JP3770787B2

JP3770787B2 - Loading platform lifting device

Info

Publication number: JP3770787B2
Application number: JP2000308081A
Authority: JP
Inventors: 隆敏北條; 学樋本
Original assignee: Kyokuto Kaihatsu Kogyo Co Ltd
Current assignee: Kyokuto Kaihatsu Kogyo Co Ltd
Priority date: 2000-10-06
Filing date: 2000-10-06
Publication date: 2006-04-26
Anticipated expiration: 2020-10-06
Also published as: JP2002114076A

Description

【０００１】
【発明の属する技術分野】
本発明は、荷受台昇降装置単体を搬送する際に搬送姿勢を簡単な作業で行うことができるようにするとともに、搬送されてきた荷受台昇降装置を車両に取り付ける際も簡単な作業にて行うことができる荷受台昇降装置に関するものである。
【０００２】
【従来の技術】
一般に荷受台昇降装置を車両に組み付ける場合には、荷受台昇降装置の製造場所から車両への組み付けを行う架装場所まで荷受台昇降装置を搬送し、組み付けを行う架装場所にて組み付け作業を行い、完成させるようになっている。ところで、従来の荷受台昇降装置の搬送姿勢は、平行リンク側と荷受台とを分離させ、それぞれ別個の搬送パレットにて搬送させるようになっている。その理由は、荷受台は水平状態から起立状態までは回動が可能な構造になっているが、水平状態、起立状態もしくはその中間の状態のいずれの状態においても、平行リンクと荷受台を接続したままで搬送しようとすると、搬送姿勢の幅や高さが非常に大きくなると共に大きなデッドスペースが発生し、搬送時の無駄が生じることから、上記の如く分離した状態での搬送を行っていた。
【０００３】
【発明が解決しようとする課題】
ところが、前記のように平行リンク側と荷受台とを分離して搬送すると、まず搬送前の工程で分離作業が必要となり、搬送後の工程で平行リンク側と荷受台との位置合わせが非常に煩雑になるという欠点があった。また、搬送時においても、搬送物が２個になり、搬送前の保管や搬送時の収容スペースにおいて余分なスペースが必要になる等の問題があった。そこで、本発明は荷受台昇降装置の搬送前および搬送後の作業を容易にするとともに搬送前の保管スペースや搬送時の搬送スペースの縮小化を図ることができる荷受台昇降装置を提供するものである。
【０００４】
【課題を解決するための手段】
本発明において請求項１では、車体に取り付けうる支持フレームの左右端部に取付部材を固定し、前記各取付部材に上リンクと伸縮部材とからなる平行リンクを上下回動可能に設け、前記平行リンクの上リンクと伸縮部材の各端部を荷受台に軸支し、前記平行リンクを駆動手段にて上下回動させることにより荷受台を水平状態で昇降させうる荷受台昇降装置において、前記荷受台の基部側に前記平行リンクの一部が入り込める切り欠き溝を形成し、更に伸縮部材と荷受台とを連結している連結ピンを脱着可能とし、荷受台昇降装置を搬送する際には、前記連結ピンを外すことにより、荷受台と上リンクとの軸支点を中心に荷受台を回動させるとともに前記切り欠き溝に平行リンクの一部を入り込ませて平行リンクの上方に荷受台を重ね合わせた状態にすることができるようにしたことを特徴とするものである。
【０００５】
これにて、荷受台を平行リンク側に接続した状態で搬送することができるので、搬送前後の作業が容易になるとともに保管時および搬送時の余分なスペースを無くすことができる。また、荷受台を起立させるための伸縮部材を平行リンクの一部に兼用させたので、装置全体を安価なものにすることができる。請求項２では、車体に取り付けうる支持フレームの左右端部に取付部材を固定し、前記各取付部材に上リンクと伸縮部材とからなる平行リンクを上下回動可能に設け、前記平行リンクの上リンクと伸縮部材の各端部を荷受台に軸支し、前記平行リンクを駆動手段にて上下回動させることにより荷受台を水平状態で昇降させうる荷受台昇降装置において、前記荷受台の基部側に前記平行リンクの一部が入り込める切り欠き溝を形成し、更に伸縮部材と荷受台とを連結している連結ピンを脱着可能とし、荷受台昇降装置を搬送する際には、前記連結ピンを外すことにより、荷受台と上リンクとの軸支点を中心に荷受台を平行リンクの上方まで回動させ、前記切り欠き溝に平行リンクの一部を入り込ませるとともに荷受台の一部を荷受台昇降装置の任意の部材にて支持する状態にすることができるようにしたことを特徴とするものである。
【０００６】
これにて、前記効果とともに搬送姿勢で荷受台を支持するための余分な部材を不要にすることができる。請求項３では、車体に取り付けうる支持フレームの左右端部に取付部材を固定し、前記各取付部材に上リンクと伸縮部材とからなる平行リンクを駆動手段にて上下回動可能に設け、前記平行リンクの端部に連結リンクと荷受台とを連結シャフトで軸支し、更に荷受台を前記連結リンクに連結ピンにて連結するようにした荷受台昇降装置において、前記上リンクと伸縮部材の各端部を連結リンクにて連結して、上リンクと伸縮部材とが平行状態を保持できるようになっており、前記荷受台の基部側に前記平行リンクの一部が入り込める切り欠き溝を形成し、荷受台昇降装置を搬送する際には、前記荷受台に対する連結ピンを外して、前記連結シャフトを中心に荷受台を平行リンクの上方まで回動させ、前記切り欠き溝に平行リンクの一部を入り込ませるとともに荷受台を平行リンクに重ね合わせる姿勢にすることができるようにしたことを特徴とするものである。
【０００７】
これにて、搬送時に上リンクと伸縮部材を連結させたままにしておくことができ、搬送後の組み付け作業が非常に容易になる。請求項４では、車体に取り付けうる支持フレームの左右端部に取付部材を固定し、前記各取付部材に上リンクと伸縮部材とからなる平行リンクを駆動手段にて上下回動可能に設け、前記平行リンクの端部に連結リンクと荷受台とを連結シャフトで軸支し、更に荷受台を前記連結リンクに連結ピンにて連結するようにした荷受台昇降装置において、前記上リンクと伸縮部材の各端部を連結リンクにて連結して、上リンクと伸縮部材とが平行状態を保持できるようになっており、前記荷受台の基部側に前記平行リンクの一部が入り込める切り欠き溝を形成し、荷受台昇降装置を搬送する際には、前記荷受台に対する連結ピンを外して、前記連結シャフトを中心に荷受台を平行リンクの上方まで回動させ、前記切り欠き溝に平行リンクの一部を入り込ませるとともに荷受台の一部を荷受台昇降装置の任意の部材にて支持する状態にすることができるようにしたことを特徴とするものである。
【０００８】
これにて、前記効果とともに搬送姿勢で荷受台を支持するための余分な部材を不要にすることができる。請求項５では、前記荷受台昇降装置の任意の部材を取付ブラケットとしたことを特徴とするものである。これにて、前記効果とともに車両への取付作業が取付ブラケットの存在にて迅速に行うことができ、作業の効率化が図れる。
【０００９】
請求項６では、前記荷受台昇降装置の任意の部材を取付部材もしくは支持フレームとしたことを特徴とするものである。これにて、搬送時に取付ブラケットを外して行うような場合でも、荷受台を支持するための余分な部材を必要とすることなく搬送姿勢を保持させることができる。また、取付ブラケットの高さが取付部材等より低い場合にも同様の効果を発揮させることが可能となる。
【００１０】
請求項７では、前記荷受台昇降装置の任意の部材を平行リンクとしたことを特徴とするものである。これにて、平行リンクの起立角を大きくすることができ、平行リンクの投影長さが短くなるので、平行リンク側を搭載させる搬送パレットの上面積が小さくてすみ、搬送パレットが小さくなることから搬送パレットを安価に製作することができるとともに搬送パレットの保管スペースを小さくすることができる。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。図１は荷受台昇降装置を車両に装備した全体図を示すものである。図６は荷受台昇降装置を搬送状態にして搬送パレットに搭載した状態を示すものである。まず荷受台昇降装置１について説明すると、２は車両３の幅と同程度の長さの支持フレームで、該支持フレーム２は断面ボックス状の２本の部材を上下に一体状に重ねた構造になっており、下の部材の中央は図示していないが切り欠き除去され、車両３に設けられるスペアタイヤ（図示せず）の一部が入り込めるようになっている。
【００１２】
前記支持フレーム２の両端部にはそれぞれ後方（図２右側）に延びるボックス状の連結部材４と上方に延びる平板状の取付部材５が固定されている。前記連結部材４の上面には前後一対の取付ブラケット６が立設され、この取付ブラケット６を車両３の車体７に固定することにより支持フレーム２を車体７に固定することができるようになっている。前記取付部材５には図３に示すように揺動リンク８の上部が軸支され、この揺動リンク８の中間部に上リンク９の基部を軸支し、揺動リンク８の下部に上リンク９を上下揺動させる駆動手段である昇降シリンダ１０の端部を軸支している。また、支持フレーム２の端部には別個の取付部材５を介して伸縮部材である起立シリンダ１１の基部が上リンク９より下方でかつ外側となるように軸支されており、前記上リンク９と起立シリンダ１１とにて平行リンク１２を構成するようになっている。前記上リンク９は左右一対のリンク板を一体化させた上リンク本体９Ａと上リンク本体９Ａの先部の一側面に溶接した１枚板の上リンク補助部材９Ｂとからなっている。また、前記上リンク本体９Ａの先端で左右一対の上リンク本体９Ａ間に丸パイプ状の連結部材１３が連結されている。１４は揺動リンク８が所定以上時計方向に揺動しないように規制するためのストッパで、取付部材５に設けてある。１５は上リンク９の上リンク本体９Ａ間に設けた規制部材で、該規制部材１５は取付部材５に当接して平行リンク１２の所定以上の上方回動を規制するようになっている。
【００１３】
前記上リンク９と起立シリンダ１１の先部は、図４に示すように後述する荷受台の一部に軸支されており、それにより荷受台は水平状態を保持できるようになっている。１６は荷受台昇降装置１の一部をなす荷受台である。前記荷受台１６は上面を平坦にして荷物を載せやすくし、下面には補強のための補強フレーム１６Ａが左右一対固定されている。また、前記荷受台１６の基部には荷受台１６の一部をなす補強桁１７が断面逆Ｌ字形で幅方向に形成され、上部は平坦部１７Ａにして荷受面の一部をなし、下部１７Ｂの外側は補強フレーム１６Ａの取付面を形成し、下部１７Ｂの内側には補強部材１８が取り付けられている。
【００１４】
前記補強部材１８の上部には前記上リンク９の端部が軸支され、下部には起立シリンダ１１の端部が軸支されている。前記上リンク９の軸支点は連結シャフト１９を貫通させ、連結シャフト１９にキープレートを係合させて固定することにより荷受台１６を回動可能に支持している。前記起立シリンダ１１の軸支点は、図４および図５に示すように連結ピン２０が貫通され、連結ピン２０の端部に形成された孔２１に抜け止めピン２２を差し込み、その抜け止めピン２２をボルト２３にて補強部材１８に固定することにより連結ピン２０が抜けないようになっている。すなわち、ボルト２３を外して抜け止めピン２２を抜くことにより連結ピン２０を簡単に外すことができるようになっている。
【００１５】
前記補強桁１７の平坦部１７Ａには、図１１のように切り欠き溝２４が形成され、荷受台１６を水平状態から約１８０度上方回動させた際、すなわち平行リンク１２の上方に重ねる方向に回動させた際に上リンク９の一部すなわち上リンク補助部材９Ｂが前記切り欠き溝２４に入り込んで荷受台１６の回動を邪魔しないようになっている。ところで、前記切り欠き溝２４は荷受台昇降装置１にて積み卸しされる荷物が通過する位置に形成されているが、この切り欠き溝２４の幅は上リンク補助部材９Ｂの厚みより幾分大きい程度のものなので荷物特にコンテナ等のキャスタが入り込むことはない。
【００１６】
次に取付ブラケット６と荷受台１６との位置関係について説明すると、前記取付ブラケット６の上端は水平になっており、荷受台１６を昇降途中の所定の位置（図１５）で停止させ、その状態で約１８０度上方回動させると図６の如く荷受台１６が反転した状態で取付ブラケット６の上端に当接し、荷受台１６が略水平状態で支持されるようになっている。ところで、荷受台１６を昇降途中の所定の位置で停止させるのは、任意の治具にて位置合わせをして決めるようになっている。
【００１７】
２５は突入防止用のバンパで、該バンパ２５は図５の如く左右の平行リンク１２が通過できるように３分割されており、中央のバンパ２５は前記連結部材４の端部に取り付けられ、左右のバンパ２５は支持フレーム２から突出させたバンパ用ステー２６に取り付けられている。２７は荷受台昇降装置１を搬送するための搬送パレットで、該搬送パレット２７は荷受台昇降装置１の製造場所から荷受台昇降装置１を車両３に取り付ける架装場所まで搬送させるものである。前記搬送パレット２７は図１４および図１５に示すように、パレット本体２７Ａと受け支柱２７Ｂとホーク孔２７Ｃとからなっている。前記パレット本体２７Ａは平板状で長方形を成し、上面積は支持フレーム２と同程度の横幅で平行リンク１２と同程度の縦幅を有し、パレット本体２７Ａの上面は支持フレーム２側を支持する平坦状の積載面を有している。前記受け支柱２７Ｂはパレット本体２７Ａ上の一側方側に近い位置で立設され、受け支柱２７Ｂの上端に断面半円弧状の受け部２７Ｄが形成されており、前記受け部２７Ｄの高さ位置は、荷受台１６を約１８０度回動させて取付ブラケット６に当接させた状態で受け部２７Ｄにて連結部材１３を支持したとき支持フレーム２および荷受台１６が略水平状態になるような位置になっている。前記ホーク孔２７Ｃはホークリフトのホーク２８を差し込んで搬送パレット２７を移動させるためのもので、パレット本体２７Ａの受け支柱２７Ｂ側の側面に開口され貫通するようになっている。
【００１８】
図１７乃至図２０は他の実施の形態で、支持フレーム２の一端側上部に荷受台昇降装置１の一部である動力装置用ボックス２９をボルト３０にて固定し、この動力装置用ボックス２９には駆動手段である昇降シリンダ１０と起立シリンダ１１を作動させるための動力装置（図示せず）が収容されている。前記ボックス２９の上面は平坦で、取付ブラケット６の上端より幾分高くなるようになっている。これにより、連結シャフト１９を中心に荷受台１６を約１８０度回動させると荷受台１６が前記ボックス２９に当接して荷受台１６を支持することができるようになっている。かかる構造にすれば、動力装置および動力装置用ボックス２９を荷受台昇降装置１の一部として一体化したままで搬送することができるので、駆動手段である昇降シリンダ１０等との配管の分離・接続の作業を省略することができる。
【００１９】
図２１は他の実施の形態で、取付部材５の上端を平坦にして、連結シャフト１９を中心に荷受台１６を約１８０度回動させると荷受台１６が前記取付部材５の上端に当接もしくはゴム等の緩衝部材を介して支持されるようになっている。かかる構造にすれば、取付ブラケット６や動力装置用ボックス２９が取り付けられていない状態、例えば取付ブラケット６は先に車体７側に溶接する必要がある場合や動力装置は破損防止の観点から別途手段にて搬送を必要とする場合があり、そのような場合にも、余分な部材を必要とすることなく荷受台１６を回動させて取付部材５にて略水平状態にて支持させることができる。
【００２０】
図２２乃至図２４は他の実施の形態で、支持フレーム２の中央にＩ型の補助部材３０を立設して、補助部材３０の上支持部３０Ａで荷受台１６を約１８０度回動させたとき荷受台１６を支持するようになっている。すなわち、荷受台１６を支持フレーム２に間接的に支持できるようになっている。前記補助部材３０の下支持部３０Ｂは支持フレーム２の上面に当接させ、支持フレーム２の下面に当接させた当て板３１との間にボルト３２とナット３３にて連結し、ボルト３２・ナット３３を締め付けていくことにより支持フレーム２を挟圧して、補助部材３０を支持フレーム２に固定するようになっている。かかる構造にすれば、本来的に大きな強度を有する支持フレーム２にて荷受台１６を支持することになるので、取付ブラケット６や取付部材５に余分な負荷が作用することが無くなり、取付部材５等に対して荷受台１６を支持するためだけに余分な強度アップをする必要が無くなる。
【００２１】
図２５は他の実施の形態で、上リンク９の一部に支持部９Ｃを形成し、荷受台１６を約１８０度回動させたとき荷受台１６を上リンク９の支持部９Ｃにて荷受台１６を略水平状態にて支持できるようにしたものである。かかる構造によれば、上リンク９を充分上方に回動させた状態で搬送状態を形成させることができるので、平行リンク１２の投影長さが短くなり、搬送パレット２７の上面積が小さくて済むようになる。
【００２２】
図２６および図２７は他の実施の形態で、上リンク９と起立シリンダ１１の各端部を連結リンク３４にて連結して上リンク９と起立シリンダ１１とが平行状態を保持できるようになっている。一方、荷受台１６の補強部材３５には前記上リンク９と連結リンク３４とを軸支している連結シャフト１９が貫通され、連結シャフト１９を中心に荷受台１６が回動できるようになっている。また、連結リンク３４の下部には当接部３６を形成し、荷受台１６の補強桁１７が当接部３６に当接することにより荷受台１６が水平状態を保持されるようになっている。更に荷受台１６を上方に回動させると、荷受台１６が当接部３６から離れ、連結シャフト１９を中心に荷受台１６が回動し、図２７の状態になるようになっている。その際、荷受台１６の切り欠き溝２４に上リンク９の一部が入り込むようになっている。
【００２３】
図２８および図２９は他の実施の形態で、上リンク９と起立シリンダ１１の各端部を連結リンク３７にて連結して上リンク９と起立シリンダ１１とが平行状態を保持できるようになっている。一方、荷受台１６の補強部材３８には前記上リンク９と連結リンク３７とを軸支している連結シャフト１９が貫通され、連結シャフト１９を中心に荷受台１６が回動できるようになっている。また、連結リンク３７と補強部材３８との間には連結ピン３９が挿通され、この連結ピン３９にて荷受台１６を連結リンク３７に一体状に結合するようになっている。前記連結ピン３９は抜け止めピンおよびボルトにて固定されており、荷受台１６を水平状態に保持できるようになっている。次に荷受台１６を上方に回動させる場合には前記連結ピン３９を外し、荷受台１６を回動させることにより平行リンク１２の上方まで回動させることができる。その際、荷受台１６の切り欠き溝２４に平行リンク１２の一部が入り込むことにより荷受台１６の回動を阻害しないようになっている。
【００２４】
図３０乃至図３２は搬送パレットの他の実施例で、パレット本体２７Ａの上で一側方には受け部２７Ｄを有する受け支柱２７Ｂを立設し、他側方には平坦な受け部２７Ｆおよびガイド部２７Ｇを有する受け部材２７Ｅを立設し、荷受台昇降装置１を載せるときには、上リンク９に設けた連結部材１３を前記受け支柱２７Ｂの受け部２７Ｄにて支持し、荷受台１６を受け部材２７Ｅの受け部２７Ｆにて支持するようになっている。また、受け部材２７Ｅは支持フレーム２と平行リンク１２とに囲まれた位置に配置されていることから、荷受台昇降装置１を搬送パレット２７に載せる際は受け部材２７Ｅのガイド部２７Ｇにて支持フレーム２を搬送パレット２７の所定の位置にガイドし、完了後は受け部材２７Ｅが支持フレーム２や平行リンク１２等と干渉して荷受台昇降装置１のずれを規制することができるようになっている。
【００２５】
尚、実施の形態では、昇降シリンダを左右の各上リンクに設けた構造になっているが、昇降シリンダを１本にして左右の平行リンクの間に配置して左右に延びた回転軸を介して平行リンクに回動力を伝えるようにしても同様の作用効果を有することができる。また、実施の形態では荷受台と上リンクと連結リンクとを１本の連結シャフトにて一体状に連結された構造になっているが、荷受台は単独で上リンクに軸支もしくは連結リンクに軸支させるようにしてもよい。その場合には、連結シャフトは別個に取り付けることになる。
【００２６】
更に、実施の形態では荷受台昇降装置としてバンパを支持フレームに設けた内容になっているが、バンパは必ずしも支持フレームに取り付ける必要はなく、荷受台昇降装置とは別個に車体から張り出した支持部材に取り付けるようにすることも可能である。本発明は前記の如き構成で、次に作用について説明する。
【００２７】
まず荷受台昇降装置１を製造場所にて製造し、荷受台昇降装置１の作動を確認した後搬送パレット２７に搭載する。搭載手順はまず荷受台１６を所定の位置まで上昇させて停止させ、その状態でクレーン等にて荷受台昇降装置１を吊り下げ、荷受台昇降装置１の下方に搬送パレット２７を置く（図１４）。この場合、荷受台１６を水平状態にしているが、起立シリンダ１１を伸張させて荷受台１６を起立させた状態で吊り下げるようにしてもよい。
【００２８】
前記図１４の状態から荷受台昇降装置１を矢印の方向に下降させて、揺動リンク８の下端もしくは昇降シリンダ１０の下端をパレット本体２７Ａの積載面に当接させるとともに上リンク９側の連結部材１３を受け支柱２７Ｂの受け部２７Ｄに当接させる（図１５）。その後、起立シリンダ１１と補強部材１８とを軸支している連結ピン２０を抜く。すなわち、図５の如くボルト２３を補強部材１８から外し、抜け止めピン２２を連結ピン２０から引き抜き、連結ピン２０を補強部材１８および起立シリンダ１１から外し、図１５一点鎖線のように起立シリンダ１１の端部をパレット本体２７Ａの積載面まで降ろす。
【００２９】
この状態で、荷受台１６を、上リンク９と荷受台１６側の補強部材１８とを連結する連結シャフト１９の軸支点を中心に人力もしくはクレーンにて約１８０度上方回動させて、荷受台１６を平行リンク１２側に重ねた状態にて取付ブラケット６の上端に当接させる（図６）。その際、荷受台１６基部の補強桁１７の上部が上リンク９の特に上リンク補助部材９Ｂに干渉しようとするが、補強桁１７には切り欠き溝２４が形成されているので、その切り欠き溝２４に上リンク補助部材９Ｂが入り込み、荷受台１６の回動を阻害することがない。
【００３０】
図６の状態から任意の手段にて荷受台昇降装置１を搬送パレット２７に固縛し、その状態でホークリフトのホーク２８を搬送パレット２７のホーク孔２７Ｃに差し込み、搬送パレット２７を持ち上げて輸送手段である貨物車等に積み込む。その際、荷受台昇降装置１は受け支柱２７Ｂ側において搬送パレット２７からの飛び出し量が小さく、搬送パレット２７のホーク孔２７Ｃが受け支柱２７Ｂ側に開口しているので、ホークリフトのホーク２８を搬送パレット２７の端部まで近づけることができる。それにより、ホーク２８をホーク孔２７Ｃに差し込んださいホーク２８を荷受台昇降装置１の重心位置を超える位置まで十分に差し込むことができ、安定した状態でホークリフトでの移動が行える。
【００３１】
貨物車等への積み込みが完了すると、貨物車等は荷受台昇降装置１の架装場所まで輸送する。架装場所に到着すると、搬送パレット２７を降ろした後荷受台昇降装置１を搬送パレット２７から昇降可能な台車（図示せず）に乗せ代える。台車に乗せた後クレーン等にて荷受台１６を回動させて水平状態もしくは起立状態にし、クレーンにて保持する。その状態で、起立シリンダ１１の端部を持ち上げるとともに荷受台１６を展開して荷受台１６の補強部材１８と起立シリンダ１１との位置合わせを行い、連結ピン２０にて起立シリンダ１１と荷受台１６とを水平状態に連結させる。その際、荷受台１６は上リンク９に軸支されているので、起立シリンダ１１と荷受台１６との位置合わせが非常に容易となる。
【００３２】
平行リンク１２側と荷受台１６側との連結が完了したら台車を移動させて、荷受台昇降装置１を車両３の後部取付位置に合わせ、取付ブラケット６を車体７に固定する。これにて荷受台昇降装置１の架装は完了する。荷受台昇降装置１が架装された車両３にて荷物の積み卸しを行う場合は、図１および図２に示すように二点鎖線の状態から起立シリンダ１１を縮小させて荷受台１６を水平状態にし（図１実線）、その後昇降シリンダ１０にて平行リンク１２を上下動させて荷受台１６を昇降させる。特に荷受台１６が下降して荷受台１６の一部が接地したときは、更に昇降シリンダ１０を縮小させると、図３の如く揺動リンク８がストッパ１４から離れる方向に揺動して荷受台１６を図２の如く傾斜させ、キャスタ付きカート等の荷受台１６への積み込み作業が容易になるようになっている。また、荷受台１６の昇降途中にて荷受台１６を幾分傾斜状態にしたい場合（例えば、所定の高さのプレットホームに荷受台の先端を合わせる場合）には起立シリンダ１１の伸縮にて調整するようになっている。また、積み卸し作業が完了して車両３が走行する場合には、昇降シリンダ１０にて荷受台１６を最上昇させ、起立シリンダ１１を伸張させることにより、荷受台１６が約９０度回動して図１の二点鎖線の如く起立格納状態にする。
【００３３】
【発明の効果】
以上の如く本発明の請求項１では、伸縮部材を有する平行リンクの上リンクと荷受台を軸支し、荷受台基部の一部に切り欠き溝を形成し、荷受台昇降装置を搬送する際に荷受台を平行リンクの上方まで回動させることができるようにしたので、荷受台を平行リンク側に接続した状態で搬送することができ、搬送前後の作業が容易になるとともに保管時および搬送時の余分なスペースを無くすことができる。また、荷受台を起立させるための伸縮部材を平行リンクの一部に兼用させたので、装置全体を安価なものにすることができる。
【００３４】
請求項２では、荷受台昇降装置の搬送姿勢において、荷受台を荷受台昇降装置の任意の部材にて支持するようにしたので、前記効果とともに搬送姿勢で荷受台を支持するための余分な部材を不要にすることができる。請求項３では、上リンクと伸縮部材の端部を連結リンクにて連結し、荷受台を上リンクもしくは連結リンクに軸支するとともに荷受台の一部を連結リンクに軸支もしくは当接させて水平状態にし、更に荷受台の一部に切り欠き溝を設けたので、荷受台昇降装置の搬送時に上リンクと伸縮部材とを連結させたままにしておくことができ、搬送後の組み付けが非常に容易となる。
【００３５】
請求項４では、荷受台を平行リンクの上方に回動させた際、荷受台を荷受台昇降装置の一部にて支持するようにしたので、搬送姿勢で荷受台を支持するための余分な部材を不要にすることができる。請求項５では、搬送姿勢で荷受台の支持を荷受台昇降装置の一部である取付ブラケットにて行うようにしたので、荷受台昇降装置の車両への取付作業が取付ブラケットの存在にて迅速に行うことができ、作業の効率化を図ることができる。
【００３６】
請求項６では、搬送姿勢で荷受台の支持を荷受台昇降装置の一部である取付部材もしくは支持フレームにて行うようにしたので、搬送時に取付ブラケットを外して行う場合でも荷受台を支持するための余分な部材を必要とすることなく搬送姿勢を保持させることができる。請求項７では、搬送姿勢で荷受台の支持を荷受台昇降装置の一部である平行リンクにて行うようにしたので、平行リンクの起立角を大きくして平行リンクの投影長さを短くすることができ、搬送パレットの搭載面積が小さくて済むので、搬送パレットを安価に製作することができる。また搬送パレットの保管スペースも少なくて済む。
【図面の簡単な説明】
【図１】車両に荷受台昇降装置を架装した全体図である。
【図２】荷受台を地面に接地させた状態図である。
【図３】平行リンク基部の拡大図である。
【図４】平行リンクと荷受台の連結部分の拡大図である。
【図５】図４のＡ−Ａ断面における組立図である。
【図６】荷受台昇降装置の搬送状態の全体図である。
【図７】図６のＢ−Ｂ図である。
【図８】図６のＣ−Ｃ図である。
【図９】図７のＤ−Ｄ断面図である。
【図１０】図７のＥ−Ｅ断面図である。
【図１１】荷受台の切り欠き溝部分の拡大斜視図である。
【図１２】荷受台水平状態での平行リンクと荷受台との連結部分の拡大断面図である。
【図１３】荷受台を１８０度回動させたときの平行リンクと荷受台との連結部分の拡大断面図である。
【図１４】荷受台昇降装置を搬送パレットに積載する組付図である。
【図１５】荷受台昇降装置を搬送パレットに積載した状態図である。
【図１６】図１５のＦ―Ｆ図である。
【図１７】他の実施の形態における荷受台昇降装置の搬送状態図である。
【図１８】図１７のＦ―Ｆ図である。
【図１９】図１８の荷受台を展開した状態の全体図である。
【図２０】図１９のＨ−Ｈ断面図である。
【図２１】他の実施の形態における荷受台昇降装置の搬送状態図である。
【図２２】他の実施の形態における荷受台昇降装置の搬送状態図である。
【図２３】図２２にて荷受台を展開した全体図である。
【図２４】図２３のＩ−Ｉ断面図である。
【図２５】他の実施の形態における荷受台昇降装置の搬送状態図である。
【図２６】他の実施の形態における平行リンクと荷受台との連結部分の拡大図である。
【図２７】図２６にて荷受台を回動させた状態の全体図である。
【図２８】他の実施の形態における平行リンクと荷受台との連結部分の拡大図である。
【図２９】図２８にて荷受台を回動させた状態の全体図である。
【図３０】他の実施の形態における荷受台昇降装置の搬送状態図である。
【図３１】図３０の荷受台昇降装置を搬送パレットに積載する際の組付図である。
【図３２】図３１のＪ―Ｊ図である。
【符号の説明】
１荷受台昇降装置
２支持フレーム
５取付部材
６取付ブラケット
９上リンク
１０昇降シリンダ
１１起立シリンダ
１２平行リンク
１６荷受台
１８補強部材
１９連結シャフト
２０連結ピン
２４切り欠き溝
２７搬送パレット[0001]
BACKGROUND OF THE INVENTION
The present invention makes it possible to carry out the conveying posture with a simple operation when conveying the single cargo receiving device lifting device, and also to perform the simple operation when attaching the conveyed cargo receiving device lifting device to the vehicle. The present invention relates to a load receiving table lifting device.
[0002]
[Prior art]
Generally, when assembling the load receiving platform lifting device to the vehicle, the load receiving platform lifting device is transported from the manufacturing location of the load receiving platform lifting device to the mounting location where the mounting is performed on the vehicle, and the assembly work is performed at the mounting location where the mounting is performed. To do and complete. By the way, the conveyance attitude | position of the conventional load receiving stand raising / lowering apparatus isolate | separates a parallel link side and a load receiving stand, and each makes it convey with a separate conveyance pallet. The reason is that the load receiving platform is structured to be rotatable from the horizontal state to the standing state, but the parallel link and the receiving platform are connected in any state of the horizontal state, the standing state, or the intermediate state. If you try to carry it as it is, the width and height of the carrying posture will become very large, and a large dead space will be generated, resulting in waste during transportation. .
[0003]
[Problems to be solved by the invention]
However, when the parallel link side and the load receiving table are separated and transported as described above, first, separation work is required in the process before the transport, and the alignment between the parallel link side and the load receiving base is very much in the process after the transport. There was a drawback of becoming complicated. In addition, there are two transported objects during transport, and there is a problem that extra space is required for storage before transport and storage space during transport. SUMMARY OF THE INVENTION Accordingly, the present invention provides a load receiving platform lifting / lowering device that facilitates work before and after transfer of the load receiving platform lifting device and can reduce the storage space before transfer and the transport space during transfer. is there.
[0004]
[Means for Solving the Problems]
In the present invention, in the first aspect of the present invention, mounting members are fixed to the left and right ends of the support frame that can be mounted on the vehicle body, and each of the mounting members is provided with a parallel link composed of an upper link and a telescopic member so as to be vertically rotatable, In the load receiving platform lifting apparatus capable of vertically moving the load receiving platform in a horizontal state by pivotally supporting the upper link of the link and each end of the elastic member on the load receiving platform and rotating the parallel link up and down by a driving means. When forming a notch groove in which a part of the parallel link can enter on the base side of the base, and further enabling the connection pin connecting the elastic member and the load receiving base to be attached and detached, By removing the connecting pin, the load receiving table is rotated around the pivot point of the load receiving table and the upper link, and a part of the parallel link is inserted into the notch groove so that the load receiving table is stacked above the parallel link. Together It is characterized in that it has to be able to state.
[0005]
Thereby, since it can convey in the state which connected the load receiving stand to the parallel link side, the operation | work before and behind conveyance becomes easy, and the extra space at the time of storage and conveyance can be eliminated. In addition, since the elastic member for raising the load receiving table is also used as a part of the parallel link, the entire apparatus can be made inexpensive. According to a second aspect of the present invention, mounting members are fixed to the left and right end portions of the support frame that can be mounted on the vehicle body, and each of the mounting members is provided with a parallel link composed of an upper link and a telescopic member so as to be rotatable up and down. In a load receiving and lowering device capable of lifting and lowering the load receiving table in a horizontal state by pivotally supporting each end of the link and the expansion and contraction member on the load receiving table and rotating the parallel link up and down by a driving means, the base of the load receiving table A notch groove into which a part of the parallel link can enter is formed on the side, and a connecting pin that connects the expansion and contraction member and the load receiving base can be attached and detached. By rotating the load receiving table to the upper side of the parallel link around the pivot point of the load receiving table and the upper link, a part of the parallel link is inserted into the notch groove and a part of the load receiving table is received. Stand lifting device It is characterized in that it has to be able to state that supported by meaning member.
[0006]
With this, it is possible to eliminate the need for an extra member for supporting the load receiving stand in the transport posture together with the above effect. According to a third aspect of the present invention, mounting members are fixed to the left and right ends of the support frame that can be mounted on the vehicle body, and parallel links composed of an upper link and an expansion / contraction member are provided on each mounting member so as to be vertically rotatable by driving means, Link connected to the end of the parallel link And the receiving platform with a connecting shaft Axis support, and also a receiving platform To the link In the load receiving platform lifting device that is connected by a connecting pin, The upper link and each end of the elastic member are connected by a connecting link so that the upper link and the elastic member can maintain a parallel state, A notch groove into which a part of the parallel link can enter is formed on the base side of the load receiving table, and when conveying the load receiving device lifting device, a connecting pin for the load receiving table is provided. Remove And The connecting shaft The load receiving platform is rotated to the upper side of the parallel link around the center, and a part of the parallel link is inserted into the notch groove and the load receiving platform can be placed on the parallel link. To do.
[0007]
As a result, the upper link and the elastic member can be kept connected at the time of transportation, and the assembling work after transportation becomes very easy. According to a fourth aspect of the present invention, mounting members are fixed to the left and right end portions of the support frame that can be mounted on the vehicle body, and parallel links composed of an upper link and an expansion / contraction member are provided on each mounting member so as to be vertically rotatable by driving means, Link connected to the end of the parallel link And the receiving platform with a connecting shaft Axis support, and also a receiving platform To the link In the load receiving platform lifting device that is connected by a connecting pin, The upper link and each end of the elastic member are connected by a connecting link so that the upper link and the elastic member can maintain a parallel state, A notch groove into which a part of the parallel link can enter is formed on the base side of the load receiving table, and when conveying the load receiving device lifting device, a connecting pin for the load receiving table is provided. Remove And The connecting shaft Rotate the load receiving table to the upper part of the parallel link centering on the center, and insert a part of the parallel link into the notch groove and support a part of the load receiving table by an arbitrary member of the load receiving lift device. It is characterized by being able to do so.
[0008]
With this, it is possible to eliminate the need for an extra member for supporting the load receiving stand in the transport posture together with the above effect. According to a fifth aspect of the present invention, any member of the load receiving table lifting device is a mounting bracket. As a result, the mounting operation to the vehicle can be quickly performed in the presence of the mounting bracket together with the above effects, and the efficiency of the operation can be improved.
[0009]
According to a sixth aspect of the present invention, any member of the load receiving table lifting device is an attachment member or a support frame. Thus, even when the mounting bracket is removed during transportation, the transportation posture can be maintained without requiring an extra member for supporting the load receiving platform. Further, the same effect can be exhibited even when the height of the mounting bracket is lower than that of the mounting member or the like.
[0010]
According to a seventh aspect of the present invention, an arbitrary member of the load receiving table lifting device is a parallel link. As a result, the vertical angle of the parallel link can be increased, and the projection length of the parallel link can be shortened. Therefore, the area of the transport pallet on which the parallel link side is mounted can be reduced, and the transport pallet can be reduced. The conveyance pallet can be manufactured at a low cost and the storage space for the conveyance pallet can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an overall view in which a vehicle is equipped with a cargo receiving platform lifting apparatus. Figure 6 Shows a state in which the load receiving platform elevating device is in the transport state and mounted on the transport pallet. First, the load receiving platform lifting / lowering device 1 will be described. Reference numeral 2 denotes a support frame having a length approximately the same as the width of the vehicle 3, and the support frame 2 has a structure in which two members each having a box-like cross section are vertically stacked. The center of the lower member is not shown, but is cut away and a part of a spare tire (not shown) provided in the vehicle 3 can enter.
[0012]
A box-shaped connecting member 4 extending rearward (right side in FIG. 2) and a plate-shaped mounting member 5 extending upward are fixed to both ends of the support frame 2. A pair of front and rear mounting brackets 6 are erected on the upper surface of the connecting member 4, and the support frame 2 can be fixed to the vehicle body 7 by fixing the mounting bracket 6 to the vehicle body 7 of the vehicle 3. Yes. As shown in FIG. 3, the upper portion of the swing link 8 is pivotally supported on the mounting member 5, the base portion of the upper link 9 is pivotally supported at the middle portion of the swing link 8, and the upper portion of the swing link 8 is An end portion of a lifting cylinder 10 which is a driving means for swinging the link 9 up and down is pivotally supported. In addition, a base portion of an upright cylinder 11 that is a telescopic member is pivotally supported at an end portion of the support frame 2 via a separate attachment member 5 so as to be below and above the upper link 9. The upright cylinder 11 constitutes a parallel link 12. The upper link 9 includes an upper link main body 9A in which a pair of left and right link plates are integrated, and a single plate upper link auxiliary member 9B welded to one side surface of the front portion of the upper link main body 9A. Further, a round pipe-like shape is formed between the pair of left and right upper link bodies 9A at the tip of the upper link body 9A. Linking The member 13 is connected. A stopper 14 is provided on the mounting member 5 for restricting the swing link 8 from swinging clockwise more than a predetermined amount. Reference numeral 15 denotes a restricting member provided between the upper link main bodies 9A of the upper link 9. The restricting member 15 abuts against the attachment member 5 to restrict the upward rotation of the parallel link 12 by a predetermined amount or more.
[0013]
As shown in FIG. 4, the upper link 9 and the tip portion of the upright cylinder 11 are pivotally supported by a part of a load receiving table, which will be described later, so that the load receiving table can maintain a horizontal state. Reference numeral 16 denotes a load receiving table that forms part of the load receiving table lifting device 1. The load receiving table 16 has a flat upper surface to facilitate loading of the load, and a pair of left and right reinforcing frames 16A for reinforcement are fixed to the lower surface. In addition, a reinforcing girder 17 forming a part of the load receiving table 16 is formed in the width direction in the reverse L-shaped cross section at the base portion of the load receiving table 16, and the upper portion forms a flat portion 17A to form a part of the load receiving surface, and the lower portion 17B. The outer side forms a mounting surface of the reinforcing frame 16A, and the reinforcing member 18 is mounted inside the lower portion 17B.
[0014]
The upper end of the upper link 9 is pivotally supported on the upper part of the reinforcing member 18, and the end of the upright cylinder 11 is pivotally supported on the lower part. A shaft fulcrum of the upper link 9 penetrates the connecting shaft 19 and engages and fixes the key plate to the connecting shaft 19 to support the load receiving table 16 in a rotatable manner. As shown in FIGS. 4 and 5, the shaft pin of the upright cylinder 11 is penetrated by the connecting pin 20, and the retaining pin 22 is inserted into the hole 21 formed at the end of the connecting pin 20. Is fixed to the reinforcing member 18 with a bolt 23 so that the connecting pin 20 does not come off. That is, the connecting pin 20 can be easily removed by removing the bolt 23 and removing the retaining pin 22.
[0015]
A notch groove 24 is formed in the flat portion 17A of the reinforcing girder 17 as shown in FIG. 11, and when the load receiving table 16 is rotated upward by about 180 degrees from the horizontal state, that is, in the direction of overlapping the parallel links 12. When the upper link 9 is rotated, a part of the upper link 9, that is, the upper link auxiliary member 9B enters the notch groove 24 so as not to obstruct the rotation of the load receiving table 16. By the way, the notch groove 24 is formed at a position where a load loaded and unloaded by the load receiving platform lifting / lowering device 1 passes. The width of the notch groove 24 is somewhat larger than the thickness of the upper link auxiliary member 9B. Since it is about the size, no casters such as luggage can enter.
[0016]
Next, the positional relationship between the mounting bracket 6 and the cargo cradle 16 will be described. The upper end of the mounting bracket 6 is horizontal, and the cargo cradle 16 is stopped at a predetermined position (FIG. 15) during ascending and descending. As shown in FIG. 6, the load receiving table 16 is in contact with the upper end of the mounting bracket 6 so that the load receiving table 16 is supported in a substantially horizontal state. By the way, stopping the load receiving stand 16 at a predetermined position during raising and lowering is determined by positioning with an arbitrary jig.
[0017]
25 is a bumper for preventing entry, and the bumper 25 is divided into three parts so that the left and right parallel links 12 can pass as shown in FIG. 5, and the central bumper 25 is attached to the end of the connecting member 4, The bumper 25 is attached to a bumper stay 26 protruding from the support frame 2. Reference numeral 27 denotes a transport pallet for transporting the load receiving table lifting device 1, and the transport pallet 27 transports the load receiving table lifting device 1 from a manufacturing place to a mounting place where the load receiving table lifting device 1 is attached to the vehicle 3. As shown in FIGS. 14 and 15, the transport pallet 27 includes a pallet main body 27A, a receiving column 27B, and a fork hole 27C. The pallet body 27A is flat and has a rectangular shape, and the upper area has the same horizontal width as the support frame 2 and the same vertical width as the parallel links 12. A Has a flat stacking surface that supports the support frame 2 side. The receiving column 27B is erected at a position close to one side on the pallet main body 27A, and a receiving part 27D having a semicircular cross section is formed at the upper end of the receiving column 27B. The height position of the receiving unit 27D When the connecting member 13 is supported by the receiving portion 27D in a state in which the load receiving table 16 is rotated about 180 degrees and brought into contact with the mounting bracket 6, the support frame 2 and the load receiving table 16 are in a substantially horizontal state. Is in position. Said Ho The fork hole 27C is for inserting the fork 28 of the forklift to move the transport pallet 27, and is opened and penetrated on the side surface of the pallet body 27A on the receiving column 27B side.
[0018]
17 to 20 show another embodiment, in which a power device box 29 that is a part of the load receiving platform elevating device 1 is fixed to the upper portion of one end side of the support frame 2 with a bolt 30, and this power device box 29 Accommodates a power unit (not shown) for operating the elevating cylinder 10 and the upright cylinder 11 as drive means. The upper surface of the box 29 is flat and is somewhat higher than the upper end of the mounting bracket 6. Thereby, when the load receiving table 16 is rotated about 180 degrees around the connecting shaft 19, the load receiving table 16 comes into contact with the box 29 and can support the load receiving table 16. With such a structure, the power unit and the power unit box 29 can be transported while being integrated as a part of the load receiving unit lifting / lowering device 1, so that the piping is separated from the lifting cylinder 10 or the like which is the driving means. Connection work can be omitted.
[0019]
FIG. 21 shows another embodiment. When the upper end of the mounting member 5 is flattened and the load receiving table 16 is rotated about 180 degrees around the connecting shaft 19, the load receiving table 16 comes into contact with the upper end of the mounting member 5. Alternatively, it is supported via a buffer member such as rubber. With such a structure, the mounting bracket 6 and the power device box 29 are not attached, for example, when the mounting bracket 6 needs to be welded to the vehicle body 7 first, or the power device is a separate means from the viewpoint of preventing damage. In such a case, the load receiving table 16 can be rotated and supported by the mounting member 5 in a substantially horizontal state without requiring an extra member. .
[0020]
FIG. 22 to FIG. 24 show another embodiment. An I-type auxiliary member 30 is erected at the center of the support frame 2 and the load receiving platform 16 is rotated about 180 degrees by the upper support portion 30A of the auxiliary member 30. The load receiving table 16 is supported at the time. That is, the load receiving table 16 can be indirectly supported by the support frame 2. The lower support portion 30B of the auxiliary member 30 is brought into contact with the upper surface of the support frame 2, and is connected to the abutting plate 31 in contact with the lower surface of the support frame 2 by bolts 32 and nuts 33. By tightening the nut 33, the support frame 2 is clamped to fix the auxiliary member 30 to the support frame 2. With such a structure, the load receiving table 16 is supported by the support frame 2 that inherently has high strength, so that no excessive load is applied to the mounting bracket 6 and the mounting member 5, and the mounting member 5. Therefore, it is not necessary to increase the strength only for supporting the load receiving table 16 with respect to the same.
[0021]
FIG. 25 shows another embodiment in which a support portion 9C is formed on a part of the upper link 9, and the load receiving platform 16 is received by the support portion 9C of the upper link 9 when the load receiving platform 16 is rotated about 180 degrees. The platform 16 can be supported in a substantially horizontal state. According to such a structure, since the transport state can be formed with the upper link 9 sufficiently rotated upward, the projection length of the parallel link 12 is shortened, and the upper area of the transport pallet 27 can be reduced. It becomes like this.
[0022]
FIG. 26 and FIG. 27 show another embodiment in which the upper link 9 and the upright cylinder 11 are connected by connecting links 34 so that the upper link 9 and the upright cylinder 11 can maintain a parallel state. ing. On the other hand, the connecting shaft 19 that pivotally supports the upper link 9 and the connecting link 34 is passed through the reinforcing member 35 of the receiving platform 16 so that the receiving platform 16 can be rotated around the connecting shaft 19. Yes. In addition, a contact portion 36 is formed in the lower portion of the connecting link 34, and the load receiving platform 16 is held in a horizontal state by the reinforcing girder 17 of the load receiving platform 16 contacting the contact portion 36. When the load receiving table 16 is further rotated upward, the load receiving table 16 is separated from the contact portion 36, and the load receiving table 16 is rotated around the connecting shaft 19 so as to be in the state shown in FIG. At that time, a part of the upper link 9 enters the notch groove 24 of the load receiving table 16.
[0023]
FIG. 28 and FIG. 29 show another embodiment, in which each end of the upper link 9 and the upright cylinder 11 is connected by a connecting link 37 so that the upper link 9 and the upright cylinder 11 can maintain a parallel state. ing. On the other hand, the connecting shaft 19 that pivotally supports the upper link 9 and the connecting link 37 is passed through the reinforcing member 38 of the receiving platform 16 so that the receiving platform 16 can be rotated around the connecting shaft 19. Yes. Further, a connecting pin 39 is inserted between the connecting link 37 and the reinforcing member 38, and the load receiving platform 16 is integrally connected to the connecting link 37 by the connecting pin 39. The connecting pin 39 is fixed by a retaining pin and a bolt so that the load receiving platform 16 can be held in a horizontal state. Next, when the load receiving table 16 is rotated upward, the connecting pin 39 is removed, and the load receiving table 16 is rotated so that it can be rotated above the parallel link 12. At that time, a part of the parallel link 12 enters the notch groove 24 of the load receiving table 16 so that the rotation of the load receiving table 16 is not hindered.
[0024]
30 to 32 show another embodiment of the transport pallet. On the pallet main body 27A, a receiving column 27B having a receiving portion 27D is erected on one side, and a flat receiving portion 27F on the other side. When the receiving member 27E having the guide portion 27G is erected and the load receiving table lifting / lowering device 1 is mounted, the connecting member 13 provided on the upper link 9 is supported by the receiving portion 27D of the receiving support column 27B, and the load receiving table 16 is received. It is supported by the receiving portion 27F of the member 27E. In addition, since the receiving member 27E is disposed at a position surrounded by the support frame 2 and the parallel link 12, when the load receiving table lifting device 1 is placed on the transport pallet 27, it is supported by the guide portion 27G of the receiving member 27E. The frame 2 is guided to a predetermined position on the transport pallet 27, and after completion, the receiving member 27E can interfere with the support frame 2, the parallel link 12 and the like, thereby restricting the shift of the load receiving platform lifting / lowering device 1. Yes.
[0025]
In the embodiment, the elevating cylinder is provided on each of the left and right upper links. However, the elevating cylinder is arranged between the left and right parallel links with a single elevating cylinder interposed through a rotating shaft extending left and right. Even if the rotational force is transmitted to the parallel links, the same effect can be obtained. In the embodiment, the load receiving table, the upper link, and the connecting link are integrally connected by a single connecting shaft. However, the load receiving table is independently connected to the upper link as a shaft support or a connecting link. It may be pivotally supported. In that case, the connecting shaft will be attached separately.
[0026]
Furthermore, in the embodiment, the bumper is provided on the support frame as the load receiving device lifting device, but the bumper does not necessarily have to be attached to the support frame, and the support member that protrudes from the vehicle body separately from the load receiving device lifting device. It is also possible to attach it to. The present invention is constructed as described above, and the operation will be described next.
[0027]
First, the loading platform lifting device 1 is manufactured at the manufacturing site, and after confirming the operation of the loading platform lifting device 1, it is mounted on the transport pallet 27. First, the loading platform 16 is raised to a predetermined position and stopped. In this state, the loading platform lifting device 1 is suspended by a crane or the like, and the transfer pallet 27 is placed below the loading platform lifting device 1 (FIG. 14). ). In this case, although the load receiving stand 16 is in a horizontal state, the upright cylinder 11 may be extended to suspend the load receiving stand 16 in a standing state.
[0028]
14 is lowered in the direction of the arrow so that the lower end of the swing link 8 or the lower end of the elevating cylinder 10 is brought into contact with the loading surface of the pallet main body 27A and the connection on the upper link 9 side. The member 13 is received and brought into contact with the receiving portion 27D of the support column 27B (FIG. 15). Thereafter, the connecting pin 20 that pivotally supports the upright cylinder 11 and the reinforcing member 18 is removed. That is, the bolt 23 is removed from the reinforcing member 18 as shown in FIG. 5, the retaining pin 22 is pulled out from the connecting pin 20, the connecting pin 20 is removed from the reinforcing member 18 and the upright cylinder 11, and the upright cylinder 11 is shown as shown by a one-dot chain line in FIG. Is lowered to the loading surface of the pallet body 27A.
[0029]
In this state, the load receiving table 16 is rotated upward by about 180 degrees by human power or a crane around the shaft fulcrum of the connecting shaft 19 that connects the upper link 9 and the reinforcing member 18 on the load receiving table 16 side. 16 is brought into contact with the upper end of the mounting bracket 6 in a state of being overlapped on the parallel link 12 side (FIG. 6). At that time, the upper portion of the reinforcing girder 17 at the base of the load receiving table 16 is the upper link 9. of In particular, the upper link auxiliary member 9B tries to interfere, but since the notch groove 24 is formed in the reinforcing girder 17, the upper link auxiliary member 9B enters the notch groove 24, and the load receiving platform 16 is rotated. There is no hindrance.
[0030]
From the state of FIG. 6, the loading platform elevating device 1 is secured to the transport pallet 27 by any means, and the fork 28 of the forklift is inserted into the fork hole 27 </ b> C of the transport pallet 27 in that state, and the transport pallet 27 is lifted for transport. It is loaded into a freight vehicle that is a means. At that time, the load receiving platform lifting / lowering device 1 has a small amount of protrusion from the transfer pallet 27 on the receiving column 27B side, and the fork hole 27C of the transfer pallet 27 is opened on the receiving column 27B side. The end of the pallet 27 can be approached. Thereby, when the fork 28 is inserted into the fork hole 27C, the fork 28 can be sufficiently inserted to a position exceeding the position of the center of gravity of the load receiving platform elevating device 1, and can be moved by the forklift in a stable state.
[0031]
When loading into the freight vehicle or the like is completed, the freight vehicle or the like is transported to the mounting position of the load receiving platform lifting / lowering device 1. When arriving at the mounting place, after the transport pallet 27 is lowered, the load receiving platform lifting / lowering device 1 is placed on a cart (not shown) that can be lifted / lowered from the transport pallet 27. After being placed on the carriage, the load receiving platform 16 is rotated by a crane or the like to be in a horizontal state or an upright state and is held by the crane. In this state, the end of the upright cylinder 11 is lifted and the load receiving table 16 is expanded to align the reinforcing member 18 of the load receiving table 16 with the upright cylinder 11, and the upright cylinder 11 and the load receiving table 16 are connected by the connecting pin 20. Are connected horizontally. At that time, since the load receiving table 16 is pivotally supported by the upper link 9, it is very easy to align the upright cylinder 11 and the load receiving table 16.
[0032]
When the connection between the parallel link 12 side and the cargo cradle 16 side is completed, the cart is moved, the cargo cradle lifting device 1 is aligned with the rear mounting position of the vehicle 3, and the mounting bracket 6 is fixed to the vehicle body 7. This completes the mounting of the load receiving table lifting device 1. As shown in FIGS. 1 and 2, when loading and unloading the cargo in the vehicle 3 on which the load receiving lift 1 is mounted. State of two-dot chain line Then, the standing cylinder 11 is reduced to bring the load receiving table 16 into a horizontal state (solid line in FIG. 1), and then the parallel link 12 is moved up and down by the lifting cylinder 10 to move the load receiving table 16 up and down. In particular, when the load receiving platform 16 is lowered and a part of the load receiving platform 16 is grounded, when the lifting cylinder 10 is further reduced, the swing link 8 swings away from the stopper 14 as shown in FIG. 16 is inclined as shown in FIG. 2 so that loading work onto a load receiving table 16 such as a cart with casters is facilitated. Further, when it is desired to make the load receiving table 16 in a slightly inclined state while the load receiving table 16 is being moved up and down (for example, when the tip of the load receiving table is aligned with a predetermined height of the pellet home), adjustment is performed by extending and retracting the standing cylinder 11. It is supposed to be. Further, when the unloading operation is completed and the vehicle 3 travels, the load receiving platform 16 is lifted up by the elevating cylinder 10 and the standing cylinder 11 is extended to rotate the load receiving platform 16 by about 90 degrees. Then, as shown in the two-dot chain line in FIG.
[0033]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the upper link of the parallel link having the elastic member and the load receiving platform are pivotally supported, the notch groove is formed in a part of the load receiving platform base, and the load receiving platform lifting device is transported. Since the load receiving platform can be rotated to the upper side of the parallel link, it can be transported with the load receiving table connected to the parallel link. Extra space can be eliminated. In addition, since the elastic member for raising the load receiving table is also used as a part of the parallel link, the entire apparatus can be made inexpensive.
[0034]
In claim 2, since the load receiving platform is supported by an arbitrary member of the load receiving platform lifting device in the transport posture of the load receiving platform lifting device, an extra member for supporting the load receiving platform in the transport posture together with the above effect Can be made unnecessary. In claim 3, the upper link and Elastic member The end of each is connected by a connecting link, the load receiving platform is pivotally supported by the upper link or the connecting link, and a part of the load receiving platform is pivoted or abutted on the connecting link to be in a horizontal state, and further a part of the load receiving platform. Since the notch groove is provided in the upper part, the upper link and the expansion / contraction member can be kept connected at the time of conveyance of the load receiving table lifting device, and the assembly after the conveyance becomes very easy.
[0035]
According to the fourth aspect of the present invention, when the load receiving table is rotated above the parallel link, the load receiving table is supported by a part of the load receiving table lifting device. A member can be made unnecessary. According to the fifth aspect of the present invention, since the load receiving platform is supported by the mounting bracket that is a part of the load receiving platform lifting device in the conveying posture, the mounting operation of the load receiving platform lifting device to the vehicle is quick due to the presence of the mounting bracket. It is possible to improve the work efficiency.
[0036]
In claim 6, the support of the load receiving table in the transport posture is a part of the load receiving table lifting device. Mounting member or support frame Therefore, even when the mounting bracket is removed during transport, the transport posture can be maintained without requiring an extra member for supporting the load receiving platform. In claim 7, the support of the load receiving table in the conveying posture is a part of the load receiving table lifting device. Parallel link Since the projection angle of the parallel link can be shortened by increasing the standing angle of the parallel link and the mounting area of the transport pallet can be reduced, the transport pallet can be manufactured at a low cost. it can. The storage space for the transport pallet is also small.
[Brief description of the drawings]
FIG. 1 is an overall view in which a load receiving table lifting device is mounted on a vehicle.
FIG. 2 is a state diagram in which the load receiving stand is grounded to the ground.
FIG. 3 is an enlarged view of a parallel link base.
FIG. 4 is an enlarged view of a connecting portion between a parallel link and a load receiving platform.
FIG. 5 is an assembly view in the AA cross section of FIG. 4;
FIG. 6 is an overall view of a conveyance state of the load receiving table lifting device.
7 is a BB diagram of FIG. 6;
FIG. 8 is a CC diagram of FIG. 6;
9 is a cross-sectional view taken along the line DD of FIG.
10 is a cross-sectional view taken along the line EE of FIG.
FIG. 11 is an enlarged perspective view of a notch groove portion of the load receiving table.
FIG. 12 is an enlarged cross-sectional view of a connecting portion between the parallel link and the load receiving table in the horizontal state of the load receiving table.
FIG. 13 is an enlarged cross-sectional view of a connecting portion between the parallel link and the load receiving table when the load receiving table is rotated 180 degrees.
FIG. 14 is an assembly diagram for loading the load receiving table lifting device on the transport pallet.
FIG. 15 is a state diagram in which the load receiving table lifting device is loaded on the transport pallet.
16 is a FF diagram of FIG. 15. FIG.
FIG. 17 is a transport state diagram of the load receiving table lifting / lowering device according to another embodiment.
18 is a FF diagram of FIG. 17. FIG.
FIG. 19 is an overall view showing a state in which the cargo receiving table of FIG. 18 is developed.
20 is a cross-sectional view taken along line HH in FIG.
FIG. 21 is a transport state diagram of the load receiving table lifting / lowering device according to another embodiment.
FIG. 22 is a transport state diagram of the load receiving table elevating device according to another embodiment.
FIG. 23 is an overall view in which the load receiving stand is developed in FIG. 22;
24 is a cross-sectional view taken along the line II of FIG.
FIG. 25 is a transport state diagram of the load receiving table lifting / lowering device according to another embodiment.
FIG. 26 is an enlarged view of a connecting portion between a parallel link and a cargo cradle according to another embodiment.
FIG. 27 is an overall view showing a state where the cargo receiving table is rotated in FIG. 26;
FIG. 28 is an enlarged view of a connecting portion between a parallel link and a cargo cradle according to another embodiment.
29 is an overall view showing a state in which the load receiving table is rotated in FIG. 28. FIG.
FIG. 30 is a transport state diagram of the load receiving table lifting / lowering device according to another embodiment.
FIG. 31 is an assembly diagram when the load receiving table elevating device of FIG. 30 is loaded on a transport pallet.
32 is a JJ diagram of FIG. 31. FIG.
[Explanation of symbols]
1 Loading platform lifting device
2 Support frame
5 Mounting members
6 Mounting bracket
9 Up link
10 Lifting cylinder
11 Standing cylinder
12 Parallel links
16 Receiving platform
18 Reinforcing member
19 Connecting shaft
20 Connecting pin
24 Notch groove
27 Transport pallet

Claims

Fixing members are fixed to the left and right ends of the support frame that can be attached to the vehicle body, and each of the mounting members is provided with a parallel link made up of an upper link and an elastic member so as to be vertically rotatable. In a load receiving and lowering device capable of lifting and lowering the load receiving stand in a horizontal state by pivotally supporting each end portion on the load receiving stand and rotating the parallel link up and down by a driving means, the parallel link on the base side of the load receiving stand Forming a notch groove into which a part of the movable member can enter, and further enabling the detachment of the connecting pin connecting the elastic member and the load receiving table, and when transporting the load receiving device lifting device, by removing the connecting pin, The load receiving table can be rotated around the pivot point of the load receiving table and the upper link, and a part of the parallel link can be inserted into the notch groove so that the load receiving table is superposed above the parallel link. Like Receiving platform lifting device, characterized in that the.

Fixing members are fixed to the left and right ends of the support frame that can be attached to the vehicle body, and each of the mounting members is provided with a parallel link made up of an upper link and an elastic member so as to be vertically rotatable. In a load receiving and lowering device capable of lifting and lowering the load receiving stand in a horizontal state by pivotally supporting each end portion on the load receiving stand and rotating the parallel link up and down by a driving means, the parallel link on the base side of the load receiving stand Forming a notch groove into which a part of the movable member can enter, and further enabling the detachment of the connecting pin connecting the elastic member and the load receiving table, and when transporting the load receiving device lifting device, by removing the connecting pin, Rotate the load receiving table to the upper side of the parallel link around the pivot point of the load receiving table and the upper link so that a part of the parallel link is inserted into the notch groove and a part of the load receiving table is an optional part of the load receiving lift In the member of Receiving platform lifting device being characterized in that to be able to be in a state of lifting.

Fixing members are fixed to the left and right ends of the support frame that can be attached to the vehicle body, and parallel links composed of an upper link and an expansion / contraction member are provided on each of the mounting members so as to be rotatable up and down by driving means. In the load receiving and lowering apparatus in which the connecting link and the load receiving platform are pivotally supported by the connecting shaft, and the load receiving stand is connected to the connecting link by the connecting pin, the upper link and each end portion of the telescopic member are connected. The upper link and the expansion / contraction member can be held in a parallel state by connecting with a link, and a notch groove into which a part of the parallel link can enter is formed on the base side of the load receiving table, and the load receiving table is moved up and down. When transporting the device, the connecting pin to the load receiving table is removed , the load receiving table is rotated to above the parallel link around the connecting shaft, and a part of the parallel link is inserted into the notch groove. Both Receiving platform lifting device being characterized in that to be able to position overlapping the receiving platform to parallel link.

Fixing members are fixed to the left and right ends of the support frame that can be attached to the vehicle body, and parallel links composed of an upper link and an expansion / contraction member are provided on each of the mounting members so as to be rotatable up and down by driving means. In the load receiving and lowering apparatus in which the connecting link and the load receiving platform are pivotally supported by the connecting shaft, and the load receiving stand is connected to the connecting link by the connecting pin, the upper link and each end portion of the telescopic member are connected. The upper link and the expansion / contraction member can be held in a parallel state by connecting with a link, and a notch groove into which a part of the parallel link can enter is formed on the base side of the load receiving table, and the load receiving table is moved up and down. When transporting the device, the connecting pin to the load receiving table is removed , the load receiving table is rotated to above the parallel link around the connecting shaft, and a part of the parallel link is inserted into the notch groove. Both Receiving platform lifting device being characterized in that to be able to be in a state of supporting a portion of the receiving platform in any member of the receiving platform lifting device.

The load receiving base lifting apparatus according to claim 2 or 4, wherein an arbitrary member of the load receiving base lifting apparatus is a mounting bracket.

The load receiving base lifting apparatus according to claim 2 or 4, wherein an arbitrary member of the load receiving base lifting apparatus is an attachment member or a support frame.

5. The load receiving platform lifting apparatus according to claim 2, wherein an arbitrary member of the load receiving platform lifting apparatus is a parallel link.