JP2004114761A - Reinforcement frame structure for tractor - Google Patents

Reinforcement frame structure for tractor Download PDF

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Publication number
JP2004114761A
JP2004114761A JP2002278095A JP2002278095A JP2004114761A JP 2004114761 A JP2004114761 A JP 2004114761A JP 2002278095 A JP2002278095 A JP 2002278095A JP 2002278095 A JP2002278095 A JP 2002278095A JP 2004114761 A JP2004114761 A JP 2004114761A
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JP
Japan
Prior art keywords
tractor
axle case
loader
rear axle
pair
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
JP2002278095A
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Japanese (ja)
Inventor
Takeshi Aoki
青木 剛
Eiji Miyazaki
宮▲崎▼ 英司
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP2002278095A priority Critical patent/JP2004114761A/en
Priority to US10/652,582 priority patent/US7001134B2/en
Priority to KR1020030063527A priority patent/KR100540503B1/en
Publication of JP2004114761A publication Critical patent/JP2004114761A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To attach a structure body reinforcing a tractor car body and connecting a rear working machine even if a mounting part of the structure body is not formed on the tractor car body and to use a rear vertical frame and a front loader even if the structure body is removed. <P>SOLUTION: A pair of left/right rear supports 5 for supporting right and left leg parts 13A of the rear vertical frame 13 is provided on a rear axle case T8 projected from the tractor car body T to left and right sides. A pair of left/right loader attachment body 10 for detachably attaching the front loader F is provided on a midway part of the tractor car body T. Front and rear parts of right and left side frame member 6 are detachably connected to the rear support 5 and the loader attachment body 10. A pair of left/right connection bodies for connecting the rear working machine B is fitted and disposed to the rear axle case T8 and is detachably connected to the rear support 5 and the side frame member 6. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、トラクタ車体の中途部にフロントローダを、後方にバックホー等の後作業機をそれぞれ装着するためのトラクタの補強枠構造に関する。
【0002】
【従来の技術】
農業用トラクタ等においては、車体剛性、強度を増加させ、前後方向に作業機械を着脱自在連結可能にするために、トラクタ車体の左右側部に補強枠構造体を着脱可能に装着したものがある。
この種の従来の補強枠構造体においては、トラクタ車体から左右に突出した後車軸ケースに後部作業機を連結する左右一対の連結体を固定し、この左右連結体の上部に後立枠の左右脚部を受持可能な枠受け部を設け、この左右脚部と枠受け部とを着脱自在に連結している(例えば、特許文献1参照。)。そして、前記左右連結体は角パイプ材によって互いに連結されている。
【0003】
また、他の従来の補強枠構造体においては、トラクタ車体の左右側で車体長手方向に沿って延設する左右側枠部材と、この左右側枠部材の前・後・中途部の内の少なくとも1ヵ所を連結するクロスバー部材と、前部側をトラクタ車体の前部に連結するための前側連結機構と、後部側をトラクタ車体の後部に連結可能な後側連結機構と、フロントローダを装着可能にするためのローダ装着機構及び/又は後作業機を装着可能にするための作業機装着機構とを有している(例えば、特許文献2参照。)。そして、補強枠構造体の後部に後立枠の後支柱が連結されている。
【0004】
【特許文献1】
特開平6−32188号公報(特許請求の範囲参照)
【特許文献2】
特開平10−7014号公報(特許請求の範囲参照)
【0005】
【発明が解決しようとする課題】
前記両従来技術においては、補強枠構造体がトラクタ車体に対して着脱自在に固定されていて、その補強枠構造体に後立枠(ロプス)が立設状に装着されており、トラクタ車体に補強枠構造体の取り付け部を形成する必要があり、補強枠構造体を離脱してドローバヒッチを使用して牽引作業をする等の作業のときに、トラクタ車体をそれのみにしたい場合には、後立枠を取り付けるための装着具を別途必要とする、等の問題を有している。
【0006】
本発明は、このような従来技術の問題点を解決できるようにしたトラクタの補強枠構造を提供することを目的とする。
本発明は、トラクタ車体に補強枠構造体の取り付け部を形成しなくても、トラクタ車体を補強しかつ後部作業機を連結するための構造体を装着しておくことができ、その構造体を離脱しても後立枠、フロントローダ等を使用できるようにしたトラクタの補強枠構造を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明における課題解決のための具体的手段は、次の通りである。
第1に、トラクタ車体Tから左右に突出した後車軸ケースT8に後立枠13の左右脚部13Aを支持する左右一対の後支持体5を設け、トラクタ車体Tの中途部にフロントローダFを着脱自在に装着する左右一対のローダ装着体10を設け、前記後支持体5とローダ装着体10とに左右各側枠部材6の前後部を着脱自在に連結し、後部作業機Bを連結する左右一対の連結体7を後車軸ケースT8に嵌合配置しかつ前記後支持体5と側枠部材6とに着脱自在に連結していることである。
【0008】
これによって、トラクタ車体Tに補強枠構造体の取り付け部を形成しなくても、トラクタ車体Tを補強しかつ後部作業機Bを連結するための側枠部材6、連結体7等の構造体を装着しておくことができ、その構造体を離脱しても後立枠13、フロントローダF等を使用できる。
第2に、前記左右各後支持体5と側枠部材6の後部と連結体7とを共締めしていることである。
これによって、後支持体5、側枠部材6及び連結体7の3者の連結が簡単かつ容易になる。
【0009】
第3に、前記後車軸ケースT8と後支持体5との間、ローダ装着体10と側枠部材6との間、後支持体5と連結体7との間、の内の少なくともひとつに相互連結を補強する連結補強具8を設けていることである。
これによって、連結部分の相互連結補強ができる。
第4に、前記連結体7はトラクタ車体Tと後支持体5との間に位置しかつ上方開放の嵌合部7aを後車軸ケースT8に下方から嵌合しており、後車軸ケースT8に嵌合した前記嵌合部7aの前後部を後車軸ケースT8の上側で連結する嵌合部補強材9を設けていることである。
【0010】
これによって、後支持体5及び後輪T7を分解しなくとも、後支持体5への連結体7の着脱ができ、側枠部材6、連結体7等の構造体の着脱作業が簡便にできる。
【0011】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図5において、1はトラクタ・フロントローダ・バックホー(TLB)であり、トラクタ車体Tは左右一対の補強枠2によって補強され、その中途部から前方へフロントローダFが着脱自在に装着され、トラクタ車体Tの後部に後作業機としてのバックホーBが着脱自在に装着され、トラクタ車体Tの中途部下部にミッドマウントモアーMを装着可能になっている。
【0012】
前記トラクタ車体Tは、エンジンT2とクラッチハウジングT4とミッションケースT3とを前後に連結して車体本体T4を構成し、エンジンT2から前方へ前輪T5の前車軸ケースを縣架する前車軸フレームT6を突設し、ミッションケースT3の後部から左右側方へ後輪T7を縣架する後車軸ケースT8を突出している。
前記ミッションケースT3の上部に作業機昇降用油圧装置T10が取り付けられ、この油圧装置T10の上方には運転席3を前後反転自在にした運転席装置4が搭載され、運転席3の下方から操縦部T14にかけてフロアシートT11が設けられ、このフロアシートT11の左右側部には前記後輪T7用のフェンダT12が取り付けられている。
【0013】
前記左右後車軸ケースT8には、後立枠(ロプス)13の左右脚部13Aを支持する左右一対の後支持体5がボルトを介して着脱自在に装着されている。後立枠13は左右脚部13Aを横材で互いに連結し、この左右脚部13Aの上部にパイプを略コ字状に屈曲した枠本体13Bの下部両端を屈曲部13Cを介して折り畳み自在に連結しており、運転席3に着座した運転者の居住空間を確保している。
T13はエンジンT2を覆うボンネットで、その後部には前記操縦部T14が設けられている。また、前車軸フレームT6の前端には、ボンネットT13を保護するためのプロテクタT15が設けられている。
【0014】
フロントローダFは、左右マストF1の上部にブームF2の基部を上下揺動自在に枢支し、ブームF2の先端にバケットF3を掬い・ダンプ自在に枢支し、ブームF2をブームシリンダF4で、バケットF3をバケットシリンダF5でそれぞれ油圧駆動可能にしている。
前記マストF1は、ローダ装着体10のマスト受け材10Cに上側から嵌入しかつ下部を係止し、中途部をロックピンF6でロックするように構成されている。前記フロントローダFは、使用しないとき、ロックピンF6を抜くことによってローダ装着体10から離脱させることができる。
【0015】
ミッドマウントモアーMは、吊り持ち手段M1を介してトラクタ車体Tの腹下部に昇降自在に装着されており、ミッションケースT3から動力が伝達されて、ブレードを回転するように構成されている。このミッドマウントモアーMは、ローダ作業及び/又はバックホー作業をする場合は、トラクタ車体Tに対して吊り持ち手段M1と共に離脱させておくことができる。
バックホーBは基台フレームB1の前側に左右一対の取り付け体B2を有しており、基台フレームB1の後部に縦軸廻り揺動可能に揺動ブラケットB3を枢支し、基台フレームB1の上部に後向き運転席3から操縦可能な操縦装置B4を搭載し、基台フレームB1の左右に油圧駆動のアウトリガー(スタビライザ)T16を装備している。
【0016】
前記揺動ブラケットB3は1本のスイングシリンダB5によって左右スイング動作自在であり、この揺動ブラケットB3にブームB6及びブームシリンダB7の基部を枢支して、ブームシリンダB7でブームB6を上下揺動自在にし、ブームB6の先端にアームB8を枢支してアームシリンダB9で上下揺動自在にし、アームB8の先端にバケットB10を枢支して、バケットシリンダB11で掬い・ダンプ動作自在にしている。
前記バックホーBの左右各取り付け体B2には、上下に係合部B14、B15を備えており、上下係合部B14、B15は補強枠2の後端の左右各上下連結部11、12に着脱自在に連結され、トラクタ車体Tに対してバックホーBを着脱できるようになっている。
【0017】
前記上係合部B14と上連結部11とはピン孔であり、両者を同心状に対向させてピン14を挿入しており、下係合部B15は左右にわたるピン(連結棒)で形成され、下連結部12は上向き開放のフック形状(凹部)に形成され、フック状下連結部12に下係合部B15のピンを係合させた状態で、取り付け体B2を回動させ、上係合部B14と上連結部11とを対向させてピン14を挿入するようになっている。
なお、前記上連結部11にピンを設け、上係合部B14にピンと自動係合するマウント装置を装備してもよい。また、下連結部12は後述する連結体7に厚板を溶着して形成しているが、連結体7と一体成形してもよい。
【0018】
図1、2、5において、前述した補強枠2の取り付け構造を詳述する。
トラクタ車体Tから左右に突出した後車軸ケースT8に後立枠13の左右脚部13Aを支持する左右一対の後支持体5が設けられ、トラクタ車体Tの前後中途部にフロントローダFを着脱自在に装着する左右一対のローダ装着体10が設けられており、この後支持体5とローダ装着体10を繋ぐように、側枠部材6と連結体7とが設けられている。
後支持体5は脚部13Aの下端に固着の底板5Aに、脚部13Aの下部背面に固着の背板5BをT字状に固着し、背板5Bの下部から前方へアングル材で形成した取付板5Cを突出し、また背板5Bからヒレ板5Dを後方突出状に固着し、このヒレ板5Dの下部にチェックチェーン連結部5Eを形成している。
【0019】
前記後支持体5は、後車軸ケースT8に前記底板5Aを載置しかつ前記背板5Bを背面からあてがい、それらを複数本のボルトで固定しており、後立枠13の左右脚部13Aが後傾斜しているので、後支持体5も後傾斜状態に取り付けられている。
ローダ装着体10は、横向きの筒体10Aのトラクタ車体T側の内端部に取付けブラケット10Bを有し、外端部に平面視略コ字状のマスト受け材10Cを有しており、マスト受け材10Cから下方に連結片10Dが一体的に突設されている。前記取付けブラケット10Bがトラクタ車体Tに形成した取り付け部T16にボルト固定されることにより、ローダ装着体10はトラクタ車体Tに対して左右突出状に装着される。
【0020】
左右各側枠部材6は帯板材で形成されており、後部が後支持体5の取付板5Cとボルト15を介して連結され、前部がローダ装着体10の連結片10Dとボルト連結されており、また、この前部はローダ装着体10と平面視略L字形状の連結補強具8Fを介して連結されていて、両者の連結が補強されている。
後部作業機Bを連結する左右各連結体7は、前部の上下幅が小さく、側枠部材6を挟む挟持板16をボルト固定することにより、側枠部材6の前後中途部に対して連結されていて、左右方向の過大負荷が加わったときに相対移動可能になっている。前記連結体7と挟持板16との間には、ボルト締結位置にスペーサが介在されており、側枠部材6を挟圧しすぎないようにしている。
【0021】
連結体7の後部は上下幅が大きく形成されていて、その上下に前記上下連結部11、12が形成されており、後支持体5のヒレ板5Dに連結補強具8Rを介して連結されている。
連結体7の前後中間部には上方開放の嵌合部7aが形成されており、嵌合部7aを後車軸ケースT8に下方から嵌合するようにして、左右方向において、トラクタ車体Tと後支持体5との間に配置される。
この連結体7は、後車軸ケースT8に嵌合した状態で、嵌合部補強材9で前記嵌合部7aの前後部を後車軸ケースT8の上側で連結して、嵌合部7aを形成したことによる強度低下を防ぐようにしている。嵌合部補強材9は帯板を上方凸の略くの字形状に形成され、後車軸ケースT8と干渉しないように配置されている。
【0022】
また、連結体7の中間部は、前記後支持体5と側枠部材6の後部とを連結するボルト15によって共締めされている。即ち、側枠部材6と連結体7との間にスペーサ17を介在させ、後支持体5の取付板5Cと側枠部材6とを連結するボルト15をスペーサ17及び連結体7にも貫通させて、ナットで締め上げて固定している。
前記左右各側枠部材6は連結補強具8Fの後側でS字状に屈曲されていて、後部側がトラクタ車体Tに近づいており、左右各連結体7はボルト15の連結部より前側でS字状に屈曲されていて、前部がトラクタ車体Tから遠ざかっていて、側枠部材6に面接するようになっている。
【0023】
前記連結体7と後支持体5及び側枠部材6との取り付け点は3点になるが、連結体7と側枠部材6との連結は挟持板16による挟持であるので位置調整が可能であり、この連結をボルト締結で行ってもよく、ボルト締結の場合は、ボルト貫通孔をバカ孔又は長孔に形成しておいて、それぞれの位置を調整できるようにしておくことが好ましい。
前記側枠部材6、連結体7、挟持板16、連結補強具8F、8R等の構造体の連結は、総てボルト締結であるので着脱自在であり、トラクタ車体Tに後支持体5及びローダ装着体10を装着したままの状態で、前記補強枠2の各構造体を着脱することができ、補強枠2の各構造体はトラクタ車体Tに直接的に装着されることなくトラクタ車体Tを補強する。
【0024】
図3、4は中間の連結補強具8Cを設けた例を示しており、この中間連結補強具8Cは連結ブラケット19と支持ブラケット20とを有し、連結ブラケット19は後車軸ケースT8の下面にボルト固定する下板19aに縦板19bを直角に固着して形成されており、支持ブラケット20は1枚の平板で、上部に連結ブラケット19の縦板19bをボルト固定し、下部が側枠部材6と連結体7との間でそれらにボルト15で共締め固定されている。前記支持ブラケット20の下部にスペーサ17を一体成形してもよい。
【0025】
前記中間連結補強具8Cは、下板19aと後車軸ケースT8との間及び縦板19bと支持ブラケット20との間で、前後、左右及び上下に位置調整自在であり、位置調整しながら相互に固定されており、後車軸ケースT8に対する後支持体5の取り付け強度を高めるとともに、側枠部材6及び連結体7の後支持体5に対する取り付け強度も高めることができる。
従って、連結体7は後車軸ケースT8の前後両方で後支持体5と連結されることになり、また、後車軸ケースT8に強固に支持されることになり、後部作業機Bの連結支持強度を向上できる。
【0026】
なお、本発明は前記実施形態における各部材の形状及びそれぞれの前後・左右・上下の位置関係は、図1〜5に示すように構成することが最良である。しかし、前記実施形態に限定されるものではなく、部材、構成を種々変形したり、組み合わせを変更したりすることもできる。
例えば、連結補強具8Rを連結体7の下連結部12近傍とヒレ板5Dとの間に設けたり、中間連結補強具8Cを嵌合部補強材9と後車軸ケースT8との間に設けりしてもよい。
【0027】
また、中間連結補強具8Cを設ける代わりに、後支持体5の取付板5Cを後車軸ケースT8にボルト締結しながら連結体7に連結するようにしてもよい。
【0028】
【発明の効果】
以上詳述した本発明によれば、トラクタ車体Tに構造体の取り付け部を形成しなくても、トラクタ車体Tを補強しかつ後部作業機Bを連結するための側枠部材6、連結体7等の構造体を装着しておくことができ、その構造体を離脱しても後立枠13、フロントローダF等を使用できる。
【図面の簡単な説明】
【図1】本発明の実施の形態を示す側面図である。
【図2】同平面図である。
【図3】連結補強具を設けた例を示す側面図である。
【図4】同平面図である。
【図5】トラクタ・ローダ・バックホーの概略全体側面図である。
【符号の説明】
1    トラクタ・ローダ・バックホー
2    補強枠
5    後支持体
6    側枠部材
7    連結体
7a   嵌合部
8    連結補強具
10   ローダ装着体
13   後立枠
13A  脚部
B    後部作業機
F    フロントローダ
T    トラクタ車体
T8   後車軸ケース
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tractor reinforcing frame structure for mounting a front loader in a middle part of a tractor body and a rear working machine such as a backhoe in the rear.
[0002]
[Prior art]
Some agricultural tractors have detachable reinforcement frame structures on the left and right sides of the tractor body in order to increase the rigidity and strength of the vehicle body and to allow the work machine to be detachably connectable in the front-rear direction. .
In this type of conventional reinforcing frame structure, a pair of right and left connecting bodies for connecting a rear working machine is fixed to a rear axle case protruding left and right from a tractor vehicle body, and left and right of a rear standing frame are provided above the left and right connecting bodies. A frame receiving portion capable of receiving a leg portion is provided, and the left and right legs and the frame receiving portion are detachably connected to each other (for example, see Patent Document 1). And the said left-right connection body is mutually connected by the square pipe material.
[0003]
Further, in another conventional reinforcing frame structure, left and right frame members extending along the longitudinal direction of the vehicle body on the left and right sides of the tractor vehicle body, and at least one of front, rear, and halfway portions of the left and right frame members. A crossbar member that connects one place, a front connection mechanism that connects the front part to the front part of the tractor body, a rear connection mechanism that can connect the rear part to the rear part of the tractor body, and a front loader are mounted. It has a loader mounting mechanism for enabling it and / or a working machine mounting mechanism for making it possible to mount a post-working machine (for example, see Patent Document 2). A rear support of the rear standing frame is connected to a rear portion of the reinforcing frame structure.
[0004]
[Patent Document 1]
JP-A-6-32188 (refer to claims)
[Patent Document 2]
JP-A-10-7014 (refer to claims)
[0005]
[Problems to be solved by the invention]
In both of the above prior arts, a reinforcing frame structure is detachably fixed to a tractor vehicle body, and a rear standing frame (lops) is attached to the reinforcing frame structure in an upright manner. When it is necessary to form a mounting portion for the reinforcing frame structure, and when the tractor body is to be used only when detaching the reinforcing frame structure and performing towing work using a drawbar hitch, There is a problem that a mounting tool for mounting the rear frame is separately required.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a tractor reinforcing frame structure capable of solving such a problem of the related art.
According to the present invention, a structure for reinforcing a tractor body and connecting a rear working machine can be mounted without forming a mounting portion of a reinforcing frame structure on the tractor body. It is an object of the present invention to provide a tractor reinforcement frame structure in which a rear frame, a front loader, and the like can be used even when the tractor is detached.
[0007]
[Means for Solving the Problems]
The specific means for solving the problems in the present invention are as follows.
First, a pair of left and right rear supports 5 that support the left and right legs 13A of the rear stand frame 13 are provided on a rear axle case T8 that protrudes left and right from the tractor body T, and a front loader F is provided in the middle of the tractor body T. A pair of left and right loader mounts 10 to be removably mounted is provided. The front and rear portions of the left and right side frame members 6 are detachably connected to the rear support 5 and the loader mount 10, and the rear work machine B is connected. That is, a pair of left and right connecting bodies 7 are fitted and disposed in the rear axle case T8 and are detachably connected to the rear supporting body 5 and the side frame member 6.
[0008]
Accordingly, the structure such as the side frame member 6 and the connecting body 7 for reinforcing the tractor body T and connecting the rear working machine B can be provided without forming the mounting portion of the reinforcing frame structure on the tractor body T. The rear frame 13 and the front loader F can be used even if the structure is detached.
Second, the right and left rear supports 5, the rear portions of the side frame members 6, and the connecting members 7 are fastened together.
Thereby, connection of the three members of the rear support 5, the side frame member 6, and the connecting member 7 becomes simple and easy.
[0009]
Third, at least one of the space between the rear axle case T8 and the rear support 5, the space between the loader mounting body 10 and the side frame member 6, and the space between the rear support 5 and the connecting body 7 is provided. That is, a connection reinforcing tool 8 for reinforcing the connection is provided.
Thereby, the interconnecting reinforcement of the connecting portion can be achieved.
Fourth, the connecting member 7 is located between the tractor body T and the rear support member 5 and has a fitting portion 7a which is open upward and is fitted to the rear axle case T8 from below, and is connected to the rear axle case T8. The present invention is provided with a fitting portion reinforcing member 9 for connecting the front and rear portions of the fitted fitting portion 7a above the rear axle case T8.
[0010]
Thus, the connecting body 7 can be attached to and detached from the rear supporting body 5 without disassembling the rear supporting body 5 and the rear wheel T7. .
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 5, reference numeral 1 denotes a tractor front loader backhoe (TLB). A tractor body T is reinforced by a pair of left and right reinforcing frames 2, and a front loader F is removably mounted forward from a middle part thereof. A backhoe B as a post-working machine is detachably attached to the rear of T, and a mid-mount mower M can be attached to a lower part of the tractor body T in the middle.
[0012]
The tractor body T is configured by connecting an engine T2, a clutch housing T4, and a transmission case T3 back and forth to form a body body T4, and a front axle frame T6 for suspending a front axle case of a front wheel T5 forward from the engine T2. A rear axle case T8 that protrudes and suspends a rear wheel T7 from the rear of the transmission case T3 to the left and right sides protrudes.
A hydraulic device T10 for lifting and lowering the work implement is mounted on the upper part of the transmission case T3, and a driver's seat device 4 is provided above the hydraulic device T10 so that the driver's seat 3 can be turned back and forth. A floor sheet T11 is provided across the portion T14, and fenders T12 for the rear wheels T7 are attached to left and right sides of the floor sheet T11.
[0013]
The left and right rear axle case T8 has a pair of left and right rear supports 5 that support the left and right legs 13A of the rear stand frame (lops) 13 detachably mounted via bolts. The rear frame 13 connects the left and right legs 13A to each other with a horizontal member, and the lower ends of a frame body 13B obtained by bending a pipe in a substantially U-shape at the upper portion of the left and right legs 13A so as to be freely foldable via a bent portion 13C. It is connected and secures a living space for the driver sitting in the driver's seat 3.
T13 is a hood covering the engine T2, and the control section T14 is provided at the rear thereof. At the front end of the front axle frame T6, a protector T15 for protecting the hood T13 is provided.
[0014]
The front loader F pivotally supports the base of the boom F2 at the upper part of the left and right masts F1 so as to swing up and down, and pivots the bucket F3 at the tip of the boom F2 so as to be able to scoop and dump the boom F2. The bucket F3 can be hydraulically driven by a bucket cylinder F5.
The mast F1 is configured to fit into the mast receiving member 10C of the loader mounting body 10 from above, lock the lower part, and lock the middle part with the lock pin F6. When not in use, the front loader F can be detached from the loader mounting body 10 by pulling out the lock pin F6.
[0015]
The mid-mount mower M is attached to the lower part of the abdomen of the tractor body T via lifting means M1 so as to be able to move up and down, and power is transmitted from a transmission case T3 to rotate the blade. When performing the loader operation and / or the backhoe operation, the mid-mount mower M can be detached from the tractor vehicle body T together with the suspension means M1.
The backhoe B has a pair of right and left attachment bodies B2 on the front side of the base frame B1, and pivotally supports a swing bracket B3 at the rear of the base frame B1 so as to be swingable about a vertical axis. A steering device B4 that can be steered from the rearward facing driver's seat 3 is mounted on the upper part, and a hydraulically driven outrigger (stabilizer) T16 is provided on the left and right sides of the base frame B1.
[0016]
The swinging bracket B3 can freely swing left and right by one swing cylinder B5. The swinging bracket B3 pivotally supports the boom B6 and the base of the boom cylinder B7, and swings the boom B6 up and down with the boom cylinder B7. The arm B8 is pivotally supported at the tip of the boom B6, and is vertically swingable with an arm cylinder B9. The bucket B10 is pivotally supported at the tip of the arm B8, and scooping and dumping is freely performed with the bucket cylinder B11. .
The left and right attachment bodies B2 of the backhoe B are provided with upper and lower engaging portions B14 and B15, respectively. The upper and lower engaging portions B14 and B15 are attached to and detached from the left and right upper and lower connecting portions 11 and 12 at the rear end of the reinforcing frame 2. The backhoe B is freely connected so that the backhoe B can be attached to and detached from the tractor body T.
[0017]
The upper engaging portion B14 and the upper connecting portion 11 are pin holes, and the pin 14 is inserted with the two concentrically opposed to each other. The lower engaging portion B15 is formed of a left and right pin (connecting rod). The lower connecting portion 12 is formed in an upwardly open hook shape (concave portion). With the pin of the lower engaging portion B15 engaged with the hook-shaped lower connecting portion 12, the mounting body B2 is rotated to The pin 14 is inserted with the joint portion B14 and the upper connecting portion 11 facing each other.
Note that a pin may be provided on the upper connecting portion 11 and a mounting device that automatically engages with the pin may be provided on the upper engaging portion B14. The lower connecting portion 12 is formed by welding a thick plate to the connecting body 7 described later, but may be formed integrally with the connecting body 7.
[0018]
1, 2 and 5, the mounting structure of the above-described reinforcing frame 2 will be described in detail.
A pair of left and right rear supports 5 for supporting the left and right legs 13A of the rear stand frame 13 are provided on a rear axle case T8 protruding left and right from the tractor body T, and a front loader F is detachably attached to a front and rear halfway portion of the tractor body T. A pair of left and right loader mounting bodies 10 to be mounted on the vehicle are provided, and thereafter, a side frame member 6 and a connecting body 7 are provided so as to connect the support body 5 and the loader mounting body 10.
The rear support 5 has a bottom plate 5A fixed to the lower end of the leg 13A, and a back plate 5B fixed to the lower back surface of the leg 13A fixed in a T-shape, and is formed by an angle material from the lower portion of the back plate 5B to the front. The mounting plate 5C protrudes, and the fin plate 5D is fixed to the back plate 5B so as to protrude rearward, and a check chain connecting portion 5E is formed below the fin plate 5D.
[0019]
The rear support 5 has the bottom plate 5A placed on a rear axle case T8 and the back plate 5B applied from the back surface, and these are fixed with a plurality of bolts. Are tilted rearward, so that the rear support 5 is also mounted in the rear tilted state.
The loader mounting body 10 has a mounting bracket 10B at the inner end of the sideways cylindrical body 10A on the tractor body T side, and has a substantially U-shaped mast receiving member 10C at the outer end. A connecting piece 10D is integrally protruded downward from the receiving member 10C. When the mounting bracket 10B is bolted to a mounting portion T16 formed on the tractor vehicle body T, the loader mounting body 10 is mounted on the tractor vehicle body T so as to protrude left and right.
[0020]
Each of the left and right side frame members 6 is formed of a band plate material, the rear portion is connected to the mounting plate 5C of the rear support 5 via bolts 15, and the front portion is connected to the connecting pieces 10D of the loader mounting body 10 by bolts. The front portion is connected to the loader mounting body 10 via a connection reinforcement 8F having a substantially L-shape in plan view, and the connection between the both is reinforced.
The left and right connecting bodies 7 for connecting the rear working machine B are connected to the front and rear halfway portions of the side frame member 6 by bolting a holding plate 16 that sandwiches the side frame member 6 with a small vertical width at the front. It is relatively movable when an excessive load in the left-right direction is applied. A spacer is interposed between the connecting body 7 and the holding plate 16 at a bolt fastening position so as to prevent the side frame member 6 from being pressed too much.
[0021]
The rear part of the connecting body 7 is formed with a large vertical width, and the upper and lower connecting parts 11 and 12 are formed on the upper and lower sides thereof. The connecting part 7 is connected to the fin plate 5D of the rear support 5 via the connecting reinforcement 8R. I have.
An upper open fitting portion 7a is formed in the front and rear middle portion of the connecting body 7, and the fitting portion 7a is fitted to the rear axle case T8 from below, so that the tractor body T and the rear tractor body T in the left and right direction. It is arranged between the support 5.
When the connecting body 7 is fitted to the rear axle case T8, the front and rear portions of the fitting portion 7a are connected by the fitting portion reinforcing member 9 above the rear axle case T8 to form the fitting portion 7a. This prevents the strength from dropping due to this. The fitting portion reinforcing member 9 is formed so that the band plate is formed in a substantially U-shape convex upward and is arranged so as not to interfere with the rear axle case T8.
[0022]
The intermediate portion of the connector 7 is fastened together by bolts 15 connecting the rear support 5 and the rear portion of the side frame member 6. That is, the spacer 17 is interposed between the side frame member 6 and the connecting body 7, and the bolt 15 connecting the mounting plate 5 </ b> C of the rear support 5 and the side frame member 6 is made to penetrate the spacer 17 and the connecting body 7. And tighten it up with nuts.
The left and right side frame members 6 are bent in an S-shape at the rear side of the connection reinforcing member 8F, the rear side is close to the tractor body T, and the left and right connection bodies 7 are S at the front side of the connection portion of the bolt 15. The front part is away from the tractor vehicle body T and comes into contact with the side frame member 6.
[0023]
There are three points of attachment of the connecting member 7 to the rear support member 5 and the side frame member 6, but the connection between the connecting member 7 and the side frame member 6 is performed by holding by the holding plate 16, so that the position can be adjusted. Yes, this connection may be performed by bolt fastening. In the case of bolt fastening, it is preferable to form a bolt through hole or a long hole so that the respective positions can be adjusted.
All of the structural members such as the side frame member 6, the connecting member 7, the holding plate 16, and the connecting reinforcing members 8F and 8R are connected by bolts so that they can be freely attached and detached. The respective structures of the reinforcing frame 2 can be attached and detached while the mounting body 10 is mounted, and the respective structures of the reinforcing frame 2 can be mounted on the tractor body T without being directly mounted on the tractor body T. Reinforce.
[0024]
3 and 4 show an example in which an intermediate connection reinforcing member 8C is provided. The intermediate connection reinforcing member 8C has a connection bracket 19 and a support bracket 20, and the connection bracket 19 is provided on the lower surface of the rear axle case T8. A vertical plate 19b is formed by fixing a vertical plate 19b at right angles to a lower plate 19a to be bolted, the support bracket 20 is a single flat plate, and the vertical plate 19b of the connection bracket 19 is bolted to the upper portion, and the lower portion is a side frame member. Between the connector 6 and the connector 7, they are fixed together by bolts 15. The spacer 17 may be integrally formed below the support bracket 20.
[0025]
The intermediate connection reinforcing member 8C can be adjusted in front and rear, left and right, and up and down between the lower plate 19a and the rear axle case T8 and between the vertical plate 19b and the support bracket 20. It is fixed, so that the mounting strength of the rear support 5 to the rear axle case T8 can be increased, and the mounting strength of the side frame member 6 and the connecting body 7 to the rear support 5 can be increased.
Therefore, the connecting body 7 is connected to the rear support body 5 both before and after the rear axle case T8, and is firmly supported by the rear axle case T8. Can be improved.
[0026]
In the present invention, it is best that the shape of each member and the positional relationship between front and rear, left and right, and up and down in the above embodiment are configured as shown in FIGS. However, the present invention is not limited to the above-described embodiment, and the members and the configuration can be variously modified and the combination can be changed.
For example, the connection reinforcement 8R is provided between the vicinity of the lower connection portion 12 of the connection body 7 and the fin plate 5D, or the intermediate connection reinforcement 8C is provided between the fitting reinforcement 9 and the rear axle case T8. May be.
[0027]
Further, instead of providing the intermediate connecting reinforcement 8C, the mounting plate 5C of the rear support 5 may be connected to the connecting body 7 while being bolted to the rear axle case T8.
[0028]
【The invention's effect】
According to the present invention described in detail above, the side frame member 6 and the connecting body 7 for reinforcing the tractor body T and connecting the rear working machine B without forming a mounting portion of the structure on the tractor body T. And the like, and even if the structure is detached, the rear standing frame 13, the front loader F, and the like can be used.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view showing an example in which a connecting reinforcement is provided.
FIG. 4 is a plan view of the same.
FIG. 5 is a schematic overall side view of a tractor / loader / backhoe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tractor loader backhoe 2 Reinforcement frame 5 Rear support 6 Side frame member 7 Connection body 7a Fitting part 8 Connection reinforcement tool 10 Loader mounting body 13 Standing frame 13A Leg B Rear work machine F Front loader T Tractor body T8 Rear axle case

Claims (4)

トラクタ車体(T)から左右に突出した後車軸ケース(T8)に後立枠(13)の左右脚部(13A)を支持する左右一対の後支持体(5)を設け、トラクタ車体(T)の中途部にフロントローダ(F)を着脱自在に装着する左右一対のローダ装着体(10)を設け、前記後支持体(5)とローダ装着体(10)とに左右各側枠部材(6)の前後部を着脱自在に連結し、後部作業機(B)を連結する左右一対の連結体(7)を後車軸ケース(T8)に嵌合配置しかつ前記後支持体(5)と側枠部材(6)とに着脱自在に連結していることを特徴とするトラクタの補強枠構造。A pair of left and right rear supports (5) for supporting the left and right legs (13A) of the rear stand frame (13) are provided on a rear axle case (T8) projecting left and right from the tractor body (T). A pair of left and right loader mounts (10) to which a front loader (F) is detachably mounted is provided in the middle of the vehicle, and left and right side frame members (6) are mounted on the rear support (5) and the loader mount (10). ) Is detachably connected to the front and rear portions, and a pair of left and right connecting bodies (7) for connecting the rear working machine (B) are fitted and arranged in a rear axle case (T8) and are provided on the side with the rear support body (5). A reinforced frame structure for a tractor, which is detachably connected to a frame member (6). 前記左右各後支持体(5)と側枠部材(6)の後部と連結体(7)とを共締めしていることを特徴とする請求項1に記載のトラクタの補強枠構造。The reinforced frame structure for a tractor according to claim 1, wherein the right and left rear supports (5), the rear part of the side frame member (6), and the connecting body (7) are fastened together. 前記後車軸ケース(T8)と後支持体(5)との間、ローダ装着体(10)と側枠部材(6)との間、後支持体(5)と連結体(7)との間、の内の少なくともひとつに相互連結を補強する連結補強具(8)を設けていることを特徴とする請求項1又は2に記載のトラクタの補強枠構造。Between the rear axle case (T8) and the rear support (5), between the loader mounting body (10) and the side frame member (6), and between the rear support (5) and the connecting body (7). The reinforced frame structure of a tractor according to claim 1 or 2, wherein a connection reinforcing member (8) for reinforcing the interconnection is provided on at least one of the two. 前記連結体(7)はトラクタ車体(T)と後支持体(5)との間に位置しかつ上方開放の嵌合部(7a)を後車軸ケース(T8)に下方から嵌合しており、後車軸ケース(T8)に嵌合した前記嵌合部(7a)の前後部を後車軸ケース(T8)の上側で連結する嵌合部補強材(9)を設けていることを特徴とする請求項1〜3のいずれかに記載のトラクタの補強枠構造。The connecting body (7) is located between the tractor body (T) and the rear support (5), and has a fitting part (7a) which is open upward and is fitted to the rear axle case (T8) from below. And a fitting portion reinforcing member (9) for connecting the front and rear portions of the fitting portion (7a) fitted to the rear axle case (T8) above the rear axle case (T8). The reinforced frame structure for a tractor according to claim 1.
JP2002278095A 2002-09-24 2002-09-24 Reinforcement frame structure for tractor Pending JP2004114761A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002278095A JP2004114761A (en) 2002-09-24 2002-09-24 Reinforcement frame structure for tractor
US10/652,582 US7001134B2 (en) 2002-09-24 2003-08-29 Reinforcing frame construction for tractor having ROPS
KR1020030063527A KR100540503B1 (en) 2002-09-24 2003-09-15 Reinforcing frame construction for tractor having rollover protect system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002278095A JP2004114761A (en) 2002-09-24 2002-09-24 Reinforcement frame structure for tractor

Publications (1)

Publication Number Publication Date
JP2004114761A true JP2004114761A (en) 2004-04-15

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Family Applications (1)

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JP2002278095A Pending JP2004114761A (en) 2002-09-24 2002-09-24 Reinforcement frame structure for tractor

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
JP2006271294A (en) * 2005-03-30 2006-10-12 Kubota Corp Frame structure for combined works

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006271294A (en) * 2005-03-30 2006-10-12 Kubota Corp Frame structure for combined works
JP4502861B2 (en) * 2005-03-30 2010-07-14 株式会社クボタ Frame structure for complex work

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