JP2002146848A - Display control device for movable working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control device for calling a passenger's attention and naturally turning the eyes to an indicator. SOLUTION: The display state of the indicator is visually changed according to the movement of operation means such as lever and others.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a display control device for a mobile work machine.

[0002]

2. Description of the Related Art Conventionally, in a mobile work machine, a display device which receives signals from a traveling speed sensor, an engine rotational speed sensor, a load sensor, etc., and displays data such as a traveling speed, an engine rotational speed, and a load capacity. It has.

[0003]

However, although the conventional mobile work machine has the above-mentioned indicator, it can be said that the occupant sees it while working and uses it sufficiently. Did not.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a display control device for a mobile work machine according to the present invention includes an engine, a work machine, and a cab mounted on a vehicle body for movement. Display control of a mobile work machine having an operation signal generating means for controlling operation of an engine, operation of a work machine, driving by an engine, etc., and a dashboard on which an indicator is arranged, which is made freely. In the device, a command for visually changing the display data on the display device for each change in the operation content of the operation signal generation means is stored in advance,
When an operation signal is received from the operation signal generating means and the signal changes, an instruction corresponding to the change is read from the memory, and the read instruction is input to a display corresponding to the operation signal generating means, and the operation signal generating means The display data on the display unit is changed independently of the data for each operation change to
It is distinguished visually.

[0005] In addition, the command for visually changing the display data on the display device stored in advance may be a command based on a combination of changes in the operation contents of the plurality of operation signal generating means. .

Further, display data on the display may be stored whenever an operation signal is received from the operation signal generating means and the signal changes, and the storage may be read out to the outside. .

The display data includes a running speed, an engine speed, a loaded weight of a bucket, a loaded weight of a dump truck, and the like.

[0010] According to the above configuration, when changing the content of the operation performed by the passenger, the passenger is alerted to the display by a visible change in the display data. Therefore, the user naturally turns his / her eyes to the display, thereby reducing the possibility of erroneous operation, improving the accuracy of the operation, and making it easy to confirm the operation contents, thereby reducing the fatigue of the occupant. Furthermore, if the data that changes visually is the data stored in the display control device at the same time, the occupant naturally confirms that the data is stored, and the occupant's sense of security increases.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

An embodiment of the present invention will be described with reference to FIG. An indicator 3 is provided at the center of the dashboard 2 in the cab 1 of the wheel loader. Display 3
Includes a first display 11 at the center of the upper stage, a second display 12 at the center of the middle stage, a third display 13 at the middle right, and a fourth display 14 at the lower left. The first display 11 selectively displays either the traveling speed or the engine speed, and the second display 1
2 indicates the material of the cargo in correspondence with one of the alphabets below the letters "MATERIAL". The third display 13 displays the loading weight of the bucket, and the fourth display 14
Indicates the loading weight of the dump truck. Below the third indicator 13, a fifth symbol for displaying a symbol simulating a bucket is displayed.
A display 15 is provided. Around the fourth display 14, a sixth display 16 for displaying a pattern imitating the bed of a dump truck is provided.
There is.

In the cab 1, an accelerator pedal 4,
A shift lever 5, a work implement operation lever 6, and a control device 10 are provided. The control device 10 includes a speed sensor 21 for detecting a traveling speed, an engine speed sensor 22 for detecting an engine speed, a loaded weight sensor 23 for detecting a loaded weight of a bucket, and an accelerator for detecting a depression amount of an accelerator pedal 4. Stepping amount sensor 24, shift lever position sensor 25 for detecting the position of shift lever 5, work implement operating lever 6
A signal from various sensors such as a work implement operation lever position sensor 26 for detecting the position of the work machine is input, and the display content of each part of the display 3 is controlled based on the signal. The details of this control are as follows.

(1) The control device 10 compares the signal from the accelerator pedal depression amount sensor 24 with a clock time stored in a built-in memory by a program incorporated in advance, and based on the comparison result, displays the display data on the first display 11. Switch. For example, when the depression amount of the accelerator pedal 4 is constant for 3 seconds or more and the elapsed time is 3 seconds or more, the traveling speed detected by the speed sensor 21 is displayed on the first display 11, and otherwise, that is, the accelerator pedal 4 is depressed. When the amount has changed, the engine speed detected by the engine speed sensor 22 is displayed. It is desirable to change the color of the displayed characters depending on the data to be displayed. (For example, the running speed is green and the engine speed is red.)
When the shift operation is performed by a program incorporated in advance, that is, when the signal from the shift lever position sensor 25 changes, the characters on the first display 11 are lit for about one second. (Increase lighting brightness during night lighting)

(2) When the control device 10 determines that a scooping operation is being performed based on signals from the accelerator depression amount sensor 24 and the work implement operation lever position sensor 26 (for example, when the accelerator pedal 4 When the work machine operating lever 6 is operated in the bucket excavation direction while the stepping force is equal to or more than a predetermined value, the characters displayed on the third display 13 and the symbol on the fifth display 15 are illuminated. (Increase the illumination brightness during nighttime illumination.) Also, if it is determined that the dumping operation is being performed (for example, when the work implement operation lever 6 is operated in the bucket ascending direction and then operated within one second in the bucket dumping direction), The characters displayed on the fourth display 14 and the symbol on the sixth display 16 are illuminated.

(3) When the control device 10 determines that the dump operation is being performed according to the procedure described in the above (2) by a program installed in advance, the bucket detected by the loading weight sensor 23 immediately before the dump operation is performed. Is loaded into the built-in memory 7 and displayed on the third display 13. Then, the load weight of the bucket input every time the dump operation is performed is integrated, the integrated value is readably stored from the outside as the load weight of the dump truck, and is displayed on the fourth display 14. More specifically, "A", "B", "C", "D", "E"
And a dial 27 having five switching positions of
Specific memory areas 7a, 7b, 7c, 7
d and 7e are provided. The control device 10 receives the switching signal from the dial 27 and receives the specific memory areas 7a, 7b, 7
Any one of c, 7d, and 7e is selected, and the loaded weight is integrated for each selected specific memory area, and this value is stored. For example, the correspondence between the switching position of the dial 27 and the specific memory area is described. 7c for "D", 7 for "D"
For d and "E", a program such as 7e is determined in advance by a program. Then, while the dial 27 is at the "A" position, the control device 10 inputs the loaded weight of the bucket to the specific memory area 7a and accumulates the value every time the dump operation is performed, while the dial 27 is at the "A" position. Is stored in the specific memory area 7 a and displayed on the fourth display 14. That is, the value displayed on the fourth display 14 is the loaded weight of the bucket stored in the specific memory area corresponding to the switching position selected by the dial 27. At the same time, the control device 10
The corresponding alphabet character in the second display 12, in this case “A”, is illuminated. During this time, the loading weight of the bucket is not input to the other specific memory areas, and the values stored as the loading weight of the dump truck before this are respectively held. The values stored in each specific memory area are individually readable.

According to the configuration of the present invention described above by way of example in the embodiment, the passenger is alerted by the visual change of the display state when the operation content is changed, and the operation content that he / she is performing is changed. Will naturally be checked on the display.
Therefore, the possibility of erroneous operation is reduced, the accuracy of the operation is improved, and the operation contents can be easily checked, thereby reducing the fatigue of the occupant. Furthermore, if the data that changes visually is the data stored in the display control device at the same time, the occupant naturally confirms that the data is stored, and the occupant's sense of security increases.

[Brief description of the drawings]

FIG. 1 is a diagram of a display control device according to an embodiment of the present invention.

[Description of Signs] 3 ... Display, 4 ... Accelerator pedal, 5 ... Shift lever, 6
... Work implement operating lever, 13... Third display, 14... Fourth display, 15... 5th display, 16.

Claims (6)

[Claims] 1. An operation signal generating means for mounting an engine, a working machine, and a driver's cab on a vehicle body so as to be movable and controlling operations such as operation of the engine, operation of the working machine, and running by driving the engine. And, in a mobile work machine having a dashboard in which an indicator that displays engine operation data, work machine operation data, an engine drive running data display, etc. in a cab, engine operation data or running data, A display control device for a mobile work machine, wherein operation data of the work machine is displayed on the same screen. 2. An operation signal generating means for mounting an engine, a working machine, and a driver's cab on a vehicle body so as to be movable, and for controlling operations such as operation of the engine, operation of the working machine, and running by driving the engine. In a mobile work machine having an operation data of an engine, operation data of a work machine, a dashboard on which an indicator for displaying driving data of the engine drive and the like are arranged in a cab, an operation signal generating means (4, 5, A command for visually changing the display data on the display (3) is stored in advance for each change in the operation content of (6), and an operation signal is received from the operation signal generation means (4, 5, 6) and the signal is received. When it changes, the command corresponding to the change is read from the memory, and the read command is input to the display (3) corresponding to the operation signal generating means (4, 5, 6), and the display
(3) A display control device for a mobile work machine, wherein the display data described above is visually changed independently of the data. 3. A command for visually changing display data on a display (13, 14, 15, 16) stored in advance is a change command of each of a plurality of operation signal generating means (4, 6). The display control device for a mobile work machine according to claim 1, wherein the display control device is based on a combination. 4. The display data on the display (14) is stored each time an operation signal is received from the operation signal generating means (4, 6) and the signal changes, and the storage is externally stored. 2. The apparatus according to claim 1, wherein the information is readable.
Or a display control device for a mobile work machine according to 2. 5. The display data which visually changes is a traveling speed or an engine speed.
4. The display control device for a mobile work machine according to 2 or 3. 6. The display control device for a mobile work machine according to claim 1, wherein the display data which visually changes is a loaded weight of a bucket or a loaded weight of a dump truck. .