JP2001039695A - Fork level identification device of fork loader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To level a fork rapidly, accurately, and safely for efficient load handling operation when the fork is positioned apart from an operator in a fork loader load handling operation site. SOLUTION: This device is formed so that a level 1 and a CCD camera 2 are installed on a fork device 6, and the level 2 photographed by the CCD camera 2 is displayed on a monitor 3 installed on an operator seat 4. The operator can identify the level of the fork device 6 while observing the image of the level from the operator seat 4. The image data of the level 1 is transmitted to a valve controller through an image analyzer for level control of the fork device 6. Thus, a system to level the fork automatically is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to horizontal position control of a fork of a fork loader.

[0002]

2. Description of the Related Art As a conventional technique, at a factory production site or the like, an operator gives an appropriate instruction while checking the status of a process photographed by a CCD camera on a monitor. However, at the loading work site of a fork loader, a skilled operator usually looks at the fork and the cargo handling target and sets the horizontal position of the fork.

[0003]

However, in the above-described conventional working method, it is difficult to check the horizontal position of the fork when the fork is located far from the operator. It is an object of the present invention to safely level the fork.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to address the above-mentioned problems, and is claimed in claim 1.
According to the invention, a level and a CCD camera are mounted on a fork device, a level photographed by the CCD camera is displayed on a monitor installed in a driver's seat, and an operator views the image in the driver's seat while the horizontal state of the fork device. This is a fork loader fork leveler for fork loader, characterized in that the fork loader can be checked.

[0005] With the above structure, the horizontal position of the fork can be quickly, accurately and safely confirmed by both the operator's visual observation and the level image displayed on the monitor.

According to a second aspect of the present invention, image data of a level is sent to a valve controller via an image analyzer.
The fork leveler of the fork loader according to claim 1, wherein a fork leveling automation system is enabled by controlling the level of the fork device.

Therefore, a control signal is sent to a valve controller by an image analyzer from an image of a level photographed by a CCD camera, and a circuit such as a valve of a hinge cylinder for operating a fork device of a fork loader can be controlled. As a fork automation system that automatically outputs the horizontal position of a fork, automation of cargo handling work can be promoted.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 is a side view of a fork loader to which a level checking device of the present invention is mounted, FIG. 2 is an explanatory view of an image on a monitor, and FIG. 3 is a block diagram of the level checking device. A level 1 and a CCD camera 2 are attached to a side portion of a fork device 6 mounted on the fork loader 5. On the other hand, an image captured by the CCD camera 2 is displayed as an image on the monitor 3 attached to the driver's seat 4 while the level 1 is viewed from directly above, and monitored by the operator of the fork loader 5 while driving. You can do it.

That is, the level 1 is mounted so as to match the direction in which the fork device 6 is directed horizontally, and the CCD camera 2 is fixed at a position where the bubbles of the level 1 can be checked from above. While looking at the level of the device 6 itself from the driver's seat 4, the position of the bubble of the level 1 projected as an image on the monitor 3 is checked, and the horizontal state of the fork device 6 can be monitored.

According to the present invention, as shown in the block diagram of FIG. 3, the image taken by the CCD camera 2 which is arranged and mounted directly above the level 1 is simply output as a display image on a monitor. Configuration.

Further, according to the configuration shown in the block diagram of FIG. 4, the result of analyzing the image data captured by the CCD camera 2 through the image analyzer 8 is transmitted to the valve controller 9, and the horizontal movement of the fork device 6 is activated. The valve 7 of the hinge cylinder to be controlled is controlled by a valve controller 9,
The fork device 6 is kept horizontal. It is shown as an example of a block diagram of a fork level automation system.

Such a high degree of automation is realized by a balance between the required degree and the required cost, and is usually of a simple configuration that emphasizes operator safety and reduces fatigue. Is effective in practice.

[Brief description of the drawings]

FIG. 1 is a side view of a fork loader equipped with a horizontal confirmation device of the present invention.

FIG. 2 is an explanatory diagram of an image on a monitor.

FIG. 3 is a block diagram of a horizontal confirmation device.

FIG. 4 is a block diagram of a fork horizontal automation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Level 2 CCD camera 3 Monitor 4 Driver's seat 6 Fork device 8 Image analysis device 9 Valve controller

Claims (2)

[Claims] A level (1) and a CCD camera (2) are mounted on a fork device (6), and the level (1) photographed by the CCD camera (2) is set in a driver's seat (4). Display on monitor (3),
A fork loader fork loader for a fork loader, wherein an operator can check the horizontal state of the fork device (6) while viewing the image on a driver's seat (4). 2. An image analysis apparatus for converting image data of a level (1) into an image.
2. A fork loader fork fork loader according to claim 1, wherein said fork loader is sent to a valve controller (9) via (8) to control the fork device (6) horizontally, thereby enabling a system for automating fork leveling.