JP7042607B2 - Beam material for vehicle guard rails and vehicle guard fences - Google Patents

Description

The present invention relates to a beam material for a vehicle guard rail, and particularly to a structure of the beam material.

Guardrails are installed as protective fences for vehicles installed on general roads and highways. These vehicle guard fences prevent vehicles in the wrong direction from deviating from the road and protect pedestrians and the like passing on the sidewalk on the shoulder side of the road. As disclosed in Patent Document 1, as a guard fence for a vehicle, a fence made by fixing a beam material obtained by forming a metal plate material into a wavy shape is used on columns erected at predetermined intervals.

The vehicle guard fence disclosed in Patent Document 1 uses a beam material obtained by forming a metal plate material into a wavy shape. The beam material is attached to a bracket attached to a plurality of erected columns. It is supported by a suspension band or a worker's hand when it is attached, and it is attached while aligning the hole provided in the bracket with the hole provided in the beam material. After the first beam material is attached, the end of the second beam material of the same shape is overlapped with one end of the first beam material, and multiple beam materials are continuous along the road. And be attached.

Japanese Unexamined Patent Publication No. 2007-21148

According to the vehicle guard rail disclosed in Patent Document 1, two adjacent beam materials are fixed to the bracket of one column by overlapping the ends thereof with two sets of bolts and nuts. .. Further, the two adjacent beam materials are bolted through four bolt insertion holes so as not to be separated from each other in the overlapping direction, and the nuts are tightened and fastened. As described above, the two adjacent beam materials are fastened at six points at one end of the beam material with bolts and nuts, and there is a problem that the tightening work takes time.

The present invention solves the above-mentioned problems, and reduces the work load when fixing the beam materials to each other in the installation of the vehicle guard fence, and improves the work efficiency of the beam material of the vehicle guard fence and the vehicle . The purpose is to provide a guard rail .

The beam material of the protective fence for vehicles according to the present invention is a beam material of a protective fence for vehicles, which is formed of a plate material and is attached to columns erected at predetermined intervals with the longitudinal direction horizontal. The plate material includes a protrusion in which a part of the plate material is projected from the plate surface, the protrusion portion has a protrusion end surface facing the longitudinal direction of the plate material, and at least a part of the protrusion end surface is the plate. A fitting hole that is arranged within a height range of the thickness dimension of the plate material from the surface, and the protrusion provided in another plate material is to be fitted to the other end portion in the longitudinal direction of the plate material. Is provided .

With the above configuration, the beam material of the vehicle guard fence can reduce the work load by reducing the fastening points of the bolts and nuts when the beam materials are overlapped and fixed to the vehicle guard fence. In addition, since the number of bolts and nuts to be fastened is reduced and a protrusion is provided, it is possible to prevent the beam materials from shifting in the longitudinal direction even when a load is applied in the direction in which the beam materials are pulled in the longitudinal direction. .. Therefore, the guard fence for vehicles can exhibit the same strength and energy absorption performance as the conventional ones.

It is a front view of the guard rail for a vehicle which concerns on Embodiment 1 of this invention. It is a front view and a top view explaining the structure of the bracket of FIG. It is a figure which shows the cross section of the fixed part of the beam material of FIG. 1 and a bracket. It is a front view of the beam material of FIG. It is a figure which shows the cross section perpendicular to the longitudinal direction of the beam material of FIG. It is an enlarged view around the protrusion of FIG. It is an enlarged view around the fitting hole of FIG. It is sectional drawing explaining the fitting state of the protrusion | fitting hole of the beam material which concerns on Embodiment 1 of this invention. It is a figure which shows the CC cross section of FIG. It is sectional drawing around the protrusion when a plurality of beam materials which concerns on Embodiment 1 of this invention are piled up.

Embodiment 1.
FIG. 1 is a front view of the vehicle guard rail 100 according to the first embodiment of the present invention. FIG. 1 is a view seen from the road side through which a vehicle passes. The vehicle guard fence 100 is installed on the shoulder of the road. The vehicle guard fence 100 prevents a vehicle traveling on the road from deviating from the road, that is, to an oncoming lane, a sidewalk, or the like when the vehicle travels in the wrong direction. In addition, it suppresses pedestrians and the like from coming out unnecessarily into the road from sidewalks and the like outside the road.

The vehicle guard fence 100 is composed of a support column 20 erected on the ground and a beam material 10 fixed to the support column 20. The columns 20 are erected on the ground at predetermined intervals. A bracket 30 of the beam material 10 is fixed to the support column 20. The beam material 10 is made of a metal plate material. One beam material 10 is fixed to at least two columns 20 with the longitudinal direction horizontal to the ground. However, one beam material 10 may be fixed to more columns 20. In the first embodiment, as shown in FIG. 1, one end of the beam material 10A is fixed to the bracket 30A and the other end is fixed to the bracket 30B. The bracket 30A is fixed to the support column 20A, and the bracket 30B is fixed to the support column 20B. One end of the beam material 10B is overlapped and fixed to the bracket 30B to which the beam material 10A is attached from above the beam material 10A. The other end of the beam material 10B is fixed to the bracket 30C. The bracket 30C is fixed to the support column 20C.

(Bracket 30)
The vehicle guard fence 100 is configured by connecting a plurality of beam materials 10 along the road. The beam material 10A and the beam material 10B that are adjacent to each other are fixed to the bracket 30B attached to the support column 20B by superimposing the ends in the longitudinal direction on each other. In FIG. 1, two beam materials 10A and beam material 10B are connected to three columns 20A to 20C, but the vehicle guard rail 100 is configured by connecting more beam materials 10. You may. The beam materials 10A and 10B may be collectively referred to as the beam material 10. Further, the columns 20A, 20B, and 20C may be collectively referred to as a column 20, and the brackets 30A, 30B, and 30C provided on the column 20 may be collectively referred to as a bracket 30.

FIG. 2 is a front view and a top view illustrating the structure of the bracket 30 of FIG. FIG. 3 is a diagram showing a cross section of a fixed portion between the beam material 10 and the bracket 30 of FIG. FIG. 2A is a top view of the bracket 30, that is, a view seen from above of FIG. 1, and FIG. 2B is a front view of the bracket 30, that is, a state seen from the front of FIG. It is a figure of. The beam material 10 is fixed to the support column 20 via the bracket 30. At the end of the beam material 10, a fixing bolt hole 11 through which the fixing bolt 31 can be inserted is provided in the central portion in the direction perpendicular to the longitudinal direction. The bracket 30 has a support column fixing portion 33 fixed to the support column 20 at the center portion, and has beam material fixing portions 34 on both sides of the support column fixing portion 33. The two beam material fixing portions 34 project to the beam material 10 side with respect to the support column fixing portion 33, and are arranged in parallel so as to form substantially the same surface. The beam material fixing portion 34 has a fixing bolt insertion hole 35 through which the fixing bolt 31 can be inserted. The beam material 10 is fixed to the bracket 30 by inserting the fixing bolt 31 into the fixing bolt hole 11 and fastening the fixing bolt 31 and the fixing nut 32. In the bracket 30, the support column fixing portion 33 is fixed to the support column 20 by passing the bracket fixing bolt 21 through the bracket fixing bolt hole 38 and fastening the bracket fixing bolt 21 and the bracket fixing nut 22. Since the column fixing portion 33 has a shape that follows the shape of the column 20, it is stably fixed to the column 20 by the bracket fixing bolt 21 and the bracket fixing nut 22.

(Bolt hole 11 for fixing the beam material 10)
The fixing bolt holes 11a and 11b of the beam material 10A are spaced apart from each other so as to correspond to the fixing bolt insertion holes 35 provided in the beam material fixing portion 34 of the bracket 30A. The beam material 10A is provided with fixing bolt holes 11c and 11d at one end thereof at the other end portion in the longitudinal direction of the beam material 10A, and is provided in the beam material fixing portion 34 of the bracket 30B, respectively. The spacing is set to correspond to the fixing bolt insertion holes 35. The beam material 10 may be provided with more fixing bolt holes 11. For example, two more fixing bolt holes 11 may be installed in the central portion of the beam material 10 in the longitudinal direction, and in that case, the central portion of the beam material 10 can also be fixed to the bracket 30 of the support column 20. ..

FIG. 4 is a front view of the beam material 10 of FIG. FIG. 5 is a diagram showing a cross section perpendicular to the longitudinal direction of the beam material 10 of FIG. In FIG. 4, the central portion of the beam material 10 is omitted. 5 (a) shows a cross section taken along the line AA of FIG. 4, and FIG. 5 (b) shows a cross section taken along the line BB of FIG.
The beam material 10 has a corrugated cross section in a direction perpendicular to the longitudinal direction. In other words, an uneven shape is formed. The beam material 10 has two peaks and a valley formed between the two peaks in a cross section perpendicular to the longitudinal direction. The fixing bolt hole 11 is provided at the bottom 16 of the valley portion. Since the fixing bolt holes 11 are installed at the bottom 16 of the valley portion, the amount of the beam material 10 protruding from the support column 20 (blockout amount) can be increased.

(Protruding portion 90)
FIG. 6 is an enlarged view of the periphery of the protrusion 90 of FIG. FIG. 7 is an enlarged view of the periphery of the fitting hole 80 of FIG. The projecting portion 90 projects a part of the plate material constituting the beam material 10 from the plate surface toward the support column 20 side. When viewed from the front side of the vehicle guard rail 100, the protruding portion 90 protrudes to the back surface side. Since the protruding portion 90 protrudes to the back surface side, safety can be ensured without the vehicle or the like traveling on the road getting caught in the protruding portion 90. In the cross section perpendicular to the longitudinal direction, the protrusion 90 is formed in a V shape having a predetermined R shape at the tip. The protrusion 90 is formed between two slits 91 arranged in the longitudinal direction of the beam material 10. For example, two slits 91 are formed on the plate surface of the beam material 10 by punching, and then the plate surface between the two slits 91 is plastically deformed by a press to form the protruding portion 90. Since the slits 91 are provided on both sides of the protrusion 90, the protrusion end surface 92 facing the longitudinal direction of the protrusion 90 is formed by the cross section of the plate material, and is easily formed as a surface perpendicular to the plate surface. It has become.

As shown in FIGS. 4 and 5, a protrusion 90 is provided at one end of the beam material 10. Two protrusions 90 are formed on the tops 18 of the two peaks of the beam material 10. In the first embodiment, the projecting portions 90 formed at one end of the beam material 10 are arranged above and below the fixing bolt holes 11, that is, in a direction perpendicular to the longitudinal direction of the beam material 10.

(Matching hole 80)
A fitting hole 80 is formed in the other end of the beam material 10 which is not the one end where the protrusion 90 is provided. The fitting hole 80 is set in vertical and horizontal dimensions so that the protruding portion 90 enters the fitting hole 80 when one end of the beam material 10 is overlapped with the other end. The fitting holes 80 are formed at four locations in total, two at the top 18 of the mountain portion at the other end of the beam material 10. The positional relationship between the fitting holes 80 is such that when one end of the beam material 10 is overlapped on the other end, all the protrusions 90 enter all the fitting holes 80. It is equal to the positional relationship between 90s.

(Bolt hole 12 for connecting the beam material 10)
As shown in FIG. 1, the beam material 10B is connected to the adjacent beam material 10A at one end. Since the beam material 10A and the beam material 10B have the same cross-sectional shape perpendicular to the longitudinal direction, the uneven shapes can be overlapped with each other. The beam material 10A and the beam material 10B are provided with connection bolt holes 12 at the tops 18 of the two peaks in a cross section perpendicular to the longitudinal direction, and the positions of the connection bolt holes 12 provided in each are provided. Are piled up so that they fit together. In the first embodiment, the positions of the connection bolt holes 12a of the beam material 10B and the connection bolt holes 12b of the beam material 10A are aligned. At this time, the protruding portion 90 of the beam material 10B and the fitting hole 80 of the beam material 10A are also aligned, and the protruding portion 90 and the fitting hole 80 are fitted.

A connecting bolt 60 is inserted into the connecting bolt hole 12 between the beam material 10A and the beam material 10B. A connecting nut 61 is fastened to the inserted connecting bolt 60, and the beam material 10A and the beam material 10B are joined so that the overlapped portions do not separate from each other. In the first embodiment, the beam material 10A and the beam material 10B are overlapped so that the beam material 10B is located on the road side. The connection bolt 60 is provided in the connection bolt hole 12a provided between the two fitting holes 80 of the beam material 10A and the connection bolt hole 12b provided between the two protrusions 90 of the beam material 10B. It is inserted and fixed by a connecting nut 61 so that the two beam materials 10 do not separate from each other.

A plurality of connecting bolt holes 12 are provided in the longitudinal direction of the beam material 10, and in the first embodiment, one is provided at each of the tops 18 of the uneven mountain portions at both ends of the beam material 10. There is. That is, four connecting bolt holes 12 are provided for each of the beam materials 10. In the first embodiment, the connection bolt 60 is inserted through the connection bolt holes 12a and 12b. The beam material 10A adjacent to the beam material 10B is also formed in the same manner.

(Mating state of the protrusion 90 and the fitting hole 80)
FIG. 8 is a cross-sectional view illustrating a fitted state between the protruding portion 90 of the beam material 10 and the fitting hole 80 according to the first embodiment of the present invention. FIG. 9 is a diagram showing a cross section taken along the line CC of FIG. The amount of protrusion of the protruding portion 90 from the plate surface is at least equal to or larger than the plate thickness dimension of the plate material. With this configuration, when the beam materials 10 are relatively displaced from each other in the longitudinal direction at the connecting portion of the beam material 10, the protruding portion end surface 92 of the protruding portion 90 is the edge surface 81 of the fitting hole 80. Contact with. The edge surface 81 of the fitting hole 80 is located at the end portion of the beam material 10 of the fitting hole 80 having a long hole shape in the longitudinal direction. When the beam members 10 are displaced in the longitudinal direction with the protrusion 90 inserted inside the fitting hole 80, the protrusion end surface 92 at the longitudinal end of the protrusion 90 becomes the edge of the fitting hole 80. Since it is hooked on the surface 81, the two stacked beam materials 10 are held so as not to be displaced in the longitudinal direction.

Therefore, for example, when the vehicle collides with the beam material 10B of the vehicle guard fence 100, the beam material 10B shifts from the support column 20B toward the support column 20C at the connection portion between the beam material 10A and the beam material 10B. , The protruding end surface 92 of each protruding portion 90 is hooked on the edge surface 81 of each fitting hole 80. Further, since the amount of protrusion from the plate surface of the protruding portion 90 is larger than the thickness dimension of the plate material constituting the beam material 10, the protruding portion end surface 92 and the edge surface 81 of the fitting hole 80 are securely fitted. .. Therefore, the beam material 10A and the beam material 10B do not separate from each other, and the beam material 10B does not come off from the support column 20, so that the vehicle guard fence 100 can receive the collided vehicle. As a result, the beam material 10B can exhibit the expected strength and energy absorption performance.

FIG. 10 is a cross-sectional view of the periphery of the protruding portion 90 when a plurality of beam materials 10 according to the first embodiment of the present invention are stacked. The beam material 10 according to the first embodiment includes a protrusion 90, but does not take up space during transportation or storage. As shown in FIG. 10, even if a plurality of beam materials 10 are stacked, the protrusion 90 fits into the recessed space on the front side of the protrusion 90 of the other beam material 10, so that the protrusion 90 is the other beam material 10. Does not interfere with the board surface.

With the above configuration, the vehicle guard fence 100 is prevented from being displaced from each other in the longitudinal direction, so that the number of bolt fastening points can be reduced as compared with the conventional case, but the strength and energy can be reduced. It does not reduce the absorption performance. Moreover, since the number of bolt fastening points can be reduced, there is an advantage that the working time can be reduced and the number of parts can be reduced when installing the vehicle guard fence 100.

10 beam material, 10A beam material, 10B beam material, 11 fixing bolt hole, 11a fixing bolt hole, 11b fixing bolt hole, 11c fixing bolt hole, 11d fixing bolt hole, 12 connection bolt hole, 12a connection Bolt holes for 12b connection, 16 bottoms, 18 tops, 20 stanchions, 20A stanchions, 20B stanchions, 20C stanchions, 21 bracket fixing bolts, 22 bracket fixing nuts, 30 brackets, 30A brackets, 30B brackets, 30C brackets, 31 Fixing bolts, 32 Fixing nuts, 33 Strut fixing parts, 34 Beam material fixing parts, 35 Fixing bolt insertion holes, 38 Bracket fixing bolt holes, 60 Connection bolts, 61 Connection nuts, 80 Fitting holes, 81 edge surface, 90 protrusions, 91 slits, 92 protrusion end faces, 100 protection fences for vehicles.

Claims (13)

A beam material for a vehicle guard rail that is formed of plate material and is attached to columns that are erected at predetermined intervals with the longitudinal direction horizontal.
The plate material is
It is provided with a protruding portion in which a part of the plate material is projected from the plate surface.
The protrusion is
A protrusion end face facing the longitudinal direction of the plate material is provided.
At least a part of the protrusion end face
It is arranged within the height range from the plate surface to the thickness dimension of the plate material.
A beam material for a vehicle guard rail, provided with a fitting hole for fitting the protrusion provided in another plate material at the other end portion in the longitudinal direction of the plate material. The protrusion is
The beam material for a vehicle guard rail according to claim 1, which is formed between two parallel slits provided side by side in the longitudinal direction of the plate material on the plate surface of the plate material. The protruding end face is
The beam material for a vehicle guard rail according to claim 1 or 2, which is perpendicular to the longitudinal direction of the plate material. The protrusion is
The beam material for a vehicle guard rail according to any one of claims 1 to 3, which protrudes to the side where the support column is arranged in a direction perpendicular to the plate surface of the plate material. The amount of protrusion of the protrusion from the plate surface is
The beam material for a vehicle guard rail according to any one of claims 1 to 4, which is equal to or larger than the plate thickness dimension of the plate material. The plate material is
A cross section perpendicular to the longitudinal direction is formed in an uneven shape,
The uneven shape is
It has two peaks and a valley formed between the peaks.
The protrusion is
The beam material for a vehicle guard rail according to any one of claims 1 to 5, which is formed on each of the tops of the two mountain portions. Equipped with connection bolt holes for inserting connection bolts
The protrusion is
At one end of the plate in the longitudinal direction, two places are formed on the top of the mountain.
The connection bolt holes are
The beam material for a vehicle guard rail according to claim 6, which is arranged between the protrusions provided at two locations on the top. The plate material is
At one end in the longitudinal direction, the bottom of the valley is provided with two fixing bolt holes.
The protrusion and the fixing bolt hole are
The beam material for a vehicle guard rail according to claim 6 or 7, which is arranged side by side in a direction perpendicular to the longitudinal direction of the plate material. The plate material is
At the other end of the plate in the longitudinal direction, each of the tops of the two peaks is provided with two fitting holes.
The distance between the two fitting holes is
The beam material for a vehicle guard rail according to any one of claims 6 to 8, which is equal to the distance between the protrusions provided at one end of the plate material. The protruding end face is
The beam material for a vehicle guard rail according to any one of claims 1 to 9, which is formed by a cross section of the plate material. The protruding end face is
The beam material for a vehicle guard rail according to any one of claims 1 to 10, which is formed on both sides of the protrusion in the longitudinal direction. The beam material for the vehicle guard rail according to any one of claims 1 to 11 and the beam material.
With the support erected on the ground,
The beam material of the vehicle guard fence is
Includes beam material for two vehicle guard rails, secured to the stanchions,
The beam materials of the two vehicle guard fences are
A vehicle guard rail that is partially overlapped and fixed to the stanchion by aligning the positions of the respective protrusions. The beam material of the guard rail for vehicles according to claim 9,
With the support erected on the ground,
The beam material of the vehicle guard fence is
Includes beam material for two vehicle guard rails, secured to the stanchions,
The beam materials of the two vehicle guard fences are
A vehicle guard rail that is partially overlapped and fixed to the strut with the protrusions aligned with the fitting holes.

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