EP3084269A1 - Fixation et/ou serrage d'un axe de satellite - Google Patents

Fixation et/ou serrage d'un axe de satellite

Info

Publication number
EP3084269A1
EP3084269A1 EP14801996.1A EP14801996A EP3084269A1 EP 3084269 A1 EP3084269 A1 EP 3084269A1 EP 14801996 A EP14801996 A EP 14801996A EP 3084269 A1 EP3084269 A1 EP 3084269A1
Authority
EP
European Patent Office
Prior art keywords
planetary
planet
pin
thread
planet carrier
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.)
Withdrawn
Application number
EP14801996.1A
Other languages
German (de)
English (en)
Inventor
Gerhard Diekhans
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.)
ZF Wind Power Antwerpen NV
ZF Friedrichshafen AG
Original Assignee
ZF Wind Power Antwerpen NV
ZF Friedrichshafen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZF Wind Power Antwerpen NV, ZF Friedrichshafen AG filed Critical ZF Wind Power Antwerpen NV
Publication of EP3084269A1 publication Critical patent/EP3084269A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/403—Transmission of power through the shape of the drive components
    • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H2057/085—Bearings for orbital gears

Definitions

  • the invention relates to the axial fixation and / or clamping of a planetary pin, in particular a planetary pin of the planetary gear of the transmission of a wind turbine.
  • the planet pins also called planetary shafts
  • the planet pins fulfill two main functions.
  • the planet pins serve as a bearing seat for the planetary gear bearings.
  • At least two bearings are usually used per planetary gear. These must be fixed in the axial direction. In particular, when using tapered roller bearings is beyond a clamping of the bearings, i. a preload acting on the bearings, desired in the axial direction to avoid damage and increase the life of the bearings.
  • the planet pins fix the two halves of a planet carrier against each other.
  • the planet pins thus have a stiffening and stabilizing effect on the planet carrier.
  • the planetary pins In order to fulfill the functions described, the planetary pins must enter into the strongest possible connection with the planet carrier. To this end, a press fit has proven to be suitable in which the planet carrier is shrunk onto the planet pins. First, the planet carrier is heated. In the heated planet carrier, the planet pins are introduced. If the planet carrier then cools down, it shrinks on the planet pins, so that an interference fit is formed between the planet carrier and the planet pins.
  • the interference fit between the planet carrier and the planet shaft can withstand greater loads, a stronger press fit with larger dimensional differences between the planetary pin and the planet carrier is provided.
  • this is associated with disadvantages. So it is necessary to heat the planet carrier stronger before mounting. This entails the danger that fitters will contract burns when they come into contact with the planetary carrier.
  • the higher dimensional differences increase the stresses in the shrunk- ten planet carriers. This is the resilience and durability of the planet carrier detrimental.
  • US 2006/0293142 A1 a clamping screw for the axial clamping of a planetary bolt.
  • the planetary pin has an axially extending, through bore through which the clamping screw can be inserted.
  • In the planet carrier is a thread into which the clamping screw can be screwed. The head of the clamping screw and the thread are then located on two axially opposite sides of the planetary bolt, so that the clamping screw can exert a force in the direction of the thread on the planet pins.
  • the clamping screw Since the clamping screw is guided in the longitudinal direction through the planet pins, so that the screw head and the thread are arranged in the axial direction opposite sides of the planetary bolt, the length of the clamping screw is determined by the geometry of the planetary pin. This means that only very long clamping screws can be used with a correspondingly low tensile rigidity. As a result, the clamping screw has a high compliance with loads in the axial direction. This has the consequence that an axial displacement of the planetary pin can not be effectively prevented.
  • the invention has for its object to fix a planetary pin, bypassing the known from the prior art solutions inherent disadvantages in the axial direction.
  • An inventive, in particular one-piece, planetary pin can be divided into two areas - a first area and a second area.
  • the first region of the planet pin is designed to receive planet bearings.
  • the first region of the planetary bolt can fix the planetary bearings in the axial direction.
  • the first region of the planetary bolt for the planetary bearings each have a bearing seat.
  • a bearing seat is preferably at least one cylindrical portion of the first portion of the planetary bolt, on which the inner ring of at least one of the planetary bearings can be postponed.
  • the entire first area of the planetary pin is cylindrical.
  • the planet bearings are used for the rotatable mounting of a planetary gear in the planet shaft.
  • the rotation of the planet gear takes place coaxially with the planet pins.
  • the invention is suitable for the axial fixing and / or clamping of tapered roller bearings.
  • the second region of the planetary pin has a shoulder for the axial fixation and / or bracing of the planetary bearings.
  • the shoulder forms a coaxial the annular pin extending annular surface which is aligned orthogonal to the axis of symmetry of the planetary pin or the axis of rotation of the planetary gear and the planetary bearings.
  • the planetary bearings are axially fixed and / or braced between the shoulder of the planetary pin and a contact surface of the planet carrier provided for this purpose. In this case, there is an axial fixation and / or tension of each individual planetary bearing and the planetary bearings with each other.
  • the shoulder is formed as a contact surface to an inner ring of a first of the planetary bearings.
  • the shoulder can exert a force on the inner ring in a first direction.
  • the inner ring of a second of the planetary bearings may preferably be directly, i. via a common contact surface with the planet carrier, or indirectly, i. via an intermediate element, come into contact with the planet carrier.
  • the planetary carrier can accordingly exert a force on the inner ring of the second of the planetary bearings in a second, opposite to the first direction extending direction.
  • means are preferably provided which enable a support of the outer ring of the first of the planetary bearings and the outer ring of the second of the planetary bearings against each other.
  • This may be, for example, an intermediate ring, steps in the planetary gear and / or more planet bearings.
  • a direct contact of the outer rings is possible.
  • the outer ring of the first of the planetary bearings can thus exert a force in the first direction on the outer ring of the second of the planetary bearings; the outer ring of the second of the planetary bearings can exert a force in the second direction on the outer ring of the first of the planetary bearings.
  • the planetary pin can be provided with at least one internal thread. This runs so that the second region of the planetary pin has an opening of the internal thread. Under the mouth is to understand a preferably circular opening of the planetary bolt, through which the internal thread is accessible. The internal thread is therefore an internal thread embedded in the second region of the planetary bolt. The aim is to position the internal thread such that the internal thread is accessible even in the assembled state of the planetary pin, ie when the planet pin is in a planetary carrier.
  • a first means described below for the axial fixation and / or clamping of the planetary pin should be screwed into the internal thread in the mounted state of the planetary pin.
  • the second region of the planetary bolt according to the invention may comprise at least one external thread.
  • the first means according to the invention for the axial fixation and / or clamping of the planetary pin described above according to the invention has at least one thread, which can be screwed to the internal thread or the external thread of the planetary bolt.
  • the thread of the agent is thus designed so that it can form a thread pairing with the internal thread or the external thread of the planetary bolt.
  • the thread pairing serves the necessary for the axial fixation and / or tension of the planetary bolt power line.
  • the shoulder of the planetary bolt is involved in the power line.
  • the internal thread and / or the external thread of the planetary bolt are located in the second region of the planetary bolt. Therefore, it is possible to arrange the shoulder of the planet pin and the internal thread and / or the external thread of the planet pin and thus the first means for axial fixation and / or clamping of the planet pin in close spatial proximity to each other. This leads to a short load path and thus to a high rigidity.
  • the first means for axial fixation and / or clamping of the planetary pin is designed such that it can be clamped against a safety or lamella ring when the safety or lamella ring is inserted into a groove in the planet carrier.
  • the planet carrier thus has a groove. This runs preferably coaxial with the planet pins in the mounted state in a through hole of the planet carrier, which is provided for fixing the planetary pin.
  • the first means for axially fixing and / or clamping the planetary pin preferably has a surface with which it can be supported against the securing or laminating ring.
  • the first means for axial fixation and / or clamping of the planetary pin can thus apply a force to the securing or laminating ring in the second direction.
  • This force can be achieved in particular by twisting the thread pairing, i. by rotating the thread of the means for axial fixation and / or tension of the planetary bolt relative to the internal thread and / or external thread of the planetary bolt produce.
  • On the thread pairing and thus on the internal thread and / or the external thread of the planetary bolt then acts accordingly a force in the first direction.
  • the described twist thus leads to a tension of the planetary pin.
  • An inventive planet carrier is provided with at least one through hole for insertion and fixation of a planetary bolt.
  • the planetary pin is inserted into the through hole.
  • the through hole fixes the planetary bolt at least in the radial direction.
  • This is preferably used in press fit, in which the planet carrier is shrunk onto the planet pins.
  • the planet carrier is heated. In the heated planet carrier, the planet pins are introduced. If the planet carrier then cools down, it shrinks on the planet pins, so that an interference fit is formed between the planet carrier and the planet pins.
  • the through-hole of the planet carrier according to the invention has an internal thread. This preferably runs coaxially to the axis of symmetry of the through hole or to the axis of symmetry of the planet pin inserted into the through hole or to the axis of rotation of a planet wheel rotatably mounted about the planet pin or to its planet bearings. Furthermore, the through hole preferably forms a cylindrical cavity.
  • the planetary pin inserted into the through-hole does not completely fill the through-hole. Instead, the internal thread is disposed in the region of the through hole, which is released from the planetary pin.
  • the second means for axial fixing and / or clamping of the planet pin at least one external thread, which is screwed to the internal thread of the planet carrier.
  • the external thread and the internal thread of the planet carrier can thus form a thread pairing.
  • the second means for axial fixation and / or clamping of the planetary pin further preferably has at least one contact surface with the planet pins. This contact surface causes an axial fixation and / or tension of the planetary pin, when the planet pin is inserted into the planet carrier and the second means for axial fixing and / or clamping of the planetary bolt screwed into the through hole of the planet carrier, that is, the external thread of the means was screwed to the internal thread of the planet carrier.
  • the contact surface is arranged so that the second means for axial fixation and / or clamping of the planetary bolt via the contact surface can exert a force acting in the first direction on the planet shaft.
  • a force acts on the contact surface in the first direction on the planet pins, when the second means for axial fixation and / or clamping of the planetary bolt is tightened by screwing into the through hole between the planet carrier and the planet pins.
  • a corresponding force in the second direction then acts on the thread pairing on the planet carrier.
  • a third means according to the invention for axially fixing and / or clamping a planetary bolt has at least one internal thread.
  • the internal thread is continuous, so that by screwing a screw into the internal thread, the screw can be clamped against the planet shaft.
  • the screw exerts a force on the planetary pin inserted into the planet carrier in the first direction.
  • a corresponding force in the second direction exerts the second means for axial fixation and / or clamping of the planetary bolt in this case on a safety o- the lamella ring, which is inserted into a groove in the planet carrier.
  • the means for axial fixation and / or clamping of the planetary bolt is thus clamped by screwing the screw into the internal thread against the safety or lamella ring inserted in the groove.
  • the groove extends within a through hole of the type described above.
  • the through hole and the groove are aligned coaxially with each other.
  • the groove thus extends in the circumferential direction about the axis of symmetry of the through-hole or of the planet pin or the axis of rotation of a planetary gear wheel introduced into the through-hole.
  • a rotation of the first or second means for axial fixation and / or clamping of the planetary pin relative to the planet pin and / or with respect to the planet carrier or the rotation of the screw for clamping against the planet pin relative to the third means for axial fixation and / or tension The consequence of the planetary bolt would be that the axial tension of the planetary pin would be lost and / or that the planetary pin would be displaced in the axial direction. This in turn would result in a loss of preload of the planetary bearings and / or an adjustment of the bearing clearance. The latter can lead to bearing damage.
  • the first, the second and the third means for axially fixing and / or clamping the planetary pin are provided in a preferred embodiment with a through thread.
  • a locking screw can be introduced.
  • the locking screw is provided to prevent a rotation of the means relative to the planetary pin and / or relative to the planet carrier or a rotation of the screw for clamping against the planet shaft relative to the means.
  • the through thread is arranged so that the locking screw acts on the planet shaft, on the planet carrier or on the screw for bracing against the planet shaft.
  • the locking screw preferably acts against the planetary pin.
  • the through-thread is preferably formed so that the locking screw acts against the planet carrier.
  • the second means may be configured as a groove nut to achieve an anti-rotation.
  • the through thread is formed in the case of the third means for axial fixation and / or clamping of the planetary bolt so that the locking screw acts on the screw for bracing the third means for axial fixation and / or tension of the planetary pin.
  • FIG. 1 shows a first planetary pin with external thread for screwing a Axial thesis.
  • FIG. 2 shows a second planetary pin with an external thread for screwing on an axial securing device
  • FIG. 3 shows a planet pin with an internal thread for screwing on an axial securing device
  • Fig. 5 is an axial lock for clamping by means of a screw.
  • a planetary pin 101 according to FIG. 1 has a first cylindrical region 103 and a second cylindrical region 105.
  • the diameter of the second region 105 exceeds the diameter of the first region 103, so that a step is formed with a shoulder 107, which serves for the axial fixation of the planetary bearings.
  • the second region 105 On the opposite side in the axial direction of this stage, the second region 105 has a further step, in which an external thread is incorporated.
  • An axial lock 109 has an internal thread that can be screwed to the external thread of the planetary bolt 105, so that the internal thread of the axial lock 109 and the external thread of the planetary bolt 105 form a thread pairing 11.
  • a configured as a through hole receptacle 1 13 in a planet carrier 1 15 serves to fix the planetary pin 101.
  • the planetary pin 101 extends only partially into the receptacle 1 13 and thereby leaves a portion of the receptacle 1 13 free.
  • In this area is located next to the axial lock 109, a retaining ring 1 17.
  • the locking ring 1 17 is inserted in a groove 1 19, which is coaxial with the planetary pin 101, the axial lock 109 and the retaining ring 1 17.
  • the axial lock 109 can be clamped against the retaining ring 1 17. This causes a corresponding tension of the planetary pin 101 against the axial securing 109 and consequently also a tension of the planetary pin 101 against the securing ring 1 17.
  • the planetary pin101 is braced against the planetary carrier 1 15.
  • FIG. 2 shows a variant of the exemplary embodiment illustrated in FIG. 1, to which the positions of the securing screws 121 in particular differ.
  • the locking screws 121 in the axial direction between the thread pairing 1 1 1 and the planet carrier 1 15 are arranged. However, runs between the thread pairing 1 1 1 and the retaining ring 1 17 a load path. In this load path are the locking screws 121.
  • the locking screws 121 are arranged in the embodiment of Figure 1 outside the load path, so that the axial securing 1 19 can be made more stable.
  • Figure 3 illustrates an embodiment in which the planetary pin 101 has an internal thread that forms the thread pairing 1 1 1 with an external thread of the axial lock 109.
  • the locking screws 121 in the load path between the thread pairing 1 1 1 and the locking ring 1 17. Accordingly, an embodiment of the invention according to Figure 1, the design of a resilient axial lock 109th
  • the axial securing device 109 shown in FIG. 4 is not screwed to the planet pin 101 but to the planet carrier 105. Pairing 1 1 1 formed by an external thread of the axial lock 109 and an internal thread of the planet carrier 105. Such an embodiment of the axial lock 109 allows a comparatively straight-line load path between the planet pins 101 and the thread pairing 11 1. Accordingly, there are advantages in terms of the load capacity of the axial lock 109th
  • the locking screws 121 shown in FIG. 4 act on the planet pins 101.
  • the axial lock 109 is only given a rotation relative to the planet carrier 105 secured when the planetary pin 101 can be rotatably mounted in the planet carrier 1 15.
  • the locking screws 121 may alternatively be arranged so that they act against the planet carrier 1 15. Despite a rotation of the planetary pin 101 relative to the planet carrier 105 so a rotation of the axial lock 109 relative to the planet carrier 1 15 and thus a loss of bias or the desired axial play of the planet bearings can be prevented.
  • the axial lock 109 is configured as a slot nut with a corresponding, attached to the planet carrier 1 15 fuse.
  • FIG. 5 shows an axial lock 109 with an internal thread. This is not bolted to the planet pins 101, but forms with the external thread of a screw 501 the thread pairing 1 1 1.
  • the screw 501 is arranged so that it can exert a force on the planetary pin 101, which leads to a strain of the planetary bearings or axially fixed the planetary pin 101 so that a desired bearing clearance is established.
  • a locking screw 121 may be provided, which is arranged to act on the screw 501.
  • the locking screw 121 could be Dialer direction are screwed from the inside out into the axial lock 109.
  • the screw 501 in contrast to a head which can be clamped against the axial lock 109. This causes a fuse of the screw 501 against rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Retarders (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

L'invention concerne le serrage et/ou la fixation axiale d'un axe de satellite, en particulier d'un axe de satellite d'un étage de satellite de la boîte de vitesses d'une éolienne. L'invention repose sur l'idée selon laquelle concerne également une fixation par vissage permettant de serrer et/ou de fixer axialement un axe de satellite est prévue à proximité immédiate d'une zone de l'axe de satellite, l'axe de satellite comprenant un épaulement permettant le serrage et/ou la fixation axiale de paliers de satellite. L'invention permet ainsi d'obtenir des chemins de charge courts entre les paliers de satellite et la fixation par vissage, et par conséquent une rigidité élevée.
EP14801996.1A 2013-12-18 2014-11-18 Fixation et/ou serrage d'un axe de satellite Withdrawn EP3084269A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013226522.0A DE102013226522A1 (de) 2013-12-18 2013-12-18 Fixierung und/oder Verspannung eines Planetenbolzens
PCT/EP2014/074830 WO2015090789A1 (fr) 2013-12-18 2014-11-18 Fixation et/ou serrage d'un axe de satellite

Publications (1)

Publication Number Publication Date
EP3084269A1 true EP3084269A1 (fr) 2016-10-26

Family

ID=51945862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14801996.1A Withdrawn EP3084269A1 (fr) 2013-12-18 2014-11-18 Fixation et/ou serrage d'un axe de satellite

Country Status (6)

Country Link
US (1) US20170023125A1 (fr)
EP (1) EP3084269A1 (fr)
JP (1) JP2017500502A (fr)
CN (1) CN105849441A (fr)
DE (1) DE102013226522A1 (fr)
WO (1) WO2015090789A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216849A1 (de) * 2015-09-03 2017-03-09 Zf Friedrichshafen Ag Einstellbare Fixierung von Planetenlagern
DE102017223092A1 (de) 2017-12-18 2019-06-19 Zf Friedrichshafen Ag Sonnenrad-Planetenträger-Anordnung für ein Planetengetriebe
CN112166249B (zh) * 2018-06-14 2023-09-05 维斯塔斯风力系统有限公司 风轮机动力系统连接
CN111188893A (zh) * 2018-11-14 2020-05-22 舍弗勒技术股份两合公司 行星架齿轮组
DE102020206443A1 (de) 2020-05-25 2021-11-25 Zf Friedrichshafen Ag Planetenbolzen mit Lagesicherung
US11947672B2 (en) * 2021-03-02 2024-04-02 Nxp B.V. Voltage glitch detection circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6491600B1 (en) 2001-09-11 2002-12-10 Deere & Company Two stage planetary final device
US20030236148A1 (en) * 2002-06-21 2003-12-25 The Timken Company Epicyclic drive with unified planet assemblies
JP2006349046A (ja) * 2005-06-15 2006-12-28 Nissan Motor Co Ltd 遊星歯車のピニオン支持構造
US20060293142A1 (en) 2005-06-24 2006-12-28 Torres Mariano G Compact planetary gear assembly
DE102010040748A1 (de) * 2010-09-14 2012-03-15 Zf Friedrichshafen Ag Planetengetriebe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015090789A1 *

Also Published As

Publication number Publication date
CN105849441A (zh) 2016-08-10
US20170023125A1 (en) 2017-01-26
DE102013226522A1 (de) 2015-06-18
WO2015090789A1 (fr) 2015-06-25
JP2017500502A (ja) 2017-01-05

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