Device for distributing oil from rolling bearings of aircraft turbine engines

Abstract

Device for distributing oil from a rolling bearing (8) of an aircraft turbine engine, comprising: a rolling bearing (8), a body (5) for distributing oil, the body being configured to be mounted on a turbine engine shaft (4), the body comprising: i) a first outer cylindrical surface (5a) for mounting an inner ring (12) of the bearing, ii) an annular spoon (11) for recovering oil, iii) an annular track (26) for a dynamic seal (22), iv) a circuit (7) for lubricating the bearing and cooling the track, the circuit being formed in the body, characterised in that the annular spoon is a first spoon (11a) which supplies oil to a first part (7x) of the circuit for cooling the track, and the body comprises a second annular spoon (11b) for recovering oil which supplies oil to a second part (7y) of the circuit for lubricating the bearing.

Description

Technical Field

[0001] The invention relates to an oil distribution device for a rolling bearing of an aircraft turbine engine. Background Art

[0002] Prior art includes, but is not limited to, FR-A1-3 035 154, FR-A1-3 066 549, WO-A1-2015 / 075355, US-B2-10 082 037 and EP-A1-3 112 636.

[0003] In a known manner, a turbine engine comprises a number of rolling bearings intended to support the rotor of the turbine engine in rotation, in particular relative to a fixed support such as a turbine engine casing.

[0004] During operation, oil is usually sprayed onto the rollers of these bearings to lubricate and cool them.To prevent the oil from spreading throughout the engine, the rolling bearings must be confined inside oil enclosures and these oil enclosures must be sealed relative to an air enclosure adjacent to the engine, which must be free of oil.

[0005] More specifically, some oil seals are defined between a shaft, rotationally supported by rolling bearings, and an annular cover integral with a stationary support member, which is connected to the turbine engine casing and arranged around the shaft. A dynamic annular seal is typically positioned between the shaft and the cover to ensure a seal between the oil seal and an adjacent air seal. Typically, the dynamic seal is mounted inside an end plate attached to the cover.

[0006] A common dynamic seal used in rolling element bearing oil containment housings in turbine engines is the segmented radial seal (JRS). This seal consists of multiple annular sectors circumferentially distributed around a seal track that rotates with the rotor shaft. These sectors are in sliding contact with the seal track. Friction between the seal sectors and the seal track generates heat that must be removed to maintain the mechanical integrity of these components. One technique is to circulate cooling oil along the inner wall of the seal track.

[0007] Dynamic seals can be positioned in close proximity to rolling bearings that are lubricated with oil during operation. It is known to lubricate rolling bearings via oil distribution rings. The rolling bearings are mounted on oil distribution rings that include scoops for recovering oil sprayed from nozzles, collecting the oil, and supplying it to the lubrication circuit of the bearings.

[0008] The present invention provides an improvement to this technology which makes it possible in particular to optimize the cooling of the tracks of dynamic seals, for example of the JRS type, which are arranged in the vicinity of lubricated rolling bearings. Summary of the Invention

[0009] The present invention relates to an oil distribution device for a rolling bearing of an aircraft turbine engine, the oil distribution device comprising:

[0010] - a rolling bearing comprising two rings, an inner ring and an outer ring,

[0011] - an oil distribution body configured to be mounted on a turbine engine shaft, said body comprising:

[0012] i) a first outer cylindrical surface for mounting an inner ring of a bearing,

[0013] ii) annular oil recovery scoop,

[0014] iii) annular track of dynamic seals,

[0015] iv) a circuit for lubricating the bearings and cooling the rails, the circuit being formed in the body,

[0016] characterised in that the annular scoop constitutes a first scoop which supplies oil to a first part of the circuit for cooling the rails, and wherein the body comprises a second annular oil recovery scoop which supplies oil to a second part of the circuit for lubricating the bearings.

[0017] On the one hand, the present invention makes it possible to reduce the number of components and thus simplify the design of the device, since the main body of the device integrates several functions, namely that of the distribution ring, which supports and lubricates the bearings, and that of the track of the dynamic seal. Consequently, the device can have smaller overall dimensions, in particular smaller radial and axial dimensions, than in the prior art. The present invention also makes it possible to simplify the oil circuit used to lubricate the bearings and cool the seal track. The fact that the oil circulates in the vicinity of the track makes it possible to cool the track by heat conduction, which is particularly advantageous. Passing the oil through the circuit does not necessarily require special sealing systems, which also limits the risk of uncontrolled oil leakage during operation. Furthermore, the reduction in the track diameter leads to a reduction in the leakage cross-section to be sealed by the dynamic seal, which further improves the efficiency of the sealing device.

[0018] A disadvantage of using a single scoop to supply oil to the circuit and lubricate the bearing and cool the seal track is the risk of insufficient oil supply to the seal track, resulting in poor cooling of the seal track.

[0019] The two spoons are able to supply oil to the two parts of the circuit respectively, thereby generating a first oil flow for cooling the seal track and a second oil flow for lubricating the bearings.

[0020] The two scoops therefore function to adequately supply oil to all parts of the circuit while increasing the size of the components as little as possible. This cooling is ensured by a dedicated oil flow cooling the seal track.

[0021] The device according to the invention may include one or more of the following features, taken independently of each other or in combination with each other:

[0022] - the diameter of the first spoon-shaped member is smaller than the diameter of the second spoon-shaped member;

[0023] - the scoops are generally L-shaped in axial section and each comprise a cylindrical portion connected at one end to an annular flange, the cylindrical portions extending around each other, and the annular flanges being axially offset from each other;

[0024] - a first portion of the circuit comprises at least a first channel extending in the body between a first spoon and the track;

[0025] - the second part of the circuit comprises at least one second channel extending in the body between the second spoon and the duct for supplying oil to the bearing;

[0026] - the first portion comprises an annular second channel in which the longitudinal rib is located, and the second portion comprises separate first longitudinal channels spaced apart around the longitudinal axis of the body;

[0027] - the spoon is formed in one piece with the body and the rails of said body;

[0028] a first spoon formed in one piece with the rail, a second spoon carried by a nut screwed onto the first spoon, said nut preferably bearing on the inner ring of the bearing;

[0029] - The subject comprises:

[0030] - claws configured to cooperatively engage with complementary claws of the shaft, and / or

[0031] - an annular abutment configured to cooperate by axial abutment with a corresponding cylindrical shoulder of the shaft.

[0032] - the body comprises a second outer cylindrical surface for supporting the seal,

[0033] - the body comprises an annular shoulder for abutting a first axial end of the inner ring, the body further comprising threads for a nut configured to abut a second, opposite axial end of the inner ring,

[0034] - the thread is located between the first surface and the second surface,

[0035] - the spoon is located at a first axial end of the body and the track (or the second surface) is located at a second, opposite axial end of the body.

[0036] The invention further relates to a turbine engine, in particular an aircraft turbine engine, comprising at least one device as described above.

[0037] The turbine engine according to the invention may include one or more of the following features, taken independently of one another or in combination with one another:

[0038] the turbine engine comprises a shaft and a journal around which the device is mounted, the body of the device being axially clamped between an annular shoulder of the shaft and the journal, the journal being axially pushed into abutment against the body by screwing a nut onto the shaft,

[0039] - the turbine engine comprises an oil nozzle in an annular space delimited by the spoon, in particular between the spoon and the shaft,

[0040] The nozzle comprises two oil injection outlets, a first of which is configured to supply oil to the first scoop, and a second of which is configured to supply oil to the second scoop. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Other features and advantages will be apparent from the following description of non-limiting embodiments of the invention with reference to the accompanying drawings, in which:

[0042] [ Figure 1 ] Figure 1 is a partial schematic half view of an axial section of a turbine engine including an oil distribution device,

[0043] [ Figure 2 ] Figure 2 yes Figure 1 A partial schematic perspective view of an axial section of the device shown in,

[0044] [ Figure 3 ] Figure 3 is a partial schematic half view of an axial section of a turbine engine including an oil distribution device according to an embodiment of the present invention,

[0045] [ Figure 4] Figure 4 is with Figure 3 Similar diagrams showing the flow of lubricating and cooling oils,

[0046] [ Figures 5A-5B ] Figure 5A and Figure 5B They are Figure 3 Schematic diagram of an axial section and a cross section (taken along line VV) of the body of the device, and

[0047] [ Figure 6 ] Figure 6 is a partial schematic half view of an axial section of a turbine engine comprising an oil distribution device according to a variant of the invention. DETAILED DESCRIPTION

[0048] Figure 1 A partial schematic diagram of an oil seal housing 2 of an aircraft turbine engine bearing is shown.

[0049] This oil enclosure 2 is defined internally by a shaft 4 rotating about an axis X and externally by an annular cover 6 and a bearing support 3 integral with the casing 1 of the turbine engine and arranged around the shaft 4 .

[0050] An oil distribution ring 5 is arranged around the shaft 4 in a coaxial manner with respect to the shaft and is rotationally fixed to the shaft.

[0051] The oil seal housing 2 contains a bearing 8 comprising a plurality of rolling elements 10 engaged between an inner ring 12 mounted (preferably by means of a shrink fit) on the distribution ring 5 and an outer ring 14 integral with a bearing support 3 fixed to the casing 1 of the turbine engine. The bearing support 3 may have a certain flexibility.

[0052] In the example shown in the drawings, the rolling elements 10 are balls. However, in the context of the present invention, the type of roller or rolling element is not limited.

[0053] Oil is injected into the oil housing 2 to lubricate and cool the rolling elements 10 of the bearing. To this end, the oil circulates through the lubrication circuit 7 integrated in the distribution ring 5 to the outer cylindrical surface 5a of the distribution ring 5 where the inner ring 12 is mounted.

[0054] Oil is introduced by oil nozzles 9 located upstream of the distribution ring 5 (the expressions "upstream" and "downstream" refer here to the general gas flow in a turbine engine). The ring 5 has a generally annular shape around the axis X and comprises, at its upstream end, a scoop 11 for recovering the oil ejected by the nozzles 9. In the example shown, this scoop is in the form of a cylindrical flange oriented upstream. The scoop 11 extends around the shaft 4 at a distance therefrom and delimits an annular space with the shaft for receiving the oil from the nozzles 9.

[0055] The oil circuit 7 comprises at least one inlet opening at the upstream end of the distribution ring 5 , in the above-mentioned oil receiving space.

[0056] In the example shown, this inlet is formed by the upstream end 7aa of at least one channel 7a having an elongated shape along the axis X and comprising a downstream end 7ab situated at the downstream end of the distribution ring 5 .

[0057] Also at its upstream end, the ring 5 comprises an annular row of claws 13 oriented axially upstream and engaging between complementary claws on the shaft 4. This cooperation serves to rotationally secure the ring 5 to the shaft 4. As shown, the end 7aa is positioned radially between the claws 13 and the spoon 11.

[0058] An oil duct 15 oriented substantially radially with respect to the axis X extends from the channel 7 a to the surface 5 a of the ring 5 for lubricating the bearing 8 .

[0059] Inner ring 12 of bearing 8 also includes an integrated oil circuit 12a for circulating the oil supplied by circuit 7 of ring 5 to lubricate the rolling elements and their cages. Inner ring 12 bears axially upstream on annular shoulder 5b of ring 5. Downstream of mounting surface 5a of inner ring 12, distribution ring 5 includes an external thread 5c for screwing onto a nut 16 axially supported on the downstream end of ring 12 to axially clamp the inner ring against shoulder 5b.

[0060] The oil enclosure 2 also comprises a sealing system for sealing it relative to an adjacent air enclosure 20 which must be free of oil.

[0061] To this end, the sealing system comprises in particular a dynamic annular seal 22. Typically, this dynamic seal 22 is constituted by a carbon annular sector. The dynamic seal 22 is retained in an annular end plate 28, which is itself mounted inside the cover 6.

[0062] The end plate 28 has a portion 28 a having an L-shaped cross section for receiving the dynamic seal 22 .

[0063] The dynamic annular seal 22 is associated with a seal track 26 that is rotatable and carried by the shaft 4. The track 26 has a contact surface 26a that slides in contact with the dynamic annular seal 22. The contact surface 26a and the track 26 are treated to improve seal / track sliding and minimize wear of the dynamic annular seal 22.

[0064] The sealing system further comprises a labyrinth seal 23 arranged downstream of the dynamic seal 22 , between the journal 21 mounted on the shaft 4 and the cover 6 .

[0065] A journal 21 is rotationally fixed to the shaft 4 by means of splines 21a. It is located downstream of the distribution ring 5 and comprises an upstream end that rests axially on the downstream end of the ring 5, forming an axial abutment. A nut 24 is screwed onto the shaft 4, downstream of the journal 21, to press the journal axially against the ring 5, which itself is held axially against the teeth of the shaft 4. Furthermore, the ring 5 is preferably shrunk onto the shaft 4 to ensure its centering.

[0066] The distribution ring 5 is formed in one piece with the track 26 of the dynamic seal 22 , for example by additive manufacturing. The ring 5 and the track 26 are thus formed by a one-piece body of the integrated circuit 7 .

[0067] As shown, the circuit 7 extends axially downstream to the track 26 for conductive cooling of the surface 26a.

[0068] Thus, the downstream end 7ab of the channel 7a is closest to the rail 26 and the downstream end of the body, and the channel 7a is surrounded by the surface 26a. In the example shown, the channel 7a is straight and lies on a circle with a diameter D1 centered on the axis X. The surface 26a lies on a circle with a diameter D3 centered on the axis X.

[0069] The circuit 7 comprises at least one further channel 7 b having a generally elongated and preferably rectilinear shape and situated on a circle having a diameter D2 centered on the axis X. D1 is smaller than D2 , which is smaller than D3 , which means that the channel 7 b extends between the channel 7 a and the surface 26 a .

[0070] The channel 7b has a downstream end 7ba connected to the downstream end 7ab of the channel 7a and an upstream end 7bb opening onto the surface 5a or into the thread 5c or, as in the example shown, between the surface 5a and the thread 5c. This end 7bb can be bent into an L-shape and include a portion directed radially outwards and opening into an annular groove 7c provided, for example, on the ring 5 and opening radially outwards.

[0071] The connection between the end portion 7ab and the end portion 7ba can be achieved, for example, by at least one C-shaped bend 7d.

[0072] Nut 16 may include at least one integrated oil flow channel 29 designed to receive oil from groove 7c. This channel 29, for example, slopes radially outward from upstream to downstream and includes a radially inner end that opens toward groove 7c and a radially outer end that opens outward to eject oil. This enables nut 16 to act as a centrifugal droplet ejector, ejecting oil from the seal for lubricating bearing 8 and / or cooling seal 22. The presence of oil on seal 22 reduces its effectiveness.

[0073] By integrating the cooling circuit with the seal track 26, the diameter of the seal track 26 can be reduced, which has a twofold benefit. First, it reduces the radial space requirement in this area. Furthermore, due to the lower circumferential speed, the friction of the seal 22 on the track 26 becomes less significant. Finally, the passage cross-section between the seal 22 and the track 26 is smaller, resulting in less leakage.

[0074] Figure 1 The oil flow path during operation is schematically illustrated by arrows. Oil is injected through nozzle 9 into the space defined by scoop 11 and enters circuit 7. The oil is delivered to bearing 8 for lubrication and to the vicinity of surface 26a for cooling by conduction. The lubricating oil is naturally centrifuged by bearing 8, and cooling oil from track 26 is delivered to groove 7c, where it is then discharged through channel 29 of nut 16.

[0075] from Figure 2 As can be seen, the circuit 7 can include a plurality of channels 7a, 7b evenly spaced about the axis X. The body can include up to ten or more channels 7a. These channels 7a can have a circular cross-section. The cross-section of these channels can also vary along the axis X. Each of these channels can have a circular cross-section in the upstream section and a rectangular cross-section in the downstream section.

[0076] The body may also include up to ten or more channels 7b. The cross-section of these channels 7b may be circular. The cross-section of these channels may also vary along the axis X. Each of these channels may have a circular cross-section in the upstream section and a rectangular cross-section in the downstream section.

[0077] The channels 7 a , 7 b extend here parallel to the axis X, but this is not restrictive.

[0078] The applicant has noted that supplying oil to the circuit via a single scoop can lead to insufficient cooling of the rail 26. In practice, the rolling elements 10 of the bearing 8 experience a pumping phenomenon as they pass through the outlet of the oil-carrying duct 15. Bearing 8 consumes 80% to 90% of the oil flow supplied by the circuit 7, while the rail 26 consumes only 20% to 10%. Precisely controlling these ratios is difficult, leading to the risk of insufficient oil supply to the rail 26.

[0079] In order to ensure the correct oil flow for cooling the rails 26 and lubricating the bearings 8 , in each circuit, while keeping it as compact as possible, the proposed solution consists in using two separate spoons, each dedicated to supplying oil to a portion of the circuit.

[0080] Figures 3 to 5B A first embodiment of a device according to the present invention is shown. The device comprises all features of the devices described herein, unless these features conflict with the following text and the accompanying drawings.

[0081] The device comprises a first annular spoon 11a, similar to Figure 1 and Figure 2 The spoon 11 of the device supplies oil to the first part of the circuit 7 to cool the rail 26.

[0082] The body 5 of the device also comprises a second annular oil recovery spoon 11 b which supplies oil to the second part of the circuit for lubricating the bearings.

[0083] In the example shown, the diameter of the first spoon 11 a is smaller than the diameter of the second spoon 11 b .

[0084] The scoops 11a, 11b are generally L-shaped in axial cross-section, and each includes a cylindrical portion 11a1, 11b1, one axial end of which is connected to an annular flange 11a2, 11b2. The cylindrical portions 11a1, 11b1 extend around each other, and the annular flanges 11a2, 11b2 are axially offset from each other. Here, flange 11b2 is located upstream of flange 11a2.

[0085] The flanges 11a2, 11b2 have predetermined radial dimensions to ensure that the oil sprayed by the nozzle 9 is retained during operation, thereby avoiding any overflow of the oil (see Figure 4 ).

[0086] The first portion 7x of the circuit 7 comprises at least one first channel 7a extending in the body 5 between the first spoon 11a and the track 26. Figure 5A and Figure 5BAs can be seen, the channel has an annular shape. The longitudinal rib 7x1 is located in the channel 7a and extends along all or part of its length, so as to facilitate the oil conveyance while limiting pressure losses. Moreover, since the channel 7a is relatively long, the rib 7x1 ensures the connection between the radially inner and radially outer annular sections of the body 5 separated by the channel 7a. The downstream end of the channel 7a can be connected to a similar Figure 1 and Figure 2 other elements (7b, 7c, 7d) of the element.

[0087] The second portion 7y of the circuit 7 comprises at least one second channel 7y1 extending into the body 5 between the second spoon 11b and the duct 15 for supplying oil to the bearing. Figure 5A and Figure 5B A preferred embodiment is shown in which the second portion 7y comprises a plurality of independent longitudinal channels 7y1 spaced apart around the longitudinal axis X of the body 5. In the example shown, there are three series of three channels 7y1. In each of these series, a first channel 7y11 is connected to a conduit 15 supplying oil to the upstream section of the ring, a second channel 7y12 is connected to another conduit 15 supplying oil to the middle section of the ring 12, and a third channel 7y13 is connected to yet another conduit 15 supplying oil to the downstream section of the ring.

[0088] Figure 4 The path of the oil from the nozzle 9 is shown. Advantageously, the nozzle 9 comprises a first oil injection outlet 9a, for example directed radially inwards, and configured to supply oil to the first spoon 11a. The oil then travels in the first channel 7a to cool the rail 26 until it cools down in contact with the rail 26. Figure 1 and Figure 2 A similar situation occurs at the level of the nut 16 .

[0089] The nozzle 9 comprises a second oil injection outlet 9b oriented, for example, radially outwards and configured to supply oil to the second spoon 11b . The oil then travels through the channel 7y1 to lubricate the bearing 8 .

[0090] exist Figures 3 to 5B In the embodiment shown, the spoons 11 a , 11 b are formed in one piece with the body 5 and its rail 26 .

[0091] exist Figure 6 In the variant shown, the first spoon 11 a is formed in one piece with the rail 26 , while the second spoon 11 b is carried by a nut 16 ′ screwed onto the first spoon 11 a .

[0092] Compared with the previous design and Figure 1 and Figure 2The arrangement shown differs in that the inner ring 12 of the bearing 8 does not bear on the upstream shoulder 5 b of the body, but on the downstream shoulder 5 c of this body.

[0093] Thus, the nut 16' used to secure the inner ring 12 is not screwed onto the downstream thread of the body 5, but onto the upstream thread of this body. This nut 16' is screwed onto this thread from upstream, which is arranged upstream of the surface 5a, and it bears axially on the upstream end of the ring 12, which is thus clamped axially between this nut 16' and the shoulder 5c.

[0094] A second spoon 11 b is integrated into the nut 16 ′ and projects from the upstream end of the nut.

[0095] The first portion 7x of the circuit 7 dedicated to cooling the rail 26 opens into an annular groove 7x2 formed in the shoulder 5b, just upstream of an annular web 7x3 for the oil to flow by centrifugal effect. This web 7x3 is also integrated into the body 5.

[0096] Furthermore, in this variant, the body 5 is shrunk by its inner cylindrical surface 5x onto the outer cylindrical surface 4x of the shaft so as to fix the body 5 in rotation relative to the shaft 4. The axial abutment of the body 5 on the shaft 4 is achieved by an annular abutment 5y carried by the body 5, here at its downstream end, and which is axially clamped between a cylindrical shoulder 4y of the shaft 4 and a similar annular abutment 5y. Figure 1 between the upstream ends of the journal 21.

[0097] exist Figures 3 to 5B In the embodiment shown, the shrink fit between body 5 and shaft 4 is located just inside bearing 8. The length of this shrink fit is reduced to just what is necessary to reduce weight and avoid installation problems. Shaft 4 provides axial abutment, and the claws prevent rotation. This axial abutment is located at the front of the ring to prevent installation problems.

[0098] The oil distribution device according to the present invention comprises a body that integrates the functions of the prior art distribution ring and seal track. The ring itself can be considered to have the multiple functions of collecting oil from the nozzles and supporting and positioning the bearing. The oil circuit integrated into the body also performs two functions: lubricating the bearing and cooling the seal track.

[0099] Additive manufacturing is a particularly suitable method for realizing this body.

[0100] The main advantages of the present invention include making the device compact, eliminating components, improving the efficiency of the dynamic seal, and reducing onboard mass.

Claims

1. An oil distribution device for a rolling bearing (8) of an aircraft turbine engine, the oil distribution device comprising: - a rolling bearing (8) comprising two rings, an inner ring (12) and an outer ring (14), - an oil distribution body (5) configured to be mounted on a turbine engine shaft (4), comprising: i) a first outer cylindrical surface (5a) for mounting an inner ring (12) of the rolling bearing, ii) an annular oil recovery spoon (11), iii) an annular track (26) of a dynamic seal (22), iv) a circuit (7) for lubricating the rolling bearing and cooling the annular track, the circuit being formed in the oil distribution body, Characterized in that the annular oil recovery spoon constitutes a first spoon (11a), which supplies oil to the first part (7x) of the circuit to cool the annular track, and the oil distribution body includes a second annular oil recovery spoon (11b), which supplies oil to the second part (7y) of the circuit to lubricate the rolling bearing.

2. The oil distribution device according to claim 1, wherein The diameter of the first scoop (11a) is smaller than the diameter of the second annular oil recovery scoop (11b).

3. The oil distribution device according to claim 1 or 2, wherein: The first scoop (11a) and the second annular oil recovery scoop (11b) are generally L-shaped in axial cross-section, and each of the first scoop and the second annular oil recovery scoop includes a cylindrical portion (11a1, 11b1) having one end connected to an annular flange (11a2, 11b2), the cylindrical portions extending around each other, and the annular flanges being axially offset from each other.

4. The oil distribution device according to claim 1 or 2, wherein: The first portion (7x) of the circuit (7) comprises at least a first channel (7a) extending in the oil distribution body (5) between the first spoon (11a) and the annular track (26).

5. The oil distributing device according to claim 1 or 2, wherein: The second portion (7y) of the circuit (7) comprises at least one second channel (7y1) extending in the oil distribution body (5) between the second annular oil recovery spoon (11b) and the duct (15) for supplying oil to the rolling bearing (8).

6. The oil distribution device according to claim 4, wherein The first portion (7x) comprises an annular first channel (7a) in which the longitudinal rib (7x1) is located, and the second portion (7y) comprises independent second channels (7y1) spaced around the longitudinal axis (X) of the oil distribution body (5).

7. The oil distribution device according to claim 1 or 2, wherein: The first scoop (11a) and the second annular oil recovery scoop (11b) are formed as a single piece with the oil distribution body (5) and the annular track (26) of the oil distribution body.

8. The oil distributing device according to claim 1 or 2, wherein: The first scoop (11a) is formed in one piece with the annular track (26), and the second annular oil recovery scoop (11b) is carried by a nut (16') screwed onto the first scoop (11a).

9. The oil distributing device according to claim 1 or 2, wherein: The oil distribution body (5) comprises: - claws (13) configured to cooperatively engage with complementary claws of the turbine engine shaft (4), and / or - an annular abutment portion (5y) configured to cooperate by axial abutment with a corresponding cylindrical shoulder (4y) of the turbine engine shaft (4).

10. The oil distribution device according to claim 8, wherein The nut is supported on an inner ring (12) of the rolling bearing (8).

11. A turbine engine comprising at least one oil distribution device according to any one of claims 1 to 10.

12. The turbine engine according to claim 11, wherein: The turbine engine is an aircraft turbine engine.

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