JPH08324998A - Work display device for work vehicle - Google Patents

Abstract

PURPOSE: To perform displaying a work condition, displaying an abnormality content or the like and displaying order and content of work start inspection or the like, easily understood by a worker. CONSTITUTION: A device has operating condition detecting sensors (11) of detecting an operating condition of a work device in a work vehicle and a display 20 of displaying the operating condition detected by these sensors, to perform an illustration image display 20a and a character information display 20b in the display 20. In the illustration image display 20a, each operating amount of the work device is displayed by using a value or scale display, and in the character information display 20b, information related to the operating condition of the work device is character-displayed in accordance with a prescribed priority order. When generated abnormality, by the character information display 20b, a content of abnormality and a corresponding measure relating to this abnormality are displayed. At work start inspection time, an inspection operating content is displayed by the character information display 20b, to display an operating condition by the illustration image display 20a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work display device for displaying an operating state of a work device in a work vehicle such as an aerial work vehicle.

[0002]

2. Description of the Related Art In an aerial work vehicle or the like, a working device mounted on a vehicle body is adapted to be operated in accordance with an operation of an operator. It is necessary to grasp what kind of operating state is actually present, and in the past, an operator visually confirmed this.

When an abnormality occurs in a work device in such a work vehicle, an alarm buzzer, an alarm lamp or the like is often used to inform the operator of the occurrence of the abnormality. I checked each time to see if something was wrong. Further, before starting the work by such a work vehicle, it is checked whether or not the work device operates normally. Such a start-up inspection is carried out in a predetermined order by hijacking a manual.

[0004]

Here, if the worker can easily grasp what kind of state the work device is actually in when the worker operates the work device, the work efficiency is improved. Can be significantly improved, and if the operator can easily understand the content of the abnormality, the occurrence location, etc. when the abnormality occurs, the burden on the operator can be significantly reduced. For this reason, there is a demand for a display device that can easily and clearly display the work state, the content of the abnormality, the location where the abnormality has occurred, and the like to notify the operator. Similarly, there is a demand for a display device that can easily and clearly display the inspection sequence and contents in the start-up inspection and the like.

The present invention has been made in view of such circumstances.
It is an object of the present invention to provide a work display device for a work vehicle that allows a worker to easily display a work status display, an abnormality content display, a start-up inspection order, and the like.

[0006]

A work display device of the present invention for achieving the above object is an operating state detecting means for detecting an operating state of a working device in a work vehicle, and is detected by the operating state detecting means. And a display means for displaying the operating state. The display on the display means consists of an illustration image display of the work device and a character information display that displays operation related information of the work device.In the illustration image display, each operation amount of the work device is displayed at a corresponding position on the illustration image display. It is displayed using a numerical value or scale display, and in the character information display, information related to the operating state of the work device is displayed in characters according to a predetermined priority order.

When an abnormality is detected by the abnormality detecting means for detecting the presence / absence of an abnormality in the work device, the character information is displayed to indicate the content of the abnormality and a countermeasure for the abnormality when the abnormality is detected by the abnormality detecting means. Is preferably extracted from the information previously stored in the controller and displayed.

Further, inspection command means for starting work inspection is provided, and when the inspection command is output from the inspection command means, the contents of the inspection operation are displayed by the character information display, and the work operated in accordance with the contents of the inspection operation. It is preferable to display the operating state of the device by an illustration image display.

[0009]

With the work display device having the above-described configuration, when the worker performs an operation operation during work, the operation amount of the work device associated with this operation is displayed at the corresponding operation location on the illustration image display. The operator can grasp the operating status at a glance by looking at this illustration image display.
At this time, at the same time, information relating to the operating state at that time is displayed in characters on the character information display in a predetermined priority order, and the operator can grasp the operating state at that time in more detail.

When an abnormality occurs, the operator can know the details of the abnormality and the measures for dealing with the abnormality just by looking at the character information display, and the burden on the operator is reduced. Further, at the time of start-up inspection, it is only necessary to perform the inspection operation as displayed on the character information display, which facilitates the start-up inspection and reduces the burden on the operator.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows an example of an aerial work vehicle equipped with a work display device according to the present invention. This aerial work vehicle has a swivel base 2 that can swivel on a vehicle body 1, and a telescopic boom 3 is attached to the swivel base 2 so as to be able to rise and fall.
The telescopic boom 3 is composed of a telescopically (nestedly) telescopically extensible base end boom 3a, an intermediate boom 3b, and a tip end boom 3c.
It is pivotally supported via a and can be raised and lowered. The telescopic boom 3 is telescopically operated by a telescopic cylinder (not shown) provided inside, so that the swivel base 2 and the base end boom 3a can be moved.
The hoisting cylinder 4 is disposed between the hoisting machine and the hoisting machine.

A support member 6 is attached to the tip of the tip boom 3c so as to be pivotally supported by a pin 3d so as to be vertically swingable. The support member 6 has a vertical post 6a, and a workbench 7 is horizontally swingably attached to the vertical post 6a. An operator M is mounted on the workbench 7, and the workbench 7 is always held horizontally regardless of whether the boom 3 is raised or lowered. For this reason, this aerial work vehicle is equipped with a leveling device including an upper leveling cylinder 5a and a lower leveling cylinder 5b.

The bottom-side oil chambers and the rod-side oil chambers of the both leveling cylinders 5a and 5b are communicated with each other, and a swinging operation opposite to the undulating operation of the telescopic boom 3 is applied to the support member 6 to perform work. The table 7 is always held horizontally. Outrigger jacks 9 are attached to the front, rear, left, and right of the vehicle body 1 to extend and support the vehicle body 1 during work.

In the aerial work vehicle constructed as described above, a worker M on the workbench 7 operates the upper operation device 8a arranged on the workbench 7, or a worker on the ground makes a lower part. By operating the operating device 8b, the swing table 2 is swung, the boom 3 is raised and retracted, the work table 7 is swung, and the work table 7 is moved to a predetermined height. .

This aerial work vehicle is provided with an operation display device as shown in FIG. The operation display device has a liquid crystal display 20, and the display 20 includes an illustration image display section 20a and a character information display section 20b. The illustration image display unit 20a displays a front illustration image 21a of an aerial work vehicle and a plane illustration image 21b of an aerial work vehicle. The front illustration image 21a includes a vehicle body image 31, a swivel base image 32, a boom image 33, and a workbench image 3.
7 and the outrigger image 39 are displayed, and the vehicle body image is displayed on the planar illustration image 21b.

In the front illustration image 21a,
Corresponding to the boom image 33, a boom hoisting angle digital display 22a and a hoisting operation direction display 22b, a boom extension amount digital display 23a, and a telescopic operation direction display 23b.
A vertical digital display 24 and a horizontal position digital display 25 indicating the vertical and horizontal positions of the work table 7 are provided corresponding to the work table 37. Further, a digital display 26a and a scale display 26b of the load factor (the ratio of the actual moment acting on the vehicle body from the workbench side to the allowable moment) at that time are also provided.

In the flat illustration image 21b,
A swivel angle digital display 27a and a swivel operation direction display 27b, and a scale display 28 of the outrigger jack overhang amount are provided.

Each display in these illustration images 21a and 21b is controlled by the controller 10. Therefore, various signals are input to the controller 10. For example, the boom hoisting angle sensor 11 inputs the hoisting angle signal of the boom 3, the boom length sensor 12 inputs the extension amount signal of the boom 3, the turning angle sensor 13 inputs the turning angle signal of the swivel base 2, and the hoisting angle signal. From the axial force sensor 14 composed of a load cell provided in the pivotal support of the cylinder 4 and the pivotal support of the lower leveling cylinder 5b, the sensor 1
The total axial force signal detected by 4 is input, the tension signal to the side of the vehicle body of each jack 9 is input from the jack tension sensor 15, and the ground detection signal of each jack 9 is input from the jack ground sensor 16. It Furthermore, the operating device 8
(Consists of an upper operation device 8a and a lower operation device 8b)
The operation signals are input from the switch, and the switch operation signals are input from the start-up inspection switch 17 and the display changeover switch 18.

The controller 10 causes the display 20 to display based on these input signals. Specifically, when the operating device 8 is operated, a hydraulic valve (not shown) or the like is operated in response to the operation, the swing control is performed by driving the swing motor of the swivel base 2, and the boom hoisting operation is performed by operating the hoisting cylinder 4. Control and boom expansion / contraction operation control by the operation of the expansion / contraction cylinder are performed. At this time, the operation signal of the operation device 8 is also input to the controller 10 at the same time, and it is understood what kind of operation is performed in the controller 10.

When each operation is performed in this manner, each operation is detected by each sensor. For example, boom 3
When the undulation operation is performed, this operation is detected by the undulation angle sensor 11, a value indicating the detected undulation angle is displayed on the undulation angle digital display 22a, and the undulation operation direction is the operation direction display 2
It is shown by lighting one of the arrows of 2b. Similarly, when the telescopic operation of the boom 3 is performed, the value indicating the boom length detected by the boom length sensor 12 is displayed on the boom extension amount digital display 23a, and the extension direction is displayed on one of the telescopic operation direction displays 23b. It is indicated by lighting the arrow. The same applies to the turning operation of the swivel base 2. The value indicating the turning angle detected by the turning angle sensor 13 is displayed on the turning angle digital display 27a, and the turning direction is indicated by one of the arrows on the turning operation direction display 27b. Illuminated to indicate.

Further, the vertical and horizontal positions of the work platform 7 when the boom 3 is raised and lowered and extended and retracted as described above (the height of the work platform 7 from the ground and the horizontal distance from the center of the vehicle body to the work platform). Are calculated in the controller 10, and the values indicating these positions are displayed in the vertical digital display 24.
And in the horizontal digital display 25.

When performing work at a high place with an aerial work vehicle, the outrigger jack 9 is extended laterally and is grounded to support the vehicle body 1. At this time,
The extension amount of each outrigger jack 9 detected by the jack extension width sensor 15 is lit and displayed on the extension amount scale display 28. The jack tension width sensor 15 is composed of a plurality of limit switches arranged at predetermined intervals in the jack extension direction, and detects the tension of the jack from the on / off state of the limit switches. Accordingly, the extension amount scale displays 28 are sequentially lit one by one to indicate the tension width of each outrigger jack 9.

In the controller 10, the workbench 7
The actual moment acting from the workbench 7 and the boom 3 to the vehicle body 1 side is calculated based on the position of, and the allowable moment corresponding to the swing angle of the swivel base 2 and the overhang width of the outrigger jack 9 at this time is also calculated, The load factor of the actual moment with respect to the allowable moment is calculated. A value indicating this load factor is displayed on the load factor digital display 26a, and
The load factor scale display 26b is lit up.

As described above, since the operating states of the working device associated with the operation of the boom, the swivel, etc. are all displayed on one display 20 at the same time, the worker can
All the operating states of the working device of the aerial work vehicle can be easily grasped simply by looking at the respective displays of the illustration image display section 20a in FIG. Therefore, work efficiency is significantly improved.

On the other hand, in the character information display portion 20b of the display 20, as shown in FIG. 1, it is considered to be the most important at that time in relation to the operation of the work device such as "work range is being regulated". Information is displayed in text.
Such character information includes display items and contents shown in FIG. However, since the information that can be displayed at one time is limited, it is necessary to display the information that is considered to be the most important in relation to the operating state at that time, so in this device, prioritize these display items, When there are multiple items to be displayed, the item with the highest priority is displayed.

In this example, the display item "operation stop", which is a state that occurs when the emergency stop switch is pressed, has the highest priority, and in this state, it is displayed with priority over any other display item. It When the emergency stop switch is not pressed, priority is given to the display when the moment regulation (regulating the boom operation etc. when the load factor reaches a predetermined value) is released. Further, when the moment restriction is not released, the display item "interlock" having the third priority is displayed first. This is a display performed when the outrigger jack 9 is not grounded.
This is displayed when it is not detected that the is grounded.

In the following, the priorities are set in the same manner, and the display content "Only lower operation is possible" is displayed for the display item "Lower priority" when only the lower operation device 8b is allowed to operate. Even in the state in which the priority is the lowest and only the lower operation device 8b can be operated, the other display shown in FIG. 3 is displayed only when it is unnecessary.

The display on the display 20 is also used for the start-up inspection before the start of work. When performing the start-up inspection, first the start-up inspection switch 17 is turned on. Along with this, the controller 10 displays the start-up inspection item on the character information display portion 20b. This start-up inspection item has been fixed from the past, but since it was described in the manual in the past, the worker carried out the inspection sequentially while reading this manual. However, with this device, the start-up inspection switch 1
When 7 is turned on, the inspection items are sequentially displayed on the character information display portion 20b.

Specifically, when the start-up inspection switch 17 is turned on, first, as shown in FIG. 4, the text "Please raise and lower" is displayed. When the operator operates the operating device 8 in response to this and operates the boom 3 in the upright direction, the up / down direction arrow in the boom up / down operation direction display 22b blinks and the boom 3 operates in the upright direction. The undulation angle is displayed on the undulation angle digital display 22a at the same time. At this time, the operator not only looks at the display on the display 20 but also looks at the actual movement of the boom 3 to confirm whether the boom is operating normally.

When the inspection of the boom hoisting operation is completed, the operator pushes the display changeover switch 18. As a result, the next inspection item, "Please extend the boom," is displayed on the character information display portion 20b. When the operator performs a corresponding operation to extend the boom 3, the arrow indicating the extension direction in the extension / contraction direction operation display 23b flashes and the extension amount is displayed on the extension amount digital display 23a. After that, the inspections are sequentially performed in the same manner, and when the inspections of all the inspection items are completed, the message "the inspection is completed" is displayed on the character information display portion 20b.

The display 20 is also used to display an abnormality that occurs during work or the like. For example, when an abnormality occurs during work and the operation of the boom or the like stops, the display as shown in the upper portion of FIG. 5 is displayed. In the abnormality display, a warning column appears in the character information display portion 20b, and the content of the abnormality "abnormal stop" and an error code such as "E89" are displayed. However, in this case, the display indicating the abnormal content "abnormal stop" is not displayed continuously, but this display and the display "Please stop using" are displayed at predetermined intervals (for example, every 2 seconds). so)
The display is switched alternately. That is, when an abnormality occurs, the content of the abnormality and the measure for the abnormality are alternately switched and displayed.

Further, at this time, the display changeover switch 18
When is pressed, the display on the display 20 is switched to the display shown in the lower part of FIG. Here, the display "Please push the emergency button to store" and the display "Please have a check at the nearest service" are switched and displayed at predetermined intervals to inform the operator of detailed countermeasures. Has become.

Although the case of abnormal stop has been described as an example here, the contents of the abnormality are various, and an appropriate display is displayed on the character information display portion 20b corresponding to each abnormality content. Also. At this time, when the abnormal portion can be identified, for example, when the boom has an abnormality, a display for notifying the abnormal portion is made by blinking the illustration image of the boom on the illustration image display unit 20a.

[0034]

As described above, according to the present invention,
In the illustration image display of the display means,
Each operation amount of the work device is displayed using a numerical value or a scale display at the corresponding position on the illustration image display, and in the character information display, information related to the operation state of the work device is displayed in characters according to a predetermined priority order. Therefore, when an operator performs an operation operation during work, the operation state of the work device associated with this operation can be grasped at a glance by looking at the illustration image display, and the burden on the operator is reduced.

Further, when an abnormality occurs, the operator can know the details of the abnormality and the measures for coping with the abnormality just by looking at the character information display, and the burden on the operator is reduced. Further, at the time of start-up inspection, it is only necessary to perform the inspection operation as displayed on the character information display, which facilitates the start-up inspection and reduces the burden on the operator.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a work display device according to the present invention.

FIG. 2 is a front view showing an aerial work vehicle provided with this work display device.

FIG. 3 is a table showing character information display items and contents in this work display device.

FIG. 4 is a schematic view showing a display example of the work display device at the start-up inspection.

FIG. 5 is a schematic diagram showing a display example of the work device when an abnormality occurs.

[Explanation of symbols]

 3 Boom 7 Workbench 9 Outrigger jack 10 Controller 20 Display 20a Illustration image display section 20b Character information display section

Claims (3)

[Claims] 1. A work display device for a work vehicle comprising: an operation state detecting means for detecting an operation state of a work device in the work vehicle; and a display means for displaying the operation state detected by the operation state detecting means. In, the display on the display means comprises an illustration image display of the working device and a character information display for displaying operation-related information of the working device. In the illustration image display, each operation amount of the working device is displayed. It is displayed by using a numerical value or a scale display at the corresponding position on the illustration image display, and in the character information display, work display of the work vehicle characterized by displaying information related to the operating state of the work device in characters. apparatus. 2. An abnormality detecting means for detecting the presence / absence of an abnormality of the working device, an abnormality content corresponding to a signal from the abnormality detecting means, and a countermeasure for the abnormality are stored in advance, and the abnormality detecting means is stored. The work display device for a work vehicle according to claim 1, further comprising: a controller that displays the content of the abnormality stored in response to a signal from the controller and a countermeasure for the abnormality in characters. 3. An inspection command means for outputting an inspection command is provided, and the contents of the inspection operation stored in advance are displayed on the character information display by the signal of the inspection command means, and the operation is performed in accordance with the inspection operation content. The work display device for a work vehicle according to claim 1 or 2, wherein the operating state of the work device is displayed as the illustration image.