JP2004359184A - High floor truck with vertically movable bed - Google Patents

High floor truck with vertically movable bed Download PDF

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Publication number
JP2004359184A
JP2004359184A JP2003163068A JP2003163068A JP2004359184A JP 2004359184 A JP2004359184 A JP 2004359184A JP 2003163068 A JP2003163068 A JP 2003163068A JP 2003163068 A JP2003163068 A JP 2003163068A JP 2004359184 A JP2004359184 A JP 2004359184A
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JP
Japan
Prior art keywords
frame
lift
cylinder
floor
guide tube
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
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JP2003163068A
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Japanese (ja)
Inventor
Norihiro Ide
宣弘 井手
Makoto Takechi
良 武市
Tsuyoshi Yamashita
強志 山下
Shigeru Tanaka
茂 田中
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Atex Co Ltd
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Atex Co Ltd
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Application filed by Atex Co Ltd filed Critical Atex Co Ltd
Priority to JP2003163068A priority Critical patent/JP2004359184A/en
Publication of JP2004359184A publication Critical patent/JP2004359184A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a high floor truck with a vertically movable bed for carrying a heavy load with strong frames without breaking down a furrow nor damaging crops. <P>SOLUTION: A guide cylinder 11 for inserting an adjustment rod 10 of a tension rolling wheel 4 is fixed on an upper face of a left and right pair of truck frames 1, 1 extended in a fore-and-aft direction, and a lower face A of a lift base 12 extended inward in the guide cylinder 11 is formed to have an ascending inclination toward the inside of a machine body 8. A lift rail 14 rolling and guiding a roller 13 on the lower end of a crosslink mechanism 9 is provided on the upper face of the lift base 12, and the longitudinal total length of the lift rail 14 is made to be practically the same as the total length of the guide cylinder 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、畑の畝を跨いで走行し、野菜等の収穫作業や運搬作業に用いる荷台昇降が可能な高床運搬車に関するものである。
【0002】
【従来の技術】
【特許文献1】特許第3385378号公報
特許文献1には、クローラ式走行体上方の荷台を荷台下部両側部に設けた昇降装置で昇降可能に構成した高床式運搬車が開示されている。この高床式運搬車の駆動輪は荷台や走行操作部とともに昇降する構成であり、荷台昇降の度にクローラベルトの張りが変わる不都合を解決するため、昇降装置のリンク部材と従動輪が連動して移動する構成により荷台昇降時のクローラベルトの張りを一定に維持できるという技術である。
このクローラ式走行体は、荷台を上昇させると前方上方に位置した従動輪が後方に移動し、クローラベルト最前方の地面に対する角度が増し、段差乗り越え性能が低下するという不都合があり、荷台を上昇させることに伴って操作部も上昇するため、機体後方を歩行しながら走行操作を行う場合には、上方位置に上昇した操作部を作業者が操作し辛いものであった。
又、高床運搬車は、畝や作物を跨いで走行するため左右の走行装置内方と荷台下方に形成する空間部の幅が広く、高さの高いものでなくてはならない必要性がある。従って左右走行装置間を連結するフレームを地面に近い位置で横架した箱型形状の強固なフレームが形成できず、特に特許文献1のように、荷台と走行装置との間を荷台下部の左右両側に設けたリンク部材によって連結した構成では、フレーム強度が不足し、重量物の積載運搬が困難であるという問題があった。
【0003】
【発明が解決しようとする課題】
本発明は、強固なフレームを構成し重量物の運搬が可能であるとともに、畝をくずしたり作物を傷付けたりすることのない荷台昇降が可能な高床運搬車を提供することを課題とする。
【0004】
【課題を解決するための手段】
前後方向に延設した左右一対のトラックフレーム1,1下方に複数の接地転輪2を軸支し、その前方上方に位置するテンション転輪4と、後方上方に配置する駆動スプロケット5にクローラベルト3を巻き掛けた背高のクローラ走行装置6を備え、該クローラ走行装置6上方の荷台7を、機体8左右両側に設けるクロスリンク機構9によって昇降可能の高床運搬車において、前記トラックフレーム1,1上面に、テンション転輪4の調節杆10を挿入する案内筒11を固着し、該案内筒11上端部から機体8内方に向け延設するリフトベース12下面Aを機体8内方へ向け上り傾斜に形成し、該リフトベース12上面に、前記クロスリンク機構9下端に設けるローラ13を前後方向に転動案内するリフトレール14を設けるとともに、該リフトレール14の前後全長を前記案内筒11全長と略同長さに形成してなる荷台昇降が可能な高床運搬車の構成とする。
又、左右一対のトラックフレーム1及び、又は、案内筒11から上方へ向け支持部材15aを立設し、左右の支持部材15a,15a上部間を連結部材15bで連結した連結支持フレーム15を設け、該支持部材15aを、少なくともリフトベース12よりも機体8内方側に突出しない形状に形成するとともに、該連結部材15bを少なくともリフトベース12上面よりも上方に位置させ、更に、支持部材15a又は連結部材15bが荷台7最下限位置L決定のストッパを兼用することを特徴とする荷台昇降可能な高床運搬車の構成とする。
更に、左右一対のトラックフレーム1,1後端部から上方へ向け支脚16,16を立設し、その上部を横架連結した後部フレーム17を設ける一方、荷台7の後端左右中央部から上方へ向けシリンダステー18を立設し、前記後部フレーム17とシリンダステー18との間に油圧シリンダ19を介在するとともに、該油圧シリンダ19をシリンダステー18後方に並設したことを特徴とする荷台昇降可能な高床運搬車の構成とする。
【0005】
【発明の作用及び効果】
請求項1の発明にあっては、前後方向に延設した左右一対のトラックフレーム1,1上面に、テンション転輪4の調節杆10を挿入する案内筒11を固着してあるので上下二重構造の強固なフレームを形成することができ、案内筒11には調節杆10が挿入されるため、更に強固な構成となる。この強固なフレーム部に案内筒11上端部から機体8内方に向け延設し、下面Aを機体8内方へ向け上り傾斜に形成するリフトベース12を固着し、このリフトベース12上面に、クロスリンク機構9下端に設けるローラ13を前後方向に転動案内するリフトレール14を設けてあるので、強固なフレーム部に固着したリフトベース12やリフトレール14は、荷台7に積載の重量物を充分に支える強度を有し、最大積載量が多い運搬作業効率の良い高床運搬車を提供することができる。
又、トラックフレーム1の上面に案内筒11を固着した上下高さの高いフレーム部を形成し、その機体8内方側に設けたリフトベース12上面にリフトレール14を固着してあるので、機体8内方への突出部分を地面から高い位置に構成することができ、跨いだ畝をくずすことなく走行することができる。更に、リフトレール14よりも低く、畝に接近する位置となるリフトベース12下面Aを畝側面傾斜に沿った機体8内方へ向け上り傾斜に形成してあるので、畝をくずすことなく走行可能であるとともに、畝外方に広がった作物を傷付けることもない。
更に、リフトレール14の前後全長を案内筒11全長と略同長さに形成してあるので、重荷重を受けるリフトレール14をトラックフレーム1と案内筒11とが重合する強固なフレーム部で支持することができ、薄肉の小さな部材で高強度のフレームを構成することができる。
【0006】
請求項2の発明にあっては、トラックフレーム1と案内筒11とを固着した左右の強固なフレーム部間を連結支持フレーム15で連結してあるので、左右一対の走行装置6が強固に連結可能である。又、連結支持部材15左右両端の支持部材15aを、少なくともリフトベース12よりも機体8内方側に突出しない形状に形成するとともに、連結部材15bを少なくともリフトベース12上面よりも上方の高い位置に設けてあるので、畝を跨いで走行中に支持部材15aが内方の畝をくずすことがなく、連結部材15bが下方の作物を傷付けることのない大きな門型形状の空間部を形成することができる。
更に、支持部材15a又は連結部材15bが荷台7最下限位置L決定のストッパを兼用してあるので、荷台7及び荷台に積載した重量物等の荷重を確実強固に支持することができる。
【0007】
請求項3の発明にあっては、左右一対のトラックフレーム1,1後端部から上方へ向け支脚16,16を立設し、その上端部を横架連結した後部フレーム17を設ける一方、荷台7の後端左右中央部から上方へ向けシリンダステー18を立設し、前記後部フレーム17とシリンダステー18との間に油圧シリンダ19を介在するとともに、該油圧シリンダ19をシリンダステー18後方に並設してあるので、荷台7後端左右中央部に位置した油圧シリンダ19と、荷台7左右に設けたクロスリンク機構9により、油圧シリンダ19が1本の安価な構成で荷台7をこじれやねじれなく、スムーズに昇降させることができるとともに、荷台7から上方へ立設したシリンダステー18に油圧シリンダ19を並設してあるので、油圧シリンダ19の下端部が下方に突出することがなく、畝を跨いで走行した際に下方の作物を傷付けることなく走行させることができる。又、シリンダステー18後方に油圧シリンダ19を並設してあるので、シリンダステー18前方の荷台7に搭載する荷物によって油圧シリンダ19が傷付いたりすることがない。
【0008】
【発明の実施の形態】
前後方向に延設した左右一対のトラックフレーム1,1下方に転輪取付板20を固着し、その下方に複数の接地転輪2を軸支してある。該接地転輪2の一部は上下揺動可能のイコライザー転輪として使用してある。トラックフレーム1の上面にはテンション転輪4の調節杆10を挿入する案内筒11を溶着してある。最も後方に位置した接地転輪2の上方には駆動スプロケット5を設け、前記接地転輪2、テンション転輪4、駆動スプロケット5にクローラベルト3を巻き掛けた背高のクローラ走行装置6を備えてある。クローラベルト3の緊張調節は、案内筒11後端に設けた調節ボルト21により、調節杆10を前後移動させて行う。22は調節ボルト21のロックナットである。前記テンション転輪4の調節杆10下方には、接地転輪2の内、最も前方に位置した接地転輪2を軸支してあり、テンション転輪4が接地転輪2と共に前後移動するため、テンション転輪4と接地転輪2との間に形成されるクローラベルト3の地面に対する傾斜角度は、調節杆10を前後移動させても一定角度を維持することが可能である。
【0009】
トラックフレーム1,1後端部からは支脚16,16を立設し、支脚16,16は、トラックフレーム1,1から走行装置6の外側上方へ傾斜した後更に垂直上方に延設し、左右各々の支脚16,16上端部を連結して後部フレーム17を形成してある。尚、支脚16,16は、トラックフレーム1,1から走行装置6の内方上方へ傾斜延設することも可能である。後部フレーム17には、原動機23やギヤボックス24、及び操作部25を搭載してある。
走行装置6上方には荷台7を設け、該荷台7は左右に設けたクロスリンク機構9によって、水平状態のまま上下動するよう案内される。図1、図2に示す荷台7上に搭載しているのは、タバコ収穫の際使用する台車26であり、台車26の大きさの都合上、前枠28を水平に倒し、載置面を大きくして搭載してある。荷台7前端部には、後方の操作部25と連動し、同様の走行操作が可能な前操作部27を設けてある。尚、前操作部27は、旋回操作及び走行クラッチの入、切操作が可能である。
【0010】
荷台7の後端左右中央部には、上方へ向け平面視断面コの字状に形成したシリンダステー18を立設し、コの字状の開放側を機体8の後方に向けて荷台7に固着してある。シリンダステー18後部上端にピン28を横架し、ピン28に油圧シリンダ19を取着してある。該油圧シリンダは、側面視シリンダステー18後方に並設してあり、又、コの字形状のシリンダステー18内方に取着し、下端部を後部フレーム17に取着して、油圧シリンダ19が上下伸縮することで、荷台7がクロスリンク機構9に支持案内されて水平昇降可能に構成してある。
【0011】
案内筒11上面からは、機体8内方に向けリフトベース12を延設し、該リフトベース12の下面Aは機体8内方へ向け上り傾斜に形成してある。リフトベース12上面には、開放側を機体8内方へ向けた断面コの字形状のリフトレール14を取着してあり、該リフトレール14はクロスリンク機構9等の組立作業を容易にするため、脱着可能に構成してある。尚、この脱着はボルト29によって行う。
次にクロスリンク機構9について説明すると、走行装置6内方には主リンク9aと副リンク9bとによって交差してその中間をピン30によって枢支したクロスリンク機構9を、左右一対に設けてある。主リンク9aはその上端を荷台7前部に設ける枢軸31により枢支し、又、下端にはローラ13を取着するとともに、リフトレール14にローラ13を嵌合し、主リンク9a下端部のローラ13をリフトレール14に沿って前後方向に転動可能に構成してある。該リフトレール14は案内筒11の前後全長と略同長さに形成して固着することにより、強固なフレーム部を形成してある。案内筒11内方に固着の支持フレーム33は前方に向け延設してあり、その前端部に設ける枢軸34に副リンク9b下端を枢支し、又、副リンク9b上端にはローラ35を取着するとともに、荷台7に設けたレール32にローラ35を嵌合し、該ローラ35はレール32に沿って前後方向に転動案内される。
【0012】
リフトレール14及び案内筒11後端部からは支持部材15aを立設し、左右の支持部材15a,15a上端を連結部材15bで連結し、左右の走行装置6を強固に連結する連結支持フレーム15を設けてある。前記支持部材15aはリフトベース12より機体8内方側に突出せず、更に前記連結部材15bはリフトベース12上面よりも上方に位置させ、連結支持フレーム15下方に大きな空間部Bを形成し、畝を跨いで走行しても下方の畝をくずしたり作物を傷付けたりすることがない構成にしてある。又、荷台7を最下限位置Lに下降させた際、連結部材15b上面が荷台7底面と当接し、荷台7に加わる荷重を強固に支持することができる。尚、この連結支持フレーム15は、前後2ヶ所に横架することが望ましく、より重い荷重に耐え得るフレームを構成することができる。
【0013】
次にタバコの収穫作業を例に作業形態について説明する。タバコの畝と畝との間隔は約1200mmであり、この畝を跨いで高床運搬車で走行しながらタバコを荷台7上にあらかじめ搭載しておいた台車26に積み込む。収穫する際は、機体8前方、又は隣の畝のタバコを作業者S1,S2がタバコの茎を下方部分Cから切断しながらタバコを台車26へ積み込むか、又はあらかじめタバコの茎を下方部分Cから全て切断した後、高床運搬車を走行させながら拾い集めていくという作業形態である。図6に示すようにタバコの茎を下方部分Cで切断しても、残った茎が畝から突出しており、この茎を跨いで走行しながら収穫を行うこととなるため、左右の走行装置6,6間と荷台7下方には大きな空間部Bを設けてある。本実施の形態における高床運搬車は荷台7前端部の左右片側一側にも前操作部27を設けてあり、1人の作業者が収穫作業を行いながら、機体8を走行させることも可能である。
台車26がタバコで一杯になると、高床運搬車をトラックの荷台に接近させ、高床運搬車の荷台7高さをトラックの荷台高さに合わせ、台車26と共にタバコをトラック荷台へ移動させる。トラック荷台上には空の台車26を搭載しており、この空台車26を高床運搬車の荷台7上に載せて再び収穫作業を行う。
【0014】
本実施の形態の高床運搬車は、平面視において機体8後部の左側に操作部25を配置し、その操作部25右側には補助荷台7aを形成してある。該補助荷台7a右側には、手摺部36とステップ部37とを連続した単一のパイプにより形成した昇降ステップ38を取着してある。
該昇降ステップ38は補助荷台7aの前方側方から上方へ向け延設し後方に向け屈曲し補助荷台7a後端部まで延設後、垂下延設して手摺部36を形成し、更に補助荷台7a下方まで垂下延設し、補助荷台7a内方に向け屈曲延設後、上方に屈曲してステップ部37を形成してある。すなわち手摺部36と、平面視手摺部36と直交するステップ部37を単一部材の屈曲方向を変える技術のみで安全な昇降ステップ38を構成してある。この昇降ステップ38は安価に構成することができ、トラック荷台上への台車26移動等の、作業者が荷台7上に乗って作業を行う際の昇降を容易に行うことができる。又、操作部25の近傍に昇降ステップ38を取着してあるので、走行操作を行った作業者が、すぐ隣に位置する補助荷台7aに乗って台車26等の移動作業を行うことができ、作業効率が良い。
【0015】
荷台7の左右両側、及び前端には横枠41,41、及び前枠42を設けてあり、どちらも枠を水平状態に保持可能に構成してある。本実施の形態における高床運搬車は、荷台7前端部下方の左右一側方に前操作部27を設けてあり、前枠42を水平状態に倒した際前操作部27上方を覆ってしまい操作が困難になるという不都合があるため、前枠42を水平状態にしても前操作部27上方を覆い塞ぐことのない位置まで横方向にスライドさせることができる。例えば、図10に示すように、荷台7の左側前端部に前操作部27を設けた場合には、前枠42を前方に倒すとともに、右方向へスライドさせて、前操作部27上方に開放部を設けることができ、前操作部27の操作を容易に行うことができる。又、右方向へ前枠42をスライドさせると、右側の横枠41を水平状態に外方へ倒した時その前方に形成されるコーナー空間部43を前枠42で塞ぐことができ、荷台7の右側にはコーナー空間部43のない広い荷台7上面を形成することが可能である。
【図面の簡単な説明】
【図1】台車を搭載した全体側面図。
【図2】台車を搭載した全体正面図。
【図3】全体平面図。
【図4】荷台昇降状態を示す一部側面図。
【図5】要部の一部断正面図。
【図6】要部の一部断正面図。
【図7】要部の一部断正面図。
【図8】本実施例の作業状態図。
【図9】昇降用ステップを示す斜視図。
【図10】前枠スライド状態を示す斜視図。
【符号の説明】
1 トラックフレーム
2 接地転輪
3 クローラベルト
4 テンション転輪
5 駆動スプロケット
6 走行装置
7 荷台
8 機体
9 クロスリンク機構
10 調節杆
11 案内筒
12 リフトベース
13 ローラ
14 リフトレール
15 連結支持フレーム
15a 支持部材
15b 連結部材
16 支脚
17 後部フレーム
18 シリンダステー
19 油圧シリンダ
A 下面
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-floor truck that travels across a ridge in a field and that can lift and lower a carrier used for harvesting and transporting vegetables and the like.
[0002]
[Prior art]
[Patent Document 1] Japanese Patent No. 3385378 discloses a high-floor type transport vehicle in which a bed above a crawler-type traveling body can be raised and lowered by a lifting device provided on both sides of a lower part of the bed. The drive wheels of this stilt-type truck are configured to move up and down together with the loading platform and traveling operation unit.To solve the inconvenience of changing the tension of the crawler belt every time the loading platform is lifted and lowered, the link member of the lifting device and the driven wheels work together. This is a technique in which the tension of the crawler belt at the time of ascending / descending the loading platform can be kept constant by the moving configuration.
This crawler-type traveling body has the inconvenience that when the carrier is raised, the driven wheels located above and forward move rearward, the angle to the ground at the forefront of the crawler belt increases, and the ability to climb over steps decreases, and the carrier is raised. Since the operating unit also rises with this operation, it is difficult for the operator to operate the operating unit that has risen to the upper position when performing the traveling operation while walking behind the aircraft.
In addition, since a high-floor vehicle travels across ridges and crops, it is necessary that the space formed between the inside of the left and right traveling devices and the lower part of the carrier be wide and high. Therefore, it is impossible to form a strong box-shaped frame in which the frame connecting the left and right traveling devices is laid horizontally at a position close to the ground. In the configuration in which the link members are provided on both sides, there is a problem in that the strength of the frame is insufficient, and it is difficult to load and transport a heavy object.
[0003]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a high-floor transport vehicle that forms a strong frame, can transport heavy objects, and can move up and down a platform without breaking ridges or damaging crops.
[0004]
[Means for Solving the Problems]
A plurality of ground wheels 2 are pivotally supported below a pair of left and right track frames 1, 1 extending in the front-rear direction, and a tension wheel 4 located above the front thereof and a drive sprocket 5 disposed above the rear thereof are provided with a crawler belt. 3 is a tall crawler traveling device 6 around which the crawler traveling device 6 is mounted, and a loading platform 7 above the crawler traveling device 6 can be raised and lowered by a cross link mechanism 9 provided on both right and left sides of the body 8. A guide tube 11 for inserting the adjusting rod 10 of the tension wheel 4 is fixed to an upper surface of the lift base 12, and a lower surface A of a lift base 12 extending inward from the upper end of the guide tube 11 toward the body 8 is directed toward the body 8. A lift rail 14 is provided on the upper surface of the lift base 12 for guiding a roller 13 provided at the lower end of the cross link mechanism 9 to roll forward and backward. Bed lifting the front and rear total length obtained by forming the guide tube 11 overall length approximately the same length of the rail 14 is configured of a raised floor truck possible.
Further, a pair of left and right track frames 1 and / or a support member 15a is erected upward from the guide tube 11, and a connection support frame 15 is provided in which the upper portions of the left and right support members 15a, 15a are connected by a connection member 15b. The support member 15a is formed so as not to protrude at least inward of the body 8 from the lift base 12, and the connecting member 15b is positioned at least above the upper surface of the lift base 12, and the support member 15a The member 15b also serves as a stopper for determining the lowermost position L of the loading platform 7, so that the loading platform can be raised and lowered.
Further, supporting legs 16, 16 are erected upward from the rear ends of the pair of left and right track frames 1, 1 and a rear frame 17 is provided with its upper portion connected horizontally, while the rear end of the loading platform 7 is positioned upward from the left, right, center of the rear. Characterized in that a hydraulic cylinder 19 is interposed between the rear frame 17 and the cylinder stay 18 and the hydraulic cylinder 19 is juxtaposed behind the cylinder stay 18. A configuration of a high-floor transporter is possible.
[0005]
Function and effect of the present invention
According to the first aspect of the present invention, the guide cylinder 11 for inserting the adjusting rod 10 of the tension wheel 4 is fixed to the upper surface of the pair of right and left track frames 1 and 1 extending in the front-rear direction. Since a frame having a strong structure can be formed, and the adjusting rod 10 is inserted into the guide cylinder 11, the structure becomes more robust. A lift base 12 extending from the upper end of the guide tube 11 toward the inside of the fuselage 8 and having a lower surface A inclined upward toward the inside of the fuselage 8 is fixed to the strong frame portion. Since the lift rails 14 for rollingly guiding the rollers 13 provided at the lower end of the cross link mechanism 9 in the front-rear direction are provided, the lift base 12 and the lift rails 14 fixed to the strong frame portion allow the heavy loads loaded on the loading platform 7 to be moved. It is possible to provide a high-floor transport vehicle having sufficient supporting strength and a large maximum load capacity and high transport work efficiency.
Further, a frame part having a high vertical height to which the guide cylinder 11 is fixed is formed on the upper surface of the track frame 1 and the lift rail 14 is fixed to the upper surface of the lift base 12 provided inside the body 8. 8, the inwardly protruding portion can be formed at a position higher than the ground, and the vehicle can travel without breaking the straddling ridge. Furthermore, since the lower surface A of the lift base 12 which is lower than the lift rail 14 and is located at a position approaching the ridge is formed so as to be inclined upward toward the inside of the fuselage 8 along the ridge side surface inclination, the vehicle can travel without breaking the ridge. In addition, it does not damage crops that spread outside the ridges.
Furthermore, since the front and rear overall length of the lift rail 14 is formed to be substantially the same length as the entire length of the guide tube 11, the lift rail 14 which receives a heavy load is supported by a strong frame portion where the track frame 1 and the guide tube 11 overlap. It is possible to form a high-strength frame with thin and small members.
[0006]
According to the second aspect of the present invention, the left and right strong frame portions to which the track frame 1 and the guide tube 11 are fixed are connected by the connection support frame 15, so that the pair of right and left traveling devices 6 is strongly connected. It is possible. Also, the support members 15a at the left and right ends of the connection support member 15 are formed so as not to protrude at least inward of the body 8 from the lift base 12, and the connection member 15b is placed at least at a position higher than the upper surface of the lift base 12. Since it is provided, the support member 15a does not break the inner ridge during traveling across the ridge, and the connecting member 15b forms a large portal-shaped space portion that does not damage the crop below. it can.
Further, since the supporting member 15a or the connecting member 15b also serves as a stopper for determining the lowermost position L of the loading platform 7, the loading of the loading platform 7 and heavy objects loaded on the loading platform can be surely and firmly supported.
[0007]
According to the third aspect of the present invention, a pair of left and right track frames 1 and 1 is provided with support legs 16 and 16 erected upward from rear end portions thereof, and a rear frame 17 having upper ends thereof connected in a transverse manner is provided. 7, a cylinder stay 18 is erected upward from the left and right central portion of the rear end, a hydraulic cylinder 19 is interposed between the rear frame 17 and the cylinder stay 18, and the hydraulic cylinder 19 is arranged rearward of the cylinder stay 18. Since the hydraulic cylinder 19 is located at the left and right central portions of the rear end of the loading platform 7 and the cross link mechanism 9 provided on the left and right of the loading platform 7, the hydraulic cylinder 19 twists and twists the loading platform 7 with a single inexpensive configuration. The hydraulic cylinder 19 can be moved up and down smoothly, and the hydraulic cylinder 19 is juxtaposed to the cylinder stay 18 standing upright from the loading platform 7. Without part protrudes downward it can be run without damaging the lower crop when the vehicle travels across the ridges. Further, since the hydraulic cylinders 19 are arranged in parallel behind the cylinder stays 18, the hydraulic cylinders 19 are not damaged by luggage mounted on the carrier 7 in front of the cylinder stays 18.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
A wheel mounting plate 20 is fixed below a pair of left and right track frames 1 and 1 extending in the front-rear direction, and a plurality of ground wheels 2 are supported below the wheel mounting plate 20. A part of the ground wheel 2 is used as an equalizer wheel that can swing up and down. On the upper surface of the track frame 1, a guide cylinder 11 for inserting the adjusting rod 10 of the tension wheel 4 is welded. A drive sprocket 5 is provided above the rearmost ground wheel 2, and a tall crawler traveling device 6 in which a crawler belt 3 is wound around the ground wheel 2, the tension wheel 4, and the drive sprocket 5 is provided. It is. The tension of the crawler belt 3 is adjusted by moving the adjusting rod 10 back and forth by adjusting bolts 21 provided at the rear end of the guide cylinder 11. Reference numeral 22 denotes a lock nut of the adjustment bolt 21. Below the adjusting wheel 10 of the tension wheel 4, the frontmost ground wheel 2 of the ground wheels 2 is pivotally supported, and the tension wheel 4 moves back and forth together with the ground wheel 2. The inclination angle of the crawler belt 3 formed between the tension wheel 4 and the ground wheel 2 with respect to the ground can be kept constant even when the adjusting rod 10 is moved back and forth.
[0009]
The legs 16, 16 are erected from the rear ends of the track frames 1, 1, and the legs 16, 16 are inclined upward from the track frames 1, 1 to the outside of the traveling device 6, and then extend vertically upward. A rear frame 17 is formed by connecting the upper ends of the respective legs 16,16. Note that the legs 16, 16 can also be inclined and extend from the track frames 1, 1 to the inside and upward of the traveling device 6. The prime mover 23, the gear box 24, and the operation unit 25 are mounted on the rear frame 17.
A loading platform 7 is provided above the traveling device 6, and the loading platform 7 is guided by a cross link mechanism 9 provided on the left and right so as to move up and down in a horizontal state. Mounted on the loading platform 7 shown in FIGS. 1 and 2 is a truck 26 used at the time of tobacco harvesting. Due to the size of the truck 26, the front frame 28 is horizontally lowered and the mounting surface is lowered. It is mounted large. At the front end of the loading platform 7, a front operation unit 27 is provided, which is linked to the rear operation unit 25 and can perform the same traveling operation. The front operation section 27 is capable of turning operation and engaging / disengaging the traveling clutch.
[0010]
A cylinder stay 18 having a U-shaped cross section in plan view is erected upward at the left and right central portions of the rear end of the loading platform 7, and the U-shaped opening side is directed toward the rear of the body 8 to the loading platform 7. It is stuck. A pin 28 is mounted on the rear upper end of the cylinder stay 18 and a hydraulic cylinder 19 is mounted on the pin 28. The hydraulic cylinders are arranged side by side behind the cylinder stay 18 in a side view, and are mounted inside the U-shaped cylinder stay 18, and the lower end is mounted on the rear frame 17. The bed 7 is supported and guided by the cross link mechanism 9 so that it can be moved up and down horizontally.
[0011]
A lift base 12 extends from the upper surface of the guide cylinder 11 toward the inside of the body 8, and a lower surface A of the lift base 12 is formed to be inclined upward toward the inside of the body 8. On the upper surface of the lift base 12, a lift rail 14 having a U-shaped cross section with the open side facing the inside of the fuselage 8 is attached, and the lift rail 14 facilitates the assembly work of the cross link mechanism 9 and the like. Therefore, it is configured to be removable. This attachment / detachment is performed by the bolt 29.
Next, the cross link mechanism 9 will be described. A pair of left and right cross link mechanisms 9 are provided inside the traveling device 6 and intersected by the main link 9a and the sub link 9b and pivotally supported at an intermediate portion by a pin 30. . The upper end of the main link 9a is pivotally supported by a pivot 31 provided at the front of the loading platform 7, and a roller 13 is attached to a lower end of the main link 9a. The roller 13 is configured to be rollable in the front-rear direction along the lift rail 14. The lift rail 14 is formed to have substantially the same length as the front and rear overall length of the guide tube 11 and is fixed to form a strong frame portion. A support frame 33 fixed to the inside of the guide cylinder 11 extends forward, and pivotally supports the lower end of the sub-link 9b on a pivot shaft 34 provided at the front end thereof, and has a roller 35 at the upper end of the sub-link 9b. At the same time, the roller 35 is fitted to the rail 32 provided on the loading platform 7, and the roller 35 is guided to roll along the rail 32 in the front-rear direction.
[0012]
A support member 15a is erected from the lift rail 14 and the rear end of the guide tube 11, and the upper ends of the left and right support members 15a, 15a are connected by a connection member 15b, and the left and right traveling devices 6 are connected firmly to each other. Is provided. The support member 15a does not protrude inward of the fuselage 8 from the lift base 12, and the connecting member 15b is positioned above the upper surface of the lift base 12 to form a large space B below the connecting support frame 15, Even if it runs over a ridge, it is constituted so that a lower ridge is not broken or crops are damaged. Further, when the carrier 7 is lowered to the lowermost position L, the upper surface of the connecting member 15b abuts against the bottom of the carrier 7, and the load applied to the carrier 7 can be strongly supported. It is desirable that the connection support frame 15 be laid horizontally at two front and rear portions, and a frame capable of withstanding a heavier load can be formed.
[0013]
Next, the working mode will be described by taking a cigarette harvesting operation as an example. The interval between the ridges of the tobacco is about 1200 mm, and the tobacco is loaded on the carriage 26 previously mounted on the loading platform 7 while running on an elevated floor carrier across the ridge. At the time of harvesting, the workers S1 and S2 cut the tobacco stems from the lower part C and load the tobacco on the carriage 26, or cut the tobacco stems into the lower part C in advance. This is a form of work in which after cutting from all the vehicles, the vehicle is picked up while traveling on a high floor transport vehicle. As shown in FIG. 6, even when the stem of the tobacco is cut at the lower part C, the remaining stem protrudes from the ridge, and harvesting is performed while running across the stem. , 6 and below the loading platform 7 are provided with large spaces B. The high-floor carrier in the present embodiment is provided with a front operation section 27 on one of the left and right sides of the front end of the loading platform 7 so that one operator can run the machine body 8 while performing harvesting work. is there.
When the trolley 26 is full of cigarettes, the trolley is approached to the truck bed, the height of the trolley 7 of the trolley is adjusted to the height of the truck, and the tobacco is moved together with the trolley 26 to the truck bed. An empty truck 26 is mounted on the truck carrier, and the empty truck 26 is placed on the carrier 7 of the high-floor carrier to perform the harvesting operation again.
[0014]
In the high-floor carrier according to the present embodiment, the operation unit 25 is arranged on the left side of the rear part of the body 8 in plan view, and the auxiliary carrier 7a is formed on the right side of the operation unit 25. On the right side of the auxiliary carrier 7a, an elevating step 38 formed by connecting a handrail portion 36 and a step portion 37 with a single continuous pipe is attached.
The elevating step 38 extends upward from the front side of the auxiliary carrier 7a, bends backward, extends to the rear end of the auxiliary carrier 7a, and extends downward to form the handrail portion 36, The step portion 37 is formed to extend downward from the lower portion 7a, bend and extend inward of the auxiliary carrier 7a, and then bend upward. That is, the handrail portion 36 and the step portion 37 perpendicular to the handrail portion 36 in a plan view constitute a safe ascending and descending step 38 only by a technique of changing the bending direction of a single member. The lifting / lowering step 38 can be configured at a low cost, and can easily perform lifting / lowering when the worker gets on the loading platform 7 and performs work, such as moving the carriage 26 onto the truck loading platform. In addition, since the elevating step 38 is attached near the operation unit 25, the worker who has performed the traveling operation can move the trolley 26 or the like on the auxiliary carrier 7a located immediately adjacent thereto. Good work efficiency.
[0015]
Horizontal frames 41, 41 and a front frame 42 are provided on both the left and right sides and the front end of the loading platform 7, and both are configured to be able to hold the frames in a horizontal state. The raised floor transport vehicle in the present embodiment is provided with the front operation unit 27 on one side on the left and right below the front end of the loading platform 7, and covers the upper part of the front operation unit 27 when the front frame 42 is tilted horizontally to operate. Therefore, even if the front frame 42 is in a horizontal state, the front frame 42 can be slid laterally to a position where the front operation unit 27 is not covered. For example, as shown in FIG. 10, when the front operation unit 27 is provided at the left front end of the loading platform 7, the front frame 42 is tilted forward, and is slid rightward to open above the front operation unit 27. A section can be provided, and the operation of the front operation section 27 can be easily performed. When the front frame 42 is slid rightward, the corner space 43 formed in front of the horizontal frame 41 can be closed by the front frame 42 when the right horizontal frame 41 is tilted outward in a horizontal state. Can be formed on the right side of the large cargo bed 7 without the corner space 43.
[Brief description of the drawings]
FIG. 1 is an overall side view on which a cart is mounted.
FIG. 2 is an overall front view on which a cart is mounted.
FIG. 3 is an overall plan view.
FIG. 4 is a partial side view showing a loading platform elevating state.
FIG. 5 is a partially cutaway front view of a main part.
FIG. 6 is a partially cutaway front view of a main part.
FIG. 7 is a partially cutaway front view of a main part.
FIG. 8 is a work state diagram of the present embodiment.
FIG. 9 is a perspective view showing an elevating step.
FIG. 10 is a perspective view showing a front frame sliding state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Track frame 2 Grounding wheel 3 Crawler belt 4 Tension wheel 5 Drive sprocket 6 Traveling device 7 Carrying body 8 Body 9 Cross link mechanism 10 Adjusting rod 11 Guide cylinder 12 Lift base 13 Roller 14 Lift rail 15 Connection support frame 15a Support member 15b Connection member 16 Support leg 17 Rear frame 18 Cylinder stay 19 Hydraulic cylinder A Lower surface

Claims (3)

前後方向に延設した左右一対のトラックフレーム(1),(1)下方に複数の接地転輪(2)を軸支し、その前方上方に位置するテンション転輪(4)と、後方上方に配置する駆動スプロケット(5)にクローラベルト(3)を巻き掛けた背高のクローラ走行装置(6)を備え、該クローラ走行装置(6)上方の荷台(7)を、機体(8)左右両側に設けるクロスリンク機構(9)によって昇降可能の高床運搬車において、前記トラックフレーム(1),(1)上面に、テンション転輪(4)の調節杆(10)を挿入する案内筒(11)を固着し、該案内筒(11)上端部から機体(8)内方に向け延設するリフトベース(12)下面(A)を機体(8)内方へ向け上り傾斜に形成し、該リフトベース(12)上面に、前記クロスリンク機構(9)下端に設けるローラ(13)を前後方向に転動案内するリフトレール(14)を設けるとともに、該リフトレール(14)の前後全長を前記案内筒(11)全長と略同長さに形成してなる荷台昇降可能な高床運搬車。A pair of left and right track frames (1) extending in the front-rear direction, (1) a plurality of grounding wheels (2) are pivotally supported below, and a tension wheel (4) located in front of and above and a rearward and upward. A tall crawler traveling device (6) in which a crawler belt (3) is wound around a driving sprocket (5) to be disposed is provided, and a loading bed (7) above the crawler traveling device (6) is attached to the left and right sides of the body (8). A guide tube (11) for inserting an adjusting rod (10) of a tension wheel (4) into the upper surface of the track frame (1), (1) in a high-floor carrier that can be moved up and down by a cross link mechanism (9) provided in the vehicle. The lower surface (A) of the lift base (12) extending from the upper end of the guide tube (11) toward the body (8) is formed to be inclined upward toward the body (8). The cross link mechanism is provided on the upper surface of the base (12). 9) A lift rail (14) for rolling and guiding the roller (13) provided at the lower end in the front-rear direction is provided, and the entire length of the lift rail (14) in the front-rear direction is substantially the same as the length of the guide tube (11). A high-floor truck that can be lifted and lowered. 左右一対のトラックフレーム(1)及び、又は、案内筒(11)から上方へ向け支持部材(15a)を立設し、左右の支持部材(15a),(15a)上部間を連結部材(15b)で連結した連結支持フレーム(15)を設け、該支持部材(15a)を、少なくともリフトベース(12)よりも機体(8)内方側に突出しない形状に形成するとともに、該連結部材(15b)を少なくともリフトベース(12)上面よりも上方に位置させ、更に、支持部材(15a)又は連結部材(15b)が荷台(7)最下限位置(L)決定のストッパを兼用することを特徴とする請求項1記載の荷台昇降可能な高床運搬車。A support member (15a) is erected upward from the pair of left and right track frames (1) and / or the guide tube (11), and a connection member (15b) is provided between the left and right support members (15a) and (15a). A connecting support frame (15) is provided, and the supporting member (15a) is formed so as not to protrude at least inward of the body (8) from the lift base (12), and the connecting member (15b) is formed. Is positioned at least above the upper surface of the lift base (12), and the support member (15a) or the connecting member (15b) also serves as a stopper for determining the lowermost position (L) of the carrier (7). A high-floor transportable vehicle according to claim 1, which is capable of ascending and descending the loading platform. 左右一対のトラックフレーム(1),(1)後端部から上方へ向け支脚(16),(16)を立設し、その上部を横架連結した後部フレーム(17)を設ける一方、荷台(7)の後端左右中央部から上方へ向けシリンダステー(18)を立設し、前記後部フレーム(17)とシリンダステー(18)との間に油圧シリンダ(19)を介在するとともに、該油圧シリンダ(19)をシリンダステー(18)後方に並設したことを特徴とする請求項1、又は2記載の荷台昇降可能な高床運搬車。A pair of left and right track frames (1), (1) support legs (16), (16) are erected upward from the rear ends thereof, and a rear frame (17) having its upper portion connected horizontally is provided. 7) A cylinder stay (18) is erected upward from the left and right central portions of the rear end, and a hydraulic cylinder (19) is interposed between the rear frame (17) and the cylinder stay (18). 3. The high-floor transportable vehicle according to claim 1, wherein the cylinder (19) is arranged side by side behind the cylinder stay (18).
JP2003163068A 2003-06-09 2003-06-09 High floor truck with vertically movable bed Pending JP2004359184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003163068A JP2004359184A (en) 2003-06-09 2003-06-09 High floor truck with vertically movable bed

Applications Claiming Priority (1)

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JP2003163068A JP2004359184A (en) 2003-06-09 2003-06-09 High floor truck with vertically movable bed

Publications (1)

Publication Number Publication Date
JP2004359184A true JP2004359184A (en) 2004-12-24

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JP2003163068A Pending JP2004359184A (en) 2003-06-09 2003-06-09 High floor truck with vertically movable bed

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104097704A (en) * 2014-07-16 2014-10-15 浙江小精农机制造有限公司 Crawler type field transporting vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104097704A (en) * 2014-07-16 2014-10-15 浙江小精农机制造有限公司 Crawler type field transporting vehicle

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