JP2004058949A - Protective structure for cargo bed worker - Google Patents

Protective structure for cargo bed worker Download PDF

Info

Publication number
JP2004058949A
JP2004058949A JP2002223653A JP2002223653A JP2004058949A JP 2004058949 A JP2004058949 A JP 2004058949A JP 2002223653 A JP2002223653 A JP 2002223653A JP 2002223653 A JP2002223653 A JP 2002223653A JP 2004058949 A JP2004058949 A JP 2004058949A
Authority
JP
Japan
Prior art keywords
worker
carrier
cargo
fan
loading platform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002223653A
Other languages
Japanese (ja)
Inventor
Katsuya Maruishi
丸石 克也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2002223653A priority Critical patent/JP2004058949A/en
Publication of JP2004058949A publication Critical patent/JP2004058949A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Control And Safety Of Cranes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To ensure the safety of a worker in handling a cargo by allowing a worker in a physically imbalanced condition to support his upper half body at once with a simple configuration, and preventing any injury of the worker to be caused by exposing his upper half body outside a cargo bed. <P>SOLUTION: A hollow cylindrical supporting member 1 with both ends open is fixed to an inner surface of a gate 13 with the axial direction thereof being the vertical direction. A grip member 2 is fitted in the supporting member 1 from one end side of the supporting member 1 when the gate 13 is at a closed position, or from the other end side of the supporting member 1 when the gate 13 is at an open position. The fit-in quantity of the grip member 2 with respect to the supporting member 1 is adjusted by the depth of groove parts 1d and 1e in which a fixing pin 2a of the grip member 2 is fitted in. An upper end of the grip member 2 is arranged at a predetermined height from an upper surface of a cargo bed 12 irrespective of the gate 13 at the closed position or the open position, and a worker engaged in a cargo handling work holds the grip member 2 at once to maintain his physical balance. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、トラック等の貨物運搬車両の荷台における荷役作業時に作業者の安全を確保するための荷台用作業者保護構造に関する。
【0002】
【従来の技術】
トラック等の貨物運搬車両の荷台におけるキャビン側の一辺(前面側)を除く3辺(2側面側及び背面側)には、一般に、荷台からの貨物の落下を防止すべく、煽と呼ばれる帯板状の扉が略垂直に立設されている。煽は、荷台における荷役作業の作業性を考慮して、下端部をヒンジとして回動自在にされており、煽の回動によって荷台の側面及び背面における側方が開閉される。荷台の3辺のそれぞれに設けられている3枚の煽は、各々個別に回動自在にされている。荷台の長手方向の2辺のそれぞれを2分割し、荷台に合計5枚の煽が設けられる場合にも、各煽は互いに個別に回動させることができるようにされている。
【0003】
荷台における荷役作業時に、荷台に対する貨物の昇降距離を短くして作業を容易にすべく、煽を下方に回動させて荷台の側方を開放した場合、荷台上の作業者が荷台端部から外部に足を踏み外したり足を滑らせる可能性がある。一般に荷台上面の地上高は1m程度であるため、荷台端部から外部に足を踏み外したり足を滑らせた作業者が路面に達する前に姿勢を整えることができず、路面に頭部や肩部から落下する場合が多い。また、貨物運搬車両が停車している荷役場所の路面は必ずしも平坦でないため、落下後に受け身をとることができない場合も多く、骨折等の損傷を負う可能性が高い。
【0004】
このため、特に、荷台に対して貨物を昇降させるクレーンを備えた貨物運搬用車両では、立てた状態の煽によって荷台の側方を閉鎖したまま、荷役作業が行われる場合がある。これによって、荷台上の作業者が荷台の端部から外部に足を踏み外したり足を滑らせることがなく、荷台上からの作業者の路面への落下を防止して貨物運搬車両の荷台における荷役作業の危険性を緩和することができる。
【0005】
なお、貨物運搬用車両に備えられるクレーンは、近年の省力化の要請により、送信機を介してラジコン操作できるようにされている。クレーンを備えた貨物運搬用車両の運転者が荷役作業場所に赴いた後に荷台上で送信機を用いてクレーンをラジコン操作して荷役作業を行うことにより、運転者に荷役作業者を兼ねさせることができ、荷役作業のみを行う作業者を運転者に随伴させる必要がなく、貨物の運搬及び荷役作業の省力化が図られる。
【0006】
【発明が解決しようとする課題】
しかしながら、煽を立てて荷台の側方を閉鎖した状態で荷役作業を行う場合、荷台上で貨物と煽の内側面との間に作業者の脚が挟まれる可能性があり、この状況では作業者は身体のバランスを崩し易いが、煽の上端の位置は荷台上に立上がった作業者が把持できるほどには高くなく、バランスを崩した作業者は咄嗟に上半身を支持することができず、作業者の上半身が荷台の外部に露出して作業者が頭部や肩部から路面に落下したり脚部を骨折する等、極めて重篤な損傷を負う問題がある。
【0007】
特に、貨物運搬用車両に備えられたクレーンを用いて荷役作業を行う場合には、作業者による送信機の操作ミスによってクレーンに吊り下げられた貨物が作業者の意図しない方向に移動し、煽を立てて荷台の側方を閉鎖した状態で貨物と煽の内側面との間に作業者の脚が挟まれる場合だけでなく、煽を下方に回動させて荷台の側方を開放した状態でも、作業者の身体のバランスを崩す状況を生じ易く、作業者が重篤な損傷を負う危険性が高い。
【0008】
この発明の目的は、荷台の側方が閉鎖されているか開放されているかに拘らず、荷台の端部に荷役作業中の作業者が咄嗟に把持できる握り部材を簡単な構成で配置できるようにすることにより、身体のバランスを崩した作業者が咄嗟に上半身を支持することができるようにし、作業者の上半身が荷台の外部に露出することによる作業者の負傷を防止することができ、荷役作業時における作業者の安全性を確保できる荷台用作業者保護構造を提供することにある。
【0009】
【課題を解決するための手段】
この発明は、上記の課題を解決するための手段として、以下の構成を備えている。
【0010】
(1)両開放端が互いに平行になるように屈曲した棒体からなる握り部材と、荷台側方を開閉する煽の内側面に取り付けられ、煽による荷台側方の開閉状態に応じて煽の内側面に平行な2方向のそれぞれから握り部材の両開放端が選択的に着脱される2個1組の支持部材と、から構成し、握り部材を前記2方向のそれぞれから支持部材に装着した際に握り部材の上端が荷台上面又は煽上端よりも上方に位置することを特徴とする。
【0011】
この構成においては、荷台側方を閉鎖した状態の煽の内側面に取り付けられた支持部材に、煽の内側面に平行な2方向のうちの一方から握り部材の両開放端を装着すると、握り部材の上端が煽上端よりも上方に位置する。一方、荷台側方を開放した状態の煽の内側面に取り付けられた支持部材に、煽の内側面に平行な2方向のうちの他方から握り部材の両開放端を装着すると、握り部材の上端が荷台上面よりも上方に位置する。したがって、複雑な構成を必要とすることなく、煽による荷台側方の開閉状態に拘らず、荷台上における荷役作業中の作業者が身体を支持するために把持すべき部材が容易に手の届く高さに存在し、荷台上で作業者が身体のバランスを崩した際に握り部材の一部を把持することによって作業者の上半身が確実に支持される。
【0012】
(2)前記支持部材は、煽の内側面に煽の長手方向に沿って各組の間に所定の間隔を設けて複数組が取り付けられていることを特徴とする。
【0013】
この構成においては、煽の内側面に煽の長手方向に沿って複数組の支持部材が、各組の間に所定の間隙を設けて取り付けられている。したがって、荷台における少なくとも一方の端部には所定の間隔で複数の握り部材が存在し、荷台上における荷役作業中の作業者が身体を支持するために把持すべき部材がさらに容易に手の届く高さに存在する。
【0014】
【発明の実施の形態】
図1は、この発明の実施形態に係る荷台用作業者保護構造を適用したトラックの外観図である。トラック10は、キャビン11の後方に平面形状が矩形を呈する荷台12を備えている。荷台12の平面形状における4辺のうち、前面側の短辺を除く2長辺及び背面側の短辺には、帯板状の煽13〜15が下端部をヒンジとして、閉鎖位置と開放位置との間に回動自在に支持されている。図において煽13,15が閉鎖位置にあり、煽14が開放位置にある。
【0015】
煽13〜15は、閉鎖位置にある状態で、荷台12の2側面側及び背面側の端部に直立して荷台12の側方を閉鎖し、荷台12に積載されている貨物の荷台12からの落下を防止する。一方、煽13〜15は、開放位置にある状態で、荷台12の2側面側及び背面側の端部から略垂直に下垂して荷台12の側方を開放し、荷台12に対する貨物の積み下ろしを容易にする。煽13〜15の高さは一般に40〜50cm程度であり、荷台12上に立った状態の作業者は、そのままの状態では煽13〜15の上端を把持することはできない。
【0016】
煽13〜15には、この発明の実施形態に係る荷台用作業者保護構造を構成する握り部材2が2個1組の支持部材1,1を介して取り付けられている。握り部材2は、一例として金属製中空円筒形状の棒体を2箇所において直角に屈曲し、開放端である両端部が互いに平行となるように形成されている。支持部材1は、主に握り部材2の外径よりも僅かに大きい外径の中空円筒形状の金属製パイプを素材として形成されており、両端において開放している。1対の支持部材1,1は、握り部材2の両解放端の間隔に等しい間隔で、煽13〜15の内側面に固定されている。握り部材2は、両開放端を1対の支持部材1,1のそれぞれに嵌入することにより、煽13〜15に取り付けられる。
【0017】
握り部材2の両開放端は、煽13〜15が閉鎖位置にある状態では支持部材1に一端側から嵌入し、煽13〜15が開放位置にある状態では支持部材1に他端側から嵌入する。支持部材1の両端部における握り部材2の両開放端の嵌入長さを適当に選択することにより、煽13〜15が閉鎖位置にあるか開放位置にあるかに拘らず、煽13〜15に取り付けられた握り部材2の上端部の荷台12からの高さが、荷台12上に立っている作業者がそのままの状態で把持することのできる一例として80cm〜100cm程度にされている。したがって、握り部材2の上端部の位置は、閉鎖位置にある煽13〜15の上端よりも十分に高い位置に配置される。
【0018】
また、煽13〜15に取り付けられた複数の握り部材2の間隔は、荷台12上に立っている作業者が両腕を軽く拡げた際の両手の間隔である一例として80cm〜100cm程度にされている。1つの握り部材2は2個1組の支持部材1を介して煽13〜15に取り付けられていることから、煽13〜15における支持部材1の各組の間隔が70cm〜100cm程度の間隔にされていることになる。この間隔が、この発明の所定の間隔に相当する。例えば、図1に示す例では、長さ5mの煽13,14には幅65cmの握り部材2が80cmの間隔で5個配置されており、長さ2.15mの煽15には中央に幅65cmの握り部材2が左右に75cmずつの間隔を設けて1個配置されている。
【0019】
以上の構成により、煽13〜15が閉鎖位置にあるか開放位置にあるかに拘らず、荷台12上の端部近傍に立った作業者は、左右いずれかの腕を伸ばすだけで、姿勢を変えることなく握り部材2を把持することができる。
【0020】
キャビン11と荷台12との間には、選択的にクレーン16が配置される。クレーン16は、トラック10のフレームに固定されたベース16aにポスト16bを水平平面内で回転自在に支持し、ポスト16bの上端部にブーム16cを垂直平面内で回転自在に支持している。ブーム16cの他端は伸縮自在にされており、その先端からフック16dをワイヤ16eによって吊り下げている。ワイヤ16eは、ベース16aに取り付けられた図示しないウインチによって巻き上げ、及び、送り出される。
【0021】
ポスト16b及びブーム16cの回転、並びに、ブーム16cの伸縮により、ポスト16bを中心にブーム16cの長さを半径とする円内の任意の位置にフック16dを移動させる。また、ウインチの駆動によってブーム16cの先端からのワイヤ16eの延出量を調整し、貨物に掛止すべきフック16dを昇降させる。ポスト16b及びブーム16cの回転、ブーム16cの伸縮、並びに、ウインチの駆動は、図示しない送信機を介して作業者によって無線操縦される。
【0022】
上述のように、煽13〜15は、閉鎖位置において荷台12上の貨物の落下を防止するとともに、開放位置において荷台12に対する貨物の積み下ろしを容易にすべく、荷台12の端部に開閉自在にされている。しかし、クレーン16を用いて荷台12における荷役作業を行う場合、貨物の昇降作業が動力により行われるため、荷台12からの貨物の積み下ろしの容易性よりも煽13〜15の開閉作業の煩雑さの解消が重視され、煽13〜15を閉鎖位置にしたままで荷役作業が行われる場合がある。
【0023】
このように、荷台12における荷役作業は、煽13〜15が開放位置にある状態だけでなく、煽13〜15が閉鎖位置にある状態でも行われる可能性があるが、煽13〜15が開放位置にある状態で荷役作業が行われる場合には、荷台12上の作業者が荷台12の端部から外側に足を滑らせることがあり、一方、煽13〜15が閉鎖位置にある状態で荷役作業が行われる場合には、荷台12上の作業者が脚を貨物と煽13〜15の内側面との間に挟まれることがある。いずれの状況においても、作業者が上半身のバランスを崩し易く、作業者が咄嗟に上半身のバランスを維持することができないと、作業者の上半身が荷台の外部に露出して作業者が頭部や肩部から路面に落下したり脚部を骨折する等、極めて重篤な損傷を負う。
【0024】
そこで、この実施形態に係る荷台用作業者保護構造では、煽13〜15が閉鎖位置にあるか開放位置にあるかに拘らず、荷台12上の端部近傍に立っている作業者が左右いずれかの腕を伸ばすだけで、姿勢を変えることなく把持できる位置に握り部材2を配置しておくことにより、上半身のバランスを崩した作業者が咄嗟に握り部材2を握って上半身のバランスを維持することができるようにしている。これによって、作業者の上半身が荷台の外部に露出して作業者が頭部や肩部から路面に落下したり脚部を骨折する等の事故の発生を確実に防止できる。
【0025】
図2及び図3は、この発明の実施形態に係る荷台用作業者保護構造を構成する支持部材及び握り部材の要部を示す図である。図2(A)及び(B)は煽が閉鎖位置にある状態を示す正面図及び側面図であり、図3(A)及び(B)は煽が開放位置にある状態を示す背面図及び側面図である。
【0026】
支持部材1は、金属材料を素材とする中空円筒形状の本体1aと、同じく金属材料を素材とする本体1aから突出した平板状の取付部1bと、からなる。一例として、取付部1bは本体1aに溶接によって接合されている。取付部1bは、本体1aに一体的に形成することもできる。取付部1bには孔部1cが形成されており、煽13〜15を外側面から貫通した後に孔部1cを貫通した取付ボルト3のネジ部にナット4を締結することにより、支持部材1が煽13〜15の内側面に固定される。
【0027】
本体1aの両端のそれぞれには、互いに対向する2箇所に溝部1d,1d及び1e,1eが開放している。煽13〜15が閉鎖位置にある状態で支持部材1の上端に開放する溝部1dの軸方向の長さは、下端に開放する溝部1eの軸方向の長さに比較して十分に長くされている。
【0028】
握り部材2において、少なくとも両端部近傍の外径は支持部材1の内径に比較して僅かに小さくされている。握り部材2の両端部近傍には、固定ピン2aが軸方向に直交する方向に突出している。握り部材2の固定ピン2aの外径は、支持部材1の溝部1d及び1eの内径に比較して僅かに小さくされている。
【0029】
図2に示すように、煽13〜15が閉鎖位置にある場合には、固定ピン2aが支持部材1の溝部1dの下端に当接する位置まで、握り部材2の両端部が支持部材1内に一端側から嵌入する。一方、図3に示すように、煽13〜15が開閉位置にある場合には、固定ピン2aが支持部材1の溝部1eの下端に当接する位置まで、握り部材2の両端部が支持部材1内に他端側から嵌入する。
【0030】
溝部1dの軸方向の長さは、溝部1eに比較して十分に長くされているため、図2に示す煽13〜15が閉鎖位置にある場合の握り部材2の上端の荷台12上面からの距離L1と、図3に示す煽13〜15が開放位置にある場合の握り部材2の上端の荷台12上面からの距離L2との差は、握り部材2の高さに比較して十分に小さい。このため、簡単な構成で、煽13〜15が閉鎖位置にある場合、及び、開放位置にある場合のいずれにおいても、煽13〜15に取り付けられた握り部材2の上端部の荷台12上面からの高さを、荷台12上に立っている作業者がそのままの状態で把持することのできる高さにすることができる。
【0031】
なお、この実施形態に係る荷台用作業者保護構造を構成する支持部材1及び握り部材2はともに金属材料を素材とすることとしたが、作業者が上半身のバランスを保とうとして握り部材2を把持した際に作用する力に対して十分な強度を備えることを条件として、任意の材料を素材とすることができる。また、支持部材1及び握り部材2の形状は、中空円筒形状に限るものではなく、握り部材2の両端部の外形と支持部材1の本体1aの中空部の形状とが等しいことを条件として、任意の形状とすることができる。
【0032】
さらに、煽13〜15に対する支持部材1の固定方法は、固定ボルトとナットとの締結に限るものではなく、作業者が上半身のバランスを保とうとして握り部材2を把持した際に作用する力に対して十分な強度を備えることを条件として、任意の方法を用いることができる。
【0033】
加えて、支持部材1に両端部を嵌入させた状態の握り部材2に上向きの外力が作用した際に、握り部材2が支持部材1に対して上方へ移動することを規制するストッパを支持部材1又は握り部材2に備えてもよい。
【0034】
また、荷台の長辺に配置する煽を2分割にして全部で5枚の煽が備えられる場合を含めて、荷台に備えられた煽の全てにこの発明の荷台用作業者保護構造を適用する必要は必ずしもない。専ら荷台の一方においてのみ荷役作業が行われる場合には、一部の煽のみに支持部材を介して握り部材を取り付けることによってもこの発明の効果を奏することができる。
【0035】
さらに、支持部材1に対する握り部材2の固定構造は、支持部材1の溝部1d,1e及び握り部材2の固定ピン2aに限るものではなく、例えば、握り部材2に溝部を形成し、支持部材に固定ピンを形成したものを含めて、任意の構造を用いることができる。
【0036】
【発明の効果】
この発明によれば、以下の効果を奏することができる。
【0037】
(1)煽による荷台側方の開閉状態に拘らず、荷台上における荷役作業中の作業者が身体を支持するために把持すべき部材を容易に手の届く高さに配置することができ、荷台上で作業者が身体のバランスを崩した際に握り部材の一部を把持することによって作業者の上半身を確実に支持でき、上半身が荷台の外部に露出することによる作業者の負傷を未然に防止して、荷役作業時における作業者の安全性を確保できる。
【0038】
(2)煽の内側面に煽の長手方向に沿って複数組の支持部材を、各組の間に所定の間隔を設けて取り付けることにより、荷台上における荷役作業中の作業者が身体を支持するために把持すべき部材をさらに容易に手の届く高さに配置することができる。
【図面の簡単な説明】
【図1】この発明の実施形態に係る荷台用作業者保護構造を適用したトラックの外観図である。
【図2】煽が閉鎖位置にある状態において、この発明の実施形態に係る荷台用作業者保護構造を構成する支持部材及び握り部材の要部を示す正面図及び側面図である。
【図3】煽が開放位置にある状態において、この発明の実施形態に係る荷台用作業者保護構造を構成する支持部材及び握り部材の要部を示す背面図及び側面図である。
【符号の説明】
1−支持部材(荷台用作業者保護構造)
1a−本体
1b−取付部
1c−孔部
1d,1e−溝部
2−握り部材(荷台用作業者保護構造)
2a−固定ピン
3−取付ボルト
4−ナット
10−トラック
11−キャビン
12−荷台
13〜15−煽
16−クレーン
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo carrier worker protection structure for ensuring the safety of workers during cargo handling work on a cargo carrier such as a truck.
[0002]
[Prior art]
Three sides (two sides and a back side) of the cargo carrier of a truck such as a truck, excluding one side (front side) of the cabin, are generally provided with a band plate called a fan to prevent the cargo from falling from the carrier. -Shaped door stands upright. In view of the workability of cargo handling work on the loading platform, the lower end is hinged so as to be freely rotatable, and the lateral sides and the rear surface of the loading platform are opened and closed by the rotation of the lifting platform. The three fans provided on each of the three sides of the bed are individually rotatable. Each of the two sides in the longitudinal direction of the loading platform is divided into two, and even when the loading platform is provided with a total of five fans, the fans can be individually rotated with respect to each other.
[0003]
During loading and unloading work on the loading platform, if the lifter is pivoted down and the sides of the loading platform are opened to shorten the lifting distance of the cargo relative to the loading platform and facilitate the work, the worker on the loading platform will be May step outside or slip on the outside. Generally, the height of the ground on the upper surface of the loading platform is about 1 m, so that the worker who steps off the edge of the loading platform or slides his / her foot cannot adjust his / her posture before reaching the road surface. Often falls from the part. In addition, since the road surface at the loading / unloading place where the cargo transport vehicle is stopped is not always flat, it is often impossible to take passive action after dropping, and there is a high possibility of damage such as a fracture.
[0004]
For this reason, in particular, in a cargo transporting vehicle equipped with a crane that raises and lowers cargo with respect to the loading platform, the cargo handling operation may be performed while the sides of the loading platform are closed by the upright standing. This prevents the worker on the loading platform from stepping off the edge of the loading platform to the outside or slipping, prevents the worker from falling from the loading platform onto the road surface, and prevents cargo from being carried on the loading platform of the cargo transport vehicle. The risk of work can be reduced.
[0005]
In addition, the crane provided in the cargo transporting vehicle can be operated by radio control via a transmitter in response to recent demand for labor saving. After the driver of the cargo transport vehicle equipped with a crane goes to the cargo handling work place, the driver also doubles as a cargo handling operator by performing radio control on the crane using the transmitter on the carrier and performing the cargo handling work. Therefore, there is no need to accompany a driver who performs only cargo handling work with the driver, and labor for transporting cargo and handling cargo can be reduced.
[0006]
[Problems to be solved by the invention]
However, when cargo handling work is performed with the side of the loading platform closed with the fan raised, the operator's legs may be pinched between the cargo and the inner surface of the fan on the loading platform. Is easy to lose body balance, but the position of the upper end of the fan is not high enough to be gripped by the worker standing on the carrier, and the worker who loses balance cannot support the upper body immediately. In addition, there is a problem that the worker's upper body is exposed to the outside of the carrier, and the worker falls down from the head or shoulder to the road surface or breaks the leg, causing serious damage.
[0007]
In particular, when carrying out cargo handling operations using a crane provided in a cargo transportation vehicle, the cargo suspended by the crane moves in a direction not intended by the worker due to a mistake in the operation of the transmitter by the worker, and is lifted. Not only when the operator's leg is caught between the cargo and the inner surface of the gantry with the side of the pallet closed, but also the side of the pallet opened by rotating the gantry downward However, a situation in which the body of the worker is out of balance is likely to occur, and there is a high risk that the worker may suffer serious damage.
[0008]
An object of the present invention is to provide a simple configuration in which a gripping member that can be quickly grasped by a worker during cargo handling work can be arranged at the end of the cargo bed regardless of whether the side of the cargo bed is closed or opened. By doing so, a worker who has lost his balance can immediately support the upper body, preventing the worker's upper body from being exposed to the outside of the carrier, and preventing the worker from being injured. An object of the present invention is to provide a carrier protection structure for a carrier that can ensure the safety of the worker during work.
[0009]
[Means for Solving the Problems]
The present invention has the following arrangement as means for solving the above-mentioned problems.
[0010]
(1) A gripping member consisting of a bar bent so that both open ends are parallel to each other, and attached to the inner side of the fan that opens and closes the side of the carrier And a pair of support members to which both open ends of the gripping member are selectively attached and detached from two directions parallel to the inner surface, respectively, and the gripping member is mounted on the support member from each of the two directions. In this case, the upper end of the gripping member is located above the upper surface of the loading platform or the upper end of the fan.
[0011]
In this configuration, when the open ends of the gripping member are attached to the support member attached to the inner surface of the lift with the side of the loading platform closed from one of two directions parallel to the inner surface of the lift, The upper end of the member is located above the fan upper end. On the other hand, when the open ends of the gripping member are attached to the support member attached to the inner surface of the fan with the side of the carrier being opened from the other of two directions parallel to the inner surface of the fan, the upper end of the grip member Is located above the upper surface of the carrier. Therefore, the member to be gripped by the worker during the cargo handling operation on the carrier to support the body is easily accessible regardless of the open / closed state of the carrier due to the fan, without requiring a complicated configuration. It is present at the height, and the upper body of the worker is securely supported by gripping a part of the gripping member when the worker loses his or her balance on the carrier.
[0012]
(2) The support member is characterized in that a plurality of sets are mounted on the inner surface of the fan along the longitudinal direction of the fan at predetermined intervals between the sets.
[0013]
In this configuration, a plurality of sets of support members are attached to the inner surface of the fan along the longitudinal direction of the fan with a predetermined gap provided between each pair. Therefore, a plurality of gripping members are present at a predetermined interval at at least one end of the loading platform, and the members to be gripped by the worker during the loading operation on the loading platform to support the body are more easily reachable. Present at height.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an external view of a truck to which a carrier worker protection structure according to an embodiment of the present invention is applied. The truck 10 includes a carrier 12 having a rectangular planar shape behind the cabin 11. Of the four sides of the plane shape of the loading bed 12, two long sides excluding the short side on the front side and the short side on the back side are closed and opened positions with band plate-shaped fans 13 to 15 having lower ends as hinges. And is rotatably supported between them. In the figure, the fans 13 and 15 are in the closed position, and the fan 14 is in the open position.
[0015]
In the closed position, the louvers 13 to 15 stand upright on the two side and rear ends of the loading platform 12 to close the sides of the loading platform 12, and from the loading platform 12 of the cargo loaded on the loading platform 12. To prevent falling. On the other hand, the fan 13 to 15 are, in the open position, drooping substantially perpendicularly from the two side and rear ends of the loading platform 12 to open the sides of the loading platform 12 and unload the cargo to and from the loading platform 12. make it easier. The height of the fans 13 to 15 is generally about 40 to 50 cm, and a worker standing on the carrier 12 cannot grasp the upper ends of the fans 13 to 15 as it is.
[0016]
A pair of grip members 2 constituting a carrier worker protection structure for a carrier according to an embodiment of the present invention are attached to the fans 13 to 15 via a pair of support members 1 and 1. The gripping member 2 is formed, for example, by bending a metal hollow cylindrical rod at two places at a right angle and making both ends which are open ends parallel to each other. The support member 1 is mainly formed of a hollow cylindrical metal pipe having an outer diameter slightly larger than the outer diameter of the grip member 2, and is open at both ends. The pair of support members 1 and 1 are fixed to the inner surfaces of the fans 13 to 15 at an interval equal to the interval between both open ends of the gripping member 2. The grip member 2 is attached to the fans 13 to 15 by fitting both open ends into each of the pair of support members 1 and 1.
[0017]
Both open ends of the gripping member 2 fit into the support member 1 from one end when the louvers 13 to 15 are in the closed position, and fit into the support member 1 from the other end when the louvers 13 to 15 are in the open position. I do. By appropriately selecting the fitting length of both open ends of the gripping member 2 at both ends of the support member 1, regardless of whether the fan 13 to 15 is in the closed position or the open position, the fan 13 to 15 The height of the upper end of the attached gripping member 2 from the carrier 12 is set to about 80 cm to 100 cm as an example that allows an operator standing on the carrier 12 to hold the same as it is. Therefore, the position of the upper end of the gripping member 2 is arranged at a position sufficiently higher than the upper ends of the fans 13 to 15 in the closed position.
[0018]
In addition, the interval between the plurality of grip members 2 attached to the fans 13 to 15 is set to about 80 cm to 100 cm as an example, which is the interval between both hands when the worker standing on the carrier 12 spreads both arms lightly. ing. Since one gripping member 2 is attached to the fans 13 to 15 via a pair of the supporting members 1, the distance between each pair of the supporting members 1 in the fans 13 to 15 is set to about 70 cm to 100 cm. It will be. This interval corresponds to the predetermined interval of the present invention. For example, in the example shown in FIG. 1, five grip members 2 each having a width of 65 cm are arranged at intervals of 80 cm in the fan 13 and 14 each having a length of 5 m, and a width 15 is provided at the center in the fan 15 having a length of 2.15 m. One gripping member 2 of 65 cm is arranged on the left and right at intervals of 75 cm.
[0019]
With the above configuration, regardless of whether the fans 13 to 15 are in the closed position or the open position, the worker standing near the end on the loading platform 12 simply extends one of the right and left arms to change the posture. The grip member 2 can be gripped without changing.
[0020]
A crane 16 is selectively disposed between the cabin 11 and the bed 12. The crane 16 rotatably supports a post 16b in a horizontal plane on a base 16a fixed to a frame of the truck 10, and supports a boom 16c on an upper end of the post 16b so as to be rotatable in a vertical plane. The other end of the boom 16c is extendable, and a hook 16d is hung from the tip by a wire 16e. The wire 16e is wound up and sent out by a winch (not shown) attached to the base 16a.
[0021]
Due to the rotation of the post 16b and the boom 16c, and the expansion and contraction of the boom 16c, the hook 16d is moved around the post 16b to an arbitrary position within a circle whose radius is the length of the boom 16c. The extension of the wire 16e from the tip of the boom 16c is adjusted by driving the winch, and the hook 16d to be hooked on the cargo is raised and lowered. The rotation of the post 16b and the boom 16c, the expansion and contraction of the boom 16c, and the driving of the winch are wirelessly controlled by a worker via a transmitter (not shown).
[0022]
As described above, the louvers 13 to 15 prevent the cargo from dropping on the carrier 12 in the closed position and open and close at the end of the carrier 12 in order to facilitate loading and unloading of the cargo on the carrier 12 in the open position. Have been. However, when the cargo handling work on the cargo bed 12 is performed using the crane 16, since the lifting and lowering work of the cargo is performed by power, the operation of opening and closing the fans 13 to 15 is more complicated than the ease of loading and unloading the cargo from the cargo bed 12. There is a case where the emphasis is placed on the cancellation, and the cargo handling work may be performed with the fans 13 to 15 in the closed position.
[0023]
As described above, the cargo handling work on the loading platform 12 may be performed not only in the state in which the fans 13 to 15 are in the open position but also in the state in which the fans 13 to 15 are in the closed position. When the cargo handling work is performed in the position, the worker on the carrier 12 may slide his / her feet outward from the end of the carrier 12, while the carriers 13 to 15 are in the closed position. When a cargo handling operation is performed, an operator on the loading platform 12 may have its legs caught between the cargo and the inner surfaces of the fans 13 to 15. In either situation, if the worker easily loses balance in the upper body, and if the worker cannot immediately maintain the balance in the upper body, the worker's upper body will be exposed to the outside of the loading platform, and the worker will be exposed to the head or head. Extremely serious injuries, such as dropping from the shoulder to the road surface or breaking the leg.
[0024]
Therefore, in the worker protection structure for a bed according to this embodiment, regardless of whether the lifters 13 to 15 are in the closed position or the open position, the worker standing near the end on the bed 12 can be either left or right. By disposing the gripping member 2 at a position where it can be gripped without changing the posture only by extending the arm, the worker who has lost the balance of the upper body immediately grasps the gripping member 2 and maintains the balance of the upper body Have to be able to. As a result, it is possible to reliably prevent the occurrence of accidents such as the worker's upper body being exposed to the outside of the carrier and the worker falling from the head or shoulders onto the road surface or breaking the legs.
[0025]
FIG. 2 and FIG. 3 are views showing a main part of a support member and a gripping member constituting the carrier protection structure for a carrier according to the embodiment of the present invention. FIGS. 2A and 2B are a front view and a side view showing a state where the fan is in a closed position, and FIGS. 3A and 3B are a rear view and a side view showing a state where the fan is in an open position. FIG.
[0026]
The support member 1 includes a hollow cylindrical main body 1a made of a metal material, and a flat mounting portion 1b protruding from the main body 1a also made of a metal material. As an example, the mounting portion 1b is joined to the main body 1a by welding. The mounting portion 1b can be formed integrally with the main body 1a. A hole 1c is formed in the mounting portion 1b. After the nuts 4 are fastened to the screw portions of the mounting bolts 3 that have penetrated the holes 13 to 15 from the outer surfaces thereof and then passed through the holes 1c, the support member 1 is formed. It is fixed to the inner surface of the fan 13-15.
[0027]
At both ends of the main body 1a, grooves 1d, 1d and 1e, 1e are open at two places facing each other. The axial length of the groove 1d opened to the upper end of the support member 1 in a state where the fans 13 to 15 are in the closed position is sufficiently longer than the axial length of the groove 1e opened to the lower end. I have.
[0028]
In the gripping member 2, at least the outer diameter near both ends is slightly smaller than the inner diameter of the support member 1. In the vicinity of both ends of the grip member 2, fixing pins 2a protrude in a direction orthogonal to the axial direction. The outer diameter of the fixing pin 2a of the gripping member 2 is slightly smaller than the inner diameter of the grooves 1d and 1e of the support member 1.
[0029]
As shown in FIG. 2, when the lifters 13 to 15 are in the closed position, both ends of the gripping member 2 are in the support member 1 until the fixing pin 2 a contacts the lower end of the groove 1 d of the support member 1. Insert from one end side. On the other hand, as shown in FIG. 3, when the lifters 13 to 15 are in the open / close position, both ends of the gripping member 2 are supported by the support member 1 until the fixing pin 2a contacts the lower end of the groove 1e of the support member 1. From the other end side.
[0030]
Since the axial length of the groove 1d is sufficiently longer than the groove 1e, the upper end of the gripping member 2 from the upper surface of the carrier 12 when the fans 13 to 15 shown in FIG. The difference between the distance L1 and the distance L2 from the upper surface of the loading platform 12 at the upper end of the gripping member 2 when the lifters 13 to 15 shown in FIG. 3 are in the open position is sufficiently smaller than the height of the gripping member 2. . For this reason, with a simple configuration, in both the case where the louvers 13 to 15 are in the closed position and the case where the louvers 13 are in the open position, the upper surface of the carrier 12 at the upper end of the gripping member 2 attached to the louvers 13 to 15 Can be set to a height at which an operator standing on the loading platform 12 can hold the same as it is.
[0031]
Although the support member 1 and the grip member 2 constituting the carrier protection structure for a carrier according to this embodiment are both made of a metal material, the operator tries to maintain the balance of the upper body by using the grip member 2. Any material can be used as a raw material, provided that the material has sufficient strength against the force acting upon gripping. Further, the shapes of the support member 1 and the gripping member 2 are not limited to the hollow cylindrical shape, provided that the outer shapes of both ends of the gripping member 2 and the shape of the hollow portion of the main body 1a of the support member 1 are equal. Any shape can be used.
[0032]
Further, the method of fixing the supporting member 1 to the fans 13 to 15 is not limited to the fastening of the fixing bolt and the nut, but the force acting when the operator grips the gripping member 2 in order to maintain the balance of the upper body. Any method can be used, provided that it has sufficient strength.
[0033]
In addition, when an upward external force is applied to the grip member 2 in which both ends are fitted into the support member 1, a stopper that restricts the grip member 2 from moving upward with respect to the support member 1 is provided with a support member. 1 or the grip member 2.
[0034]
In addition, even when the fan arranged on the long side of the carrier is divided into two and a total of five fans are provided, the carrier protection structure for a carrier of the present invention is applied to all the fans provided on the carrier. It is not necessary. When the cargo handling operation is performed only on one of the loading platforms, the effect of the present invention can be exerted by attaching the gripping member via the support member to only a part of the lift.
[0035]
Further, the fixing structure of the gripping member 2 to the support member 1 is not limited to the grooves 1d and 1e of the support member 1 and the fixing pin 2a of the gripping member 2. For example, a groove is formed in the gripping member 2 and the support member is formed. Arbitrary structures can be used, including those with fixed pins.
[0036]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0037]
(1) Regardless of the open / closed state of the side of the loading platform caused by the fan, the members to be gripped in order to support the body of the worker on the loading platform to support the body can be arranged at an easily accessible height, By gripping a part of the gripping member when the worker loses his or her balance on the carrier, the upper body of the worker can be reliably supported, and injuries to the operator due to the upper body being exposed to the outside of the carrier can be prevented. And the safety of workers during cargo handling can be ensured.
[0038]
(2) A plurality of sets of support members are attached to the inner surface of the fan along the longitudinal direction of the fan with a predetermined interval provided between each pair, so that a worker during loading and unloading work on the carrier supports the body. The members to be gripped can be arranged at an easily accessible height.
[Brief description of the drawings]
FIG. 1 is an external view of a truck to which a carrier worker protection structure according to an embodiment of the present invention is applied.
FIGS. 2A and 2B are a front view and a side view showing a main part of a support member and a gripping member constituting a carrier protection structure for a carrier according to the embodiment of the present invention in a state where the fan is in a closed position.
FIGS. 3A and 3B are a rear view and a side view showing a main part of a support member and a gripping member constituting the carrier protection structure for a carrier according to the embodiment of the present invention in a state where the fan is in an open position.
[Explanation of symbols]
1-Supporting member (worker protection structure for cargo bed)
1a-Main body 1b-Mounting part 1c-Hole 1d, 1e-Groove 2-Grip member (worker protection structure for cargo bed)
2a-fixing pin 3-mounting bolt 4-nut 10-track 11-cabin 12-loading bed 13-15-fan 16-crane

Claims (2)

両開放端が互いに平行になるように屈曲した棒体からなる握り部材と、荷台側方を開閉する煽の内側面に取り付けられ、煽による荷台側方の開閉状態に応じて煽の内側面に平行な2方向のそれぞれから握り部材の両開放端が選択的に着脱される2個1組の支持部材と、から構成し、握り部材を前記2方向のそれぞれから支持部材に装着した際に握り部材の上端が荷台上面又は煽上端よりも上方に位置することを特徴とする荷台用作業者保護構造。A gripping member consisting of a bar bent so that both open ends are parallel to each other, and attached to the inner surface of the gantry that opens and closes the side of the loading platform A pair of support members to which both open ends of the grip member are selectively attached and detached from each of the two parallel directions, and wherein the grip member is gripped when mounted on the support member from each of the two directions. A carrier protection structure for a carrier, wherein the upper end of the member is located above the upper surface of the carrier or the upper end of the fan. 前記支持部材は、煽の内側面に煽の長手方向に沿って各組の間に所定の間隔を設けて複数組が取り付けられていることを特徴とする請求項1に記載の荷台用作業者保護構造。2. The carrier according to claim 1, wherein a plurality of sets of the support members are attached to the inner surface of the fan along the longitudinal direction of the fan at predetermined intervals between the sets. 3. Protection structure.
JP2002223653A 2002-07-31 2002-07-31 Protective structure for cargo bed worker Pending JP2004058949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002223653A JP2004058949A (en) 2002-07-31 2002-07-31 Protective structure for cargo bed worker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002223653A JP2004058949A (en) 2002-07-31 2002-07-31 Protective structure for cargo bed worker

Publications (1)

Publication Number Publication Date
JP2004058949A true JP2004058949A (en) 2004-02-26

Family

ID=31943351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002223653A Pending JP2004058949A (en) 2002-07-31 2002-07-31 Protective structure for cargo bed worker

Country Status (1)

Country Link
JP (1) JP2004058949A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007117246A (en) * 2005-10-26 2007-05-17 Sekisui House Ltd Fall prevention tool and its application method and fall prevention fence and its application method
JP2009061192A (en) * 2007-09-07 2009-03-26 Toyota T & S Kensetsu Kk Main rope support and main rope stretching apparatus for truck
JP2012081103A (en) * 2010-10-13 2012-04-26 Tajima:Kk Loading platform of truck, safety device for operation on loading platform of truck, and truck formed using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007117246A (en) * 2005-10-26 2007-05-17 Sekisui House Ltd Fall prevention tool and its application method and fall prevention fence and its application method
JP4556136B2 (en) * 2005-10-26 2010-10-06 積水ハウス株式会社 Fall prevention tool and its use, and fall prevention fence and its use
JP2009061192A (en) * 2007-09-07 2009-03-26 Toyota T & S Kensetsu Kk Main rope support and main rope stretching apparatus for truck
JP2012081103A (en) * 2010-10-13 2012-04-26 Tajima:Kk Loading platform of truck, safety device for operation on loading platform of truck, and truck formed using the same

Similar Documents

Publication Publication Date Title
CA2402711C (en) Apparatus for supporting automotive tires
US20030000906A1 (en) Portable hoist assembly
JP2004058949A (en) Protective structure for cargo bed worker
JP4079276B2 (en) How to lift and transfer blades
US20040108738A1 (en) Forklift clamp and choker softener
KR101103938B1 (en) Hoist and Moving apparatus of Heavy weight
CN106915708B (en) Vehicle lifting adapter system
JP2643212B2 (en) Hanging beam for crane
KR101775679B1 (en) Coil damping apparatus for forklift
JPH0967099A (en) Carrying load detecting device of vehicle for high lift work
JP2537247Y2 (en) Lifting device for self-propelled aerial work platform
JP2018002385A (en) Method for placing workpiece on transport base, method for lifting workpiece from transport base, and transport base
JPH0132159B2 (en)
ES2866524T3 (en) System and method of installation and disassembly of girders
JP6507032B2 (en) Lift car
JP3224713U (en) Luggage lifting structure and truck lifting device
JP2008303052A (en) Hanging device of self-propelled vehicle for high lift work
JPS6141741Y2 (en)
JP2000351553A (en) Lifting device for installing elevator
JP2981615B1 (en) Universal bogie for supporting electric pole
JPH1077198A (en) Cargo unloader
AU2004293121B2 (en) Lifting apparatus
JPH115696A (en) Heavy load handling device
JPH0688755B2 (en) Carrier
JPS6011018Y2 (en) Arm folding jig for lifting heavy objects