JP2000167602A - Deformed channel steel, its manufacture, and slope way using such steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate or greatly reduce the welding for attaching a non-slip brace and a reinforcing material in production of a slope-way by manufacturing through rolling a deformed channel steel which has a web and a flange part and which has plural grooves and projections extending in the longitudinal direction of the channel steel on the outer side surface of the web. SOLUTION: The deformed channel steel 10 has a web 11 and a flange 12, which extends nearly at right angles from both ends in the width direction of the web 11 to the web 11. On the outer side face of the web 11, plural channels 13 and projections 14 are provided extending in the longitudinal direction of the channel steel (in the longitudinal direction of rolling). The channel 13, projection 14 and flange 12 are integrally manufactured by rolling. In the part corresponding to the projection 14 on the inner side face of the web 11, a recess for the purpose of raising the projection 14 is provided continuously in the longitudinal direction of the deformed channel steel 10, with the thickness of the recess given to the projection 14 side. A plurality of the deformed channel steels are assembled by arranging with the outer side faces of the flange 12 placed side by side to form the slope way 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deformed channel steel, a method for producing the same, and a slopeway using the deformed channel steel.

[0002]

2. Description of the Related Art As shown in FIG. 10, a car (slopeway 4) member which is installed on an upper floor or a lower floor such as a car carrier and which is installed with a slope as a parking place,
Rigidity is required for both slip prevention. For this reason, conventionally,
As shown in FIGS. 11 to 12, a small square steel or expanded metal is welded to the upper surface of the steel plate 1 (5 indicates a welded portion), and a non-slip 2 is formed. As the material 3, rigidity was obtained. As a non-slip steel plate, there is a checker plate or the like, but the protrusion height is insufficient and cannot be used to prevent a slopeway from slipping.

[0003]

However, the conventional non-slip structure such as a slopeway has the following problems. Welding a non-slip plate made of square steel or expanded metal to a steel plate requires many man-hours. Welding of aggregate (reinforcement) to a steel plate requires many man-hours. These man-hours increase the processing cost,
In addition, short delivery times cannot be accommodated. SUMMARY OF THE INVENTION It is an object of the present invention to provide a profiled channel steel, a method of manufacturing the same, and a slopeway using the profiled channel steel, which can eliminate or significantly reduce the number of welding steps for mounting a non-slip and reinforcing material. It is in.

[0004]

The present invention to achieve the above object is as follows. (1) It has a web portion and a flange portion, and has a plurality of grooves and projections extending in the longitudinal direction of the channel steel on the outer surface of the web portion.
A deformed channel steel produced by rolling. (2) The deformed channel steel according to (1), wherein the inner surface of the web portion has a recess at a portion corresponding to the inside of the protrusion on the outer surface for increasing the protrusion. (3) The deformed channel steel according to (1) or (2), wherein a portion of the web portion corresponding to the bottom wall of the groove on the outer surface is curved in a direction to increase the depth of the groove. (4) The deformed channel steel according to (1), wherein the protrusions are intermittent in the longitudinal direction of the deformed channel steel. (5) Among a plurality of rolls for rolling the channel steel, a roll for forming the outer surface of the web portion is provided with a plurality of irregularities extending in the circumferential direction, and a material is passed between the plurality of rolls. A method for producing a deformed channel steel, comprising rolling, by rolling, a deformed channel steel having a plurality of longitudinally extending grooves and projections formed on the outer surface of the web portion and formed by transferring the plurality of irregularities. (6) After the roll that forms the grooves and the protrusions, a protrusion intermittent roll having a plurality of irregularities extending in a direction perpendicular to the roll circumferential direction is arranged, and the web sent to the protrusion intermittent roll portion is provided. The protrusions are interrupted in the longitudinal direction by rotating and pressing against the outer surface of the web portion of the deformed channel steel having a plurality of grooves and protrusions extending in the longitudinal direction on the outer surface of the portion (5). ). (7) having a web portion and a flange portion, and having a plurality of grooves and projections extending in the longitudinal direction of the channel steel on the outer surface of the web portion;
A plurality of deformed channel steels produced by rolling, an assembly in which the outer surfaces of the flange portions of the deformed channel steels are aligned and arranged, the groove on the outer surface of the web portion, the direction in which the protrusion extends is orthogonal to the direction of the inclination. In this way, a slopeway that uses an inclined, deformed channel steel.

[0005] In the deformed channel steel according to the above (1), since the outer surface of the web portion has a plurality of grooves and projections, the grooves and projections can be used as slip stoppers in a direction perpendicular to the grooves and projections. . In this case, since grooves and projections are formed by rolling the deformed channel steel, the number of welding steps is reduced as compared with a case where a square steel or the like is welded to produce a non-slip. Further, the flange portion can be used as a reinforcing material as it is. In this case, since the flange portion is formed by rolling the deformed channel steel, the number of welding steps is reduced as compared with the case where the reinforcing material is welded. In the deformed channel steel of the above (2), since a recess is provided in a portion of the inner surface of the web portion corresponding to the inside of the protrusion on the outer surface, the meat is turned to the protrusion on the outer surface by the thickness of the recess. The height of the protrusion on the outer surface can be increased. As the projection height increases, the height from the web surface to the tip of the projection increases. As a result, the rubber tire or the like does not deform and contact the web surface, and the friction coefficient increases. In the deformed channel steel of the above (3), the portion of the web portion corresponding to the bottom wall of the groove on the outer surface is curved in the direction of increasing the depth of the groove, so that from the web portion surface to the tip of the projection. Is increased, and as a result, the coefficient of friction is increased. In the deformed channel steel of the above (4), since the protrusion is intermittent in the longitudinal direction of the deformed channel steel, the groove or the protrusion slides in a direction perpendicular to the groove or the protrusion and in a direction parallel to the groove or the protrusion. Can be used as a stop. In the method for producing a deformed channel steel of the above (5), by providing the roll with irregularities in the circumferential direction, the grooves and projections can be formed by rolling during rolling of the channel steel. Therefore, it is possible to eliminate the number of welding steps in forming the non-slip formed of the groove and the projection and the reinforcing member formed of the flange. In the method for producing a deformed channel steel according to the above (6), the intermittent protrusions that are interrupted in the longitudinal direction can be efficiently formed by rolling by pressing the intermittent protrusion roll against the protrusions of the deformed channel steel. In the slope way using the deformed channel steel of the above (7), a plurality of the deformed channel steels are arranged, and the slope is inclined so that the extending direction of the groove and the projection on the outer surface of the web portion is orthogonal to the direction of the inclination. Since the ropeway is formed, a slopeway in which the protrusions are non-slip and the flange portions are a reinforcing material can be manufactured without welding the non-slip and the reinforcing material. As a result, it is possible to significantly reduce welding man-hours, reduce costs, and shorten delivery times.

[0006]

1 to 5 show a modified channel steel according to an embodiment of the present invention, and FIG. 6 shows a slopeway using the modified channel steel according to the embodiment of the present invention. 7 to 9 show a method of manufacturing a deformed channel steel according to an embodiment of the present invention. Portions common to all embodiments of the present invention are denoted by the same reference numerals throughout all embodiments of the present invention.

First, a modified channel steel according to an embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG. Deformed channel steel 1 of the embodiment of the present invention
Numeral 0 has a web portion 11 and a flange portion 12 extending from both ends in the width direction of the web portion 11 in a direction substantially perpendicular to the web portion 11. The deformed channel steel 10 according to the embodiment of the present invention has a plurality of grooves 13 and protrusions 14 extending on the outer surface 16 of the web portion 11 in the longitudinal direction of the channel steel (which is also the longitudinal direction of rolling). The grooves 13 and the projections 14 are provided alternately and are parallel to each other. The deformed channel steel 10 according to the embodiment of the present invention is manufactured by rolling (normally, hot rolling) the grooves 13, the projections 14, and the flanges 12 integrally. Therefore, the projection 14 and the flange portion 12 are not joined to the channel steel by welding. In the example of FIG. 1, the projections 14 are continuous in the longitudinal direction of the channel steel, but may be intermittent in the longitudinal direction of the channel steel as shown in FIG.

The outer surface and inner surface of the flange portion 12 and the inner surface 17 of the web portion 11 may also be formed with irregularities and curves by rolling. 2, 3 and 4 show various shapes of the web portion 11, all of which are included in the present invention. FIG. 2 shows a basic shape in which the inner surface 17 of the web portion 11 has no irregularities. FIG. 3 shows a shape in which a recess 18 for increasing the height of the projection 14 is provided on a portion of the inner surface 17 of the web portion 11 corresponding to the inside of the projection 14 on the outer surface 16. The recess 18 extends continuously in the longitudinal direction of the deformed channel steel 10 and is formed by rolling. Dent 18
Is provided, the flesh of the recess 18 turns to the protrusion 14 side, and the height of the protrusion 14 can be increased. FIG.
Shows a shape in which a portion 15 of the web portion 11 corresponding to the bottom wall of the groove 13 on the outer surface 16 is curved in a direction to increase the depth of the groove 13. Curved shape 19 is deformed channel steel 10
Are formed continuously by rolling in the longitudinal direction. By providing the curved shape 19, the web portion 11
The distance between the outer surface 16 and the tip of the projection 14 becomes large.

As shown in FIG. 5, the projections 14 may be interrupted in the longitudinal direction of the deformed channel steel 10. In the example of FIG. 5, the protrusion 14 extending in the longitudinal direction of the deformed channel steel 10 is divided by the dividing groove 20 in the longitudinal direction of the deformed channel steel 10,
The projection 14 is intermittent. The depth of the dividing groove 20 may be smaller than the depth of the groove 13. The dividing groove 20 is formed by rolling. However, the rolling formation of the dividing grooves 20 is performed after the rolling formation of the longitudinal grooves 13 and the projections 14. FIG. 5 shows a rectangular shape of the tip of the divided projection 14 in a plan view, but this shape may be a shape other than a rectangle, for example, a circle, an ellipse, or the like. The desired shape can be obtained by selecting the shape.

Next, the operation of the deformed channel steel 10 will be described. The deformed channel steel 10 shown in FIGS.
Has a plurality of grooves 13 and projections 14 on the outer surface of the
3. The projection 14 can be used as a non-slip in a direction perpendicular to the groove and the projection. In this case, deformed channel steel 1
Since the grooves 13 and the projections 14 are formed by the rolling of 0, welding man-hours are reduced as compared with a conventional case in which a square steel or the like is welded to form a non-slip. Further, the flange portion 12 can be used as a reinforcing material as it is. In this case, since the flange portion 12 is formed by rolling the deformed channel steel 10, the number of welding steps is reduced as compared with the case where the reinforcing material is welded.

In the modified channel steel 10 shown in FIG.
A recess 18 is provided in a portion of the inner surface 17 corresponding to the inside of the protrusion 14 of the outer surface 16, so that the meat can be turned to the protrusion 14 on the outer surface by the thickness of the recess 18. The protrusion 14 on the side surface 16 can be raised.
As the height of the projection 14 increases, the height from the outer surface 16 of the web portion 11 to the tip of the projection 14 increases, and as a result, the coefficient of friction increases. Also, the deformed channel steel 1 shown in FIG.
0, the portion of the web portion 11 corresponding to the bottom wall of the groove 13 on the outer surface 16 is curved in a direction to increase the depth of the groove 13, so that the portion from the web portion outer surface 16 to the tip of the projection 14 is curved. The height is increased, resulting in a higher coefficient of friction.

In the deformed channel steel 10 shown in FIG. 5, the projections 14 are divided by the dividing grooves 20 in the longitudinal direction of the deformed channel steel 10 and are intermittent.
3. It can be used as a slip stopper in a direction perpendicular to the projection 14 and in a direction parallel to the groove 13 and the projection 14.

Next, a method of manufacturing the deformed channel steel 10 according to the embodiment of the present invention will be described with reference to FIGS. The method of manufacturing the deformed channel steel 10 according to the embodiment of the present invention includes a plurality of rolls for rolling the channel steel (two rolls 30 and 31 for a two-high roll, four rolls 32 for a universal roll,
33, 34, 35), a plurality of irregularities 36 extending in the circumferential direction are provided on the rolls 30 and 32 for forming the outer surface 16 of the web portion 11, and the material 10A is passed between the plurality of rolls. A method of manufacturing a deformed channel steel 10 having a plurality of longitudinally extending grooves 13 and projections 14 formed on the outer surface 16 of the web portion 11 and formed by transferring a plurality of irregularities 36 thereon. As comparative examples, conventional two-high rolls and universal rolls without irregularities are shown in FIGS. 13 and 14, conventional rolls 30 'to 35' corresponding to the rolls 30 to 35 appearing in the embodiment of the present invention are shown.

FIG. 9 shows a method of dividing the projection 14 of FIG. 5 in the longitudinal direction into an intermittent projection. That is, groove 1
3. Rolls 30, 31, or 32 forming projections 14
After 35 to 35, a projection intermittent roll 38 having a plurality of irregularities 37 extending in a direction perpendicular to the roll circumferential direction and an opposing roll 39 are arranged, and the web sent to the projection intermittent roll 38 is provided. A projection intermittent roll 38 is formed on the outer surface 16 of the web portion of the deformed channel steel 10 having a plurality of grooves 13 and projections 14 extending in the longitudinal direction on the outer surface 16 of the portion 11.
By pressing while rotating, the protrusions 14 are interrupted in the longitudinal direction by rolling.

The operation of the method for manufacturing the deformed channel steel 10 according to the embodiment of the present invention is as follows. In the method of manufacturing the deformed channel steel 10 according to the embodiment of the present invention, the grooves 13 and the projections 14 are formed by rolling at the time of rolling the channel steel by providing the rolls 30 and 32 with the unevenness 36 in the circumferential direction. be able to.
Therefore, it is possible to eliminate the number of welding steps required for welding square members and reinforcing members as in the related art in forming the non-slip formed by the grooves 13 and the protrusions 14 and the reinforcing member formed by the flange portion 12. This leads to cost reduction.

Further, in the method of manufacturing the deformed channel steel shown in FIG.
By pressing the projections and recesses 37 of the projection intermittent roll 38 against the projections 14 of the deformed channel steel 10 while rotating the projection intermittent roll 38, the intermittent projection intermittently formed in the longitudinal direction can be efficiently formed by rolling. .

Next, a slopeway using the deformed channel steel according to the embodiment of the present invention will be described with reference to FIG. Slopeway 40 using deformed channel steel according to the embodiment of the present invention
Has a web portion 11 and a flange portion 12, and the web portion 1
A plurality of grooves 1 extending in the longitudinal direction of the channel steel on the outer surface 16 of the
3. An assembly in which a plurality of deformed channel steels 10 each having a projection 14 and produced by rolling are arranged together with the outer surfaces of the flange portions 12 of the deformed channel steel 10 arranged in a groove on the outer surface 16 of the web portion 11. 13, the projection 14 is inclined such that the extending direction of the projection 14 is perpendicular to the inclination direction S of the slopeway.
It comprises a slopeway 40 utilizing the deformed channel steel 10. The projection 14 may be a continuous projection, or may be an intermittent projection (FIG. 5) divided in a direction in which the projection 14 extends (a direction orthogonal to the direction S of inclination of the slopeway). .

The contact surfaces of the flange portions 12 of the adjacent deformed channel steels 10 may be welded to each other, or a support member extending in the inclination direction of the slope way 40 may be arranged below the deformed channel steel 10. An assembly of the deformed channel steel 10 may be placed thereon and fixed to the support material by welding or the like.

The operation of the slopeway 40 using the deformed channel steel according to the embodiment of the present invention is as follows. In the slope way 40 using the deformed channel steel according to the embodiment of the present invention, a plurality of the deformed channel steels 10 are arranged, and the direction in which the grooves 13 and the projections 14 of the outer surface 16 of the web portion 11 extend is the direction of the inclination of the slope way 40. Since the slope way 40 is formed by inclining so as to be orthogonal to S, the slope way 40 in which the projections 14 are non-slip and the flange portion 12 is a reinforcing material is formed without slipping and welding the reinforcing material. it can. As a result, it is possible to significantly reduce welding man-hours, reduce costs, and shorten delivery times.

In the case where the projection 14 is a continuous projection (as shown in FIG. 1), the projection 14 can function as a non-slip in the direction S of the inclination of the slope way 40. Also, projection 1
When the protrusion 4 is an intermittent protrusion (in FIG. 5) divided in a direction in which the protrusion 14 extends (a direction perpendicular to the slope direction S of the slope way), the protrusion 14 slides in the slope direction S of the slope way 40. In addition to functioning as a stopper, it can also function as a non-slip in a direction orthogonal to the direction S of inclination of the slope way 40.

[0021]

According to the modified channel steel according to the first aspect, since the web portion has a plurality of grooves and projections on the outer surface, the grooves and projections are used as slip stoppers in a direction perpendicular to the grooves and projections. can do. In this case, since grooves and projections are formed by rolling the deformed channel steel, the number of welding steps is reduced as compared with a case where a square steel or the like is welded to produce a non-slip. Further, the flange portion can be used as a reinforcing material as it is. In this case, since the flange portion is formed by rolling the deformed channel steel, the number of welding steps is reduced as compared with the case where the reinforcing material is welded. According to the deformed channel steel according to claim 2, since the recess is provided on the inner surface of the web portion corresponding to the inside of the protrusion on the outer surface, the protrusion is formed on the outer surface by the thickness of the recess. It can be turned, thereby increasing the height of the protrusion on the outer surface. As the height of the protrusion increases, the height from the outer surface of the web portion to the tip of the protrusion increases, and as a result, the coefficient of friction increases. According to the deformed channel steel according to the third aspect, the portion of the web portion corresponding to the bottom wall of the groove on the outer surface is curved in a direction to increase the depth of the groove. The height to the tip is increased, resulting in a higher coefficient of friction. According to the deformed channel steel of claim 4, since the projections are interrupted in the longitudinal direction of the deformed channel steel,
The grooves and protrusions can be used as slip stoppers in a direction perpendicular to the grooves and protrusions and in a direction parallel to the grooves and protrusions.
According to the method of manufacturing the deformed channel steel according to the fifth aspect, by providing the roll with irregularities in the circumferential direction, the grooves and the projections can be formed by rolling at the time of rolling the channel steel. Therefore, it is possible to eliminate the number of welding steps in forming the non-slip formed of the groove and the projection and the reinforcing member formed of the flange. According to the method of manufacturing the deformed channel steel according to the sixth aspect, the intermittent protrusion which is interrupted in the longitudinal direction can be efficiently formed by rolling by pressing the intermittent protrusion roll against the protrusion of the deformed channel steel. According to the slope way using the deformed channel steel according to claim 7, a plurality of the deformed channel steels are arranged, and the slope is inclined so that the extending direction of the groove and the projection on the outer surface of the web portion is orthogonal to the direction of the inclination. Since the ropeway is formed, a slopeway in which the projections are non-slip and the flanges are the reinforcing material can be manufactured without welding the non-slip and the reinforcing material. As a result, it is possible to significantly reduce welding man-hours, reduce costs, and shorten delivery times.

[Brief description of the drawings]

FIG. 1 is a perspective view of a part of a deformed channel steel according to an embodiment of the present invention.

FIG. 2 is a front view of a web portion of the deformed channel steel according to the embodiment of the present invention.

FIG. 3 is a front view of another example of the web portion of the deformed channel steel according to the embodiment of the present invention.

FIG. 4 is a front view of still another example of the web portion of the deformed channel steel according to the embodiment of the present invention.

FIG. 5 is a perspective view of a part of another example of the deformed channel steel according to the embodiment of the present invention.

FIG. 6 is a perspective view of a part of a slopeway using the deformed channel steel according to the embodiment of the present invention.

FIG. 7 is a front view of a part of a two-high roll mill in which the method for manufacturing a deformed channel steel according to the embodiment of the present invention is performed.

FIG. 8 is a front view of a part of a universal rolling mill implementing the method for producing a deformed channel steel according to the embodiment of the present invention.

FIG. 9 is a front view of a part of an apparatus for converting projections into intermittent projections in the method for manufacturing a deformed channel steel according to the embodiment of the present invention.

FIG. 10 is a side view of a conventional general slopeway.

11 is a side view of a protrusion of the slopeway of FIG. 10 and its vicinity.

FIG. 12 is a side view of a reinforcement of the slope way of FIG. 10 and its vicinity.

FIG. 13 is a front view of a part of a conventional two-high roll mill producing a normal channel steel.

FIG. 14 is a front view of a part of a universal rolling mill for producing a conventional ordinary channel steel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Deformed channel steel 10A Material 11 Web part 12 Flange part 13 Groove 14 Projection 15 Portion of web part corresponding to bottom wall of groove on outer surface 16 Outer side surface of web part 17 Inner side surface of web part 18 Depression 19 Curved shape 20-minute groove 30, 31, 32, 33, 34, 35 Roll 36 Roughness 37 Roughness 38 Roller for intermittent protrusion 39 Opposing roll 40 Slope way S Slope way inclination direction

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B63B 25/00 102 B63B 25/00 102A

Claims (7)

[Claims] 1. A deformed channel steel formed by rolling, having a web portion and a flange portion, and having a plurality of grooves and projections extending in the longitudinal direction of the channel steel on the outer surface of the web portion. 2. The deformed channel steel according to claim 1, wherein the inner side surface of the web portion has a recess at a portion corresponding to the inside of the projection on the outer side surface to increase the height of the projection. 3. The deformed channel steel according to claim 1, wherein a portion of the web portion corresponding to the bottom wall of the groove on the outer surface is curved in a direction to increase the depth of the groove. 4. The deformed channel steel according to claim 1, wherein said projections are intermittent in the longitudinal direction of the deformed channel steel. 5. A plurality of rolls for rolling an outer surface of a web portion among a plurality of rolls for rolling a channel steel, a plurality of irregularities extending in the circumferential direction are provided, and a material is passed between the plurality of rolls. A method of manufacturing a deformed channel having a plurality of grooves and projections extending in a longitudinal direction formed by transferring a plurality of irregularities of the roll and rolling the deformed channel having an outer surface of a web portion. 6. A projection intermittent roll having a plurality of projections and depressions extending in a direction perpendicular to the roll circumferential direction is arranged after the groove and the projection forming roll, and is sent to the projection intermittent roll portion. A plurality of grooves extending in the longitudinal direction on the outer surface of the coming web portion, and a plurality of grooves and projections are intermittently interrupted in the longitudinal direction by rotating and pressing the projection interrupting roll against the outer surface of the web portion. A method for producing a deformed channel steel according to claim 5. 7. A plurality of deformed grooved steels formed by rolling, each having a plurality of grooves and projections having a web portion and a flange portion, and having a plurality of grooves and projections extending in the longitudinal direction on the outer surface of the web portion. An assembly in which grooves and projections on the outer surface of the web portion are inclined so that the direction in which the grooves and projections extend is orthogonal to the direction of the inclination, and the assembly using the profiled steel with the outer surface of the flange portion of the shape steel aligned. ropeway.