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US 9,682,844 B2Granted
Chain drive unit
AssigneeGaraventa Liftech AG
InventorHans-Martin Conrad
Life of this patent
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AssigneeGaraventa Liftech AG
InventorHans-Martin Conrad
Estimating the term…
A chain drive unit (4, 5, 6) for reducing chain vibrations comprising a chain wheel unit (43) with at least two sprockets (431, 432) that are arranged parallel on a common rotation axle, at least two parallel chains (51, 52) engaging these sprockets (431, 432). At least one damping element (6) connecting two adjoining chains (51, 52). The circumferential orientation of two adjoining sprockets (431, 432) differs by a partial pitch (pP) and the damping element (6) comprises a first fixation (61) on its one free end for the lateral fixation to the first chain (51), a second fixation (62) on its opposite free end for the lateral fixation to the second chain (52) and a force transmission unit (63, 8, 9) arranged between the first and the second fixation transmitting an applied force from the first fixation (61) to the second fixation (62) and vice versa.
A chain drive unit for reducing chain vibrations comprising a chain wheel unit with at least two sprockets that are arranged parallel on a common rotation axle, at least two parallel chains engaging these sprockets, wherein at least one damping element connecting two adjoining chains and wherein the circumferential orientation of two adjoining sprockets differs by a partial pitch, and wherein the damping element comprises a first fixation on its one free end for the lateral fixation to the first chain, a second fixation on its opposite free end for the lateral fixation to the second chain and a force transmission unit arranged between the first and the second fixation transmitting an applied force from the first fixation to the second fixation and vice versa, wherein the first fixation comprises a first clip with two opposing clamping jaws for clamping an outer link plate of the first chain, wherein each of the two opposing clamping jaws of the first clip comprises a free end, wherein a hook is formed at each of these free ends and the second fixation comprises a second clip with two opposing clamping jaws for clamping an outer link plate of the second chain, wherein each of the two opposing clamping jaws of the second clip comprises a free end, wherein a hook is formed at each of these free ends, wherein the hooks of the first clip as well as the hooks of the second clip clench the respective outer link plate.
A damping element to be used in a chain drive unit, wherein the damping element comprises a first fixation on its one free end for the lateral fixation to the first chain, a second fixation on its opposite free end for the lateral fixation to the second chain and a force transmission unit arranged between the first and the second fixation transmitting an applied force from the first fixation to the second fixation and vice versa, wherein the first fixation comprises a first clip with two opposing clamping jaws for clamping an outer link plate of the first chain, wherein each of the two opposing clamping jaws of the first clip comprises a free end, wherein a hook is formed at each of these free ends and the second fixation comprises a second clip with two opposing clamping jaws for clamping an outer link plate of the second chain, wherein each of the two opposing clamping jaws of the second clip comprises a free end, wherein a hook is formed at each of these free ends, wherein the hooks of the first clip as well as the hooks of the second clip clench the respective outer link plate.
A method for reducing chain vibrations within a chain drive unit comprising:
Dependencies are inferred from the claim text.