JPS5834201B2 - Work roll chock rearrangement device in rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work roll chock changing device in a rolling mill.

Conventionally, in order to replace the work roll chocks in a rolling mill with new ones, the work rolls are placed on the roll stand using a crane, and then the chock is set with a new one.
Adjusting nuts After removing the adjusting ring, etc., the chock is hoisted up by a crane, pulled out manually, and then a new chock is manually pushed into the work roll using the crane again.

However, the frequency of replacing the chocks is quite high, and the overhead crane is dedicated each time, which interferes with other work using the overhead crane.

In addition, the weight of the chock is 1 to 1.5 tons, and the reassembly work requires 3 to 4 people including a crane operator.

From the above-mentioned viewpoints, the present invention provides a work to reassemble a roll chock that can be easily and quickly carried out by a small number of people, and which is capable of moving along the direction between the roll stands. It comprises a chock recombination truck and a chock traveling platform provided on the chock recombining truck, and the chock traveling platform is movable in a direction perpendicular to the traveling direction of the chock recombining truck, and It is capable of being raised and lowered relative to the chock recombination truck, and furthermore, a chock pedestal supported by a chock support base is provided on the chock travel base, and the chock support base is mounted on the chock travel base. The chock mount is attached to the chock support base so as to be adjustable in movement in the running direction of the chock recombinant truck by a horizontal spring, and the chock holder is attached to the chock support base so as to be adjustable in movement in the vertical direction by a vertical spring. It has the following characteristics.

This invention will be explained by way of examples and with drawings.

Fig. 1 is a cutaway plan view of the essential parts of the work roll chock rearranging device of this embodiment, Fig. 2 is a cutaway front view of the main parts, and Fig. 3 is a plan view showing the installation mode of the work roll chock rearranging device. , FIG. 4 is a side view of the same, and FIG. 5 is a front view of the chock carriage portion of the work roll chock rearranging device of this embodiment.
FIG. 6 is a plan view of the same, and FIG. 7 is a side view of the same.

In the figure, 1 is a chock recombination truck.

The chock recombinant truck 1 is configured to freely run on wheels 13 on rails 3 laid between a large number of roll stands 2 while being powered by a cable 7.

The chock recombination carts 1 are provided one on each side of the roll mounting table 2, and each of them is provided with a hydraulic unit 4, an operation panel 5, a control panel 6, and the like.

Reference numeral 8 denotes a chock traveling platform, which is located in a moving path 9 formed along a direction perpendicular to the running direction of the chock changing truck 1 on the inner side of the central part (roll placement table 2 side) of the chock changing truck 1 in the traveling direction. It is provided.

A rail 10 is attached to the moving path 9, and the chock carriage 8 is moved along the rail 10 via wheels 14 by a cylinder 11 provided in the chock recombination carriage 1. .

As shown in FIGS. 5 to 7, the chock carriage 8 has a double structure in which the same wall 8' is vertically slidable with respect to the outer wall 8''. The rod tip of the cylinder 11 is fixed to the side of the body 8'', and the rod tip of a cylinder 12 whose main body is fixed to the outer wall 8'' is fixed vertically inside the inner wall 8'. .

Therefore, the inner wall 8' of the chock carriage 8 is movable up and down relative to the outer wall 8'' by the cylinder 12.

A chock holder 15 is attached to the upper surface of the inner wall 8' of the chock carriage 8 via a chock support 16.

The chock pedestal 15 is kept at a slight distance from the chock pedestal 16 by a large number of vertical springs 17 (indicated by l in FIG. 5).
It is mounted floating.

As a result, the chock holder 15 can move vertically against the vertical spring 17 relative to the chock support 16 by the distance of 1 minute.

However, the chock pedestal 15 and the chock support pedestal 16 are attached by bolts 18 so as not to move in the left-right direction.

The chock support stand 16 is movable via wheels 20 on a rail 19 attached to the upper surface of the inner wall 8' of the chock carriage 8 in the running direction of the chock replacement carriage 1.

A horizontal spring 21 is attached to the chock support base 16, and the chock support base 16 moves in the traveling direction of the chock recombination truck 1 against the force of the horizontal spring 19. .

Of course, the chock support base 16 is connected to the horizontal spring 21 in the traveling direction of the chock recombination vehicle 1 with respect to the chock traveling base 8.
It is installed so that it can move within the expansion and contraction range of , but not in the vertical direction.

A stopper 22 for inserting or extracting the chock is attached to the upper surface of the chock holder 15.

Since the chock recombination device of this embodiment is configured as described above, the chock recombination can be carried out as follows.

That is, first, as shown in FIG. 3, the chock replacement cart 1 is moved to the center position of the roll table 2 on which the old roll 23 is placed.

Next, the chock carriage 8 is moved by the cylinder 11 until the chock 24 is positioned between the stoppers 22 on the upper surface of the chock holder 15.

Then, the inner wall 8' of the chock carriage 8 is attached to the cylinder 1.
2, the chock pedestal 15 touches the bottom surface of the chock 24 and is raised until the vertical spring 17 is bent to the same extent as the weight of the chock 24.

Next, when the chock carriage 8 is moved backward by the cylinder 11, the stopper 22 moves between the old roll 23 and the chock 2.
Since the chock 2 is inserted into the gap 26 between the chock 2 and the
4 is pulled out from the old roll 23 as the chock carriage 8 moves backward.

On the other hand, when loading a chock onto the new roll 25, the chock replacement cart 1 is moved to the position of the roll mounting table 2 on which the new roll 25 is placed.

Then, the chock recombination truck 1 and the chock traveling platform 8 are adjusted to move so that the center positions of the new roll 25 and the chock placed on the chock pedestal 15 substantially coincide with each other by visual inspection.

Next, when the chock carriage 8 is advanced by the cylinder 11, the stopper 22 moves the chock to the new roll 25.
It is pushed into the shaft and can be used to charge chigotsuku.

When the chock is loaded into the new roll 25, even if the centers of the chock and the new roll 25 are slightly shifted in the left-right direction, they can be moved to some extent by the expansion and contraction action of the horizontal spring 21 in the chock support base 16.

Moreover, the shift of the center in the vertical direction can be followed to some extent by the expansion and contraction action of the vertical spring 17 provided on the chock holder 15.

In addition, if a piece 27 (see Fig. 5) is attached to the rear surface of the chock support base 16 (on the cylinder 11 side) and the chock on the chock support base 16 is bent forward, the chock support base 15 will be slightly bent when loading the chock. This makes it easier to follow vertical deviations caused by the roll placement table 2 side being lifted up.

As explained above, according to the present invention, chocks can be easily and quickly reassembled by a small number of people without using an overhead crane or the like. Even if the center is slightly off-center, charging can be easily performed, which is a useful effect.

[Brief explanation of the drawing]

FIG. 1 is a cutaway plan view of essential parts of a work roll chock rearranging device according to an embodiment of the present invention, FIG. 2 is a cutaway front view of the same essential parts, and FIG. 3 shows an installation mode of the same rearranging device. 4 is a side view of the same, FIG. 5 is a front view of the chock carriage portion of the work roll chock rearranging device of this embodiment, FIG. 6 is a plan view of the same, and FIG. It is the same side view. In the drawings, 1... chock recombination trolley, 2... roll mounting stand, 3...
...Rail, 4...Hydraulic unit, 5...Operation panel,
6...Control panel, 7...Cable, 8...Chock running platform, 9...Movement passage, 10...Rules, 11...
・Cylinder, 12...Cylinder, 13...Wheel, 1
4...Wheel, 15...Chock cradle, 16...Chock support pedestal, 17...Vertical spring, 18...Bolt,
19...Rules, 20...Wheels, 21...Side springs,
22...stopper, 23...old roll, 24...
Chock, 25...New roll, 26...Gap, 27
...Frame.

Claims (1)

[Claims] 1. A chock recombination truck capable of traveling along the roll spacing direction, and a chock traveling platform provided on the chock changing truck, wherein the chock traveling platform is orthogonal to the traveling direction of the chock recombining truck. The chock is movable in the direction, and is movable up and down with respect to the chock recombination carriage, and furthermore, a chock pedestal supported by a chock support pedestal is provided on the chock traveling platform, The chock support base is attached to the chock travel base by a horizontal spring so as to be adjustable in movement in the running direction of the chock recombination truck, and the chock support base is movable up and down relative to the chock support base by a vertical spring. 1. A work roll chock rearranging device in a rolling mill, characterized in that the work roll chock is installed so as to be adjustable in the direction.