JP3580620B2 - Protective fence - Google Patents
Protective fence Download PDFInfo
- Publication number
- JP3580620B2 JP3580620B2 JP31622395A JP31622395A JP3580620B2 JP 3580620 B2 JP3580620 B2 JP 3580620B2 JP 31622395 A JP31622395 A JP 31622395A JP 31622395 A JP31622395 A JP 31622395A JP 3580620 B2 JP3580620 B2 JP 3580620B2
- Authority
- JP
- Japan
- Prior art keywords
- protective fence
- support
- column
- cross beam
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Description
【0001】
【発明が属する技術分野】
本発明は、中央分離帯に設置されるブロックアウト型の防護柵に関する。
【0002】
【従来技術】
ブロックアウト型の防護柵は、支柱に横向きに取付けられる防護柵の柵面が支柱よりも車道側に突出した構造となっており、防護柵の柵面が支柱前面と面一をなすか、或いは後退する非ブロックアウト型の防護柵と比べ、車両が支柱に衝突することによって生ずる車両の転倒、転落の事故がなく、また支柱の損傷もないことから中央分離帯に設置される防護柵にも採用されている。
【0003】
図1は、従来のこの種の防護柵について示すもので、支柱1が美観上、図2に示すように横断面でI形に構成されると共に、上方に向かって先細り状に、かつ下部を谷状に窄ませて形成してなるもので、支柱上には断面長円形のパイプよりなる主横梁2が、また両側にはパイプ状の下部横梁3がボルトにて止着され、支柱1の下部横梁3の取付部分は横梁3の形状に応じて円弧状に彎曲形成され、これに下部横梁3が嵌合して、その取付が堅固に安定して行われるようにしてある。
【0004】
【発明が解決しようとする課題】
図1に示すような従来の防護柵においては、支柱の横梁取付部が両側において窪み、厚みが狭くなっているため必要とする強度を確保するには、支柱の厚みを厚くしなければならず、重量が増すうえ、支柱が厚くなると、その分中央分離帯の巾も広くなり車道巾が狭くなる。
【0005】
本発明は、支柱の厚みを薄くすることができる中央分離帯用のブロックアウト型防護柵を提供することを目的とする。
【0006】
【課題の解決手段】
本発明の防護柵は、支柱と、支柱の左右両側に形成される嵌合凹部に嵌合して取着される横梁とよりなる中央分離帯用のブロックアウト型防護柵において、支柱両側の横梁取付け部の嵌合凹部を左右で上下方向に位置をずらして形成したことを特徴とする。
本発明の防護柵によれば、左右の嵌合凹部が上下にずれているため、同一高さにあるものよりも、嵌合凹部での厚みが増し、強度が増す。また横梁が上下にずれ、その分対向車のライトが遮られるため、遮光性が向上する。
【0007】
【発明の実施の形態】
図3は、本発明に係わる防護柵の一例を示すもので、支柱11の左右両側に上下方向に位置をずらして円弧状の嵌合凹部12を形成し、各嵌合凹部12に横梁13を嵌合してボルト14にて止着したもので、図示する例において、横梁13は断面円形のパイプ状をなしているが、楕円形、角形その他の形状をなしていてもよい。この場合、嵌合凹部もその断面が楕円形の一部或いは平溝状に形成される。
【0008】
図中15は、支柱上端にボルト16にて止着される断面長円の主横梁である。
【0009】
【発明の効果】
本発明の防護柵によれば、ブロックアウト型であるため、車両衝突時に車両が支柱に当たることによる車両の転倒、転落等の事故や、支柱の損傷を防ぐことができること、支柱両側の横梁が取付けられる嵌合凹部が上下に位置をずらして形成されることにより、従来の嵌合凹部が同じ高さにあるものよりも、支柱に必要な強度をもたせるための支柱の厚みを少なくすることができ、したがって重量が軽減されてコストが低下し、また中央分離帯の巾を狭くできるため、その分車道巾を広くできること、横梁が上下にずれているため、その分対向車のライトの遮光巾が増加し、遮光性が向上すること等の効果を有する。
【図面の簡単な説明】
【図1】従来の防護柵の側面図。
【図2】図1のA−A線断面図。
【図3】本発明に係わる防護柵の側面図。
【符号の説明】
11・・支柱 12・・嵌合凹部
13・・横梁 14、16・・ボルト
15・・主横梁[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a block-out type protective fence installed in a median strip.
[0002]
[Prior art]
The block-out type protective fence has a structure in which the fence surface of the protective fence mounted laterally on the support protrudes toward the roadway side from the support, and the fence surface of the protective fence is flush with the front of the support, or Compared to the non-block-out protective fences that recede, there is no accident of falling or falling of the vehicle caused by the collision of the vehicle with the pillars, and there is no damage to the pillars. Has been adopted.
[0003]
FIG. 1 shows this type of conventional protective fence, in which a column 1 is aesthetically configured to have an I-shape in cross section as shown in FIG. 2, and is tapered upward and lower. A main cross beam 2 made of a pipe having an elliptical cross section is fixed on the support by bolts, and a pipe-shaped
[0004]
[Problems to be solved by the invention]
In the conventional protective fence as shown in FIG. 1, the horizontal beam mounting portion of the column is depressed on both sides, and the thickness of the column is reduced because the thickness is reduced. As the weight increases and the columns become thicker, the width of the median strip increases and the width of the road decreases.
[0005]
An object of the present invention is to provide a block-out type protective fence for a median strip that can reduce the thickness of a column.
[0006]
[Means for solving the problem]
The protective fence of the present invention is a block-out type protective fence for a median strip comprising a column and a horizontal beam fitted and fitted in fitting recesses formed on both right and left sides of the column. The fitting concave portion of the mounting portion is formed by shifting the position in the vertical direction on the left and right.
According to the protection fence of the present invention, since the left and right fitting recesses are vertically displaced, the thickness at the fitting recess is increased and the strength is increased as compared with those at the same height. In addition, since the cross beams are shifted up and down, the lights of the oncoming vehicle are blocked correspondingly, so that the light blocking property is improved.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 3 shows an example of a protective fence according to the present invention. In each of the right and left sides of a
[0008]
In the figure,
[0009]
【The invention's effect】
According to the protective fence of the present invention, since it is a block-out type, it is possible to prevent accidents such as falling down of the vehicle and falling down due to the vehicle hitting the column at the time of vehicle collision, damage to the column, and mounting of the horizontal beams on both sides of the column. Since the fitting recesses formed are shifted vertically, it is possible to reduce the thickness of the pillar for providing the necessary strength to the pillar, compared to the conventional fitting recess having the same height. Therefore, the weight is reduced, the cost is reduced, and the width of the median strip can be narrowed, so that the width of the road can be widened accordingly. This has the effect of increasing the light-shielding properties.
[Brief description of the drawings]
FIG. 1 is a side view of a conventional protective fence.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a side view of the protective fence according to the present invention.
[Explanation of symbols]
11.
Claims (1)
分離帯用のブロックアウト型防護柵において、支柱両側の横梁取付け部の嵌合凹部を左右
で上下方向に位置をずらして形成したことを特徴とする防護柵。In a block-out type protective fence for a median strip consisting of a support and a cross beam fitted and attached to fitting recesses formed on the left and right sides of the support, the fitting recesses of the horizontal beam mounting portions on both sides of the support are provided. A protective fence formed by shifting the position in the vertical direction on the left and right.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31622395A JP3580620B2 (en) | 1995-12-05 | 1995-12-05 | Protective fence |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31622395A JP3580620B2 (en) | 1995-12-05 | 1995-12-05 | Protective fence |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09158137A JPH09158137A (en) | 1997-06-17 |
JP3580620B2 true JP3580620B2 (en) | 2004-10-27 |
Family
ID=18074682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31622395A Expired - Fee Related JP3580620B2 (en) | 1995-12-05 | 1995-12-05 | Protective fence |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3580620B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101831881A (en) * | 2010-04-22 | 2010-09-15 | 朱鹏超 | Elastic obstruction block of highway barrier |
CN102191755B (en) * | 2011-04-15 | 2012-12-19 | 蔡文学 | Guardrail device for highway |
-
1995
- 1995-12-05 JP JP31622395A patent/JP3580620B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH09158137A (en) | 1997-06-17 |
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