Kabushiki Kaisha Kobe Seiko Sho

Kobelco Construction Machinery Co., Ltd.

Eiji Maeba

Isao Miyachi

Shuhei Kaiso

Asuka Ushiroguchi

Hidetoshi Suzuki

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.

Device removing/re-inserting structure, and device removing/re-inserting method for construction machine

A hydraulic excavator includes a cab disposed on a front portion of a revolving upper structure. An internal combustion engine is mounted in a rear portion of the revolving upper structure, and an directional control valve is disposed in the front portion of the revolving upper structure at a position spaced laterally from the cab. The directional control valve is arranged longitudinally of the revolving upper structure. A hydraulic oil tank and a fuel tank for the internal combustion engine are disposed on either side of the directional control valve. By virtue of a space provided between the directional control valve and the cab, transmission of heat and operation noise from the directional control valve to the cab is greatly suppressed.

Hydraulic working machine

A hydraulic excavator includes a cab disposed on a front portion of a revolving upper structure. An internal combustion engine is mounted in a rear portion of the revolving upper structure, and a directional control valve is disposed in the front portion of the revolving upper structure at a position spaced laterally from the cab. The directional control valve is arranged longitudinally of the revolving upper structure. A hydraulic oil tank and a fuel tank for the internal combustion engine are disposed on either side of the directional control valve. By virtue of a space provided between the directional control valve and the cab, transmission of heat and operation noise from the directional control valve to the cab is greatly suppressed.

A pneumatic circuit for a wheel mounted shovel wherein an air passage which extends through a swivel joint of the wheel mounted shovel is communicated commonly with a parking brake device and a suspension locking device of the wheel mounted shovel. The pneumatic circuit comprises a solenoid operated control valve communicated with a pressure source by way of a first air passage. The control valve is communicated with a working/service brake device by way of a second air passage. A third air passage is also connected to the control valve and is branched at a location on the downstream side of a swivel joint of the wheel mounted shovel into fourth and fifth air passages connected to the parking brake device and suspension locking device, respectively. An electric circuit is connected to the pneumatic circuit and includes a manually operable change-over switch for controlling the control valve to selectively connecting the first air passage to either one or neither one of the second and third air passages.

Growing community of inventors

Hiroshima, Japan

Eiji Maeba