JPH055206U - Caliber changer for vertical rolling mill - Google Patents

Abstract

(57) [Summary] [Purpose] To change the hole type roll of a vertical rolling mill with a simple device. [Structure] A vertical roll 2 having two hole types X and Y is driven by a spindle 10 suspended from the ceiling side, a universal joint 9, and the like, and the vertical roll 2 is It is supported by a box-shaped rolling housing 4. The rolling housing 4 is lifted by three hydraulic cylinders 14 and supported by four legs 11. The lower surfaces of these leg portions 11 are placed on the sole plate 15, and one hole type X can be used in that state. In addition, the pad 20 is provided between the lower surface of the leg 11 and the sole plate 15.
Since the ram piston 22 serving as B can be inserted and another hole type Y can be used, the combination of the hole types X and Y can be easily performed.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a caliber changing device in a vertical rolling mill.

[0002]

[Prior art and its problems]

 As is well known, hole-type rolls used for slab rolling equipment, billet rolling equipment, wire rod rolling equipment, etc. are not related to the roll usage limit, but can be changed by changing the rolling size or steel type. Although rolls are exchanged, if there are multiple types of holes (also called grooves or calibers) in the same roll, move the roll in the axial direction to perform hole replacement work ( Carriage change).

An outline of the caliber change in the vertical rolling mill will be described. A plurality of caliber types are provided in a pair of vertical rolls driven via a universal joint and a spindle hung from above. In order to select and use this caliber, the vertical roll is moved up and down together with the housing by the worm jack (for example, Japanese Utility Model Publication No. 56-13041, Japanese Patent Publication No. 58-41122, etc.). reference).

More specifically, for example, a box-shaped rolling housing supporting a pair of vertical rolls is fixed to a sub head arranged in the vertical direction, and this sub head is formed on an upright pillar. The guide rail is slidably fitted in the vertical direction, and the subhead is moved up and down by a worm jack driven by a motor.

However, in a rolling mill using a worm jack to elevate and lower the vertical roll, although it is convenient in the case of the vertical roll having many calibers, it is easy to use only two calibers. In the vertical type roll, there was a problem that the guide rail and the like were over-equiped, and the operation and maintenance were troublesome, and the equipment cost was high.

[0006]

[Means for Solving the Problems] Therefore, the present invention has been devised to solve the above-mentioned problems, and its gist is to provide a universal joint and a spindle suspended from above. A pair of vertical rolls, which are driven by means of two calibers, are attached to a rolling housing that has legs and can be moved up and down by a hydraulic jack, and the legs are hydraulically clamped. A vertical rolling mill that can be fixed, characterized in that a fitting groove into which a ram piston of a hydraulic clamp is fitted is formed in the leg portion in correspondence with the interval of the caliber. It is in the Caliber change device.

[0007]

【Example】

 The structure of the present invention, together with its operation, will be described in detail by the embodiments shown in the accompanying drawings. FIG. 1 is an overall external view of an embodiment of the present invention, FIG. 2 is an external view as seen in the direction of arrow A in FIG. 1, FIG. 3 is a detailed view of the essential parts of FIG. 2, FIG. Is a main part view of the rail, and FIG. 6 is an operation explanatory view of FIG. The present embodiment is suitable for a wire rod / bar steel rolling machine, and is particularly suitable for a vertical hole rolling machine in a rough row rolling machine in which a vertical rolling machine and a horizontal rolling machine are combined.

In these figures, 1 is a concrete structure, and a pair of vertical rolls 2 and 2 are arranged on one side thereof. These vertical rolls 2 are supported by a rolling housing 4 via bearings 3 at the upper and lower ends thereof. The vertical roll 2 is formed with two calibers X and Y as shown in FIG. 4, and the vertical roll 2 is arranged on the upper surface of the construct 1. It is adapted to be rotationally driven by a driving device 5 which is transmitted downward. The drive unit 5 includes a motor 6, a coupling 7, a speed reducer 8, upper and lower universal joints (also referred to as spindle couplings) 9, a spindle 10 and the like.

The above description is almost common to a normal vertical rolling mill, but the present embodiment is particularly configured as follows. That is, the rolling housing 4 is formed in a box shape in which a frame body is assembled, and four leg portions 11, 11 ... Are attached to the rolling housing 4 and are supported by the leg portions 11. In addition, housing supports 12 are respectively provided on the outer side surfaces of the rolling housing 4 (left and right in FIG. 2) and the side surface facing the building 1 (right side in FIG. 1) so as to project therefrom. The support 12 is supported by a hydraulic cylinder 14 provided upright on the foundation 13 so as to be liftable. Therefore, three hydraulic cylinders 14 are provided.

Further, a pair of sole plates 15 and 15 are laid on the base portion 13 in a direction orthogonal to the rolling line a, and this sole plate 15 is arranged on the rolling line a. It is extended to one side to form a rail. A traveling wheel 16 attached to the leg portion 11 is adapted to roll on the sole plate 15, and the sole plate 15 has a structure as shown in FIG. A sloping groove 15a is formed, and at that position, the traveling wheel 16 is fitted in this sloping groove 15a, and the lower surface of the leg portion 11 is slidable on the sole plate 15 instead. It is supposed to be listed in.

Fitting grooves 18A, 18B are formed on the outer surface of each of the leg portions 11 in upper and lower two steps corresponding to the intervals of the caliber, and these fitting grooves 18A, 18B are formed. The lower surface is formed with a downwardly inclined surface 18a from the inner side toward the outer side so that a Ram piston 22 to be described later can be fitted easily.

On the other hand, a mounting frame 19 is erected on the base portion 13 at a position facing each of the four leg portions 11, and these mounting frames 19 have an upper hydraulic clamp 20A and a lower hydraulic clamp 20A, respectively. The pads 20B are provided in the horizontal direction. These hydraulic clamps 20A and pads 20B are composed of a cylinder body 21 and a ram piston 22 fitted to the cylinder body 21, and the ram piston 22 is moved forward and backward by the operation of the cylinder body 21 which is the hydraulic clamp 20A. The fitting grooves 18A and 18B are fitted into and removed from the fitting grooves 18A and 18B. A fixed piston 22a is built in each of these ram pistons 22, and hydraulic pressure is supplied to both sides of the fixed piston 22a to reciprocate the ram piston 22. Further, the ram piston 22 serving as the pad 20B advances, and the leg portion 11 is placed on the upper side surface of the ram piston 22. Therefore, the lower surface of the leg portion 11 is formed into a flat surface that can be placed on the solution plate 15 and on the upper side surface of the ram piston 22 serving as the pad 20B. The leg portions 11 are connected to each other by a connecting member 23 parallel to the rolling line a, and one connecting member 23 is provided with a hook receiver 24. A hook 26a provided on a rod 26 of a traverse cylinder 25 orthogonal to the above is locked. Therefore, the rolling housing 4 is retracted from the rolling line a by the contraction operation of the traverse cylinder 25, and the old and new rolls can be exchanged. Further, by the extension operation of the traverse cylinder 25, the hook 26a of the rolling housing 4 pushes the connecting member 23 and is returned to the rolling line a.

Further, the spindle 10 is adapted to be gripped by a pair of spindle carriers 27 suspended from the building 1. That is, the vertical roll 2 and the spindle 10 are interlockingly connected through the universal joint 9, but when the rolling housing 4 is retracted from the rolling line a, the lower universal joint 9 is moved upward. Then, the rolling housing 4 is retracted by pushing it up to remove it from the roll shaft 2a. At that time, since the universal joint 9 and the spindle 10 are spline-fitted, the universal joint 9 may drop from the spindle 10 and the roll shaft 2a and the universal joint 9 below. When removing and, the lower universal joint 9 is held by the spindle carrier 27 in advance.

Next, the operation of the present embodiment will be described. With the spindle 10 and the universal joint 9 etc. held by the spindle carrier 26, the rolling housing 4 is retracted, and the roll is exchanged there. After that, the rolling housing 4 is pushed toward the rolling line a by the traverse cylinder 25. At that time, the traveling wheels 16 of the rolling housing 4 roll on the sole plate 15, but if they come near the end of the stroke of the traverse cylinder 25, the sloping groove 15a is formed in the sole plate 15. Is formed, the traveling wheel 16 fits into it, and the lower surface of the leg portion 11 is slid on the sole plate 15 instead. When the rolling housing 4 comes to the position of the rolling line a and stops, the hydraulic cylinder 14 expands and the piston rod end is brought into contact with the housing support 12, and the rolling housing 4 is lifted and the roll shaft 2a is lifted. After fitting the lower end of the versatal joint 9, the spindle carrier 26 is opened. As a result, the universal joint 9 extends under its own weight and fits on the roll shaft 2a. Next, when the hydraulic cylinder 14 is contracted and operated, the rolling housing 4 descends and the lower surface of the leg portion 11 is placed on the sole plate 15.

Therefore, in order to use the Caliber X, since the lower surface of the leg portion 11 is placed on the sole plate 15, the center line of the Caliber X coincides with the rolling line a. Then, in this state, the upper hydraulic clamp 20A is fitted into the fitting groove 18a to fix the rolling housing 4. To use the caliber Y, the hydraulic cylinder 14 is extended and the piston rod end is brought into contact with the housing support 12 so that the rolling housing 4 has a center line slightly above the rolling line a. Lift to the position. Therefore, when the lower pad 20B is expanded and then the hydraulic cylinder 14 is contracted, the lower surface of the leg 11 is placed on the ram piston 22 of the pad 20B, and the center line of the caliber Y coincides with the rolling line a. Therefore, the upper hydraulic clamp 20A is fitted into the lower fitting groove 18B to fix the rolling housing 4.

In the present embodiment, the leg portion 11 placed on the sole plate 15 or placed on the pad 20B is fixed by the hydraulic clamp 20A. The invention is not limited to this, and the pad 20B may be omitted and the leg portion 11 may be fixed only by the hydraulic clamp 20A. Further, in the above embodiment, the leg 11 is fixed from the outside by the hydraulic clamp 20A, but the present invention is not limited to this, and the leg 11 may be fixed from the inside.

[0017]

EFFECTS OF THE INVENTION According to the present invention, a ram piston of a hydraulic clamp is inserted into a leg portion of a rolling housing in correspondence with the interval of the caliber as a vertical roller recomposing device having two calibers. Since the mating grooves to be used are only formed in the upper and lower two stages, the vertical roll caliber can be performed with a simple mechanism, which is suitable for a simple vertical rolling mill. You can save money.

[Brief description of drawings]

FIG. 1 is an overall external view of an embodiment of the present invention.

FIG. 2 is an external view as viewed in the direction of arrow A in FIG.

FIG. 3 is a detailed view of a main part of FIG.

FIG. 4 is a main part view of a vertical roll.

FIG. 5 is a main part view of a rail.

6 is an operation explanatory view of FIG. 3. FIG.

[Explanation of symbols]

2 vertical rolls, 4 rolling housings, 9 universal joints, 10 spindles, 11 legs, 14 hydraulic cylinders, 15 sole plates, 18A, 18B
Mating groove, 20A hydraulic clamp, 20B pad, 22
Ram piston, X, Y caliber

Claims (1)

[Claims for utility model registration] Claims: 1. A pair of vertical rolls, which are driven via a universal joint and a spindle suspended from above, and which are equipped with two calibers, A vertical rolling mill that has a section and that can be attached to a rolling housing that can be moved up and down by a hydraulic jack, and that can fix the legs with a hydraulic clamp. A caliber changing device in a vertical rolling mill, characterized in that a fitting groove into which a ram piston of a hydraulic clamp is fitted is formed.