FIELD: transport engineering; agricultural engineering. SUBSTANCE: device has rod 4 with fork installed in support on trailer pole 1, hollow cone 7 with union 7 held by fork above loop 2 and connected with trailer hydraulic main line. Pintle hook 10 and plate 11 are mounted on tractor. Hydraulic cylinder 12 and lever 13 engaged with cylinder are hinge mounted on plate 11. Cup 16 accommodating union 17 connected with tractor hydraulic system is mounted on lever. Free end of pintle hook is ball shaped, with fitted on cone 22 installed for engagement with hollow cone 6. EFFECT: improved reliability of coupling. 2 cl, 2 dwg
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