EP3090135A2

EP3090135A2 - Wheel disk assembly and method for assembling a wheel disk assembly

Info

Publication number: EP3090135A2
Application number: EP15741879.9A
Authority: EP
Inventors: Sascha Dungs; Harald Hoell; Kevin KAMPKA; Karsten Kolk; Marc Lange; Peter Schröder; Vyacheslav Veitsman
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2014-04-29
Filing date: 2015-03-31
Publication date: 2016-11-09
Anticipated expiration: 2035-03-31
Also published as: EP3090135B1; EP2940249A1; CN106460531B; WO2015165678A3; US20170037736A1; CN106460531A; JP2017515038A; JP6286582B2; WO2015165678A2

Abstract

The invention relates to a wheel disk assembly (1; 14; 26), comprising a wheel disk (2; 15; 27), a plurality of blade devices (3; 16; 28), which are fastened along the outer circumference of the wheel disk (2; 15; 27), and a plurality of sealing plates (4; 17; 29), which are retained in two annular grooves (5, 6; 18, 19; 30, 31) radially spaced apart from each other, the first annular groove (5; 18; 30) being provided in the wheel disk (2; 15; 27) and being bounded axially outward by an annular projection (7; 20; 32), and the second annular groove (6; 19; 31) being defined by a plurality of annular-groove segments arranged adjacently, which are provided in the individual blade devices (3; 16; 28), characterized in that at least one opening (8; 21; 33) extending axially through the annular projection (7; 20; 32) is provided, the minimum width of which opening in the circumferential direction is greater than the width of the sealing plates (4; 17; 29) at the inside diameter such that a sealing plate (4; 17; 29) can be axially inserted between the annular grooves (5, 6; 19, 19; 30, 31) through the opening (8; 21; 33) and can be moved in the circumferential direction while guided by the annular grooves. The invention further relates to a method for assembling such a wheel disk assembly.

Description

description

Wheel disc assembly and method of assembling a wheel disc assembly

The present invention relates to a wheel disc assembly comprising a wheel disc, a plurality of vane means fixed along the outer periphery of the wheel disc, and a plurality of sealing plates held in two radially spaced apart annular grooves, the first annular groove being provided in the wheel disc and axially outward is bounded by an annular projection, and wherein the second annular groove is defined by a plurality of adjacently arranged Ringnutseg- elements, which are each provided in the individual blade ^¬ devices.

Radscheibenanordnungen of the aforementioned type are known in the art in a variety of configurations known. During assembly, the blade devices are inserted into grooves of the wheel disc, wherein successively, the sealing plates are inserted into the two annular grooves. In order to install the last two vane devices, all the sealing plates must already be mounted and moved so far beyond their overlapping areas in the annular grooves that the vane devices can be installed in the associated grooves of the wheel disc. Subsequently, the sealing plates are pushed in the circumferential direction back to its intended position and secured there against displacement suitable.

A disadvantage of the known wheel disc arrangements is that it is difficult to disassemble the sealing sheets in the event of servicing, since first of all two adjacent blade mechanisms have to be removed, which involves a considerable outlay in practice. Another wheel disc arrangement is disclosed in the document GB 905 582 A.

Based on this prior art, it is an object of the present invention to provide a Radscheibenanordnung of the aforementioned type, in which the sealing ^¬ plates easily disassemble and reassemble.

To achieve this object, the present invention provides a Radscheibenanordnung of the type mentioned, in which at least one axially extending through the annular projection extending recess is provided whose minimum width in the circumferential direction is greater than the width of the sealing plates on the inner diameter, so that a sealing plate axially can be inserted through the recess between the annular grooves and moved in the circumferential direction of these guided. Thanks to such a recess, the sealing plates can be threaded in a simple manner in the associated annular grooves, even if all the blade devices are already mounted on the wheel disc, whereby the assembly is made very flexible. Also, the individual sealing plates can be removed without any problems in the service case through the recess without much on ^¬ wall again. According to the invention, at least one closure piece is provided, which is designed to be detachably fastened to the wheel disk for closing the at least one recess. Such a closure piece ensures that the sealing plates arranged in the region of the recess can not move in the axial direction during operation.

According to one embodiment of the present invention, two recesses are provided, which are formed opposite one another in the wheel disc. By a circumferential offset of the recesses, in particular by 180 °, on the one hand, the assembly and disassembly of the sealing plates are facilitated ^¬ tert. In addition, the provision of a second recess arranged opposite the first recess compensates for a potential imbalance. Advantageously, at least one closure piece is provided which can be fastened detachably to the wheel disk for closing a recess. Such a closure piece ensures that the sealing plates arranged in the region of the recess can not move in the axial direction during operation.

The closure piece preferably has projections which, in the intended state, engage in correspondingly formed pockets of the recess. In this way, the closure piece is fixed in the intended state axially or radially in the recess. According to a variant of the present invention, the pockets extend axially through the entire annular projection and form undercuts in the radial direction. Accordingly, the closure piece can be inserted axially into the recess by inserting the projections into the associated pockets.

For the purpose of axial fixation of the closure piece at its ^¬ be ^proper position this can be caulked to the wheel disc, for example, by material of the closure piece is deformed in this adjacent to the recess provided recesses.

According to a further variant of the present invention, the bags starting from the side of the recess facing in the intended state of the first annular groove axially erstre ^¬ CKEN through a portion of the annular projection and form undercuts in the radial direction. A closure piece with correspondingly formed projections may then be inserted radially into the designated to the web first annular groove and then moved axially towards the annular ^combustion projection with introduction of the projections into the supplied arrange ^¬ ten pockets until the projections on the pockets walls bounding the Stop come. For axial fixation, according to the invention, a filler piece may be provided which, in the intended state, is arranged adjacent to the closure piece and defines a part of the groove base of the first ring groove. The filler is secured in the intended condition radially by a sealing plate and prevents axial movement of the Verschlussstü ^¬ ckes.

According to yet another variant of the present invention, the pockets extend radially through the annular projection and form undercuts in the axial direction, wherein the closure piece has a Füllstückabschnitt, which defines a part of the groove bottom of the first annular groove in ^¬ be befitting condition. A closure piece with correspondingly formed projections is then axially secured in the intended state by the projections received in the pockets and radially by a sealing plate which is arranged between the filler section and the second annular groove.

Furthermore, the present invention provides a method for mounting a wheel disc assembly according to the invention, in which in a first step, all blade devices are attached to the outer periphery of the wheel disc at their intended positions, and in a subsequent step, the sealing plates are mounted.

Further features and advantages of the present invention will become apparent from the following description of several embodiments of inventive wheel discs with reference to the accompanying drawings. That's it

Figure 1 is a perspective view of a Radscheibenan ^¬ order according to a first embodiment of the present invention in the fully assembled state; Figure 2 is a partial perspective view of a wheel disc of the wheel disc assembly illustrated in Figure 1, showing a portion of the wheel disc provided with a recess;

Figure 3 is a partial perspective view of the wheel disc assembly shown in Figure 1 in the partially assembled state; Figure 4 is a perspective view of a Verschlussstü ^¬ ckes of the wheel disc assembly shown in Figure 1, which serves to seal the recess shown in Figures 2 and 3; Figure 5 is a partial perspective view of the wheel disc assembly shown in Figure 1 in the assembled state;

FIG. 6 is an enlarged perspective view of FIG

Figure 5 shown wheel disc assembly in the closed with the closure piece recess;

Figure 7 is a perspective view of a Radscheibenan- order according to a second embodiment of the present invention in the assembled state;

Figure 8 is a partial perspective view of a wheel disc of the wheel disc assembly shown in Figure 7, showing a portion of the wheel disc provided with a recess;

Figure 9 is a partial perspective view of the wheel disc assembly shown in Figure 7 in the partially assembled state; Figure 10 is a perspective view of a Verschlussstü ^¬ ckes of the wheel disc assembly shown in Figure 7, which serves to seal the recess shown in Figures 8 and 9;

Figure 11 is a perspective view of a filler of the wheel disc assembly shown in Figure 7;

FIG. 12 shows a perspective partial view of FIG. 7

shown wheel assembly in the assembled state;

Figure 13 is a partially cut-away perspective view of the wheel disc assembly shown in Figure 7 in the assembled state, wherein the cut ^¬ plane extends through the recess;

14 is a perspective view of a Radscheibenan ^¬ order according to a third embodiment of the present invention in the assembled state;

Figure 15 is a partial perspective view of a wheel disc of the wheel disc assembly shown in Figure 14, showing a portion of the wheel disc provided with a recess;

Figure 16 is a partial perspective view of the wheel disc assembly shown in Figure 14 in the partially assembled state;

Figure 17 is a perspective view of a Verschlussstü ^¬ ckes of the wheel disc assembly shown in Figure 14, which serves to close the recess shown in Figures 15 and 16; Figure 18 is a partial cross-sectional view of the Darge ^¬ presented in Figure 14 Radscheibenanordnung a perspective view of the fully assembled state, and Figure 19 an alternative

Closure piece.

Figures 1 to 6 show a wheel disc assembly 1 according to a first embodiment of the present invention. The wheel disc assembly 1 comprises a wheel disc 2, a plurality of blade means 3 which are fixed along the outer periphery of the wheel disc 2, and a plurality of sealing plates 4, which are held between the wheel disc 2 and the blade means 3 in two radially spaced annular grooves 5 and 6. The first annular groove 5 is provided in the wheel disc 2 and is limited axially outwardly by an annular projection 7. The second annular groove 6 is defined by a plurality ^¬ plurality of adjacently disposed Ringnutsegmenten which are respectively formed in the blade means. 3

To facilitate the assembly of the sealing plates 4, the wheel disc 2 comprises at least one axially extending through the Ringvor ^¬ jump 7 recess 8 whose minimum width in the circumferential direction is greater than the width of the Dichtble ^¬ che 4 on the inner diameter. Accordingly, a sealing plate 4 can be inserted axially through the recess 8 between the annular grooves 5 and 6 and guided in the circumferential direction by these, as indicated by the arrows A and B in FIG. The recess 8 comprises two laterally angeord ^¬ designated pockets 9, which extend axially through the entire annular projection 7 and form undercuts in the radial direction. For closing the recess 8, the wheel disc assembly 1 further includes a closure piece 10 which can be releasably secured to the wheel disc. The closure piece 10 has projections 11, which protrude laterally and korres- ponding to the pockets 9 of the recess 8 are formed. Accordingly, the closure piece 10 can be inserted in the axial direction in the recess 8, wherein the projections 11 engage in the associated pockets 9, whereby a radial fixation of the received in the recess 8 closure piece 10 is achieved.

For axial fixation of the closure piece 10 at its intended position this can be caulked to the wheel disc 2 by the material of the closure member 10 is deformed under the action of force in this provided adjacent to the recess 8 recesses 12, as shown in Figure 6. For this purpose, recesses 13 are provided on the upper side of the closure piece 10 for receiving a stemming tool.

In order to assemble the wheel disc assembly 1 shown in FIG. 1, in a first step all blade devices 3 are fastened to the wheel disc 2 in a known manner. Subsequently, the individual sealing plates 4 are inserted in sequence axially through the recess 8 in the annular grooves 5 and 6 and then moved in the circumferential direction in their bestimmungsge ^¬ proper position. Those sealing plates 4 which are to be arranged in their intended position in the region of the recess 8 are positioned immediately adjacent to the recess 8. After inserting all sealing plates 4, the closure piece 10 is inserted axially into the recess 8 from ^¬ . Subsequently, a caulking tool is inserted into the recesses 13, whereupon closure piece material is deformed under the action of force in the recesses 12. Now the closure piece 10 is secured radially and axially to the wheel disc 2. In another

Step, the last sealing plates 4 are moved to their intended position, whereupon the individual sealing plates 4 are fixed by suitable means in their bestimmungsge ^¬ MAESSEN position to prevent accidental displacement in the circumferential direction. It should be clear that the wheel disc arrangement 1 can also have a plurality of recesses 8 with associated closure pieces 10. Thus, for example, two recesses 8 can be provided which are offset from one another by 180 ° in the wheel disc 2. In this way, on the one hand the assembly or disassembly of the sealing plates 4 can be simplified. On the other hand, imbalances can be eliminated.

Figures 7 to 13 show a wheel disc assembly 14 according to a second embodiment of the present invention. The wheel disc assembly 14 includes a wheel disc 15, meh ^¬ rere blade means 16 which are fixed along the outer periphery of the wheel disc 15, and a plurality of sealing plates 17 which are held between the wheel disc 15 and the blade means 16 in two radially spaced annular grooves 18 and 19. The first annular groove 18 is provided in the wheel disc 15 and is bounded axially outwardly by an annular projection 20. The second annular groove 19 is defined by a plurality of adjacently disposed annular groove segments formed respectively in the blade assemblies 16.

To facilitate the assembly of the sealing plates 17, the wheel disc 15 comprises at least one axially through the Ringvor ^¬ jump 20 extending recess 21 whose minimum width in the circumferential direction is greater than the width of the Dichtble ^¬ che 17 on the inner diameter. Accordingly, a sealing plate 17 can be axially inserted through the recess 21 between the annular grooves 18 and 19 and guided in the circumferential direction of these, as indicated in Figure 9 by the arrows A and B. Includes the recess 21, two laterally on ^¬ parent pockets 22, which, starting from that side of the recess, which is turned to-in the predetermined state of the groove, axially 20 he stretch ^¬ through a portion of the annular projection and forming in the radial direction undercuts. For closing the recess 21, the wheel disc assembly 14 further comprises a closure piece 23 which can be releasably secured to the wheel disc 15. The closure piece 23 has projections 24 which protrude laterally and are formed correspondingly to the pockets 22 of the recess 21. Accordingly, the closure piece 10 can be inserted radially into the first annular groove 18 and inserted in the axial direction in the recess 21, wherein the projections 24 engage in the associated pockets 22, whereby a radial fixation of the received in the recess 21 closure piece 23 is achieved.

For axial fixing of the closing piece 10 at its intended position, a filler piece is provided which is arranged adjacent in the predetermined state to the breech block, and defines a portion of the groove bottom of the first ring nut ^¬ 18th In the present case, the filler is circular-segment-shaped and has a rectangular cross-section.

In order to assemble the wheel disc arrangement 14 illustrated in FIG. 7, in a first step all the blade devices 16 are fastened to the wheel disc 15 in a known manner. Subsequently, the individual sealing plates 17 are inserted in sequence axially through the recess 21 in the annular grooves 18 and 19 and then moved in the circumferential direction in their bestimmungsge ^¬ proper position. Those sealing plates 17 which are to be arranged in their intended position in the region of the recess 21 are positioned directly adjacent to the recess 21. After insertion of the sealing plates 17, the closure piece 23 is inserted radially into the first annular groove 18 and then pushed axially into the recess 21. Subsequently, the filler is inserted radially into the first annular groove 18. In a further step, the last sealing plates are moved to their intended Posi ^¬ tion, whereupon the individual sealing plates 17 are fixed by suitable means in its intended position to prevent unintentional displacement in the circumferential direction prevent it. The closure piece 23 is now fixed radially and axially.

It should be understood that the wheel disc assembly 14 may also include a plurality of recesses 21 with associated closure pieces 23 and patches 25. Thus, for example, two recesses 21 may be provided which are offset from each other by 180 ° in the wheel disc 15 are formed. In this way, on the one hand, the assembly or disassembly of the sealing plates 17 can be simplified. Be eliminated for other Kings ^¬ nen imbalances.

FIGS. 14 to 18 show a wheel disc assembly 26 according to a third embodiment of the present invention. The wheel disc assembly 26 comprises a wheel disc 27, meh ^¬ rere blade means 28 which are fixed along the outer periphery of the wheel disc 27, and a plurality of sealing plates 29 which are held between the wheel disc 27 and the blade means 28 in two radially spaced annular grooves 30 and 31. The first annular groove 30 is provided in the wheel disc 27 and is bounded axially outwardly by an annular projection 32. The second annular groove 31 is defined by a plurality of adjacently disposed annular groove segments formed respectively in the blade assemblies 28.

To facilitate the assembly of the sealing plates 29, the wheel disc 27 comprises at least one axially extending through the Ringvor ^¬ jump 32 extending recess 33 whose minimum width in the circumferential direction is greater than the width of the Dichtble ^¬ che 29 at the inner diameter. Accordingly, a ^sealing sheet 29 can be axially inserted through the recess 33 between the annular grooves 30 and 31 and moved in the circumferential direction of these, as indicated in Figure 16 by the arrows A and B. The recess 33 comprises two laterally arranged pockets 34, which extend radially from the upper side of the annular projection 32 through the annular projection 32 and form undercuts in the axial direction. To close the recess 33, the wheel disc assembly 26 further includes a closure piece 35 which can be releasably secured to the wheel disc 27. The closure piece 35 has projections 36 which protrude laterally and are formed korres ^¬ pondierend to the pockets 34 of the recess 33. Accordingly, the closure piece 35 can be inserted in the radial direction in the recess 33, wherein the projections 36 engage in the associated pockets 34, whereby an axial fixation of the received in the recess 33 closure piece 35 is achieved. The closure piece 35 further has a Füllstückabschnitt 37, which defines a part of the groove bottom of the first annular groove 30 in the proper state ^¬ .

In order to assemble the wheel disc assembly 26 shown in FIG. 14, in a first step, all the blade devices 28 are fastened to the wheel disc 27 in a known manner. Subsequently, the individual sealing plates 29 are inserted in sequence axially through the recess 33 in the annular grooves 30 and 31 and then moved in the circumferential direction in its intended position. Those sealing plates 29 which are to be arranged in their intended position in the region of the recess 33 are positioned immediately adjacent to the recess 33. After insertion of all sealing plates 29, the closure piece 35 is inserted radially into the recess 33. Then the last sealing sheets are ver ^¬ pushed into its intended position, whereupon the individual sealing plates 29 are fixed using suitable means in its correct position to prevent unwanted displacement in the circumferential direction.

It should be understood that the wheel disc assembly 26 may also include a plurality of recesses 33 with associated shutters 35. Thus, for example, two recesses 33 may be provided which are offset from each other by 180 ° in the wheel disc 27 are formed. In this way On the one hand, the assembly or disassembly of the sealing plates 29 can be simplified. On the other hand, imbalances can be eliminated. FIG. 19 shows an alternative closure piece 38 which can be used on a ^{portion of} the closure piece 35 with a corresponding not shown recess. The only difference between the closure ^¬ pieces 38 and 35 is that the position of the projections 39 is not selected centrally as the projections 36 but lying inside.

Thanks to the recesses according to the invention, the sealing plates in the previously described embodiments can be threaded into the associated annular grooves in a rather simple manner, even if all the blade devices are already mounted on the wheel disc, whereby the assembly is made very flexible. Also, the individual can be

Sealing plates in service case through the recess easily remove again without much effort.

Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

Claims

claims

1. Radscheibenanordnung (1; 14; 26) having a wheel disc (2; 15; 27), a plurality of blade means (3; 16; 28) along the outer periphery of the wheel disc (2; 15; 27) be are ^¬ solidifies, and a plurality of sealing plates (4; 17; 29) held in two radially spaced annular grooves (5, 6; 18, 19; 30, 31),

the first annular groove (5; 18; 30) being provided in the wheel disc (2; 15; 27) and bounded axially outwardly by an annular projection (7; 20; 32), and

said second annular groove (6; 19; 31) being defined by a plurality of adjacently disposed annular groove segments provided respectively in said individual blade means (3; 16; 28)

at least one recess (8; 21; 33) extending axially through the annular projection (7; 20; 32) is provided whose minimum width in the circumferential direction is greater than the width of the sealing plates (4; 17; a sealing plate (4; 17; 29) can be inserted axially through the recess (8; 21; 33) between the annular grooves (5,6; 19,19; 30,31) and can be moved circumferentially thereof,

characterized in that

at least one closure piece (10; 23; 35; 38) is provided, which is designed to be detachably fastened to the wheel disc (2; 15; 27) for closing the at least one recess (8; 21; 33).

2. wheel disc arrangement (1; 14; 26) according to claim 1,

characterized in that

two recesses (8; 21; 33) are provided, which are formed opposite one another in the wheel disc (2; 15; 27).

3. Radscheibenanordnung (1; 14; 26) according to claim 1 or 2, characterized in that

the closure piece (10; 23; 35; 38) projections (11; 24; 36; 39) which in normal state in corrosion-respondierend formed pockets (9; 22; 34) of the Ausneh ^¬ mung (8; 21; 33 ) to grab.

4. wheel disc assembly (1) according to claim 3,

characterized in that

the pockets (9) axially through the entire annular projection

(7) extend and form undercuts in the radial direction.

5. wheel disc assembly (1) according to claim 4,

characterized in that

the closure piece (10) is caulked in the intended condition on the wheel disc (2).

6. wheel disc arrangement (14) according to claim 3,

characterized in that

the pockets, starting from that side of the recess (21) which faces the first annular groove (18) in the intended state, extend axially through a part of the annular projection (20) and form undercuts in the radial direction.

7. wheel disc assembly (14) according to claim 6,

characterized in that

a filling piece (25) is provided, which is arranged in the intended state adjacent to the closure piece (23) and defines a part of the groove bottom of the first annular groove (18).

8. wheel disc assembly (26) according to any one of the preceding claims,

characterized in that

the pockets (34) extend radially through the annular projection (32) and form undercuts in the axial direction,

wherein the closure piece (35; 38) has a filler section (37) which, in the intended state, defines a part of the groove bottom of the first annular groove (30).

9. Method for mounting a wheel disc arrangement (1; 14;

26) according to any one of the preceding claims,

in which, in a first step, all the vane devices (3; 16; 28) are fastened to the outer circumference of the wheel disc (2; 15; 27) at their intended positions, and in a subsequent step the sealing plates (4; 17; 29) are mounted ,