SAFETY CLUTCH WITH RADIALLY ARRANGED BOLTS AND RESILIENT ACTIVE RECESSES

The invention relates to a safety clutch with radially arranged bolts and resilient active recesses intended to transmit the moment of torsion and the rotation motion, in a single sense, between two consecutive coaxial elements of a linkage, and also to limit the moment of torsion so transmitted in case that overloads occur in operation. According to the invention, the clutch consists of a first semiclutch (1) mounted on a belt or chain pulley, a second semiclutch (2) mounted on a shaft, comprising some active recesses formed of some pairs of profiled leaf springs (3) having a resilient characteristic and an increased rigidity, mounted within some profiled grooves (a) provided in the central part of the second semiclutch (2) and some bolts (4) arranged, on the one hand, in some circular orifices of the first semiclutch (1) and, on the other hand, in the active recesses of the second semiclutch (2), where, during the unclutching process, the bolts (4) compress the leaf springs (3) passing between them, and in the fully clutched operation and in the unclutching process the first semiclutch (1) rests on the other semiclutch (2) by means of some bearings (5), the axial fastening of the two semiclutches (1 and 2) being achieved by some bearings (5) and some safety rings (6), while the axial fastening of the bolts (4) is carried out using a ring (7) mounted by means of some screws (8) on the external surface of the first semiclutch (1). Invenţia se referă la un cuplaj de siguranţă cu bolţuri dispuse radial şi locaşuri active elastice, destinat să transmită momentul de torsiune şi mişcarea de rotaţie într-un singur sens, între două elemente coaxiale consecutive ale unui lanţ cinematic, dar şi să limiteze momentul de torsiune transmis, în cazul apariţiei unor suprasarcini în funcţionare. Cuplajul conform invenţiei este format dintr-un prim semicuplaj (1) montat pe o roată dinţată, de curea sau de lanţ, dintr-un al doilea semicuplaj (2) montat pe un arbore, compus din nişte locaşuri active, formate din nişte perechi de arcuri (3) lamelare profilate, având o caracteristică elastică şi o rigiditate crescută, montate în nişte canale (a) profilate, prevăzute pe partea centrală a celui de-al doilea semicuplaj (2), şi nişte bolţuri (4) care se dispun pe de o parte în nişte orificii circulare din primul semicuplaj (1), iar pe de altă parte, în locaşurile active din cel de-al doilea semicuplaj (2), în procesul de decuplare, bolţurile (4) comprimă arcurile (3) lamelare, tre