Shaft coupling
AssigneeROLLS-ROYCE plc
InventorIstvan Bacskay
Life of this patent
Estimating the term…
Abstract
In a shaft coupling having a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which can be clamped together by means of clamping elements to form a split coupling sleeve provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2′) so that the first and second shaft members are aligned. The sleeve halves include retaining elements for positively locking the first shaft member (A1) against rotational movement relative to the coupling sleeve, wherein the retaining elements include a plurality of elongate force transmitting elements (16D) in the seat (14, 15)
Claims18
A shaft coupling comprising:
- a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which form, when they are joined together, a split coupling sleeve having an axis (C3) and provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2′) so that the first and second shaft members are centered on said axis of the coupling sleeve, said seat extending about said axis of the coupling sleeve,
- clamping elements (13) for holding the coupling sleeve halves (11, 12) together and clamping them about the first shaft member (A1), and
- a retaining device (16/A3) including interengaging retaining elements for positively locking the first shaft member against rotational movement relative to the coupling sleeve,
- characterised in that:
- the coupling sleeve halves (11, 12) include in said seat (14, 15) a plurality of elongate force transmitting elements (16D) which form said retaining elements and extend along a line including an angle (+a, −a) with a plane (L) perpendicular to said axis (C3) of the coupling sleeve and which are shaped so as to be interlockingly engageable with complemental force transmitting elements (A3D) on the first shaft member (A1), said force transmitting elements in said seat comprising a first group (16A) and a second group (16B) of said force transmitting elements (16D), said angle (+a, −a) in the first group being in a different direction from that in the second group, and
- wherein said first group and said second group of said force transmitting elements are spaced apart along said axis (C3) to create an annular gap free of any said force transmitting elements.
A shaft connection assembly comprising a first shaft member (A1), a second shaft member (A2, A2′) and a shaft coupling (10) for an axially and rotationally rigid interconnection of said first and second shaft members with the first and second shaft members aligned with one another, wherein said shaft coupling comprises:
- a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which form, when they are joined together, a split coupling sleeve having a mount or mounts (14, 11B, 12B) for the shaft members, said mount or mounts comprising at least one seat (14) for the first shaft member (A1), said seat extending about an axis of the coupling sleeve,
- clamping elements (13) for holding the coupling sleeve halves (11, 12) together and clamping them about the first shaft member (A1), and
- a retaining device (16/A3) including interengaging retaining elements for positively locking the first shaft member (A1) against rotational movement relative to the coupling sleeve,
- characterised in that:
- the coupling sleeve halves (11, 12) include in said seat (14, 15) a plurality of elongate force transmitting elements (16D) which form said retaining elements and extend along a line including an angle (+a, −a) with a plane (L) perpendicular to said axis (C3) of the coupling sleeve,
- at least one of said shaft members (A1) comprises force transmitting elements (A3D) which are complemental to said force transmitting elements (16D) in said seat (14) and adapted to be in interlocking engagement with said force transmitting elements (16D) in said seat (14), both said force transmitting elements in said seat (14) and said force transmitting elements on said one shaft member (A1) comprising a first group (16A, A3A) of said force transmitting elements and a second group (16B, A3B) of said force transmitting elements, and said angle (+a, −a) for said first group being in a different direction from that for said second group, and
- wherein said first group and said second group of said force transmitting elements are spaced apart along said axis (C3) to create an annular gap free of any said force transmitting elements.
A shaft connection assembly as claimed in 12, characterised in that within each of said groups (16A, 16B), the said angle (+a, −a) is the same absolute value for all force transmitting elements (16D).
A shaft coupling comprising:
- a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which form, when they are joined together, a split coupling sleeve having an axis (C3) and provided with at least one seat (14) for a first shaft member (A1) which is to be non-rotatably connected with a second shaft member (A2, A2′) so that the first and second shaft members are centered on said axis of the coupling sleeve, said seat extending about said axis of the coupling sleeve,
- clamping elements (13) for holding the coupling sleeve halves (11, 12) together and clamping them about the first shaft member (A1), and
- a retaining device (16/A3) including interengaging retaining elements for positively locking the first shaft member against rotational movement relative to the coupling sleeve,
- characterised in that:
- each of the coupling sleeve halves (11, 12) include in said seat (14, 15) a plurality of elongated force transmitting elements (16D) which form said retaining elements,
- wherein each of said retaining elements is formed along a single arc extending between opposite longitudinal edges of each of the coupling sleeve halves and have an angle (+a, −a) with a plane (L) perpendicular to said axis (C3) of the coupling sleeve and are shaped so as to be interlockingly engageable with complemental force transmitting elements (A3D) on the first shaft member (A1), said force transmitting elements in said seat comprising a first group (16A) and a second group (16B) of said force transmitting elements (16D), said angle (+a, −a) in the first group being in a different direction from that in the second group, and
- wherein said first group and said second group of said force transmitting elements are spaced apart along said axis (C3) to create an annular gap free of any said force transmitting elements.
Dependencies are inferred from the claim text.