JP2019108715A - Beam material of vehicle guard fence and beam material installation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam material and a beam material installation method for a vehicle guard fence, which can reduce the burden on a worker when installing a vehicle guard fence and reduce the usage time of the heavy machine when using a heavy machine or the like. offer. SOLUTION: The beam material of a vehicle guard rail according to the present invention is a beam material of a vehicle guard fence formed of a plate material and attached to columns erected at predetermined intervals, and the plate material is The plate is provided with an opening that penetrates the plate and an engaging claw that protrudes from one end of the opening in the longitudinal direction toward the support column. The width dimension of the tip portion of the engaging claw is formed longer than the width dimension of the root portion, and the width dimension in the direction perpendicular to the longitudinal direction of the plate material of the opening is longer than the width dimension of the tip portion of the engaging claw. [Selection diagram] Fig. 1

Description

  The present invention relates to a beam material of a protective fence for a vehicle, and more particularly to a structure of the beam material and a method of installing the beam material.

  Guard rails are installed as protective fences for vehicles provided on general roads and expressways. These vehicle protective fences prevent a vehicle whose direction of travel is wrong from deviating out of the road, and protect pedestrians and the like who pass along the sidewalk on the shoulder side. As disclosed in Patent Document 1, as a vehicle protection fence, one in which a beam material obtained by forming a plate material made of metal into a wave shape is fixed to a support erected at a predetermined interval.

Unexamined-Japanese-Patent No. 2007-211448

  The vehicle protective fence disclosed in Patent Document 1 uses a beam material in which a metal plate material is formed in a wave shape. Although 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 at the time of attachment, and holes provided in the bracket and holes provided in the beam material It is attached while aligning with. In recent years, workers are aging and it is desired that the protective fences for vehicles have a small workload. In the protective fence for a vehicle disclosed in Patent Document 1, there is a problem that the weight of the beam material is heavy and a burden is placed on an operator to be installed. In addition, when supported by a suspension band or the like, the beam material needs to be fixed to the bracket while supporting the beam material using a heavy machine or the like. Therefore, the time to use heavy machinery when fixing one beam material becomes long, and there existed a subject that the efficiency of operation fell.

  The present invention solves the above-mentioned problems, and in the installation of a protective fence for a vehicle, a beam material of a protective fence for a vehicle which reduces the work load when fixing a beam material to a bracket and improves work efficiency It aims at providing a beam material installation method.

  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, which is formed of a plate material and attached to a column erected at a predetermined distance, and the plate material is the plate material And an engaging claw which protrudes toward the support from the one end of the plate in the longitudinal direction of the opening, and the width dimension of the tip of the engaging claw is the width of the root The width of the opening in the direction perpendicular to the longitudinal direction of the plate is longer than the width of the tip of the engaging claw.

  In the method of installing a beam material of a protective fence for a vehicle according to the present invention, an engaging step of inserting an engaging claw projecting from a plate material into a notch provided at an end of a bracket attached to a support; And a fixing step of fixing to the bracket by a fastening member.

  The beam material installation method for a vehicle protection fence according to the present invention includes the first notch provided at the end of the first bracket attached to the first support and the end of the second bracket attached to the second support. A first plate engaging step in which the first plate is engaged with at least one of the second notches provided in the second plate, and a first plate fixing step in which the first plate is fixed to the first bracket by a fastening member; Equipped with

  According to the above configuration, the beam material and the beam material installation method of the vehicle protection fence are provided with the engagement claw and the opening portion that can be temporarily fixed when fixing the beam material to the vehicle protection fence. Since the burden on the operator at the time of installation is reduced and the usage time of the heavy machine can be reduced when using the heavy machine etc., the working efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the protective fence for vehicles which concerns on Embodiment 1 of this invention. It is the front view and top view explaining the structure of the bracket of FIG. It is a figure which shows the cross section of the fixing | fixed part of the beam material of FIG. 1, and a bracket. It is sectional drawing of the beam material of FIG. It is a figure which shows the cross section of the direction perpendicular | vertical to the longitudinal direction of the beam material of FIG. It is a figure which shows the state before installation of the beam material of the guard fence for vehicles of FIG. It is a figure in installation of the beam material of the guard fence for vehicles of FIG. It is an enlarged view of the bracket periphery of FIG. It is a figure in installation of the beam material of the guard fence for vehicles of FIG. It is an enlarged view of the engaging part of FIG.

Embodiment 1
FIG. 1 is a front view of a vehicle protection fence 100 according to a first embodiment of the present invention. FIG. 1 is a view from the side of a road through which a vehicle passes. The vehicle protection fence 100 is installed on the road shoulder of the road. The vehicle protection fence 100 prevents the vehicle traveling on the road from deviating off the road, that is, to an opposite lane, a sidewalk, or the like when the traveling direction is incorrect. In addition, we control that pedestrians come out to the road from sidewalks out of the road alone.

  The vehicle protection fence 100 is composed of a support 20 erected on the ground and a beam 10 fixed to the support 20. The columns 20 are erected on the ground with a predetermined distance. The bracket 30 of the beam material 10 is fixed to the support 20. The beam material 10 is formed by molding a metal plate. One beam 10 is fixed to at least two columns 20. 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 20A, and the bracket 30B is fixed to the support 20B. One end of the beam material 10B is fixed to a bracket 30B on which the beam material 10A is attached from the top of the beam material 10A. The other end of the beam member 10B is fixed to the bracket 30C. The bracket 30C is fixed to the support 20C.

(Bracket 30)
The vehicle protection fence 100 is configured by connecting a plurality of beam members 10 along a road. The beam members 10A and the beam members 10B adjacent to each other are fixed to a bracket 30B attached to a support 20B by overlapping end portions in the longitudinal direction. In FIG. 1, two beam members 10A and 10B are connected to three columns 20A to 20C, but the vehicle protection fence 100 is configured by connecting more beam members 10 May be The beam members 10A and 10B may be collectively referred to as a beam member 10. In addition, the columns 20A, 20B, and 20C may be collectively referred to as the column 20, and the brackets 30A, 30B, and 30C provided on the column 20 may be collectively referred to as the 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 view showing a cross section of a fixing portion of the beam material 10 and the bracket 30 of FIG. 2 (a) is a top view of the bracket 30, ie, a view from the upper side of FIG. 1, and FIG. 2 (b) is a front view of the bracket 30, ie, a view from the front of FIG. Of the The beam 10 is fixed to the support 20 via the bracket 30. At the end of the beam member 10, a fixing bolt hole 11 through which the fixing bolt 31 can be inserted is provided. The bracket 30 has a support fixing portion 33 fixed to the support 20 at a central portion, and has a beam material fixing portion 34 with the support fixing portion 33 interposed therebetween. The two beam material fixing portions 34 project toward the beam material 10 with respect to the column fixing portion 33, and are arranged in parallel so as to form substantially the same plane. The beam material fixing portion 34 has a fixing bolt insertion hole 35 through which the fixing bolt 31 can be inserted. The beam member 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. The bracket fixing bolt 21 is passed through the bracket fixing bolt hole 38 and the bracket fixing bolt 21 and the bracket fixing nut 22 are fastened to fix the column fixing portion 33 to the column 20. The support fixing portion 33 has a shape that conforms to the shape of the support 20, and is thus stably fixed to the support 20 by the bracket fixing bolt 21 and the bracket fixing nut 22.

  The bracket 30 has a notch in the beam material fixing portion 34. A notch 36 is formed at the center of the end 37 of the beam fixing portion 34, and a recess is cut into the rectangle from the end 37. The width of the notch 36 in the direction perpendicular to the longitudinal direction of the beam material 10 is formed larger than the width dimension w of the root portion 52 of the engaging claw 50 described later.

(Bolt hole 11 for fixing beam 10)
In FIG. 1, the fixing bolt holes 11a and 11b of the beam 10A are set at intervals 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 has fixing bolt holes 11c and 11d at one end and the other end of the beam material 10A in the longitudinal direction, and is provided at the beam material fixing portion 34 of the bracket 30B. An interval is set to correspond to the fixing bolt insertion hole 35. The beam material 10 may be provided with more fixing bolt holes 11.

  The beam material 10 has a corrugated cross section in the direction perpendicular to the longitudinal direction. In other words, the uneven shape is formed. The beam material 10 has a valley formed between two peaks and two peaks in a cross section perpendicular to the longitudinal direction. The fixing bolt holes 11 are provided in the bottom portion 16 of the valley (see FIG. 5 described later). Since the fixing bolt holes 11 are installed in the bottom portion 16 of the valley, the block-out amount, which is the distance from the support 20 to the beam material 10, can be increased.

(Bolt hole 12 for connecting beam 10)
As shown in FIG. 1, the beam material 10B is connected to the adjacent beam material 10A at one end. Since the beam members 10A and 10B have the same cross-sectional shape in the direction perpendicular to the longitudinal direction, they are overlapped with each other. In the beam member 10A and the beam member 10B, in the cross section perpendicular to the longitudinal direction, the connecting bolt holes 12 are provided at the tops of the two peak parts, and the positions of the connecting bolt holes 12 provided in each are aligned. It is piled up like that. The connection bolt 60 is inserted into the connection bolt hole 12 between the beam material 10A and the beam material 10B. The connection nut 61 is fastened to the inserted connection bolt 60, and the beam 10A and the beam 10B are coupled such that the overlapping portions are not separated. In the first embodiment, the beam material 10A and the beam material 10B are stacked such that the beam material 10B is located on the road side, and the connection bolts 60 are fastened in the four connection bolt holes 12 There is.

  A plurality of connecting bolt holes 12 are provided in the longitudinal direction of the beam member 10, and two connection bolt holes 12 are provided at the tops of the ridges of the uneven shape at both ends of the beam member 10. That is, eight connection bolt holes 12 are provided per one of the beam members 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 similarly formed.

(The opening 40 of the beam 10 and the engagement claw 50)
FIG. 4 is a cross-sectional view of the beam 10 of FIG. FIG. 5 is a view showing a cross section in a direction perpendicular to the longitudinal direction of the beam material 10 of FIG. The beam member 10 is provided with an opening 40 and an engaging claw 50 at the bottom 16 of the valley where the fixing bolt hole 11 is provided. Further, the beam member 10 is provided with an opening 40 and an engaging claw 50 at the top 18 of the peak portion where the connecting bolt hole 12 is provided. In FIG. 4, the structure of the opening 40 and the engagement claw 50 provided in the bottom 16 of the valley is shown. The opening 40 and the engagement claw 50 are collectively referred to as an engagement portion 90. The opening 40 is a hole that penetrates the beam material 10 formed of a plate material. An engaging claw 50 is connected to one end 42 of the peripheral edge 41 in the longitudinal direction of the beam member 10. The engagement claw 50 is formed from one end 42 of the peripheral edge 41 toward the other end 43 of the peripheral edge 41 and protrudes toward the back surface of the beam material 10. That is, the engagement claws 50 project from the beam 10 toward the side where the support 20 and the bracket 30 are located. Further, as shown in FIG. 4B, when viewed in the normal direction of the surface on which the opening 40 is provided, the engaging claw 50 is formed so as to be contained inside the peripheral edge 41 and be viewed. ing. That is, when the engaging claw 50 is projected on the surface on which the opening 40 is provided from the normal direction of the surface on which the opening 40 is provided, the projected engaging claw 50 fits inside the peripheral edge 41. .

  The other end 43 opposite to the one end 42 of the peripheral edge 41 to which the engagement claw 50 is connected is formed so as to narrow in width in the longitudinal direction of the beam material 10. That is, the oblique side 46 extends from the side 45 along the longitudinal direction of the beam material 10 of the peripheral edge 41 toward the central portion of the opening 40. The central portion of the other end portion 43 is a flat portion 44, and the flat portion 44 extends in a direction perpendicular to the longitudinal direction of the beam material 10. The width dimension h of the flat portion 44 is desirably set to be equal to or less than the width dimension w of the root portion 52 of the engagement claw 50.

  The engagement claw 50 has a root 52 extending from one end 42 of the opening 40, and a tip 51 formed wide at the tip of the root 52 with respect to the root 52 is formed. That is, the tip 51 protrudes in the direction perpendicular to the longitudinal direction of the beam material 10. The edge 53 of the tip end of the tip 51, that is, the edge 53 located on the other end 43 side of the opening 40 is formed in a similar shape to the other end 43 of the peripheral edge of the opening 40. The engagement claws 50 can be formed by cutting the plate material of the beam member 10 into the outer shape of the engagement claws 50 and the shape of the peripheral edge 41 of the opening 40 and bending the same. By doing this, the engaging claw 50 can be enlarged while the opening 40 is formed as small as possible. Therefore, the opening 40 can be arranged as inconspicuous as possible on the appearance of the beam material 10.

  The beam material 10 is formed by forming a plate material in a corrugated shape in a cross section perpendicular to the longitudinal direction. Beam material 10A is provided with six engaging parts 90. The engaging portions 90 are formed at three positions at the end of the beam 10A on the side attached to the support 20A. At the end of the beam member 10A attached to the support column 20A, engaging portions 90c and 90d are formed in two peak portions of the corrugated shape of the beam member 10, and 90a is formed in one valley. The engaging portions 90c and 90d provided at the top 18 of the peak of the beam 10A are connection bolts provided at two points at the top 18 of the peak of the end of the beam 10A attached to the support column 20A. It is provided so as to be located between the holes 12a and 12b. The engaging portion 90a provided at the bottom portion 16 of the valley portion of the beam 10A is located at the end of the two fixing bolt holes 11a and 11b provided at the end of the beam 10A on the side attached to the column 20A. positioned. When the two fixing bolt holes 11a and 11b provided at the bottom portion 16 of the valley portion of the beam member 10A are positioned to overlap the two fixing bolt insertion holes 35 of the bracket 30A, engagement of the engaging portion 90a The joint claw 50 is positioned to be inserted into the notch 36 at the end of the bracket 30A.

  Three engaging portions 90 of the beam 10A are formed at the end of the beam 10A on the side to be attached to the support 20B. At the end of the beam member 10A on the side attached to the support column 20B, engaging portions 90e and 90f are formed in two peak portions of the corrugated shape of the beam member 10A, and an engaging portion 90b is formed in one valley portion. ing. The engaging portions 90e and 90f provided at the top 18 of the peak of the beam 10A are provided between the connecting bolt holes 12c and 12d provided at two ends of the beam 10A on the side attached to the support 20A. It is provided to be located. The engagement portion 90b provided at the bottom portion 16 of the valley portion of the beam 10A is more beam material than the two fixing bolt holes 11c and 11d provided at the end of the beam 10A on the side attached to the support 20A. It is located on the center side in the longitudinal direction of 10A. When the two fixing bolt holes 11c and 11d provided at the bottom portion 16 of the valley portion of the beam 10A are positioned to overlap the two fixing bolt insertion holes 35 of the bracket 30B, engagement of the engaging portion 90b The joint claw 50 is positioned such that the root 52 is inserted into the notch 36 at the end of the bracket 30B. In addition, the engaging part 90 provided in the beam material 10 is installed with the same shape and the same direction.

  As shown in FIG. 1, the beam material 10 </ b> B includes five engaging portions 90. The engaging portions 90 are formed at two ends of the end of the beam member 10B on the side to be attached to the support 20B. At the end of the beam 10B attached to the support 20B, engaging portions 90c and 90d are formed on the tops 18 of the two peaks of the corrugated shape of the beam 10, respectively. The engaging portions 90c and 90d provided at the top 18 of the peak of the beam 10B are connection bolts provided at two points at the top 18 of the peak of the end of the beam 10B on the side attached to the column 20B. It is provided so as to be located between the holes 12a and 12b.

  When the end of the beam 10A attached to the support 20B and the end of the beam 10B attached to the support 20B are overlapped and the positions of the connecting bolt holes 12 are aligned, the engaging portion 90e of the beam 10A is engaged. And the engaging portion 90c of the beam member 10B, and the engaging portion 90f of the beam member 10A and the engaging portion 90d of the beam member 10B overlap each other. In this state, the engaging claws 50 of the engaging portions 90c and 90d on the beam material 10B side are inserted into the openings 40 of the engaging portions 90e and 90f on the beam material 10A side. The engaging claws 50 of the engaging portions 90c and 90d of the beam 10B are positioned closer to the support 10C than the engaging claws 50 of the engaging portions 90e and 90f of the beam 10A. Therefore, the distal end 51 of the engaging claw 50 formed wide is hooked on the oblique side 46 formed at the other end 43 of the opening 40 on the beam material 10B side. Thus, the beam material 10B superimposed on the beam material 10A is suppressed from moving away from the beam material 10A.

  At the end of the beam member 10B on the side attached to the support column 20C, engaging portions 90 are respectively provided on the top 18 of the two ridges and the bottom 16 of one valley of the corrugated shape of the beam 10B. It is formed one by one. The engaging portion 90b provided at the bottom portion 16 of the valley is at the longitudinal center of the beam 10B than the two fixing bolt holes 11 provided at the end of the beam 10B on the side attached to the column 20C. Located on the side. When the two fixing bolt holes 11 provided at the bottom portion 16 of the valley portion of the beam member 10B are positioned to overlap the two fixing bolt insertion holes 35 of the bracket 30C, the engaging claws of the engaging portion 90b 50 are positioned so that the root 52 is inserted into the notch 36 at the end of the bracket 30B.

(Beam material 10 installation method)
FIG. 6 is a view showing the state of the beam guard 10 of the vehicle protection fence 100 of FIG. 1 before installation.
As shown in FIG. 6, first, the columns 20 are erected at predetermined intervals. The distance between the columns 20 can be appropriately set according to the use of the beam material 10. Brackets 30 for fixing the beam members 10 are attached to the columns 20 respectively.

(The engagement process of beam material 10A)
FIG. 7 is a view during installation of the beam material 10A of the vehicle protection fence 100 of FIG. As shown in FIG. 7, first, the beam material 10A is disposed to pass between the support 20A and the support 20B. The beam material 10 is disposed so that the positions of the fixing bolt holes 11a and 11b of the beam material 10A and the fixing bolt insertion hole 35 of the bracket 30A are aligned while being supported by, for example, a suspension band. At this time, the engaging claws 50 of the engaging portion 90a protruding from the back surface of the beam member 10A, that is, the surface on the side of the column 20A, are inserted into the notch 36 of the bracket 30A. Further, the engaging claws 50 of the engaging portion 90b are inserted into the notches 36 of the bracket 30B. The fixing bolt holes 11a and 11b correspond to the "fixing holes" in the present invention. Further, the engagement claw 50 of the engagement portion 90a corresponds to the "first engagement claw" of the present invention, and the notch 36 of the bracket 30A corresponds to the "first notch" of the present invention.

  FIG. 8 is an enlarged view of the vicinity of the bracket 30A of FIG. In this state, the root portion 52 of the engagement claw 50 of the engagement portion 90 a is inserted inside the notch 36. The tip end portion 51 of the engaging claw 50 is located on the back side of the bracket 30A, that is, on the side of the support 20A. The width of the distal end portion 51 of the engagement claw 50 is formed larger than the width of the notch 36. Therefore, the front end 51 of the engagement claw 50 is caught on the bracket 30A, and the beam 10A is prevented from coming off the near side in FIG. 7, that is, the beam 10A from the bracket 30A.

  As shown in FIG. 7, at the end of the beam 10A attached to the bracket 30B, the beam 10A is located at the fixing bolt hole 11 of the beam 10A and the fixing bolt insertion hole 35 of the bracket 30B. Are arranged to fit. The engagement claws 50 of the engagement portion 90b protruding from the surface on the side of the column 20B are inserted into the notches 36 of the bracket 30B. Similarly to the engaging portion 90a, the engaging claw 50 of the engaging portion 90b prevents the distal end portion 51 of the engaging claw 50 from being caught by the bracket 30B and moving the beam 10A away from the bracket 30A. That is, the engaging portion 90b and the notch 36 of the bracket 30B are also engaged in the same state as in FIG.

  As described above, the process of inserting and engaging the engagement claws 50 of the engagement portions 90a and 90b of the beam 10A into the notches 36 of the brackets 30A and 30B is referred to as "engagement process". . Alternatively, when the beam material 10A is a "first plate material", a process of engaging the "first plate material" is referred to as a "first plate material engaging process". In the present invention, the beam material 10A is "first plate material", the bracket 30A is "first bracket", the bracket 30B is "second bracket", the notch 36 of the bracket 30B is "second notch", the support 20A Is the “first support”, and the support 20B is equivalent to the “second support”.

  In addition, the engaging part 90a arrange | positioned at the support | pillar 20A side of 10 A of beam materials does not need to be provided. If the beam 10A does not have the engaging portion 90a, it can not be engaged with the bracket 30A. However, in a state where only the engaging portion 90b is engaged with the bracket 30B, the fixing bolt 31 and the fixing nut 32 are fixed to the fixing bolt holes 11a and 11b while supporting the end of the beam member 10A on the support 20A side. It can be concluded. Therefore, the work load for attaching the beam material 10A to the columns 20A and 20B can be reduced as compared with the conventional case. Further, by not providing the engaging portion 90a in the beam member 10A, the beam member 10B has the same shape as the beam member 10B, so that all the beam members 10 of the vehicle protection fence 100 can be made common.

(Fixing process of beam material 10A)
As shown in FIG. 7, in the beam member 10A, the engagement claw 50 is engaged with the bracket 30A and the bracket 30B. Therefore, it is not necessary to support the beam material 10A with a heavy machine or the like using a suspension band, and the beam material 10A can be temporarily fixed to the bracket 30A and the bracket 30B. In this state, the fixing bolt 32 is passed through the fixing bolt 31 through the fixing bolt holes 11a and 11b of the beam material 10A and the fixing bolt insertion hole 35 of the bracket 30A, and the beam material 10A is fixed to the bracket 30A. It can be fixed. This process is called "fixing process". Alternatively, when the beam material 10A is a "first plate material", a process of fixing the "first plate material" is referred to as a "first plate material fixing process". The fixing bolt 31 and the fixing nut 32 correspond to the “fastening member” in the present invention.

(Beam material 10B engagement process)
FIG. 9 is a view during installation of the beam material 10B of the vehicle protection fence 100 of FIG. As shown in FIG. 9, the beam material 10B is disposed to be passed between the support 20B and the support 20C. The beam material 10B is arranged such that the connection bolt holes 12a and 12b of the beam material 10B and the connection bolt holes 12c and 12d of the beam material 10A are aligned while being supported by, for example, a suspension band. At this time, the engaging claws 50 of the engaging portion 90c projecting on the back surface of the beam 10B, that is, the surface on the side of the column 20B, are inserted into the opening 40 of the engaging portion 90e of the beam 10A. In addition, the engagement claws 50 of the engagement portion 90d protruding from the back surface of the beam member 10B are inserted into the opening 40 of the engagement portion 90f of the beam member 10A.

  FIG. 10 is an enlarged view of the engaging portions 90c, 90d, 90e, and 90f of FIG. When the connecting bolt holes 12a and 12b of the beam 10B are aligned with the connecting bolt holes 12c and 12d of the beam 10A, the engaging portions 90c and 90d of the beam 10B and the engaging portion of the beam 10A are aligned. 90e and 90f are engaged as shown in FIG. That is, the engagement claw 50 of the engagement portion 90c of the beam 10B is inserted into the opening 40 of the engagement portion 90e of the beam 10A. The root 52 of the engaging claw 50 of the engaging portion 90c of the beam 10B is positioned to overlap the flat portion 44 of the other end 43 of the opening 40 of the engaging portion 90e of the beam 10A. . Therefore, the engaging claw 50 of the engaging portion 90c of the beam 10B is caught on the other end 43 of the opening 40 of the engaging portion 90e of the beam 10A. The same applies to the engaging portion 90d of the beam 10B and the engaging portion 90e of the beam 10A. Therefore, the beam material 10B is engaged so as not to drop out of the beam material 10A in a state of being overlapped with the beam material 10A.

  Furthermore, at the end of the beam member 10B on the side fixed to the column 20C in FIG. 9, the engaging portion 90b of the beam member 10B and the notch 36 of the bracket 30C engage in the same state as FIG. ing. Thus, the beam member 10B engages with the beam member 10A at the end on the column 20B side, engages with the bracket 30C at the end on the column 20C side, and does not come off from the beam member 10A and the bracket 30C It is temporarily fixed. As described above, the process of engaging the beam material 10B with the beam material 10A and the bracket 30C is referred to as an "engagement process". Or when the beam material 10B is made into a "2nd board | plate material", the process which makes this "2nd board | plate material" engage is called a "2nd board | plate material engagement process." In the present invention, the beam member 10B is a "second plate material", the engaging claws 50 of the engaging portions 90c and 90d of the beam member 10B are a "second engaging claw", the bracket 30C is a "third bracket", a bracket The notch 36 of 30 C corresponds to the “third notch”, and the column 20 C corresponds to the “third column”.

(Fixing process of beam material 10B)
As shown in FIG. 9, in the beam material 10B, the engagement claw 50 is engaged with the beam material 10A and the bracket 30C. Therefore, it is not necessary to support the beam material 10A with a heavy machine or the like using a suspension band, and the beam material 10B can be temporarily fixed to the beam material 10A and the bracket 30B. In this state, the beam material 10B can be fixed to the bracket 30A by passing the fixing bolt 31 through the fixing bolt holes 11a and 11b of the beam material 10B and the fixing bolt insertion hole 35 of the bracket 30B. Further, since the beam material 10A is sandwiched between the bracket 30B and the beam material 10B, the beam material 10A is also fixed to the bracket 30B by fixing the beam material 10B to the bracket 30B. It will be. This process of fixing the beam material 10A and the beam material 10B to the bracket 30B is referred to as a "fixing process". Alternatively, when the beam material 10B is a "second plate material", a process of fixing the "second plate material" is referred to as a "second plate material fixing process". The "first plate material" is also fixed to the "second bracket" by the "second plate material fixing step".

  When the beam 10B is fixed to the bracket 30B, the beam 10A and the beam 10B are fixed to each other. That is, the connection bolt 60 is passed through the connection bolt hole 12a of the beam member 10B and the connection bolt hole 12c of the beam member 10A and fastened by the connection nut (not shown), so that the beam member 10A and the beam member 10B Can be fixed so as not to leave. Further, the connecting bolt holes 12b of the beam 10B and the connecting bolt holes 12d of the beam 10A are similarly fixed by the connecting bolts 60. The “second plate fixing step” may include a step of fastening the connection bolt 60 described above. The connection bolt 60 and the connection nut correspond to the “fastening member” in the present invention.

  After the fixing process of the beam material 10B is completed, another beam material 10 can be engaged with and fixed to the beam material 10B and the bracket 30 of the other support column 20. That is, the protection fence 100 for vehicles can be installed still longer by applying the said 2nd board | plate material engagement process and a 2nd board | plate material fixation process to the other beam material 10, and performing repeatedly.

  By performing the beam material installation method as described above, when installing the beam material 10 on the existing support 20 or the new support 20, the burden on the operator is reduced, or when using a heavy equipment etc. The use time can be reduced. Thus, installation of the vehicle protection fence 100 is facilitated, and the number of installation steps can also be reduced. Further, also in the operation of removing the beam 10 from the support column 20, even if the connecting bolt 60 and the fixing bolt 31 are removed, it is difficult for the beam 10 to be detached from the position where the beam 10 is attached. Therefore, there is an advantage that the work of supporting the beam material 10 is reduced also in the work of removing the beam material 10.

  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 12b connection bolt holes 12c connection bolt holes 12d connection bolt holes 16 bottom 18 top 20 columns 20A columns 20B columns 20C columns 21 bracket fixing bolts 22 bracket fixing nuts Reference Signs List 30 bracket, 30A bracket, 30B bracket, 30C bracket, 31 fixing bolt, 32 fixing nut, 33 post fixing portion, 34 beam fixing portion, 35 fixing bolt insertion hole, 36 notch, 37 end, 38 bracket Fixing bolt holes, 40 openings, 41 rims , 42 one end portion, 43 other end portion, 44 flat portion, 45 side, 46 oblique side, 50 engagement claw, 51 tip portion, 52 root portion, 53 edge portion, 60 connection bolt, 61 connection nut, 90 engagement Part, 90a engaging part, 90b engaging part, 90c engaging part, 90d engaging part, 90e engaging part, 90f engaging part, 100 vehicle protection fence.

Claims (12)

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,
The plate material is
An opening through the plate;
And an engaging claw protruding toward the support from the one end of the plate in the opening in the longitudinal direction,
The width dimension of the tip of the engagement claw is
Longer than the width of the root,
The width dimension of the opening in the direction perpendicular to the longitudinal direction of the plate material is
The beam material of the guard fence for vehicles longer than the width dimension of the tip part of the engagement claw. The periphery of the opening is
The one end at which the engagement claw is provided;
The other end opposite to the one end;
The other end is
The beam material of the guard fence for vehicles according to claim 1 formed so that width may become narrow toward the longitudinal direction of said board material. The engagement claw is
The beam for a vehicle protection fence according to claim 2, wherein the beam is formed so as to be located inside the peripheral edge of the opening when viewed from the normal direction of the surface of the plate on which the opening is provided. Material. The opening is
A flat portion is formed at the central portion of the other end portion,
The length of the flat portion is
The beam material of the guard fence for vehicles according to claim 2 or 3 formed in the length below the width dimension of said root part of said engaging claw. One end and the other end of the plate in the longitudinal direction are
In each of the holes, a fixing hole for passing a fastening member, the opening, and the engagement claw are formed.
The opening and the engagement claw are
When the fixing hole at the one end and the fixing hole at the other end are overlapped,
The flat portion of the opening formed at the one end is arranged to overlap the root of the engaging claw formed at the other end. Beam material of guard fences for vehicles. The plate material is
The cross section perpendicular to the longitudinal direction is formed in a concavo-convex shape,
The uneven shape is
Comprising two peaks and a valley formed between the peaks,
The opening and the engagement claw are
The beam material of the guard fence for vehicles according to any one of claims 1 to 5 formed in two places at each of the peak part of two said peak parts. The opening and the engagement claw are
The beam material of the guard fence for vehicles according to claim 6 formed in the bottom of said valley. An engagement step of inserting an engagement claw projecting from the plate material into a notch provided at an end of the bracket attached to the support;
And a fixing step of fixing the plate member to the bracket by a fastening member.   At least one of a first notch provided at the end of the first bracket attached to the first support and a second notch provided at the end of the second bracket attached to the second support A beam material installation method for a vehicle protection fence, comprising: a first plate engaging step of engaging a plate; and a first plate fixing step of fixing the first plate to the first bracket by a fastening member. The second engaging claws protruding from the second plate are inserted into the opening provided in the first plate, and the opening of the first plate and the second engaging claws of the second plate are engaged. Let
At the other end portion of the second plate member positioned opposite to the one end portion engaged with the first plate member, the first engagement claw protruding from the second plate member is attached to the third support post The method according to claim 9, further comprising: a second plate engaging step of inserting the third plate into the third notch provided at the end of the third bracket.   The method according to claim 10, further comprising: a second plate fixing step of fixing the first plate and the second plate to the second bracket by a fastening member. After the second plate fixing step,
The vehicle protection according to claim 11, wherein the second plate material is used as the first plate material, and another plate material is used as the second plate material, wherein the second plate material engaging step and the second plate member fixing step are repeatedly performed. Beam installation method of fence.

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