| 摘要 |
PROBLEM TO BE SOLVED: To form a heat exchanger compactly and make cooling capacity of a second cooler variable in a large swinging width, thereby making equipment compatible with a working environment.SOLUTION: A hydraulic shovel 1 includes a vehicle body frame 5, an engine 8, a cooling fan 9, and a heat exchanger 14. The heat exchanger 14 includes a supporting frame body 15 installed on the vehicle body frame 5 to surround the cooling fan 9, an oil cooler 17 installed inside the supporting frame body 15 opposite the cooling fan 9, for cooling a fluid body to be cooled by having cooling air pass therethrough, and a fuel cooler 19 disposed opposite the oil cooler 17 on an upstream side of the cooled air, for cooling other fluid bodies. A moving device 20 is provided between the supporting frame body 15 and the fuel cooler 19, for changing a receiving surface area of the fuel cooler 19 for receiving the cooling air.SELECTED DRAWING: Figure 5 |
