JPH0858403A - Fuel tank of construction machine - Google Patents
Fuel tank of construction machineInfo
- Publication number
- JPH0858403A JPH0858403A JP22572994A JP22572994A JPH0858403A JP H0858403 A JPH0858403 A JP H0858403A JP 22572994 A JP22572994 A JP 22572994A JP 22572994 A JP22572994 A JP 22572994A JP H0858403 A JPH0858403 A JP H0858403A
- Authority
- JP
- Japan
- Prior art keywords
- fuel tank
- fuel
- tank
- battery
- oil
- 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
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として油圧ショベル
など建設機械、作業車両に装備している燃料タンクの構
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to the structure of a fuel tank mounted on construction machines such as hydraulic excavators and work vehicles.
【０００２】[0002]
【従来の技術】図７は、従来技術の燃料タンクを装備し
ている油圧ショベル本体の要部側面図である。図におい
て、１は下部走行体、２は下部走行体１のトラックシュ
−、３は上部旋回体、４は上部旋回体３を形成する旋回
フレ−ムの右サイドデッキ、５はキャブ、６はエンジン
室、７はカウンタウエイト、８は作動油タンク、９は燃
料タンク、１０は燃料タンク９の上面部に取付けた給油
口、１１はバッテリである。図８は、図３のＡより見た
油圧ショベル本体の要部正面図である。図７及び図８に
示すように、従来技術では下部走行体１に旋回可能に搭
載した上部旋回体３の左前部にキャブ５を、後部にエン
ジン室６及びカウンタウエイト７を配設している。また
右サイドデッキ４にはその前部より中央部にわたってバ
ッテリ１１、燃料タンク９及び作動油タンク８などを配
設している。また上記燃料タンク９の上面はカウンタウ
エイト７、作動油タンク８などの上面とほぼ面一に形成
され、上部旋回体３の上面部の一部を成している。また
上記燃料タンク９の上面部に燃料補給用の給油口１０を
立設している。2. Description of the Related Art FIG. 7 is a side view of a main part of a hydraulic excavator body equipped with a conventional fuel tank. In the figure, 1 is a lower traveling body, 2 is a track shoe of the lower traveling body 1, 3 is an upper swing body, 4 is a right side deck of a swing frame forming the upper swing body 3, 5 is a cab, and 6 is An engine compartment, 7 is a counterweight, 8 is a hydraulic oil tank, 9 is a fuel tank, 10 is an oil supply port attached to the upper surface of the fuel tank 9, and 11 is a battery. FIG. 8 is a front view of a main part of the hydraulic excavator main body viewed from A in FIG. 3. As shown in FIGS. 7 and 8, in the prior art, a cab 5 is arranged at the left front part of an upper revolving structure 3 which is rotatably mounted on a lower traveling structure 1, and an engine compartment 6 and a counterweight 7 are arranged at the rear part thereof. . Further, on the right side deck 4, a battery 11, a fuel tank 9, a hydraulic oil tank 8 and the like are arranged from the front part to the central part. The upper surface of the fuel tank 9 is formed to be substantially flush with the upper surfaces of the counterweight 7, the hydraulic oil tank 8 and the like, and forms a part of the upper surface of the upper revolving structure 3. A fuel filler port 10 for refueling is provided upright on the upper surface of the fuel tank 9.
【０００３】[0003]
【発明が解決しようとする課題】上記に示した従来技術
の燃料タンクには、次のような問題点があった。すなわ
ち従来技術の燃料タンクは、その上面をカウンタウエイ
トなど上部旋回体の上面とほぼ面一に形成されているた
めに背が高くなっている。しかも燃料を補給するための
給油口を上記燃料タンクの上面部に設けているので、地
上に立った作業者の目や手の届かないものが多く、地上
より給油ができない。したがって下部走行体のトラック
シュ−に上がって給油するか、上部旋回体の上面部に上
がって給油するしかなかった。そのために燃料補給がや
りづらく作業者にとって大きな負担となっていた。本発
明は、地上より容易に給油できる燃料タンクを提供する
ことを目的としている。The above-mentioned prior art fuel tank has the following problems. That is, the fuel tank of the prior art is tall because its upper surface is formed to be substantially flush with the upper surface of the upper revolving structure such as a counterweight. Moreover, since the refueling port for refueling is provided on the upper surface of the fuel tank, there are many things that are out of the reach of the worker standing on the ground and the fuel cannot be refueled from the ground. Therefore, there is no choice but to go up to the truck shoe of the lower traveling body to refuel or to go up to the upper surface of the upper revolving body to refuel. For this reason, refueling is difficult to perform, which places a heavy burden on the worker. An object of the present invention is to provide a fuel tank that can be easily refueled from the ground.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、本発明の燃料タンクは、上部旋回体を形成する旋回
フレ−ムのサイドデッキに、上記上部旋回体のほぼ半分
程度の高さに形成した低形の燃料タンクを載置し、その
給油口を上記燃料タンクの上面部に突設し、かつ上記給
油口を上記上部旋回体の側面部近くに配設して地上から
の燃料補給を可能にした。In order to achieve the above object, a fuel tank of the present invention has a side deck of a swivel frame forming an upper swivel body and has a height of about half of the upper swivel body. The formed low-profile fuel tank is placed, the fueling port is projected from the upper surface of the fuel tank, and the fueling port is arranged near the side surface of the upper revolving structure to refuel from the ground. Made possible.
【０００５】上記バッテリを上記燃料タンクの上部に移
設し、その空きスペ−スを利用して上記燃料タンクを拡
張し、所定の燃料収容量を確保した。The battery was moved to the upper portion of the fuel tank, and the empty space was used to expand the fuel tank to secure a predetermined amount of fuel.
【０００６】上記燃料タンクの給油口を、上部旋回体の
側面部に向って若干傾斜させた。The fuel filler port of the fuel tank is slightly inclined toward the side surface of the upper swing body.
【０００７】上記サイドデッキの前面側から上記燃料タ
ンク及びバッテリの上面側にわたって、かつその側面側
を覆うように形成したカバ−をヒンジを介して上下方向
に開閉できるように取付け、また上記カバ−の側面部の
上記給油口に対応する部分に給油用の穴を設け、上記カ
バ−を開閉することなく給油できるようにした。A cover formed so as to cover the side surface from the front side of the side deck to the upper side of the fuel tank and the battery is attached via a hinge so as to be opened and closed in the vertical direction, and the cover is also provided. A hole for oil supply is provided in a portion of the side surface portion corresponding to the oil supply port so that oil can be supplied without opening and closing the cover.
【０００８】[0008]
【作用】本発明の燃料タンクでは、その高さを、上部旋
回体を形成するカウンタウエイトや作動油タンクなどの
高さのほぼ半分程度の低形に形成し、その給油口を上記
燃料タンクの上面部で側端部付近に設けているので、作
業者が地上より容易に給油できる高さになっている。ま
たバッテリを上記燃料タンクの上部に移設し、そのバッ
テリの空きスペ−スを利用して上記燃料タンクの平面視
面積を拡張できるので、所定の燃料収容量を確保しなが
らその高さをできるだけ低く構成している。また上記燃
料タンクの上面部に設けている給油口を外方に向って若
干傾斜させているので、給油口内部の視認性が良くな
り、給油ノズルの出入れが容易になるなど、より一層給
油がしやすくなっている。また上記燃料タンク及びバッ
テリを覆うようにカバ−を設けて上記燃料タンク及びバ
ッテリを保護し、かつ外観の向上を図っている。さらに
上記カバ−の側面部の上記給油口にあたる場所に給油穴
を開穿しているので、上記カバ−を開閉することなく給
油ができる。上記のように燃料補給をするたびにトラッ
クシュ−に上がったり、上部旋回体に上がったりする必
要がなく、給油時間の短縮を図るとともに、作業者の負
担が軽減される。In the fuel tank of the present invention, the height is formed to be about half the height of the counterweight that forms the upper revolving structure, the hydraulic oil tank, and the like, and the oil supply port is formed in the fuel tank. Since it is provided on the upper surface near the side edges, it is high enough for the worker to refuel from the ground. Further, since the battery is relocated to the upper portion of the fuel tank and the plan view area of the fuel tank can be expanded by utilizing the empty space of the battery, the height of the fuel tank can be kept as low as possible while securing a predetermined fuel storage amount. I am configuring. Further, since the fueling port provided on the upper surface of the fuel tank is slightly inclined outward, the visibility inside the fueling port is improved and the refueling nozzle can be easily taken in and out. It is easy to remove. Further, a cover is provided to cover the fuel tank and the battery to protect the fuel tank and the battery and to improve the appearance. Further, since the oil supply hole is formed in the side surface portion of the cover at a position corresponding to the oil supply port, the oil can be supplied without opening and closing the cover. As described above, it is not necessary to go up to the truck shoe or the upper revolving structure every time the fuel is replenished, so that the refueling time is shortened and the burden on the operator is reduced.
【０００９】[0009]
【実施例】図１は、本発明請求項１の燃料タンク１４を
装備した油圧ショベル本体の要部側面図である。図にお
いて、従来技術と同一構成要素を使用するものに対して
は同符号を付す。１２は上部旋回体、１３は右サイドデ
ッキである。図２は、図１のＢより見た上部旋回体１２
の要部正面図である。図１及び図２に示すように、右サ
イドデッキ１３の前部より中央部にわたってバッテリ１
１及び燃料タンク１２を載置している。また上記燃料タ
ンク１４は上部旋回体１２を形成しているカウンタウエ
イト７及び作動油タンク８などのほぼ半分程度の高さの
低形に形成し、その上面部の側端部付近に給油口１０を
設けている。上記のように、燃料タンク１４の高さを低
くし給油口１０を燃料タンク１４上面部の外端部付近に
配設したので、トラックシュ−２や上部旋回体１２に上
がることなく地上より給油することができる。1 is a side view of a main part of a hydraulic excavator body equipped with a fuel tank 14 according to claim 1 of the present invention. In the figure, the same reference numerals are given to those using the same constituent elements as those in the prior art. 12 is an upper swing body, and 13 is a right side deck. FIG. 2 shows the upper swing body 12 as seen from FIG. 1B.
FIG. As shown in FIG. 1 and FIG. 2, the battery 1 extends from the front portion of the right side deck 13 to the central portion thereof.
1 and the fuel tank 12 are mounted. Further, the fuel tank 14 is formed in a low shape of about half the height of the counterweight 7 and the hydraulic oil tank 8 forming the upper swing body 12, and the fuel inlet 10 is provided near the side end of the upper surface thereof. Is provided. As described above, since the height of the fuel tank 14 is lowered and the fuel filler port 10 is disposed near the outer end portion of the upper surface of the fuel tank 14, the fuel is supplied from the ground without going up to the truck shoe-2 or the upper swing body 12. can do.
【００１０】図３は、本発明請求項２の燃料タンク１６
を装備した上部旋回体１５の要部側面図である。図にお
いて、１７は旋回フレ−ム、１８は旋回フレ−ム１７に
固設したバッテリ１１の取付け台、１９は旋回フレ−ム
１７のメインフレ−ム、２０は同じく旋回フレ−ム１７
の右サイドデッキである。図４は、図３のＣより見た上
部旋回体１５の要部正面図である。図において、２１は
右サイドデッキ２０のサイドフレ−ムである。図３及び
図４に示すように、旋回フレ−ム１７の右サイドデッキ
２１の上面部に燃料タンク１６を載置し、上記燃料タン
ク１６の後半部上方に、サイドフレ−ム２１の上面部よ
りメインフレ−ム１９の側面部にわたる取付け台１８を
設け、上記取付け台１８の上面部にバッテリ１１を取付
けている。また上記燃料タンク１６は右サイドデッキ２
１の前部より中央部にわたってその底面長さを大きく取
り、その高さを上部旋回体１５の高さの半分程度に形成
している。上記のように、燃料タンク１６を低形に形成
してその上方にバッテリ１１を移設し、その空きスペ−
スを利用して上記燃料タンク１６を拡張し、所定の燃料
収容量を確保している。FIG. 3 shows a fuel tank 16 according to claim 2 of the present invention.
It is a principal part side view of the upper revolving superstructure 15 equipped with. In the figure, 17 is a swivel frame, 18 is a mount for the battery 11 fixed to the swivel frame 17, 19 is a main frame of the swivel frame 17, and 20 is the swivel frame 17 as well.
It is the right side deck. FIG. 4 is a front view of a main part of the upper swing body 15 viewed from C of FIG. In the figure, 21 is a side frame of the right side deck 20. As shown in FIGS. 3 and 4, the fuel tank 16 is placed on the upper surface of the right side deck 21 of the turning frame 17, and the upper half of the side frame 21 is located above the rear half of the fuel tank 16. The mounting base 18 is provided over the side surface of the main frame 19, and the battery 11 is mounted on the upper surface of the mounting base 18. The fuel tank 16 is the right side deck 2
The length of the bottom surface is made larger from the front part to the center part of the No. 1 and the height is formed to be about half the height of the upper swing body 15. As described above, the fuel tank 16 is formed in a low shape, and the battery 11 is transferred above the fuel tank 16 to remove the empty space.
The fuel tank 16 is expanded by utilizing the gas to secure a predetermined fuel storage amount.
【００１１】図５は、本発明請求項３の燃料タンク１６
の要部正面図である。図において、２２は給油口、２３
は上部旋回体の右側面部である。図に示すように、給油
口２２を上部旋回体の右側面部２３に向って若干傾斜さ
せ、より一層給油しやすくしている。FIG. 5 shows a fuel tank 16 according to claim 3 of the present invention.
FIG. In the figure, 22 is a filler port, 23
Is the right side surface of the upper swing body. As shown in the figure, the oil supply port 22 is slightly inclined toward the right side surface portion 23 of the upper swing body to make it easier to refuel.
【００１２】図６は、本発明請求項４のカバ−２３を装
着した上部旋回体の要部側面図である。図において、２
４はヒンジ、２５はカバ−２３に開穿した給油穴であ
る。図に示すように、カバ−２３は右サイドデッキ２０
の前面側から燃料タンク１６及びバッテリ１１の上面側
にわたって、かつその側面側を覆うように形成され、ヒ
ンジ２４を介して上下方向に開閉できるようになってい
る。また上記カバ−２３の側面部に給油穴２５を設けて
いる。したがってカバ−２３を開閉することなく給油が
できる。FIG. 6 is a side view of an essential part of an upper revolving structure to which the cover 23 according to claim 4 of the present invention is attached. In the figure, 2
Reference numeral 4 is a hinge, and 25 is an oil supply hole opened in the cover 23. As shown in the figure, the cover 23 is on the right side deck 20.
It is formed so as to extend from the front surface side to the upper surface side of the fuel tank 16 and the battery 11 and to cover the side surface side thereof, and can be opened and closed in the vertical direction via a hinge 24. Further, an oil supply hole 25 is provided on the side surface of the cover 23. Therefore, it is possible to refuel without opening and closing the cover 23.
【００１３】[0013]
【発明の効果】本発明では、低形の燃料タンクを形成
し、その給油口を上部旋回体の側面部近くに設けたの
で、作業者が地上より容易に給油できるようになった。
またバッテリを上記燃料タンクの上部に移設し、そのバ
ッテリの空きスペ−スを利用して上記燃料タンクを拡張
したので、低形でありながらしかも所定の燃料収容量を
確保し性能の維持を図れた。また上記燃料タンクの上面
部に設けている給油口を外方に向って若干傾斜させてい
るので、給油口内部の視認性が良くなり、給油ノズルの
出入れが容易になるなど作業性が良くなった。このよう
に燃料補給をするたびにトラックシュ−や上部旋回体に
上がる必要がなく、給油時間の短縮を図るとともに作業
者の負担を軽減することができる。また燃料タンクの底
面積を大きくその高さを小さくしたことにより燃料タン
ク及び収容された燃料の重心が下がる。したがって、掘
削時あるいは旋回発進、停止時などの振動、衝撃によっ
て発生する曲げモ−メント、ねじりモ−メントが小さく
なり、燃料タンク本体あるいは取付け部に発生する応力
が小さくなる。これにより燃料タンクの亀裂などのトラ
ブルを防止し、さらに板厚を下げるなど燃料タンク本体
及び取付け部などの剛性ダウンが可能となりコストダウ
ンを図ることができる。According to the present invention, since the low-profile fuel tank is formed and the fuel supply port is provided near the side surface of the upper revolving structure, the worker can easily refuel from the ground.
Further, since the battery is relocated to the upper portion of the fuel tank and the fuel tank is expanded by utilizing the empty space of the battery, it is possible to secure a predetermined fuel storage amount while maintaining a low performance while maintaining the performance. It was Further, since the fueling port provided on the upper surface of the fuel tank is slightly inclined outward, the visibility inside the fueling port is improved and the workability such as the easy insertion and removal of the fueling nozzle is improved. became. As described above, it is not necessary to go up to the truck shoe or the upper revolving structure every time the fuel is replenished, so that the refueling time can be shortened and the burden on the operator can be reduced. Further, by increasing the bottom area of the fuel tank and decreasing its height, the center of gravity of the fuel tank and the contained fuel is lowered. Therefore, the bending moment and the torsion moment caused by vibrations and impacts during excavation, turning start and stop, etc. are reduced, and the stress generated in the fuel tank main body or the mounting portion is reduced. As a result, troubles such as cracks in the fuel tank can be prevented, and the rigidity of the fuel tank main body and the mounting portion can be reduced by further reducing the plate thickness, thereby reducing the cost.
【図１】本発明請求項１の燃料タンクを装備した油圧シ
ョベル本体の要部側面図である。FIG. 1 is a side view of essential parts of a hydraulic excavator main body equipped with a fuel tank according to claim 1 of the present invention.
【図２】図１のＢより見た上部旋回体の要部正面図であ
る。FIG. 2 is a front view of a main part of the upper swing body seen from FIG. 1B.
【図３】本発明請求項２の燃料タンクを装備した上部旋
回体の要部側面図である。FIG. 3 is a side view of a main part of an upper revolving structure equipped with the fuel tank according to claim 2 of the present invention.
【図４】図３のＣより見た上部旋回体の要部正面図であ
る。FIG. 4 is a front view of a main part of the upper swing body viewed from C of FIG. 3;
【図５】本発明請求項３の燃料タンクの要部正面図であ
る。FIG. 5 is a front view of a main part of the fuel tank according to claim 3 of the present invention.
【図６】本発明請求項４のカバ−を装着した上部旋回体
の要部側面図である。FIG. 6 is a side view of an essential part of an upper revolving structure equipped with a cover according to claim 4 of the present invention.
【図７】従来技術の燃料タンクを装備した油圧ショベル
本体の要部側面図である。FIG. 7 is a side view of a main part of a hydraulic excavator main body equipped with a conventional fuel tank.
【図８】図７のＡより見た上部旋回体の要部正面図であ
る。FIG. 8 is a front view of a main part of the upper swing body viewed from A of FIG. 7.
１ 下部走行体 ２ クロ−ラ ３，１２，１５ 上部旋回体 ４，１３，２０ サイドデッキ ９，１４，１６ 燃料タンク １０，２２ 給油口 １１ バッテリ １８ 取付け台 ２３ カバ− ２５ 給油穴 1 Lower traveling body 2 Crawler 3,12,15 Upper revolving structure 4,13,20 Side deck 9,14,16 Fuel tank 10,22 Refueling port 11 Battery 18 Mounting base 23 Cover 25 Refueling hole
Claims (4)
ッテリなどを配設している建設機械において、上部旋回
体を形成する旋回フレ−ムのサイドデッキに、上記上部
旋回体のほぼ半分程度の高さに形成した低形の燃料タン
クを載置し、その給油口を上記燃料タンクの上面部に突
設し、かつ上記給油口を上記上部旋回体の側面部近くに
配設して地上からの燃料補給を可能にしたことを特徴と
する建設機械の燃料タンク。1. In a construction machine in which an engine, a fuel tank, a battery, etc. are arranged in an upper revolving structure, a side deck of a revolving frame forming the upper revolving structure has approximately half of the upper revolving structure. A low-profile fuel tank formed at a height is placed, its fuel filler port is projected from the upper surface of the fuel tank, and the fuel filler port is disposed near the side surface of the upper revolving superstructure so that A fuel tank for construction machinery, which is capable of refueling.
移設し、その空きスペ−スを利用して上記燃料タンクを
拡張し、所定の燃料収容量を確保したことを特徴とす
る、請求項１記載の建設機械の燃料タンク。2. The battery is transferred to the upper portion of the fuel tank, and the empty space is utilized to expand the fuel tank to secure a predetermined fuel storage amount. Fuel tank for the listed construction machinery.
の側面部に向って若干傾斜させたことを特徴とする、請
求項１及び請求項２記載の建設機械の燃料タンク。3. The fuel tank for a construction machine according to claim 1, wherein the fuel filler port of the fuel tank is slightly inclined toward the side surface of the upper swing body.
タンク及びバッテリの上面側にわたって、かつその側面
側を覆うように形成したカバ−をヒンジを介して上下方
向に開閉できるように設け、また上記カバ−の側面部の
上記給油口に対応する部分に給油用の穴を設け、上記カ
バ−を開閉することなく給油できるようにしたことを特
徴とする、請求項２及び請求項３記載の建設機械の燃料
タンク。4. A cover extending from the front side of the side deck to the upper side of the fuel tank and the battery and covering the side of the side deck is provided so as to be opened and closed in the vertical direction via a hinge. 4. The construction according to claim 2 or 3, characterized in that a hole for oil supply is provided in a portion of the side surface of the cover corresponding to the oil supply port so that oil can be supplied without opening and closing the cover. Machine fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22572994A JPH0858403A (en) | 1994-08-25 | 1994-08-25 | Fuel tank of construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22572994A JPH0858403A (en) | 1994-08-25 | 1994-08-25 | Fuel tank of construction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0858403A true JPH0858403A (en) | 1996-03-05 |
Family
ID=16833913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22572994A Pending JPH0858403A (en) | 1994-08-25 | 1994-08-25 | Fuel tank of construction machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0858403A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1191373A (en) * | 1997-09-22 | 1999-04-06 | Hitachi Constr Mach Co Ltd | Fuel tank for construction machine |
| JP2000129720A (en) * | 1998-10-29 | 2000-05-09 | Kato Works Co Ltd | Revolving working machine |
| JP2001323500A (en) * | 2000-05-15 | 2001-11-22 | Kubota Corp | Swing working machine |
| JP2003064724A (en) * | 2001-08-28 | 2003-03-05 | Kubota Corp | Revolving working machine |
| JP2005088783A (en) * | 2003-09-18 | 2005-04-07 | Kobelco Contstruction Machinery Ltd | Method of manufacturing construction machine and guard panel |
| JP2005247147A (en) * | 2004-03-04 | 2005-09-15 | Hitachi Constr Mach Co Ltd | Construction machine |
| JP2010229740A (en) * | 2009-03-27 | 2010-10-14 | Hitachi Constr Mach Co Ltd | Construction machine |
-
1994
- 1994-08-25 JP JP22572994A patent/JPH0858403A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1191373A (en) * | 1997-09-22 | 1999-04-06 | Hitachi Constr Mach Co Ltd | Fuel tank for construction machine |
| JP2000129720A (en) * | 1998-10-29 | 2000-05-09 | Kato Works Co Ltd | Revolving working machine |
| JP2001323500A (en) * | 2000-05-15 | 2001-11-22 | Kubota Corp | Swing working machine |
| JP2003064724A (en) * | 2001-08-28 | 2003-03-05 | Kubota Corp | Revolving working machine |
| JP2005088783A (en) * | 2003-09-18 | 2005-04-07 | Kobelco Contstruction Machinery Ltd | Method of manufacturing construction machine and guard panel |
| JP2005247147A (en) * | 2004-03-04 | 2005-09-15 | Hitachi Constr Mach Co Ltd | Construction machine |
| JP2010229740A (en) * | 2009-03-27 | 2010-10-14 | Hitachi Constr Mach Co Ltd | Construction machine |
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