Komatsu Corporation

Komatsu Utility Co., Ltd.

Akira Misu

Yoshiyuki Takano

Kouhei Miyazaki

Yuuki Saitou

Yasuharu Kimura

Kouichi Yoshita

Excavator

The present invention provides a center frame designed so that a center member, legs, and a lower plate can be formed by bending metal sheets, and to provide a manufacturing method for the center frame. A pair of front legsand a pair of rear legsare formed by bending metal sheets so as to have substantially reverse U-shaped cross-sections. The center memberis formed by bending a metal sheet so as to have a substantially square U-shaped cross-section. The front legs, the rear legs, the center member, a center front plate, and a center rear plateare placed on and securely weld to the lower plate, which has an approximate X shape, in a plan view, and an isosceles trapezoidal shape in a lateral cross-section. This eliminates the need for expensive molds and makes it possible to easily manufacture the center frame from the center member, legs, and lower plate formed by bending metal sheets.

Center frame in crawler travel device and method for manufacturing center frame

Growing community of inventors

Saitama, Japan

Akira Misu