Comparative analysis of universal joint structures of unequal angular velocity

Presented is the overview of universal joint designs of unequal angular velocities, such as cutting the hinges with a hinge sleeve and a helical coil spring of wire of circular cross section, a cylindrical hinge with a helical spring made of wire, the cross section of which has the shape of a convex polygon, the hinge sleeves of material with high hardness, the hinge with a few bushes, hinge with folding case. The influence of the skew angle of the needle bearing rollers on the value of the contact stresses and the comparative analysis of universal joints structures on needle bearings for use in transport and technological systems has been studied. Patent search revealed a number of methods and devices aimed at solving the problem of failure of the bearing units on needle bearings. Considered are universal joints with a split bushing, universal joints twisted coil spring wire of circular cross section and twisted coil spring wire cross section which has the shape of a convex polygon, universal joints with sleeves of material with high hardness and a few bushes, universal joint cross folding case. The improved designs of universal joints of unequal angular velocities are suggested. Universal joint with replaceable spikes provides the possibility of replacing parts of the universal joint without disassembling the entire driveline and includes body crosses, in which there are spikes in the form of sleeves. Universal joint with a new seal allows to prevent foreign bodies in the work space of the universal joint and leakage of lubricant, improve the reliability of universal joints due to the sealing of the working chamber, sealing in the form of a corrugated tube frustoconical ending by the larger base coaxial washer L -shaped cross section, and from the smaller base ring in the shape of a torus, fixed in response toroidal groove formed in the body of the cross at the base of the spike.