| 摘要 |
PCT No. PCT/SE88/00020 Sec. 371 Date Jun. 28, 1989 Sec. 102(e) Date Jun. 28, 1989 PCT Filed Jan. 22, 1988 PCT Pub. No. WO88/05847 PCT Pub. Date Aug. 11, 1988.A coupling means for detachably coupling a working implement to the operating arm of an excavating machine, said implement having an upper surface facing the operating arm, said coupling means comprising a first attachment member which is rigidly mounted to the upper surface of the implement and comprises a coupling element, and a second attachment member supported by the operating arm stick and operating cylinder via horizontal, parallel shafts and comprising a coupling element consisting of two locking parts arranged movable in relation to each other to be brought into locking engagement with the coupling element of the first attachment member by means of a power-generating means, said coupling elements having cooperating engagement surfaces which when the attachment members are connected together, are located in a common reference plane which is perpendicular to a common central plane for a stick and operating cylinder. In accordance with the invention all engagement surfaces of the two coupling elements have a circle arc-shaped extension in said reference plane and have the same radius.
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