JPH0824945B2 - Horizontal rolling roll changing device with variable rolling width - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a universal rolling machine used for rolling H-shaped steel or the like, particularly a horizontal roll for web rolling, particularly, a roll cylinder that divides a roll cylinder into two parts. The present invention relates to a horizontal rolling roll recombining device having a variable rolling width by making it possible to change the length online.

(Prior Art) Generally, a universal rolling mill is used for rolling H-section steel.

When manufacturing H-section steel using this universal rolling mill, the end face of a horizontal roll is used for rolling the flange portion as shown in FIG. Note that FIG. 9 is a longitudinal sectional view showing the relationship between the hard roll 7, the horizontal roll 1, and the H-section steel A when H-section steel A is rolled by a universal rolling mill.

As is apparent from FIG. 9, the flange width B has a maximum value determined by the gap formed between the rigid roll cylinder length and the end face of the horizontal roll, and can be freely selected within this maximum value. However, the web height h is determined by the horizontal roll cylinder length W and the flange thickness t ₁ .

Therefore, the rolling of the H-section steel using the universal rolling mill has the following problems.

1) With horizontal rolls, the inner surface of the flange of the material to be rolled is rolled down by the roll end surface, but the speed of the roll end surface varies depending on the radial position of the roll, so wear due to friction with the material to be rolled is severe. As the amount of rolling increases, the height of the web becomes insufficient, and it becomes impossible to stably obtain H-shaped steel products of a certain size. Therefore, in order to improve the dimensional accuracy, the horizontal rolls are frequently replaced and the roll cylinder length is processed and corrected, which not only hinders the productivity but also increases the roll unit.

2) The web height h of H-section steel is expressed as h = W + 2t ₁ by the horizontal roll cylinder length W and the flange thickness t _1, but with the same nominal size, the flange thickness t ₁
Since there are many types of H-section steel with a constant web height, that is, with a constant outer height, it is not possible to deal with a constant roll body length W.

To solve these problems, in Japanese Utility Model Laid-Open No. 51-20034 and Japanese Patent Laid-Open No. 61-169105, as shown in FIG. 10, for adjusting the roll cylinder length between a pair of sleeve rolls 1-A. A technique is disclosed in which the spacer 8 is inserted to change the roll cylinder length. However, with these methods, the roll cylinder length cannot be varied online, and the roll is removed from the stand and adjusted, which causes problems such as impeding production efficiency and increasing man-hours for reassembly. It was

Further, in order to solve the above-mentioned problem, Japanese Patent Application Laid-Open No. 61-262407 discloses a technique for varying the roll cylinder length online, but for this reason, it takes a lot of time and man-hours to reconfigure a complicated roll. Had a problem that needed it.

(Problems to be Solved by the Invention) As a solution to the above-mentioned problems of the prior art, the inventors
We are working on improving a horizontal roll with variable rolling width that allows the roll cylinder length to be changed online.However, this type of horizontal roll has a strict fitting precision, a complicated mechanism, and a large number of parts. Therefore, it became difficult to disassemble, assemble, ie, change the horizontal rolls with variable rolling widths, which were removed from the rolling mill and attached to the rolling mill, and this solution was urgently needed.

Therefore, the present invention is intended to solve the above-mentioned problems, and provides an apparatus for easily and automatically reassembling horizontal rolls with variable rolling widths.

(Means for Solving the Problem) The present invention relates to an apparatus for offline reassembling of horizontal rolling rolls having a variable rolling width configured as described above, wherein the height of the roll from at least two reference points in the roll axial direction and the roll. A measuring device for measuring a horizontal roll position from at least two reference points in the axial direction, and an elevating and lowering device that respectively supports the bisected roll cylinder and is capable of elevating at least one side of the bisected roll cylinder. A device, an elevating device for integrally raising and lowering the bisected roll cylinder, a roll support device having a turning table for integrally rotating the bisected roll cylinder in a horizontal plane, and supporting a chock Then, 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 that rotates the cartridge, A variable rolling width having a cartridge carriage having a lowering device and a moving device in the roll axis direction, a coupling support device that supports the roll coupling, and has an elevating device and a moving device in the roll axis direction. This is a device for changing horizontal rolling rolls.

(Operation) The present invention will be described more specifically.

FIG. 1 shows, as an example, a roll width variable horizontal roll in which a roll chock 2 and 3, a cartridge 4 and a coupling 51 are mounted on a horizontal roll body 1 including a roll shaft, a roll support device 10, a roll chock support device 20 and 3
FIG. 6 is a side view showing a state of being mounted on a roll changing device including 0, a carriage 40 for a cartridge, and a coupling support device 50.

Based on this FIG. 1,
A case where the roll chocks 2 and 3, the cartridge 4, and the coupling 51 are separated will be described.

After the rolling, the horizontal roll with variable rolling width is removed from the rolling mill with the horizontal roll body, roll chock, cartridge, coupling, etc. installed, and is placed on the roll changing device 70 shown in FIG. 1 with an overhead crane or the like. The horizontal roll bodies 5-1 and 5-2 are conveyed and placed on the first support table 11 and the second support table 12 of the roll support device 10, respectively.
And the whole rolling width variable horizontal roll equipped with the above-mentioned roll chock, cartridge, coupling, etc. is supported by these support bases.

The roll support device 10 has a turning table 16 that rotates in a horizontal plane composed of a rotating device 15 and a rotary drive gear 17, and on the turning table 16, a first lifting / lowering jack 80 is used to move up and down. Support base 11 and first support base 11
It consists of a second support base 12 with a slide wedge type jack 13 on top. The screw-up type jack 80 includes a worm 81, a worm wheel 82, and a screw shaft 83, a guide 84, and a rod 85.
It is designed to raise and lower the support base 11 through
A jack called a leveling block may be used as the slide wedge type jack 13. In this way, the roll support device 10 can easily perform the height and horizontal centering investigation of the mounted horizontal roll.

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

Next, the height and horizontal centering of the horizontal roll mounted on the roll support device 10 can be measured, for example, by using a distance measuring device using a laser as shown in FIG. 1 and FIG. A pair of laser irradiation light sources 18-1 and 18-2 that irradiate laser light upward are arranged at a fixed distance on a horizontal floor surface, and a pair of laser irradiation light sources 19- that horizontally irradiate laser light. 1, 19-2 to the irradiation light source 18-1, 18
-2, the points Y-1 and Y on the surface facing downward on the cylindrical machining surface of the roll neck, which are arranged horizontally at a certain distance in a direction perpendicular to the plane including the irradiation path. -2, and the distances to the points X-1 and X-2 on the surface facing sideways are measured, and the distances to the roll center obtained by adding half of the diameter of the roll neck of the measurement part are aligned to the minimum. By doing.
And these laser irradiation light sources 18-1 and 18-2, and
For the centering operation in the height and the horizontal direction in which the distance to the center of the roll is minimized in the measurement at 19-1 and 19-2, the second support base is moved up and down by using the shack 13 of the roll support device 10. The horizontal adjustment using the jack 80, the height adjustment using the jack 80, and the horizontal adjustment using the turning table 16.

Next, the coupling 51 is removed from the horizontal roll.
The coupling support device 50 is aligned with 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 base 52. Thereafter, the coupling 51 is pulled out from the horizontal roll 1 while moving the coupling support device 50 on the traveling rail 150 in the roll axis direction using the shift device 58.

The coupling support device 50 includes a support base 52 that directly supports the coupling and a screw push-up type jack 56 that includes a rod 53, a guide 54, and a drive device 55 that supports and elevates the support mount 52, and the coupling support device 50. Is composed of a shift device 58 having an axle 57 that is driven by a motor for moving the roll axis direction, that is, on the traveling rail 150 on the rail mount 160.

Next, as shown in FIG. 4, the cartridge 4 which is connected to the roll chock 2 by the screw connecting portion 100 is removed from the roll chock 2. The cartridge carriage 40 is positioned below the cartridge 4 by using the moving device 140, and the slide wedge type jack 46 is operated to raise the support device 44 having the 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 circumference of the cartridge 4
And the pinion 120 of the rotation device 123 are engaged with each other, and the rotation drive device 135 shown in FIG. 7 is operated to rotate the cartridge 4. By doing so, the cartridge 4 is disengaged from the roll chock 2 at the screw coupling portion 100. Further, the cartridge 4 is moved in the roll axial direction because the cartridge 4 is rotated by screwing and released from the roll chock 2, so that the cartridge carriage 40 is moved in synchronization with this movement.
Is used to move on the traveling rail 150 in the same direction as the moving direction of the cartridge 4. In addition,
When the roll chock 2 rotates together with the rotation of the cartridge 4, it is necessary to support the roll chock 2 in advance by the chock support device 20 to prevent it from rotating.

By doing so, the cartridge 4 includes the roll chock 2, the sleeve roll 111 including the operation side roll cylinder 5-1 (simply referred to as the sleeve roll 111), and the roll shaft 112 including the drive side roll cylinder 5-2 (simply the roll shaft). 112)).

Roll cylinder length variable device 110 built in the cartridge 4
Is an electric motor 101 and a speed reducer 10 as shown in FIG.
2, clutch 103, nut 104, nut storage box 105, bearing case 106, core shaft 107, thrust bearing 108, and by driving the electric motor 101, the nut 104 rotates through the reduction gear 102, and the bearing case 106 rolls. The roll shaft 112 is slid in the axial direction to move the roll shaft 112 in the roll axial direction to change the distance between the roll cylinders 5-1 and 5-2, that is, to change the roll cylinder length. By separating the cartridge 4 from the detaching chock 2, the roll body length varying device 110 described above also includes the sleeve roll 111 and the roll shaft 112.
It is designed to be easily separated from.

The cartridge trolley 40 includes a slide wedge type jack 46 as a lifting mechanism and a cartridge support device.
44, cartridge rotation device 123, also rotation drive device 1
35, a moving device 140, and the like. As shown in FIGS. 1 and 8, the slide wedge type jack 46 has an oblique slide groove 48 on the lower surface of the second frame 45.
A slide block 47 having a third frame 91
A slide block 95 having a horizontal slide groove 93 is provided on the upper surface of the slide shoe 95, and a slide shoe 95 having an oblique upper surface and a horizontal lower surface is fitted in both slide grooves 48, 93. Meshes with a screw shaft 96 that penetrates through its central portion. Since the screw shaft 96 is restrained from moving in the axial direction by the box 97, the rotation of the screw shaft 96 causes the slide shoe 95 to slide in the axial direction of the screw shaft, and
The first frame 41 joined to the frame 45 and the second frame 45 via the height adjusting device 99 and the support roller 42 joined to the first frame 41 are moved up and down. As shown in FIG. 5, the support device 44 includes a support roller 42 and an adjusting screw 43, and supports the cartridge 4. The rotating device 123 is composed of a pinion 120, a link lever 121, and a cylinder 122 as shown in FIG. 6, and a rotary drive device 135 for rotating this is a motor 131, chain wheels 132, 133, as shown in FIG. And CHAIN 134. Further, as shown in FIG. 1, the moving device 140 has a structure in which the motor 141 and the chain 142 rotate the wheels 144 provided in the lower portion of the third frame 91.

Next, the roll chocks 2 and 3 are removed from the horizontal roll 1. After positioning the chock support devices 20 and 30 under the roll chock 2 and 3, respectively, using the transfer devices 28 and 38, jacks 25 and 35 are actuated to support the roll chock 2 and 3, respectively. At this time, although not shown in FIG. 1, the supporting load is measured by using a load measuring device, and the roll chocks 2 and 3 are respectively lifted and supported until the loads show their own weight. Then, the moving device 28 and
38 Chock support device 20 and 30 travel rail 15
The roll chocks 2 and 3 are removed from the horizontal roll 1 by moving them in the roll axial direction on 0.

The chock support device 20 moves in the roll axis direction using a cylinder 29 and a screw-up type elevating device 25 including a lot 22, a guide 23, and a screw elevating mechanism part 24 for guiding the elevating and lowering of the support base 21. It is equipped with a moving device 28. The chock support device 30 has the same structure as above.

In this way, the coupling 51, the cartridge 4, and the chocks 2 and 3 are extracted from the variable rolling width horizontal roll that is removed from the rolling mill, and only the horizontal roll main body 1 remains on the roll support device 10. The remaining horizontal roll body is carried to a predetermined place such as a roll shop by an overhead crane or the like.

Next, a case of assembling a horizontal roll having a variable rolling width will be described.

First, the horizontal roll main body 1 is transported from a predetermined place such as a roll shop by an overhead crane or the like and placed on the roll support device 10. Chock the horizon in the same way as separating in this state.If it is not horizontal, correct it and jack it to the specified height determined by the roll diameter.
Adjust the height with 80. The horizontal direction is checked in the same manner as in the case of further separation, and if the directions are different, this is corrected to perform centering. After the horizontal centering of the horizontal roll is completed in this way, the roll chock 2 is attached to the chock support devices 20 and 30, respectively.
3 and 4, the cartridge 4 is mounted on the cartridge carriage 40, and the coupling 51 is mounted on the coupling support device 50. After the heights of the respective cartridges are adjusted, the roll chocks 2 and 3 and the cartridge 4 are operated by performing the operations opposite to those for the separation. Then, the coupling 51 can be mounted and assembled in this order.

Next, the recombination time and man-hours of the case of using the method of the present invention and the case of the conventional method were compared and investigated. Table 1 shows the results.

As is clear from Table 1, according to the method of the present invention, the separation and the assembling can be easily performed, and the time and the man-hours are greatly reduced.

(Effects of the Invention) The present invention facilitates mechanization and automation of off-line separation and assembly of roll chocks, cartridges, etc. of horizontal rolls having a variable rolling width and having a complicated structure. For example, separation, reduction of assembly time,
Not only can the number of man-hours be reduced, productivity can be improved, and labor can be saved, but also because the cartridge can be attached and detached in a short time, the number of cartridges can be reduced with respect to the number of rolls, which greatly contributes to the reduction of investment.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a horizontal roll with a variable rolling width is placed on a roll changing device of the present invention, and FIG. 2 is a roll support stand for supporting a roll body. FIG. 3 is a vertical cross-sectional view as seen in the direction of the arrow as a cross-section on the line A, and FIG. 3 shows the relationship between the laser irradiation light source and the measurement points on the cylindrical machining surface of the roll neck. 4 is a vertical cross-sectional view as seen in the direction of the arrow in FIG. 4, FIG. 4 is a vertical cross-sectional view of a cartridge showing a roll cylinder length varying device, and FIG. 5 is a view showing a state in which the cartridge is supported by a cartridge carriage. FIG. 6 is a side view showing a state in which a gear provided on the cartridge and a pinion of a cartridge rotating device are meshed with each other, and FIG. 7 is a cartridge rotating direction. Sixth, showing the drive mechanism of the device
FIG. 8 is a plan view seen in the direction of the arrow on the line D-D in the figure, and FIG. 8 is a vertical cross-sectional view seen in the direction of the arrow on the line E-E of FIG. Is a vertical sectional view showing the relationship between a hard roll, a horizontal roll, and an H-shaped steel when H-shaped steel is rolled by a universal rolling mill. Fig. 10 is a vertical cross-section of a horizontal roll with a spacer for adjusting the roll barrel length. The figure is shown. 1 ... Horizontal roll 2 ... Roll chock (operating side) 3 ... Roll chock (driving side) 4 ... Cartridge 5-1 ... Roll body (operating side) 5-2 ... Roll body (driving side) 10 ... Roll support device 11 ... 1st support stand 12 ... 2nd support stand 13 ... Slide wedge type jack 15 ... Rotating device 16 ... Turning stand 18-1, 18-2, 19-1, 19-2 ... Laser irradiation light source 70 ... Roll reassembly Device 80… Screw-up type jack 110… Roll cylinder length variable device X-1, X-2, Y-1, Y-2… Distance measurement points on roll neck surface

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-63-118606 (JP, A) JP-A-64-31507 (JP, A) JP-A-61-262407 (JP, A) JP-A-2- 284710 (JP, A)

Claims (1)

[Claims] 1. A roll cylinder is divided into a driving side and an operating side, and relative movement is possible along the axial direction of the roll so that the roll chock can be moved toward and away from each other. An apparatus for off-line rearrangement of a horizontal rolling roll having a variable rolling width, in which a roll chock is provided with the cartridge for relative movement, the height of the roll from at least two reference points in the axial direction of the roll and at least 2 in the axial direction of the roll. A measuring device for measuring a horizontal roll position from a reference point of a point; an elevating device for respectively supporting the bisected roll cylinder, and capable of elevating at least one side of the bisected roll cylinder; A roll support having an elevating device for integrally raising and lowering the divided roll cylinder, and a turning table for integrally rotating the divided roll cylinder in a horizontal plane. Device, a chock support device that supports the chock, and has a lifting device and a moving device in the roll axis direction, a rotation device that rotatably supports the cartridge, and rotates the cartridge, a lifting device, and a roll axis direction. A horizontal carriage roll recombining device having a variable rolling width, which comprises a cartridge carriage having a moving device, a roll coupling, and a coupling support device having an elevating device and a moving device in the roll axial direction.