Komatsu Corporation

Kabushiki Kaisha Komatsu Seisakusho

Kenji Nishikawa

Kazuya Imamura

Kikuo Ejima

Kazuhisa Suzuki

Hiroyasu Suda

Hirohide Sato

Yoshitaka Nishihara

Tairo Samejima

Shigeki Honda

Tatsunori Suwa

Haruhiro Tsubota

Masao Tsujino

Shigeki Iwasaki

A noise reducer for construction machinery, which efficiently reduces noise at low cost with durability, is provided. For this purpose, lamination plates (,) which are the plates being laminated are bonded, discretely at a predetermined interval (a,), to a part of or the entire of a noise generating element. Lamination plates (,A,,E) may be bonded discretely at a plurality of kinds of bonding intervals (a,, a,). The lamination plates (,) with the different number of laminations may be bonded according to a noise generating element.

Noise reducer for construction equipment

Breakthrough buffer for presses and control method therefor

A press machine having side frames which are effectively reinforced so as to appreciably reduce the noise generated during operation of the machine and improve the working accuracy of the machine without installing any special device on the outside thereof, significantly increasing the weight of the entire press machine, or obstructing a space between the side frames of the press machine. The side frames of the press machine are C-shaped in side view and are reinforced by at least one reinforcing member fixedly secured to each of the side frames at at least one predetermined place. The reinforcing members function to suppress the deformation of the opening of the C-shaped side frames to reduce noise and improve accuracy. The reinforcing members convert the vibrational energy of the side frames into heat energy which is then absorbed into the side frames.

Press machine having reinforced side frames

A press machine having side frames which are effectively reinforced so as to appreciably reduce the noise generated during operation of the machine and improve the working accuracy of the machine without installing any special device on the outside thereof or significantly increasing the weight of the entire press machine. The side frames of the press machine which are C-shaped in side view, are reinforced by at least one reinforcing member fixedly secured to each of the side frames at at least one predetermined place. The reinforcing members function to suppress the deformation of the opening of the C-shaped side frames to reduce noise and improve accuracy.

Growing community of inventors

Hiratsuka, Japan

Kenji Nishikawa