JP4409107B2

JP4409107B2 - Snow fence

Info

Publication number: JP4409107B2
Application number: JP2001065727A
Authority: JP
Inventors: 茂男由良; 大輔秋山
Original assignee: Nippon Steel Metal Products Co Ltd
Current assignee: Nippon Steel Metal Products Co Ltd
Priority date: 2001-03-08
Filing date: 2001-03-08
Publication date: 2010-02-03
Anticipated expiration: 2021-03-08
Also published as: JP2002266320A

Description

【０００１】
【発明に属する技術分野】
この発明は、上下に並ぶ開閉可能な複数の防雪パネルを備えた防雪柵に関し、特に、防雪柵として機能させる必要の全くない季節に、視界を妨げない収納状態にすることが可能な防雪柵に関する。
【０００２】
【従来の技術】
降雪地方の高速道路等では、冬季の雪による視程障害対策として、道路の側部に防雪柵を設置するが、防雪機能を必要としない時に、道路を走行する車両からの視界を少しでも向上させるために、上下に並ぶ複数の防雪パネルを支柱に回転可能に取り付けて開閉可能にした構造の防雪柵が知られている。この場合、防雪パネルを垂直にした閉状態では防雪機能を果たし、防雪パネルを水平にした開状態では、防雪機能はなくなるが、水平な防雪パネル間に広い隙間が生じるため、視界を妨げることが少なく、見通しが良くなる。
【０００３】
しかし、防雪パネルを水平な開状態にしても、やはり視界を妨げており、車両の運転者にとって満足できるものではない。また、ランドマーク等の観光資源を有効に活用できないという問題もある。そこで、冬季以外の視程障害対策を全く必要としない季節には、防雪柵全体を収納できる構造とすることも行なわれる。
【０００４】
この種の収納式の従来の防雪柵として、上下に並べて支柱に取り付けた各防雪パネルを折り畳んで下方に収納した後、支柱を柵長手方向に倒して全体を収納する構造のもの（特開平９−１０５１１４号（従来例Ａと呼ぶ））、あるいは、支柱を柵長手方向に倒した時に上下の各防雪パネルどうしが互いに干渉しないようにし、支柱を防雪パネルを取り付けたまま柵長手方向に倒して、全体を収納する構造のもの（特開平１０−１０２４２７号（従来例Ｂと呼ぶ））等があるが、従来の防雪柵はいずれも、支柱を柵長手方向に倒して収納する構造である。
【０００５】
【発明が解決しようとする課題】
上記のように、支柱を柵長手方向に倒して防雪柵全体を収納するものは、構造が複雑となるばかりでなく、収納作業に多大の労力を必要とする。特に、油圧式等のシリンダ（従来例Ａの一実施例）やクレーン（従来例Ａの他の実施例）やウインチ（従来例Ｂ）等の動力が必要なので、収納作業もその準備作業もきわめて煩雑である。クレーンの使用には、費用が高くかかるだけでなく、道路規制が必要であり煩雑である。シリンダは、これを防雪柵の一部として設けた構造ではコストが高くなり、収納時にシリンダを取り付ける方式では、作業がきわめて煩雑である。ウインチを使用する方式では、重いウインチを運ぶ作業は重労働であり、高齢の作業者には困難である。また、これらの各方式では、種々の工具が必要であり、また、高所作業があるので梯子等も必要で、これらを忘れると作業ができない。
【０００６】
本発明は上記従来の欠点を解消するためになされたもので、不使用時に防雪柵全体を収納できる構造として、走行車両からの視界を向上させることができるとともに、収納作業を動力を用いずに行なうことができ、しかも、収納作業を簡便にかつ軽作業でかつ能率的に行なうことができる防雪柵を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記課題を解決する本発明は、道路に沿って間隔をあけて設置された固定支柱と、隣接する固定支柱間に下部を柵長手方向と直交する面内で回転可能に軸支された柵本体と、前記柵本体を垂直な姿勢に係止する第１係止手段および下端が道路側に向いた略水平な姿勢に係止する第２係止手段とを備え、前記柵本体は、前記固定支柱に回転可能に軸支される左右の支柱部を持つフレームと、前記フレームの左右の支柱部間に回転可能に軸支された上下に並ぶ複数の防雪パネルと、各防雪パネルを同時に開閉駆動する防雪パネル開閉駆動機構とを備えたことを特徴とする。
【０００８】
請求項２は、請求項１の防雪柵における防雪パネル開閉駆動機構が、平行リンク機構を構成するように各防雪パネルに個別のピンを介して連結された、支柱部と平行な操作棒を有することを特徴とする。
【０００９】
請求項３は、請求項１の防雪柵が防護柵が道路側部に設置された道路における前記防護柵の外側に設けられる防雪柵であって、
前記柵本体が前記第２係止手段により水平な姿勢に係止された時に、柵本体部分の高さが防護柵の上端より低くなるように設定されたことを特徴とする。
【００１０】
請求項４は、請求項１または３の防雪柵が、固定支柱が盛土された道路の側部法面に設置されていることを特徴とする。
【００１１】
請求項５は、請求項１の防雪柵における、柵本体を垂直な姿勢で係止する第１係止手段および水平な姿勢に係止する第２係止手段が、固定支柱側にピンで係止する構成であることを特徴とする。
【００１２】
請求項６は、請求項１の防雪柵において、柵本体の下部に、柵本体の固定支柱への軸支部を中心とする回転方向のバランスを取るためのカウンターウエイトを取り付けたことを特徴とする。
【００１３】
請求項７は、請求項２の防雪柵の防雪パネルにおける支柱部への軸支部の位置を、防雪パネルの中央位置より防雪パネル開閉機構の操作棒と連結する連結ピン側にオフセットさせたことを特徴とする。
【００１４】
請求項８は、請求項１の防雪柵において、柵本体の左右の支柱部のそれぞれ外側面に、垂直な姿勢で隣接する柵本体間の隙間を塞ぐ邪魔板を取り付けたことを特徴とする。
【００１５】
請求項９は、請求項１または２の防雪柵において、柵本体を水平に倒した収納時に前記防雪パネルが垂直をなすことを特徴とする。
【００１６】
請求項１０は、請求項１の防雪柵において、柵本体の水平姿勢側の回転終端位置に、衝撃吸収部材を備えたストッパを設けたことを特徴とする。
【００１７】
請求項１１は、請求項１の防雪柵において、柵本体を回転させるためのコ字形の取っ手を柵本体の支柱部の下部に取り付けるとともに、この取っ手の長さを柵本体の支柱部の下端から回転軸までの距離の少なくとも半分以上の長さとしたことを特徴とする。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態を図１〜図９を参照して説明する。
図１は本発明の一実施形態の防雪柵１の１スパン部分についての正面図、図２は図１の右側面図、図３は図１の防雪柵１の収納状態の正面図、図４は図３の右側面図、図５は図１のＡ−Ａ断面図、図６は図５で防雪パネルを開いた状態の図である。この防雪柵１は、盛土された道路２の防護柵７より外側の法面３に設置されたもので、道路２に沿って間隔をあけて設置された固定支柱４に柵本体５を下部の回転軸６を介して柵長手方向と直交する面内で回転可能に取り付けた構成である。実施形態では、柵本体５を固定支柱４に回転可能に取り付ける回転軸６の位置を、柵本体５の下端から柵本体高さの約４分の１の位置としている。８は固定支柱４を固定する基礎である。
【００１９】
前記柵本体５は、図７にも示すように左右の支柱部１０の上端および中間位置どうしを横材１１で連結してフレーム１２を形成し、このフレーム１２の左右の支柱部１０間に、図５等に示すように上下に並べた６つの防雪パネル１５を回転軸１５ａを介して回転可能に取り付け、各防雪パネル１５を同時に開閉駆動する防雪パネル開閉駆動機構１６を備えている。柵本体５を固定支柱４に回転可能に取り付ける前述の回転軸６は、支柱部１０の外側面に固定している。この回転軸６を受ける固定支柱４側の軸支部を図８に２４で示す。この軸支部２４はＵ字形切り欠き２４ａを形成したプレート２４ｂをＨ形鋼である固定支柱４に固定し、切り欠き２４ａの上方に抜け止めピン２４ｃを取り付けた構成である。
【００２０】
前記防雪パネル１５は図９にも示すように、２山断面形状の成形板１５ｂの両端に側枠１５ｃを固定し、この側枠１５ｃの外側面に前述の回転軸１５ａを取り付けた構成である。
【００２１】
前記防雪パネル開閉機構１６は、図５、図６、図９（イ）にも示すように、平行リンク機構を構成するように各防雪パネル１５に個別のピン１８を介して連結された、支柱部１０と平行な操作棒１９を有する構成である。また、操作棒１９の下端部には操作棒１９を上下に操作するための取っ手１９ａを設けている。
図７において、符号２１は防雪パネル１５の回転軸１５ａを受ける軸支部である。この軸支部２１はＵ字形切り欠き２１ａを形成したプレート２１ｂを溝形鋼である支柱部１０に固定し、切り欠き２１ａの上方に抜け止めピン２１ｃを取り付けた構成である。
防雪パネル１５における回転軸１５ａの位置は図９（イ）にも示すように、防雪パネル開閉機構１６の操作棒１９と連結するピン１８側にオフセットしている。すなわち、図９（イ）においてＳ寸法を防雪パネル１５の高さ寸法Ｗの半分より小さくしている。
【００２２】
柵本体５の下部に、防雪パネル開閉駆動機構１６の操作棒１９を上昇限位置（防雪パネル１５の開状態）および下降限位置（閉状態）で係止させるためのブラケット２５を固定している。
【００２３】
また、柵本体５の前記ブラケット２５の上位に、柵本体５を水平な姿勢に係止するための、ピン穴２６ａをあけた係止部材２６を固定している。
一方、固定支柱４側に、図８に示すように、柵本体５を水平に倒した時に柵本体５の下端側を下面で受けるストッパ３５、および反対側を上面で受けるストッパ３６を固定している。また、固定支柱４側に、水平状態の柵本体５の前記係止部材２６と連結するための、ピン穴２７ａをあけた係止部材２７を固定している。
上記の係止部材２６、係止部材２７、ストッパ３５、ストッパ３６、係止ピン４０は、柵本体５を、下端が道路側を向いた略水平な姿勢に係止する第２係止手段４２を構成する。
なお、前記ストッパ３６の上面にゴム等の衝撃緩衝部材３７を設けている。
【００２４】
柵本体５の左右の支柱部１０の下端部に、柵本体５の回転軸６を中心とする回転方向のバランスを取るためのカウンターウエイト２８を固定している。このカウンターウエイト２８でバランスが取れているので、回転軸６が著しく下方に片寄っていても、柵本体５を小さな力で回転操作することができる。
このカウンターウエイト２８に、柵本体５を垂直な姿勢に係止するための、ピン穴２９ａをあけた係止部材２９を固定している。
一方、固定支柱４側に前記係止部材２９を係止するための、ピン穴３０ａをあけた係止部材３０を固定している。
柵本体５を垂直な姿勢とした時に、係止部材２９のピン穴２９ａと固定支柱４側の係止部材３０のピン穴３０ａとが一致し、両ピン穴２９ａ、３０ａに係止ピン３１を挿入して、柵本体５を垂直な姿勢に係止する。
上記の係止部材２９、係止部材３０、係止ピン３１は、柵本体５を、垂直な姿勢に係止する第１係止手段４１を構成する。
【００２５】
また、柵本体５の左右の支柱部１０の下部に、柵本体５を回転操作するためのコ字形の取っ手３３を取り付けている。この取っ手３３の長さは、支柱部１０の下端から回転軸６までの距離の少なくとも半分（２分の１）以上の長さとするとよい。実施形態では、支柱部１０の下端から回転軸６までの距離の４分の３以上の長さとしている。取っ手３３を長くすると、柵本体５を回転操作する時に、手で掴む位置を移動させることができるので、柵本体５の回転操作がし易くなる。
また、柵本体５の支柱部１０の両側の外側面に、垂直な姿勢で隣接する柵本体５間の隙間を塞ぐ邪魔板３８を固定している（図７等参照）。
この実施形態では、柵本体５を図４に示すように水平に倒した時に、柵本体５の部分が防護柵７の頂部（頂部の高さ位置を線ａで示す）より低くなるように設定している。
また、図４に示すように、柵本体５を水平にした時に、防雪パネル１５が垂直な姿勢を取るように設定している。
【００２６】
上記の防雪柵１の作用ないし操作要領について説明する。
冬季の雪による視程障害対策を施す必要がある時期には、図１、図２、図５等に示すように、柵本体５を垂直な姿勢にし、かつ、防雪パネル１５を垂直な姿勢にする。これにより、防雪柵１は防雪機能を有効に果たすことができる。
【００２７】
冬季であっても、晴天が続いている天候等のため防雪柵としての機能を働かせなくてもよい時は、下降限位置にある操作棒１９を、これを支柱部１０側のブラケット２５に係止しているピン４３を抜いて上げ、上昇限位置で操作棒１９の下側のピン穴１９ｃにピン４３を挿入してブラケット２５に係止すると、図６に示すように、各防雪パネル１５が水平な開状態となる。これにより、道路を走行する車両の運転者にとって、各防雪パネル１５間の隙間から防雪柵１の外側の景色を見ることができる。
【００２８】
冬季以外の全く視程障害対策を必要としない季節には、柵本体５を図３、図４に示すように収納する。
この場合、柵本体５の下部の取っ手３３を手で持ち、柵本体５側の係止部材２９と固定支柱４側の係止部材３０とを係合させているピン３１を抜き、柵本体５を回転軸６を中心として、ストッパ３５、３６に当たるまで反時計方向（図２の矢印（イ）方向）に回転させて、図４のような水平の姿勢とし、柵本体５側の係止部材２６と固定支柱４側の係止部材２７とを、両者のピン穴２６ａ、ピン穴２７ａに挿入した係止ピン４０で、互いに係合させる。
この場合、柵本体５の下部にカウンターウエイト２８を設けているので、柵本体５の回転軸６の位置が大幅に下端側に偏っていても、柵本体５の回転軸６を中心とする回転方向のバランスが取れており、小さな力で柵本体５を回転操作することができる。なお、突風等で柵本体５が勢いよく倒れる場合には、固定支柱４側に設けたストッパ３６の衝撃吸収部材３７がその衝撃を吸収する。
また、ピン３１を抜き、柵本体５を回転させ、水平な姿勢でピン４０を挿入するというきわめて簡単な操作で、柵本体５を倒すことができるので、柵本体５の収納作業をきわめて簡単かつ能率的に行なうことができる。
また、柵本体５の回転軸６が下部にあり、下部の取っ手３３の操作で柵本体５を水平にすることができ、低い箇所の操作のみで済み、高所作業は不要である。したがって、梯子を必要とすることもなく、作業性が良好である。
また、工具等を必要としないので、作業性がよいとともに、工具を忘れて作業ができない等の問題も生じない。
また、ウインチやシリンダやクレーン等の動力が不要であり、この点でも収納作業が簡便であり、作業性がよい。また、ウインチを運搬する等の重労働がなく、この点でも作業性がよい。
【００２９】
次に、図３、図４の水平な収納状態から図１、図２、図５等の垂直な使用状態にする場合、柵本体５の取っ手３３を手で持ち、係止部材２７と係止部材２６とを連結しているピン４０を抜いて、柵本体５を図４で矢印（ロ）の時計方向に回転させて、垂直の姿勢とし、柵本体５側の係止部材２９のピン穴２９ａと固定支柱４４側の係止部材３０のピン穴３０ａとを合わせ、ピン３１を挿入して、両者を係合させる。
次いで、操作棒１９を下降限位置まで下げ、ブラケット２５の上側のピン穴２５ａにピン４３を挿入して係止すると、防雪パネル１５が垂直な閉状態となり、防雪機能を果たす使用状態となる。この操作において、防雪パネル１５の回転軸１５ａが操作棒１９と連結するピン１８側にオフセットしているので、防雪パネル１５の回転軸１５ｃを中心とする回転方向のバランスが取れており、防雪パネル１５を開閉する操作棒１９の操作を小さな力で行なうことができる。
上記の使用状態にする操作も、柵本体５を収納する場合と同じく、きわめて簡便かつ軽作業かつ能率的である。
【００３０】
この実施形態では、柵本体５を水平に倒した時の、柵本体５部分の高さが防護柵７の頂部より低いので、道路を走行する車両の運転者にとって、視野を妨げることは全くない。このことは、防雪柵１が道路側部の法面３に設置されていることで可能となっている。
【００３１】
なお、柵本体５の構成は、実施形態のものに限らず、適宜設計変更可能である。要するに、左右の支柱部１０を持つフレーム１２に回転可能に軸支された上下に並ぶ複数の防雪パネル１５を備え、各防雪パネル１５を同時に開閉駆動する防雪パネル開閉駆動機構１６とを備えた構成を有し、そして、固定支柱４に回転軸６を中心として回転可能に取り付けられた構成であればよい。
また、防雪パネル１５も実施形態のものに限らず、適宜設変更することができる。
また、柵本体５を垂直な姿勢に係止する第１係止手段４１および下端が道路側に向いた略水平な姿勢に係止する第２係止手段４２も、実施形態のピンによる機構に限らず、適宜設計変更可能である。
また、各防雪パネル１５を同時に開閉駆動する防雪パネル開閉駆動機構１６も、実施形態のものに限らず、種々設計変更可能である。
【００３２】
また、実施形態では防雪柵を道路側部の法面３に設置したが、必ずしもこれに限定されない。
また、本発明の防雪柵は、直接的な作用は防風作用であるから、防風のために設置することを除外しない。
【００３３】
【発明の効果】
本発明によれば、柵本体を水平に倒すだけで収納状態にすることができるので、収納作業がきわめて簡便かつ能率的である。
また、柵本体の下部を固定支柱に回転可能に取り付けた構成としているので、柵本体の下方部分を操作するだけで回転操作ができるようになっており、高所作業が不要となるだけでなく、良好な作業性を実現できる。この場合、請求項６のように柵本体の下部にカウンターウエイトを取り付けることで、柵本体の回転軸位置を下部に片寄らせたことに伴う回転モーメントのアンバランスを解消でき、柵本体の回転操作の作業性向上が実現される。
【００３４】
また、工具等を必要とせず、高所作業用の梯子等を用意することも不要なので、作業性がよいとともに、これらを忘れて作業ができない等の問題も生じない。
また、ウインチやシリンダやクレーン等の動力が不要であり、この点でも収納作業が簡便であり、作業性がよい。また、ウインチを運搬する等の重労働がなく、この点でも作業性がよい。
【００３５】
請求項２のように、防雪パネル開閉駆動機構として、平行リンク機構を構成する操作棒を用いると、防雪パネルの開閉自体が容易であると同時に、柵本体を倒して収納状態とする本発明の機構にとってきわめて適切である。
請求項３のように、収納状態の防雪柵の柵本体部分の高さを防護柵の上端より低くすると、収納状態の防雪柵は走行車両から見えず、防雪柵は走行車両からの視界を全く妨げなくなる。
請求項４のように、盛土された道路の側部法面に設置すると、柵本体を水平に倒した収納状態での高さを低くして、走行車両から見えないようにすることが容易である。
請求項５によれば、ピンの抜き差しで柵本体を垂直な姿勢または水平な姿勢に係止することができるので、柵本体の操作の作業性が向上するとともに、工具が不要となるので、この点でも作業性が向上する。
請求項６によれば、柵本体の下部に設けたカウンターウエイトにより、柵本体の回転方向のバランスが取れるので、柵本体を小さな力で回転操作することができ、作業に要する力が軽減される。
請求項７によれば、防雪パネルにおける回転軸の位置をオフセットさせたので、小さな力で防雪パネルを開閉することができ、作業性がよくなる。
請求項８によれば、柵本体の左右の支柱部のそれぞれ外側面に邪魔板を取り付けたので、固定支柱の上方に生じる隙間が邪魔板で塞がれ、外観が向上する。
請求項９によれば、柵本体を水平に倒した収納時に前記防雪パネルが垂直をなすので、防雪パネルに塵埃が堆積することは少なく、また、防雪パネルの軸支部に無理な力がかかることもない。
請求項１０によれば、柵本体の水平姿勢側の回転終端位置に、衝撃吸収部材を持つストッパを設けたので、柵本体を水平に倒す操作の際に、柵本体に衝撃が加わることを防止できる。
請求項１１によれば、柵本体を回転操作するための取っ手を長くしているので、柵本体を回転させる際に手で持つ位置を移動させることができ、柵本体を回転させる操作がし易くなる。
【図面の簡単な説明】
【図１】本発明の一実施形態の防雪柵の使用状態の正面図であり、１スパン部分のみを示す。
【図２】図１の右側面図である。
【図３】図１の防雪柵の収納状態の正面図である。
【図４】図３の右側面図である。
【図５】図１の拡大したＡ−Ａ断面図である。
【図６】図５において防雪パネルを水平な開状態とした図である。
【図７】上記防雪柵における、防雪パネルを除いた柵本体の斜視図である。
【図８】上記防雪柵における固定支柱の斜視図である。
【図９】（イ）は図５における防雪パネル部分の詳細拡大図、（ロ）は（イ）の左側面図（但し、防雪パネルの端部近傍のみを図示）である。
【符号の説明】
１防雪柵
２道路
３側部法面
４固定支柱
５柵本体
６回転軸
７防護柵
８基礎
１０支柱部
１１横材
１２フレーム
１５防雪パネル
１５ａ成形材
１５ｂ側枠
１５ｃ回転軸
１６防雪パネル開閉駆動機構
１８ピン
１９操作棒
１９ａ取っ手
１９ｂ、１９ｃピン穴
２１軸支部
２４軸支部
２５ブラケット
２６、２７、２９、３０係止部材
２６ａ、２７ａ、２９ａ、３０ａピン穴
２８カウンターウエイト
３３取っ手
３５、３６ストッパ
３７衝撃吸収部材
３８邪魔板
４０係止ピン
４１第１係止手段
４２第２係止手段
４３ピン[0001]
[Technical field belonging to the invention]
The present invention relates to a snow fence provided with a plurality of snow panels that can be opened and closed side by side, and more particularly to a snow fence that can be placed in a storage state that does not impede visibility in a season that does not need to function as a snow fence. .
[0002]
[Prior art]
On highways in snowfall areas, snow fences are installed on the side of the road as a countermeasure against visibility problems due to snow in winter, but when the snow protection function is not required, the visibility from vehicles traveling on the road is improved as much as possible. Therefore, there is known a snow fence having a structure in which a plurality of snow panels arranged vertically are rotatably attached to a support column so that the snow fence can be opened and closed. In this case, the snow protection panel is closed when the snow protection panel is vertical, and the snow protection function is lost when the snow protection panel is open, but the snow protection function is lost, but a wide gap is generated between the horizontal snow protection panels. Fewer and better prospects.
[0003]
However, even if the snow-proof panel is opened horizontally, the view is still hindered, which is not satisfactory for the vehicle driver. Another problem is that tourist resources such as landmarks cannot be used effectively. In view of this, a structure that can accommodate the entire snow fence is also made during the season when it is not necessary to take measures against visibility obstacles other than in winter.
[0004]
A conventional snow fence of this type is of a structure in which the snow panels arranged in the vertical direction and attached to the support are folded and stored downward, and then the support is tilted in the longitudinal direction of the fence to store the whole (Japanese Patent Laid-Open No. Hei 9). -105114 (referred to as Conventional Example A)), or when the support column is tilted in the longitudinal direction of the fence, make sure that the upper and lower snow protection panels do not interfere with each other and tilt the support column in the longitudinal direction of the fence with the snow protection panel attached. However, all of the conventional snow fences have a structure in which the support is tilted in the longitudinal direction of the fence to accommodate the entire structure (Japanese Patent Laid-Open No. 10-102427 (referred to as Conventional Example B)).
[0005]
[Problems to be solved by the invention]
As described above, the structure in which the support is tilted in the longitudinal direction of the fence to store the entire snow fence is not only complicated in structure but also requires a lot of labor for the storage work. In particular, since power such as a hydraulic cylinder (conventional example A), a crane (another example of conventional example A), a winch (conventional example B), etc. is required, the storing operation and the preparatory work are extremely difficult. It is complicated. The use of a crane is not only expensive, but also requires road regulations and is complicated. A cylinder having a structure in which the cylinder is provided as a part of the snow fence increases the cost, and the method in which the cylinder is attached at the time of storage is extremely complicated. In the method using a winch, the work of carrying a heavy winch is hard work and difficult for an elderly worker. Moreover, in each of these methods, various tools are necessary, and because there is a work at a high place, a ladder or the like is also necessary. If these are forgotten, the work cannot be performed.
[0006]
The present invention has been made to eliminate the above-mentioned conventional drawbacks, and as a structure that can store the entire snow fence when not in use, it can improve the field of view from the traveling vehicle, and storage operation without using power An object of the present invention is to provide a snow fence that can be carried out and that can be stored easily and lightly and efficiently.
[0007]
[Means for Solving the Problems]
The present invention that solves the above-mentioned problems is a fixed column that is installed at intervals along the road, and a fence body that is pivotally supported between adjacent fixed columns so that the lower part is rotatable in a plane perpendicular to the longitudinal direction of the fence. And a first locking means for locking the fence body in a vertical posture and a second locking means for locking the fence body in a substantially horizontal posture with the lower end facing the road side, the fence body is fixed A frame having left and right struts that are pivotally supported by the struts, a plurality of snow panels that are vertically supported between the left and right struts of the frame, and a snow drive panel that can be opened and closed simultaneously. And a snowproof panel opening / closing drive mechanism.
[0008]
According to a second aspect of the present invention, the snow prevention panel opening / closing drive mechanism in the snow fence according to the first aspect of the present invention has an operation bar that is connected to each of the snow prevention panels via individual pins so as to constitute a parallel link mechanism, and is parallel to the column portion. It is characterized by that.
[0009]
Claim 3 is a snow fence provided on the outside of the protective fence on the road where the protective fence is installed on the side of the road.
When the fence main body is locked in a horizontal posture by the second locking means, the height of the fence main body portion is set to be lower than the upper end of the protective fence.
[0010]
A fourth aspect of the present invention is characterized in that the snow fence according to the first or third aspect is installed on a side slope of a road on which a fixed support column is filled.
[0011]
According to a fifth aspect of the present invention, in the snow fence according to the first aspect, the first locking means for locking the fence main body in a vertical posture and the second locking means for locking in the horizontal posture are engaged by a pin on the fixed column side. It is the structure which stops.
[0012]
A sixth aspect of the present invention is the snow fence according to the first aspect, characterized in that a counterweight for balancing the rotation direction around the shaft support portion to the fixed support of the fence body is attached to the lower part of the fence body. .
[0013]
Claim 7 is that the position of the shaft support portion to the support column in the snow protection panel of the snow protection fence of claim 2 is offset from the center position of the snow protection panel to the connecting pin side connected to the operation bar of the snow protection panel opening / closing mechanism. Features.
[0014]
According to an eighth aspect of the present invention, in the snow fence according to the first aspect, baffle plates are attached to the outer side surfaces of the left and right support columns of the fence main body so as to close a gap between the adjacent fence main bodies in a vertical posture.
[0015]
According to a ninth aspect of the present invention, in the snow fence according to the first or second aspect, the snow protective panel is vertical during storage when the fence body is tilted horizontally.
[0016]
According to a tenth aspect of the present invention, in the snow fence according to the first aspect, a stopper provided with an impact absorbing member is provided at the rotation end position on the horizontal posture side of the fence main body.
[0017]
The eleventh aspect of the present invention is the snow fence according to the first aspect, wherein a U-shaped handle for rotating the fence body is attached to the lower part of the pillar part of the fence body, and the length of the handle is extended from the lower end of the pillar part of the fence body. The length is at least half the distance to the rotation axis.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
1 is a front view of one span portion of a snow fence 1 according to an embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a front view of the snow fence 1 of FIG. FIG. 5 is a right side view of FIG. 3, FIG. 5 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. The snow fence 1 is installed on the slope 3 outside the protective fence 7 of the embanked road 2, and the fence body 5 is attached to the lower portion of the fixed pillar 4 installed at intervals along the road 2. It is the structure attached rotatably through the rotating shaft 6 in the surface orthogonal to the fence longitudinal direction. In the embodiment, the position of the rotary shaft 6 that rotatably attaches the fence body 5 to the fixed column 4 is set to a position that is about a quarter of the height of the fence body from the lower end of the fence body 5. Reference numeral 8 denotes a foundation for fixing the fixed column 4.
[0019]
As shown in FIG. 7, the fence body 5 is formed by connecting the upper ends of the left and right support columns 10 and intermediate positions with a cross member 11 to form a frame 12, and between the left and right support columns 10 of the frame 12, As shown in FIG. 5 and the like, six snow panels 15 arranged vertically are rotatably attached via a rotating shaft 15a, and a snow panel open / close drive mechanism 16 that simultaneously opens and closes each snow panel 15 is provided. The rotating shaft 6 that rotatably attaches the fence body 5 to the fixed column 4 is fixed to the outer surface of the column 10. A shaft support portion on the side of the fixed column 4 that receives the rotating shaft 6 is shown by 24 in FIG. The shaft support 24 has a configuration in which a plate 24b on which a U-shaped cutout 24a is formed is fixed to a fixed support 4 made of H-shaped steel, and a retaining pin 24c is attached above the cutout 24a.
[0020]
As shown in FIG. 9, the snow-proof panel 15 has a configuration in which side frames 15c are fixed to both ends of a forming plate 15b having a two-sided cross section, and the rotary shaft 15a is attached to the outer surface of the side frame 15c. .
[0021]
As shown in FIGS. 5, 6, and 9 (A), the snow panel opening / closing mechanism 16 is a column that is connected to each snow panel 15 via individual pins 18 so as to form a parallel link mechanism. The operation bar 19 is parallel to the part 10. Further, a handle 19 a for operating the operation bar 19 up and down is provided at the lower end of the operation bar 19.
In FIG. 7, reference numeral 21 denotes a shaft support that receives the rotation shaft 15 a of the snow protection panel 15. The shaft support 21 has a structure in which a plate 21b on which a U-shaped cutout 21a is formed is fixed to a support column 10 made of channel steel, and a retaining pin 21c is attached above the cutout 21a.
The position of the rotating shaft 15a in the snow protection panel 15 is offset toward the pin 18 connected to the operation bar 19 of the snow protection panel opening / closing mechanism 16, as shown in FIG. That is, in FIG. 9A, the S dimension is set to be smaller than half of the height dimension W of the snow protection panel 15.
[0022]
A bracket 25 for locking the operation bar 19 of the snow protection panel opening / closing drive mechanism 16 at the ascending limit position (open state of the snow protection panel 15) and the descending limit position (closed state) is fixed to the lower part of the fence body 5. .
[0023]
In addition, a locking member 26 having a pin hole 26 a for locking the fence body 5 in a horizontal posture is fixed above the bracket 25 of the fence body 5.
On the other hand, as shown in FIG. 8, a stopper 35 that receives the lower end side of the fence body 5 on the lower surface and a stopper 36 that receives the opposite side on the upper surface when the fence body 5 is tilted horizontally is fixed to the fixed column 4 side. Yes. Further, a locking member 27 having a pin hole 27a for connecting to the locking member 26 of the horizontal fence body 5 is fixed to the fixed support 4 side.
The locking member 26, the locking member 27, the stopper 35, the stopper 36, and the locking pin 40 are the second locking means 42 that locks the fence body 5 in a substantially horizontal posture with the lower end facing the road side. Configure.
An impact buffer member 37 such as rubber is provided on the upper surface of the stopper 36.
[0024]
A counterweight 28 for balancing the rotation direction around the rotation axis 6 of the fence body 5 is fixed to the lower ends of the left and right support columns 10 of the fence body 5. Since the counterweight 28 is balanced, the fence main body 5 can be rotated with a small force even when the rotary shaft 6 is significantly deviated downward.
A locking member 29 having a pin hole 29a for locking the fence body 5 in a vertical posture is fixed to the counterweight 28.
On the other hand, a locking member 30 having a pin hole 30a for locking the locking member 29 on the fixed support 4 side is fixed.
When the fence body 5 is in a vertical posture, the pin hole 29a of the locking member 29 and the pin hole 30a of the locking member 30 on the fixed support 4 side coincide with each other, and the locking pin 31 is inserted into both the pin holes 29a and 30a. Insert and lock the fence body 5 in a vertical position.
The locking member 29, the locking member 30, and the locking pin 31 constitute the first locking means 41 that locks the fence body 5 in a vertical posture.
[0025]
In addition, a U-shaped handle 33 for rotating the fence body 5 is attached to the lower part of the left and right support columns 10 of the fence body 5. The length of the handle 33 is preferably at least half (1/2) or more of the distance from the lower end of the support column 10 to the rotating shaft 6. In the embodiment, the length is at least three quarters of the distance from the lower end of the support column 10 to the rotating shaft 6. When the handle 33 is lengthened, the position gripped by the hand can be moved when the fence body 5 is rotated, so that the fence body 5 can be easily rotated.
In addition, baffle plates 38 that block gaps between adjacent fence main bodies 5 in a vertical posture are fixed to the outer side surfaces of both sides of the support column 10 of the fence main body 5 (see FIG. 7 and the like).
In this embodiment, when the fence body 5 is tilted horizontally as shown in FIG. 4, the part of the fence body 5 is set to be lower than the top of the protective fence 7 (the height position of the top is indicated by a line a). is doing.
Moreover, as shown in FIG. 4, when the fence main body 5 is leveled, it sets so that the snow-proof panel 15 may take a vertical attitude | position.
[0026]
The operation or operation procedure of the snow fence 1 will be described.
When it is necessary to take measures against visibility disturbance due to snow in winter, as shown in FIGS. 1, 2, 5, etc., the fence body 5 is in a vertical posture and the snow-proof panel 15 is in a vertical posture. . Thereby, the snow fence 1 can fulfill | perform a snow protection function effectively.
[0027]
Even in the winter, when it is not necessary to operate the function as a snow fence due to the weather, etc., where the weather continues, the operating rod 19 at the lower limit position is engaged with the bracket 25 on the support column 10 side. When the pin 43 that has stopped is pulled out and raised, and the pin 43 is inserted into the pin hole 19c on the lower side of the operating rod 19 and locked to the bracket 25 at the ascending limit position, as shown in FIG. Becomes a horizontal open state. As a result, the driver of the vehicle traveling on the road can see the scenery outside the snow fence 1 from the gap between the snow panels 15.
[0028]
The fence body 5 is stored as shown in FIG. 3 and FIG. 4 in a season other than the winter season when no measures against visibility disturbance are required.
In this case, the handle 33 at the bottom of the fence body 5 is held by hand, the pin 31 that engages the locking member 29 on the fence body 5 side and the locking member 30 on the fixed column 4 side is pulled out, and the fence body 5 4 is rotated counterclockwise (in the direction of arrow (A) in FIG. 2) about the rotation shaft 6 until it hits the stoppers 35, 36, and the horizontal posture as shown in FIG. 26 and the locking member 27 on the fixed support 4 side are engaged with each other by the pin holes 26a and the locking pins 40 inserted into the pin holes 27a.
In this case, since the counterweight 28 is provided in the lower part of the fence body 5, even if the position of the rotation shaft 6 of the fence body 5 is greatly biased to the lower end side, the rotation around the rotation axis 6 of the fence body 5 is performed. The direction is balanced, and the fence body 5 can be rotated with a small force. When the fence body 5 falls down vigorously due to a gust of wind or the like, the impact absorbing member 37 of the stopper 36 provided on the fixed support 4 side absorbs the impact.
Further, since the fence body 5 can be tilted by a very simple operation of removing the pin 31, rotating the fence body 5 and inserting the pin 40 in a horizontal posture, the storage work of the fence body 5 is very simple and easy. It can be done efficiently.
Moreover, the rotating shaft 6 of the fence main body 5 is in the lower part, and the fence main body 5 can be leveled by the operation of the lower handle 33, so that only the operation at the low part is required, and the work at the high place is unnecessary. Therefore, workability is good without requiring a ladder.
In addition, since a tool or the like is not required, workability is good, and problems such as inability to work because the tool is forgotten do not occur.
Further, no power such as a winch, a cylinder, or a crane is required, and in this respect, the storing operation is simple and the workability is good. In addition, there is no heavy labor such as carrying a winch, and workability is also good in this respect.
[0029]
Next, when the horizontal storage state shown in FIGS. 3 and 4 is changed to the vertical use state shown in FIGS. 1, 2, 5, etc., the handle 33 of the fence body 5 is held by hand and locked to the locking member 27. The pin 40 connecting the member 26 is pulled out, the fence body 5 is rotated in the clockwise direction indicated by the arrow (b) in FIG. 4 to have a vertical posture, and the pin hole of the locking member 29 on the fence body 5 side. 29a and the pin hole 30a of the locking member 30 on the fixed support 44 side are aligned, the pin 31 is inserted, and both are engaged.
Next, when the operating rod 19 is lowered to the lower limit position, and the pin 43 is inserted into the pin hole 25a on the upper side of the bracket 25 and locked, the snow protection panel 15 is in a vertical closed state, and is in a use state in which the snow protection function is performed. In this operation, the rotation axis 15a of the snow protection panel 15 is offset to the pin 18 side connected to the operation rod 19, so that the rotation direction around the rotation axis 15c of the snow protection panel 15 is balanced, and the snow protection panel The operation rod 19 for opening and closing 15 can be operated with a small force.
The operation for making the use state described above is extremely simple, light work, and efficient, as in the case of storing the fence body 5.
[0030]
In this embodiment, since the height of the fence body 5 portion is lower than the top of the protective fence 7 when the fence body 5 is tilted horizontally, the field of view is not hindered at all for the driver of the vehicle traveling on the road. . This is possible because the snow fence 1 is installed on the slope 3 on the side of the road.
[0031]
In addition, the structure of the fence main body 5 is not limited to that of the embodiment, and the design can be changed as appropriate. In short, a configuration including a plurality of snow panels 15 vertically arranged on a frame 12 having left and right support columns 10 rotatably supported, and a snow panel opening / closing drive mechanism 16 that opens and closes each snow panel 15 simultaneously. And having a structure that is attached to the fixed support 4 so as to be rotatable about the rotation shaft 6.
Further, the snowproof panel 15 is not limited to that of the embodiment, and can be appropriately changed.
In addition, the first locking means 41 for locking the fence body 5 in a vertical posture and the second locking means 42 for locking the rail body 5 in a substantially horizontal posture with the lower end facing the road side are also included in the mechanism using the pins of the embodiment. The design can be changed as appropriate.
Also, the snow protection panel opening / closing drive mechanism 16 that opens and closes each snow protection panel 15 at the same time is not limited to the embodiment, and various design changes can be made.
[0032]
Moreover, although the snow fence was installed in the slope 3 of the road side part in embodiment, it is not necessarily limited to this.
Moreover, since the direct action of the snow fence according to the present invention is a wind prevention action, it does not exclude installation for wind prevention.
[0033]
【The invention's effect】
According to the present invention, since the fence body can be brought into the storage state only by being tilted horizontally, the storage work is extremely simple and efficient.
In addition, since the lower part of the fence body is rotatably attached to the fixed column, it can be rotated just by operating the lower part of the fence body. Good workability can be realized. In this case, by attaching a counterweight to the lower part of the fence body as in claim 6, the unbalance of the rotational moment caused by shifting the rotation axis position of the fence body to the lower part can be eliminated, and the rotation operation of the fence body is performed. Improvement of workability is realized.
[0034]
Further, since no tools or the like are required and it is not necessary to prepare a ladder or the like for working at high places, the workability is good, and problems such as inability to work because these are forgotten do not occur.
Further, no power such as a winch, a cylinder, or a crane is required, and in this respect, the storing operation is simple and the workability is good. In addition, there is no heavy labor such as carrying a winch, and workability is also good in this respect.
[0035]
As described in claim 2, when the operation rod constituting the parallel link mechanism is used as the snow protection panel opening / closing drive mechanism, the snow protection panel can be easily opened and closed at the same time, and at the same time, the fence body is brought into the stowed state. Very appropriate for the mechanism.
When the height of the fence body part of the snow fence in the storage state is lower than the upper end of the protection fence as in claim 3, the snow fence in the storage state is not visible from the traveling vehicle, and the snow fence has no visibility from the traveling vehicle. It will not interfere.
If it is installed on the side slope of the embanked road as in claim 4, it is easy to reduce the height in the stowed state in which the fence body is tilted horizontally so that it cannot be seen from the traveling vehicle. is there.
According to the fifth aspect, since the fence body can be locked in a vertical posture or a horizontal posture by inserting and removing the pins, the workability of the operation of the fence body is improved and a tool is not required. This also improves workability.
According to the sixth aspect, since the counterweight provided at the lower part of the fence body balances the rotation direction of the fence body, the fence body can be rotated with a small force, and the force required for the work is reduced. .
According to the seventh aspect, since the position of the rotating shaft in the snow protection panel is offset, the snow protection panel can be opened and closed with a small force, and workability is improved.
According to the eighth aspect, since the baffle plates are attached to the respective outer side surfaces of the left and right support columns of the fence body, the gap generated above the fixed support column is closed by the baffle plates, and the appearance is improved.
According to the ninth aspect, since the snow protection panel is vertical during storage when the fence body is tilted horizontally, dust is less likely to accumulate on the snow protection panel, and an excessive force is applied to the shaft support portion of the snow protection panel. Nor.
According to the tenth aspect, since the stopper having the shock absorbing member is provided at the rotation end position on the horizontal posture side of the fence body, it is possible to prevent an impact from being applied to the fence body during the operation of tilting the fence body horizontally. it can.
According to the eleventh aspect, since the handle for rotating the fence body is lengthened, the position held by the hand can be moved when rotating the fence body, and the operation for rotating the fence body is easy. Become.
[Brief description of the drawings]
FIG. 1 is a front view of a snow fence according to an embodiment of the present invention in use, showing only one span portion.
FIG. 2 is a right side view of FIG.
FIG. 3 is a front view of the snow fence shown in FIG. 1 in a stored state.
4 is a right side view of FIG. 3. FIG.
FIG. 5 is an enlarged cross-sectional view taken along the line AA in FIG.
6 is a view of the snowproof panel in FIG. 5 in a horizontal open state.
FIG. 7 is a perspective view of the fence body excluding the snow panel in the snow fence.
FIG. 8 is a perspective view of a fixed column in the snow fence.
9A is a detailed enlarged view of the snow-proof panel portion in FIG. 5, and FIG. 9B is a left side view of FIG. 5B (however, only the vicinity of the end of the snow-proof panel is shown).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Snow fence 2 Road 3 Side slope 4 Fixed support | pillar 5 Rail main body 6 Rotating shaft 7 Guard fence 8 Foundation 10 Supporting column 11 Cross member 12 Frame 15 Snowproof panel 15a Molding material 15b Side frame 15c Rotating shaft 16 Snowproof panel opening / closing drive mechanism 18 Pin 19 Operating rod 19a Handle 19b, 19c Pin hole 21 Shaft support 24 Shaft support 25 Bracket 26, 27, 29, 30 Locking members 26a, 27a, 29a, 30a Pin hole 28 Counterweight 33 Handle 35, 36 Stopper 37 Impact Absorbing member 38 Baffle plate 40 Locking pin 41 First locking means 42 Second locking means 43 Pin

Claims

Fixed pillars installed at intervals along the road, a fence body pivotally supported in a plane perpendicular to the longitudinal direction of the fence between adjacent fixed pillars, and the fence body in a vertical posture And a second locking means for locking in a substantially horizontal posture with the lower end facing the road side, and the fence body is pivotally supported by the fixed column. A frame having left and right support sections, a plurality of snow panels arranged vertically and rotatably supported between the left and right support sections of the frame, and a snow protection panel opening / closing drive mechanism for simultaneously opening and closing each snow protection panel Snow fence characterized by that.

2. The snow protection panel according to claim 1, wherein the snow protection panel opening / closing drive mechanism has an operation bar connected to each snow protection panel via an individual pin so as to constitute a parallel link mechanism and parallel to the support column. fence.

A snow fence provided outside the protective fence on the road where the protective fence is installed on the side of the road,
The height of a fence main-body part is set so that the height of a fence main-body part may become lower than the upper end of a protection fence, when the said fence main body is latched in the horizontal attitude | position by the said 2nd latching means. Snow fence.

The snow fence according to claim 1 or 3, wherein the fixed support is installed on a side slope of a road embanked.

The first locking means for locking the fence body in a vertical posture and the second locking means for locking in a horizontal posture are configured to be locked with a pin on the fixed column side. The snow fence according to 1.

2. The snow fence according to claim 1, wherein a counterweight for balancing the rotation direction centering on a shaft support portion to a fixed support of the fence body is attached to a lower portion of the fence body.

3. The snow fence according to claim 2, wherein the position of the shaft support portion to the support column in the snow protection panel is offset from the center position of the snow protection panel toward the connecting pin connected to the operation rod of the snow protection panel opening / closing mechanism.

The snow fence according to claim 1, wherein baffle plates are attached to the outer side surfaces of the left and right support columns of the fence body so as to close a gap between adjacent fence bodies in a vertical posture.

The snow fence according to claim 1 or 2, wherein the snow panel is vertical during storage when the fence body is tilted horizontally.

The snow fence according to claim 1, wherein a stopper having an impact absorbing member is provided at a rotation end position on a horizontal posture side of the fence body.

A U-shaped handle for rotating the fence body is attached to the lower part of the support column of the fence body, and the length of the handle is at least half the distance from the lower end of the support column to the rotation axis. The snow fence according to claim 1.