JPS5927928Y2 - hydraulic mill - Google Patents

Description

[Detailed description of the invention] This invention improves the efficiency of roll changing work in a hydraulic mill in which a hydraulic reduction cylinder is interposed between an upper support roll shaft box and a reduction screw, by holding the hydraulic reduction cylinder in a housing. It is designed so that the following can be achieved.

For example, when performing roll rearrangement work in the hydraulic mill, the hydraulic reduction cylinder is placed on the upper back-up roll shaft box and taken out together with the upper back-up roll shaft box, or the hydraulic reduction cylinder is first taken out and then the back-up roll shaft box is removed. was taking it out.

Therefore, during roll rearrangement work, it is necessary to remove the upper support roll axle box and separate the hydraulic reduction cylinder while leaving the hydraulic reduction cylinder positioned on the upper support roll axle box, and this operation is troublesome and dangerous. Moreover, it requires a complicated dedicated take-out mechanism, and further requires a mechanism for preventing the hydraulic reduction cylinder from moving in the roll axis direction during rolling.

There were other inconveniences. The present invention relates to a hydraulic mill made in view of the above-mentioned circumstances, in which a hydraulic reduction cylinder is interposed between an upper support roll shaft box and a reduction screw. A groove is formed in the vertical direction in the housing, a guide block is attached to the housing in which a rod whose one end is inserted into the groove is slidably fitted, and a slide device is provided to slide the rod along the guide block. It is characterized by:

Embodiments of the present invention will be described with reference to the drawings.

An axle box 2 of an upper support roll 3 is built into the housing 1 so that it can be raised and lowered, and a lowering screw 4 for raising and lowering the axle box 2 is attached to the upper side of the housing 1. A hydraulic pressure reduction cylinder 5 is interposed between the box 2 and the box 2.

In addition, an appropriate number of grooves 6 (two in the drawing) are bored in the vertical direction on the inlet and outlet sides of the hydraulic pressure reduction cylinder 5 to a height greater than the lift of the axle box 2. A guide block 7 is provided on the side, and a rod 8 is slidably fitted into the guide block 7 so that one end of the rod 8 is inserted into the groove 6.
The other end of the rod 8 is connected to the tip of a piston rod of a sliding cylinder 9 provided in the housing 1, and the cylinder 9 allows the rod 8 to slide along the guide block 7.

In the figure, reference numeral 10 denotes a screw screwed into the guide block 7 to limit the movement range of the rod 8.

The slide cylinder 9 is always extended so that the rod 8 is inserted into the groove 6 of the hydraulic compression cylinder 5.

Rolling in such a state is convenient because the hydraulic reduction cylinder 5 also moves up and down along the rod 8 as the axle box 2 moves up and down, and movement of the hydraulic reduction cylinder 5 in the roll axis direction is prevented. When the axle box 2 is lowered during rearrangement, the ceiling of the groove 6 of the hydraulic reduction cylinder 5 hits the rod 8, and the hydraulic reduction cylinder 5 is suspended and held in the housing 1 via the rod 8, so only the axle box 2 needs to be removed. This makes it possible to improve the efficiency of roll changing work.

Furthermore, when the hydraulic pressure reduction cylinder 5 is to be removed, the slide cylinder 9 is retracted and the rod 8 is pulled out from the groove 6 of the hydraulic pressure reduction cylinder 5.

The present invention is not limited to the illustrated and described embodiments; for example, the rod 8 may be slid using a pinion rack mechanism instead of the sliding cylinder 9, or the hydraulic pressure reduction cylinder 5 may be replaced with a pinion rack mechanism. One or more grooves 6 are bored in the vertical direction on the entry side and the exit side, and a rod 8 is inserted into the grooves 6.
It goes without saying that it is optional to insert a .

As described above, according to the hydraulic mill of the present invention, the hydraulic reduction cylinder can be left in place when the rolls are rearranged, making it possible to eliminate the need for a mechanism to take out the hydraulic reduction cylinder, which can be used in mills that are not equipped with this mechanism. In addition to being able to use a hydraulic reduction cylinder, it also has excellent effects such as preventing the hydraulic reduction cylinder from moving in the roll axis direction during rolling, and the holding mechanism of the hydraulic reduction cylinder being simple and easy to assemble. do.

[Brief explanation of the drawing]

Figure 1 is an explanatory side view showing the mechanism of the hydraulic mill of the present invention. The left half shows the rolling process in progress, the right half shows the rolls being reassembled just before the upper backing roll is taken out, and Figure 2 shows the first part being rolled. Figure II
It is a directional view. 1...Housing, 2...Axle box, 3.
...Upper support roll, 4...Reduction screw, 5...Hydraulic pressure reduction cylinder, 6...
Groove, 7... Guide block, 8... Rod, 9... Slide cylinder.

Claims (1)

[Scope of utility model registration request] In a hydraulic mill in which a hydraulic reduction cylinder is interposed between an upper support roll shaft box and a reduction screw, grooves are formed in the vertical direction on the exit and entry sides of the hydraulic reduction cylinder, and one end is inserted into the groove. A hydraulic mill characterized in that a guide block into which a rod is slidably fitted is attached to a housing, and a slide device is provided to slide the rod along the guide block.