EP1331403B1 - Steuereinrichtung für Statorschaufel - Google Patents

Steuereinrichtung für Statorschaufel Download PDF

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Publication number
EP1331403B1
EP1331403B1 EP03290059A EP03290059A EP1331403B1 EP 1331403 B1 EP1331403 B1 EP 1331403B1 EP 03290059 A EP03290059 A EP 03290059A EP 03290059 A EP03290059 A EP 03290059A EP 1331403 B1 EP1331403 B1 EP 1331403B1
Authority
EP
European Patent Office
Prior art keywords
link
pivot
face
clamping cap
lateral faces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03290059A
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English (en)
French (fr)
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EP1331403A1 (de
Inventor
Michel Bouru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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Filing date
Publication date
Application filed by SNECMA SAS filed Critical SNECMA SAS
Publication of EP1331403A1 publication Critical patent/EP1331403A1/de
Application granted granted Critical
Publication of EP1331403B1 publication Critical patent/EP1331403B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32008—Plural distinct articulation axes
    • Y10T403/32057—Angular and linear
    • Y10T403/32073—Pivot stud slidable in elongated opening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32114—Articulated members including static joint
    • Y10T403/32163—Articulate joint intermediate end joints
    • Y10T403/32172—Variable angle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/50—Bridged by diverse connector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/54—Flexible member is joint component

Definitions

  • the present invention relates to a blade control device variable pitch angle. As defined in the preamble of claim 1.
  • a blade control device is known from the document US-A-5,024,580 . It finds a particular application in the field of aeronautics, in particular for the control of the angular positions of air inlet guide vanes in turbomachine compressors, such as aircraft turbomachines.
  • Known devices for controlling variable pitch vanes in a turbomachine usually comprise a control member in the form of a ring surrounding a casing of the turbomachine and a plurality of levers or links, each link having a first end connected to the turbine engine. control ring by a hinge and a second end mounted on the pivot of a respective blade.
  • the synchronized modification of the angular position of the blades is made by rotation of the ring around the axis of the turbomachine.
  • the connection between each link and the ring comprises at least one degree of freedom in rotation about an axis directed substantially radially relative to the ring.
  • the link being rigidly mounted on the pivot of the corresponding blade, the rotation of the ring induces other relative movements between the ring and the portion of the rod mounted on the pivot of the blade.
  • connection in the form of a ball or a similar part which, in addition to the rotation around a substantially radial axis relative to the ring, allows rotation about an axis having a substantially circumferential direction relative to the ring. It has also been proposed to provide a link providing an additional degree of freedom in translation in a substantially radial direction relative to the ring.
  • the present invention therefore aims to overcome such drawbacks by providing a control device using fastening means of the link which can maintain without play it on the pivot of the blade.
  • An object of the invention is also to eliminate the drive imprecision.
  • variable pitch angle control device for a turbomachine compressor rectifier according to claim 1 is provided.
  • the clamping means comprise a clamping cap applied on the second end of the rod and subjected to an axial clamping force under the effect of the fastening means.
  • This clamping cap has a radial passageway which has at least one inner lateral face which is inclined with respect to a median longitudinal plane of this passage and which cooperates with a lateral face of the second end of the link to produce the clamping force .
  • the clamping cap exerts this pinching force through contact elements interposed between at least one inclined inner lateral face of the clamping cap and a corresponding lateral face of the second end of the link.
  • the contact elements may be either in the form of at least one flexible tongue protruding longitudinally on one side of a central block of the pivot, or at least one wedge interposed between the clamping cap and a side face of the second end of the link.
  • the second end of the link may have a U-shaped section with two wings applied against side surfaces of a central block of the pivot.
  • the fixing means may comprise a screw passing successively through a first orifice formed in the second end of the link, a second orifice formed in the clamping cap and a third orifice formed in the pivot of the blade.
  • the fixing means may be composed of a screw-nut system comprising a threaded rod integral with the blade pivot and on which is screwed an axial clamping nut.
  • the figure 1 represents, in a very partial manner, a part of a turbomachine, for example an airplane turbojet, provided with blades 2 with variable pitch angle. These vanes are, for example, guide vanes at the turbomachine compressor inlet, distributed around the axis of the turbomachine. On this figure 1 only one dawn is represented.
  • the control of the angular positions of the blades 2 is achieved by a control ring 4 surrounding a casing 6 of the turbomachine (shown only partially on the figure 1 ) and a plurality of rods 20.
  • Each rod 20 has a first end 20a connected to the control ring 4 by connecting means forming articulation.
  • this articulation is performed by an axis or finger 8 passing through the first end 20a of the rod 20 and engaged in a radial housing 10 of the control ring 4.
  • a second end 20b of the rod 20 is mounted on a pivot 30 of the blade 2 by means of fastening means 12.
  • These fastening means 12 conventionally comprise an attached screw 14 and a self-locking bushing (not shown) implanted in the pivot of the dawn. If the height of the pivot of the blade does not allow the installation of a self-locking bushing, one can also provide fastening means in the form of a screw-nut system (not shown) comprising a threaded rod secured to the pivot of the blade and on which is screwed an axial clamping nut.
  • clamping means which act transversely with respect to a median longitudinal plane P of the rod for locking in rotation without play the second end 20b of the rod 20 on the pivot of the blade.
  • These clamping means comprise a clamping cap 40 applied on the second end 20b of the rod 20 and on the pivot of the blade by the fastening means 12.
  • the end 20b of the rod and the pivot 30 of the dawn are transversely mutual support by lateral faces substantially parallel to the plane P.
  • the cap 40 has at least one inner lateral face inclined relative to the median longitudinal plane P of the rod which cooperates with a corresponding inclined face of the second end 20b of the rod or the pivot 30 or a contact element interposed between the end portion 20b of the link and the pivot 30. Under the effect of the axial clamping of the cap 40, the inclined faces cooperate with each other to produce the effort of transverse pinch of the end 20b of the rod on the pivot of the blade.
  • the pivot 30 of the blade of the control device comprises a rigid lateral portion 31 protruding longitudinally from an upper face 32 of the pivot 30 adjacent an edge thereof.
  • This rigid portion is made in one piece with the pivot 30, has an inner plane lateral face 31a substantially parallel to the plane P and a planar outer side face 31b which is inclined with respect to the plane P.
  • the internal flat lateral face 31a of the rigid part may also be slightly inclined relative to the plane P to allow better maintenance of the rod 20 on the pivot 30.
  • the second end 20b of the rod 20 has an orifice 21 in which the screw 14 (or a threaded rod secured to the pivot of the blade) engages with play and rests on the face 32 of the pivot 30.
  • This end 20b of the link has a first lateral face 22a which is substantially parallel to the longitudinal median plane P of the rod and which rests on the internal flat lateral face 31a of the rigid portion 31, and a second lateral face 22b which is inclined relative to on the plane P.
  • the clamping cap 40 has a substantially cylindrical portion 42 extended at its lower part by a flange 44. At its upper part, the cap 40 has an orifice 46 in which the screw 14 (or the threaded rod) engages.
  • a transverse passage 48 is formed in the cylindrical portion 42 of the cap for housing the second end 20b of the rod 20 and the rigid portion 31 of the pivot 30.
  • the passage 48 is bordered by two inclined lateral faces 48a, 48b having inclinations corresponding to those of the faces 22b, 31b and based thereon.
  • the screw 14 is inserted successively into the orifice 46 of the clamping cap, into the orifice 21 of the second end of the rod and into an orifice (not shown) formed axially in the pivot of the blade.
  • the threaded rod secured to the pivot of the blade also passes through the orifice 21 of the second end of the rod and the orifice 46 of the clamping cap.
  • the cap 40 has a substantially symmetrical shape exerting a symmetrical clamping force with the two inclined side faces 48a, 48b bordering the passage 48.
  • only the lateral face 48a can be inclined to cooperate with the face 22b of the second end 20b of the link, the other face 48b being parallel to the plane P, as well as the face 31b.
  • the pivot 30 of the blade of the control device further comprises, with respect to the first embodiment described above, a flexible lateral tab 33 protruding longitudinally from the upper face 32 of the pivot 30 and arranged substantially symmetrically at the rigid portion 31 relative to the median longitudinal plane P of the link.
  • This flexible tongue 33 is made in one piece with the pivot 30 and has an inner side face 33a substantially parallel to the plane P and an outer side face 33b inclined relative to the plane P.
  • the second end 20b of the rod 20 is supported on the upper face 32 of the pivot 30.
  • the first lateral face 22a of the end 20b of the rod is parallel to the plane P and bears on the inner lateral face 31a of the rigid part 31, and the second lateral face 22b of this same end 20b is also parallel to the plane P and rests on the internal lateral face 33a of the flexible tongue 33.
  • the screw 14 is introduced successively into the orifice 46 of the clamping cap, into the orifice 21 of the second end of the rod and into the orifice formed in the pivot of the blade.
  • the threaded rod integral with the pivot of the dawn crosses also the orifice 21 of the second end of the rod and the orifice 46 of the clamping cap.
  • the cap 40 has a transverse passage 48 formed in the cylindrical portion 42 of the cap with two inclined side faces 48a, 48b which have inclinations corresponding to those of the faces 33b, 31b and are based on those -this.
  • the inclined outer side face 33b of the flexible tongue 33 and the inclined side face 48a of the passage 48 of the clamping cap 40 have been shown planar. Of course, one can also imagine that these two faces are substantially conical. Similarly, the outer side face 31b of the rigid portion 31 and the inclined side face 48b of the passage 48 of the weaning cap 40 may also be substantially conical.
  • the pivot 30 of the blade of the control device has two slots 34a, 34b substantially parallel to the plane P and formed between a central block 35 of the pivot 30 and two thinned side portions 36a, 36b forming flexible tongues.
  • These thinned lateral portions each comprise an external lateral face, respectively 37a and 37b, inclined with respect to the median longitudinal plane P of the rod.
  • the second end 20b of the rod 20 is supported on the upper face 32 of the central block 35 of the pivot 30.
  • This end 20b has a U-shaped section with two wings 24a and 24b respectively engaged in the slots 34a, 34b of the pivot 30 of dawn.
  • the screw 14 is introduced successively into the orifice 46 of the clamping cap, into the orifice 21 of the second end of the rod and in the hole made in the pivot of the dawn.
  • the threaded rod secured to the pivot of the blade also passes through the orifice 21 of the second end of the rod and the orifice 46 of the clamping cap.
  • the two inclined lateral faces 48a, 48b of the passage 48 formed in its cylindrical portion 42 have inclinations corresponding to those of the inclined outer lateral faces 37a, 37b of the flexible tongues 36a, 36b and rest thereon.
  • the inclined lateral faces 48a, 48b of the cap 40 exert a bearing on the inclined lateral faces 37a, 37b of the flexible tongues. to obtain a transverse clamping force of the wings 24a, 24b of the second end 20b of the rod in the slots 34a, 34b of the pivot of the blade.
  • the flexibility of the flexible tongues 36a, 36b is thus used to exert by the clamping cap an indirect clamping force on the second end 20b of the rod 20.
  • the inclined lateral faces 37a, 37b of the flexible tongues make it possible to transmit this effort of clamping generated by the fastening means 12 symmetrically with respect to the plane P.
  • the rod 20 is locked in rotation without play on the pivot 30 of the blade.
  • the pivot 30 of the blade of the control device has a block 35 with two flat lateral faces 38a, 38b substantially parallel to the plane P and symmetrical with respect to this same plane P.
  • the second end 20b of the rod 20 bears on the upper face 32 of the block 35.
  • This end 20b has a U-shaped section with two wings 24a, 24b which rest on the corresponding flat lateral faces 38a, 38b of the pivot 30 of the dawn.
  • Wedges 50a, 50b are interposed between the inclined lateral faces 48a, 48b of the transverse passage 48 formed in the cylindrical portion 42 of the clamping cap 40 and the wings 24a, 24b of the second end 20b of the link.
  • These shims 50a, 50b comprise, in their upper part, first external lateral faces 51a, 51b inclined with respect to the plane P.
  • the screw 14 is introduced successively into the orifice 46 of the clamping cap, into the orifice 21 of the second end of the rod and in the hole made in the pivot of the dawn.
  • the threaded rod secured to the pivot of the blade also passes through the orifice 21 of the second end of the rod and the orifice 46 of the clamping cap.
  • the two inclined side faces 48a, 48b of the passage 48 formed in its cylindrical portion 42 have inclinations corresponding to those of the first inclined outer lateral faces 51a, 51b of the wedges 50a, 50b and bear thereon.
  • a transverse clamping force of the flanges 24a, 24b of the second end 20b of the link on the flat lateral faces 38a, 38b of the pivot 30 is exerted by supporting the inclined side faces 48a, 48b of the cap 40 on the wedges 50a, 50b.
  • the clamping cap 40 thus exerts an indirect clamping force on the second end 20b of the link 20 by bearing on the first outer lateral faces 51a, 51b of the wedges.
  • the rod 20 is locked in rotation without play on the pivot 30 of the blade.
  • the shims 50a, 50b advantageously have, in their lower part, second outer lateral faces 52a, 52b supported on corresponding faces of the pivot 30 of the blade.
  • These second outer lateral faces 52a, 52b are preferably inclined relative to the plane P and have inclinations of opposite angles to those of the first inclined external lateral faces 51a, 51b, for example symmetrical thereof with respect to a transverse plane median of the holds 50a, 50b.
  • the inclined side faces 52a, 52b bear on corresponding inclined faces formed in grooves 39a, 39b which border the central block 35 of the pivot.
  • the shims 50a, 50b are maintained by means of which the gripping force of the clamping cap is exerted in a direction substantially normal to the flat lateral faces 38a, 38b of the pivot of the blade and at a height which depends on the design of shims 50a, 50b (angle value of their inclined faces, choice of their positioning in the assembly Vietnamese).
  • the first outer lateral face 51a, 51b of each of the two wedges 50a, 50b is of substantially curvilinear section.
  • the wings 24a, 24b are folded at their ends to form flanges 25a, 25b housed in grooves 39'a, 39'b which border the central block 35 of the pivot. This arrangement contributes to the immobilization without play of the rod 20 on the pivot 30.
  • the pivot 30 of the blade of the control device also has a central block 35 with two flat lateral faces 38a, 38b substantially parallel to the plane P and symmetrical with respect to the same plane P.
  • the second end 20b of the rod 20 is supported on the upper face 32 of the block 35 of the pivot 30.
  • This end 20b has a U-shaped section with two wings 24a, 24b which rest on the flat lateral faces 38a, 38b.
  • Ribs 26a, 26b are integrally formed with wings 24a, 24b on the outer faces thereof. These ribs 26a, 26b have external lateral faces 27a, 27b inclined relative to the plane P.
  • the screw 14 is introduced successively into the orifice 46 of the clamping cap, into the orifice 21 of the second end of the rod and into the orifice formed in the pivot of the blade.
  • the threaded rod secured to the pivot of the blade also passes through the orifice 21 of the second end of the rod and the orifice 46 of the clamping cap.
  • the inclined side faces 48a, 48b of the passage 48 formed in the cap 40 have inclinations corresponding to those of the outer lateral faces 27a, 27b of the ribs 26a, 26b.
  • a transverse clamping force of the wings 24a, 24b of the second end 20b of the link is exerted on the faces.
  • lateral planar 38a, 38b of the pivot 30 by supporting the inclined side faces 48a, 48b of the clamping cap 40 on the side faces 27a, 27b of the ribs 26a, 26b.
  • the clamping cap 40 thus exerts a direct clamping force on the second end 20b of the rod 20 by bearing on the outer lateral faces of the ribs 26a, 26b.
  • the second end 20b of the rod 20 is locked in rotation without play on the pivot 30 of the blade.
  • the clamping cap 40 has a substantially cylindrical portion 42.
  • this cylindrical portion can for example be replaced by a substantially rectangular portion, the clamping means acting in this case identically.
  • the control device may comprise a bushing 60 disposed around the pivot 30 of the blade, between the clamping cap 40 and the flange 62 of an opening of the casing 6 of the turbomachine in which the pivot 30 of the turbine engine 30 is mounted.
  • This bushing 60 is intended to allow a centering of the pivot of the blade in the opening of the housing.
  • the clamping cap 40 also bears at its periphery on the bushing 60.
  • a shim 64 for adjusting the clearance interposed between the clamping cap 40 and the bushing 60 can then advantageously be provided in order to take account of the a possible axial play between these parts.
  • an anti-friction washer 66 may be disposed between the flange 62 of the opening of the housing 6 and the base of the pivot 30 of the blade.
  • the length of the control rod may be greater than the usual standards. It is then necessary to provide an adjustment of the axial clearance (for example of the order of 0.10 mm) between the upper surface of the second end 20b of the link 20 on which the clamping cap 40 is applied and the latter .
  • this adjustment can be obtained by interposing between these two elements a complementary piece (not shown in the figures) acting as a spacer, possibly with effect. spring.
  • This spacer can for example be made by a circular part. The presence of such a spacer is however not necessary for the control devices described in the first and fifth embodiments of the invention.
  • asymmetry of the lateral faces 22a, 22b or wings 24a, 24b of the rod 20 with respect to its median plane P in order to provide a foolproofing between an edge. attack and a trailing edge of the link.
  • asymmetry of position illustrated for example by figures 3 and 5 it is meant that the distance D1 between one of the lateral faces 22a, 22b (or wings 24a, 24b) of the rod 20 and the median plane P is greater or smaller than the distance D2 between the other lateral face 22a, 22b (or wing 24a, 24b) and the median plane P.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Clamps And Clips (AREA)

Claims (18)

  1. Vorrichtung zur Steuerung einer Schaufel mit variablem Einstellwinkel für den Leitapparat eines Turbomaschinenverdichters, mit einem Schwingarm (20), Verbindungsmitteln (8, 10), die ein Gelenk zwischen einem ersten Ende (20a) des Schwingarms und einem Steuerring (4) bilden, Mitteln (12) zum Befestigen eines zweiten Endes (20b) des Schwingarms an einem Drehgelenk (30) einer zu steuernden Schaufel (2) sowie Klemmitteln (40), die quer zu einer Mittellängsebene (P) des Schwingarms wirken, um das zweite Ende des Schwingarms an dem Drehgelenk (30) spielfrei gegen ein Drehen festzulegen, wobei die Klemmittel eine Klemmkappe (40) aufweisen, die auf das zweite Ende (20b) des Schwingarms (20) aufgebracht und unter der Wirkung der Befestigungsmittel (12) einer axialen Klemmkraft unterworfen ist, wobei die Klemmkappe einen radialen Durchgang (48) mit wenigstens einer inneren Seitenfläche (48a, 48b) aufweist, die gegenüber einer Mittellängsebene (P) dieses Durchgangs (48) geneigt ist und die dazu bestimmt ist, mit einer entsprechenden geneigten Seitenfläche des zweiten Endes des Schwingarms zusammenzuwirken, dadurch gekennzeichnet, daß die Klemmkappe (40) durch Kontaktelemente (31, 33, 36a, 36b, 50a, 50b), die in dem radialen Durchgang (48) zwischen der Klemmkappe und dem zweiten Ende des Schwingarms eingefügt sind, eine Querklemmkraft auf die entsprechende Fläche des zweiten Endes (20b) des Schwingarms (20) ausübt.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der radiale Durchgang (48) der Klemmkappe (40) zwei geneigte innere Seitenflächen (48a, 48b) aufweist, die in bezug auf die Mittellängsebene (P) dieses Durchgangs symmetrisch sind.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Drehgelenk einen starren Teil (31) aufweist, der von einer Oberseite (32) des Drehgelenks, auf einer Seite dieser, in Längsrichtung vorspringt und der eine innere Seitenfläche (31 a) aufweist, an der eine erste Seitenfläche (22a) des zweiten Endes (20b) des Schwingarms (20) anliegt.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß eine geneigte Fläche (48a) der Klemmkappe (40) an einer zweiten geneigten Seitenfläche (22b) des zweiten Endes (20b) des Schwingarms (20) anliegt, die derjenigen (22a) gegenüberliegt, an der die innere Seitenfläche (31 a) des starren Teils (31) anliegt.
  5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Drehgelenk ferner eine flexible Zunge (33) aufweist, die von der Oberseite (32) des Drehgelenks (30) auf einer Seite, die derjenigen gegenüberliegt, an welcher der starre Teil (31) vorspringt, in Längsrichtung vorspringt, wobei die flexible Zunge eine innere Seitenfläche (33a) hat, die an einer zweiten Seitenfläche (22b) des zweiten Endes (20b) des Schwingarms (20) anliegt, die derjenigen (22a) gegenüberliegt, an der die innere Seitenfläche (31 a) des starren Teils (31) anliegt, sowie eine geneigte äußere Seitenfläche (33b) aufweist, an der eine geneigte Seitenfläche (48a) der Klemmkappe (40) anliegt.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die geneigte äußere Seitenfläche (33b) der flexiblen Zungen (33) und die geneigte Seitenfläche (48a) der Klemmkappe (40) eben sind.
  7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die geneigte äußere Seitenfläche (33b) der flexiblen Zunge (33) und die geneigte Seitenfläche (48a) der Klemmkappe (40) im wesentlichen konisch sind.
  8. Vorrichtung nach irgendeinem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Seitenflächen (22a, 22b) des zweiten Endes (20b) des Schwingarms (20) eine Positionsasymmetrie in bezug auf die Mittelebene (P) aufweisen.
  9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß:
    - das Drehgelenk (30) der Schaufel zwei Schlitze (34a, 34b) aufweist, die zwischen einem mittleren Block (35) des Drehgelenks und zwei verjüngten Seitenteilen (36a, 36b), die flexible Zungen bilden, welche in bezug auf die Mittellängsebene (P) des Schwingarms geneigte äußere Seitenflächen (37a, 37b) aufweisen, gebildet sind,
    - das zweite Ende (20b) des Schwingarms (20) eine Form mit U-förmigem Querschnitt mit zwei Schenkeln (24a, 24b) aufweist, die in die Schlitze (34a, 34b) des Drehgelenks eingesteckt sind, und
    - die geneigten Seitenflächen (48a, 48b) der Klemmkappe unter der Wirkung der Befestigungsmittel (12) eine Auflagekraft auf die geneigten Seitenflächen (37a, 37b) der flexiblen Zungen (36a, 36b) ausüben, um eine Querklemmkraft der Schenkel (24a, 24b) des zweiten Endes des Schwingarms in den Schlitzen (34a, 34b) des Drehgelenks der Schaufel zu erzeugen.
  10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß:
    - das zweite Ende (20b) des Schwingarms (20) eine Form mit U-förmigem Querschnitt mit zwei Schenkeln (24a, 24b) aufweist, die an ebenen Seitenflächen (38a, 38b) eines mittleren Blocks (35) des Drehgelenks der Schaufel anliegen,
    - Keile (50a, 50b) zwischen geneigten Seitenflächen (48a, 48b) der Klemmkappe und den Schenkeln (24a, 24b) des zweiten Endes des Schwingarms eingefügt sind,
    - die geneigten Seitenflächen (48a, 48b) der Klemmkappe unter der Wirkung der Befestigungsmittel (12) eine Auflagekraft auf erste äußere Seitenflächen (51a, 51b) entsprechender Neigung der Keile (50a, 50b) ausüben, um eine Querklemmkraft der Schenkel des zweiten Endes des Schwingarms an den ebenen Seitenflächen (38a, 38b) des Drehgelenks der Schaufel zu erzeugen.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Keile (50a, 50b) zweite geneigte äußere Seitenflächen (52a, 52b) aufweisen, deren Neigungen zu denjenigen der ersten äußeren Seitenflächen (51 a, 51b) entgegengesetzt sind und die an einer entsprechenden Fläche des Drehgelenks der Schaufel anliegen.
  12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die äußere Seitenfläche (51a, 51b) eines jeden der zwei Keile (50a, 50b) einen im wesentlichen gekrümmten Querschnitt hat.
  13. Vorrichtung nach irgendeinem der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß die Schenkel (24a, 24b) des zweiten Endes (20b) des Schwingarms (20) eine Positionsasymmetrie in bezug auf die Mittelebene (P) aufweisen.
  14. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß:
    - das zweite Ende (20b) des Schwingarms (20) eine Form mit U-förmigem Querschnitt mit zwei Schenkeln (24a, 24b) aufweist, die an ebenen Seitenflächen (38a, 38b) eines mittleren Blocks (35) des Drehgelenks (30) der Schaufel anliegen,
    - die zwei Schenkel (24a, 24b) des zweiten Endes des Schwingarms äußere Rippen (26a, 26b) aufweisen, und
    - die geneigten Seitenflächen (48a, 48b) der Klemmkappe unter der Wirkung der Befestigungsmittel (12) eine Auflagekraft auf äußere Seitenflächen (27a, 27b) entsprechender Neigung der Rippen (26a, 26b) ausüben, um eine Querklemmkraft der Schenkel (24a, 24b) des zweiten Endes des Schwingarms auf die ebenen Seitenflächen (38a, 38b) des Drehgelenks der Schaufel zu erzeugen.
  15. Vorrichtung nach irgendeinem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die Befestigungsmittel (12) eine Schraube (14) umfassen, welche eine in dem zweiten Ende (20b) des Schwingarms (20) ausgebildete erste Öffnung (21), eine in der Klemmkappe (40) ausgebildete zweite Öffnung (46) sowie eine in dem Drehgelenk (30) der Schaufel ausgebildete dritte Öffnung durchgreift.
  16. Vorrichtung nach irgendeinem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die Befestigungsmittel (12) eine mit dem Drehgelenk (30) der Schaufel fest verbundene Gewindestange umfassen, welche eine in dem zweiten Ende (20b) des Schwingarms ausgebildete erste Öffnung (21) und eine in der Klemmkappe (40) ausgebildete zweite Öffnung (46) durchgreift und auf der eine Spannmutter festgezogen ist.
  17. Turbomaschinenleitapparat mit wenigstens einer Vorrichtung zur Steuerung einer Schaufel mit variablem Einstellwinkel nach irgendeinem der Ansprüche 1 bis 16.
  18. Turbomaschine mit wenigstens einer Vorrichtung zur Steuerung einer Schaufel mit variablem Einstellwinkel nach irgendeinem der Ansprüche 1 bis 16.
EP03290059A 2002-01-29 2003-01-10 Steuereinrichtung für Statorschaufel Expired - Lifetime EP1331403B1 (de)

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FR0201023 2002-01-29
FR0201023A FR2835295B1 (fr) 2002-01-29 2002-01-29 Dispositif de commande d'aube a angle de calage variable a liaison par pincement pour redresseur de compresseur de turbomachine

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CA (1) CA2418230C (de)
DE (1) DE60319612T2 (de)
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FR (1) FR2835295B1 (de)
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RU2304234C2 (ru) 2007-08-10
JP2003227495A (ja) 2003-08-15
FR2835295A1 (fr) 2003-08-01
FR2835295B1 (fr) 2004-04-16
UA79581C2 (uk) 2007-07-10
ES2304494T3 (es) 2008-10-16
DE60319612T2 (de) 2009-04-02
CA2418230C (fr) 2011-05-17
US20030143067A1 (en) 2003-07-31
JP4050626B2 (ja) 2008-02-20
DE60319612D1 (de) 2008-04-24
CA2418230A1 (fr) 2003-07-29
US6802692B2 (en) 2004-10-12
EP1331403A1 (de) 2003-07-30

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