Wheel disk assembly having simplified sealing-plate mounting

Abstract

A wheel disk assembly, having a wheel disk, a plurality of blade devices, which are fastened along the outer circumference of the wheel disk, and a plurality of sealing plates, which are retained in two annular grooves radially spaced apart from each other. A first annular groove is in the wheel disk and a second annular groove is formed by the blade devices in a segmented manner. Simplified mounting of the sealing plates is achieved in that the first annular groove is expanded by an axially extending recess.

1 . A wheel disk assembly comprising:
 a wheel disk which has a blade-locating region and at least one annular projection spaced apart in the axial direction and at least one annular slot which is arranged between the blade-locating section and the annular projection, and with a plurality of blade devices which blade devices are fastened on the blade-locating section in a circumferentially distributed manner, and with a plurality of sealing plates which sealing plates, by the edge region pointing toward the disk axis, are fixed in the annular slot in the axial direction, and   a recess which recess extends from the annular slot in the axial direction into the blade-locating section and/or into the annular projection and the length of which in the circumferential direction corresponds at least to the length of the edge region of the sealing plates.   
     
     
         2 . The wheel disk assembly as claimed in  claim 1 ,
 wherein the recess furthermore extends from the annular slot pointing toward the disk axis.   
     
     
         3 . The wheel disk assembly as claimed in  claim 1 ,
 wherein the annular projection has a bevel sloping toward the recess.   
     
     
         4 . The wheel disk assembly as claimed in  claim 1 ,
 wherein the annular projection has a cavity which opens toward the recess.   
     
     
         5 . The wheel disk assembly as claimed in  claim 1 ,
 wherein provision is made for two or more recesses which are arranged rotationally symmetrically to the disk axis.   
     
     
         6 . The wheel disk assembly as claimed in  claim 1 ,
 wherein the blade-locating section and/or the annular projection have/has a retaining projection which is arranged radially outside the annular slot, extends axially to the sealing plate, and has a retaining surface pointing toward the annular slot, and in that the sealing plate on at least one side has a projecting support projection having a radially outwardly pointing support surface, wherein the support surface, at least in the event of a centrifugal force acting upon the sealing plate, butts against the retaining surface.   
     
     
         7 . The wheel disk assembly as claimed in  claim 1 , further comprising:
 a filler piece which is arranged in the recess, extends in sections in the circumferential direction and butts against the sealing plate.   
     
     
         8 . The wheel disk assembly as claimed in  claim 7 ,
 wherein a radially extending contact surface and/or an axially extending contact surface of the filler piece butts against the sealing plate.   
     
     
         9 . The wheel disk assembly as claimed in  claim 7 ,
 wherein the filler piece projects into the bevel and/or into the cavity.   
     
     
         10 . The wheel disk assembly as claimed in  claim 1 ,
 wherein the blade devices have in each case an annular slot segment which is open radially toward the disk axis, wherein the sealing plates are fixed in the axial direction on their outer circumference in the annular slot segments.   
     
     
         11 . The wheel disk assembly as claimed in  claim 1 ,
 wherein at least one sealing plate is secured in the circumferential direction by means of a circumferential displacement lock.   
     
     
         12 . The wheel disk assembly as claimed in  claim 11 ,
 wherein at least one sealing plate for securing in the circumferential direction has a hole and the wheel disk has an associated opening, wherein a connecting element engages in the opening through the hole.   
     
     
         13 . The wheel disk assembly as claimed in  claim 1 ,
 wherein all the sealing pates are secured in the circumferential direction by means of a circumferential displacement lock.   
     
     
         14 . The wheel disk assembly as claimed in  claim 13 ,
 wherein all the sealing plates for securing in the circumferential direction have a hole and the wheel disk has an associated opening, wherein a connecting element engages in the opening through the hole.