Kobelco Construction Machinery Co., Ltd.

Kenji Kawamoto

Shintaro Sakitani

Kaoru Adachi

Hiroshi Kanamaru

Hironori Tsukamoto

Chikara Ninomiya

Satoshi Mizukawa

Aturo Akiyama

Shouzou Fujiwara

Provided is a tank comprising a tank body and first and second reinforcement members. The tank body includes a first wall portion, a first opposing wall portion opposing to the first wall portion in a first direction, a second wall, and a second opposing wall portion opposing to the second wall in a second direction. The first reinforcement member is disposed across the first wall portion and the first opposing wall portion, the first reinforcement member having opposite ends welded to the first wall portion and the first opposing wall portion, respectively. The second reinforcement member is disposed across the second wall and the second opposing wall portion while spatially crossing the first reinforcement member, the second reinforcement member having opposite ends welded to the second wall and the second opposing wall portion, respectively.

Tank for construction machine

Power shovel

Counterweight for construction machine

A construction machine having a device for attaching and detaching a counterweight according to the present invention comprises a lower traveling body; an upper rotating body mounted rotatably on the lower traveling body; the upper rotating body having a support bed standing out from a rear part thereof; and a device for attaching and detaching a counterweight mounted on the support bed. The attaching and detaching device comprises a telescoping device having a lower end pivotally connected in the vicinity of the support bed, a restiform body suspended through a guide portion provided on the telescoping device; and oscillating structure for oscillating the telescoping device around the lower end as fulcrum. The oscillating structure displaces the telescoping device extended from a substantially vertical attitude to an inclined attitude when the counterweight is detached. According to the present invention, an inclined bed is not required, and locating of the counterweight to the support bed can be done easily.

Device for attaching and detaching a counterweight of construction machine

Growing community of inventors

Hiroshima, Japan

Kenji Kawamoto