Asymmetrical mounting

An elastic machine or gearbox bearing for damping of bending moments and vibrations occurring between a rotary-gearbox unit and a bedplate of a wind turbine, the bearing defining an axis and comprising:

• an axially oriented elastomeric sandwich element (5) comprising a plurality of elastomeric layers that extend normally to the axis of the bearing;
• an elastomeric cone element (3) being installed with respect to the axis of the bearing either above or below the sandwich element (5) and defining an axis that is coaxial with the axis of the bearing and oriented perpendicular to the elastomeric layers of the sandwich element (5), and the cone element has a tapered end that is tapered inwardly toward the sandwich element (5);
• the cone element (3) and the sandwich element (5) being connected to one another by a cone piece (4), the cone piece has an axial end face and is centrally surrounded with respect to the axis of the bearing by the cone element (3), and a cylinder piece (4a) that is coaxially aligned with the axis of the bearing and which is centrally surrounded by the sandwich element (5), the cylinder piece having concentric radially inner and radially outer cylindrical surfaces and one axial end face of the cylinder piece abuts the axial end face of the cone piece,
• each of the cone element (3), the sandwich element (5), the cone piece (4) and the cylinder piece (4a) having a central hole, which are axially aligned and through which either a clamping bolt or a clamping screw (7) passes, the clamping bolt or the clamping screw passes completely through the central hole of the cone piece and is threadably secured within a threaded bore of an attachment flange for clamping a clamping flange (2) to the attachment flange, the clamping flange is supported axially between the elastomeric cone element (3) and the elastomeric sandwich element (5), the attachment flange (1) is installed axially below the cone element (3);
• and
• the cone element (3) has a greater stiffness, in a radial direction, than the sandwich element (5), and the sandwich element is independent of and axially spaced from the cone element, thereby a resulting total force acting on the bearing, acts in a region of the cone piece (4) with a widened cross section, and the bending moment no longer acts on the narrow cylinder piece (4a) and the clamping bolt or the clamping screw.