Title:
WORK MACHINE FOR MOTOR GRADER
Document Type and Number:
WIPO Patent Application WO/2019/207681
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 having an inner ring (32) which is disposed inside the outer ring (31) and which is connected to the outer ring (31) so as to be rotatable in a circumferential direction; and a circle (60) having a circle plate (61) which is affixed along the circumference thereof to the lower end of the inner ring (32), the circle (60) also having an outer peripheral side wall (62) which is connected to the outer peripheral side of the circle plate (61), has a circular cylindrical shape surrounding the bearing (30) from the outer peripheral side, and forms a clearance C between the outer peripheral side wall (62) and the lower surface of the draw bar plate (21), the circle (60) further having an inner peripheral side wall (63) which protrudes between the bearing (30) and the outer peripheral side wall (62) from the upper surface of the circle plate (61), extends in the circumferential direction, and faces the outer ring (31) from the outside in a radial direction.
Inventors:
YAMAGUCHI KOTA (JP)
ASAI YUJI (JP)
YONE TOSHIHIRO (JP)
ASAI YUJI (JP)
YONE TOSHIHIRO (JP)
Application Number:
PCT/JP2018/016802
Publication Date:
October 31, 2019
Filing Date:
April 25, 2018
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F3/76; E02F3/84
Foreign References:
| US20150135866A1 | 2015-05-21 | |||
| JPH04502805A | 1992-05-21 | |||
| JP2012080661A | 2012-04-19 | |||
| JP2013179882A | 2013-09-12 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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