JPS60196211A - Roll exchanging device for rolling mill - Google Patents

Abstract

PURPOSE:To change various rolls having different diameters of a 6-High Mill, etc. in a narrow space for short time by placing a traversing carriage carrying a roll assembly on a self-traveling carriage and transporting the roll assembly. CONSTITUTION:Fresh work rolls and fresh intermediate work rolls are mounted on a traversing carriage 13 and a self-traveling carriage 9 in a roll shop 8 and the carriages are moved to a roll exchanging position by a self-driving machine 10. The traversing carriage group 13 is traversed by traversing rails then the empty carriages 13 are traversed onto the carriage 9 and the carriage 13 carrying the fresh rolls is traversed on a foundation. A connecting and moving machine 12 is moved over the cariage 13 by a driving machine 11 for connecting and moving and is connected to the lower intermediate roll hook part 18 of a rolling mill 1 and to pull back the old roll group onto the carriage 13. The carriage 13 carrying the fresh rolls is traversed on the carriage 9 and the carriage 13 carrying the old rolls is traversed on the foundation by the driving device for traversing. The fresh roll group is inserted into the mill 1 and the carriage 13 carrying the old rolls is placed on the carriage 9 which is then returned to the shop 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a roll changing device for a rolling mill, particularly for a quadruple or right-handed rolling mill or for different types of rolling mills with various roll diameters. This invention relates to a roll changing device that can efficiently change rolls.

[Background of the invention]

Conventionally, in this type of bogie type changing equipment, the connected transverse bogies are moved laterally on a self-propelled bogie in order to exchange new rolls and old rolls, and then the rolling carriage is aligned with the rails on the bogies. The conventional method was to change the rolls by moving them along the rails within the machine body in the direction of the roll axis. Therefore, the width of the self-propelled cart is very large, as it requires the travel stroke of the traversing cart. As self-propelled carts become larger, they have to dig into the broken foundation surface by their width, which reduces the amount of scaffolding on the floor, which poses a problem for various operations. In addition, since there is a large difference in height between the work roll reuse rail and the lower reinforcing roll reassignment rail inside the rolling mill main body, a reassemble device dedicated to the work rolls is used for the work rolls, and a reassignment device dedicated to the work rolls is used for the reinforcing rolls. Since various recombining devices are required, such as one recombining device, the recombining time becomes long and the operating time of the rolling mill is shortened. .

[Purpose of the invention]

The object of the present invention is to use only one self-propelled cart, work rolls,
Reinforcing rolls, 6 sets In the rolling machine, the intermediate rolls are also briefly,
Another object of the present invention is to provide a roll changing device for a rolling mill that can change rolls in a short time.

[Summary of the invention]

The present invention divides a transverse truck that moves laterally into a plurality of parts,
By transporting the transverse cart loaded with the roll assembly to be transported on a self-propelled cart, the width of the self-propelled cart can be reduced to 1/3 of the conventional one, allowing rolling to be carried out in a small space without having to dig wide into the floor surface. It has a capacity of 5 to transport the roll assembly over a long distance from the location where it is extracted from the machine body to the roll shop. In addition, the track height of the self-propelled trolley is set at the same level as the rolling surface of the wheels for moving the lower reinforcing roll.
The second reinforcing roll is loaded on the traversing cart and the running cart, and the lower reinforcing roll is connected to the end of the self-propelled cart and pulled.
All roll assemblies, including work rolls, reinforcing rolls, and intermediate rolls in the case of a six-set rolling mill, can be rearranged and transported using one self-propelled cart.

[Embodiments of the invention]

A case will be described in which an embodiment of the present invention is applied to a six-set rolling mill.

In FIG. 1, FIG. 2, and FIG. 4, the six-set rolling mill 1 includes:
A pair of work rolls 2. A pair of intermediate rolls 3 contacting the outside (top and bottom) of each work roll 2;
A pair of reinforcing rolls 4A and 4B are provided which are in contact with each other (upper and lower), and during rolling operation, each roll is pivotally supported by the housing 20 of the rolling mill.

When replacing the rolls of a six-set rolling mill, normally, when only the work rolls are replaced, a pair of work rolls is replaced with the old and new ones, and the work rolls and intermediate rolls are replaced at the same time, or when only the intermediate rolls are replaced, these are replaced. The work roll and the intermediate roll are used as a cellar 1, and the new and old rolls are reassembled. In addition, it is common to replace the reinforcing rolls with the old and new ones as the top and at the same time as the cellar 1-, but in this embodiment, when the MAv of the work roll 2 and the intermediate roll 3 is The format is such that the old and new versions are recombined as a set.

In order to replace each roll with a new one, a recombination rail 5 for work rolls, an intermediate roll, and a recombination rail 6 for reinforcing rolls are installed in the rolling mill 1. The installed axle can be placed on it. At the front of the rolling mill 1 (fabric side in the drawing), a self-propelled truck rail 7 installed at the same level as the reinforcing roll recombination rail 6 is installed up to the roll shop 8, and a self-propelled F3 car 9 and lower reinforcement 1. Roll 4 is movable back and forth. I'm here.

On the self-propelled truck 9, a self-propelled drive machine 10. Connected moving drive machine 1
1 is mounted, and the self-propelled drive machine 1o moves the self-propelled trolley 9 between the end of the rolling mill and the roll shop 8. The work rolls 2. are moved on the trolley 13 and connected to the rolling mill J. The intermediate roll 3 is taken out, inserted, and mounted on the traversing truck 13. Here, the two traversing carts 13, ]3A and ], 3B, are arranged independently in parallel, and the traversing drive device 16 drives the traversing carts 13 so that the new roll and the old roll are replaced on the self-propelled cart 9. The structure is such that

These two traversing carts 13A.

13B, when the self-propelled cart 9 moves, one of the transverse carts is always mounted on the self-propelled cart 9 and moves together, and the other transverse cart remains at its current position.

Next, the configuration at the time of rearranging the reinforcing rolls will be explained. In Figure 3,
A lower reinforcing roll coupling machine 14 is equipped at the tip of the self-propelled cart (on the side of the rolling mill 1), so that the lower reinforcing rolls can be coupled when changing the lower reinforcing rolls. On the other hand, the method of rearranging the upper reinforcing roll 4A is as follows.
The upper reinforcing roll 4A is loaded on the upper reinforcing roll changing jig 15 in the rolling mill 1, and is removed, inserted, and traversed from the rolling mill 1 by the connecting moving machine 12 in the same way as for changing work rolls and intermediate rolls. The upper and lower reinforcing rolls 4A and 4B can be loaded onto a trolley 13, and the upper and lower reinforcing rolls 4A and 4B can be transported to the roll shop 8 by the self-propelled trolley 9.

First, a method of rearranging the old and new work rolls 2 and intermediate rolls 3 will be explained with reference to FIGS. 1, 2, and 4.

At the roll shop 8, a new work roll and a new intermediate roll are loaded on a traversing trolley 3 and a self-propelled trolley 9, and a self-propelled drive 10 moves them to the roll rearrangement position (on the right side of the rolling mill 1).
Move to. Here, the traversing drive device 16 causes the traversing carriage loaded with the new roll group and the traversing carriage T not loaded with anything to traverse on the traversing rail 17, and the traversing carriage loaded with nothing is made to move by itself. A traversing truck carrying a new roll group is made to traverse on the foundation. Next, the connecting moving machine 11 moves the connecting moving machine 12 to the transverse carriage 13-
The lower middle roll hook part 18 in the rolling mill 1 is moved.
Then, contrary to the above, the old roll group is pulled back onto the traversing truck 13 and loaded. Here again, the traverse drive device】6
As a result, the traversing truck loaded with the new roll group is caused to traverse the self-propelled truck 9'' and the traversing truck loaded with the old roll group is caused to traverse the self-propelled truck 9''. Then, the new roll group is inserted into the rolling mill 1 by the connecting transfer machine] 2, and the transverse carriage loaded with the remaining old rolls is placed on the self-propelled carriage 9, and when it returns to the roll shop 8, the working roll , the reclassification of the old and new intermediate roles is completed. Next, referring to FIG. 3, a procedure for replacing the old and new upper and lower reinforcing rolls 4Δ and 4B will be explained. The upper reinforcing roll recombination jig 15 is loaded onto the self-propelled cart 9'' which is waiting at the position of the roll shop 8, and is moved to the roll recombination position (to the right of the rolling mill 1). ''The second reinforcing roll rearranging jig 15 is equipped with an axle similar to the lower intermediate roll axle and a connecting hook J9, so it can be used with the connecting moving device 12 in the same way as when recombining the work roll and intermediate roll. , it is possible to take out and insert into the rolling mill 1. Inside the rolling mill j, the upper reinforcing roll is placed on the upper reinforcing roll changing jig 15 and pulled out onto the self-propelled cart 9 again. Then, these two old rolls are moved to the roll shop 8 by the self-propelled trolley 9, where they are replaced with the new rolls on the turrene, and the self-propelled trolley 9 is moved to the roll change position again. , and install it in the rolling mill 1 in the opposite manner to the above, completing the replacement of old and new reinforcing rolls.

According to this embodiment, the self-propelled platform can move from the rolling mill section to the roll shop with the rolls placed on the trolley.
Roll reloading work in the narrow space around the rolling mill can be omitted, and work can be done more efficiently in the wide space of the roll shop.

In addition, when replacing the reinforcing rolls, the second reinforcing roll is placed on top of the self-propelled cart and the lower reinforcing roll is towed, which prevents the JE axle from slipping due to too little load being applied to the axle of the self-propelled cart. This has the effect of preventing this problem and making it possible for the trolley to run stably.

〔Effect of the invention〕

According to the present invention, with only one self-propelled cart, the work roll,
For reinforcing rolls and water turbine rolling mills, it is possible to obtain a roll changing device for a rolling mill in which the intermediate roll is simple and the rolls can be changed in a short time.

[Brief explanation of the drawing]

Figures 1 and 3 are longitudinal sectional views of the entire roll changing device;
The figure is a plan view of FIG. 1, and FIG. 4 is a view taken along the line IV-rV in FIG.

Claims (1)

[Scope of Claims] ■. Roll rearrangement of a rolling mill equipped with a self-propelled carriage that runs on a track and a transverse carriage that enables the roll group to be moved in a horizontal direction perpendicular to the roll axis direction during roll rearrangement. A roll changing device for a rolling mill, characterized in that a plurality of said traversing carts loaded with rolls to be transported for roll changing are placed on said self-propelled cart and transported once. 2. The roll changing device for a rolling mill according to claim 1, wherein the track for the self-propelled cart and the transfer surface of the lower reinforcing roll movement shaft are on the same level. 3. In claim 1, when recombining the upper and lower reinforcing rolls, the upper reinforcing roll is loaded on the transverse truck and the traveling truck, and the lower reinforcing roll is connected to an end of the traveling truck and pulled. , a roll changing device for a rolling mill, characterized in that it transports rolls. 4. Claims 1 or 2 provide that, when changing the rolls of a right-hand rolling mill, the track for the self-propelled trolley and the transfer surface of the wheels for moving the downward force rolls are on the same level. A featured rolling mill roll changing device.