To improve the cooling performance of an engine and improve the maintenance by facilitating the attachment and detachment of the element of the air suction cleaner of the engine of a construction machine, an agriculture or the like (hereafter, simply referred to as a construction machine) such as a hydraulic shovel, a self loader, a bulldozer, a wheel loader and a crawler loader in relation to the cooling structure of the construction machine.

The element 38 of an air cleaner 32 for an engine 8 provided frontward of at least any one cooler of a radiator 18 and an oil cooler 22 for working oil provided in the front side of the engine 8 mounted on an construction machine is provided so as to easily exchange it. A partition wall 4a partitioned between the radiator 18 and the oil cooler 22 is provided in the intake side of the cooling air of the front side of the radiator 18 and the oil cooler 22, and the intake of the cooling air can be facilitated.