JP2019120049A - Beam material of protective fence for vehicle - Google Patents

Abstract

To provide a beam material of protective fence for vehicle having excellent load transfer between upper and lower plates, and which suppresses the reduction in work efficiency.SOLUTION: A beam material of a protective fence for vehicle which is formed of a plate material and attached to a support post erected at a prescribed interval, comprises an upper plate and a lower plate. The upper plate and the lower plate have meshing part in which comb teeth mesh with each other from one end to the other in the longitudinal direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a beam material of a vehicle protection fence which is formed of a plate material and attached to a column erected at a predetermined interval.

  On general roads or expressways, guard rails are installed as protective fences for vehicles. The vehicle protection fence prevents a vehicle whose direction of travel is wrong from deviating out of the road, and protects pedestrians and the like who pass along the sidewalk on the shoulder side. In patent document 1, it is comprised from the upper board which is a reinforcement material, and the lower board which is existing materials, a board material per one is made small, and it is a bolt in the attaching part fixed to a support pillar with an upper board and a lower board. A vehicle guard fence is disclosed comprising a beam material connected using the.

JP-A-9-13338

  In the vehicle protective fence disclosed in Patent Document 1, since the upper plate and the lower plate are connected at the attachment portion, the transfer of the load between the upper plate and the lower plate is weak. In particular, in the middle portion formed between two adjacent mounting portions, only the lower end portion of the upper plate and the upper end portion of the lower plate overlap, and the load transfer is weaker.

  Further, when the beam material is connected to another beam material at the mounting portion, in each beam material, the lower end portion of the upper plate and the upper end portion of the lower plate overlap. For this reason, in the mounting portion, the four plate members overlap, and the operation of fastening the four plate members with the bolt and the nut is complicated.

  The present invention solves the above-mentioned problems, and an object of the present invention is to provide a beam material of a protective fence for a vehicle in which the load transfer between the upper plate and the lower plate is good and the reduction in work efficiency is suppressed. .

  The beam material of the protective fence for a vehicle according to the present invention is a beam material of a protective fence for a vehicle formed of a plate material and attached to a column erected at a predetermined distance, and from the upper plate and the lower plate The upper plate and the lower plate have meshing portions in which the comb teeth mesh with each other from one end to the other end in the longitudinal direction.

  According to the above configuration, the beam member of the vehicle protection fence has the upper plate and the lower plate having the meshing portions in which the comb teeth mesh with each other from one end to the other end in the longitudinal direction. Therefore, the load transfer between the upper plate and the lower plate is good, and a reduction in work efficiency is suppressed.

It is a perspective view which expands and shows a part of guard fence for vehicles concerning Embodiment 1 of the present invention. It is a side view which shows the support | pillar part of the protective fence for vehicles which concerns on Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the longitudinal direction both ends of the protection fence for vehicles which concern on Embodiment 1 of this invention. It is sectional drawing which shows the intermediate part of the beam material of the guard fence for vehicles which concerns on Embodiment 1 of this invention in the AA cross section of FIG. It is sectional drawing which shows the attachment part of the beam material of the guard fence for vehicles which concerns on Embodiment 1 of this invention in the BB cross section of FIG. It is a perspective view which shows the attachment part which two beam materials of the protection fence for vehicles which concern on Embodiment 1 of this invention overlap. It is a perspective view which shows the back side of the attaching part which two beam materials of the vehicle protection fence which concern on Embodiment 1 of this invention overlap.

Embodiment 1
<Guard fence for vehicles>
FIG. 1 is an enlarged perspective view showing a part of a vehicle protection fence 100 according to a first embodiment of the present invention. FIG. 2: is a side view which shows the support | pillar 10 part of the protection fence 100 for vehicles which concerns on Embodiment 1 of this invention. The vehicle protection fence 100 shown in FIGS. 1 and 2 is installed on the road shoulder of the road.

  The vehicle protection fence 100 prevents the vehicle traveling on the road from deviating from the road, that is, to an opposite lane or a sidewalk, when the traveling direction is incorrect. In addition, the vehicle protection fence 100 prevents a pedestrian or the like from coming out of the sidewalk outside the road into the road.

  The vehicle protection fence 100 includes a plurality of columns 10 erected on the ground, beam members 20 fixed to the columns 10, and a bracket 30 for fixing the beam members 20 to the columns 10.

<Support 10>
The pillars 10 are dotted at predetermined intervals and project from the ground. The support 10 has a cylindrical shape. The support 10 is closed at its upper end in a dome shape.

<Beam material 20>
The beam material 20 is formed of a metal plate. The beam material 20 is in the form of a long plate having an undulating cross section whose longitudinal direction is horizontal. The beam members 20 are fixed to each of the three columns 10 at intervals in the longitudinal direction. The locations at which the beam members 20 are fixed to the support 10 are the attachment portions 21a and 21b.

  The beam member 20 is composed of an upper plate 20a and a lower plate 20b. That is, one beam member 20 is composed of two members, an upper plate 20a and a lower plate 20b. The upper plate 20a and the lower plate 20b have meshing portions 20c in which the comb teeth 20c1 and 20c2 mesh with each other from one end to the other end in the longitudinal direction. The meshing portion 20c merely combines the upper plate 20a and the lower plate 20b without overlapping. For this reason, one beam member 20 is configured of the upper plate 20a at the upper portion and the lower plate 20b at the lower portion.

  The beam member 20 is, as shown in FIG. 3 described later, an attachment portion 21a formed at one end of the beam member 20, an attachment portion 21b formed at the other end of the beam member 20, and the beam member 20 not shown. And a mounting portion formed at the center of the housing.

  In addition, one beam material 20 may be fixed to each of the two attachment portions 21 a and 21 b on at least two columns 10. One beam member 20 may be fixed to more columns 10 using a plurality of mounting portions.

  One beam member 20 includes two intermediate portions 28a and 28b formed between two adjacent ones of the three attachment portions 21a and 21b. The intermediate portion may be formed one by one between two adjacent mounting portions.

  The vehicle protection fence 100 is configured by connecting a plurality of beam members 20 along an end of a road. The beam members 20 adjacent to each other overlap the mounting portion 21 a formed at one end of one of the beam members 20 and the mounting portion 21 b formed at the other end of the other beam member 20 on the support 10. It is fixed.

  As shown in FIG. 2, the beam material 20 is formed to have an uneven cross section perpendicular to the longitudinal direction. The uneven shape includes a valley 22 having a bottom fixed to the support 10, a ridge 23 having a peak projecting upward from the valley 22, and a ridge 24 having a peak projecting downward from the valley 22. And. The concavo-convex shape is a W-shaped outline cross-sectional shape. That is, in the beam material 20, the valley portion 22 is formed between the two peak portions 23 and 24 and the two peak portions 23 and 24 in a cross section perpendicular to the longitudinal direction. Thereby, the beam material 20 has a shape of line symmetry with respect to the longitudinal center line which is the center of the upper and lower short sides extending in the longitudinal direction.

  In the mountain portions 23 and 24, upper inclined portions 23a and 24a and lower inclined portions 23b and 24b are formed. An upper inclined portion 23 a is formed at an upper end portion of the upper mountain portion 23. A lower inclined portion 23 b is formed between the upper peak portion 23 and the valley portion 22. An upper inclined portion 24 a is formed between the lower peak portion 24 and the valley portion 22. A lower inclined portion 24 b is formed at the lower end portion of the lower mountain portion 24.

<Mountings 21a, 21b of Beams 20>
FIG. 3: is a front view which shows the longitudinal direction both ends of the guard fence 100 for vehicles which concerns on Embodiment 1 of this invention. The beam material 20 is fixed to the support 10 via the bracket 30. Fixing bolt holes 25 into which fixing bolts 40 to be fixed to the support 10 are inserted are formed in the attachment portions 21 a and 21 b of the beam member 20. The fixing bolt holes 25 are formed at the bottom of the valley portion 22. Since the fixing bolt holes 25 are provided at the bottom of the valley portion 22, a large amount of block-out, which is the distance from the support 10 to the beam material 20, can be obtained.

  The beam material 20 is formed with a connecting bolt hole 26 through which a connecting bolt 41 for connecting to another beam material 20 is inserted. The connecting bolt holes 26 are formed at the tops of the two ridges 23 and 24 in a cross section perpendicular to the longitudinal direction of the beam material 20.

  As shown in FIGS. 1 to 3, in the vehicle protection fence 100, the beam member 20 is connected to the attachment portion 21b of the other end portion of the beam member 20 adjacent to the attachment portion 21a of one end portion. It is done. As shown in FIG. 3, since the two beam members 20 have the same cross-sectional shape perpendicular to the longitudinal direction, the two beam members 20 are overlapped with each other. Here, one beam member 20 is composed of two members of an upper plate 20a and a lower plate 20b. However, the upper plate 20a and the lower plate 20b are simply combined without overlapping the upper plate 20a and the lower plate 20b by the meshing portion 20c. For this reason, the two beam members 20 overlap one plate material of the attachment portions 21a and 21b with each other.

  The two overlapping beam members 20 are aligned with the connecting bolt holes 26 of the two beam members 20. Connecting bolts 41 are inserted through both connecting bolt holes 26 of the two beam members 20. The connection nut 42 is fastened to the inserted connection bolt 41, and the two beam members 20 are connected so that the overlapping mounting portions 21a and 21b are not separated.

  As shown in FIG. 3, the connecting bolt holes 26 formed in the mounting portion 21 b of the beam member 20 overlapped on the side opposite to the road side are based on the installation error at the time of installation of the vehicle protection fence 100. It is larger than the connecting bolt hole 26 formed in the mounting portion 21 a of the beam member 20 overlapped on the side.

  As shown in FIGS. 1 to 3, in the two beam members 20, the beam members 20 on the upstream side of the flow of the vehicle are stacked on the road side, and connection bolts 41 are connected to the four connection bolt holes 26. Through and connected.

<Bracket 30>
The bracket 30 is interposed between the support 10 and the beam material 20. The bracket 30 is attached to the support 10 at one place, and fixed at two places in the horizontal direction separated from the place where the beam material 20 is attached to the support 10.

  The bracket 30 has a support fixing portion 31 fixed to the support 10 at a central portion. Fixing bolt insertion holes 32 (not shown) through which the fixing bolts 40 can be inserted are formed at both ends of the support fixing portion 31.

  The fixing bolt 40 is inserted into the fixing bolt hole 25, and the beam member 20 is fixed to the bracket 30 by fastening the fixing bolt 40 and the fixing nut 43. In the bracket 30, the support fixing portion 31 is fixed to the support 10 by fastening the bracket fixing bolt and the bracket fixing nut. Since the support fixing portion 31 has a shape conforming to the shape of the support 10, the support fixing portion 31 is stably fixed to the support 10 by the fixing bolt 40 and the bracket fixing bolt.

  The mounting portions 21 a and 21 b of the two beam members 20 are overlapped and fixed to one bracket 30. That is, the two beam members 20 overlap such that the fixing bolt holes 25 are arranged at the same position. Then, one fixing bolt 40 is inserted into the two overlapping fixing bolt holes 25 and the fixing nut 43 screwed to the fixing bolt 40 is tightened. Thus, the two beam members 20 are fixed to one of the columns 10 via the brackets 30.

<Upper plate 20a and lower plate 20b of beam material 20>
As shown in FIG. 3, the upper plate 20 a and the lower plate 20 b of one beam member 20 have engagement portions 20 c in which the comb teeth 20 c 1 and 20 c 2 engage with each other from one end to the other end in the longitudinal direction. That is, the engagement portion 20c is formed horizontally between the attachment portions 21a and 21b at both longitudinal end portions of one beam member 20 and the attachment portions and the intermediate portions 28a and 28b provided therebetween.

  The meshing portion 20 c of the upper plate 20 a and the lower plate 20 b is formed in the valley portion 22 when viewed in a longitudinal cross section. The range in the vertical direction of the meshing portion 20 c in the upper plate 20 a and the lower plate 20 b is within the range of the valley portion 22.

  The comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b are formed such that both end edges in the horizontal direction are parallel to the vertical direction. The comb teeth 20c1 and 20c2 are formed such that both horizontal end edges thereof are parallel to the vertical direction in any of the attachment portions 21a and 21b and the middle portions 28a and 28b.

<Intermediate portions 28a and 28b of the upper plate 20a and the lower plate 20b>
FIG. 4 is a cross-sectional view showing an intermediate portion 28 a of the beam material 20 of the vehicle protection fence 100 according to Embodiment 1 of the present invention in a cross section AA in FIG. 3.

  As shown in FIG. 3, the horizontal width of the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper and lower plates 20a and 20b of the attachment portions 21a and 21b is the width of the upper and lower plates 20a and 20b of the intermediate portions 28a and 28b. The horizontal width of the comb teeth 20c1 and 20c2 of the meshing portion 20c is wider.

  As shown in FIG. 4 and FIG. 7 described later, the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b of the intermediate portions 28a and 28b have their tip end opposite to the side on which the vehicle travels. It is in the shape of a curving plate.

<Mountings 21a, 21b in Upper Plate 20a and Lower Plate 20b>
FIG. 5 is a cross-sectional view showing the mounting portions 21a and 21b of the beam material 20 of the vehicle protection fence 100 according to the first embodiment of the present invention in a B-B cross section of FIG. FIG. 6 is a perspective view showing the attachment portions 21a and 21b in which the two beam members 20 of the vehicle protective fence 100 according to the first embodiment of the present invention overlap. FIG. 7 is a perspective view showing the back side of the attachment portions 21a and 21b on which the two beam members 20 of the vehicle protective fence 100 according to the first embodiment of the present invention overlap.

  As shown in FIGS. 3 to 7, the comb teeth 20 c 1 and 20 c 2 of the meshing portion 20 c in the upper plate 20 a and the lower plate 20 b of the attachment portions 21 a and 21 b in the longitudinal direction are longitudinal directions of other beam members 20. It projects in a direction opposite to the direction in which the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b at both ends project.

  Therefore, the comb teeth 20c1 and 20c2 of the meshing portion 20c in the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b at both ends in the longitudinal direction have the comb teeth 20c1 of the upper plate 20a downward at both ends in the longitudinal direction. I am extending it.

  The attachment portions 21a and 21b have the comb teeth 20c1 and 20c2 of the meshing portion 20c in the upper plate 20a and the lower plate 20b, one each on the upper plate 20a and the lower plate 20b. Thereby, each of the pair of fixing bolt holes 25 is formed in the comb teeth 20c1 and 20c2 of the meshing portion 20c of either the upper plate 20a or the lower plate 20b. Then, even if the two beam members 20 are divided up and down, two plate members are stacked and connected using the fixing bolt 40 and the fixing nut 43.

  As shown in FIGS. 5 to 7, the comb teeth 20 c 1 and 20 c 2 of the meshing portion 20 c in the upper plate 20 a and the lower plate 20 b of the mounting portion 21 a have a flat plate shape. Thereby, in any of the attachment portions 21a and 21b, the comb teeth 20c1 and 20c2 can be easily fixed to the support 10 without being in the way. Further, at the attachment portions 21a and 21b at the longitudinal direction both ends, when connecting the two beam members 20, the two beam members 20 can be overlapped without the comb teeth 20c1 and 20c2 being in the way.

<Effect of Embodiment 1>
According to the first embodiment, the beam material 20 of the vehicle protection fence 100 is formed of a plate material and is attached to the column 10 erected at a predetermined interval. The beam member 20 is composed of an upper plate 20a and a lower plate 20b. The upper plate 20a and the lower plate 20b have meshing portions 20c in which the comb teeth 20c1 and 20c2 mesh with each other from one end to the other end in the longitudinal direction.

  According to this configuration, in the meshing portion 20c, the comb teeth 20c1 and 20c2 mesh with each other over the upper plate 20a and the lower plate 20b from one end to the other end in the longitudinal direction. As a result, the load in the horizontal direction between the upper plate 20a and the lower plate 20b is transmitted by the meshing teeth 20c1 and 20c2. Further, the upper plate 20a and the lower plate 20b are merely engaged by the engagement portion 20c, and the upper plate 20a and the lower plate 20b do not overlap. Therefore, when the beam member 20 is connected to the other beam members 20 at the attachment portions 21a and 21b, the two beam members 20 overlap at the attachment portions 21a and 21b, and the two beam members 20 are used as connection bolts. The conventional operation of fastening with the connection nut 42 and the connection nut 42 can be performed, and the operation is not complicated. Therefore, the load transfer between the upper plate 20a and the lower plate 20b is good, and a reduction in work efficiency is suppressed.

  According to the first embodiment, the beam member 20 includes a plurality of attachment portions 21 a and 21 b formed at intervals in the longitudinal direction to be fixed to the plurality of columns 10 respectively. Each of the attachment portions 21a and 21b at both longitudinal end portions is overlapped with and connected to the attachment portions 21a and 21b at either end of the other beam member 20 in the longitudinal direction. The comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b at both ends in the longitudinal direction are the attachment portions 21a and 21b at the longitudinal ends of the other beam members 20, respectively. It protrudes in the reverse direction to the protrusion direction of the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b.

  According to this configuration, when the beam member 20 is connected to the other beam members 20 at the attachment portions 21a and 21b, in the attachment portions 21a and 21b, the projecting directions of the comb teeth 20c1 and 20c2 of the meshing portion 20c are reversed. It is a direction. Thereby, even if the beam members 20 are divided into the upper plate 20a and the lower plate 20b, the two beam members 20 can be attached to the support 10 by fastening the two beam members 20 with the fixing bolts 40 and the fixing nuts 43. It can be fixed firmly.

  According to the first embodiment, the comb teeth 20c1 and 20c2 of the meshing portion 20c in the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b at both ends in the longitudinal direction are combs of the upper plate 20a at both ends in the longitudinal direction. The teeth 20c1 are formed to extend downward.

  According to this configuration, when the beam material 20 is connected to the other beam material 20 at the attachment parts 21a and 21b, the comb teeth 20c1 and 20c2 of the meshing part 20c are at both ends in the longitudinal direction at the attachment parts 21a and 21b. The comb teeth 20c1 of the upper plate 20a are formed to extend downward. Thereby, each of the upper plate 20a and the lower plate 20b can transmit the load generated in the longitudinal direction equally in the vertical direction.

  According to the first embodiment, the mounting portion 21 a has a pair of fixing bolt holes 25 aligned in the horizontal direction through which the fixing bolt 40 for fixing to the support 10 is inserted. Each of the pair of fixing bolt holes 25 is formed in the comb teeth 20c1 and 20c2 of the meshing portion 20c of either the upper plate 20a or the lower plate 20b.

  According to this configuration, each of the pair of fixing bolt holes 25 is formed in the comb teeth 20c1 and 20c2 of the meshing portion 20c of one of the upper plate 20a and the lower plate 20b. Thereby, even if the beam material 20 is divided into the upper plate 20a and the lower plate 20b, the upper plate 20a and the lower plate 20b can be respectively fastened by the fixing bolt 40 and the fixing nut 43, and the beam material 20 is a support It can be fixed firmly to 10.

  According to the first embodiment, the attachment portions 21a and 21b have the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b, one each for the upper plate 20a and the lower plate 20b.

  According to this configuration, since the attachment portions 21a and 21b have the comb teeth 20c1 and 20c2 of the engagement portion 20c one each on the upper plate 20a and the lower plate 20b, the attachment portions 21a and 21b have the engagement portion 20c. Even in this case, the strength of the mounting portions 21a and 21b does not easily decrease.

  According to the first embodiment, at least one or more intermediate portions 28a and 28b formed between two adjacent ones of the plurality of attachment portions 21a and 21b are provided. Horizontal widths of the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b are the comb teeth 20c1 of the meshing portion 20c of the upper plate 20a and the lower plate 20b of the middle portions 28a and 28b. , 20c2 horizontal width wider.

  According to this configuration, the horizontal width of the comb teeth 20c1 and 20c2 of the meshing portion 20c is wider than the horizontal width of the comb teeth 20c1 and 20c2 of the meshing portion 20c of the middle portions 28a and 28b. Therefore, even if the mounting portions 21a and 21b have the meshing portion 20c, the strength of the mounting portions 21a and 21b is not easily weakened.

  According to the first embodiment, at least one or more intermediate portions 28a and 28b formed between two adjacent ones of the plurality of attachment portions 21a and 21b are provided. The comb teeth 20c1 and 20c2 of the meshing portion 20c in the upper plate 20a and the lower plate 20b of the attachment portions 21a and 21b are flat. The comb teeth 20c1 and 20c2 of the meshing portion 20c in the upper plate 20a and the lower plate 20b of the intermediate portions 28a and 28b are in the form of curved plates that cause the tip end to warp on the side opposite to the side on which the vehicle travels.

  According to this configuration, the attachment portions 21a and 21b having the flat plate-like comb teeth 20c1 and 20c2 can easily overlap the beam material 20 with another beam material 20. Further, in the intermediate portions 28a and 28b having curved plate-like comb teeth 20c1 and 20c2 that bend the tip end on the side opposite to the side on which the vehicle travels, the load in the horizontal direction between the upper plate 20a and the lower plate 20b is engaged It is easy to be transmitted by the comb teeth 20c1 and 20c2. In addition, since the middle portions 28a and 28b bend the tip end portions of the comb teeth 20c1 and 20c2 from the side on which the vehicle travels, the vehicles which are in contact with the beam material 20 by the comb teeth 20c1 and 20c2 of the meshing portion 20c are not scratched.

  According to the first embodiment, the beam material 20 is formed to have an uneven cross section perpendicular to the longitudinal direction. The uneven shape has a valley 22 having a bottom fixed to the support 10 and ridges 23, 24 having a top protruding from the valley 22. The engagement portion 20 c of the upper plate 20 a and the lower plate 20 b is formed in the valley portion 22.

  According to this configuration, since the meshing portion 20c is formed in the valley portion 22, the meshing portion 20c is not formed to other portions, the meshing portion 20c can be simplified, and the beam material 20 can be easily manufactured.

  According to the first embodiment, the range in the vertical direction of the meshing portion 20 c in the upper plate 20 a and the lower plate 20 b falls within the range of the valley portion 22.

  According to this configuration, since the range in the vertical direction of the meshing portion 20c falls within the range of the valley portion 22, the meshing portion 20c is not formed to a size to use other parts, and the meshing portion 20c can be simplified. The cut ends of the plate material forming the material 20 can be reduced, and the manufacturing efficiency of the beam material 20 can be improved.

  According to the first embodiment, the comb teeth 20c1 and 20c2 of the meshing portion 20c of the upper plate 20a and the lower plate 20b are formed such that both horizontal end edges thereof are parallel to the vertical direction.

  According to this configuration, since the comb teeth 20c1 and 20c2 are formed so that both end edges in the horizontal direction are parallel to the vertical direction, the load in the horizontal direction between the upper plate 20a and the lower plate 20b shifts to the comb teeth 20c1 and 20c2 And the load transfer between the upper plate 20a and the lower plate 20b is better.

  Reference Signs List 10 post, 20 beam material, 20a upper plate, 20b lower plate, 20c engagement portion, 20c1 comb tooth, 20c2 comb tooth, 21a attachment portion, 21b attachment portion, 22 valley portion, 23 peak portion, 23a upper inclined portion, 23b lower Inclined part, 24 peak part, 24a upper inclined part, 24b lower inclined part, 25 fixing bolt hole, 26 connecting bolt hole, 28a middle part, 28b middle part, 30 bracket, 31 post fixing part, 40 fixing bolt, 41 Connection bolt, 42 Connection nut, 43 Fixing nut, 100 Vehicle protection fence.

Claims (10)

A beam material of a vehicle protection fence which is formed of a plate material and is attached to a column erected at a predetermined interval,
It consists of an upper plate and a lower plate,
The upper plate and the lower plate are beam members for vehicle protection fences having meshing portions in which the respective comb teeth mesh with each other from one end to the other end in the longitudinal direction. A plurality of longitudinally spaced mounting portions for being fixed to respective ones of the plurality of columns;
Each of the mounting portions at both longitudinal end portions is connected to the mounting portion at one of the longitudinal end portions of the other beam material in an overlapping manner,
The comb teeth of the meshing portion of the upper plate and the lower plate of each of the attachment portions at both end portions in the longitudinal direction are the upper and lower plates of the attachment portions of the other end portions in the longitudinal direction of the other beam members. The beam material of the guard fence for vehicles according to claim 1 which protrudes in the direction opposite to the direction of protrusion of the comb teeth of the meshing portion in the.   The comb teeth of the meshing portions of the upper plate and the lower plate of the attachment portions at both ends in the longitudinal direction are formed by extending the comb teeth of the upper plate downward at both ends in the longitudinal direction. Beam material of guard fence for vehicles given in 2. The mounting portion has a pair of fixing bolt holes aligned in the horizontal direction through which fixing bolts to be fixed to the columns are inserted,
The beam for vehicle protection fence according to claim 2 or 3, wherein each of the pair of fixing bolt holes is respectively formed in the comb teeth of the meshing portion of either the upper plate or the lower plate. Material.   The vehicle protection according to any one of claims 2 to 4, wherein the attachment portion has the comb teeth of the meshing portion in the upper plate and the lower plate, one each on the upper plate and the lower plate. Beam material of the fence. At least one intermediate portion formed between each of two adjacent ones of the plurality of mounting portions,
The horizontal width of the comb teeth of the meshing portion of the upper plate and the lower plate of the mounting portion is greater than the horizontal width of the comb teeth of the meshing portion of the upper plate and the lower plate of the middle portion The beam material of the guard fence for vehicles according to any one of claims 2 to 5 which is broad. At least one intermediate portion formed between each of two adjacent ones of the plurality of mounting portions,
The comb teeth of the meshing portion in the upper plate and the lower plate of the mounting portion are in a flat plate shape,
The comb teeth of the meshing portion in the upper plate and the lower plate of the intermediate portion are in the shape of a curved plate that causes the tip to be warped on the side opposite to the side on which the vehicle travels. Beam material of guard fence for vehicles as described in. The cross section perpendicular to the longitudinal direction is formed in an uneven shape,
The uneven shape includes a valley having a bottom fixed to the support, and a peak having a top protruding from the valley.
The beam material of the guard fence for vehicles according to any one of claims 1 to 7 in which said meshing part in said upper board and said lower board is formed in said valley part.   The beam material of the guard fence for vehicles according to claim 8 which the range of the up-and-down direction of said meshing part in said upper board and said lower board is settled in the range of said valley part.   The beam material of the protective fence for vehicles according to any one of claims 1 to 9, wherein the comb teeth of the meshing portion in the upper plate and the lower plate are formed such that both horizontal end edges thereof are parallel in the vertical direction. .

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