JPH0452019A - Guiding device for cooling flange of rolled shape - Google Patents

Abstract

PURPOSE:To make the impact soft force when the shapes contacts and collides with the vertical roller and to prevent the device from being damaged by arranging the swing-moving center of the other end side of lever from the rotary center of vertical roller of one side of lever to the shapes side. CONSTITUTION:One end of the levers 4, 4A are set at the rotation center 6, 6A positions of the vertical rollers 5, 5A, and the other end is made to the swing-moving centers 3, 3A, and the swing-moving centers are arranged from the center of the vertical roller to the shape 1 side. Therefore, by swinging the levers 4, 4A against the load of both directions of the shape carrying direction, the interval between the cooling nozzle and the flange surface of the shape 1 is kept constant, and at the same time, the impact force when the shape 1 contacts and collides with the vertical rollers 5, 5A is relieved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rolling shape for smoothly cooling and guiding the shaped steel when the shaped steel is transported in the rolling process of the shaped steel. This invention relates to a guide device for cooling steel flanges.

[Conventional technology]

When hot rolling steel sections with flanges, such as H section steel, It is known that web waves and the like are also generated. The main reason for this is that the wall thickness of the web and flange in the cross section of the rolled material is different, which causes a difference in heat capacity during or after rolling, and the thinner part (generally the web part) cools first. This is because after cooling of the thin wall portion is almost completed, the thick wall portion (generally the flange portion) shrinks upon cooling, and the shrinkage stress of this thick wall portion also has a large effect on the thin wall portion. As a means for solving such conventional problems, there is a method disclosed in, for example, Japanese Unexamined Utility Model Publication No. 1-139916.

This guide device for cooling the flange of rolled section steel is shown in Fig. 14.
Referring to FIGS. 15 and 16 showing side views of the device, a cooling nozzle 32 and a constant pressure applying device 33 are connected to a frame 31 that is provided on both sides of an H-beam 35 transfer line 40 and is movable in the left and right direction. It has a vertical guiding roller 34 which is pivotally supported so as to be swingable and rotatable.

[Problem to be solved by the invention]

However, in the conventional guide device described above, the link piece 3
Since the center of rotation of the vertical roller 34 provided on the other end side of the link piece 36 is located on the H-beam 35 side from the pivot center provided on one end of the link piece 36, the H-beam in the direction of the arrow shown in FIG. For the load in the transfer direction of 35, the vertical roller 34 is IJ IJ-
However, when moving in the opposite direction to the arrow, a locking force is applied by the H-section steel 35, so the vertical rollers 34 do not provide relief against the contact/collision load, resulting in the following problem.

(1) Load is concentrated on the pin at the center of the swing, making it susceptible to damage.

(2) If a vertical roller device is configured to withstand contact and impact forces, the device will become large and uneconomical.

(3) It is uneconomical to construct a frame that can withstand contact and impact forces.

(4) If the material curves due to unbalanced cooling during cooling of the shaped steel, an abnormal load will be applied to the vertical roller device, making it impossible to transport the shaped steel and at the same time damaging the frame.

Furthermore, in the conventional equipment configuration example shown in FIG. 16, side guides 43a and 43b are provided on the front and rear surfaces of the rolling mill, and this portion is equipped with a water cooling device (cooling nozzle).
is not installed, and the water cooling system is installed at the rear of the part outside the side guide.

This is because when a water cooling device is installed in the side guide portion, the conventional vertical roller device shown in Fig. 14 cannot reef properly against a load in one direction. Conventional vertical roller equipment could not be used. Therefore, there was no means to maintain a constant distance between the cooling nozzle and the flange surface of the section steel, and it was impossible to mount a water cooling device on the side guide. As a result, the overall line length has become longer.

Furthermore, even if a water cooling device (cooling nozzle) is installed on the side guide, it is not possible to install a vertical roller device, so it is not possible to maintain a constant distance between the cooling nozzle and the flange surface of the section steel. Water cooling control was not possible.

The present invention provides a flange cooling guide for rolled shaped steel that reduces the impact force when the shaped steel contacts and collides with the vertical rollers, reduces equipment damage, shortens the line length, and allows smooth cooling and transportation of the shaped steel. It provides equipment.

[Means to solve the problem]

The guide device for cooling a flange of a rolled section steel of the present invention is provided along the front and rear surfaces of a section rolling mill, or along both sides of a rolled material transfer line on either the front or rear side, and is perpendicular to the transfer line. This is a guide device for cooling the flange of rolled shaped steel, which is equipped with a vertical roller that freely moves forward and backward in the width direction of the rolled material by an actuator mounted on a frame that can move forward and backward in the direction, and a lever installed between the frames. One end of the lever is provided at the center of rotation of the vertical roller, the other end of the lever is the center of swing, and the center of swing is located closer to the section steel than the center of rotation of the vertical roller. It was attached to. In addition, the actuator is mounted on a frame that is installed along the front and rear surfaces of the section rolling mill, or both sides of the rolled material transfer line on either the front or rear sides, and is movable in a direction perpendicular to the transfer line. Shock absorbers are provided on the vertical rollers that move freely forward and backward in the width direction of the rolled material, and on the bearings for the vertical rollers that support the vertical rollers.

[Effect]

According to the flange cooling guide device for rolled steel sections of the present invention,
By arranging the center of rotation of the vertical roller on one end of the lever and the center of swing of the other end of the lever on the shape steel side, the lever swings in response to loads in both directions of the shape steel transfer, and the cooling nozzle and shape While maintaining a constant distance from the steel flange surface, the impact force when the shaped steel contacts and collides with the vertical rollers is softened.

In addition, by providing a shock absorber on the bearing for the vertical roller that holds the vertical roller, the distance between the cooling nozzle and the flange surface of the section steel can be kept constant, and at the same time, the impact force when the section steel contacts and collides with the vertical roller is relieved.

〔Example〕

Embodiment 1 FIG. 1 is a plan view of a guide device showing a first embodiment of the present invention, FIG. 2(a) is a sectional view taken along the line II in FIG. FIG. 2 is a view taken along the line ■-■ in FIG. 2(a).

In the figure, side guide frames 2, 2^ are provided along the flow of the section steel 1. The flow direction of the section steel 1 is arbitrary. This side guide frame 2.2A has a bin 3.
, 3A, a lever 4.4A is swingably provided,
At the other end of this lever 4, 4^ there is a vertical roller 5.5 that can be rotated freely.
Eight are provided. And the spindle 6 of the vertical rollers 5, 5A
, 6A can be pushed toward the shape al by a frame 7.7^ and a cylinder 8.8A as an actuator. At this time, the lever 4.4A swings about the pin 3.38, and the vertical rollers 5, 5A rotate freely according to the flow of the shaped steel 1. Here, the bins 3, 3A, which are the pivot centers of the levers 4, 4A, are arranged on the shape @1 side by a distance e from the support shafts 6.6A, which are the rotation centers for the vertical rollers 5, 5. The structure is such that the levers 4, 48 can freely swing no matter which direction a load is applied to the vertical rollers 5, 5A.

Embodiment 2 A second embodiment of the present invention is shown in FIG. In this embodiment, the bin 3.3^ portion, which is the pivot center of the levers 4, 4A, is attached to a sliding body 9, and this sliding body 9 is surrounded by a frame 10,
A disc spring 11 serving as a shock absorber is provided in the gap between the sliding body 9 and the frame 10 in the same sliding direction as the direction in which the shaped steel 1 is transferred.
IIA is intervening. As a result, when the shaped steel 1 contacts and collides with the vertical rollers 5 from the right side, the impact force is absorbed by the disc spring 11 via the lever 4, and the shaped steel 1 contacts and collides with the vertical rollers 5 from the left side. When this happens, the impact force is absorbed by the disc spring 11^ via the lever 4 and alleviated. Regarding other parts, only the reference numerals are given and the explanation is omitted.

Embodiment 3 A third embodiment of the present invention is shown in FIG. In this embodiment, a disc spring 12 is interposed in the connection between the cylinder 8 as an actuator and the frame 7 of the vertical roller 5, and the sliding body 14 attached to the cylinder rod 13 is slid within the frame 15. When the shaped steel 1 contacts and collides with the vertical rollers 5 from both the left and right directions, the component force in the width direction of the shaped steel 1 is absorbed and alleviated by the disc spring 12 via the frame 7. There is. Regarding other parts, only the reference numerals are given and the explanation is omitted.

Embodiment 4 A fourth embodiment of the present invention is shown in FIG. In this embodiment, a vertical roller 5 that can move forward and backward and swing freely in the width direction of the section steel 1 is provided, and a frame 16 that supports the vertical roller 5 and holds a bearing for the vertical roller, and an actuator attached to the frame 16. A cylinder 8 is installed across the cylinder. and,
A disc spring 1 is attached to the frame 16 so as to absorb impact force due to contact or collision in any flow direction of the shape ai11.
7.1? A, 18° 18A is installed, and this disc spring 17
．． 17^, 18.18A to frame 19.19A, 20
．． It is surrounded by 20^, and a disc spring of 17.17^.

Slide bodies 21, 21^, 22 in the operating direction of 18, 18A
, 22^ are provided, and these sliding bodies 21, 21^, 22.2
Guide blocks 23, 24 are provided along the direction in which 2A slides by the cylinder 8. As a result, the impact force when the shaped steel 1 contacts and collides with the vertical roller 5 from the right side in the figure is absorbed by the disc springs 17 and 18, and the impact force when the shaped steel 1 contacts and collides with the vertical roller 5 from the left side is absorbed by the disc springs 17 and 18. The impact force is transferred to the disc spring 17^, 1
It is designed to absorb and relax at 8A.

Example 5 A fifth example of the present invention is shown in FIG. In this first embodiment, a relief mechanism 25 is provided in the piping of the cylinder 8 as an actuator, and when the section steel 1 is bent due to unbalanced cooling while the section steel 1 is being cooled, an abnormal load is applied to the vertical rollers 5. The vertical rollers 5 are configured to avoid the action before acting.

In addition, the relief machine in the diagram! Only a part of 25 is shown and the rest is omitted. In addition, other parts of the device are given only reference numerals and their explanations are omitted.

Embodiment 6 A sixth embodiment of the present invention is shown in FIG. In this embodiment, an accumulator 26 is provided adjacent to the cylinder 8, and the surge pressure generated in the piping when the section steel 1 collides with the vertical roller 5 is absorbed by the accumulator 26. It is designed to absorb and alleviate the impact force acting on the

Note that this accumulator 26 is similar to the IJ of the fifth embodiment.
It can also be used for the same function as the IJ-fu mechanism 25.

Embodiment 7 A seventh embodiment of the present invention is shown in FIG. In this embodiment, vertical rollers 5 are arranged in a staggered manner along the conveying direction of the section steel 1, and when the section steel 1 is curved due to unbalanced cooling during the cooling of the section steel 1, it can be straightened. The aim is to ensure appropriate materials.

Embodiment 8 An eighth embodiment of the present invention is shown in FIG. In this embodiment, the vertical rollers 5 are opened and closed by tracking control of the shaped steel 1, and the vertical rollers 5 are retracted before the tip of the shaped steel 1 passes in front of the vertical rollers 5. By configuring the vertical roller 5 to close immediately after It passes, the tip of the shape @1 is prevented from colliding with the vertical roller 5.

In addition, in the case of materials that do not undergo flange water cooling of section steel, such as rolled channel steel, as shown in Figs. 10 and 11,
In order to carry out rolling while sequentially changing the rolling direction of the rolled material and the position of the roll hole, it is necessary to shift the rolled material in the direction perpendicular to the line for each rolling bus using side guides. 10th
In the figure, (a), (b) and (C) are the 1st pass, 2nd pass
Fig. 10(d) shows the rolling direction, the position of the roll hole mold, and the moving position of the side guide at the first bus and the third bus.
shows a state in which the rolled material is being shifted by the side guides 43. A, b, and C in FIG. 11 show rolling pass lines in the first pass, second pass, and third pass. At this time, as shown in FIG.
If it protrudes from the surface, a concentrated shifting force will act on the material, causing unfavorable local deformation in that area, so in this case,
Vertical roller 5 must be moved backwards. but,
If it is completely retreated, the tip of the shaped steel 1 will plunge into the space during movement in the rolling direction, causing breakage of the shaped steel 1 and damage to the equipment. In order to solve this problem, when the vertical roller 5 is retreating, the side guide 4 is
Use by retreating until it is flush with the third side. This allows it to have the same functionality as a conventional side guide without holes that does not include vertical rollers.

The vertical roller device shown in any of the above embodiments 1 to 8 is mounted on the side guide 43 installed on the front and rear surfaces of the section steel rolling v&45 as shown in FIG. 10(a), and then Incorporate a water cooling device (water cooling nozzle) into the

In each of the above embodiments, a cooling device (
The water-cooled nozzle) is the same as the conventional example, so illustration and explanation are omitted.

〔Effect of the invention〕

Since the present invention has the above configuration, it has the following effects.

(1) The impact force when the shaped copper contacts and collides with the vertical rollers is softened, resulting in less damage to the equipment and less frequent repairs, allowing for smoother operations.

(2) Similar to (1), since the impact force when the shaped steel contacts and collides with the vertical rollers is softened, there is no need to increase the size of the device to withstand the impact, and economic efficiency is improved.

(3) Stable transfer of shaped steel is possible, and the distance between the water cooling device (water cooling nozzle) and the flange surface of the shaped steel is kept constant, ensuring reliable and uniform cooling, improving the quality of the shaped steel do.

(4) Since the vertical rollers can oscillate in response to loads from either direction of the section steel, it can be used as a guide device for cooling the flange of rolled section steel installed on the front and rear sides of a reverse rolling mill. It is also effective against

(5) Since a water cooling device can be incorporated into the side guides on the front and rear surfaces of the rolling mill, the line length can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a guide device showing a first embodiment of the present invention, FIG. 2(a) is a sectional view taken along the line II in FIG.
) is a view taken along the line ■-■ in FIG. 2(a), FIG. 3 is a plan view of the second embodiment of the present invention, FIG. 4 is a plan view of the third embodiment of the present invention, and FIG. 6 is a plan view of the fifth embodiment of the present invention, FIG. 7 is a plan view of the sixth embodiment of the present invention, and FIG. 8 is a plan view of the fourth embodiment of the present invention. FIG. 9 is a plan view of the main parts of the seventh embodiment, and FIG. 9 is a plan view of the main parts of the eighth embodiment of the present invention. FIG. 10 is a diagram showing the arrangement of the side guides and the movement position of the side guides during reverse rolling, and FIG. 11 is a diagram continuously showing the flow of the section steel during reverse rolling. FIGS. 12 and 13 are diagrams showing the vertical rollers of the present invention in an extended state and a retracted state. Fig. 14 is a plan view of essential parts of a conventional guide device for cooling a flange of rolled sections, Fig. 15 is a side view of essential parts of the guide device for cooling a flange, and Fig. 16 is a layout of a conventional rolling section steel line. Fig. 3(a) shows the overall layout of the conventional example, Fig. 3(c) is a partial plan view of the frame, and Fig. 3(c) is a cross-sectional view taken along line A-A in Fig. 1(a). shows. 1; Shaped steel 2.2A: Side guide leaf 3.3^: Pin 4゜5.5^: Vertical roller 6゜7.7A: Frame 8゜9: Sliding body 10 11, 11^: Disc spring 12 13 Nigilinder rod 14 15: Frame body 16 17, 1? A, 18.18A: Belleville spring 19, 19^,
20.2OA + Frame 21, 21^, 22.22A: Sliding body 23 24 Ni guide block 25: Relief mechanism 26 Frame 48 Two Lever 6A: Support shaft 8A double frame body Two plate springs: Sliding body: Frame: Accumulation rake 30: H-shaped steel transfer line 31: Frame 33: Constant pressure application device 35: H-shaped steel 37: Cooling device 39: Final finishing rolling mill 40: Rolling line 41; Hot sawing machine 42: Cooling bed 43: Side guide 44 :Transport roller
45: Shaped steel rolling mill 32: 34: 36 Near cooling nozzle guiding vertical roller link piece 37b; Frame patent applicant Nippon Steel Corporation Representative Masu Kobori Figure Figure 6 → Figure 16 (b) A (C)

Claims (1)

[Claims] 1. Provided along the front and rear surfaces of the section steel rolling mill, or both sides of the rolled material transfer line on either the front or rear side, and arranged so as to be movable in a direction perpendicular to the transfer line. A guide device for cooling a flange of rolled section steel, comprising a vertical roller that freely advances and retreats in the width direction of a rolled material by an actuator mounted on a frame, and a lever provided between the vertical roller and the frame. , one end of the lever is provided at a rotational center position of the vertical roller, the other end of the lever is a swinging center, and the swinging center is installed so as to be located closer to the shaped steel than the rotational center of the vertical roller. A guide device for cooling a flange of rolled section steel. 2. An actuator mounted on a frame that is installed along the front and rear surfaces of a section steel rolling mill, or both sides of the rolled material transfer line on either the front or rear sides, and is movable forward and backward in a direction perpendicular to the transfer line. A guide device for cooling a flange of a rolled section steel, characterized in that a shock absorber is provided on a vertical roller that freely advances and retreats in the width direction of a rolled material, and on a bearing for the vertical roller that supports the vertical roller.