JP3798470B2

JP3798470B2 - Underground structure

Info

Publication number: JP3798470B2
Application number: JP15079196A
Authority: JP
Inventors: 政小島; 登熊切
Original assignee: 旭テック株式会社
Priority date: 1996-06-12
Filing date: 1996-06-12
Publication date: 2006-07-19
Anticipated expiration: 2016-06-12
Also published as: JPH09329236A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、都市の道路沿いの地下に敷設される地下ケーブル等の接続部の真上地面を被装させる開閉蓋を備えた地下構造物や下水道のマンホールの開閉蓋を備えた地下構造物に関し、特に、傾斜した地面等に設置された開閉蓋の開閉操作時に、開閉蓋の暴走を防止するようにしたものに係る。
【０００２】
【従来の技術】
従来、都市の道路沿いの地下に敷設される地下ケーブル等の接続部の真上路面を被装させる開閉蓋を備えた地下構造物における開閉蓋の開閉移動や下水道のマンホールの開閉蓋の開閉移動等には、各種のリフト工具や移動装置が使用されている。
【０００３】
上記開閉蓋を備えた地下構造物において、最も馴染の深いものとして、例えば図１５に示すように、地下ケーブル等の接続部の真上地面を被装させる開閉蓋を備えた地下構造物の開閉蓋１やマンホールの開閉蓋１がある。この開閉蓋１を移動させるリフト工具としての移動装置１０は、矩形又は円盤形の開閉蓋１をテコの原理により引き上げるものである。その使用方法は、先ず、図１６に示すように、開閉蓋１の両隅に取付けた固定具３のアタッチメント５の先端に設けたノックピン７を押さえながら、２つの移動装置１０の本体孔１０Ｂを組付ける。続いて、図１７に示すように、移動装置１０の本体１０Ａを垂直に起こし、図１８のように大きな車輪１０Ｃを足で押さえながら手前へ順次に倒していく。これで、点線で示すように、開閉蓋１が持ち上げられる。そして、図１９に示すように、２つの移動装置１０に４つの車輪１０Ｃ，１０Ｄで開閉蓋１を移動可能に載せ、図示方向へ移動させる。また、開閉蓋１を閉じる場合は、逆の手順により行われる。
【０００４】
【発明が解決しようとする課題】
上記開閉蓋１を移動させる移動装置１０においては、開閉蓋１を移動させる操作手順が煩雑であるため操作に熟練を要するし、水平姿勢を維持させた状態での操作が困難である。これが傾斜地に埋設された開閉蓋１にあっては、開閉蓋の開閉操作時に、路面の勾配により開閉蓋を暴走させてしまう危険性が高く、非常に扱い難いという問題がある。
【０００５】
本発明は上記問題点に鑑み、傾斜した地面等に埋設された開閉蓋の開閉操作時に、開閉蓋の暴走を防止するようにした移動装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するべく、本発明の請求項１の地下構造物は、地面に開口された孔の開口部上部に設けられた枠体と、その枠体と分離可能で、かつ前記開口部を閉塞するように前記枠体に載置された開閉蓋と、少なくとも開閉蓋の下端に当接させ開閉蓋を水平移動させる案内面をもった案内部材を地面位置と一致するまで上昇させることが可能な昇降装置と、を有する地下構造物であって、前記開閉蓋の開口移動方向末端側にこれを枠体又は他の開閉蓋に係止可能でかつ該位置から退去自在に形成された突出片を設けたことを特徴とするものである。
【０００７】
本発明の請求項１によると、開閉蓋の開口移動に際して、枠体内に閉塞載置した開閉蓋を昇降手段により路面と同一レベルまで上昇させた状態で水平移動して開口又は閉口する。上記開閉蓋の開口移動方向末端側に突出片を設けているから、上記開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋の開口完了と同時に突出片が枠体に当接してその移動を規制する。これにより、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する。また、突出片を退去自在に形成したことにより、突出片を開閉蓋の下面に対して突出状態又は没入状態に位置規制可能としたから、不要なときは没入状態とすることで、開閉蓋を持ち上げなくても枠体から外すことができ、突出片を地面に接触させることなく自由に移動できる。
【０００８】
また、本発明の請求項２の地下構造物は、地面に開口された孔の開口部上部に設けられた枠体と、その枠体と分離可能で、かつ前記開口部を閉塞するように前記枠体に載置された開閉蓋と、少なくとも開閉蓋の下端に当接させ開閉蓋を水平移動させる案内面をもった案内部材を地面位置と一致するまで上昇させることが可能な昇降装置と、を有する地下構造物であって、前記枠体の開閉蓋開口移動方向側に、前記開閉蓋に係止可能でかつ開閉蓋の開口移動方向を軸方向として回動し該位置から退去自在に形成された突出片を設けたことを特徴とするものである。
【０００９】
本発明の請求項２によると、開閉蓋の開口移動に際して、枠体内に閉塞載置した開閉蓋を昇降手段により路面と同一レベルまで上昇させた状態で水平移動して開口又は閉口する。上記枠体の開閉蓋開口移動方向側に突出片を設けているから、上記開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋の開口完了と同時に突出片が開閉蓋に当接してその移動を規制する。これにより、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する。また、突出片を開閉蓋の開口移動方向を軸方向として回動させることにより該位置から退去自在に形成したことにより、いずれの方向の傾斜に対しても開閉蓋の開口移動を確実に規制することができる。
【００１０】
また、本発明の請求項３の地下構造物は、地面に開口された孔の開口部上部に設けられた枠体と、その枠体と分離可能で、かつ前記開口部を閉塞するように前記枠体に載置された開閉蓋と、少なくとも開閉蓋の下端に当接させ開閉蓋を水平移動させる案内面をもった案内部材を地面位置と一致するまで上昇させることが可能な昇降装置と、を有する地下構造物であって、上記案内部材の案内面に開閉蓋案内方向に交差して配置されかつ該位置から退去自在に形成された突出片を設けたことを特徴とするものである。
【００１１】
本発明の請求項３によると、案内部材に該案内部材上から退去自在の突出片を設けているから、枠体内の昇降装置により上記開閉蓋を枠内での昇降移動時に、案内部材上に載る開閉蓋の不用意な移動を防いで安全な昇降移動を可能とする。また、開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する。
【００１２】
また、本発明の請求項４の地下構造物は、請求項３記載の地下構造物において、前記突出片は、前記案内部材の短手方向の片側に枢着するとともに、上記案内部材上を横断する停止状態と退去した非停止状態に位置決めされ、上記案内部材上に載る開閉蓋の下降時に非停止状態にある上記突出片を枠体が案内部材上に復帰させるようにしたことを特徴とするものである。
【００１３】
本発明の請求項４によると、開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する。また、枠体内の昇降手段により上記開閉蓋の上限からの降下時に、戻し忘れで非停止状態にある突出片を枠体が案内部材上に自動的に復帰させるから、上記案内部材上に載る開閉蓋の停止を確実に行い、開閉蓋の安全な昇降移動を可能とする。
【００１４】
【発明の実施の形態】
以下、本発明の実施形態を図について具体的に説明する。図１は本発明の第１実施形態である地下構造物１００を示す斜視図であり、図２は地下構造物の平面図である。図１，２は、例えば、電線共同溝（Ｃ．Ｃ．ＢＯＸ）３０として知られている地下ケーブル等の接続部２０の真上路面を被装させる開閉蓋を備えた地下構造物である。
【００１５】
上記電線共同溝（Ｃ．Ｃ．ＢＯＸ）３０は、都市の景観・美観を図るべく開発されたもので、路面Ｒの地下空間を利用して２以上の電線管理者の電線（光ファイバー、電力、通信線）を共同して収容する施設であって（ＣｏｍｍｕｎｉｔｙＣａｂｌｅＢｏｘ）と名付けられている。上記接続部２０を納めたＣ．Ｃ．ＢＯＸ３０は、Ｕ字溝等からなるコンクリートの枠体２５と、この上面に載せた鉄製枠体２７を塞ぐ開閉蓋１とからなり、内部空間Ｓには地中に埋設した多孔管２９，２９の各端が露出し、この内部空間Ｓに作業者が入ってメンテナンス作業を行う。このため、地下構造物１００は鉄製枠体２７の両隅にジャッキ等の昇降装置Ｊを配置している。
【００１６】
上記鉄製枠体２７は、例えば、２枚の開閉蓋１を被せる大きさを有するから、この内部に各々２組ずつ４個の昇降装置Ｊを設置している。この昇降装置Ｊは、案内部材となる上側基板１３及び下側基板１２と、これを繋ぐリンク１５，１７と、このリンク１５，１７を拡開・縮小させるネジ棒１９とからなる。そして、図１，２に示すように、一対の昇降装置Ｊの上側基板１３は、開閉蓋１の昇降及び移動時の案内部材として機能を有する。上記開閉蓋１の昇降動作は、この開閉蓋１にあけた穴１Ａと、この直下に配置した上側基板１３にあけた孔１３Ａを介してハンドルＨの下端をネジ棒１９と連結して回動することにより行われ、昇降装置Ｊが開閉蓋１を上昇移動させる。左右一対のガイドレール１３を路面Ｒの高さと一致させたところで、矢印（ａ）のように、地面Ｒ上に開閉蓋１をその下面の４つのローラ１Ｂを転がして開口移動させる。
【００１７】
上記開閉蓋１を地面Ｒ上へ開口移動するとき、鉄製枠体２７が傾斜角θの傾斜地に埋設されていると、地面Ｒ上に移動した開閉蓋１が地面Ｒ上の低い側へ下って暴走する危険な状態となる。本発明は、上記開閉蓋１の傾斜地での暴走を未然に防ぐ突出片４０を上記開閉蓋１の開口移動方向末端側に設けたものである。
【００１８】
続いて、上記突出片４０の詳細構成を、図１〜図６により説明する。上記開閉蓋１に対し、各開閉蓋１の末端の側壁１Ｅに、各々２つの突出片４０をその偏心位置にてボルトの支持軸４３とナット４５とにより枢着している。（図示は、図面中左側の開閉蓋１のみを示しているが、右側の開閉蓋１も同一構成である。）上記突出片４０は、振り子のように、自重で垂れ下げられ、各々側壁１Ｅに形成されたストップ部材４７によりこれ以上の時計方向への回動を拘束されている。また、係止ピン４９を突出片４０の適宜位置にあけた通孔４０Ａに水平姿勢に支持させ、大径部４９Ａを側壁１Ｅに面してあけた大径孔４０Ｂに係合させ、バネ５１の弾発力により側壁１Ｅに凹設した２つの凹部１Ｆ，１Ｇの何れか１つに挿入させるようになっている。また、突出片４０の切り替えは図６に示すように係止ピン４９を引き上げて回動させることにより行う。
【００１９】
そして、係止ピン４９の大径部４９Ａを側壁１Ｅの凹部１Ｆに挿入時は、突出片４０を図１，４，５のように、下方へ垂れ下げた姿勢に保持する。この状態が上記突出片を開閉蓋１の下面に対して突出状態に位置規制された状態で、図４，５に示すように、枠体２７の上縁２７Ａに突出片４０の下側が当接するようになり、開閉蓋１の必要以上の開口移動を規制する。
【００２０】
また、係止ピン４９の大径部４９Ａを側壁１Ｅの凹部１Ｇに挿入時は、図３に示すように、突出片４０を水平姿勢に保持する。この状態が、上記突出片を開閉蓋１の下面に対して没入状態に位置規制され、枠体２７の上縁２７Ａから突出片４０が退去した状態となり、左右２枚の開閉蓋１の開閉移動を自由に行えるようにしている。
【００２１】
本発明の第１実施形態の地下構造物１００は、上記のように構成され、以下のように作用する。開閉蓋１の開口移動に際して、図１に示すように、枠体内に閉塞載置した開閉蓋１を枠体２７内の昇降装置Ｊにより地面Ｒと同一レベルまで上昇させた状態で水平移動して開口動作させる。このとき、地面Ｒが傾斜角θだけ傾斜しているのであれば、上記開閉蓋１の開口移動方向末端側の側壁１Ｅに付設した２つの突出片４０を図１，４，５のように、下方へ垂れ下げた姿勢に保持する。これで、上記突出片を開閉蓋１の下面に対して突出状態に位置規制する。
【００２２】
上記状態にて、上記開閉蓋１を枠体２７に対し、開口移動するとき、開閉蓋１の全開口と同時に突出片４０が枠体２７に当接し、図１に示すように、その移動を拘束する。尚、傾斜の上側にある開閉蓋１を開口させる場合は、上記と同様の操作により突出片４０を下側の開閉蓋１の縁に当接し、その移動を拘束する。
【００２３】
他方、地面Ｒが水平な平坦地であれば、図３に示すように、係止ピン４９の大径部４９Ａを側壁１Ｅの凹部１Ｇに挿入させ、突出片４０を水平姿勢に保持する。この状態では、上記突出片４０が開閉蓋１の下面に対し、没入状態に位置規制され、枠体２７の上縁２７Ａから突出片４０が退去し、開閉蓋１の自由な移動ができる。勿論、この場合も図４，５に示すように、突出片４０を下方へ突出させ、左右の開閉蓋１のオーバーランを防止することもできる。尚、突出片４０が突出した状態で、その突出最下端位置がローラ１Ｂ（開閉蓋最下端位置）よりも下方にあるようにしておけば、開閉蓋１を開口後、路面Ｒの中に突出片４０を食い込ませることにより、開閉蓋の不用意な移動を規制することができる。
【００２４】
以上のように、本実施形態の地下構造物１００によると、開閉蓋１の開閉の操作時にオーバーランを防止するとともに、傾斜地での開閉蓋１の暴走事故を未然に防止する効果がある。また、突出片４０を開閉蓋の下面に対して突出状態又は没入状態に位置規制可能としたから、必要なときは上記のように機能させ、不要なときは没入状態として開閉蓋の開閉移動や地面上への自由な移動が可能となる効果がある。
【００２５】
次に、図７，８を参照して本発明の第２実施形態を説明する。本実施形態は、上記開閉蓋１の傾斜地での暴走を未然に防ぐ突出片５２を上記枠体２７の開閉蓋開口移動方向側に設けたものである。
【００２６】
続いて、上記突出片５２の詳細構成を、図８により説明する。上記枠体２７に対し、その開閉蓋開口移動方向側の側壁２７Ｅに、各々２つの突出片５２をその偏心位置にてボルトの支持軸４３とナット４５とにより枢着している。上記突出片５２は、上方に樹立させて開閉蓋１の側壁１Ｅに当接させた状態で、枠体２７に形成された図示しないストップ部材によりこれ以上の時計方向への回動を拘束されている。また、係止ピン４９を突出片５２の適宜位置にあけた通孔４０Ａに水平姿勢に支持させ、大径部４９Ａを側壁２７Ｅに面してあけた大径孔４０Ｂに係合させ、バネ５１の弾発力により側壁２７Ｅに凹設した２つの凹部２７Ｆ，２７Ｇの何れか１つに挿入させるようになっている。また、突出片５２の切り替えは係止ピン４９を引き上げて回動させることにより行う。
【００２７】
そして、係止ピン４９の大径部４９Ａを側壁２７Ｅの凹部２７Ｆに挿入時は、突出片５２を図８のように、上方へ樹立した姿勢に保持する。この状態が上記突出片５２を開閉蓋１に対して突出状態に位置規制された状態で、図７に示すように、開閉蓋１の側壁１Ｅに突出片５２の上側が当接するようになり、開閉蓋１の必要以上の開口移動を規制する。
【００２８】
また、係止ピン４９の大径部４９Ａを側壁２７Ｅの凹部２７Ｇに挿入時は、突出片５２を水平姿勢に保持する。この状態が、上記突出片５２を没入状態に位置規制された状態であり、開閉蓋１の側壁１Ｅから突出片５２が退去した状態となり、開閉蓋１の開閉移動を自由に行えるようにしている。尚、本実施形態の突出片５２は第１実施形態の突出片４０と、上下の位置と取り付け位置が異なるほかは同一構成であり、同一符号を付して説明を省略する。
【００２９】
本発明の第２実施形態の地下構造物１００は、上記のように構成され、地面Ｒが傾斜角θだけ傾斜している場合には、上記突出片５２を図７のように、上方へ樹立した姿勢に保持する。これで、上記突出片５２を開閉蓋１に当接し、その移動を拘束する。
【００３０】
他方、地面Ｒが水平な平坦地であれば、係止ピン４９の大径部４９Ａを側壁２７Ｅの凹部２７Ｇに挿入させ、突出片５２を水平姿勢に保持する。この状態では、上記突出片５２が没入状態に位置規制され、開閉蓋１の側壁１Ｅから突出片５２が退去し、開閉蓋１の自由な移動ができる。
【００３１】
以上のように、本実施形態の地下構造物１００によると、開閉蓋１の開閉の操作時にオーバーランを防止するとともに、傾斜地での開閉蓋１の暴走事故を未然に防止する効果がある。また、突出片５２を枠体に対して突出状態又は没入状態に位置規制可能としたから、必要なときは上記のように機能させ、不要なときは没入状態として開閉蓋の開閉移動や地面上への自由な移動が可能となる効果がある。
【００３２】
次に、図９〜図１４を参照して本発明の第３実施形態を説明する。即ち、上記昇降装置Ｊの案内部材たる上側基板１３に該上側基板上から退去自在の突出片６０を設けたものである。上記突出片６０は、そのボス部６０Ａを上記上側基板１３の短手方向の片側（枠体２７側）にピン６１で枢着するとともに、上記上側基板上を横断する停止状態と、２点鎖線で示すように外側へ回避した非停止状態とに位置決めされる。そして、上記突出片６０は上記上側基板上を横断する停止状態のとき、この上側基板上に支持する開閉蓋１のローラ１Ｂの転動を規制し、また、２点鎖線で示すように外側へ退去した非停止状態のとき、この上側基板上に支持する開閉蓋１のローラ１Ｂの転動を自由に行うことができる。
【００３３】
また、上記突出片６０は、図１０に示すように、そのボス部６０Ａを上記上側基板１３の短手方向の片側（枠体２７側）にピン６１で枢着するとともに、上記上側基板上を横断させる。そして、図１１の実線で示すように、外側へ退去した非停止状態で枠体２７の上縁２７Ａに突出片６０が載り、下方位置に設けた内壁面部２７Ｂに上側基板を下降させると、図１３に示すように、突出片６０は内壁面部２７Ｂに押されて、上側基板側へ回動し、非停止状態にある上記突出片６０を枠体の内壁面部２７Ｂにより上側基板１３上に回動復帰させるようになっている。
【００３４】
尚、上記突出４６０を上側基板１３上から退去自在とする構成は、上記のものに限られず、水平面内で回動するようにしても良いし、平行移動するスライド式としても良い。
【００３５】
本発明の第３実施形態の地下構造物１００は、上記のように構成され、以下のように作用する。開閉蓋１の開口移動に際して、図９に示すように、枠体内に閉塞載置した開閉蓋１を枠体２７内の昇降手段Ｊにより路面Ｒと同一レベルまで上昇させた状態で水平移動して開口動作させる。上記開閉蓋１の昇降移動時には、図１０，１４に示すように、上側基板１３上に突出片６０を横断して、ローラ１Ｂの移動を拘束しているから、傾斜角θのある傾斜地においても、上側基板上に載る開閉蓋１の不用意な移動を防止して安全な昇降移動を可能とする。
【００３６】
また、図１２に示すように、開閉蓋１を枠体２７に対して水平方向に開口移動するとき、突出片６０を一旦退去させて開閉蓋１の下側（前進側）のローラ１Ｂを通過させて移動させる。次いで、突出片６０を上側基板１３上に横断させる。これで、前進方向に対する上側（後側）のローラ１Ｂの転動を規制し、開閉蓋１のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止することができる。
【００３７】
また、枠体２７内の昇降装置Ｊにより、上記開閉蓋１の上限からの降下時に、図１３の２点鎖線で示すように、突出片６０の戻し忘れで非停止状態にある突出片６０は、突出する内壁面部２７Ｂに押されて、上側基板側へ回動復帰される。これにより、上記上側基板上に載る開閉蓋の停止を確実に行い、開閉蓋の安全な昇降移動を可能とする。
【００３８】
以上のように、開閉蓋１は傾斜角θのある傾斜地においても、上側基板上に載る開閉蓋１の不用意な移動を防いで安全に昇降移動する効果がある。そして、開閉蓋１を枠体２７に対して水平方向に開口移動するとき、開閉蓋１のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する効果がある。更に、開閉蓋１の枠体２７内への降下時に、非停止状態にある突出片６０は上側基板側へ回動復帰され、開閉蓋１の停止を確実に行なえる効果がある。
【００３９】
本発明は、上記実施形態に限定されることなく発明の要旨内において、設計変更を成し得ること勿論である。例えば、突出片４０と突出片６０とを複合して設けても良いし、一対の突出片４０，４０と一対の突出片６０，６０とをいずれも１つだけとしても良い。また、突出片４０と突出片５２は突出状態又は没入状態に位置規制可能とし、不要なときは没入状態として開閉蓋の開閉移動や地面上への自由な移動を可能としたが、突出状態に固定されていても良い。更に、上記開閉蓋１は、１枚構成であっても３枚以上の複数枚構成であっても良い。そして、電線共同溝（Ｃ．Ｃ．ＢＯＸ）以外の一般マンホール等の蓋にも適用できる。そして、上記突出片４０と６０は、回動式としたが、これを進退移動するスライド式としてもよい。また、昇降装置Ｊは上側基板１３が他の部分と一体のものを示したが、上側基板と昇降装置の他の部分が別体で構成されていて昇降操作により上側基板が持ち上げられるようにしても良い。また、昇降装置Ｊは枠体２７内に配置するものに限らず枠体の外部から開閉蓋を持ち上げる装置としても良い。
【００４０】
【発明の効果】
以上のように本発明の請求項１の地下構造物によると、上記開閉蓋の開口移動方向末端側に突出片を設けたから、上記開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋の開口と同時に突出片が枠体に当接してその移動を規制し、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する効果がある。
【００４１】
また、本発明の請求項２の地下構造物によると、枠体の開閉蓋開口移動方向側に突出片を設けたから、突出片を枠体に対して突出状態とすれば、上記開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋の開口完了と同時に突出片が開閉蓋に当接し、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する効果がある。
【００４２】
また、本発明の請求項３の地下構造物によると、昇降装置の案内部材に該案内部材上から退去自在の突出片を設けたから、案内部材上に載る開閉蓋の不用意な移動を防いで安全な昇降移動を可能とする。また、開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する効果が発揮される。
【００４３】
また、本発明の請求項４の地下構造物によると、上記案内部材の短手方向の片側に枢着する突出片は、上記案内部材上を横断する停止状態と退去した非停止状態に位置決めされるから、開閉蓋を枠体に対して水平方向に開口移動するとき、開閉蓋のオーバーランを防止するとともに、傾斜地での開閉蓋の暴走事故を未然に防止する効果がある。また、上記案内部材上に載る開閉蓋の下降時にアンロック状態にある上記突出片を枠体が案内部材上に自動復帰させるから、枠体内の昇降装置により上記開閉蓋の上限からの降下時に、戻し忘れても非停止状態にある突出片を枠体が案内部材上に自動復帰させ、上記案内部材上に載る開閉蓋の停止が確実に行える効果がある。
【図面の簡単な説明】
【図１】本発明の第１実施形態である開閉蓋の移動装置を示す斜視図である。
【図２】本発明の第１実施形態である開閉蓋の移動装置を示す平面図である。
【図３】本発明の第１実施形態の要部を示す正面図である。
【図４】本発明の第１実施形態の要部を示す正面図である。
【図５】本発明の第１実施形態の要部を示す断面図である。
【図６】本発明の第１実施形態の要部を示す断面図である。
【図７】本発明の第２実施形態である開閉蓋の移動装置を示す斜視図である。
【図８】本発明の第２実施形態の要部を示す断面図である。
【図９】本発明の第３実施形態である開閉蓋の移動装置を示す斜視図である。
【図１０】本発明の第３実施形態の要部を示す斜視図である。
【図１１】本発明の第３実施形態の要部の作用を示す断面図である。
【図１２】本発明の第３実施形態の要部の作用を示す断面図である。
【図１３】本発明の第３実施形態の要部の作用を示す断面図である。
【図１４】本発明の第３実施形態の要部の作用を示す正面図である。
【図１５】従来例の開閉蓋の移動装置を示す平面図である。
【図１６】従来例の開閉蓋の操作方法を示す部分斜視図である。
【図１７】従来例の開閉蓋の操作方法を示す部分正面図である。
【図１８】従来例の開閉蓋の操作方法を示す正面図である。
【図１９】従来例の開閉蓋の操作方法を示す正面図である。
【符号の説明】
１開閉蓋
１Ｂローラ
１Ｅ側壁
１３案内部材（上側基板）
２５コンクリートの枠体
２７鉄製枠体
２７Ａ上縁
２７Ｂ内壁面部
３０電線共同溝
４０，５２，６０突出片
４３支持軸
４５ナット
４７ストップ部材
４９係止ピン
５１バネ
Ｊ昇降装置
Ｒ路面
Ｓ内部空間
θ傾斜角
１００地下構造物[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, an underground structure having an open / close lid for covering a ground directly above a connection portion such as an underground cable laid in a basement along a city road, or an open / close lid of a sewer manhole. In particular, the present invention relates to an object that prevents the open / close lid from running away during an opening / closing operation of the open / close lid installed on an inclined ground or the like.
[0002]
[Prior art]
Conventionally, opening and closing movement of opening and closing lids and opening and closing movements of opening and closing lids of manholes in sewers in underground structures equipped with opening and closing lids that cover the road surface directly above the connection part of underground cables and the like laid underground in urban roads For example, various lift tools and moving devices are used.
[0003]
As shown in FIG. 15, for example, as shown in FIG. 15, the underground structure provided with the opening / closing lid is opened and closed as shown in FIG. There are a lid 1 and a manhole opening / closing lid 1. The moving device 10 as a lift tool for moving the opening / closing lid 1 pulls up the rectangular or disc-shaped opening / closing lid 1 by the lever principle. First, as shown in FIG. 16, while holding down the knock pin 7 provided at the tip of the attachment 5 of the fixture 3 attached to both corners of the opening / closing lid 1, the body holes 10B of the two moving devices 10 are opened. Assemble. Subsequently, as shown in FIG. 17, the main body 10A of the moving device 10 is raised vertically, and the large wheel 10C is sequentially pushed down toward the front while being pressed with a foot as shown in FIG. As a result, the open / close lid 1 is lifted as indicated by the dotted line. Then, as shown in FIG. 19, the opening / closing lid 1 is movably mounted on the two moving devices 10 by the four wheels 10 C and 10 D and moved in the illustrated direction. Moreover, when closing the opening / closing lid | cover 1, it is performed by the reverse procedure.
[0004]
[Problems to be solved by the invention]
In the moving device 10 for moving the opening / closing lid 1, the operation procedure for moving the opening / closing lid 1 is complicated, requiring skill in the operation, and operation in a state where the horizontal posture is maintained is difficult. In the opening / closing lid 1 embedded in an inclined ground, there is a high risk that the opening / closing lid may run away due to the gradient of the road surface when opening / closing the opening / closing lid, which is very difficult to handle.
[0005]
In view of the above problems, an object of the present invention is to provide a moving device that prevents a runaway of an opening / closing lid when the opening / closing operation of the opening / closing lid embedded in an inclined ground or the like is performed.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an underground structure according to claim 1 of the present invention includes a frame body provided at an upper portion of an opening portion of a hole opened in the ground, a separable frame body, and the opening portion. The opening / closing lid placed on the frame so as to be closed, and a guide member having a guide surface that abuts at least the lower end of the opening / closing lid and horizontally moves the opening / closing lid can be raised until it coincides with the ground position. a subterranean structure having a Do lifting device, wherein the frame it in the opening movement direction end side of the lid or other lockable in the lid and protruding pieces dismissed freely formed from the position Is provided.
[0007]
According to the first aspect of the present invention, when the opening / closing lid is moved, the opening / closing lid, which is closed in the frame body, is horizontally moved and opened or closed while being raised to the same level as the road surface by the lifting means. Since the projecting piece is provided at the end of the opening / closing lid in the opening movement direction, when the opening / closing lid is moved in the horizontal direction with respect to the frame, the projecting piece comes into contact with the frame simultaneously with the opening of the opening / closing lid. Restricting its movement. As a result, overrun of the opening / closing lid is prevented, and a runaway accident of the opening / closing lid on an inclined ground is prevented in advance. Also, by leave freely form protruding piece, since the protruding pieces to allow the position regulating the projecting state or retracted state to the lower surface of the lid, that when not needed and retracted state, the lid Even if it is not lifted, it can be removed from the frame, and the protruding piece can be moved freely without contacting the ground .
[0008]
Further, an underground structure according to claim 2 of the present invention is a frame provided at an upper part of an opening of a hole opened in the ground, and is separable from the frame and closes the opening. An elevating device capable of raising an opening / closing lid placed on the frame body and a guide member having a guide surface that contacts at least the lower end of the opening / closing lid and horizontally moves the opening / closing lid until it coincides with the ground position; An opening / closing lid opening movement direction side of the frame body, which is engageable with the opening / closing lid and is pivotable with the opening movement direction of the opening / closing lid as an axial direction so as to be retractable from the position. The above-mentioned protruding piece is provided.
[0009]
According to the second aspect of the present invention, when the opening / closing lid is moved, the opening / closing lid, which is closed and placed in the frame body, is horizontally moved and opened or closed while being raised to the same level as the road surface by the lifting means. Since the projecting piece is provided on the opening / closing lid opening direction side of the frame body, when the opening / closing lid is moved to open in the horizontal direction with respect to the frame body, the projecting piece contacts the opening / closing lid simultaneously with completion of opening of the opening / closing lid. The movement is controlled in contact. As a result, overrun of the opening / closing lid is prevented, and a runaway accident of the opening / closing lid on an inclined ground is prevented in advance. In addition, the projecting piece is formed so as to be retractable from the position by turning the opening movement direction of the opening / closing lid as an axial direction, thereby reliably restricting the opening movement of the opening / closing lid with respect to any inclination. Can
[0010]
According to a third aspect of the present invention, there is provided an underground structure according to a third aspect of the present invention, the frame provided at the upper part of the opening of the hole opened in the ground, the frame being separable and closing the opening. An elevating device capable of raising an opening / closing lid placed on the frame body and a guide member having a guide surface that contacts at least the lower end of the opening / closing lid and horizontally moves the opening / closing lid until it coincides with the ground position; The projecting member is provided with a projecting piece that is disposed on the guide surface of the guide member so as to cross the guide direction of the opening / closing lid and is formed so as to be able to retreat from the position.
[0011]
According to the third aspect of the present invention, since the guide member is provided with a protruding piece that can be retracted from the guide member, the opening / closing lid is moved up and down in the frame by the lifting device in the frame. Prevents inadvertent movement of the opening / closing lid, and enables safe up-down movement. Further, when the opening / closing lid is moved in the horizontal direction with respect to the frame body, overrun of the opening / closing lid is prevented and an accident of the opening / closing lid on a sloping ground is prevented.
[0012]
According to a fourth aspect of the present invention, there is provided the underground structure according to the third aspect, wherein the protruding piece is pivotally attached to one side of the guide member in the short direction and crosses the guide member. The frame is returned to the guide member in the non-stop state when the open / close lid placed on the guide member is lowered, and is positioned in the stopped state and the non-stop state in which the frame member is retracted. Is.
[0013]
According to the fourth aspect of the present invention, when the opening / closing lid is moved in the horizontal direction with respect to the frame body, the over-running of the opening / closing lid is prevented and an accident of the opening / closing lid on an inclined ground is prevented. In addition, when the elevating means in the frame lowers from the upper limit of the opening / closing lid, the projecting piece that has been forgotten to return and is in a non-stop state automatically returns to the guiding member on the guiding member. The lid is surely stopped and the lid can be moved up and down safely.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing an underground structure 100 according to the first embodiment of the present invention, and FIG. 2 is a plan view of the underground structure. 1 and 2 show an underground structure including an open / close lid that covers a road surface directly above a connecting portion 20 such as an underground cable known as an electric wire joint groove (CC Box) 30.
[0015]
The cable joint groove (CC Box) 30 has been developed for the purpose of urban landscape and aesthetics, and uses the underground space on the road surface R to connect two or more electric wire managers (optical fiber, electric power, It is a facility that jointly accommodates (communication lines) and is named (CommunityCableBox). C. containing the connecting portion 20 C. The BOX 30 includes a concrete frame body 25 formed of a U-shaped groove or the like, and an opening / closing lid 1 that closes an iron frame body 27 placed on the upper surface. In the internal space S, porous tubes 29 and 29 embedded in the ground are provided. Each end is exposed, and an operator enters the internal space S to perform maintenance work. For this reason, the underground structure 100 has lifting devices J such as jacks arranged at both corners of the iron frame 27.
[0016]
The iron frame 27 has a size that covers, for example, two opening / closing lids 1, and therefore, two sets of four lifting devices J are installed therein. The lifting device J includes an upper substrate 13 and a lower substrate 12 that serve as guide members, links 15 and 17 that connect them, and a screw rod 19 that expands and contracts the links 15 and 17. As shown in FIGS. 1 and 2, the upper substrate 13 of the pair of lifting devices J functions as a guide member when the opening / closing lid 1 is lifted and moved. The opening / closing operation of the opening / closing lid 1 is rotated by connecting the lower end of the handle H to the screw rod 19 through a hole 1A formed in the opening / closing lid 1 and a hole 13A formed in the upper substrate 13 disposed immediately below the opening / closing lid 1. The lifting / lowering device J moves the opening / closing lid 1 upward. When the pair of left and right guide rails 13 coincide with the height of the road surface R, as shown by the arrow (a), the opening / closing lid 1 is rolled on the ground R by rolling the four rollers 1B on the lower surface thereof.
[0017]
When the opening / closing lid 1 is moved to open on the ground R, if the iron frame 27 is embedded in an inclined ground having an inclination angle θ, the opening / closing lid 1 moved on the ground R goes down to a lower side on the ground R. It becomes a dangerous state to runaway. In the present invention, a protruding piece 40 for preventing the runaway of the opening / closing lid 1 on an inclined ground is provided on the end side of the opening / closing lid 1 in the opening movement direction.
[0018]
Next, the detailed configuration of the protruding piece 40 will be described with reference to FIGS. With respect to the opening / closing lid 1, two protruding pieces 40 are pivotally attached to the end side wall 1E of each opening / closing lid 1 by bolt support shafts 43 and nuts 45 at their eccentric positions. (The drawing shows only the left opening / closing lid 1 in the drawing, but the right opening / closing lid 1 has the same configuration.) The protruding pieces 40 are suspended by their own weights like pendulums, and each side wall 1E. Further stoppage of the clockwise rotation is constrained by the stop member 47 formed in the above. Further, the locking pin 49 is supported in a horizontal posture by a through hole 40A formed at an appropriate position of the protruding piece 40, and the large diameter portion 49A is engaged with the large diameter hole 40B opened facing the side wall 1E, and the spring 51 is engaged. It is made to insert in any one of the two recessed parts 1F and 1G recessedly provided in the side wall 1E by the elastic force. Further, the projecting piece 40 is switched by pulling up and rotating the locking pin 49 as shown in FIG.
[0019]
When the large-diameter portion 49A of the locking pin 49 is inserted into the concave portion 1F of the side wall 1E, the protruding piece 40 is held in a posture of hanging downward as shown in FIGS. In this state, with the protruding piece positioned in a protruding state with respect to the lower surface of the opening / closing lid 1, the lower side of the protruding piece 40 contacts the upper edge 27A of the frame 27 as shown in FIGS. Thus, the opening movement of the opening / closing lid 1 more than necessary is restricted.
[0020]
Further, when the large-diameter portion 49A of the locking pin 49 is inserted into the recess 1G of the side wall 1E, the protruding piece 40 is held in a horizontal posture as shown in FIG. In this state, the protruding piece is positioned so as to be immersed with respect to the lower surface of the opening / closing lid 1, and the protruding piece 40 is retracted from the upper edge 27 A of the frame body 27. Can be done freely.
[0021]
The underground structure 100 of 1st Embodiment of this invention is comprised as mentioned above, and acts as follows. When the opening / closing lid 1 is moved, as shown in FIG. 1, the opening / closing lid 1 closed and mounted in the frame body is moved horizontally while being raised to the same level as the ground R by the lifting device J in the frame body 27. Open the aperture. At this time, if the ground surface R is inclined by the inclination angle θ, the two protruding pieces 40 attached to the side wall 1E on the end side in the opening movement direction of the opening / closing lid 1 are as shown in FIGS. Hold in a downward-hanging position. Thus, the position of the protruding piece is restricted in a protruding state with respect to the lower surface of the opening / closing lid 1.
[0022]
In the above state, when the opening / closing lid 1 is moved with respect to the frame body 27, the projecting piece 40 comes into contact with the frame body 27 simultaneously with the entire opening of the opening / closing lid 1, and as shown in FIG. to bound. When opening the opening / closing lid 1 on the upper side of the slope, the protruding piece 40 is brought into contact with the edge of the lower opening / closing lid 1 by the same operation as described above, and the movement is restricted.
[0023]
On the other hand, if the ground surface R is horizontal and flat, as shown in FIG. 3, the large-diameter portion 49A of the locking pin 49 is inserted into the concave portion 1G of the side wall 1E, and the protruding piece 40 is held in a horizontal posture. In this state, the position of the protruding piece 40 with respect to the lower surface of the opening / closing lid 1 is restricted so that the protruding piece 40 is retracted from the upper edge 27A of the frame 27, and the opening / closing lid 1 can be freely moved. Of course, also in this case, as shown in FIGS. 4 and 5, the protruding piece 40 can be protruded downward to prevent overrun of the left and right opening / closing lids 1. If the projecting piece 40 is in a projecting state and the projecting lowermost position is located below the roller 1B (the lowermost position of the opening / closing lid), it projects into the road surface R after the opening / closing lid 1 is opened. By biting the piece 40, inadvertent movement of the opening / closing lid can be restricted.
[0024]
As described above, according to the underground structure 100 of the present embodiment, it is possible to prevent overrun when opening and closing the opening / closing lid 1 and to prevent a runaway accident of the opening / closing lid 1 on an inclined ground. Moreover, since the position of the protruding piece 40 can be regulated in the protruding state or the immersive state with respect to the lower surface of the opening / closing lid, the functioning as described above is performed when necessary, and the opening / closing movement of the opening / closing lid is set as the immersive state when unnecessary. This has the effect of allowing free movement on the ground.
[0025]
Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a protruding piece 52 for preventing the runaway of the opening / closing lid 1 on an inclined ground is provided on the opening / closing lid opening direction side of the frame 27.
[0026]
Next, the detailed configuration of the protruding piece 52 will be described with reference to FIG. Two protruding pieces 52 are pivotally attached to the frame body 27 by a bolt support shaft 43 and a nut 45 at the eccentric position on the side wall 27E on the opening / closing lid opening moving direction side. The protruding piece 52 is constrained from further clockwise rotation by a stop member (not shown) formed on the frame body 27 in a state where the protruding piece 52 is established upward and is in contact with the side wall 1E of the opening / closing lid 1. Yes. Further, the locking pin 49 is supported in a horizontal posture by a through-hole 40A formed at an appropriate position of the protruding piece 52, and the large-diameter portion 49A is engaged with the large-diameter hole 40B opened facing the side wall 27E. It is made to insert in any one of the two recessed parts 27F and 27G recessedly provided in the side wall 27E by the elastic force. The projecting piece 52 is switched by pulling up and rotating the locking pin 49.
[0027]
When the large-diameter portion 49A of the locking pin 49 is inserted into the concave portion 27F of the side wall 27E, the protruding piece 52 is held in an upwardly established posture as shown in FIG. In this state where the protruding piece 52 is positioned in a protruding state with respect to the opening / closing lid 1, the upper side of the protruding piece 52 comes into contact with the side wall 1E of the opening / closing lid 1, as shown in FIG. The opening movement of the opening / closing lid 1 is restricted more than necessary.
[0028]
Further, when the large-diameter portion 49A of the locking pin 49 is inserted into the concave portion 27G of the side wall 27E, the protruding piece 52 is held in a horizontal posture. This state is a state in which the position of the protruding piece 52 is regulated so as to be immersed, and the protruding piece 52 is retracted from the side wall 1E of the opening / closing lid 1 so that the opening / closing movement of the opening / closing lid 1 can be freely performed. . The protruding piece 52 of the present embodiment has the same configuration as the protruding piece 40 of the first embodiment except that the vertical position and the mounting position are different.
[0029]
The underground structure 100 according to the second embodiment of the present invention is configured as described above, and when the ground R is inclined by the inclination angle θ, the protruding piece 52 is established upward as shown in FIG. Hold the posture. Thus, the protruding piece 52 is brought into contact with the opening / closing lid 1 to restrain the movement thereof.
[0030]
On the other hand, if the ground surface R is horizontal and flat, the large-diameter portion 49A of the locking pin 49 is inserted into the concave portion 27G of the side wall 27E, and the protruding piece 52 is held in a horizontal posture. In this state, the position of the projecting piece 52 is restricted to the immersion state, the projecting piece 52 is retracted from the side wall 1E of the opening / closing lid 1, and the opening / closing lid 1 can be freely moved.
[0031]
As described above, according to the underground structure 100 of the present embodiment, it is possible to prevent overrun when opening and closing the opening / closing lid 1 and to prevent a runaway accident of the opening / closing lid 1 on an inclined ground. Further, since the position of the projecting piece 52 can be restricted to the projecting state or the immersive state with respect to the frame body, it functions as described above when necessary, and when it is unnecessary, the projecting piece 52 is placed in the immersive state so that the opening / closing movement of the opening / closing lid or There is an effect that free movement to is possible.
[0032]
Next, a third embodiment of the present invention will be described with reference to FIGS. That is, the upper substrate 13 that is a guide member of the lifting device J is provided with a protruding piece 60 that can be retracted from the upper substrate. The protruding piece 60 has a boss portion 60A pivotally attached to one side (the frame 27 side) of the upper substrate 13 with a pin 61, and is in a stopped state crossing the upper substrate, and a two-dot chain line. As shown by, the positioning is performed in the non-stop state avoided to the outside. When the protruding piece 60 is in a stopped state across the upper substrate, the protruding piece 60 restricts the rolling of the roller 1B of the opening / closing lid 1 supported on the upper substrate, and also outwards as indicated by a two-dot chain line. When in the non-stop state, the roller 1B of the opening / closing lid 1 supported on the upper substrate can freely roll.
[0033]
Further, as shown in FIG. 10, the protruding piece 60 pivots the boss portion 60 A on one side (the frame body 27 side) of the upper substrate 13 with a pin 61 and also on the upper substrate 13. Cross. Then, as shown by the solid line in FIG. 11, when the protruding piece 60 is placed on the upper edge 27A of the frame body 27 in the non-stop state withdrawn to the outside, the upper substrate is lowered to the inner wall surface portion 27B provided at the lower position. 13, the protruding piece 60 is pushed by the inner wall surface portion 27 B to rotate toward the upper substrate side, and the protruding piece 60 in a non-stop state is rotated onto the upper substrate 13 by the inner wall surface portion 27 B of the frame body. It comes to return.
[0034]
In addition, the structure which makes the said protrusion 460 removably removable on the upper board | substrate 13 is not restricted to the above thing, You may make it rotate in a horizontal surface, and it is good also as a slide type which moves in parallel.
[0035]
The underground structure 100 of 3rd Embodiment of this invention is comprised as mentioned above, and acts as follows. When the opening / closing lid 1 is moved, as shown in FIG. 9, the opening / closing lid 1 closed and mounted in the frame body is moved horizontally while being raised to the same level as the road surface R by the lifting means J in the frame body 27. Open the aperture. When the opening / closing lid 1 is moved up and down, as shown in FIGS. 10 and 14, the movement of the roller 1 B is constrained across the protruding piece 60 on the upper substrate 13. Thus, it is possible to prevent the open / close lid 1 placed on the upper substrate from being carelessly moved and to move up and down safely.
[0036]
Further, as shown in FIG. 12, when the opening / closing lid 1 is moved in the horizontal direction with respect to the frame body 27, the protruding piece 60 is once retracted and passed through the roller 1B on the lower side (forward side) of the opening / closing lid 1. To move. Next, the protruding piece 60 is traversed on the upper substrate 13. Thus, the rolling of the upper (rear) roller 1B with respect to the forward direction can be restricted, and the overrun of the open / close lid 1 can be prevented, and the runaway accident of the open / close lid on an inclined ground can be prevented.
[0037]
Further, as shown by a two-dot chain line in FIG. 13, when the lifting device J in the frame 27 is lowered from the upper limit of the opening / closing lid 1, the protruding piece 60 that is in a non-stop state due to forgetting to return the protruding piece 60 is Then, it is pushed by the projecting inner wall surface portion 27B, and returned to the upper substrate side. Thereby, the opening / closing lid placed on the upper substrate is reliably stopped, and the opening / closing lid can be safely moved up and down.
[0038]
As described above, the opening / closing lid 1 has an effect of safely moving up and down by preventing the opening / closing lid 1 placed on the upper substrate from being carelessly moved even on an inclined ground having an inclination angle θ. Then, when the opening / closing lid 1 is moved in the horizontal direction with respect to the frame body 27, the opening / closing lid 1 can be prevented from being overrun, and the opening / closing lid can be prevented from a runaway accident on an inclined ground. Further, when the opening / closing lid 1 is lowered into the frame 27, the projecting piece 60 in the non-stop state is returned to the upper substrate side, and there is an effect that the opening / closing lid 1 can be surely stopped.
[0039]
It goes without saying that the present invention is not limited to the above-described embodiment, and that design changes can be made within the gist of the invention. For example, the protruding piece 40 and the protruding piece 60 may be provided in combination, or the pair of protruding pieces 40 and 40 and the pair of protruding pieces 60 and 60 may be only one. The projecting piece 40 and the projecting piece 52 can be regulated in a projecting state or an immersive state. When not required, the projecting piece 40 and the projecting piece 52 can be opened and closed and moved freely on the ground. It may be fixed. Further, the opening / closing lid 1 may have a single-sheet configuration or a plurality of three-sheet configuration. And it is applicable also to lids, such as general manholes, other than an electric wire common groove (CC Box). And although the said protrusion pieces 40 and 60 were made into the rotation type, it is good also as a slide type which moves this back and forth. Moreover, although the upper board | substrate 13 showed the thing in which the upper board | substrate 13 was integrated with another part, the other parts of the upper board | substrate and the raising / lowering apparatus were comprised separately, and the upper board | substrate was lifted by raising / lowering operation. Also good. Further, the lifting device J is not limited to the one arranged in the frame body 27, and may be a device for lifting the opening / closing lid from the outside of the frame body.
[0040]
【The invention's effect】
As described above, according to the underground structure of claim 1 of the present invention, since the projecting piece is provided on the end side of the opening / closing lid in the opening movement direction, when the opening / closing lid moves in the horizontal direction with respect to the frame, Simultaneously with the opening of the opening / closing lid, the protruding piece abuts on the frame body and restricts the movement thereof, thereby preventing the opening / closing lid from overrun and preventing the opening / closing lid from running away on an inclined surface.
[0041]
Further, according to the underground structure of claim 2 of the present invention, since the projecting piece is provided on the opening / closing lid opening moving direction side of the frame body, the projecting piece is made to project with respect to the frame body. When the opening moves horizontally with respect to the body, the projecting piece comes into contact with the opening / closing lid as soon as the opening / closing of the opening / closing lid is completed, preventing overrun of the opening / closing lid and preventing the lid from running away on an inclined surface. There is an effect to.
[0042]
Further, according to the underground structure of claim 3 of the present invention, since the guide member of the lifting device is provided with a protruding piece that can be retracted from the guide member, the opening / closing lid placed on the guide member is prevented from being inadvertently moved. Enables safe up and down movement. In addition, when the opening / closing lid is moved in the horizontal direction with respect to the frame body, the opening / closing lid overrun can be prevented and the opening / closing lid can be prevented from being runaway on an inclined ground.
[0043]
According to the underground structure of claim 4 of the present invention, the projecting piece pivotally attached to one side in the short direction of the guide member is positioned in a stopped state that crosses over the guide member and in a non-stopped state that has left. Therefore, when the opening / closing lid is moved in the horizontal direction with respect to the frame body, the opening / closing lid is prevented from overrun, and the opening / closing lid can be prevented from being runaway on an inclined ground. In addition, since the frame body automatically returns the projecting piece in the unlocked state when the opening / closing lid placed on the guide member descends, the frame body automatically returns onto the guide member. Even if it is forgotten to return, the frame body automatically returns the protruding piece in the non-stop state onto the guide member, and there is an effect that the open / close lid placed on the guide member can be surely stopped.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an opening / closing lid moving apparatus according to a first embodiment of the present invention.
FIG. 2 is a plan view showing the opening / closing lid moving apparatus according to the first embodiment of the present invention.
FIG. 3 is a front view showing a main part of the first embodiment of the present invention.
FIG. 4 is a front view showing a main part of the first embodiment of the present invention.
FIG. 5 is a cross-sectional view showing the main part of the first embodiment of the present invention.
FIG. 6 is a cross-sectional view showing the main part of the first embodiment of the present invention.
FIG. 7 is a perspective view showing an opening / closing lid moving apparatus according to a second embodiment of the present invention.
FIG. 8 is a cross-sectional view showing a main part of a second embodiment of the present invention.
FIG. 9 is a perspective view showing an opening / closing lid moving apparatus according to a third embodiment of the present invention.
FIG. 10 is a perspective view showing a main part of a third embodiment of the present invention.
FIG. 11 is a cross-sectional view showing the operation of the main part of the third embodiment of the present invention.
FIG. 12 is a sectional view showing the operation of the main part of the third embodiment of the present invention.
FIG. 13 is a cross-sectional view showing the operation of the main part of the third embodiment of the present invention.
FIG. 14 is a front view showing the operation of the main part of the third embodiment of the present invention.
FIG. 15 is a plan view showing a conventional moving device for the opening / closing lid.
FIG. 16 is a partial perspective view showing a conventional method for operating the opening / closing lid.
FIG. 17 is a partial front view showing a method for operating the opening / closing lid of the conventional example.
FIG. 18 is a front view showing a conventional method for operating the opening / closing lid.
FIG. 19 is a front view showing a conventional method for operating the opening / closing lid.
[Explanation of symbols]
1 Opening / closing lid 1B roller 1E side wall 13 Guide member (upper substrate)
25 concrete frame 27 iron frame 27A upper edge 27B inner wall surface 30 wire joint groove 40, 52, 60 projecting piece 43 support shaft 45 nut 47 stop member 49 locking pin 51 spring J lifting device R road surface S internal space θ inclination Corner 100 underground structure

Claims

A frame provided at an upper part of an opening of a hole opened in the ground, an opening / closing lid separable from the frame and placed on the frame so as to close the opening, and at least an opening / closing lid An elevating device capable of raising a guide member having a guide surface that contacts the lower end of the door and horizontally moving the opening / closing lid until it coincides with the ground position , wherein the opening of the opening / closing lid An underground structure characterized in that a projecting piece that can be locked to a frame body or other opening / closing lid and formed so as to be retractable from the position is provided on the end side in the moving direction.

A frame provided at an upper part of an opening of a hole opened in the ground, an opening / closing lid separable from the frame and placed on the frame so as to close the opening, and at least an opening / closing lid An elevating device capable of raising a guide member having a guide surface that abuts the lower end of the door and horizontally moves the open / close lid until it coincides with the ground position, and opens and closes the frame body An underground structure characterized in that a projecting piece is provided on the lid opening movement direction side so as to be engageable with the opening / closing lid and to rotate about the opening movement direction of the opening / closing lid as an axial direction so as to be able to retreat from the position. object.

A frame provided at an upper part of an opening of a hole opened in the ground, an opening / closing lid separable from the frame and placed on the frame so as to close the opening, and at least an opening / closing lid An elevating device capable of raising a guide member having a guide surface that abuts the lower end of the door and horizontally moves the opening / closing lid until the guide member coincides with the ground position, and guides the guide member 1. An underground structure characterized in that a projecting piece is provided on a surface so as to intersect with an opening / closing lid guide direction and formed so as to be able to retreat from the position.

The underground structure according to claim 3, wherein the projecting piece is pivotally attached to one side of the guide member in a short direction, and is positioned in a stopped state that crosses over the guide member and in a non-stopped state that is retracted, An underground structure in which a frame body returns the projecting piece, which is in a non-stop state when the open / close lid placed on the guide member is lowered, onto the guide member.