TRAVELING DEVICE FOR DUMP-TRUCK

摘要

PROBLEM TO BE SOLVED: To provide a traveling device for a dump-truck in which a flange for providing a bearing to support a shaft located between a motor and a reduction gear on the inner circumferential surface of a spindle by the casting.

SOLUTION: A spindle 10 is formed by welding a vehicle body side member 10c to be fixed to the vehicle body of a dump-truck to a reduction gear side member 10d located on a reduction gear 14 side from the vehicle body side member 10c (where the symbol 10e denotes a welded part). The reduction gear side member 10d is located on the outer circumferential side of part of a shaft 13 located at the position where the distance to a coupling 40 as a coupling part between a motor 8 and the shaft 13 is equal to the distance to a first sun gear 15a as a coupling part between the reduction gear 14 and the shaft 13. A flange 10f for mounting a support bearing 50 is formed on the inner circumferential surface of the reduction gear side member 10d by the casting together with the reduction gear side member 10d.

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