Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2021/235426
Kind Code:
A1
Abstract:
Provided is a work machine with which it is possible to turn an attachment while appropriately supporting a load acting on the attachment. The work machine has: a hydraulic cylinder attached to the front surface of an arm, the hydraulic cylinder extending and contracting; a first link rod extended along the back surface of the arm; and a second link rod turnably supported on the side surface of the arm by a first pin that extends in the width direction of a front working machine, one end of the second link rod projecting toward the back-surface side of the arm and the other end projecting toward the front-surface side of the arm, one end of the first link rod being turnably connected to the attachment, the one end of the second link rod being turnably connected to the other end of the first link rod by a second pin that extends in the width direction of the front working machine, and the other end of the second link rod being turnably connected to the tip of a cylinder rod of the hydraulic cylinder by a third pin that extends in the width direction of the front working machine.
Inventors:
KUMATA DAISUKE (JP)
Application Number:
PCT/JP2021/018759
Publication Date:
November 25, 2021
Filing Date:
May 18, 2021
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F3/38; E02F3/40; E04G23/08
Foreign References:
| JPS6190946U | 1986-06-13 | |||
| JP2016117989A | 2016-06-30 | |||
| JP2006257839A | 2006-09-28 | |||
| JP2000234346A | 2000-08-29 | |||
| KR20110008130U | 2011-08-18 | |||
| JP2020026782A | 2020-02-20 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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