Patent ID: 8702338
Filing Date: 2014-04-22
Classification: F02C,F03D,F05B,F05D,F16B,F16D,Y02E,Y10T

Abstract:
1. A wind turbine shaft connection, comprising: a first wind turbine shaft with a length in a longitudinal direction and a first shaft end with a radial extension, a second wind turbine shaft with a length in the longitudinal direction and a second shaft end with a radial extension, the first shaft and the second shaft each comprising an interconnection part and being inter-connectable by connecting the interconnection part of the first shaft and the interconnection part of the second shaft, and at least one longitudinal slot provided on an external surface of the second shaft, the longitudinal slot having a length in the longitudinal direction and a depth in a radial direction of the second shaft, and a shrinkable disk being positioned outwardly about the interconnection parts of the first and second shaft and on the external surface of the second shaft on which the at least one longitudinal slot is provided such that the shrinkable disk at least partially overlies the at least one longitudinal slot, the shrinkable disk being adapted to provide an inwardly directed force so as to lock the first shaft to the second shaft by providing pressure to the interconnection parts of the first and second shaft when the interconnection parts are interconnected, wherein the interconnection part of the first shaft comprises a plurality of friction surfaces for transferring moment between the first and second shafts by friction, and the interconnection part of the second shaft comprises a plurality of friction surfaces for transferring moment between the first and second shafts by friction, and hereby connecting the first shaft to the second shaft by shrinking the disk, and wherein the plurality of friction surfaces in the second shaft comprises at least one circumferential groove in the shaft end for insertion of the interconnection part of the first shaft, wherein an inner and an outer radius of the at least one circumferential groove in the shaft end are substantially the same as an inner and outer radius of a corresponding circumferential interconnection part in the first shaft.