Shafting connection
AssigneeOvako Couplings AB
InventorsStaffan Sundberg, Vilaly E. Sergeev, Vladimir G. Nesterov
Life of this patent
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Abstract
A press fit joint shafting connection for hollow cylindrical steel shafts has shaft end faces provided with eccentrically arranged axial recesses wider than the main shaft bores. An annular toughened steel locking insert having an eccentrically arranged through bore is retained in the space formed by the eccentrically arranged bores when the shaft ends meet. The degree of eccentricity of the bore in the locking insert corresponds to that of the eccentrically arranged shaft recesses while the locking insert bore diameter corresponds to the diameter of the main shaft bores. The inner bores with free lumen are in alignment in a mounted state. A corresponding shafting method is also described.
Claims16
Shafting connection for connecting a first hollow cylindrical steel shaft to an aligned second hollow cylindrical steel shaft, said shafts having respective main bores and identical outer diameters at least in regions extending from their abutting ends, comprising a friction coupling including an inner sleeve with an inner cylindrical surface arranged for frictional contact with the outer surface of a terminal region of the shafts, said friction coupling being arranged to be fitted on the aligned shafts to cover both shafts near their abutting ends, each of said shafts in a region extending from their abutting ends having a second bore of same diameter for receiving an annular insert, said second bores being wider than the main shaft bores and being arranged with equal eccentricity in respect to the main shaft bores, said annular insert being an annular locking insert having substantial extension in both second bores and having an eccentrically arranged through bore having a bore diameter, the degree of eccentricity essentially corresponding to that of the eccentrically arranged bore in the respective shaft.
Dependencies are inferred from the claim text.