| 摘要 |
A rigid coupling, suitable for turbomachines, includes friction flanges for transferring torque from one shaft to another, bolts for axially coupling the friction flanges together, and shearing bushings which encompass these bolts and which prevent relative radial motion between the flanges. One-half of the outer sidewall surface of each such shearing bushing is cylindrical, while the other half of the outer sidewall surface is conical. The cylindrical half of each shearing bushing is larger than the bore which accommodates it in one of the flanges, and is inserted by means of a shrink fit. The conical half of the shearing bushing mates with a bore in the other flange which has the same conical shape. Each shearing bushing may also have grooves cut into its frontal surfaces to form collars which flex during use. Because the shearing bushings undergo lateral deformations during assembly, the need for great precision concerning the tolerances for the diameters and relative positions of the bores accommodating the shearing bushings is avoided. |
