JP2010000597A - Manufacturing method for grating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a grating which hardly passes rubbish to fall through and improves walking performance and traveling performance when bicycles, wheelchairs, tricycles for children, and the like travel. <P>SOLUTION: The manufacturing method for the grating comprises processes of: forming each main member 11 knurled by cold-rolling a band steel and coining a knurled roll on its side end face; arranging main members 11 in parallel, placing horizontal members at right angles, and welding the horizontal members to the main members; and coupling end plates or an end angled material to the end portions of the main members by welding. A wedge-like cutter is driven into the side end face of the band steel before or after knurling thereon to form a V-groove 22 in the longitudinal direction and the V-groove is filled with aggregate-containing resin 23. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is arranged such that the main member is disposed orthogonally to the main member on the upper side or the lower side of the main member arranged side by side, and a lateral member that connects the main member, and an end plate or an end angle that connects the ends of the main member The present invention relates to a manufacturing method of a grating made of a material and used as a floor slab for a bridge, a road, a factory, or the like, or as a groove cover or the like.

  FIG. 1 shows an example of this type of grating. A main member 1 made of I-shaped steel is arranged side by side and both ends thereof are connected by end plates 2 respectively, and a transverse member 3 made of a rod such as a twist bar is provided. The main member 1 is arranged at an appropriate interval orthogonal to the main member 1, and the main member 1 is connected. As shown in FIG. It is known that it is formed in the shape of or a warped protrusion is formed.

  The main member having the protrusions as described above is obtained by a method of printing with a roll having a recess corresponding to the protrusion on the side end surface of the I-shaped steel in the hot rolling.

  In the grating that a pedestrian, a bicycle, a wheelchair, a tricycle for children, and the like pass, the above-described protrusion does not need to be formed as high as the grating used in the roadway on which the automobile passes.

  Accordingly, an object of the present invention is to provide a manufacturing method of a grating in which a protrusion does not have a sufficient height and a pedestrian, bicycle, wheelchair, child tricycle or the like that is easy to manufacture passes.

  In the grating configured as described above, when the distance between the main members is wide, when the blind person walks from the touch with the passage surface of the tip of the cane, the tip of the cane fits between the main members, If the distance between the two is the same size as the tip of the cane, the tip of the cane fitted between the main members is difficult to come off.

  Also, when the distance between the lateral members is wide, when a bicycle, a wheelchair, a children's tricycle or the like travels on the grating, the wheels may be fitted between the main members and become unable to move.

  Another object of the present invention is to provide a grating that is difficult for a blind person to insert a cane tip. Still another object of the present invention is that a wheel of a bicycle, a wheelchair, a tricycle for children, etc. is fitted and hinders traveling. It is intended to provide a grating that will never come.

  The invention according to claim 1 is a method of forming a knurled main member by cold rolling a steel strip and pressing a roll having knurled eyes on its side end face, and arranging the horizontal members in parallel with the main members. In a manufacturing method of a grating comprising a step of arranging orthogonally and welding to a main member, and a step of welding and connecting an end plate or an end-angle material to the end of the main member, a knurling is formed on the side end surface of the strip steel. A V-groove is formed in the longitudinal direction by driving a wedge-shaped cutter before or after the processing step.

Examples of the knurled eye according to the present invention include those defined in JIS B 0951, engraved depressions 6 having a pyramidal cross section as shown in FIGS. 3 and 4, and as shown in FIGS. There are two types in which the convex portion 7 having a square pyramid shape is formed, and the former JIS B 0951 is specified in two types, the flat type and the iris type. Even more can be provided with excellent non-slip effect.
The invention according to claim 2 is characterized in that, in the invention according to claim 1, a resin containing aggregate is filled into the formed V-groove.

According to the first aspect of the present invention, by forming a V groove by driving a wedge-shaped cutter, the width of the side end surface of the main member is enlarged, and the interval between the main members is reduced so that dust and the like are not easily removed. Thus, the walking performance and the traveling performance when a bicycle, a wheelchair, a tricycle for children, etc. travel are also improved. Further, since the blind person gets a feeling of the traffic surface, the problem that the wand tip fits between the main members and interferes with the passage when the walking surface is picked up by the wand tip can be solved.
In the invention according to claim 2, the resin containing aggregate fulfills the function of preventing slipping when a pedestrian, a bicycle, a wheelchair, a tricycle for children or the like passes, and the design effect can be enhanced.

A preferred first aspect of the invention relates to a grating that achieves the above-mentioned another object. The main member and a transverse member that is arranged orthogonally to the main member on the upper side or the lower side of the main member that is arranged side by side and connects the main member. It consists of a member and an end plate or end-angle member that connects the end of the main member. It is the size which does not fit.
The diameter of the tip of the cane for blind persons is about 8 mm, which is small. Therefore, if the gap between the main members is within 8 mm, the tip of the cane does not fit between the main members.

  A preferred second invention relates to a grating that achieves the further object, and is arranged orthogonally to the main member on the upper side or the lower side of the main member arranged side by side, and connects the main member. In a grating consisting of a horizontal member and an end plate or end-angle material that connects the ends of the main member, and for pedestrians, bicycles, wheelchairs, children's tricycles, etc. This is characterized in that the wheels of the tricycle for use are fitted and the travel is not hindered.

  Some wheels of bicycles and wheelchairs have different diameters, but the diameter is generally larger than the wheels of children's tricycles. Therefore, unless the wheels of the children's tricycle are fitted to hinder the running, the wheels of the bicycle or wheelchair are not fitted, and even if fitted, the wheel is not used for running.

According to the invention according to claim 1, the width of the side end surface of the main member is enlarged, the interval between the main members is narrowed, and dust and the like are not easily dropped.
In the invention concerning Claim 2, the design effect can be improved and the appearance can be improved by coloring the resin.

The perspective view of the conventional grating. The partial expansion perspective view of the main member used for the conventional grating. The perspective view which shows an example of knurling. FIG. 4 is an enlarged longitudinal sectional view of a recessed portion in FIG. 3. The perspective view which shows another example of knurling. FIG. 6 is an enlarged vertical sectional view of a convex portion in FIG. 5. The partial expansion perspective view of the main member used for grating concerning the present invention. The top view which shows another example of grating. Sectional drawing which shows another example of grating. The partial expanded sectional view which shows the state which driven the wedge-shaped cutter into the surface of the main member. The partial expanded sectional view of the main member which filled V-groove with resin containing aggregate. The top view of grating. The top view of grating.

  In FIG. 7, knurled eyes 12 are formed cold on the surface of the main member 11 constituting the grating. In the illustrated example, flat knurled eyes 12 are formed. It may be formed. These knurled eyes 12 are formed by printing a knurled roll (not shown), and burr-like protrusions 13 are formed on both sides by printing the roll.

  The grating is composed of the main member 11 described above, a transverse member welded orthogonally to the main member 11, and an end plate or an end-angle material connecting the end portions of the main member 11, as shown in FIG. It can also be formed by printing a knurled roll on the grating, or by pressing a knurled mold.

  FIG. 8 shows another example of the grating. A plurality of auxiliary members 16 are arranged in parallel between the main members 15 and connected by the lateral members 17, and end plates 18 are provided at both ends of the main member 15. A flat knurled eye 12 is formed on the main member 15, the auxiliary member 16, and the end plate 18, and the knurled eye is not shown in the center.

  FIG. 9 shows still another example of the grating, in which both ends of the main member 19 connected by the horizontal member 14 are connected by the end angle material 20, and the main member 19, the horizontal member 14 and the end angle material 20 are connected. Similar to the grating shown in FIG.

  FIG. 10 shows that a V-shaped groove 22 is formed in the longitudinal direction of the main member 11 by driving a wedge-shaped cutter 21 on the surface of the main member 11 having the knurled eyes 12 or the main member having no knurled eyes as shown in FIG. In FIG. 11, the V groove 22 of the main member 11 in which the V groove 22 is formed is filled with a resin containing aggregate, preferably a colored resin 23.

  In the grating shown in FIG. 12, the gap c between the main members 25 is set to a size that does not fit the tip of the cane for a blind person, for example, within 8 mm. The grating shown in FIG. And the distance d between the end plate members 28 is smaller than the diameter of the wheel of the child tricycle.

  Also in the grating shown in FIGS. 12 and 13, the main member is knurled as shown in FIGS. 7, 9, and 10, or V-grooves are formed, and the resin containing the aggregate is filled in the V-grooves. It is desirable to do.

6 .. Recess 7.. Convex 11, 15, 19, 25.. Main member 12.. Knurled eye 13.. Projection 14, 17, 27. 20. ・ End angle material 21 ・ ・ Cutter 22 ・ ・ V groove 23 ・ ・ Resin containing aggregate

Claims (2)

  Cold rolling the steel strip and forming a knurled main member by printing a roll having knurled eyes on the side end surfaces thereof, and arranging the main members in parallel and arranging the transverse members orthogonally, In the manufacturing method of the grating comprising the step of welding to the end portion of the main member and the step of welding and connecting the end plate or the end-angle material to the end of the main member, before or after the step of knurling the side end surface of the strip steel A grating manufacturing method, wherein a wedge-shaped cutter is driven to form a V-groove in a longitudinal direction.   2. The manufacturing method for a grating according to claim 1, wherein the formed V-groove is filled with a resin containing aggregate.