| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a work machine capable of improving cooling performance of hydraulic oil.SOLUTION: A work machine includes a cooling fan for generating cooling air, a hydraulic oil tank, a radiator 2 for cooling the cooling water of an engine, an oil cooler 1 arranged in parallel with the radiator 2 with respect to the flow of the cooling air so as to cool return hydraulic oil from hydraulic equipment provided in the work machine, a bypass inlet pipe 7 branched from an oil cooler inlet pipe 4 which is a hydraulic oil return pipe connected to an inlet of the oil cooler 1, and a returning branch pipe group 8 having a plurality of heat radiating pipes 80 so as to cool the return hydraulic oil flowing from the bypass inlet pipe 7 and to allow the cooled return hydraulic oil to flow out to the hydraulic oil tank. The returning branch pipe group 8 is disposed in the upstream side or the downstream side of the oil cooler 1 and/or the radiator 2 with respect to the flow of the cooling air.</p> |
