Kobelco Construction Machinery Co., Ltd.

Yuji Kawakami

Keiji Yamamoto

Akira Kinoshita

Provided is an upper slewing body comprising: an upper frame, a cab including a bottom frame, a plurality of pillars including an outer pillar, and an entrance; an antivibration mount; a displacement restrainer restraining a cab displacement in a direction of rising away from the upper frame; and a reinforcing member attached to a lower end of the outer pillar for reinforcing a joint between the lower end and the bottom frame. The displacement restrainer includes a penetrating member vertically penetrating the reinforcing member and the bottom frame and secured to the upper frame. The displacement restrainer and the reinforcing member includes respective load transmitting surfaces for transmitting a load to each other above the joint between the bottom frame and the outer pillar when the cab is displaced in the rising direction by a specific amount or more.

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Hiroshima, Japan

Yuji Kawakami