Title:
EARTH AUGER DEVICE
Document Type and Number:
Japanese Patent JP2589228
Kind Code:
B2
Abstract:
PURPOSE: To prevent the scatter and adhesion of excavated earth to the circumference of a thrust device through a vertical hole in an earth auger device consisting of an earth auger, a driving device rotating the earth auger connected thereto, the thrust device providing thrust to the earth auger and a hydraulic cylinder coupling the driving device and the thrust device with each other, and passing through the vertical hole provided to the thrust device by the earth auger.
CONSTITUTION: Position and length are so set in a part of an earth auger 6 passing through a vertical hole 2b of a thrust device 2 that a driving device 7 is not fallen off from the vertical hole 2b even in the case it moves up and down. A blockading columnar body 6a having an outside diameter (d) slightly smaller than an inside diameter D of the vertical hole 2b is provided. The vertical hole 2b is blockaded by the blockading columnar body 6a, so that excavated earth is not seen around the thrust device.
Inventors:
MYATA KENICHI
Application Number:
JP8105691A
Publication Date:
March 12, 1997
Filing Date:
January 22, 1991
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
E02D17/13; E02F5/02; E21B12/06; E21B17/10; E21B17/22; (IPC1-7): E21B12/06; E21B17/22
Attorney, Agent or Firm:
Teruo Tomita