UPPER LOAD WITH CHANGEABLE LENGTH FOR COUPLING TRIANGLE OF CONNECTING AGRICULTURAL TOOLS AND TRACTOR Russian patent published in 1994 - IPC

FIELD: agricultural mechanical engineering. SUBSTANCE: upper load 5 has couple lug 13 provided with rod 15 which has thread. Both coupling members are mounted into threaded hole of sleeve 8. Threads 12 and 11 have opposite starts. To achieve detent position or a position when coupling hook 7 is decoupled relatively sleeve 8, lever 24 and detent are provided. The detent may move partially independently from lever 24. As spring-loaded detent may be displaced irrespective to lever 24 with decoupling position to detent position, the thread may not be under act of cramping forces. EFFECT: improved efficiency of operation. 6 cl, 4 dwg