Title:
WORK MACHINE FOR MOTOR GRADER
Document Type and Number:
WIPO Patent Application WO/2019/207688
Kind Code:
A1
Abstract:
This work machine for a motor grader is provided with: a draw bar (20) having a draw bar plate (21); a bearing (30) having an outer ring (31) which is affixed to the lower surface of the draw bar plate (21), and which has a plurality of lubricant supply holes (31b) extending in a radial direction and formed at positions separated from each other in a circumferential direction, the bearing (30) also having an inner ring (32) which is annular in plan view, is disposed inside the outer ring (31), and is connected to the outer ring (31) so as to be rotatable in the circumferential direction; a circle (60) having a circle plate (61) which is affixed along the circumference thereof to the lower end of the inner ring (32); a blade (90) supported by the circle (60); circumferential piping (44) extending along the outer peripheral surface of the outer ring (31) in the circumferential direction of the outer ring (31) and connected to the outer peripheral-side ends of the plurality of lubricant supply holes (31b); and a lubricant introduction opening (41) which is connected to the circumferential piping (44) and into which lubricating oil can be introduced from the outside.
Inventors:
YAMAGUCHI KOTA (JP)
ASAI YUJI (JP)
YONE TOSHIHIRO (JP)
ASAI YUJI (JP)
YONE TOSHIHIRO (JP)
Application Number:
PCT/JP2018/016816
Publication Date:
October 31, 2019
Filing Date:
April 25, 2018
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F3/76
Foreign References:
| US20150135866A1 | 2015-05-21 | |||
| JP2012202507A | 2012-10-22 | |||
| JP2004092842A | 2004-03-25 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
Download PDF: