| 摘要 |
The invention relates to a rotary shaft arrangement carrying equipment at one end and extending rearwards from the equipment, the shaft ( 1 ) being supported by a first bearing ( 2 ) behind the equipment, and by a second bearing ( 3 ) behind the first bearing ( 2 ), the first bearing ( 2 ) being carried by a casing ( 4 ) surrounding the shaft ( 1 ) and extending rearwards from the first bearing ( 2 ) to a stator structure ( 5 ) to which the casing ( 4 ) is fastened by screws ( 6 ) that extend parallel to the shaft ( 1 ) and that are fusible in traction, the arrangement being characterized by the fact that the second bearing ( 3 ) is disposed with radial clearance (J) in a bore ( 7 ) of an annular support ( 8 ) secured to the stator structure ( 5 ), and is fastened to said annular support ( 8 ) by screws ( 9 ) that are parallel to the shaft ( 1 ) and that are fusible in shear, whereby the second bearing ( 3 ) can bear against said support ( 8 ) in the event of said screws ( 9 ) rupturing. The invention relates more particularly to the support for the fan shaft of a turbojet.
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