公开(公告)号：US10361605B2

公开(公告)日：2019-07-23

申请号：US14344524

申请日：2012-09-10

申请人： Andreas Eriksson ,  Anders Lobell ,  Per Nahnfeldt ,  Gunnar Styrud

发明人： Andreas Eriksson ,  Anders Lobell ,  Per Nahnfeldt ,  Gunnar Styrud

IPC分类号： H02K7/08 ,  B23P15/00 ,  F16C32/06 ,  F16C41/00 ,  H02K7/09 ,  F16C39/02 ,  F16C17/14 ,  F16C17/20 ,  B63H23/32 ,  H02K7/102 ,  H02K13/02 ,  H02K17/22 ,  B63B43/18 ,  B63H5/125

摘要： A method and a device for protecting an electric motor in a pod unit for propulsion of marine vessels against shaft bending shocks when the blades of the pod propeller hit ice blocks or other hard objects, said motor having a drive shaft, a rotor and a stator, said shocks tending to momentarily bend the drive shaft (3) to such an extent that the rotor (41) will come into contact with the stator. The rotor is prevented from coming in detrimental contact with the stator by providing at least two members, which together form a radial plain bearing having mating arcuate bearing surfaces, which during normal operation of the motor are spaced from one another by a gap and come in contact with one another only at extreme loads with short durations.