The present invention provides a method of repairing a bearing bore defined by an inner surface of a bearing housing, for instance a bearing housing that is part of a wind turbine. The method includes applying a liquid resin to at least part of the inner surface of the bearing housing. The method includes mounting a bore insert in the bearing bore, where the bore insert includes an arcuate portion having an edge positioned along a line of required radius of the bearing bore, so that the liquid resin fills a gap between the inner surface of the bearing housing and the edge of the arcuate portion of the bore insert. The method includes removing the bore insert from the bearing bore after the liquid resin has solidified to repair the bearing bore to the required radius. Advantageously, the invention provides a relatively simple and inexpensive method for repairing a bearing bore that has suffered wear, that may be performed on-site and which obviates the need for potentially expensive component replacement of the bearing housing.

A rotor bearing housing for a wind turbine has: a bearing body for receiving a rotor shaft of the wind turbine, a support body arranged under the bearing body and configured to be coupled at a first end to a base element in order to transmit a force flow between the bearing body and the base element. The base element is arrangeable under the support body for the purposes of rotatable fastening to a first end of a tower of the wind turbine, the bearing body and the support body together forming a single-piece body, and the bearing body and the support body being configured such that, if a geometrical central point of the first receptacle for a rotor bearing is projected onto a cross-sectional plane of the first end of the tower, the geometrical central point is arranged outside a diameter of the tower at the first end.

The present disclosure relates to drive train assemblies for a wind turbine. These assemblies may comprise a rotor hub and a generator module. The generator module comprises a generator stator, and a stationary frame for supporting the generator stator. The generator further comprises a generator rotor, a shaft for supporting the generator rotor, and a bearing assembly for rotatably mounting the shaft on the stationary frame. The shaft is removably connected to the generator rotor, and the bearing assembly comprises a front bearing and a rear bearing. An upwind end of the generator module is attached to a downwind end of the rotor hub. The present disclosure further relates to wind turbines including such wind turbine assemblies and to methods for assembling drive train assemblies.

An apparatus and method for removing or installing a bearing unit at the downwind end of the bedplate in wind turbine uses a frame erected at the downwind end of the bedplate. The frame has cradle members located such that the bearing unit can be slid out of the bedplate and supported on the cradle members, or supported on the cradle members and pushed into the bedplate.

A drive arrangement for a wind turbine includes a main shaft, a housing, and a nacelle-mounted support structure. The main shaft of the drive arrangement for the wind turbine is completely supported in the housing. The housing of the drive arrangement for the wind turbine is at least partially resiliently mounted in the support structure.

A generator for a direct driven wind turbine configured to convert kinetic energy of a main shaft of the wind turbine into electrical energy. The generator includes a generator rotor connectable to the main shaft of the wind turbine and a generator stator, the generator includes a generator housing on which the generator stator is arranged. The generator housing includes a front side facing towards a rotor head of the wind turbine in an installed state of the generator and a rear side facing away from the rotor head in the installed state of the generator. The generator includes at least one front generator bearing arranged at the front of the generator housing and a rear generator bearing arranged at the rear of the generator housing.

A support apparatus for a shaft system. The shaft system comprises a first shaft (1), a second shaft (2), and a bearing (3) arranged between the first shaft (1) and the second shaft (2); the first shaft (1) is sleeved at an outer peripheral side of the second shaft (2) and is able to rotate relative to the second shaft (2) by means of the bearing (3). The support apparatus is used for arranging at a first end in an axial direction of the shaft system, and the support apparatus comprises: shaft end support members (8, 15), at least a portion of the shaft end support members (8, 15) being rotatably supported in an axial direction at an outer side of a shaft end face of a first end of the second shaft (2); and connection assemblies (17, 14), where the connection assemblies (17, 14) in the axial direction of the shaft system are used for being connected between a first end of the first shaft (1) and the shaft end support members (8, 15). Further disclosed is a wind turbine. The present support apparatus may enable a bearing of a shaft system to essentially not bear a load or reduce an axial load borne, and the service life of the bearing is prolonged.

An apparatus and method for removing or installing a bearing unit at the downwind end of the bedplate in wind turbine uses a frame erected at the downwind end of the bedplate. The frame has cradle members located such that the bearing unit can be slid out of the bedplate and supported on the cradle members, or supported on the cradle members and pushed into the bedplate.

In accordance with a method for assembling a rotor bearing arrangement of a wind turbine, individual slide bearing pads are inserted in the bearing block. The bearing block fitted with the slide bearing pads is then joined to a rotor block. During the joining of the rotor shaft and of the bearing block fitted with the slide bearing pads, the rotor shaft may be installed on a rotor shaft support so as to be vertically upright. A rotor shaft flange of the rotor shaft may rest on the rotor shaft support. The bearing block fitted with the slide bearing pads may be placed upon the rotor shaft vertically from above.

The present invention provides a method of repairing a bearing bore defined by an inner surface of a bearing housing, for instance a bearing housing that is part of a wind turbine. The method includes applying a liquid resin to at least part of the inner surface of the bearing housing. The method includes mounting a bore insert in the bearing bore, where the bore insert includes an arcuate portion having an edge positioned along a line of required radius of the bearing bore, so that the liquid resin fills a gap between the inner surface of the bearing housing and the edge of the arcuate portion of the bore insert. The method includes removing the bore insert from the bearing bore after the liquid resin has solidified to repair the bearing bore to the required radius. Advantageously, the invention provides a relatively simple and inexpensive method for repairing a bearing bore that has suffered wear, that may be performed on-site and which obviates the need for potentially expensive component replacement of the bearing housing.