Falling object prevention fence

Abstract

To provide a falling object prevention fence capable of regulating displacement of an elastic member abutting on a panel plate even if installed for a long period of time.SOLUTION: A fence comprising a column, a fastening member, a strut having a plate pressing member attached to the column by the fastening member, and a panel plate attached to the strut by being sandwiched between the plate pressing member and the column, wherein an elastic member is disposed between at least one of the panel plate, the plate pressing member, and the column, and an engagement portion of the strut is inserted into and engaged with an engagement receiving portion formed in the elastic member. Since the engaging portion of the support is inserted into and engaged with the engagement receiving portion formed in the elastic member, the movement of the elastic member due to vibration or the like is restricted by the engagement of the engaging portion, and the elastic member can be prevented from falling off.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a fence to be installed along roads or railway tracks. [Background technology]

[0002] Fences installed along roads and railways are used to prevent cargo that has fallen off a vehicle or objects that have been thrown away from the road from moving in the opposite direction, and various inventions have been proposed. For example, in Patent Document 1, the applicant has proposed a falling object prevention fence which comprises a support post extending and erected along the roadway, a panel attached to the front side of the support post, and a panel retainer attached to the front side of the panel so as to hold the panel between it and the support post, and which is designed so that cargo which strikes the roadway side of the panel horizontally at an angle of 15° slides over the front of the panel and the front of the panel retainer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-063912 Summary of the Invention [Problem to be solved by the invention]

[0004] The falling object prevention fence in Patent Document 1 has a structure in which the panel is sandwiched between a support post and a panel retainer, and a gasket made of hard rubber material is sandwiched between the panel, the panel retainer 2, and the support post; however, there is a possibility that the position of the gasket may shift over a long period of time due to vibrations from vehicles being transmitted to the installed fence.

[0005] The present invention provides a falling object prevention fence that can prevent displacement of an elastic member abutting against a panel board even when installed for a long period of time. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention has the following configuration. In other words, the falling object prevention fence of the present invention is a fence comprising a pillar body, a fastening member, a support post having a plate clamping member attached to the pillar body by the fastening member, and a panel plate that is clamped between the plate clamping member and the pillar body and attached to the support post, and is characterized in that an elastic member is arranged between at least the panel plate and either the plate clamping member or the pillar body, and the engaging portion of the support post is inserted into and engages with an engaging receiving portion formed on the elastic member.

[0007] The falling object prevention fence of the present invention comprises a pillar body, a fastening member, a support post having a plate clamping member attached to the pillar body by the fastening member, and a panel plate that is attached to the support post by being sandwiched between the plate clamping member and the pillar body.Therefore, the panel plate, which is installed in a wall-like shape, can effectively restrict the movement of objects such as fallen objects from vehicles in the opposite direction. Furthermore, since an elastic member is disposed between at least the panel plate and either the plate pressing member or the column body, rattling of the panel plate due to wind pressure or vibration can be suppressed. Furthermore, since the engaging portion of the support is inserted into and engaged with the engaging receiving portion formed on the elastic member, movement of the elastic member due to vibration or the like is restricted by the engagement of the engaging portion, preventing it from falling off.

[0008] Furthermore, it is preferable to configure the engagement receiving portion as a through hole formed in the elastic member and insert the engagement portion of the support into this through hole to engage, as this will allow the engagement portion of the support to engage more firmly with the elastic member.

[0009] Furthermore, it is preferable to place the elastic members between the panel plate and the support pillar, and between the panel plate and the plate clamping material, and insert the engaging portions into each elastic member to engage with it, since the movement of each elastic member that suppresses rattling of the panel plate can be regulated by the engagement of the engaging portions.

[0010] Furthermore, it is preferable to form multiple engagement receiving portions of the elastic member at intervals in the vertical direction and insert the engagement portion into each engagement receiving portion to engage it, as this will restrict the rotational movement of the elastic member around the engagement portion as an axis.

[0011] Furthermore, it is preferable to attach two panel plates arranged in the longitudinal direction to the support, position the elastic member so that it spans each of the panel plates, and insert the engaging portion arranged between each of the panel plates into the elastic member to engage it, as this makes it possible to easily attach the elastic member that suppresses rattle between the two panel plates.

[0012] Furthermore, if the engaging portion is constructed as a convex portion formed on the pillar, a female thread portion is provided on this engaging portion, and the plate clamping material is fixed to the pillar by the fastening member that is fastened to the female thread portion, this is preferable, as the plate clamping material can be easily attached to the pillar by utilizing the engaging portion that restricts the movement of the elastic member.

[0013] Furthermore, if the engaging portion is formed from the fastening member and this fastening member is inserted into and engaged with the engaging receiving portion of the elastic member, it is possible to restrict the movement of the elastic member without forming an engaging portion on a pillar body, plate holder, etc., which is preferable. [Effects of the Invention]

[0014] According to the falling object prevention fence of the present invention, even if it is installed for a long period of time, it is possible to prevent the elastic member abutting against the panel board from shifting in position. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing an embodiment of a falling object prevention fence according to the present invention. [Figure 2] FIG. 2 is an enlarged view of the vicinity of the upper part of the support pillar in FIG. [Figure 3] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 4] FIG. 4 is a front view showing a column body of the support column of FIGS. [Figure 5] FIG. 5 is an enlarged view of the upper part of FIG. 4. [Figure 6] FIG. 5 is a left side view of FIG. 4. [Figure 7] FIG. 7 is an enlarged view of the upper part of FIG. 6. [Figure 8] FIG. 5 is a plan view of FIG. [Figure 9] FIG. 6 is a BB end view of FIG. 5. [Figure 10] FIG. 4 is a front view showing the plate holder of FIGS. [Figure 11] FIG. 4 is a front view showing the elastic member of FIG. 3. [Figure 12] 12 is a diagram showing a state before the elastic member of FIG. 11 is attached to the pillar body of FIG. 8. FIG. [Figure 13] 13 is a diagram showing a state in which an elastic member is attached to the pillar body of FIG. 12. FIG. [Figure 14] 14 is a diagram showing a state in which a panel plate is brought into contact with the elastic member of FIG. 13. FIG. [Figure 15] 15 is a view showing a state in which an elastic member and the plate retainer of FIG. 9 are attached to the pillar body of FIG. 14. FIG. [Figure 16] FIG. 10 is a diagram showing another embodiment of the falling object prevention fence according to the present invention. [Figure 17] 10A and 10B are diagrams showing another embodiment of an elastic member of a falling object prevention fence according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described with reference to the accompanying drawings. The falling object prevention fence 1 is formed in the shape of a wall with panel plates 6 erected between support posts 2 set up at intervals. The support 2 has a column body 3 with a column portion 31, a plate pressing member 4, and a fastening member 5 made of a bolt, and the column body 3 is erected on the installation surface. Reinforcing members 8 made of steel are installed between the pillar bodies 3 of each support pillar 2 to increase the strength of the falling object prevention fence 1. In the following description, the left-right direction in FIG. 1 is the longitudinal direction, the up-down direction in the figure perpendicular to the longitudinal direction is the up-down direction, and the direction perpendicular to the longitudinal direction and the up-down direction is the front-rear direction. The falling object prevention fence 1 shown in Figure 1 is installed along the road or railway (not shown) located in front of it, and a panel plate 6 attached to the front side of the pillar body 3 is installed to prevent falling objects or thrown objects from passing vehicles from reaching the other side. In addition, although the reinforcing members 8 made of steel in FIGS. 1 to 3 are formed using channel steel, H-shaped steel or other steel materials may also be used.

[0017] 2 is an enlarged view of the upper part of the support column 2 in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. The panel plate 6 has an outer shape of a substantially rectangular flat plate and is made of a light-transmitting synthetic resin, specifically a transparent polycarbonate plate. The panel board 6 has a rectangular, flat body 61 and an upper end portion 62 that bends and extends diagonally upward from the top of the body, and the upper end portion 62 is formed by bending the polycarbonate plate that constitutes the panel board 6. By forming an upper end portion 62 on the main body 61, the rigidity of the panel plate 6 is improved. Two panel plates 6 arranged adjacent to each other in the longitudinal direction have both ends of a fall prevention wire W inserted through the web 31a of the pillar body 3 fixed thereto, preventing the panel plates 6 from falling off the pillar 2 in the event of an accident or disaster. The material of the panel board 6 is not limited to synthetic resin, and other materials such as glass or metal may also be used.

[0018] The plate retainer 4 of the support 2 is fixed to the column body 3 by screwing a fastening member 5 inserted from the front side. The panel board 6 has an edge portion of the main body 61 disposed between the board pressing member 4 and the pillar portion 31 and clamped between these members. Elastic members 7 are disposed between the panel plate 6 and the plate retaining member 4, and between the panel plate 6 and the column portion 31. By attaching the elastic members 7 between the panel plate 6 and each member that clamps the panel plate 6, rattling of the panel plate 6 caused by wind and vibrations that the falling object prevention fence 1 receives can be suppressed.

[0019] Figure 4 is a front view showing the column body 3 of the support 2 of Figures 1 to 3, Figure 5 is an enlarged view of the upper part of Figure 4, Figure 6 is a left side view of Figure 4, Figure 7 is an enlarged view of the upper part of Figure 6, Figure 8 is a plan view of Figure 4, and Figure 9 is a BB end view of Figure 5. The column body 3 has a flat base portion 32 at the lower end of a column portion 31, and the base portion 32 is fixed to an installation surface so as to stand upright. The column portion 31 is formed of steel, specifically, an H-shaped steel having two flanges 31b, 31c and a web 31a connecting these. The web 31a of the column portion 31 is formed with mounting portions 38 for mounting the reinforcing material 8, and the mounting portions 38 are formed in the shape of a flat plate and are arranged so as to protrude on both sides in the longitudinal direction.

[0020] The column portion 31 of the column body 3 shown in Figures 4 to 9 is formed with insertion portions 33. The insertion portions 33 are formed in convex portions that are rectangular in front view and protrude forward from the outer surface of the flange 31b of the column portion 31, and twelve insertion portions 33 are formed in three sets of four with gaps in the vertical direction. Each inserting portion 33 is formed by bending a metal plate, and the end of the inserting portion 33 formed in a roughly U-shape when viewed from the side is fixed to the outer surface of the flange 31b by welding. Each insertion portion 33 has an internally threaded portion 33a formed by a nut member fixed inside. Each internally threaded portion 33a is provided so that the externally threaded portion of the fastening member 5 can be screwed onto it from the front side, and the plate retainer 4, elastic member 7, and panel plate 6 are attached to the column portion 31 by the fastening member 5 screwed onto this internally threaded portion 33a. Each of the insertion portions 33 functions as an engagement portion that is inserted into and engaged with an engagement receiving portion of the elastic member 7, which will be described later.

[0021] FIG. 10 is a front view showing the plate retainer 4 of FIGS. The plate holder 4 is formed of a rectangular flat metal plate, specifically a zinc-plated steel plate. Four circular through holes 41 that penetrate in the front-to-rear direction are formed in the plate holder 4 at intervals in the vertical direction. Each through hole 41 is formed to a size that allows the male thread portion of the fastening member 5 to be inserted therethrough, and is formed in an arrangement that corresponds to the insertion portion 33 of the pillar. The plate holder 4 in Fig. 10 is provided so that three plate holders 4 can be attached to the pillar 3 shown in Figs. 4 to 9 in a vertical arrangement.

[0022] FIG. 11 is a front view showing the elastic member 7 of FIG. The elastic member 7 is formed of a synthetic rubber material in the shape of a rectangular flat plate, and specifically, is formed of ethylene propylene rubber (EPDM). The material of the elastic member 7 is not limited to synthetic rubber such as EPDM, but natural rubber, synthetic resin elastomer, or other elastic materials may also be used.

[0023] Four rectangular through-holes 71 penetrating in the front-rear direction are formed at intervals in the up-down direction in the elastic member 7. Each through-hole 71 is formed with a size and arrangement that allows the insertion portion 33 of the column body 3 to be inserted therethrough, and functions as an engagement receiving portion into which each insertion portion 33 serving as an engagement portion is inserted and engaged. The elastic members 7 in FIG. 11 are provided so that three of them are attached to the columnar body 3 shown in FIGS. 4 to 9 in a vertical arrangement.

[0024] The through holes 71, which function as engagement receiving portions, are formed so that the size of the vertical interval Y is larger than the size of the width X along the longitudinal direction of the elastic member 7. By forming them in this manner, the work of inserting the insertion portions 33, which serve as engagement portions of the support 2, into the through holes 71 and engaging them to attach them can be performed more easily.

[0025] Figure 12 is a diagram showing the state before the elastic member 7 of Figure 11 is attached to the pillar body 3 of Figure 8, and Figure 13 is a diagram showing the state after the elastic member 7 is attached to the pillar body 3 of Figure 12. In Figures 12 and 13 and Figures 14 and 15 described below, the mounting part 38 and base part 32 of the pillar body 3 and the upper end part 62 of the panel board 6 are omitted to simplify the drawings. In addition, the elastic members 7A and 7B shown in Figures 12 to 15 are formed in the same shape as the elastic member 7 shown in Figure 11. 12 and 13, the column 3 is erected on the installation surface. Figure 12 shows the situation in which the elastic member 7A is attached from the front side where roads and railroad tracks are located, and the elastic member 7A is attached by inserting and engaging each insertion portion 33 of the column portion 31 into each of the through holes 71, as shown in Figure 13. Double-sided tape (not shown) is attached to the rear surface of each elastic member 7, and this double-sided tape attaches the elastic member 7A to the column portion 31, preventing the elastic member 7A from falling off the column portion 31 during work.

[0026] The elastic member 7A shown in FIG. 13 is restricted in its longitudinal and vertical movement relative to the column 3, as well as its rotational movement, by the insertion portions 33 inserted into the through-holes 71. The three elastic members 7A shown in FIG. 13 are arranged with almost no gaps in the vertical direction and attached to the column 3. Of the elastic members 7A, only the lowest elastic member 7A is formed in a slightly different shape from the other elastic members 7A to match the arrangement of the insertion portion 33 of the column 3.

[0027] The panel plate 6 is attached by abutting the longitudinal edge portion of the main body 61 against the elastic member 7A shown in FIG. Figure 14 is a diagram showing a state in which the panel plate 6 is in contact with the elastic member 7A of Figure 13. Two panel plates 6 shown in Figure 14 are arranged at a distance in the longitudinal direction, with the rear surfaces of their edge portions in contact with the elastic member 7A. Furthermore, each panel plate 6 has its edge portion in contact with the elastic member 7A over substantially the entire vertical length of the main body 61.

[0028] Each panel plate 6 shown in FIG. 14 is attached to a pillar 3 by a plate holder 4 which is fixed to a pillar portion 31 by a fastening member 5. FIG. 15 is a diagram showing a state in which the elastic member 7B and the plate retainer 4 of FIG. 9 are attached to the columnar body 3 of FIG. The elastic member 7B shown in FIG. 15 is attached by inserting the insertion portions 33 of the column portions 31 into the through holes 71 and abutting the rear surfaces of the insertion portions 33 against the panel plates 6. The elastic members 7B shown in Figure 15, like the elastic members 7A shown in Figure 13, are arranged in three pieces with almost no gaps in the vertical direction, and abut against almost the entire vertical edge portion of the main body 61 of each panel plate 6. The elastic member 7B shown in FIG. 15 is restricted in its longitudinal and vertical movement and rotational movement by the insertion portions 33 inserted into the through holes 71, similarly to the elastic members 7A.

[0029] The plate holder 4 shown in FIG. 15 is fixed to the column 3 by inserting a fastening member 5 into the through-hole 41 and screwing it into the female thread portion 33a of the insertion portion 33, and applying strong pressure to the rear surface of the elastic material 7B. Each panel board 6 is firmly secured to two members, the flange 31b of the column 31 and the board retainer 4, by screwing the fastening member 5 into the female threaded portion 33a. In addition, each panel board 6 is attached by disposing elastic members 7A and 7B between the flange 31b and the board retainer 4 and the main body 61, respectively, thereby suppressing rattling caused by vibration or wind. In the falling object prevention fence 1 shown in FIGS. 1 to 3, each panel plate 6 is attached to the support pole 2 in the manner shown in FIG. As shown in Figures 12 to 15, the falling object prevention fence 1 can be constructed by attaching the panel board 6 to the support pillars 2 from the front side where vehicles pass, such as on a road or railway, so there is no need to install scaffolding on the rear side on an overpass, etc., making construction easy.

[0030] FIG. 16 is a diagram showing another embodiment of a falling object prevention fence according to the present invention. The falling object prevention fence shown in Figure 16 differs from the falling object prevention fence 1 shown in Figures 1 to 15 in that the insertion portion is not formed on the pillar, but rather the male thread portion of the fastening member that fixes the panel plate and plate clamping member to the pillar serves as the engaging portion, which is inserted into the engaging receiving portion of the elastic member to engage. The falling object prevention fence shown in Figure 16 comprises a support post having a column body 3C, a plate clamping member 4C, and a fastening member 5C consisting of a bolt, and a panel plate 6C having a rectangular plate-shaped main body 61, and is formed by erecting the panel plate 6C between the support posts spaced apart in the longitudinal direction. The columnar body 3C also includes flanges 31b, 31c and a web 31a. Although only one end of each panel plate 6C is shown in FIG. 16, the other end is also attached to the support in the same manner as in FIG.

[0031] 16, a female thread portion 35 that can be threadedly engaged with the male thread portion of the fastening member 5C is formed on the flange 31b of the column body 3C. A plurality of female thread portions 35 are formed at intervals in the vertical direction. The plate clamping member 4C is fixed to the column body 3C by inserting a fastening member 5C through the male threaded portion from the front side and screwing it into the female threaded portion 35, and each panel plate 6C is clamped between the plate clamping member 4C and the column portion 31 (flange 31b) of the column body 3C.

[0032] 16 has through holes formed in the front-rear direction at the edge of the main body 61. A plurality of the through holes are formed in an arrangement corresponding to each of the female threaded portions 35, and the male threaded portions of each of the fastening members 5C are inserted into these through holes. In addition, elastic members 7C are arranged between the panel plate 6C and the column body 3C, and between the panel plate 6C and the plate clamping member 4C, and the male thread portions of each of the fastening members 5C, which serve as engagement portions, are inserted into and engaged with the through holes formed in each of the elastic members 7C, which serve as engagement receiving portions.

[0033] 1 to 15, the falling object prevention fence shown in Fig. 16 has insertion parts inserted into and engaged with the through-holes of the elastic members 7C, thereby restricting longitudinal and vertical movement of the elastic members 7C relative to the pillars 3. Furthermore, since a plurality of the through-holes formed in each elastic member 7C are formed at intervals in the vertical direction, the engagement of the insertion parts inserted into the through-holes also restricts rotational movement of the elastic members 7C.

[0034] The falling object prevention fence according to the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, in the falling object prevention fence 1 shown in Figures 1 to 15 and the falling object prevention fence shown in Figure 16, elastic members having through holes for inserting the insertion parts are arranged on both the front and rear sides of the panel plate 6, but this is not limited to this. The elastic member having through holes for inserting the insertion parts may be arranged on only one side of the panel plate 6, either the front or rear, and an elastic member with a different configuration may be arranged on the other side.

[0035] In the falling object prevention fence 1 shown in Figures 1 to 15 and the falling object prevention fence shown in Figure 16, the engagement receiving portions of the elastic members that engage with the engagement portions of the posts are formed as through holes, but this is not limited to this and the elastic members may be formed in other shapes that can engage with the engagement portions. Figure 17 is a diagram showing another embodiment of the elastic member 7 of the falling object prevention fence according to the present invention. The elastic member 7 shown in Figure 17 differs from the elastic member 7 shown in Figure 7 in that the engagement receiving portions that can engage with the insertion portions 33 and engagement portions of the column bodies 3 shown in Figures 4 to 9 are formed as notch portions 72 rather than through holes. Each notch 72 shown in FIG. 17 penetrates the elastic member 7 in the front-to-rear direction and is formed with a size and arrangement that allows each insertion portion of the pillar to be inserted and engaged, and can be attached to the support in the same way as the elastic member 7 shown in FIG. Furthermore, the through holes provided in the elastic members 7C shown in FIG. 16 and serving as engagement receiving portions may be formed in a notch shape as shown in FIG.

[0036] Furthermore, the falling object prevention fence 1 shown in Figures 1 to 15 and the falling object prevention fence shown in Figure 16 have insertion portions formed in the column body 3 of the support or the fastening member 5C to be inserted into the through holes of the elastic member, but this is not limited to this and the insertion portions may also be formed in the plate clamping material of the support. [Explanation of symbols]

[0037] 1 Falling object prevention fence 2 pillars 3 pillars 31 Column section 32 Base 33 Insertion section 38 Mounting part 4 Board holder 41 Through hole 5 Fastening members 6 Panel board 61 Main Unit 62 Upper end 7 Elastic member 71 Through hole 8 Reinforcement N Nut material W Fall prevention wire

Claims

1. A fence comprising a post, a fastening member, a support post having a plate pressing member attached to the post by the fastening member, and a panel plate sandwiched between the plate pressing member and the post and attached to the support post, A falling object prevention fence characterized in that an elastic member is arranged between at least the panel board and either the board pressing material or the pillar body, and the engaging portion of the support is inserted into and engages with the engaging receiving portion formed on the elastic member.

2. 2. The falling object prevention fence according to claim 1, wherein the engagement receiving portion is a through hole formed in the elastic member, and the engagement portion of the support is inserted into and engaged with the through hole.

3. A falling object prevention fence as described in claim 1, characterized in that the elastic members are respectively arranged between the panel board and the support post and between the panel board and the board pressing member, and the engaging portion is inserted into each elastic member.

4. The falling object prevention fence according to claim 1, characterized in that the elastic member has a plurality of engagement receiving portions formed at intervals in the vertical direction, and the engagement portions are inserted into and engaged with each engagement receiving portion.

5. Two longitudinally arranged panel plates are attached to the support posts, A falling object prevention fence as described in any one of claims 1 to 12, characterized in that the elastic member is arranged so as to span each of the panel plates, and the engaging portion arranged between each of the panel plates is inserted into and engaged with the elastic member.

6. A falling object prevention fence as described in any one of claims 1 to 5, characterized in that the engagement portion is a convex portion formed on the pillar, the engagement portion has a female thread portion, and the plate retaining material is fixed to the pillar body by the fastening member that fastens to the female thread portion.

7. A fall prevention fence as described in any one of claims 1 to 5, characterized in that the engagement portion is composed of the fastening member, and the fastening member is inserted into and engaged with the engagement receiving portion of the elastic member.

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