Invention Publication

  • Patent Title: WORK MACHINE
  • Application No.: EP20905996.3
    Application Date: 2020-12-24
  • Publication No.: EP4083334A1
    Publication Date: 2022-11-02
  • Inventor: HORII, Hiroshi
  • Applicant: KUBOTA CORPORATION
  • Applicant Address: JP Osaka-shi, Osaka 5568601 1-2-47, Shikitsuhigashi, Naniwa-ku,
  • Agency: Cabinet Beau de Loménie
  • Priority: JP2019238288 20191227
  • International Announcement: WO2021132431 20210701
  • Main IPC: E02F3/43
  • IPC: E02F3/43
WORK MACHINE
Abstract:
A working machine (1) capable of bringing a distal end portion of a working tool into the vicinity of or into contact with a blade (7A) of a dozer (7) is provided.
A working machine includes a machine body (2), a dozer (7), a boom (31), an arm (41), a working tool (51), a boom cylinder (32), and an arm cylinder (42). The working machine also includes an arm crowd restricting unit (64) and a crowd restriction releasing unit (65). The arm crowd restricting unit (64) imposes a restriction on a stroke (S1) of the arm cylinder (42) in an arm crowd direction (D1) so that a swing track (M3) of a distal end portion of the working tool is spaced from the boom cylinder (32). The crowd restriction releasing unit (65) releases the restriction on the stroke (S1) of the arm cylinder (42) to enable the arm (41) to swing to an end of a swing range in the arm crowd direction (D1) when the boom (31) is at a swing position at which the working tool (51) in an operating position close to a working-tool dump position (Y2) is disposed in a vicinity of a blade (7A).
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