公开(公告)号：US20140084668A1

公开(公告)日：2014-03-27

申请号：US14112793

申请日：2012-06-27

Applicant: Masanori Kobayashi ,  Kazuya Kokai ,  Yasuharu Hanaoka

Inventor： Masanori Kobayashi ,  Kazuya Kokai ,  Yasuharu Hanaoka

IPC: E21D9/11

CPC classification number: E21D9/112

Abstract: An excavation machine having a cutter head with a large diameter while making it possible to excavate excavation objects such as hard bedrock etc. with high efficiency is provided. The excavation machine comprises an outer circumference cutter head 20 having a circular opening and being rotated and contacted to excavation objects and a small diameter cutter head 23 disposed in the opening and rotatable independently from the outer circumference cutter head. Rotation centers of the rotation disk and the rotation plate are gapped and the gap is shorter than a rotation radius of the small diameter cutter head.

Abstract translation: 提供了具有大直径的切割头的挖掘机，同时能够高效率地挖掘诸如硬质基岩等挖掘对象。 挖掘机包括具有圆形开口并与挖掘物体旋转接触的外圆周切割头20和设置在开口中并与外周切割头独立旋转的小直径刀头23。 旋转盘和旋转板的旋转中心被间隙并且间隙比小直径刀头的旋转半径短。

公开(公告)号：US09140124B2

公开(公告)日：2015-09-22

申请号：US14112793

申请日：2012-06-27

Applicant: Masanori Kobayashi ,  Kazuya Kokai ,  Yasuharu Hanaoka

Inventor： Masanori Kobayashi ,  Kazuya Kokai ,  Yasuharu Hanaoka

IPC: E21D9/11 ,  E21D9/08

CPC classification number: E21D9/112

Abstract: An excavation machine having a cutter head with a large diameter while making it possible to excavate excavation objects such as hard bedrock etc. with high efficiency is provided. The excavation machine comprises an outer circumference cutter head 20 having a circular opening and being rotated and contacted to excavation objects and a small diameter cutter head 23 disposed in the opening and rotatable independently from the outer circumference cutter head. Rotation centers of the rotation disk and the rotation plate are gapped and the gap is shorter than a rotation radius of the small diameter cutter head.

Abstract translation: 提供了具有大直径的切割头的挖掘机，同时能够高效率地挖掘诸如硬质基岩等挖掘对象。 挖掘机包括具有圆形开口并与挖掘物体旋转接触的外圆周切割头20和设置在开口中并与外周切割头独立旋转的小直径刀头23。 旋转盘和旋转板的旋转中心被间隙并且间隙比小直径刀头的旋转半径短。