JPH04284903A - Horizontal rolling mill - Google Patents

Abstract

PURPOSE:To support a mill housing stably, to improve the rigidity of a housing support and to simplify the removal, reintegration of the mill housing. CONSTITUTION:The mill housings 1A, 1B wherein a pair of upper and lower mill rolls are supported respectively at both their ends and equipped rotatably and an interval between the rolls can be adjusted are equipped, mounting blocks 2 extending in the vertical direction through rocking shafts 3A, 3B are mounted on the respective side of one end of each mill housing 1A, 1B, these mounting blocks 2 are inserted from upper parts into facing parts (engaging grooves 12) of a pair of housing supports 9 erected on the mill bed 10 and pushed downward and fixed through housing clamp devices 15 at the upper parts of the housing supports 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal rolling mill in which mill rolls are supported on both sides of a mill housing, and more particularly to a horizontal rolling mill characterized by the mounting structure of the mill housing on the housing support.

0002

[Prior Art] Conventionally, a rolling mill that is directly connected to a continuous casting machine and rolls billets, etc. is a combination of a vertical rolling mill (hereinafter simply referred to as a V mill) and a horizontal rolling mill (hereinafter simply referred to as an H mill). -H continuous mills (V, H combination mills) are known.

The H mill in this V-H continuous mill has mill housings 1A and 1B mounted on a housing support 26 installed on a bed 10 as shown in FIGS. It is attached in a cantilevered state via the moving shafts 3A, 3B, and meshes with sector gears 4 formed in opposing parts of both mill housings 1A, 1B, and is installed in the middle part of each of these mill housings 1A, 1B. A pair of horizontal mill rolls 5A and 5B facing each other vertically across the material path line L are rotatably mounted, and a roll spacing adjustment device 8 (hydraulic cylinder) is installed between the ends of the mill housings 1A and 1B on the side opposite to the material path direction. It is being constructed.

0004

[Problem to be Solved by the Invention] When changing the rolling dimensions, it is necessary to move the mill rolls 5A and 5B to the mill housings 1A and 1B.
However, since the mill housings 1A, 1B, mill rolls 5A, 5B, etc. are cantilever-supported by the housing support 26 via the swing shafts 3A, 3B, the mill housings 1A, 1B are suspended by a crane while being replaced by the opposite housing support. 26 side and pull out the swing shafts 3A, 3B from the housing support 26 to remove the mill housings 1A, 1B from the housing support 26, and then attach the swing shafts 3A, 3B to the housing support 26 by reversing the above procedure. The mill housings 1A and 1B were reassembled into the housing support 26 by inserting the mill housings 1A and 1B into the housing support 26. At that time, the mill housings 1A and 1B are moved horizontally (
Since the swing shafts 3A and 3B are inserted into and removed from the housing support 26 by horizontal movement), the mill housings 1A and 1B are
The removal and reassembly work must be done carefully.
This is not easy to do and takes a lot of time. Further, a considerably large work space is required on the side of the material pass line L opposite to the housing support 26. In a multi-strand continuous casting machine, the strand spacing is narrow, and in the V-H continuous mill, which is directly connected to the continuous casting machine, the predetermined rolling temperature is maintained by minimizing material temperature drop after casting in order to prevent product quality such as cracking due to rolling. In order to maintain the minimum distance between the stands, the mill installation space is narrow, so if the space between the stands is used as a work space, it will be easier to remove and reassemble the mill housings 1A and 1B when changing material sizes. cause problems. Furthermore, the mill housing 1A,
A bending moment (in the vertical plane) acts on each mill stand due to its own weight such as 1B and mill rolls 5A, 5B, etc., and a bending moment (in the horizontal plane) acts on each mill stand due to the tension of the rolled material during rolling. ,3B
However, there is a problem in that sufficient consideration must be given to the strength of the bearing and the rigidity of the housing support 26.

The present invention was made to solve the above problems, and aims to stabilize the support of the mill housing, increase the rigidity of the housing support, and facilitate the removal and reassembly of the mill housing. purpose.

[0006]

[Means for Solving the Problems] A horizontal rolling mill according to the present invention has a material pass line L as shown in FIGS. 1 to 7.
A mounting block 2 is provided on each side of one end of a pair of mill housings 1A and 1B, which are vertically opposed to each other and extend in the material path direction. are attached via swing shafts 3A, 3B, and a pair of vertically opposed horizontal mill rolls 5A, 5B are rotatably attached to the intermediate portions of the mill housings 1A, 1B with both ends supported, and the mill housing 1A ,1
A roll spacing adjustment device 8 is installed between the other ends of B, and a pair of housing supports 9 are arranged on the mill bed 10 to face each other from side to side and extend vertically across the material pass line L.
are provided upright, and opposing engagement grooves 1 extending in the vertical direction and opening upward are provided in opposing portions of each of the housing supports 9.
2, the mounting blocks 2 are fitted into the respective engagement grooves 12 from above, and the upper parts of these mounting blocks 2 are pressed downward and fixed via a housing clamp device 15 provided on the upper part of the housing support 9. This configuration achieves the above object.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

In the figure, 1A and 1B are a pair of upper and lower mill housings that face each other vertically across the material pass line L and extend in the direction of the material pass line, and 2 indicates a pair of mill housings that face left and right across the material pass line L and extend in the vertical direction. A pair of extending mounting blocks.

The side portions of one end of the mill housings 1A, 1B are attached to opposing portions of the mounting block 2 via swing shafts 3A, 3B, and a pair of side portions of the mill housings 1A, 1B are provided between the ends of the mill housings 1A, 1B. The mill housings 1A and 1B can approach and separate from each other with the material pass line L in between by an interlocking device 4 consisting of a sector gear or the like.

5A and 5B are a pair of horizontal mill rolls that face each other vertically with the material pass line L in between and extend in a direction perpendicular to the material pass direction, and roll chocks 6A and 6B are provided at the intermediate portions of the mill housings 1A and 1B, respectively. , roll shaft 7A, 7
It is rotatably attached with both ends supported via B.

Reference numeral 8 denotes a roll interval adjusting device (hydraulic cylinder in the embodiment), which is installed between the other ends of the mill housings 1A and 1B.

Reference numeral 9 denotes a pair of housing supports that face each other on the left and right sides with the material path line L in between and extend vertically.
-H is installed upright on a predetermined mill bed 10 on the continuous mill line and is placed after the V mill 11, as viewed from the material path direction U
(See Figure 5). Opposing engagement grooves 12 extending in the vertical direction and opening upward are provided in the opposing portions of these housing supports 9, and in each of the engagement grooves 12, opposing surfaces of the engagement grooves 12 are provided. A plurality of side liners 13 (in the embodiment, two) having a U-shaped cross section are removably installed at vertical intervals in contact with both sides of the engagement groove 12, and in contact with the lowermost surface of the engagement groove 12. A lower liner 14 is removably installed.

Reference numeral 15 denotes a housing clamp device, in which a pair of holding cylinders 16 are provided on each upper part of the housing support 9 so as to be concentric with each other on the left and right sides with the material path line L interposed therebetween. (hydraulic cylinder in the embodiment), and the cylinder 1 is provided in the holding cylinder 16.
A wedge 18 connected to the tip of the rod 7 is fitted in such a way that it can be approached and separated, and a clamping surface 18 is provided at the bottom of the tip of the wedge 18, and the clamping surface 18 is inclined upward toward the tip.
It forms a.

A mounting block 2 is attached to the side of one end of the mill housings 1A, 1B via swing shafts 3A, 3B.
The housing is fitted from above into an engagement groove 12 provided in the housing support 9, is engaged and supported by the side liner 13, is supported from below by the lower liner 14, and is provided on the upper part of the housing support 9. A clamping surface 18a on the lower surface of the tip of the wedge 18 of the clamping device 15 is pressed from above and clamped between it and the lower part of the engagement groove 12 (lower liner 14).

Reference numerals 19A and 19B indicate universal spindles, which are composed of a spindle 20 and coupling halves 213 attached to both ends of this spindle 20 via universal joints 211 and 212. The spindle 20 itself is expandable and retractable by a spline mechanism or the like. The coupling half 213 on the drive side is attached to the output shaft of the drive 22. Further, the coupling half 213 on the pass line side is supported by the spindle carrier 23, and the carrier shift cylinder 24 is supported by the spindle carrier 23.
movement of the spindle carrier 23 (spindle 20
The roll shafts 7A and 7B on which the mill rolls 5A and 5B are mounted are removably connected to the roll shafts 7A and 7B, respectively.

In the above configuration, the device on the right side of FIG. 1 will be explained. When removing the mill housing, the spindle carrier 2 is moved by the carrier shift cylinder 24.
3 to the right in FIG.
13 from the roll shafts 7A, 7B, the wedge 18 is moved back from the position above the mounting block 2 by the cylinder 17 of the housing clamp device 15, and then the mill housings 1A, 1B are lifted up by a crane and the mounting block 2 is supported by the housing support. 9 from the engagement groove 12 and conveyed to a predetermined position.

When reassembling the housing, the mill housings 1A and 1B are suspended by a crane and the mounting block 2 is fitted into the engagement groove 12 of the housing support 9 from above in the reverse order as described above, and then the housing clamp device is installed. The wedge 18 is advanced to a position above the mounting block 2 by the cylinder 17 of 15, and the clamping surface 18a of the wedge 18 is pressed against the upper part of the mounting block 2, and the mounting block 2 is engaged with the wedge 18 of the housing clamp device 15 by the cam action. It is clamped and fixed between a lower liner 14 provided at the lower part of the matching groove 12. Next, the carrier shift cylinder 24 moves the spindle carrier 23 to the left in FIG.
A, 19B pass line side coupling half 213
are engaged with and connected to the roll shafts 7A and 7B. When responding to a change in material size, the mill housings 1A and 1B to be reassembled are changed.

The interval between the mill rolls 5A and 5B is adjusted by using a stopper block 25 attached to the roll interval adjusting device 8, and adjusting the opening/closing stroke by inserting and removing the stopper block 25. Also, the spacing between mill rolls is adjusted before assembly into the line.

After reassembling the mill housing, rolling work is carried out, and at that time, the mill rolls 5A and 5B are rotated around the roll shaft 7.
It is rotated in the rolling direction while being supported on both sides by A and 7B,
The rolling reaction force and the tension of the rolled material passing between the stands are supported by the housing support 9 via the mill housings 1A, 1B and the mounting block 2.

[0020]

Effects of the Invention As described above, the present invention provides mounting blocks that extend in the vertical direction and are attached to each side of one end of the mill housing via a swing shaft. The mill housing is inserted from above between the housing supports facing left and right with the pass line in between, and clamped and fixed by the housing clamp device, so removal and reassembly of the mill housing can be done easily and quickly using a crane from above. This not only improves operability and prevents a decrease in operating rate, but also eliminates work space from the sides of the material pass line, making the equipment more compact. In addition, since a pair of opposing horizontal mill rolls are stably supported on both sides by the mill housing via the roll shafts, the mill housing and mill rolls can be stably supported by their own weight and the tension received from the rolled material passing between the stands during rolling. On the other hand, the rigidity of the housing support can be reliably increased, and the rolling quality can be improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view taken along line C in FIG. 1;

FIG. 3 is a side view showing details of the H mill housing.

FIG. 4 is a plan view showing details of the H mill housing.

FIG. 5 is a front view with a main part cut away showing the housing support and the housing clamp device.

FIG. 6 is a plan view showing a housing support and a housing clamp device.

FIG. 7 is an enlarged sectional view taken along line D in FIG. 6;

FIG. 8 is a front view showing a conventional example.

9 is a side view taken along line E in FIG. 8. FIG.

FIG. 10 is a plan view schematically showing a conventional example.

Claims (1)

[Claims] Claim 1: A pair of mill housings are provided on each side of one end of a pair of mill housings that face each other vertically with a material pass line in between and extend in the material pass direction, and extend in the vertical direction between the ends of the mill housings. A pair of vertically opposed horizontal mill rolls are rotatably attached to the intermediate portions of each of the mill housings with both ends supported, and a pair of horizontal mill rolls are rotatably mounted between the other ends of the mill housing. At the same time, a pair of housing supports that extend vertically are installed on the bed, facing each other on the left and right with the material pass line in between, and Opposing engaging grooves that extend upwardly are provided, and the mounting blocks are fitted into the respective engaging grooves from above, and the upper parts of these mounting blocks are connected to the upper part of the housing support via a housing clamping device. A horizontal rolling mill characterized by being pressed downward and fixed.