(19)
(11) EP 1 959 093 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.05.2011 Bulletin 2011/18

(43) Date of publication A2:
20.08.2008 Bulletin 2008/34

(21) Application number: 08250521.5

(22) Date of filing: 13.02.2008
(51) International Patent Classification (IPC): 
E21D 9/11(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 16.02.2007 JP 2007036154

(71) Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Kobe shi, Hyogo 650-8670 (JP)

(72) Inventors:
  • Kondo, Yasunori
    Kako-Gun Hyogo 675-0155 (JP)
  • Kishimoto, Koki
    Kako-Gun Hyogo 675-0155 (JP)

(74) Representative: Piésold, Alexander James 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Shield machine


(57) A shield machine according to the present invention includes: a body (1) having an oval cross section; a circular plate member (17) mounted on a front end-side portion of a shield machine main body (3); a first rotating mechanism (18) which rotates the circular plate member (17); a pair of pivot arms (19) which are rotatably supported by the circular plate member (17); a pair of second rotating mechanisms (20) which rotate the pair of pivot arms (19); a pair of head supporting members (19a) which are firmly fixed to tip end portions of the pivot arms (19); a pair of rotary cutter heads (4) which are rotatably mounted on the head supporting members (19a) and each of which has a diameter that is half a short diameter of the oval cross section of the body; and a pair of third rotating mechanisms (21) which rotate the rotary cutter heads (4) around third center axes.







Search report