Working machine

Abstract

To prevent complication of a drive device of a fan and damage of the fan in a work machine including the fan for cooling devices mounted therein.SOLUTION: A working machine includes a fan to generate airflow for cooling devices mounted on a machine body and airflow blown in a direction different from that of the airflow. The fan includes a central shaft which rotates around an axis, rotary blades each extending in a radial direction of the central shaft, and an angle change mechanism which changes an angle of each rotary blade relative to the central shaft by rotating the rotary blade about an axis as seen in the radial direction. The angle change mechanism includes a movable member that is movable in an axial direction of the central shaft, and a conversion mechanism which converts movement of the movable member into rotation of the rotary blades. The conversion mechanism includes insertion members each of which is inserted in the rotary blade in the radial direction, fastening members each of which fixes the rotary blade and the insertion member to each other, and a rotation mechanism which rotates the insertion members about the axis as seen in the radial direction in conjunction with movement of the movable member.SELECTED DRAWING: Figure 7

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