Topy Kogyo Kabushiki Kaisha

Daisuke Nojo

Kiyokazu Niwa

Hiroyuki Takeno

Akihiro Koishi

Nobuyuki Suga

Weidong Xue

Yugo Takeuchi

Ryuhei Masuda

Seiji Nobata

Kenzo Uchida

The present invention addresses the issue of providing a heat treatment system and a heat treatment method whereby the inner circumference of a cylindrical workpiece can be reliably cooled regardless of the dimensions or shape of the workpiece and productivity can be improved, during quenching of the inner circumference of the cylindrical workpiece. The present invention has: rotating devicesthat rotate the cylindrical workpiece: holding membersthat hold the cylindrical workpieceat a prescribed position; a heating memberthat heats the cylindrical workpiecefrom the inner circumferential surface side; a cooling devicethat injects cooling fluid and cools the cylindrical workpiecefrom the outer circumferential surface side; and a injecting deviceprovided at a position separated from the cooling deviceand which inject the cooling fluid.

Heat treatment system and heat treatment method

A structure for standardizing at least one kind of part of an endless track so that parts can be used for the same size of construction vehicles of a plurality of construction vehicle makers, wherein (a) when the part is a link belt, each of a configuration and a dimension of each link, the pin and the bushing is unified over the same size of construction vehicles of a plurality of construction vehicle makers, and (b) when the part is a shoe including four coupling holes, each of a position, a configuration and a size of the four coupling holes is unified over the same size of construction vehicles of the plurality of construction vehicle makers.

Structure for standardizing parts of an endless track

Growing community of inventors

Tokyo, Japan

Daisuke Nojo