5 Degrees of Freedom Alignment-Correcting Preloaded Bearing Connection System

摘要

Exemplary embodiments provide a rotary misalignment-compensation bushing connection system that may be used in large-scale operations where several components are mounted in alignment on a single pin. For example, the misalignment-compensation system may be used in preloaded connection of a male lug rotatably mounted between a first lug and a second lug, on heavy equipment, for example, oil field exploration and production equipment. The misalignment-compensation system includes tapered cone bushings and surrounding counter-tapered cup bushings that expand in diameter and align the connection system as it is torqued together assembling the components to the pin.

主权项

1. A rotary misalignment-compensation bushing connection system for preloaded connection of a male lug rotatably mounted between a first lug and a second lug, the bushing connection system comprising:
a substantially cylindrical pin having opposed first and second ends, the pin configured to fit within an orifice in each of the first and second lugs and the male lug, such that the male lug rotates about the pin; a first axial threaded hole in the first end of the pin; a center spacer located substantially centered on the pin in a non-interfering fit; a pair of sleeve bearings, one each being located on the pin on each side of the center spacer; the sleeve bearings being located on the pin; an inner cone bushing located on each sleeve bearing in interference fit; an inner cup bushing located on each inner cone bushing; a pair of thrust bearings located on the pin, on an end of the bushing opposite to the center spacer; an outer cone bushing located on and surrounding the pin, the outer cone bushing adjacent to one of the thrust bearings; an outer cup bushing located on top of and surrounding the outer cone bushing; the center spacer being axially preloaded between the inner cup bushings; the thrust bearings being rotatable and axially preloaded against an outer cup bushing; a retainer cap having an internal side and an external side, and a connecting passage from the internal to the external side; the internal side having a compression boss engageable with the outer cone, and a relief receivable of the first end of the pin having the threaded hole; and, the external side configured to engage a fastening tool, and having a radial slot or bore receivable of a locking pin.