Kobelco Construction Machinery Co., Ltd.

Shuhei Kaiso

Hajime Nakashima

Eiji Maeba

A monitoring region for monitoring entry of an obstacle is set around a machine main body. A plurality of obstacle sensing sensors sense an obstacle in the monitoring region and sense an obstacle in different directions with respect to the machine main body. A construction machine accumulatively stores approach information indicating that an obstacle has been sensed by any of the plurality of obstacle sensing sensors in a specific period, and outputs the approach information to be displayed on a display device.

Obstacle monitoring system, construction machine, and obstacle monitoring method

A demountable pillaris demountably mounted to an upper frame bottom plateand a floor plate. A spaceris detachably attached to the demountable pillar. The spaceris detached in a state that an upper load is supported by a lifting boltto reduce the height of the demountable pillar, and the demountable pillaris demounted in a state that the upper load is supported by the other pillars. A fuel tankas a device is removed from between the upper frame bottom plateand the floor platein this state.

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Hiroshima, Japan

Shuhei Kaiso