JP3857782B2

JP3857782B2 - Carriage for transportation

Info

Publication number: JP3857782B2
Application number: JP16460897A
Authority: JP
Inventors: 成伸田辺; 哲也村上
Original assignee: Gifu Plastic Industry Co Ltd
Current assignee: Gifu Plastic Industry Co Ltd
Priority date: 1997-06-20
Filing date: 1997-06-20
Publication date: 2006-12-13
Anticipated expiration: 2017-06-20
Also published as: JPH1111322A

Description

【０００１】
【発明の属する技術分野】
本発明は、運搬用台車に関するものである。
【０００２】
【従来の技術】
平面視長方形状をした台車本体の下面側にキャスタ（前輪側に自在キャスタ及び後輪側に固定キャスタまたは前後両輪共に自在キャスタ乃至固定キャスタを設ける場合がある）を設けて構成される運搬用台車を収納する際、運搬用台車を単に横に並べておくだけでは広い面積が必要となる。そこで、狭い面積で多くの台車を収納するには運搬用台車を上下に積み重ねることが考えられるが、下段の台車本体の上面に上段の台車本体の下面側に設けたキャスタを載せるようにして積み重ねなければならず、積み重ねが不安定となる。
【０００３】
このため、従来にあっては、例えば特開平８ー９１２２４号公報に示されるように、台車本体の上面の四隅寄りの部位にキャスタ支持凹部を設け、上下に積み重ねる際に、該下端の台車本体の上面の四隅寄りの部位に設けたキャスタ支持凹部に上段の台車本体の下面の四隅寄りの部位に設けたキャスタをはめ込んで、上下に積み重ね収納した際に、上の台車本体のキャスタが下の台車本体の上面部から滑り落ちないようにしている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記した特開平８ー９１２２４号公報に示された従来例にあっても、上段の台車本体の下面側に設けたキャスタが直接下段の台車本体に載置されるた状態で上下に積み重ね収納されることに変わりはなく、依然として上下積み重ね収納が不安定で、横方向からの力を受けると上の台車本体が下の台車本体の上面部から滑り落ちてしまうという問題が残り、また、上下に積み重ね収納するとしても不安定であるためせいぜい数段（例えば２、３段）しか積み上げることができないという問題があった。また、上記従来例にあっては、キャスタが直接下段の台車本体に載置された状態で上下に積み重ね収納されるので、積み重ねた際の嵩も高くなるという問題があった。
【０００５】
本発明は上記の従来例の問題点に鑑みて発明したものであって、下面にキャスタを有しているにもかかわらず、安定して上下に多段に積み重ね収納でき、また、上下の積み重ね収納の嵩を低くすることが可能となる運搬用台車を提供することを課題とするものである。
【０００６】
【課題を解決するための手段】
上記課題を解決するため、本発明の運搬用台車は、下面側にキャスタ１を有する平面視長方形状をした台車本体２の対向する両短辺に上方に向けて突台部７を突設し、下段の台車本体２の突台部７の上面部に上段の台車本体２の短辺部を載置し且つ上段の台車本体２のキャスタ１を下段の台車本体２の上面に対向するように台車本体２を上下に棒積みした状態で、互いに上下方向において係合するための棒積み用係合部３と棒積み用被係合部４とのうち一方を突台部７の上面部に設けると共に他方を台車本体２の短辺部の下面部に設け、下段の台車本体２の上面部に上段の台車本体２を平面視９０°回転した状態で載置すると共に上段の台車本体２の下面のキャスタ１を下段の台車本体２の長辺側より外に位置させる十字積み状態で、互いに上下方向において係合するための十字積み用係合部６と十字積み用被係合部５とのうち一方を台車本体２の上面部に設けると共に他方を台車本体２の下面部に設けて成ることを特徴とするものである。このような構成とすることで、台車本体２を上下方向に棒積みした状態で上下に積み重ね収納したり、あるいは、台車本体２を十字積み状態で上下に積み重ね収納したりできる。そして、棒積み状態では上下の台車本体２同士は、突台部７の上面部に上段の台車本体２の下面部が載置されて棒積み用係合部３と棒積み用被係合部４とが係合し、また十字積み状態では台車本体２の上面部に上段の台車本体２の下面部が載置されて十字積み用被係合部５と十字積み用係合部６とが係合するものであって、棒積み、十字積みいずれの場合であっても安定した積み重ねができることになる。
【０００７】
また、台車本体２を棒積みした状態で上下の台車本体２間の長さが台車本体２の厚み以上となっていることが好ましい。このように台車本体２を棒積みした状態で上下の台車本体２間の長さが台車本体２の厚み以上とすることで、１段目の台車本体２の上面部に２段目の台車本体２の下面部を十字積みし、更に、１段目の台車本体２の突台部７の上に３段目の台車本体２を棒積みするということが可能となり、上下方向に十字積み、棒積みを交互に繰り返しながら積み重ねていくことで、積み重ねた場合における嵩高さを棒積みだけの場合に比べて略１／２にできることになる。
【０００８】
また、十字積み用被係合部５が手を入れて掴むことができる持ち手用孔２６を兼用していることが好ましく、このような構成とすることで、台車本体２を手で掴んで持つ際の持ち手用孔２６を利用して台車本体２を十字積みする際の横ずれ防止を行うことができるものである。
【０００９】
【発明の実施の形態】
以下本発明を添付図面に示す実施形態に基づいて説明する。
図１乃至図４に示すように、台車本体２は平面視長方形状をしている。この台車本体２の下面には図４に示すようにキャスタ１が回転自在に設けてある。台車本体２の対向する両短辺には該短辺に沿って上方に向けて突台部７を一体に突設してあり、この突台部７を一体に突設した台車本体２は合成樹脂により形成してある。図１、図２、図５、図７に示すように、突台部７の上面部には棒積み用被係合部４が設けてあり、添付図面に示す実施形態においては突台部７の上面部の両端部にそれぞれ孔部を形成して棒積み用被係合部４ａを設け、更に突台部７の上面部の中央部に凹部を形成して棒積み用被係合部４ｂを設けてある。また、突台部７の両端部の棒積み用被係合部４ａよりもやや内側にはそれぞれ図６に示すように上下に貫通する孔２７が形成してある。
【００１０】
図中８は補強用ベース金具であって、図１５（ａ）に示すように、金属製の梁材８ａの両端部に金属製の角筒状をしたフレーム差込み金具８ｂを固着して構成してあり、梁材８ａを図４のように台車本体２の下面部に長辺に平行に形成した凹溝条９にはめ込むと共に角筒状をしたフレーム差込み金具８ｂを上記突台部７に設けた孔２７に嵌め込み、任意の固着手段により補強用ベース金具８を台車本体２に固着してある。このように補強用ベース金具８を台車本体２に取付けることで合成樹脂製の台車本体２の補強をおこなうものであり、また、角筒状をしたフレーム差込み金具８ｂには後述のフレーム１０が差込まれてフレーム１０を支持するためのフレーム差込み部となっており、このフレーム差込み部を構成するフレーム差込み金具８ｂにおいてフレーム１０の支持を支持することでフレーム１０の支持が確実且つ強固におこなえることになる。勿論、フレーム１０が丸筒状であればフレーム差込み金具８ｂは図１５（ｂ）のような丸筒状になることはいうまでもない。また、台車本体２の外側面部のコーナ部分にはゴム製のコーナ保護部２９が設けてある。
【００１１】
台車本体２の両長辺側にはそれぞれ細長孔状をした持ち手用孔２６が形成してあり、本実施形態においてはこの持ち手用孔２６が十字積み用被係合部５を構成している。この持ち手用孔２６は手を入れることができる大きさに形成してあり、持ち手用孔２６に手を入れて掴むことで台車本体２を手で持って移動できるようになっている。
【００１２】
台車本体２は、図１２に示すように、下段の台車本体２の突台部７の上面部に上段の台車本体２の下面部の短辺部を載置する棒積みができるようになっており、この棒積み状態においては、上段の台車本体２のキャスタ１が下段の台車本体２の上面に対向するようになっている。つまり、キャスタ１は台車本体２の突台部７の真下の下面部よりもやや内側にずれた位置において台車本体２の下面部の略四隅部分に取付けてあるので、上記のように台車本体２を棒積みした状態で上段のキャスタ１が下段の台車本体２の突台部７間に位置するようになっており（添付図面に示す実施形態においてはキャスタ１を回転させてキャスタ１の回転軸が台車本体２の長辺と略平行な方向とすることでキャスタ１を下段の台車本体２の突台部７間に位置するようにしてある）、しかも、この場合、突台部７の突出長さを棒積みした状態で上下の台車本体２間にキャスタ１が収まる程度の突出長さとしてあり（つまり、キャスタ１の下方への突出長さが、台車本体２を棒積みした状態で上段のキャスタ１が下段の台車本体２の上面に接するか又は上段のキャスタ１が下段の台車本体２の上面から少し浮いた状態となるようにしてある）。特に、突台部７の突出長さを棒積みした状態で上下の台車本体２間にキャスタ１が収まって下の台車本体２から少し浮くような状態とすると、上段のキャスタ１を収納するキャスタ支持凹所が不要であり、また、台車本体２を上下方向に多段積みして保管／移動した時、突台部７部分で上下に載置されるので、地面の不陸／傾斜地でのキャスタ１のころがりによる台車本体２の荷崩れがないものである。また、台車本体２の長辺と平行な方向において対向するキャスタ１同士は台車本体２の短辺の長さよりも長い距離隔てるような位置に取付けてある。
【００１３】
台車本体２の下面部の両短辺部にはそれぞれ棒積み用係合部３が設けてあり、添付図面に示す実施形態においては図３、図４に示すように、下面部の短辺部の両端部にそれぞれ棒積み用係合部３ａを設け、更に突台部７の下面部の短辺部の中央部に棒積み用係合部３ｂを設けてある。したがって、下段の台車本体２の突台部７の上面部に上段の台車本体２の短辺部を載置した棒積み状態では、棒積み用係合部３ａが棒積み用被係合部４ａに係合し、棒積み用係合部３ｂが棒積み用被係合部４ｂに係合するようになっていて、上段の台車本体２が下段の台車本体２に対して横ずれしないように上下方向に確実に接合され、安定した積み重ねができるようになっている。
【００１４】
ところで、すでに述べたように、台車本体２の長辺と平行な方向において対向するキャスタ１同士は台車本体２の短辺の長さよりも長い距離を隔てるような位置に取付けてあるので、図１３に示すように、下段の台車本体２の上面部に上段の台車本体２を平面視９０°回転した状態で載置すると共に上段の台車本体２の下面のキャスタ１を下段の台車本体２の長辺側より外に位置させる十字積みができるものである。そして、この十字積み状態において、下段の台車本体２に設けた持ち手用孔２６を構成する十字積み用被係合部５に係合するための下向き突部よりなる十字積み用係合部６が台車本体２の下面部に設けてある。このため、下段の台車本体２の上面部に上段の台車本体２の下面部を載置して十字積みした場合、下段の台車本体２の持ち手用孔２６に上段の台車本体２の十字積み用係合部６が係合して、上段の台車本体２が下段の台車本体２に対して横ずれしないように上下方向に確実に接合され、安定した積み重ねができるようになっている。また、この十字積みをすると２個の台車を嵩低く積み重ねることができるものである。そして、台車本体２を手で持つ際に使用する持ち手用孔２６をそのまま十字積みの際のずれ防止のための手段として兼用しているので、構成が簡略化されることになる。
【００１５】
ここで、台車本体２を棒積みした状態で上下の台車本体２間の長さが台車本体２の厚み以上となるように設定してある。そして、このように設定することで、図１４に示すように、１段目の台車本体２の上面部に２段目の台車本体２の下面部を十字積みし、更に、１段目の台車本体２の突台部７の上に３段目の台車本体２を棒積みするということが可能となるものである。このように上下方向に十字積み、棒積みを交互に繰り返しながら図１４のように積み重ねていくことで、積み重ねた場合における嵩高さを棒積みだけの場合に比べて略１／２にできるものである。
【００１６】
図１４に示す実施形態においては台車本体２の厚みよりも台車本体２の上面部から突台部７の上面部までの突出長さを長くすることにより、台車本体２を棒積みした状態で上下の台車本体２間の長さが台車本体２の厚み以上となるようにしてあるが、これのみに限定されるものではなく、図１６に示すように、台車本体２の上面部から突台部７の上面部までの突出長さが台車本体２の厚み以下であっても、台車本体２の下面部の両短辺部に下突部７ａを設け、台車本体２を棒積みした状態で、下段の台車本体２の突台部７の上面部に上段の台車本体２の下突部７ａの下面部が載置されるようにし、突台部７の上方への突出長さと下突部７ａの下方への突出長さとの合計が台車本体２の厚みよりも長くなるようにしてもよいものである。
【００１７】
本発明の運搬用台車の使用に当たっては台車本体２のフレーム差込み金具８ｂにフレーム１０をはめ込んで取付けることで使用されるものである。フレーム１０は下端部両側に脚部１０ａを突設してあり、この両側の脚部１０ａを突台部７に設けた一対のフレーム差込み金具８ｂにはめ込むと共にフレーム１０の下部の当たり部１３を突台部７上に載置することでフレーム１０を突台部７に突設する。このようにしてフレーム１０を両側の突台部７上に立設するものである。台車本体２の上面部には載置物１６が載置される。ここでフレーム１０を建て込むことで、載置物１６を上下に多段に積み重ねて載置して載置高さが高くなってもフレーム１０により横ずれを防止できるようになっている。なお、一方のフレーム１０には連結棒１４の一端部が回動自在に取付けてあり、連結棒１４の他端部を他方のフレーム１０の引っ掛け部１５に着脱自在に引っ掛けて両フレーム１０を連結するものである。
【００１８】
また、台車本体２の突台部７に設ける棒積み用被係合部４ａを凹部により構成すると、台車本体２同士は図１０に示すように隣合う台車本体２の長辺同士が当接するように並設した場合、あるいは、図１１に示すように隣合う台車本体２の短辺同士が当接するように並設した場合、逆Ｕ字状をした連結部材１７を用いて台車本体２同士を連結することができるものである。すなわち、逆Ｕ字状をした連結部材１７の両側の嵌め込み脚部１８がそれぞれ隣合う台車本体２の凹部よりなる棒積み用被係合部４ａに嵌め込まれることで連結部材１７を介して隣合う台車本体２が連結されるものである。このように台車本体２を横に並べた状態で連結することで、載置物１６を載置した状態の台車本体２を複数個並べて連結した状態でキャスター１を転動させながら同時に移動させることができ、また、連結した複数個の台車本体２にわたる大きい載置物１６を載置して移動することもできるものである。
【００１９】
【発明の効果】
本発明の請求項１記載の発明にあっては、上述のように、下段の台車本体の突台部の上面部に上段の台車本体の短辺部を載置し且つ上段の台車本体のキャスタを下段の台車本体の上面に対向するように台車本体を上下に棒積みした状態で、互いに上下方向において係合するための棒積み用係合部と棒積み用被係合部とのうち一方を突台部の上面部に設けると共に他方を台車本体の短辺部の下面部に設け、下段の台車本体の上面部に上段の台車本体を平面視９０°回転した状態で載置すると共に上段の台車本体の下面のキャスタを下段の台車本体の長辺側より外に位置させる十字積み状態で、互いに上下方向において係合するための十字積み用係合部と十字積み用被係合部とのうち一方を台車本体の上面部に設けると共に他方を台車本体の下面部に設けてあるので、台車本体を上下方向に棒積みした状態で上下に積み重ね収納したり、あるいは、台車本体を十字積み状態で上下に積み重ね収納したりできるものであり、しかも、棒積み状態では上下の台車本体同士は、突台部の上面部に上段の台車本体の下面部が載置されて棒積み用係合部と棒積み用被係合部とが係合し、また十字積み状態では台車本体の上面部に上段の台車本体の下面部が載置されて十字積み用被係合部と十字積み用係合部とで係合するものであって、いずれの場合でも上段の台車本体が横ずれするのを確実に防止でき、安定した積み重ねができるものである。
【００２０】
また、請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、十字積み用被係合部が手を入れて掴むことができる持ち手用孔を兼用しているので、台車本体を手で掴んで持つ際の持ち手用孔を利用して台車本体を十字積みする際の横ずれ防止を行うことができるものであって、構成を簡略化できるものである。
【図面の簡単な説明】
【図１】本発明の運搬用台車の斜視図である。
【図２】同上の平面図である。
【図３】同上の下面図である。
【図４】同上の上下逆にした状態の斜視図である。
【図５】同上の長辺と平行な方向での断面図である。
【図６】同上の長辺と平行な方向での他の箇所の断面図である。
【図７】同上の短辺と平行な方向での断面図である。
【図８】同上のフレームを取付けている状態の斜視図である。
【図９】同上の載置物を載せた状態の斜視図である。
【図１０】同上の運搬用台車を長辺を隣接させて接続した状態の斜視図である。
【図１１】同上の運搬用台車を短辺を隣接させて接続した状態の斜視図である。
【図１２】同上の棒積み状態の正面図である。
【図１３】同上の十字積み状態を示し、（ａ）は正面図であり、（ｂ）は平面図である。
【図１４】同上の十字積みと棒積みとを上下方向に交互に繰り返しながら積み重ねた状態を示し、（ａ）は正面図であり、（ｂ）は平面図である。
【図１５】（ａ）は本発明に用いて補強用ベース金具の斜視図であり、（ｂ）は他の例の斜視図である。
【図１６】本発明の台車本体を棒積みした状態で上下の台車本体間の長さを台車本体の厚み以上とする他の例を示す正面図である。
【符号の説明】
１キャスタ
２台車本体
３棒積み用係合部
４棒積み用被係合部
５十字積み用被係合部
６十字積み用係合部
７突台部
２６持ち手用孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a carriage for transportation.
[0002]
[Prior art]
A cart with a rectangular shape in plan view, with a caster on the lower side of the cart body (a free caster on the front wheel side and a fixed caster on the rear wheel side, or a universal caster or a fixed caster on both front and rear wheels may be provided) When storing the vehicle, a large area is required simply by arranging the carriages side by side. In order to store a large number of trucks in a small area, it is conceivable to stack the carriages up and down, but stack the casters provided on the lower surface side of the upper carriage body on the upper face of the lower carriage body. Must be stacked, making stacking unstable.
[0003]
For this reason, conventionally, as shown in, for example, Japanese Patent Application Laid-Open No. 8-91224, when the caster support recesses are provided in the portions near the four corners of the upper surface of the cart body, When the casters provided at the four corners of the lower surface of the upper body of the upper stage are fitted into the caster support recesses provided at the upper corners of the upper surface of the upper, the upper caster body casters are It prevents slipping off from the upper surface of the cart body.
[0004]
[Problems to be solved by the invention]
However, even in the conventional example shown in the above-mentioned Japanese Patent Application Laid-Open No. 8-91224, the casters provided on the lower surface side of the upper cart body are stacked up and down while being directly placed on the lower cart body. There is no change in being stored, the stacking up and down is still unstable, and the problem that the upper cart body slides down from the upper surface of the lower cart body when receiving a force from the lateral direction remains, There is a problem that only a few stages (for example, two or three stages) can be stacked at most because it is unstable even when stacked and stored up and down. Further, in the above conventional example, since the casters are stacked and stored vertically while being mounted directly on the lower cart body, there is a problem that the bulk when stacked is increased.
[0005]
The present invention has been invented in view of the above-described problems of the conventional example, and can be stably stacked and stored in multiple stages in the up and down direction even though it has casters on its lower surface. It is an object of the present invention to provide a transportation cart that can reduce the bulk of the vehicle.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the transportation cart of the present invention has a projecting portion 7 projecting upward on both opposing short sides of a cart body 2 having a rectangular shape in plan view having casters 1 on the lower surface side. The short side portion of the upper cart body 2 is placed on the upper surface of the projecting portion 7 of the lower cart body 2 so that the caster 1 of the upper cart body 2 faces the upper surface of the lower cart body 2. In the state where the cart body 2 is vertically stacked, one of the stacking engaging portion 3 and the stacking engaged portion 4 for engaging with each other in the vertical direction is placed on the upper surface portion of the projecting portion 7. And the other is provided on the lower surface of the short side portion of the carriage main body 2, and the upper carriage main body 2 is placed on the upper face of the lower carriage main body 2 in a state rotated 90 ° in plan view, and the upper carriage main body 2 In a cross-stacked state in which the lower casters 1 are positioned outside the long side of the lower cart body 2, One of the cruciform engaging portion 6 and the crucifixed engaged portion 5 for engaging in the downward direction is provided on the upper surface portion of the cart body 2 and the other is provided on the lower surface portion of the cart body 2. It is characterized by this. By setting it as such a structure, the trolley | bogie main body 2 can be stacked and accommodated up and down in the state piled up and down, or the trolley | bogie main body 2 can be stacked and accommodated up and down in the cross-stacked state. In the stacked state, the upper and lower cart bodies 2 are placed on the upper surface portion of the projecting platform portion 7 so that the lower surface portion of the upper cart body 2 is placed, and the bar stack engaging portion 3 and the bar stack engaged portion. 4 is engaged, and in the cross-stacked state, the lower surface portion of the upper cart body 2 is placed on the upper surface portion of the cart body 2 so that the cross-engaged engaged portion 5 and the cross-engaging engagement portion 6 are connected to each other. Engaging and stable stacking can be performed in either case of bar stacking or cross stacking.
[0007]
Further, it is preferable that the length between the upper and lower cart bodies 2 is equal to or greater than the thickness of the cart body 2 in a state where the cart bodies 2 are stacked. In this way, the length between the upper and lower cart bodies 2 is equal to or greater than the thickness of the cart body 2 in a state where the cart bodies 2 are stacked, so that the second cart body is formed on the upper surface of the first cart body 2. 2 can be cross-stacked, and the third-stage cart body 2 can be stacked on the projecting portion 7 of the first-stage cart body 2. By stacking while repeating the stacking alternately, the bulkiness in the stacking can be reduced to about ½ compared to the case of bar stacking alone.
[0008]
Further, it is preferable that the cross-engaged engaged portion 5 also serves as a handle hole 26 through which a hand can be gripped. With such a configuration, the carriage main body 2 can be grasped by hand. It is possible to prevent lateral displacement when the carriage main body 2 is cross-stacked by using the handle hole 26 at the time of holding.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on embodiments shown in the accompanying drawings.
As shown in FIGS. 1 to 4, the cart body 2 has a rectangular shape in plan view. As shown in FIG. 4, a caster 1 is rotatably provided on the lower surface of the cart body 2. On both short sides of the main body 2 facing each other, a projecting portion 7 is integrally protruded upward along the short side, and the main body 2 with the projecting portion 7 protruding integrally is synthesized. It is made of resin. As shown in FIGS. 1, 2, 5, and 7, a bar stack engaged portion 4 is provided on the upper surface portion of the projecting portion 7, and in the embodiment shown in the accompanying drawings, the projecting portion 7. A hole is formed at both ends of the upper surface portion of each of the upper and lower portions to be engaged with the rod stacking engagement portion 4a, and a recess is formed at the center of the upper surface portion of the projecting base portion 7 so as to be engaged with the rod stacking portion 4b. Is provided. Further, holes 27 penetrating vertically are formed on the inner side slightly from the engaged portion 4a for sticking at both ends of the projecting portion 7 as shown in FIG.
[0010]
In the figure, reference numeral 8 denotes a reinforcing base metal fitting, and as shown in FIG. 15 (a), a frame insertion metal fitting 8b having a metal square tube shape is fixed to both ends of a metal beam member 8a. As shown in FIG. 4, the beam member 8a is fitted into the groove 9 formed in the lower surface of the carriage body 2 in parallel with the long side, and a rectangular tube-shaped frame insertion fitting 8b is provided on the projecting part 7. The reinforcing base fitting 8 is fixed to the cart body 2 by any fixing means. The reinforcing base bracket 8 is attached to the cart body 2 in this way to reinforce the cart body 2 made of synthetic resin, and the frame 10 described later is inserted into the square tube-shaped frame insertion bracket 8b. The frame 10 is inserted into the frame insertion portion for supporting the frame 10, and the frame 10 is supported by the frame insertion fitting 8b constituting the frame insertion portion so that the frame 10 can be supported securely and firmly. become. Needless to say, if the frame 10 has a round cylindrical shape, the frame insertion fitting 8b has a round cylindrical shape as shown in FIG. Further, a corner protector 29 made of rubber is provided at a corner portion of the outer side surface portion of the cart body 2.
[0011]
A handle hole 26 having an elongated hole shape is formed on both long sides of the carriage main body 2. In this embodiment, the handle hole 26 constitutes the engaged portion 5 for cross stacking. ing. The handle hole 26 is formed in a size that allows a hand to be inserted, and the carriage main body 2 can be held and moved by putting the hand into the handle hole 26 and grasping it.
[0012]
As shown in FIG. 12, the cart body 2 can be stacked with the short side portion of the lower surface portion of the upper cart body 2 placed on the upper surface portion of the projecting portion 7 of the lower cart body 2. In this stacked state, the casters 1 of the upper cart body 2 are opposed to the upper surface of the lower cart body 2. In other words, the caster 1 is attached to substantially the four corners of the bottom surface of the carriage main body 2 at a position slightly inward from the bottom surface just below the projecting base portion 7 of the carriage main body 2. The upper casters 1 are positioned between the projecting portions 7 of the lower cart body 2 in a state where the bars are stacked (in the embodiment shown in the accompanying drawings, the casters 1 are rotated to rotate the rotating shafts of the casters 1). The casters 1 are positioned between the projecting parts 7 of the lower car body 2 by making the direction substantially parallel to the long side of the car body 2). The protruding length is such that the casters 1 can be accommodated between the upper and lower cart bodies 2 in a state where the lengths are stacked (that is, the lower projection length of the casters 1 is the upper stage in the state where the cart bodies 2 are stacked) Caster 1 is in contact with the upper surface of the lower bogie body 2 Luke or upper caster 1 are set to be slightly floated from the upper surface of the carriage body 2 of the lower stage). In particular, when the caster 1 is placed between the upper and lower cart bodies 2 in a state where the protruding lengths of the projecting portions 7 are stacked, the casters for storing the upper casters 1 are arranged so as to float slightly from the lower cart body 2. No support recess is required, and when the cart body 2 is stacked / stored / moved in the vertical direction, it is placed up and down on the projecting portion 7 part. The truck body 2 does not collapse due to the rolling of 1. Further, the casters 1 facing each other in the direction parallel to the long side of the carriage main body 2 are attached at positions separated by a distance longer than the length of the short side of the carriage main body 2.
[0013]
Both short sides of the lower surface of the carriage body 2 are provided with bar stacking engaging portions 3, and in the embodiment shown in the accompanying drawings, as shown in FIGS. 3 and 4, the short side of the lower surface is shown. A bar stacking engagement portion 3 a is provided at each of both ends, and a bar stacking engagement portion 3 b is further provided at the center of the short side portion of the lower surface portion of the protrusion 7. Therefore, in the bar stacking state in which the short side portion of the upper cart body 2 is placed on the upper surface portion of the projecting portion 7 of the lower cart body 2, the bar stacking engaging portion 3a is used as the bar stacking engaged portion 4a. So that the bar stack engaging portion 3b is engaged with the bar stack engaged portion 4b so that the upper cart body 2 does not move laterally relative to the lower cart body 2 It is securely joined in the direction so that stable stacking is possible.
[0014]
By the way, as already described, the casters 1 facing each other in the direction parallel to the long side of the carriage main body 2 are attached at positions that are separated from each other by a distance longer than the length of the short side of the carriage main body 2. As shown in FIG. 3, the upper carriage body 2 is placed on the upper surface of the lower carriage body 2 in a state rotated by 90 ° in plan view, and the caster 1 on the lower surface of the upper carriage body 2 is placed on the lower side of the lower carriage body 2. The cross can be placed outside the side. In this cross-stacked state, the cross-engaging engagement portion 6 including a downward projecting portion for engaging with the cross-engaged engaged portion 5 constituting the handle hole 26 provided in the lower cart body 2. Is provided on the lower surface of the carriage body 2. For this reason, when the lower surface of the upper cart body 2 is placed on the upper surface of the lower cart body 2 and stacked, the handle body 26 of the lower cart body 2 has a cross-stack. Thus, the upper cart body 2 is securely joined in the vertical direction so as not to be laterally displaced with respect to the lower cart body 2 so that stable stacking can be performed. In addition, when this cross is stacked, two carts can be stacked low in bulk. And since the handle hole 26 used when holding the trolley | bogie main body 2 by hand is used also as a means for preventing the shift | offset | difference at the time of cross-stacking, a structure is simplified.
[0015]
Here, the length between the upper and lower cart bodies 2 is set to be equal to or greater than the thickness of the cart body 2 in a state where the cart bodies 2 are stacked. And by setting in this way, as shown in FIG. 14, the lower surface part of the 2nd-stage trolley body 2 is cross-stacked on the upper surface part of the 1st-stage trolley body 2, and further, the 1st-stage trolley It is possible to stick the third-stage carriage main body 2 on the protruding base portion 7 of the main body 2. In this way, by stacking as shown in FIG. 14 while alternately repeating cross-stacking and bar-stacking in the vertical direction, the bulkiness in the case of stacking can be approximately halved compared to the case of bar-stacking alone. is there.
[0016]
In the embodiment shown in FIG. 14, the protruding length from the upper surface portion of the cart body 2 to the upper surface portion of the projecting portion 7 is made longer than the thickness of the cart body 2, so that the cart body 2 is vertically stacked. The length between the bogie main bodies 2 is equal to or greater than the thickness of the bogie main body 2. However, the present invention is not limited to this, and as shown in FIG. 7 is provided with lower protrusions 7a on both short sides of the bottom surface of the cart body 2, and the cart body 2 is stacked in a rod state, even if the projection length to the top surface portion of the cart 7 is equal to or less than the thickness of the cart body 2. The lower surface portion of the lower protrusion portion 7a of the upper carriage body 2 is placed on the upper surface portion of the protrusion portion 7 of the lower carriage body 2 so that the protruding length and the lower protrusion portion 7a of the upper portion of the protrusion body 7 are increased. The total of the downward projecting length of the vehicle body may be longer than the thickness of the carriage body 2.
[0017]
In using the transporting carriage of the present invention, the carriage 10 is used by being fitted and attached to the frame insertion fitting 8b of the carriage body 2. The frame 10 has leg portions 10a projecting on both sides of the lower end portion. The leg portions 10a on both sides are fitted into a pair of frame insertion fittings 8b provided on the projecting portion 7, and the lower portion 13 of the frame 10 is projected. The frame 10 is projected on the projecting portion 7 by being placed on the platform 7. In this way, the frame 10 is erected on the projecting parts 7 on both sides. A placement object 16 is placed on the upper surface of the carriage body 2. Here, by installing the frame 10, it is possible to prevent the lateral displacement by the frame 10 even when the placement object 16 is stacked and placed in multiple stages and placed and the placement height increases. One end of the connecting rod 14 is rotatably attached to one frame 10, and the other end of the connecting rod 14 is detachably hooked to the hooking portion 15 of the other frame 10 to connect both frames 10. To do.
[0018]
Further, when the rod-stacking engaged portion 4a provided on the projecting portion 7 of the carriage main body 2 is constituted by a concave portion, the long sides of the adjacent truck main bodies 2 are brought into contact with each other as shown in FIG. 11 or in the case where the short sides of adjacent cart bodies 2 are in contact with each other as shown in FIG. 11, the cart bodies 2 are connected to each other by using an inverted U-shaped connecting member 17. It can be connected. That is, the fitting leg portions 18 on both sides of the inverted U-shaped connecting member 17 are adjacent to each other via the connecting member 17 by being fitted into the bar-stacking engaged portions 4a formed by the recesses of the adjacent cart body 2 respectively. The cart body 2 is connected. In this way, by connecting the cart main bodies 2 in a state where they are arranged side by side, it is possible to simultaneously move the casters 1 while rolling the casters 1 in a state where a plurality of the cart main bodies 2 on which the placing object 16 is placed are connected. It is also possible to place and move a large placing object 16 across a plurality of connected cart bodies 2.
[0019]
【The invention's effect】
In the first aspect of the present invention, as described above, the short side portion of the upper cart body is placed on the upper surface of the projecting base portion of the lower cart body, and the caster of the upper cart body is placed. One of a bar stacking engagement portion and a bar stack engagement portion for engaging each other in the vertical direction with the cart body vertically stacked so as to face the upper surface of the lower cart body Is provided on the upper surface portion of the projecting base portion and the other is provided on the lower surface portion of the short side portion of the carriage body, and the upper carriage body is placed on the upper face portion of the lower carriage body while being rotated 90 ° in plan view and the upper stage. A cruciform engaging portion and a crucifixed engaged portion for engaging each other in the vertical direction in a cross-stacked state in which the casters on the lower surface of the bogie body are positioned outside the long side of the lower bogie body. One of them is provided on the upper surface of the cart body and the other is installed on the lower surface of the cart body It can be stacked up and down with the cart body stacked vertically, or the cart body can be stacked and stored up and down in a cross-stacked state. The upper and lower trolley bodies are placed on the upper surface of the projecting pedestal, with the lower surface of the upper trolley body engaged, and the bar stack engaging portion and the bar stack engaged portion are engaged, and in a cross-stacked state. Then, the lower surface portion of the upper trolley body is placed on the upper surface portion of the trolley body, and is engaged by the engaged portion for crucifixing and the engaging portion for crucifixion. It is possible to reliably prevent the main body from shifting laterally and to perform stable stacking.
[0020]
Further, in the invention described in claim 2, in addition to the effect of the invention described in claim 1, the cross-shaped engaged portion is also used as a handle hole through which a hand can be gripped. Therefore, it is possible to prevent a lateral shift when the carriage body is cross-stacked using a handle hole when the carriage body is held and held by hand, and the configuration can be simplified.
[Brief description of the drawings]
FIG. 1 is a perspective view of a transport cart according to the present invention.
FIG. 2 is a plan view of the above.
FIG. 3 is a bottom view of the same.
FIG. 4 is a perspective view of the same upside down state.
FIG. 5 is a cross-sectional view in a direction parallel to the long side.
FIG. 6 is a cross-sectional view of another portion in a direction parallel to the long side.
FIG. 7 is a cross-sectional view in a direction parallel to the short side.
FIG. 8 is a perspective view showing a state in which the frame is attached.
FIG. 9 is a perspective view of a state in which the placement object is placed.
FIG. 10 is a perspective view showing a state in which the same transportation cart is connected with long sides adjacent to each other.
FIG. 11 is a perspective view showing a state in which the same transportation cart is connected with the short sides adjacent to each other.
FIG. 12 is a front view of the same bar stack state.
FIGS. 13A and 13B show a cross-stacked state, where FIG. 13A is a front view and FIG. 13B is a plan view.
FIGS. 14A and 14B show a state in which the same cross stack and bar stack are alternately stacked in the vertical direction, wherein FIG. 14A is a front view and FIG. 14B is a plan view.
15A is a perspective view of a reinforcing base metal fitting used in the present invention, and FIG. 15B is a perspective view of another example.
FIG. 16 is a front view showing another example in which the length between the upper and lower cart bodies is equal to or greater than the thickness of the cart body in a state where the cart bodies of the present invention are stacked.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Caster 2 Carriage body 3 Bar stack engaging part 4 Bar stack engaged part 5 Cross stack engaged part 6 Cross stack engaging part 7 Projection part 26 Handle hole

Claims

A projecting part is projected upward on both opposing short sides of a cart body having a rectangular shape in plan view with casters on the lower surface side, and the upper car body of the upper car body is on the upper surface of the projecting part of the lower car body. A bar stacking unit for engaging with each other in the vertical direction in a state where the cart body is vertically stacked so that the caster of the upper cart body faces the upper surface of the lower cart body with the short side portion being placed. One of the joint portion and the engaged portion for bar stacking is provided on the upper surface portion of the projecting portion and the other is provided on the lower surface portion of the short side portion of the cart body, and the upper cart body on the upper surface portion of the lower cart body In a cross-stacked state in which the casters on the lower surface of the upper trolley body are positioned outside the long side of the lower trolley body, and are engaged with each other in the vertical direction. One of the engaging part for stacking and the engaged part for crossing is a cart Dolly, characterized in that the other is provided on the upper surface portion of the body comprising on the lower surface of the carriage body.

2. The transport carriage according to claim 1, wherein the cross-stacked engaged portion also serves as a handle hole that can be gripped by putting a hand.