Sliding type ball cage synchronous universal coupling

Abstract

A sliding type ball cage synchronous universal coupling comprises an inner sleeve, an outer sleeve, a retainer and steel balls. N raceways I are arranged on the outer surface of the inner sleeve, andthe part, between every two adjacent raceways I, of the outer surface of the inner sleeve consists of two sections of concentric spherical surfaces with different radii and the same circle center anda section of inner sleeve limiting surface. N raceways II are arranged on the inner surface of the outer sleeve. The retainer is arranged between the outer sleeve and the inner sleeve and is providedwith N windows, the windows correspond to the raceways I and the raceways II, the steel balls are arranged in the corresponding raceways I and raceways II, and the steel balls are axially limited by the retainer; the outer surface of the retainer consists of an outer spherical surface and a retainer outer limiting surface, and the inner surface of the retainer consists of two sections of cylindrical surfaces, an inner spherical surface and a retainer inner limiting surface; when the inner sleeve rotates to a limit angle relative to the outer sleeve, the retainer outer limiting surface of the retainer is attached to the inner surface of the outer sleeve, and the inner sleeve limiting surface of the inner sleeve is attached to the retainer inner limiting surface of the retainer. The slidingtype ball cage synchronous universal coupling has ingenious conception, and can realize double limiting of the retainer and the inner sleeve when rotating an angle.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a spherical cage synchronous universal joint. Background technique [0002] In industries such as metallurgy and automobiles, the application of couplings is ubiquitous. It has mechanical parts that firmly couple the driving and driven shafts in different mechanisms for rotation while transmitting motion and torque. [0003] Ball cage couplings have been optimized for nearly a hundred years from the early Rzeppa type structure with indexing rods to the currently widely used Birfield type and the sliding type ball cage coupling structure. Sliding ball cage synchronous universal coupling, the raceways on the inner and outer sleeves are straight grooves, while the torque is being transmitted, the outer sleeve and the inner sleeve can move relative to each other in the axial direction, eliminating the slippage in the transmission device of the coupling Spline vice. Since the axial relative move...

AI Technical Summary

Problems solved by technology

[0004] Usually, the rotation angle of sliding ball cage synchronous universal coupling is limited by the outer inclined surface of the cage, and the maximum allowable working angle is 20°. When the rotation reaches the limit angle, because the inner sleeve is not limited, there is still The tendency to continue to turn will cause the inner sleeve to seize, causing a blunt point when returning to position, affecting flexibility

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