Rotary support device for aircraft and rotary drive device for aircraft

Abstract

To provide a rotating support device for aircraft that can increase the axial load bearing capacity. [Solution] The rotating support device 1 for an aircraft comprises a first member 33, a second member 34, a plurality of first rolling elements 9, and a plurality of second rolling elements 10. The first member 33 has a first inner ring raceway 11 on its outer circumferential surface and a second outer ring raceway 12 on its inner circumferential surface. The second member 34 has a first outer ring raceway 13 on its inner circumferential surface and a second inner ring raceway 14 on its radially outward-facing circumferential surface. The first rolling elements 9 are positioned between the first inner ring raceway 11 and the first outer ring raceway 13, and the second rolling elements 10 are positioned between the second outer ring raceway 12 and the second inner ring raceway 14. Of the first member 33 and the second member 34, one is a stationary body 7 fixed to the aircraft frame, and the other is a rotating body 8 that rotates together with the propeller 2. The first rolling elements 9 and the second rolling elements 10 are provided with a back-to-back combination type contact angle and preload.

Claims

1. A first member having a first inner ring raceway on its outer circumferential surface, and a second outer ring raceway on the inner circumferential surface of a portion axially separated from the first inner ring raceway, A second member having a first outer ring raceway on the inner circumferential surface facing the first inner ring raceway, and a second inner ring raceway on the radially outward-facing circumferential surface facing the second outer ring raceway, A plurality of first rolling elements are arranged between the first inner ring raceway and the first outer ring raceway, A plurality of second rolling elements are arranged between the second outer ring raceway and the second inner ring raceway, Equipped with, One of the first member and the second member is a stationary body fixed to the aircraft frame of the aircraft, The other of the first member and the second member rotates together with a propeller arranged coaxially with the stationary body and is a rotating body that includes a motor rotor or to which the motor rotor is fixed. The first rolling element and the second rolling element are provided with a back-to-back contact angle and preload. Rotation support device for aircraft.

2. The rotating support device for an aircraft according to claim 1, wherein the first member is the stationary body and the second member is the rotating body.

3. The rotating support device for an aircraft according to claim 1, wherein the first member is the rotating body and the second member is the stationary body.

4. The first member has a hollow shape, as described in claim 1, for the rotating support device for an aircraft.

5. The first member has a first member body having an outer ring portion on which the second outer ring raceway is directly formed on its inner circumferential surface, the rotational support device for an aircraft according to claim 1.

6. The rotating support device for an aircraft according to claim 5, wherein the first member has a first inner ring raceway on its outer circumferential surface and a first inner ring fitted onto the main body of the first member.

7. The first member body has a fitting portion into which the first inner ring is fitted, The outer diameter of the fitting portion is smaller than the outer diameter of the outer ring portion. Rotating support device for an aircraft according to claim 6.

8. The rotating support device for an aircraft according to claim 1, wherein the second member comprises a second member body and a first outer ring having the first outer ring raceway on its inner circumferential surface and fitted inside the second member body.

9. The rotating support device for an aircraft according to claim 1, wherein the second member comprises a second member body and a second inner ring having a second inner ring raceway on its outer circumferential surface and fitted onto the second member body.

10. The rotating support device for an aircraft according to claim 1, wherein the pitch circle diameter of the first rolling element and the pitch circle diameter of the second rolling element are equal to each other.

11. The stationary body has a fixing part that is fixed to the aircraft frame, The rotating body has a propeller mounting portion for attaching the propeller. Rotating support device for an aircraft according to claim 1.

12. Rotating support device for an aircraft according to claim 1, wherein sealing members are provided on both sides of the first rolling element and the second rolling element in the axial direction.

13. The rotating support device for an aircraft according to claim 12, wherein the sealing member is a non-contact type sealing member.

14. A rotating support device for an aircraft according to any one of claims 1 to 13, A drive motor having a motor stator and the motor rotor, Equipped with, The motor stator constitutes a part of the stationary body or is fixed to the stationary body. The motor rotor constitutes a part of the rotating body or is fixed to the rotating body. Rotary drive device for aircraft.

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