Kobelco Construction Machinery Co., Ltd.

Tsuguhito Fujita

Takanori Yamasaki

Masakazu Ozaki

Ichiro Wada

Yoshinobu Hosaka

Koichi Yamashita

Shinji Yamashita

Tsukasa Taguchi

A method and an apparatus efficiently and reliably cut a steel frame. The cutting method includes locating a cutting torch apart from the steel frame held by a holding device in a direction along a cutting surface, moving the cutting torch from a cutting start position to a first cutting end position in a first feed direction perpendicular to a supply direction along the cutting surface, while applying a flame from a fire port of the cutting torch in the supply direction and supplying cutting oxygen to thereby cut a part of the cutting surface, stopping the cutting torch at the first cutting end position and thereafter cutting an uncut part by moving the cutting torch from the first cutting end position in a second feed direction opposite to the first feed direction.

Steel-frame cutting method and device

An attachment of a work machine includes first and second attachment bodies connectable to each other quickly and easily. The first attachment body includes first side plates including first projecting portions formed with notches, and the second attachment body includes second side plates including second projecting portions and a fitting pin inserted through the second projecting portions. The interval between the first side plates is larger than the interval between the second side plates. The first and second attachment bodies are interconnected while the first projecting portions are disposed outside the second projecting portions, and the parts of the fitting pin protruding outward beyond the second projecting portions are fitted with the notches.

Attachment for work machine

Provided is a construction machine allowing a deck to be compact while facilitating water supply to a urea tank and access to a grease supply device. The construction machine includes a hose reel for grease supply disposed on a front-side portion of a deck of an upper slewing body, and a urea tankdisposed rearward of the hose reel on the deck and stores urea water for exhaust gas purification. The urea tank has a front surface provided with a water inlet for resupplying urea water. The hose reel is disposed deviated from the water inlet widthwise of the upper slewing body. The water inlet has a distal end located on the front side of a rear end of the hose reel.

Construction machine

Growing community of inventors

Hiroshima, Japan

Tsuguhito Fujita