JPH0681367A - Construction machine - Google Patents

Construction machine

Info

Publication number
JPH0681367A
JPH0681367A JP25739692A JP25739692A JPH0681367A JP H0681367 A JPH0681367 A JP H0681367A JP 25739692 A JP25739692 A JP 25739692A JP 25739692 A JP25739692 A JP 25739692A JP H0681367 A JPH0681367 A JP H0681367A
Authority
JP
Japan
Prior art keywords
machine room
radiator
engine
cooler
cooling
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.)
Granted
Application number
JP25739692A
Other languages
Japanese (ja)
Other versions
JP2850077B2 (en
Inventor
Hironori Sugawara
浩紀 菅原
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP4257396A priority Critical patent/JP2850077B2/en
Publication of JPH0681367A publication Critical patent/JPH0681367A/en
Application granted granted Critical
Publication of JP2850077B2 publication Critical patent/JP2850077B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08Superstructures; Supports for superstructures
    • E02F9/0858Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

PURPOSE:To improve the heat balance of a cooler and the cooling efficiency of an operator's cab by quickly discharging the high-temperature cooling air passing through the cooler to the outside of an engine room. CONSTITUTION:Multiple exhaust ports 22, 22,... are provided on a lower cover 21 located between an engine 10 and a radiator 12 at the position near the exhaust side of the radiator 12 than the gap S between the side plate section 8B and partition plate 8D of an engine room 8. The cooling air sucked into the engine room 8 from air vents 9 by a cooling fan 11 and kept at a high temperature after passing through the radiator 12 is quickly discharged to the outside of the engine room 8 via exhaust ports 22.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えば油圧ショベル,
油圧クレーン等の機械室を有する建設機械に関し、特
に、機械室の下面側に下カバーが設けられた建設機械に
関する。
BACKGROUND OF THE INVENTION The present invention relates to a hydraulic excavator,
The present invention relates to a construction machine having a machine room such as a hydraulic crane, and more particularly to a construction machine having a lower cover provided on the lower surface side of the machine room.

【0002】[0002]

【従来の技術】図4ないし図6に従来技術による建設機
械として油圧ショベルを例に挙げて示す。
2. Description of the Related Art FIGS. 4 to 6 show a hydraulic excavator as an example of a conventional construction machine.

【0003】図において、1は走行用油圧モータ(図示
せず)等が設けられた下部走行体、2は該下部走行体1
に設けられた旋回装置、3は該旋回装置2を介して下部
走行体1上に旋回可能に搭載された作業機本体としての
上部旋回体をそれぞれ示し、該上部旋回体3は、骨組構
造をなす旋回フレーム4と、該旋回フレーム4の前部側
に設けられた運転室5と、該運転室5の後部側に位置し
て旋回フレーム4上に設けられた後述の機械室8と、該
機械室8の後部側に位置して旋回フレーム4に設けられ
たカウンタウェイト6とから構成されている。
In the drawing, 1 is a lower traveling body provided with a traveling hydraulic motor (not shown) and the like, and 2 is the lower traveling body 1.
The upper and lower revolving units 3 provided on the lower revolving unit 1 are revolvably mounted on the lower traveling unit 1 via the revolving unit 2, respectively, and the upper revolving unit 3 has a frame structure. The turning frame 4 formed, a driver's cab 5 provided on the front side of the turning frame 4, a machine room 8 to be described later, which is located on the rear side of the operator's cab 5 and is provided on the turning frame 4, The counterweight 6 is provided on the revolving frame 4 at the rear side of the machine room 8.

【0004】7は上部旋回体3の前部に設けられた作業
装置を示し、該作業装置7は、図5にも示す如く、旋回
フレーム4の前部に取付ブラケット4A,4Aを介して
回動可能に設けられたブーム7Aと、該ブーム7Aの先
端側に回動可能に設けられたアーム7Bと、該アーム7
Bの先端側に回動可能に設けられたバックホウ式のバケ
ット7Cとから構成され、これらのブーム7A,アーム
7B,バケット7Cは、ブームシリンダ7D,アームシ
リンダ7E,バケットシリンダ7Fによってそれぞれ作
動されるものである。
Reference numeral 7 denotes a working device provided in the front portion of the upper swing body 3, and the working device 7 is mounted on the front portion of the swing frame 4 via mounting brackets 4A, 4A as shown in FIG. A boom 7A movably provided, an arm 7B rotatably provided at the tip side of the boom 7A, and the arm 7
It comprises a backhoe type bucket 7C rotatably provided on the tip side of B, and these boom 7A, arm 7B and bucket 7C are respectively operated by a boom cylinder 7D, an arm cylinder 7E and a bucket cylinder 7F. It is a thing.

【0005】8は運転室5の後部側に位置して旋回フレ
ーム4上に設けられ、内部に後述のエンジン10,冷却
ファン11,ラジエータ12,油圧ポンプ(図示せず)
等を収容した機械室を示し、該機械室8は、図5,図6
に示す如く、底部側に位置する底板部8Aと、該底板部
8Aの外側に立設された側板部8B,8B,…と、該各
側板部8Bの上側に設けられた天板部8Cとからボック
ス状に構成され、該各側板部8Bのうち運転室5側の側
板部8Bには仕切板8Dが設けられている。また、前記
各側板部8Bのうち図6中左側に位置する一の側板部8
Bには機械室8内に外気を流入させるための複数の通気
口9,9,…が形成され、前記底板部8Aには後述の下
カバー13が設けられている。
An engine 8 is provided on the revolving frame 4 at the rear side of the operator's cab 5, and has an engine 10, a cooling fan 11, a radiator 12 and a hydraulic pump (not shown), which will be described later.
And the like, the machine room 8 is shown in FIG.
As shown in FIG. 5, a bottom plate portion 8A located on the bottom side, side plate portions 8B, 8B, ... Standing on the outside of the bottom plate portion 8A, and a top plate portion 8C provided on the upper side of each side plate portion 8B. Is formed into a box shape, and a partition plate 8D is provided on the side plate portion 8B of the side plate portions 8B on the cab 5 side. Further, one of the side plate portions 8B located on the left side in FIG.
A plurality of vent holes 9 for allowing outside air to flow into the machine room 8 are formed in B, and a bottom cover 13 described later is provided in the bottom plate portion 8A.

【0006】10は機械室8内に設けられたエンジン、
11は該エンジン10の出力軸10Aに取付けられた冷
却ファンをそれぞれ示し、該冷却ファン11はエンジン
10の回転によって駆動され、各通気口9を介して矢示
A方向から機械室8内に外気を吸込み、冷却風を発生さ
せるものである。
[0006] 10 is an engine provided in the machine room 8,
Reference numerals 11 respectively denote cooling fans attached to the output shaft 10A of the engine 10. The cooling fans 11 are driven by the rotation of the engine 10 and enter the outside air into the machine room 8 from the direction of the arrow A through the respective vents 9. To generate cooling air.

【0007】12は各通気口9側に位置して機械室8内
に設けられた冷却器としてのラジエータを示し、該ラジ
エータ12は冷却水が循環する流通管と、該流通管に設
けられた多数の冷却フィン等とから構成され、エンジン
10のウォータジャケットと給水管,排水管(いずれも
図示せず)を介して接続されている。そして、該ラジエ
ータ12は、流通管内に高温の冷却水を流通させつつ、
この冷却水を冷却ファン11によって冷却し、所定温度
以下になった冷却水をエンジン10に戻して冷却するも
のである。
Reference numeral 12 denotes a radiator as a cooler which is provided inside the machine room 8 and is located on the side of each ventilation port 9. The radiator 12 is provided on a circulation pipe through which cooling water circulates and on the circulation pipe. It is composed of a large number of cooling fins and the like, and is connected to the water jacket of the engine 10 via a water supply pipe and a drain pipe (neither is shown). Then, the radiator 12 allows high-temperature cooling water to flow through the flow pipe,
This cooling water is cooled by the cooling fan 11, and the cooling water that has reached a predetermined temperature or lower is returned to the engine 10 to be cooled.

【0008】13はエンジン10とラジエータ12との
間に位置して機械室8の底板部8Aに設けられた下カバ
ーを示し、該下カバー13は、旋回フレーム4に前後方
向に亘って設けられたセンタビームと該センタビームの
左右に離間して配設されたサイドビーム(いずれも図示
せず)との間に設けられるもので、機械室8の下側を施
蓋するように冷却ファン11およびラジエータ12の下
側を覆っている。
Reference numeral 13 denotes a lower cover which is provided between the engine 10 and the radiator 12 and which is provided on the bottom plate portion 8A of the machine room 8. The lower cover 13 is provided on the revolving frame 4 in the front-rear direction. Is provided between the center beam and side beams (not shown) which are arranged apart from each other on the right and left sides of the center beam, and the cooling fan 11 is provided to cover the lower side of the machine room 8. And covers the underside of the radiator 12.

【0009】従来技術による油圧ショベルは上述の如き
構成を有するもので、機械室8内の油圧ポンプから下部
走行体1の走行用油圧モータや各シリンダ7D,7E,
7Fに圧油を給排することにより、走行や作業装置7に
よる堀削等の作業を行うようになっている。
The hydraulic excavator according to the prior art has the above-mentioned structure, and includes a hydraulic pump in the machine room 8 to a hydraulic motor for traveling of the lower traveling body 1 and each cylinder 7D, 7E ,.
By supplying / discharging the pressure oil to / from the 7F, work such as traveling and excavation by the working device 7 is performed.

【0010】また、エンジン10の駆動によって冷却フ
ァン11が回転すると、各通気口9を介して外気が矢示
A方向から機械室8内に吸込まれ、冷却風が発生する。
そして、この冷却風はラジエータ12を通過して、該ラ
ジエータ12内を循環する冷却水を冷却しつつ、エンジ
ン10の周囲等を矢示B方向に流れて外部に排出され
る。
When the cooling fan 11 is rotated by the driving of the engine 10, the outside air is sucked into the machine room 8 from the direction of the arrow A through each ventilation port 9 to generate cooling air.
Then, the cooling air passes through the radiator 12, cools the cooling water circulating in the radiator 12, and flows around the engine 10 in the arrow B direction to be discharged to the outside.

【0011】[0011]

【発明が解決しようとする課題】ところで、上述した従
来技術による油圧ショベルでは、冷却ファン11の回転
によって各通気口9から矢示A方向に外気を吸込んで冷
却風を発生させ、この冷却風によってラジエータ12を
冷却するようになっている。しかし、従来技術によるも
のでは、機械室8内に吸込んだ冷却風の通り道が積極的
に設けられていないから、図5に示す如く、ラジエータ
12を通過した冷却風はエンジン10等に衝突した後、
方向性,行き場を失って機械室8内に滞留し易い。
By the way, in the hydraulic excavator according to the above-mentioned prior art, the rotation of the cooling fan 11 sucks the outside air in the direction of the arrow A from each ventilation port 9 to generate the cooling air, and the cooling air causes the cooling air to flow. The radiator 12 is cooled. However, in the prior art, since the passage of the cooling air sucked into the machine room 8 is not positively provided, as shown in FIG. 5, the cooling air passing through the radiator 12 collides with the engine 10 or the like. ,
It loses its directionality and destination, and tends to stay in the machine room 8.

【0012】このため、上述した従来技術によるもので
は、機械室8内に滞留した冷却風によって機械室8内の
温度が上昇し、ヒートバランスが悪化して、ラジエータ
12を循環する冷却水温が上昇してしまい、ラジエータ
12の冷却効率やエンジン10の燃費等が大幅に低下す
るという問題がある。
Therefore, according to the above-mentioned conventional technique, the temperature inside the machine room 8 rises due to the cooling air staying inside the machine room 8, the heat balance deteriorates, and the temperature of the cooling water circulating through the radiator 12 rises. Therefore, there is a problem that the cooling efficiency of the radiator 12 and the fuel consumption of the engine 10 are significantly reduced.

【0013】また、機械室8内に滞留した高温の冷却風
の一部は、図5に示す如く、機械室8の側板部8Bと仕
切板8Dとの間の隙間Sから運転室5側に流出するか
ら、運転室5の温度が上昇し、該運転室5内の冷房効率
等が低下して居住性等が大幅に低下するという問題があ
る。
Further, as shown in FIG. 5, part of the high-temperature cooling air that has accumulated in the machine room 8 moves from the gap S between the side plate portion 8B of the machine room 8 and the partition plate 8D to the driver room 5 side. Since there is an outflow, there is a problem that the temperature of the driver's cab 5 rises, the cooling efficiency and the like in the driver's cab 5 decreases, and the habitability and the like significantly decrease.

【0014】本発明は上述した従来技術の問題に鑑みな
されたもので、冷却器を通過した高温の冷却風を速やか
に機械室の外部に排出し、冷却器のヒートバランスや運
転室の冷房効率等を向上できるようにした建設機械を提
供することを目的とする。
The present invention has been made in view of the above-mentioned problems of the prior art, and quickly discharges the high-temperature cooling air that has passed through the cooler to the outside of the machine room, thereby heat balance of the cooler and cooling efficiency of the operator's cab. It is an object of the present invention to provide a construction machine capable of improving the above.

【0015】[0015]

【課題を解決するための手段】上述した課題を解決する
ために、本発明が採用する構成は、作業機本体と、該作
業機本体の前部側に設けられた運転室と、該運転室の後
部側に位置して前記作業機本体に設けられ、通気口が形
成された機械室と、該機械室内に設けられたエンジン
と、前記機械室内に設けられ、該エンジンによって駆動
される冷却ファンと、前記通気口側に位置して前記機械
室内に設けられ、内部を循環する流体を該冷却ファンに
よって冷却する冷却器と、前記機械室の下面側に設けら
れた下カバーとからなる建設機械において、前記下カバ
ーには前記エンジンと前記冷却器との間に位置して排気
口を設けたことを特徴とする。
In order to solve the above-mentioned problems, the structure adopted by the present invention is a working machine main body, a driver's cab provided on the front side of the working machine main body, and the operator's cab. A machine room located on the rear side of the work machine body and provided with a ventilation hole, an engine provided in the machine room, and a cooling fan provided in the machine room and driven by the engine And a cooler provided in the machine chamber located on the vent port side for cooling the fluid circulating therein by the cooling fan, and a lower cover provided on the lower surface side of the machine chamber. In the above, the lower cover is provided with an exhaust port located between the engine and the cooler.

【0016】[0016]

【作用】エンジンによって冷却ファンが回転駆動する
と、外気が通気口から機械室内に吸込まれ、冷却風が発
生する。そして、この冷却風は冷却器を通過して該冷却
器の流体を冷却しつつ、下カバーに設けられた排気口を
介して機械室の外部に排出される。
When the cooling fan is driven to rotate by the engine, the outside air is sucked into the machine chamber through the ventilation hole, and cooling air is generated. Then, this cooling air passes through the cooler to cool the fluid in the cooler and is discharged to the outside of the machine room through the exhaust port provided in the lower cover.

【0017】[0017]

【実施例】以下、本発明の実施例を図1ないし図3に基
づいて説明する。なお、実施例では前述した図4ないし
図6に示す従来技術と同一の構成要素に同一の符号を付
し、その説明を省略するものとする。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. In the embodiment, the same components as those of the prior art shown in FIGS. 4 to 6 described above are designated by the same reference numerals, and the description thereof will be omitted.

【0018】図中、21は従来技術で述べた下カバー1
3に代えて本実施例に適用される下カバーを示し、該下
カバー21は従来技術で述べた下カバー13とほぼ同様
に、旋回フレーム4のセンタビームとサイドビームとの
間に下側から取付けられるもので、エンジン10とラジ
エータ12との間に位置して機械室8の底板部8Aに設
けられている。しかし、本実施例による下カバー21に
は、後述の排気口22,22,…が設けられている点で
異なる。
In the figure, 21 is the lower cover 1 described in the prior art.
3 shows a lower cover applied to this embodiment, and the lower cover 21 is located between the center beam and the side beam of the revolving frame 4 from the lower side in the same manner as the lower cover 13 described in the prior art. It is attached and is provided on the bottom plate portion 8A of the machine room 8 located between the engine 10 and the radiator 12. However, the difference is that the lower cover 21 according to the present embodiment is provided with exhaust ports 22, 22 ,.

【0019】22,22,…はラジエータ12の下側に
位置して下カバー21に穿設された例えば4個の排気口
(2個のみ図示)を示し、該各排気口22は隙間Sより
もややラジエータ12の排気側寄りに位置して設けら
れ、その開口面積の合計は隙間Sの開口面積よりも広く
なるように形成されている。また、該各排気口22は図
2に示す如く、運転室5側寄りに位置して設けられてい
る。そして、該各排気口22は、機械室8内に流入しラ
ジエータ12を通過した冷却風を矢示C方向から機械室
8の外部に排出するものである。
, 22 are, for example, four exhaust ports (only two are shown) formed in the lower cover 21 below the radiator 12, and each exhaust port 22 extends from the gap S. It is provided so as to be slightly closer to the exhaust side of the radiator 12, and the total opening area thereof is formed to be larger than the opening area of the gap S. Further, as shown in FIG. 2, each exhaust port 22 is provided near the cab 5 side. The exhaust ports 22 exhaust the cooling air that has flowed into the machine chamber 8 and passed through the radiator 12 from the direction of the arrow C to the outside of the machine chamber 8.

【0020】本実施例による油圧ショベルは上述の如き
構成を有するもので、その基本的な作動については上述
した従来技術によるものと格別差異はない。
The hydraulic excavator according to the present embodiment has the above-described structure, and its basic operation is not particularly different from that according to the above-mentioned prior art.

【0021】然るに、本実施例では、エンジン10とラ
ジエータ12との間に位置する下カバー21に、ラジエ
ータ12の排気側で、かつ運転室5側寄りに位置して複
数の排気口22,22,…を設ける構成としたから、ラ
ジエータ12を通過して高温となった冷却風はエンジン
10等に衝突した後、各排気口22を介して機械室8の
外部に速やかに排出される。
However, in this embodiment, the lower cover 21 located between the engine 10 and the radiator 12 is provided with a plurality of exhaust ports 22, 22 on the exhaust side of the radiator 12 and on the side closer to the operator's cab 5. .. are provided, the cooling air that has passed through the radiator 12 and has a high temperature collides with the engine 10 and the like, and is then quickly discharged to the outside of the machine room 8 through the exhaust ports 22.

【0022】この結果、ラジエータ12を通過した高温
な冷却風が機械室8内に滞留するのを確実に防止して、
ヒートバランスを大幅に改善することができ、ラジエー
タ12の冷却効率やエンジン10の燃費等を大幅に向上
することができる。
As a result, the high-temperature cooling air that has passed through the radiator 12 is reliably prevented from staying in the machine room 8,
The heat balance can be significantly improved, and the cooling efficiency of the radiator 12 and the fuel efficiency of the engine 10 can be significantly improved.

【0023】また、各排気口22は、機械室8の側板部
8Bと仕切板8Dとの間の隙間Sよりもややラジエータ
12の排気側で、かつ運転室5側寄りに位置して設け、
その開口面積の合計が隙間Sの開口面積よりも大きくな
るように形成したから、ラジエータ12を通過した冷却
風を流路抵抗の小さい各排気口22に速やかに導いて機
械室8の外部に排出することができ、高温な冷却風が隙
間Sを介して運転室5側に流出するのを効果的に防止
し、該運転室5の温度上昇を防止して、冷房効率や居住
性等を大幅に向上することができる。
Further, each exhaust port 22 is provided at a position slightly closer to the exhaust side of the radiator 12 than the gap S between the side plate portion 8B of the machine room 8 and the partition plate 8D and closer to the driver's cab 5 side.
Since the total opening area is formed to be larger than the opening area of the gap S, the cooling air passing through the radiator 12 is promptly guided to each exhaust port 22 having a small flow path resistance and discharged to the outside of the machine room 8. It is possible to effectively prevent the high-temperature cooling air from flowing out to the driver's cab 5 side through the gap S, prevent the temperature of the driver's cab 5 from rising, and greatly improve the cooling efficiency and habitability. Can be improved.

【0024】なお、前記実施例では、ラジエータ12を
通過した冷却風をエンジン10等に衝突させた後、各排
気口22を介して外部に排出するものとして述べたが、
これに替えて、例えば図3に示す変形例の如く、エンジ
ン10側にラジエータ12の排気側を覆う冷却風ガイド
31を設け、該冷却風ガイド31によってラジエータ1
2を通過した冷却風を各排気口22側に導く構成として
もよい。
In the above embodiment, the cooling air passing through the radiator 12 is made to collide with the engine 10 and the like, and is then discharged to the outside through each exhaust port 22.
Instead of this, a cooling air guide 31 for covering the exhaust side of the radiator 12 is provided on the engine 10 side as in the modification shown in FIG.
The cooling air passing through 2 may be guided to each exhaust port 22 side.

【0025】また、前記実施例では、下カバー21に4
個の排気口22,22,…を設けるものとして述べた
が、本発明はこれに限らず、排気口を3個以下あるいは
5個以上設ける構成としてもよい。
In the above embodiment, the lower cover 21 has four
Although it has been described that the individual exhaust ports 22, 22, ... Are provided, the present invention is not limited to this, and three or less exhaust ports or five or more exhaust ports may be provided.

【0026】さらに、前記実施例では、冷却器としてラ
ジエータ12を例に挙げて説明したが、冷却器にオイル
クーラを含めてもよい。
Further, although the radiator 12 is taken as an example of the cooler in the above embodiment, the cooler may include an oil cooler.

【0027】さらにまた、前記実施例では、建設機械と
して油圧ショベルを例に挙げて説明したが、油圧クレー
ン等の他の建設機械にも広く適用することができる。
Furthermore, although the hydraulic excavator has been described as an example of the construction machine in the above embodiment, the present invention can be widely applied to other construction machines such as a hydraulic crane.

【0028】[0028]

【発明の効果】以上詳述した通り、本発明によれば、下
カバーにエンジンと冷却器との間に位置して排気口を設
ける構成としたから、冷却ファンによって通気口から機
械室内に吸込まれ、冷却器を通過して高温となった冷却
風を下カバーに設けられた排気口を介して機械室の外部
に速やかに排出することができる。この結果、高温な冷
却風が機械室内に滞留するのを確実に防止して、ヒート
バランスを改善することができ、冷却器の冷却効率やエ
ンジンの燃費等を向上することができる。
As described above in detail, according to the present invention, since the lower cover is provided with the exhaust port located between the engine and the cooler, the cooling fan sucks the air from the vent port into the machine room. Rarely, the cooling air that has passed through the cooler and becomes hot can be quickly discharged to the outside of the machine room through the exhaust port provided in the lower cover. As a result, it is possible to reliably prevent the high-temperature cooling air from staying in the machine room, improve the heat balance, and improve the cooling efficiency of the cooler and the fuel consumption of the engine.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例による油圧ショベルの機械室を
図6と同様の方向からみた一部破断の背面図である。
1 is a partially cutaway rear view of a machine room of a hydraulic excavator according to an embodiment of the present invention, as seen from the same direction as FIG.

【図2】図1中の機械室を上面側からみた一部破断の平
面図である。
FIG. 2 is a partially cutaway plan view of the machine room in FIG. 1 seen from the upper surface side.

【図3】本発明の変形例による油圧ショベルを示す図1
と同様の背面図である。
FIG. 3 is a view showing a hydraulic excavator according to a modification of the present invention.
It is a rear view similar to FIG.

【図4】従来技術による油圧ショベルの全体図である。FIG. 4 is an overall view of a conventional hydraulic excavator.

【図5】図4中の油圧ショベルを上面側からみた一部破
断の平面図である。
5 is a partially cutaway plan view of the hydraulic excavator in FIG. 4 seen from the upper surface side.

【図6】図5中の矢示VI−VI方向からみた一部破断の背
面図である。
FIG. 6 is a partially cutaway rear view seen from the direction of arrows VI-VI in FIG.

【符号の説明】[Explanation of symbols]

3 上部旋回体(作業機本体) 5 運転室 8 機械室 9 通気口 10 エンジン 11 冷却ファン 12 ラジエータ(冷却器) 21 下カバー 22 排気口 3 Upper revolving structure (work machine main body) 5 Driver's cab 8 Machine room 9 Vent 10 Engine 11 Cooling fan 12 Radiator (cooler) 21 Lower cover 22 Exhaust

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 作業機本体と、該作業機本体の前部側に
設けられた運転室と、該運転室の後部側に位置して前記
作業機本体に設けられ、通気口が形成された機械室と、
該機械室内に設けられたエンジンと、前記機械室内に設
けられ、該エンジンによって駆動される冷却ファンと、
前記通気口側に位置して前記機械室内に設けられ、内部
を循環する流体を該冷却ファンによって冷却する冷却器
と、前記機械室の下面側に設けられた下カバーとからな
る建設機械において、前記下カバーには前記エンジンと
前記冷却器との間に位置して排気口を設けたことを特徴
とする建設機械。
1. A working machine main body, a driver's cab provided on the front side of the working machine main body, and a ventilation port formed on the working machine main body located on the rear side of the operator's cab. Machine room,
An engine provided in the machine room, a cooling fan provided in the machine room and driven by the engine,
A construction machine comprising a cooler which is provided in the machine room and is located on the vent hole side, and cools a fluid circulating therein by the cooling fan, and a lower cover provided on the lower surface side of the machine room, A construction machine, wherein an exhaust port is provided in the lower cover between the engine and the cooler.
JP4257396A 1992-09-01 1992-09-01 Construction machinery Expired - Fee Related JP2850077B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4257396A JP2850077B2 (en) 1992-09-01 1992-09-01 Construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4257396A JP2850077B2 (en) 1992-09-01 1992-09-01 Construction machinery

Publications (2)

Publication Number Publication Date
JPH0681367A true JPH0681367A (en) 1994-03-22
JP2850077B2 JP2850077B2 (en) 1999-01-27

Family

ID=17305810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4257396A Expired - Fee Related JP2850077B2 (en) 1992-09-01 1992-09-01 Construction machinery

Country Status (1)

Country Link
JP (1) JP2850077B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007055534A (en) * 2005-08-26 2007-03-08 Komatsu Ltd Cooling device
JP2010265721A (en) * 2009-05-18 2010-11-25 Hitachi Constr Mach Co Ltd Cooling device for construction machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499001A (en) * 1972-04-06 1974-01-26
JPS6385527U (en) * 1986-11-26 1988-06-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499001A (en) * 1972-04-06 1974-01-26
JPS6385527U (en) * 1986-11-26 1988-06-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007055534A (en) * 2005-08-26 2007-03-08 Komatsu Ltd Cooling device
JP2010265721A (en) * 2009-05-18 2010-11-25 Hitachi Constr Mach Co Ltd Cooling device for construction machine

Also Published As

Publication number Publication date
JP2850077B2 (en) 1999-01-27

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