Title:
DRILL DRIVING DEVICE FOR UNDERGROUND DRILLING DEVICE
Document Type and Number:
Japanese Patent JP2022090631
Kind Code:
A
Abstract:
To provide a drill driving device achieving good protection for drilling drive and an efficient drilling motion while using compaction tools in an axial direction.SOLUTION: The present invention relates to a drill driving device (10) for an underground drilling device having spindle alignment, wherein the spindle alignment has an inner spindle unit (20) and an outer spindle unit (40), and the outer spindle unit is supported on the inner spindle unit (20) in an axial displaceable state and floated between two spring means (50, 60). In accordance with the present invention, the first front side spring means (50) is arrayed in a drilling tool side and is provided with at least a combination of a compression coil spring and a first disk spring array (54), and the second rear spring means (60) faces a direction away from the drilling tool side and has a second disk spring array (64).SELECTED DRAWING: Figure 1
Inventors:
TOBIAS MOSCARITOLO
Application Number:
JP2021196034A
Publication Date:
June 17, 2022
Filing Date:
December 02, 2021
Export Citation:
Assignee:
EIRPDROLL GMBH
International Classes:
E21B6/00; B63B35/00
Domestic Patent References:
| JP2005133381A | 2005-05-26 | |||
| JP2005023551A | 2005-01-27 | |||
| JP2006219940A | 2006-08-24 | |||
| JPH1037645A | 1998-02-10 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office