JPH0663630A - Runout table for hot-rolling mill - Google Patents

Abstract

PURPOSE:To exchange rolls in a short time, with good accuracy and with a few operators by moving a truck on which plural rolls are mounted freely on the outside of a line in the lateral direction of a pass line and providing a device for adjusting the height. CONSTITUTION:Plural rolls 1, drive motors 2, lower headers 5 are mounted on the upper surface of a roll frame 6. An adjusting worm jack is provided below the roll frame 6 and the height of the pass line can easily be adjusted. When the roll 1 is changed, the adjusting worm jack is dropped, the frame 6 is lowered on a frame traveling rail 8, and the lower headers 5 are separated, moved by a frame moving device 7 to the outside of the line in the lateral direction of the pass line and exchanged into another well-organized frame 6. The work for removing upper header, the lower headers 5, the roll 1, etc., is unnecessitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a runout table for a hot rolling mill which conveys a steel sheet by a plurality of rollers.

[0002]

2. Description of the Related Art In a steelmaking process, a steel sheet sent from a hot finish rolling mill is cooled to control its temperature.
In order to perform this cooling, the steel sheet is cooled to a desired temperature by cooling water sprayed from cooling headers provided above and below the cooling table while passing over a cooling table composed of a plurality of rollers. Such a cooling table is referred to as a runout table, and a device for cooling a steel sheet to a desired temperature is referred to as a hot rolling runout table.

FIG. 5 (a) is a sectional view of a conventional run-out table for a hot rolling mill, and FIG. 5 (b) is a section A of FIG. 5 (a).
It is the side view which abbreviate | omitted and saw some from the -A direction. This hot rolling mill runout table includes a roller base pedestal 3 and an upper header 4 that extends above the roller base pedestal 3 and injects cooling water from above a steel plate (not shown).
And a lower header 5 that injects cooling water from below the steel plate,
The roller base 3 includes a roller 1 provided on the upper surface of the roller base 3 for rotating and conveying a steel plate, and a drive motor 2 for rotating the roller 1.

A steel sheet is sent from a hot finish rolling mill (not shown) onto a run-out table consisting of a plurality of rollers 1, and the drive motor 2 rotates the rollers 1 so that the steel sheet is placed on the cooling table. 5 (a) moves in the direction perpendicular to the paper surface. During this movement, the steel plate is placed on the upper header 4
The cooling water is jetted from the lower header 5 and cooled to a desired temperature. Since the steel plate frequently moves on the roller 1 as described above, the roller 1 is worn, and this wear requires periodical replacement of the roller 1 itself and replacement of the bearing portion of the roller 1.

[0005]

In the above-mentioned conventional technique, as shown in FIG. 5B, the rollers 1 are individually installed on the roller base stand 3 as shown in FIG. 5B. Therefore, in order to replace the roller 1, the upper header 4 and the lower header 5 must be removed for each roller 1, and the roller 1 must be lifted and replaced by a crane or the like, which causes a problem that it takes time. is there. In addition, for each replacement of the roller 1, as shown in FIG.
A method of extracting and replacing the roller 1 with the drive motor 2 and the like to the left side in (a) is also adopted, but there is a problem that the workability is poor and it takes time and labor because the work space is small in an iron factory. In addition, the diameter of the new roller that was replaced and the diameter of the old roller before replacement differ due to wear, so even if the level of the old roller is the same as the level of the rollers before and after that, the new roller will not The rollers do not have the same level as that of the rollers, which deteriorates the sheet passing property, which indicates the ease of passing the steel sheet on the runout table. For this reason, it takes time and labor to adjust the level of each new roller that has been replaced with the rollers before and after the new roller, and this level adjustment requires relative level adjustment between the new roller and the rollers before and after it. Since this is an adjustment method, there is a problem in that the level control of the entire runout table has a limit in its accuracy, which causes a deterioration of the stripability of the steel sheet. Therefore, there has been proposed a technique for facilitating the replacement of the roller by inclining the roller and replacing the roller (Japanese Patent Laid-Open No. 63-12).
3514). However, even with this method, the level adjustment between the new roller and the old roller is necessary, and the workability problem remains.

In view of the above circumstances, an object of the present invention is to provide a runout table for a hot rolling mill, which has improved workability of roller replacement and easy level control.

[0007]

A run-out table for a hot rolling mill according to the present invention for achieving the above object is freely movable outside a side line of a pass line and a plurality of rollers are placed separately. And a passline height adjusting device provided on the passline for adjusting the height of the truck.

It is also a preferable configuration to provide a removable carriage moving device here.

[0009]

The function of the runout table for the hot rolling mill of the present invention is
Since it has a trolley on which multiple rollers are mounted, when displacing the rollers, the trolley must be replaced together, which eliminates the work of removing the upper header, lower header, and rollers for roller replacement. The workability of is improved.

By using the carriage moving device for replacing the carriage, the workability can be improved.
Further, since the hot rolling mill runout table of the present invention is provided with the pass line height adjusting device for adjusting the height of the bogie, a plurality of rollers provided on the bogie do not have to be subjected to level adjustment for each roller. Roller level adjustment can be performed simultaneously. As a result, the run-out table for the hot rolling mill of the present invention can easily perform the level control of the rollers.

[0011]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a plan view showing a part of an example of a roller mount and an example of a mount moving device according to the present invention while omitting them. Elements having the same configurations as those of the conventional technique (see FIG. 5) are designated by the same reference numerals.

The roller mount 6 has a plurality of rollers 1 on its upper surface and a drive motor 2 for driving the rollers 1.
And a lower header 5 extending between the rollers 1 and 1,
Wheels 13 (see FIG. 2) are provided on the lower surface thereof. The roller mount 6 has a worm jack contact surface 11 that contacts the upper end of the adjusting worm jack 10 (see FIG. 2), and a lower header 5 when the roller mount is taken out from a pass line (not shown). Of the cooling water pipe (not shown).

As shown in FIG. 1, in the roller mount 6, the wheels 13 of the roller mount 6 are placed on the mount travel rail 8 (see FIG. 2) and are locked by the hooks 7a of the mount moving device 7. There is. FIG. 2 is a sectional view of a runout table for a hot rolling mill according to an example of the present invention. This roller mount 6
The adjustment worm jack 10 is installed on the gantry traveling rail 8 and locked by the hook 7 a of the gantry moving device 7, and below the roller gantry 6. Also, the roller mount 6
An upper header 4 for injecting cooling water onto a steel plate (not shown) is provided above the roller 1.

As shown in FIG. 2, when the rollers 1 and the like are replaced, the upper end of the adjusting worm jack 10 is separated from the worm jack contact surface 11, and the lower header 5 is separated from the cooling water pipe by the automatic pipe attaching / detaching device 9. The gantry moving device 7 moves the roller gantry 6 to the left side in FIG. At the time of this movement, a power supply line (not shown) for supplying power to the drive motor 2 is automatically disconnected as in the automatic pipe attaching / detaching device 9.

FIG. 3 is a diagram when the roller mount of an example according to the present invention is replaced. Hook 7a of gantry moving device 7
Is separated from the roller mount 6, a wire is provided on the roller mount 6, and the wire is lifted by a hook of a crane (not shown) to move the roller mount 6 to another place. Thereafter, a new roller mount (not shown) provided with new rollers and the like is hung by the crane in the state shown in FIG. 3, and this new roller mount (hereinafter referred to as “roller mount 6”) is mounted. A pass line (not shown) is installed by the moving device 7 in the state shown in FIG. At the time of this installation, the lower header 5 and the cooling water pipe (not shown) are automatically connected by the automatic pipe attaching / detaching device 9, and the drive motor 2
A power supply line (not shown) for supplying power to the device is also automatically connected.

FIG. 4 is a conceptual view showing a part of the roller mount according to the present invention when the level is adjusted by the roller level adjusting device. The roller mount 6 installed on the pass line has a worm jack contact surface 11 provided on the lower surface thereof abutting against the upper end of the adjusting worm jack 10, and a rattling killing cylinder 12 is fixed.

As shown in FIG. 4, when the adjusting worm jack 10 is moved up and down, the roller mount 6 is adjusted in level between the roller mount 6 and the roller mounts before and after the roller mount 6. After that, the roller mount 6 is rattled and pulled downward by the cylinder 12, so that the roller mount 6 and the adjustment worm jack 10 are fixed and the roller mount 6 is fixed.

In this embodiment, the gantry moving device 7 is used to move the roller pedestal 6, but the roller pedestal 6 may be provided with a driving device so that the roller pedestal 6 is self-propelled. Although each of them has its own drive motor, one motor may be provided in the roller mount 6, and the plurality of rollers 1 may be driven by the one motor to distribute the gears to reduce the facility cost. Further, since the work space around the pass line is small, it is preferable to use a crane or the like to replace the roller mount 6 to improve its workability. further,
In order to make the roller mount 6 more stable, it is also preferable to provide a backlash killing cylinder 12.

[0019]

As described above, in the run-out table for hot rolling mills of the present invention, since the carriage provided with the rollers is moved by the carriage moving device to replace the rollers,
It is not necessary to remove the upper header, the lower header, and the rollers, so that the rollers can be replaced quickly and accurately, and a small number of people can perform them. Therefore, the productivity of the runout table for the hot rolling mill can be improved.

Further, in the run-out table for the hot rolling mill of the present invention, the level of a plurality of rollers provided on the carriage is adjusted simultaneously by the pass line height adjusting device, so that the level control of the rollers as a whole of the pass line is performed. Easy,
It is possible to reduce variations in the level of the rollers. For this reason, it is possible to improve the sheet passing property when the steel sheet passes the pass line, particularly when passing at a high speed.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a roller mount and an example of a mount moving device according to the present invention with some parts omitted.

FIG. 2 is a cross-sectional view of a runout table for a hot rolling mill according to an example of the present invention.

FIG. 3 is a diagram when a roller mount of an example according to the present invention is replaced.

FIG. 4 is a conceptual diagram showing a roller pedestal according to the present invention with a part thereof omitted when the level is adjusted by a roller level adjusting device.

FIG. 5 is a cross-sectional view (a) of the conventional run-out table for a hot rolling mill, and a side view (b) showing a part of the run-out table as viewed from the direction AA of (a).

[Explanation of symbols]

1 roller 2 drive motor 4 upper header 5 lower header 6 roller mount 7 mount moving device 10 adjustment worm jack 11 worm jack contact surface 12 backlash killing cylinder 13 wheels

Claims (2)

[Claims] 1. A trolley in which a plurality of rollers are mounted separately, each of which is movable outside the side line of the pass line,
A run-out table for a hot rolling mill, comprising: a pass line height adjusting device provided on the pass line for adjusting the height of the carriage. 2. The run-out table for a hot rolling mill according to claim 1, further comprising a removable carriage moving device.