| 摘要 |
PROBLEM TO BE SOLVED: To improve the maintenance property in an excavation work vehicle in which an engine is arranged using a rear part of a turning frame as an engine room, a cooling fan, a radiator or a hydraulic fluid cooler are arranged on one side of the engine room, and the cooling fan is a suction type to suck external air and generate a flow of cooling air from a cooler side to an engine side. SOLUTION: A dust-preventive net 45 having a structure split into two parts is arranged on an external air introduction side of the radiator 37 or the hydraulic fluid cooler 38 and is detachably provided. A dust-preventive net case 41 also serves as a bulkhead partitioning an engine room side and an external air side from each other, the dust-preventive net 45 is stored in two rows, and the dust-preventive net is taken out onto a rear side of a machine body or upward from the circumference of the case 41 for storage.
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