JPH0428405A - Rearranging method of horizontal rolling roll of which rolling width is variable and its device - Google Patents

Abstract

PURPOSE:To shorten the time for separation and assembly and to reduce man- hour by mechanizing and automating off-line separation and assembly of the roll chuck, cartridge, etc., of a horizontal roll of which the rolling width is variable with complicated structure. CONSTITUTION:The horizontal roll of which the rolling width is variable is removed from a rolling mill in the state that a horizontal roll body, roll chucks, cartridge, coupling, etc., are mounted, transferred onto a roll changing device 70 and each of the barrel parts 5-1, 5-2 of the horizontal roll are placed on the support tables 11, 12 of a roll supporting device 10. The roll supporting device 10 has a turntable 16 which is revolved in a horizontal plane that consists of a revolving device 15 and rotary driving gear 17 and is made so as to be possible to easily perform centering / adjustment of the placed horizontal roll in the vertical and horizontal direction. The coupling 51, cartridge 41 and chucks 2, 3 are drawn out from the horizontal roll of which the rolling width is variable and only the horizontal roll body 1 is left on the roll supporting device 10. In the case of assembling the horizontal roll of which the rolling width is variable, these are assembled by reversing the movements in the case of separation.

Description

Detailed Description of the Invention (Industrial Application Field) This invention relates to a universal rolling mill used for rolling H-section steel, etc., in which the horizontal roll for web rolling is divided into two parts. This article relates to a method and device for rearranging horizontal rolling oars whose rolling width can be changed by making the length changeable online. 3. (Prior art) It is best to use a universal rolling mill to roll H-section steel. Common.

When manufacturing X-7 section steel using this universal rolling mill, the end faces of the horizontal rolls are used to roll the flange portion, as shown in FIG. In addition, FIG. 9 shows hard rolls 7, horizontal rolls 1. If- (It is a vertical cross-sectional view showing the relationship to the section steel.

As is clear from Fig. 9, the maximum value of the flange width B is determined by the gap formed between the hard roll body length and the horizontal roll end face, and can be freely selected within this maximum value. However, the web height h is determined by the horizontal roll body length W and the flange thickness t.

Therefore, rolling of section steel using a universal rolling mill had the following problems.

1) Horizontal rolls roll down and roll the inner surface of the flange of the material to be rolled using the end face of the roll, but since the speed of the end face of the roll varies depending on the position in the radial direction of the roll, the wear due to friction with the material to be rolled is severe. As the amount of rolling increases, the web height becomes insufficient, and it becomes difficult to stabilize H-shaped steel products of a certain size (7
You won't be able to get it. Therefore, in order to improve dimensional accuracy, the horizontal rolls must be frequently replaced and the length of the roll body must be modified, which not only hinders productivity but also increases the roll unit consumption.

2) The web height h of the IJ section is h2W+2t due to the horizontal roll body length W and flange thickness t1.

However, the flange thickness t for the same nominal size is
Since there are many types of I, it is not possible to manufacture H-section steel with a constant web height, so-called constant outer diameter, with a constant roll body length W.

For these problems, Japanese Utility Model Application Publication No. 51-20034,
and JP-A-61-169105, as shown in Figure 1O, discloses a technique for inserting a spacer 8 for adjusting the roll body length between a pair of sleeve rolls 1-A (~, a technique for changing the roll body length). However, with these methods, it is not possible to change the roll body length online, and the roll is adjusted by removing it from the stand.
There were problems such as a decrease in production efficiency and an increase in the number of man-hours required for recombination.

Furthermore, in response to problem 1, Japanese Patent Application Laid-Open No. 61-262407 discloses a technology for changing the roll body length online, but it takes a lot of time to rearrange the complicated rolls. I had a problem that required a lot of man-hours.

(Problems to be Solved by the Invention) As a solution to the problems of the prior art described above, the inventors have been working on improving a horizontal roll with variable rolling width that makes it possible to change the roll body length online. , this type of horizontal roll has strict fitting accuracy. ＜As the mechanism becomes more complex and the number of parts increases, it becomes difficult to disassemble and assemble, or reassemble, the horizontal rolls with variable rolling width when they are removed from the rolling mill or attached to the rolling mill, and there is an urgent need to solve this problem. became.

Therefore, the present invention aims to solve the above-mentioned problems, and provides a method and an apparatus for easily and automatically rearranging horizontal rolls having variable rolling widths.

(Means for Solving the Problems) The present invention divides the roll cylinder into a drive side and an operation side, and enables relative movement of the roll cylinder toward and away from each other along the roll axis direction.
During off-line reshuffling of a horizontal mill roll with variable rolling width, which is supported by bearings on the drive side and operation side number roll chocks, and the above-mentioned relative movement cartridge is attached to the operation side roll chock, the bisected roll body is supported. Then, measure the distance from the reference position in two orthogonal directions at at least two separate locations on the cylindrical part of the roll shaft, and adjust the height of the roll and the horizontal position of the roll shaft based on the measured values. Supports left and right roll chocks,
A horizontal rolling width variable rolling width characterized in that the cartridge is rotated to remove it from the chock and the coupling is extracted, then the left and right roll chocks are removed, and when assembled, the steps are reversed to the disassembly process. A method for rearranging mill rolls, and the present invention also provides an apparatus for offline rearrangement of horizontal mill rolls having a variable rolling width having the above-mentioned configuration, comprising: a height of the rolls from at least two reference points in the axial direction of the rolls; a measuring device for measuring the roll position in the horizontal direction from at least two reference points in the roll axis direction; an elevating device that allows the bisected roll cylinder to be integrally raised and lowered; a roll support device that has a turning table that allows the bisected roll cylinder to integrally rotate; a chock support device having an elevating device and a moving device in the roll axis direction; a rotating device that rotatably supports the cartridge and rotates the cartridge; a cartridge cart having an elevating device and a moving device in the roll axis direction; This is a horizontal rolling roll rearranging device with variable rolling width, which is equipped with an elevating device that supports a roll coupling, and a coupling support device that has a moving device in the roll axis direction.

(for production) This invention will be explained more specifically.

FIG. 1 shows, as an example, a variable width rolling horizontal roll in which a horizontal roll body 1 including a roll shaft is equipped with roll chocks 2 and 3, a cartridge 4, and a coupling 51, a roll support device 10, a roll chock support device 20,
30, a cartridge cart 4o, and a coupling support device 50. FIG.

Based on FIG. 1, a case will be described in which the roll chocks 2 and 3, the cartridge 4, and the coupling 51 are separated from the variable rolling width horizontal roll.

After rolling, the horizontal roll with variable rolling width is removed from the rolling mill with the horizontal roll main body, roll chock, cartridge, coupling, etc. attached, and placed on the roll changing device 70 shown in FIG. 1 using an overhead crane or the like. The bodies 5-1 and 5-2 of the horizontal rolls are mounted on the first support table 11 and the second support table 12 of the roll support device IO, respectively, and the roll chocks described above are mounted on these support tables. , supports the entire variable width horizontal roll equipped with cartridges, couplings, etc.

This roll support device IO has a turning table 16 that rotates in a horizontal plane and is composed of a rotating device 15 and a rotation drive gear 17. On this turning table 16, there is a first wheel that is raised and lowered by a screw-up type jack 80. It consists of a support stand 11 and a second support stand 12 having a slide wedge type jack 13 on the first support stand 11.

The screw-up type jack 80 is composed of a worm, a worm wheel 82, and a screw shaft 83, and is passed through a guide 84 and a rod 85 to the sabot stand 11.
It is also possible to use a jack called a leveling block for the slide wedge type jack 13 mentioned above. In this way, the roll support stand 10 can easily adjust the height and horizontal centering (7) of the mounted horizontal rolls.

As shown in FIG. 2, the roll support stands 11 and 12 are V-shaped to support the roll body and prevent the roll from rolling.

Next, the height and horizontal centering of the horizontal roll mounted on the roll the port device 10 are determined using, for example, a distance measuring device using a laser, as shown in FIGS. 1 and 3. A pair of laser irradiation light sources 18-1 and 18-2 that emit laser light vertically upward are arranged at a certain distance apart on a horizontal floor surface, and a pair of laser irradiation light sources 18-1 and 18-2 that emit laser light horizontally are arranged. The noser irradiation light source 19-1.19-2 is arranged horizontally at a certain distance in a direction perpendicular to the plane containing the irradiation path of the irradiation light source 18-1.18-2, and the noser irradiation light source 19-1. Point Y-1,')"2 on the surface facing downward on the cylindrical machined surface, and point X on the surface facing sideways
-1 and X-2, and set the distance to the center of the roll, which is the sum of half the diameter of the roll neck of the measuring part, to the minimum. Then, these laser irradiation light sources 18-1 and 18-2, and 19-1 and 19-
The height and horizontal centering operations to minimize the distance to the roll center in the measurement in step 2 are performed in the roll axis direction and horizontal direction.
1. Horizontal adjustment is performed by raising and lowering the second Zapoto table using the jack 13 of the device 10, height adjustment using the jack 80, and horizontal adjustment using the turning table 16.

Next, the coupling 51 is removed from the horizontal roll.

The coupling support device 50 is adjusted to the position of the coupling 51 using the shift device 58, and the screw push-up type jack 56 is operated to support the coupling 51 on the support frame 52. Thereafter, the coupling 51 is removed from the horizontal roll 1 while moving the coupling support device 50 in the roll axis direction on the traveling rail 150 using the shift device 58.

This coupling support device 50 includes a screw-up type jack 56 consisting of a support frame 52 that directly supports the coupling, a rod 53, a guide 54, and a drive device 55 that supports and raises and lowers the coupling, and a coupling support A shift device 58 having an axle 57 driven by a motor for moving the device 50 in the roll axis direction, that is, on the running rail 150 on the rail mount 160.
It consists of

Next, as shown in FIG. 4, the cartridge 4, which is connected to the roll chock 2 by the screw connection part 100, is removed from the roll chock 2. positioning the cartridge cart 40 under the cartridge 4 using the moving device 140;
A slide wedge type jack 46 is operated to raise a support device 44 having a support roller 42 shown in FIG. 5 to support the cartridge 4. In this state, as shown in FIG. 6, the gear 6 provided on the outer periphery of the cartridge 4 and the binion 120 of the rotary bag full 123 are engaged, and the rotation drive device 135 shown in FIG. 7 is operated to move the cartridge 4. Rotate. By doing this, the cartridge 4 is removed from the roll chock 2 at the screw joint 100. Also, since the cartridge 4 moves in the roll axis direction in order to rotate the screw joint and remove it from the roll chock 2, the cartridge 4 is moved in synchronization with this movement. and move the cartridge cart 40 onto the traveling rail 150 using the moving device 140.
The cartridge 4 is moved in the same direction as the moving direction of the cartridge 4. If the roll chock 2 rotates when the cartridge 4 is rotated, it is necessary to support the roll chock 2 with the chock support 1/device 20 in advance to prevent it from rotating.

By doing so, the cartridge 4 includes the roll chock 2 and the sleeve roll 111 (simply referred to as the sleeve roll 111) having the operating side roll cylinder 5-1.
It is separated from a roll shaft 112 (simply referred to as roll shaft 112) that includes the drive-side roll cylinder 5-2.

As shown in FIG.
02, clutch 103, nut 104, nut storage box 1
05, bearing case 106, core shaft 107
, a thrust bearing 108, and an electric motor 1
01 rotates the nut 104 through the reducer 102, the bearing case 106 slides in the direction of the roll axis, moves the roll axis 112 in the direction of the roll axis, and reduces the distance between the roll cylinders 5-1 and 5-2. In other words, the length of the roll body can be changed, and the cartridge 4 can be removed from the chock 2 by unscrewing the screw connection part 100.
By separating the above-mentioned roll body length variable device 11
0 can also be easily separated from the sleeve roll 111 and roll shaft 112.

The cartridge carriage 40 includes a slide wedge type jack 46 as a lifting mechanism, a cartridge support device 44, a cartridge rotation device 123, a rotation drive device 135, a movement device 140, and the like. As shown in FIGS. 1 and 8, the slide wedge type jack 46 is provided with a slide block 47 having a diagonal slide groove 48 on the bottom surface of the second frame 45, and a slide block 47 having a diagonal slide groove 48 on the top surface of the third frame 91. horizontal slide groove 9
3, a slide block 95 having an oblique upper surface and a horizontal lower surface is fitted into both slide grooves 47° 93, and the slide shoe 95 passes through the center of the slide block 95. screw shaft 9
It meshes with 6. Since the screw shaft 96 is restrained from moving in the axial direction by the box 97,
The slide shoe 9 is rotated by the rotation of the screw shaft 96.
5 slides in the axial direction of the screw shaft, and the second frame 45 and the first frame 41 connected to the second frame 45 via a height adjustment device 99 and the support further connected to this. The roller 42 is raised and lowered. Further, the support device 44 includes a support roller 42 and an adjustment screw 43, as shown in FIG. 5, and supports the cartridge 4. The rotating device 123 consists of a pinion 120, a link lever 121, and a cylinder 122, as shown in FIG. 6, and a rotating drive device 135 that rotates this includes a motor 131, a chain wheel 132, and a chain wheel 132, as shown in FIG. It consists of 133 and cheno 134.

Further, the moving device 140 has a structure in which wheels 144 provided at the lower part of the third frame 91 are rotated by a motor 141 and a chino 142, as shown in FIG.

Next, roll chocks 2 and 3 are removed from the horizontal roll. After the chock support devices 20 and 30 are positioned under the roll chocks 2 and 3 using the moving devices 28 and 38, respectively, the jacks 25 and 35 are operated to support the roll chocks 2 and 3, respectively. At this time, although not shown in FIG. 1, the supporting loads are measured using a load measuring device, and each of the roll chocks 2 and 3 is lifted and supported until the load reaches the weight corresponding to its own weight. Thereafter, the roll chocks 2 and 3 are removed from the horizontal roll 1 by moving the chock support devices 20 and 30 on the traveling rail 150 in the roll axis direction using the moving devices 28 and 38, respectively.

The chock support device 20 is a screw lifting type lifting device 25 consisting of a rod 22 for guiding the lifting and lowering of the support table 21, a guide 23, and a screw lifting mechanism section 24.
and a moving device 28 that uses a cylinder 29 to move in the roll axis direction. Note that the chock support device 3o also has the same structure as above.

In this way, the coupling 51. The cartridge 4, the chocks 2 and 3 are removed, and only the horizontal roll body l remains on the roll support device 10. This remaining horizontal roll body is transported to a predetermined location such as a roll shop by an overhead crane or the like.

Next, the case of assembling horizontal rolls with variable rolling width will be described.

First, the horizontal roll body 1 is transported from a predetermined location such as a roll shop using an overhead crane or the like, and placed on the roll support device 10. In this state, the levelness is checked in the same manner as when separating, and if it is not level, it is corrected, and the height is adjusted with the jack 8o to a specified height determined by the roll diameter. Furthermore, the horizontal direction is checked in the same manner as in the case of separation 7, and if the direction is different, this is corrected to perform centering. After the horizontal centering of the horizontal roll is completed in this way, the roll chocks 2 and 3 are attached to the chock support devices 2o and 3o, the cartridge 4 is attached to the cartridge truck 4o, and the coupling 51 is attached to the coupling buzzer boat device 5o.
After mounting the cartridges and adjusting their heights, the roll chocks 2 and 3, the cartridge 4, and the coupling 51 can be installed (7) and assembled in this order by performing the reverse operation of separating them.

Next, we compared the recombination time and man-hours between the method of this invention and the conventional method.

The results are shown in Table 1.

Table 1 As is clear from Table 1, according to the method of this invention, separation,
Assembly is easy, and the time and man-hours are significantly reduced.

(Effects of the Invention) This invention facilitates the off-line separation and assembly of roll chocks, cartridges, etc. of horizontal rolls with a complex structure and variable rolling width by mechanization and automation17. For example, reduction of separation and assembly time,
Not only does it reduce man-hours, greatly contributing to improved productivity and labor savings, but since cartridges can be attached and detached in a short time, it is possible to reduce the number of cartridges relative to the number of rolls, which greatly contributes to reducing investment.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a state in which horizontal rolls with variable rolling width are mounted on the roll changing device of the present invention. Fig. 2 is a side view of Fig. 1 showing a roll support stand supporting the roll body. Figure 3 is a vertical cross-sectional view taken along line A-A and in the direction of the arrow. A vertical cross-sectional view taken along the line B-B in the figure in the direction of the arrow. Figure 4 is a vertical cross-sectional view of the cartridge showing the roll body length variable device. Figure 5 is a state in which the cartridge is supported by a cartridge cart. FIG. 6 is a side view showing a state in which the gear provided on the cartridge and the binion of the cartridge rotating device are engaged, and FIG. FIG. 7 shows the sixth diagram showing the drive mechanism of the cartridge rotating device.
8 is a plan view taken along line D-D in the figure in the direction of the arrow; FIG. 8 is a vertical sectional view taken along line E-E in FIG. are hard rolls, horizontal rolls,
A vertical cross-sectional view showing the relationship between the shaped steel. Figure 1O shows a vertical cross-sectional view of a horizontal roll into which a spacer for adjusting roll body length is inserted. 1...Horizontal roll 2...Roll chock (operation side) 3...Roll chock (drive side) 4...Cartridge 5-1...Roll body (operation side) 5-2...Roll barrel Part (drive side) 10... Roll support device 11... First support stand 12... Second support stand 13... Slide wedge type jack 15...
・Rotating device 16... Turning table 18-1.18-2.1ri-1, 19-2... Laser irradiation light source 70... Roll changing device 80... Screw push-up type jack 110.・・Roll body length variable device 123-...Turn g position 7th figure'/7----za-ll Susu 9th figure--...Uni 1 in ξ heaven 11 10th F 7-. 4-m-・Three 7″ Low/L

Claims (1)

[Scope of Claims] 1. The roll cylinder is divided into a driving side and an operating side, and bearing support is provided on each roll chock on the driving side and operating side to enable relative movement of approaching and separating each other along the roll axis direction, When performing off-line reshuffling of a horizontal rolling roll with variable rolling width, in which the above-mentioned relative movement cartridge is attached to a roll chock on the operating side, the roll body divided into two parts is supported, and at least two locations on the roll shaft cylindrical part are separated from each other. The height of the roll and the horizontal position of the roll axis are adjusted based on the measured values, and the left and right roll chocks are supported during disassembly, and the cartridge is rotated. A method for reassembling horizontal rolling rolls with variable rolling width, characterized in that a step of removing from the chock and a step of extracting the coupling are performed, then left and right roll chocks are removed, and when assembling, the steps are reversed to the disassembly steps. 2. The roll cylinder is divided into a driving side and an operating side, and the roll cylinder is supported by a bearing on each roll chock on the driving side and operating side, and the above-mentioned one is supported on the roll chock on the operating side to enable relative movement to approach and separate from each other along the roll axis direction. In a device for off-line reassembly of horizontal rolling rolls with variable rolling width, which is equipped with a relative movement cartridge, the height of the roll from at least two reference points in the roll axis direction and the reference point at least two points in the roll axis direction. a measuring device that measures the roll position in the horizontal direction from a point; an elevating device that supports each of the two halves of the roll cylinder and allows at least one side of the two halves of the roll cylinder to be raised and lowered; A lifting device that allows the roll cylinder to be raised and lowered integrally, a roll support device that has a turning table that allows the roll cylinder divided into two parts to be rotated integrally, and a lifting device that supports a chock and moves the lifting device and the roll axis in the direction a chock support device having a device, a rotating device that rotatably supports a cartridge and rotates the cartridge, a lifting device, and a cartridge cart having a moving device in the roll axis direction; a lifting device that supports a roll coupling and has a lifting device; A horizontal rolling roll rearranging device having a variable rolling width and a coupling support device having a moving device in the roll axis direction.