PROBLEM TO BE SOLVED: To reduce noise leaking out of an exhaust duct and to enable smooth exhaustion even if there is an obstacle such as a post-processing device projecting upward from an engine room.SOLUTION: The present invention relates to a cooling structure for a construction machine that has, in an engine room 31, a heat exchanger 34 and a cooling fan 33 for sucking air for cooling from outside the engine room 31 and passing it through the heat exchanger 34, and includes an exhaust duct 38 for exhausting the air having passed through the heat exchanger 34. The exhaust duct 38 is in a bent shape having a first duct part 38a communicating with the engine room 31 and extending toward the post-processing device 36 in an axial flow direction of the cooling fan 33 and a second duct part 38b extending upward from a connection part for the first duct part 38a and opened to the outside of the engine room 31, an engine 32 being not viewed directly from outside the engine room 31 through the exhaust duct 38.SELECTED DRAWING: Figure 2

    【課題】エンジンルームから上方に突出する後処理装置等の障害物が存在する場合でも、排気ダクトから漏れ出る騒音を低減するとともに、円滑な排気を可能とする。【解決手段】エンジンルーム31に、熱交換器34と、エンジンルーム31の外部から冷却用の空気を吸い込んで熱交換器34を通過させる冷却ファン33とが配置され、熱交換器34を通過した空気を排出するための排気ダクト38を有する建設機械の冷却構造であって、排気ダクト38は、エンジンルーム31に連通し、冷却ファン33の軸流方向に沿って、後処理装置36に向かって延びる第1ダクト部38aと、第1ダクト部38aとの接続部から上方に向かって延び、エンジンルーム31の外部に開口する第2ダクト部38bと、を有する屈曲形状であり、エンジンルーム31の外部から排気ダクト38を介してエンジン32を直視できないようになっている。【選択図】図2


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    Title :

    COOLING STRUCTURE FOR CONSTRUCTION MACHINE


    Additional title:

    建設機械の冷却構造


    Contributors:

    Publication date :

    2017-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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