JPH06115870A - Crane operation method - Google Patents

Abstract

PURPOSE:To save a labor required for operation. CONSTITUTION:A suspension ring 2 disposed at the interior in a furnace 1 being invisible by an operator for a telecontrol system 8 is photographed by an ITV camera 3 and the image thereof is projected by means of a video projector 7 attached to the lower part of a driver's cab 6. The telecontrol system 8 is operated by the telecontrol system operator as the suspension rig 2 photographed by the ITV camera 3 is watched by the operator through the video projector 7.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for operating a crane.

[0002]

2. Description of the Related Art Crane work in an iron mill has been conventionally performed by using, for example, equipment as shown in FIG. In FIG. 2, reference numeral 1 is a furnace used for heat-treating cold-rolled coiled steel, and a suspension ring 2 is provided at the center of the upper portion thereof. When carrying the furnace 1 for mounting and dismounting the furnace 1, the hook 4 of the crane 5 is hooked on the suspension ring 2 and the furnace 1 is lifted by the crane 5.
The operation of the crane 5 is performed by an operator who has boarded the cab 6.

Since the suspension ring 2 of the furnace 1 and the position of the hook 4 can be seen from inside the cab 6, an operator in the cab 6 hooks the suspension ring 2 with the hook 4. Furnace 1
Can be lifted, but it is difficult to accurately position the furnace 1 at a predetermined destination on the ground because it is located away from the ground. Therefore, another worker (lower worker) 9 is always on the ground, and the lower worker sends a signal to the worker in the cab 6.

[0004]

As described above, at least two workers have conventionally been required to operate one crane. Further, in order to rationalize this kind of work, a device for remotely controlling the operation of the crane (called a telecon) has been developed. Since the furnace 1 cannot be accurately positioned and the suspension ring 2 in the furnace 1 cannot be seen from the ground, two workers are indispensable even when using the teleconverter.

Therefore, it is an object of the present invention to reduce the number of workers and rationalize the work in the above-mentioned crane work.

[0006]

In order to solve the above-mentioned problems, in the present invention, an image pickup means 3 for picking up an image of the suspension ring 2 mounted inside the furnace 1 which is invisible to the operator is provided near the hook 4. The image monitor means 7 is arranged below the cab 6 of the crane, and the output of the image pickup means 3 is visualized by the image monitor means 7, and the remote operation means 8 for remotely controlling the crane is arranged as the image monitor means. Place it in a position where you can see the image of 7 and operate the crane remotely.

The symbols given to the above-mentioned respective elements coincide with the reference numerals of the elements in the embodiments to be described later, which are in a corresponding relationship therewith.

[0008]

According to the present invention, the suspension ring 2 is picked up by the image pickup means 3, and the image is displayed on the image monitor means 7 as an image. Therefore, even a worker on the ground can know the positional relationship between the suspension ring 2 and the hook 4 from the image of the image monitor means 7. That is, if the operator on the ground operates the remote control means 8 while watching the image on the image monitor means 7, the hook 4 can be hooked on the suspension ring 2 and the furnace 1 can be accurately positioned at a predetermined position on the ground. Therefore, it is not necessary to arrange another worker in the cab 6 of the crane.

[0009]

[Embodiment] FIG. 1 shows the configuration of equipment in one embodiment.
The same components as those in FIG. 2 are designated by the same reference numerals. In FIG. 1, reference numeral 1 denotes a furnace used for heat-treating cold-rolled coiled steel, and a suspension ring 2 is provided at the center of the upper portion thereof. When carrying the furnace 1 for mounting and dismounting the furnace 1, the hook 4 of the crane 5 is hooked on the suspension ring 2 and the furnace 1 is lifted by the crane 5.
The crane 5 can be operated inside the driver's cab 6, but can also be remotely operated by operating a separately provided telecon 8.

A little above the hook 4 of the crane 5 is I
The TV camera 3 is installed with the image pickup surface facing downward,
The ITV camera 3 is positioned so as to image a part of the hook 4 and the front thereof, that is, the suspension ring 2 on the furnace 1. The video signal output by the ITV camera 3 is a clear signal.
It is input to the video projector 7 disposed below the driver's cab 6 of the computer 5. This video projector 7 is an ITV
The image captured by the camera 3 is displayed on the screen as a video.

In this example, no operator is present in the cab 6 of the crane 5, and one operator 10 on the ground carries the teleconverter 8. By operating the telecon 8, the worker 10 can remotely operate the crane 5 from the ground to carry an annealing tool such as a coil (steel), a furnace 1, a cooling cover, a convector, and an inner cover. it can.
Since the worker 10 is on the ground, the worker 10 can approach a moving object such as the furnace 1 and accurately position it at a predetermined position. In addition, the suspension ring 2 in the furnace 1 is installed on the ground worker 10
Can not be seen directly, but by seeing the image of the video projector 7, the hook 4 and the suspension ring 2 on the furnace 1
It is possible to know the positional relationship with and to lift the furnace 1 by the crane 5.

[0012]

As described above, according to the present invention, the crane can be operated only by at least one operator placed on the ground.
Since the furnace can be hoisted and the hoisted furnace can be accurately positioned at a predetermined position, the labor of crane work can be saved.

[Brief description of drawings]

FIG. 1 is a front view showing a configuration of equipment for implementing the present invention.

FIG. 2 is a front view showing a conventional crane device.

[Explanation of symbols]

 1: Furnace 2: Suspended ring 3: ITV camera 4: Hook 5: Crane 6: Driver's cab 7: Video projector 8: Teleconverter 9, 10: Worker

Claims (1)

[Claims] 1. An image pickup means (3) for picking up an image of a suspension ring (2) mounted inside a furnace (1) invisible to an operator is arranged near a hook (4), and an image monitor means (7) is provided under a cab (6) of a crane. Is arranged, the output of the image pickup means 3 is visualized by the image monitor means 7, and the remote operation means 8 for remotely operating the crane.
Is placed at a position where the image on the image monitor means 7 can be seen, and the crane is operated remotely.