JP2006027531A - Working vehicle - Google Patents

Working vehicle Download PDF

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Publication number
JP2006027531A
JP2006027531A JP2004212036A JP2004212036A JP2006027531A JP 2006027531 A JP2006027531 A JP 2006027531A JP 2004212036 A JP2004212036 A JP 2004212036A JP 2004212036 A JP2004212036 A JP 2004212036A JP 2006027531 A JP2006027531 A JP 2006027531A
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Japan
Prior art keywords
fuel
tanks
tank
hydraulic oil
fueling
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JP2004212036A
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Japanese (ja)
Inventor
Motonori Sanuki
元則 佐貫
Shinji Ishiwada
慎二 石和田
Yasuhito Tsuji
八州仁 辻
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Mitsubishi Agricultural Machinery Co Ltd
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Mitsubishi Agricultural Machinery Co Ltd
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Priority to JP2004212036A priority Critical patent/JP2006027531A/en
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  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate fueling work to fuel tanks arranged and provided on both left and right sides of a vehicle body on a crawler tractor which is a large working vehicle. <P>SOLUTION: Height of fueling ports 33 provided on upper parts of fuel tanks 31L, 32R is made about half of a conventional fuel tank height by respectively dividing the working oil tanks 32L, 32R and the fuel tanks 31L, 31R and placing the working oil tanks 32L, 32R on the fuel tanks 31L, 31R high in fueling frequency. Thereby it is possible to carry out the fueling work without lifting up a heavy portable tank containing fuel from steps 25L, 25R in fueling the fuel to the fuel tanks 31L, 31R. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、クローラトラクタ等の作業車両の、特に燃料タンクの配置構造に関する。   The present invention relates to an arrangement structure of a working vehicle such as a crawler tractor, particularly a fuel tank.

従来、大型の農業用トラクタであるクローラトラクタにおいては、キャビンの左右両側下部に、それぞれ燃料タンクと作動油タンクとを配設することによって、当該トラクタの左右バランスを良好に保って走行安定性を向上させるように構成したものが知られている(例えば、特許文献1参照。)。
特開平8−72566号公報(第2頁、図1−図3)
Conventionally, in a crawler tractor, which is a large agricultural tractor, a fuel tank and a hydraulic oil tank are disposed at the lower left and right sides of the cabin, respectively, so that the right and left balance of the tractor is maintained and traveling stability is improved. What was comprised so that it might improve is known (for example, refer to patent documents 1).
JP-A-8-72566 (second page, FIGS. 1 to 3)

しかし、上述した特許文献1のものは、燃料タンクの給油口が必然的に高い位置に設けられることになるので、当該燃料タンクへ燃料を給油する際は、燃料の入った重たい携行タンクをステップから持ち上げて給油作業を行わなければならず極めて作業性が悪かった。   However, in the above-mentioned Patent Document 1, the fuel tank is provided with a fuel supply port inevitably at a high position. Therefore, when fuel is supplied to the fuel tank, a heavy carrying tank containing fuel is stepped. The work must be carried out by refueling from the outside.

本発明は、上記課題を解決することを目的としたものであって、機体の左右両側に作動油タンクと燃料タンクを設けた作業車両において、前記作動油タンクと燃料タンクを左右にそれぞれ分割すると共に、当該燃料タンク上に作動油タンクを載置したことを特徴としている。   The present invention has been made to solve the above-mentioned problems, and in a work vehicle provided with a hydraulic oil tank and a fuel tank on both the left and right sides of the airframe, the hydraulic oil tank and the fuel tank are divided into left and right, respectively. In addition, a hydraulic oil tank is placed on the fuel tank.

本発明によれば、機体の左右両側に設ける作動油タンクと燃料タンクを左右にそれぞれ分割すると共に、給油頻度の高い燃料タンク上に作動油タンクを載置したことによって、燃料タンクの上部に設ける給油口の高さが従来の燃料タンクの約半分の高さとなり、当該燃料タンクへ燃料を給油する際、燃料の入った重たい携行タンクをステップから持ち上げることなく、例えば、このステップ上に置いたままで給油作業を行うことができるので作業性が大幅に向上する。   According to the present invention, the hydraulic oil tank and the fuel tank provided on the left and right sides of the fuselage are divided into left and right, respectively, and the hydraulic oil tank is placed on the fuel tank having a high refueling frequency, so that it is provided on the upper part of the fuel tank. The height of the filler port is about half that of a conventional fuel tank, and when fuel is supplied to the fuel tank, the heavy carrying tank containing the fuel is not lifted from the step, for example, placed on this step. Therefore, the workability is greatly improved.

次に、本発明の実施の形態について、図面に基づいて説明する。図1は、本発明における作業車両である農業用クローラトラクタ10の側面図、図2は同じく背面図であって、このクローラトラクタ10は、機体フレーム11上に通常のトラクタと同様に、エンジン12を内装するボンネット13、キャビン14等を備えており、該キャビン14内には、運転席を始め、各種の操作レバーや各種のスイッチ類等を備えた運転操縦部15を設けている。   Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of an agricultural crawler tractor 10 that is a work vehicle according to the present invention, and FIG. 2 is also a rear view. The crawler tractor 10 has an engine 12 on a body frame 11 in the same manner as a normal tractor. The cabin 14 is provided with a hood 13, a cabin 14, and the like. In the cabin 14, a driver's seat, a driver's control unit 15 including various operation levers, various switches, and the like are provided.

そして、キャビン14の後方下部には、各種の農作業を行う作業機を装着するための作業機昇降装置16を設けている。また、17L,17Rは、左右一対のクローラ式走行装置であり、該クローラ式走行装置17L,17R上に機体フレーム11を支持している。   A work machine lifting device 16 for mounting work machines for performing various types of farm work is provided at the lower rear of the cabin 14. Reference numerals 17L and 17R denote a pair of left and right crawler type traveling devices, and the body frame 11 is supported on the crawler type traveling devices 17L and 17R.

尚、前記クローラ式走行装置17L,17Rは、機体フレーム11の下部に一体形成してなる走行フレーム18の前端部と後端部に軸支した駆動スプロケット21とアイドラ22、及び両者21,22の間に設けた複数の転輪23,23・・に巻回するクローラベルト24等によって構成されている。   The crawler type traveling devices 17L and 17R include a driving sprocket 21 and an idler 22 that are pivotally supported at the front end portion and the rear end portion of the traveling frame 18 formed integrally with the lower portion of the machine body frame 11, and It is comprised by the crawler belt 24 etc. which wind around the some wheel 23,23 ... provided in the middle.

また、キャビン14の左右両側下部のクローラ式走行装置17L,17Rの上方には、
クローラトラクタ10にオペレーターが乗り込む際のステップ25L,25Rを設けている。そして、機体フレーム11の左右両側にそれぞれ分割した燃料タンク31L,31Rを配設すると共に、両燃料タンク31L,31R上に同じく左右に分割した作動油タンク32L,32Rを載置している。更に詳しくは、右側あるいは左側の燃料タンク31L,31Rと作動油タンク32L,32Rは、板金製の箱状に一体形成されると共に、内部が2室に分かれるように中間部を隔壁で仕切って二層構造としている。
In addition, above the crawler type traveling devices 17L and 17R at the lower left and right sides of the cabin 14,
Steps 25L and 25R when the operator gets into the crawler tractor 10 are provided. The fuel tanks 31L and 31R divided on the left and right sides of the body frame 11 are disposed, and the hydraulic oil tanks 32L and 32R divided in the left and right directions are placed on the fuel tanks 31L and 31R. More specifically, the right or left side fuel tanks 31L, 31R and the hydraulic oil tanks 32L, 32R are integrally formed in a sheet metal box shape, and an intermediate portion is partitioned by a partition so that the interior is divided into two chambers. It has a layer structure.

尚、左右の燃料タンク31L,31R及び作動油タンク32L,32Rの下部を図示しないパイプを介して連通させると共に、機体が傾斜した時、燃料と作動油とが一側の燃料タンクまたは作動油タンクに偏らないようにするために、当該パイプにチェックバルブを介挿することによって、左右の燃料タンク31L,31R及び作動油タンク32L,32R内に燃料と作動油がそれぞれ均等に入るようにしてある。   The left and right fuel tanks 31L, 31R and lower portions of the hydraulic oil tanks 32L, 32R are communicated with each other via a pipe (not shown), and when the machine body is inclined, the fuel and the hydraulic oil are one side of the fuel tank or the hydraulic oil tank. In order to prevent the fuel and hydraulic oil from entering the left and right fuel tanks 31L and 31R and the hydraulic oil tanks 32L and 32R, respectively, by inserting a check valve in the pipe. .

そして、上述の如く左右の燃料タンク31L,31Rに連通するパイプの一端からエンジン12に燃料が供給される一方、作動油タンク32L,32Rに連通するパイプの一端から左右の走行用チャージポンプ、及び作業機用の油圧アクチュエータ等の油圧ポンプに作動油が供給されるようになっている。   As described above, fuel is supplied to the engine 12 from one end of the pipe communicating with the left and right fuel tanks 31L and 31R, while the left and right traveling charge pumps are connected from one end of the pipe communicating with the hydraulic oil tanks 32L and 32R, and Hydraulic oil is supplied to a hydraulic pump such as a hydraulic actuator for a work machine.

また、作動油タンク32L,32Rには、クローラ式走行装置17L,17Rを駆動させる左右の走行用無段変速装置(HST)の余剰油、及び作業機昇降装置16を作動させる油圧アクチュエータ等のコントロールバルブからの戻り油が還流するため、その油温が高くなることから、当該作動油タンク32L,32Rと燃料タンク31L,31Rの間に適切な断熱材を介装させた二層式のタンクに形成してもよい。   Further, the hydraulic oil tanks 32L, 32R include control of excess oil of the left and right traveling continuously variable transmission (HST) that drives the crawler type traveling devices 17L, 17R, and a hydraulic actuator that operates the work implement lifting device 16. Since the return oil from the valve recirculates, the oil temperature rises. Therefore, a two-layer tank in which an appropriate heat insulating material is interposed between the hydraulic oil tanks 32L and 32R and the fuel tanks 31L and 31R. It may be formed.

上述した構成によれば、機体後部の左右両側に、給油頻度の高い燃料タンク31L,31Rを左右にそれぞれ分割して載置したことによって、燃料タンク31L,31Rの上部に設ける給油口33の高さが従来の燃料タンク31(図3参照)の約半分の高さとなり、当該燃料タンク31L,31Rへ燃料を給油する際、燃料の入った重たいポリタンク等の携行タンクをステップ25L,25R上から持ち上げなくても、該ステップ25L,25R上に置いたままで給油作業を行うことができるので作業性が大幅に向上する。   According to the above-described configuration, the fuel tanks 31L and 31R having a high refueling frequency are separately placed on the left and right sides of the rear part of the machine body, so that the height of the fuel filling port 33 provided above the fuel tanks 31L and 31R is increased. Is about half the height of the conventional fuel tank 31 (see FIG. 3), and when fuel is supplied to the fuel tanks 31L, 31R, a heavy tank such as a heavy poly tank containing the fuel is taken from above the steps 25L, 25R. Even if it is not lifted, it is possible to perform the refueling operation while remaining on the steps 25L and 25R, so that workability is greatly improved.

また、図3に示す従来のクローラトラクタ10の燃料タンク31は、オペレーターのモデルMと対比して明らかなように大容量であることから、当該燃料タンク31を図4に示す如く着脱可能な複数のカートリッジ式の燃料タンク31a,31a・・に小分けして構成し、それによって給油作業の作業性の向上を図ってもよい。尚、各燃料タンク31a,31a・・の上部に給油口41、取っ手42を設ける一方、燃料タンク31a,31a・・の下部には、エンジン12に燃料を供給する燃料パイプ43に連通させる図示しないストップ弁式の連結手段を備えている。   Further, since the fuel tank 31 of the conventional crawler tractor 10 shown in FIG. 3 has a large capacity as apparent from the model M of the operator, a plurality of fuel tanks 31 can be attached and detached as shown in FIG. The cartridge type fuel tanks 31a, 31a,... May be subdivided to improve the workability of the refueling operation. The fuel tanks 41a, 31a,... Are provided with a fuel filler port 41 and a handle 42, while the fuel tanks 31a, 31a,. Stop valve type connecting means is provided.

しかし、上述の如く小分けしたカートリッジ式の燃料タンク31a,31a・・であっても、燃料が満タン状態であれば持ち上げることは容易ではないので、図5及び図6に示すように、当該燃料タンク31a,31a・・を複数のローラー46・・上を滑らせながら着脱できるように構成することにより、更に給油作業の作業性の向上を図ってもよい。   However, even if the cartridge-type fuel tanks 31a, 31a,... Divided as described above are not easily lifted if the fuel is full, as shown in FIGS. It may be possible to further improve the workability of the refueling work by configuring the tanks 31a, 31a,... So as to be detachable while sliding on the plurality of rollers 46.

上述したものでは、燃料タンク31a,31a・・の下部にクイックジョイント式のカプラ47を設けて、このカプラ47とエンジン12に燃料を供給する燃料パイプ43とを容易に連結できるように構成すると共に、燃料タンク31a,31a・・の下面を受ける複数のローラー46・・を左右のフェンダー25L,25R上に設け、更に回動支点Pを中心として機体の外方側に開放可能な燃料タンクカバー51を設けることによって、当該燃料タンク31a,31a・・を僅かな力で複数のローラー46・・上を滑らせて移動できるように構成している。   In the above, a quick joint type coupler 47 is provided below the fuel tanks 31a, 31a,... So that the coupler 47 and the fuel pipe 43 for supplying fuel to the engine 12 can be easily connected. A plurality of rollers 46... For receiving the lower surfaces of the fuel tanks 31 a, 31 a,... Are provided on the left and right fenders 25 L, 25 R, and further, a fuel tank cover 51 that can be opened to the outer side of the fuselage around the rotation fulcrum P. Is provided so that the fuel tanks 31a, 31a,... Can be slid and moved on the plurality of rollers 46, with a slight force.

また、前記作業機昇降装置16にロータリ耕耘機等を装着して耕耘作業を行う場合の直進性を向上すべく、図7及び図8に示すように、機体中央部の走行フレーム18から圃場面に向けて出没可能な抵抗体55を設けてもよい。   Further, as shown in FIGS. 7 and 8, in order to improve the straight running performance when a rotary tiller or the like is attached to the work machine lifting / lowering device 16, the farm scene is moved from the traveling frame 18 at the center of the machine body. You may provide the resistor 55 which can be protruded toward.

詳述すると、図9〜図11に示すように、走行フレーム18の中央部に断面コ字状のレール56,56の凹部を対向して横設し、且つ両レール56,56の凹部に嵌装すると共に油圧シリンダ57を介して左右移動可能な支持体58を設け、更に該支持体58の下部に油圧シリンダ59を介して上下に揺動可能な抵抗体55を設ければよい。   More specifically, as shown in FIGS. 9 to 11, the recesses of the rails 56, 56 having a U-shaped cross section face each other at the center of the traveling frame 18 and are fitted in the recesses of the rails 56, 56. It is only necessary to provide a support 58 that can be moved left and right via a hydraulic cylinder 57 and a resistor 55 that can swing up and down via a hydraulic cylinder 59 below the support 58.

即ち、上述の如く構成した抵抗体55を圃場面に突き刺した状態で耕耘作業を行えば機体の直進性が向上する。そして、左右のクローラ式走行装置17L,17Rの負荷バランスが安定しない場合は、当該抵抗体55の左右位置を微調節して直進安定性を保つことができる。尚、抵抗体55を機体の前後方向中心部に設けることによって、牽引反力を低減させることができると共に耕盤の一部分を破砕する効果も期待することができる。   That is, if the plowing operation is performed with the resistor 55 configured as described above being pierced into a farm scene, the straightness of the machine body is improved. If the load balance between the left and right crawler type traveling devices 17L and 17R is not stable, the left and right position of the resistor 55 can be finely adjusted to maintain straight running stability. In addition, by providing the resistor 55 in the center part in the front-rear direction of the machine body, it is possible to reduce the traction reaction force and to expect the effect of crushing a part of the cultivator.

クローラトラクタの側面図。The side view of a crawler tractor. クローラトラクタの背面図。The back view of a crawler tractor. 従来の燃料タンクを備えるクローラトラクタの側面図。The side view of a crawler tractor provided with the conventional fuel tank. カートリッジ式燃料タンクの構成を示す側断面。The side cross section which shows the structure of a cartridge type fuel tank. カートリッジ式燃料タンクの他の実施形態を示す側断面。A side section showing other embodiments of a cartridge type fuel tank. 図5におけるAA断面図。AA sectional drawing in FIG. 抵抗体を備えるクローラトラクタの側面図。The side view of a crawler tractor provided with a resistor. 抵抗体を備えるクローラトラクタの正面図。The front view of a crawler tractor provided with a resistor. 機体(走行)フレームの平面図。The top view of a body (running) frame. 抵抗体を下方に揺動させた状態を示す図5におけるBB断面図。BB sectional drawing in FIG. 5 which shows the state which rock | fluctuated the resistor downward. 抵抗体を格納した状態を示す図5におけるBB断面図。BB sectional drawing in FIG. 5 which shows the state which stored the resistor.

符号の説明Explanation of symbols

10 作業車両
31L 燃料タンク(左)
31R 燃料タンク(右)
32L 作動油タンク(左)
32R 作動油タンク(右)
10 Working vehicle 31L Fuel tank (Left)
31R Fuel tank (right)
32L hydraulic oil tank (left)
32R hydraulic oil tank (right)

Claims (1)

機体の左右両側に作動油タンク(32L,32R)と燃料タンク(31L,31R)を設けた作業車両(10)において、前記作動油タンク(32L,32R)と燃料タンク(31L,31R)を左右にそれぞれ分割すると共に、当該燃料タンク(31L,31R)上に作動油タンク(32L,32R)を載置したことを特徴とする作業車両。   In a work vehicle (10) provided with hydraulic oil tanks (32L, 32R) and fuel tanks (31L, 31R) on both left and right sides of the machine body, the hydraulic oil tanks (32L, 32R) and fuel tanks (31L, 31R) are And a working oil tank (32L, 32R) placed on the fuel tank (31L, 31R).
JP2004212036A 2004-07-20 2004-07-20 Working vehicle Pending JP2006027531A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014080714A1 (en) * 2012-11-22 2014-05-30 日立建機株式会社 Dump truck
JP2018168678A (en) * 2017-03-30 2018-11-01 ヤンマー株式会社 Crawler tractor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014080714A1 (en) * 2012-11-22 2014-05-30 日立建機株式会社 Dump truck
JP2018168678A (en) * 2017-03-30 2018-11-01 ヤンマー株式会社 Crawler tractor

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