FIELD: machine building.
SUBSTANCE: main line coupling has receiving part and fixing device for fixing the insert part. Fixing device has the retaining part rigidly installed in the receiving space of receiving part and provided with rotary retaining flaps for enveloping the end collar made on insert part and attached to the retaining part with possibility of being offset, fixing part which together with receiving part has the fixing device which prevents the movement of fixing part from extended position to the inserted position if the insert part is in appropriate position.
EFFECT: invention is easy-to-manufacture and ensures the reliability of fixing the insert part in the receiving part.
23 cl, 10 dwg
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