| 摘要 |
The subject of the patent is a quick-change coupling for attaching work tools to an excavator boom, in which a respective coupling body part ( 1, 2 ) is disposed on the work tool and on the excavator boom, the two coupling body parts being mutually securable by a hook connection ( 3 ) and a wedge lock ( 4 ) having mutual bearing surfaces ( 5 ), and at least one coupling plate ( 14, 14 ') being respectively provided on the work tool, on both sides of the longitudinal center plane and parallel to the latter, which coupling plates have, congruent with each other, the receiving recesses both of the hook connection ( 3 ) and of the wedge connection ( 4 ).
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