location 2a of the caution display screen 2. Is done. Since the caution display screen 2 is provided with display locations 2a, 2b, 2c and 2d, up to four caution marks can be lit and displayed.

  Here, it is assumed that five abnormalities occur simultaneously in the hydraulic excavator. For example, when an abnormality such as an increase in engine oil pressure occurs as a fifth abnormality in the hydraulic excavator, as shown in FIG. 6B, the hydraulic oil temperature display mark 31 and the hydraulic oil displayed at the display location 30 of the display screen 2 are displayed. The warm caution mark 32 is not displayed. An engine hydraulic caution mark 34 is lit on the display portion 30.

  In the above embodiment, the case where the state change display mark is a caution mark is described. However, the state change display mark of the present invention is not limited to the caution mark but can be applied to various marks.

  For example, as shown in FIG. 7, pilot display marks 35 and 36 indicating that the engine is being preheated and the turning function is in a locked state can be displayed on the display portion 30 in the same manner as the caution mark 34. is there.

  A pilot display mark 35 indicating that the engine is preheating is displayed when the preheating function of the engine is activated, and is not displayed when the preheating function is stopped.

  In the present embodiment, when a predetermined signal, for example, an abnormal signal detected by a sensor, is input to the display device 1, a specific mark (a hydraulic oil temperature display mark) among a plurality of marks displayed on the display screen 2. ) 31 is set in a non-display state, and a predetermined mark corresponding to a predetermined signal, for example, a caution mark 33 is displayed at the display location 30. However, the predetermined signal is not limited to the abnormal signal, and may be an operation signal generated by operating the switches 3 to 15.

When the work machine is turned on, a pilot display mark 35 indicating that the engine is being preheated as shown in FIG. 7 is displayed at the display location 30 of the display screen 2. Here, when the preheating is completed and the preheating function is stopped, the pilot display mark 35 at the display location 30 is not displayed. When the other state change display marks are also hidden, the display screen 2 is switched to the state shown in FIG. 1A, and the hydraulic oil temperature display mark 31 is displayed at the display location 30.

  The engine water temperature display mark 21, the hydraulic oil temperature display mark 31, and the fuel amount display mark 41 are of a needle type that displays the detection value by each sensor by the inclination angle of the gauge. However, it may be a bar type that displays the detection value of each sensor as the length of the bar, or a numeric type that displays numbers. Similarly, the state change display mark may use characters or the like.

  Next, a second embodiment will be described with reference to FIG.

  Hereinafter, in the second embodiment, a display device for a work machine according to the present invention will be described with reference to the drawings using a monitor panel used in an arm crane in which a hook is attached to a bucket portion of a hydraulic excavator according to an embodiment. .

FIG. 9A is a diagram showing a display screen before the switch pressing operation, and FIG. 9B is a diagram showing the display screen after the switch pressing operation.

  It should be noted that the screen configuration of the display screen 2 shown in FIGS. 1 to 7 is different from the screen configuration of the display screen 2 shown in FIGS. Among the status display marks shown in FIGS. 9A and 9B, the same symbols as those in the status display marks shown in FIGS.

  On the display screen 2, state display marks 21, 31, 41, 51, 61, 71 indicating the state of the hydraulic excavator and caution marks 22, 32, 42 indicating an abnormality occurring in the hydraulic excavator are displayed.

  That is, the display screen 2 is divided into display locations 91, 92, 93, 94, 95, 96, and 97. By the push operation of the switch 8, the display locations 91 and 93 are reduced to display locations 91S and 93S, and the display location 92 is enlarged to the display location 92L.

  The display location 91 is associated with the engine water temperature display mark 21 and the engine water temperature caution mark 22, and the display location 93 is associated with the fuel amount display mark 41 and the fuel amount caution mark 42. 94 is associated with a work mode display mark 61. An operating time display mark 51 is associated with the display location 95, a traveling speed display mark 71 is associated with the display location 96, and a pilot display mark 35, 36, 101, 102 and 103 are associated with each other. An engine water temperature display mark 21S and an engine water temperature caution mark 22 are associated with the display location 91S, and a fuel amount display mark 41S and a fuel amount caution mark 42 are associated with the display location 93S.

  On the other hand, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are associated with the specific display portion 92. Further, the rated load display mark 104 and the actual load display mark 105 are associated with the display location 92L.

  The pilot display mark 35 is displayed when the engine is preheating. The pilot display mark 36 is displayed when the turning function is locked. The pilot display mark 101 is displayed when the wiper is operated. The pilot display mark 102 is displayed when a decel function that suppresses noise by operating the engine speed is activated. The pilot display mark 103 is displayed when the power-up function for increasing the driving force by increasing the engine speed is being operated.

  The rated load display mark 104 displays a numerical value of a load permitted when a material is lifted by placing a wire on a hook attached to a bucket portion of an arm crane. The actual load mark 105 displays the actual load when a material or the like is lifted as a numerical value.

  Next, the operation of the display device 1 according to the second embodiment will be described.

  When the display screen 2 is in the state shown in FIG. 9A, the operator pushes the switch for displaying the rated load display mark 98 and the actual load display mark 99, for example, the switch 8 of the display device 1 shown in FIG. To do. Then, the display screen 2 is switched from the state shown in FIG. 9A to the state shown in FIG.

  As shown in FIG. 9B, the display marks 51, 61, 71 displayed at the display locations 94, 95, 96 maintain the state. In the present embodiment, the display marks 35, 36, 101, and 102 displayed at the display location 71 also maintain the state.

  The display locations 91 and 93 are reduced, and the engine water temperature display mark 21 and the fuel amount display mark 41 are reduced and displayed.

  The hydraulic oil temperature display mark 31 and the hydraulic oil temperature display mark 32 displayed at the display location 92 until immediately before the pressing operation of the switch 8 are not displayed. As the display locations 91 and 93 are reduced, the display location 92 is enlarged in the horizontal direction of the drawing. In this display portion 92, a rated load display mark 98 and an actual load display mark 99 corresponding to the size are displayed.

  As described above, according to the second embodiment, the load rating display mark 98 is displayed while displaying on the display screen 2 the state display marks necessary for the operation of the construction machine, such as the engine water temperature display mark 21 and the fuel amount display mark 41. A state display mark indicating a numerical value or the like such as the actual load display mark 99 can be enlarged and displayed. Accordingly, the visibility of a specific status display mark indicated by a numerical value or a character is improved, so that the operator can recognize it without staring at the numerical value or the character of the status display mark. Thus, the operator can concentrate on the operation of the work machine such as a construction machine.

  In addition, you may make it display on the display location 92 which expanded the status display mark which shows a work radius and a stroke. Further, not only numerical values and characters but also state display marks corresponding to work may be displayed on the enlarged display portion 92.

  Further, when the rated load display mark 98 and the actual load display mark 99 are displayed on the display screen 2, the load factor may be displayed. For example, the load factor display mark is displayed at the display location 51 together with the display of the rated load display mark 98 and the actual load display mark 99.

  In addition, among the display marks displayed on the display screen 2, it is also possible to hide the display marks that do not need to be displayed and to enlarge other display marks. For example, the display marks 35, 36, and 101 to 103 may be hidden, and the display marks 21, 31, and 41 may be enlarged and displayed.

  Further, the display screen 2 can be changed from the state shown in FIG. 9B to the state shown in FIG. When the display screen 2 is in the state shown in FIG. 9B, the operator pushes the switch that hides the rated load display mark 98 and the actual load display mark 99. Then, the display screen 2 is switched from the state shown in FIG. 9B to the state shown in FIG. The engine water temperature display mark 21 and the fuel amount display mark 41 are displayed in an enlarged manner, and the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 are displayed at the display location 92.

  By enlarging and displaying the small engine water temperature display mark 21 and the fuel amount display mark 41, the visibility of these marks can be improved.

  Next, a third embodiment will be described with reference to FIGS.

  FIG. 10A is a diagram showing a display screen before a predetermined abnormality occurs, and FIG. 10B is a diagram showing a display screen after a predetermined abnormality occurs.

  When the display screen 2 is in the state shown in FIG. 10A, when an abnormality such as a battery voltage drop occurs, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 displayed at the display location 92 are reduced. Displayed. Further, a battery caution mark 33 is displayed at a location where the hydraulic oil temperature display mark 31 is reduced in the display location 92.

  FIG. 11A is a diagram showing a display screen before a predetermined abnormality occurs, and FIG. 11B is a diagram showing a display screen after a predetermined abnormality occurs.

  When the display screen 2 is in the state shown in FIG. 11A, if an abnormality such as a drop in battery voltage occurs, the engine water temperature display mark 21 and the engine water temperature caution mark 22 displayed at the display location 91 are reduced and displayed. Is done. Further, the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32 displayed at the display location 92 are displayed in a reduced size. Further, the fuel amount display mark 41 and the fuel amount caution mark 42 displayed at the display location 93 are displayed in a reduced size.

  As described above, according to the third embodiment, it is possible to display another mark, for example, the caution mark 33, without setting the display mark 31 displayed on the display screen 2 to the non-display state. By displaying many marks on a single screen in this way, the operator can obtain a lot of information without switching the screen.

  Further, by reducing the plurality of display marks 21, 31, 41, more marks can be displayed. Further, the mark can be displayed with a larger size.

  Next, a fourth embodiment will be described with reference to FIGS.

  Hereinafter, in the fourth embodiment, a display device for a work machine according to the present invention will be described with reference to the drawings using a monitor panel used in a hydraulic excavator according to an embodiment.

  FIG. 12A is a diagram showing a display screen before the switch pushing operation, FIG. 12B is a diagram showing a display screen immediately after the switch pushing operation, and FIG. It is a figure which shows the display screen after predetermined time progress since pushing operation.

  FIG. 13A is a diagram showing a display screen before the switch pushing operation, FIG. 13B is a diagram showing the display screen immediately after the switch pushing operation, and FIG. 13C is a diagram showing the switch screen. It is a figure which shows the display screen after predetermined time progress since pushing operation.

  FIG. 14A is a diagram showing a display screen before a predetermined abnormality occurs, FIG. 14B is a diagram showing a display screen immediately after a predetermined abnormality occurs, and FIG. It is a figure which shows the display screen after predetermined time progress since a predetermined | prescribed abnormality generate | occur | produced.

  In the fourth embodiment, the specific display location 92 is associated with the hydraulic oil temperature display mark 31 and the hydraulic oil temperature caution mark 32, and is expanded as shown in FIG. 12B. 71L, an enlarged pilot display mark 102L as shown in FIG. 13B, an enlarged caution mark 34L as shown in FIG. 14B, and the like are associated with each other.

  Next, the operation of the display device 1 when the operator changes the speed setting of the hydraulic motor by a switch operation will be described with reference to FIG.

  When the speed setting of the hydraulic motor is “high speed” (Hi), the operator pushes the switch for changing the speed setting of the hydraulic motor, for example, the switch 5 of the display device 1 shown in FIG. It is assumed that the switch is made to “low speed” (Lo). Then, the display screen 2 is switched from the state shown in FIG. 12A to the state shown in FIG.

  As shown in FIG. 12B, the display marks 21, 41, 51, 61 displayed at the display locations 91, 93, 94, 95 maintain their state. In FIG. 12A, the pilot display marks 35, 36, 101, 102, and 103 are not displayed at the display location 97, but when any one of them is displayed, the state is maintained.

  A traveling speed display mark 71L is displayed on the display portion 92 for a predetermined time, for example, 2 seconds so as to cover the hydraulic oil temperature display mark 31 displayed until immediately before the switch 5 is pushed. Further, the traveling speed display mark 71 at the display location 96 is displayed as “Lo”.

  The display screen 2 is switched from the state shown in FIG. 12B to the state shown in FIG. 12C after a predetermined time has elapsed since the pilot display mark 71L was displayed at the display location 92, for example, after 2 seconds.

  As shown in FIG. 12C, the display marks 21, 41, 51, 61, 71 displayed in the display locations 91, 93, 94, 95, 96 maintain the state. In FIG. 12B, the pilot display marks 35, 36, 101, 102, and 103 are not displayed at the display location 97, but when any one of them is displayed, the state is maintained.

  In the display portion 92, the traveling speed display mark 71L that covers the hydraulic oil temperature display mark 31 is hidden, and the hydraulic oil temperature display mark 31 is displayed.

  Next, the operation of the display device 1 when the operator operates the decel function by a switch operation will be described with reference to FIG.

  When the decel function of the construction machine is not activated, the operator pushes the switch that activates the decel function. Then, the display screen 2 is switched from the state shown in FIG. 13A to the state shown in FIG.

  As shown in FIG. 13B, the display marks 21, 41, 51, 61, 71 displayed in the display locations 91, 93, 94, 95, 96 maintain their state.

  In the display portion 92, a pilot display mark 102L is displayed for a predetermined time, for example, 2 seconds so as to cover the hydraulic oil temperature display mark 31 displayed until immediately before the switch is pressed. Further, a pilot display mark 102 is displayed at a predetermined location of the display location 97.

  The display screen 2 is switched from the state shown in FIG. 13B to the state shown in FIG. 13C after a predetermined time has elapsed since the pilot display mark 102L was displayed at the display location 92, for example, after 2 seconds.

  As shown in FIG. 13C, the display marks 21, 41, 51, 61, 71, and 102 displayed in the display locations 91, 93, 94, 95, 96, and 97 maintain the state.

  At the display location 92, the pilot display mark 102L that covers the hydraulic oil temperature display mark 31 is hidden, and the hydraulic oil temperature display mark 31 is displayed.

  Next, the operation of the display device 1 when the engine oil pressure decreases and becomes an abnormal value will be described with reference to FIG.

  For example, it is assumed that the construction machine is operating although there is an abnormality that the battery voltage is low. The display screen 2 in this case is shown in FIG. At this time, it is assumed that an abnormality occurs that the engine hydraulic pressure is newly reduced, and this is detected by the sensor. Then, the display screen 2 is switched from the state shown in FIG. 14A to the state shown in FIG.

  As shown in FIG. 14B, the display marks 21, 41, 51, 61, 71 displayed in the display locations 91, 93, 94, 95, 96 maintain their state. In FIG. 14A, the pilot display marks 35, 36, 101, 102, and 103 are not displayed at the display location 97, but when any one of them is displayed, the state is maintained.

  In the display portion 92, the engine oil pressure caution mark 34L is displayed for a predetermined time, for example, 2 seconds, so as to cover the battery caution mark 33 that has been displayed until immediately before the sensor detects an abnormality in the engine oil pressure.

  The display screen 2 is switched from the state shown in FIG. 14B to the state shown in FIG. 14C after a predetermined time has elapsed since the engine hydraulic caution mark 34L was displayed at the display location 92, for example, after 2 seconds.

  As shown in FIG. 14C, the display marks 21, 41, 51, 61, 71 displayed in the display locations 91, 93, 94, 95, 96 maintain the state. In FIG. 14B, the pilot display marks 35, 36, 101, 102, and 103 are not displayed at the display location 97, but when any one of them is displayed, the state is maintained.

  In the display portion 92, the engine hydraulic caution mark 34L is not displayed, and the battery caution mark 33 and the engine hydraulic caution mark 34 are displayed.

  As described above, according to the fourth embodiment, when the contents of the status display marks 61 and 71 are changed, when the pilot display marks 34, 35, 101, 102, and 103 are displayed on the display screen 2, When 33 and 34 are displayed on the display screen 2, the mark to be displayed is enlarged and displayed on the display portion 92 for a predetermined time to alert the operator. For this reason, the operator can surely grasp the latest state of the construction machine.

  In addition, the above embodiment demonstrated as what is mounted in a hydraulic shovel or an arm crane. However, the display device of the present invention can be used as a display device for any work machine such as a machine tool.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Display screen 20, 30, 40, 50, 60, 70 Display location 31 Hydraulic oil temperature display mark 32 Hydraulic oil temperature caution mark 33 Battery caution mark 34 Engine hydraulic caution mark 35, 36 Pilot display mark 61 Work mode display Mark 71 Travel speed display mark

Claims (10)

A status display mark indicating the state of the work machine is displayed on the display screen, and a state change display mark indicating a change in the state of the work machine is changed from the non-display state to the display state when a change occurs in the state of the work machine. In a work machine having a display device for displaying on a display screen,
Displaying the state display mark and the state change display mark at each display location divided in the same screen of the display screen,
When there is no change in the state of the work machine, a state display mark indicating the engine water temperature state and a state display mark indicating the fuel amount state are respectively displayed on the display screen, and the engine water temperature and the fuel amount. A specific status display mark indicating a status other than the engine water temperature and the fuel amount is displayed at a specific display location different from the location where each status display mark is displayed,
When a change occurs in the state of the work machine,
On the display screen, a state display mark indicating the state of the engine water temperature and a state display mark indicating the state of the fuel amount are displayed, and the specific state display mark is changed from the display state to the non-display state. The work machine, wherein the state change display mark is displayed at the specific display portion where the specific state display mark that has been hidden is displayed. A status display mark indicating the state of the work machine is displayed on the display screen, and the state change display mark indicating a change in the state of the work machine is changed from the display state to the non-display state when a change occurs in the state of the work machine. In a work machine having a display device for displaying on a display screen,
Displaying the state display mark and the state change display mark at each display location divided in the same screen of the display screen,
When there is no change in the state of the work machine, a state display mark indicating the engine water temperature state and a state display mark indicating the fuel amount state are respectively displayed on the display screen, and the engine water temperature and the fuel amount. The state change display mark is displayed at a specific display location different from the location where each status display mark is displayed,
When a change occurs in the state of the work machine,
On the display screen, a state display mark indicating the state of the engine water temperature and a state display mark indicating the state of the fuel amount are respectively displayed, and the state change display mark displayed at the specific display portion is displayed. Is changed from a display state to a non-display state, and a specific state display mark indicating a state other than the engine water temperature and the fuel amount is displayed at the specific display portion where the state change display mark that has been hidden is displayed. A working machine characterized by that. The specific status display mark displayed at the specific display location is a status display mark having the lowest priority for display among the status display marks displayed at each display location on the display screen. The work machine according to claim 1 or 2. The working machine is provided with a traveling device and a working device,
A status display mark indicating a traveling state of the traveling device of the work machine and a state display indicating a working state of the working device of the working machine at display portions other than the specific display portion among the display portions on the display screen. The work machine according to claim 1 or 2, wherein either or both of the marks are displayed. A specific state change display mark is associated with the specific state display mark,
When a change corresponding to the specific state change display mark occurs while the state change display mark is displayed at the specific display location, the specific display location is displayed together with the currently displayed state change display mark. The work machine according to claim 1, wherein the state change display mark is displayed. When a predetermined signal is input, the specific state display mark is hidden, and a predetermined mark corresponding to the predetermined signal is displayed at the specific display portion where the specific state display mark is displayed. The work machine according to claim 1, wherein: Each display location on the display screen on which a state display mark indicating the engine water temperature state and a state display mark indicating the fuel amount state are displayed indicates whether there is no change in the state of the work machine or the state of the work machine. The work machine according to claim 1 or 2, wherein the display location is the same when a change occurs. The relative positional relationship between the state display mark indicating the engine water temperature state and the state display mark indicating the fuel amount state on the display screen changes between the case where there is no change in the state of the work machine and the state of the work machine. The work machine according to claim 1, wherein the positional relationship is the same as in the case of occurrence of a fault. The specific display location is a location between a location where a state display mark indicating the state of the engine water temperature is displayed and a status display mark indicating the state of the fuel amount between the display locations, and is approximately in the center of the display screen. The work machine according to claim 1, 2, 7, or 8, wherein the work machine is a place. A status display mark indicating the state of the work machine is displayed on the display screen, and a state change display mark indicating a change in the state of the work machine is changed from the non-display state to the display state when a change occurs in the state of the work machine. In a work machine having a display device for displaying on a display screen,
Displaying the state display mark and the state change display mark at each display location divided in the same screen of the display screen,
When there is no change in the state of the work machine, each display location on the display screen includes a state display mark indicating the engine water temperature state, a state display mark indicating the fuel amount state, and other than the engine water temperature and the fuel amount. Each with a specific status indication mark indicating the status,
When a change occurs in the state of the work machine, the status display mark displayed at one display location among the status display marks displayed at each display location on the display screen is not displayed from the display status. And switching the state display marks that are not displayed in order at predetermined time intervals, and displaying the state change display marks at the display locations where the state display marks that were not displayed are displayed. machine.

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