JPS608885B2 - Work roll rearrangement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work roll changing device that saves labor and improves safety in rough changing work of work rolls in a multi-high rolling mill.

Steel manufacturing technology has made great progress in recent years, and multi-high rolling mills with excellent rolling performance are now used for materials that require high deformation resistance and thickness accuracy in the rolling process of steel plates.

Since the work rolls of this multi-high rolling mill must have extremely high precision, the work rolls must be replaced frequently, and especially in the case of bright products, each coil must be replaced once. However, in the past, the work of changing the work rolls of a multi-high rolling mill was done manually, and about five people were required for one silk change job. In other words, the work rolls of the multi-high rolling mill were pulled out and transported manually, and then new work rolls were transported and installed. Therefore, the work of reassigning the subordinates has disadvantages such as poor work efficiency, and also poor work safety due to slippery feet when the work place is covered with oil. The present invention eliminates such drawbacks, and provides a highly safe work roll rearranging device that saves labor by shortening the time required for conventional manual rearranging work.

More specifically, the present invention provides a movable support, a balance arm having an operation box provided at its tip via a bracket and rotatably attached to the support at its other end via another bracket, and the operation box. An upper roll receiver and a lower roll receiver are fixed to a base plate fixed to the lower part of the base plate and have a V-shaped receiving groove, and an upper roll receiver and a lower roll base are moved in the longitudinal direction of the base plate by a cylinder attached to the base plate. A clamp that clamps and fixes the work rolls to be stored on the roll receiver, and the board that is rotatably connected to a fulcrum of a frame that is fixed to a base that is fixed to the lower part of the operation box. and a cylinder attached to the base to allow the work roll to rotate 900 times from the vertical direction to the horizontal direction with the roll receiving side facing downward through a frame about the fulcrum. It is related to the device.
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a work roll rearranging device according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view of one embodiment of the work roll rearranging device according to the present invention, FIG. 2 is an enlarged rear view of the main part partially shown in cross section, and FIG. 3 is the same partially shown in cross section. The side view and FIG. 4 are explanatory diagrams showing the state of use of the device of the present invention. In the drawings, reference numeral 1 denotes a branch office, which is movable with wheels or the like and is installed on a sufficiently stable base (not shown).

2, an operation box 8 having an operation lever 9 is provided at the tip via a bracket 7, and the other end is connected to the bracket 3.
The balance arm 2 is rotatably attached to the support column 1 via a bracket 3, and the balance arm 2 is driven by a control motor 4 attached to a bracket 3.

Further, a V-shaped lifting lever 5 is rotatably attached to the upper part of the bracket 3, and a lifting wire 6 is attached to the tip of the lifting lever 5, and the entire device is connected via this lifting wire 6. It is preferable that the structure is such that it can be transported by a crane or the like. This lifting wire 6 may be fixed to the column 1 with a hook or the like so as not to interfere with the work when it is inconvenient. Reference numerals 11 and 12 are an upper roll receiver and a lower roll receiver fixed to the substrate 1 provided below the operation box 8, and the upper roll receiver 11 and the lower roll receiver 12 are used for rearranging work rolls. The substrate 10' is fixed at regular intervals by means such as welding so as not to interfere with Work roll
It has a structure that prevents it from falling.

Clamps 15 and 16 clamp and fix the work rolls X that are in contact with the receiving grooves of the upper roll receiver 11 and the lower roll receiver 12, respectively. The base plate 101 is installed below the operation box 8.
It has a structure that moves in the longitudinal direction.

Reference numeral 19 denotes a horizontal movement handle, which is provided at a desired position on the operation box 8 side for easy operation, mainly at the upper roll receiver 11 and the lower part.

This is for moving the wheel receiver 12 in the horizontal direction manually. Reference numeral 20 denotes a base fixed to the lower part of the operation box 8, and the board 10 is rotatably mounted around a fulcrum 22 provided on a frame 21 fixed to the base 20.

23 is two cylinders attached to both sides of the base 20; 24 is a frame with one end connected to the cylinder 23 side and the other end connected to the fulcrum 22; The substrate 10 connected through the frame 21 and the fulcrum 22 is configured to rotate 900 times from the vertical direction to the horizontal direction with the roll receiving side facing downward, centering on the fulcrum 22.

Next, a method of using the work roll reshuffling device according to the present invention having the above configuration will be explained.

First, after stopping the operation of the multi-high rolling mill, as shown in FIG. (hitting the roll) in the axial direction of the work roll x.

Next, the work roll changing device C according to the present invention with the substrate 10 in a vertical state is moved to the front of the multi-high rolling mill a, and the lower roll receiver 12 is moved to the work roll X (upper roll) pulled out from the multi-high rolling mill a. Adjust the height to suit. When the work roll X is pulled out by about half of its total length, it is placed on the receiving groove of the lower roll receiver 12. In addition, the lower roll receiver 1
2 can be adjusted by operating the operating lever 9. After the work roll
to lower the clamp 16 and lower the lower roll receiver 12.
The work roll X (upper roll) loaded on is fixed.
Next, the upper roll receiver 11 is adjusted to the position of the lower work roll X (lower roll) of the multi-high rolling mill a, and the work roll Press cylinder 1
3, the clamp 15 is lowered and the work roll x (
(lower roll). Thereafter, the work roll changing device C is moved to the roll lighthouse d, the cylinder 23 is activated, and the clamped work roll The substrate 10 is rotated 900 times around 22, and the substrate 1
After adjusting the height of 0 and placing the work roll Set up a battle. Next, the cylinders 13 and 14 are operated to sandwich the new work roll x on the roll bed d between the upper roll receiver 11 and the clamp 15 and the lower roll receiver 12 and the clamp 16, and then the substrate 10 is raised and the work roll Lift up the ×. After that, the cylinder 23 is activated and rotated 900 times around the fulcrum 22 to place the substrate 10 in a vertical position as shown in FIG. 1, and the work roll changing device c is moved again to the front of the multi-high rolling mill. Raise the clamps 15 and 16 to remove the upper roll receiver 11.
The work roll X layered on the lower roll receiver 12 is inserted as a lower roll, and the work roll X sent to the lower roll receiver 12 is sequentially inserted into the multi-high rolling mill a as an upper roll, and the door b is closed. When the reshuffling work is completed as described above, the work roll reshuffling device c is moved out of the way of the multi-high rolling mill a.
Move it to the side of the main operation panel e.

In this way, the apparatus of the present invention allows the cylinders 13, 14 for moving the clamps 15, 16, the upper roll receiver 11, the lower roll receiver 12, and the substrate 10 on which the clamps 15, 16 are provided to be moved from the vertical direction to the horizontal direction, or from the horizontal direction. It is possible to rotate 900 times perpendicularly from the direction, and it is possible to hold the work roll x on the roll tatami stand d from above, or to place the work roll Because of this structure, the roll spacing between the work rolls X placed on the roll layer stand d is sufficient to insert the upper roll receiver 11, the lower roll receiver 12, and the clamps 15 and 16, so the roll placement stand d can be small. Furthermore, since the substrate 10 is rotatable and its height can be adjusted, no human power is required to place the work roll x on the roll table d, so if the substrate 10 does not rotate, it can be set in multiple stages. Although two workers were required to place the material transported from the rolling mill onto the roll bed d, with the apparatus of the present invention, this can be done by only one operator.

As described in detail above, the work roll changing device according to the present invention effectively applies a balance arm, and can be manufactured at low cost and easily. By using the device of the present invention, it has excellent advantages such as being able to carry out recombination work efficiently and safely by one person, and also includes an upper roll receiver 11, a lower roll receiver 12, a clamp 15, which clamps the work roll X. 16
and a cylinder 13 for actuating the clamps 15, 16,
Since the substrate 10 on which the rollers 14 are provided can rotate 900 degrees, one operator is required to place the work roll It is extremely efficient and has excellent advantages such as requiring only a small roll bed, and has great industrial value.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the work roll rearranging device according to the present invention, FIG. 2 is an enlarged rear view of the main part partially shown in cross section, and FIG. 3 is the same partially shown in cross section. The side view and FIG. 4 are explanatory diagrams showing the state of use of the device of the present invention. 1... Prop, 2... Balance arm,
3...Fracket, 4...Control motor, 5...Lifting lever, 6...Lifting wire-
, 7... Bracket, 8... Operation box, 9
......Operation lever, 10...... Board, 11
...... Upper roll holder, 12... Lower roll holder, 13, 14... Cylinder, 15, 16...
Clamp, 17, 18... Clamp switch, 19...
...・Handle for horizontal movement, 20... Base, 21...
Frame, 22... Fulcrum, 23 """ Cylinder, 24
... Frame, X... Work roll, a... Multi-high rolling mill, b... Door, c... Work roll rearranging device
d...Roll layer stand, e...Main operation panel. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. A movable column 1, a balance arm 2 having an operation box 8 at its tip via a bracket 7 and the other end rotatably attached to the column 1 via a bracket 3; An upper roll receiver 11 and a lower roll receiver 12 each having a V-shaped receiving groove are fixed to a base plate 10 provided below the operation box 8, and cylinders 13 and 14 attached to the base plate 10 can be used in the longitudinal direction of the base plate 10. clamps 15 and 16 that clamp and fix the work rolls X that are moved and abut on the receiving grooves of the upper roll receiver 11 and the lower roll receiver 12; and a base 20 that is fixed to the lower part of the operation box 8. The substrate 10, which is rotatably connected to a fulcrum 22 of a frame 21 fixed to the substrate 10, is rotated 90 degrees horizontally from the vertical direction about the fulcrum 22 via the frame 24 with the roll receiving side facing downward. A work roll recombination device characterized in that it consists of a cylinder 23 attached to a base 20. 2. The work roll reshuffling device according to claim 1, wherein the operation box 8 is provided with an operation lever 9. 3. The work roll changing device according to claim 1 or 2, wherein the upper roll receiver 11 and the lower roll receiver 12 are fixed to the substrate 10 at a constant interval.