FREE RUNNING CLUTCH Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: free running clutch has driving link 1 made of sprocket 2 race 3 fitted on shaft 4 and a driven link made of sleeve 5 positioned concentrically between sprocket 2 and race 3. Wall 6 of the sleeve is provided with torsional vibration damper 7 and coupled with driven shaft 8. Cylindrical surface 9 of the sleeve engages with wedge-shaped grooves 11 of sprocket 2 via rollers 10. Outer surface of the sleeve is provided with wedge- shaped grooves 12 wherein rollers are received. Double- arm levers 14 are pivotally connected to face of sprocket 2 for engaging with rollers 10 by their ones arms and with cone 15 secured to pressing bushing 16 provided with release bearing 17 by others. The pressing bushing is coupled to wall 6 for axial movement by sliding pairs 18. Spring 19 is interposed between cone 15 and sprocket 2 and spring 20 is interposed between sprocket 2 and double-arms 14. Shafts 4,8 are pivotally connected within case 21. Jaw 22 provided with grooves 23 can be coupled with sprocket 2. The clutch can be provided with jaw 24 secured to brake disk 25 for engaging with brake block 26 fixed to a rod of hydraulic cylinder 27. Wall 6 is provided with ports 28. The clutch can be provided with driving sleeve 5 and driven sprocket 2 and race 3 interconnected through wall 1 provided with ports 29. A mechanism for controlling operation of the clutch can be made of jaw 30 coupled to brake disk 25 and wall 1, which connects sprocket 2 and race 3, and shaft 8 is provided with ports 31 and torsional vibration damper 7. Springs 20 are interposed between wall 1 and jaw 30. EFFECT: enhanced reliability. 2 cl, 10 dwg