JPH07202B2 - Rolling mill - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rolling mill, and particularly to a stand traveling rail on which the rolling stand itself travels when a rolling mill stand is reassembled and a roll assembly of the rolling mill is reassembled. It relates to the installation position of the roll changing rail that travels from time to time.

[Conventional technology]

In order to efficiently roll a wide variety of rolled materials, the rolling machine for exchanging the shaped steel may be replaced with a roll used for rolling according to the type and size of the rolling machine, or For example, there is a so-called stand changing system in which the rolling mill itself is moved and removed and replaced with another rolling mill as shown in Japanese Utility Model Laid-Open No. 50-78736.

That is, the conventional rolling mill has a structure as shown in FIG. In the figure, a wheel 2 is attached to a lower portion of a mill stand 1, and a rail 3 is attached to a foundation.
During rolling, the stand 1 is firmly fixed to the sole plate 4 by the clamp 5. When exchanging the stand, the rail 3 is raised by about 10 mm, and a Gap is provided between the stand 1 and the sole plate 4 so that the stand 1 can easily travel. Inside the stand 1, there are roll chucks 6 and 7, and FIG. 2 shows a state in which the rolls are reassembled. Therefore, the upper and lower chucks 6 and 7 are held on the rail 8 via the rod 9 and the wheels 10. In this state, the rolls are taken out by the pulling device on the operating side and then replaced with the new roll chucks 11 and 12.

As described above, in the conventional rolling mill, the roll changing device has a very complicated structure in order to handle two types of changing.

[Problems to be solved by the invention]

As described above, in the conventional rolling mill, the stand changing rail 3 on which the mill stand travels and the roll changing rail 8 for changing rolls in the mill stand are completely at the level in the height direction. There is a difference. For this reason, roll and stand recombination equipment must be prepared with a way to handle this level difference. That is,
First, the roll in the mill stand 1 is moved to the left in Fig. 2 on the floor by the roll changing device equipped with the upper and lower chucks 11 and 12, and the rolls in the mill stand 1 are inserted and pulled out to change the rolls. Return the device to its original position. Next, a part of the floor surface is removed by some method, and a trolley (not shown) for moving the mill stand 1 is run on the stand reassembling rail 3 to move the mill stand 1 to the wheels 2 in the surface direction of FIG.
Use to move on the stand rearrangement rail 3.

As described above, since there is a level difference between the stand traveling rail and the roll exchanging rail for exchanging rolls, there is a drawback that the exchanging device becomes complicated.

[Object of the Invention]

An object of the present invention is to provide a rolling mill capable of pulling up and down the inside of the stand and pulling out the stand with one carriage.

[Means for solving problems]

According to the present invention, the height of a rail for a roll assembly of a rolling mill to travel when changing rolls and the height of a running rail on which the stand itself travels when changing the stand are set to the same level, and as a result, a roll changing device. I made it simple.

〔Example〕

 Examples of the present invention will be described below.

FIG. 1 shows an embodiment of the present invention.

In the figure, the same reference numerals as in the conventional example shown in FIG. 2 represent the same parts. This embodiment is different from the conventional example shown in FIG.
, And the roll changing rails 8 are on the same horizontal plane, that is, the heights of the two wheel traveling surfaces are matched.

Since it is configured in this way, first, run a dolly (not shown) on the rail for stand replacement,
It is connected to the rolls housed in the upper and lower chucks 6 and 7 in the mill stand 1. Next, pull out the dolly to the front side of the paper in Fig. 1. Then, the upper and lower chucks 6 and 9 travel on the roll reassembling rail 8 by means of wheels 10 provided on the rod 9 and move on the movable floor surface (illustrated in the figure) laid between the two stand reassembling rails 3. Not run) and placed on top. Still further, when the truck is pulled, the upper and lower chucks 6 and 9 are configured to engage with the floor surface at the rear ends of the upper and lower chucks 6 and 9 after the floor and floor surfaces are completely fitted to the floor surface. The surfaces begin to move at the same time and the floor is removed. This roll is exchanged for another by a crane or the like.

After the floor surface is marked in this way, only the truck travels again to the mill stand 1 and is then connected to the mill stand 1 to travel the truck in the same manner as described above. Then, the mill stand 1 travels by means of the wheels 2 on the same stand replacement rail 3 as the rail on which the dolly is traveling, and the sole plate 4 is moved.
Leave more. This stand is replaced with another stand by a crane or the like.

〔The invention's effect〕

As described above, according to the present invention, since there is no level difference between the rails, the mill front operation side floor surface can be made flat, so that the safety in mill operation is improved.

Further, according to the present invention, the stand withdrawing device can run on the stand reassembling rail, and with this device, the upper and lower chucks in the stand can also be withdrawn.

That is, it is possible to eliminate the need for a separate trolley that responds to the level difference as in the related art.

Further, according to the present invention, since another carriage for replacing the stand is unnecessary, the reassembling device can be simplified.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is an overall configuration diagram of a conventional rolling mill. 1 ... Mill stand, 2 ... Wheels, 3 ... Stand replacement rail, 4 ... Sole plate, 5 ... Clamp, 6 ...
… Upper tie, 7 …… Lower tie, 8 …… Roll rearrangement rails, 9 …… Rod, 10 …… Wheels, 11 …… Upper tie,
12 …… Lower Chiyotsuku.

Claims (1)

[Claims] 1. A rolling mill comprising a stand traveling rail on which the rolling mill stand itself travels when the rolling mill stand is reassembled, and a roll reassembling rail on which a roll assembly of the rolling mill travels when the roll is reassembled. A rolling mill characterized in that the installation position of the stand traveling rail and the installation position of the roll changing rail are on the same horizontal plane.