【０００１】
【発明の属する技術分野】
本発明は、並列する複数台の昇降車両支持台を順次吊り下げる昇降駆動用吊り索とその引き込み繰り出し装置とを備えた駐車設備に於いて使用される昇降制御装置に関するものである。
【０００２】
【従来の技術】
並列する複数台の昇降車両支持台を順次吊り下げる昇降駆動用吊り索とその引き込み繰り出し装置とを備えた駐車設備が知られている。この種の駐車設備では、並列する複数台の昇降車両支持台は択一的に昇降可能に切り換えられ、各昇降車両支持台を昇降駆動する吊り索の繰り出しにより、昇降可能に切り換えられている１台の昇降車両支持台のみが全昇降行程の下端レベルの下降限まで吊り下ろされ、他の昇降車両支持台は、全昇降行程の上端レベルでの下降限で受け止められることになり、前記吊り索の引き込みにより、昇降可能に切り換えられている１台の昇降車両支持台のみが全昇降行程の上端レベルの上昇限まで吊り上げられ、他の昇降車両支持台は、全昇降行程の下端レベルでの上昇限で受け止められることになる。
【０００３】
上記のようにこの種の駐車設備では、吊り索の繰り出しにより全ての昇降車両支持台が下降限（そのとき下降出来る行程での下降限）まで吊り下ろされ、吊り索の引き込みにより全ての昇降車両支持台が上昇限（そのとき上昇出来る行程での上昇限）まで吊り上げられるものであるが、前記吊り索に作用する張力は、当該吊り索の繰り出しにより下降する全ての昇降車両支持台が下降限に達したとき或いは下降途中の昇降車両支持台が何かに引っ掛かって下降が中断したときには、規定値より小さくなり、当該吊り索の引き込みにより昇降車両支持台を上昇させているときは、全ての昇降車両支持台が上昇限に達したとき或いは上昇途中の昇降車両支持台が何かに引っ掛かって上昇が中断したときには、規定値より大きくなる。従って、この吊り索に作用する張力を検出し、その検出結果に基づいて吊り索の引き込み繰り出し装置を制御することにより、全ての昇降車両支持台を下降限や上昇限で自動停止させたり、必要に応じて昇降途中で非常停止をかけることが出来る。
【０００４】
而して、この種の駐車設備の昇降制御装置は、特許文献１にも記載されるように、昇降車両支持台を昇降駆動する吊り索の張力を検出する吊り索張力検出装置によって、全ての昇降車両支持台が下降限に達したときに相当する低張力検出動作と、全ての昇降車両支持台が上昇限に達したときに相当する高張力検出動作とを行わせ、低張力検出動作に基づいて吊り索繰り出し動作を停止制御すると共に、高張力検出動作に基づいて吊り索引き込み動作を停止制御するように構成されていた。
【０００５】
【特許文献１】
特開２０００−２５７２９５公報
【０００６】
上記の従来の構成では、昇降車両支持台の下降限到着検出に関しては、全ての昇降車両支持台ごとに下降限検出用センサーを配設するよりも構成が簡単で制御も容易になり、実際の運転面でも問題点はないが、昇降車両支持台の上昇限到着検出に関しては問題点がある。即ち、吊り索張力検出装置は、昇降車両支持台に許容最大限の荷重（取り扱い可能な車両の最大車重＋最大積載荷重）が作用している状況を想定して設計されるので、昇降車両支持台の上昇限到着検出時には、実際に取り扱っている荷重の大きさに関係なく、常に許容最大限の荷重以上の負荷が吊り索に作用することになり、吊り索の耐用寿命が短くなる問題点がある。
【０００７】
又、昇降車両支持台が下側の入出庫レベルと上側支持レベルとの間で昇降するものであるときは、当該昇降車両支持台が入出庫レベルにあるときに車両が載せられ、次に他の昇降車両支持台に対する車両の積み下ろし作業を行うときまでは、安全対策上、入出庫レベルに置かれたままになるので、このような昇降車両支持台に対して、万一、許容最大荷重を超える重量オーバー車両が載せられたときは、次に他の昇降車両支持台に対する車両の積み下ろし作業を行うとき、即ち、重量オーバー車両が載せられた昇降車両支持台を上昇させるとき、に初めて吊り索張力検出装置が働き、当該昇降車両支持台が上昇限に達したときと同一の検出状態となって自動停止が働き、重量オーバー車両が載せられた昇降車両支持台を上昇させることが出来なくなり、このときには既に重量オーバー車両の運転者が現場に居ないために設備そのものが使用出来なくなってしまう。
【０００８】
又、昇降車両支持台が上側の入出庫レベルと下側支持レベルとの間で昇降するものであって、当該昇降車両支持台に対して、万一、許容最大荷重を超える重量オーバー車両が載せられたときは、直ちに当該重量オーバー車両が載せられた昇降車両支持台を下側支持レベルに吊り下ろす場合でも、当該昇降車両支持台が吊り索の繰り出しに伴って重力で下降することになるので、吊り索張力検出装置ではそのオーバー荷重が検出されず、次に当該重量オーバー車両を出庫するために昇降車両支持台を入出庫レベルまで吊り上げるときに先に説明したように吊り索張力検出装置が働き、自動停止がかかって動かない状況となり、やはり設備そのものが使用出来なくなってしまう。
【０００９】
【課題を解決するための手段】
本発明は上記のような従来の問題点を解消し得る駐車設備の昇降制御装置を提供することを目的とするものであって、その手段を後述する実施形態の参照符号を付して示すと、並列する複数台の昇降車両支持台１Ａ〜１Ｃを択一的に昇降可能にした駐車設備に於いて、前記複数台の昇降車両支持台１Ａ〜１Ｃを順次吊り下げる昇降駆動用吊り索６の引き込み繰り出し装置（巻き取りドラム７）と、全ての昇降車両支持台１Ａ〜１Ｃが下降限に達して吊り索６に昇降車両支持台１Ａ〜１Ｃ側の負荷が作用しなくなったときの当該吊り索６の張力を検出する吊り索張力検出装置９と、各昇降車両支持台１Ａ〜１Ｃが上昇限に達したことを個別に検出する複数の上昇限検出用センサーＳＡ〜ＳＣとを備え、前記吊り索張力検出装置９の検出動作に基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索繰り出し動作を停止制御し、前記複数の上昇限検出用センサーＳＡ〜ＳＣの内、少なくとも上昇操作対象の昇降車両支持台に対応する１つの上昇限検出用センサーが上昇限検出動作したことに基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作を停止制御する構成となっている。
【００１０】
上記構成の本発明を実施する場合、上昇限検出用センサーＳＡ〜ＳＣが上昇限検出動作した時点で直ちに前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作の停止制御を行わせるのではなく、上昇限検出用センサーＳＡ〜ＳＣが上昇限検出動作した時点から一定時間経過後に前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作の停止制御を行わせるように構成することが出来る。
【００１１】
又、前記昇降車両支持台１Ａ〜１Ｃが入出庫レベルＮとこれより上方の上側支持レベルＵとの間で昇降する駐車設備であるときは、各昇降車両支持台１Ａ〜１Ｃごとの前記上昇限検出用センサーＳＡ〜ＳＣは、各昇降車両支持台１Ａ〜１Ｃの上側支持レベルＵに於ける上昇限に達したことを検出するように配設し、これら全ての上昇限検出用センサーＳＡ〜ＳＣが上昇限検出動作したことに基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作を停止制御するように構成することが出来る。この場合、各昇降車両支持台１Ａ〜１Ｃごとの前記上昇限検出用センサーＳＡ〜ＳＣは、固定不フレーム側に配設するのが望ましい。
【００１２】
前記昇降車両支持台３０Ａ〜３０Ｃが入出庫レベルＮとこれより下方の下側支持レベルＤとの間で昇降する駐車設備であるときは、各昇降車両支持台３０Ａ〜３０Ｃごとの前記上昇限検出用センサーＳＡ〜ＳＣは、各昇降車両支持台３０Ａ〜３０Ｃに取り付けて、各昇降車両支持台３０Ａ〜３０Ｃが下側支持レベルＤに於ける上昇限に達したことと入出庫レベルＮに於ける上昇限に達したことを検出するように構成し、これら全ての上昇限検出用センサーＳＡ〜ＳＣが上昇限検出動作したことに基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作を停止制御するように構成することが出来る。
【００１３】
更に、前記昇降車両支持台３０Ａ〜３０Ｃが入出庫レベルＮとこれより下方の下側支持レベルＤとの間で昇降する駐車設備である場合、各昇降車両支持台３０Ａ〜３０Ｃごとの前記上昇限検出用センサーＳＡ〜ＳＣは、各昇降車両支持台３０Ａ〜３０Ｃが入出庫レベルＮに於ける上昇限に達したことを検出するように固定フレーム側に配設し、これら上昇限検出用センサーＳＡ〜ＳＣの内、上昇操作対象の昇降車両支持台に対応する１つの上昇限検出用センサーが上昇限検出動作したことに基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作を停止制御するように構成することも可能である。
【００１４】
何れの場合も、前記吊り索張力検出装置９は、全ての昇降車両支持台１Ａ〜１Ｃ，３０Ａ〜３０Ｃが上昇限に達した後の吊り索６の一定以上の過剰引き込み時に相当する異常過大張力も検出可能とし、当該異常過大張力検出動作に基づいて前記引き込み繰り出し装置（巻き取りドラム７）による吊り索引き込み動作を非常停止制御するように構成することが出来る。
【００１５】
【発明の実施の形態】
以下に本発明の好適実施形態を添付図に基づいて説明すると、図１Ａ及び図２に於いて、１Ａ〜１Ｃは並設された３台の昇降車両支持台であって、それぞれ固定フレーム側の昇降用ガイドレール兼用支柱２に案内されて上側支持レベルＵと入出庫レベル（下側支持レベル）Ｎとの間で昇降自在に支承されている。２Ａ，２Ｂは２台の自走可能な横行車両支持台であって、入出庫レベルＮに敷設された横行用ガイドレール３にそれぞれ車輪４を介して横行可能に支持されている。
【００１６】
５は昇降車両支持台１Ａ〜１Ｃの昇降駆動手段であって、吊り索６、この吊り索６の引き込み繰り出し手段としての巻き取りドラム７とドラム駆動用モーター８、及び吊り索張力検出装置９から構成されている。前記吊り索６は、一端が前記巻き取りドラム７に係止巻回されると共に他端が前記吊り索張力検出装置９に係止されたもので、その両端間で、各昇降車両支持台１Ａ〜１Ｃの後端部に軸支された被吊り下げ用回転案内輪１０ａ〜１０ｃと、この被吊り下げ用回転案内輪１０ａ〜１０ｃの真上に位置するように固定フレーム側に軸支された吊り下げ用回転案内輪（同軸２連）１１ａ〜１１ｃとを介して、各昇降車両支持台１Ａ〜１Ｃを順番に吊り下げている。この吊り索６の各被吊り下げ用回転案内輪１０ａ〜１０ｃ及び吊り下げ用回転案内輪１１ａ〜１１ｃに対する巻回方向は、巻き取りドラム７に対する巻回方向と同じ向きである。
【００１７】
而して、巻き取りドラム７を正転駆動して吊り索６を引き込むことにより、全ての昇降車両支持台１Ａ〜１Ｃが上側支持レベルＵまで吊り上げられ、固定フレーム側の上昇限ストッパー１２で制止される上昇限位置まで上昇する。又、巻き取りドラム７を逆転駆動して吊り索６を繰り出すことにより、重力で降下出来る状態にある昇降車両支持台１Ａ〜１Ｃは、吊り索６の繰り出しに伴って入出庫レベルＮまで吊り下ろされ、固定フレーム側や地表レベルの基礎スラブ上等の適当箇所に設けられた下降限ストッパー（図示例では、固定フレーム側に架設された横行車両支持台２Ａ，２Ｂの横行用ガイドレール３を利用）で制止される下降限位置まで下降する。
【００１８】
図示の実施形態では、昇降車両支持台１Ａ〜１Ｃの内、任意の１台を入出庫レベルＮへ下降可能な状態にする手段として、横行車両支持台２Ａ，２Ｂに設けた受け止め用フレーム１３ａ，１３ｂを使用している。即ち、各横行車両支持台２Ａ，２Ｂの後端部には、上側支持レベルＵにある昇降車両支持台１Ａ〜１Ｃを受け止めて上側支持レベルＵからの下降を阻止する受け止め用フレーム１３ａ，１３ｂが立設されている。この受け止め用フレーム１３ａ，１３ｂを使用した手段は一例であって、従って、上側支持レベルＵにあって、真下に横行車両支持台２Ａ，２Ｂが位置している下降不能な昇降車両支持台の下降限は、当該横行車両支持台２Ａ，２Ｂの受け止め用フレーム１３ａ，１３ｂで受け止められる位置となる。昇降車両支持台１Ａ〜１Ｃの内、任意の１台を入出庫レベルＮへ下降可能な状態にする手段としては、上記の受け止め用フレーム１３ａ，１３ｂに限定されず、如何なる構成のものであっても良い。
【００１９】
次に吊り索張力検出装置９の具体構造を説明すると、図１Ｂ及び図３に示すように、固定フレーム側への取付台１４上に立設された固定バネ受け座１５を貫通するロッド１６、このロッド１６の一端に同心状に連結された被検出用可動体１７、前記ロッド１６の他端に取り付けられたバネ受け座１８、前記ロッド１６に外嵌し且つ一端が前記固定バネ受け座１５に固着されたガイドスリーブ１９、このガイドスリーブ１８に遊嵌された負荷伝達部材２０、この負荷伝達部材２０と固定バネ受け座１５との間でガイドスリーブ１８に遊嵌された弱い圧縮コイルスプリング２１、この圧縮コイルスプリング２１の圧縮変形量を制限するために当該圧縮コイルスプリング２１に外嵌する状態で一端が前記固定バネ受け座１５に固着された円筒状のバネ変形制限部材２２、前記負荷伝達部材２０とロッド端部のバネ受け座１８との間でロッド１６に外嵌された強い圧縮コイルスプリング２３、及び前記被検出用可動体１７の位置の変化を検出するセンサーＳ１，Ｓ２から構成され、前記被検出用可動体１７に吊り索６の端末が結合されている。
【００２０】
従って吊り索６は、被検出用可動体１７、ロッド１６、及びバネ受け座１８を介して、同心状に直列する強弱２つの圧縮コイルスプリング２１，２３の圧縮反力を受けて緊張方向に付勢されることになるが、各スプリング２１，２３の強さ（バネ定数）は、次のように設定されている。即ち、図１Ａに示すように、全ての昇降車両支持台１Ａ〜１Ｃが下降限ストッパー（横行用ガイドレール３）と横行車両支持台２Ａ，２Ｂ上の受け止め用フレーム１３ａ，１３ｂで支持されていて、吊り索６に昇降車両支持台１Ａ〜１Ｃ側の荷重が作用していない状態では、図１Ｂ及び図３Ａに示すように、強い圧縮コイルスプリング２３が伸長限まで伸長した状態で、吊り索６が弱い圧縮コイルスプリング２１の伸長により緊張せしめられ、吊り索６に空の昇降車両支持台１台分の重量以上の荷重が作用したときは、図３Ｂに示すように強い圧縮コイルスプリング２３と負荷伝達部材２０とを介して弱い圧縮コイルスプリング２１が固定バネ受け座１５との間で圧縮され、当該弱い圧縮コイルスプリング２１が完全に圧縮される直前で負荷伝達部材２０がバネ変形制限部材２２に当接し、吊り索６に作用する昇降車両支持台１Ａ〜１Ｃ側の荷重が強い圧縮コイルスプリング２３で受け止められるように構成されている。
【００２１】
センサーＳ１，Ｓ２は、図１Ｂに示すように、固定バネ受け座１５に取り付けられて被検出用可動体１７の移動経路脇に位置する支持板２４に、被検出用可動体１７の移動方向に位置調整自在に取り付けられて、磁性体製の被検出用可動体１７と対面したときにＯＮ動作するものである。
【００２２】
而して、この実施形態に於けるセンサーＳ１は、図１Ａに示すように、全ての昇降車両支持台１Ａ〜１Ｃが下降限に達した状態、即ち、下降限ストッパー（横行用ガイドレール３）と横行車両支持台２Ａ，２Ｂ上の受け止め用フレーム１３ａ，１３ｂで支持された状態を検出する下降限検出用センサーであり、センサーＳ２は、全ての昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２で上昇を制止された状態から更に吊り索６を一定長さ引き込んだとき、即ち、全ての昇降車両支持台１Ａ〜１Ｃが上昇限に達した後の吊り索６の一定以上の過剰引き込み時に相当する異常過大張力を検出するセンサーである。
【００２３】
図１Ａ及び図２に示すように、固定フレーム側、例えば各上昇限ストッパー１２には、各昇降車両支持台１Ａ〜１Ｃごとに、これら各昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２に当接する上昇限位置まで上昇したことを検出する上昇限検出用センサーＳＡ〜ＳＣが取り付けられている。これら各センサーＳＡ〜ＳＣとしては、上昇限位置まで上昇した各昇降車両支持台１Ａ〜１Ｃによってアクチェーターが蹴られるリミットスイッチやタッチセンサー等の各種接触形センサーの他、各昇降車両支持台１Ａ〜１Ｃを無接触で検出する磁気近接スイッチ等の各種無接触形センサーが利用出来る。又、図１Ａに仮想線で示すように、配線上の問題がなければ、各昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２に当接する上昇限位置まで上昇したときに固定フレーム側の被検出部、例えば上昇限ストッパー１２を検出するように、上昇限検出用センサーＳＡ〜ＳＣを各昇降車両支持台１Ａ〜１Ｃに取り付けても良い。
【００２４】
而して図４に示すように、各上昇限検出用センサーＳＡ〜ＳＣの昇降車両支持台検出動作によって閉じる常開接点ＳＡａ〜ＳＣａは直列に接続され、これら全ての常開接点ＳＡａ〜ＳＣａが閉じたときに励磁されるリレーＲにより遅ＯＮタイマー回路ＴＣが作動し、この遅ＯＮタイマー回路ＴＣに設定されている一定遅延時間の経過後に当該遅ＯＮタイマー回路ＴＣから上昇限検出信号Ｓが出力されるように構成されている。
【００２５】
前記遅ＯＮタイマー回路ＴＣに設定する遅延時間は、各昇降車両支持台１Ａ〜１Ｃが上昇限位置まで上昇したことを各上昇限検出用センサーＳＡ〜ＳＣが検出して全ての常開接点ＳＡａ〜ＳＣａが閉じた時点から実際に全ての昇降車両支持台１Ａ〜１Ｃが吊り索６の引き込みによって上昇限ストッパー１２に押し当てられるまでに要する時間より若干長めに、例えば１／１００秒〜数秒の範囲内で設定される。即ち、各上昇限検出用センサーＳＡ〜ＳＣとして、昇降車両支持台１Ａ〜１Ｃが実際に上昇限ストッパー１２に押し当てられたときにＯＮ動作するセンサーが使用されない限り、その取付位置や精度、或いは動作時のタイムラグ等の関係で、その検出動作時期の被検出昇降車両支持台と上昇限ストッパー１２との間に隙間が生じることになるので、この隙間分＋αだけ被検出昇降車両支持台を吊り索６で引き上げて、全ての昇降車両支持台１Ａ〜１Ｃを確実に上昇限ストッパー１２に押し当てた状態とするのに要する時間だけ上昇限検出信号Ｓの出力を遅らせるために、前記遅延時間を任意に設定出来る遅ＯＮタイマー回路ＴＣが使用されている。
【００２６】
以下、具体的に使用方法及び作用を説明すると、下側に横行車両支持台が位置していない昇降車両支持台（図１では昇降車両支持台１Ａ）は、巻き取りドラム７を逆転駆動して吊り索６を繰り出すことにより入出庫レベルＮまで吊り下ろして下降限ストッパー（横行車両支持台２Ａ，２Ｂの横行用ガイドレール３）で受け止めさせ、他の昇降車両支持台（図１では昇降車両支持台１Ｂ，１Ｃ）は、横行車両支持台２Ａ，２Ｂ上の受け止め用フレーム１３ａ，１３ｂでそのまま上側支持レベルＵで受け止めさせた状態を初期状態とすれば、この初期状態では、入出庫レベルＮに位置する１台の昇降車両支持台と２台の横行車両支持台２Ａ，２Ｂとに対しては、自由に車両の自走による積み下ろし作業を行うことが出来る。
【００２７】
尚、各上昇限検出用センサーＳＡ〜ＳＣは、横行車両支持台２Ａ，２Ｂ上の受け止め用フレーム１３ａ，１３ｂによって上側支持レベルＵで受け止められている昇降車両支持台（図１では昇降車両支持台１Ｂ，１Ｃ）、即ち、上昇限ストッパー１２から若干量下がった位置にある昇降車両支持台は、検出しないものであっても良いし、当該昇降車両支持台も検出出来るものであっても良い。
【００２８】
而して、上記の初期状態では、吊り索６には昇降車両支持台１Ａ〜１Ｃ側の荷重が一切作用しておらず、吊り索６は、図３Ａに示すように、負荷伝達部材２０、伸長限まで伸長した状態の強い圧縮コイルスプリング２３、バネ受け座１８、ロッド１６、及び被検出用可動体１７を介して、弱い圧縮コイルスプリング２１の付勢力（圧縮反力）を受け、各回転案内輪１０ａ〜１１ｃから外れない程度に緊張せしめられている。このときの被検出用可動体１７の位置を、下降限相当位置Ｐ１として示しており、当該下降限相当位置Ｐ１に達した被検出用可動体１７を下降限検出用センサーＳ１が検出してＯＮ動作するように、当該下降限検出用センサーＳ１の取付位置が調整されている。
【００２９】
図１に於いて、上側支持レベルＵに位置する昇降車両支持台１Ｂ（又は１Ｃ）に対して車両の積み下ろし作業を行うときは、横行車両支持台２Ａ（又は２Ａ，２Ｂ）を横動させる前に、巻き取りドラム７を正転駆動して吊り索６を引き込み、全ての昇降車両支持台１Ａ〜１Ｃを上側支持レベルＵの上昇限位置、即ち、上昇限ストッパー１２で上昇を制止される位置まで吊り上げる。而して吊り索張力検出装置９では、吊り索６の引き込みに伴って先ず最初に図３Ａに示す初期状態から伸長状態にあった弱い圧縮コイルスプリング２１が、バネ変形制限部材２２に負荷伝達部材２０が当接する変形制限状態まで圧縮されて縮小し、被検出用可動体１７が図３Ａに示す下降限検出位置Ｐ１から図３Ｂに示す中立位置Ｐ２に移動する。このとき、下降限検出用センサーＳ１は、被検出用可動体１７から離れてＯＦＦ状態になる。
【００３０】
この後の吊り索６の引き込みにより、当該吊り索６の端末には、１台の昇降車両支持台の半分の荷重（昇降車両支持台の自重＋搭載車両重量）が作用するので、吊り索張力検出装置９では、吊り索６の端末に作用する負荷が被検出用可動体１７、ロッド１８、及びバネ受け座１８を介して強い圧縮コイルスプリング２３に作用し、バネ変形制限部材２２に当接して位置固定状態の負荷伝達部材２０との間で強い圧縮コイルスプリング２３が圧縮されて縮小し、被検出用可動体１７がロッド１６と共に吊り索６に引っ張られて、図３Ｂに示す中立位置から図の右方へ移動することになる。このときの被検出用可動体１７の中立位置からの移動量（強い圧縮コイルスプリング２３の縮小量）は、吊り索６が吊り下げる昇降車両支持台側の負荷の大きさに比例するので、許容最大荷重の車両を搭載している昇降車両支持台を吊り索６が吊り下げているときの被検出用可動体１７の中立位置からの移動量では、当該被検出用可動体１７が異常過大張力検出用センサーＳ２によって検出されないように、当該異常過大張力検出用センサーＳ２の取付位置が設定されている。
【００３１】
吊り索６の引き込みに伴って、搭載荷重の少ないものから順番に各昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２で上昇を制止される上昇限位置まで吊り上げられることになるので、先に上昇限位置に到着する２台の昇降車両支持台は既に上昇限ストッパー１２に押し当てられた状態になって、上昇限検出用センサーＳＡ〜ＳＣの内、これら２台の昇降車両支持台に対応する２つのセンサーは先に検出動作しており、最後に上昇限位置まで吊り上げられる最大荷重の昇降車両支持台が上昇限位置又はその付近の被検出位置に達すると、残っている１つの上昇限検出用センサーも検出動作を行うので、全ての常開接点ＳＡａ〜ＳＣａが閉じることになる。この後、先に説明した通り、遅ＯＮタイマー回路ＴＣに設定されている一定遅延時間だけ吊り索６の引き込み動作が継続されるので、全ての昇降車両支持台１Ａ〜１Ｃは、確実に上昇限ストッパー１２に押し当てられる上昇限位置に到達する。このとき（前記一定遅延時間の経過後に）、遅ＯＮタイマー回路ＴＣから出力される上昇限検出信号Ｓに基づいて巻き取りドラム７の正転駆動が自動停止される。
【００３２】
尚、吊り索張力検出装置９では、全ての昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２に押し当てられることにより、被検出用可動体１７が、昇降車両支持台を吊り上げている途中の位置から更に吊り索６で引っ張られる方向（図３の右方）へ若干量移動し、図３Ｃに示す上昇限相当位置Ｐ３に達する。この上昇限相当位置Ｐ３は、吊り索６に作用する負荷、即ち、昇降車両支持台１Ａ〜１Ｃ側の搭載荷重によって変化する。換言すれば、全ての昇降車両支持台１Ａ〜１Ｃを上昇限位置まで吊り上げたときの吊り索６に作用する張力の大きさは、昇降車両支持台１Ａ〜１Ｃ側の搭載荷重に応じて変化する。
【００３３】
若し仮に、機器や回路の故障等により、全ての昇降車両支持台１Ａ〜１Ｃが上昇限ストッパー１２で上昇を制止される上昇限位置に達したにもかかわらず、常開接点ＳＡａ〜ＳＣａの１つでも開いたままの状態であって、上昇限検出信号Ｓが出力されなければ、吊り索６の引き込みが継続されて強い圧縮コイルスプリング２３の圧縮量が増大し、被検出用可動体１７が上昇限相当位置Ｐ３を超えて吊り索６に引っ張られる方向に移動することになるので、当該被検出用可動体１７が図３Ｃに示す過剰引き込み相当位置Ｐ４に達したとき、異常過大張力検出用センサーＳ２が被検出用可動体１７を検出してＯＮ動作するように、当該異常過大張力検出用センサーＳ２の取付位置を設定しておくことにより、当該異常過大張力検出用センサーＳ２のＯＮ動作に基づいて巻き取りドラム７の正転駆動に非常停止をかける等、必要な非常時対策を講ずることが出来る。
【００３４】
上記のようにして全ての昇降車両支持台１Ａ〜１Ｃを上昇限ストッパー１２に当接する上昇限位置まで吊り上げたならば、横行車両支持台２Ａ，２Ｂの受け止め用フレーム１３ａ，１３ｂとその上の昇降車両支持台１Ｂ，１Ｃとの間にも隙間が生じるので、係る状態で横行車両支持台２Ａを昇降車両支持台１Ａの真下位置まで横動させ（又は両横行車両支持台２Ａ，２Ｂを昇降車両支持台１Ａ，１Ｂの真下位置まで横動させ）て、作業対象の昇降車両支持台１Ｂ（又は１Ｃ）の真下位置の入出庫レベルＮに空きスペースを確保し、この後、再び巻き取りドラム７を逆転駆動して吊り索６を繰り出し、作業対象の昇降車両支持台１Ｂ（又は１Ｃ）を入出庫レベルＮまで吊り下ろして下降限ストッパー（横行車両支持台２Ａ，２Ｂの横行用ガイドレール３）で受け止めさせると共に、他の昇降車両支持台は、横行車両支持台２Ａ，２Ｂ上の受け止め用フレーム１３ａ，１３ｂでそのまま上側支持レベルＵで受け止めさせる。即ち、先に説明した初期状態とすれば、入出庫レベルＮに位置する作業対象の昇降車両支持台１Ｂ（又は１Ｃ）と２台の横行車両支持台２Ａ，２Ｂとに対して車両の自走による積み下ろし作業を行うことが出来る。
【００３５】
上記のように全ての昇降車両支持台１Ａ〜１Ｃがそれ以上下降出来ない下降限位置に達して初期状態となったとき、先に説明したように被検出用可動体１７を下降限検出用センサーＳ１が検出してＯＮ動作するので、この下降限検出用センサーＳ１のＯＮ動作に基づいて巻き取りドラム７の逆転駆動が自動停止される。
【００３６】
上記実施形態では、本発明の昇降制御装置は、入出庫レベルＮとこれより上方の上側支持レベルＵとの間で吊り索６により昇降駆動される上側昇降車両支持台１Ａ〜１Ｃの昇降制御に利用したが、図５に示すように、入出庫レベルＮとこれよりも下方の下側支持レベルＤとの間で吊り索６により昇降駆動される下側昇降車両支持台３０Ａ〜３０Ｃの昇降制御装置としても利用することが出来るし、上側昇降車両支持台１Ａ〜１Ｃと下側昇降車両支持台３０Ａ〜３０Ｃとを１系統の吊り索で一括昇降駆動するタイプの駐車設備の昇降制御装置としても利用することが出来る。
【００３７】
尚、図５に示す構成の駐車設備では、図１に示す構成の駐車設備に対応する部分に同一符号を付して説明は省略するが、昇降車両支持台３０Ａ〜３０Ｃを択一的に入出庫レベルＮへ上昇可能にする手段として、各昇降車両支持台３０Ａ〜３０Ｃに、その真上に位置する横行車両支持台２Ａ，２Ｂに当接して入出庫レベルＮへの上昇を阻止される上昇阻止フレーム３１ａ〜３１ｃが立設されている。そして、各昇降車両支持台３０Ａ〜３０Ｃは、下側支持レベルＤでの車両格納空間を構成する地下ピット３２の床面等で構成される下降限ストッパー３３で受け止められる下降限位置と、固定フレーム側の上昇限ストッパー３４に各上昇阻止フレーム３１ａ〜３１ｃが当接する上昇限位置との間で昇降可能であり、各昇降車両支持台３０Ａ〜３０Ｃの上昇阻止フレーム３１ａ〜３１ｃには、横行車両支持台２Ａ，２Ｂへの当接時と上昇限ストッパー３４への当接時とに検出動作する上昇限検出用センサーＳＡ〜ＳＣが取り付けられることになる。
【００３８】
上記構成の駐車設備では、図５に示すように全ての昇降車両支持台３０Ａ〜３０Ｃが下側支持レベルＤの下降限ストッパー３３で受け止められる位置まで吊り下ろされている状態が初期状態となり、この初期状態では、各昇降車両支持台３０Ａ〜３０Ｃ上の上昇阻止フレーム３１ａ〜３１ｃと横行車両支持台２Ａ，２Ｂとの間には隙間があり、横行車両支持台２Ａ，２Ｂは自由に横動させることが出来る。
【００３９】
吊り索張力検出装置９と上昇限検出用センサーＳＡ〜ＳＣとによる昇降車両支持台３０Ａ〜３０Ｃの昇降制御は、先に説明した昇降車両支持台１Ａ〜１Ｃの昇降制御と同様に行えることは容易に理解出来るであろう。
【００４０】
尚、図５に示す実施形態では、昇降する昇降車両支持台３０Ａ〜３０Ｃ側に上昇限検出用センサーＳＡ〜ＳＣが取り付けられているが、これらセンサーＳＡ〜ＳＣに対する配線等を考えると、上昇限検出用センサーＳＡ〜ＳＣは、図１に示す実施形態のように固定フレーム側に配設するのが望ましい。従って、図５に示す構成の駐車設備に於いても、各昇降車両支持台３０Ａ〜３０Ｃごとに、横行車両支持台２Ａ，２Ｂ等で下側支持レベルＤからの上昇を阻止された状態を検出する第一の上昇限検出用センサーと、上昇限ストッパー（図示の上昇限ストッパー３４や横行車両支持台２Ａ，２Ｂの横行用ガイドレール３等）で入出庫レベルＮに於いて上昇を阻止された状態を検出する第二の上昇限検出用センサーとを固定フレーム側に配設し、これら各昇降車両支持台３０Ａ〜３０Ｃごとの第一第二２つの上昇限検出用センサーの常開接点を並列に接続して、前記各上昇限検出用センサーＳＡ〜ＳＣの常開接点ＳＡａ〜ＳＣａに代え、同様の昇降制御を行うことも出来る。
【００４１】
又、図５に示す実施形態では、昇降車両支持台３０Ａ〜３０Ｃの内、上昇させるべき１台の昇降車両支持台を除く残りの昇降車両支持台は、上昇阻止フレーム３１ａ〜３１ｃが破損しない限り、その真上に位置する横行車両支持台２Ａ，２Ｂによって入出庫レベルＮへの上昇が不能になっているので、図６に示すように、入出庫レベルＮに対応して固定フレーム側に設けられた上昇限ストッパー（図に示す上昇阻止フレーム３１ａ〜３１ｃに当接する上昇限ストッパー３４や横行車両支持台２Ａ，２Ｂの横行用ガイドレール３等）によって各昇降車両支持台３０Ａ〜３０Ｃが入出庫レベルＮに対応する上昇限位置に到達したときに検出動作する上昇限検出用センサーＳＡ〜ＳＣを各昇降車両支持台３０Ａ〜３０Ｃごとに固定フレーム側に設け、図７に示すように、各上昇限検出用センサーＳＡ〜ＳＣが検出動作したときに閉じる常開接点ＳＡａ〜ＳＣａを並列に接続し、常開接点ＳＡａ〜ＳＣａの内の何れか１つが閉じたとき、即ち、昇降車両支持台３０Ａ〜３０Ｃの内、１台の上昇操作対象の昇降車両支持台が入出庫レベルＮに対応する上昇限位置に達したときにリレーＲが作動するように構成しても良い。
【００４２】
但し、図６及び図７に示す構成を採用するときは、上昇操作対象の昇降車両支持台が空であって、他の昇降車両支持台には車両が搭載されていると、当該車両が搭載されている他の昇降車両支持台が横行車両支持台２Ａ，２Ｂで上昇を阻止される上昇限位置まで上昇する前に空の上昇操作対象の昇降車両支持台が入出庫レベルＮまで上昇して上昇限検出用センサーＳＡ〜ＳＣの内の１つが検出動作を行うことになる。この状態で吊り索６の引き込みを自動停止して車両を入出庫レベルＮまで上昇した昇降車両支持台上に搭載すると、その車両重量によっては、下側支持レベルＤにある他の昇降車両支持台が横行車両支持台２Ａ，２Ｂ等で上昇を阻止される上昇限位置まで上昇する、換言すれば、入出庫レベルＮに於いて車両が搭載された昇降車両支持台が若干下降することになる。このようなことを防止する必要があるときは、遅ＯＮタイマー回路ＴＣに設定する遅延時間を長くして、全ての昇降車両支持台３０Ａ〜３０Ｃがそれ以上上昇出来ない上昇限位置に達した後に、吊り索６の引き込みが自動停止されるように構成すれば良い。
【００４３】
又、吊り索６による各昇降車両支持台１Ａ〜１Ｃ，３０Ａ〜３０Ｃの吊り下げ方法（吊り索の掛け回し方法）や、その引き込み繰り出し手段も、上記実施形態のものに限定されない。更に、本発明で使用される吊り索張力検出装置も、従来周知のもの、即ち、強いバネのみを使用するタイプのものであっても良いし、この吊り索張力検出装置に対する吊り索の連係構成も、上記実施形態に示したように吊り索の端末を直接緊張方向に付勢する構成に限定されるものではなく、例えば、回転案内輪を介して吊り索の中間部を緊張方向に付勢する構成であっても良いし、１本の吊り索を折り返して二重吊り索とし、この二重吊り索で各昇降車両支持台を吊り下げる構成に於いて、回転案内輪を介して当該吊り索の一端折り返し部を緊張方向に付勢する構成等であっても良い。
【００４４】
【発明の効果】
本発明は以上のように実施し且つ使用することが出来るものであって、係る本発明の駐車設備の昇降制御装置によれば、吊り索で昇降駆動される複数台の昇降車両支持台の全てが下降限に達した状態で引き込み繰り出し装置による吊り索繰り出し動作を自動停止させる制御は、全ての昇降車両支持台がその状況での下降限に達して吊り索に昇降車両支持台側の負荷が作用しなくなったときの吊り索張力検出装置の検出動作に基づいて行わせるのであるから、各昇降車両支持台ごとに下降限検出用センサーを並設する場合よりも構成が簡単で安価に実施することが出来ると共に、動作上も全ての昇降車両支持台がその状況での下降限位置に達したことを確実に検出することが出来、少なくとも１台の昇降車両支持台（この種の駐車設備では昇降操作対象となるのは１台の昇降車両支持台となる）が上昇限に達したときに引き込み繰り出し装置による吊り索引き込み動作を停止させる制御は、当該昇降車両支持台が実際に上昇限位置に達したことを検出する上昇限検出用センサーの上昇限検出動作に基づいて行わせるのであるから、載せられた車両重量に関係なく昇降操作対象となる昇降車両支持台を確実に上昇限まで上昇させることが出来ると共に、従来の如く上昇限検出時に、実際に取り扱っている荷重の大きさに関係なく常に許容最大限の荷重以上の負荷が吊り索に作用するという不都合もなくなり、吊り索の耐用寿命を長くすることが出来る。
【００４５】
又、上記のように、載せられた車両重量に関係なく昇降操作対象となる昇降車両支持台を確実に上昇限まで上昇させることが出来るのであるから、万一、重量オーバーの車両が載せられたときでも、吊り索の引っ張り強度及び吊り索引き込み繰り出し手段が持ち堪えられる範囲内であれば、その重量オーバー車両が載せられた昇降車両支持台を取り敢えず上昇限位置まで吊り上げることが出来、従って、昇降車両支持台が下側の入出庫レベルと上側支持レベルとの間で昇降する駐車設備に於いて、入出庫レベルにある昇降車両支持台に重量オーバー車両を載せたまま運転手がその場を立ち去ったとしても、上側支持レベルにある他の昇降車両支持台を入出庫レベルまで下げることが出来なくなったり、或いは、昇降車両支持台が上側の入出庫レベルと下側支持レベルとの間で昇降する駐車設備に於いて、入出庫レベルで重量オーバー車両を載せた昇降車両支持台を下側支持レベルまで下ろしてしまったために、重量オーバー車両を載せた昇降車両支持台を入出庫レベルへ上げることが出来なくなるというような事態も生じなくなる。
【００４６】
尚、請求項２に記載の構成によれば、上昇限検出用センサーの検出方式や取付位置の関係等で、当該センサーが実際に検出動作したときの昇降車両支持台の位置が上昇限位置に対して若干下がった位置になるような事態を回避することが出来、確実に上昇限に達した状態で吊り索の引き込み動作を自動停止させることが出来る。又、上昇操作対象でない他の昇降車両支持台が、その位置（例えば上側支持レベルや下側支持レベル）での上昇限位置まで上昇したことを検出する上昇限検出用センサーが使用されていない状況に於いても、引き込み繰り出し装置による吊り索引き込み動作の停止制御を行わせるまでの遅延時間を長くすることによって、全ての昇降車両支持台をそれぞれの状況に於ける上昇限位置に吊り上げた状態で吊り索引き込み動作の停止制御を行わせることが出来る。
【００４７】
又、請求項３に記載の構成によれば、昇降車両支持台が入出庫レベルとこれより上方の上側支持レベルとの間で昇降する駐車設備である場合に、昇降車両支持台の台数と同一個数の上昇限検出用センサーを使用するだけで、全ての昇降車両支持台が上側支持レベルに於ける上昇限に達した状態でのみ吊り索引き込み動作を停止制御することが出来る。この場合、請求項４に記載の構成によれば、各昇降車両支持台ごとの上昇限検出用センサーは、固定不フレーム側に配設されるので、各センサーが昇降車両支持台側に設けられる場合と比較して、各センサーに対する配線が容易に行える。
【００４８】
更に、請求項５に記載の構成によれば、前記昇降車両支持台が入出庫レベルとこれより下方の下側支持レベルとの間で昇降する駐車設備であるにもかかわらず、昇降車両支持台の台数と同一個数の上昇限検出用センサーを使用するだけで、上昇操作対象の１台の昇降車両支持台は入出庫レベルに於ける上昇限位置に達すると共に、他の昇降車両支持台は下側支持レベルに於ける上昇限に達した状態を、これらセンサーのみで検出して、吊り索引き込み動作を停止制御することが出来る。
【００４９】
又、請求項６に記載の構成によれば、前記昇降車両支持台が入出庫レベルとこれより下方の下側支持レベルとの間で昇降する駐車設備である場合に、昇降車両支持台の台数と同一個数のセンサーを固定フレーム側に配設した簡単な構成を以て、上昇操作対象の１台の昇降車両支持台が入出庫レベルでの上昇限に達したときに吊り索引き込み動作を停止制御することが出来る。
【００５０】
又、請求項７に記載の構成によれば、下降限検出に利用している吊り索張力検出装置により、全ての昇降車両支持台が上昇限に達した後の吊り索の一定以上の過剰引き込みを検出させて吊り索引き込み動作を非常停止制御させることが出来るので、各昇降車両支持台ごとに個別に配設されている上昇限検出用センサーの故障時等に於いても自動的に非常停止をかけて、吊り索や吊り索案内用回転体の破損による昇降車両支持台の落下事故を未然に防止出来る。
【図面の簡単な説明】
【図１】Ａ図は駐車設備全体の構成を示す概略背面図であり、Ｂ図は本発明で使用する吊り索張力検出装置の一実施形態を示す平面図である。
【図２】各昇降車両支持台の昇降用駆動手段を説明する斜視図である。
【図３】図１Ｂに示す吊り索張力検出装置の動作状態を説明する縦断側面図であって、Ａ図は昇降車両支持台が下降限に達している状態を示し、Ｂ図は昇降車両支持台が吊り下げられた状態を示し、Ｃ図は吊り索の異常過大張力検出状態を示す。
【図４】図１Ａに示す上昇限検出用センサーの常開接点を組み込んだ制御回路の一部を示す回路図である。
【図５】別の実施形態での駐車設備全体の構成を示す概略背面図である。
【図６】更に別の実施形態での駐車設備全体の構成を示す概略背面図である。
【図７】図６に示す実施形態での上昇限検出用センサーの常開接点を組み込んだ制御回路の一部を示す回路図である。
【符号の説明】
１Ａ〜１Ｃ，３０Ａ〜３０Ｃ 昇降車両支持台
２Ａ，２Ｂ 横行車両支持台
３ 横行用ガイドレール
６ 吊り索
７ 巻き取りドラム（吊り索引き込み繰り出し手段）
８ モーター
９ 吊り索張力検出装置
１０ａ〜１０ｃ 被吊り下げ用回転案内輪
１１ａ〜１１ｃ 吊り下げ用回転案内輪（同軸２連）
１２，３４ 上昇限ストッパー
１３ａ，１３ｂ 受け止め用フレーム
１７ 被検出用可動体
２１ 弱い圧縮コイルスプリング
２２ バネ変形制限部材
２３ 強い圧縮コイルスプリング
３１ａ〜３１ｃ 上昇阻止フレーム
３３ 下降限ストッパー
ＳＡ〜ＳＣ 上昇限検出用センサー
ＳＡａ〜ＳＣａ 上昇限検出用センサーの検出動作で閉じる常開接点
Ｒ リレー
ＴＣ 遅ＯＮタイマー回路
Ｕ 上側支持レベル
Ｎ 入出庫レベル（下側支持レベル）
Ｄ 下側支持レベル[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a lifting control device used in a parking facility having a lifting drive hanging rope for sequentially suspending a plurality of lifting vehicle supports arranged in parallel and a pull-in / draw-out device.
[0002]
[Prior art]
2. Description of the Related Art A parking facility is known which includes a lifting cable for lifting and lowering a plurality of lifting and lowering vehicle supports that are arranged in parallel, and a pull-in / draw-out device. In this type of parking equipment, a plurality of parallel up-and-down vehicle supports are selectively switched so as to be able to move up and down, and are switched to be able to move up and down by extending a hanging cable that drives each up-and-down vehicle support. Only the ascending and descending vehicle supports are suspended down to the lower limit of the lower end level of the entire up and down stroke, and the other ascending and descending vehicle supports are received at the lower limit of the upper end level of the entire up and down stroke, and the hanging cable As a result, only one lift vehicle support platform that has been switched to be able to move up and down is lifted up to the upper limit of the uppermost level of the entire up / down stroke, and the other lifter vehicle supports are raised at the lower end level of the entire up / down stroke. It will be accepted by the limit.
[0003]
As described above, in this type of parking equipment, all the lifting and lowering vehicle supports are suspended down to the lowering limit (the lowering limit in a process that can be lowered at that time) by extending the hanging rope, and all the lifting vehicles are pulled in by the hanging rope. The support platform is lifted up to the ascending limit (the ascending limit of the ascending stroke at that time), but the tension acting on the hanging cable is such that all the lifting vehicle supporting platforms which are lowered by the extension of the hanging cable are lowered. When reaching or when the lowering vehicle support platform in the middle of the descent is caught by something and the descent is interrupted, it becomes smaller than the specified value, and when the lifting vehicle support platform is raised by pulling in the hanging cable, all When the ascending and descending vehicle support reaches the ascent limit, or when the ascending and descending vehicle support is caught by something and the ascent is interrupted, the value becomes larger than the specified value. Therefore, by detecting the tension acting on the hanging cable and controlling the pulling-in / drawing-out device of the hanging cable based on the detection result, it is possible to automatically stop all the lifting and lowering vehicle supports at the lower limit or the upper limit. The emergency stop can be applied during the ascent and descent according to.
[0004]
Thus, as described in Japanese Patent Application Laid-Open No. H11-163, all the lifting and lowering control devices of this kind of parking equipment use a hanging rope tension detecting device that detects the tension of a hanging rope that drives the lifting and lowering vehicle support base up and down. A low tension detecting operation corresponding to when the lifting vehicle support reaches the lower limit and a high tension detecting operation corresponding to when all the lifting vehicle supports reach the upper limit are performed, and the low tension detecting operation is performed. It is configured to stop and control the hanging-line feeding operation based on the high tension detecting operation and to stop and control the hanging indexing operation based on the high tension detecting operation.
[0005]
[Patent Document 1]
JP 2000-257295 A
[0006]
In the above-described conventional configuration, the detection of the arrival at the descent limit of the lifting / lowering vehicle support base is simpler and easier to control than disposing a descent limit detection sensor for every lifting / lowering vehicle support base. Although there is no problem in terms of operation, there is a problem in detecting the arrival of the ascending and descending vehicle support at the ascent limit. In other words, the hanging cable tension detecting device is designed on the assumption that a maximum allowable load (maximum vehicle weight of the vehicle that can be handled + maximum loading load) is acting on the lifting vehicle support base. At the time of detection of the arrival of the support platform at the limit of lifting, regardless of the size of the load actually handled, a load exceeding the maximum allowable load is always applied to the suspension cable, shortening the service life of the suspension cable. There are points.
[0007]
Also, when the lift vehicle support is raised and lowered between the lower loading / unloading level and the upper support level, the vehicle is mounted when the lift vehicle support is at the loading / unloading level, and then another Until the loading / unloading operation of the vehicle on the lifting / lowering vehicle support is performed, the vehicle remains at the entry / exit level due to safety measures. When an overweight vehicle is loaded, the next time the vehicle is loaded / unloaded to another lifting vehicle support, that is, when the lifting vehicle support on which the overweight vehicle is loaded is lifted, the suspension cable is first used. The tension detection device operates, the same detection state as when the lift vehicle support reaches the ascent limit, automatic stop works, and the lift vehicle support on which the overweight vehicle is mounted can be raised. No longer, the equipment itself for the driver does not stay at the scene of the already weight over the vehicle at this time can no longer be used.
[0008]
In addition, the lifting vehicle support moves up and down between the upper entry / exit level and the lower support level, and an overweight vehicle exceeding the allowable maximum load is placed on the lifting vehicle support. If the lifted vehicle support on which the overweight vehicle is mounted is immediately suspended at the lower support level, the lifted vehicle support will be lowered by gravity along with the extension of the hanging cable. However, the overload is not detected by the hanging cable tension detecting device, and when the lifting vehicle support base is lifted to the entry / exit level next time to leave the overweight vehicle, the hanging cable tension detecting device is used as described above. Working, automatic stoppage occurs, and the equipment does not move, so the equipment itself can no longer be used.
[0009]
[Means for Solving the Problems]
An object of the present invention is to provide a parking facility elevating control device capable of solving the above-mentioned conventional problems, and the means are indicated by reference numerals of embodiments described later. In a parking facility in which a plurality of vertically movable vehicle supports 1A to 1C can be selectively raised and lowered, a lifting and lowering drive hanging rope 6 for sequentially suspending the plurality of vertically movable vehicle supports 1A to 1C is provided. The pull-in / feed-out device (the winding drum 7) and the lifting cable when all the lifting / lowering vehicle supports 1A to 1C reach the lowering limit and the load on the lifting / lowering vehicle supports 1A to 1C is no longer applied to the lifting cable 6. 6. A hanging rope tension detecting device 9 for detecting the tension of the lift 6 and a plurality of ascent limit detecting sensors SA to SC for individually detecting that each of the ascending and descending vehicle supports 1A to 1C has reached the ascent limit. Based on the detecting operation of the rope tension detecting device 9, The lifting and unwinding operation by the pull-in and unwinding device (the take-up drum 7) is controlled to be stopped, and at least one of the plurality of ascent-difference detecting sensors SA to SC corresponding to the ascending and descending vehicle support table to be subjected to the ascending operation. The suspension indexing operation of the pull-in / feed-out device (winding drum 7) is stopped and controlled based on the limit detection sensor performing the ascent limit detection operation.
[0010]
When the present invention having the above-described configuration is implemented, the stop control of the hanging / indexing operation by the pull-in / feed-out device (winding drum 7) may be performed immediately after the ascent limit detecting sensors SA to SC perform the ascent limit detecting operation. Instead, after a lapse of a certain time from the time when the sensors for detecting the ascending limit SA to SC perform the ascending limit detecting operation, the stop control of the hanging and indexing operation by the draw-in / feed-out device (the take-up drum 7) can be performed. .
[0011]
When the lift vehicle supports 1A to 1C are parking facilities that move up and down between the entrance / exit level N and the upper support level U above the lift level, the lift limit for each lift vehicle support 1A to 1C is set. The detection sensors SA to SC are arranged so as to detect that the ascending limit at the upper support level U of each of the ascending and descending vehicle supports 1A to 1C has been reached. Can be configured to stop and control the hanging indexing operation by the pull-in / feed-out device (winding drum 7) based on the detection of the ascent limit operation. In this case, it is desirable that the ascent / descent detection sensors SA to SC for each of the ascending and descending vehicle supports 1A to 1C be disposed on the fixed non-frame side.
[0012]
When the ascending and descending vehicle support bases 30A to 30C are parking facilities that move up and down between the entry / exit level N and the lower support level D below the same, the ascent limit detection for each of the ascending and descending vehicle support bases 30A to 30C is performed. Sensors SA to SC are attached to each of the elevating vehicle supports 30A to 30C so that each of the ascending and descending vehicle supports 30A to 30C reaches the ascending limit in the lower support level D, and at the entry / exit level N. It is configured to detect that the ascending limit has been reached, and based on the fact that all of these ascending limit detecting sensors SA to SC perform the ascending limit detecting operation, the hanging and indexing operation by the pull-in / feed-out device (winding drum 7). Can be configured to stop control.
[0013]
Further, in the case where the ascending and descending vehicle support bases 30A to 30C are parking facilities that move up and down between the entrance / exit level N and the lower support level D below the same, the ascending limit for each of the ascending and descending vehicle support bases 30A to 30C is set. The detection sensors SA to SC are arranged on the fixed frame side so as to detect that each of the ascending and descending vehicle supports 30A to 30C has reached the ascending limit at the entrance / exit level N, and these ascending limit detecting sensors SA ＳＣSC, the pull-in / feed-out device (the take-up drum 7) stops the indexing operation based on the fact that one of the ascending limit detecting sensors corresponding to the ascending and descending vehicle support pedestal that has been subjected to the ascending operation has performed the ascending limit detecting operation. It is also possible to configure to control.
[0014]
In any case, the hanging rope tension detecting device 9 detects an abnormal excessive tension corresponding to an excessive retraction of the hanging rope 6 beyond a certain level after all the ascending and descending vehicle supports 1A to 1C and 30A to 30C reach the ascending limit. Can also be detected, and based on the abnormal excessive tension detection operation, the suspension indexing operation by the pull-in / feed-out device (winding drum 7) can be emergency-stop-controlled.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1A and 2, reference numerals 1A to 1C denote three side-by-side elevating vehicle supports, each of which is provided on a fixed frame side. It is guided by the elevating guide rail / supporting column 2 and is supported between the upper support level U and the loading / unloading level (lower support level) N so as to be able to move up and down. Reference numerals 2A and 2B denote two self-propelled traversing vehicle supports, which are traversably supported by traversing guide rails 3 laid at an entrance / exit level N via wheels 4 respectively.
[0016]
Reference numeral 5 denotes a lifting / lowering drive means for the lifting / lowering vehicle support bases 1A to 1C. The lifting / lowering drive means 5 includes a lifting line 6, a winding drum 7 and a drum driving motor 8 as a pulling-in / out means for pulling out the lifting line 6, and a lifting line tension detecting device 9. It is configured. The hanging cable 6 has one end locked and wound on the winding drum 7 and the other end locked on the hanging cable tension detecting device 9. １1C is supported on the fixed frame side so as to be positioned directly above the suspended rotation guide wheels 10a to 10c supported at the rear end thereof. The lifting vehicle supports 1A to 1C are sequentially suspended via the suspension rotary guide wheels (two coaxial links) 11a to 11c. The winding direction of the suspension rope 6 around the suspended rotation guide wheels 10a to 10c and the suspension rotation guide wheels 11a to 11c is the same as the winding direction of the winding drum 7.
[0017]
Thus, by driving the winding drum 7 to rotate in the normal direction and pulling the suspension ropes 6, all the ascending and descending vehicle supports 1 </ b> A to 1 </ b> C are lifted up to the upper support level U and stopped by the stoppers 12 on the fixed frame side. To the upper limit position. Further, by lifting the take-up drum 7 in the reverse direction and paying out the hanging ropes 6, the ascending and descending vehicle supports 1 </ b> A to 1 </ b> C, which can be lowered by gravity, are suspended to the loading / unloading level N as the hanging ropes 6 are pulled out. And a lower limit stopper provided at an appropriate place on the fixed frame side or on the ground-level foundation slab (in the illustrated example, the traversing guide rails 3 of the traversing vehicle support bases 2A and 2B installed on the fixed frame side are used. ), It descends to the lower limit position where it is stopped.
[0018]
In the illustrated embodiment, as means for making any one of the ascending and descending vehicle supports 1A to 1C capable of descending to the entry / exit level N, receiving frames 13a provided on the traversing vehicle supports 2A and 2B, 13b is used. That is, receiving frames 13a and 13b which receive the ascending and descending vehicle supports 1A to 1C at the upper support level U and prevent the lowering from the upper support level U are provided at the rear ends of the traversing vehicle supports 2A and 2B. It is erected. The means using the receiving frames 13a, 13b is an example, and therefore, the lowering of the non-descentable ascending / descending vehicle support at the upper support level U, where the traversing vehicle supports 2A, 2B are located immediately below. The limit is a position at which the traversing vehicle supports 2A, 2B can be received by the receiving frames 13a, 13b. Means for bringing any one of the ascending and descending vehicle supports 1A to 1C into a state capable of descending to the loading / unloading level N is not limited to the receiving frames 13a and 13b, but may have any configuration. Is also good.
[0019]
Next, a specific structure of the hanging cable tension detecting device 9 will be described. As shown in FIGS. 1B and 3, a rod 16 penetrating a fixed spring receiving seat 15 erected on a mounting base 14 on the fixed frame side, A movable body for detection 17 concentrically connected to one end of the rod 16, a spring receiving seat 18 attached to the other end of the rod 16, an outer fitting on the rod 16 and one end of the fixed spring receiving seat 15. , A load transmitting member 20 loosely fitted to the guide sleeve 18, a weak compression coil spring 21 loosely fitted to the guide sleeve 18 between the load transmitting member 20 and the fixed spring receiving seat 15. In order to limit the amount of compressive deformation of the compression coil spring 21, a cylindrical bush whose one end is fixed to the fixed spring receiving seat 15 in a state of being fitted around the compression coil spring 21. A deformation limiting member 22, a strong compression coil spring 23 fitted to the rod 16 between the load transmitting member 20 and the spring receiving seat 18 at the rod end, and a change in the position of the detected movable body 17 are detected. The terminals of the hanging cable 6 are connected to the movable body 17 to be detected.
[0020]
Therefore, the hanging cable 6 is attached in the tension direction by the compression reaction force of the two compression coil springs 21 and 23 concentrically connected in series via the movable body 17 to be detected, the rod 16 and the spring receiving seat 18. The strength (spring constant) of each of the springs 21 and 23 is set as follows. That is, as shown in FIG. 1A, all the ascending and descending vehicle support bases 1A to 1C are supported by a descent limit stopper (traverse guide rail 3) and receiving frames 13a and 13b on the traverse vehicle support bases 2A and 2B. In a state in which no load on the lifting vehicle support bases 1A to 1C is applied to the suspension cable 6, as shown in FIGS. 1B and 3A, the suspension cable 6 is extended with the strong compression coil spring 23 extended to the extension limit. When the load is applied to the suspension cable 6 by a weight equal to or greater than the weight of one empty lifting / lowering vehicle support base, the strong compression coil spring 23 and the strong compression coil spring 23 as shown in FIG. The weak compression coil spring 21 is compressed between the fixed spring receiving seat 15 and the weak compression coil spring 21 via the transmission member 20, and the load is applied immediately before the weak compression coil spring 21 is completely compressed. Reaches member 20 abuts on the spring deformation limiting member 22, the load of the elevator car support base 1A~1C side acting on the suspending member 6 is adapted to be received by the strong compression coil spring 23.
[0021]
As shown in FIG. 1B, the sensors S1 and S2 are attached to the fixed spring receiving seat 15 and supported by a support plate 24 located on the side of the movement path of the movable body 17 for detection in the moving direction of the movable body 17 for detection. It is mounted so that its position can be adjusted, and turns on when it faces the movable body 17 to be detected made of a magnetic material.
[0022]
Thus, as shown in FIG. 1A, the sensor S1 in this embodiment is in a state where all the ascending and descending vehicle supports 1A to 1C have reached the lower limit, that is, the lower limit stopper (traverse guide rail 3). And a lower limit detection sensor for detecting a state of being supported by the receiving frames 13a and 13b on the traversing vehicle supports 2A and 2B. When the suspension cable 6 is further retracted by a certain length from the state in which the lifting is stopped, that is, when the suspension cable 6 is overdrawn by a certain amount or more after all the ascending and descending vehicle supports 1A to 1C reach the ascending limit. This is a sensor that detects abnormal excessive tension.
[0023]
As shown in FIGS. 1A and 2, on the fixed frame side, for example, on each of the ascending limit stoppers 12, for each of the ascending and descending vehicle supports 1 A to 1 C, each of the ascending and descending vehicle supports 1 A to 1 C contacts the ascending limit stopper 12. Elevation limit detection sensors SA to SC for detecting that the ascent has reached the ascending upper limit position are attached. These sensors SA to SC include various contact type sensors such as a limit switch and a touch sensor for kicking an actuator by each of the ascending and descending vehicle supports 1A to 1C raised to the ascending limit position, and each ascending and descending vehicle support 1A to 1C. Various non-contact sensors such as a magnetic proximity switch that detects non-contact can be used. As shown by the imaginary line in FIG. 1A, when there is no problem in wiring, when each of the lift vehicle supports 1A to 1C is moved up to the ascending limit position where it comes into contact with the ascending stopper 12, the detection on the fixed frame side is performed. For example, sensors for detecting the ascending limit SA to SC may be attached to each of the ascending and descending vehicle supports 1A to 1C so as to detect the ascending limit stopper 12, for example.
[0024]
As shown in FIG. 4, the normally open contacts SAa to SCa which are closed by the ascending and descending vehicle support base detecting operation of each of the ascending limit detecting sensors SA to SC are connected in series, and all the normally open contacts SAa to SCa are connected. The delay ON timer circuit TC is activated by the relay R which is excited when the relay is closed, and the rising end detection signal S is output from the delay ON timer circuit TC after a predetermined delay time set in the delay ON timer circuit TC has elapsed. It is configured to be.
[0025]
The delay time set in the delay ON timer circuit TC is determined by detecting each of the ascending and descending vehicle supports 1A to 1C to the ascending limit position by each of the ascending limit detecting sensors SA to SC and detecting all normally open contacts SAa to SC. It is slightly longer than the time required until all the ascending and descending vehicle supports 1A to 1C are actually pressed against the ascending limit stopper 12 by the pulling in of the hanging cable 6 from the time when the SCa is closed, for example, in the range of 1/100 second to several seconds. Set within. That is, as long as the sensors that turn on when the ascending and descending vehicle support bases 1A to 1C are actually pressed against the ascending limit stoppers 12 are not used as the ascending limit detecting sensors SA to SC, their mounting positions and accuracy, or Because of the time lag and the like during the operation, a gap is formed between the detected ascending and descending vehicle support base and the ascending limit stopper 12 at the detection operation timing. Therefore, the detected ascending and descending vehicle support base is suspended by this gap + α. In order to delay the output of the ascending limit detection signal S by the time required for pulling up by the rope 6 and bringing all the ascending and descending vehicle supports 1A to 1C into a state of being pressed against the ascending limit stopper 12, the delay time is set to A delay ON timer circuit TC which can be set arbitrarily is used.
[0026]
Hereinafter, the method of use and the operation will be described in detail. The lift vehicle support base (the lift vehicle support 1A in FIG. 1) in which the traversing vehicle support is not positioned below drives the winding drum 7 in the reverse direction. The suspension cable 6 is extended to be lowered to the entry / exit level N by being pulled out and received by the lower limit stoppers (traverse guide rails 3 of the traversing vehicle supports 2A, 2B). The bases 1B, 1C) are set to the entrance / exit level N in this initial state, assuming that the state of being received at the upper support level U by the receiving frames 13a, 13b on the traversing vehicle support bases 2A, 2B is the initial state. The unloading operation by the self-propelled movement of the vehicle can be freely performed on the one lift vehicle support stand and the two transverse vehicle support stands 2A and 2B.
[0027]
In addition, each of the sensors SA to SC for detecting the ascending limit is connected to an ascending and descending vehicle support table (an ascending and descending vehicle support table in FIG. 1) which is received at an upper support level U by receiving frames 13a and 13b on the traversing vehicle support tables 2A and 2B. 1B, 1C), that is, the lift vehicle support at a position slightly lower than the lift limit stopper 12 may not be detected, or the lift vehicle support may be detectable.
[0028]
Thus, in the above initial state, no load is applied to the suspension cable 6 on the side of the lifting vehicle support bases 1A to 1C, and the suspension cable 6 is, as shown in FIG. The urging force (compression reaction force) of the weak compression coil spring 21 is received via the strong compression coil spring 23, the spring receiving seat 18, the rod 16, and the detected movable body 17 in the state of being extended to the extension limit, and each rotation is performed. The guide wheels 10a to 11c are tensioned so as not to come off. The position of the detected movable body 17 at this time is shown as the lower limit corresponding position P1, and the lower movable sensor 17 that has reached the lower limit corresponding position P1 is detected by the lower limit sensor S1 and turned on. The mounting position of the lower limit detection sensor S1 is adjusted to operate.
[0029]
In FIG. 1, when loading / unloading a vehicle with respect to the elevating vehicle support 1B (or 1C) located at the upper support level U, before moving the traversing vehicle support 2A (or 2A, 2B) sideways. Then, the take-up drum 7 is driven to rotate in the normal direction, the suspension cable 6 is pulled in, and all the ascending and descending vehicle supports 1A to 1C are moved to the upper limit position of the upper support level U, that is, the position where the raising is stopped by the upper limit stopper 12. Lift up to. In the hanging cable tension detecting device 9, the weak compression coil spring 21 which has been in the extended state from the initial state shown in FIG. The movable body 17 to be detected moves from the lower limit detection position P1 shown in FIG. 3A to the neutral position P2 shown in FIG. At this time, the sensor S1 for detecting the lower limit is separated from the movable body 17 to be detected and is turned off.
[0030]
When the suspension cable 6 is pulled in thereafter, a half of the load of one lifting vehicle support (self-weight of the lifting vehicle support + the weight of the mounted vehicle) acts on the terminal of the suspension cable 6, so that the tension of the suspension cable 6 is applied. In the detection device 9, the load acting on the end of the hanging cable 6 acts on the strong compression coil spring 23 via the movable body 17 to be detected, the rod 18, and the spring receiving seat 18, and comes into contact with the spring deformation limiting member 22. Then, the strong compression coil spring 23 is compressed and contracted between the load transmission member 20 in the fixed position and the movable body 17 to be detected is pulled by the hanging cable 6 together with the rod 16 from the neutral position shown in FIG. 3B. It will move to the right of the figure. At this time, the amount of movement of the movable body 17 to be detected from the neutral position (the amount of reduction of the strong compression coil spring 23) is proportional to the magnitude of the load on the lift vehicle support that the hanging cable 6 hangs. With the amount of movement from the neutral position of the movable body 17 to be detected when the hanging cable 6 is hung on the lifting / lowering vehicle support table on which the vehicle having the maximum load is mounted, the movable body 17 to be detected has an excessively high tension. The attachment position of the abnormal excessive tension detecting sensor S2 is set so as not to be detected by the detecting sensor S2.
[0031]
As the hanging cable 6 is pulled in, the ascending and descending vehicle supports 1A to 1C are lifted in order from the one with the smallest loading load to the ascending limit position where the ascending limit stopper 12 stops the ascending and descending. The two ascending and descending vehicle supports arriving at the limit position are already pressed against the ascending limit stopper 12 and correspond to these two ascending and descending vehicle supports among the ascending limit detecting sensors SA to SC. The two sensors perform the detection operation first, and finally, when the lifting / lowering vehicle support with the maximum load suspended to the ascending limit position reaches the ascending limit position or a detected position in the vicinity thereof, one remaining ascending limit detection is performed. Since the application sensor also performs the detection operation, all the normally open contacts SAa to SCa are closed. Thereafter, as described above, the pulling-in operation of the hanging cable 6 is continued for a fixed delay time set in the delay ON timer circuit TC, so that all the lifting vehicle supports 1A to 1C are reliably moved to the upper limit. It reaches the upper limit position pressed against the stopper 12. At this time (after the elapse of the predetermined delay time), the forward rotation drive of the winding drum 7 is automatically stopped based on the rising end detection signal S output from the delay ON timer circuit TC.
[0032]
In addition, in the hanging cable tension detecting device 9, the position of the movable body 17 to be detected is in the middle of lifting the lifting vehicle support base by pressing all the lifting vehicle support bases 1 </ b> A to 1 </ b> C against the lifting limit stopper 12. 3A, moves a little further in the direction in which it is pulled by the hanging cable 6 (to the right in FIG. 3), and reaches a position P3 corresponding to the ascending limit shown in FIG. 3C. The position P3 corresponding to the ascending limit changes depending on the load acting on the suspension cable 6, that is, the mounting load on the lift vehicle support bases 1A to 1C. In other words, the magnitude of the tension acting on the hanging cable 6 when all the lifting vehicle supports 1A to 1C are lifted to the ascending limit position changes according to the mounting load on the lifting vehicle supporting platforms 1A to 1C. .
[0033]
If all the ascending and descending vehicle supports 1A to 1C reach the ascending limit positions where the ascending limit stoppers 12 stop the ascending due to the failure of the devices and circuits, etc., the normally open contacts SAa to SCa are If at least one of them remains open and the ascending limit detection signal S is not output, the pulling of the suspension cable 6 is continued, the compression amount of the strong compression coil spring 23 increases, and the detection movable body 17 Is moved in the direction in which the movable body 17 to be detected reaches the excessive retraction corresponding position P4 shown in FIG. 3C, because the excessively high tension is detected. By setting the mounting position of the abnormal excessive tension detecting sensor S2 so that the detecting sensor S2 detects the movable body 17 to be detected and turning ON, the abnormal excessive tension detecting sensor S2 is set. Such as applying an emergency stop in the forward drive of the winding drum 7 based on the ON operation, it is possible to take the emergency measures required.
[0034]
When all of the ascending and descending vehicle supports 1A to 1C have been lifted to the ascending limit position where they abut against the ascending stopper 12 as described above, the receiving frames 13a and 13b of the traversing vehicle supports 2A and 2B and the ascending and descending thereon. Since a gap is also formed between the vehicle supports 1B and 1C, the traversing vehicle support 2A is traversed to a position directly below the ascending and descending vehicle support 1A in such a state (or the traversing vehicle supports 2A and 2B are moved up and down). (To the position just below the supports 1A, 1B) to secure an empty space at the loading / unloading level N just below the elevating vehicle support 1B (or 1C) to be worked. Is driven in reverse to pull out the hanging cable 6, and the lifting / lowering vehicle support 1B (or 1C) to be worked is hung down to the loading / unloading level N, and the lower limit stopper (the traversing guide of the traversing vehicle support 2A, 2B). Together causes received by Lumpur 3), the other lifting vehicle support base, transverse vehicle support base 2A, receiving frame 13a on 2B, it causes received by upper support level U at 13b. In other words, in the initial state described above, the vehicle travels by itself with respect to the ascending / descending vehicle support 1B (or 1C) and the two traversing vehicle supports 2A and 2B located at the entry / exit level N. Loading and unloading work.
[0035]
As described above, when all the ascending and descending vehicle supports 1A to 1C reach the descent limit position where they cannot be further lowered and are in the initial state, the movable body 17 to be detected is moved to the descent limit detection sensor as described above. Since the ON operation is performed upon detection of S1, the reverse rotation drive of the winding drum 7 is automatically stopped based on the ON operation of the sensor S1 for detecting the lower limit.
[0036]
In the above embodiment, the lifting control device of the present invention is used for lifting control of the upper lifting vehicle support bases 1A to 1C driven up and down by the hanging cables 6 between the entrance / exit level N and the upper supporting level U above this. As shown in FIG. 5, as shown in FIG. 5, ascending / descending control of lower elevating vehicle support bases 30 </ b> A to 30 </ b> C driven up and down by hanging cables 6 between the entrance / exit level N and the lower supporting level D below this level. It can also be used as a device, and also as a lift control device of a parking facility of a type in which the upper lift vehicle support bases 1A to 1C and the lower lift vehicle support stands 30A to 30C are driven up and down collectively by a single suspension cable. Can be used.
[0037]
In the parking facility having the configuration shown in FIG. 5, the portions corresponding to those of the parking facility having the configuration shown in FIG. As means for making it possible to ascend to the take-out level N, ascending to which the ascending / descending level N is prevented by contacting each of the ascending and descending vehicle supports 30A to 30C with the traversing vehicle supports 2A and 2B located directly above them. The blocking frames 31a to 31c are provided upright. Each of the ascending and descending vehicle support bases 30A to 30C has a descent limit position which is received by a descent limit stopper 33 constituted by a floor surface of an underground pit 32 constituting a vehicle storage space at the lower support level D, and a fixed frame. Can be moved up and down between the ascending limit positions where the ascending limit stoppers 34 abut against the ascending limit frames 31a to 31c, and the ascending ascending frames 31a to 31c of the ascending and descending vehicle support bases 30A to 30C have traversing vehicle supports. The sensors SA to SC for detecting the ascending limit which are detected when the abutment with the tables 2A and 2B and the abutment with the ascending limit stopper 34 are attached.
[0038]
In the parking facility having the above configuration, the initial state is a state in which all the ascending and descending vehicle support bases 30A to 30C are suspended to a position where they can be received by the lower limit stopper 33 of the lower support level D, as shown in FIG. In the initial state, there is a gap between the lift prevention frames 31a to 31c on each of the ascending and descending vehicle supports 30A to 30C and the traversing vehicle supports 2A and 2B, and the traversing vehicle supports 2A and 2B can be moved freely. I can do it.
[0039]
The lifting control of the lifting vehicle supports 30A to 30C by the hanging cable tension detecting device 9 and the sensors for detecting the lifting limit SA to SC can be easily performed in the same manner as the lifting control of the lifting vehicle supports 1A to 1C described above. You will understand.
[0040]
In the embodiment shown in FIG. 5, the sensors SA to SC for detecting the ascending limit are mounted on the side of the ascending and descending vehicle support bases 30A to 30C, but considering the wiring and the like for these sensors SA to SC, the ascending limit is considered. The detection sensors SA to SC are desirably provided on the fixed frame side as in the embodiment shown in FIG. Therefore, in the parking facility having the configuration shown in FIG. 5, the state where the elevation from the lower support level D is prevented by the traversing vehicle supports 2A and 2B is detected for each of the ascending and descending vehicle supports 30A to 30C. At the entry / exit level N by the first ascending limit detection sensor and ascending limit stoppers (such as the ascending limit stopper 34 and the traversing guide rails 3 of the traversing vehicle supports 2A and 2B). A second sensor for detecting the ascending limit is disposed on the fixed frame side, and the normally open contacts of the first and second sensors for detecting the ascending limit of each of the ascending and descending vehicle supports 30A to 30C are arranged in parallel. , And the same ascent / descent control can be performed instead of the normally open contacts SAa to SCa of the ascent / descent detection sensors SA to SC.
[0041]
In the embodiment shown in FIG. 5, of the lifting vehicle supports 30 </ b> A to 30 </ b> C, the remaining lifting vehicle supports other than one lifting vehicle support to be raised are provided as long as the lifting prevention frames 31 a to 31 c are not damaged. Since it is impossible to ascend to the entry / exit level N due to the traversing vehicle supports 2A, 2B located immediately above, it is provided on the fixed frame side corresponding to the entry / exit level N as shown in FIG. The ascending and descending vehicle supports 30A to 30C enter and leave the vehicle by the ascending limit stoppers (such as the ascending limit stopper 34 abutting on the ascending prevention frames 31a to 31c and the traversing guide rails 3 of the traversing vehicle supports 2A and 2B). Ascending limit detecting sensors SA to SC that detect when reaching the ascending limit position corresponding to the level N are provided on the fixed frame side for each of the ascending and descending vehicle supports 30A to 30C. As shown in FIG. 7, normally open contacts SAa to SCa which are closed when each of the sensors for detection of rising end SA to SC perform a detecting operation are connected in parallel, and any one of the normally open contacts SAa to SCa is closed. That is, the relay R is configured to operate when one of the ascending and descending vehicle supports of the ascending and descending vehicle supports 30A to 30C reaches an ascending limit position corresponding to the entry / exit level N. May be.
[0042]
However, when the configuration shown in FIG. 6 and FIG. 7 is adopted, if the ascending / descending vehicle support is empty and another vehicle is mounted on another ascending / descending vehicle support, the vehicle is mounted. Before the other ascending and descending vehicle support pedestal ascends to the ascending limit position where the ascending and descending vehicle pedestal is stopped by the traversing vehicle pedestal 2A, 2B, the empty ascending and descending vehicle pedestal rises to the entry / exit level N. One of the ascent limit detection sensors SA to SC performs a detection operation. In this state, if the pulling of the hanging cable 6 is automatically stopped and the vehicle is mounted on the lifted vehicle support which has been raised to the entry / exit level N, depending on the weight of the vehicle, other liftable vehicle support at the lower support level D may be used. Rises to an ascending limit position where the movement is stopped by the traversing vehicle supports 2A, 2B and the like, in other words, at the entry / exit level N, the elevating vehicle support on which the vehicle is mounted is slightly lowered. When it is necessary to prevent such a situation, the delay time set in the delay ON timer circuit TC is lengthened, and after all the ascending and descending vehicle supports 30A to 30C reach the ascending limit positions where they cannot be further raised. What is necessary is just to comprise so that pulling in of the hanging line 6 may be stopped automatically.
[0043]
In addition, the method of suspending the lifting vehicle supports 1A to 1C and 30A to 30C by the suspension cable 6 (the method of hanging the suspension cable) and the means for pulling out and extending the suspension are not limited to those of the above-described embodiment. Further, the hanging rope tension detecting device used in the present invention may be a conventionally known one, that is, a type using only a strong spring, or a structure in which a hanging rope is linked to the hanging rope tension detecting device. However, the present invention is not limited to the configuration in which the terminal of the hanging cable is directly urged in the tensioning direction as shown in the above-described embodiment.For example, the intermediate portion of the hanging cable is urged in the tensioning direction via a rotating guide wheel. In a configuration in which one suspension cable is turned back to form a double suspension cable, and each of the lifting vehicle supports is suspended by the double suspension cable, the suspension is performed via a rotary guide wheel. A configuration or the like for urging the one-end folded portion of the rope in the tension direction may be used.
[0044]
【The invention's effect】
The present invention can be implemented and used as described above, and according to the lift control device of the parking facility of the present invention, all of the plurality of lifting vehicle supports that are driven up and down by hanging cables are used. The control to automatically stop the pulling line feeding operation by the pulling-in / drawing-out device in the state where the lowering limit has been reached is that all the lifting / lowering vehicle supports reach the lowering limit in that situation and the load on the lifting / lowering vehicle support side is applied to the lifting lines. Since the operation is performed based on the detection operation of the hanging cable tension detecting device when the operation is stopped, the configuration is simpler and cheaper than the case where the sensor for detecting the lower limit is juxtaposed for each elevating vehicle support base. In operation, it is possible to reliably detect that all the lift vehicle supports have reached the lower limit position in that situation, and at least one lift vehicle support (in this type of parking equipment, Lifting The control to stop the hanging indexing operation by the draw-in / feed-out device when the ascending and descending vehicle support reaches the ascending limit is that the ascending and descending vehicle support is actually at the ascending limit position. Since it is performed based on the ascending limit detecting operation of the ascending limit detecting sensor that detects that the vehicle has reached, the ascending and descending vehicle support base to be subjected to the ascending and descending operation is securely raised to the ascending limit regardless of the weight of the loaded vehicle. In addition to this, when the ascent limit is detected as in the past, the inconvenience that a load exceeding the allowable maximum load always acts on the hanging cable regardless of the actual load being handled is eliminated, and the service life of the hanging cable is eliminated. Can be lengthened.
[0045]
In addition, as described above, the lifting vehicle support base to be lifted and lowered can be reliably raised to the upper limit regardless of the weight of the loaded vehicle, so that an overweight vehicle is loaded. At any time, as long as the pulling strength of the suspension cable and the suspension indexing / pulling-out / feeding means are within a range that can be endured, the lifting vehicle support table on which the overweight vehicle is mounted can be lifted to the ascending limit position without any effort, and therefore, the lifting vehicle In a parking facility where the support base moves up and down between the lower entry / exit level and the upper support level, the driver left the place with the overweight vehicle on the elevating vehicle support base at the entry / exit level As a result, it is impossible to lower the other lifting vehicle support at the upper support level to the entry / exit level, or the elevating vehicle support is at the upper entry / exit In a parking facility that moves up and down between the bell and the lower support level, an overweight vehicle was loaded because the lifting vehicle support base that loaded the overweight vehicle at the entry / exit level was lowered to the lower support level. A situation in which the lifting vehicle support base cannot be raised to the entry / exit level does not occur.
[0046]
According to the configuration of the second aspect, the position of the ascending and descending vehicle support when the sensor actually performs the detecting operation is set to the ascending limit position due to the detection method of the ascending limit detecting sensor and the relationship of the mounting position. On the other hand, it is possible to avoid a situation in which the position is slightly lowered, and it is possible to automatically stop the pulling-in operation of the hanging cable when the ascending limit is reached. In addition, a situation in which a sensor for detecting an ascending limit is not used to detect that another ascending and descending vehicle support that is not an object of ascending operation has risen to an ascending limit position at that position (for example, an upper supporting level or a lower supporting level). Also, by increasing the delay time until the stop control of the hanging indexing operation by the drawing-in / feeding-out device is performed, all the lifting and lowering vehicle supports are lifted to the ascending limit positions in the respective situations. Stop control of the hanging indexing operation can be performed.
[0047]
According to the third aspect of the present invention, when the lift vehicle support base is a parking facility that moves up and down between the entry / exit level and the upper support level above the same, the number of lift vehicle supports is the same as the number of lift vehicle supports. Only by using the number of sensors for detecting the ascending limit, the suspension indexing operation can be stopped and controlled only when all the ascending and descending vehicle supports have reached the ascending limit at the upper support level. In this case, according to the configuration of the fourth aspect, the sensor for detecting the ascending limit for each of the ascending and descending vehicle supports is disposed on the fixed unframed side, so that each sensor is provided on the ascending and descending vehicle support side. Wiring to each sensor can be easily performed as compared with the case.
[0048]
Furthermore, according to the configuration of the fifth aspect, the elevating vehicle support base is a parking facility that moves up and down between the entry / exit level and a lower support level below the elevating vehicle support base. Only by using the same number of sensors for detecting the ascending limit, the number of ascending and descending vehicle supports reaches the ascending limit position at the entry / exit level, and the other ascending and descending vehicle supports are lowered. The state in which the ascending limit in the side support level has been reached can be detected only by these sensors, and the suspension indexing operation can be stopped and controlled.
[0049]
According to the configuration of claim 6, when the lift vehicle support base is a parking facility that moves up and down between an entrance / exit level and a lower support level below the same, the number of lift vehicle supports is With the simple configuration in which the same number of sensors as those on the fixed frame are arranged, when one of the ascending / descending vehicle support platforms reaches the ascent limit at the entrance / exit level, the suspension indexing operation is stopped and controlled. I can do it.
[0050]
In addition, according to the configuration of claim 7, the suspension cable tension detecting device used for detecting the lowering limit causes the suspension cable to be pulled in more than a certain amount after all the lifting and lowering vehicle supports have reached the lifting limit. Emergency stop control of the hanging indexing operation can be performed, so that the emergency stop is automatically stopped even in the event of a failure of the ascent limit detection sensor that is individually provided for each elevating vehicle support base. By doing so, it is possible to prevent a falling accident of the lifting vehicle support base due to breakage of the hanging cable or the rotating body for guiding the hanging cable beforehand.
[Brief description of the drawings]
FIG. 1A is a schematic rear view showing the configuration of the entire parking facility, and FIG. 1B is a plan view showing an embodiment of a hanging rope tension detecting device used in the present invention.
FIG. 2 is a perspective view illustrating a lifting drive unit of each lifting vehicle support base.
3 is a longitudinal sectional side view for explaining an operation state of the hanging rope tension detecting device shown in FIG. 1B, wherein FIG. 3A shows a state in which a lifting and lowering vehicle support has reached a lower limit, and FIG. Fig. C shows a state in which the table is suspended, and Fig. C shows a state in which abnormal excessive tension is detected in the suspension cable.
FIG. 4 is a circuit diagram showing a part of a control circuit incorporating the normally open contact of the sensor for detecting the limit of ascending shown in FIG. 1A.
FIG. 5 is a schematic rear view showing the configuration of the entire parking facility according to another embodiment.
FIG. 6 is a schematic rear view showing the configuration of the entire parking facility according to still another embodiment.
FIG. 7 is a circuit diagram showing a part of a control circuit in which the normally open contact of the sensor for detecting an ascending limit in the embodiment shown in FIG. 6 is incorporated.
[Explanation of symbols]
1A-1C, 30A-30C Elevating vehicle support base
2A, 2B Traversing vehicle support
3 Guide rail for traversing
6 hanging cable
7 Winding drum (suspending indexing feeding means)
8 motor
9 Hanging cable tension detector
10a to 10c Suspended rotary guide wheels
11a-11c Suspended rotary guide wheels (coaxial two stations)
12,34 Ascent limit stopper
13a, 13b Receiving frame
17 Moving body for detection
21 Weak compression coil spring
22 Spring deformation limiting member
23 Strong compression coil spring
31a-31c Rise prevention frame
33 Lower limit stopper
SA ~ SC Rise limit detection sensor
SAa to SCa Normally open contacts that are closed by the detection operation of the sensor for detecting the end of rising
R relay
TC slow ON timer circuit
U Upper support level
N Entry / exit level (lower support level)
D Lower support level
