JP2002081096A - Display unit for construction machine and display control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit and a display control device capable of reducing the fatigue feeling and irritation in operation of an operator. SOLUTION: This display unit for the construction machine provided with a working machine is characterized in having a plurality of control units controlling the construction machine and a display part 50 intensively displaying information from a monitor unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a display control device for a construction machine, and more particularly to a display device and a display control device for providing information on the inside and outside of a vehicle body of a construction machine to an operator.

[0002]

2. Description of the Related Art In recent years, with the improvement of performance and multi-functionality of construction machines, electronic control devices for each function have been developed for the purpose of improving body information management, construction efficiency, or maintainability. It is installed.

[0003] For example, Japanese Patent Application Laid-Open No. 5-28648 discloses a management monitor device which has a plurality of display modes for operating information and maintenance information of a vehicle body and switches the display contents according to a vehicle state or a switch operation.

[0004]

In recent years, display devices as shown in the above prior art are increasing in construction machines. When such a display device is additionally provided in the cab, there is a problem that the living space in the cab is compressed.
Also, from the viewpoint of product development, developing and mounting independent electronic control devices for a plurality of display devices leads to an increase in cost.

On the other hand, when the display device as in the above-mentioned prior art is incorporated in a cab, an operator needs to switch the display device during excavation work in order to obtain desired information. There was a problem from the point of view.

In consideration of the above points, it is conceivable to collectively display a plurality of pieces of information on a display surface of a display device. In this case, as described above, since a plurality of pieces of information are displayed on one display surface, there is an advantage that information for managing and using the construction machine can be comprehensively grasped. However, when trying to gaze at desired information from a plurality of information on one display surface, there is the following problem. That is, it is usual that the viewpoint is moved from the whole view on the display surface to a desired information display unit, and the desired information display unit is searched for. In this type of information sensing, skilled workers can respond by getting used to it, but for operators with little experience of driving and elderly operators, they are tired and work delays for operating construction machines are generated. There is a grudge.

SUMMARY OF THE INVENTION The present invention has been made based on the above-described circumstances, and has as its object to provide a display device and a display control device capable of reducing the feeling of fatigue and operation frustration for an operator.

[0008]

According to one aspect of the present invention, there is provided a display device for a construction machine having a working machine, comprising a plurality of control units and a monitor unit for controlling the construction machine. And a display unit for displaying the information from the computer in a consolidated manner.

According to a second aspect of the present invention, in the display device for a construction machine according to the first aspect, the display unit includes a display unit that displays a plurality of pieces of information in independent areas. It is in.

Further, according to a third aspect of the present invention, the display surface of the display unit has at least an area for displaying information of a vehicle body posture and an area for displaying information of an instrument. Display device of construction machinery.

According to a fourth aspect of the present invention, on the display surface of the display unit, an area for displaying information on the posture of the vehicle body is arranged at a position that is easier to see than a display area for other information. The display device of the construction machine described in the above.

Further, according to a fifth aspect of the present invention, in the display control device for a construction machine having a working machine, information from a plurality of control units and a monitor unit for controlling the construction machine is displayed collectively on a display unit. A display control device for a construction machine, comprising a control unit for outputting a command.

According to a sixth aspect of the present invention, the control means includes a control unit for outputting a control output for displaying each of the information in an independent area on a display surface of a display unit. A display control device for a construction machine according to claim 5.

Further, according to a seventh aspect of the present invention, the control means includes a control unit for outputting a signal of the information in a display area of each information set in advance on a display surface of the display unit. 7. The display control device for a construction machine according to claim 6, wherein: In the invention according to claim 8, the control means outputs a command to preset a region for displaying information of the vehicle body posture on the display surface of the display unit at a position more easily viewable than a display region for other information. The display control device for a construction machine according to claim 7, further comprising a controller configured to perform the control.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a control circuit of a hydraulic excavator provided with a first embodiment of the apparatus of the present invention.
In the drawings, 1 is a hydraulic excavator, 2 is a traveling body thereof, and 3 is a revolving body provided on the traveling body 2 so as to be pivotable. The revolving superstructure 3 is provided with a storage room 6 for a prime mover and hydraulic equipment such as a hydraulic pump 5 driven by the prime mover 4, a counterweight 7, an operator's cab 8, and a digging work device 9.

The excavating work device 9 includes a boom 10 provided on the revolving body 3 so as to be able to move up and down, an arm 11 provided rotatably at the tip of the boom 10, and a pivotally provided at the tip of the arm 11. And a hydraulic cylinder 13, 14, 15 for driving the boom 10, the arm 11, and the bucket 12, respectively.

Hydraulic cylinders 13, 14, and 15 flow pressure oil from hydraulic pump 5 through control valves 16, 17, and 18, respectively.
The drive is controlled by adjusting the direction. Each control valve 16,
Reference numerals 17 and 18 denote operation units 16R, 16L, 17R and 17
L and 18R, 18L. These operating units operate the electric levers 19, 20, and 21 to output electric operation signals X1, X2, and X3 from the signal generating units 22, 23, and 24 of the respective levers via the third control unit 25. Driven.

In the hydraulic pump 5, the discharge pressure and the tilt angle of the swash plate 28 of the hydraulic pump 5 are detected by a pressure detector 26 and a swash plate position detector 27 as a pressure signal Pd and a swash plate angle signal θ. The signal is input to the second control unit 29. The control unit 29 adjusts the position of the swash plate 28 of the hydraulic pump 5 via the swash plate position adjusting unit 30 based on the information, and controls the displacement of the hydraulic pump 5, that is, the discharge flow rate of the pressure oil.

The prime mover 4 for driving the hydraulic pump 5 has a governor device 31 for adjusting the number of revolutions. The prime mover 4 has a target rotation speed Nr indicated by the throttle 32 and the governor device 3.
The rotation speed is controlled by a control signal R output from the first control unit 33 to the governor device 31 based on the actual rotation speed Ne of the prime mover detected by 1. The engine 4 has a hydraulic pressure sensor 34 for measuring the pressure of the lubricating oil,
A water temperature sensor 36 provided in a radiator 35 for cooling the cooling water is provided. These sensors 34, 3
The signals of the engine oil pressure Poil and the cooling water temperature Tw detected by 6 are input to the first control unit 33. These signals are used for monitoring an abnormal state of the engine 4.

On the other hand, the electronic control system is provided with sensors for monitoring the state of each device of the vehicle body. In the present embodiment, a fuel level sensor 37 for measuring the remaining fuel amount and a pressure sensor 39 for detecting clogging of a filter 38 provided in a hydraulic circuit are provided. The fuel level signal Fuel and the filter pressure signal Pflt output from these sensors 37 and 39 are input to a first monitor unit 40 described in detail later.

The excavator 9 includes a boom 10 and an arm 1
1. Angle sensors 41, 42, and 43 for measuring the angles of the joints of the bucket 12 are provided. The angle signals detected by these sensors 41, 42, 43 are output to the fourth control unit 44. These signals are used to control the excavating work device 9.

Further, a second monitor unit 45 for storing the operating status of the vehicle body is provided. The second monitor unit 45 receives signals input by other monitor units or control units through communication, and processes them to measure the operating time and operating state of the machine in a time-series or statistical manner. ·Remember.

These control units 33, 29, 25,
44 and the monitor units 40 and 45 mutually transmit and receive signals necessary for control and monitoring via a common communication line 46.

These control units 33, 29, 25,
Information from the monitor 44 and the monitor units 40 and 45 is displayed on the display device 47.

FIG. 2 shows the structure of the first embodiment of the display device 47 of the present invention. In FIG. 2, the same reference numerals as those in FIG. 1 denote the same parts. The display device 47 includes an input unit 48 such as a switch or a key that is pressed when an operator wants to switch the display, a display control unit 49, and a display unit 50 such as an LCD for displaying information.

The display control section 49 includes an interface 490 for inputting a signal from the input section 48, a central processing unit (CPU) 491, and a read-only memory for storing control procedure programs and constants necessary for control. (R
OM) 492 and a random access memory (RAM) 493 for temporarily storing the operation result or a numerical value during the operation.
Communication means 4 for controlling communication between the control unit and the monitor unit, which are connected by an output interface 494 and a common bus (common communication line) 46.
95.

FIG. 3 shows an example of a display screen of the display unit 50 constituting the display device 47. In FIG. 3, the same reference numerals as those in FIG. 2 denote the same parts. Display 5
0 simultaneously displays information of a plurality of information categories and has a plurality of display areas for each information category. In this example, the display area 51 of the instrument information is used as the information category.
0, a display area 520 for body posture information, and a display area 530 for operation information.

The contents of the display area for each information category described above will be described. The display area 510 of the instrument information is
0 is arranged in the lower half. In this area 510, the engine speed 511, the cooling water temperature 512, the hydraulic oil temperature 513,
The fuel level 514 is indicated by a numerical value, a circular meter and a bar-shaped meter, the operation mode 515 and the alarm 516 are indicated by imitating a lighting lamp, and the contents of the alarm are indicated by a text message 517.

A display area 520 for vehicle body posture information is arranged in the upper right half of the display unit 50. In this area 520, the vehicle body left-right inclination angle 521, the bucket rotation angle 522, and the front attitude 523 are displayed by numerical values and an overall image of the actual machine or an illustration imitating each part.

The display area 530 of the operation information is
It is located in the upper left half. This area 530 contains a key
ON time 531, engine ON time 532, excavation time 53
3, the running time 534, the turning time 535, the ML crane operating time 536, and the attachment operating time 537 are displayed by numerical values and bar meters.

In this example, a display area 520 for body posture information, which is information necessary for work, is arranged in the upper right half of the display unit 50, and a display area 510 for instrument information is arranged in the lower half of the display unit 50. In order to reduce information perception on the display unit 50 by the operator, consideration is given.

Next, the display processing operation of the above-described first embodiment of the display device of the present invention will be described with reference to FIG.

First, initial settings are made (step 40).
0). Next, a drawing process of the instrument information category is performed (step 401). In this step 401, the engine speed, cooling water temperature, hydraulic oil temperature, and fuel level obtained by communication are displayed graphically in the meter information display area 510 using a circular or bar-shaped meter in addition to numerical values and units. I do.

When abnormality occurrence information is obtained through communication, an illustration and a message 517 indicating the details of the abnormality are displayed in advance according to the details of the abnormality. Similar displays are added each time an abnormality occurs. When information indicating that the abnormality has been resolved is obtained through communication, the illustration and message of the corresponding abnormality are deleted.

Next, a drawing process of the vehicle body posture information category is performed (step 402). In this step 402, first, the vehicle body left-right inclination angle obtained by the communication is displayed in numerical value and unit in the vehicle body left-right inclination angle 521 in the body posture information display area 520, and at the same time, an illustration of the vehicle body viewed from behind is obtained by communication. The display is rotated according to the tilt angle of the vehicle.

Next, the rotation angle of the bucket 12 obtained by the communication is displayed in numerical values and units in the bucket rotation angle 522 in the display area 520 of the vehicle body posture information, and at the same time, the illustration of the bucket 12 viewed from the side is displayed by the communication. The rotation is displayed according to the obtained bucket rotation angle.

Next, the height and reach of the bucket tip position are calculated from the boom angle, arm angle, and bucket angle obtained by the communication, and are displayed in numerical values and units. At the same time, a horizontal line representing the reference plane height and a vertical line perpendicular thereto are displayed. By superimposing an illustration of the entire vehicle body from the side on a simple line and graphically displaying the illustration, the front posture 523 is displayed in an easily understandable manner.

Next, drawing processing of the operation information category is performed (step 403). In this step 403,
The operation information obtained by communication from the second monitor unit 45 is displayed in the operation information display area 530. Key ON time 531 measured and managed by monitor unit 45, engine ON
The time 532, the excavation time 533, the travel time 534, the turning time 535, the ML crane operation time 536, and the attachment operation time 537 are displayed in numerical values and units, and the key ON when the key ON time 531 is set to 100%. A graphical representation is provided using a bar-shaped graph in which the relative proportion of each operation time other than the time is defined as a length.

Next, returning to step 401, the same operation is repeated.

By the above-described processing, information is sequentially displayed on the display unit 50. Since the vehicle body posture information 520 necessary for work is arranged in the upper right half of the display unit 50 and the instrument information 510 is arranged in the lower half of the display unit 50, the operator can display a plurality of displayed body information. The desired information can be immediately detected from the information.

FIG. 5 shows a second embodiment of the display device of the present invention. In FIG. 5, the same reference numerals as those in FIG. 3 denote the same or corresponding parts. In this embodiment, a display area 5 of vehicle body posture information is provided in an upper left half of a display unit 50.
20 is displayed on the upper right half of the display unit 50 in the display area 5 for the instrument information.
10 is displayed in the lower half of the display unit 50 in a display area 51 of the instrument information.
0 is arranged. The display contents in each display area are the same as those in the above-described first embodiment, and a detailed description thereof will be omitted.

According to this embodiment, the operator's cab 8 of the construction machine is generally installed on the left front side of the excavating device 9 at the front center of the revolving unit 3 so that the operator in the operator's cab can perform the excavating operation. In order to monitor the operation of the device 9, the user often looks at the right front. From this viewpoint, the display unit 50 of the display device 49 is provided in the driver's cab 8 on the right front side. in this case,
Display area 5 of body posture information that is most necessary during work
20 is disposed in the upper left half of the display unit 50, so that the operator who is gazing mainly ahead during the work can move the information of the display area 520 of the vehicle body posture information on the display unit 50 with less movement of the viewpoint. It can be detected promptly.

FIG. 6 shows a thirty-second embodiment of the apparatus of the present invention. In FIG. 6, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In this embodiment, the control units 33, 29, 25, and 44 and the monitor units 40 and 45 are connected to the display device 47 by independent communication lines, respectively. As in the embodiment, similar display contents can be displayed on the display device 47, and similar effects can be obtained.

According to the embodiment of the display device of the present invention, instrument information such as cooling water temperature, hydraulic oil temperature, fuel level, etc.
Information on the vehicle's posture, such as the bucket angle and the lateral inclination angle of the vehicle, and operating information, such as the operating time, can be displayed on a single display unit without any switching operation. In addition to being able to sense, it is possible to improve work efficiency, and it is possible to improve the livability in the driver's cab without reducing the space in the driver's seat due to the installation of the display device.

[0046]

As described in detail above, according to the display device of the present invention, instrument information such as cooling water temperature, hydraulic oil temperature, fuel level, etc., vehicle body posture information such as bucket angle, vehicle body lateral inclination angle, and operating time And other operating information are displayed on a single display unit, so that even operators with little driving experience and elderly operators can immediately obtain at least one piece of information necessary for work from multiple pieces of information. It is possible to eliminate the feeling of fatigue and the frustration at the time of operation.

According to the display control device of the present invention, instrument information such as cooling water temperature, hydraulic oil temperature, and fuel level; vehicle body posture information such as a bucket angle and a vehicle body left / right tilt angle; Since the information is integrated with the display unit so that a command to display the information collectively on one display unit can be output,
The configuration is simplified, and it is possible to provide at least one piece of information necessary for the work from a plurality of pieces of information to an operator with little driving experience or an elderly operator.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a hydraulic shovel and a control circuit including a display device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an embodiment of a display control device of the present invention.

FIG. 3 is a diagram showing a first embodiment of a display unit in the display device of the present invention.

FIG. 4 is a flowchart for explaining the operation of the embodiment of the display control device of the present invention.

FIG. 5 is a diagram illustrating a display unit according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram illustrating another example of a hydraulic shovel and a control circuit provided with the embodiment of the display device of the present invention.

[Explanation of symbols]

 Reference Signs List 1 hydraulic excavator 47 display device 48 input unit 49 display control unit 50 display unit 510 display area for instrument information 520 display area for body posture information 530 display area for operation information

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Watanabe 650 Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura Plant, Shikisha Co., Ltd. (72) Inventor Takeshi Sakyo 650, Kunitachicho, Tsuchiura-shi, Ibaraki Prefecture F-term in Tsuchiura Plant, Hitachi Construction Machinery Co., Ltd. 2D015 HA03 HB00 3D044 BA03 BA04 BA14 BA20 BA21 BA26 BB07 BD01

Claims (8)

[Claims] 1. A display device for a construction machine having a work machine, comprising: a display unit for collectively displaying information from a plurality of control units and a monitor unit for controlling the construction machine. . 2. The display device for a construction machine according to claim 1, wherein said display unit has a display unit for displaying a plurality of pieces of information in independent areas. 3. The display device for a construction machine according to claim 2, wherein the display surface of the display unit has at least an area for displaying information on a vehicle body posture and an area for displaying information on an instrument. 4. The display device for a construction machine according to claim 3, wherein the display surface of the display unit is arranged so that an area for displaying information on the posture of the vehicle body is more easily viewed than a display area for other information. 5. A display control device for a construction machine provided with a working machine, comprising: a plurality of control units for controlling the construction machine;
A display device for a construction machine, comprising: a control unit that outputs a command for collectively displaying information from a monitor unit on a display unit. 6. The construction machine according to claim 5, wherein said control means includes a control section for outputting a control output for displaying each of said information in an independent area on a display surface of a display section. Display control device. 7. The control unit according to claim 6, wherein said control means includes a control unit for outputting a signal of the information in a display area of each information set in advance on a display surface of the display unit. Display control device for construction machinery. 8. A control unit for outputting a command for presetting an area for displaying body posture information on a display surface of a display unit at a position more easily viewable than a display area for other information. The display control device for a construction machine according to claim 7, wherein: