초록 ▼

A device for balancing a rotating part, in particular a turbine rotor in a turbomachine such as a turbojet or the like, the device comprising at least one balance weight comprising engagement means for engaging it on an annular flange of the part, and locking means associated with the balance weight

A device for balancing a rotating part, in particular a turbine rotor in a turbomachine such as a turbojet or the like, the device comprising at least one balance weight comprising engagement means for engaging it on an annular flange of the part, and locking means associated with the balance weight and with the annular flange to prevent the balance weight from moving relative to the annular flange and to block itself against moving both in rotation and in axial translation relative to the balance weight.

대표청구항 ▼

What is claimed is: 1. A device for balancing a rotating part, in a turbomachine, the device comprising at least one balance weight mounted on an annular flange of the part, wherein the balance weight has at least one L-shaped hook engaging on an annular rim of said annular flange and for holding t

What is claimed is: 1. A device for balancing a rotating part, in a turbomachine, the device comprising at least one balance weight mounted on an annular flange of the part, wherein the balance weight has at least one L-shaped hook engaging on an annular rim of said annular flange and for holding the balance weight axially to the annular flange, and wherein the device further comprises locking means, said locking means cooperating with the balance weight and with the annular flange to prevent the balance weight from moving relative to the annular flange, and further cooperating with the balance weight to block itself against movement both in rotation and in axial translation relative to the balance weight. 2. A device according to claim 1, wherein, at its radially inner and outer ends, the balance weight has facing L-shaped hooks for engaging on two concentric annular rims of said annular flange. 3. A device according to claim 2, wherein at least one of the annular rims includes an interruption or notch enabling the balance weight to be put into place and engaged on the annular flange by movement in axial translation. 4. A device according to claim 1, wherein the locking means are fitted onto the balance weight and comprise a cylindrical peg for engaging axially in an orifice in the balance weight and in a corresponding orifice in the annular flange, together with means for preventing it the locking means from moving both axially and in rotation relative to the balance weight. 5. A device according to claim 4, wherein the means for preventing the locking means from moving in rotation comprise a deformable tongue for being engaged by being moved in a direction parallel to the axis of rotation of the part into a position between two adjacent abutments formed on the balance weight. 6. A device according to claim 5, wherein the locking means include a transverse flat head formed at one end of the peg and designed to bear against the balance weight and to become engaged by turning about the axis of the peg under a rim of the balance weight, in order to form said means for preventing the locking means from moving axially relative to the balance weight. 7. A device according to claim 6, wherein said the above mentioned tongue is formed by being cut out from the flat head of the cylindrical peg. 8. A device according to claim 5, wherein the flat head includes at least one tab adjacent to said tongue for co-operating with an L-shaped hook formed on the balance weight. 9. A device according to claim 8, wherein the balance weight is locked on the annular flange by turning the cylindrical peg about its own axis into a blocking position where the head of the peg is inserted under the rim of the balance weight, with the tongue then being engaged between the two adjacent abutments of the balance weight. 10. A device according to claim 9, wherein the peg of the locking means is mounted as a tight fit in the orifice of said annular flange and with clearance in the orifice in the balance weight. 11. A device according to claim 5, wherein the length of the tongue is sufficient to cause it said tongue to project beyond the abutments of the balance weight when said tongue is in the blocking position, so as to make it easier to dismantle the locking means by returning the tongue to its initial position. 12. A device according to claim 1, wherein the annular flange has a predetermined number of orifices for mounting a balance weight, said orifices being regularly distributed around the annular flange. 13. A device according to claim 1, the device being used for mounting at least one balance weight on an upstream annular flange of an upstream disk of a low-pressure turbine rotor in a turbojet, and/or for mounting at least one balance weight on a downstream annular flange of a downstream disk of said rotor. 14. A rotor disk comprising an annular flange carrying a device according to claim 1. 15. A rotor disk according to claim 14, wherein the annular flange comprises two concentric annular rims, at least one of said concentric annular rims including an interruption or notch enabling the balance weight of the device to be put into place and engaged on the annular flange by movement in axial translation. 16. A turbomachine comprising a device according to claim 1. 17. A device for balancing a rotating part in a turbomachine, the device comprising: a balance weight mounted on an annular flange of the rotating part; and a lock mechanism that cooperates with the balance weight and with the annular flange to prevent the balance weight from moving relative to the annular flange, and that further cooperates with the balance weight to block itself against movement both in rotation and in axial translation relative to the balance weight, wherein, at its radially inner and outer ends, the balance weight has facing L-shaped hooks engaging on two concentric annular rims of said annular flange. 18. A device according to claim 17, wherein at least one of the annular rims includes a notch configured such that the balance weight engages on the annular flange following a movement in axial translation.