JPH01317608A - Work roll exchanger - Google Patents

Abstract

PURPOSE:To drastically reduce an equipment cost by providing one unit of porter car and one unit of side shift truck respectively movably back and forth between the side parts of a rolling mill. CONSTITUTION:After work rolls 1, 1 are drawn out of the rolling mill 3 by the porter car 18, the side shift truck 20 is moved along rails 19 and is so stopped as to be positioned under the work rolls 1, 1. A jig 16 of the car 18 is brought near to the work rolls 1, 1 and the work rolls are disconnected from the jig 16, then the car 18 is moved onto a turn table 11 and the work rolls 1, 1 are mounted on the side shift truck 20. The shift truck 20 is thereafter moved and is so stopped that the front surface carrying the fresh work rolls 1, 1 for changing is positioned on rails 7. The porter car 18 on the table 11 is moved to the rolling mill 3 side and the rolls 1, 1 on the truck 20 are held, then the truck 20 is moved to the end of the rails 19 where the exchanged rolls 1, 1 are removed from the truck 20 and the fresh rolls 1, 1 are mounted thereon.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a work roll changing device.

[Prior Art] Generally, the work rolls of a rolling mill are subject to severe wear, so it is necessary to perform a reassembly operation to replace them with new work rolls several times a day.

Conventionally, the above-mentioned work roll reshuffling work involved hooking a C-hook suspended from an overhead crane onto the shaft end of the work roll, and then pulling the work roll out of the rolling mill by moving the overhead crane in a direction perpendicular to the line direction. I was going there.

However, there are problems in that the work roll reshuffling using the above-mentioned overhead crane is dangerous and the work is time-consuming.

Therefore, in recent years, in order to make the work safer and faster, each rolling mill has been designed to be able to move in the axial direction of the work roll to the work side of the rolling mill, hold the work roll, and pull out and install the work roll. In addition to providing a porter car, a side shift cart capable of carrying a work roll pulled out by the porter car and carrying a new work roll for replacement is provided so as to be movable in the line direction. Automatic exchange is taking place.

[Problems to be Solved by the Invention] However, in the work roll changing device in which the porter car and side shift cart are provided for each rolling mill, when there are multiple rolling mills, the porter car and the side shift cart are There was a problem in that it required a large amount of money to install multiple units.

In view of the above-mentioned circumstances, the present invention provides a work roll rearrangement that enables the work rolls of all rolling mills to be rearranged using only one porter car and one side shift cart, thereby significantly reducing equipment costs. The purpose is to provide a device.

[Means for Solving the Problems] The present invention provides a single side shift cart capable of carrying work rolls pulled out from a plurality of rolling mills disposed in the line direction and carrying replacement work rolls for each rolling mill. A porter car is installed on the side of the machine so that it can reciprocate in the line direction, and also moves back and forth in a direction perpendicular to the line direction to pull out work rolls into the rolling mill. This relates to a work roll changing device that is provided so as to be able to reciprocate in the side line direction of each rolling mill at the position shown in FIG.

[Function] Therefore, in the present invention, one porter car and one side shift cart reciprocate in the line direction and are located at the side of the rolling mill, respectively, to rearrange the work rolls of each rolling mill.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are explanatory diagrams of an embodiment of the present invention.

A rolling mill 3.4.5 consisting of upper and lower work rolls 1.1, upper and lower backup rolls 2.2, etc. A plurality of Ei's (four in the figure) are arranged in the line direction.

A rail 7.8.9 extending in a direction perpendicular to the line direction (hereinafter referred to as width direction) on the working side of each of the rolling mills 3, 4.5.8.
．． 10, and a turntable 1 is installed at the opposite end of each rail 7.8.9.10 from the rolling mill 3.4.5.6.
1.12.13.14 are provided, and each turntable 11° and 12.13.14 are connected by a rail 15 in the line direction.

One porter car equipped with a pair of jigs te, te that can be fitted onto the shaft ends of the upper and lower work rolls 1.1 and that can approach and separate in the vertical direction, and is equipped with a self-propelled hydraulic unit 17. 18 on the turntable 11,
One porter car 18 has a turntable 11.12.
13.14 so that it can be moved freely on each rail 7°8.9.10.

A rail 19 extending in the line direction is laid at a position between the rolling mill 3.4.5.6 and the turntable 11.12.13.14 of the rail 7.8.9.10, and the rearrangement is carried out on the rail 19. One side shift cart 20 is mounted on which a new work roll l° for use can be loaded as well as an old work roll l that has been pulled out.

In addition, 21 is a roller, 22 is an axle box of work roll l, 23
24 is a hydraulic cylinder that rotates the support member 23; 25 is a turntable 1;
1 is a rotating shaft, 26 is a rail for rotating the turntable It, and 27 is a rail on the turntable 11.

Work rolls of rolling mill 3, 4, 5, 6! , 1, first contract the hydraulic cylinder 24 provided in the axle box 22 of the lower work roll l, raise the support member 23, integrate the lower work roll l and the upper work roll l, and then move the side shift trolley. 20 to the end position of the rail 19, where upper and lower work rolls l' and l' for rearrangement are mounted, and while the porter car 18 is stopped on the turntable 11, the porter car 18 is moved to the end position of the rail 19. Move along the rail 7 toward the rolling mill 3, and move the jigs te and te of the porter car 18.
are fitted onto the shaft ends of the work rolls 1.1, respectively, and the jig 1.
Jig 1B is created by separating 6.16 in the vertical direction.

Hold work roll 1.1 at 16, work roll 1
．． If you hold 1, move Porter car 18 to turntable 1
1, and the upper and lower work rolls 1.
1, and the porter car 18 is stopped at an appropriate position on the rail 7.

The work roll 1. is transferred from the rolling mill 3 by a porter car 18.
1, the side shift cart 20, which had been retracted to the end of the rail 19, is moved along the rail 19, and as shown in FIG. 1.1 below (i.e. rail 7
The work roll 1.1 is separated from the jigs 1B, 1B by bringing the jigs te and te of the porter car 18 close to each other, and the porter car 18 is moved onto the turntable 11 and moved up and down. The work roll 1.1 is mounted on the side shift truck 20.

Thereafter, the side shift truck 20 is moved to create a new work roll l° for rearranging the side shift truck 20.

The porter car 1 is stopped so that the upper surface loaded with lo is positioned on the rail 7 and is stopped on the turntable 11.
8 to the rolling mill 3 side and hold the work rolls l' and 1' on the side shift cart 20 as described above, move the side shift cart 20 from the top of the rail 7 to the end position of the rail 19, and move the side shift cart 20 to the end position of the rail 19. Remove the replaced work rolls 1.1 from the shift cart 20 and remove the new work rolls 1', l.
At the same time, the porter car 18 is moved towards the rolling mill 3, and a new work roll 1' for recombination is carried out.
, l' are installed in the rolling mill 3.

When the work rolls 1° and 1゛ for recombination are installed in the rolling mill 3, the work rolls t', t',
Separate the porter car 18 from the turntable ll
Move up, rotate the turntable 11 90@, and move the porter car 18 onto the adjacent turntable 12.

After that, repeat the exact same operation and roll mill 4.5.6 in order.
Rearrange the work rolls 1.1.

After completing the rearrangement of work rolls 1.1 for all rolling mills 3, 4, 5.6 in this way, Porter car 1
8 back to the turntable 11.

In this way, by using the turntables 11, 12, 13, 14, it is possible to rearrange the work rolls 1.1 of all rolling mills L4.5.6 with one porter car 18, and also with one side Shift cart 20 to all rolling mills 3
．． Since it is designed to be able to reciprocate in the direction of the side line of 4.5.6, equipment costs can be significantly reduced compared to the case where a side shift cart is provided for each rolling mill. be able to.

FIGS. 3 and 4 are explanatory diagrams of another embodiment of the present invention, in which one porter car 18 is installed at each rolling mill 3.4° 5. A rail 28 extending in the line direction for reciprocating in the side line direction of 6.
and a traverse truck 29 that moves along the rail 28
A porter car 18 is mounted on a traverse cart 29 and moved in the line direction.

Even in this case, the work rolls 1.1 of all the rolling mills 3, 4, 5, 6 can be rearranged using one porter car 18, and equipment costs can be similarly reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiments,
It goes without saying that the turntable and traverse cart may be provided with independent drive devices or may receive power from the porter car's hydraulic unit, and that various changes may be made without departing from the gist of the invention. be.

[Effects of the Invention] As described above, according to the work roll rearranging device of the present invention, one porter car and one side shift cart are each provided so as to be movable back and forth between the sides of the rolling mill. , various excellent effects such as a significant reduction in equipment costs can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the present invention, FIG. 2 is a view taken along the ■-■ arrow in FIG. 1, and FIG. 3 is an explanatory diagram of another embodiment of the present invention.
FIG. 4 is a view taken along the line IV-IV in FIG. 3. In the figure, 1.1' is a work roll, 3.4.5.8 is a rolling mill, and 7.8.9. IO, 15, 19, 27, and 28 are rails, 11, 12, 13, and 14 are turntables, 18 is a porter car, 20 is a side shift truck, and 29 is a traverse truck.

Claims (1)

[Claims] 1) One side shift cart capable of carrying work rolls pulled out from a plurality of rolling mills arranged in the line direction and also carrying replacement work rolls is provided so as to be reciprocatable in the line direction on the side of each rolling mill. At the same time, a porter car, which reciprocates in the direction perpendicular to the line direction and pulls out work rolls into the rolling mill, is installed on the side shift cart at a position on the opposite side of the rolling mill to the side line of each rolling mill. A work roll changing device characterized in that it is provided so as to be able to reciprocate in a direction.