To provide a cooling system of a construction machine that can stop and reverse a cooling fan quickly without increasing the load on a fan motor.SOLUTION: A radiator 18a and an oil cooler 18b in ventilation paths 17a, 17b are cooled with cooling fans 19a, 19b while the radiator ventilation path 17a and the oil cooler ventilation path 17b are made adjacent across a partition wall 21 and a movable plate 22a opening and closing the partition wall 21 is provided and held at a closing position by fixing devices 31, 33. For example, when the cooling fan 19a is reversed, the fixing devices 31, 33 are reset and the cooling fan 19a is stopped from being driven. The movable plate 22a is opened with differential pressure generated between the ventilation paths 17a, 17b, air currents Air3, Air1, Air4, and Air5 to circulate between the radiator ventilation path 17a and the oil cooler ventilation path 17b are generated, and when the air current Air5 hinders the cooling fan 19a from rotating and the cooling fan stops, the cooling fan is driven reversely.SELECTED DRAWING: Figure 7
【課題】ファンモータの負荷を増大させることなく、迅速に冷却ファンを停止・逆転できる建設機械の冷却システムを提供する。【解決手段】隔壁21を介してラジエータ通風路17a及びオイルクーラ通風路17bを隣接させ、隔壁21を開閉する可動板22aを設けて固定装置31,33により閉鎖位置に保持した上で、各通風路17a,17b内のラジエータ18a及びオイルクーラ18bを冷却ファン19a,19bで冷却する。例えば冷却ファン19aを逆転させる際には、固定装置31,33を解除して冷却ファン19aの駆動を中止する。通風路17a,17bの間に生じた差圧により可動板22aが開放され、ラジエータ通風路17aとオイルクーラ通風路17bとの間を循環する気流Air3,Air1,Air4,Air5が生起され、気流Air5により冷却ファン19aの回転が妨げられて停止すると、これを逆方向に駆動する。【選択図】図7
COOLING SYSTEM OF CONSTRUCTION MACHINE
建設機械の冷却システム
2023-10-05
Patent
Electronic Resource
Japanese
IPC: | F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
COOLING SYSTEM FOR ELECTRIC CONSTRUCTION MACHINE, AND ELECTRIC CONSTRUCTION MACHINE INCLUDING SAME
European Patent Office | 2025
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