JPH0315206Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll shaft box device for a rolling mill.

[Prior art]

In recent years, rolling mills have been developed in which the work rolls can be shifted in the axial direction in order to eliminate step wear on the rolls and to better control the shape of the rolled material. In such a conventional shift rolling mill, as shown in FIG.
An arm d is provided on the axle box b supporting the housing c so as to protrude further outward in the roll axis direction,
The rod end of a shift cylinder f installed on a bracket e fixed to the housing c is engaged with the arm d, and the telescopic movement of the shift cylinder f moves the work roll a in the axial direction via the arm d and the axle box b. A common method is to shift the

Therefore, in the case of such a conventional shift rolling mill, the shift cylinder f and the bracket e supporting the shift cylinder f protrude around the housing c, which reduces space and handling workability. There was a problem with this.

[Purpose of invention]

The present invention is a rolling mill in which the rolls can be shifted in the axial direction, and the shift mechanism and associated parts are integrated into the shaft box so that they do not protrude around the housing, thereby reducing space and handling work. The purpose is to improve sexual performance.

[Structure of the idea]

The roll axle box device for a rolling mill of the present invention has a roll axle box removably installed inside the window of the housing, and a shifter equipped with guide blocks removably engaged with the housing inside both sides of the roll axle box. The mechanism is provided so as to be slidable in the direction of the roll axis, and by operating the shift mechanism, the roll can be shifted in the direction of the axis through sliding between the roll axle box and the shift mechanism.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 2 and 3, guide blocks 2, 2, which are thrust bearing members, are arranged on the inside of the window of the housing 1 so as to face each other in the line direction, and cannot be moved in the roll axis direction, but can be moved up and down. The guide blocks 2, 2 are removably attached, and the front and rear portions of the axle box 4 supporting the work roll 3 in the line direction are fitted from the outside so as to be slidable in the roll axis direction. A shift cylinder 5 is installed in each of the shift cylinders 2, and the rod 6 end of each shift cylinder 5 is connected to the barrel side end of the work roll 3 of the axle box 4, so that the axle box 4 and the shift cylinder 5 are connected to each other.
and guide blocks 2, 2 are integrated, and the work roll 3 is configured to be able to shift in the axial direction through the sliding movement of the guide blocks 2, 2 and the axle box 4 by the expansion and contraction movement of the rod 6 of the shift cylinder 5.

Now, from the state shown in the lower half of FIG. 3, the rod 6 of the shift cylinder 5 in each guide block 2,
When the shift cylinder 5 and the axle box 4 are slidably fitted together, as shown in the upper half of FIG.
is shifted in the axial direction.

In the above, the shift cylinders 5 are installed inside the guide blocks 2, 2, respectively, and the guide blocks 2, 2 are arranged inside the window of the housing 1, and hardly project outward from the housing 1. Therefore, the entire shift device requires less space. Furthermore, since the axle box 4 and the shift cylinder 5 are integrated, handling at the time of roll replacement is easy, and inspections such as checking the operation of the shift cylinder 5 can be performed outside the housing 1.

4 and 5 show another embodiment of the present invention, in which the axle box 4 is moved between the guide blocks 2 and 2 as the rod 6 of the shift cylinder 5 expands and contracts.
However, in this method, the axle box 4 is fitted so as to slide against the outer surface of the shift cylinder 5. Even in this case, the same effects as those of the embodiment described above can be achieved.

It should be noted that the present invention is not limited to the embodiments described above, and it goes without saying that various changes may be made without departing from the gist of the present invention.

[Effect of idea]

As explained above, according to the present invention, in a rolling mill in which the rolls can be shifted in the axial direction, the shift mechanism and associated parts are integrated into the roll shaft box, and the shift mechanism and associated parts are integrated into the roll shaft box, and Since it is constructed so that it does not protrude, space and handling workability can be improved, and the shift mechanism can be removed at the same time as roll replacement, making inspection easy.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing a roll shift device of a conventional rolling mill, Fig. 2 is a schematic perspective view showing a roll shaft box device of a rolling mill according to the present invention, and Fig. 3 is a partially cutaway plane of Fig. 2. In the figures, the upper half shows the state when the roll is shifted, and the lower half shows the state when the roll is not shifted. FIG. 4 is a schematic perspective view showing another embodiment of the present invention, and FIG. FIG. 4 is a partially cutaway plan view of FIG. 4, with the upper half showing the state during roll shift and the lower half showing the state during non-roll shift. 1 is a housing, 2 is a guide block, 3 is a work roll, 4 is an axle box, 5 is a shift cylinder, and 6 is a rod.

Claims (1)

[Scope of utility model registration request] A roll axle box is removably provided inside the window of the housing, and a shift mechanism equipped with a guide block that is removably engaged with the housing is provided inside both sides of the roll axle box so as to be slidable in the direction of the roll axis. A roll shaft box device for a rolling mill, characterized by: