JPS6325842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical rolling mill, and more particularly to a vertical rolling mill equipped with a roll caliber adjusting device.

Vertical rolling mills used in billet and wire rolling facilities are equipped with a device for moving the vertical rolling rolls in the axial direction to adjust the roll caliber; for example, a vertical rolling mill as shown in FIG. 1 is known.

In the illustrated rolling mill, an inner housing 3 incorporating vertical rolls 1 and 2 is housed in an outer housing 4, and a roll caliber adjustment lever 5, adjustment screws, etc. are installed in the upper part of the inner housing. In this rolling mill, the rolls are changed by moving the driving side vertical roll 1 and the operating side vertical roll 2 to the inner housing 3.
At the same time, it is pulled out and carried out using a roll shop or the like, and at this time, the roll caliber and roll guide are adjusted and then assembled into the outer housing 4 again.

However, once assembled into the outer housing, the roll caliber adjustment lever 5 and the like are located at a location where the operator cannot operate them from the floor FL on the operation side of the rolling mill, as shown in the figure. It is possible to move the rolls 1 and 2 vertically together with the inner housing 3, but in actual rolling work, even if the roll shop is adjusted, it is necessary to correct the bends and twists that occur in the rolled material. vertical roll 1
and 2 must be adjusted independently in the axial direction, and in a rolling mill with such a configuration, it is extremely difficult to adjust the roll caliber. Recently, rolling mills having automatically adjusted roll guides have also been used, and in such cases, it is particularly desirable to be able to easily adjust the roll caliber during rolling in accordance with the adjustment of the roll guides.

SUMMARY OF THE INVENTION In view of the problems of the prior art, it is an object of the present invention to propose a vertical rolling mill in which a roll caliber adjustment device can be easily operated even during rolling.

The present invention provides a vertical rolling mill equipped with drive-side and operation-side vertical rolls having roll calibers for processing rolled material, and a caliber adjustment device for moving these vertical rolls in the roll axis direction. A rotating member is provided which rotationally engages with each bearing of the vertical roll and moves each bearing in the roll axis direction, and a rotating shaft integrally provided with each of these rotating members is attached to the outer housing of the rolling mill. It is characterized in that each of the rotary shafts extends toward the operating side, and an operating member for adjusting the roll caliber is provided at the extending end of each rotation shaft on the operating side.

An embodiment of the present invention will be described in detail below based on the drawings.

In FIGS. 2 and 3 showing the front and operation side views of the vertical rolling mill according to the present invention, an inner housing 9 incorporating vertical rolls 7 and 8 on the drive side and the operation side is housed in the outer housing 10. Each of these rolls 7 and 8 is driven by a roll drive device 11 via a roll drive shaft 12, and these rolls are integrated with an inner housing 10 and are connected to a lifting reducer 14 and a lifting reducer 14 via a hanging beam 13. It is configured to be moved in the axial direction (vertical direction) by a cylinder 15.
In addition, in the figure, 16 is a roll caliber, 17 is a roll guide, and 129a and 29b are nuts for adjusting the roll caliber, which will be described later.

As described above, the basic configuration of the rolling mill is almost the same as that of a conventional vertical rolling mill, and when changing the dimensions of the roll caliber or making adjustments due to wear, the vertical rolls 7 and 8 are assembled into the inner housing 9, and then the roll 7 and 8 are assembled into the inner housing 9. 8 are integrally moved in the vertical direction by the cylinder 15 to adjust the position of the roll caliber 16 to the center of rolling. In addition, when changing the rolls, the rolls 7 and 8 are pulled out together with the inner housing 9 from the changing device (not shown) and the outer housing 10, and after the old and new rolls are changed in the roll shop, the roll caliber is adjusted.

Here, in the roll caliber adjustment device of this embodiment, a case in which vertical rolls are adjusted independently in the vertical direction will be described in detail. The roll bearing portions 20 at the upper ends of the vertical rolls 7 on the driving side and the vertical rolls 8 on the operating side are rotatably engaged with the lower surfaces of their flange portions, as shown in FIGS. 3 and 4. A pair of levers 21 and 22 are provided, respectively. The lever 21 is fixed to the solid shaft 23 by fixing means such as a key, and the lever 22 is fixed to the hollow shaft 24 by shrink fitting or integral molding. Each pair of solid shaft 23 and hollow shaft 24
is extended to the operation side of the outer housing 10 of the rolling mill, and is attached to the inner housing 9 via a bearing 30 to support the load of the rolls 7 and 8. A pair of rotating levers 25 and 26 are attached to the extending ends of the solid shaft 23 and the hollow shaft 24, respectively, which rotate integrally with the levers 21 and 22, respectively. The free ends of the pair of levers 26 are connected via left and right screws 27a, 27b, 28a, 28b and lever adjusting nuts 29a, 29b, respectively.

On the other hand, the protruding parts of levers 31 and 32 for preventing the rolls from rising face the upper surfaces of the flanges of the roll bearings 20 of the rolls 7 and 8, respectively. The solid shaft 23 and the hollow shaft 24 at the lower end
The lever 2 is rotatably attached to the lever 2 at its upper end via a bolt 33 and a nut 34.
5 and 26 are pivotally supported by pins 35.

In such an embodiment, when the vertical rolls 7 and 8 try to rise in the direction of arrow A in FIG. 5 due to the thrust load during rolling, the roll bearing portion 20
The flanges push up the protrusions of the levers 31 and 32, thereby attempting to rotate the levers 21 and 22 in the direction of arrow A in FIG. 5 via the levers 31 and 32 and the bolt 33. However, lever 21
The left and right threads 27a, 27b are connected between each pair of levers 25 and 26, which are connected to the extending ends of the solid shaft 23 and the hollow shaft 24, respectively, which are integrally molded with the solid shaft 23 and the hollow shaft 24.
and 28a, 28b are fixed by caliber adjustment nuts 29a, 29b, the rotation of the levers 31 and 32 is stopped, thus preventing the rolls 7 and 8 from rising in the axial direction. .

In the roll shop, when removing the rolls 7 and 8 from the inner housing 9 when changing the rolls, loosen the nut 34 and tilt the bolt 33 around the pin 35 to the imaginary line position in FIG. 32 is rotated around the solid shaft 23 and the hollow shaft 24 to the position indicated by the dashed dot line in the figure, and removed from the upper surface of the flange of the roll bearing portion 20, thereby attaching and removing the roll.

If the newly reassembled roll 7 is moved up and down with respect to the roll 8 to perform caliber adjustment, the caliber adjustment nut 29a is rotated.
Each pair of levers 25 and solid shaft 23 rotate in the direction of arrow A or B in FIG. 6, and the lever 21, bolt 33, and lever 37 fixed to the solid shaft rotate in the direction of arrow A or B in FIG. and therefore roll 7
is moved up and down in the direction of arrow A or B in FIG. 5 to perform caliber adjustment.

The adjusted roll 7 is attached to the inner housing 9
At this time, the solid shaft and the hollow shaft 24 protrude toward the operation side of the rolling mill as shown in FIGS. 2 and 3, and the caliber adjustment provided at their ends nuts 29a, 29
b is located at a position on the floor FL that can be operated by the worker. Therefore, if the rolled material becomes twisted, bent, or irregularly shaped during rolling after the rolls are installed, and the roll caliber needs to be adjusted again,
While the rolling operation is in progress, a worker uses an appropriate tool from the operating side of the rolling mill to rotate either one of the caliber adjustment nuts 29a, 29b to move one of the vertical rolls up and down to adjust and correct the caliber. .

As described above, in this embodiment, the levers 21 and 22 are rotatably engaged with the lower surfaces of the flanges of the roll bearings 20 of the vertical rolls 7 and 8 of the vertical rolling mill in a direction to move these rolls in the axial direction. A solid shaft 23 and a hollow shaft 24, which rotate together with the levers 21 and 22, extend toward the operation side of the rolling mill, and a lever 25, Since the caliber adjustment nuts 29a and 29b are provided through the rollers 26, even when the rolls 7 and 8 are installed in the rolling mill and are in the rolling state, a worker can easily adjust them from the floor on the operation side of the rolling mill. Caliber adjustment can be performed by rotating the nuts 29a and 29b. Particularly in rolling mills in which the roll guide is automatically adjusted, the roll caliber can be easily adjusted in accordance with the adjustment of the roll guide, so automation of roll guide adjustment becomes even more meaningful. Furthermore, in this embodiment, the shafts extending from the rolls 7 and 8 on the drive side and the operation side have a double structure consisting of a concentric solid shaft 23 and a hollow shaft 24, so that the arrangement and structure are extremely simple. can do. Furthermore, since the rotation of the levers 31 and 32, which lock the rolls 7 and 8 from thrusting up due to thrust loads, is regulated by adjustment members such as lever adjustment nuts 29a and 29b, the rolls can be pushed up reliably. This can be prevented, and even if any misalignment occurs due to this impact repeatedly applied during rolling, most of the misalignment can be corrected simply by adjusting the adjusting nuts 29a, 29b, etc.

As described above, according to the present invention, it is possible to easily adjust the roll caliber of a vertical rolling mill even in the rolling state.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional vertical rolling mill, Fig. 2 is a front view of an embodiment of the present invention, Fig. 3 is a side view of the operating side of the embodiment of the present invention, and Fig. 4 is a part of the embodiment of the present invention. 5 is a cross-sectional view, FIG. 5 is a view taken along the - arrow in FIG. 4, and FIG. 6 is a partially enlarged view of the embodiment of the present invention shown in FIG. 3. 7, 8... Vertical roll, 9... Inner housing, 1
6... Roll caliber, 20... Roll bearing section, 21,
22... Lever, 23... Solid shaft, 24... Hollow shaft, 2
5, 26...lever, 29a, 29b...caliber adjustment nut, 31, 32...lever.

Claims (1)

[Claims] 1. In a vertical rolling mill equipped with drive-side and operation-side vertical rolls having roll calibers for processing rolled material, and a caliber adjustment device for moving these vertical rolls in the roll axis direction, the drive-side and operation-side vertical rolls are A lever is provided that engages with each bearing portion of the roll and moves each bearing portion independently in the roll axis direction, and a rotating shaft to which the lever is fixed is extended to the operation side of the outer housing of the rolling mill. let me,
A vertical rolling mill characterized in that operating members for adjusting the roll caliber are provided at the extending ends of the rotating shafts on the operating side.