QUICK COUPLING, ADAPTER AND QUICK COUPLING SYSTEM

摘要

The invention relates to a quick coupler (1) for a quick change system for changing attachments on a construction machine, comprising a carrier (13) which has first receptacles (9) on one side for receiving a first coupling element (5) and second receptacles on the other side (10) for receiving a second coupling element (6). According to the invention, additional positive locking elements (25) for positive engagement with corresponding counter elements (26) on the associated coupling element (5, 6) are arranged on at least one of the sides of the carrier (13) provided with the receptacles (9, 10). The invention also relates to an adapter suitable for the quick coupler and a quick change system with such a quick coupler and adapter.