JPS6112261Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は、走行車体に左右一対の後車輪を流体
圧シリンダを介して駆動昇降自在に設け、前記後
車輪への伝動機構を覆う車体フレーム兼用のミツ
シヨンケースの上方に運転座席を設けると共に前
記運転座席の後方に液体タンクを設けたトラクタ
のタンク取付構造に関し、合理的な構成により、
タンク容量を十分大きくしながらも、外方に出つ
張ること無く、かつ、安定支持させた状態で、タ
ンクを設けられるようにすることを目的とする。[Detailed description of the invention] This invention provides a pair of left and right rear wheels on a traveling vehicle body that can be driven up and down via fluid pressure cylinders, and a transmission case that also serves as the vehicle body frame that covers the transmission mechanism to the rear wheels is mounted above the transmission case. Regarding a tank mounting structure for a tractor in which a driver's seat is provided at the rear of the driver's seat and a liquid tank is provided behind the driver's seat, the tank mounting structure of the tractor is provided with a rational configuration.
To provide a tank that can be installed without protruding outward and in a stable supported state while sufficiently increasing the tank capacity.

次に、本考案実施の態様を例示図に基いて詳述
する。 Next, embodiments of the present invention will be described in detail based on illustrative drawings.

前後に車輪１，２を軸架した走行車体の前部に
エンジンＥを搭載すると共に、後方側に運転座席
３を配設し、かつ、後部に動力取出部４を設け、
もつて、主としてロータリ耕耘装置等の各種農作
業装置を牽引するためのトラクタを構成してあ
る。 An engine E is mounted on the front part of a running vehicle body with wheels 1 and 2 mounted on the front and rear, a driver's seat 3 is arranged on the rear side, and a power take-off part 4 is provided on the rear part,
In other words, the tractor is mainly used to tow various agricultural equipment such as a rotary tiller.

前記後車輪２，２夫々への伝動軸５，５を、車
体フレームの一部に兼用構成するミツシヨンケー
ス６に軸架し、前記エンジンＥからの動力を、主
クラツチ７、変速機構（図省略）及び差動機構８
から成る伝動機構を介して伝動軸５，５に伝達す
るように構成してある。 Transmission shafts 5, 5 to the rear wheels 2, 2, respectively, are mounted on a transmission case 6, which also serves as a part of the vehicle body frame, and the power from the engine E is transmitted to a main clutch 7, a transmission mechanism (Fig. (omitted) and differential mechanism 8
The signal is transmitted to the transmission shafts 5, 5 through a transmission mechanism consisting of the following.

前記運転座席３を設けるに、座席３を前端側横
軸芯Ｐ周りで、非使用時に雨水等によつて濡らす
ことの無いように上下反転揺動操作自在に、か
つ、ゴム体９・・を介して弾性支持可能に取付け
た受け部材１０を、転動自在なコイルスプリング
とボール、及び、固定機構１３を介して、車体前
後方向に摺動及び固定操作自在に支持部材１４に
設け、その支持部材１４を、前傾状の平行四連リ
ンク機構１５及び緩衝具１６を介して、高さ及び
車体前後位置を調節及び固定操作自在な状態でミ
ツシヨンケース６に弾性支持させてある。 In order to provide the driver's seat 3, the seat 3 can be turned upside down and swung freely around the horizontal axis P on the front end side so as not to get wet with rainwater etc. when not in use, and a rubber body 9... A receiving member 10 is attached to a supporting member 14 so as to be able to be elastically supported through a freely rolling coil spring and a ball, and a fixing mechanism 13. The member 14 is elastically supported by the transmission case 6 via a forward-inclined parallel quadruple link mechanism 15 and a shock absorber 16 so that its height and longitudinal position of the vehicle body can be adjusted and fixed.

前記後車輪２，２夫々を軸架した伝動ケース１
７，１７夫々を伝動軸５，５の軸芯Ｑ周りで上下
揺動自在に設けると共に、前記ミツシヨンケース
６の後部から上方に突設したブラケツト１８の左
右両端夫々と前記伝動ケース１７，１７夫々とに
わたつて油圧シリンダ１９，１９を設け、又、左
右前車輪１，１に対する伝動ケース２０，２０
夫々を油圧シリンダ２１，２１を介して取付けて
あり、前後車輪１，１，２，２夫々を各別に駆動
昇降し、車体左右方向に傾斜した作業地での走行
を車体を水平姿勢にして良好に行えるように、か
つ、畝を左右車輪間に位置させての走行を、車体
を対地的に高く位置させて良好に行える等作業性
を向上するように構成してある。 A transmission case 1 on which the rear wheels 2 and 2 are mounted
7 and 17 are provided to be vertically swingable around the axes Q of the transmission shafts 5 and 5, respectively, and both left and right ends of a bracket 18 protruding upward from the rear of the transmission case 6 and the transmission cases 17 and 17 are respectively provided. Hydraulic cylinders 19, 19 are provided respectively, and transmission cases 20, 20 are provided for the left and right front wheels 1, 1.
Each is attached via a hydraulic cylinder 21, 21, and the front and rear wheels 1, 1, 2, 2 are driven up and down separately, and the vehicle body can be moved in a horizontal position, making it easier to drive on a work site that is inclined in the left-right direction. The vehicle is configured to improve workability, such as being able to move with the ridges located between the left and right wheels and with the vehicle body being positioned high relative to the ground.

前記運転座席３とブラケツト１８との間に、前
面を運転座席３の背もたれ３ａに沿う状態に傾斜
させると共に、後面の上方側を左右方向ほぼ全幅
にわたつて後方に膨出させた燃料タンク２２を、
前記膨出タンク部分２２ａの底部を、その底面に
連設のナツト２３へのボルト２４の螺着によりブ
ラケツト１８に取付けて載置支持させ、かつ、膨
出タンク部分２２ａよりも前方の下側部分を運転
座席３とブラケツト１８間の凹入空間Ｓ内に入れ
込ませると共に、タンク２２の前端側下部をミツ
シヨンケース６上面にボルト２５により締付固定
するように構成してある。 A fuel tank 22 is provided between the driver's seat 3 and the bracket 18, the front surface of which is inclined along the backrest 3a of the driver's seat 3, and the upper side of the rear surface of which bulges rearward over almost the entire width in the left and right direction. ,
The bottom of the expansion tank portion 22a is mounted and supported on the bracket 18 by screwing a bolt 24 into a nut 23 connected to the bottom surface thereof, and a lower portion in front of the expansion tank portion 22a is attached. is inserted into the recessed space S between the driver's seat 3 and the bracket 18, and the lower part of the front end of the tank 22 is secured to the upper surface of the transmission case 6 by bolts 25.

前記タンク２２の上面を、車体左右方向におい
てその中央の給油口２６側が高くなる形状に構成
し、タンク２２の水平断面積を給油口２６側程小
になるように構成して、車体振動に伴う波立ちを
抑制するように構成してある。 The upper surface of the tank 22 is configured such that the center fuel filler port 26 side is higher in the left-right direction of the vehicle body, and the horizontal cross-sectional area of the tank 22 is configured to become smaller toward the fuel filler port 26 side. It is constructed to suppress ripples.

タンク２２の前面側にオイルゲージ２７を取付
け、かつ、前記凹入空間Ｓに入り込ませたタンク
２２の底部に供給管２８を取付けてある。 An oil gauge 27 is attached to the front side of the tank 22, and a supply pipe 28 is attached to the bottom of the tank 22 that enters the recessed space S.

前記タンク２２を製作するに、第４図に示すよ
うに、同一金型でプレス成形した一次プレス品
Ａ，Ａ夫々を各別に二次プレスし、（一次プレス
品Ａ，Ａを示すに、右側のものは左側のものを上
下反転した状態で示してある。）、補強リブ２９，
２９、オイルゲージ２７取付け用の凹入部３０及
び給油口２６の取付部３１を備えた二次プレス品
Aaと、膨出タンク部分２２ａ、補強リブ３２，
３２及び供給管２８に対する取付部３３を備えた
二次プレス品Abを得、それら両二次プレス品
Aa，Ab夫々に、前記給油口２６、オイルゲージ
２７、前記ナツト２３を溶接したステー３３、供
給管２８等を連設し、しかる後、両二次プレス品
Aa，Abを、フランジ３４，３４どうしの突合せ
溶接により一体化し、そのプレス工程を簡略化
し、タンク２２を安価に製作できるように構成し
てある。 To manufacture the tank 22, as shown in FIG. (The one on the left is shown upside down.), reinforcing rib 29,
29. Secondary press product equipped with a recessed part 30 for mounting the oil gauge 27 and a mounting part 31 for the oil filler port 26
Aa, the bulging tank portion 22a, the reinforcing rib 32,
32 and a mounting portion 33 for the supply pipe 28 are obtained, and both of these secondary press products are
The oil filler port 26, the oil gauge 27, the stay 33 to which the nut 23 is welded, the supply pipe 28, etc. are connected to each of Aa and Ab, and then both secondary pressed products
Aa and Ab are integrated by butt welding of the flanges 34, 34, and the pressing process is simplified so that the tank 22 can be manufactured at low cost.

尚、本考案は、上述のような燃料タンク２２に
限らず、例えば作動油タンクにも適用でき、それ
らをして液体タンク２２と総称する。 Note that the present invention is not limited to the fuel tank 22 as described above, but can also be applied to, for example, a hydraulic oil tank, and these are collectively referred to as the liquid tank 22.

以上要するに、本考案は、冒記したトラクタの
タンク取付構造において、前記シリンダ１９を取
付けるために前記ミツシヨンケース６の後部から
上方に突設したブラケツト１８と前記運転座席３
との間に形成される凹入空間Ｓに、その一部を入
れ込ませる状態で前記タンク２２を設け、かつ、
前記タンク２２の後面上方側を後方に膨出し、そ
の膨出タンク部分２２ａの底部を、前記ブラケツ
ト１８に載置支持させてある事を特徴とする。 In summary, the present invention provides the above-mentioned tractor tank mounting structure with a bracket 18 projecting upward from the rear of the transmission case 6 for mounting the cylinder 19, and the driver's seat 3.
The tank 22 is provided with a part of the tank 22 inserted into the recessed space S formed between the tank 22 and the tank 22, and
The upper rear surface of the tank 22 is bulged out rearward, and the bottom of the bulged tank portion 22a is mounted and supported by the bracket 18.

つまり、ブラケツト１８と運転座席３間の、本
来デツドスペースとなつていた凹入空間Ｓにまで
タンク２２の一部を入れ込ませるのみならず、タ
ンク２２の後面上方側を後方に膨出させる合理的
な構成を採用することにより、タンク２２を、そ
の容量を十分大きくしながらも外方に出つ張らせ
ることの無い状態で設けることができるに至り、
しかも、前記ブラケツト１８を利用し、そのブラ
ケツト１８に、前記膨出タンク部分２２ａの底部
を載置させ、タンク２２を安定した状態で設けら
れるようになつた。 In other words, it is rational not only to insert a part of the tank 22 into the recessed space S between the bracket 18 and the driver's seat 3, which was originally a dead space, but also to bulge out the upper rear surface of the tank 22 rearward. By adopting this configuration, the tank 22 can be installed without protruding outward while having a sufficiently large capacity.
Moreover, by using the bracket 18 and placing the bottom of the expansion tank portion 22a on the bracket 18, the tank 22 can be stably installed.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案に係るトラクタのタンク取付構造
の実施の態様を例示し、第１図はトラクタの全体
側面図、第２図は要部の一部切欠拡大側面図、第
３図は要部の背面図、第４図はタンクの製作工程
図である。 ２……後車輪、３……運転座席、６……ミツシ
ヨンケース、１８……ブラケツト、１９……シリ
ンダ、２２……タンク、２２ａ……膨出タンク部
分。 The drawings illustrate an embodiment of the tank mounting structure for a tractor according to the present invention, and FIG. 1 is an overall side view of the tractor, FIG. 2 is an enlarged partially cutaway side view of the main parts, and FIG. The rear view and FIG. 4 are manufacturing process diagrams of the tank. 2...Rear wheel, 3...Driver's seat, 6...Mission case, 18...Bracket, 19...Cylinder, 22...Tank, 22a...Bulging tank part.

Claims (1)

【実用新案登録請求の範囲】 走行車体に左右一対の後車輪２，２を流体圧
シリンダ１９を介して駆動昇降自在に設け、前
記後車輪２，２への伝動機構を覆う車体フレー
ム兼用のミツシヨンケース６の上方に運転座席
３を設けると共に、前記運転座席３の後方に液
体タンク２２を設けたトラクタのタンク取付構
造であつて、前記シリンダ１９を取付けるため
に前記ミツシヨンケース６の後部から上方に突
設したブラケツト１８と前記運転座席３との間
に形成される凹入空間Ｓに、その一部を入れ込
ませる状態で前記タンク２２を設け、かつ、前
記タンク２２の後面上方側を後方に膨出し、そ
の膨出タンク部分２２ａの底部を、前記ブラケ
ツト１８に載置支持させてある事を特徴とする
トラクタのタンク取付構造。 前記タンク２２が、同一金型でプレス成形し
た２個の一次プレス品Ａ，Ａ夫々を各別に二次
プレス処理して得られた二次プレス品Aa，Ab
どうしを合わせ溶接したものである事を特徴と
する実用新案登録請求の範囲第項に記載の構
造。[Scope of Claim for Utility Model Registration] A pair of left and right rear wheels 2, 2 are provided on the running vehicle body via a fluid pressure cylinder 19 so that they can be driven up and down, and the vehicle body frame also serves as a cover for the transmission mechanism to the rear wheels 2, 2. This is a tractor tank mounting structure in which a driver's seat 3 is provided above the transmission case 6 and a liquid tank 22 is provided behind the driver's seat 3, and the cylinder 19 is installed from the rear of the transmission case 6. The tank 22 is provided so that a portion of the tank 22 is inserted into the recessed space S formed between the bracket 18 protruding upward and the driver's seat 3, and the rear upper side of the tank 22 is A tank mounting structure for a tractor, which bulges out rearward, and the bottom of the bulging tank portion 22a is mounted and supported by the bracket 18. The tank 22 is a secondary press product Aa, Ab obtained by separately performing a secondary press process on two primary press products A, A press-formed using the same mold.
The structure according to claim 1 of the utility model registration claim, characterized in that the two parts are welded together.