JP2002254104A - Rolling facilities and its front and rear face facilities for section steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide rolling facilities and its front and rear face facilities capable of performing an efficient and less risky roll recombination toward workers and capable of requiring no large space around the rolling mill in the section steel rolling facilities composed of a universal roll stand and an edger roll stand. SOLUTION: Font and rear face steel stock induction transfer units 14, 15 are evacuated and a bogie which can transfer roll assemblies 16, 17 and a guide 27 is charged into the inside of the rolling line and after the rolling ends, the roll assemblies and the guide are mounted on to the bogie to be carried out of the line through one of sides of the front face or rear face of the rolling facilities, and simultaneously, the roll assemblies and the guide fed to the next rolling are mounted on the other transfer bogie through the other side to be carried inside the rolling mill so that the roll recombination can efficiently be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to two or three roll stands each having a guide, ie
The present invention relates to a shaped steel rolling facility comprising a combination of one universal roll stand and one edger roll stand or one edger roll stand provided between two universal roll stands. The present invention relates to a shaped steel rolling facility capable of efficiently changing rolls, and a front and rear facility thereof.

[0002]

2. Description of the Related Art The main rolling equipment for rolling a section steel such as an H-section steel is a two or three roll stand each having a guide portion, that is, a combination of a universal roll stand and an edger roll stand or two roll stands. A section steel rolling plant is generally used which is composed of a combination of an edger roll stand provided between two universal roll stands. Shaped steel products have many cross-sectional shapes and are manufactured for different cross-sectional shapes by incorporating different roll assemblies, including guide devices, into the above-described rolling equipment. In other words, the section steel manufacturing factory has roll assemblies corresponding to the cross-sectional shape to be manufactured, and when rolling, it is necessary to change the roll assembly to be manufactured each time (hereinafter, roll change). For this reason, rearrangement work is frequently performed, and it is particularly important for a section steel manufacturing facility to ensure that this work is performed efficiently, avoids the danger of workers involved in the rearrangement work, and is performed safely. . From this viewpoint, as means for realizing this, Japanese Patent Application Laid-Open Nos. 10-272503 and 10-2725
No. 04 is disclosed. JP-A-10-27250
The means disclosed in Japanese Patent Application Publication No. 3 (1999) -1995 is characterized in that, on the operation side, an outer rail extending to the drive side along the side of the housing located outside the outer roll stand on the one hand at the exchange position, And on the other hand, a central roll is attached to the operating side across the carriage in line with the central roll stand, the central rail is on the carriage and extends to the outside of the carriage, and each outer rail The roll stand is a rolling line provided with a roll stand center rail extending toward the operation side. Also, Japanese Patent Application Laid-Open
The means disclosed in Japanese Patent Publication No. 0-272504 is a rolling line in which a guide portion is connected to a roll assembly and is configured to be separated from a rolling line of a rolling line together with a roll housing on the working side of three roll stands as one unit. is there. These methods can efficiently perform roll change with little danger to workers, but require a large space around the rolling mill.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolled steel mill comprising a group of roll stands as described above, which makes it possible to change rolls efficiently and with little danger to workers. An object of the present invention is to provide a rolling facility and its preceding and following facilities that do not require a large space around the machine.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolled steel mill comprising a combination of a universal stand and an edger stand and the front and rear facilities thereof, as shown in claim 1 of the present invention. The roll assembly moving table 40, which supports the assembly and the guide device collectively and moves in the direction of the rolling line and moves in the direction perpendicular to the line, and the steel material guiding and carrying devices 14 and 15 arranged before and after the shape rolling equipment are collectively installed. It is composed of a transfer device moving table 52 for retreating in the direction perpendicular to the line, and after retreating the front and rear steel material guiding and carrying devices 14 and 15 out of the line,
In the space created by the retreat, the roll assembly moving table 40 is moved to the steel material guiding and conveying device 1 on the front and rear surfaces in the rolling line.
4 and 15 and then moved from that position to a position immediately below the roll stand to be re-arranged. With the roll assembly posted, the roll assembly moving carriage 40 is moved to the steel material guiding and transporting device 14 on the front and rear surfaces in the rolling line. Move to 15 positions,
In addition to the above-described equipment configuration, the roll assembly may be replaced by a roll assembly when the roll assembly is replaced by a section steel rolling facility configured to be carried out of the line from the position and the front and rear facilities thereof. The problem is solved by means in which the roll housings of the at least one roll stand on the driving side and the working side can be opened and closed in a direction perpendicular to the rolling line, so that the accompanying guide can be inserted in the rolling line of the rolling line. . In the prior art, a large space is required around the rolling mill in order to set up the installation space for the roll assembly and the guide before and after the change in the vicinity of the rolling mill and to secure the means for replacing the roll assembly and the guide in terms of equipment. . On the other hand, the present invention provides means for omitting such a space around a rolling mill by carrying in and out a roll assembly and a guide on a rolling line of a rolling line.

[0005] The front and rear steel material guiding and conveying devices are mounted on a truck that can be pulled out in a direction perpendicular to the line. At the time of roll change, after the rolling operation of one mold is completed, the front and rear steel material guiding and conveying devices are retracted in a direction perpendicular to the line. The movable trolley that transports the roll assembly and the guide retracts the above-mentioned front and rear steel guiding and conveying device in the direction perpendicular to the line, and inserts it into the empty space in a direction perpendicular to the line from the opposite direction to the retracted steel guiding and conveying device. I do. In order to convey in a direction perpendicular to the line, formally, rails crossing the line are provided before and after the rolling equipment. The roll housing is composed of a pair of structures on the drive side and the work side, respectively, and is fastened and loosened between them by a pretension force and fastened by a removable tie rod. Loosen the tie rod and move the drive side and the working side of the roll housing in a direction perpendicular to the line to a position where the roll assembly can move in the line direction. From the front and rear surfaces of the rolling equipment, the above-mentioned roll assemblies and the movable carriages for transporting the guides are loaded in an amount to be re-arranged. In order to move the movable trolley, a transport rail penetrating from the front position to the rear surface of the rolling mill group is provided immediately below the rolling line in the line direction of the rolling mill group. At the position of the widened stand, the roll assembly and the guide attached to the tie rod are held by the tie rod, deposited on a carrier, and carried out to the front and rear surfaces of the rolling equipment while being supported. Thereafter, the bogie on which the roll assembly and the guide are loaded moves on the rail crossing the line.

[0006] The final pressure roll assembly and the guide are carried out of the line in the above-described procedure, and the carriage loaded with the next pressure roll assembly and the guide is moved into the roll housing in the reverse procedure to the above-described method. After the roll assembly and the guide attached to the tie rod are housed in the roll housing, only the bogie is carried out to the front and rear surfaces of the rolling equipment. It is carried out of the line from the front and back of the rolling equipment. After the reassembling operation is completed, the roll assembly and the guide carrier are carried out of the line, and then the front and rear steel material guiding / conveying devices are moved from the retracted position to the rolling line.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 is a layout diagram of a section steel rolling plant and its front and rear facilities. 1 is a driving side, 2 is a working side, 3 is an upstream side of a steel material flow and a front side, and 4 is a downstream side and is called a rear side.
Normally, the billets conveyed from the upper process on the front side 3 are passed through the universal roll stand 11, the edger roll stand 12, and the universal roll stand 13 in the left-right direction of the drawing and repeatedly rolled,
It is transported to a lower process on the rear surface 4 side. In order to perform rolling along the rolling line 5 in the direction of the rolling line, a steel material guiding / conveying device 14 is disposed on the front face 3 of the section steel rolling equipment, and a steel material guiding / conveying apparatus 15 is disposed on the rear face 4 of the shaped steel rolling facility, and is used for rolling. .

FIGS. 3, 4 and 5 show the structure of the roll stand.
This will be described in detail. FIG. 3 is a plan view, and FIG.
FIG. 5 is a sectional view taken along line BB of FIG. In FIG. 3, reference numeral 20 denotes a roll housing (subscript a indicates a drive side, b indicates a work side), and reference numeral 21 indicates a drive shaft, which is connected to a drive motor (not shown). Reference numeral 22 denotes a tie rod for fastening the drive-side roll housing 20a and the work-side roll housing 20b. The tie rod 22 is composed of a tension shaft and a spacer that determines the distance between the drive-side and working-side roll housings. During rolling, a tension force is applied to the tension shaft by a pressurizing device, and the drive side and the work side roll housings are pressed against each other via a spacer to substantially integrate the roll stand. 23 is a horizontal roll, 24 is the same chock, 25 is a vertical roll, 26 is the same chock, 27
Is a rolling guide.

The members to be roll-rearranged are represented by 2
3, 24, 25, 26, 27, and 22, and a state of a roll assembly 16 in which four upper and lower horizontal rolls, two vertical rolls on a driving side and a working side, and four rolls are integrally stacked (FIG. 6). ) To change the roll. Reference numeral 22 denotes a tie rod as a strength member, but it is also possible to hold the tie rod for each certain mold range, similarly to the horizontal roll and the guide. FIG. 4 is a cross-sectional view of the driving side from the center of the rolling mill. The leading end of the rolling guide 27 extends to the vicinity of the horizontal roll 23. Reference numeral 31 denotes a horizontal roll pressing cylinder for adjusting the gap of the horizontal roll. When the rolls are changed, they are left in the horizontal roll chock receiver 41. FIG. 5 is a view as seen in a section facing the upper horizontal roll. Reference numeral 32 denotes a vertical roll reduction cylinder for adjusting the gap between the vertical roll and the horizontal roll. The cross-sectional structure has been described only for the universal roll stand. However, the edger roll stand is conceptually a vertical roll removed from the universal roll stand. Since it can be said that the equipment configuration can be easily established for the edger roll stand from which such a function is removed, the description including the method of changing the roll is omitted.

[0010] A series of roll changing procedures and equipment configuration in preparation for the end of rolling of one die and the start of rolling to the next die will be described. After the end of rolling, the following three operations are performed.
On each of the front surface 3 and the rear surface 4 of the rolling equipment, a carriage 52 loaded with the steel material guiding and conveying device 15 is placed on a rail 50,
Retract in the direction perpendicular to the line. Steel guiding and conveying device 15
Is moved, the carriage 53 in the line-direction loading rail is moved onto the rail 51 and the rolling line 5. In each of the roll stands 11, 12, and 13, the cylinder 42a shown in FIG.
, 42b to open the drive side and work side roll housings.

Next, either from the front surface 3 side or the rear surface 4 side, it passes through the rail 51 and the line-direction loading rail carriage 53 and passes through the roll stands 11, 1
The empty roll assembly moving carriage 40 is loaded into the rails 54 below the rolling lines 2 and 13 (see FIGS. 1 and 7).

Next, the chock support 41 shown in FIG. 7 is pulled in and the roll assemblies 16a and 17a are deposited on the roll assembly moving carriage 40 (see FIG. 1). At this time, as shown in FIG. 8, the guide 27 is also deposited on the roll assembly carrier 40 together with the tie rod 22, and the in-machine rail 54, the line-direction charging guide device 53, and the rail 5
1 and transported out of the line.

The final pressure roll assemblies 16a and 17a are carried out of the line and the next pressure roll assembly is loaded from the side opposite to the unloading. An example of handling the roll assembly will be described with reference to FIG. Final pressure roll assembly 16
a and 17a are carried out on the left side of the drawing, and the next pressure roll assembly 1
The rolls 6b and 17b are loaded on the right side of the paper, and the roll assembly for the next rolling is loaded into the die rolling mill in the reverse order of the procedure for unloading. After the charging, the empty roll assembly moving carriage is carried out of the line, and the rolling mill and the steel material guiding carriage are brought into a state ready for rolling as shown in FIG.

In the above embodiment of the invention, 3
Although the case of one roll stand has been described, the description of the case of one universal roll stand and one edger roll stand will be omitted since the same procedure can be used to change the roll without any problem.

[0015]

According to the present invention, in the rolling equipment described in the above-mentioned roll stand group, it is possible to efficiently change the rolls and reduce the danger to the workers, and a large space is required around the rolling mill. No equipment can be realized. Further, when the roll assembly moves as shown in FIG. 1, if the separate building below the drawing is a roll maintenance yard and the disassembly and assembly are performed at that location, the automatic operation of the roll changing work can be performed. . Furthermore, if the operator's cab is placed between the rolling building and the roll maintenance building, the visibility of the rolling equipment working side, which had been a temporary roll assembly temporary storage area, will be expanded,
The rolling monitoring work will be drastically improved, and the work status of the roll maintenance yard will be easier to grasp.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a plan view of a mold steel rolling facility and its front and rear facilities showing the facility configuration of the present invention in a straightforward manner in which a roll change is being performed directly on a rolling line.

FIG. 2 is a plan view of a mold steel rolling facility and its front and rear facilities showing a facility state at the time of rolling.

FIG. 3 is an enlarged view of FIG. 2 for describing components of the roll stand.

FIG. 4 is a sectional view taken along the line AA of FIG. 3, showing the relationship between the horizontal roll and the front-rear guide as viewed from the side.

5 is a cross-sectional view taken along the line BB in FIG. 4, illustrating the relationship between the upper horizontal roll and the front-rear guide as viewed from above.

FIG. 6 is a diagram for explaining a relationship between a roll assembly and a rolling mill, particularly a facility configuration related to widening.

FIG. 7 is a diagram for explaining the relationship between the roll assembly and the rolling mill, particularly the relationship between the equipment configuration related to widening and the roll assembly moving trolley. (Figure in a different state from FIG. 6)

FIG. 8 is a diagram when a roll assembly and a guide are stacked on a carriage.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rolling line drive side 2 Rolling line working side 3 Rolling equipment front surface 4 Rolling equipment rear surface 5 Rolling line 11 Universal roll stand 12 Edger roll stand 13 Universal roll stand 14 Front steel guiding and conveying device 15 Rear steel guiding and conveying device 16 Universal roll assembly (A is the final pressure roll, b is the next pressure roll) 17 Edger roll assembly (a is the final pressure roll,
b is the next pressure roll 20 roll housing (a is the drive side, b is the work side) 21 drive shaft 22 tie rod 23 horizontal roll 24 horizontal roll chock 25 vertical roll 26 vertical roll chock 27 guide 31 horizontal roll reduction device 32 vertical roll reduction device 40 Roll assembly moving trolley 41 Horizontal roll chock receiver 42 Stand shift cylinder (a is driving side, b is working side) 43 Horizontal roll chock receiving shift cylinder (a is driving side, b is working side) 50 Steel guiding and conveying device moving rail 51 Line direction Loading guidance device moving rail 52 Steel material guiding conveyance device moving table 53 Line direction charging guidance device 54 Roll assembly transporter rail

Claims (2)

[Claims] 1. In a shaped steel rolling equipment comprising a combination of a universal stand and an edger stand, and a front and rear equipment thereof, a roll assembly and a guide device of each roll stand are collectively supported and moved in a rolling line direction, and , A roll assembly moving table that moves in the direction perpendicular to the line, and a transfer device moving table that collectively retracts the steel material guiding carry-in device arranged in front of and behind the shaped steel rolling equipment in the line perpendicular direction. After the evacuation from the line, the roll assembly moving table is inserted into the space created by the evacuation at the position of the steel guiding and conveying device on the front and rear surfaces of the rolling line, and then moved from there to immediately below the roll stand to be replaced With the roll assembly posted, move the roll assembly moving trolley to the steel A section rolling machine and a front and rear facility thereof, which are configured to move to a feeder position and to carry out of the line from the position. 2. The roll housing of at least one of the drive-side and working-side roll stands is arranged at right angles to the rolling line so that when replacing the roll assembly, the roll assembly and the accompanying guide can be inserted in the rolling line of the rolling line. 2. The shaped steel rolling equipment according to claim 1, wherein the equipment can be opened and closed.