(19)
(11) EP 0 223 575 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.07.1987 Bulletin 1987/29

(43) Date of publication A2:
27.05.1987 Bulletin 1987/22

(21) Application number: 86308907

(22) Date of filing: 14.11.1986
(84) Designated Contracting States:
BE CH DE FR GB IT LI

(30) Priority: 16.11.1985 JP 25716785

(71) Applicant: ONODA CEMENT COMPANY, LTD.
 ()

(72) Inventors:
  • Tanaka, Kenichi c/o Chugoku Blasting Co. Ltd.
     ()
  • Kawakami, Hiromi
     ()

   


(54) Drilling apparatus


(57) Drilling apparatus (l) to be mounted as a replacement for the bucket of a self-propelled hydraulic shovel (30) comprises a drill (42) carried in a guide cell (9) mounted at the end of a boom (32a) of the self-propelled chassis, the guide cell being attached to the boom by a pivotable joint (7) and an actuator (ll) operatively connected between the guide cell and the boom to pivot the boom about an axis transverse to the general longitudinal axis of the boom; the pivot (8) of the pivotable joint is preferably offset from said general longitudinal axis and a rotatable joint (5) is attached between the pivotable joint and the boom, turning means (3) being operatively connected between the pivotable joint and the boom to rotate the guide cell about said general longitudinal axis.







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