JP4179441B2 - Display control device for mobile work machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display control device for a mobile work machine.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a mobile work machine has a display that receives data from a travel speed sensor, an engine rotation speed sensor, a load sensor, and the like and displays data such as a travel speed, an engine rotation speed, and a load load.
[0003]
[Problems to be solved by the invention]
However, even though the conventional mobile work machine is equipped with the above-mentioned indicator, it cannot be said that the passenger sees this during the work and makes full use of it.
[0004]
[Means for solving the problems and effects]
In order to solve the above problems, a display control device for a mobile work machine according to a first invention of the present application is configured such that an engine, a work machine, and a driver's cab are mounted on a vehicle body and are movable. Operation signal generating means for controlling operations such as operation , work machine operation, engine-driven traveling, etc., and a dashboard provided with a display for displaying engine operation data, work machine operation data, engine-driven travel data, etc. In the display control device for a mobile work machine having a cab, the engine speed data or traveling speed data and the work machine operation data are simultaneously displayed on the same screen, and the operation contents of the operation signal generating means are changed. display data on the display unit previously stores an instruction for visually changed to, when the depression amount of the accelerator pedal is changed, the serial command corresponding to the change Reading from part to display the engine speed data on the first display unit corresponding to the accelerator pedal of the display unit, when the depression amount of the accelerator pedal became constant predetermined time or more, the running speed data on the first display unit The display data of the first display is visibly changed by displaying.
[0005]
The second aspect of the invention is an operation signal for controlling the operation of the engine, the operation of the work machine, traveling by driving the engine, etc., while the engine, the work machine, and the cab are mounted on the vehicle body to be movable. In a display control device for a mobile work machine having a generating means and a dashboard in which an indicator for displaying engine operation data, work machine operation data, engine drive data, and the like is disposed in a cab The data or traveling data, the loaded weight data of the bucket that is one of the work machines, and the accumulated value data of the loaded weight are displayed on the same screen at the same time, and an indicator is displayed every time the operation content of the operation signal generating means changes. A command to visibly change the display data at is stored in advance, and it is determined that the scooping operation is being performed based on operation signals from the accelerator pedal and the work machine operation lever. In this case, a command corresponding to the change is read from the storage unit, and the loaded weight data of the bucket displayed on the third display unit corresponding to the swaging operation of the work implement operation lever in the display unit is visually changed. When it is determined that the dumping operation is being performed, the accumulated value data of the loaded weight displayed on the fourth display corresponding to the dumping operation of the work machine operation lever is visibly changed.
[0006]
Further, the display data on the fourth display stores every time it is determined that during the dump operation based on an operation signal from the operation signal generation means, may be freely read the stored data in the external .
[0008]
According to the above configuration, the passenger is alerted to the display device by a visible change in the display data when changing the operation content he / she is performing. For example, one of the engine speed data and the traveling speed data is displayed on the first display device based on a change in the depression amount of the accelerator pedal. In addition, when it is determined that the steering operation is being performed based on the operation signals from the accelerator pedal and the work machine operation lever, it is determined that the dumping operation is being performed by visually changing the loading weight data of the bucket displayed on the third display. Sometimes, the integrated value data of the loaded weight displayed on the fourth display is visibly changed. By such a visible change in the display data, the occupant of the work machine naturally confirms the operation content he / she is performing on the display. Accordingly, the user can naturally look at the display, and the possibility of erroneous operation is reduced, the accuracy of work is improved, and the confirmation of the operation content is facilitated, and the passenger's fatigue is reduced. Moreover, data that changes visually is simultaneously if the data to be stored in the display control device, will be the passenger that the data is stored to check the nature, increases comfort of the occupant.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
An embodiment of the present invention will be described with reference to FIG.
The indicator 3 is provided in the center of the dashboard 2 in the cab 1 of the wheel loader. The display 3 includes a first display 11 at the upper middle, a second display 12 at the middle middle, a third display 13 on the right middle, and a fourth display 14 on the lower left. The first indicator 11 selectively displays either the traveling speed or the engine speed, and the second indicator 12 displays the material of the load in correspondence with one of the alphabets below the “MATERIAL” characters. The third indicator 13 displays the loading weight of the bucket, and the fourth indicator 14 displays the loading weight of the dump truck. Below the third indicator 13 is a fifth indicator 15 that displays a symbol that imitates a bucket, and a sixth indicator that displays a symbol that imitates the loading platform of a dump truck around the fourth indicator 14. There is a vessel 16.
[0011]
In the driver's cab 1, an accelerator pedal 4, a transmission lever 5, a work implement operating lever 6 and a control device 10 are provided.
The control device 10 includes a speed sensor 21 that detects the traveling speed, an engine speed sensor 22 that detects the engine speed, a loaded weight sensor 23 that detects the loaded weight of the bucket, and an accelerator that detects the amount of depression of the accelerator pedal 4. Signals from various sensors such as a stepping amount sensor 24, a shift lever position sensor 25 for detecting the position of the shift lever 5 and a work implement operating lever position sensor 26 for detecting the position of the work implement operating lever 6 are input and based on this. The display contents of each part of the display 3 are controlled. The details of this control are as follows.
[0012]
(1) The control device 10 compares the signal from the accelerator depression amount sensor 24 with the clock time stored in the built-in program according to a program incorporated in advance, and switches the display data of the first display 11 based on the comparison result.
For example, when the depression amount of the accelerator pedal 4 is constant for 3 seconds or more and 3 seconds or more have elapsed, the traveling speed detected by the speed sensor 21 is displayed on the first display 11, otherwise, that is, the accelerator pedal 4 is depressed. When the amount changes, the engine speed detected by the engine speed sensor 22 is displayed. Note that it is desirable to change the color of characters to be displayed depending on the data to be displayed. (For example, traveling speed is green, engine speed is red)
In addition, the control device 10 causes the characters on the first display 11 to shine for about 1 second when a shift operation is performed, that is, when the signal from the shift lever position sensor 25 changes according to a program incorporated in advance. (Increase lighting brightness during night lighting)
[0013]
(2) When the control device 10 determines that the scrambling operation is being performed based on signals from the accelerator depression amount sensor 24 and the work implement operation lever position sensor 26 according to a program incorporated in advance (for example, the accelerator pedal 4 is set to a predetermined value or more). When the work implement operating lever 6 is operated in the bucket excavation direction while stepping on, the characters displayed on the third display 13 and the design of the fifth display 15 are illuminated. (Increase the illumination brightness during night illumination). Also, if it is determined that the dumping operation is in progress (for example, when the work implement operation lever 6 is operated in the bucket ascending direction and then operated in the bucket dumping direction within 1 second), The characters displayed on the 4 display unit 14 and the design of the sixth display unit 16 are illuminated.
[0014]
(3) When the control device 10 determines that the dumping operation is being performed according to the procedure described in (2) by the program incorporated in advance, the loading of the bucket detected by the loading weight sensor 23 immediately before the dumping operation is performed. The weight is input to the built-in memory 7 and displayed on the third display 13. Then, the loading weight of the bucket input every time the dump operation is performed is accumulated, and the accumulated value is stored as a loading weight of the dump truck so that it can be read out from the outside and displayed on the fourth display 14.
More specifically, a dial 27 having five switching positions “A”, “B”, “C”, “D”, “E” is provided in the cab 1, and the memory 7 has a specific specification. Memory areas 7a, 7b, 7c, 7d, and 7e are provided. The control device 10 inputs a switching signal from the dial 27, selects any one of the specific memory areas 7a, 7b, 7c, 7d, and 7e, and adds up the loading weight for each selected specific memory area. This value is stored.
For example, the correspondence between the switching position of the dial 27 and the specific memory area, for example, for the switching position “A” of the dial 27, for the specific memory area 7a, and similarly for 7B for “B” and “C”. 7c, 7d for "D", 7e for "E", etc. are determined in advance by a program. Then, the control device 10 inputs the loaded weight of the bucket into the specific memory area 7a while the dial 27 is in the “A” position according to a program incorporated in advance and accumulates the value every time the dump operation is performed. Is stored in the specific memory area 7a and displayed on the fourth display unit 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 with the dial 27. At the same time, the control device 10 flashes the alphabet character in the second display 12, in this case “A”. During this time, the loading weight of the bucket is not input to the other specific memory areas, and the values previously stored as the loading weight of the dump truck are held respectively.
Values stored in each specific memory area can be individually read out.
[0015]
According to the configuration of the present invention described above by exemplifying the embodiment, the passenger is alerted by the visual change of the display state when changing the operation content, and the operation content that he / she is performing naturally Check with the display. Therefore, the possibility of erroneous operation is reduced and the accuracy of work is improved, and the confirmation of the operation content is facilitated, and the passenger's fatigue is reduced. Furthermore, if the data that changes visually is the data stored in the display control device at the same time, the passenger will naturally confirm that the data is stored, and the passenger'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.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Indicator, 4 ... Accelerator pedal, 5 ... Shift lever, 6 ... Work implement operation lever, 13 ... 3rd indicator, 14 ... 4th indicator, 15 ... 5th indicator, 16 ... 6th indicator.

Claims (3)

The engine, work implement, and cab are mounted on the vehicle body and are movable. The operation signal generating means for controlling the operation of the engine, the operation of the work implement, traveling by driving the engine, and the operation of the engine In a display control device for a mobile work machine having a dashboard in which a display for displaying data, operation data of a work machine, travel data by driving an engine, and the like is arranged in a cab,
The engine speed data or traveling speed data and the work equipment operation data are displayed simultaneously on the same screen .
A command to visually change the display data on the display (3) for each change in the operation content of the operation signal generating means (4, 5, 6) is stored in advance, and the amount of depression of the accelerator pedal (4) has changed. Sometimes, a command corresponding to the change is read from the storage unit, and the engine speed data is displayed on the first display (11) corresponding to the accelerator pedal (4) of the display (3) , and the accelerator pedal (4). when the amount of depression became constant predetermined time or more, to display the running speed data on the first display unit (11) and first display the display data (11) visibly changing <br/> A display control device for a mobile work machine. The engine, work implement, and cab are mounted on the vehicle body and are movable. The operation signal generating means for controlling the operation of the engine, the operation of the work implement, traveling by driving the engine, and the operation of the engine In a display control device for a mobile work machine having a dashboard in which a display for displaying data, operation data of a work machine, travel data by driving an engine, and the like is arranged in a cab,
The engine operation data or travel data, the loaded weight data of the bucket that is one of the work machines, and the accumulated value data of the loaded weight are simultaneously displayed on the same screen,
A command for visually changing the display data on the display (3) for each change in the operation content of the operation signal generating means (4, 5, 6) is stored in advance, and the accelerator pedal (4) and the work implement operation lever ( When it is determined that the scooping operation is being performed based on the operation signal from 6) , the command corresponding to the change is read from the storage unit, and the scrubbing operation of the work machine operation lever (6) of the display (3) is supported. When the load weight data of the bucket displayed on the third indicator (13) is visibly changed and it is determined that the dumping operation is being performed, the fourth indicator (14 ) corresponding to the dumping operation of the work implement operating lever (6) ) to the mobile work machine of the display control device of the integrated value data of the loading weight to be displayed and wherein the <br/> that visually varied. The display data on the fourth display (14) is stored whenever it is determined that the dumping operation is being performed based on the operation signal from the operation signal generating means (4, 6), and this stored data can be read out to the outside. The display control apparatus for a mobile work machine according to claim 2, wherein

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