JPH08257621A - Device for cooling wide flange shaped steel - Google Patents

Abstract

PURPOSE: To provide a cooling device for wide flange shaped steel, capable of always keeping the distance between the cooling device and the surface to be cooled constant even in the case where the size of the wide flange shaped steel is changed or in the case where the wide flange shaped steel has bending at the right and left side or the upper and lower part. CONSTITUTION: This device is provided with a guide device 2 composed of one pair of guide members 3a, 3b connected with a right and left side restoring means 5 and an upper and lower part restoring means 10 and inserted between a web 1b and flanges 1a, 1a of the wide flange shaped steel 1 and the cooling device 20 followed to this guide device 2 and positional-controlled with the guide device 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for H-section steel, and more particularly, when the size of the H-section steel to be cooled is changed, or the H-section steel has left and right bends and up and down bends. Also relates to an H-section steel cooling device that can always keep the distance between the cooling device and the surface to be cooled constant.

[0002]

2. Description of the Related Art H-section steel was cut by a hot shear after rolling and air-cooled in a cooling bed. However, recently, H-section steel of higher performance, that is, excellent material properties are required. As a result, the H-section steel is heat-treated. In this heat treatment, the H-section steel at 800 ° C. or higher after rolling is cooled with water and then tempered.

In such heat treatment of H-section steel after rolling, especially in cooling the flange, it is essential to keep the distance between the cooling device (cooling nozzle) and the surface to be cooled constant. Conventionally, in order to keep the above distance constant,
There is a guide device in which a roller or the like is in contact with the outer surface of the flange of the H-section steel so that the entire cooling device follows the bending of the H-section steel.

As a guide device for the cooling device as described above,
Japanese Utility Model Laid-Open No. 1-139916 or Japanese Patent Laid-Open No. 4-52
There is an invention disclosed in Japanese Patent No. 019. The guide device disclosed in these publications guides the cooling device by following the movement of the guide device in the width direction with respect to the left and right bends of the H-section steel by pressing the roller against the outer surface of the flange of the H-section steel. However, it is not possible to deal with the vertical bending of the H-section steel.

Further, in Japanese Patent Laid-Open No. 1-205033, in order to prevent the H-section steel from bending up and down, the H-section steel is restrained up and down to be cooled. Has a problem that it is difficult to deal with.

Furthermore, recently, H having a large flange thickness is used.
Regarding shaped steel, not only the outer surface cooling of the flange so far, but also the inner surface of the flange needs to be positively cooled. For example, Japanese Patent Laid-Open No. 6-297028 discloses H
A cooling device is described in which a cooling header is inserted between the inner surfaces of the upper portion of the flange of the shaped steel to inject cooling water.

[0007]

[Patent Document 1] Japanese Patent Application Laid-Open No. 6-29702
In the cooling device described in Japanese Patent Publication No. 8, in the case where the size of the rolled H-section steel is changed because a cooling header is inserted between the inner surfaces of the upper flanges of the H-section steel to inject cooling water. Requires replacement of the cooling header according to the change in size or adjustment of the distance between the cooling header and the flange, and the production line must be stopped. On average, five workers required about 1-2 hours to replace such a cooling header.

When the H-section steel is rolled to the right or left or rolled up or down, in order to cope with this, the cooling header follows the bend of the H-section steel to the left and right and up and down. It is necessary to keep the distance between the cooling header and the web and the distance between the cooling header and the flange constant at all times, but such a measure has not been taken. For this reason, unevenness of the material occurs due to uneven cooling, and it is difficult to obtain a high quality H-section steel.

The present invention has been made in order to solve the above-mentioned problems, and when the size of the H-section steel is changed, or when the H-section steel is bent left or right or up and down, a cooling device is provided. The purpose of the present invention is to obtain a cooling device for H-section steel that can keep the distance to the surface to be cooled almost always constant.

[0010]

[Means for Solving the Problems]

(1) A cooling device for H-section steel according to the present invention comprises a pair of guide members connected to the horizontal restoring means and the vertical restoring means, and is inserted between the H-section steel web and the flange. Following this guide device, a cooling device whose position is controlled by the guide device is provided.

(2) In the cooling apparatus for H-section steel according to the above (1), the apparatus is installed along the H-section steel conveying line having a plurality of nozzles, and the position is controlled by a guide device to outside the flange of the H-section steel. It is provided with a cooling header for cooling the side surface.

(3) In the cooling apparatus for H-section steel according to the above (1), a cooling header having a plurality of nozzles, which is installed below the conveying line for H-section steel, and in which the angle of the nozzles is controlled by a guide device, is provided. Be prepared.

(4) In the cooling device for H-section steel according to the above (1) to (3), the front portion of the surface of the guide member that contacts the H-section steel is H.
It is formed in a bow shape away from the shaped steel. (5) Further, in the cooling device for H-section steel according to the above (1) to (4), a plurality of rolls are provided on the surface of the guide device in contact with the H-section steel.

[0014]

[Action]

(1) When the rolled H-section steel is conveyed on the conveying line, the guide member of the guide device is guided into the groove portion formed by the web and the flange of the H-section steel, and then the cooling device forms the groove. Guided into the profile. At this time, both side surfaces of the guide member are in sliding contact with the inner surface of the flange by the left and right restoring means, and the lower surface is in sliding contact with the web by its own weight. Then, the cooling device sprays cooling water to cool the inner surface of the flange and the upper surface of the web.

When the H-section steel has a bend in the left-right direction, the guide device moves left and right along this bend by the left-right restoring means, and the cooling device also moves left and right under the control of the guide device to move to the inner surface of the flange. Keep the distance constant. When the web has a vertical bend, the guide device moves up and down along the bend by the vertical restoring means, and the cooling device also moves up and down under the control of the guide device to keep the distance from the upper surface of the web constant. maintain.

(2) The cooling header moves left and right in response to the movement of the guide device in (1) above, so that the distance from the outer surface of the flange of the H-section steel is always kept constant. Further, it moves up and down and is always held at a position facing the fillet portion. (3) The nozzle of the cooling header is moved or rotated in response to the movement of the guide device of (1) to cool the lower surface of the H-section steel.

(4) By forming the surface of the guide member constituting the guide device in contact with the H-section steel into an arcuate shape, it is possible to easily enter the groove-shaped portion of the conveyed H-section steel, and The contact area with the conveyed H-section steel is reduced to reduce the resistance. (5) Since the roll is provided on the surface of the guide device which is in contact with the H-section steel, the H-section steel can be smoothly transported and is not scratched.

[0018]

【Example】

Example 1 FIG. 1 is a perspective view schematically showing a first example of the present invention. In the figure, 1 is an H-shaped steel that is continuously conveyed on a conveying line after rolling, and 2 is a guide device of a cooling device 20. Reference numerals 3a and 3b are a pair of guide members that constitute the guide device 2. The inner surfaces facing each other are formed substantially parallel to each other, and the outer surfaces are formed in an arc shape in which the front is away from the H-shaped steel 1, and the bottom is also front. It is formed in an arc shape away from the H-shaped steel 1 (see FIG. 2). Then, as shown in FIG. 2, a plurality of stainless steel rolls 4 (diameter 50 mm in the embodiment) are mounted on the outer side surface and the bottom surface. A shock absorbing damper 4a may be provided on the shaft of the roll 4.

Reference numeral 5 denotes a restoring device which is a left and right restoring means interposed between the guide members 3a and 3b. For example, as shown in FIG. 2, a plurality of bottomed holes 7 provided in a block-shaped member 6 are provided. ,
One end of the rod 8 is slidably inserted through the spring 9, the other end of the rod 8 is fixed to the guide members 3a and 3b, respectively, and both ends of the member 6 are slidable to the guide members 3a and 3b. It has been fitted. Thereby, the guide member 3a,
3b is always biased outward.

Reference numeral 10 is a vertical moving device which is a vertical restoring means, and comprises a piston 11 and a cylinder 12, and one end of the piston 11 is fixed to a member 6 of the restoring device 5. 1
Reference numerals 4a and 14b are guide rails provided above the conveying line of the H-shaped steel 1 and orthogonal thereto, and the cylinder 12 is a left and right moving member 13 slidably installed on the guide rails 14a and 14b via bearings. Installed on. In this state, the guide members 3a and 3b are suspended from the left and right moving member 13 by their own weight.

Reference numeral 20 denotes, for example, a pair of perforated plate type coolers 21.
a, 21b (length is 2 m in the embodiment), the width thereof is narrower than the width of the guide device 2, and the bottom portion is located above the bottom portion of the guide device 2. Both coolers 21a, 2
1b is a restoration device 5 having the same structure as the restoration device 5 of the guide device 2.
Similarly, the piston 11 of the vertical movement device 10a is fixed to the restoration device 5, and the cylinder 12 is attached to the horizontal movement device 13a provided on the guide rail 14b. And this cooler 21
The a and 21b are connected to the guide members 3a and 3b of the guide device 2 via the rods 15a and 15b, respectively. In this state, the coolers 21a and 21b are suspended from the left and right moving member 13a by their own weight.

The guide device 2 and the cooling device 20 described above are connected to each other by a force corresponding to their own weight so that the guide device 2 and the cooling device 20 can move in the left and right and up and down directions with a slight force applied to the guide device 2.
It is pre-balanced at 0 and 10a. The mechanism for balancing the self-weight is not limited to this embodiment, and other means such as balancing the force using a balance weight and a pulley may be used.

The guide members 3a, 3b and the cooler 21 described above.
The connection with a and 21b is not limited to the rods 15a and 15b. For example, the position sensor installed in the guide device 2 detects the position, and the cooling device 20 is electrically controlled based on the output signal. , Other means may be used. In addition, the cooling device 20 includes perforated plate coolers 21a and 2a.
Although the case where 1b is used is shown, a cooler of another system may be used.

Next, the operation of the present embodiment configured as described above will be described with reference to FIGS. As shown in the figure, the guide device 2 and the cooling device 20 are provided with the left and right moving devices 13, 13a.
Are supported on the transportation line L of the H-section steel 1 and are positioned at the lowest position of the vertical moving devices 10 and 10a by their own weight to be balanced, and are urged by the restoring devices 5 and 5a. It is located on the outermost side.

Now, when the rolled H-section steel 1 is conveyed in the arrow direction on the conveying line L via the finishing roll 25,
First, the guide members 3a, 3b of the guide device 2 are guided into the groove portions formed by the upper inner surfaces of the flanges 1a, 1a of the H-shaped steel 1 and the upper surface of the web 1b, and subsequently, the cooler 21a of the cooling device 20. , 21b are guided into this groove. At this time, both side surfaces of the guide members 3a, 3b are urged by the restoring device 5 so that the rollers 4 thereof are in sliding contact with the upper inner surfaces of the flanges 1a, 1a, and the lower surface of the rollers 4 slides on the upper surface of the web 1b by its own weight. Since they are in contact with each other, the H-section steel 1 can move smoothly. The coolers 21a and 21b face the upper inner surfaces of the flanges 1a and 1a and the upper surface of the web 1b at a predetermined distance, and spray cooling water to eject the flanges 1a and 1b.
The upper inner surface of a and the upper surface of the web 1b are cooled. In addition,
The coolers 21a and 21b are preferably designed so as to maintain a distance of about 50 mm from the surface to be cooled.

By the way, when the H-section steel 1 is bent in the left-right direction, the guide members 3a and 3b of the guide device 2 are moved by the restoring device 5.
By this action, the left and right move along this bend, and the coolers 21a and 21b connected thereto also move left and right following the movement of the guide device 2 by the restoring device 5a, and the flange 1
The distance between the upper inner surface of a and 1a is always maintained at a predetermined distance.

Similarly, when the web 1b has a vertical bend, the guide members 3a and 3b move up and down along the bend, and the vertical moving device 10 absorbs the movement.
Then, the coolers 21a and 21b connected thereto also move in the vertical direction following the movements of the guide members 3a and 3b, and always maintain a predetermined distance between them and the upper surface of the web 1b.

With the cooling device 20 provided with the guide device 2 according to this embodiment, the length is 23 m, the width is 542 mm, and the height is 490.
mm, web thickness 40 mm, flange thickness 45 mm after rolling H-section steel 1 was cooled. In addition, in this H-section steel 1,
There is a 30mm bend to the left and right per 10m, and 2 up and down.
There was a 5 mm bend. According to the execution results, it was possible to cool the H-section steel 1 without any hindrance, and it was possible to maintain the distance between the coolers 21a and 21b and the surface to be cooled within 50 mm ± 3 mm. Further, the upper inner surfaces of the flanges 1a and 1b and the upper surface of the web 1b were not scratched at all.

Subsequently, the size of the H-section steel 1 was changed, and the length was 34 m, the width was 700 mm, the height was 300 mm, and the web thickness was 2.
The H-section steel after rolling having a thickness of 4 mm and a flange thickness of 28 mm was cooled. It should be noted that this H-section steel has 35
There was a bend of 30 mm in the vertical direction and 30 mm in the vertical direction. When the width is changed, the guide members 3a, 3b and the coolers 21a, 21b move quickly in the left-right direction and upward, maintain the distance between the coolers 21a, 21b and the surface to be cooled, and the H-section steel 1 passes without any trouble. Then
It was able to cool. The distance between the coolers 21a and 21b and the surface to be cooled is maintained within 50 mm ± 4 mm,
There were no scratches on the surface to be cooled.

Embodiment 2 A second embodiment of the present invention is shown in FIG. In the present embodiment, assuming that the cooling time of the H-section steel 1 is extended, or the conveying speed of the H-section steel 1 is increased in order to improve the productivity, the cooling device 20 described in the first embodiment is used. It is a long one. That is, the guide device 2 is provided with two pairs of cooling devices 20a, 20a including a pair of perforated plate coolers 21a, 21b.
It is a combination of b.

In this embodiment, the cooling devices 20a and 20b each have a length of 1.5 m, and the gap between the cooling devices 20a and 20b is 50 mm. This is because if a long cooling device is used, even if the H-section steel 1 is slightly bent, the front end and the rear end of the cooling device may come into contact with the H-section steel 1, so the cooling device is divided to prevent this. Then, the positions of the respective cooling devices 20a and 20b are controlled to prevent contact with the H-section steel. The cooling device 20
As shown in FIG. 5, a stainless steel roll 4 (50 mm in the embodiment) is attached to the outer surface and the bottom surface of each of the coolers 21a and 21b constituting a and 20b, and the flanges 1a and
The contact between the inner surface of the upper portion of 1b and the upper surface of the web 1b is made smooth. In this case, a shock absorbing damper 4a may be provided on the shaft of the roll 4.

When the H-section steel was cooled according to this embodiment, the distance between the cooling devices 20a and 20b and the surface to be cooled was 50.
It could be maintained within mm ± 4 mm, and there was no scratch on the cooled surface.

Embodiment 3 FIG. 6 is a schematic diagram of the third embodiment of the present invention. In this embodiment, a plurality of sets (two sets are shown in the figure) are provided with a set including the guide device 2 shown in the second embodiment and two pairs of cooling devices 20a and 20b. . Thereby, the cooling time of the H-section steel 1 can be further extended, or the conveying speed of the H-section steel can be increased to further reduce the cooling time.

Fourth Embodiment FIG. 7 is a perspective view schematically showing a fourth embodiment of the present invention. The parts having the same functions as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. 26 is a conveying roll for conveying the H-section steel 1, 30 is a side of the outer surface of the flange 1a of the H-section steel 1, and is arranged along the substantially central portion (fillet portion 1c) in the height direction of the flange 1a. With the cooling header, the flange cooling nozzles 31a, 31b,
31c and fillet portion cooling nozzles 32a and 32b are alternately provided at a predetermined distance from the flange outer surface 1d.

Reference numeral 16 is a displacement detector attached to the cylinder 12 of the vertical movement device 10 of the guide device 2 and detects the displacement of the piston 11. Reference numerals 17 and 17a denote rod driving devices which are attached to the guide rails 14a and 14b via the second left and right moving devices 13b and 13c above the cooling water head 30 and can be moved vertically to the rod driving devices 17 and 17a. The tip ends of the rods 18 and 18 a mounted on are connected to the cooling water head 30. The vertical moving devices 13 and 13b, 13a and 13c are respectively a belt,
They are connected by rods 19 and 19a. Although not shown, similar equipment is provided on the outer surface side of the other flange 1a.

In the present embodiment configured as described above,
In the case of the first embodiment, the H-shaped steel after rolling is conveyed and the guide device 2 and the cooling device 20 cool the upper inner surfaces of the flanges 1a, 1a of the H-shaped steel and the upper surface of the web 1b. Is the same as. At this time, cooling water is sprayed from the flange cooling nozzles 31a to 31c and the fillet portion cooling nozzles 32a and 32b provided in the cooling header 30 to cool the outer surface of the flange 1a.

When the H-section steel 1 being cooled has a bend in the left-right direction, the guide device 2 and the cooling device 20 move along this, and the left-right moving devices 13, 13a also move in the guide rails 14a ,.
Move along 14b. When the left and right moving devices 13 and 13a move, the left and right moving devices 13b and 13c and the rod driving devices 17 and 1 connected to the left and right moving devices 13 and 13a by belts 19 and 19a.
7a also moves, and this movement moves the cooling header 30 through the rods 18 and 18a, and the flange cooling nozzle 31a
˜31c and fillet cooling nozzles 32a, 32b and the distance between the outer surface of the flange 1a are always kept constant.

Further, the H-section steel 1 has a vertical bending,
When the piston 11 moves up and down by the guide device 2 following this, the displacement is detected by the displacement detector 16, and an electric signal corresponding to the displacement amount is output and transmitted to the rod driving devices 17 and 17a. Receiving this signal, the rod driving devices 17 and 17a move the rods 18 and 18a up and down according to the displacement amount of the piston 11 and the cooling header 30 that is connected to the rods 18 and 18a, and move them to a position facing the fillet portion 1c. Hold.

The H-section steel 1 after rolling was cooled according to the present example configured as described above. The H-section steel 1 had a vertical bending of 45 mm per 10 m, but the flange cooling nozzles 31a to 31c and the fillet portion cooling nozzles 32a and 3a were used.
The distance between 2b and the surface to be cooled is within ± 6 mm in the height direction,
It was possible to maintain ± 5 mm in the width direction. As a result, the flange cooling nozzles 31a to 31c are displaced in the height direction,
Also, the temperature difference between the upper and lower sides of the flanges 1a, 1a due to the positional deviation of the fillet cooling nozzles 32a, 32b can be eliminated, and the material can be made uniform. Also,
Since the temperature difference between the upper and lower sides of the flanges 1a, 1a was eliminated, the bending that appeared after complete cooling was also extremely slight.

In the above description, the movements of the guiding device 2 and the cooling device 20 that follow the horizontal bending of the H-section steel 1 are transmitted to the rods 18 and 18a via the belts 19 and 19a, and the cooling header 30. However, the cooling header 20 may be moved by other mechanical or electrical means. Further, the displacement detector 16 detects the movement of the guide device 2 that follows the vertical bending of the H-section steel 1, and the rod drive devices 17 and 17a move the rods 18 and 18a up and down in response to the output signal. Although the case where the cooling header 30 is moved in the vertical direction is shown, the cooling header 30 may be moved by other electrical or mechanical means.

Embodiment 5 FIG. 8 is a perspective view schematically showing a fifth embodiment of the present invention. The parts having the same functions as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the guide device 2 of the first embodiment controls the angle of the lower cooling nozzle that cools the lower surface of the H-section steel 1 installed on the lower side of the transport roll 26.

In the figure, reference numeral 35 denotes a position detector attached to the guide device 2 for detecting the position of the guide device 2 in the width direction. An output signal of the position detector 35 is applied to the controller 36.
Outputs a control signal corresponding to the deviation amount of the guide device 2 and applies it to the motor 37. A cooling header 40 is installed below the transport roll 26 and cools the lower surface of the H-shaped steel 1, and a plurality of nozzles 41a, 41b, 41c are rotatably mounted at predetermined intervals. A bar 42 is connected to the nozzles 41a to 41c and is rotated by the motor 37.

In this embodiment constructed as described above,
When the guiding device 2 moves in the left-right direction in response to the bending of the H-shaped steel 1 in the left-right direction, the position detector 35 detects this and the output signal thereof is sent to the controller 36. The controller 36 outputs a control signal corresponding to the deviation between the reference position and the current position of the guide device 2, applies it to the motor 37, and drives it. This causes the bar 42 to control the control signal and thus the guiding device 2
The nozzles 41a to 41c which are rotated according to the moving amount of the nozzles 41a to 41c are controlled in angle.

According to this embodiment, the upper and lower parts of the H-section steel 1 can be cooled uniformly, and it is possible to easily cope with the deformation of the size of the H-section steel. In the above description, the position detector 35 attached to the guide device 2 detects the position of the guide device 2, and the motor 37 controls the angles of the nozzles 41a to 41c based on the detected position. The angle of the nozzles 41a to 41c may be controlled by this means.

[0045]

As is apparent from the above description, according to the present invention, the following effects can be obtained. (1) A guide device including a pair of guide members connected to the left and right restoring means and the up and down restoring means, which is inserted between the H-shaped steel web and the flange, and subsequent to this guide device, the position control is performed by the guide device. Since the H-section steel is cooled by the cooling device that is used, it is not necessary to stop the line and replace or adjust the cooling device even if the size of the H-section steel to be cooled is changed. It took an average of 5 people to replace the cooling device for 1 to 2 hours), and this can be automatically handled. Therefore, work efficiency can be significantly improved.

Further, even if the H-section steel to be cooled has a bend in the left-right direction or in the up-down direction, the guide device moves along with it, and the cooling device also moves following it, thereby cooling the cooling device and the cooled object. Since the distance to the surface is always kept substantially constant, the H-section steel can be cooled uniformly, nonuniformity of the material can be eliminated, and high-quality H-section steel can be obtained.

(2) The guide device of the above (1) is installed along an H-section steel conveying line having a plurality of nozzles,
Since the position of the cooling header for cooling the outer surface of the flange of the H-section steel is controlled, the effect of the above (1) can be obtained, and the temperature difference between the upper and lower sides of the flange can be eliminated and the material can be made uniform. By eliminating this temperature difference, it is possible to suppress the bending that appears after complete cooling.

(3) Since the guide device of the above (1) controls the angle of the nozzle of the cooling header having a plurality of nozzles and installed below the H-section steel, the effect of the above (1) is obtained. And has the ability to uniformly cool the top and bottom of the H-section steel,
It is possible to obtain H-section steel of a uniform material.

(4) H of the guide member of the above (1) to (3)
Since the front surface which contacts the section steel is formed in an arc shape in which the front portion is away from the H section steel, the guide device is smoothly inserted into the groove section formed by the flange and the web of the H section steel to be conveyed. Further, since the contact area between the guide device and the H-section steel is small, the resistance is small and the H-section steel can be smoothly transported.

(5) H of the guiding device of the above (1) to (4)
Since the plurality of rolls are provided on the surface in contact with the shaped steel, the H-shaped steel can be transported smoothly and the contact surface is not scratched.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a first embodiment of the present invention.

2A and 2B are a plan sectional view and a vertical sectional view of a main part of FIG.

FIG. 3 is an operation explanatory view of the first embodiment.

FIG. 4 is an explanatory diagram of a second embodiment of the present invention.

5A and 5B are a plan sectional view and a vertical sectional view of a main part of FIG.

FIG. 6 is an explanatory diagram of a third embodiment of the present invention.

FIG. 7 is a perspective view schematically showing a fourth embodiment of the present invention.

FIG. 8 is a perspective view schematically showing a fifth embodiment of the present invention.

[Explanation of symbols]

 1 H-shaped steel 2 Guide device 3a, 3b Guide member 4 Roll 5, 5a Restoring device 10, 10a Vertical moving device 13, 13a, 13b, 13c Horizontal moving device 14a, 14b Guide rail 15a, 15b Rod 16 Displacement detector 17, 17a Rod drive device 18,18a Rod 20 Cooling device 21a, 21b Cooler 30,40 Cooling header 35 Position detector 41a-41c Nozzle 42 bar

Claims (5)

[Claims] 1. An H that is rolled and conveyed on a conveyor line.
A cooling device for a shaped steel, which comprises a pair of guide members connected to a horizontal restoring means and a vertical restoring means, is inserted between an H-shaped steel web and a flange, and is connected to the guiding device. A cooling device for H-section steel, comprising a cooling device whose position is controlled by a guide device. 2. A cooling header, which has a plurality of nozzles, is installed along an H-section steel conveying line, and is position-controlled by a guide device to cool the flange outer side surface of the H-section steel. The H-section steel cooling device according to claim 1. 3. The H according to claim 1, further comprising a cooling header which has a plurality of nozzles and which is installed below an H-section steel conveying line and whose angle is controlled by a guide device. Shaped steel cooling system. 4. The H-section steel according to any one of claims 1, 2 and 3, wherein a surface of the guide member which is in contact with the H-section steel is formed in an arcuate shape whose front part is away from the H-section steel. Cooling system. 5. The cooling device for H-section steel according to claim 1, wherein a plurality of rolls are provided on a surface of the guide device which is in contact with the H-section steel.