Komatsu Corporation

Komatsu Utility Co., Ltd.

Hitachi Construction Machinery Co., Ltd.

Komatsu Zenoah Co.

Yoshiteru Kubo

Takaharu Nishimura

Kouhei Urase

Shinichi Senba

Hayato Kinoshita

Takenobu Andou

Osamu Kitajima

Takeshi Endou

Kiyoshi Sugiyama

Kazuhisa Satou

Sachio Shimizu

Hiroyuki Takayama

Jun Noguchi

Kenichi Shimizu

An object of the present invention is to provide a construction machine which precipitates the removal of earth that is churned up onto a vehicle body from the vehicle body, which reduces transfer loads on a blade bracket, which improves the attachability of the blade bracket, and which achieves standardization of the blade bracket. The construction machine according to the present invention is constituted such that a frame of a crawler belt-type traveling body comprises a center frame, a pair of truck frames disposed on the outside of two side portions of the center frame, a connecting member which connects the center frame to the truck frames, and a blade bracket which is joined to the center frame and the connecting member.

Construction machine

Skid-steer loader

A construction machine where a load acting on a vehicle body during an operation is transferred to ensure the strength of the vehicle body, thereby improving reliability including welding reliability. In the construction machine, at least one of the height differences between an upper face or a lower face of the center frame at a joining portion between the center frame and the connecting member and an upper face or a lower face of a center joining portion of the connecting member is set respectively at a dimension that is approximately equal to or less than the thickness of an upper face plate or a lower face plate of the center frame.

A construction machine where an operating load is transferred to a location having good rigidity, thereby ensuring the strength of a vehicle body and increasing the load-withstanding strength in relation to running loads. The frame of the lower traveling body of the construction machine comprising a hollow center frame having an upper plate with an attachment ring, a lower plate, and side plates that surrounding sides of the frame and that jut out from the attachment ring, and reinforcing ribs which connect the upper plate to the lower plate in the interior of the center frame beneath the attachment ring.

Growing community of inventors

Fukuoka, Japan

Yoshiteru Kubo