JPH07242400A - Monitor device for forklift - Google Patents

Abstract

PURPOSE:To eliminate a necessity of a hydraulic operation lever, reduce cost, and save space by providing a monitor display which displays storage and delivery work information by means of a fork or information on inspection and monitoring sections of each section of a forklift with a touch switch function for controlling ascent and descent drive and stop of the fork. CONSTITUTION:A lift up/down key 35 and a tilt up/down key 36 which are the touch switches for changing lift speed and tilt speed of a forklift are displayed on a display screen 31. It is possible to ascend, descend, and drive a fork and stop it at a desired lift high position by pressing and operating the touch switches by an operator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a monitor device for a forklift that can input a command for controlling stop.

[0002]

2. Description of the Related Art Conventionally, in this type of forklift truck, in order to display the result of self-diagnosis by a microcomputer in the forklift truck, whether the traveling system, the steering system, the charging status of the battery, the liquid level, or the like is abnormal. In some cases, a monitor device such as a liquid crystal is provided. In addition to this, for the purpose of enhancing the additional function of the forklift, a monitor device for displaying the output contents of the sensor for detecting the ID bar code or the like provided on the pallet on which the cargo is loaded, and other information relating to loading and unloading work, etc. Are provided. In addition, the command to control the fork to be lifted and lowered is given by operating various hydraulic operation levers provided in the driver's seat.

[0003]

By the way, as the functions added to the forklift are enhanced, the contents of information transmitted to the operator are complicated and large in volume. Therefore, many monitor devices for displaying the information are required. In addition to increasing costs, a large installation space is required on the aircraft. Furthermore, if there are many monitors, the hydraulic operation lever for driving and stopping the fork will be an obstacle, and the operability will deteriorate.

The present invention has been made in order to solve the above-mentioned problems, and a fork raising / lowering drive is displayed on a display means for displaying information on the entering / exiting work of a fork or information on the inspection / monitoring points of each part of the forklift truck. An object of the present invention is to provide a monitor device for a forklift truck, which does not require a hydraulic operating lever, can reduce costs, save space, and improve operability by displaying a content that can control stop. .

[0005]

In order to achieve the above object, a monitor device for a forklift according to a first aspect of the present invention comprises a drive means for driving the fork up and down and stopping at a desired lifting position, and a fork. Displaying means for displaying the loading and unloading work information by means of or the information of the inspection / monitoring points of each part of the forklift and a control means for controlling each of the means, and the control means is operated by being pressed by the operator. A touch switch for giving a signal for instructing to drive / stop the fork to the drive means is displayed on the display means. According to a second aspect of the present invention, in the forklift monitor device according to the first aspect, a plurality of fork-in / out work information by a fork, monitor information of inspection / monitoring points of each part of the forklift and a plurality of touch switches are displayed on the display means. It has a display mode, and these display modes can be switched.

[0006]

According to the forklift monitor device of the first aspect, the touch switch is displayed on the display means for displaying various monitor information, and the control means displays the touch switch by the operator pressing the touch switch. It detects and outputs a signal instructing the drive means to drive the fork up and down and stop. The drive means receives the command signal and drives the fork up and down to stop it at a desired lifting position. Therefore,
The operator presses a touch switch instead of the conventional hydraulic operation lever to drive the fork up and down.
The stop can be controlled. According to the forklift monitor device of the second aspect, the operator can know a lot of information by the limited display means by switching the display mode.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a forklift truck. The forklift truck 1 is equipped with an on-board terminal device 2 for displaying and controlling information such as entry / exit information on a monitor.
As a display means of this terminal 2, a liquid crystal (L
A monitor display 3 such as a CD) or a CRT is mounted. And, in particular, this monitor display 3
As will be described later in detail, in place of the conventional hydraulic operation lever, a touch switch for giving an instruction to drive and stop the fork 4 is displayed and has a touch switch function.

FIG. 2 is a block diagram showing the on-board terminal 2 mounted on the main body of the forklift truck and the control system for driving the forklift truck. The on-board terminal 2 is a ROM that stores a CPU 11 that controls the entire terminal and its program.
12. A RAM 13 in which various data are stored is provided. The CPU 11 has a function of communicating information relating to warehousing with a management device of an office via a transceiver 14 and an interface 15. Is displayed on the monitor display 3 via the display driver 16. Further, the CPU 11 causes the monitor display 3 to display a touch switch to have the function thereof. Furthermore, CPU1
Read signals from various sensors 17 for reading ID code information and the like of pallets for loading and unloading are input to 1 via an interface 18.

Further, the forklift truck has a CPU 21 for controlling the drive thereof. The CPU 21 has a function of communicating data with the CPU 11 of the on-board terminal 2 via the interface 22, and controls the driving of the fork hydraulic motor 24 via the motor driver 23.
The fork 4 is controlled to move up and down, and the traveling motor 26 is driven and controlled via the motor driver 25. Furthermore, CPU
21, the state of charge of the battery 27 and a state detection signal from a sensor 28 of a hydraulic system such as a brake or a steering are input via an interface 29, and self-diagnosis,
It has a function to perform maintenance. The result of this self-diagnosis and maintenance inspection is sent to the CPU 1 via the interface 22.
1 is displayed on the monitor display 3.

In this embodiment, there are three kinds of screen modes displayed on the monitor display 3, and the mode can be switched by pressing the mode switching key displayed on the screen. The display mode includes a touch switch display mode, an inspection / monitoring display mode, and an entry / exit information display mode.

3, 4, and 5 show examples of display screens in the touch switch display mode, the inspection / monitoring display mode, and the entry / exit information display mode, respectively. First, the display screen 31 of FIG. 3 will be described. On the same screen 31, a picture 32 of the forklift, a setting key 33 for stopping the fork at four set heights, a memory key 34 for storing the set height, a lift speed / tilt speed of the forklift. Lift, which is a touch switch for changing
An up / down key 35, a tilt up / down key 36, and a mode switching key 30 for mode selection are displayed.

The picture 32 of the forklift is a picture 32a of a fork that is hydraulically moved up and down, tilted and reached.
Is provided. The fork picture 32a moves according to the current lift height, and also moves according to the current tilt angle, as indicated by the alternate long and short dash line in the figure. The setting key 33 lights up when the height is set, and blinks when the setting key 33 is pressed and that step is selected. Further, when the height is set, a line is inserted between the setting key 33 and the picture 32 of the forklift at the position A corresponding to the set height. The lift up / down key 35 is used to increase or decrease the lift speed, and the operator can operate the 35a in the figure.
Lifting speed can be changed by placing a finger on the part and moving it up and down. Then, when you release your finger, the switch function returns to neutral. The tilt up / down key 36 is for increasing or decreasing the tilt speed, and the method for changing the tilt speed is the same as the method for the lift up / down key 35.

Next, the display screen 41 in the inspection / monitor display mode of FIG. 4 will be described. On this screen 41, a battery remaining capacity meter 42, seven pictograms 43 to 49 for displaying monitor information of monitoring points necessary for daily inspection of the forklift and each operation, and characters for displaying accumulated use time Display 4
0 and a mode switching key 30 for mode selection are displayed.

Display screen 5 in the storage / receipt information display mode of FIG.
1 will be described. On this screen 51, the "location number" column 52 of the rack on which the luggage is loaded and the "quantity" of the luggage
Column 53, “Item Name” column 54 of the package, and “Delivery Destination” of the package
A column 55 and a mode switching key 30 for selecting a mode are displayed, and corresponding storage / delivery information is displayed in each of the above columns.

FIG. 6 is a flow chart showing a processing procedure for mode selection by the mode switching key 30. It is determined whether or not the mode switching key 30 has been input (S1).
When there is a mode switch key input, in the touch switch display mode (YES in S2), the inspection / monitor display mode screen 41 is displayed (S3). In the inspection / monitor display mode (YES in S4), the screen 51 of the storage / delivery information display mode is displayed (S5). In the warehousing / unloading information display mode (NO in S4), the touch switch display mode screen 31 is displayed (S6). Mode switch key 30 in S1
If there is no input, another process is performed (S7).

FIG. 7 is a flow chart showing a processing procedure when a touch key is input. When the touch key inputs 35 and 36 are present, it is determined whether the lift up command or the down command is issued (S
31, S32). When the lift is commanded, the lift is driven to move up (S33). When the lift down command is issued, the lift is driven down (S34). When neither the lift up command nor the down command is issued, it is determined whether or not it is a lift tilt command (S35). When the lift tilt command is issued, the lift tilt operation is performed (S36). When it is not a lift tilt command, it is determined whether or not it is a lift reach command (S3
7) When the lift reach command is issued, the lift reach operation is performed (S38). When it is not the lift reach command, another process is performed (S39).

The present invention is not limited to the above embodiment, but various modifications can be made. In the above embodiment, the modes are divided into three, but the number of modes may be any number, and all the information may be displayed on one screen without switching the modes. Further, in FIG. 2 above, C for the on-board terminal
Although two CPUs such as the PU 11 and the forklift drive control CPU 21 are used, one CPU may be used. In addition, using two monitor displays,
A touch switch may be displayed on one side, and self-check information and warehousing / leaving information may be switched and displayed on the other side, and various other modifications are possible.

[0018]

As described above, according to the invention of claim 1,
A touch switch is displayed on the display means for displaying the information on the loading and unloading work by the fork or the information on the inspection / monitoring points of each part of the forklift, and the operator presses the touch switch to move the fork up and down to the desired position. Can be stopped at the lift position. Therefore, one display means can be used effectively as a monitor display of various information relating to forklift loading / unloading work or various parts inspection / monitoring, and display of a touch switch for fork lift drive. Can be reduced, and cost reduction and space saving can be achieved. In addition, since the touch switch function is provided, the hydraulic operation lever for driving the fork up and down, which has been required in the past, is not required, and the space can be saved and the operability can be improved. According to the invention of claim 2, it has a plurality of display modes, and by displaying the information related to one mode by using the entire one screen by mode switching, it is possible to display a large screen, which is easy to see. It will be easy to use.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outer appearance of a forklift truck according to an embodiment of the present invention.

FIG. 2 is a block configuration diagram showing an on-board terminal device and a fork drive control system mounted on a forklift truck.

FIG. 3 is a diagram showing an example of a display screen in a touch switch display mode.

FIG. 4 is a diagram showing an example of a display screen in an inspection / monitoring display mode.

FIG. 5 is a diagram showing an example of a display screen in a storage / delivery information display mode.

FIG. 6 is a flowchart showing a processing procedure of mode selection by a mode switching key.

FIG. 7 is a flowchart showing a processing procedure when a touch key is input.

[Explanation of symbols]

 1 Forklift truck 3 Monitor display 4 Fork 30 Mode selection key 31 Touch switch display mode display screen 35 Lift up / down key 36 Tilt up / down key 41 Inspection / monitor display mode display screen 51 Incoming / outgoing information display mode Display screen

Claims (2)

[Claims] 1. A drive means for driving the fork up and down and stopping it at a desired lift position, and a display means for displaying on-off work information by the fork or information on inspection / monitoring points of each part of the forklift on a monitor. And a control means for controlling each of the above-mentioned means, wherein the control means includes a touch switch for giving a signal for instructing up / down drive / stop of the fork to the drive means by being pressed by an operator. A forklift monitor device characterized by displaying on the display means. 2. A monitor device for a forklift according to claim 1, wherein a plurality of display modes are provided for displaying information on a loading / unloading operation by a fork, monitor information on an inspection / monitoring point of each part of the forklift, and each of the touch switches on a display means. Have
A monitor device for a forklift characterized by being able to switch between these display modes.